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WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAI, INVESTIGATION AND PROJECT STATUS DAVIES OIL COMPANY 3305-1/2 GULF STREET BAKERSFIELD, CALIFORNIA DELTA PROJECT NO. 40-87-326 -; Delta Environmental Consultants, Inc. Delta Environmental Consultants, Inc. 3330 Data Drive, Suite 100 Rancho Cordova, CA 95670 916/638.2085 FAX: 916/638-8385 August 24, 1990 Mr. Bill Davies Davies Oil Company Post Office Box 80067 Bakersfield, California 93380 Subject: Work Plan for Additional Off-Site Hydrogeologic Investigation and Project Status Davies Off Company, 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Dear Mr. Davies: Enclosed is a copy of the referenced report for the subject site.' Additional copies of th~ report are being forwarded to the identified regulatory agencies and Messrs. Cyril Andre and Jim Boylan (adjacent property owners). Th/a report includes a work plan for off-site hydrogeological investigation which is proposed to be completed before proceeding with any remediation work. Figure 5 of the report shows the planned project schedule to complete this work. The project status is briefly described. It has been a pleasure serving you on th~ project. If you have any questions regarding this report or need additional information, please call me at (916) 638-2085. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Sudhakar Talanki Project Engineer/Project Manager ST:law Enclosure cc/enc: Mr. Jong Han, California Regional Water Quality Control Board, Central Valley Region, Fresno Ms. Dolores Gough, Kern County Health Department Mr. Cliff Calderwood, Kern County Air'Pollution Control District Mr. Cyril Andre, Alice Andre Testamentary Trust, Bakersfield Mr. Jim Boylan, Jim's Steel and Supply, Bakersfield Practical Solutions to Environmental Concerns Delta Environmental Consultants~ Inc. 3300 Data Drive, Suite 100 Rancho Cordova, CA 95670 916/638-2085 FAX:916/638-8385 February 13, 1991 Mr. Bill Davies Davies Oil Company Post Office Box 80067 Bakersfield, California 93380 Subject: Soil and Ground Water Ana(ytical Results Davies Oil Company 3305-112 Gulf Street, BakersfieM, California Delta Project No. 40-87-326 Dear Mr. Davies: Enclosed is a copy of the referenced report for the subject site. Copies of this report are being forwarded to the identified regulatory agencies and Messrs. Cyril Andre and Jim Boylan (adjacent property owners). This report includes analytical results of soft and ground water samples from ground water monitoring wells MW-13, MW-14, MW-15, and MW-16 installed in January 1991. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Sudhakar Talanki Project Engineer/Manager ST:ecd Enclosure cc/enc: Mr. Jong Han, California Regional Water Quality Control Board, Central Valley Region, Fresno Ms. Dolores Gough, Kern County Health Department Mr. Cyril Andre, Alice Andre Testamentary Trust, Bakersfield Mr. Jim Boylan, Jim's Steel and Supply, Bakersfield TABLE OF CONTENTS 1.0 INTRODUCTION 1.1 Scope of Work 2.0 BACKGROUND INFORMATION 2.1 Site Location and Description 2.2 Previous Work Conducted at the Site 3.0 PROJECT RESULTS 3.1 Ground Water Remediation Status 3.2 Ground Water Elevations and Physical Observations 3.3 Semiannual Ground Water Monitoring for Hydrocarbons 4.0 SITE WORK 4.1 4.2 4.3 4.4 4.5 Soil Gasoline Vapor Survey Monitoring Well Installation Soil Sample Collection and Analyses Monitoring Well Development, Ground Water Sample Collection, and Analysis Survey and Ground Water Levels 5.0 SCHEDULE 6.0 REMARKS/SIGNATURES 2 2 3 3 3 4 4 4 4 4 11 11 11 12 '12 TABLE 1 TABLE 2 Tables Ground Water Elevation Data and Physical Observations Ground Water Analytical Results FIGURE 1 FIGURE 2 FIGURE 3 FIGURE 4 FIGURE 5 Figures Site Location Map General Layout of Water Treatment System Site Vicinity Map Proposed Monitoring Well Construction Detail Project Schedule APPENDIX A APPENDIX B Appendices Kight-of-Enwj Agreement Between Davies Oil Company and Mr. Cyril Andre Field Methods and Procedures WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECT STATUS DAVIES OIL COMPANY 3305-1/2 GULF STREET BAK"E. RSFIELD, CALIFORNIA DELTA PROJECT NO. 40-87-326 1.0 INTRODUCTION Delta Environmental Consultants, Inc. (Delta), is submitting this report on behalf of Davies Oil Company (Davies), Bakersfield, California. Delta has been authorized by Davies to assist in a hydrogeologic investigation and remediation of their site due to a gasoline release of approximately 2,500 gallons in the Fall of 1985. Figure 1 presents the site location map. The purpose of this report is to propose a work plan for an off-site hydrogeological investigation (on adjacent properties owned by Messrs. Cyril Andre and Jim Boylan) to define the downgradient extent of the petroleum hydrocarbon plume in the soil and ground water. The project remediation status and the fight-of-entry status to secure off-site access are included. Since Delta's last report (Remedial Action Status and Semiannual Ground Water Monitoring Report, dated February 28, 1990) the following work was performed: Pursued efforts to obtain right-of-entry to adjacent property owned by Mr. Cyril Andre. Access to Mr. Andre's property is necessary to Davies to conduct additional site hydrogeological investigation of petroleum constituent migration and to proceed with possible remediation. A right-of-entry agreement was signed between Davies and Mr. Cyril Andre in August 1990 after negotiations between Davies, Mr. Andre, and their respective attorneys. A copy of the signed agreement is shown in Appendix Pt. The ground water recovery and treatment system operation continues to be shut down due to a continuously declining ground water table. WORK PLAN FOR ADDITIONAL OFF-SrrE HYDROGEOLOGICAL IN~E~GATION AND PROJECT STATUS Davies Oil Company 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 2 · Depth to ground water and product thickness in recovery well RW-1 were measured in May, July, and August 1990. 1.1 Scope of Work Delta proposes to drill and install three ground water monitoring wells off site to evaluate the downgradient extent of petroleum hydrocarbon constituents in the soil and ground water. One upgradient on-site well is proposed to monitor the hydrogeologic conditions adjacent to the existing infiltration gallery. The following tasks will be conducted in order to achieve the objective of the off-site investigation: · Assess feasibility of a so//gas vapor survey. · Drill and install four ground water monitoring wells. · Collect and screen soil samples for laboratory analysis. · Develop new monitoring wells. · Sample new monitoring wells for laboratory analysis. · Measure water levels and product thickness, if present, in all wells. · Survey the casing elevation of the new wells relative to existing wells. · Prepare data report presenting results. 2.0 BACKGROUND INFORMATION 2.1 Site Location and Description The site is currently occupied by an operating gasoline service station and related office buildings at 3305-1/2 Gulf Street, Bakersfield, California. The layout of the existing ground water recovery and treatment system is illustrated in Figure 2. WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECT STATUS Davies Oil Company 3305-1/2 Gulf Street Bakersfield~ California Delta Project No. 40-87-326 Page 3 2.2 Previous Work Conducted at the Site Petroleum product releases were detected and identified in the soil and ground water at the' site. Information relating to on-site hydrogeological assessment, ground water cleanup, and all work conducted at the site from July 1986 to February 1990, is discussed in the following reports: Report Proposed Hydrogeologic Investigation Proposed Hydrogeologic Study Subsurface Contamination Assessment Quarterly Monitoring Results and Proposed Additional Work Quarterly Monitoring Report Proposal for Additional Site Assessment and Remedial Action Semiannual Ground Water Monitoring Report and Proposed Additional Work Remedial System Monitoring Report Remedial Action Status and Semiannual Ground Water Monitoring Report Date Author February 25, 1987 Twin City Testing (TCT) April 22, 1987 TCT July 9, 1987 TCT January 10, 1988 Delta June 10, 1988 Delta November 9, 1988 Delta May 25, 1989 Delta August 18, 1989 Delta February 28, 1990 Delta 3.0 PROJECT RESULTS 3.1 Ground. Water Remediation Status The ground water recovery and treatment system operation continues to be shut down due to a continuously decreasing water table. The system was operated between June 29, 1989, and February 19, 1990. System operation was shut down on February 19, 1990, due to a low water level condition which limited the drawdown in recovery well RW-1 to continue effective site cleanup. As of February 19, 1990, the system had recovered and treated approximately 8,002,400 gallons of water contaminated with petroleum hydrocarbons prior to being discharged to the infiltration gallery on site. Approximately 57 gallons of free product had been recovered from RW-1 as of February 17, 1990, and stored on site. WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECT STATUS Davies Oil Company 3305-1~ Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 4 3.2 Ground Water Elevations and Physical Observations Depth to water and free product thickness were measured in recovery well RW-1 on May 31, July 25, and August 16, 1990. Based on measurements from R,W-1, the water table has dropped further by approximately 4.6 feet between February 19 and August 16, 1990. Based on historical data, the water table dropped approximately 19 feet between July 11, 1986 and August 16, 1990. All on-site monitoring wells have continued to be dry from February 19, 1990. The most recent and historical ground water elevation data and physical observations for each well are presented in Table 1. Measurements dating to July 1986 are included for comparison. 3.3 Semiannual Ground Water Monitoring for I][¥drocarbons The semiannual ground water monitoring scheduled for March/April 1990 was not performed, as all on-site monitoring wells have continued to be dry since February 19, 1990. Table 2 presents analytical results of all monitoring well sampling conducted from May 1987 to October 1989. 4.0 SITE WORK 4.1 Soil Gasoline Vapor Survey Delta is currently reviewing the feasibility of performing a soil gasoline vapor survey (SGVS) to assist in off-site monitoring well placement. The effectiveness of an SGVS is closely linked to the geologic site conditions present above the water table. Figure 3 presents a site vicinity map. The SGVS will be performed on properties owned by Messrs. Cyril Andre and Jim Boylan. 4.2 Monitoring .Well Installation 'Four monitoring wells (three off site and one on site) will be installed at the site for the purpose of (1) evaluating the downgradient extent of petroleum hydrocarbon constituents present in the soil and ground water that originates from the site, (2) monitoring ground water quality and ground water levels across the site, and (3) monitoring upgradient hydrogeologic conditions adjacent to the existing infiltration gallery (on-site well). The locations for these off-site monitoring wells will likely be proposed within the available space adjacent to the site (Figure 3) pending results and' evaluation of the SGVS. In the event a SGVS is determined unfeasible as a tool for monitoring well placement, locations for monitoring wells will be proposed based on currently available hydrogeologic data. The wells will be installed after obtaining approval from the Regional Board and the Kern County Health Department. WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECt STATUS Davies Oil Company 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-8%326 Page 5 TABLE l Ground Water Elevation Data and Physical Observations Monitoring Well Date 07/11/86 05/08/87 10/22/87 12/03/87 O3/O4/88 11/o2/88 01/13/89 03/13/89 06/'Z6/89 10/'25/89 11/09/89 01/04/90 O2/07/9O 05/31/90 07/25/9O O8/16/90 07/11/86 05/O8/87 10/22187 12/03/87 O3/O4/88 05/0'2/88 11/02/88 01/13/89 03/13/89 06/26/89 10/25/89 11/09/89 01/04/90 O2/O7/9O 05/31/90 07/25/9O 08/16/90 D~pth to Referen~ Ground Water Ground Elevation (feet Elevation (feet Water (feet) above MSL) above MSL) 14.86 18.23 19.72 20.66 19,09 21.24 22,83 19.93 20.22 Dry Dry Dry Dry Dry Dry Dry Dry 15.02 17.87 19.35 20.43 19.07 20.70 22.79 20.04 20.45 Dry Dry Dry Dry Dry Dry Dry Dry 4O933 409.31 394.47 391.10 389.61 388.67 390.24 388.09 386.50 389.38 389.11 394.29 391.44 389.96 388.88 390.24 388.61 382.56 389.27 388.86 Physical Observations/ Comments Approximately 4" free product Approximately 0.5' free product Approximately 0.06' free product Approximately 0.8' free product Approximately 0.25' free product Approximately 0.2' free product Rainbows visible, strong odor Rainbows visible, no product No product Noticeable odor No odor Slight odor Rainbow visible, slight diesel odor Slight odor Slight odor Slight odor WORK PLAN FOR ADDITIONAL OFF-SrFE HYDROGEOLOGICAL [NVES~GATION AND PROJECT STATUS Davies Oil Company 3305-1/'2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 6 TABLE 1-Continued Ground Water Elevation Data and Physical Observations Monitoring Well Date MW-3 07/11/86 05/08/87 10;22/87 12/03/87 0~/0'2~ 01/13/89 03/13/89 06f26/89 10/25/89 11/09/89 02/07/9O 05/'31/90 07/25/9O 08/16/90 MW4 07/11/86 05/O8/87 10/22/87 12/03/87 03/O4/88 05/O2/88 11/02/88 01/13/89 03/13/89 O6/26/89 10/25/89 11/09/89 01/0~/90 O2/O7/9O 05/31/90 07/25/9O 08/16/90 MW-5 03/13/89 O6/26/89 10/25/89 05/31/90 07/25/9O 08/16/90 Depth to Reference Ground Water Ground Elevation (feet Elevation (feet ~Water (feet] above MSL] above MSL) 15.37 410.22 394.85 18.34 391.88 20.00 390.22 20.77 389.45 19.42 390.80 21.10 389.12 20.77 389.45 Dry -- Dry -- Dry -- Dry -- Dry ~ Dry ~ Dry ~ Dry ~ 15.06 409.72 394.66 17.87 391.85 18.46 391.26 20.41 389.31 19.03 390.69 20.58 389.14 22.50 389.22 20.08 389.64 20.30 389.42 Dry -- Dry -- Dry -- Dry ~ Dry -- Dry -- Dry -- Dry ~ 18.32 407.62 3893O 21.79 385.83 ~ ~ ~ Physical Observations/ Comments Rainbows visible, no product No product Noticeable odor Slight odor Slight diesel odor Slight odor Slight diesel odor No odor No odor No odor Brown; silty No odor No odor, casing wet No odor No odor No odor No odor No odor Not measured No odor No odor No odor WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL Ii~v'ESTIGATION AND PROJECT STATUS Davies Oil Company 3305-1~ Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 7 TABLE 1-Continubd Ground Water El~ration Data and Physical Observations Monitoring Well Date lVlW-8 ' 05/08/87 10/22/87 12/03/87 O5/O2/88 01/13/89 03/13/89 O6/26/89 10/25/89 1V09/89 0~04/90 02/07/90 05/3V90 07/25/90 08/16/90 10/22/87 12/03/87 03~4/88 05~ 01/1~/89 03/L~/89 06~26/89 10/25/89 11~)9/89 01~4~0 02~07/90 05~1/90 07~;.5/90 08/16/90 MW-10 03/03/88 O5/O2/88 113Y2/88 01/13/89 03/13/89 06/26/89 07/27/89 10/2~/89 01/04/90 02/07~0 05/31~0 08/16/90 Depth to Reference Ground Water Ground Elevation (feet Elevation (feet Water (feet) abov~ MSL} above MSL] 18.00 409.68 391.68 19.60b 390.08b 19.27 390.41 Dry -- Dry m 2O.7O 388.98 Dry -- Dry -- Dry m Dry -- Dry -- Dry -- Dry -- Dry -- 15.37 406.60 391.23 17.38 389.22 18.12 388.48 16.70 389.90 18.26 388.34 Dry -- 17.87 388.72 · 18.2O 388.40 ' Dry -- Dry -- Dry -- Dry -- Dry -- Dry ~ Dry ~- Dry ~ 17.52 408.12 390.60 19.28 389.04 21.00 387.12 18.36 389.76 18.82 389.30 22.52 385.60 23.20 384.92 24.53 383.59 26.42 381.70 27.09 381.03 Dry -- Dry -- Dry -- Physical Observations/ Comments Brown; silty No odor No odor, casing wet Not measured No odor No odor No odor No odor Rainbows visible, no product No product Slight odor No odor Slight odor No odor No odor No odor No odor No odor No odor No odor No odor No odor WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECT STATUS Davies Oil Company 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 8 TABLE 1-Continued Ground Water Elevation Data and Physical Observations Monitoring Well Date Depth to Reference Ground Water Ground Elevation (feet Ehwation (feet Water (feet) above MSL) above MSL) Physical Observations/ Comments O3/04/88 19.23 05/IY2/88 20.78 11/02/88 23.57 01/13/89 20.62 03/13/89 20.63 06/26/89 24.37 07/27/89 25.95 10/'25/89 Dry 01/04/90 Dry 02/07/9O Dry 05/31/90 Dry 07/25/90 Dry 08/16/90 Dry 409.43 390.20 388.65 385.56 388.81 388.8O 385.06 384.24 Strong odor No product 0.75' free product 0.5' free product 0.3' flee product 0.0r free product 1.02' free product Strong odor Strong odor Strong odor Slight odor Slight odor Slight odor 03/04/88 18.62 408.67 390.05 05/02/88 20.16 388.51 11/02/88 22.86 385.81 01/13/89 19.81 388.86 03/13/89 20.02 388.65 06/26/89 24.54 384.77 07/27/89 25.39 384.05 10/25/89 26.60 383.08 01/04/90 Dry -- 02/07/9O Dry -- 05/31/90 Dry -- 07/25/90 Dry -- 08/16/90 ~ Dry -- Strong odor Slight odor 0.5' free product 0.2' flee product 0.1' free product 0.94' free product 1.02' free product 135' free product Strong odor Strong odor Strong odor Strong odor Slight odor RW-1 11/0'2d88 23.91 410.09 386.18 01/13/89 20.82 389.27 03/13/89 21.15 - 388.94 07/02/89 27.69 410.34b 38Z65 07/31/89 28.55 381.79 08/24/89 29.64- 380.70 09/07/89 29.10 381.24 10/25/89 30.22 380.06 11/08/89 30.71 379.63 12/08/89 30.50 379.84 01/04/90 31.55 379.34 02/07/90 31.65 378.69 02/19/90 30.31 380.03 05/31/90 33.10 377.49 07/25/90 34.50 376.00 08/16/90 35.10 375.37 aNot measured. bAdjusted elevation for assumed error. CCorrectod elevation for ground water recovery system well head modification. A specific gravity of 0.75 is assumed for free product corrections. 0.25' free product 0.2' flee product 0.0r free product Pumping level at 30 gpm Pumping level at 30 gpm Pumping level at 35 gpm Pumping level at 35 gpm Pumping level at 35 gpm Pumping level at 35 gpm Pumping level at 28 gpm Pumping level at 19 gpm Pumping level at 19 gpm Static level Static level; approx. 4" free product; strong odor Static level; approx. Z5" free product; strong odor Static level; approx. 2' free product; strong odor All elevations referenced to the bench mark located near fence corner at northeast end of Gulf Street. The bench mark is a white wood post, elevation 409.50 feet above mean sea level. Tho well elevations were surveyed by Delta on 05/02/88. WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECT STATUS Daviea Oil Company 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 9 Monitoring Well MW-2 MW-9 TABLE Ground Water Analytical Results Concentrations in parts per million (ppm) Date Ethyl- Sampled Benzene Toluene benzene X¥1enes 05/08/87b 0.089 NDc ND 0.089 10/22/87 0.005 0.22 ND 0.012 03/05/88 0.013 0.002 0.005 0.039 03/13/89 0.005 0.02 ND 0.02 10/05/89 ...d ........ March 1990 ......... 05/08/87b 10/22/87 10/05/89 March 1990 4.1 !3 1.3 4 0.0009 ND ND ND 0354 ND 0.003 0.001 0.01 12 03/05/88 ND ND 03/13/89 ND ND 10/05/89 ..... March 1990 ...... 05/08/87b 0.0018 0.0076 ND 0.0052 10/22/87 0.0001 ND ND ND 03/05/88 ND ND ND ND 03/13/89 ND ND ND ND 10/05/89 ........ March 1990 .......... 05/08/87b ND ND ND ND 10/22/87 ND ND ND ND 03/04/88 ND ND ND ND 03/13/89 ND ND ND ND 10/05/89 ............ March 1990 ............ 05108/87b 1.155 3.81 10/22/87 0.01 1.6 03/O4188 0.04 1.1 03/13/89 0.031 0.12 03/13/89(dup) .,r 0.033 0.13 10/05/89 .... March 1990 ...... 15.38 37 28 11 14 1.74 2.2 3.6 2.2 2.3 29 0.6 0.022 <0.05 <0.05 <0.05 <0.010 <0.05 <0.05 <0.05 33.4 170 70 56 61 Type Diesel #2 Gasoline Gasoline Dry well Dry well Gasoline and Diesel Dry well Diesel #2 Weathered gasoline Dry well 'Dry well Gasoline Dry well Dry well Gasoline Dry well Dry well Gasoline Gasoline Gasoline Gasoline Dry well Dry well WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJEC-~ STATUS Davies Oil Company 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 10 TABLE 2.Continued Ground Water Analytical Results Monitoring Date Ethyl- Well Sampled Benzene Toluene benzene MW-10 03/04/88 0.0022 ND ND 03/13/89 ND ND ND 10/05/89 ND ND ND March 1990 - ..... MW-11 03/04/88 10 89 3.2 03/13/89 ...... 10/05/89 -- -- -- March 1990 MW-12 03/05/88 0.6 4.2 3.7 03/05/88(dup) 0.9 5.6 2.3 03/13/89 .... 10/05/89 ...... March 1990 X¥1enes 0.002 37 42 29 TPHa <0.05 <0.05 <0.05 240 lO0 7O Type Gasoline Gasoline Dry well Gasoline 0.3' free product 0.86' free product Dry well Gasoline Gasoline 0.1' free product 1.0~' Wee product Dry well aTotal petroleum hydrocarbons. bValues from Twin City Testing Corporation, report, dated July 9, 1987. eNot detected. dNo$ sampled. WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJECT STATUS Davies Oil Company 3305-I/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 11 Thc generalized construction detail for the monitoring wells is shown in Figure 4. The wells will be constructed of 4-inch-diameter polyvinyl chloride (PVC) and installed to a depth of 50 feet below the surface. A 30-foot section of screened casing will comprise the base of the well to accommodate anticipated water table fluctuations throughout the life of the project. The monitoring Well casings will be fitted with watertight locking caps and protected by traffic-rated, watertight utility boxes. Imported graded sand will be placed adjacent to the well screen within the annular space. A sanitary seal will be placed above the annular sand pack. The seal will consist of approximately 2 feet of bentonite pellets placed above the sand pack and overlain with a sand, cement, and bentonite powder grout. The grout seal will extend to approximately I foot.below the top of the riser pipe. 4.3 Soil Sample Collection and Analyses Undisturbed soil samples will be collected at 5-foot intervals from the monitoring .well borings. The samples will be collected, preserved, and screened for chemical analysis as described in Appendix B (Field Methods and Procedures). The soil samples will be selected for laboratory analysis of organic vapor screening results and field observations. Selected soil samples will be submitted to a California-certified laboratory for analysis of benzene, toluene, ethylbenzene, and xylenes (BTEX), and total .petroleum hydrocarbons (TPH) as gasoline concentrations. Soil cuttings generated during drilling will be stored on site on a sheet of visquine and covered until an approved method of disposal is determined. 4.4 Monitoring Well Development, Ground Water Sample Collection~ and Analysis After installation, the new monitoring wells will be developed by bailing a sufficient volume of water to insure representative water sample quality. After the development water is purged from the well and the water level is sufficiently recharged, a sample will be collected for laboratory analysis as described in Appendix B. The ground water samples will be submitted to .a California-certified laboratory and analyzed for BTEX and TPH as gasoline concentrations. Ground water generated during the well development and sampling will be stored on site in a labeled 55-gallon drum until an approved method of disposal is determined. 4.5 Survey and Ground Water Levels Following installation of the monitoring wells, the top of the well casing and the ground surface elevation will be surveyed. The vertical elevation of each casing will be surveyed in reference to mean sea level to within 0.01 foot, allowing correlation of water levels between each well at the site. After the survey is complete, the depth to water will be measured in each well to within 0.01 foot. WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGICAL INVESTIGATION AND PROJEC~ STATUS Davies Oil Company ' 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Page 12 5.0 SCHEDULE The work outlined in this report can begin as soon as approval is obtained. A soil vapor survey, if performed, would be conducted in September 1990. If the soft vapor survey is not conducted, locations for the monitoring wells will be proposed in a letter for approval by the Regional Board and the Kern County Health Department. The monitoring wells installation is scheduled for completion in October 1990. Subsequent to monitoring well installation and laboratory analyses of soil and ground water samples, a problem assessment report will be submitted in November 1990. After review and approval of this report by the Regional Board and the Kern County Health Department, site remediation work can begin. The planned project schedule for completion of the hydrogeological investigation and remediation work through estimated site closure is presented in Figure 5. 6.0 REMARKS/SIGNATURES The recommendations contained in this report represent our professional opinions, and are based in part, on information supplied by the client. The,~ opinions are based on currently available information and are arrived at in accordance with currently accepted hydrogeologic and engineering practices at this time and location. Other than this, no warranty is implied or intended. DELTA ENVIRONMENTAL CONSULTANTS, INC. This report was prepared by: Ma~ti~/S. Burck - ' ~ Hydrogeologist Sudhakar R. Talanki Project Engineer/Project Manager Date The work performed in this report was done under the supervision of a California Registered Geologist: /law Geologist # 2303 ,, WORK PLAN FOR ADDITIONAL OFF-SITE HYDROGEOLOGIC INVF_,S'HGATION AND PROJECT STATUS DAVIES OIL COMPANY 3305-1/2 GULF STRE~ B). R'~.RSFIEJ.B, CAI.IFORNIA DELTA PROJECT NO. 40-87-326 Prepared by: DELTA ENVIRONMENTAL CONSULTANTS, INC. 3330 Data Drive, Suite 100 Rancho Cordova, California 95670 (91~) ~8-2o85 August 24, L990 A ~ '~ ~ " ' ' - .... ' ........ , ~ ~ , ~., ~ ~ ~. '~ : ~ , i ', '-- . ~'...:" ' ' - ~N~t - ~ ~ '~-~ ~ II:.~ ~ ..-1 .... :':~." - .......... ~~:,1~. = = = ~ ','''' ~ ~ ~m-~ ' ~" ' ::~ - '' ,.I ~ ' <: .' 7 :~:~. ' ' '~ ..4," ~' ' .. .. . , ~~~. ~ kk_.'.' ~~%~'-~""~- .... .. ,,>~.' .. . .... ...~G ."=~ .......... · "~o* . ~/ . ~', , ..,.~.,, ~. ~, ~,. ~ ........... ,~, , .~ . ,.,,~,~, ,~ ~ I ' ·~r~ I! '. ~ o , , o '~ *' .= ; '- .' , --''- --- ~ :" , ~ ~ Il . ' [ I1.~ a ~ o 0 :~.' ' ~ · I .... i ,-' , ~:;;,~ . . [ o .... ~ ...... I . ... ~ . ,, . . . .. ... . ,,. . = ? =,~ : ' ~,1· '~.~.~ ' ~../- , ,~ ~ , .--..-. :' ."~ ' · ~ ~V ~: ]l~i1~11-9! 397 ~NERAL ~TE~ ~ North ~SE MAP FROM U.~ ) O~DAL~ CA. 7.5 M~TE TO~GRAP~C FIGURE 1 SITE LOCATION MAP DAVIES OIL 3305 1/2 GULF STREET BAKERSFIELD, CA. 0 '. 2000 FT -- SRT 5125189 ~ I~. ELECTRIC SUPPLY .//. INFILTRATION ELECTRIC CONTROL PANEL FOR TREATMENT SYSTEM -~ ~E PAD GRAVEL DRIV~IA '~ ~ WATER ~ '~ TREATMENT SYSTEM ~ ~ A~ S~ER ~TRA~ER PUMP )RAGE TANK ! CAPACITY) TIRE STORAGE (AUTOMATIC FLOW CONTROL)! PAR~ATE FILTER ACTIVATED CARBON FILTER~ (2 IN SERIES) 4~ RW-1 RECOVERY WELL LOCAT1ON ' ~ MW-1 MONITOFUNG WELL LOCATION ~ LEAK (~) DRY' WELL · P-1 PtEZOMETER SITE SaJRVEYED MAY 2, 1988 0 ,lOFT FIGURE 2 GENERAL LAYOUT OF WATER TREATMENT SYSTEM DAVES 0~- 3305 1/2 GULF STREET BAKERSFELD. CA. P~'AA~KING DRIVEWAY STORAGE A'REA North t~ MW-1 MONITOR~ WELL LOCATION /~, RW-1 RECOVERY WELL LOCATION DRY WELL. LEAK UTI. JTY LOCATIONS ARE APPROXIMATE ONLY AND SHOOtD BE VERIRED ON SITE 0 100 Fl' SCALE 40,-87-326 FIGURE 3 SITE VICINITY MAP DAVIES OIL 3305 1/2 GULF STREET BAKERSFIELD, CA. FIGURE 4 PROPOSED MONITORING WELL CONSTRUCTION DETAIL Project: ...D.A.V.!E. ,S...O.!L., .C..O... ....... Oelta No:....4..0:.8..7.:3..2..6 .......... CONCRETE VAULT BOX -MATERIAL · WATER TIGHT (YES/NO) · SPECIAL KEYS OR LOCKS REQUIRED METAL 24 ~1. X 24 IN, YES YES 4 I~ICH DIA. PVC FLUSH THREADED RISER PIPE · - - DIAMI=TER ANO MATERIAL · JOINT TYPE GROUT SEAl, -TYPE OF GROUT AROUND RISER -GROUT SEAL THICKNESS BENTONITE ,S, EAl, - TYPE OF BENTONITE - BENTONITE SEAL THICKNESS FILTER PACK - DISTANCE OF FILTER SAND ABOVE TOP OF SCREEN - TYPE OF FILTER AROUND SCREEN APPROX. 15 FT P~LLFTS #3 LONESI'AR SAND OR EQUIVALENT WELL SCREEN - SCREEN MATERIAL - SCREEN GAUGE OR SLOT SIZE OF OPENINGS · DIAMETER AND LENGTH OF SCREEN SCH 40PVC OJ)~ IN. DI~P. TH T,p BOTTOM OF MONITORING WELL FROM TOP OF RISER PIPE TOTAL BORING DEPTH DIAMETER OF BORE HOL DRILLING ME~THOp L 2 =. ..... !.~'.5. ...... FT L 3 =. ..... .3.?~)...0. ...... FT L 4 =. ..... .~.:0. ...... FT TOTAL WELL DEPTH BELOW TOP OF RISER PIPE = .....4.9..5. ..... FT 49.5 FT 50.0 FT 10 INCI~S HOI. J.OW STEM A~ ADelta Environmental Consultants, Inc. PROJECT SCHEDULE PROdECT N. PROdECT NUMBER 40-87-,:326 · ....... 1992 1993 - TASK DESCRIPTION Jan Feb Mar 1st !2nd 5rd 4th 1st 2nd 3rd 4th ADDITIONAL OFF-SITE INVESTIGATION S~CURE R.O.F.. AND/OR E~CROACHME~T PERMIT INSTALL 3 OR MORE ADDITIONAL WELLS TO COMPLLr"~ PLUME DE~'INITION AND PERFORM ~ROUND WA1ER SAMPLING PRE~ARE AND SUBMIT PROBLEM ~ RE~ORT REMEDIATION OEI~IE OlSCHARGE C~'11g~A & PREPARE: PUMP al VA~ TEST PLAN CONOUCT PUMP AND EVALUATE REMEDIAL OPTIONS AND SUBMIT R.A.P. WATER D~_~_~T~Y OBTAINIm PREPARE PLANS AND SPECS. BID AND COt~CT' OEDE~ EQUIPMENT COTAIN AIR P~IT SY~ START--UP/'I~NG PLANNED ~OIL VAPOR EXTRACTION ~ MGN'II. tLY AIR P~MIT R~PO~T PLANNED GROUND WATI~ REMEDIATION SY~'TEM OPERATION & UAINTE~IANCE SEMI-ANNUAL ~ROUNO WATER ~ ~ ~ ~ MONITO~NG REPORT CLOSURE S~L VAPOR EXTRACllON SYS1EM CLOSURE: NEGo'nATIONS CONFIRMATION TESTING ~ ~_ _c~a_ JRE REPORT ~ DISMAN~.E: EQUIPMENT ~ GROUND WATE~ RE:MEDIATION Sy~'"iEM ~ ~_CJ~U_ RE NEGO'~AT~ON$ Q.O~UR£ REPORT ~ DISMAN'TLIE EQUIPMENT Right-of-Entry Agreement Between Davies Oil Company and Mr. Cyril Andre 08/23/90 09:41 ~'415 398 3301 KINDER & WUERFEL ~002 THIS AGREEMENT is entered into by and between DAVIES OIL COMPANY, a corporation (hereinafter referred to as "Davies"), the ALICE ANDRE TESTAMENTARY TRUST (hereinafter referred to as "Andre Trust"), and CYRIL ANDRE, individually and as Co-Trustee of the Alice Andre Testamentary Trust (hereinafter referred to as P~.CITAL$: A. At all times relevant hereto, certain investigation and remedial work has been undertaken under direction of the california Regional Water Quality Control Board (#R.W.Q.C.B.'"), relating to the property of Davies located at 3305'1/2 GUlf Street, Bakersfield, California. B. The R.W.Q.C.B. has requested that additional investigation be carried out on property adjacent to 3305 1/2 Gulf Street, in¢lud~n~ but not limited to certain property owned by the Andre Trust. C. The pa~ties hereto desire to enter into an agreement defining their respective obligations and providing for, among other things, the terms and conditions under which a right-of-entry on and upon Andre property will be permitted so that representatives of Davies may,enter upon said property to perform investigative/soil and groundwater remediation work as requested by the R.W.Q.C.B. 08/25/90 09:41 't~41S 398 $$01 KINDER & ~UERFEL ~003 THE PARTIES HERETO agree as follows: 1. Davies has enganged Delta Environmental Consultants ("Delta") to perform the investigative/ spil and groundwater remediation work referenced herein but may replace Delta and retain other consultants to complete the work. 2. The work will be conducted on the Andre trust property in three Phases. 3. The first Phase which shall be conducted under this agreement consists of a soll vapor survey. The soil'vapor survey will be used as a screening tool to assist in choosing monitoring well locations, if needed. As many as forty (40) vapor'points may be installed on and around the Andre property in connection with the first phase. All resulting holes in the asphalt from the soll vapor survey will be 9atdhed according to the proposal by Kern Asphalt Company using a hot asphalt mix to guard against moisture seepage. It is estimated that the first Phase of the work (the soil vapor survey) will consume 'aPproximately three (3) days. ' It is understood that the Andre trust, Cyril and all tenants on the Andre trust property will be notified at least three (3) days'in advance of the impending work. 4. Phase two of the investigation will consist of monitoring well installations and ground water sampling. It is estimated that at least three monitoring wells will.be proposed and. installed. Davies and/or Davies representative (Delta) shall use their best efforts to locate said monitoring wells immediately adjacent to the south property line of the Andre trust property between the existing building on the southernly portion of said property, as the date of this apreement, and the proposed building e8/23/90 09:~2 "~15 398 33e~ KINDER & ~UERFEL ~004 to be constructed on the easterly portion o~ the property, subject however, to orders of the R.W.Q.C.B.. The ground water will be sampled from the monitoring wells and a report will be issued detailing the results of the monitoring well installation and ground water sampling. A final remedial action plan will be developed based on the ground water data and this 91an will be included in the report. The monitoring wells shall be flush with the surface of the ground and/or asphalt. The Andre trust and Cyril shall be notified at least 3 days before the 9endlng work of the exact location of the monftorlng wells and the amount of time required to complete the work. All tenants of the. Andre trust property shall be notified at least 3 days before the pending work is to be commenced and the time required to complete said work. 5. Phase three will consist of implementation°f the remedial action plan. This will likely include installation Of a recovery well and all plumbing and electrical work. Davies shall use its best efforts to lobate the proposed recovery well immediately adjacent to the south property llne of the Andre trust property between the existing building on the southerly portion of said property, as of the date of this agreement, and the proposed building to be constructed on the easterly portion of the property, subject however, to orders of the R.W.Q.C.B.. The proposed recovery well shall be connected to the existing water treatment system which is located on Davies property immediately east o~ the Andre trust property. Davies shall use itSs best efforts to install the pipeline for the connection of the recovery well and the treatment system on the northerly portion of the "Jim Boylan# property which is immediately south and adjacent to the --3-- 08/23/90 09:42 '~'~5 398 330~ Andre Drogerty. If said DiDlines are not installed on the "Jim Boylan" 9=ogerty Andre shall have the righ~ to aDDrove the location in which said lines will be ins=ailed 9=~or to their installation, subject however, to orders of the R.W.Q.C.~...The Andre t=ust and Cyril shall be notified at least 3 days before the pending wo=k of the exact location of the recovery well and the amount of time required to comglete the work. All Tenants of the Andre trust shall be noti~'ie0 at least 3 days beEore ~he pending. work is to be commenced and ~he amount of time required to complete said work. In addition thereto Davies and i~s agents, emgloyees and representat£ves shall during said 3 day period meet with each tenant of the Andre ~rus= and arrange Eo perform the installation of the recovery well so as to minimize any interference with the da£1y routine'of said ~enants and'their use of the Andre 9roDe=ty during the installation period, phase three may also require use o~ the.mon~torlng wells as vago= extraction wells. If such wells are required they will be plumbed in trenches' to treatment facilities on Davies 9roger~y in conformance with all o~ the conditions set ~orth above as applicable to the recovery well. During the ~me that ~nvestigative/soil and groundwater remediation ~s ongoing, Davies may 9eriodically enter the proDerty to carry out_necessary oDerating, maintenance and monitoring activites. 6. In exercising any tight-of-entry, Davies its aQents, em91oyees and reDresentatives sba11 no~ Unreasonably interfere with the use oE the Andre D=ogerty or any Dart thereof by any tenant of the Andre trust. 09:~3 25'~15 398 330~ KINDER & ~UERFEL ~]006 7. It is understood by the parties hereto' that there is presently installed on the Andre property, below the surface of the ground, 3 large septic tanks and. leach.lines, plumbing pipelines, a drainage system and electrical conduit lines and equipment all of which was installed by the Andre trusts contractors and/or sub contractors subsequent to the Andre trust acquirin~ title to the real 9rogerty. The Andre.trust and Cyril have furnished to (Delta) copies of plans to aid Delta in determining the underground location of the improvements refered to above in this paragraph 7 of this agreement. The Andre trust and Cyril can not warrant that the aforesaid improvements are located as setforth in the plans furnished to Delta. In addition thereto there are underground water lines, gas I~nes, a septic tank and leach line as weil as electrical lines that service the mobilhome which presently is located on the northeast corner of the Andre trust property all of which were installed prior to the Andre trust acquiring title to said property. The Andre trust and Cyril do not know where these lines are located however it is believed they run in an easterly direction from Pierce Road to the mobilhome location. 8. As each phase is completed Davies shall repair at it's sole cost and expense, all damage which has been done to the Andre trust property in performance of the work required by the phase completed and to hold the Andre trust and Cyril harmless from all of such cost or expense. All asphalt that must be patched or replaced shall be according to the proposal of Kern Asphalt Company using a hot asphalt mix to guard against moisture seepage. 9. In addition thereto Davies shall hold the Andre trust -5- 08/23/90 09:44 '~415 398 3301 KINDER'& ~UERFEL ~007 and Cyril harmless from any and all claims which may be asserted against the Andre trust and/or Cyril by any tenant of the Andre trust for damages of any kind or nature suffered by such tenant as the result of the work performed on the Andre property by Davies, its agents, employees, and representatives. 10. Davies shall reimburse the Andre trust for any and all water and electricity use by Davies or its representataives in performin~ work under this agreement on the Andre trust property . unless such electricity and water are furnished by others than the Andre trust. 11. Davies shall reimburse the Andre trust for all the attorneys fees and related expenses incured by the Andre trust and Cyril in connection with preparation of this agreement (not to exceed $2,000.00), which'shall be paid upon receipt by Davies of a copy of the statement for fees and costs received by the Andre trust from the office of Bianco, Means & McBurnie. 12. At such time as'the cleanup has been completed and the R.W.Q.C.B. has issued a regulatory closure or similar order allowing Davies to terminate its work at the site the right of Davies to enter upon the Andre trust property pursuant to this ~greement shall terminate. Davies shall use its best efforts to cause the investigative/ soil and groundwater remediation work to be completed as promptly as possible. 13. In any action or proceeding by either party to enforce this agreement or any provision thereof, the prevailing party shall be entitled to all costs incured and to reasonable attorneys fees. -6- 08/23/~0 09:44 ~'415 398 330! KINDER & ~UERFEL ~08 IN WITNESS WHEREOF the parties hereto have executed this A~reement. ANY, a corporation Dated: ALICm. ANDRE T~STAM~NTARY TRUST ! Cyril Andre, Co-Trustee ,.To Andre, Co-Trustee Joe Andre, Co-Trustee Cyril Andre, Individually -7- APPF. ND~ B Field Methods and Procedure~ 1.0 METHODS 1.! Soil Sampling and Contamination Reduction Soil borings and soil sampling w/Il be performed under the direction of a qualified Delta representative. The soil borings will be advanced using a truck-mounted hollow-stem auger drill rig. .To reduce the chances of cross-contamination between boreholes, all downhole drilling equipment will be steam-cleaned between each boring. To reduce cross-contamination between samples, the split-barrel sampler is washed in a soap solution and double-rinsed between each sampling event. Soil sampling conducted in accordance with ASTM 1586-84, will use a 2-inch outside-diameter split-barrel sampler or a 2-inch inside-diameter California-type sampler driven into the soil by a 140-pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sampler an additional 12 inches, known as penetration resistance or the MN' value is recorded. The 'NM value is used as an empirical measure of the relative density of cohesionle~ soils and the consistency of cohesive soils. The sampler is lined with three brass sample tubes, each 6 inches long and the outside-diameter equal to the iasid~-diameter of the sampler. Upon recovery, a portion of the soil sample is placed into a plastic bag and sealed for later screening with a photoionization detector (PID) as described in Section 1.3. A representative portion of the soil sample will be used for classification and description. The soil sample collected in the leading brass tube within the California-type sampler was labeled, sealed, and stored on ice for transport to the laboratory. 1.2 Soil Classification As the samples were obtained in the field, they are classified in accordance with the Unified Soil Classification System. Representative portions of the samples will be retained for further examination and for verification of the field classification. Logs of the borings indicating the depth and identification of the various strata, the ~N~ value, and pertinent information regarding the method of maintaining and advancing the borehole Will be made. 1.3 Soil Sample Screeninp./hNu Portable Photoionization Detector Method After the soil samples in the plastic bags are warmed to approximately ambient temperature, the organic vapors within the headspace of the soil sample jars will be screened with a portable photoionization detector equipped with a 10.2 eV lamp calibrated to benzene. The sample bag will be opened and the detector probe immediately placed within the headspace of the bag. The highest observed reading will be recorded. This number provides a relative comparison of the petroleum hydrocarbon concentration with the soil samples but is not quantitative. 1.4 Monitorin~ Well Gravel Pack and Slot Size Selection The size of the gravel pack to be placed adjacent to the well screen, is determined by the project manager based on an estimation of the distribution of grain size in the formation encountered within the uppermost saturated zone at the site. Available geologic information will be utilized in the selection of the gravel pack. The gravel pack is selected to allow the development of a zone of higher hydraulic conductivity material adjacent to the well screen without allowing entry of finer-grained formation' materials into the well bore. The slot size of the Well screen will be selected to retain a minimum of 95 percent of the gravel pack material. L$ Monitorim~ Well Development Each monitoring well will be developed by bailing or pumping until the water produced is sediment-free and measurements of pH, specific conductance, 'and temperature have stabilized. No water or chemicals will be introduced into the monitoring wells during well development. All development water will be placed in labeled drums and stored on site pending later disposal. 1.6 Ground Water Sampling After water levels are allowed to stabilize in the well, three to five wetted casing volumes of liquid will be removed from each well by bailing with a laboratory-cleaned teflon bailer or pumping. Measurements of pH, specific conductance, and temperature are to be made at regular intervals during this procedure. Removal of liquid from each well will continue until the measured pH, specific conductance, and temperature have stabilized. A liquid sample will then be collected from each well with a dedicated, disposable teflon bailer. Each sample will be appropriately labeled and stored on ice from the time of collection through the time of delivery to the laboratory. Ground water samples will be transported to the laboratory and analyzed within the EPA-specified holding times for the requested analyses. 2.0 QUALITY ASSURANCE PLAN 2.1 General Sample Collection and Handling Procedures Proper collection and handling are essential to ensure the quality of a sample. Each sample will be collected in a suitable container, preserved correctly for the intended analysis, and stored prior to analysis · for no longer than the maximum allowable holding time. 2.2 Sample Identification and Chain-of-Custody Procedures Sample identification and chain:of-custody procedures ensure sample integrity and document sample possession from the time of collection until analysis. When the samples are shipped, the person in custody of them will relinquish the samples by signing the chain-of-custody form and noting the time. The sample- control officer at the laboratory will verify sample integrity and confirm that it is in the property container, 'preserved correctly, and that there is adequate volume for analysis. When these conditions are met, the sample will be assigned a unique log number for identification throughout analysis and reporting. The log number is recorded on the chain-of-custody form and in the legally-required log book maintained in the laboratory. The sample description, date received, client's name, and any other relevant information will also be recorded. Each sample container submitted for analysis will have a label affixed to identify the job number, sampler, date and time of sample collection, and a sample number unique to that sample. Tiffs information, in addition to a description of the sample, field measurements made, sampling metlaodolo~, names of on-site personnel, and any other pertinent field observations will be recorded on the borehole log or in the field records. Samples will be analyzed by a California..c, ertified laboratory. Groundwater Scientists ° Environmental Consultants Seotember 1993 Groundwater Quarterly Monitorina Report Davies. Oil 3305 1/2 Gulf Street Bakersfield, California Presented To: Bill Davies Davies Oil and Ms. Dolores Gough Kern County Environmental Health Services Department Presented By: AquaGeosciences, Inc. September, 1993 Patrick McCullough staff Geologist Ph'dip G~alwin, R.G. #4779 Principal Hydrogeologist~.::. ......-No. 4779 Registration Expires 6~30~94 (...~...~ 1701 Westwind Drive, Suite 101 ° Bakersfield, California 93301 (805) 328-0962 ° FAX (805) 328-1129 TABLE OF CONTENTS SECTIONS 1.0 2.0 3.0 4.0 4.1 4.2 4.3 4.4 5.0 6.0 7.0 8.0 9.0 10.0 INTRODUCTION FACILITY DESCRIPTION PROJECT HISTORY GROUNDWATER MONITORING Groundwater Elevation Groundwater Monitoring Well Purging Groundwater Sample Collection Analytical Results DISCUSSION OF ANALYTICAL RESULTS SITE GEOLOGY SITE HYDROGEOLOGY CONCLUSIONS RECOMMENDATIONS LIMITATIONS Page # 2 2 2 3 4 4 4 4 5 6 6 7 8 9 Exhibit 1 Exhibit 2 Exhibit 3 Exhibit 4 Vicinity Map PIct Plan Map Groundwater Gradient Map Groundwater impacted with TPHg TABLES September 1993 Groundwater Monitoring - Liquid Level and Analytical Data Historical Groundwater Monitoring - Liquid Level Data Historical Groundwater Monitoring - Analytical Data Appendix A Groundwater Purge Data Sheets ' Appendix B Chain of Custody and Analytical Results 1.0 Introduction This report presents the results of the September 1993 Quarterly Groundwater Monitoring performed by AquaGeosciences, Inc. (AGI) at the Davies Oil Company at 3305 1/2 Gulf Street, Bakersfield, California. On September 20, 1993 depth to water measurements were collected from wells on and around the site. The wells were then purged and sampled for chemical analyses. ;~.0 Facility Description Davies Oil is located at 3305 1/2 Gulf Street in the City of Bakersfield, Kern County, California (Exhibit 1). The site is currently operated as a gasoline and diesel dispensing service station and contains two gasoline and four diesel dispenser islands, along with an office complex. The site is surrounded by commercial operations and residential property. The facility is shown to scale on Exhibit 2. 3.0 Pro!ect History_ During the winter of 1985, inventory records first detected product losses from the regular-gasoline dispensing system. In response to these losses, a pressure test was conducted on the tank and lines which indicated a leak in the regular-gasoline product lines. The suspect faulty line was repaired, but shortly thereafter, inventory records again indicated product losses. The tanks and lines were tested again on March 3, 1986 where a leak in the vapor lines was detected then subsequently repaired. On July 1987, Twin Cities Testing Corporation estimated 2,500 gallons of regular-gasoline may have been lost on site. Shortly thereafter, Davies Oil contacted KCEHSD of the situation. In October 1986, three (3) 10,000 gallon underground storage tanks were removed from the Davies facility because they were no longer in use. According to the KCEHSD, diesel fuel was detected in soil samples obtained during the excavation. Information generated by several prior consultants including Delta Environmental Consultants, Inc., Aegis Environmental, Inc., and Associated Soil Analysis, Inc. reveal the presence of both soil and groundwater contamination by gasoline range hydrocarbons at the subject site. A total of seventeen (17) groundwater monitoring wells, (nine (9) two inch and eight (8) four inch diameter) have been installed on-site. Additionally, there are two groundwater recovery wells, one 12-inch and one 6-inch diameter, designated as RW-1 and MW-12a. A groundwater treatment system was installed that consisted of a packed column air stripper for dissolved phase hydrocarbon removal and two carbon filters in line at the effluent port pdor to discharge to an on-site infiltration gallery. During installation and operation of the treatment system in 1988 and 1989, the water table was relatively stable between 18 2 and 22 feet below ground surface (bgs). In February of 1990, the water table dropped below the bottom of the groundwater recovery well at 36 feet bgs due to regional drought conditions, rendering the remediation equipment temporarily inoperative. In November of 1988, hydraulic conductivitY tests were performed by Delta Environmental Consultants, Inc. This test was performed on RW-1 using a short duration pump test. Transmissivity was estimated to be 12,000 gpd/ft and hydraulic conductivity was calculated at 70 ft/day. A maximum 'plume extent was then calculated and was estimated at 1100 ft down gradient and was later confirmed by down gradient monitoring wells MW-13 and MW-14a. A soil vapor survey was conducted in November 1990 to establish the limits of hydrocarbon vapors in the soil. In January 1991, three (3) 4-inch diameter monitoring wells were installed down gradient of the plume (MW-13, MW-14, and MW-15) and one 4-inch well upgradient (MW-16) at the northern boundary of the property. Well depths ranged from 48.5 feet to 55.0 feet bgs. Groundwater analyses revealed benzene contamination above State Action Levels (SAL) in down gradient wells MW- 13, MW-14, and MW-15. Upgradient well MW-16 showed non-detect (ND) results for all analytes. MW-14 however, exhibited the highest levels of dissolved hydrocarbons due to its central position down gradient of the gasoline plume. All four groundwater monitoring wells became dry in Apdl 1991 due to a continuing decline of the water table. The deepest well was MW-13, completed to a depth of 55 feet bgs. In March 1992, four of the groundwater monitoring wells were twinned with deeper wells screened from 30 to 60 feet bgs to accommodate the declining water table. The new wells were designated MW-la, MW-11a, MW-12a, and MW-14a. All wells were completed with 4-inch Schedule 40 PVC casing and liner, except for MW-12a, which was completed with 6-inch diameter PVC casing. A pump test was conducted on MW- 12A before plumbing it to the air stripper tower on-site. The groundwater remediation unit was apparently re-started in fall 1992, but due to Iow flow rates, high drawdown, and a continuing decline in the water table, was shut down once again a few months later near the end of 1992. The project has apparently been idle since that time. In September 1993, AGI was retained by Federated Insurance to begin quarterly groundwater monitoring, develop and implement a Remedial Action Plan. 4.0 Groundwater Monitorina The following sections detail the methods and procedures used in conducting the field work on September 20 & 21, 1993. The field work included measuring groundwater levels, purging wells, and collecting groundwater samples. The purpose of the monitoring was to assess the groundwater gradient, and the concentration, distribution, and type of petroleum constituents in groundwater. 4.1 Groundwater Elevation Groundwater elevation data was collected from Monitoring Wells MW-la, MW-10, MW- 12, MW-13, MW-14a, MW-15, and MW-16. Monitoring Wells MW-1 through MW-8, MW-11, and MW-14 were dry. Monitoring well MW-9 was not located. The recovery wells RW-1 and MW-12a were not sampled due to the presence of pumps and manifold equipment. In those wells sampled, the depth of freestanding groundwater was measured to the nearest one hundredth (0.01) of a foot using a Solinst water level indicator. The Solinst water level indicator and attached measuring tape were washed in Alconox and rinsed prior to each use. The well elevations were surveyed by Delta Environmental Consultants, Inc. All elevations were referenced to a bench mark located near the fenced corner at the northeast end of Gulf Street. The bench mark consists of a white wood post with an elevation of 409.50 feet above mean sea level. Measurements and reference elevations were taken from the north top edge of the well casing. 4.2 Groundwater Monitoring Well Purging Three (3) to four (4) well casing volumes were removed from each well using a purge pump prior to collecting a water sample. The volume of water to be removed was calculated by subtracting the depth to groundwater from the total depth of the well and multiplying by the cross sectional area of the well casing. Water temperature, pH, 'and conductivity were measured after the removal of each well volume. When the measurements were within 10% of Previous measurements, the well was considered stabilized for sampling. The purge data sheets documenting the field results are included as Appendix A. 4.3 Groundwater Sample Collection Groundwater from each monitoring well was sampled for laboratory analyses following the purging of the well, Groundwater samples were collected by lowering a disposable PVC bailer into each monitoring well. Two 40-milliliter VOA vials and a one (1) liter amber bottle were filled with the collected groundwater sample and sealed with teflon-lined lids. Care was taken to ensure no headspace or air remained trapped within the vial or bottle when sealed. The water samples were immediately placed in an iced cooler at 4° centigrade for storage and transport. The samples were logged on a chain of custody document, and transported to'a California certified laboratory for chemical analyses. 4.4 Analytical Results Seven (7) groundwater samples were analyzed by Halcyon Laboratories of Bakersfield, a State certified laboratory, in accordance with State guidelines and EPA protocols. The groundwater samples were analyzed for total petroleum hydrocarbons 4 as gasoline (TPHg), diesel (TPHd), benzene, toluene, ethylbenzene, and total xylenes (BTEX) using DHS Luff Method / 8015M and EPA Method 8020/5030, respectively. The Method Detection Limits for the laboratory analyses were 50 ug/I for TPHg, and TPHd, and 0.3ug/I for BTEX. The laboratory reports and chain of custody documents for these samples are included in Appendix B. Table 1 below summarizes the laboratory results. SUMMARY OF LABORATORY ANALYSIS OF GROUNDWATER SAMPLES FROM SITE INVESTIGATION* September 20 & 21, 1993 ' Ethyl Total iBoring Depth(ft) Benzene Toluene Benzene Xylene TPI.-Ig TPHd MW-la 25.28 ND 7 1 8 1300 ND M W - 1 0 24.72 ND ND ND ND ND ND MW-12 26.83 230 2800 620 1300 150000 ND MW-13 29.21 5 12 1 59 12000 ND M W - 14 a 28.6 ND ND ND ND ND ND M W - 15 27.65 ND ND ND ND ND ND M W - 1 6 23.38 ND ND ND ND ND ND * Results reported in ug/L (ppb) TPHg -- Total Petroleum Hydrocarbons as gasoline TPHd = Total Petroleum Hydrocarbons as diesel ND = Non-Detect BTEX MDL = 0.3ug/1 TPHg and TPHd MDL = 50ug/l 5.0 Discussion of Analytical Results Monitoring wells MW-la, MW-12 and MW-13 had reported concentrations for TPH(g) and BTEX above State Action Levels (SALs). The highest concentrations of dissolved petroleum hydrocarbons were reported in Monitoring well MW-12 with concentrations of 230 ppb for benzene and 150,000 ppb for total petroleum hydrocarbons as gasoline (TPHg). Although dry, the neighboring wells MW-2 and MW-11 yielded strong petroleum odors when opened to the atmosphere (Appendix A). Laboratory analyses of MW-10, 14a, 15 and 16 resulted in non-detectable concentrations for TPH(g), TPH(d) and BTEX. 6.0 Site Geology The sediments underlying the site are Quaternary alluvial and fluvial deposits consisting of unconsolidated fine- to coarse-grained sands and sandy silts (Calif. Div. of Mines and Geol., 1964~). The soil in the subsurface encountered from previous work consists of well graded to poorly graded sands and gravels to a depth of approximately 65 feet below the surface grade (bsg). 7.0 Site Hvdro(]eoloov Published data (KCWA, 19903) shows the site is located within a region of groundwater mounding. The mounding is presumably a result of groundwater recharge from large surface holding ponds in association with a water purification plant, located approximately 1/4 mile to the northeast. The regional groundwater gradient beneath the site is shown to be to the southwest. Previous work at the site indicated the depth to groundwater remained between 14 to 19 feet (bsg) from July 1986 to March 1989. In subsequent years the depth to groundwater progressively increased, resulting in the drying of several monitoring wells. The continuous drop in groundwater level is believed, in part, the consequence of the prolonged regional drought conditions which existed throughout central and southern California from about 1986 to 1992. In September, 1992 the average depth to groundwater at the site was approximately 35 feet (bsg). On September 20 & 21, 1993, AGI personnel collected groundwater measurements at the site from the existing monitoring wells, and the results are shown in Table 2. Groundwater measurements collected on September 20 & 21, 1993 show the depth to groundwater has risen to an average depth of about 25 feet (bsg), reversing the declining trend in groundwater level. An interpretation of the groundwater data (Exhibit 3 ) shows the groundwater has a gradient of approximately 0.009 feet/foot in a southwesterly direction, concurring with the regional groundwater maps. California Division of Mines and Geology, 1964, Geologic Map of California, Bakersfield Sheet Kern County Water Agency, 1990, Improvement Distdct No. 4, 1989-Report on Water Conditions 6 TABLE 2 .................. .S..U..M...U6..R..Y' g.F...G.R..O..U..N.p.W.A..T..E.R...E.~y.A..T.I.O..N..S..(~). ....................................... ~~~:~~~:~:.:~:~~~:~:~~~:~~~:~~~~~~~:~:~~~~~:~~~:~:~:~:~:~:~..~~~:~:~:.:~:~~~:~:~:~:~:~:~:.~.~~:~:~:~~~:~~~~~:~:~:~:~:~:~~~..~~~~~:~:.~~:~:.~~~~:~:~:~:~:~:~:~:~:~:.~~:~:~:~:~:~~~~~:~:~:~:~:~:~~~:~:~...:~:~:~:~~.:~:~:~:~:~~~:~:~~~:~:~:~:~ ~~:~:.~~~.~~:~:~:.:~:~:.~.~~:~~~:~~.:.:.:~:.:.:~~~:~:~:~:~:~:.:~:.:.:'~.:~~~:.~~:.~~:~..~:~:~:~:~:~:.:~:~:~:~:~:~:.:~~~:~:.:~:.:.:~:~:~:~:~:.:~:~:~:~:.:~:~:~~.:~:~:~:~:~~~~.~~:~~~:~:~:.:~:~:.:.~~:~:~:~..~:~:~:~:~:~:~:~..~:.~~:~:~~~:~.~ Elevation ; Depth Groundwater Elev. Boring Date Top of Casing to Groundwater (Ref. to bench mark) MW-1 9/20-21/93 409.33 dry MW-la 9/20-21/93 408.10 25.28 382.82 MW-2 9/20-21/93 409.31 dry/ MW-3. 9/20-21/93 410.22 dry' MW-4 9/20-21/93 409'.72 dr}, MW-5 9/20-21/93 407.62 dry MW-8 9/20-21/93 409.68 dr}' MW-9 9/20-21/93 409.60 not located MW-10 9/20-21/93 408.12 24.72 383.40 MW-11 9/20-21/93 409.43 dry MW-11a 9/20-21/93 407.58 25.19 382.39 MW-12 9/20-21/93 408.67 26.83 381.84 M W- 12 a 9 / 2 0 - 21 / 93 did not measure MW-13 9/20-21/93 406.91 29.21 377.70 MW-14 9/20-21/93 408.63 did notmeasure MW-14a 9/20-21/93 405.67 28.6 377.07 MW-15 9/20-21/93 406.79 27.65 379.14 MW-16 9/20-21/93 407.50 23.38 384.12 RW-1 9/20-21/93 410.34 27.6 382.74 8.0 Conclusions There are a total of seventeen (17) groundwater Monitoring Wells and two (2) groundwater recovery wells located on and adjacent to the subject site. The initial ten (10) wells (MW-l, 2, 3, 4; 5, 8, 9, 10, 11, and 12) were advanced to total depths of between twenty five (25) and thirty (30) feet below ground surface. Sedimentation and silt accumulation has caused eight (8) of the original' ten (10) wells to become "dry" at the present groundwater elevation. Two (2) of the original ten (10) wells (MW-10 and MW-12) had oneto two feet of perforations open and were sampled. The highest concentrations of petroleum hydrocarbons reported in this sampling episode were found in MW-12. Interestingly, MW-12 contained only one-half foot of free standing water and has not been sampled since March 4, 1988 due to either floating hydrocarbons or groundwater elevation dropping below open pedorations. The volume of water capable of being purged from this well, although sufficient to meet stability and volume requirements, may not have yielded a groundwater sample indicative of present aquifer conditions. Monitoring Well MW-12 is located along the western edge of the Davies Oil site; however, it is centrally located with respect to the groundwater plume. Therefore, an inaccurate or a non-representative groundwater sample from this location significantly influences interpretations regarding the extent, distribution, and concentration of petroleum constituents in groundwater at this site. Conversely, similar petroleum hydrocarbon concentrations have previously been reported in groundwater samples from MW-12 and adjacent Monitoring Wells MW-9 and MW-11. Additionally, "dry" Monitoring Wells MW-l, MW-2, and MW-11, all located within close proximity to MW-12, were reported as having strong petroleum odors when exposed to the atmosphere. Therefore, AGI concludes that the groundwater plume as currently mapped is as indicated in this report with the exception that the quantification of petroleum hydrocarbons in the central portion of the plume may be lower than are shown in this report. As previously mentioned, several of the original Monitoring Wells (MW-l, MW-2, and MW-12) installed .at the site are currently "dry" due to the present groundwater elevations. The wells are generally screened from 5 to 25 feet below ground surface and these wells are located in the area where the highest soil vapor concentrations were detected in the January, 1991 Soil Vapor Survey conducted by Delta Environmental Consultants. These wells are being considered for conversion to vapor extraction wells when site remediation begins. Finally, moderately high concentrations of volatile aromatics (BTEX) and TPH as gasoline were reported in the groundwater sample collected from monitoring well MW- 13. MW-13 is located approximately 500 feet downgradient (southeast) of the Davies site. At this distance downgradient it is unusual for concentrations of petroleum hydrocarbons to remain as high as the concentrations near the source of the plume. Therefore, it is possible that another source of groundwater contamination is present downgradient of the Davies site. 9.0 Recommendations After reviewing previous site history and the results of this monitoring event, .it is evident that remedial measures at the Davies site are necessary. AGI recommends a phased approach to this remediation. In general, the phases would occur as follows: Submit an Interim Remedial Action Plan to KCEHSD. Convert several of the existing "dry" monito.ring wells to vapor extraction wells. 8 · Install and Operate a "thermal oxidation" vapor extraction system. Continue monitoring groundwater to estimate potential beneficial effects of the soil vapor remediation. After reviewing the data generated in the pilot vapor extraction, expand vapor extraction system to full-scale remediation. 10.0 Limitations AGI preformed this investigation in accordance with generally accepted standards of care which exist in Central California at this time. It should be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of subsurface conditions present. No warranty, expressed or implied, is made. 9 Exhibits NORRIS ROAO SITE LOCATION ," I Scale North Ae. uaGeosciences. Inc, 1701 Westwind Drive Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax 328-1129 Davies Oil Company 3305 1/2 Gulf Street Bakersfield, California VICINITY MAP Exhibit 1 PIERCE ROAD ~ r~ - ~- · -- ~ -~ r Paddng . IVIW- 14 MW-13 I [ Rush Swoape Ar~a 'IJ~Mw-14A ' + I -- ~ns~ ~ ....... ~ ~ ~:~:~:~:5:~:]:~:~: · . ...... J I KemviHe S~ge .............................. ' ~ Stomge~a ~'s I ~n ~t Sc~e 1"= 125' I AquaGeoscieno~s, Inc. DAVIES OIL COMPANY EXH~ 70~ Westwind D~ve, Suite ~ 03 BAKERSFIELD, CALIFON~ Bakersfield, Oalifornia 9330~ T~l~phon~: (805) 3~8-0962 PLOT PLAN MAP Fax: (805) 3280~ I I I 377' ~PIERCE ROAD Area .............. ~,.,,~;~lW-l~, '377.70 ~ , I ~ R~h Swoa~ ~:.~.: : .-.~..-..::: :: '., -.-.*=-.-.-+:.:::.:.:.:.:~:.:+:.:.:,:.. ........... ~:.:. ~::::::::::::: +. :.:.: :..:::.:::::::: · ~ .~ ~., ..~ ~ ::: ::::..~,:.:.:::. ::::::::::::::::::::::::::::::::::: ~ ...................... ::: -: [ -:+:-:.:':'-..-~<., :.:.:.:..~. ::::::::::::::::::::::::::::::: :.:.:.:.:.:/.:.:.:.:.~.:.:.:.:.~.~;. :.~.~;...:;.~.~.~.L~.~. ~,...;;,,:-~......./:.:...:~ ~ :,:.:.:.:.:.:.:.:.:.:.:.:.:.:L:.:.:.:.:.:.. :.:~.~.., I ~':':::: ................. ~'"'":'" ~ ~: ......... ~v~WeB I .... :': ................. ~ ~ ::~ ~: ~ ~~ . ~ ~a~?:?~ ~ ~0 ................... ;:~:; ..................... ::: :-:-..:.:.:-:.- -:-:-:.:. · - .:. - --.'.-.: ........... ~ o~ge · :....:-:.:-.:-:.:.:-:..:.:.: : ................ - I ~ Nort~ · ~ Dk~tlon of Mferr~ flow Scale 1"= 125' / ~lt~tionGalle~ I I II AquaG~osd~neos, Inc. DAVIES OIL COMPANY EXH~ 70~ Wostwind Dfivo, Suito ~ 03 BAKERSFIELD, CALIFON~ Bak~rsfiold, Oaldomia 9330~ Groundwater Gra~ent Map 3 Tol~phona: (805) 328-096~ for ~ax: (8o5) aasol ;aa Septem~r 20, & 21, 1993 I I / III k No. 8X :::~li~::: ::::~:!:::: :i....~:~:::: , Sclc 1"= 125' I ~..~ ~ltntion AquaGeosdenoes, Inc. DAVIES OIL COMPANY EXH~ 1701 Westwind Drive, Suite 103 BAKERSHELD, CALIFON~ Bakersfield, California 93301 Telephone: (805) 328-0962 Groundwater impac~d wi~ ~Hg for Scptem~r 20 & 21, 1993 Fax: (805) 32801129 Tables September 1993 Quarterly Groundwater Well Monitoring Data 1993 Quarterly Gfoundwata~ Analytical Data MW-1 409.33 DRY MW-1 MW-lA 408.10 25.28 382.00 MW-lA ND MW-2 409.31 DRY MW-2 NA MW-3 410.22 MW-3 MW-4 409.72 DRY MW-4 MW-5 407.62 DRY MW-5 NA MW-8 409.68 MW-8 MW-9 409,60 NA MW-9 MW-10 408.12 MW-10 ND MW-11 409.43 MW-11 NA MW1 lA 407.58 NA~ NA MW1 lA NA MW-12 27.30 MW-12 MW-13 406.91 48.00i 29.21 MW-13 MW-14 408.63 NA MW-14 MW-14A 62.50 28.60 377.0 MW-14A ND MW-15 406.7g 48.50 27.65 379.14 MW-15 ND MW-16 407.5 47.5 23.38 384.12 MW-16 ND RW-1 410.34 27.6 RW-1 NA NA NA NA NA 1 8 1300 ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ND ND ND ND NA NA NA NA 620 1300 150000 ND 1 59 12000 N D NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA Corrected Groundwater Depth CDTW=DTW. (SP.G x LHT). CDTW = Corrected depth to water DTW = Measured depth to water gravity: unweathered gasoline = 0.75, diesel = 0.80 LHT = Measured li¢luid hydrocarbon thickness. NA = "Not Available" - well either dry or not found~ = Total Petroleum Hydrocarbons es gasoline = Total Petroleum Hydrocarbons es diesel ND = Below Practical Quanfitetion Umite Hist. Liquid Data 9/93 I TABLE 2 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA I I RW-1 1 1/2/88 410.34 23.91 385.99 0.25 1/13/89 20.82 389.12 0.2 3/1 3/89 21.15 388.93 0.01 7/2/89 27.69 382.65 7/31/89 28.55 381.79 8/24/89 29.64 380.7 9/7/89 29.1 381.24 1 0/25/89 30.22 380.12 1 1/8/89 30.71 379.63 1 2/8/89 30.5 379.84 1/4/90 31.55 378.79 2/7/90 31.65 378.69 2/1 9/90 30.31 380.03 5/31/90 33.1 377.24 CCOR 7/25/90 34.5 375.84 CC(DR 8/1 6/90 35.1 375.24 CI3:3R 1/11/91 DRY CRY 4/5/91 DRY CRY 6/15/91 CRY DRY MW-1 7/1 1/86 409.33 24.18 14.86 394.47 4" free prod. 5/8/87 18.23 391.1 0.5' 1 0/22/87 19.72 389.61 ,0.06' 1 2/3/87 20.66 388.67 0.8' 3/4/88 19.09 390.24 0.25' 5/2/88 21.24 388.09 0.2' 1 1/2/88 22.83 386.5 Strong Odor 1/13/89 19.93 389.38 3/1 4/89 20.22 389.11 6~26~89 CRY CRY 1 0/25/89 DRY DRY 1/4/90 DRY DRY 3/6/90 CRY CRY 1/11/91 CRY DRY 4/5/91 DRY DRY 6/15/91 DRY CRY 9/20/93 CRY DRY · STRONG ODOR I 9/20/93 I I t 25.28 I 382.82 Page 1 Hist, Liquid Data 9/93 I' TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA . MW-2 7/1 1/86 409,31 24,3 15.02 394,29 12/19/86 17,87 391,44 5/8/87 NA NA 1 0/22/87 19,35 389.96 NO PRODUCT 1 2/3/87 20,43 388,88 OI3CR 3/5/88 19,07 390,24 NO ODOR 5/2/88 20,7 388,61 SLIGHT ODOR 1 1/2/88 22,79 382,56 1/1 3/89 20,04 389,27 SLIGHT ODOR 3/1 3/89 20,45 388,86 6/26/89 CRY DRY 1 0/5/89 DRY CRY 3/6/90 DRY DRY 1/11/91 ERY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 ~ DRY DRY STRONG ODOi; MW-3 7/11/8 6 410.22 23.7 15.37 394.85 NO PRODUCT 5/8/87 18.34 391.88 1 0/22/87 20 390.22 SLIGHT ODOR ! 2/3/87 20.77 389.45 SLIGHT ODOR 3/5/88 19.42 390.8 DIESELODOR 5/2/88 21.1 389.12 SLIGHT OOOR 1 1/2/88 22.86 387.36 DIESEL ODOR 1/13/89 20.2 390.02 3/1 3/89 20.77 389.45 1 0/5/89 DRY DRY 1 1/9/89 DRY DRY 1/4/90 DRY CRY 2/7/90 CRY CRY 3/6/90 CRY CRY 1/11/91 CRY DRY 4/5/91 DRY DRY 6/1 5/91 DRY CRY 9/20/93 CRY CRY Page 2 Hist. Liquid Data 9/93 I TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-4 7/11/86 409.72 15.06 394.66 5/8/87 17.87 391.85 10/22/87 18.46 391.26 12/3/87 20.41 389.31 3/5/88 19.03 390.69 5/2/88 20.58 389.14 1 1/2/88 22.5 389.2 111 3/89 20.08 389.64 3/1 3/89 20.3 389.42 6~26~89 DRY DRY 10/5/89 DRY DRY 11/9/89 ERY DRY 1/4/90 DRY DRY 2/7/90 DRY CRY 3/6/90 IR? DRY 1/11/91 CRY DRY 4/5/91 DRY DRY 6/15/91 DRY CRY 9/20/93 DRY CRY MW-5 3/1 3/89 407.62 23.3 18.32 389.3 6/26/89 21.79 385.83 1 0/25/89 CRY DRY 9/21/93 CRY DRY Page 3 Hist. Liquid Data 9/93 { TABLE 2 I HISTORICAL GROUNDWATER MONITORING ................ : LIQUID LEVEL DATA MW-8 5/8/87 409.68 24.6 1 8 391.68 10/22/87 19.6 390.08 12/3/87 20.6 389.88 3/4/88 19.27 390.41 5~2~88 CRY DRY 11/2/88 CRY CRY 1/13/89 DRY CRY 3/1 3/89 20.7 388.98 6/26/89 DRY DRY 1 O/5/89 CRY DRY 11/9/89 DRY CRY 1/4/90 DRY DRY 2/7/90 CRY DRY 3/6/9O CRY DRY 1/11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 DRY DRY MW-9 5/8~87 406.6 15.37 391.23 1 0/22/87 17.38 389.22 1 2/3/87 18.12 388.48 3/4/88 16.7 389.9 5/2/88 18.26 388.34 I 1/2/88 DRY DRY 1/13/89 17.87 388.72 3/13/89 18.2 388.4 6/26/89 CRY CRY 1 O/5/89 DRY CRY 11/9/89 ~ CRY 1/4/90 DRY DRY 2/7/90 DRY DRY 3/6/90 DRY CRY 1/11/91 CRY CRY 4/5/91 CRY CRY 6/15/91 CRY DRY Page 4 Hist. Liquid Data 9/93 I TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-10 3/5/88 408.12 27 17.52 390.6 5/2/88 19.28 389.04 11/2/88 21 387.12 1/13/89 18.36 389.76 3/1 3/89 18.82 389.3 6/26/89 22.52 385.6 7/27/89 23.2 384.92 1 0/5/89 24.53 383.59 1/4/90 26.42 381.7 2/7/90 27.09 381.03 3/6/90 DRY DRY 1/11/91 DRY DRY 4/5/91 DRY CRY 6/15/91 CRY DRY 9/21/93 ............. I ...... ..2..4..:?...,..2.. .......... , .......... .,3.. ,8.. ,.3,...',,4,. ......... I ................................... MW-11 3/5/88 409.43 26.58 19.23 390.2 ~ODOF 5/2/08 20.78 388.65 NO PRODUCT 1 1/2/8 8 23.57 385.56 ,0.75' free pro, 1/1 3/89 20.62 388.81 ~0.5' 3/1 3/89 20.63 388.8 0.3' 6/26/89 24.37 385.06 0.01' 7/27/89 25.95 384.24 1.02' 1 0/5/89 DRY DRY $ I I-~I',tG OEX~ 1/4/90 DRY DRY S'TRONG OOO~ 2/7/90 CRY DRY SI I-.,IONG ~ 3/6/90 DRY DRY 1/11/91 DRY ERY 4/5/91 DRY' CRY 6/15/91 DRY DRY 9/20/93 CRY ............ ? ............ J,§..!..~.~ MW-11A 9/4/92 *407.58 34.8 372.78 Page 5 Hist. Liquid Data 9/93 I TABLE 2 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA !MW-12 3/5/88 408.67 27.3 18.62 390.05 STRONG ~ 5/2/88 20.16 388.51 SLIGHT~ 1 1/2/88 22.86 385.81 0.5' free prod 1/13/89 19.81 388.86 0.2' 3/1 3/89 20.02 388.65 0.1' 6/26/89 24.54 384.77 0.94' 7/27/89 25.39 384.05 1.02' 1 0/5/89 26.6 383.08 0.35' 1/4/90 DRY CRY STRCt',~ ~ 2/7/90 ERY CRY STRCNG OD(~ 3/6/90 DRY DRY 1/11/91 CRY DRY 4/5/91 CRY CRY 6/15/91 DRY DRY 9/21/93 26.83 381.84 MW-13 1/1 0/91 409.91 48 NA NA 4/5/91 CRY DRY 6/15/91 DRY DRY 9/4/92 40.94 368.97 9/20/93 29.21 380.7 MW-14 1/1 0/91 408.63 NA NA 4/5/91 DRY DRY 6/15/91 DRY DRY MW-14A 9/4/92 406.79 62.5 41.25 365.54 9/20/93 28.6 378.19 MW-15 1/1 0/91 409.78 48.5 NA NA 4/5/91 DRY DRY 6/15/91 CRY DRY 9/4/92 40.15 369.63 9/20/93 27.65 382.18 MW-16 9/4/92 410.52 32.28 378.24 9/21/93 23.38 387.14 Page 6 Hist. Analytical 9/93 I TABLE 3 H ISTCRICAL GROUNDWATER MON IT(DRING ANALYTICAL DATA MW-1 5/8/8 7 FLH FLH FLH FLH FLH FLH 10/22/87 FLH FLH FLH FLH FLH FLH 3/4/88 FLH FLH FLH FLH FLH FLH 3/14/89 FLH FU-I FLH FI.FI FIJI FLH 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL · 9/20/93 DRYWELL J DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL I 9/20/92 J ND ' J 7 J 1 S i 1300 ND iaw-2 7/11/86 400 310 ND 550 11000 NA 12/19/86 9 120 ND 330 930 NA 5/8/8 7 89 <0.5 <0.5 89 4100 < 1 10/22/87 5 22 <0.5 12 ND 13000 3/4/88 13 2 5 39 1300 ND 3/1 4/89 5 20 <10 20 4000 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/g0 DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL ........... .......... j, ..... ..... .... MW-3 7/11/86 43 110 NA 170 6100 ND 5/8/8 7 0,9 <0.5 <0,5 <0.5 354 6.2 10/22/87 <1 3 1 I 12000 ND 3/4/88 <0.1 <1 <1 <1 ND 29000 3/1 4/89 <0.2 <2 <2 <2 600 ND 10/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/g 1 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WEE. DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRY WELL DRY WELL DRY WI=-LL DRYWELL DRY WELL DRY WELL FLH = Floatin~ Liquid Hydrocarbons NS = Not Sampled NA = Not Analyzed ND = Below the indicated detection limit as labeled in the analytical Laboratory reports. Page 1 Hist. Analytical 9/93 I TABLE 3 { HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-4 7/11/86 ND ND NA ND ND NA 5/8/87 1.8 7.6 <0.5 5.2 22 <1 10/22/87 0.1 <1 <1 <1 <50 ND 3/4/88 <0.1 <1 <1 <1 <50 ND 3/1 4/89 <0.2 <2 <2 <2 <50 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRYWEII DRYWELL DRY WELL DRYWELL DRYWELL DRY WELL MW-8 5/8/87 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 10/22/87 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 3/4/88 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 3/1 4/89 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 10/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/9.0 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WEE. DRY WELL DRY W1=I:L DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WI=I I DRY WELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL MW-9 5/8/87 1155 3810 1740 15380 33400 <1 1 0/22/87 1 0 1600 2200 37000 170000 ND 3/4/88 40 1100 3600 28000 70000 ND 3/14/89 31 120 2200 11000 56000 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/go DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20~93 NA NA NA NA NA NA FLH = Floating Liquid Hydrocarbons NA = Not Analyzed I NS = Not Sampled ND = Below the indicated detection limit as labeled in the anal~ftical Laboratory reports. P~e2 Hist. Analytical 9/93 I TABLE 31 ANALYTICAL DATA iMW-10 3/4/88 2.2 <1 <1 2 <50 ND 3/14/89 <0.2 <2 <2 <2 <50 ND 10/5/89 <0.2 <2 <2 <2 <50 ND 3/1/g0 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/g 1 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 ND ND .............. .N..D ....................... ,N.,.D, ...... 1 ............ .N_D. ............................. ,.,N..,..D.. ............ MW-11 3/4/88 10000 89000 3200 37000 240000 ND 3/1 4/89 FLH FLH R.H FLH FLH FIJI 10/5/89 Ft.H FLH FLH FLH FLH FLH 3/1/90 DRY WELL DRY'WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRYWELL DRY WELL DRYWELL DRYWELL DRYWELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL g/20/93 DRYWELL DRY WELL DRY WELL DRYWELL DRYWELL DRYWELL MW-12 3~4/88 600 4200 3700 42000 100000 ND 3/14/89 FLH FLH FLH FLH FIJI FLH 10/5/89 FLH FLH FLH FLH FLH FLH 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 230 2800 620 1300 150000 ND MW-13 1/11/91 2 1.2 1.2 0.8 <50 <50 4/5/91 DRY WELL DRY WELL DRY WELL DRY WEM_ DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/15/92 ND ND NA ND NA NA 9/20/93 5 12 1 59 12000 ND NA = Not Analyzed NS = Not Sampled ND = Below the indicated detection limit as labeled in the analytical Laboratory reports. FLH = Flcatln~l Liquid Hydrocarbons I I P~e3 Hist. Analytical 9/93 I TABLE 3 { HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA iil ili iilllll iii iil i ~ii i Iii iiiii~iiii ~~?~~?~i ............... · lMW-14 1/11/91 30 3.6 42 32 11 00 <50 4/5/91 DRY WELL DRYwEI I DRY WELL DRY WELL DRY WELL DRY WELL ..................................................................... ,?...!..!......s../..~..~ ....................... ...D....~..~.~--~ ................ ..D.~..~.~...i.~ ....~.Y...~.... !....._~..Y..~....I ....?.....Y....~.~ DRY WELL I 9/20/93 I ND ND I ND [ ND - ND I ND MW-15 1/11/91 1.5 1.1 1 0.5 <50 <50 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/15/92 ND ND NA ND NA NA 9120193 ND ND ND ND ND ND MW-16 1/11/91 <0.1 <0.5 <0.5 <0.5 <50 <50 4/5/91 NA NA NA NA NA NA 6/15/91 NA NA NA NA NA NA 9/15/92 ND ND NA ND NA NA 9~20~93 ND ND ND ND ND ND NA = Not Analzed NS = Not Sampled ND = Below'the indicated detection limit as labeled in the anaJytical Laborator~ reports. P~e4. Appendix A Groundwater Purge Data Sheets AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c~o,.,,,a,,,~,~,,~, · ~~co.~ AND WELL DEVELOPMENT DATA 1701 W~d ~ve,~lOl · ~d,~om~ 9~1 SAMPLE ID OR WELL NO.: MW-lA PROJECT NO.:' PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 21~ 1993 SAMPLED BY: PATRICK MCCUI I OUGH DEPTH TO WATER: 25.28' TOTAL DEPTH OF WELL: 61.s' WELL DIAMETER: 4" CASING VOLUME: 23.64 ~lallons METHOD OF PURGING: KV Purge Pump INTAKE DEPTH 26' 26' 26' 26' 26' 34' 34' 35' 35' SEC SAMPLE pH (pmhos/ CONTROL CUM. VOL. WELL (UNITS) cm) NO. (GAL) PUMPED 5 0.211 7.6 266 10 0.42 7.6 273 15 0.63 7.5 271 20 0.84 7.5 277 25 1.05 7.4 281 30 1.26 7.5 283 35 1.48 7.5 275 40 1.69 7.5 275 45 1,90 7.5 274 50 2.11 276 55 2.32 271 60 2.53 265 36.4 2.74 7.6 271 36.4' 70 2.96 7.6 273 36.4' 75 3.17 7.6' 272 REMARKS (COLOR, TURBIDflTY, ETC.) LT. STRAW COLOR-STR.SEWER ODOR LT. STRAW COLOR-STR.SEWER ODOR GREY COLOR-STR. SEWER ODOR GREY COLOR-STR. SEWER ODOR GREY COLOR-STR. SEWER ODOR COLOR W/BLACK PARTICLES COLOR W/8LACK PARTICLES GREY COLOR - STR. SEWER SMELL i GREY COLOR - STR. SEWER SMELL GREY COLOR - STR. SEWER SMELL GREY COLOR - STR. SEWER SMELL GREY COLOR - SIR. SEWER SMELL GREY COLOR - STR. SEWER SMELL GREY COLOR - STR. SEWER SMELL GREY COLOR - STR. SEWER SMELL pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 36' FT. FINAL DEPTH. TO WATER 35.48' FT. 3 CASING VOLUMES = 70.9 GALS. NOTES: ^" '~ :~Hua,~eosc,ences,Inc. WATER QUALITY SAMPLING RECORD G.o~a.~.~Sde.,.~ · ~...~o.~.~Co.~.~. AND WELL DEVELOPMENT DATA 1701We~tw~d Drive, Suile 101 · Bake~J~i~d, CaJ~or~ta 93301 SAMPLE ID OR WELL NO.: MW-1 DEPTH TO WATER: Dry PROJECT NO.: TOTAL DEPTH OF WELL: PROJECT NAME: DAVIES OIL CO. WELL DIAMETER: 2" DATE: SEPTEMBER 20r 1993 CASING VOLUME: SAMPLED BY: PATRICK MCCULLOUGH METHOD OF PURGING: 24.18' SEC SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. WELL (UNITS) cra) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED .pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT __ FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: DRY WELL - SOIL STUCK TO LEVEL INDICATOR HAD STRONG PETROLEUM ODOR GALS. ^'- ~ :~tua~.,eosc,ences,Inc. WATER QUALITY SAMPLING RECORD G,o~d,.~.S~e.m~ · E.~o.=e.~ Co.~.~, AND WELL DEVELOPMENT DATA 1701 Westw~md Drive, Suite 101 · Bakem.qeld, Ca]iA)mia 93301 SAMPLE ID OR WELL NO.: MW-;? DEPTH TO WATER: Dry PRO,JECT NO.: TOTAL DEPTH OF WELL: 24.3' PRO,JECT NAME: DAVIES O~L CO. WELL DIAMETER: DATE: SEPTEMBER 20~ 1993 . CASING VOLUME: SAMPLED BY: PATRICK MCCULLOUGH METHOD OF PURGING: SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED · pH CALIBRATION / STANDARDIZATION I BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ 2 5° C TEMP °C INSTRUMENT READING I 74 I 718 SAMPLED AT FT. FINAL DEPTH TO WATER 1413 I6868 J 586401 FT. 3 CASING VOLUMES = NOTES: DRY WELL - STRONG PETROLEUM ODOR IN HOLE GALS. ^.. r-, : qua eo$c,e tce$, Inc. WATERQUALITY SAMPLING RECORD ~d~e.~ ' ~v~onmen~ Cons~tan~ AND WELL DEVELOPMENT DATA 1~1 W~d ~ve, ~ 101 * B~ersfield, ~ornia 9~01 SAMPLE ID OR WELL NO.: Mw-3 DEPTH TO WATER: D~ PROJE~ NO.: TOTAL DEPTH OF WELL: ~3.7' PROJE~ NAME: DAVIES O~L CO. WELL DIAM~ER: DATE: SE~EMBER 21, 1993 CASING VOLUME: METHOD OF PURGING: SAMPLED BY: PATRICK MCCULLOUGH SEC SAMPLE, REMARKS pH (pmhos/ CONTROL INTAKE CUM. WELL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED .pH CALIBRATION / STANDARDIZATION TEMP 'C - INSTRUMENT READING ,, SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: DRY WELL GALS. ^-- '~ :~qua~eosc,ences,Inc. WATER QUALITY SAMPLING RECORD o~a,,~,sd~.~,~, · ~.o=~.mco~,au.m AND WELL DEVELOPMENT DATA 1~1 W~d ~ve, ~ 101 · ~d,~om~ ~1 SAMPLE ID OR WELL NO.: MW-4 DEPTH TO WATER: D~ PROJE~ NO.: TOTAL DEPTH OF WELL: 23.6' PROJE~ NAME: DAVIES OIL CO. WELL DIAM~ER: 2" DATE: SE~EMBER 20~ ~993 CASING VOLUME: SAMPLED BY: PATRICK ~CCU~OUGH ~HOD OF PURGING: SEC SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) (GAL) PUMPED cm) NO. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT 'READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: WELL IS DRY GALS:' *'- -' clua,oeosctences, Inc. WATERQUALITY SAMPLING RECORD c.~,,~,d,,,,,~ ~,,t~t, · ~~ co~,~ AND WELL DEVELOPMENT DATA 1~1 W~d ~ve, ~ 101 · ~d, ~om~ 9~1 SAMPLE ID OR WELL NO.: MW-5 DEPTH TO WATER: O~ PROJE~ NO.: TOTAL DEPTH OF WELL: 23.3' PROJE~ NAME: DAVIES O~L CO. WELL DIAM~ER: 4" DATE: SE~EMBER 21 ~ 1993 CASING VOLUME: SAMPLED BY: PATRICK MCCULLOUGH M~HOD OF PURGING: SEC SAMPLE REMARKS pH ~mhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED .pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT __ FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES NOTES: DRY WELL NO LOCKING cAp GALS. A(tuaGeo$cie ce$, Inc. WATER QUALITY SAMPLING RECORD Cro~d,~sd~,~ · ~,~, co~.~ AND WELL DEVELOPMENT DATA 1701 W~d ~ve, ~ 101 · ~d, cMIfom~ ~1 ;AMPLE ID OR WELL NO.: MW-8 PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 20~ 1993 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: 24.6' CUM. VOL, WELL DEPTH (GAL) PUMPED SEC SAMPLE pH (j.~mh os/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) .pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT, FINAL DEPTH TO WATER FT. 3 CASING VOLUMES NOTES: WELL IS DRY GALS. AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c,,~,.a~,.~s~,~ · ~~ c~ AND WELL DEVELOPMENT DATA 1~1 W~d ~ve, ~ 101 · ~d, ~ 9~1 SAMPLE ID OR WELL NO.: MW-10 PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 21 ~ 1993 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 24.72' TOTAL DEPTH OF WELL: 27' WELL DIAMETER: 2" CASING VOLUME: 0.37 gallons METHOD OF PURGING: KV Purge Pump CUM. WELL (GAL) PUMPED pH (UNITS) SEC SAMPLE REMARKS (#mhos! CONTROL cm) NO. (COLOR, TURBIDITY, ETC.) 0.25 0.67 7.5 386 0.50 1.35 7.5 408 LT. STRAW COLOR - NO ODOR LT. STRAW COLOR - NO ODOR LT. STRAW COLOR - NO ODOR LT. STRAW COLOR - NO LT. STRAW COLOR - NO LT. STRAW COLOR - NO 0.75 2.02 7.5 399 1 2.7 7.5 397 1.25 3.37 7,4 391 1.50 4.05 7,4 389 MW-10 pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01JpH 7.0 pH 10.0 J TEMP °C I I INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT Z6' FT. FINAL DEPTH TO WATER 25.15' FT. 3 CASING VOLUMES = 1.11 NOTES: GALS. ^~' '~ :~tua,.~eosc,ences,Inc. WATER QUALITY SAMPLING RECORD c~o~a,~ s~.~, · ~~ co~ AND WELL D~ELOPMENT DATA 1~1 W~d ~ve, ~ 101 * ~d, ~om~ 9~1 SAMPLE ID OR WELL NO.: MW-11 DEPTH TO WATER: D~ PROJE~ NO.: TOTAL DEPTH OF WELL: PROJE~ NAME: DAVIES O~L CO. WELL DIAM~ER: DATE: SE~EMBER 20~ 1993 CASING VOLUME: SAMPLED BY: PATRICK ~CCULLOUGH M~HOD OF PURGING: 26.58' SEC S~4Pt. E REMARKS pH (pmhos/ CONTROL CUM. VOl WELL (UNITS) cm) NO. (COLOR, TURBIDrT'f, ETC.) (GAL) PUMPED pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: NOTE: DRY WELL - VERY STRONG PETROLEUM ODOR IN HOLE GALS. Ac[uaGeoscience$, Inc. WATER QUALITY SAMPLING RECORD c~d,~,~,s~,,~,~ · E~,~~C.,~ AND WELL DEVELOPMENT DATA 1701 W~twt~d Drive, ~ 101 · ~d, ~om~ 9~1 SAMPLE ID OR WELL NO.: MW-12 PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 21 ~ 1993 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: z6.83' TOTAL DEPTH OF WELL: z7.3' WELL DIAMETER: 2" CASING VOLUME: 0.07 ~allons METHOD OF PURGING: Bailer Pump CUM. WELL (GAL) PUMPED 0.5 27' 1 27' 1.5 27' 2 27' 2.5 27' 3 pH (UNITS) SEC SAMPLE (#mhos/ CONTROL cm) NO. 7.3 433 7.3 440 7.3 410 7.3 406 7.3 404 7.3 400 MW-1 2 REMARKS (COLOR, TURBIDITY, ETC.) STRONG PETROLEUM ODOR DIRTY BROWN-SHEEN ON TOP STRONG PETROLEUM ODOR DIRTY BROWN-SHEEN ON TOP STRONG PETROLEUM ODOR DIRTY BROWN-SHEEN ON TOP STRONG PETI,I,ROLEUM ODOR DIRTY BROWN-SHEEN ON TOP STRONG PETROLEUM ODOR DIRTY BROWN-SHEEN ON TOP STRONG PETROLEUM ODOR DIRTY BROWN-SHEEN ON TOP pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION/JMHOS / CM ~ 25' C J 74 718 TEMP °C I INSTRUME,NT READING I SAMPLED AT 27' FT. FINAL DEPTH TO WATER 1413 FT. 3 CASING VOLUMES = 0.23 GALS. NOTES: -AquaGeo$cie ce$, I c. WATER QUALITY SAMPLING RECORD C,o,,,dwa~, S~,,~L~ · ~.,~.~ Co,~,,~, AN D WELL DEVELOPMENT DATA 1701 Westwind Drive, SuJ~ 101 · Bakemfield, California 93301 SAMPLE ID OR. WELL NO.: MW-13 PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 20~ 1993 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 29.21' TOTAL DEPTH OF WELL: 48.0' WELL DIAMETER: 4" CASING VOLUME: 12.26 ~lallons METHOD OF PURGING: KY Purge Pump INTAKE DEPTH 30' 30' CUM. VOL. (GAL) PUMPED SEC SAMPLE REMARKS pH (prnhos/ CONTROL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) 30' 5 0.40 10 0.81 15 1.22 8.0 344 8.0 332 LT. STRAW COLOR - SLT. PETR. ODOR LT. STRAW COLOR SLT. PETROLEUM ODOR CLEAR-SLT. PETR. ODOR CLEAR-SLT./MOD. PETR. ODOR CLEAR-SLT. PETR. ODOR CLEAR - VERY SLT. ODOR CLEAR - VERY SLT. ODOR CLEAR - VERY SLT. ODOR 20 1.6 7.8 321 7.8 331 25 2.03 7.8 334 30 2.44 7.7 335 30' 35 2.85 7.7 334 30 40 3.26 7.7 339 MW-13 pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT · 30' . FT. FINAL DEFTH TO WATER 29.24' FT. 3 CASING VOLUMES = 36.7 GALS. NOTES: AquaGeoscienCes, Inc. WATER QUALITY SAMPLING RECORD Gtoundwater S(:ientis~ · Environmental Consttltants AND WELL DEVELOPMENT DATA 1701 Weetwind Drive, Suite 101 · Bakersfield, California 93301 SAMPLE ID OR WELL NO.: ~4W-14A PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 20, 1993 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 28.60' TOTAL DEPTH OF WELL: 62.5' WELL DIAMETER: 4" CASING VOLUME: 22.1 z ~lallons METHOD OF PURGING: KV Purge Pump ARACTERISTICS INTAKE CUM. VOL WELL VOl DEPTH ((3AL) PUMPED 29' 5 0.22 29' 29' 29' 29' 29' 10 0.45 1 5 0.68 20 0.90 25 1.13 30 1.36 35 1.58 40 1.80 45 2.03 50 2.26 55 2.48 60 2.71 65 2.93 70 3.16 pH (uNrrs) SEC SAMPLE ~mhos/ CONTROL cm) NO. 8.6 350 8.0 321 8.0 321 8.0 337 7.9 318 7.9 320 7.7 327 7.4 322 7.4 332 7.4 330 REMARKS (COLOR, TURBIDITY, ETC.) CLEAR - NO ODOR DIRTY STRAW COLOR - NO ODOR STRAW COLOR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR 7.4 330 CLEAR - NO ODOR 7.4 326 7.4 325 7.4 325 CLEAR- NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR MW-14A .pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 TEMP °C INSTRUMENT READ!NG , ,, SPECIFIC ELECTRICAL CONDUCTANCE- CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING , SAMPLED AT ___2_9'___ FT. FINAL DEPTH TO WATER 28.6Z' J 68681 58640 I FT. 3 CASING VOLUMES = 66.38 NOTES: GALS. AquaGeosciences Inc [ ,, E~vL, x~m~emal Cot~sultants 1701 Westwind Drive, Suite 101 · Bakemtteld, Calffomt~ g9301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-15 PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 20~ 1993 , SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 27.65' TOTAL DEPTH OF WELL: 48.5' WELL DIAMETER: 4" CASING VOLUME: 13.6 ~lallons METHOD OF PURGING: KY Purge Pump CUM. VOL, WELL (GAL) PUMPED SEC SAMPLE pH (~mhos/ CONTROL (UNITS) cm) NO. 7.5 359 REMARKS (COLOR, TURBIDITY, ETC.) CLEAR-SLT'Y. MURKY- NO ODOR LT. STRAW COLOR - NO ODOR CLEAR TO SLIGHTLY CLOUDY NO ODOR CLEAR * NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR 28' 5 0.36 28' 10 0.73 28' 15 1.10 28' 20 1.47 28' 25 1.83 7.6 342 7.6 327 7.8 335 7.7 338 7.8 348 7.7 354 7.7 357 MW-15 30 2.2 35 2.57 40 2.94 pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4..01 pH 7.0 ,pH 10.0 TEMP °C , INSTRUMENT READING , i SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCLSOLUTIONi~MHOS/CM~25°C' 74 718 , 1413 TEMP °C INSTRUMENT READING SAMPLED AT 28' FT. FINAL DEPTH TO WATER 27.65' 686S I S8640I FT. 3 CASING VOLUMES = 40.8 NOTES: GALS. AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD Grotmdwater Scientists · EnvLronmental Consultants AN D WELL DEVELOPMENT DATA 1701 Westwlnd Drive, Suite 10! · Bakersfield, California 93301 SAMPLE ID OR WELL NO.: MW-16 PROJECT NO.: PROJECT NAME: DAVIES OIL CO. DATE: SEPTEMBER 21, 1993 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 23.38' TOTAL DEPTH OF WELL: 47.5' WELL DIAMETER: 4" CASING VOLUME: 15.74 ~,allons METHOD OF PURGING: KV Purge Pump INTAKE cum. VOL. WELL VOl. DEPTH (GAL) PUMPED SEC SAMPLE pH (pmhos/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) CLEAR - NO ODOR SLIGHTLY CLOUDY - NO ODOR SLIGHT GREY COLOR - NO 7.4 417 SLIGHT GREY COLOR - NO 7.4 420 SLIGHT GREY COLOR - NO 7.4 418 CLEAR - NO ODOR 24' 5 0.31 7.6 370 10 0.63 7.5 380 1 5 0.95 7.4 402 20 1.27 25 1.58 24' 30 1.9 24' 35 2.22 7.4 423 24' 40 2.54 7.4 417 24' 45 2.85 7.4 404 24' 50 3.17 7.4 415 MW-16 CLEAR - NO ODOR CLEAR - NO ODOR CLEAR - NO ODOR ,pH CALIBRATION / STANDARDIZATION TEMP °C ,, INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING , SAMPLED AT 24' FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = 47.2 GALS. NOTES: Appendix B Chain of Custody and Analytical Results S~l'rlt-E~t~.v COr~PANV CHAIN OF CUSTOL aND I The FullSe,¥ice Independent resling ~,ralo~. ~labl~hed 19~ - ANALYSIS REQUEST 781Eas~Washington~ulevard · ~sAngeles, California 90021 · (213)749-3411 · Fax:(213)745-6372 DATE: PAGE -OF P.O. ~x 880550, Humer's Poim Shipyard Bldg. 114 · San Franci~o, California 94t88 · (415) 330-3000 · Fax: (415) 822-58~ 5427 East La Palina Avenue · Anaheim, California 92807 · (714) 693-1026 · Fax:(714) 693-1034 FILE NO. ~B NO. CLIENT NAME: ~ ~e~. ~ ~ ~ ~ · ~ ANALYSES REQUESTS: REMARKS: PROaEC , ME: 0 ,'/ PROJECT"O. P.O. NO. ~DDSESS: ~ k PROJECTUANAGER: ~ ~ ~/~.r~ PHONEg: ~ ~-OPgz F~:d& ~-//~ ~ (PrintS) (SignOre) ~ TAT {Anal~ical Turn Around Time) 0 = Same Day; 1 = 24 Houq 2 = ~'Hou~ (Etc.) ~ CONTAINER ~PES: B = Brass, G = Glass, P = Plastic, V = V0a Vial, 0 = ~er: ~ ~ SAMPLE DATE ~ TIME MATRIX C0~AIN~ ~ o ~ ~ SAMPLE CONDITIO~ NO. SAMPLED[ SAMPLED SAMPLE DESCRIPTION wsx~ ~ ~u~ om~ TAT ' ~ COMM~S: / iRehnq~e. By: IS,~na~m an. Pdnle0 Name) __ /~ R.ceiv~ By: {Signature ~¢Print~e) ~ _ Dale: Time: __ ld~ SAMPLE DISPOSITION: ~7~ ~ ¢~~ ~¢ X--,,, ~ ~ '(,/~w~ /~~ ~,~,~ ~ 1. Samples retum~ ,o client? YES Reli~uish~ By: (Signalum and Pfin~ed Name' R~eiv~ By: (Signa~e a~ Pr(need ~e) ~ Date: ~me: 2. Samples not be stored over 30 days. unless Relinqui~ By: [Signature and Print~ Namel R~e~ By: (Signature ~d Prin~ N~e) Date: T~e: . additional storage time is requesled. 3. Storage time requested: days SPECIAL INSTRUCTIONS: By Date DiSTRIRt)TIC~N' WHITF. YFI I ~W PIIql~' TO .qF:("r~ ~r~, n ~. ~., ,,-.,-. Certified by the St~ of Cali~rnia Deportment of Health 1701 Westwind Dr'. SulM 103 B.ukei*sfleid, CA 93301 Pt'x) ne: 80E,-32,8-09~2, F'a ×: 80..~-328-1120 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick MCCullough Sample: MW-lA Matrix: Water Analyst: MCM Lab #: 93A201 Date of sampling: Sept 21, 1993 ~ 10:52 am. Date of analysis: Sept 23, 1993 Date of Report: Sept 24, 1993 Compound Concentration Units P~,L* Benzene ND lag/L (ppb) 1. Toluene 7. lag/L (ppb) 1. Ethylbenzene 1. lag/L (ppb) 1. ,X~'lenes , 8. , lag/L (ppb) 1. TPH gasoline 1300. lag/L (ppb) 100. TPH diesel ND ~tg~tL (ppb) 100. *PQL = Practical Quantitafion Limit Rafael Espinosa Lel~, Ph.D. Laboratory Director. Cer~fied by ~he 5~e of Califi~rnia De~ort. men~ of Health Senates LaD~ra~ # l?01 Westwind DF. Suite 103 BfukeFsfield, CA 93301 Pt3Ol3~: 805-328-0962, Fa~ 805-328-1129 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageoseienees 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough SAmple: MW-10 Matrix: Water Analyst: MCM Lab #: 93A203 Date of sampling: Sept 20, 1993 ~ 12:48 pm. Date of analysis: Sept 24, 1993 Date of Report: Sept 24, 1993 Compound Concentration I'II Units PQL* Benzene ND gg/L (ppb) .3 Toluene ND gg/L (ppb) .3 Ethylbenzene ND gg/L (ppb) .3 Xylenes I ND I ~(ppb) .3 TPH gasoline ND lag/L (ppb) 50. TPH diesel ND ~g/L (ppb) 50. *PQL = Practical Quantitation Limit Rafael Esp/nosa Lerliz, Ph.D. Laboratory Director. Certified by the Store of California O~l~c~rtment of Heolth Ser~ces LaD~rof~r~ # 19~q~ 1701 Westwind Dr. Suite 103 ILukersfield, CA 93301 Pho~: 80.~-328<)9~2, fa~ 80.~-328-1120 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageos¢iences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick MeCullough Sample: MW-12 Matrix: Water Analyst: MCM Lab #: 93A202 Date of sampling:. Sept 21, 1993 ~ 11:52 am. Date of analysis: Sept 24, 1993 Date of Report: Sept 24, 1993 Compound Concentration Units PQL,* Benzene 230. ~g/L (ppb) 50. Toluene 2800. I~g/L (ppb) 50. Ethylbenzene 620. ~g/L (ppb) 50. Xylenes I 1300. I~/L (ppb) 50. TPH gasoline 150000. gg/L (ppb) 5000. TPH diesel ND [tg/L (ppb) 100. *PQL = Practical Quantitafion Limit Rafael Espinosa Leniz, Ph.D. Laboratory Director. CeWfied by We Sl~t~ of Calif~rnio Deoartmenl; of Health Se~ces Lat~raf~r~ # I~(~ 170I We~wind Dr. S~ I03 Bnker~ield, CA 93301 Phol3e: 805-328-0~2, Fax: 805-328-1120 Report of Analyll= Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap 'Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick MCCullough Sample: MW- 15 Matrix: Water Analyst: MCM Lab #: 93A199 Date of sampling: Sept 20, 1993 ~ 15:32 pm. Date of analysis: Sept 23, 1993 Date of Report: Sept 24, 1993 Compound Concentration. Units , ,, PQL* Benzene ND gg/L (ppb) .3 Toluene ND lag& (ppb) .3 Ethylbenzene ND lag/L (ppb) .3 X¥1ene.s , ND ,_F~/L (ppb) .3 TPH gasoline ND lag/L (ppb) 50. TPH diesel ND gg/L (ppb), 50. *PQL = Practical Quantitation Limit Rafael Espinosa ' , Ph.D. Laboratory Director. Cer~fied by the $~o~ of Colifornio D~cx~r~ment of Heal~ Services La~raC~r~ # 1701 Westwind Dr. Suite 103 Bnkersfield, CA 93301 Report of flnalysb Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageoscienees 1701 Westwind Dr. Suite I01 Bakersfield, CA 93301 Contact person: Patrick MeCullough Sample: MW-16 Matrix: Water Analyst: MCM Lab #: 93A204 Date of sampling: Sept 20, 1993 ~ 13:46 pm. Date of analysis: Sept 24, 1993 Date of Report: Sept 24, 1993 Compound Concentration Units PQL * Benzene ND lag/L (ppb) .3 Toluene ND lxg/L (ppb) .3 Ethylbenzene ND l~g/L (ppb) .3 Xylen~ ND Pg/L ~pb) .3 TPH gasoline ND gg/L (ppb) 50. TPH diesel ND [tg/L (ppb) 50. *PQL = Practical Quantitafion Limit Rafa~~Ph D Laboratory Director. Groundwater Scientists ° Environmental Consultants March 1994 Groundwater Quarterly Monitorina Re.port Davies Oil 3305 1/2 Gulf Street Bakersfield, California Presented To: Bill Davies Davies Oil and Ms. Dolores Gough Kern County Environmental Health Services Department Presented By: AquaGeosciences, Inc. April, 1994 Patrick McCullough Staff Geologist Registration Expires 6/30/94 '..-- 170t Westwind Drive, Suite tOt ° Bakersfield, California 9330t (805) 3280962 ° FAX (805) 328-1129 TABLE OF CONTENTS ,.gECTION~ 1.0 2.0 3.0 4.0 4.1 4.2 4.3 4.4 5.0 6.0 7.0 8.0 9.0 10.0 INTRODUCTION FACILITY DESCRIPTION PROJECT HISTORY GROUNDWATER MONITORING Groundwater Elevation Groundwater Monitoring Well Purging Groundwater Sample Collection Analytical Results DISCUSSION OF ANALYTICAL RESULTS SITE GEOLOGY SITE HYDROGEOLOGY CONCLUSIONS RECOMMENDATIONS LIMITATIONS Page # 2 2 2 3 4 4 4 4 6 6 6 8 8 9 Exhibit 1 Exhibit 2 'Exhibit 3 Exhibit 4 Exhibit 5 Exhibit 6 Vicinity Map Plot Plan Map December 1993 Groundwater Gradient Map March 1994 Groundwater Gradient Map December 1993 Groundwater-TPHg Concentration Contour Map March 1993 Groundwater-TPHg Concentration Contour Map March 1994 Groundwater Monitoring - Liquid Level and Analytical Data Historical Groundwater Monitoring - Liquid Level Data Historical Groundwater Monitoring - Analytical Data Appendix A Groundwater Purge Data Sheets Appendix B Chain of Custody and Analytical Results 1.0 Introduction This report presents the results of the March 1994 Quarterly Groundwater Monitoring performed by AquaGeosciences, Inc. (AGI) at the Davies Oil Company at 3305 1/2 Gulf Street, Bakersfield, California. On March 29 through April 1, 1994 depth to water measurements were collected from wells on and around the site. The wells were then purged and sampled for chemical analyses. 2.0 Facility Description Davies Oil is located at 3305 1/2 Gulf Street in the City of Bakersfield, Kern County, California (Exhibit 1). The site is currently operated as a gasoline and diesel dispensing service station and contains two gasoline and four diesel dispenser islands, along with an office complex. The site is surrounded by commercial operations and residential property. The facility is shown to scale on Exhibit 2. 3.0 Pro!ect History During the winter of 1985, inventory records first detected product losses from the regular-gasoline dispensing system. In response to these losses, a pressure test was conducted on the tank and lines which indicated a leak in the regular-gasoline product lines. The suspect faulty line was repaired, but shortly thereafter, inventory records again indicated product losses. The tanks and lines were tested again on March 3, 1986 where a leak in the vapor lines was detected then subsequently repaired. On July 1987, Twin Cities Testing Corporation estimated 2,500 gallons of regular-gasoline may have been lost on site. Shortly thereafter, Davies Oil contacted KCEHSD and · apprised them of the situation. In October 1986, three (3) 10,000 gallon underground storage tanks were removed from the Davies facility 'because they were no longer in use. According to the KCEHSD, diesel fuel was detected in soil samples obtained during the excavation. Information generated by several prior consultants including Delta Environmental Consultants, Inc., Aegis Environmental, Inc., and Associated Soil Analysis, Inc. revealed the presence of both soil and groundwater contamination by gasoline range hydrocarbons at the subject site. A total of seventeen (17) groundwater monitoring wells, (nine (9) two inch and eight (8) four inch diameter) have been installed on-site. Additionally, there are two groundwater recovery wells, one 12-inch and one 6-inch diameter, designated as RW-1 and MW-12a. A groundwater treatment system was installed that consisted of a packed column air stripper for dissolved phase hydrocarbon removal and two carbon filters in line at the effluent port prior to discharge to an on-site infiltration gallery. During installation and operation of the treatment system in 1988 and 1989, the water table was relatively stable between 18 2 and 22 feet below ground surface (bgs). In February of 1990, the water table dropped below the bottom of the groundwater recovery well at 36 feet bgs due to regional drought conditions, rendering the remediation equipment temporarily inoperative. In November of 1988, hydraulic conductivity tests were performed by Delta Environmental Consultants, Inc. This test was pedormed on RW-1 using a short duration pump test. Transmissivity was estimated to be 12,000 gpd/ft and hydraulic conductivity was calculated at 70 ft/day. A maximum plume extent was then calculated and was estimated at 1100 ft down gradient and was later confirmed by down gradient monitoring wells MW-13 and MW-14a. A soil vapor survey was conducted in November 1990 to establish the limits of hydrocarbon vapors in the soil. In January 1991, three (3) 4-inch diameter monitoring wells were installed down gradient of the plume (MW-13, MW-14, and MW-15) and one 4-inch well upgradient (MW-16) at the northern boundary of the property. Well depths ranged from 48.5 feet to 55.0 feet bgs. Groundwater analyses revealed benzene contamination above State Action Levels (SAL) in down gradient wells MW- 13, MW-14, and MW-15. Upgradient well MW-16 showed non-detect (ND) results for all analytes. MW-14 however, exhibited the highest levels of dissolved hydrocarbons due to its central position down gradient of the gasoline plume. All four groundwater monitoring wells became dry in Apdl 1991 due to a continuing decline of the water table. The deepest well was MW-13, completed to a depth of 55 feet bgs. In March 1992, four of the groundwater monitoring wells were twinned with deeper wells screened from 30 to 60 feet bgs to accommodate the declining water table. The new wells were designated MW-la, MW-11a, MW-12a, and MW-14a. All wells were completed with 4-inch Schedule 40 PVC casing and liner, except for MW-12a, which was completed with 6-inch diameter PVC casing. A pump test was conducted on MW- 12A before plumbing it to the air stripper tower on-site. The groundwater remediation unit was apparently re-started in fall 1992, but due to Iow flow rates, high drawdown, and a continuing decline in the water table, was shut down once again a few months later near the end of 1992. The project has apparently been idle since that time. In September 1993, AGI was retained by Federated Insurance to begin quarterly groundwater monitoring, develop and implement a Remedial Action Plan. On April 4, 1994 the KCEHSD approved the Remedial Action Plan submitted by AGI. Remediation of the Davies Oil.site will include vapor extraction and air sparging in wells located in the center of the plume. 4,0 Groundwater Monitorina_ The following sections detail the methods and procedures used in conducting the field work on March 29 through April 1, 1994. The field work included measuring 3 groundwater levels, purging wells, and collecting groundwater samples. The purpose of the monitoring was to assess the groundwater gradient, and the concentration, distribution, and type of petroleum constituents in groundwater. 4.1 Groundwater Elevation Groundwater elevation data was collected from Monitoring Wells MW-la, MW-10, MW- 11, MW-12, MW-13, MW-14a, MW-15, MW-16, and RW-1. Monitoring Wells MW-1 through MW-8 were dry with the exception of MW-la. Monitoring well MW-9 was not located. Monitoring well MW-12a was not sampled due to lack of accessibility. In those wells sampled, the depth of freestanding groundwater was measured to the nearest one hundredth (0.01) of a foot using a Solinst water level indicator. The Solinst water level indicator and attached measuring tape were washed in Alconox and rinsed prior to each use. The well elevations were surveyed by Delta Environmental Consultants, Inc. All elevations were referenced to a bench mark located near the fenced corner at the northeast end of Gulf Street. The bench mark consists of a white woOd post with an elevation of 409.50 feet above mean sea level. Measurements and reference elevations were taken from the north top edge of the well casing. 4.2 Groundwater Monitoring Well Purging Three (3) to four (4) well casing volumes were removed from each well using a submersible purge pump prior to collecting a water sample. The volume of water to be removed was calculated by subtracting the depth to groundwater from the total depth of the well and multiplying by the cross sectional area of the well casing. Water temperature, pH, and conductivity were measured after the removal of each well volume. When the measurements were within 10% of previous measurements, the well was considered stabilized for sampling. The purge data sheets documenting the field results are included as Appendix A. 4.3 Groundwater Sample Collection Groundwater from each monitoring well was sampled for laboratory analyses following the purging of the well. Groundwater samples were collected by lowering a disposable PVC bailer into each monitoring well. Two (2) 40-milliliter VOA vials and a one (1) liter amber bottle were filled with the collected groundwater sample and sealed with teflon-lined lids. Care was taken to ensure no headspace or air remained trapped within the vial or bottle when sealed. The water samples were immediately placed in an iced cooler at 4° centigrade for storage and transport. The samples were logged on a chain of custody document, and transported to a California certified laboratory for chemical analyses. 4.4 Analytical Results Ten (10) groundwater samples were analyzed by Halcyon Laboratories of Bakersfield, a State certified laboratory, in accordance with State guidelines and EPA protocols. The groundwater samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg), diesel (TPHd), benzene, toluene, ethylbenzene, and total xylenes (BTEX) using DHS Luff Method / 8015M and EPA Method 8020/5030, respectively. The Method Detection Limits for the laboratory analyses were 50 ug/I for TPHg, and TPHd, and 0.3ug/I for BTEX. The laboratory reports and chain of custody documents for these samples are included in Appendix B. Table 1 below summarizes the laboratory results. 5 MW-la Mw-10 MW-11 MW-11A MW-12 MW-13 M W_,- ! MW-15 i TABLE 1 { [SUMMARY OF LABORATORY ANALYSE,~ OF GROUNDWATER SAMPLES FROM QUARTERLY MONITORING 23.47 23.14 25.19 23.39 24.68 25.72 24.64 24.43 December 8 & 9 ND ND 10 ND 70 ND ND 120 780 9 ND ND . 1993 70 920 2 7 4800 9 5100 230 ND ND ND ND 120000 ND 220000 8100 ND ND MW-16 22.18 ND ND ND ND 25.8 3orted in ._ug RW-1 Results 1 BTEX MDL =_ 0.3ug/I 1 ND /L (PPb) '?PHg = Total Petroleum Hydrocarbons as gasoline TPHd -- Total Petroleum Hydrocarbons as dieselJ ND --- N0r{~J~,t,-~ , ......... ....... ' 1 T_P~_g an~ TPHd MDL = 50ug/.l_ . ND ND ND ND ND ND ND ND ND ND 5.0 Discussion of Anal_vtical Results Exhibits 5 and 6 graphically show interpretations of the changing aerial distribution and concentration in parts per billion (ppb) of TPHg from December 1993 to March 1994. Exhibit 5, the December, 1993 monitoring period, shows a condensed plume which lies between MW-11 and MW-12. Exhibit 6, March, 1994 monitoring period, shows the plume has greatly increased in magnitude and size in the down gradient direction. Monitoring well MW-13 , in the down gradient direction of the plume, contains 8,100 ppb for TPH gasoline. 6 Laboratory analysis for the March, 1994 groundwater monitoring period indicate that TPH as gasoline in the central portion of the plume has increased significantly, whereas volatile aromatics (BTEX) appear to have stabilized and are essentially the same. Benzene concentrations range from non-detect to 70 ppb. TPH as gasoline concentrations range from non-detect to 220,000 ppb. Heavier volatile aromatics (xylenes) ranged from non-detect to 4,800 ppb. The highest concentrations of TPH as gasoline are centered around MW-12, located at the southwest corner of the Davies Oil site. The distribution of volatile aromatics (BTEX) roughly approximates the TPH as gasoline plume with the exception of downgradient spreading of the lighter aromatics (benzene and toluene). Overall, the analytical results indicate that significantly impacted groundwater continues to be present beneath the Davies Oil site. The areal extent and concentration of the hydrocarbon plume have shown a significant increase when compared to previous quarterly monitoring events. 6.0 Site Geology The sediments underlying the site are Quaternary alluvial and fluvial deposits consisting of unconsolidated fine- to coarse-grained sands and sandy silts (Calif. Div. of Mines and Geol., 19642). The soil in the subsurface encountered from previous work consists of well graded to poorly graded sands and gravels to a depth of approximately 65 feet below the sudace grade (bsg). 7.0 Site Hydrogeology Published data (KCWA, 19903) shows the site is located within a region of groundwater mounding. The mounding is presumably a result of groundwater recharge from large surface holding ponds in association with a water purification plant, located .approximately 1/4 mile to the northeast. The regional groundwater gradient beneath the site is to the southwest. Previous'work at the site indicated the depth to groundwater remained between 14 to 19 feet (bsg) from July 1986 to March 1989. In subsequent years the depth to groundwater progressively increased, resulting in the drying of several monitoring wells. The continuous drop in groundwater level is believed, in part, the consequence of the prolonged regional drought conditions which existed throughout central and southern California from about 1986 to 1992. In September, 1992 the average depth to groundwater at the site was approximately 35 feet (bsg). In March, 1994, AGI personnel collected groundwater measurements at the site from the existing monitoring wells, and the results are shown in Table 2. Groundwater measurements collected on March 29 through April 1, 1994 show the depth to 2 California Division of Mines and Geology, 1964, Geologic Map of California, Bakersfield Sheet ~ Kern County Water Agency, 1990, Improvement District No. 4, 1989-Report on Water Conditions 7 groundwater has risen to an average depth of about 24.5 feet (bsg), a slight increase from December, 1993. Groundwater gradient in December, 1993 was 0.0069 feet/foot, (Exhibit 3), and groundwater data in March, 1994 (Exhibit 4), shows a gradient at approximately 0.0074 feet/foot in a southwesterly direction, concurring with the regional groundwater maps. March 1994 Quarterly Groundwater I MW-1 409.33 24.18 8-23' I 2" DRY MW-lA 408.10 61.50 23.47 MW-2 409.31 24.30 8.5-24.3' 2" DRY MW-3 410.22 23.70 8.4-24.2' 2" DRY MW-4 409.72 23.60 8.8-24.6' 2" DRY MW-5 407.62 23.30 8.5-23.5' 2" DRY MW-8 MW-9 MW-10 409.68 409.60 408.12 409.43 407.58 408.67 MW-11 24.60 NA 27.00 26.58 NA 27.30 MW1 lA 8.5-23.5' 11.2-26.2' 13.5-28.5' 13.4-28.4 14.4-29.4' # # # # N MW-12 DRY NA 23.14 25.19 23.39 24.68 384.63 384.98 384.24 384.19 383.99 MW-12a MW-13 406.91 48.00 17-47' 4" 25.72 384.19 MW-14 408.63 NA 18-48' 4" NA NA MW-14A 405.67 62.50 24.64 382.15 MW-15 406.79 48.50 18-48' 4" 24.43 385.35 MW-16 407.5 47.5 18-48' 4" 22.18 388.34 RW-1 410.34 35' 15-35' 12" 25.8 384.54 # Corrected Groundwater Depth CDTW-DTW - (SP.G x LHT). CDTW = Corrected depth to water DTW = Measured depth to water SP.G = Specific gravity: unweathered gasoline = 0.75, diesel = 0.80 LHT = Measured li~{uid h&/drocarbon thickness. 8.0 Conclusion~; There are a total of seventeen (17) groundwater Monitoring Wells and two (2) groundwater recovery wells located on and adjacent to the subject site. The initial ten (10) wells (MW-l, 2, 3, 4, 5, 8, 9, 10, 11, and 12) were advanced to total depths of between twenty five (25) and thirty (30) feet below ground surface. Sedimentation and silt accumulation has caused six (6) of the original ten (10) wells to become "dry" at the present groundwater elevation. The highest concentrations of petroleum hydrocarbons reported in this sampling episode were found in MW-12. The water column in MW-12 measured over 2.5 feet for the March, 1994 monitoring period, representing a 0.45 foot increase in water column since December, 1993. Analytical results show a magnitude of change in TPH(g) between December, 1993 monitoring of MW-12 at 39,000 ppb, to 220,000 ppb in March, 1994. Due to the rise in the water table, March, 1994, the increase in TPH gasoline is due to remnant hydrocarbon residuals left on soil which is now being dissolved in the water as the levels rise. Both the concentration and aerial extent of hydrocarbons in groundwater have increased significantly. The most significant changes occurred in the concentration of TPH as gasoline in the central portion of the plume (39,000 ppb vs. 220,000 ppb) and the concentration at the downgradient edge of the plume (ND ppb vs. 8,100 ppb). This lateral spreading of the plume in the down gradient direction also occurred in September 1993. 9.0 Recommendation8 After reviewing previous site history and the results of three monitoring events, AGI recommends going forward with a phased remediation plan. In general, the phases would occur as follows: Install and Operate a 'lhermal oxidation" vapor extraction and groundwater sparge system. Continue monitoring groundwater to estimate potential beneficial effects of the soil vapor groundwater sparge remediation. After reviewing the data generated in the pilot vapor extraction, expand vapor extraction system to full-scale remediation. 9 10.0 Limitations AGI performed this investigation in accordance with generally accepted standards of care which exist in Central California at this time. It should be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of subsurface conditions present. No warranty, expressed or implied, is made. 10 Exhibits NORRIS ROAD .- J/ :il / ROSEDALE C~t SI SITE LOCATION I ," I CALIFORNIA Scale North Aa_uaGeosciences. Inc. 1701 Westwind Drive Suite 103 Bakersfield, California 93301 Telephone: (805) 3Z8-O96Z Fax 328-11Z9 Davies Oil Company 3305 1/2 Gulf Street Bakersfield, California VICINITY MAP Exhibit 1 PIERCE ROAD Paddng .MW-14 MW-13 I A~ ~q~MW-14A ' I ~ I ~ R~h Swoa~ ~ ' ':*:~':':+: I ~::~ ~ ' ~ . ...... Track P~ .~ ~.~w-~ .... ::~:: · ~t I ~I ~ La~a ~??~:::::::.:.:~? [ ...... ~ ~ oav~ ~ ~p~y ~ · __ ~u~ ~p II I AquaGeoscien~s, Inc. DA~S 1701 Wes~ind D~ve, Suite 103 B~~D, C~O~ California 93301 2 B~ersfield, Telephone: (805) 328-0962 PLOT F~: (805) 32801129 ~ North Scale 1"= 125' Olin Space 379.83' .41.MW- 14 PIERCE ROAD Teamsters Local Union Aband~d Pdval~ WcU Rush Swoape Properties I I Truck .MW-15 381.47' I I Pipe Storage Key ~382 ~ ~, Lines of equal elevation ,~ Direction of Inferred flow AquaGeosciences, Inc. 701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 I DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA Groundwater Gradient Map for December, 1993 Kemville Stage And Freight. Open Lot Truck Parking 384.81' Building Davies Oil Company '385.25' Islands Infiltration Gallery EXHIBIT 3 ....................... ~ ........ ~ ................. . .... ~ Sc~e 1"= 125 AquaGeosciences, Inc. DAVIES OIL COMPLY E~~ 70~ Weslwind D~ve, Suite ~ 03 B~ERSHELD, CALIFON~ Bakersfield, California 9330~ Groundwa~r Gra~ent Map Telephone: (805) 328-0962 for F~: (8o5) a~801 ~2~ Mmh 1994 III Open Space Scale 1% 125' ~MW-15 I I Storage I I PIERCE ROAD Pipe Storage KEY Line~ of egual concenlrahons in pans-per-billion Jim's Steel and Supply \x I Tc~.msters Local Un/on I No. 87 P~va~ Well ] Truck Wash Kemville Stage And Freight Open Lot Truck Parking MW-2 Su~a~ Tmka Rush Swoape Properties Building \ .41.MW-16 Davies Oil Company ND Infiltration Gallery AquaGeosciences, Inc. 701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA Groundwater -TPHg Concentration Contour Map for December, 1993 EXHIBIT 5 Open Space I I :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: I Storage Atca I I ND ~v-~4 ii~i!!i::~::~::!!!i~::!::ii!::iiiiii!l offic~ I ~-MW-15 Jim's Steel and Supply Pipe Storage ~ Norlh Scale 1"= 125' KEY Lines of e~ual COB~g:BI I'al.I OYI$ in ~m-~r-billion PIERCE ROAD I Teamsters Local Union No. 87 Rush Swoape Properties Abamlcn~l Ptiva~ Well Truck Wash Kernville Stage And Freight Truck Parking .MW-2 ~ DryTnS~* Dry~ I ~ la r~rN Unaa'Sto~aa~mr I .RW-I tdg~ .... ~ ~ Buil~ng ~-8~ , ,., I ~ ~-~ I=1 .... D~~ ND I~l DavicsOil~mp~WND I Isl~ds ~l~fi~ G~e~ AquaGeosciencos, Inc. 701 Westwind Ddve, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA Groundwater -TPHg Concentration Contour Map for March, 1994 EXHIBIT 6 Tables Hist. Analytical 3/94 i TABLE 3 HISTORICAL GROUNDWATER MONITORING ................................................... ANALYTICAL DATA I 3/30/94 ND J I J ND J 1 J ND ND MW-1 5/0/07 FLH FLH FLH FLH FLH FLH 1 0/22/87 FLH FLH FLH FLH FLH FLH 3/4/88 FLH FLH FLH FLH FLH FLH 3/1 4/09 FLH FLH FLH FLH FI.H FLH 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRY WELL DRYWELL DRY WELL DRYWELL DRY WELL DRY WELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL .......................... .3.../..3..0./9.4.., D~.~LLo . ..D. RYWELL ! DRYWELL L.. DRYWELL DRYWELL ORYWELL MW-lA 9/15/92 1 2 120 NA 120 NA NA 9/20/92 ND 7 I 8 1300 ND 1 2/9/93 ND 4 ND ND ND ND 3/30/94 ND I ND 2 ND ND MW-2 7/11/86 400 310 ND 550 11000 NA 1 2/19/86 9 120 ND 330 930 NA 5/8/87 89 <0,5 <0.5 89 4100 <1 1 0/22/87 5 22 <0,5 1 2 ND 13000 3/4/88 13 2 5 39 1300 ND 3/14/89 5 20 <10 20 4000 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1 / 11 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRYWELL DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRYWELL DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/1/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL :::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::::::::::::: FLH = Floating Liquid Hydrocarbons NS = Not Sampled NA = Not AnaJyzed I ND = Below the indicated detection limit as labeled in the analytical Laborator~ reports. Page 1 Hist. Analytical 3/94 I TABLE 3 J HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-3 7/11186 43 110 NA 170 6100 ND 5/8/87 0.9 <0.5 <0.5 <0.5 354 6.2 I 0/22/87 < 1 3 1 1 12000 ND 3/4/88 <0.1 < 1 < 1 < 1 ND 29000 3/14/89 <0.2 <2 <2 <2 600 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL DRYWELL 12/9/93 DF WELL DRYWELL DRYWELL DRYWELL DRY LL DRYWELL .................................... ......... mYwm. m¥ LL D WEu_ ,..:,..:.::..: ............. .:...: ................... :...:..... :::::::::::::::::::::::::::::::::::::::: MW-4 7/11/86 ND ND NA ND ND NA 5/8/87 1.8 7.6 <0.5 5.2 22 <1 10/22/87 0.1 <1 <1 <1 <50 ND 3/4/88 <0.1 <1 <1 <1 <50 ND 3/1 4/89 <0.2 <2 <2 <2 <50 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRYWF1 ! DRYWELL DRY WELL 3/1/90 DRY WELL ~DRY WELL DRY WELL DRY WFI I DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRY WELL DRY WELL DRY WELL DRYW[=I 1 DRY WELL DRY WELL 1 2/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/30/94 DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL DRY WELL MW-5 9120193 DFht WELL DF~ I/~LL DRY WELL 12~1¥ WL=LL DRYWEI I DFht I/~LL 12/9/93 DRY WELL DRY WELL DRY'WELL DRY WELL DRY WELL DRY WELL 4/1/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL MW-8 518/8 7 <0.5 <0.5 <0.$ <0.5 <0.5 <0.5 1 0122187 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 $!4/8 8 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 3/1 4/89 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 1 0/5/8g DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1 2/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/30/94 DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL Fl_lq = Floating Liquid lqydrocarbons NS -- lqot Sarnpl~l NA = Not Anal¥~'ed ND -- Bolow the Indleatod detoctlon limit as labored in tho anal~lc~al I_ahorator~ roports. Page 2 Hist. Analytical 3/94 J TABLE 3 ] HIST(:~:~AL GROUNDWATER MC~ITORING ANALYTICAL DATA MW-9 5/8/87 1155 3810 1740 15380 33400 <1 1 0/22/87 1 0 1600 2200 37000 170000 ND 3/4/88 40 1100 3600 28000 70000 ND 3/1 4/89 31 120 2200 11000 56000 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3 / 1 / g 0 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/g 1 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 NA NA NA NA NA NA 1 2/9/93 NA NA NA NA NA NA 3/30/94 NA NA NA NA NA NA MW-10 3/4/88 2.2 <1 <1 2 <50 ND 3/1 4/89 <0.2 <2 <2 <2 <50 ND 1 0/5/89 <0.2 <2 <2 <2 <50 ND 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL' DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELl. 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 ND ,. ND ND ND ND ND 1 2/9/93 ND ND ND ND ND ND 3/30/94 ND I I 7 ND ND MW-11 3/4/88 10000 89000 3200 37000 240000 ND 3/1 4/89 FLH FU-! FLH FI.H FLH FLH 1 0/5/89 FLH FU'I FLH FLH FLH FLH 3 / 1 / 90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRYWELL DRYWELL DRY WELL DRYWELL DRY WELL DRY WELL 1 2/9/93 27 280 220 630 4300 ND 3/30/94 1 0 120 70 4800 120000 ND MWol lA 9/15/92 1.3 I 7 NA 75 NA NA 9/20/93 NS NS NS NS NS NS 1 2/9/93 NS NS NS NS NS NS 3/30/94 ND ND ND g ' ND ND NA = Not Anal~,zed. NS = Not Sampled ND = Below the indicated detection limit as labeled in the analytical Laboratory reports. FLH = ,Floating Liquid Hydrocarbons I I I Page 3 Hist. Analytical 3/94 I TABLE 3 I HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-12 3/4/88 600 4200 3700 42000 100000 ND 3/1 4/89 FLH FI.H FLH FLH FLH FLH 1 0/5/89 FLH FM-I F]_H FLH FLH FLH 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/1 1/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 230 2800 620 1300 150000 ND 12/9/93 30 1200 1200 6700 39000 ND 4/1/94 70 780 920 5100 220000 ND MW-13 1/11/91 2 1.2 1.2 0.8 <50 <50 4/5/91 DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/1 5/92 ND ND NA ND NA NA 9/20193 5 1 2 I 59 12000 ND 1 2/9/93 8 9 4 ND ND ND 3/30/94 9 9 ND 230 8100 ND MW-14 1/11/91 30 , 3.6 42 32 1100 <50 4/5/91 DRY WELL DRY WELL DRY WELL DRY WFI I, DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY VVELL DRYW~ ! DRY WELL DRY WELL 3/30/93 NS NS NS NS NS NS MW-14A 9/1 5/92 1.8 ND NA ND . - NA NA 9/20/93 ND ND ND ND ND ND 1 2/9/93 ND ND ND ND ND ND 3/29/94 ND ND ND ND ND ND MW-15 1/1 l/gl 1.5 1.1 1 0.5 <50 <50 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/1 5/92 ND ND NA ND NA NA 9/20/93 ND I~D ND ND ND ND 1 2/9/93 ND I ND ND ND ND 3/29/94 ND ND ND ND ND ND MW-16 1/11/91 <0.1 <0.5 <0.5 <0.5 <50 <50 4/5/91 NA NA NA NA NA NA 6/1 5/91 NA NA NA NA NA NA 9/1 5/92 ND ND NA ND NA NA 9/20/93 ND ND ND ND ND ND 12/9/94 ND ND ND ND ND ND 3/30/94 ND ND ND ND ND ND NA = Not AnaJzed NS = Not Sampled ND = Below the indicated detection limit as labeled in the analytical Laborato~ reports. P~e4 Hist, Liquid Data 3/94 I TABLE 2 .HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA RW-1 1 1/2/88 410,34 23.91 385,99 0,25 1/13/89 20.82 389,12 0,2 3/1 3/89 21,15 388,93 0,01 7/2/89 27,69 382,65 7/31/89 28.55 381,79 8/24/89 29,64 380,7 9/7/89 29,1 381,24 1 0/25/89 30,22 380,12 1 1/8/89 30,71 379,63 1 2/8/89 30,5 379,84 1/4/90 31,55 378,79 2/7/90 31,65 378,69 2/1 9/90 30,31 380,03 5/31/90 33,1 377,24 CCOR 7/25/90 34,5 375,84 8/1 6/90 35,1 375,24 CI3CR 1/11/91 BRY 4/5/91 DRY DRY 6/15/91 CRY DRY 1 2/9/93 26,09 384,25 NO~ 3/30/94 25,80 384,54 NO ODOR Page 1 Hist. Liquid Data 3/94 I TABLE 2 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA I I MW-1 7/1 1/86 409.33 24.18 14.86 394.47 4" free prod. 5/8/87 18.23 391.1 0.5' 1 0/22/87 19.72 389.61 0.06' 1 2/3/87 20.66 388.67 0.8' 3/4/88 19.09 390,24 0.25' 5/2/88 21.24 388.09 0.2' 1 1/2/88 22.83 386.5 :Strong Odor 1/13/89 19.93 389.38 3/1 4/89 20,22 389.11 6/26/89 CRY CRY 10/25/89 CRY DRY 1/4/90 CRY CRY 3/6/90 CRY DRY 1/11/91 DRY DRY 4/5/91 CRY DRY 6/15/91 CRY DRY 9/20/93 CRY DRY STRONG ~ 1 2/9/93 DRY DRY 3/30/94 CRY DRY MW-lA 9/4~92 408.1 61.5 34.98 373.12 9/20/93 25.28 382.82 12/9/93 23.73 384.37 × 3/30/94 23.47 384.63 Page 2 Hist. Liquid Data 3/94 I TABLE 2 I , HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-2 7/11/86 409.31 24.3 15.02 394.29 12/19/86 17.87 391.44 5/8/87 NA NA 1 0/22/87 19.35 389.96 NO PRODUCT 1 2/3/87 20.43 388.88 CO(DR 3/5/88 19.07 390.24 NOODOR 5/2/88 20.7 388.61 SLIGHT OD(~ I 1/2/88 22.79 382.56 1/1 3/89 20.04 389.27 SLIGHT ODOR 3/1 3/89 20.45 388.86 6/26/89 CRY DRY 1 0/5/89 DRY [' DRY 3/6/90 CRY DRY 1/11/91 CRY DRY 4/5/91 CRY DRY 6/15/91 CRY DRY 9/20/93 DRY DRY ~ODO~ 1 2/9/93 DRY DRY 4/1/94 CRY DRY Page 3 Hist. Liquid Data 3/94 I TABLE 2 I ,,. HISTORICAL GROUNDWATER MONITORING I ' I LIQUID LE~EL DATA ' I ' MW-3 7/11186 410.22 23.7 15.37 394.85 NO PRODUCT 5/8/87 18.34 391.88 1 0/22/87 20 390.22 SLIGHT ODOR 1 2/3/87 20.77 389.45 SLIGHT ODOR 3/5/88 19.42 390.8 DIESELODOR 5/2/88 21.1 389.12 SLIGHTOOOR I 1/2/88 22.86 387.36 DIESEL ODOR 1/13/89 20.2 390.02 3/1 3/89 20.77' 389.45 10/5/89 DRY DRY 11/9/89 DRY DRY 1/4/90 DRY DRY 2/7/90 CRY DRY 3/6/90 DRY DRY 1/11/91 CRY DRY 4/5/91 DRY DRY 6/15/91 CRY CRY 9/20/93 CRY CRY 12/9/93 DRY DRY 3/30/94 CRY CRY Page 4 Hist. Liquid Data 3/94 I TABLE 2 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-4 7/11/86 409.72 15.06 394.66 5/8/87 .17.87 391.85 10/22/87 18.46 391,26 12/3/87 20.41 389.31 3/5/88 19.03 390.69 5/2/8 8 20.58 389.14 11/2/88 22,5 389.2 1/1 3/89 20.08 389.64 3/1 3/89 20.3 389.42 6/26/89 DRY CRY 1 0/5/89 DRY DRY · I 1/9/89 DRY DRY 1/4/90 CRY CRY 2/7/90 I:::I~" 3/6/90 , DRY DRY 1/11/91 DRY DRY 4/5/91 DRY CRY 6/1 5/91 DRY DRY 9/20/93 DRY' DRY 12/9/93 CRY DRY 3/30/94 DRY DRY MW-5 3/1 3/89 407.62 23,3 18.32 389.3 6/26/89 21.79 385.83 10/25/89 CRY CRY 9/21/93 DRY CRY 1 2/9/93 DRY DRY 4/1/94 DRY DRY Page 5 Hist. Liquid Data 3/94 I TABLE 2 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-8 5~8~87 409.68 24.6 1 8 391.68 10/22/87 19,6 390.08 12/3/87 20.6 389.88 3/4/88 19,27 390.41 5/2/88 DRY CRY 11/2/88 DRY DRY. 1/1 3/89 DRY ERY 3/1 3/89 20.7 388.98 6/26/89 DRY DRY 1 0/5/8 9 CRY DRY 1 1/9/89 DRY DRY 1/4/90 CRY CRY 2/7/90 DRY 3/6/90 CRY ERY 1/11/91 CRY DRY 4/5/91 DRY DRY 6/15/91 CRY DRY 9/20/93 ERY DRY 12/9/93 DRY DRY 3/30/94 CRY DRY Page 6 · Hist. Liquid Data 3/94 I TABLE 2 HISTORICAL GROUNDWATER MONITORING MW-9 5/8/8 7 406.6 15.37 391.23 1 0/22/87 17.38 389.22 12/3/87 18.12 388.48 3/4/88 16.7 389.9 5/2/88 18.26 388,34 1 1/2/88 CRY ERY 1/1 3/89 17.87 388.72 3/1 3/89 18.2 388.4 6/26/89 CRY DRY 1 0/5/89 DRY DRY 11/9/89 DRY DRY 1/4/90 ~ DRY 2/7/90 DRY DRY 3/6/90 CRY CRY 1/11/91 DRY ERY 4/5/91 DRY DRY 6/1 5/91 CRY DRY 12/9/93 Can't locate Can't locate .......................................... .~ L..3......0...../.....9....~ ................................................................. I ......c......a...~.i.!...L.o.....c..,.a...L.e... ...... ..C......a......n...i.L L.o,.c.....a...L.e... ..................................... MW-10 3~5/88 408.12 27 17.52 390.6 5/2/88 19.28 389.04 I 1/2/88 21 387.12 1/1 3/89 18,36 389.76 3/1 3/89 18.82 389.3 6/26/89 22.52 385,6 7/27/89 23.2 384.92 1 0/5/89 24.53 383.59 1/4/90 26.42 381.7 2/7/90 27.09 381.03 3/6/90 CRY CRY 1/11/91 CRY 4/5/91 DRY DRY 6/1 5/91 CRY DRY 9/21/93 24.72 383.4 1 2/9/93 23.31 384.81 3/30/94 23.14 384.98 Page 7 Hist. Liquid Data 3/94 I TABLE 2 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA :MW-11 3/5/88 409.43 26.58 19.23 390.2 ~COOF 5/2/08 20.78 388.65 NO PRODUCT 1 1/2/88 23.57 385.56 0.75' free pro, 1/1 3/89 20.62 388.81 0.5' 3/13/89 20.63 388.8 0.3' 6/26/89 24.37 385.06 0.01' 7/27/89 25.95 384.24 !1.02' 1 0/5/89 CRY DRY STRCt~ O00~ 1/4/90 CRY CRY ' ST'RONG 0001:~ 2/7/90 CRY DRY STI:IONG OEX3~ 3~6~90 DRY DRY 1/11/91 DRY CRY 4/5/91 DRY CRY 6/15/91 DRY DRY 9/20/93 DRY CRY STRONG ODOtq 1 2/9/93 25.55 383.88 3/30/94 25.19 384.24 ~ODC~ MW-11A 9/4/92 *407.58 34.8 372.78 12/9/93 Not sampled Not Sampled 3/30/94 23.39 384.19 MW-12 3/5/88 408.67 27.3 18.62 390.05 STRONG OCOI; 5/2/88 20.16 388.51 SLIGHT OO(~ 11/2/88 22.86 385.81 0.5' free prod 1/13/89 19.81 388.86 0.2' 3/13/89 20.02 388.65 0.1' 6/26/89 24.54 384.77 0.94' 7/27/89 25.39 384.05 1.02' 1 0/5/89 26.6 383.08 0.35' 1/4/90 CRY CRY 2/7/90 CRY CRY 3/6/90 CRY CRY 1/11/91 CRY DRY 4/5/91 DRY DRY 6/15/91 DRY CRY 9/21/93 26.83 381.84 12/9/93 25.13 383.54 14/1/94 24.68 383.99 Page 8 Hist. Liquid Data 3/94 I TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-13 1/10/91 409.91 48 NA NA 4/5/91 DRY DRY 6/15/91 CRY DRY 9/4/92 40.94 368.97 9/20/93 29.21 380.7 12/9/93 26.71 380.2 3/30/94 25.72 384.19 MW-14 1/1 0/91 408.63 NA NA 4/5/91 CRY DRY 6/15/91 DRY CRY 12/9/93 Not Sampled Not Sampled 3/30/94 Not Sampled Not Sampled MW-14A 9/4/92 406.79 ~ 62.5 41.25 365.54 9/20/93 28.6 378.19 1 2/9/93 25.84 379.83 3/29/94 24.64 382.15 MW-15 1/1 0/91 409.78 48.5 NA NA 4/5/91 DRY ERY 6/15/91 CRY DRY 9/4/92 40.15 369.63 9/20/93 27.65 382.18 1 2/9/93 25.32 381.47 3/29/94 24.43 385.35 :~:i:i:~:~:~:~!~!~!~:~!~:~:i:~:i:~:i:~:~:~:~:~:~:~:~:~:~:~:~:~:~:~:~:~:~:i~i:i~i:i:~:~:~:~:~:~:i:~:i>;:i~:~:~:~:~:~:~:~:~:i:~:~:~:~:~:~:~:~:~:~::~:~:~:~:~:~:i:i:i:i:i:~:;:~:~:~:i: :!i:i:i!~:~:~!~!~.'.~.~i:i:.::i:i:i:i:~:~:~:~:~:~:~:i:~';:~:~:i:~: MW-16 9/4/92 410.52 32.28 378.24 9/21/93 23.38 387.14 1 2/9/93 22.25 385.25 3/30/94 22.18 388.34 Page 9 Appendix A Groundwater Purge Data Sheets AquaGeosciences, Inc. : Groundwater Sctenttsts· Environmental Consultants 1701 Westwind Drive, Suite 101 · Bakersfield, California 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: RW-1 PROJECT NO.: PROJECT NAME: DAVIES OiL CoMPaNY DATE: MARCH 30t 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 25.80' TOTAL DEPTH OF WELL: 36.5' WELL DIAMETER: 12" CASING VOLUME: 62.8 .qallons METHOD OF PURGING: KV Purge Pump INTAKE :CUM. VOL WELL DEPTH (GAL) PUMPED 30' 10 0.15 30' 20 0.31 30' 30 0.477 30' 40 0.63 30' 50 0.79 30' 60 0.95 70 1.11 80 1.27 90 1.43 100 1.59 110 1.74 120 1.90 130 2.06 140 2.22 150 2.38 30' 30' 30' 147 30' pH (UNITS) SEC SAMPLE REMARKS 0Jmhos/ CONTROL cm) NO. (COLOR, TURBID)TY, ETC.) 7.7O 335 7.50 326 7.25 320 7.07 318 6.93 320 6.80 319 6.78 320 6.65 319 6.60 319 6.58 320 6.56 320 6.57 320 6.56 319 6.56 319 6.56 319 CLEAR NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR SLT. PETROLEUM ODOR CLEAR, NO ODOR CLEAR, SLT. PETROLEUM ODOR CLEAR, NO ODOR CLEAR, SLT. PETROLEUM ODOR RW-1 SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.011pH 7.0 pH 10.0 TEMP °C I INSTRUMENT READING , SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION/~MHOS / CM @ 25° C 1413 TEMP °C INSTRUMENT READING SAMPLED AT 25.80 FT. FINAL DEPTHTO WATER 25.82 FT. 3 CASING VOLUMES = 188 GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD G.,'otmdwal~'Sde~tL~ts · Envtrom3teatalCoasultants AND WELL DEVELOPMENT DATA 1701 Westwlnd Drive, Suiee 101 · Bakemfleld, California 93301 SAMPLE ID OR WELL NO.: MW-1 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: DRY TOTAL DEPTH OF WELL: WELL DIAMETER: 2" CASING VOLUME: METHOD OF PURGING: CUM. VOL. WELL (GAL) PUMPED ,SEC SAMPLE pH (pmhos/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE KCL SOLUTION pMHOS / CM @ 25° C TEMP°C INSTRUMENT READING CALIBRATION / STANDARDIZATION SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: NO DATA COLLECTED GALS. A q .s cfi. 1701 Westw'md Drive, Sult~ 101 · Bakersfield, California 93.301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-la PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 23.47' TOTAL DEPTH OF WELL: 61.s0' WELL DIAMETER: 4" CASING VOLUME: 24.82 gallons METHOD OF PURGING: KV Purge Pump TIME INTAKE DEPTH 1316 30' 1320 30' 1324 30' 1328 30' 1332 30' 1336 30' 1340 30' 1344 30' 1444 30' 348 32' 32' 32' 32' 32' 32' CUM. VOL. (GAL) PUMPED 5 0.20 10 0.40 15 0.60 20 0.80 25 1.00 30 1.20 35 1.40 40 1.60 45 1.80 50 2.0 55 2.2 60 2.4 65 2.6 70 2.8 75 3.0 SE(: SAMPLE REMARKS pH ~mhos/ CONTROL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) 7.38 323 CLEAR~ NO ODOR 7.30 233 CLEAR, NO ODOR 7.25 254 CLEAR, NO ODOR 7.25 283 CLEAR, NO ODOR 7.17 274 CLEAR, NO ODOR 7.11 280 CLEAR~ NO ODOR 7.01 298 CLEAR, NO ODOR 6:96 291 . CLEAR, NO ODOR 6.87 293 CLEAR, NO ODOR 6.83 289 CLEAR, NO ODOR 6.83 321 CLEAR~ NO ODOR 6.82 298 CLEAR, NO ODOR 6.83 298 CLEAR, NO ODOR 6.79 301 CLEAR, NO ODOR 6.81 296 CLEAR, NO ODOR MW-lA SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE KCL SOLUTION ~MHOS / CM @ 25° C TEMP'C INSTRUMENT READING SAMPLED AT 25.23 CALIBRATION / STANDARDIZATION Ft. FINAL DEPTH TO WATER Z9.60 58640 FT. 3 CASING VOLUMES = 74.46 GALS. NOTES: AquaGeosciences, Inc. 1701 Westwtnd Drive, SuJ,~e 101 * Bakersfield, California 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-2 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: APRIL 1 ~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: DRY TOTAL DEPTH OF WELL: WELL DIAMETER: 2_" CASING VOLUME: METHOD OF PURGING: 24.3' INTAKE CUM. VOL, WELL DEPTH (GAL) PUMPED SAMPLE pH ~mhos/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: NO DATA COLLECTED GALS. AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c,o~a,,a~, s~ · ~.,~~ co.~.~ AND WELL DEVELOPMENT DATA 1701 W~d ~ve, ~ 101 · ~fl~d, ~om~ 9~01 SAMPLE ID OR WELL NO.: MW-3 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: DRY TOTAL DEPTH OF WELL: WELL DIAMETER: 2" CASING VOLUME: METHOD OF PURGING: 23.7' TIME INTAKE CUM. VOL. WELL DEPTH (GAL) PUMPED SEC SAMPLE pH (pmhos/ CONTROL (UNITS) cra) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC El FCTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER Ft. 3 CASING VOLUMES = NOTES: STRONG PETROLEUM ODOR ON END OF SOLINST GALS. AquaGeosciences, Inc. WATER QUALITY SAMPUNG RECORD c~o~awa~, s~e.u.~ · ~.~o.~e.,-' Co.~d,-.~ AND WELL DEVELOPMENT DATA 1701 Westwtnd Dd. ve, Suite 101 · Bakem~teld, Ca~ornia 93301 SAMPLE ID OR WELL NO.: Mw-4 PROJECT NO.: PROJECT NAME: DAVIES OiL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: DRY TOTAL DEPTH OF WELL: WELL DIAMETER: 2" CASING VOLUME: METHOD OF PURGING: 23.6' CUm. VOLi WELL VOL DEPTH (GAL) PUMPED SAMPLE pH ~mhos/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION / CM @ 25* C 1413 TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES -- NOTES: NO DATA COLLECTED GALS. ^-- '~ :~Hua~eosc~ences, Inc. WATER QUALITY SAMPLING RECORD C~o~dw.~ sd~.~ · a,.,~o,,.,~,,~ co.~,~,,~ AND WELL DEVELOPMENT DATA 1701 Wesfwtnd Drive, Suite 101 · Bakersfield, CaLLfomia 93301 SAMPLE ID OR WELL NO.: MW-5 DEPTH TO WATER: DRY PROJECT NO.: TOTAL DEPTH OF WELL: 23.3' PROJECT NAME: WELL DIAMETER: 2" DATE: APRIL 1~ 1994 CASING VOLUME: SAMPLED BY: . METHOD OF PURGING: DAVIES OIL COMPANY PATRICK MCCULLOUGH SEC SAMPLE REMARKS pH (#mhos/ CONTROL INTAKE CUM. VOL, WELL VOL (UNITS) cm) NO. (COLOR, TURBiDiTY, ETC.) DEPTH (GAL) PUMPED pH CALIBRATION / STANDARDIZATION SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ 25" C 1413 6868 TEMP °C INSTRUMENT READING SAMPLED AT ft. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: NO DATA COLLECTED GALS. ~- ~ :~c[ua~eo$oe~tce$,[ tc. WATER QUALITY SAMPLING RECORD C~o=,dw~,,. S~e~U.~ · E~,,~o,~e.~ Co,~.~ AN D WELL DEVELOPMENT DATA 1701 Wes~lvtnd Drive, Suite 101 · Bake4'slteid, Cabi,fotata 93301 SAMPLE ID OR WELL NO.: MW-8 DEPTH TO WATER: DRY PROJECT NO.: TOTAL DEPTH OF WELL: Z4.6' PROJECT NAME: WELL DIAMETER: 2" DATE: MARCH 30~ 1994 CASING VOLUME: SAMPLED BY: METHOD OF PURGING: DAVIES OIL COMPANY PATRICK MCCULLOUGH TIME SEC SAMPLE REMARKS INTAKE CUM. VOL. WELL (pmhos/ CONTROL DEPTH (GAL) PUMPED cm) NO. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP°C INSTRUMENT READING pH 4.01 pH 7.0 pH 10.01 I SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLlmON / CM @ 25° C 1413 TEMP °C INSTRUMENT READING SAMPLED AT . FT. FINAL DEPTH TO WATER .... _ FT. 3 CASING VOLUMES = NOTES: NO DATA COLLECTED GALS. AquaGeosciences, Inc. '~' Grotmdwaeer Scientists · Environmental Consultants 1701 Westwtnd Drive, Suite 101 * Bakersfield, California 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-10 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30r 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 23.14' TOTAL DEPTH OF WELL: 27.0' WELL DIAMETER: 2" CASING VOLUME: 0.6 ,qallons METHOD OF PURGING: KV Purge Pump 256 INTAKE CUM. VOL. WELL VOl DEPTH (GAL) PUMPED 26' 0.5 0.83 26' 1 1.66 26' 1.5 2.5 26' 2 3.33 Z6' 2.5 4.16 SAMPLE pH (pmhos/ CONTROL (UNITS) cm) NO. 7.50 411 7.35 418 7.18 411 7.09 412 7.08 411 MW-10 REMARKS (COLOR, TURBIDITY, ETC.) CLOUDY YELLOW, SLT. SEWER ODOR CLOUDY YELLOW, SLT. SEWER ODOR CLEAR, V. SLT. SEWER ODOR CLEAR, V. SLT. SEWER ODOR CLEAR, V. SLT. SEWER ODOR SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ Z5° C 6868 TEMP °C INSTRUMENT READING SAMPLED AT Z3.60 Fr. FINAL DEPTH TO WATER 24.32 Fr. 3 CASING VOLUMES = 1.8 GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD '" Gtotmdwa~et Sde~Usts · EnvLtonme~tal Consultants AND WELL DEVELOPMENT DATA 1701 Westwind Drive, Suite 101 · Bakersfield, Ca~omta 93301 5AMPLE ID OR WELL NO.: MW-ll PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 25.19' TOTAL DEPTH OF WELL: 26.58' WELL DIAMETER: 2" CASING VOLUME: 0.16 gallons METHOD OF PURGING: Bailer INTAKE CUM. VOL. WELL DEPTH (GAL) PUMPED 25.3' 0.1 0.625 25.3 0.2 1.25 25.3 0.3 1.875 25.3' 0.4 2.5 25.3 0.5 3.125 SEC SAMPLE REMARKS pH (pmhos/ CONTROL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) 6.90 667 CLOUDY GRAY STRONG PETR. ODOR 6.66 686 CLOUDY GRAY STRONG PETR, ODOR 6.65 672 CLOUDY GRAY STRONG PETR. ODOR 6.52 666 CLOUDY GRAY STRONG PETR. ODOR 6.58 665 CLOUDY GRAY STRONG PETR, ODOR MW- 11 SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT. 25.25 FT. FINAL DEPTH TO WATER 26.10 FT. 3 CASING VOLUMES = 0.5 GALS. NOTES: AquaGeosciences, Inc. 1701 We~twtnd Drtve, Sutl~ 101 · Bakersfield, California 93301 WATER QUALFTY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: Mw-1 lA PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 23.39' TOTAL DEPTH OF WELL: WELL DIAMETER: 4" CASING VOLUME: METHOD OF PURGING: KY Purge Pump INTAKE CUM. VOL, WELL DEPTH (GAL) PUMPED 5 10 pH (uNrrs) SEC SAMPLE 0~mhos/ CONTROL cm) NO. 7.55 98 7.20 160 REMARKS (COLOR, TURB~Dll'Y, ETC.) CLOUDY GRAY STRONG PETR. ODOR CLOUDY GRAY STRONG PETR. ODOR CLOUDY GRAY STRONG PETR. ODOR CLEAR GRAY STRONG SEWER/PETR. ODOR CLEAR GRAY STRONG SEWER/PETR. ODOR CLEAR GRAY STRONG SEWER/PETR. ODOR CLEAR GRAY STRONG SEWER/PETR. ODOR CLEAR GRAY STRONG SEWER/PETR. ODOR CLEAR GRAY STRONG SEWER/PETR. ODOR 30' 15 30' 20 30' 25 30' 30 30' 35 30' 40 30' 45 7.03 250 7.07 252 6.94 262 6.93 264 6.98 257 6.94 275 6.91 277 1 A SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCL SOLUTION/JMHOS / CM @ 25° C 74 6868 TEMP °C INSTRUMENT READING SAMPLED AT 25.30 FT. FINAL DEPTH TO WATER 26.21 FT. 3 CASING VOLUMES: GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD G,o~.a,,~r sac. mm · a, wo,=~,~ co.~,-,m AN D WELL DEVELOPMENT DATA 1~1 W~d ~ve, ~ 101 · ~fl~d, ~om~ 9~1 bAMPLE ID OR WELL NO.: MW-~ 2 DEPTH TO WATER: 24.68' PROJE~ NO.: TOTAL DEPTH OF WELL: 27.30' PROJE~ NAME: WELL DIAMETER: ~" DATE: APRIL 1 ~ 1994 CASING VOLUME: 0.42 gallons SAMPLED BY: METHOD OF PURGING: Bailer DAVIES OIL cOMPANY PATRICK MCCULLOUGH SEC SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. VOL. (UNITS) cra) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED 24.68 0.2 0.47 6.96 810 24.68 0.4 0.95 6.87 522 24.68 0.6 1.42 509 24.68 0.8 1.90 508 24.68 1.0 2.30 506 MW-12 CLEAR V. STRONG PETR. ODOR CLEAR V. STRONG PETR. ODOR ON SURFACE CLEAR GRAY CLEAR GRAY V. STRONG PETR. ODOR CLEAR GRAY V. STRONG PETR. ODOR SAMPLE pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ 25° C 74 718 I TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER ..... I 1413 6868 158640 I I I FT. 3 CASING VOLUMES = 1.28 NOTES: GALS. AquaGeo$cience$, Inc. WATER QUALITY SAMPLING RECORD C,o..a,~a~ S~..,,~ · ~.,~-o.~.~ Co.~.-.~ AN D WELL DEVELOPMENT DATA 1701 W~d ~ve, ~ 101 · ~e~fl~d, ~om~ 9~1 5AMPLE ID OR WELL NO.: MW-13 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 30~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 25.72' TOTAL DEPTH OF WELL: 48.0' WELL DIAMETER: 4" CASING VOLUME: 14.49 .qallons METHOD OF PURGING: KV Purge Pump INTAKE CUM. VOL. WELL DEPTH (GAL) PUMPED 30' 5 0.34 30' 10 0.68 30' 15 1.03 30' 20 1.37 30' 25 1.72 30' 30 2.06 30' 35 2.41 30' 40 2.75 30' 45 3.10 6.57 SEC SAMPLE (pmhos/ CONTROL cm) NO. 474 452 448 REMARKS (COLOR, TURBIDITY, ETC.) CLEAR MODERATE PETR. ODOR CLEAR MODERATE PETR. ODOR CLEAR MODERATE PETR. ODOR CLEAR MODERATE PEER. ODOR CLEAR MODERATE PETR. ODOR CLEAR MODERATE PETR. ODOR 6.73 453 6.75 460 6.80 466 6.81 466 6.82 462 6.82 461 CLEAR MODERATE PETR. ODOR CLEAR MODERATE PETR. ODOR CLEAR MODERATE PETR. ODOR 3 SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.011pH 7.0IPH10.0 I TEMP'C 67.7 I - INSTRUMENT READING 4.10 I 7.01 I - SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ 25° C TEMP °C SAMPLED AT 25.72 FT. FINAL DEPTH TO WATER 25.73 I 68681 58640 I FT. 3 CASING VOLUMES = 43.49 GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c~dw,~, s~,,~ · ~~ co~,~ AND WELL DEVELOPMENT DATA 1701 W~d ~ve, ~ 101 · ~fl~d, ~om~ 9~1 SAMPLE ID OR WELL NO.: MW-14A PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 29t 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 24.64' TOTAL DEPTH OF WELL: 62.5' WELL DIAMETER: 4" CASING VOLUME: 24.63 flallons METHOD OF PURGING: KV Purge Pump TIME INTAKE DEPTH 1510 1514 28' 1 518 28' 1522 28" 1525 28" 1528 28' 1531 28' ~34 28' CUM. VOL. WELL (GAL) PUMPED 5 0.20 10 0.40 15 0.60 20 0.80 25 1.0 30 1.21 35 1,41 28' 40 1.61 28' 45 1.81 28' 50 2.02 55 2.22 28' 60 2.42 28' 65 2.G2 28' 70 2.82 28' 75 pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.011 pH 7.0 TEMP °C I INSTRUMENT READING SAMPLE pH ~mhos/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ET(:.) CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR 6.4 321 6.3 312 6.3 313 6.2 297 6.0 315 6.0 317 6.0 311 6.0 316 6.0 317 6.0 316 6.0 316 6.0 312 6.0 311 6.0 314 CLEAR, NO ODOR CLEAR, NO ODOR MW-14A SAMPLE 10.Oi SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 24.64 FT.' FINAL DEPTH TO WATER 24.69 FT. 3 CASING VOLUMES -- 73.91 GALS. NOTES: I~1 Westwtnd Drive, Suite 101 · Bakersfield, California 93301 WATER QUALIFY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-15 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: MARCH 29~ 1994 SAMPLED BY: PATRICK MCCULLOUGH DEPTH TO WATER: 24.43' TOTAL DEPTH OF WELL: 48.5' WELL DIAMETER: 4" CASING VOLUME: 15.6 gallons METHOD OF PURGING: KV Purge Pump INTAKE CUM. VOL, WELL VOL DEPTH (GAL) PUMPED pH (uNrrs) SEC SA~4PLE REMARKS ~mhos/ CONTROL cm) NO. (COLOR, TURBIDITY, ETC.) 30' 5 0.319 6.4 530 30' 10 0.64 5.9 393 30' 15 0.95 6.0 389 30' 20 1.27 6.0 385 30' 25 1.59 6.0 387 30' 30 1.91 6.0 382 30' 35 2.23 6.0 380 30' 40 2.55 6.0 383 30' 45 ;).87 381 CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR SAMPLE $40 5 pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING pH 4.01 pH 7.0 SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ 25Q C TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER. 25.21 FT. 3 CASING VOLUMES = 46.99 GALS. NOTES: ^- '~ :~qua~eosc~ences,Inc. WATER QUALITY SAMPLING RECORD Grou~dwal~' Sdenl:L~t~·~en~ Co~tan~ AN D WELL DEVELOPMENT DATA 1701 W~d ~ve, ~ 101 · ~fl~d, C~om~ 9~01 SAMPLE ID OR WELL NO.: MW-16 DEPTH TO WATER: 22.18' PROJE~ NO.: TOTAL DEPTH OF WELL: 47.5' PROJE~ NAME: WELL DIAMETER: 4" DATE: MARCH 30~ 1994 CASING VOLUME: 25.32 ~llons SAMPLED BY: METHOD OF PURGING: KY Purge Pump DAVIES OIL COMPANY PATRICK MCCULLOUGH SEC SAMPLE REMARKS pH O~mhos/ CONTROL CUM. VOL. WELL (UNITS) cra) NO. (COLOR, TURBIDITY, ET(::.) (GAL) PUMPED · 5 0.19 7.40 278 LT. STRAW - NO ODOR 10 0.39 7.90 261 LT. STRAW - NO ODOR 15 0.59 7.50 264 LT. STRAW - NO ODOR 20 0.78 7.44 271 LT. STRAW - NO ODOR 25 0.98 7.36 271 LT. STRAW - NO ODOR 30 1.18 7.30 270 LT. STRAW - NO ODOR 35 1.38 7.29 274 LT. STRAW - NO ODOR 40 1.57 7.35 271 LT. STRAW - NO ODOR 45 1.77 7.32 270 LT. STRAW - NO ODOR 50 1.97 7.31 271 , LT. STRAW - NO ODOR MW-16 SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCL SOLUTION/JMHOS / CM @ 25° C 74 1413 6868 TEMP °C INSTRUMENT READING SAMPLED AT 22.18 FT. FINAL DEPTH TO WATER 22.20 FT. 3 CASING VOLUMES = 75.96 NOTES: GALS. Appendix B Chain of Custody and Analytical Results CHAIN OF CUSTODY AND ANALYSIS REQUEST 1701 Westwind Dr., Suite 103. Bakersfield, CA 93301 805-328-0962 CLIENT NAME 4 ~:""" ANALYSES REQUESTED REMARKS PROJECT NAME ,.~4~,',-.x O,'// ~O ADDRESS PHONE .~2. I~- o,~¢ z_ PROJECT M^NAOE, ,/~. ~ e¢ */~.,.~ 4 FAX SAMPLER NAME ~ 7~','~ /'(' ~ ¢(4 //~'~j. 4~ 0 SAMPLE DATE/TIME SAMPLE DESCRI-PTION. IDENTIFICATION # 6AMPLED Matrix. container, etc... / fJ'"o ~ Dat~/~ time RELINQUISHED BY Dale ~ time ~UNOUISHED BY 810NATURE A~ PRINTED~AME ~=~,,~ ~ ~o~ ~/~//~ 61ONATURE A~ PRINTED NAME SlONATURE AND PRINTED NAME ~~~~ 810NATURE A~ PRI~ED NAME Cf-lAIN OF CUSTODY AND ANALYSIS REQUEST 1701 Westwind Dr., Suite 103.,' Bakersfield, CA 93301 805-328-0962 CLIENT NAME ~'¢ ~* .J'C- ¢~ c,~.., ? ....._~C . ANALYSES REQUESTED REMARKS SAMPLER NAME SAMPLE DATE/TIME SAMPLE DESCRIPTION, IDENTIFICATION. ~ SAMPLED Matrix, container, ~UNQUISHED BY ~~~~Dat~ time RELINQUISHED BY Project: Davies Oil Co. CcrE~fiod by r.h¢ '_~car. o of Cal~forn,o Oo~ar~m~n~ o1: H~ald-, S~rv,cas 1701 Westwind Dr. Suite 103 Bakersfield, CA 93301 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and .Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: RW-1 Matrix: Water Analyst: MCM Lab #: 94A371 Date of sampling: March 30, 1994 Date of analysis: April 1, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene ND [tg/L (ppb) 1. Toluene 1. gg/L (ppb) 1. Ethylbenzene ND gg/L (ppb) 1. Xylenes 1. gg/L (ppb) 1. TPH gasoline ND gg/L (ppb) 100. TPH diesel ND pg/L (ppb) 100. *PQL = Practical Quanmation Limit ND = No Detected at given PQL Rafa41 ~'spinosa Lenl/'Z, Ph.D. Laboratory Director. Project: Davies Oil Co. Cartifi~d by i:.h~. _~i:.ar.~ of Callron'ua O~.oartm~nl: of Hoaith _R~rvJc~s 1701 Westwind Dr. Suite 103 Bakersfield, CA 93301 Phone: 805-328-0062, Fa.',(: 80.5-328-1129 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BT'EX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-lA Matrix: Water Analyst: MCM Lab #: 94A370 Date of sampling: March 30, 1994 Date .of analysis: April 1, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene ND gg/L (ppb) 1. Toluene 1. lig/L (ppb) 1. Ethylbenzene ND gg/L (ppb) 1. Xylenes 2. gg/L (ppb) 1. TPH gasoline ND pg/L (ppb) 100. TPH diesel ND pg/L (ppb) 100. *PQL = Practical Quanmation Limit ND = N'o 'Detected at given PQL ah Espinosa Lemz, Ph.D. Laboratory Director. Project: Davies Oil Co. Col'tll~d b9 t.h~ %r. ot~ of Cahfon',a Oar~oi'tmon~ of Hcalt. h ~¢v,4c~,s 1701 Westwind Dr. Suite 103 Bakersfield, CA 93301 PholNe: 805-B28-09(;2, Fa.x: ,_~05-B28-1129 Report of Analysis Test: 80 l 5m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-10 Matrix: Water Analyst: MCM Lab #: 94A369 Date of sampling: March 30, 1994 Date of analysis: April 1, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene ND gg/L (ppb) 1. Toluene 1. [tg/L (ppb) 1. Ethylbenzene 1. [tg/L (ppb) 1. Xylenes 7. ~tg/L (ppb) 1. TPH gasoline ND gg/L (ppb) 100. TPH diesel ND Hg/L (ppb) 100. *PQL = Practical Quanutation Limit ND = No Detected at given PQL Rafael Espinosa Lefiiz, Laboratory Director. Ph.D. Project: Davies Oil Co. Ccrtlfi6d b9 thc Stoto of California ID~oortm-ont of Health 1701 Westwlnd Dr. Suite 103 Bakersfield, CA 93301 Report of Analysis Test: 80 l 5m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-11 Matrix: Water Analyst: MCM Lab #: 94A373 Date of samplhxg: March 30, 1994 Date of m~alysis: April 1, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene 10. gg/L (ppb) 10. Toluene 120. lag/L (ppb) 10. Ethylbenzene 70. gg/L (ppb) 10. Xylenes 4800. [tg/L (ppb) 10. TPH gasoline 120000. gg/L (ppb) 1000. TPH diesel ND gg/L (ppb) 1000. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Rafael Espinosa Leniz, Ph.D. Laboratory Director. Project: Davies Oil Co. C~rtifi~d bv t.h¢. $car.¢ oF Colirarma .Ig, or~arrmc, n~: of: Hcal[h .~,sr',4cos 1701 Westwind Dr. Suite 103 Bakersfield, CA 93301 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge mid Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-1 lA Matrix: Water Analyst: MCM Lab #: 94A372 Date of sampling: March 30, 1994 Date of analysis: April 1, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene ND gg/L (ppb) 1. Toluene ND gg/L (ppb) 1. Ethylbenzene ND [tg/L (ppb) 1. Xylenes 9. [tg/L (ppb) 1. TPH gasoline ND [tg/L (ppb) 100. TPH diesel ND [tg/L (ppb) 100. *PQL = Practical Quantitation Limit ND = No Detected at ~ven PQL Rafael Espinosa Laboratory Director. Ph.D. Project: Davies Oil Co. Ccr~lfie, d bV ~hQ S~:at¢ of Cal~for,',a ID~rDar~m~,n[ of Hcall:h S~rv~ce, s 1701 Westwind Dr. Suite 103 Bakersfiehi, CA 93301 Phone: 805-328-0962, Fa.x: Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-12 Matrix: Water Analyst: MCM Lab #: 94A374 Date of sampling: April 1, 1994 Date of analysis: April 5, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene 70. gffL (ppb) 10. Toluene 780. gg/L (ppb) 10. Ethylbenzene 920. gg/L (ppb) 10. Xylenes 5100. tag/L (ppb) 10. TPH gasoline 220000. gg/L (ppb) 1000. TPH diesel ND gg/L (ppb) 1000. *PQL = Practical Quantttation Limit ND = No Detected at given PQL Rafael Espinosa Leniz, Ph.D. Laboratory Director. Project: Davies Oil Co. Certified bv the c-~tat¢ of Cahfomio ID~rtmcnt of Health 1701 Westwind Dr. Suite 103 Bnkersfleld, CA 93301 Pl~One: 80S-320-0062, Fa×: 80S-3~-I Report of Analysis Test: 80 i. 5m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Pm'ge mid Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-13 Mat-dx: Water Analyst: MCM Lab #: 94A367 Date of sampling: March 30, 1994 Date of analysis: March 31, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene 9. pg/L (ppb) 1. Toluene 9. gg/L (ppb) 1. Ethylbenzene ND pg/L (ppb) 1. Xylenes 2..30. pg/L (ppb) 1. TPH gasoline 8100. gg/L (ppb) 100. TPH diesel..... ND pg/L (ppb) .. 100. *PQL = PractiCal Quantitation Limit ND = No Detected at given PQL Rafael Espinosa Leniz, Ph.D. Laboratory Director. Project: Davies Oil Co. Ccr~:lfiod by ~:h¢ Sl:a~:e oF California I~porl:menl: of Health Ser',/~ces 1701 Westwind Dr. Suite 103 Bakersfield, CA 93301 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons mid BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-14A Matrix: Water Analyst: MCM Lab #: 94A366 Date of smnpling: March 29, 1994 Date of analysis: March 31, 1994 Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene ND pg/L (ppb) 1. Toluene ND pg/L (ppb) 1. Ethylbenzene ND pg/L (ppb) 1. Xylenes ND l, tg/L (ppb) 1. TPH gasoline ND pg/L (ppb) 100. TPH diesel ND pg/L (ppb) · 100. *PQL = Practical Quantitation Limit ND = No Detected at given PQL ~~[~.' PI D Rat~el Espinosa Leni , ~.. Laboratory Director. Project: Davies Oil Co. Cemfied by the ~tote of California 1701 Westwind Dr. Suite 103 Bnkersfield, CA 93301 Phoa¢: 805-328-0962, Fax: $05-328-1129 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences '170'1 Westwind Dr. Suite 101 'Bakersfield, CA 93301 Contact person: Patrick McCullough Sample: MW-16 Matrix: Water Analyst: MCM Lab #: 94A368 Date of sampling: March 30, 1994 Date of analysis: March 31, 1994 .Date of Report: April 12, 1994 Compound Concentration Units PQL* Benzene ND Hg/L (ppb) 1. Toluene ND Hg/L (ppb) 1. Ethylbenzene ND lig/L (ppb) 1. Xylenes ...... ND Hg/L (ppb) 1. TPH gasoline ND [tg/L (ppb) 100. TPH diesel ND Hg/L (ppb) 100. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Rafael iz, Ph. Espinosa D. Laboratory Director. Project Davies Oil Cortifi~d by r.h¢ c~1:o~¢ of Coilformc~ Oor~arl:m~r'~: of H¢oll:h 1701 Westxvind Dr. Suite 103 Bakersfield, CA 93301 Pho ~: 005-320~)~_~2, Fa x: 005-32~- Report of flnaly i Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Thomas Cleary Sample: D-MW-lA Matrix: Water Analyst: MCM Lab #: 94A517 Date of sampling: June 2, 1994 Date of analysis: June 6, 1994 Date of Report: June 7, 1994 Compound Concentration Units PQL* Benzene ND lxg/L (ppb) 1. Toluene ND ~tg/L (ppb) 1. Ethylbenzene ND gg/L (ppb) 1. Xylen,e.s 1. , ....... gg/L (ppb) 1. TPH gasoline 200. gg/L (ppb) 100. TPH diesel........ ND [tgv/L (ppb) .I 100. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Rafael Espinosa Leniz, Ph.D. Laboratory Director. Project Davies Oil Ce~fied by the State of Cahl:ormo D~r~artment of Health Set, cos 1701 Westwtnd Dr. Suite 103 Bakersfield, CA 93301 Photo:' 805-328-0~)G2, Fa.~ 805-328-1129 Report of flnaly is Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Thomas.Cleary Sample: D-MW-10 Matrix: Water Analyst: MCM Lab #: 94A516 Date of sampling: June 2, 1994 Date of analysis: June 6, 1994 Date of Report: June 7, 1994 Compound Concentration Units PQL* Benzene ND gg/L (ppb) 1. Toluene ND [tg/L (ppb) 1. Ethylbenzene ND gg/L (ppb) 1. Xylenes ...... , 9. , ....... ,¢..,g/L (ppb) .... 1. TPH gasoline 6000. gg/L (ppb) 100. TPH diesel ND .... ~tg/L (ppb) 100. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Rafael niz, Ph.D. Espinosa Laboratory Director. Project Oavies Oil C~I~ificd bv ~h¢ S~o~¢ of Coh~rnlo t]~r~¢nt, of H¢olt. h ~r~ccs 1701 Westwind Dr. Suite 103 Bakersfield, CA 93301 Phon~: 805-328-0962, Fax: 805-328-112g · Report of Analy i Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Thomas Cleary Sample: D-MW-11 Matrix: Water Analyst: MCM Lab it: 94A518 Date of sampling: June 3, 1994 Date of analysis: June 6, 1994 Date of Report: June 7, 1994 Compo..und Concentration Units . PQL* Benzene ND ltg/L (ppb) 5. Toluene ND lag/L (ppb) 5. Ethylbenzene 5. I~g/L (ppb) 5. Xylenes .... 290. , ....lag/L (ppb) 5. TPH gasoline 19000. lxg/L (ppb) . 500. TPH diesel ND [tg/L (ppb) ..... .500. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Rafael Esp/nosa Leniz, Ph.D. Laboratory Director. PrOject Davies Oil CcrLi~,d bw thc S~ot¢ of Cahforn~a I'~,,)arLmonl:. oF H¢oIL'h 1701 West.wind Dr. Suite 103 Bnkersfield, CA 93301 Phonc: 80~R-328<)DG2, Fa.~ 805-328-1 I29 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageosciences 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Thomas Cleary Sample: D-MW-1 lA Matrix: Water Analyst: MCM Lab #: 94A519 Date.of sampling: June 3, 1994 Date of analysis: June 6, 1994 Date of Report: June 7, 1994 Compound I .Concentration I Units ....... PQL* . Benzene ND ~tg/L (ppb) 1. Toluene ND ~tg/L (ppb) 1. Ethylbenzene ND [tg/L (ppb) 1. Xylenes , 4. . .... p .g/_L (ppb) _ 1. TPH gasoline 300. gg/L (ppb) 100. _TPH diesel ND .... ~ (ppb) ..... .1.010. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Rafael Espinosa Len/z, Ph.D. Laboratory Director. Project Davies 0il Ccruficd b~ [he Store of Col~¢ormo D¢coru'n.on[ of Health Scr~ccs 1701 Westwlnd Da-. Suite, 103 Bakersfield, CA 93301 Phone: 805-328-0962, Faxz 8,0.~-L~28-1129 Report of Analysis Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageoscienees 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Thomas Cleary Sample: D-MW-12 Matrix: Water Analyst: MCM Lab #: 94A520 Date of sampling: June 3, 1994 Date of analysis: June 6, 1994 Date of Report: June 7, 1994 Compo .und .... C .oneentrafion ...... U.ni.t.s., ..... ,. PQ.L *.,,, Benzene 10, Ixg/L (ppb) 10. Toluene 160. }xg/L (ppb) 10. Ethylbenzene 40. lag/L (ppb) 10. Xylenes 680. l~g/L (ppb) 10. TPH gasoline 185000. I~g/L (ppb) 1000. TPH diesel . ...NA .......... ixg/L ..(ppb) 1000. *PQL = Practical Quantitation Limit ND = No Detected at given PQL Raf~~z, Ph.D. Laboratory Director. Weare Sencl~ I~E~c. tosed Under $~'at~ Cover V'~ The Fdk~r~ I-I Draft Report/Latter r-"1 ReguLator/Ceneq~ndence r-I r~Jres/Mal~frables quaiflcatic~ . r-i cost Estimate r"l Contract ITl ,, These are Transmitted as Chedmd Below:. For Approval For Your Use Copies Were Sent To: i"'1 Per T~ Conv~ For Your '1Tis [kx:tm, mm: Was Sent Via: Cl i-3 ~ Racaipt I"'i Groundwater Scientists ° Environmental Consultants June 1994 Groundwater Quarterly Monitorin(~ Report Davies Oil 3305 1/2 Gulf Street Bakersfield, California Presented To: Bill Davies Davies Oil and Ms. Dolores Gough Kern County Environmental Health Services Department Presented By: AquaGeosciences, Inc. June, 1994 Patrick McCullough Staff Geologist ~ ' ~" No. 4779 Philip ~o~. _#4.779 ~,?~ Princ,p ~ al Hydr~eologist Registration Expires 11/30/96 1701 Westwind Drive, Suite 101 ' Bakersfield, California 93301 (805) 328-0962 · FAX (805) 328-1129 TABLE OF CONTENTS 1.0 2.0 3.0 4.0 4.1 4.2 4.3 4.4 5.0 6.0 7.0 8.0 9.0 10.0 INTRODUCTION FACILITY DESCRIPTION PROJECT HISTORY GROUNDWATER MONITORING Groundwater Elevation Groundwater Monitoring Well Purging Groundwater Sample Collection Analytical Results DISCUSSION OF ANALYTICAL RESULTS SITE GEOLOGY SITE HYDROGEOLOGY CONCLUSIONS RECOMMENDATIONS LIMITATIONS Page # 2 2 2 3 4 4 4 5 6 7 7 10 10 10 Exhibit 1 Exhibit 2 Exhibit 3 Exhibit 4 Exhibit 5 Exhibit 6 Vicinity Map Plot Plan Map March 1994 Groundwater Gradient Map June 1994 Groundwater Gradient Map' March 1994 Groundwater-TPHg Concentration Contour Map- June 1994 Groundwater-TPHg Concentration Contour Map June 1994 Groundwater Monitoring - Liquid Level and Analytical Data Historical Groundwater Monitoring - Liquid Level Data Historical Groundwater Monitoring - Analytical Data Appendix A Groundwater Purge Data Sheets Appendix B Chain of Custody and Analytical Results 1.0 Introduction This report presents the results of the June 1994 Quarterly Groundwater Monitoring performed by AquaGeosciences, Inc. (AGI) at the Davies Oil Company at 3305 1/2 Gulf Street, Bakersfield, California. On June 2 and 3, 1994 depth to water measurements were collected from wells on and around the site. The wells were then purged and sampled for chemical analyses. 2.0 Facility Descri.otion Davies Oil is located at 3305 1/2 Gulf Street in the City of Bakersfield, Kern County, California (Exhibit 1). The site is currently operated as a gasoline and diesel dispensing service station and contains two gasoline and four diesel dispenser islands, along with an office complex. The site is surrounded by commercial operations and residential property. The facility is shown to scale on Exhibit 2. 3.0 Proiect History Dudng the winter of 1985, inventory records first detected product losses from the regular-gasoline dispensing system. In response to these losses, a pressure test was conducted on the tank and lines which indicated a leak in the regular-gasoline product lines. The suspect faulty line was repaired, but shortly thereafter, inventory records again indicated product losses. The tanks and lines were tested again on March 3, 1986 where a leak in the vapor lines was detected then subsequently repaired. On July 1987, Twin Cities Testing Corporation estimated 2,500 gallons of regular-gasoline may have been lost on site. Shortly thereafter, Davies Oil contacted KCEHSD and appdsed them of the situation. In October 1986, three (3) i0,000 gallon underground storage tanks were removed from the Davies facility because they were no longer in use. According to the KCEHSD, diesel fuel was detected in soil samples obtained during the excavation. Information generated by several prior consultants including Delta Environmental Consultants, Inc., Aegis Environmental, Inc., and Associated Soil Analysis, Inc. revealed the presence of both soil and groundwater contamination by gasoline range hydrocarbons at the subject site. A total of seventeen (17) groundwater monitoring wells, (nine (9) two inch and eight (8) four inch diameter) have been installed on-site. Additionally, there are two groundwater recovery wells, one 12-inch and one 6-inch diameter, designated as RW-1 and MW-12a. A groundwater treatment system was installed that consisted of a packed column air stripper for dissolved phase hydrocarbon removal and two carbon filters in line at the effluent port prior to discharge to an on-site infiltration gallery. During installation and operation of the treatment system in 1988 and 1989, the water table was relatively stable between 18 2 and 22 feet below ground surface (bgs). In February of 1990, the water table dropped below the bottom of the groundwater recovery well at 36 feet bgs due to regional drought conditions, rendering the remediation equipment temporarily inoperative. In November of 1988, hYdraulic conductivity tests were performed by Delta Environmental Consultants, Inc. This test was performed on RW-1 using a short duration pump test. Transmissivity was estimated to be 12,000 gpd/ft and hydraulic conductivity was calculated at 70 ft/day. A maximum plume extent was then calculated and was estimated at 1100 ft down gradient and was later confirmed by down gradient monitoring wells MW-13 and MW-14a. A soil vapor survey was conducted in November 1990 to establish the limits of hydrocarbon vapors in the soil. In January 1991, three (3) 4-inch diameter monitoring wells were installed down gradient of the plume (MW-13, MW-14, and MW-15) and one 4-inch well upgradient (MW-16) at the northern boundary of the property. Well depths ranged from 48.5 feet to 55.0 feet bgs. Groundwater analyses revealed benzene contamination above State Action Levels (SAL) in down gradient wells MW- 13, MW-14, and MW-15. Upgradient well MW-16 showed non-detect (ND) results for all analytes. MW-14 however, exhibited the highest levels of dissolved hydrocarbons due to its central position down gradient of the gasoline plume. All four groundwater monitoring wells became dry in Apdl 1991 due to a continuing decline of the water table. The deepest well was MW-13, completed to a depth of 55 feet bgs. In March 1992, four of the groundwater monitoring wells were twinned with deeper wells screened from 30 to 60 feet bgs to accommodate the declining water table. The new wells were designated MW-1 a, MW-11 a,. MW-12a, and MW-14a. All wells were completed with 4-inch Schedule 40 PVC casing and liner, except for MW-12a, which was completed with 6-inch diameter PVC casing. A pump test was conducted on MW- 12A before plumbing it to the air stdpper tower on-site. The groundwater remediation unit was apparently re-started in fall 1992, but due to Iow flow rates, high drawdown, and a continuing decline in the water table, was shut down once again a few months later near the end of 1992. The project has apparently been idle since that time. In September 1993, AGI was retained by Federated Insurance to begin quarterly groundwater monitoring, develop and implement a Remedial Action Plan. On April 4, 1994 the KCEHSD approved the Remedial Action Plan submitted by AGI. Remediation of the Davies Oil site will include vapor extraction and air sparging in wells located in the center of the plume. 4.0 Groundwater Monitorin(~ The following sections detail the methods and procedures used in conducting the field work on June 2 and 3, 1994. The field work included measuring groundwater levels, 3 purging wells, and collecting groundwater samples. The purpose of the monitoring was to assess the groundwater gradient, and the concentration, distribution, and type of petroleum constituents in groundwater. 4.1 Groundwater Elevation Groundwater elevation data was collected from Monitoring Wells MW-la, MW-10, MW- 11, MW-11A, MW-12, MW-13, MW-14a, MW-15, MW-16, and RW-1. Monitoring Wells MW-1 through MW-8 were dry with the exception of MW-la. Monitoring well MW-9 was not located. Monitoring well MW-12a was not sampled due to lack of accessibility. In those wells sampled, the depth of freestanding groundwater was measured to the nearest one hundredth (0.01) of a foot using a Solinst water level indicator. The Solinst water level indicator and attached measuring tape were washed in Alconox and rinsed prior to each use. The well elevations were surveyed by Delta Environmental Consultants, Inc. All elevations were referenced to a bench mark located near the fenced corner at the northeast end of Gulf Street. The bench mark consists of a white wood post with an elevation of 409.50 feet above mean sea level. Measurements and reference elevations were taken from the north top edge of the well casing. 4.2 Groundwater Monitoring Well Purging Three (3) to four (4) well casing volumes were removed from each well using a submersible purge pump prior to collecting a water sample. The volume of water to be removed was calculated by subtracting the depth to groundwater from the total depth of the well and multiplying by the cross sectional area of the well casing. Water temperature, pH, and conductivity were measured after the removal of each well volume. When the measurements were within 10% of previous measurements, the well was considered stabilized for sampling. The purge data sheets documenting the field results are included as Appendix A. 4.3 Groundwater Sample Collection Groundwater from each monitoring well was sampled for laboratory analyses following the purging of the well. Groundwater samples were collected by lowering a disposable PVC bailer into each monitoring well. Two (2) 40-milliliter amber VOA vials were filled with the collected groundwater sample and sealed with teflon-lined lids. Care was taken to ensure no headspace or air remained trapped within the vial or bottle when sealed. The water samples were immediately placed in an iced cooler at 4° centigrade for storage and transport. The samples were logged on a chain of custody document, and transported to Halcyon, a California certified laboratory for chemical analyses. 4.4 Analytical Results Ten (10) groundwater samples were analyzed by Halcyon Laboratories of Bakersfield, a State certified laboratory, in accordance with State guidelines and EPA protocols. The groundwater samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg), diesel (TPHd), benzene, toluene, ethylbenzene, and total xylenes (BTEX) using DHS Luft Method / 8015M and EPA Method 8020/5030, respectively. The Method Detection Limits for the laboratory analyses were 50 ug/I for TPHg, and TPHd, and 0.3ug/I for BTEX. The laboratory reports and chain of custody documents for these samples are included in Appendix B. Table 1 below summarizes the laboratory results. MW-la MW-10 MW-11 MW-11A MW-12 MW-13 MWo14A MW-15 MW-16 RW-1 Results OF GROUNDWATER SAMPLES FROM QUARTERLY MONITORING June...2..& 3, 1,994 i I t ............. i ............. i''iiii[ i ....li?i iiiiiiiii iiiiiiiiiili ai:::: :: ai 23.64 I~D ND ND 1 200 ND 23.18 ND ND ND 9 25.42 ND ND 5 290 ND ND ND 4 23.58 24.91 10 160 40' 680 25.84 3 3 2 27 24.96 2 2 22.78 ND ND 22.2 ND 4 ND 25.96 )or'ted in u~ 1 'L (ppb) TPHg = Total Petroleum Hydrocarbons as gasoline tTPHd= Total Petroleum Hydrocarbons as dieselt NDi~ NomDetect . ! .... , ! [TP~g and TPHd MDE"~ 50ug/I .... '"' 15 i 6000 ND 19000 ND 300 [ ND ' I'~'S000- ND 1 6000 ND ND ND ND ND ND ND 5.0 Discussion of Anal_vtical Results Exhibits 5 and 6 graphically show interpretations of the changing aerial distribution and concentration in parts per billion (ppb) of TPHg from March 1994 to June 1994. Exhibit 5, the March, 1994 monitoring period, shows a moderate sized plume which lies between MW-11 and MW-13. Exhibit 6, June, 1994 monitoring period, shows the plume has greatly increased in size in the up and down gradient directions. Monitoring well MW-13, in the down gradient direction of the plume, has increased in Jun, concentrations from 8,100 ppb in March, 1994 to 16,000 ppb in June, 1994 for TPH gasoline. Also, the plume has been extended in the up gradient direction with RW-1, MW-l, and MW-10 being impacted with 1,700 ppb, 200 ppb, and 6,000 ppb for TPH gasoline, respectively. Laboratory analysis for the June, 1994 groundwater monitoring period indicate that TPH as gasoline in the central portion of the plume have stabilized while volatile aromatics (BTEX) have improved since the March, 1994 reporting. Benzene concentrations range f.rom non-detect to 10 ppb. TPH as gasoline concentrations range from non-detect to 185,000 ppb. Heavier volatile aromatics (xylenes) ranged from non-detect to 680 ppb. The highest concentrations of TPH as gasoline are centered around MW-12, located at the southwest corner of the Davies Oil site. The distribution of volatile aromatics (BTEX) roughly approximates the TPH as gasoline plume. Overall, the analytical results indicate that significantly impacted groundwater continues to be present beneath the Davies Oil site. The areal extent and concentration of the hydrocarbon plume have shown a slight increase when compared to previous quarterly monitoring events. 6.0 Site Gegloay The sediments underlying the site are Quaternary alluvial and fluvial deposits consisting of unconsolidated fine- to coarse-grained sands and sandy silts (Calif. Div. of Mines and Geol., 1964~). The soil in the subsurface encountered from previous work consists of well graded to poorly graded sands and gravels to a depth of approximately 65 feet below the surface grade (bsg). 7.0 Site Hydrogeoloay Published data (KCWA, 1990'*) shows the site is located within a region of groundwater mounding. The mounding is presumably a result of groundwater recharge from large sudace holding ponds in association with a water purification plant, located approximately 1/4 mile to the northeast. The regional groundwater gradient beneath' the site is to the southwest. Previous work at the site indicated the depth to groundwater remained between 14 to 19 feet (bsg) from July 1986 to March 1989. In subsequent years the depth to groundwater progressively increased, resulting in the drying of several monitoring. wells. The continuous drop in groundwater level is believed, in part, the consequence of the prolonged regional drought conditions which existed throughout central and southern California from about 1986 to 1992. In September, 1992 the average depth to groundwater at the site was approximately 35 feet (bsg). 2 California Division of Mines and Geology, 1964, Geologic Map of California, Bakersfield Sheet ~ Kern County Water Agency, 1990, Improvement District No. 4, 1989-Report on Water Conditions 7 June 1994 Quarterly Groundwater MW-1 409.33 24.18 MW-lA 408.10 61.50 MW-2 409.31 24.30 MW-3 MW-4 MW-5 410.22 409,72 407.62 409.68 409.60 MW-8 MW-9 MW-10 23.70 23,60 23.30 24.60 NA 8-23' I 2" 23.64 DRY DRY 8.5-24.3' 2" 8.4-24.2° 2" 8,8-24.6' 2" 8.5-23.5' 2" 8.5-23.5' 2" 11.2-26.2' 2" 13.5-28.5' 2" 13.4-28.4 2" 14.4-29.4' 2" 17-47' 4" 18-48' 4" 18-48' 4" 18-48' 4" DRY DRY NA 384.46 408.12 27.00 23.18 384.94 MW-11 409.43 26.58 25.42 384.01 MW11A 407.58 N^ 23.58 384.00 MW-12 408.67 27.30 24.91 383.76 MW-12a MW-13 406.91 48.00 25.84 384.07 MW-14 408,63 NA NA NA MW-14^ 405.67 62.50 24.96 381.83 MW-15 406,79 48.50 22.78 387.00 47.5 22.2 407.5 MW-16 RW-1 388.32 410.34 35' 15-35' 12" '25.96 384.38 # Corrected Groundwater Depth CDTW=DTW - (SP.G x LHT). CDTW = Corrected depth to water DTW = Measured depth to water SP.G = Specific gravity: unweathered gasoline = 0.75, diesel = 0.80 LHT = Measured Iicluid hydrocarbon thickness. ' TABLE 2 9 8.0 Conclusiops There are a total of seventeen (17) groundwater Monitoring Wells and two (2) groundwater recovery wells located on and adjacent to the subject site. The initial ten (10) wells (MW-l, 2, 3, 4, .5, 8, 9, 10, 11, and 12) were advanced to total depths of between twenty five (25) and thirty (30) feet below ground surface. Sedimentation and silt accumulation has caused six (6) of the original ten (10)wells to become "dry" at the present groundwater elevation. The highest concentrations of petroleum hydrocarbons reported in this sampling episode were found in MW-12. The water column in all wells were essentially the same for June, 1994 as they were during March, 1994. However, flow direction has changed in the southwest portion of the Davies property which has resulted in plume expansion in the traditional upgradient direction. Analytical results show similar concentration in TPH (g) between March, 1994 monitoring of MW-12 at 220,000 ppb, to 185,000 ppb in June, 1994. 9.0 'Recommendations After reviewing previous site history and the results of three monitoring events, AGI recommends going forward with a phased remediation plan. In general, the phases would occur as follows: Install and Operate a 'lhermal oxidation" vapor extraction and groundwater sparge system. Continue monitoring groundwater to estimate potential beneficial effects of the soil vapor groundwater sparge remediation. After reviewing the data generated in the pilot vapor extraction, expand vapor extraction system to full-scale remediation. 10.0 Limitations AGI pedormed this investigation in accordance with generally accepted standards of care which exist in Central California at this time. It should be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of subsurface conditions present. No warranty, expressed or implied, is made. Exhibits I G~f Se SITE LOCATION Scale North I Ao_uaGeosciences. Inc. ' 701 Westwind Drive Suite 103 ctakersfield, California 93301 Telephone: (805) 328-0962 Fax 328-1129 Davies Oil Company 3305 1/2 Gulf Street Bakersfield, California VICINITY MAP Exhibit 1 PIERCE ROAD ~ .MW44 MW4~ Area .4~). MW- 14A [ Rush Swoap~ '_r_=_+ ' iiiiiiiiiiiiiii~?:~i~????:~i~i~::~!~i~!~i i~i~ii~¢~i~i~i~i~ ::ii?:?:iiiiiili?:i:?:?:?:i::i::i No. 87 =~I~ ~::::~?::: :: :: ~?:::::~ ::::::::::::::::::::::::::: ':~ .... ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ~ ::::::::::::::::::::::::::::::::::::::::::::: ' I ................................. ::::::::::::::::::::::::: ................... ~-12 m [ .... ) [..l~ ~1 ~-1o Davi~l~p~y Aqua~ooscion~8, Ino. DA~S ~ 70~ ~o~nd ~fivo, ~uito ~ 03 B~RS~LD, C~O~ ~e~fiold, ~ali~ornia Tel~one: (805) ~28-0902 PLOT PL~ MAP F~: (805) 3280~ ' I I ~: ~ AquaGsoscisn~s, In~. DA~S O~ COMP~ E~~ 701 W~ind Dfivs, $uita 103 B~RS~LD, C~O~ ~srsfiald, Oalifornia 93301 Gro=dwater G~ent Map 3 T0l~ons: {805) aa8-0asa for F~: (805) 3a801 ~aa Mmh 1994 AquaG~scien~s, Inc. 1701 We~nd Ddve, Suite 103 B~RS~LD, C~O~ ~kemfield, California 93301 ~o~dwamr Gra~ent Map 4 Telephone: (805) 328-0962 for F~: (805) 32801129 J~e 1994 (3~'n Spa~ I I I Storage _ _1 Steel and Supply ~.~ North Scale 1"= 125' KEY concemrafions in para-per-billion Pipe Storage PIERCE ROAD Teamsters Local Union No. 87 Rush Swoap~ Properties I I Truck Kernville Stage And Freight Open l~t I Truck Parking [ · ~ ~ Dry ~ Dry .~'~ I , T~N~ ~ ................. ' J s ' '~ ~P AquaGeosciences, Inc. 1701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA Groundwater -TPHg Concentration Contour Map for'March, 1994 EXHIBrr 5 Open Space I I Storage Area I ~ North Scale 1"= 125' Lines of equal concentrations in parts-per-billion AquaGeosciences, Inc. 1701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 ND office I MvlW- 15 ND Jim's Steel and Supply Pipe Storage KEY I~! >100,O00ppb ~ >10,O00ppb ..ERCEROAD Teamsters Local Union No. 87 Rush Swoape Properties Abamioned Privat~ WeB Truck Wash Kemville Stage And Freight I I I I I~ Fcrn~r I Und~sro~md m~-8~-~,. Dry '.. ': /200 Open Lot Track Parking Und~grou~d ~ Building .~. MW- 16 Davies Oil Company'ND Pump Infillralion Gallery DAVIES OIL COMPANY BAKERSFIEI.D, CALIFONIA Groundwater -TPHg Concentration Contour Map for June, 1994 I EXHIBIT 6 Tables ( Hist. Liquid Data 6/94 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA RW-1 I 1/2/88 1/1 3/89 3/13/89 7/2/89 410.34 23.91 385.99 0.25 20.82 389.12 0.2 21.15 388.93 0.01 27.69 382.65 7/31/89 28.55 381.79 8/24/89 29.64 380.7 9/7/89 29.1 381.24 1 0/25/89 30.22 380.12 I 1/8/89 30.71 379.63 1 2/8/89 1/4/90 2/7/90 2/1 9/90 5/31/90 7/25/90 8/1 6/90 1/11/91 4/5/91 6/15/91 12/9/93 3/30/94 30.5 379.84 31.55 378.79 31.65 378.69 6/3/94 30.31 380.03 33.1 377.24 ODOR 34.5 375.84 CDCR 35.1 375.24 ODCR 26.09 384.25 NOODOR 25.80 384.54 NOODOR 25.96 384.38 NOODOR Page 1 Hist. LiqUid Data 6/94 ' I TABEE 2 I HISTORICAL GROUNDWATER MONITORING I :.::~:...,~:'~, ~, .::..: :.~x ~.+.::: ~.".~<'~.~.~ ~,.~ · ~ .;:.:.<>.:::.. :::~. . . . · .~.< ~ ~ . . . <.-..::..~,, ::. ::: ..:.;:.., ~. ..~ :: ;.:~;..';.;:.~.:~:'.~'~- ::= :~:;.7"7~"~'.~::"~'~;<:~- ~:~ ~.',~ '~'~ ".~;;;.::~;;~. ;':;?:'"'"': ............. ::.::""~'"~i~ ~::.i~:"'"~ ~""' MW-1 7/1 1/868 409.33 24.18 14.86 394.4714" free prod. 5/8/87I la.23 391.1 I 0.5' 10/22/871 19.72 389.61 12/3/87 I 20.66 388.67 I 0.8' 3/4/88I 19.09 390.24 5/2/88I 21.24 388.09 I 0.2' ~ I 1/2/88 I 22.83 386.5 IStrong Odor i 1/13/s9I 19.93 389.38 I 3/14/89I 20.22 389.11 I 6/26/89I ah' a~ I 10/25/891 ~ ~ I 1/4/90I ~ a~ / 3/6/9OI , a~ a~ / i 1/11/91 I DRY DRY 14/5/91I a~ ~ / 6/15/91I a:{? a~ / / 9/20/93 ] a:{V a~ 12/9/93 1 a~ ' a~ / / 3/3o/94I ~ a~ / / '6/2/94 ! DRY o ~ .... ~ ........ ..:<.~ ............................... ~ ..................... ~.<..., ..,.~,,,:.~.,.~ .................................................................................. . .................. .o...~. ......... : ........................ ~.....~.~ ............................................................................. ,.,~....:..,.... ~..~ ....,> ........... .<.) .,~..~.~. ~> >,~ ....... ..,.,~,~ .~ ........ .~ ........ ., ............. .~,.~ ........... ~ ........... ~<~,,<~ ..... f.~.~.>,. ~..>.... .......... ...~-,~,..~ .......................... <......~ ........ , ......... ,, ...~.,:.....,..':::....."..'.~,'>................,......., ..~..... :,3: ~.......Y..,...~......,....<. ~.<,.,,,~.,<...,~,~..o......o.~..... ,..,.¥.~+.,.... ~........,,.:-.-<..... ......... .,,. .... ....+.. ...... . ~..,...,..+.... ......... ~,~ ...... · , ....,,...~..............>,~...,..~.......................... MW-lA 9/4/92 ] 408.1 61.5 34.98 373.12 9/2o/931 25.28 382.82 / 12/9/93 I 23.73 384.37 / ~/~o/9~I ~.~7 ~.6~ / 6/2/9~o| ...... 2?...;64 3~.4~ ~. · / Page 2 Hist. Liquid Data 6/94 TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA 7/11/86 1 2/1 9/86 5/8/87 1 0/22/87 12/3/87 3/5/88 5/2/88 I 1/2/88 1/1 3/89 3/1 3/89 6~26/89 1 0/5/8 9 3~6~90 1/11/91 4/5/91 6/15/91 9/20/93 1 2/9/93 4/1/94 6/2/94 409.31 24.3 15.02 394.29 17.87 391.44 NA NA 19.35 389.96 NOPRODUCT 20.43 388.88 OCCR 19.07 390.24 NOODOR 20.7 22.79 388.61 382.56 20.04 389.27 20.45 388.86 DRY DRY ERY ERY Page 3 Hist. Liquid Data 6/94 TABE~ 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-3 7/11/86 5/8/87 1 0/22/.87 1 2/3/8 7 3/5/88 5/2/88 I 1/2/88 1/1 3/89 3/13/89 1 0/5/89 11/9/89 1/4/90 2/7/90 3/6/90 410.22 23.7 15.37 18.34 20 20.77 19.42 21.1 394.85 391.88 390.22 389.45 390.8 389.12 22.86 387.36 20.2 390.02 20.77 389.45 DRY CRY 1/11/91 ERY 4/5/91 DRY ERY 6/15/91 DRY CRY 9/2O/93 1 2/9/93 3/30/94 6/2/94 Page 4 Hist, Liquid Data 6/94 TABEE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA 7/11/86 ~. 409,72 4/1/94 15,06 394,66 5/8/87 17.87 391.85 1 0/22/87 18,46 391.26 1 2/3/87 20,41 389.31 3/5/88 19.03 390,69 5/2/88 20,58 389.14 I 1/2/88 22,5 389.2 1/1 3/89 20,08 389,64 3/1 3/89. 20,3 389,42 6/26/89 DRY DRY 1 0/5/89 DRY DRY I 1/9/89 DRY DRY 1/4/90 IDRY DRY 2/7/90 BRY DRY 3/6/90 DRY DRY 1/11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 DRY DRY 1 2/9/93 DRY BRY 3/30/94 BRY DRY 6/2/94 DRY DRY · ~:~,,~:~.~....~.,,..: ~.,,:.-.~..-.::: :::~>~::~;.-'~::~!~.-?.~."-.~.'.~ :~:~:['"[~ '~'"'::. ~'¥:~ ~:J~'"~'.:.."."i~[~i .... .:.:.:...:........,'~ ................ ~:..'..~ ?.:.::~::~:::~'.~:~..~'.::::~:..':::: .:~:-:-:.:<.~$~x:'2.'.',.~."¢.~.-'.,',,.~,:,,:. ::::::::::.~:.'.~.:~.~.::::~'~..~.g~-~.~.~.::::~.~ ~.:::A.~:::::'-"~:::::::P.:::~"::.~.'.:.,:.'.';::::~.~:;~<~. MW-5 3/1 3~89 407,62 23,3 18,32 389,3 6/26/89 21,79 385,83 1 0/25/89 DRY DRY 9/21/93 DRY DRY 1 2/9/93 BRY DRY 6/2/94 Page 5 Hist. Liquid Data 6/94 HISTORICAL GROUNDWATER MONITORING I LIQUID LEVEL DATA I / i ........ ~. ................................ · ............. .,..,,~.~.....~....,.~,~<..,,..~. ..... ,,...o. ~....~.1.~..~,,~,,. ...... ,.,~...<..~.~,!.., ........ ,. ...... ,.~,,..,,,-~ ...... ~....~ ..... .,,,, ........... . ....... ~--~..~ ............ o .... ,~.~...,.,.,.~i": .........~:~ ~ I~ ~i~iii~iil~ ~ '"i!~J~!i~:~ ........ i .......~ ~: '~.~:" ;'? ' ~.%"~i ....................... ~'~.~"~'"i~!i~!~ ................. ,MW-, s~x"~/ ~°~'e" I ~'e I ~ I ~'s~ I I ~'0/22/87/ I I ~9.6 I 390.08 i I ~/2/88/ I I a:~ I ~ I I ~/~/~e/ I I ~ I ~ I I 3/~3/89/ I I 20.7 I' 388.98 I I "6/26/89] I I ~ I ~ I I ~0/S/89 / I I m,,' I ~ I I ' ~/4/90/ I I m',' I ~ I I 2/7/90] I I ~ / [~ / I ' 3/6/9°l I I ~' I ~ / I ' ~/~/9~ / I I ~ / ~ / I i 4/s/9~/ I I [:r,, / ~ / I 6/~5/9~/ I I ~ / [:r,' / I 9/20/93 ]. I I ~ / [~ / I ~2/9/93/ I I ~ / ~ / I 3/30/94 ] J I a~ / e~' / I s/2/94 / I I a~' / a~, [ I Page 6 Hist. Liquid Data 6/94 , ' I TABLqE 2 I HISTORICAL GROUNDWATER MONITORING I / LIQUID LE .~.EL DATA uw-9 I s/8/871 40~.~ I I lS.37 I 391.23 1~°/22/871 I I 17.38 I 389.22 · · 1~2/3/871 I I ~8.12 i 388.48 ) 15/2/881 I ( 18.28 I 388.34 I 1/13/89 I ) ) 17.87 I 388.72 I ') 3/13/89 I I I 18.2 I388.4 I 8/2~/891 I ! m,, I ~ I ~0/5/~ I I I ~ I ~ I ~9~89 1 I I ~ I ~ I ~/~/9°1 I I ~ / ~ I 2/7/9'°1 I I ~ /' I ~/s/~°l I I ~ / ~ 1~/5/9~1 I I ~ / ~ I S/~s~9~l I I ~ / ~ I 1 2/9/93 I I I Can't I~ate / Can't locate I a/~ o/9 ~ I I I c~.'t ~t~ / c~.'t ~oc~t~ l 6/2/94 / ~ ............ L~an't I~te / Can't Io~te / / I ' I s/~/se/ / / 19.28 I 389.04 J 11/2/88 ) / / 21 I 387.12 1~91 / / ~8.~ I 38~.7~ 1~3~891 / / ~.8~ I ~9.~ 1~/28/891 / / 22.52 I 385.s ' , 17~7~91 / / ~3.2 I ~4.9~ I ~0/5/89 1 / / 2~.83 I ~8~.59 1~9°/ / / 2~.~ I ~.7 , I 2/7/90/ / / 27.09 I 3s~.03 I ~/~/90/ / / ~ I I ~/11/9~/ / / ~ I 1~5~9~/ / / ~ I 1 9/2~/931 '/ / ~.72 I 3~3.~ / ~2/9/93 I / / 2~.3~ / 38~.~ / 3/30/94 I / / 23.14 I 384.98 / 6/2/94[ / / 23.18 I 384.94 Page 7 Hist. Liquid Data 6194 HISTORICAL GROUNDWATER MONITORING / LIQUID LEVEL DATA 1 ~o.~ ........... ~o.,,~. ............. .~ ........ .,.,,...4.~....~.~. ....... ~. ......... ,..,L~.~,.,.~., .,,~,~..,~.,,.,,[.~,~ ......... ,~.~..~ ............... ~ ....... ~ ~ ............... .~ .................. ~. ........... :,:., :.'. ............ i! ............... i~.~i!~l~!"'".'"'"~ .... ~i,~i~:~l ................ .~?:~ · ~ ,'.~.,;!~.~i~!~~~.,.~' ............ .'ii~ ..... ~i~!~ii? i, ......~ ...... ~i ................ -',. ~..-:.,...'. ........... .~ ..... ~::~ : ~.~.,.,:.~.~ ....... ~. :~ ..... ~ ~ ~:;~.~::.:~:W~..,..:.:~ ........ 1 ~- .:.., ~.:.:-:....~.:.:.,,:.:~ ............. .,..'.:..~ .................. · : ~u: ~J::': '~ .~/:::..~.q.'.~ :::::.'.:::::~ .:.. ~.:: '.x ""<::~.:: Mw-aa o/s/aa/ 409,43 I 26,58 I 19,23 I 090,2 11/2/88 / I I 23.57 I 385.56 0.75 free pro. : 1/13/89] J I' 20.62 I 388.81 0.5' 3/13/89 / I I 20.63 I 388.8 0.3' 6/26/89/ I I 24.37 I 385.06 0.01' 7/27/89/ I I 25.95 I 384.24 1.02' 10/5/89 / I I ~ / a~ ,smomOCX> 1/4/9o / I I a~ I a~ STF~,GOC~ 2/7/90 / I I mr / mr I~OOO~ 3/6/90 / I I CRY /' DRY ' ' 4/5/91/ I I ~ / .a~ , 6/15/91/ I I ~ / a~ 9/20/93 / I I CRY / DRY !STI:iONG ODOF 12/9/93 / I I 25.55 / 383.88 STRONG~ ~ 3/30/94/ I I 25.19 / 384.24 6/2/94 ..[ ..~ ............. I ...... 25.42 '[ 384.01 $1HO6~OOOF '"'< :::' ~:~:' '"':'"'~ .' ;'""" ':' ', +."" '~:~".'"->'~" '"'>'> "'""'~":':~ ..'::: ' ~'~ ,-~ ~i'.' :+ · '~.,:' ',' ,:;.~.:~,,'"~'," "~<' ~. <'."~'"~'~',~ ::: ..... ~ .............................................. · .............. ,.. ............................................... ~i:.:~.:..~ ~ .................... .,........<< ................................................................................ ~::.,..,.:~. ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: aW-il^ 9/4/92/ '407.58 I I 34.8 I 372.78 12/9/93 / I I Not sampled I Not Sampled a/3°/94/ I I 23.39 I 384.~9 . . 6/2/94 / / / 23.58 I 384.00 Page 8 Hist. Liquid Data 6/94 HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA ;:::,.: ~;.~ .~:~ .~'...';.~ .~.:.~.~ :..:::::.::~: ....... :.':.-:~.:, :., ....... ~-.... . .~....~,. . ~.~ .~-.~ ~. ........... .,~ .... MW-12 315186 408.67I 27.3I 18.62 / 390.05 sma,~oom 5/2/88 I ~ 20.16 / 388.51 sua-iToooR 11/2/88 I ~22'86' / 385.81 0,5' free prod i 3/13/89 I ~20'02 / 388.65 0,1' 6/26/89 I ~24'54 / 384,77 0,94' 7/27/89 I ~25'39 / 384,05 1,02' . 10/5/89 I ~ 26,6 / 383,08 0,35' 2~7~90 [3:{? 3/6/90 DRY DRY ' 4/5/91 DRY ~ · 9/21/93 26.83 381.84 12/9/93 | ~25.13 | 383.54 4/1/94 I ~24'68 / 383.99 612194 /~24'91 / 383'76 I ~w-13 1/10/91 409.91/ 48 I "^ / "^ 6/15/91 ' DRY DRY 9/4/92 40.94 368.97 9/20193 / ~29.21 /380.7I .... ~ 6/2/94 . / ............... [ ......... 25.84 / 384.07 M~'":I~'~ 111~T~' 4o8.63I ! NA I N^ / 6/15/91 DRY 12/9/93 . Not Sampled Not Sampled 3/3 o/9 4 I ! .or Sa~ed I ,or S~,~pled I 6/2/94 | [ Not ,Sampled | Not Sampled MW-14A 9/4192 406.79I 62.5 / 41.25 I 365.54 9/20/93 I I 28'6 I378'19 " 1 2/9/93 ! / 25.84 J 379.83 " 3/29/94 '/ / 24.64 I 382.15 6/2694 I J 24.96 J 381.83 Page 9 Hist. Liquid Data 6/94 TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL DATA MW-15 1/10/91 409.78 48.5 NA 4/5/91 6/15/91 9/4/92 9/20/93 1 2/9/93 3/29/94 6/2/94 MW-10 914192 9/21/93 1 2/9/9 3 3/30/94 6/2/94 DRY DRY ERY DRY 40.15 369.63 27.65 382.18 25.32 381.47 24.43 385.35 22.78 387.00 410.52 32.28 378.24 23.38 387.14 22.25 385.25 22.18 388.34 22.2 388.32 Page 10 Hist. Analytical 6/94 I TABLE 3 I HISTGRICN. ~NDWATER MONITORING ANALYTICAL DATA ............................................ ~.~.'""?~ . ~ ..... ~ ................ 1 ..................................... ..... ~ '~'^'"~""~':' ~':'~ ~::~ ~'. ,~ :::~:~ ~ .... ,~ ..... s. :.~ .~..~: .~....ss:.,..:...: ~:~ ~:~:~ ~:~ ~:~ ~ ~?:~ .~ ~:~:~ ...... ~:.::~¥~:~:~ ~[[~[[[~[~'~'..~'~[~[~}~[~[~[~:~?:'~:~:~:~ ~:~ ~-1 1 2/9/93 ~ I ~ ~ ~ 3130/94 ~ I ~ I ~ MW-1 518/87 ~ ~ ~ ~ ~ 1 0/22187 ~ ~ ~ ~ ~ 314/88 ~ ~ ~ ~ ~ 3~i 4~89 I ~ ~ ~ ~ ~ 3/1/90 ~~ ~~ ~~ ~~ ~~ 4/5191 ~~ ~~ ~~ ~~ ~~ 6/15/91 ~~ ~~ ~~ ~~ ~~ 9120/93 ~~ ~~ ~~ ~~ ~~ 1219/93 ~~ ~~ ~ ~ ~~ ~~ 6/2/94 ~~ ~~ ~~ ~~ ~~ D~ MW-lA 9115/92 1 2 120 NA 120 NA NA 9/20192 ~ 7 I 8 1300 1 2/9/93 ~ 4 ~ ~ ~ 3130/94 ~ I ~ 2 ~ 612/94 ~ ~ ~ I 200 MW-2 7/11/86 400 310 ~ l. 550 11000 NA 1 2/19186 9 120 ~ 330 930 NA 518/87 89 <0.5 <0.5 89 4100 <1 1 0/22/87 5 22 <0.5 12 ~ 13000 3/4188 1 3 2 5 39 1300 3/14/89 5 20 <10 20 4000 I O/5/89 ~~ ~ ~~ ~~ ~~ D~ 311/90 ~~ ~E ~ l ~~ ~E 415191 ~~ ~ ~~ ~~ ~~ 6/I 5/91 ~~ ~ ~~ ~~ ~~ D~ 9120193 ~~ ~ ~~ ~~ ~~ D~ 1 2/9/93 ~~ ~ ~~ ~~ ~~ 4/1/94 ~~ ~ ~~ ~~ ~~ D~ 612194 ~~ ~ ~~ ~~ ~~ D~ FLH I FI~ Uquld Hyd~ns NS ~ Not ~pl~ J l ND - Below ~e I~l~t~ det~ Iim~ ~ I~ In the ~ ~rato~ re~s. I Page 1 Hlsl. Analytical 8/94 I TABL~ 3 I HISTORICAL GROUNDWATER ANALYTICAL DATA ~ .................... MW-3 7/11/86 43 110 NA 170 6100 I~) 5/8/87 0.9 <0.5 <0.5 <0.5 354 6.2 ,,, 1 0/22~87 <1 3 I I 12000 3/4/88 <0.1 <1 <1 <1 I~) 29000 3/14/89 <0.2 <2 <2 <2 600 I~) 1 0/5/89 DRY W~LL DRY'WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELI~, DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY'WELL 611 5/91 DRY WELL DRY WELL DRY WELL. DRY WELL DRY WELL DRY WELL 9/20/93 DRY~ DRY WELL DRY~ DRY WELL DRY WELL DRY WEI.L 12/9/93 DRY WELL DRY WEI. L DRY Wl~.L DRY WELL DRY'WELL DRYWEI I 3130194 DRY WELL DRY WELL DRY WELL DRY WI=I t DRY WELL DRY WELL MW-4 7/11/88 !~) I~) NA !~ ND NA 5/8/87 1,8 7,8 <0,5 5.2 22 <1 1 0/22/87 0,1 <1 <1 <1 <50 ND 3/4/88 <0.1 <1 <1 <1 <50 ND. 3/14/89 <0.2 <2 <2 <2 <50 ND 1 0/5/89 DRY WELL DRY WELL DRY WELL DRY WI=I I DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WFI I DRY WELL DRY WELL 4/5191 DRY WELL DRY WELL DRYW~ I Di~' W~ I DRY WELL DRY WELL 6/1 5/91 DRY WELL DRY WELL DRY WELL DRYW~ I DRY'WELL DRY WELL 9/20/93 DRY WELL DRY WELL DRY W~I I DRY WFI I DRY WELL DRY WELL 1 2/9/93 DRY WELL DRY WELL DRYW~ I DRYW~; DRYWELL DRY WELL MW-5 9/20/93 DRY WELL DRY WELL DRY WI=I I DRY WELL DRY WELL DRY WELL 12/9/93 DRY'WELL DRY WELL DRY WI=I I DRYWELL DRY WELL DRY WELL 4/1/94 DRY WELL DRY WELL DRYW~ ! DRY WELL DRY WELL DRY WELL ~.~::.::.~..¢:¢:~:.~..~:~::~::~:::::::::~.:.::~: .... ~ ~ !~:~.~.~¥..::::.~:.:~.~..:.:~..:~..::~.~::..~:.: ~~ '-:'.'.'.'~ ..~ ...,.~.....~. ::::::::::::::::::::::::::::::::::::::::::::::::::::::: ::: :-:~: ~: ~:~.~i: :~:: ::::: ::::' :'::'~:~:~ FLH = Floatir~l Uquid Hydrocarbons :NS = Not Sampled J NA = Not Analyzed I ND = Below the Indicated detectio~ limit as labeled in the anal)~ical Laborator~ reports. __ _ p~e2 Hist. Analytical I TABLE 3 I HISTC)RIC~ GROL~DWATER MGN~NG ANALY'I'K~AL DATA ::':.~': '":::'"~":'"?i''''~'^'~'~ ·: ~: :i:~:~:i:~i~¥'"'::'"'"~"^~'~ ~:~i :::::::":'~' "'i!':':'" "'""~'"'"" '""~'^ ~' MW-8 5/8/8 7 <0.5 <0.5 <0.5 <0,5 <0.5 <0.5 1 0~22~87 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 3/4/88 <0.1 <0.1 <0.1 <0,1 <0.1 <0.1 311 4/89 <0.2 <0.2 <0.2 <0,2 <0.2 <0.2 1 0/5/89 DRYWELL DRY WELL DRYW~ ~ DRYWELL DRY WELL DRY WELL 3/1/90 DRywEI I Df:IY W~_[.L DRY W~! I DRY WELL DRYWEI I DRY WEII 1111/91 DRYWELL . DRYWELL DRY~I DRYWELL DI:IYWEll Dt:IYWEll 41519 i ' DRY WEU. DRY WEl l DRY W'~ I DRY WELL DRY WELL DRY WELL 9120193 DI:iY WELL DRYWEI l DRy WI=I I DRY WEU. DRYWEI I DRY WELL 3130194 DRY WELL DRY WELL DRY W~I I DRY WELL DRYWEI I DRY WELL 612194 Dt:~( WELL DRY WF_U. DRY WI::I I DRY WE~. DRY WELL DRY WEII IdW-9 5/818 7 1155 3810 1740 15380 33400 <1 1 0~22~87 1 0 1600 2200 37000 170000 I~) 3/4/88 40 1100 3600 28000 70000 3114189 31 120 2200 11000 56000 I'~ I 0/5/89 DRY WELL DRY WELL DRYV~ ~ DRY WELL DRY WELL DRY WELL 311/90 DRYWEI I DRY WELL DRYW~ I DRY WELL DRYWELL DRY WELL 4/5/91 DRY WELL DRY WEl l DRY Wf:I ~ DRY WELL DRY WEl l DRY WELL 6/15191 DRywEI I DRYWELL DRYW~ I DRYWELL DRYWELL DRY WELL 9120193 NA NA NA .. NA NA NA 1 219193 NA NA NA NA NA NA 3130194 NA NA NA NA NA NA 6/2/94 NA NA NA NA NA NA MW-10 314188 2.2 <1 <1 2 <50 kD 3/14/89 <0.2 <2 <2 <2 <50 kD 1015189 <0.2 <2 <2 <2 <50 ND 3/1/90 DRy WEII DRY WELL DRYW~ I DRYWELL DRYWELL DRY WELL 415191 DRVWELL DRYWELL DRYW'~I I DRYWELL DRYWELL DRYWEl l 6/15/91 DRY~ DRY'WELL DRYW~ ~ DRY~ DRY WELL DRY WELL 9/20/93 kD ND kD kD kD kD 1219193 kD ND kD kD kD kD 3/30/94 kD 1 I 7 kD kD 6/2/94 ~D kD ND 9 6000 kD ~,~ ~ .~.:.~:.::~. ~E.e":"'.'. .......... ~',"::~".".' .................. <'""':":'.":"~"-'."~' :~:::::.;.'::.'::::..':.'.::':::':~::::!~:.+..:.~;~:.::..':~:..".~:~:~:!:~.i FLH =. Floating Uquld Hydrocarbons NS - Not Sampled NA - Not AneJyzed ND - Below the Indicated detectio~ limit as labeled In the anal~ical Laboratory reports. P~e3 I HISTCXaicAL GROUNDWATER .l~e~~ ~ ANALYTICAL DATA o ' I 3~4/88 10000 89000 3200 37000 240000 ND ! 3/14/89 J FI.H FLH FLH FLH FU-I FLH 10/5/89 [ FLH R.H FLH FLH FLH FLH ! 3/1/90 J DfTYWELL DRY'WELL DRYWELL D~t'VV~I DRY'WELL DRY'WELL 1/11/91 [ DRYWELL DRY WELL DRY WELL DRYVV~ ! DRY WELL DRY'WELL ~ 4/5/91 I DRYWELL DRY WELL DRY WELL DRYW;I ! DRYWELL DRY WELL 6/15/91 I DRYWELL DRYWEU. DRYWa. L DerrWELL DRYWELL DRYWEU_ 9/20/93 J DRYWELL DRYWELL DRY'WElL DRYWELL DRYWELL DRY'WELL 12/9/93,~ 27 280 220 630 i 4300 ; ND 3/30/94 I 10 120 70 4800 120000 ND MW-11A 9/15/92 1.3 17 NA 75 NA NA 9/20/93 I NS NS ~ NS NS . NS NS 12/9/93 NS NS NS NS NS NS 3/30/94 ND ND ND 9 ND ND 6/3/94 ND ND 4 ND MW-12 3/4/88 600 4200 3700 42000 100000 ND 3/14/89 FLH FLH FU-I FLH FLH FLH 10/5/89 FM-I FLH FLH FLH FLH FLH 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WEU. DRY WI=ll DRY WELL DRY WELL DRY WELL 4/5/91 DRYWELL DRY WEM. DRYWf=I I DRYWELL DRYWELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WE[J. DRYWELL DRY WELL 9/20/93 230 2800 620 1300 150000 ND 12/9/93 30 1200 1200 6700 39000 ND 4/1/94 70 780 920 5100 220000 ND 6~3~94 1 0 160 40 680 185000 NA MIN-13 1/11/91 2 1.2 1.2 0.8 <50 <50 415191 DRY WELL DRY'WELL DRY WELL DRY WI=! I DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/15~92 ND ND NA ND NA NA 9/20/93 5 12 I 59 12000 ND 12/9/93 8 9 4 ND ND ND 3/30/94 9 9 ND 230 8100 ND 6/2/94 "3 3 2 27 16000 ND MW-14 1/11/gl 30 3.6 42 32 1100 <50 4/5/91 DRY WELL DRYWELL DRY WELL DRY WELL DRYWELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/30193 NS NS NS NS NS NS 6/2/94 NS NS NS NS I ' FLH = Floating Uquld Hydrocarbons NS = Not Sampled NA,, ,- Not Analyzed ND - Below the indicated detection limit as labeled in the analytical Laboratory reports. P~e4 H~ GFII2UNDWATER IVI(::~I~ ANALYTICAL DATA 2-,, .::~,:...~¢ - ~ ~ ~:~ ! ,. ., .:.?,, e.'~. ',,..~,.:..:..t MW-~4A IO/45/o2 1.e ~ I HA / I9/~°/9a ~ ~ I I3/2°/°4 ~ ~ I ............... I ....... 6/2/94,. 2 ~ ............... I .... ~..' ,~,+:. '~.: ...%:. ~ ~:~4.:-:.:.'4.: .~4..4..~,~4.~:~%~** ~ .'4~..*=~.~.~:~.: .:.. ...~4...:,~%4¢::¢¢:~ MW-15 1/11/91 1.5 1.1 / 1 / 0.5 . <50 <50 6/15/91 ~~ ~ / ~~ I9/~s/°2 ~ ~ / NA / ~ NA NA I0/20/03 ~ ~ / I 12/9/93 ~ I / .'I3/20/04 ' ~ ~ / ~~ ~'~ <0.1 <~5 I <0.5 I <O.S <50 <50 I 4/5/91 NA NA I NA I NA NA NA I 6/1S/01 NA NA I NA I NA NA NA I°~s/°2 ~ ~ I NA I ~ .A NA ~ 9/20/93 ~ ~ I I12/~/°4 ~ ~ I I3/3°/04 ~ ~ I NA - Not ~z~ ,. NS ~ ~t ~ ND - ~low ~e I~l~t~ d~ Iim~ ~ I~ in t~ ~ ~r~ re~s. P~e5 Appendix A Groundwater Purge Data Sheets qua eosclences, Inc. 1701 Westwtnd Drive, Suite 101 * Bakemfleld, C_.alffomia 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA 5AMPLE ID OR WELL NO.: RW-1 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/3/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: 25.96 TOTAL DEPTH OF WELL: 36.5 WELL DIAMETER: 12" CASING VOLUME: 61.9 METHOD OF PURGING: KY PURGE PUMP OEPTH CUM. VOL. WELL (GAL) PUMPED 10 20 30 40 pH (UNITS) SEC SAMPLE (pmhos/ CON'mOL cra) NO. 7.38 337 7.35 339 7.35 339 7.24 343 7.23 336 REMARKS (COLOR, TURBIDITY, ETC.) STRAW COLOR, NO ODOR STRAW SLIGHT PETROLEUM ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR .CLEAR, NO ODOR 50 60 70 8O 90 · 7.18 338 7.10 335 7.11 338 7.29 339 30' 30' 110 ,pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01[pH 7.0 TEMP *C I INSTRUMENT READING pH 10.01 346 7.24 342 7.20 339 SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP *C INSTRUMENT READING, , I [ SAMPLED AT CLEAR, NO ODOR FT. FINAL DEPTH TO WATER 25.96 FT. 3 CASING VOLUMES -- 186 GALS. NOTES: 1701 We~twtnd Drive, S~i~ 101 · Bakersfield, California 93,301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-lA PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: 23.64' 61.50' 11 24.61 KV PURGE PUMP INTAKE CUM. VOL, WELL DEPTH (GAL) PUMPED 30' 30' $ 10 15 pH (uNrrs) 7.62 7.27 7.14. SEC SAI~IPLE (piT'os/ CONTROL cm) NO, 339 336 34.2 2O 25 30 7.12 339 30' 7.06 339 30' 6.98 339 6.99 338 6.99 338 30' 35 30' 40 30' 30' 50 336 6.99 337 pH CALIBRATION / STANDARDIZATION INSTRUMENT READING ! I I · I , SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C ,. INSTRUMENT READING SAMPLED AT 25.5 FT. FINAL DEPTH TO WATER. 27'.2 REMARKS (COLOR, TURBIDITY, ETC.) SLIGHT SEWER ODOR RUSTY COLOR CLEAR SLIGHT SEWER ODOR CLEAR SLIGHT SEWER ODOR CLEAR SLIGHT SEWER ODOR CLEAR SLIGHT PETROLEUM ODOR CLEAR SLIGHT PETROLEUM ODOR CLEAR VERY SLIGHT ODOR CLEAR VERY SLIGHT ODOR CLEAR, NO ODOR CLEAR, NO ODOR J6868 J 586401 FT. 3 CASING VOLUMES = 73.8 GALS. NOTES: 171)1 Westwtnd Drive, Suil~ 101 · B~kersfield, ~omla 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: Nw-1 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: DRY WELL SEC SAMPLE pH 0~nhos/ CONTROL CUM. VOL. (UNITS) (GAL) PUMPED cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING ' SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: GALS. WATER QUALFI"Y SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-2 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: DRY TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: CUM. VOL, WELL DEPTH (GAL) PUMPED pH (UNITS) SEC SAMPLE REMARKS (pmhos/ CONTROL cm) NO. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING . SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT __ __ FT. FINAL DEPTH TO WATER 1413 FT. 3 CASING VOLUMES -- NOTES: GALS. 4. C.~wal~m- E<tentt~l~ * Envtronmen~l Con~tan~ 1701 Westwtnd Drive, Suite 101 · Bake~d, California 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-3 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: DRY WELL TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: INTAKE CUM. VOL, WELL (GAL) PUMPED SEC SAMPLE REMARKS' pH (yrnhos/ CONTROL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM ~ 25° C TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER 1413 6868. 1586401 FT. 3 CASING VOLUMES = NOTES: GALS. 1701 WesL'w~d DrLve, S,~te 101 · BaJ, cersBeld, CaJ~omla 9330! WA I I:K I.J. UALI I !' ,,~AMl"LINb AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-4 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: DRY WELL :INTAKE CUM. VOL WELL DEPTH (GAL) PUMPED SEC SAMPLE pH (/~nhos/ CONTROL (UNITS) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION -TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER __ FT. 3 CASING VOLUMES = NOTES: GALS. Aqua eosclences, Inc, 1701 Westwind Drive, Suite 101 · l~ket~eld, ~ 93301 WATER QUALITY SAMPLING~ RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-5 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: DRY WELL SEC SAMPLE pH (,An'nh c~/ CONTROL INTAKE CUM. VOL. (UNITS) cra) NO. DEPTH (GAL) PUMPED REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION/JMHOS/CM Q)ZS° CI 74 TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: GALS. 1701 We~twtnd Drive, Suite 101 · Bake~/teld, Califm'n~ 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-II PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: DRY WELL 24.6' SEC SAMPLE pH O.'rnhos/ CONTROL INTAKE CUM. WELL (UNITS) cm) NO. DEPTH (GAL) PUMPED REMARKS (COLOR, TURBIDITY, ETC.) 131-1 CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION , INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER ~___ FT. 3 CASING.VOLUMES = NOTES: GALS. qua eosclences, inc. 1701 W~twl~d Drlw. E~fl~ 101 · B~'~tdd~ ~ ~3301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-10 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: 23.18' TOTAL DEPTH OF WELL: 27.0 WELL DIAMETER: 2" CASING VOLUME: .6234 METHOD OF PURGING: INTAKE CUM. VOL~ WELL DEPTH (GAL) PUMPED .5 25' 1.5 25' 2.5 25' 3.5 25' 4.5 25' 5.5 pH (UNITS) SEC SAMPLE REMARKS (#rnhos/ CON'I~OL cm) NO. (COLOR, TURBIDITY, ETC.) 8.5 45Z 8.25 444 8.05 442 7.79 438 LIGHT YELLOW NO ODOR LIGHT YELLOW NO ODOR LIGHT YELLOW NO ODOR LIGHT YELLOW NO ODOR 7.76 439 436 LIGHT YELLOW NO ODOR LIGHT YELLOW NO ODOR pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING ,, SAMPLED AT 23.68 FT. FINAL DEPTH TO WATER . FT. 3 CASING VOLUMES = NOTES: 1.88 GALS. Aqua eosclences, Inc. 1701 We~twtnd Drive, 5ul~ 101 * B~.e~ld, ~'alt~mta 93301 WATER qUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-11 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: 25.42' TOTAL DEPTH OF WELL: 26.6 WELL DIAMETER: 2" CASING VOLUME: :19 METHOD OF PURGING: BAILER INTAKE CUM. VOL, WELL DEPTH (GAL) PUMPED 26.1 .1 26.1 .2 .3 .4 SEC SAMPLE REMARKS (prnhos/ CONTROL cra) NO. (COLOR, TURBIDITY, ETC.) 26.1 .5 7.36 587 602 6.99 488 6.84 583 6.42 601 .6 6.82 599 26.1 .7 6.83 572 CLOUDY STRONG PETROLEUM ODOR CLOUDY GREY STRONG PETROLEUM ODOR CLOUDY GREY STRONG PETROLEUM ODOR CLOUDY GREY STRONG PETROLEUM ODOR CLOUDY GREY STRONG PETROLEUM ODOR CLOUDY GREY STRONG PETROLEUM ODOR CLOUDY GREY STRONG PETROLEUM ODOR pH CALIBRATION / STANDARDIZATION SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCLSOLUTIONpMHOS/CM~25'Cl 74 I 718 ! 1413 TEMP °C INSTRUMENT READING SAMPLED AT 26.1 FT. FINAL DEPTH TO WATER 26.0 6868 586401 __ FT. 3 CASING VOLUMES = .58 __ GALS. NOTES: WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-1 lA PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6~2~94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: 23.58' TOTAL DEPTH OF WELL: 63.84' WELL DIAMETER: 4" CASING VOLUME: 26.17 METHOD OF PURGING: KV PURGE PUMP 9:29 iNTAKE CUM. VOL, WELL :DEPTH (GAL) PUMPED 30' pH (UNITS) SEC SAMPLE REMARKS (jJmh os/ CONTROL cm) NO. (COLOR, TURBIDITY, ETC.) .5 8.39 306 5 8.1 299 10 7.81 300 15 7.8 300 20 7.65 300 25 7.61 298 30 7.48 298 35 7.2 291 40 291 45 8.2 315 50 295 55 297 60 292 65 291 70 292 75 293 STRAW COLOR MED. PETROLEUM ODOR STRONG STRAW COLOR MED. SEWER/PETR. ODOR STRONG STRAW COLOR MED. SEWER/PETR. ODOR CLEAR, LT. SEWER ODOR CLEAR, LT. SEWER ODOR CLEAR, LT. SEWER ODOR CLEAR, LT. SEWER ODOR CLEAR, LT. SEWER ODOR CLEAR, VERY SLT. PETR. ODOR pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 25.6 FT. FINAL DEPTH TO WATER 1413 24.1 I6868 ]586401 FT. 3 CASING VOLUMES = 78.5 GALS. NOTES: WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-12 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: 2" CASING VOLUME: .4 METHOD OF PURGING: 24.91' 27.30 BAILER DEPTH 26' 26' CUM. VOL. WELL (GAL) 'PUMPED pH (UNITS) SEC SAMPLE O.m~hos/ CONTROL cm) NO. 0.1 7.23 485 0.2 7.O9 518 7.15 49 0.:3 , 0.4 7.08 515 0.5 7.08 511 REMARKS (COLOR, TURBIDITY, ETC.) CLOUDY COLOR MEDIUM ODOR STRAW COLOR STRONG PETR. ODOR STRAW COLOR STRONG PETR. ODOR STRAW COLOR STRONG PETR. ODOR STRAW COLOR STRONG PETR. ODOR pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCL SOLUTION pMHOS/CM @ 25° C 74. ,,, I ,~,, I,~,~ I,~,401 I TEMP °C INSTRUMENT READING ] I I SAMPLED AT FT. FINAL DEPTH TO WATER 24.89 FT. 3 CASING VOLUMES = NOTES: 1.2 GALS. qua eosclences, inc. 1701 We~twtnd l~ve, Sull~ 101 · Bakersfield, California 93301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-13 PROJECT' NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: 48' WELL DIAMETER: CASING VOLUME: 14.4 METHOD OF PURGING: Z5,84' 30' 30' SEC SAMPLE REMARKS pH (pmhos/ CONTROL CUM. VOL. WELL (UNITS) cra) NO. (COLOR, TURBIDITY, ETC.) (GAL) PUMPED 5 6,98 383 MODERATE PETR, ODOR STRAW COLOR 10 6,97 391 MODERATE PETR, ODOR. STRAW COLOR 15 6,94 404 MODERATE PETR, ODOR STRAW COLOR 20 7,01 410 MODERATE PETR, ODOR STRAW COLOR 25 6,93 413 CLEAR MOD, PETROLEUM ODOR 30 6,93 41Z CLEAR MOD, PETROLEUM ODOR 35 418 CLEAR MOD, PETROLEUM ODOR 40 6,99 416 CLEAR MOD, PETROLEUM ODOR 45 413 CLEAR · MOD.. PETROLEUM ODOR pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C . INSTRUMENT READING SAMPLED AT 25,84 FT. FINAL DEPTH TO WATER 25,92 FT, 3 CASING VOLUMES = NOTES: 43,Z GALS. 1701 Westwtnd l~v~, S~lte 101 · B~kex~telcl, f".~ltfoml,~ 93301 WATER QUALITY 5AMHLII~.~ RI:.~,.UI~U AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-14 A PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: 4" CASING VOLUME: 24.4 METHOD OF PURGING: 24.96' 62.5' INTAKE CUM. VOL. DEPTH (GAL) PUMPED zg' 5 29' 10 SEC SAMPLE O.m~hos/ CONTROL cm) NO. 333 337 REMARKS (COLOR, TURBIDITY, ETC.) CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR 29' 29' 15 20 25 339 339 340 340 · 30 29' 35 338 29' 40 342 29' 45 344 29' 55 339 60 6.95 339 GALS. pH CALIBRATION / STANDARDIZATION 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT Z4.96 FT. FINAL DEPTH TO WATER 25.1 FT. 3 CASING VOLUMES = 73.2 NOTES: t-xqua eo 3cle nce b l tc. 1701 We~twtnd Drive, Sui~ 101 · Beker~leld~ CMulfom~ 93,301 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: MW-15 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: 22.78' TOTAL DEPTH OF WELL: 48.5' WELL DIAMETER: 4" CASING VOLUME: 16.72 METHOD OF PURGING: KV PURGE PUMP INTAKE CUM. VOL, NELL DEPTH (GAL) PUMPED 30' 5 30' 30' 30' 30' pH SEC SAMPLE (/,/mhos/ CONTROL cra) NO. 7.44 358 10 7.11 360 15 7.08 370 20 7.12 388 25 7,06 385 30 7.05 390 35 7.11 360 40 7.21 378 45 7,08 364 50 7,13 372 REMARKS (COLOR, TURBIDITY, ETC.) CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR CLEAR, NO ODOR 30' 30' 30' 30' pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01, pH 7.0 pH 10.01 I 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 26 FT. FINAL DEPTH TO WATER 25.21 FT. 3 CASING VOLUMES = 50.2 GALS. NOTES: WATER QUALITY SAMPLING RECOF, U AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: Mw-16 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/2/94 SAMPLED BY: THOMAS CLEARY DEPTH TO WATER: 22.20' TOTAL DEPTH OF WELL: 47.5' WELL DIAMETER: 4" CASING VOLUME: 16.4 METHOD OF PURGING: KV PURGE PUMP SEC SAMPLE . REMARKS pH (./.n'nhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) cra) NO. (COLOR, TURB~Dn'Y, ETC.) DEPTH (GAL) PUMPED 30' 5 211 CLEAR, NO ODOR 30' 10 224 CLEAR, NO ODOR 30' 15 226 CLEAR, NO ODOR 30' 20 228 CLEAR, NO ODOR 30' 25 223 CLEAR, NO ODOR 30' 30 6.97 230 CLEAR, NO ODOR 30' 35 6.92 229 CLEAR, NO ODOR 30' 40 6.89 222 CLEAR, NO ODOR 30' 45 7.01 223 CLEAR, NO ODOR 30' 50 6.93 221 CLEAR, NO ODOR pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01 pH 7.0 I:)H 10.0 'TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING , SAMPLED AT Z2.18 FT. FINAL DEPTH TO WATER 22.2 FT. 3 CASING VOLUMES = 49.3 GALS. NOTES: Appendix B Chain of Custody and Analytical Results '! 'i CHAIN OF CUSTOuY AND ANALYSIS REQUEST 1701 Westwind.Dr., SUite 103., Bakersfield;~..O^ 93301' 805-328-0962 CLIENT NAME (~{ }0 ~C1'~,~1~'/:::)<~ , ANALY~E~ REQUESTED REMARKS PROJECT MANAGE 'FAX ~ SAMPLER NAME ;... & 8AMPLE DATE/TIME 8AMPLE DESCRIPTION, IDENTIFICATION~ I SAMPLED Matrix, container, eto... ~UNOUISHED B~om~ C~a~ Date ~ time RELINQUISHED BY D'ale N Project Davies Oil 'Ecr:ificd bv thc State of Cahfornta O~-pat~:mcnr. of Hoalth Sor~ccs 1701 Westwtnd Dr. Suite. 103 Bakersfield, CA 93301 Phone: 80.S-328-0962, Pax: 80S,-325-1 Report of Aflaly:iI Test: 8015m/8020/5030 Total Petroleum Hydrocarbons and BTEX's by Purge and Trap Company: Aquageoscienees 1701 Westwind Dr. Suite 101 Bakersfield, CA 93301 Contact person: Thomas Cleary Sample: D-RW-1 Matrix: Water Analyst: MCM Lab #: 94A521 Date of sampling: June 3, 1994 Date of analysis: June 6, 1994 Date of Report: June 7, 1994 Compound Concentration,,, ,U,m't,s, , PQL* Benzene 1. pg/L (ppb) 1. Toluene 3. lag/L (ppb) 1. Ethylbenzene ND gg/L (ppb) 1. Xylenes , 15. pg/L (ppb) 1. TPH gasoline 1700. }xg/L (ppb) 100. TPH diesel NA }x~fl~ (ppb) 100. *PQL = Practical Quantitafion Limit ND = No Detected at given PQL Rafael Espinosa Leniz, Ph.D. Laboratory Director. Groundwater Scientists ° Environmental Consultants June 1995 Groundwater Quarterly Monitoring Re.~ort Davies Oil 3305 1/2 Gulf Street Bakersfield, California Presented To: Bill Davies Davies Oil and Ms. Dolores Gough Kern County Environmental Health Services Department Presented By: · AquaGeosciences, Inc. July, 1995 Patrick McCullough Project Geologist Philip ~ R.G. #4779 Principar Hydrogeologist Registration Expires 11/30/96 4440 Orissom Street, Suite 100 ' Bakersfield, California 933I 3 (805) 836-8100 ° FAX (805) 836-8800 (800) 3014244 TABLE OF CONTENTS SECTIONS 1.0 2.0 2.1 2.2 3.0 4.0 4.1 4.2 4.3 4.4 5.0 6.0 7.0 8.0 INTRODUCTION BACKGROUND Facility Description Project History GEOLOGY'AND HYDROGEOLOGY GROUNDWATER MONITORING Groundwater Elevation Groundwater Monitoring Well Purging Groundwater Sample Collection Analytical Results ANALYTICAL RESULTS CONCLUSIONS RECOMMENDATIONS LIMITATIONS Page 2 2 2 2 4 5 5 5 6 8 8 9 9 Exhibit 1 Exhibit 2 Exhibit 3 Exhibit 4 Exhibit 5 Exhibit 6 Vicinity Map Plot Plan Map March 1995 Groundwater Gradient Map June 1995 Groundwater Gradient Map March 1995 Groundwater-TPHg Concentration Contour Map June 1995 Groundwater-TPHg Concentration Contour Map June 1995 Groundwater Monitoring - Liquid Level and Analytical Data Historical Groundwater Monitoring - Liquid Level Data Historical Groundwater Monitoring - Analytical Data Appendix A Groundwater Purge Data Sheets Appendix B Chain of Custody and Analytical Results 1.0 INTRODUCTION This report presents the results of the June, 1995 Quarterly Groundwater Monitoring performed by AquaGeosciences, Inc. (AGI) at the Davies Oil Company at 3305 1/2 Gulf Street, Bakersfield, California. On June 1 and 5, 1995, depth to water measurements were collected from wells on and around the site. The wells were then purged and sampled for chemical analyses. 2.0 BACKGROUND The following includes a facility description and a sequential project history to date. 2.1 Facility Descri.Dtion Davies Oil is located at 3305 1/2 Gulf Street in the City of Bakersfield, Kern County, California (Exhibit 1). The site is currently operated as a gasoline and diesel dispensing-service station and contains two gasoline and four diesel dispenser islands, along 'with an office complex. The site is surrounded by commercial operations and residential property. The facility is shown to scale on Exhibit 2. 2.2 Project History_ During the winter of 1985, inventory records first detected product losses from the regular-gasoline dispensing system. In response to these losses, a pressure test was conducted on the tank and lines which indicated a leak in the regular-gasoline product lines. The suspect faulty line was repaired, but shortly thereafter, inventory records again indicated product losses. The tanks and lines were tested again on March 3, 1986 where a leak in the.vapor lines was detected then subsequently repaired. On July 1987, Twin Cities Testing Corporation estimated 2,500 gallons of regular-gasoline. may have been lost on site. Shortly thereafter, Davies Oil contacted KCEHSD and. apprised them of the situatiom In October 1986, three (3) 10,000 gallon underground storage tanks were removed from the Davies facility because they were no longer in use. According to the KCEHSD, diesel fuel was detected in soil samples obtained during the excavation. Information generated by several prior consultants including Delta Environmental Consultants, Inc., Aegis Environmental, Inc., and Associated Soil Analysis, Inc. revealed the presence of both soil and groundwater contamination by gasoline range hydrocarbons at the subject site. A total of seventeen (17) groundwater monitoring wells, (nine (9) two inch and eight (8) four inch diameter) have been installed on-site. Additionally, there are two groundwater recovery wells, one 12-inch and one 6-inch diameter, designated as RW-1 and MW-12a. A groundwater treatment system was installed that consisted of a packed column air stripper for dissolved phase hydrocarbon removal and two carbon filters in line at the effluent port prior to 2 discharge to an on-site infiltration gallery. During installation and operation of the treatment system in 1988 and 1989, the water table was relatively stable between 18 and 22 feet below ground surface (bgs). In February of 1990, the water table dropped below the bottom of the groundwater recovery well at 36 feet bgs due to regional drought conditions, rendering the remediation equipment temporarily inoperative. In November of 1988, hydraulic conductivity tests were performed by Delta Environmental Consultants, Inc. This test was performed on RW-1 using a short duration pump test. Transmissivity was estimated to be 12,000 gpd/ft and hydraulic conductivity was calculated at 70 ft/day. A maximum plume extent was then calculated and was estimated at 1100 ft down gradient and was later confirmed by down gradient monitoring wells MW-13 and MW-14a. A soil vapor survey was conducted in November 1990 to establish the limits of hydrocarbon vapors in the soil. In January 1991, three (3) 4-inch diameter monitoring wells were installed down gradient of the plume (MW-13, MW-14, and MW-15) and one 4-inch well upgradient (MW-16) at the northern boundary of the property. Well depths ranged from 48.5 feet to 55.0 feet bgs. Groundwater analyses revealed benzene contamination above State Action Levels (SAL) in dOwn gradient wells MW-13, MW-14, and MW-15. Upgradient well MW-16 showed non-detect (ND) results for all analyses. MW-14 however, exhibited the highest levels of dissolved hydrocarbons due to its central position down gradient of the gasoline plume. All four groundwater monitoring wells became dry in April 1991 due to a continuing decline of the water table. The deepest well was MW-13, completed to a depth of 55 feet bgs. In March 1992, four of the groundwater monitoring wells were twinned with deeper wells screened from 30 to 60 feet bgs to accommodate the declining water table. The new wells were designated MW-la, MW-11a, MW-12a, and MW-14a. All wells were completed with 4-inch Schedule 40 PVC casing and liner, except for MW-12a, which was completed with 6-inch diameter PVC casing. A pump test was conducted on MW- 12A before plumbing it to the air stripper tower on-site. The groundwater remediation unit was apparently re-started in fall 1992, but due to Iow flow rates, high drawdown, and a continuing decline in the water table, was shut down once again a few months later near the end of 1992. The project was apparently idle from 12/92 to 9/93. In September 1993, AGI was retained by Federated Insurance to begin quarterly groundwater monitoring, develop and implement a Remedial Action Plan. On April 4, 1994 the KCEHSD approved the Remedial Action Plan submitted by AGI. An addendum to the Remedial Action Plan was then submitted in late April, 1994 which included air sparging of the groundwater which was later approved by the KCEHSD on June 10, .1994. 3 On July 7, 1994, AGI installed ten (10)air sparge wells along the southwest portion of the Davies Facility. On July 11, 1994 through August 4, 1994, AGI began trenching, manifolding, and plumbing the air sparge wells and the existing vapor extraction wells to a Vapor Extraction System. The Fire Cat 250 CFM Thermal Oxidizer was installed and operation of the Air Sparge and VES unit began on August 4, 1994. Operation of this equipment continues to present date. 3.0 GEOLOGYAND HyDROGEOLOGY 3.1 Site Geology The sediments underlying the site are Quaternary alluvial and fluvial deposits consisting of unconsolidated fine- to coarse-grained sands and sandy silts (Calif. Div. of Mines and Geol., 196~. The soil in the subsurface encountered from previous work consists of well graded to poorly graded sands and gravels to a depth of approximately 65 feet below the surface grade (bsg). 3.2 Site Hydrogeology Published data (KCWA, 1990~) shows the site is located within a region of groundwater mounding. The mounding is presumably a result of groundwater recharge from large surface holding ponds in association with a water purification plant, located approximately 1/4 mile to the northeast. The regional groundwater gradient beneath the site is to the southwest. Previous work at the site indicated the depth to groundwater remained between 14 to 19 feet (bsg) from July 1986 to March 1989. In subsequent years the depth to groundwater progressively increased, resulting in the drying of several monitoring wells. The continuous drop in groundwater level is believed, in part, the consequence of the prolonged regional drought conditions which existed throughout central and southern California from about 1986 to 1992. In September, 1992 the average depth to groundwater at the site was approximately 35 feet (bsg). In June 1995, AGI personnel collected groundwater measurements at the site from the existing monitoring wells and the results are shown in Table 2. Groundwater measurementS collected on June 5, 1995 show the depth to groundwater has an average depth of about 21 feet (bsg), an increase of approximately 4.5 feet in groundwater elevation from March, 1995. Groundwater gradient in March, 1995 was 0.0100 feet/foot, (Exhibit 3), and groundwater data in June, 1995 (Exhibit 4), shows a gradient of approximately 0.024 feet/foot in an overall southwesterly direction. The extended area of minimum slope in the center of the site~ indicative of th-~-~r sparge system. California Division of Mines and Geology, 1964, Geologic Map of California, Bakersfield Sheet Kern County Water Agency, 1990, Improvement Distdct No. 4, 1989-Report on Water Conditions 4 4.0 GROUNDWATER MONITORING The following sections detail the methods and procedures used in conducting the field work on June 1 and 5, 1995. The field work included measuring.groundwater levels, purging wells, and collecting groundwater samples. The purpose of the monitoring was to assess the groundwater gradient, and the concentration, distribution, and type of petroleum constituents in groundwater. Additionally, the purpose of the monitoring was to assess the effectiveness of the on-going remediation as well as determine time required-before .requesting site closure. 4.1 GrQundwa, ter Elevation Groundwater elevation data was collected from Monitoring Wells MW-l, MW-la, MW-2, MW-3, MW-5, MW-10, MW-11, MW-11a, MW-12, MW-12a, MW-13, MW-14a, MW~15, and MW-16. Monitoring Wells MW-4 and MW-8 were dry. Monitoring well MW-9 was not located. Monitoring well RW-1 was not sampled due to lack of accessibility. In those wells sampled, the depth of freestanding groundwater was measured to the' nearest one hundredth (0.01) of a foot using a Solinst water level indicator. The Solinst water level indicator and attached measuring tape were washed in TSP and rinsed prior to each use. The well elevations were surveyed by Delta Environmental Consultants, Inc. All elevations were referenced to a bench mark located near the fenced corner at the northeast end of Gulf Street. The bench mark consists of a white wood post with an elevation of 409.50 feet above mean sea level. Measurements and reference elevations were taken from the north top edge of the well casing. 4.2 Groundwater MQnitodng Well Purging Ti~ree (3) well casing volumes were removed from each well using a submersible purge pump or a bailer, depending on the well, prior to collecting a water sample. The volume of water to. be removed was calculated by subtracting the depth to groundwater from the total depth of the well and multiplying by the cross sectional area of the. well casing. Water temperature, pH, and conductivity were measured after the removal of each well volume. When the measurements were within 10% of previous measurements, the well was considered stabilized for sampling. The purge data sheets documenting the field results are included as Appendix A. 4.3 Groundwater Sampl~ 6;Qllection Groundwater from each monitoring well was sampled for laboratory analyses following the purging of the well. Groundwater samples were collected by lowering a disposable PVC bailer into each monitoring well. Two (2) 40-milliliter amber VOA vials were filled with the collected groundwater sample and sealed with teflon-lined lids. Care was taken to ensure no headspace or air remained trapped within the vial when sealed. The water samples were immediately placed in an iced cooler at 4° 5 centigrade for storage and transport. The samples were logged on a chain of custody document, and transported to Halcyon, a California certified laboratory for chemical analyses. 4.4 Analytical Results Twelve (12) groundwater samples were analyzed by Halcyon Laboratories of Bakersfield, a State certified laboratory, in accordance with State guidelines and EPA protocols. The groundwater samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and total xylenes (BTEX) using DHS Luff Method/8015M and EPA Method 8020, respectively. The laboratory reports and chain of custody documents for these samples are included in Appendix B. Table 1 below summarizes the laboratory results. TABLE 1 SUMMARY OF LABORATORY ANALYSES OF GROUNDWATER SAMPLES FROM QUARTERLY MONITORING 6/1/95-6/5/95 MW- 1 20.31 ND ND ND ND 980 NA MW-lA 19.72 ND ND ND 180 5220 NA MW-2 20.53 910 3180 ND 5140 33040 NA MW-3 21.22 ND 800 ND 1450 1280 NA M W - 5 19.48 ND ND ND ND ND NA M W- 1 0 19.34 ND ND ND ND ND NA MW-11 20.21 ND 170 ND 410 1622. NA MW-11A 19.25 140 240 320 1040 850 NA MW-12 21.13 120 250 ND 590 5110 NA MW-12A 19.74 ND ND ND ND ND NA M W - 1 3 22.03 ND ND ND ND ND NA MW-14A 21.43 ND ND ND 220 ND NA MW-15 21.30 ND ND ND ND' 51 0 NA M W - 1 6 1 7.72 ND ND ND ND ND NA Results reported in ug/L (ppb) TPHg = Total Petroleum Hydrocarbons as gasoline TPHd = Total Petroleum Hydrocarbons as diesel ND -- Non-Detect NA=Not Analyzed 5.0 ANALYTICAL REsuLTs Exhibits 5 and 6 graphically show AGl's interpretation of the changing aerial distribution and concentration of TPHg, in parts per billion, from March, 1995 to June, 1995. Monitoring wells MWol, MW-la, MW-2, MW-3, MW-11, MW-11a, and MW-12 contain detectable concentrations of TPHg and BTEX. Concentrations for TPHg range from non-detected to 33,040 ppb. Benzene concentrations range from non-detected to 910 ppb. Monitoring Well MW-2 contained the highest concentrations of the abovementioned constituents. 6.0 CON(~LUSION$ There are a total of seventeen (17) groundwater Monitoring Wells and two (2) groundwater recovery wells located on and adjacent to the subject site. The initial ten (10) wells (MW-l, MW-2, MW-3, MW-4, MW-5, MW-8, MWo9, MW-10, MWo11, and MW- 12) were advanced to total depths of between twenty five (25) and thirty (30) feet below ground surface. Sedimentation and silt accumulation has caused MW-4, MW-5, and MW-8 to become dry. RW-1 is currently inaccessible to depth to groundwater measurement, and MW-9 cannot be located. MW-14 was not investigated because history has shown this shallow well to be dry and MW-14a is close to it for sampling. Depth to groundwater measurements and analytical data for MW-l, MW-la, MW-2, MW-3, MW-10, MW-11, MW-11a, MW-12, MW-13, MW-14a, MW-15, and MW-16 are shown on exhibits 4 and 6. The highest concentrations of petroleum hydrocarbons in groundwater, from this sampling episode, were found in the vicinity of MW-2. Monitoring well MW-2 has been dry since March 13, 1989. At the present depth to groundwater, MW-2 contains less than 2 feet of water within this heavily silted-up well. Analytical results from MW-2 may not represent true hydrocarbon concentrations within the groundwater due' to this wells lack of water column. Similarily, MW-3 has also been dry for a significant period of time. The water column in this well is minimal, and therefore, groundwater hydrocarbon concentrations in this well is probably not representative of true groundwater conditions. The plume continues to migrate in the down gradient direction, and concentrations decrease with distance from the source. The volatile aromatic constituents appear to have migrated somewhat in the downgradient direction and show indications of minor lateral and upgradient dispersion. Groundwater elevations have risen approximately 4.5 feet across the site since the March, 1995 monitoring event. The rise in groundwater elevation has caused minqr. lateral and upgradient dispersion of the volatile aromatics. Large ¢§~',,S"'~i~ groundwater elevation, as observed between March and'June of 1995, often 7-~ult in increased hydrocarbon concentrations in groundwater. Hydrocarbon constituents float on the top portion of the water/soil interface and as groundwater elevations decrease the hydrocarbon constituents smear and become trapped in the pore space of the soil. As groundwater rises, these trapped hydrocarbons in the soil dissolve in the water causing an apparent increase in contaminants during this period. Although concentrations did increase in the vicinity of MW-l, analytical results did not increase in the vicinity of MW-11 and MW-12. In fact, concentrations of TPHg have significantly decreased in MW-11 and MW-12. This indicates that the vapor extraction of the soil has mitigated the capillary fringe in the MW-12 area. 7.0 RECOMMENDATIONS The Groundwater Air Sparge and Vapor Extraction System began operation in early August, 1994. It is AGI's opinion that the system is working well and that remediation is on schedule. Reduced concentrations of hydrocarbons in the center of the plume are particularly indicative of effective remediation. AGI recommends that quarterly groundwater monitoring be continued to track the progress of the remediation. After carefully reviewing data obtained from future monitoring events, adjuStments and modifications of the overall system will be made as necessary. 8.0 LIMITATIONS; AGI performed this investigation in accordance with generally accepted standards of care which exist in Central California at this time. It should be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of subsurface conditions present. No warranty, expressed or implied, is made. 9 EXHIBITS ! .,' J Scale ~.~..~Ig~, ...... SITE LOCATION ~:ALIFOANI NORRIS ROAO North AquaGeosciences. Inc. 1 701 Westwind Drive Suite 103 Bakersfield, California 93301 " elephone: (805) $28-0962 I Fax 328-1129 Davies Oil Company 3305 1/:2 Gulf Street Bakersfield, California VICINITY MAP Exhibit 1 PIERCE ROAD Rush Swoape ~ North Scale 1"= 125' Jim's Stol and Supply I PiI~ Storage Teamst~'rs Local Union No. 87 Ab~md~u,lxl Pfivat~ WeAl I I Prol~tics Truck Kemvill¢ Stage And Freight Open Lot Truck Parking Sux~$o ' [ ,. .... | l.|~u~'3Ul 'q[~IW-10 Davi~ Oil Company · Und~q~o~d I MW-4+ 1'~ ~ 1~ [Pump ~ Islands Infiltration Gallcr~ AquaGeosciences, Inc. 4440 Gdssom Street, Suite 100 Bakersfield, California 93313 Telephone: (805) 836-8100 Fax: (805) 836-8800 DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA PLOT PLAN MAP EXHIBIT 2 A fell Open Space © North Scale 1"= 125' II k-MW-15 383.29' I tiPS Storage Area _ _1 lhl~ Sto,'age Jim's Steel and Supply Key l~lnes of equal elevation l)lre,..~m of inferred flow I ! ~: I I I I I I ROAD Teamsters Ix)cai Union No. 87 Private Kemville Stage And Freight Open Lot Truck Parking ~w-12 Dry MW-12a IvlW-2 Truck Wash Rush Swoape Properties Un&r~ound Dry MW-4'4~ AquaGeosciences, Inc. 4440 Grissom St., Suite 100 Bakersfield, California 93313 Telephone: (805) 836-8100 Fax: (805) 836-8800 DAVIES OIL COMPANY BAKERSFIELD, CALIFORNIA Groundwater Gradient Map for March 1995 I I 3 Infiltration Galley EXHIB1T .... ~IERCE ROAD No u NS ...... ' .......... :. .. Bmldm S~ l "= 125' Intihration Galkg' I I I II AquaGeo~iences, Inc. DAVIES OIL COMPANY ~0 Gris~m St., Suite 100 BAK~S~ELD,. CALIFORNIA ~kersfield, California 9aa~a Groundwater Gradient Map 4 Telephone: (805) 8a6-~1 oo for F~: (805) 836-8800 June 1~5 Area ~.~ North Scale 1"= 125' Open Space Storage I Jim's Steel and Supply Pipe Storage KEY Lines of eq. ual concentrauons in parts-per-billion >100,O00ppb .~ > 10,O00ppb r'IERCE ROAD MW- 13 I Teamsters Local Union No. 87 Rush Swoape Properties Al:ando~d Private Well Truck Kemville Stage And Frei ght Open Lot Truck Parking AquaGeosciences, Inc. 4440 Grissom St., Suite 100 Bakersfield, California 93313 Telephone: (805) 836-8100 . Fax: (805) 836-8800 DAY,ES COMPANY BAKERSFIELD, CALIFONIA Groundwater -TPHg Concentration Contour Map for March 1995 EXHIBIT 5 PIERCE ROAD Area ' ~ I ~ [ Rush Swoape ............. · .' ....... ' ' · ...... '~ .... :-:- '.: ....... A~d :-:.:--: .- ............ ~.., .' ~ ~~ ~,':::::" ,??,~[~ ~<~ ~k' Z :///y~j,.'% '':? ......... ]:E:? ..... ::::::....::::::::~::: ' ::::::::::::::::::::::X]:]:~:]:]:~:~:~:B~1 ~ , ' ~ ~:¢:'2':~ ~4/~'~' ~:/~< "~ z Z~,'Z~" -/ ~':~':::::', ~ ...... %,z...x ...... · /~Z/z ~ / B<Z~. / ~ .:l:.:..: ........ :l:.l: 0 . ~)~f~'/'> ' ;" ~ ~' '" ~'~ ~~' '*~'" .... ' ...... ~/~'" ~ ~:' '%" ~" ' ::::::::::::::::::::::::::::::::::::::::::::::::::::::~f'Z/'Z"z/..;~';/;. /-' ,/~'Z;';,5 ...... 'K~;f~;~:: ~.,,.~/ ,,~/;x ¢~/'/.2'? .... :::::::::::: ............... ::::::~ : : :::'::: ::::::::::::::::::::::::::::::: / ////?>; //:, 44./ /////z?~/}~ ~'/ / ~' ' *~ ,', '%. ,' ' ' ~/~ ::::::::::::::::::::: ..... :::' /,w ,~',%%%~.:'~4'..~%..-.,.x'..' .s ..~%...-% .:,:.:.:.:.:.:.::.:::.:.:.:.:.:.:.:., · ~ ~;~' ~ ~ :z-.> ..... ..'.,'..h,:¢,~ ~ ',.-..-,x ~::' ................ '::.::.:. f ~ , ~.. ~ ~,,~~,~,..~ ........................................ ~ I I conccn~afions ' ~Z] > 1 0 000n~ -. .... nG~ N-- '"'~ '~ ~ Davies ~1 Core.ny-- ND ~ Nonh ~ inc.-per-billion ~ ~ ~ ~ ~7 ' nUn~r~ ''~ ~mn [~filtratio~ 6all~ II III I i AquaGeo¢iences, Inc. ~A~S O~ CO~A~ ~HIBIT 4440 Gris~m St., Suite 100 BA~RS~E~, CAL[FO~[A Bakersfield, California 93313 Telephone: (805)836-8100 Groundwater '~P~8 Concentration Contour ~ap for June Fax: (8~) 836-8800 I I I II II III TABLES Hist. Liquid Data 6/95 '~'~':i ....................... ['"'~"i'¢'~')'~ ............. ~'~'6~'5'~ .................................................. ~'5~'5'i .................. ~'~5.5'5 ...... o. z5 '[-T~T3/89 - 20,82 -~,12 "0.~ - ~/l~ - 21.15 388,93 0,01 z/~/8~ zz.~ ~8z.~s 7/31/89 28,55 381,79 8/24/89 29,64 380,7 9/7/89 29,1 381,24 '10/2 S/89 30,22 380.12 11/8/89 30,71 379,63 12/8/89 30,5 379,84 1/4/90 31,55 378,79 2/7/90 31,6S 378,69 2/19/90 30.31 380,03. 5/3 ~/90 33,1 377,24 ODOR 7/25/90 34, 5 375,84 ODOR 8/16/90 35,1 375,24 ODOR 1/11/91 DRY DRY 4/5/91 DRY DRY G/15/91 DRY DRY 12/9/93 26,09 384,25 NO ODOR 3/30/94 25,80 384,54 NO ODOR 6/3/94 25,96 384,38 NO ODOR 8/23/94 27,49 382,85 12/5/94 Not Sampled Not Sampled 3/3/95 Not Sampled Not Sampled 6/1/9S Not Sampled Not Sampled Page 1 Hist. Liquid Data 6/95 i J ............................ -T~-13L-E-"~ ....................... I ' ' I HISTORICAL GROUNDWATER MONITORING MW-1 7/11/86 409.33 24.18 14.86 394.47 I 4" free prod. 5/8/87 18.23 391.1 0.5' 10/22/87 19.72 389.61 0.06' 12/3/87 20.66 388.67 0.8' 3/4/88 19.09 390.24 0.25' 5/2/88 2_ 1.24 388.09 0.2' 11/2/88 22.83 386.5 Strong Odor 1/13/89 19.93 389.38 3/14/89 20.22 389.11 6/26/89 DRY DRY 10/25/89 DRY DRY 1/4/90 DRY DRY 3/6/90 DRY DRY 1/11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 DRY DRY ,STRONG ODOI~ 12/9/93 DRY DRY 3/30/94 DRY DRY 6/2/94 DRY DRY 8/23/94 DRY DRY 12/5/94 DRY DRY 3/3/95 DRY DRY 6/5/95 20.31 389.02 Oily film _ 9/20/93 t 25-28i382.82 __ 12/9/931 23.73 384.37 3/30/94 23.47 384.63 6/2/94 23.64 384.46 8/23/94 25.13 382.97 12/5/94 ] 27.08 381.02 No Odor 3/3/95-- --I 23.88 384.22 6/5/95r~ 19.72 j 388.38 iNo Odor Page 2 Hist. Liquid Data 6/95 i 1._ TABLE 2 .....1i " , '" ....... I~i~:FG~iCALJ'"G'i~DL]'~I~-V~:I--E~-"I~'i:I:ORiNG ........ I ....... it ..........................................~.,~.~, -~.~L :'~;';~-~'"'~-~';~:'"'- -~-i:'~, ............ I~ ................ ............. I I MW-2 7/11/86 409.31 24.3 15.02 394.29 12/19/86 17.87 391.44 5/8/87 NA NA 10/22/87 19.35 389.96 NO PRODUCT 12/3/87 20.43 388.88 ODOR 3/5/88 19.07 390.24 NO ODOR 5/2/88 20.7 388.61 SLIGHT ODOR 11/2/88 22.79 382.56 1/13/89 20.04 389.27 SLIGHT ODOR 3/13/89 20.45 388.86 6/26/89 DRY DRY 10/5/89 DRY DRY 3/6/90 DRY DRY 1/11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 DRY DRY STRONG ODOI; 12/9/93 DRY DRY 4/1/94 DRY DRY 6/2/94 DRY DRY 8/23/94 DRY DRY 12/5/94 DRY DRY 3/3/95 DRY DRY 6/5/95 20.53 388.78 T Page 3 Hist. Liquid Data 6/9 5 10/2~/87 20 390.22 SLIGHT ODOR 1 ~/3/87 ~0.77 389.45 SLIGHT ODOR 3/5/88 19.42 390.8 DIESEL ODOR 5/2/88 . [... Z 1.1 389.1 Z SLIG~ ODOR 11/Z/88 22.86 387.36 DIESEL ODOR 1/13189 ZO.Z 390.02 3/13~89 20.77 389.45 10/5/89 DRY DRY 11/9/89 DRY DRy 1/4/90 DRY DRY 2/7/90 DRY DRY 3/6/90 DRY DRY 1 / 11/91 DRY DRY 4/5/9i' DRY DRY 6/15/91 DRY DRY 9/20/93 DRy DRY 12/9/93 DRY DRY 3/30/94 DRy DRY 6/2/94 DRY DRY 8/23/94 DRY DRY 12/5/94 ...... DRY DRy 3/3/95 DRY DRY 6/5/95 21.22 389.00 Page 4 Hist. Liquid Data 6/95 i HISTORICAL GROUNDWATER MONITORING 'MW-4 7/11/86 409.72 15.06 394.66 5/8/87 17.87 391.85 10/22/87 18.46 391.26 12/3/87 20.41 389.31 3/5/88 19.03 390.69 5/2/88 20.58 ' 389.14 11/2/88 22.5 389.2 1/13/89 20.08 389.64 3/13/89 20.3 389.42 6/26i89 DRY DRY 10/5/89 DRY DRY 11/9/89 DRY DRY 1/4/90 DRY DRY 2/7/90 DRY DRY 3/6/90 DRY DRY 1/11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 DRY DRY 1., 12/9/93 DRY DRY 3/30/94 DRY DRy 6/2/94 DRY ' DRY i 8/23/94 DRY DRy 12/5/94 DRY DRy 3/3/95 DRY DRY 6/5/95 DRY DRY Page 5 Hist. Liquid Data 6/95 , MW-5 3/13/89 407.62 23.3 18.32 389.3 6/26/89 21.79 385.83 10/25/89 DRY DRY 9/21/93 DRY DRY 12/9/93 DRY DRY 4/1/94 DRY DRY 6/2/94 DRY DRY 8/23/94 DRY DRY 12/5/94 DRY DRY 3/3/95 22.2_8 385.34 6/1/95 19.48 388.14 Page 6 Hist. Liquid Data 6/95 TABLE 2 . HISTORICAL GROUNDWATER MONITORING MW-8 5/8/87 409.68 24.6 18 391.68 10/22/87 19.6 390.08 12/3/87 20.6 389.88 3/4/88 19.27 390.41 5/2/88 DRY DRY 1 1/2/88 DRY DRY 1/13/89 DRY DRy '3/'1 ~/89 20.'7 ' 388.98 6/26/89 DRY DRY L 10/5/89 DRY DRY 11/9/89 DRY DRY 1/4/90 DRY DRY 2/7/90 DRY DRY r ' 3/6/90 DRY DRY 1 / 11/91 DRY DRy 4/5/91 .... DRY DRY 6/15/91 DRY DRY 9/20/93 DRy DRY 12/9/93 DRY DRY 3/30/94 DRY DRY 6/2/94 DRY DRY 8/23/94 ..... DRY DRY 12/5/94 DRY DRY 3/3/95 DRY DRY 6/1/95 DRY DRY Page 7 Hist. Liquid Data 6/95 t HISTORICAL GROUNDWATER MONITORING ................... .............. I ....... , " ........... MW-9 5/8/87 406.6 15.37 391.23 10/22/87 17.38 389.22 12/3/87 18.12 388.48 3/4/88 16.7 389.9 5/2/88 18.26 388.34 11/Z/88 DRY DRY 1/13/89 17.87 388.72 3/13/89 18.2 388.4 6/26/89 DRY DRY 10/5/89 DRY DRY 11/9/89 DRY DRY 1/4/90 DRY DRY 2/7/90 DRY DRY 3/6/90 DRY DRY 1 / 11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 1 Z/9/93 Can't locate Can't locate 3/30/94 Can't locate Can't locate 6/2/94 Can't locate Can't locate 8/23/94 Can't Locate Can't Locate 12/5/94 Can't Locate Can't Locate 3/3/95 Can't Locate Can't Locate 6/1/95 Can't Locate Can't Locate Page 8 Hist. Liquid Data 6/95 t I TABLE _2_ ....................... i HISTORICAL GROUNDWATER MONITORING i .i .... MW-lO 3/5/88 408.12 I 27 17.52 390.6 5/2/88[ 19.28 389.04 11/2/88 21 387.12 1/13/89 18.36 389.76 3/13/89 18.82 389.3 6/26/89 22.52 385.6 7/27/89 23.2 384.92 10/5/89 24.53 383.59 1/4/90 26.42 381.7 2/7/90 27.09 381.03 3/6/90 DRy DRY 1 / 11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/21/93 24.72 383.4 12/9/93 23.31 384.81 3/30/94 23.14 384.98 6/2/94 23.18 384.94 8/23/94 24.59 383.53 12/5/94 DRY DRY 3/3/95 23.46 384.66 6/5/95 19.34 388.78 ::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Page 9 Hist. Liquid Data 6/95 i HISTORICAL GROUNDWATER MONITORING MW-11 3/5/88 409.43 26.58 19.23 390.2 STRONG ODOi; 5/2/08 20.78 388.65 NO PRODUCT 11/_2/88 23.57 _ 385.56 0.75' free pro, 1/13/89 _! 20.62 388.81 0.5' 3/13/89 20.63 388.8 0.3' 6/26/89 24.37 385.06 0.01' 7/27/89 25.95 384.24 1.02' 10/5/89 DRY DRY STRONG ODOR 1/4/90 DRY DRY STRONG ODOI: 2/7/90 DRY DRY STRONG ODOI: 3/6/90 DRY DRY 1/11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/20/93 DRY DRY STRONG ODOF 12/9/93 25.55 383.88 STRONG ODOI; 3/30/94 25.19 384.24 STRONG ODOI; 6/2/94 25.42 384.01 STRONG ODOI; 8/23/94 26.96 382.47 12/5/94 DRY DRY 3/3/95 24.64 384.79 6/5/95 20.21 389.22 · 12/9/93I Not sampled Not Sampled 3/30/94 23.39 384.19 6/2/94 23.58 384.00 8/23/94 , 25.07 383.51 12/5/94 27.38 380.20 I 3/3/95 .__~. 23.8__8 383.70 6/5/95 i 19.25 388.33 I Page 10 Hist. Liquid Data 6/95 I TABLE 2 I HISTORICAL GROUNDWATER MONITORING LIQUID LEVEL' DATA MW-12 3/5/88 408.67 27.3 18.62 390.05 STRONG ODOI; 5/2/88 20.16 388.51 SLIGHT ODOR 11/2/88 22.86 385.81 0.5' free prod 1/13/89 19.81 388.86 0.2' 3/13/89 20.02 388.65 0.1' 6/26/89 24.54 384.77 0.94' 7/27/89 25.39 384.05 1.02' 10/5/89 26.6 383.08 0.35' 1/4/90 DRY DRY STRONG ODOR 2/7/90 DRY DRY STRONG ODOR 3/6/90 DRY DRY 1 / 11/91 DRY DRY 4/5/91 DRY DRY 6/15/91 DRY DRY 9/21/93 26.83 381.84 12/9/93 25.13 383.54 4/1/94 24.68 . 383.99 STRONG ODOR 6/2/94 24.91 383.76 STRONG ODOF 8/23/94 26.71 381.96 12/5/94 DRY DRY STRONG ODOF 3/3/95 25.54 383.13 6/5/95 21.13 387.54 MW-12A 3/3/95 unknown 63.36 24.12 unknown 6/1/95 19.74 unknown Page 11 Hist. Liquid Data 6/95 i TABLE 2 MW-13 1/10/91 409.91 48 NA NA 4/5/91 DRY DRY 6/15/91 DRY DRY ' 9/4/92 40.94 368.97 - 9/20/93 29.21 380.7 12/9/93 26.71 380.2 3/30794 25.72 384.19 6/2/94 25.84 384.07 8/23/94 32.09 377.82 · 12/5/94 29.20 380.71 PETROL. ODOI: 3/3/95 27.10 382.81 6/5/95 22.03 387.88 MW-14 1/10/91 408.63 NA NA 4/5/91 DRY DRY 6/15/91 DRY DRY 12/9/93 Not Sampled Not Sampled 3/30/94 Not Sampled Not Sampled 6/2/94 Not Sampled Not Sampled 8/23/94 Not Sampled Not Sampled 12/5/94 Not Sampled Not Sampled 3/3/95 Not Sampled Not Sampled 6/1/95 Not Sampled Not Sampled MW-14A 9/4/92 406.79 62.5 41.25 365.54 9/20/93 28.6 378.19 .... 12/9/93 _ [ 25.84 379.83 3/29/94] 24.64 382.15 F- 24.96 381.83 6/2694 1 8/23/94 _1 29.60 377.19 12/5/94I, 28.28 378.51/ NO ODOR 3/3/95 t 26.77 380.02 I 6/5/95 t 21.43 385.36 I Page 12 Hist. Liquid Data 6/95 HISTORICAL GROUNDWATER MONITORING MW-15 1/10/91 409.78 48.5 NA NA 4/5/91 DRY DRY ........................ 6/1 ~/91 DRY ..... DRY 9/4/92 40.15 369.63 9/20/93 27.65 382.18 12/9/93 25.32 381.47 3/29/94 24.43 385.35 6/2/94 22.78 387.00 8/23/94 30.51 379.27 12/5/94 28.36 381.42 NO ODOR 3/3/95 26.49 383.29 6/5/95 21.30 388.48 MW-16 9/4/92 410.52 32.28 378.24 9/21/93 23.38 387.14 12/9/93 22.25 385.25 3/30/94 22.18 388.34 6/2/94 22.2 388.32 8/23/94 26.28 384.24 12/5/94 25.72 384.8 NO ODOR 3/3/95 21.46 389.06 6/5/95 17.72 392.8 Page 13 Hist. Analytical 6~95 I'"' TABLE 3 I HISTORICAL GROUNDWATE~R MONITORING ANALYTICAL DATA RW-1 12/9/93 ltd 1 m ND I~D ND 3/30/94 ND 1 ND 1 ND ND 6/3/94 1 3 ND 15 1700 NA 8/23/94 ND ND ND 15 ND NA 12/5/94 NS NS NS NS NS NS 3/3/95 NS NS NS NS NS NS "' 6/1/95 NS NS NS NS NS NS MW-1 5/8/87 FLH FLH FU-I FLH FU-I FLH 10/22/87 FLH FLH FU-I FLH FI.H FI.H 3/4/88 FLH FLH FU-I FLH FLH FLH 3/14/89 Ft.H FLH FLH FLH FU-! FI.H 3 / 1 / 90 DRY WELL DRY WELL DRY W'/r. LL DRY WELL DRY WELL DRY WELL , 1 /11/91 DRYWELL DRYWELL DRYWELL DRY WELL DRYWELL DRYWELL 4/5/91 DRY WELL DRY WELL DRYWELL DRY WELL DRY WELL DRY WELL 6 / 15 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9 / 20 / 93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3 / 30 / 94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6 / 2 / 94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 8 / 23 / 9 ~ DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3 / 3 / 95 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/1/95 ND I~) ND ND 980 NA L.MW-1A 9/15/92 12 120 NA 120 NA NA 9/20/93 ND 7 1 8 1300 ND 12/9/93 ND 4 ND ND ND ND 3/30/94 ND 1 ND 2 I~) ND 6/2/94 ND ND ND 1 200 ND 8/23/94 ND 1 ND 3 ND NA 12/5/94 ND ND ND 1.2 ND ND 3/3/95 1,7 1 0,9 5.2 ND ND 6/1/95 , I~) I~D I~D 180 5220 NA FLH = Floating Ll(iuld I-iydrocarbon$ I" NS = Not .S. ampled J I" NA = No! Anal~/zed I ND = Below the indicated detection limit as labeled In Ifle anal),tlcai"Labora or~ reports. Page Hist. Analytical 6/95 I TABLE 3 I HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-2 7/11/86 400 310 I~ 550 11000 NA 12/19/86 9 120 I~ 330 930 NA 5/8/87 89 <0.5 <0.5 89 4100 <1 10/22/87 5 22 <0.5 1 2 I~D 13000 3/4/88 13 2 5 39 1300 3/14/89 5 20 <10 20 4000 10/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY WEM. DRY WELL DRY WELL DRY WELL 1 / 11/91 DRYWELL DRY WELL DRY WELL DRYWELL DRY WELL DRYWELL 4 / 5 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6 / 15 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/1/9 4 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6 / 2 / 94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 8 / 23 / 94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 12/5/94 DRY WELL DRYWELL DRY WELL DRY WELL DRY WELL DRY WELL 3/3/95 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 6/5/95 910 3180 !~ 5140 33040 NA MW-3 7/11/86 43 110 NA 170 61 O0 I~D 5/8/8 7 0.9 <0.5 <0.5 <0.5 354 6.2 10/22/87 <1 3 1 1 12000 3/4/88 <0.1 <1 <1 <1 I~D 29000 3/14/89 <0.2 <2 <2 <2 600 hE) 10~5/89 DRYWELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 311190 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL 1 / 11/91 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 4 / 5 / 91 DRY WELL DRY WELL DRy WELL DRY WELL DRY WELL DRY WELL 6 / 15 / 91 DRY WELL DRy WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY'WELL DRY WELL DRYWELL 3/30/94 DRY WELL DRYWELL DRYWELL DRYWELL DRY'WELL DRYWELL 6/2/94 DRYWELL DRYWF..LL DRYWELL DRYWELL DRYWELL DRYWELL 8/23/94 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/3/95 DRYWELL DRY'WELL DRYWELL DRYWELL DRYWELL DRYWELL 6/5/95 I~) 800 I~) 1450 1280 NA FI.H = FIoatlr~ t. lquld NA ~ Not I ND ~ Bolow tho Indlcatod d~t,¢tlon Itmlt a~ lab~tod In ~ anal~lcal Labora ,~/ mport~. Page 2 Hist. Analytical 6/95 J TABLE 3 HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-4 7/11/86 I~D I~D NA I~) ho NA 5/8/87 1.8 7.6 <0.5 5.2 22 <1 10/22/87 0.1 <1 <1 <1 <50 I~) 3/4/88 <0.1 <1 <I <1 <50 I~) 3/14/89 <0.2 <2 <2 <2 <50 I~) 10 / 5 / 89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRYWELL DRYWELL DRY WELL DRY WELL DRYWELL 1 / 11/91 DRYWELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL 6/15/91 DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL DRY WELL 9/20/93 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/30/94 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 6/2/94 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 8/23/94 DRY WELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/3/95 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL .................................... ........ .......... I MW-5 9/20/93 DRY WELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WF_LL DRY WELL DRY WELL 4/1/94 DRY WFJ. L DRY WF_LL DRY WELL DRYWELL DRY WELL DRYWELL 6/2/94 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL e/23/94 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/3/95 I~) hO 6/1/95 ho ND ::::::::::::::::::::: ::::::::::::::::::::::::: -: ....... ..-.....: .............. :.:. .......................... :. ........ .:.:::.:...,:.:....: .......... .:.......: ............................................ ,: ............ .: ............................................ .: .... MW-8 5/8/87 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 10/22/87 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 3/4/88 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 3/14/89 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 10/5/89 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL 3/1/90 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1/11/91 DRY WELL DRY WELL DRY WELL DRY WELL DR?WELL DRY WELL 4/5/91 DRY'WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL 9/20/93 DRYWELL DRY WF_[.L DRY WELL DRY WELL DRYWELL DRYWELL 12/9/93 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3 / 30 / 94 DRY WELL DRY VVEI_L DRY WELL DRY WELL DRY WELL DRY WELL 6/2/94 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 8/23/94 DRYWELL DRYWELL DRY WELL DRYWELL DRY WELL DRYWELL 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRYWELL 3 / 3 / 95 DRY WELL DRY ~ DRY WELL DRY WF_LL DRY WELL DRY WELL 6/1/95 DRY WELL DRY WF_.L DRY WELL DRY WELL DRY WELL DRY WELL ~I.H ~ Floatln~ Liquid NS = Not Sampled NA = Not Analyzed I ND = B~Ilow the indicated detection limit as labeled In the analytical Labora :ory reports. ! I I Page 3 Hist. Analytical 6/95 I TABLE 3 J HISTORICAL GROUNDWATER MONITORING , ANALYq'ICAL DATA MW-9 5/8/8 7 1155 3810 1740 15380 33400 <1 10/22/87 10 1600 2200 37000 170000 3/4/88 40 1100 3600 28000 70000 3/14/89 31 120 2200 11000 56000 10 / 5 / 89 DRY W~.LL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/1/90 DRY WELL DRY WELL DRY VVEU. DRYWELL DRY WELL DRY VVELL 1 / 11/91 DRY WELL DRYWELL DRy WELL DRY WELL DRY WELL DRY VVELL 4 / 5 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRY WELL DRY WELL DRYWELL DRY WELL DRY WELL DRY WELL 9/20/93 NS NS NS NS NS NS 12/9/93 NS NS NS NS NS NS 3/30/94 NS NS NS NS NS NS 6/2/94 NS NS NS NS NS NS 8/23/94 NS NS NS NS NS NS 12/5/94 NS NS NS NS NS NS 3/3/95 NS NS NS NS NS NS · 6/1/95' NS ' NS NS NS NS NS MW-lO 3/4/88 2.2 <1 <1 2 <50 3/14/89 <0.2 <2 <2 <2 <50 I~) 10/5/89 <0.2 <2 <2 <2 <50 3 / 1 / g 0 DRY V~-LL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 1 / 11191 DRY WELL DRY WELL DRY WELL DRYWELL DRYWELL DRYWELL 4 / 5 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6 / 15 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 I~D I~) I~D ND I~D ND 12/9/93 ND ND ND ND ND ND 3/30/94 hO 1 1 7 ND ND 6/2/94 ho ND ND 9 6000 ND 8/23/94 ND ND ND 1 ND NA 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/3/95 1.7 1 0.9 5.4 ND ND 6/5/95 ND ND ND ND ~ NA FLH = Floatln~ Liquid Hydrocarbons NS = Not Sampled i , NA = Not Analyzed I ND = Below the Indicated detection limit as labeled In Ifle anal),tlcal Labora or~ reports. Page 4 Hist, Analytical 6/95 J TABLE 3 I HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-11 3/4/88 10000 89000 3200 37000 240000 I~) 3/14/89 FLH FLH FU-t FU-I FLH FLH 10/5/89 FLH R.H FLH FU-I FLH FLH 3/1/90 DRY WT::LL DRY WELL DRY WELL DRY WELL DRY TNELL DRY WELL 1 / 11/91 DRY WI~LL DRY WELL DRY WELL DRYWELL DRYWELL DRY WELL 4/5/91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6 / 15 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 9/20/93 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 12/9/93 27 280 220 630 4300 3/30/94 10 120 70 4800 120000 I~D 6/3/94 I~) I~D 5 290 19000 8/23/94 7 I 1 53 400 66000 NA 12/5/94 DRY WEM. DRY WELL DRY WELL DRY WELL DRYWELL DRY WELL 3/3/95 21 3.4 2.9 75 7200 I~D 6/5/95 I~D 170 I~D 410 1622 NA MW-11A ' 9/15~92 1.3 1 7 NA 75 NA NA 9/20/93 NS NS NS NS NS NS 12/9/93 NS NS NS NS NS NS 6/3/94 t~) ND ND 4 300 ND 8/23/94 ND ND ND 4 ND NA 12/6/94 ND ND ND 0.7 I~) ND 3/3/95 1 6 g 4.5 ND ND 6/5/95 140 240 320 1040 850 NA ~1W-12 3/4/88 600 4200 3700 42000 100000 3/14/89 FLH FLH FLH FU-I FLH FLH 10/5/89 FLH FLH FLH FLH FLH FLH 3/1/90 DRYWEII--- DRYWEII DRYWELL DRYWELL DRYWELL DRYWELL 1 / 11 / g 1 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 4/8/91 DRYWELL DRYWELL DRY WELL DRYWELL DRYWELL DRY WELL 6/15/91 DRYWELL DRYWELL ' DRYWELL DRYWELL DRYWF_.LL DRYWELL 9/20/93 230 2800 620 1300 150000 I~D 12/9/93 30 1200 1200 6700 39000 ND 4/1/94 70 780 920 5100 220000 AD 6/3/94 1 0 160 40 680 185000 NA 8/23/94 19 34 ' 250 1400 87000 NA 12/5/94 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 3/3/95 7 6 52 410 40000 ND 6/5/95 · 120 250 ND 590 5110 NA 'I~IW- 12A 3/3/95 ND ND~ 1.8 32000 NA = Not Analzed NS = Not Sampled ND = Below the Indicated detection limit as labeled In the analytical Labora 3r~ reports. Page 5 Hist. Analytical 6/95 I TABLE 3 I HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-13 1/11/91 2 1.2 1.2 0.8 <50 <50 4/5/91 DRY WELL DRYWELL DRYWELL DRY WELL DRY WELL DRY WELL 6/15/91 DRYWELL DRYWELL DRY WELL DRY WELL DRY WELL DRY WELL 9/15/92 I~) I~D NA I~D NA NA 9/20/93 5 1 2 1 59 12000 I~) 12/9/93 8 9 4 ND I~) 3/30/94 9 9 I~) 230 8100 6/2/94 3 3 2 27 16000 8/23/94 1 1 8 17 460 NA 12/5/94 2.4 5.3 7.1 10 1100 3/3/95 I~) ND I~) I~) I~) 8/5/95 MD ND mt , ND N^ MW-14 1/11/91 30 3.6 42 32 1100 <50 4 / 5 / 91 DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRYWELL DRYWELL DRY WELL DRYWELL DRYWELL DRYWELL · 3/30/93 NS NS NS NS NS NS 6/2/94 NS NS NS NS NS NS 8/23/94 NS NS NS NS NS NS 12/5/94 NS NS NS NS NS NS 3/3/95 NS NS NS NS NS NS 6/5/95 NS NS NS NS NS NS MW-14A 9/15/92 1.8 m NA m NA NA 9/20/93 m m M:) ND I~) 12/9/93 I~O ND M:) ND MD I~) 6/2/94 2 4 ND 2 MD 8/23/94 I~) ND 1 3 MD NA 1 2/5/94 hD ND ND 0.6 MD ND' 3/3/95 1.6 0.9 ND 3.6 89 ND 6/5/95 MD ND ND 220 MD NA MW-15 1/11/91 1.5 1.1 1 0.5 <50 <50 4/5/91 DRY'WELL DRY WELL DRY WELL DRY WELL DRY WELL DRY WELL 6/15/91 DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL DRYWELL 9/15/92 ND ND NA ND NA NA 9/20/93 MD hD ND ND ND ND 12/9/93 MD 1 ND ND MD 3/29/94 ND ND ND ND ND 6/2/94 MD ND ND ND MD ND 8/23/94 ND ND ND ND MD NA 12/5/94 MD ND ND ND MD ND 3/3/95 1.6 1 0.9 5.4 MD ND · " 6/5/95 ND ND ND ND - 510 NA FLH = Floatlncj Liquid Hydrocarbons NS = Not Sampled NA = Not Analyzed I ND = Below the Indicated detection limit as labeled In Ihe analytical Labora lory reports, Page 6 Hist. Analytical 6/95 I TABLE 3 HISTORICAL GROUNDWATER MONITORING ANALYTICAL DATA MW-16 1 / 11/91 <0.1 <0.5 <0.5 <0.5 <50 <50 4 / 5 / 91 NA NA NA NA NA NA 6/15/91 NA NA NA NA NA NA 9/15/92 I~) I~) NA I~) NA NA 9/20/93 I~) I~D I~D I~D I~) I~) 12/9/94 I~) I~D I~) I~) 3/30/94 I~) I~) !~) I~D I~) 6/2/94 I~D I~ I~D I~D 8/23/94' I~D I~) I~) 1 I~) NA 12/5/94 I~D I~ I~ 0.8 I~ I~) 3/3/95 1.6 0.7 I~ 2.3 6/5/95 I~) I~ I~ I~D I~ NA NA -- Not Analzed NS = Not Sampled ND -- Below the Indicated detection limit as labeled In the analytical Labora~ Dry reports. Page 7 APPENDIX A GR 0 UND WA TER PURGE DATA SHEETS AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c.,~a,..~ ~t~t, · a,,,L,o,=,~,,~ co,~t,,,, AND WELL DEVELOPMENT DATA ~ ~m St. ~te 1~ · ~d, ~a ~13 ,,AMPLE ID OR WELL NO.: MW-1 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 20.31' TOTAL DEPTH OF WELL: 24.18' WELL DIAMETER: z" CASING VOLUME: .6;] GAL METHOD OF PURGING: BAILER INTAKE DEPTH SEC SAMPLE pH ~mhos/ CONTROL CUM. VOL. WELL (UNITS) (GAL) PUMPED cm) NO. 1 5.7 847 2 5.7 842 3 5.6 832 MW-1 REMARKS (COLOR, TURBIDITY, ETC.) DIRTY/SMELLY OILY FILM DIRTY/SMELLY OILY FILM DIRTY/SMELLY OILY FILM SAMPLE pH CALIBRATION / STANDARDI;]ATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 22.5' FT. FINAL DEPTH TO WATER 20.31 FT. 3 CASING VOLUMES = 1.8 GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c.,,~a,,.,~s~,,, · a,,,~e,,~ co.~,~.,~ AND WELL DEVELOPMENT DATA ~ ~m St. ~te 1~ · ~dd, ~ ~13 AMPLE ID OR WELL NO.: MW-lA PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 19.72' TOTAL DEPTH OF WELL: 61.50' WELL DIAMETER: 4" CASING VOLUME: 27.57 GAL METHOD OF PURGING: PUMP& BAILER INTAKE CUM. VOL. WELL DEPTH (GAL) PUMPED 5 10 20 30 40 pH (UNITS) SEC SAMPLE (pmhos/ CONTROL cra) NO. 7.4 320 7.4 3OO 7.3 297 310 REMARKS (COLOR, TURBIDITY, ETC.) NO ODOR, CLOUDY NO ODOR, SLIGHTLY CLOUDY NO ODOR, SLIGHTLY CLOUDY 318 326 304 NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR 5O 60 70 80 85 7.1 320 7.1 322 7.0 324 pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION IpH 4.011PH 7.0 TEMP °C INSTRUMENT READING IPH 10.0 MW-iA SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMEN?', READING SAMPLED AT 21 ' FT. FINAL DEPTH TO WATER 18.85 I 6868'1 58640 I FT. 3 CASING VOLUMES = SAMPLE @ 342 82.5 GALS. ,IOTES: A q u i.e n c ? ,coI lliO~St. Suite 100 · Bakersfield, California 93313 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA ~,MPLE ID OR WELL NO.: MW-2 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNI'ON DEPTH TO WATER: 20.53' TOTAL DEPTH OF WELL: 24.30' WELL DIAMETER: 2" CASING VOLUME: .62 GAL METHOD OF PURGING: BAILER INTAKE CUM. VOL, WELL DEPTH (GAL) PUMPED 1 2 3 pH (UNITS) SEC SAMPLE (pmhos/ CONTROL cm) NO. 6.2 464 6.1 474 6.0 448 MW-2 REMARKS (COLOR, TURBIDITY, ETC.) MUDDY, SUGHT ODOR MUDDY, SUGHT ODOR MUDDY, SUGHT ODOR SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION KCL SOLUTION / CM @ 25° C TEMP °C INSTRUMENT READING SAMPLED AT 22' FT. FINAL DEPTH TO WATER 19.25 FT. 3 CASING VOLUMES = 1.85 GALS. ,OTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c.,,~d,~,.~.~e,,~, · ~~co~.~ AND WELL D~ELOP~ENT DATA ~~m St. ~te 1~ * ~d, ~o~a ~13 AMPLE ID OR WELL NO.: MW-3 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 21.22' TOTAL DEPTH OF WELL: 23.70' WELL DIAMETER: 2" CASING VOLUME: .40 GAL METHOD OF PURGING: BAILER INTAKE CUM. VOL. WELL VOl. DEPTH (GAL) :PUMPED pH¸ (UNITS) SEC SAMPLE REMARKS (pmhos/ CONTROL cra) NO. (COLOR, TURBIDITY, ETC.) 5.7 1365 5.4 1414 5.3 1402 MW-3 CLOUDY, OILY FILM, ODOR .CLOUDY, OILY FILM, ODOR CLOUDY SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0I TEMP °C I INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 23' FT. FINAL DEPTH TO WATER 20.07 6868 I 58640 [ FT. 3'CASING VOLUMES = 1.21 GALS. ,OTES: ~" Grotmdwaeer Scientists · EnvLronmental Consultants 4440 Gttsaom St. $uite100 * Bakersfield, California 93313 · WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA .~AMPLE ID OR WELL NO.: MW-4 PROJECT NO.: PROJECT NAME: DAVIES OiL COMPANY DATE: 6/1/95 'SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: 29.70' UNKNOWN SEC SAMPLE pH ~mhos/ CONTROL, INTAKE CUM. VOL. (UNITS) OEPTH (GAL) cm) NO. REMARKS (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT __ FT. FINAL DEPTH TO WATER. FT. 3 CASING VOLUMES = NOTES: OBSTRUCTED BY TRUCK ON 6/5/95 COULD NOT PURGE OR SAMPLE GALS. AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c.,,o,.,d,~,..~ Sae.,.~.,. · a,,,~.~...,~ Co.,.,~.~... AND WELL DEVELOPMENT DATA 4440 C_,riseom St. Suite 100 * Bakersfield, California 93313 ~,MPLE ID OR WELL NO.: MW-5 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/1/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 19.48' TOTAL DEPTH OF WELL: 23.80' WELL DIAMETER: 2" CASING VOLUME: , .70 GAL METHOD OF PURGING: PUMP/BAILER INTAKE CUM. VOL. DEPTH (GAL) PUMPED 23' 1 1.5 2.5 SEC SAMPLE pH (pmhos/ CONTROL (UNITS) cra) NO. 9.0 491 8.0 456 MW-5 REMARKS (COLOR, TURBIDITY, ETC.) BROWN, NO ODOR DRY SAMPLE pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 20' F FINAL DEPTH TO WATER 22.40 FT. 3 CASING VOLUMES = ,OTES: 2.1 GALS. AquaGeosciences, Inc. WATER QUALFFY SAMPLING RECORD c~=,d,~,~, · ~,~,.,Co.~,,~ AND WELL DEVELOPMENT DATA 4440 GHssom SL Suite 100 · Bakersfield, C. aRfornla ~t313 AMPLE ID OR WELL NO.: MW-8 DEPTH TO WATER: OIL PROJECT NO.: TOTAL DEPTH OF WELL: PROJECT NAME: DAVIES OIL COMPANY WELL DIAMETER: DATE: 6/1/95 CASING VOLUME: METHOD OF PURGING: SAMPLED BY: CHRIS BOYNTON SEC SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED pH CALIBRATION / STANDARDIZATION TEMP 'C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE o CAUBRATION / STANDARDIZATION TEMP °C I INSTRUMENt, READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = GALS. .40TES: Io nZ. 4440GrL~om St. Suite 100 · Bakersfield, Ca]Eor~la g(3,313 WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA .AMPLE ID OR WELL NO.: MW-9 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/1/9 5 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: CAN'T LOCATE TOTAL DEPTH OF WELL: WELL DIAMETER: CASING VOLUME: METHOD OF PURGING: SEC SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. VOL WELL VOL (UNITS) cra) NO. (COLOR, TURBIDITY, ETC.) (GAL) PUMPED pH CALIBRATION / BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 , TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT FT. Fl' !AL DEPTH TO WATER FT. 3 CASING VOLUMES = NOTES: GALS. AquaGeosciences, Inc. WATER QUALFFY SAMPLING RECORD c_.-o,,~aw,,~s,:l~,,m,~ · ~.,i~,,,~,,,,~co,,,,~.,,~ AND WELL DEVELOPMENT DATA 4440 Gria$om St. Suite 100 · Bakersfield, California 9(K313 ,AMPLE ID OR WELL NO.: MW-lO PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 19.34' TOTAL DEPTH OF WELL: 27.0' WELL DIAMETER: 2" CASING VOLUME: 1.2 GAL METHOD OF PURGING: KV PURGE PUMP INTAKE ~,UM. VOL. WELL DEPTH (GAL) PUMPED SAMPLE REMARKS ~mhos/ CONTI~OL cm) NO. (COLOR, TURBIDITY, ETC.) 488 486 489 7.0 491 MW-lO SLT'LY CLOUDY, NO ODOR SLT'LT CLOUDY, NO ODOR SLT'LY CLOUDY, NO ODOR SLT'LY CLOUDY, NO ODOR SAMPLE pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 20' FT. FINAL DEPTH TO WATER 18.22 FT. 3 CASING VOLUMES = ,IOTES: 3.6 GALS. --- '"' : qua eosczences, Inc. WATERQUALITYSAMPLING RECORD c~o~a~ ~ · ~~ c~. AN D WELL DEVELOPMENT DATA ~~ St. ~te 1~ · ~d, ~a ~13 AMPLE ID OR WELL NO.: MW-11 DEPTH TO WATER: ZO.~l ['PROJE~ NO.: TOTAL DEPTH OF WELL: 26.58' PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: GABRIEL HALCON WELL DIAMETER: 2" CASING VOLUME: .1.0 GAL METHOD OF PURGING: PURGE PUMP INTAKE CUM. VOL, WELL VOL (GAL) PUMPED SEC SAMPLE REMARKS ~mhos/ CONTROL cm) NO. (COLOR, TURBIDrrf, ETC.) .5 806 ODOR 1 762 ODOR 1.5 7.7 764 ODOR 2 7.6 761 ODOR 2.5 7.5 750 ODOR 3 7.5 762 ODOR MW-11 SAMPLE pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 22' FT.. FINAL DEFTH TO WATER 19.30 6868 I 58640 FT. 3 CASING VOLUMES = 3 GALS. ~OTES: -- AquaGeoscie ¢e$, Inc. WATER QUALITY SAMPLING RECORD c~o~a,,~sd.,,.~. · ~~c~.~ AND WELL DEVELOPMENT DATA ~ ~m St. ~te 1~ · ~d, ~o~a ~13 _,'AMPLE ID OR WELL NO.: MW-1 la PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 19.25' TOTAL DEPTH OF WELL: 63.84' WELL DIAMETER: 4" CASING VOLUME: 28.8 GAL METHOD OF PURGING: PURGE PUMP INTAKE CUM. VOL. DEPTH (GAL) PUMPED SEC SAMPLE pH 0~mhos/ CONTROL (UNITS) cra) NO. 2 7.6 243 10 7.7 254 20 7.6 264 30 7.6 278 40 7.6 285 50 7.4 285 60 7.5 288 70 7,6 286 80 7.6 241 90 7.4 257 REMARKS (COLOR,~RBIDI~,~C.) NO ODOR NO ODOR TRACE ODOR NO ODOR NO ODOR NO ODOR NO ODOR NO ODOR, CLEAR NO ODOR, CLEAR pH CALIBRATION / STANDARDIZATION MW-11A TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAl_ CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 21' FT. FINAL DEPTH TO WATER 18.51 NO ODOR, CLEAR SAMPLE @ 1243 Fr. 3 CASING VOLUMES = 86.5 GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD r~,a~,.~s~.~ · ~,,~o.~ co~.~.~, AND WELL DEVELOPMENT DATA ~ ~m St. ~te 1~ * ~d, ~o~a ~13 ~AMPLE ID OR WELL NO.: MW-12 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: z 1.13' TOTAL DEPTH OF WELL: z7,30' WELL DIAMETER: 2" CASING VOLUME: 1 GAL METHOD OF PURGING: BAILER INTAKE 'CUM. VOL. WELL ~ DEPTH (GAL) PUMPED 1 2 3 pH (UNITS) SEC SAMPLE ~mho~/ CONTROL cm) NO. 6.7 496 REMARKS (COLOR, TURBIDITY, ETC.) OILY FILM, ODOR, LT. YELLOW OILY FILM, ODOR, LT. YELLOW OILY FILM, ODOR, YELLOW SAMPLE 6.4 501 6.3 506 ' MW-12 pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING I SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 22' FT. FINAL DEPTH TO WATER 19.99 FT. 3 CA$,;~ VOLUMES -- NOTES: 3 GALS. AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c,~,~a~s~,~,~, · s.,,u,~.,~co,~.,. AND WELL DEVELOPMENT DATA ~~St.~te 1~ · ~d,~ ~13 ,AMPLE ID OR WELL NO.: MW-lgA PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/1/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 19.74' TOTAL DEPTH OF WELL: 63.36' WELL DIAMETER: 6" CASING VOLUME: 64.1 GAL METHOD OF PURGING: PUMP& BAILER INTAKE CUM. VOL, WELL DEPTH (GAL) PUMPED 23' 0 40 65 80 115 1ZO 135 SEC SAMPLE pH 0Jmhos/ CONTROL (UNITS) cm) NO. 9.2 200 9.0 228 198 214 198 195 REMARKS (COLOR, TURBIDITY, ETC.) CLEAR, SLT. YELLOW, NO CLEAR, SLT. YELLOW, NO ODOi NO ODOR, CLEAR SLT. PETRO. ODOR, CLEAR SLT. PETRO. ODOR, CLEAR SLT. PETRO. ODOR, CLEAR SLT. PETRO. ODOR, CLEAR SLT. PETRO. ODOR, CLEAR SLT. PETRO. ODOR, CLEAR 6.5 189 6.5 187 6.5 211 150 175 195 6.5 189 SLT. PETRO. ODOR, CLEAR pH CALIBRATION / STANDARDIZATION MW-12A SAMPLE @ 1715 TEMP °C I INSTRUMENT READING ii ' SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING , SAMPLED AT 2:1' FT. FINAL DEPTH TO WATER 19.85 FT. 3 CASING VOLUMES = 19Z GALS. NOTES: ^" ; , ua, eosc ences, Inc. WATER QUALITY SAMPLING RECORD c.,.o~a,~,,~ sa~,,,~ · ~~ ~~ AND WELL DEVELOPMENT DATA ~~mSt.~l~ · ~~o~a ~13 oAMPLE ID OR WELL NO.: MW-~ 3 DEPTH TO WATER: 22.03' PROJE~ NO.: TOTAL DEPTH OF WELL: 48' PROJE~ NAME: DAVIES OIL COMPANY WELL DIAM~ER: 4" DATE: 6/5/95 CASING VOLUME: ~HOD OF PURGING: SAMPLED BY: CHRIS BOYNTON 17.1 GAL KV PURGE PUMP INTAKE DEPTH SEC SAMPLE REMARKS pH ~mhos/ CONTROL CUM. VOL. (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) (GAL) PUMPED 5 7.1 282 ODOR, YELLOW GREEN 15 7.0 285 ODOR, YELLOW GREEN 25 7.0 306 ODOR, YELLOW 35 7.0 302 ODOR, YELLOW 45 6.9 317 ODOR, YELLOW 55 6.9 319 ODOR, YELLOW SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION IPH 4.0llpH 7.0 PH 10.0 TEMP °C INSTRUMENT READING i SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION ,uMHOS / CM @ 25° C 74 718 I 1413 TEMP °C INSTRUMENT READING [ SAMPLED AT 2Z' FT. FINAL DEPTH TO WATER. 20.90 FT. 3 CASING VOLUMES = 51.3 GALS. NOTES: ^~ '~ :~tua~.,eosc~ences, Inc. WATER QUALITY SAMPLING RECORD c~o~a~~ · ~,~~co~ AND WELL DEVELOPMENT DATA ~O ~ St. ~te 1~ · ~d, ~ ~13 ~AMPLE ID 0R WELL NO.: MW-14 DEPTH TO WATER: NOT SAM~ED PROJE~ NO.: TOTAL DEPTH OF WELL: PROJE~ NAME: DAVIES OIL COMPANY WELL DIAM~ER: DATE: 6/1/9 5 CASING VOLU~E: ~HOD OF PURGING: SAMPLED BY: CHRIS BOYNTON SEC SAMPLE REMARKS pH ~mhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED pH CALIBRATION / STANDARDIZATION SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION TEMP °C INSTRUM, ENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES = GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD ~.o~a~s~u~ · ~~ c~.~ AND WELL DEVELOPMENT DATA ~0 ~m St. ~ 1~ · ~~ ~a ~13 .,AMPLE ID OR WELL NO.: MW-14A PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: CHRIS BOYNTON DEPTH TO WATER: 21.43' TOTAL DEPTH OF WELL: 6?.50' WELL DIAMETER: CASING VOLUME: ;>7.10 GAL METHOD OF PURGING: PUMP & BAILER INTAKE CUM. VOL, WELL VOl DEPTH (GAL) PUMPED 5 10 20 30 40 50 60 70 85 pH (UNITS) SEC SAMPLE REMARKS (pmhos/ CONTROL cm) NO. (COLOR, TURBIDITY, ETC.) 7.1 453 NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR NO ODOR, CLEAR 6.9 322 7.1 352 7.0 345 6.9 346 7.0 344 6.9 339 7.0 332 7.0 339 pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION TEMP °C INSTRUMENT READING pH 4.01[pH 7.0 pU 0.0 ' MW- 14A SPECIFIC ELECTRICAL CONDUCTANCE - CAUBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 23' FT. FINAL DEPTH TO WATER 21.40 FT. 3 CASING VOLUMES 81.3 __ GALS. NOTES: ^.. r~ :~Hua,.~eosczences,Inc. WATER QUALITY SAMPLING RECORD c~o~w,~~ · E.~~Co~ AND WELL DEVELOPMENT DATA 444~mSt. Su~telO0 · Bai0emfldd, C.~ffomta 93313 .AMPLE ID OR WELL NO.: MW-15 DEPTH TO WATER: 21.30' PROJECT NO.: TOTAL DEPTH OF WELL: PROJECT NAME: DAVIES O~L COMPANY WELL DIAMETER: 4" DATE: 6/5/95 CASING VOLUME: METHOD OF PURGING: SAMPLED BY: CHRIS BOYNTON 48.50' 18 GAL KV PURGE PUMP SEC SAMPLE REMARKS pH (pmhos/ CONTROL INTAKE CUM. VOL. WELL (UNITS) cm) NO. (COLOR, TURBIDITY, FTC.) DEPTH (GAL) PUMPED 5 7.3 446 CLEAR, NO ODOR 1 5 7.0 502 CLEAR, NO ODOR 25 6.8 439 CLEAR, NO ODOR 35 6.8 512 CLEAR, NO ODOR 45 6.9 501 CLEAR, NO ODOR 55 6.8 403 CLEAR, NO ODOR MW-1 5 SAMPLE pH CALIBRATION / STANDARDIZATION BUFFER SOLUTION pH 4.01 pH 7.0pH 10. TEMP °C INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SAMPLED AT 21' FT. FINAL DEPTH TO WATER 20.00 FT. 3 CASING VOLUMES = __ NOTES: 54 GALS. AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD oo~,a~sa~,~ · s,~o~co,~,~ AND WELL DEVELOPMENT DATA 4440 Griseom St. Suite 100 · Bakemfleld, California g3,313 ~AMPLE ID OR WELL NO.: MW-16 PROJECT NO.: PROJECT NAME: DAVIES OIL COMPANY DATE: 6/5/95 SAMPLED BY: GABRIEL HALCON DEPTH TO WATER: 17.72' TOTAL DEPTH oF WELL: 47.50' WELL DIAMETER: 4" CASING VOLUME: 19.54 GAL METHOD OF PURGING: KV PURGE PUMP CUM. VOL WELL (GAL) PUMPED 1 l0 20 30 4O SEC SAMPLE REMARKS pH (~mhos/ CONTROL (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) 7.1 Z 68 DIRTY 7.5 275 CLEAR, NO ODOR 7.5 293 CLEAR, NO ODOR 7.3 330 CLEAR, NO ODOR 7.3 353 CLEAR, NO ODOR 7.3 368 CLEAR, NO ODOR 7.3 371 CLEAR, NO ODOR MW- 16 SAMPLE 50 60 pH CALIBRATION / STANDARDIZATION TEMP °C INSTRUMENT READING SPECIFIG ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRUMENT READING SAMPLED AT 18' FT. FINAL DEPTH TO WATER 16.70 FT. 3 CASING VOLUMES = 58.32 GALS. NOTES: AquaGeosciences, Inc. WATER QUALITY SAMPLING RECORD c.,o~,t,~,~,~,~,, · a,,,i,o,,=~,,.~ ~,,~ AND WELL DEVELOPMENT DATA 4440Gtt~om St. Suite 100 · Baketsfl_eld, CalLfornia ~3313. AMPLE ID OR WELL NO.: RW-1 DEPTH TO WATER: NOT PROJECT NO.: TOTAL DEPTH OF WELL: PROJECT NAME: DAVIES OiL COMPANY WELL DIAMETER: DATE: 6/1/9 5 CASING VOLUME: METHOD OF PURGING: SAMPLED BY: CHRIS BOYNTON ACCESSIBLE SEC SAMPLE REMARKS pH (#mhos/ CONTROL INTAKE CUM. VOL. (UNITS) cm) NO. (COLOR, TURBIDITY, ETC.) DEPTH (GAL) PUMPED pH CALIBRATION / STANDARDIZATION TEMP °C , INSTRUMENT READING SPECIFIC ELECTRICAL CONDUCTANCE - CALIBRATION / STANDARDIZATION 718 1413 6868 58640 TEMP °C INSTRUMENT READING SAMPLED AT FT. FINAL DEPTH TO WATER FT. 3 CASING VOLUMES GALS. AOTES: APPENDIX B Laboratory Reports and Chain of Custody' ENVIRONMENTAL LABORATORIES Address Phone Sampled By (PRINT): Sampler Signature dad Report To: Bill To: P.O. # / Billing Reference Project Name / NO. ~..~Jj~/~_ ~,/L_ PRESERVATIVES ANALYSES REQUEST CHAIN-OF-CUSTODY RECORD Analytical Request Pace Client No. Pace Project Manager Pace Project No. "Requested Due Date: 1 2 3 4 5 6 7 8 REMARKS Additional Comments SEE REVERSE SIDE FOR INSTRUCTIONS OF¢IGINAL ENVIRONMENTAL LABORATORIES Address Report To: Bill To: '?"' ~_ 625 CHAIN-OF-CUSTODY RECORD Analytical Request Pace Client No. Pace Project Manager Sampled By (PRINT): Sampler Signature P.O. # / Billing Reference Project Name/No. .~.~d ~ ~-.~ PRESERV^TIVES REQUEST OIL- Pace Project No. 'Requested Due Date: 1 2 "3 4 5 6 ? 8 REMARKS qSr~ qq5 qsP~ qqS Additional Comments SEE REVERSE SIDE FOR INSTRUCTIONS ORIGINAl.. Halcyon Laboratories, [nc. California Department of Health Services Certificate No. 1920 Client: Aqua Geosciences Project Name: Davies Oil Address: 4440 Grissom St., Suite 100 Matrix: Aquious City/State/ZIP: Bakersfield, CA 93313 Analyst: Kim Dailey Phone: (805) 836-8100 Date Received: Jun 5, 1995 FAX: (805) 836~8800 Date of Analysis: Jun 17, 1995 Attention: Chris Boynton Date of this Report: Jul 7, 1995 Sampled By: Chris Boynton Analysis Performed: Total Petroleum Hydrocarbons (TPH) by California LUFT Manual Total Recoverable Petroleum Hydrocarbons (TRPH) by EPA Method 418.1 Lab Number: 95A499 95A500 95A501 95A502 95A503 Date Sampled: Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Sample Description: MW-11 MW-11A MW-16 MW-10 MW-lA Units:' ug/mL ug/mL ug/mL ug/mL ug/mL TPH as Gasoline: 1.622 0.85 ND ND 5.22 MDL: 0.5 0.5 0.5 0.5 0.5 TPH as Diesel: NA NA NA NA NA MDC NA NA NA NA NA TRPH: NA NA NA NA NA MDL: NA NA NA NA NA MDL: ND: NA: Method Detection Limit- the least amount of analyte that can be detected and reported. Not Detected- the analyte was present below the MDL and could not be detected and reported. Not Analyzed- analysis for this analyte was not performed. Michael Riccomini Laboratory Director 4440 Grissom St. Suite 100, Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Halcyon Laboratories, Inc. California Department of Health Services Certificate No. 1920 Client: Aqua Geosciences Address: 4440 Grissom St. Suite 100 City/State/ZIP: Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Attention: Chris Boynton Sampled By: Chris Boynton Analysis Performed: BTEX by purge and trap (EPA Method 5030/8020) Project Name: Davies Oil Matrix: Aqueous Analyst: Klm Dailey Date Received: Jun 5, 1995 Date of Analysis: Jun 17, 1995 Date of this Report: Jul 7, 1995 Lab Number: 95A499 95A500 95A501 95A502 95A503 Date Sampled: Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Sample Description: MW-11 MW-I lA MW-16 MW-10 MW-lA Units: ug/mL ug/mL ug/mL ug/mL ug/mL Benzene: ND 0.14 ND ND ND MOL: 0.1 0.1 0.1 0.1 0.1 'Toluene: 0.17 0.24 ND ND ND MDL: 0.1 0.1 0.1 0.1 0.1 Ethyl Benzene: ND 0.32 ND ND ND MDL: 0.1 0.1 0.1 0.1 0.1 TotalXylenes: 0.41 1.04 ND ND 0.18 MDL: 0.1 0.1 0.1 0.1 0.1 MDL: . ND.' NA: Method Detection Limit- the least amount of analyte that can be detected and reported. Not Detected- the analyte was present below the MDL and could not be detected and reported. Not Analyzed- analysis for this analyte was not performed. Michael Riccomini Laboratory Director 4440 Gdssom St. Suite 100, Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Halcyon Laboratories, Inc. California Department of Health Services Certificate No. 1920 Client: Aqua Geosciences Address: 4440 Grissom St., Suite 100 City/State/ZIP: Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Attention: Chris Boynton Sampled By: Chris Boynton Analysis Performed: Project Name: Davies Oil Matrix: Aqueous Analyst: Klm Dailey Date Received: Jun 5, 1995 Date of Analysis: Jun 17, 1995 Date of this Report: Jul 7, 1995 Total Petroleum Hydrocarbons (TPH) by California LUFT Manual Total Recoverable Petroleum Hydrocarbons (TRPH) by EPA Method 418.1 Lab Number: 95A504 95A505 95A506 Date Sampled: Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Sample Description: MW-14A MW-15 MW-13 Units: ug/mL ug/mL ug/mL TPH as Gasoline: ND 0.51 ND MDL: 0.5 0.5 0.5 TPH as Diesel: NA NA NA MDL: NA NA NA TRPH: NA NA NA MDL: NA NA NA MDL: Method Detection Limit- the least amount of analyte that can be detected and reported. ND: Not Detected- the analyte was present below the MDL and could not be detected and reported. NA: Not Analyzed- analysis for this analyte was not performed. Michael Riccomini Laboratory Director 4440 Grissom St. Suite 100, Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Halcyon Laboratories, Inc. California Department of Health Services Certificate No. 1920 Client: Aqua Geosciences Project Name: Address: 4440 Grissom St. Suite 100 Matrix: City/State/ZiP: Bakersfield, CA 93313 Analyst: Phone: (805) 836-8100 Date Received: FAX: (805) 836-8800 Date of Analysis: Attention: Chris Boynton Date of this Report: Sampled By: Chris Boynton Analysis Performed: BTEX by purge and trap (EPA Method 5030/8020) Davies Oil Aqueous Kim Dailey Jun 5, 1995 Jun 17, 1995 Jul 7, 1995 Lab Number: 95A504 95A505 95A506 Date Sampled: Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Sample Description: MW-14A MW~15 MW-13 Units: ug/mL ug/mL ug/mL Benzene: ND ND ND MDL: 0.1 0.1 0.1 Toluene: ND ND ND MDL: 0.1 0.1 0.1 Ethyl Benzene: ND ND ND MDL: 0.1 0.1 0.1 Total Xylenes: 0.22 ND ND MDL: 0.1 0.1 0.1 MDL: ND: NA: Method Detection Limit- the least amount of analyte that can be detected and reported. Not Detected- the analyte was present below the MDL and could not be detected and reported. Not Analyzed- analysis for this analyte was not performed. Michael Riccomini Laboratory Director 4440 Grissom St. Suite 100, Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Halcyon Laboratories, Inc. California Department of Health Services Certificate No. 1920 Client: Aqua Geosciences Address: 4440 Grissom St., Suite 100 City/State/ZIP: Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Attention: Chris Boynton Sampled By: Chris Boynton Analysis Performed: Project Name: Davies Oil Matrix: Aqueous Analyst: Klm Dailey Date Received: Jun 5, 1995 Date of Analysis: Jun 17, 1995 Date of this Report: Jul 7, 1995 Total Petroleum Hydrocarbons (TPH) by California LUFT Manual Total Recoverable Petroleum Hydrocarbons (TRPH) by EPA Method 418.1 Lab Number: 95A493 95A494 ~ 95A495 95A496 Date Sampled: Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Sample Description: MW-12 MW-2 MW-3 MW-1 Units: ug/mL' ug/mL ug/mL ug/mL TPH as Gasoline: 5.11 33.04 1.28 0.98 MDL: 0.5 0.5 1 0.5 TPH as Diesel: NA NA NA NA MDL: NA NA NA NA TRPH: NA NA NA NA MOL: NA NA NA NA MDL: ND: NA: Method Detection Limit- the least amount of analyte that can be detected and reported. Not Detected- the analyte was present below the MDL and could not be detected and reported. Not Analyzed- analysis for this analyte was not performed. Michael Riccomini Laborator,/Director 4440 Grissom St. Suite 100, Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 Halcyon Laboratories, Inc. California Department of Health Services Certificate No. 1920 Client: Address: CitylState/ZIP: Phone: FAX: Attention: Sampled By: Analysis Performed: Aqua Geosciences 4440 Grissom St. Suite 100 Bakersfield, CA 93313 (805) 836-8100 (805) 836-8800 Chris Boynton Chris Boynton Project Name: Davies Oil Matrix: Aqueous Analyst: Kim Dailey Date Received: Jun 5, 1995 Date of Analysis: Jun 17, 1995 Date of this Report: Jul 7, 1995 BTEX by purge and trap (EPA Method 5030/8020) Lab Number: 95A493 95A494 95A495 95A496 Date Sampled: Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Jun 5, 1995 Sample Description: MW-12 MW-2 MW-3 MW-1 Units: ug/mL ug/mL ug/mL ug/mL Benzene: 0.12 0.91 ND ND MDL: 0.1 0.1 0.2 0.1 Toluene: 0.25 3.18 0.8 ND MDL: 0.1 0.1 0.2 0.1 Ethyl Benzene: ND ND ND ND MDL: 0.1 0.1 0.2 0.1 Total Xylenes: 0.59 5.14 1.45 ND MDL: 0.1 0.1 0.2 0.1 MDL: ND: NA: Method Detection Limit- the least amount of analyte that can be detected and reported. Not Detected- the analyte was present below the MDL and could not be detected and reported. Not Analyzed- analysis for this analyte was not performed. Laboratory Director 44~J3 Grissom St. Suite 100, Bakersfield, CA 93313 Phone: (805) 836-8100 FAX: (805) 836-8800 ENVIRONMENTAL LABORATORIES A Client [! 6._(~ ~,. (,~ t:. ~:~,~ Address Phone Sampled By (PRINT): Sampler Signature Date Sampled · /~'/ ?'~'~'---'~__~ ( ~ ~.. 1 2 3 4 5 6 7 231627 CHAIN-OF-CUSTODY RECORD Analytical Request Report To:. Bill To:' P.O. # / Billing Reference Project Name / No. ~)/~. ~' I ~-'~" O ~ L,-- PRESERVATIVES ANALYSES REQUEST Pace Client No. Pace Project Manager Pace Project No. "Requested Due Date: .. REMARKS Additional Cc;nments SEE REVERSE SIDE FOR INSTRUCTIONS Cedificate No. 1920 Client: Aquageosciences, Inc 4440 Gdssom St. Suite 100 Bakersfield, CA 93313 Sampled by: Chds Boynton Project: Davies Oil Matrix: Water Analyst: Kim Dailey Date of Analysis: June 15,1995 Date of Report: June 19,1995 Tests: BTXE's by Purge and Trap (8020/$030) TPH as Gasoline (8015m/5030) Sample #: 95A497 95A498 Date Sampled: 6/1/95 6/1/95 Sample Description: MW-5 MW-12A *PQL Benzene. ND ND 0.02 Toluene ND ND 0.02 Ethyl Benzene ND ND 0.02 Xylenes ND ND 0.06 TPH Gasoline ND ND 2 · *PQL = Practical Quantitatlon Limit ND = Non-Detected at given PQL Michael o Laboratory Director +!.,!,0 Grissom St. Suite 100, Bakersfield, CA Phone: (,q05) 836-8100 FAX: (805) 836`8800 Groundwater Scientists * Environmental Consultants SOIL AND GROUNDWATER REMEDIATION PROJECT""'.... AT W.P. DAVIES OIL CO., INC. 3305 1/2 GULF STREET BAKERSFIELD, CALIFORNIA PRESENTED TO: MS. DOLORES GOUGH KERN COUNTY DEPARTMENT OF ENVIRONMENTAL HEALTH SERVICES PRESENTED BY: :.!i.'i ~ '.:~" AQUAGEOSCI:ENCES; INCi~ SEPTEMBER, 1993 . JOEL S. POMERENE; R.G.' #4724 OPERATIONS MANAGER. !. .G. #4779 PRINCIPAL HYDROGEOLOGIST REGISTRATION EXPIRES 6/30/94 1701 Westwind Drive, Suite 101 * Bakersfield, California 93301 (805) 3280962 * FAX (805) 328-1129 TABLE OF CONTENTS BACKGROUND PROJECT UNDERSTANDING SCOPE OF SERVICES Task 1 - Regulatory Liaison, Finalized Remedial Action Plan for Soil and Groundwater, and Project Schedule Task 2 - Quarterly Groundwater Monitoring Task 3 - Installation of Vapor Extraction Wells and System Manifolding Task 4 - Installation, Operation, and Maintenance of Vapor Extraction Remediation Unit Task 5 - Data Review and Re-Start Assessment of Groundwater Treatment Unit Task 6 - Confirmatory Bodngs Task 7- Final Report Task 8 - Equipment Decommissioning and Well Abandonment SCHEDULE 2 3 4 5 5 6 7 7 8 8 8 8 (, 1 September 15, 1993 Ms. Dolores Gough Kern County Department of Environmental Health 2700 "M" Street, Suite 300 Bakersfield, California 93301 Re: W.P. Davies Oil Co., Inc. Location: 33051/2 Gulf Street, Bakersfield, California Dear Ms. Gough: AquaGeosciences, Inc. (AGI) has been selected by Federated Insurance to implement remediation of the above mentioned site. The following submittal outlines our proposed approach to achieve closure at the site. This proposal is based upon information available at the Kern County Department of Environmental Health Services (KCDEHS) and the Central Valley Regional Water Quality Control Board. It addresses the activities and associated costs that AGI feels are necessary to achieve closure of the subject site. BACKGROUND Information generated by several pdor consultants including Delta Environmental Consultants, Inc., Aegis Environmental, Inc., and Associated Soil Analysis, Inc. reveal the presence of both soil and groundwater contamination by gasoline range hydrocarbons at the subject site. A total of seventeen (17) groundwater monitoring wells, (nine (9) two inch and eight (8) four inch diameter) have been installed on-site in addition to one 12-inch and one 6-inch diameter groundwater recovery well. The groundwater treatment system consists of a packed column air stripper for dissolved phase hydrocarbon removal with particulate and carbon filters in line at the effluent port pdor to discharge to an on-site infiltration gallery. During installation and operation of the treatment system in 1988 and 1989, the water table was relatively stable between 18 and 22 feet below ground surface (bgs). In February of 1990, the water table dropped below the bottom of the groundwater recovery well at 36 feet bgs due to regional drought conditions, rendering the remediation equipment temporarily inoperative. A soil vapor survey was conducted in November 1990 to establish the limits of hydrocarbon vapors in the soil. In January 1991, three (3) 4-inch diameter monitoring wells were installed downgradient of the plume and one 4-inch well upgradient to the north. Well depths ranged from 48.5 feet to 55.0 feet bgs. Groundwater analyses revealed benzene contamination above state action levels (SAL) in downgradient wells MW-13, MW-14, and MW-15. Upgradient well MW-16 showed non-detect (ND) 2 results for all analytes. MW-14 however, exhibited the highest levels of dissolved hydrocarbons due to its central position downgradient of the gasoline plume. All four · groundwater monitoring wells become dry in April 1991 due to a continuing decline of the water table. The deepest well was MW-13, completed to a depth of 55 feet bgs. In March 1992, four of the groundwater monitoring wells were twinned with deeper wells screened from 30_.to_9_0_._!~eet bgs to accommodate the declining water table. The new wells were designated MW-lA, MW-11A, MW-12A, and MW-14A. All wells were completed with 4-inch Schedule 40 PVC casing and liner, except for MW-12A, which was completed with 6-inch diameter PVC casing. A pump test was conducted on MW- 12A before plumbing it to the air stripper tower on-site. The groundwater remediation unit was apparently re-started in fall 1992, but due to Iow flow rates, high drawdown, and a continuing decline in the water table, was shut down once again a few months later near the end of 1992. The project has apparently been idle since that time. PROJECT UNDERSTANDING AGI's proposal is based upon a review of the available data at the Kern County. Department of Environmental Health Services and on written communications between that agency and W.R Davies Oil Company. The letter of May 28, 1993 on file from the KCDEHS to Mr. Bill Davies states in part that: "...this Department (KCDEHS) expects an effort on the part of Davies oil · Company to expedite the necessary work. Accordingly, this Department is requesting the following: Submittal of report for all work conducted by Aegis Environmental, Inc. for this project by June 10, 1993. Submittal of a finalized remedial action plan for both soil.and · groundwater by July 30, 1993. Commencement of a quarterly groundwater monitoring program using all existing wells by June 30, 1993. Submittal of report detailing all operational and management changes for this project." Additionally, your request for bid letter of June 15, 1993 specifies a "competitive, itemized bid package regarding additional clean-up related activities..." which AGI feels would be necessary to achieve closure at the site. AGI's proposal addresses all these points with the exception of Item 1 of the KCDEHS's letter. We can communicate the County's request to Aegis, but without their cooperation, the requested item cannot be generated independently. AGI has obtained recent site data indicating that the water table has dsen to within 30 feet, or less, of the ground sudace. Measurements made in RW-1, MW-11A, and MW- 16 revealed groundwater at 30.0'. 29.4', and 26.6', respectively. Bailer samples showed no free product in any of the three wells with only a slight odor in RW-1 and MW-11A. AquaGeosciences' proposal is therefore based on the cumulative information and current site conditions. With the apparent absence of free product and the dsing water table above 30 feet, AGI's focus will be on the installation and operation of a vapor extraction system (VES). Two of the existing monitoring wells will be converted to VES wells and the groundwater monitoring program will commence using all of the recently recharged wells. We anticipate the need for three new vapor extraction wells in the Pierce Plaza parking area and the conversion of two groundwater monitoring wells (MW-1 and MW-12) to address the soil vapor plume identified during the soil vapor survey conducted in November of 1990. The proposed well locations are based upon a radius of influence test conducted on October 17, 1992 by Associated Soils Analysis which demonstrated an effective radius of approximately 100 feet from test well RW-1. The VES wells in Pierce Plaza are ... expected to have a larger effective radius than that, since the surrounding areas are paved or covered by buildings, which eliminate the short-circuiting problems encountered in uncovered areas. Vapor extraction rates in the two converted wells located in uncovered areas (MW-1 and MW-12) will be controlled to maximize their radius of influence without short-circuiting to the ground surface. SCOPE OF SERVICES AquaGeosciences, Inc. proposes the following eight (8) tasks in order to meet the Kern County Department of Environmental Health Services requests stated in their letter of May 28, 1993 and to bdng the site to an acceptable level of environmental clean-up to achieve site closure: Task 1 - Regulatory Liaison, Finalized Remedial Action Plan for Soil and Groundwater, and Project Schedule; Task 2 - Quarterly Groundwater Monitoring; Task 3 - Installation of Vapor Extraction Wells and System Manifolding; Task 4 - Installation, Operation, and Maintenance of Vapor Extraction Remediation Unit; Task 5 - Data Review and Re-Start Assessment of Groundwater Treatment Unit; 4 Task 6 - Confirmatory Bodngs; Task 7- Final Report; Task 8 - Equipment Decommissioning and Well Abandonment. The proposed tasks are further described as follows: Task 1 - Reaulatorv Liaison, Finalized Remedial Action Plan for Soil and Groundwater. and Pro!ect Schedule AGI will represent Federated Mutual Insurance Company on behalf of W.R Davies Oil Company at meetings with the KCDEHS to establish a mutual understanding of the methods and cdteda necessary for site closure. AGI will also prepare a Finalized Remedial Action Plan (RAP) for Soil and Groundwater for submittal to the KCDEHS which will set forth the proposed treatment methods, equipment, and schedule by which site closure is expected to be achieved. The RAP will also include vapor.extraction well installation and manifolding plans; vapor, soil, and groundwater sampling protocols; confirmatory sampling, procedures toward site closure, and a site specific health and safety plan. Task 2 - Quarterly Groundwater Monitoring The existing monitoring wells associated with the. site will be purged .and- sampled for the third quarterly monitoring pedod of 1993. The wells will be sampled in accordance with State of California and Kern County protocols. In summary, the following procedures will be followed: The wells will be approached in order from least.to most contaminated; the sequence based on previous information. A Solinst water level indicator will be used to measure water levels in the wells from a designated top of casing mark (north side of casing) and total well.depth. This data will be used to calculate the volume of water within the casing. At this time the wells will be checked for the presence of free product using a clear bailer; Four casing volumes of water will be removed from each well using either a battery operated purge pump .or a hand bailer. The pump or bailer will be decontaminated with an Alconox solution and double dnsed in clean deionized water between wells. At regular intervals during the purging process, measurements of pH, conductivity and temperature will be made. Samples will be collected after readings have stabilized within ten percent (10%) of the previous readings to ensure that the samples are representative of the aquifer; Samples will be collected in dedicated disposable bailers and transferred to two (2) 40 mi VOA vials supplied by the laboratory. The vials will be labeled, sealed, wrapped in bubble wrap, and placed into coolers maintained at 4° Centigrade for transport to the laboratory under Chain-of-Custody protocols; Samples will be analyzed at PACE Laboratories (Federated's contract Lab) a State of California certified laboratory for BTEX and Total Petroleum Hydrocarbons as gasoline by EPA Methods 8020 and 602, · respectively. As an additional QA/QC procedure, duplicate samples will be collected from each well, and a travel blank will be included. Duplicates and travel blanks will be held at the laboratory until the results are available, and then analyzed if necessary to vedfy anomalous readings; Quarterly reports which detail field activities, sampling procedures, and analytical results will be prepared and presented after each event. The report will include a potentiometric surface map indicating groundwater flow direction and gradient, as well as the current status of the remediation project with schedule updates. Task 3 - Installation of Vapor Extr~actiQn Wells and System Manifolding Three (3) vapor extraction wells are proposed, all of which fall in tlie Pierce Plaza parking area southwest of the site. VE-1 will be located approximately 25 feet southwest of soil vapor probe point SP-13, VE-2 will be installed about 30 feet south of SP-11, and VE-3 will be placed approximately 30 feet south of SP- 5. These locations provide vacuum extraction coverage of the southeastern, southern, and western ends of the soil vapor plume,.using a 100 foot radius of influence figure. The vapor extraction wells will be constructed of 2-inch Schedule 40 PVC casing with 0.040" slots from 30 to 10 feet below ground sudace. The filter pack will be comprised of aquarium grade sand, placed to one foot above the liner slots. A two foot bentonite seal will be placed on top of the sand pack, hydrated with clean tap water, followed by a five sack cement-sand slurry to just below surface grade, where a steel traffic box will be installed to protect the wellhead. It will also be equipped with a PVC Tee connection and slip cap, as well as a 2-inch ball valve on the manifold line, enabling each well to be configured as either an inlet or extraction well. 6 Each of the three wells will be carefully logged for lithologic descriptions and soil samples will be collected at 5 foot intervals for laboratory analysis as required. The VES wells will be manifolded with 2-inch Schedule 40 PVC line to a 150 CFM blower/thermal oxidizer remediation unit. Monitoring wells MW-1 and MW- 12 will also be added to the manifold to complete the vapor extraction well pattern. Task 4 - Installation. O_Deration. and Maintenance of Vapor Extraction Remediation Unit A 150 CFM thermal, oxidizer unit will be ordered and installed concurrent with the installation of the vapor extraction wells and manifolding. The proposed vapor remediation unit will use a natural gas fired oxidizer to destroy the hydrocarbon vapors extracted from the soil. AGI professional staff, experienced in vapor extraction technology, will conduct and supervise the installation of the system and ensure compliance with the workplan, equipment specifications, and AGI quality control requirements. The operations and maintenance of the system is to include all materials and supplies necessary to conduct normal operational activities such as field screening, systems checks and adjustments, and regular lubrication and maintenance. Catastrophic failures due to circumstances beyond AGI's control are not covered under normal operations and maintenance. A strip chart recorder will be included with the thermal oxidizer unit in order to monitor and record it's performance on a continuous basis. Given the existing site data, remediation is expected to be achieved in approximately twelve (12) months of continuous VES system ~operation. The vapor extraction treatment unit will consist of a 150 CFM natural gas fired thermal oxidizer. The equipment supplier is Environmental Instruments Co. (El) located in Santa Ana, California. Task 5 - Data Review and Re-Start Assessment of Groundwater Treatment Unit A critical review of the groundwater analytical data generated by the renewed sampling program will be conducted to evaluate the potential effectiveness of re-starting the groundwater treatment unit. As suggested in pdor correspondence between Federated and other consultants, it may be more cost effective at this point, due to declining hydrocarbon contamination levels, to bypass either the air stripper section or the carbon adsorption vessels of the groundwater treatment unit during this final phase of groundwater remediation. This feasibility review is expected to generate supportable conclusions and recommendations regarding the re-starting of the groundwater treatment unit. 7 Task 6 - Confirmatory_ Bodngs At such time that vapor extraction and quarterly groundwater monitoring, in conjunction with field screening records indicate that the remedial goals have probably been met, AGI will advance two (2) confirmatory soil bodngs at appropriately representative locations to confirm that site remediation has been accomplished. Soil bodngs will be advanced using a CME-75 hollow stem auger ddlling dg, or equivalent, in accordance with established drilling and sampling protocols. Soil samples will be collected at five (5) foot intervals in brass sample sleeves, and sealed, stored, recorded on Chain-of-Custody documents, and transported in a chilled cooler at 4° centigrade for analysis at a State Certified laboratory. The soil samples will be analyzed for TPH-gasoline and BTEX by EPA Methods 8015 modified and EPA 8020, respectively. Task 7- Final Rebert Following satisfactory completion of the remediation project (generally two consecutive quarters of non-detect (ND) benzene results for groundwater and trace to non-detect TPH-g in soil vapor) AGI will prepare a final "Closure Report". It will summarize the project history, the remedial actions undertaken, field activities and treatment equipment, laboratory analytical data, confirmation sampling results, and closure cdteda for the site. Based upon the project data, the report will conclude with a recommendation for site closure. Task 8 - Equipment Decommissionina and'Well Abandonment Upon confirmation that the remediation has met the required closure cdteda,~ AGI will remove and/or abandon in place all man-made conduits, lines, wells, and manifolds associated with the project. The equipment used on site will be disconnected, prepared for shipping, and finally transported from site to the appropriate destinations. All groundwater monitoring wells will be grouted to the surface with a neat cement and bentonite slurry flush with surface grade ' following traffic box removal.. SCHEDULE AquaGeosciences, Inc. anticipates beginning the work described in this proposal within two (2) weeks of authorization to proceed from client. A bar graph (Figure 1) illustrates the proposed schedule. Task 1- Remedial Action Plan is expected to require two (2) weeks. Task2- Quarterly Groundwater Monitoring will begin concurrent with Task 1 and will require 'approximately four (4) weeks for submittal of the first report with the current groundwater well status and analytical results. Task :~ - Vapor Extraction well installation and manifolding will take approximately four (4) weeks to complete following workplan approval and dght of entry agreements wit the Pierce Plaza owners. Task 4 - Installation and operation of the vapor extraction surface equipment 8 will require approximately four (4) weeks and will be done concurrent with Task 3. Start-up of the unit will depend upon the time frame involved in obtaining an authority to construct (ATC) permit from the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) and following that, a permit to operate (PTO) for sustained equipment operation. Should a source test be required for this unit prior to permitting, another two (2) weeks may be added to the schedule. Vapor extraction remediation (operations and maintenance) is expected to require one (1) year. Task5- Data Review and Re-Start Assessment of groundwater treatment unit will be accomplished approximately four (4) weeks after submittal of the first qUarterly groundwater monitoring report. Task6- Confirmatory bodngs will be accomplished within one (1) week of the decision to test for closure. Analytical data can be received in a normal two (2) week turnaround. Task 7 - The final closure report will be generated within four (4) weeks of receipt of the .confirmatory soil bodng analytical data. Task8 - Equipment Decommissioning and Well Abandonment will require approximately four (4) weeks after closure approval from the Kern County Department of Environmental Health Services. 9 ,~'IENTAL HEALTH sF-~RVICES DEPARTMENT dDOUS MATERIALS MANAGEMENT PROGRAM /'~VI" STREET, SUITE 300 ,~KERSFIEI-D, CA 93301 Circle One: HLTH (805) 861-3489 ~ MONITORING WELL APPUCATiON C STRU -- MODIFY DESTROY 'No. or We. /o II Fro No. [Mw No. ts~ II For Office Use Only FACILITY 12qFORMATION Projexl Contact: Z~//// D ,~ ~-/' f Phone: T/R/Sec: Faci.lity Na~.e: ~).~ ~.-r'~ O .'/~o . Facility Pho~: Address: =~ j o ~ ~'z. ~, ./.eq'..rT. City: Z~',~ ,,fi,,..r ?z'}e~/,~ Zip: Owner: 455',// Z2 ~ e--' ~,/' · Address: .~ 3 o .,~',_ ~a-,/,,Z' ,.d ~'. City:. B. CONTRA~OR INFORMATION city:. Phone: Zip: z3 C. ENVIRONMENTAL INFORMATION Phone: Zip: .. W.C. No.: ~th to Groundwater. ~ ..),.~=-' f~.. ~-- Lithology Log Reviewed ~: ,~,4','/,' VedfledBy: Re No.: D. PROIECT INFORMATION Propose. Start Uale: J'./,v' C, /iF ? ~ Proposed Compledou Date: J',~/'?,, ,~o/ ,/~ ? ~: _ Typ~ of Well (Circle ?,ne): .?.r.o,undwater' . Vadose Zone Test Hole /~,'~. HMI23 ? ~9~ 0~:03 KERM~CO EMV HLTH (80~)861-3~9 CONSTRUCTION INFORMATION THOD .,~ WELL I WELL 2 WELL 3 WELL 4 WELL DEPTH GROUND ELEVATION BOREHOLE DIAMETER CASING-INSIDE DIAMETER SCREEN MATERIAL &,GAUGE TYPE OF BENTONITE ~, PLUG & DEPTH ANNULAS SEALANT MATERLM~ a DEPTH FILTER PACK $~. d J.. ~ O'°- d J.. ~'. MATERIAL & SIZE SCREEN SLOT SIZE & LENGTH 3&'.f'-~,,,'o ' 3~.,c'-,vo ' J2.Y'- Va ' 2.~..r- ~,~ ' SEALANT PLACEMENT LOCKING, WELL CAP FACILITY PLOT PLAN Provide a description of the facility to be monitored, including: location of tanks, proposed monitoring and placement, nearest street or intersection, location of any. water wells or surface water within 500' radius of facility. Please attach. WELL DIMENSIONS Provide a detailed drawing of well(s). Include: depth of well, casing length, green/filter pack length, annular sealants, and well cap. Note any irregularities. Please attach. ZONE OF INFLIYENCE Information on zone of influence, such as mathematical calculations or field test data, VADOSE ZONE WELLS may be required upon review of the application. NOTE: If application is not complete it may be returned. HMI23 '? '94 88:83 KERN CO EHV HLTH (805)861-3429 ( P.3 CONSTRUCTION INFORMATION DEP GROUND E~VA~ON C~ING-~S~E C~O ~~ & GAUGE SC~EN & GAUGE PLUG & DEP~ ~~ PACK SCR~ SLOT S~ P~CEM~ LO~G FACIL1TY PLOT PLAN Provide a description of the facility to be monitored, including: location of tanks, proposed monitoring and placement, nearest street or intersection, location o£ any water Wells or surface water within $00' radius of facility. Please attach. WELL DIMENSIONS Provide a detailed drawing of well(s). Include: depth of well, casing length, screen/filter pack length, annular sealants, and well cap. Note any irregularities. Please attach. ZONE OF INFLUENCE Information on zone of influence, such as mathematical calculations or field test data, VADOSE ZONE WELLS may be required upon review of the application. NOTE: If application is not complete it may be returned. HMI23 '94 08:03 KERN ( HLTH (805)861-34~9 // CONSTRUCTION INFORMATION i/ WELL WELL DEPTH ~'~ GROUND ELEVATION (ri= KNOWN) BOREHOI-~ DL4METER ~/' ~ /' CASING-INSIDE DIAMETER CASING MATERIAL SCREEN MATERIAL ,°~'c &GAUGE J',;g /,6 J",.d F-~ TYPE OF BEaNTON1TE PLUG & DEPTH ANNLTLAS SEALANT MA~ & DEPTH 0 -" 3 ~,...;" o :' J ,I. ..,- ' FILTER PACK SCREEN SLOT SIZE SEALANT PLACEMENT METHOD 7~,;, ~. }, 7'~"~ · LOCKING WELL CAP FACILITY PLOT PLAN Provide a description of the facility to be monitored, including: location of ranks, pro~sed monitoring and placement, nemrest street or intersection, location of any water wells or surface water withi~ 500' radius of facility. Please attach. WELL DIMENSIONS Provide a detailed drawing of well(s). Include: depth of well, casing length, screen/filter pack length, annular sealants, and well cap. Note any irregularities. Please attach. ZONE OF INFLUENCE Information on zone of influence, such as mathematical calculations or field test data, VA.DOSE ZONE WELLS may be required upon review of the application. NOTE: If application ia not complete it may be returned. HMI23 Gravel []/ 4 6 KEY GROUNDWATER MONITORING WELLS PROPOSED AIR SPARGE WELLS SCALE 1"=20' o/ MW-12a VES AquaGeosciences, Inc. 1701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 M~O-4 MWdla ..... '~-~ ] ®/ ? MW-Il Fence J AIR SPARGE LAYOUT EXHIBIT 1 Parking Open Spac~ I North I I Scale 1'= 125' I Stornge Area I I _ ._! .~dW-14 ~'MW-15 Pipe Storage PIERCE ROAD Jim's Steel and Supply Teamsters Local Union No. 87 Truck Wash Rush Swoape Properties Kernville Stage And Freight Open Lot / [ [m Truck Parking I ,' · ~:~:~i:~::~?:~i~i~ii~!??:~::~ P~' ' i:i:i:i:iiiiiiii:i:i:i:i:i:i:ii:i:i:i:i [ I , ~ MW-11 a o I [ o ..... P '~ P '~ i:i::"-"i:i:i:i:i:~:i:i::'::!:!:i:!:ii~ s .... , - ~ ' Davies Oil Company I MW-4'I~ [ '~'lJ S~m'~S~ . Islands Infiltration Gallery AquaGooscioncos, Inc. 1701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA ADJACENT PROPERTIES DIAGRAM EXHIBIT 3 II [ I - Underground Tank MW-8 "~+ MW-Ila i+ RW-I -~MW-la NUnderground Storage Tank Underground Storage Tanks MW-3 + Building Davies Oil Company Pump Islands Scale 1"= 62.5' AquaGeoscionces, Inc.. 701 Westwind Drive, Suite 103 Bakersfield, California 93301 Telephone: (805) 328-0962 Fax: (805) 32801129 DAVIES OIL COMPANY BAKERSFIELD, CALIFONIA SITE MAP Natural Gas penser Infiltration Galle~ ~Monitoring EXHIBIT 2 amuncl surfnce- Self threading 3/8" male brass fitting "PVC slip er d cap Schedule 40 PVC Casing 6" boring Portland Cement Seal 25 feet roundwater level 36.5' 38.5' /12 sand pack Micro-porous Sparge Point 40' Diagram Not to Scale ^quaGeosciences, Inc. 1701 Westwind Drive, Suite 103 Bakemfieid, California 93301 Telephone: (805) 328-0962 Fax: (805) 328-1129 Title Air Sparge Well Assembly Wells 1 through 10 Exhibit 11:44 arr~ KERN CO ,'~,r_ouU,,;CE ~VlANAGE?4EN'F AGENCY '2700 8ake;"s f q e'i d CA P^GE [ ,'~ ~,-'o 'f c'= ?,.ibc i 1 CASH REGISTER AQUA GEOSCIENCES iNC Customer' P.O.: H0627941 CSR I 06/2?/94 i 08/2?/94 t 4751 HAZ~AT NELLS MONITORING 'I NELL I HMN003A 2 4751HAZ~AT NELL ~ON~TOR~NG >I NELL 9 H~003B Ntr~ By IO;"der' Daue I Shffp Oat~ 1 I CK 4445 DF 335.00 50.00 Or'der' NT To~ 335.00 450.00 785.00 Amount Due Payment Hade By Check 785.00 785.00 ~H~,NK YOUr CaFEPA State Water Resources Control Board Division of Clean Water Programs Mailing Address: P.O. Box 944212 Sa~amento, CA 94244-2120 2014 T Street, Suite 130 Sacramento, CA 95814 (916) 2274307 FAX (916) 227-4530 World Wide Web: http://www, swrcb.ca. gov/--c~'phome/ fundhome.htm Pete Wilson Governor W. P. DAVIES OIL COiVIPANY P O BOX 80067 BAKERSFIELD, CA 93380 UNDERGROUND STORAGE TANK CLEANUP FUND, CLAIM NO. 001133, FOR SITE ADDRESS: 3305 GULF ST, BAKERSFIELD The State Water Resources Control Board (State Board) is able to issue, pursuant to applicable regulations, the enclosed Letter of Commitment (LOC) in an amount not to exceed $170,000. This LOC is based upon our review of the corrective action costs you reported to have incurred to date. The LOC may be modified by the State Board. It is very important that you read the terms and conditions in the LOC. The State Board will take steps to Withdraw this LOC after 90 calendar days from the date of this letter unless you proceed with due diligence with your cleanup effort. NOTE: You must also submit your first reimbursement request for the costs that you reported to have incurred within 90 calendar days from the date of this letter or submit a written explanation as to the status of the cleanup and when a reimbUrsemerit r'equest ca~n be expected. Failure to submit a request or an approved explanation may result in the removal of committed funds. Claims filed with the Underground Storage Tank Cleanup Fund far exceed the funding available and it is important that you make use of the funding that has been committed to your cleanup in a timely manner. You are reminded that you must comply with all regulatory agency time schedules and requirements and you must obtain three bids for any required corrective action. Only corrective action costs required by the regulatory agency to protect human health, safety and the environment can be claimed for reimbursement. Unless waived in writing, you are required to obtain preapproval of costs for all future corrective action work (form enclosed). If you have any questions on obtaining preapproval of your costs or the three bid requirement, please call Mel Jacobo, our engineer assigned to claims in your Region, at (916) 227-4322. Failure to obtain preapproval of your future costs may result in the costs not being reimbursed. Recycled Iaper Our mi.rsion is to preserve and enhance the quality of'Cahfbrnia's water resource.v, and ensure !llc/r proper allocation and effic/ent use fbr the benefit of'present ~tnd fitture generations. W. P. DAVIES OIL COMPANY Page 2 The following docUments needed to submit your reimbursement request are enclosed: "Reimbursement Request Instructions" package. Retain this package for future reimbursement requests. These instructions must be followed when seeking reimbursement for corrective action costs incurred after January 1, 1988. Included in the instruction package are samples of completed reimbursement request forms and spreadsheets. "Bid Summary Sheet" to list information on bids received which must be completed and returned. "Certification of Non-Recovery From Other Sources" which must be returned before any reimbursements can be made. "Reimbursement Request" forms which you must use to request reimbursement of costs incurred. "Spreadsheet" forms which you must use in conjunction with your reimbursement request. "Claimant Data Record" (Std. Form 204) which must be completed and returned with your first reimbursement request. We continuously review the status of all active claims. If you do not submit a reimbursement request or fail to proceed with due diligence with the cleanup, we will take steps to withdraw your LOC. If you have any questions regarding the enclosed documents, please contact Pamela Rarick at (916) 227-2784. Enclosures Mr. Joe Can'as Kern County EHD 2700 M Street, Suite 300 Bakersfield, CA 93301 ~ Rec)'clcd Paper Our mtssion ~s to preserve and enhance the quality of Califbrnia's water resources, and ensure ,herr proper allocatton and efficient u.~'e fi~r the benefit of present and fitture generations. LETTER O:' ~IMITMENT FOR REIMBURS( OF COSTS CLAIM NO: 001133 CLAIMANT: W.P. DAVIES OIL COMP~uNY CO-PAYEE: FEDERATED MUTUAL INSURANCE JOINT CLAIMANT: NONE AMENDMENT NO: 0 BALANCE FORWARD: 0 THIS AMOUNT: $170,000 NEW BALANCE: $170,000 CLAIMANT ADDRESS: P O BOX 80067 BAKERSFIELD, CA 93380 TAX ID/SSA NO: 95-2307612; 41-0417460 Subject to availability of funds, the State Water Resources Control Board (SWRCB) agrees to reimburse W. P. DAVIES OIL COMPANY (Claimant) for eligible corrective action costs at DAVIES OIL CO. AND CARDLOCK 3305 GULF ST, BAKERSFIELD, CA 93308 (Site). The · commitment reflected by this Letter is subject to all of the following terms and conditions: 1. Reimbursement shall not exceed $170.000 unless this amount is subsequently modified in writing by an amended Letter of Commitment. 2. The obligation to pay any sum under this Letter of Commitment is contingent upon availability of funds. In the event that sufficient funds are not available for reasons beyond the reasonable control of the SWRCB, the SWRCB shall not be obligated to make any disbursements hereunder. If any disbursements otherwise due under this Letter of Commitment are deferred because of unavailability of funds, such disbursements will promptly be made when sufficient funds do become available. Nothing herein shall be construed to provide the Claimant with a right of priority for disbursement over any other claimant who has a similar Letter of Commitment. 3. All costs for which reimbursement is sought must be eligible for reimbursement and the Claimant must be the person.entitled to reimbursement thereof. 4. Claimant must at all times be in compliance with all applicable state laws, rules and regulations and with all terms, conditions, and commitments contained in the Claimant's Application and any supporting documents or in any payment.requests submitted by the Claimant. 5. No disbursement under this Letter of Commitment will be made except upon receipt of acceptable Standard Form Payment Requests duly executed by or on behalf of the Claimant. All Payment Requests must be executed by the Claimant or a duly authorized representative who has been approved by the Division of Clean Water Programs. 6. Any and all disbursements payable under this Letter of Commitment may be withheld if the Claimant is not in compliance with the provisions of Paragraph 5 above. 7. Neither this Letter of Commitment nor any right thereunder is assignable by the Claimant without the written consent of the SWRCB. In the event of any such assignment, the rights of the assignee shall be subject to all terms and conditions set forth in this Letter of Commitment and the SWRCB's consent. 8. This Letter of Commitment may be withdrawn at any time by the SWRCB if completion of corrective action is not performed with reasonable diligence. IN WITNESS WHEREOF, this Letter of Commitment has been issued by the SWRCB this 271h day of March, 1997. STATE WATER RESOURC'KS CONTROL BOARD os$o.s6~.o~-~o~Jo / ~;~?Manager, Underground Storage Tank Cleanup Fund Program C~£ef, Division Administrative Services ENVIRONMENTAL HEALTH SE' STEVE McCALLEy, R.E.H.S., Director 2700 "M" STREET, SUITE 300 BAKERSFIELD, CA 93301 Phone: (805) 862-8700 FAX: (805) 862-8701 ~S DEPARTMENT .f~.RCE MANAGEMENT AGENcy DA VID PRICE III, RMA DIRECTOR Engineering & Survey Services Department Environmental Health Services Department Planning Department Roads Department October 3, 1996 REMEDIAL ACTION COMPLETION CERTIFICATION Mr. William Davies Davies Oil Company P.O. Box 80067 Bakersfield, CA 93306 SUBJECT: UNDERGROUND STORAGE TANK (LIST) CASE Location: 3305 la Gulf street, Bakersfield, CA Known As:' Davies Oil Site No.: 050072 Dear Mr. Davies: This letter confirms the completion of site investigation and remedial action for the underground storage tank(s) fOrmerly, located at the above-described location. Enclosed is the Case Closure Summary for the referenced site for your records. Based on the available information, including the current land use, and with the provision that the information provided to this agency was accurate and representative of site conditions, no further action related to the underground tank release is required. This notice is issued pursuant to a regulation contained in Title 23, California Code of Regulations, Division 3, Chapter 16, Section 2721 (e). (If a change in land use is proposed, the owner must promptly notify this agency.) Please telephone Dolores Gough at (805) 862-8728, if you have any questions regarding this matter. Steve McCalley, Director - ~ Environmental Health Services De~lnment Enclosure cc: CV RWQCB State Board, Underground Tank Program f CASE CLOSURE SLI~ 'ARY ~aaking Underground Fuel Storage Tank Program I. Agency Information. Agency Name: KERN COUNTY' ENV. HEALTH sERvICES DEPT. Date: April 12, 1996 Address: 2700 'qM" STREET, SUITE 300 City/State/Zip: BAKERSFIELD, CA 93301 Phone: (805) 862-8728 Responsible Staff Person: DOLORES GOUGH Title: HAZ. MATERIALS SPECIALIST II. Case Information Site Facility Name: DAVIES. OIL COMPANY CARDLOCK SALES Site Facility ~ddress: 3305 m GULF ST., BAKERSFIELD, CA 93308 RB LUSTIS Case No: I Local Case No: 050072 I LOP Case No: URF Filing Date: SWEEPS No: Responsible Party Addresses Phone Numbers DAVIES.. OIL CO. P.O. BOX 80067, BAKERSFIELD, CA 93306 (805) 323-6063 c/o WILLIAM DAVIES Tank No. Size in Gal. 'Contents Closed in-place/Removed Date 1 10,ooo DIESEL REMOVED 10m/86 2 10,000 'DIESEL REMOVED 10/31/86 3 101000 DIESEL REMovED 10/31/86 III. Release and Site Characterization Information cause and type of release: GASOLINE DISPENSING SYSTEM/LINES Site characterization complete? ['~ Yes [] No I Date approved by oversight agency: july 1993 Monitoring Wells Installed? ~]Yes [] No ,I Number:. lC~ [ Proper screened interval? [r/~ Ye~ []No ltighest GW depth below ground surface: 14 I Lowest depth: 41 .I Flow direction: SW I Most Sensitive Current Use: NONE Are drinking water wells affected? [] Yes '1~ No Aquifer name: Is surface water affected? [] Yes ~] No Nearest/affected SW name: Off-site beneficial use impacts ~addresses/locations): NONE [] Yes ""[] No I Where is report(s) filed? KC Env. Health File Report(s) f'fle? on Treatment and Disposal of Affected Material Material Amount (Include Action (Treatment or Disposal w/Destination) Date Units) Tank 3 DISPOSED OFFSITE (DESTINATION INFO NOT ON FII Piping Free Product Soil < 10 CU YDS AERATED ON SITE 1992 Groundwater Barrels ( Case Closure Summ: Leaking Underground Fuel Storage Tank Program III. Release and Site Characterization Information (continued) Page 2 Maximum Documented Contaminant Concentrations - - Before and After Cleanup Soil (ppm) Water (ppm) Soil (ppm) Water (ppm) Contalxlinant Contaminant Before After Before After Before After Before After TPH (Gas) 750 2.3 240 1.7 Xylene 6.2 0.02 42 0.002 TPH (Diesel) 1150 ND 29 ND Ethylbenzene - ND Z7 ND Benzene 8.2 ND 10 ND Oil & Grease ...... Toluene 4.0 ND 89 ND Heavy. metals ...... Other Other Comments (Depth of Remediation, etc.): SOIL AND GROUNDWATER WERE REMEDIATED BY PUMP & TREAT, VAPOR EXTRACTION AND AIR SPARGING. CONTAMINANTS' LEVELS FROM OFF SITE WELL MW-14 WERE NOT INCLUDED ABOVE. IV. Closure Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? [] Yes [] No Does completed corrective action protect potential beneficial Uses per the Regional Board Basin Plan? []Yes [] No Does corrective action protect public health for current land use? [] Yes [] No Site management requirements: None Should corrective action be reviewed if land use changes? [] Yes [] No Monitoring Wells Decommissioned: [-'~Yes [] No I Number Decommissioned: Nmnber Retained: List enforcement actions taken: None List enforcement actions rescinded: None V. Local Agency Representative Data Name: DOLORES GOUGH [ Title: VI. RWQCB Notification HAZARDOUS" MAT~ERIALS SPECIALIST Date Submitted to RB: Response: RWQCB Staff Name: YI PAN ITitle. Date: VH. Additional Co tents, Data, etc. Investigation at this site began in late 1985 when a leak from one of the gasoline product lines was detected. A few months later, another leak was discovered from the vapor lines. Both leaks were fixed and the facility reported a loss of approximately 2500 gallons of regular gasoline. In October 1995 three of their underground storage diesel tanks were removed because they were no longer in use. Soil sampling beneath the tanks indicated the presence of diesel contamination. Subsequent subsurface investigations for both releases showed groundwater was impacted mo.stly with gasoline. From 1987 to 1992, nineteen (19) groundwater wells were installed on and off site to investigate the plume. Groundwater remediation by pump and treat (air stripping) was initiated at the site in late 1988. The system was shut off in February 1990 because of a decrease in the groundwater elevation. In August 1994, remediation at the site was continued this time by combined vapor extraction and air sparging. Operation of the new remediation system was discontinued in late 1995 when the influent vapor concentrations had reached asymptotic values and therefore no longer cost effective to continue running the same system. Approximately 8,200 gallons of gasoline ':,,'ere reported to have been extracted during the second phase e.~ remediation. In January of this year, six confirmatory borings were drilled to determine the status of' soil remediation. Very low levels of TPHg (0.57 to 2.28 modkg) were detected in only one of the six borings (Table 2 attached). Quarterly groundwater monitoring has been conducted at the site since 1987. The last monitoring was completed in February, about three (3) months since the remediation system was shut off. The monitoring results showed ~ the contamination levels have significantly decreased.except in one of the off-site wells (MW-14) (Table 5 attached). Closure 'was requested in behalf of the responsible parties for the following masons: The site was actively remediated for about three (3) years. Confirmatory soil sampling results indicates very minimal levels of contamination remain in the vadose zone (2.28 ppm TPHg and 0.018 ppm xylenes at 17' bgs in one of six borings). Although the last groundwater monitoring data showed a slight increase on some of the contaminan~ in the "highly impacted" wells, the BTEX levels are all below MCLs and.the taste and odor threshold levels. The levels in MW-14 have increased; however based on a comparison of the chromatograms (attached) of this well to two on-site wells, it is very likely that there is a different off-site source for the MW-14 contamination. The current soil and groundwater concentrations which ranged from non-detect to very low levels should not pose a risk to degradation of water quality to the site. Based on all available information provided, this Department does not object to closing this investigation. HMI03 UNDERGROUND STORAGE TAh~ UNAUTHORIZED RELEASE (LEAK) / CbNTAMINATION SITE REPORT EMERGENCY HAS STATF OFFICE OF EMERGENCY SERVICES :::FORiLOCAI~'AGENCY :USE ONLY: i~i :!h!:.i !:;~: [] YES ZNO REPORT BEEN FILED ? [] YES ~' NO J:i HEREBY CE~THA~] NAME OF INDIVIDU~ FILING REPORT PHONE SIGNA~R~ ~ R~RESENTING ~ OWNE~PE~TOR ~ REGION~ BOARD COMPANY OR AGENCY N~E ~ ADDRESS ~RE~ C~ STATE ZIP ~ ~ NAME ~ ~NT~TPERSON I PHONE c~ STA~ ~IP FACILI~ N~E (IF APPLICABL~ ~ OPE~TOR ~ PHONE ( ) · ~ ADDRESS ~ ~RE~ C~ ~U~ ZiP ~ CROSS STREET O L~AL AGENCY AGENCY N~E ~NTACT PERSON PHONE ~ REGION~ BOARD PHONE m (I) / N~ME Q~&NTI~ LOST (~LLONS) /; ~ ~o ~c ~u.~.ow. ~ ~ UNKNOWN ~ DATE DI~VERED ~ HOWDIS~VER~ ~ INVENTORY~NTR~ ~ SU~URFACE MONITORING ~ NUIS~CECONDITIONS ~ DA~ DI~HARGE BE~N M~HOD USED TO STOP DISCHARGE (OHECK ~L ~AT APPLY) ~ HAS DISCHARGE B~N STOPPED ? ~ REPAIR TANK ~ CLOSE TANK & FILL IN P~CE ~ CHANGE PR~EDURE ~ ~ SOURCE OF DI~HARGE CAUSE(S) CHECK ONE ONLY CHECK ONE ONLY ~ ~ ~ NOACTION TArN ~ PR~IMINARYS~ ASSE~MENT~RKP~N SUaMI~EO ~ POLLUTION CHARACTERI~TION ~ ~ LE~ BEI~ ~NFIRMED ~ PRELIMINARY SI~ A~E~MENT UNDERWAY ~ POST CLE~UP MONITORING IN PROGRE~ ~ REMEDIATION P~N ~ CASECL~ED(CLE~UP ~MPLE~DOR UNNECE~AR~ ~ CLE~UP UNDERWAY CHECK APPROPRIATE ACTION(S) ~ EXCAVA~ & DIS~SE (ED) ~ REMOVE FREE PRODUCT (FP) ~ ENH~CED BIO DEGRADATION (1~ ~ CAPSI~(CD) ~ EXCAVATE&TREAT(E~ ~ PUMP&TREATGROUNDWA~R(G~ REP~CE SUPPLY (RS) <~ ~ CONTAINMENT ~ARRIER (CB) ~ NO ACT~N REQUIRED (HA) ~ TREA~ENT AT H~P (HU) ~ VENT SOIL (VS) ~ VACUUM EXTRACT ~E) ~ OTHER (O~ STEVE McCALLEY, 2700 "M" STREET, SUITE 300 BAKERSRELD, CA 93301 Phone: (805)862-8700 FAX: (805) 862-8701 R.E.H.S., Director (~$OURCE MANAGEMENT AGENCY DA VID PRICE III, RMA DIRECTOR Engineering & Survey Services Department Environmental Health Services Department Planning Department Roads Department July 2, 1996 Mr. William Davies Davies Oil Company P.O. Box 80067 Bakersfield, CA 93306 SUBJECT: Underground Tank Site Investigation, Davies Oil Facility, 3305~, Gulf Street, Bakersfield, CA Dear Mr. Davies: The subject facility file including the closure report prepared by AquaGeosciences, Inc. (AGI) has been reviewed. Based on all information provided, this Department concurs with AGI's recommendation to close this case. However, before issuance of the closure letter, all the wells installed during the course of this investigation should be properly abandoned. Prior to beginning well abandonment activities, a permit must first be obtained from this · Department. If you have any questions regarding this matter, you may contact me at (805) 862- 8728. Sincerely, Steve McCalley, Director cc: AquaGeosciences, Inc. Federated Insurance CVRWQCB clt\050072j.clt BY: Dolores Gough Hazardous Materials Specialist II Hazardous Materials Management Program 09/84/1996 14:43 80583~ AQUAGEOSCIENCES PAGE 02 ~ COUNTY 2700 "~" ~q~, SUITE 300 BAK~KSFIL:7.D, CA 93301 APPLICATION AND PERMIT FOR MONITORrNG WELL~ This appllcat/on is m C] Consu~mt ~ ModW7 ~ D~stroy Type of wdl/bor/n~ ~;.Oroufldwt2r .'::] Cathodic Protection [2 Test Holo PTO No. O~OOT~ [ I I N~m' .MR. BILL l E~,4nmmm~ ~ 'AQUA GEOSCIENCES , INC Add~u 4440 GRISSOM ST., SUITE 100 BAKERSFIELD 8~1 CA Z~ 93313 omuud, cotmr #a Op' [,uMIr: " 4. 6. 9. lO. SPECIAL CONDITIONS, I 20-.2.5 fee~ , W.I! lb I~ Jo rtqutrd bb. Nihainl ay ~ rola~ M wel~ ~m, It b ~} m c~u~ ~ ~t All ~lb om~ of ~C ~ I ~~ ~ w~ ~~ may ~ rout ~ ~oy~ ahr ~ y~ ~ m~ ~ ~Gmpl~ w~ rc~ P~lt C~[tl~ or ~~ will ~ h Iu~e ota "S~P A c~y orb ~ of W~~, ~lbr', ~ u ~o~ ~ ~bn ~ Fmm ~ m~Le nor THIS APPLICATION BECOMES A PERMIT WHEN APPROVED 09/04/1996 14:43 8058368800 PAGE AQUAGEOSClENCES CON~TRU¢¥10N INFORMATION WELL, VARIOUS *NOTg: AG:I WI~T~ AB;U rDON 18 GROUNDW'~T].':R 'MONITORi NG WELLS OROUN1) I~,,EVATION (Il: IO,IOWN) - AND 10 SP %RGE WELLS BY BORF.~O[.,~ D~ . FILLING C %SING 'WITH a cp:MENT SLURRY, C rTTING OFF UPPRR ' " .... TWO FEET ()F CASING, REMOVING CAS~qG-~)5 DIAb~TIR - · TRAFFIC B )XES AND [] ;STORING s U~F.a c~ , CASINO MATERIAL & OAUOE ,, $C~.E~N MATERTA~ & OAUUE ,, TYPE OF B~-'TOMT~ PLUO a DBP'I~ - " ~ SBALANT . MATBAIAL dr DRFTH ,I FILI'KR PACK MATBP4AL dt SlAB . S~ SLOT SIZ~ & L.B2qOTH . SEAt,ANT PLA~ MB'TI4OD . t, OCJONO WHLL CAP - FACILI'T~ PLOT P~ ~ m ~~ of ~¢. ~tli~ to I~ monitored, inoludi~: Io~tWn of tanks, ~u,~ll8 or ~ wafer withiA SOO' mdl~ of facili~ ~SILAllBIh. WIR.L DIM]nqSlONS Pmv~ a demi~l etwiM of w.ll(s), [.olu4o: ~ of tack lmgm, znnuhr .~l~u, ~! w~il e, tp. No~ any irregulm'it~; ~l~m,dm o~ zone of iftfluenc4, such u mm~ic~J caJcul~.io~ or fbfd test may bo ruquirsd upon ruview of the IpplfcdSJon. NOT~t If sppllution b mst annplete it mm/bo rotan-md. Ti:gl] fn , Fern it~:mlv~l By _ i'md On - TI, lIB APIq. ICA~N B~OOME8 A PERMIT WHEN APPROVED AQUAGEOSCIENCES PAGE 81 AQUAGEOSCIENCES, INC. Groundwater Scientists · Environmental Consultants Fax Cover Sheet To: Company: ............. Fax Number: (-.-.)_-.~~_~._-__~__~L__ Number of Pages: ,_~ _ (including cover page) Comments: IF YOU DO NOT RECEIVE ALL THE PAGES, PLEASE CALL OUR OFFICE AT (~05) 836-8100. 4440 Grissom Street, Suite 100 · Bakersfield, California 93313 (805) 836-8100 · Fax (805) 836-8800 (800) 301-4244 ENVIRONMENTAL HEALTH sL-RVICES DEPARTMENT STEVE McCALLEY, 2700 "M" STREET, SUITE 300 BAKERSRELD, CA 93301 Phons: (805) 862-8700 FAX: (605) 862.8701 R.E.H.S., Director July 2, 1996 Mr. William Davies Davies Oil Company P.O. Box 80067 Bakersfield, CA 93306 SUBJECT: Underground Tank Site Investigation, Bakersfield, CA Dear Mr. Davies: RESOURCE MANAGEMENT AGENCY DA ViD ~ E III, RMA DIRECTOR Engineering & Survey Services Department Environmental Health Services Department Planning Department Roads Department Davies Oil Facility, 3305~ Gulf Street, The subject facility file including the closure report prepared by AquaGeosciences, Inc. (AGI) has been reviewed. Based on all information provided, this Depamment concurs with AGI's recommendation to close this case. However, before issuance of the closure letter, all the wells installed during the course of this investigation should be properly, abandoned. Prior to beginning well abandonment activities, a permit must fa'st be obtained from this Department. If you have any questions regarding this matter, you may contact me at (805) 862- 8728. Sincerely, Steve McCalley, Director cc: AquaGeosciences, Inq. Federated Insurance CVRWQCB clt~050072j.clt BY: Dolores Gough Hazardous Materials SPecialist II Hazardous Materials Management Program STEVE McCALLEY, R.E.H.S. DIRECTOR COUNT' 2700 'M" Street, Suite 300 Bake~jetd, CA 93301 (805)861-3636 (805)861-3429 FAX November 28, 1995 Environmental Health Services Department Mr. William Davies Davies Oil Company P.O. Box 80067 Bakersfield, CA 93306 SUBJECT: Underground Tank Site Remediation, Davies Oil Facility, 33051/2 Gulf Street, Bakersfield, CA Dear Mr. Davies: We have reviewed the status report prepared by AquaGeosciences for the soil and groundwater remediation project at the subject facility. The report indicates that approximately 8232 gallons of petroleum hydrocarbons quantified as gasoline have been extracted at the site since remediation began in August 1994. Last month's vapor monitoring data indicated the concentration of the extracted vapor had decreased to about 280 ppmv from an initial concentration of 5000 ppmv. In addition, the results of the groundwater sampling conducted in August showed only one well remains impacted. Based on the results, it appears that the site has been remediated to levels below the capability of the vapor extraction system on site. Accordingly, we concur with AquaGeosciences' recommendation to discontinue operating the system at this time. In order to determine the status of the cleanup, confirmatory borings need to be drilled and soil samples analyzed. Prior to beginning drilling activities, a brief workplan must be submitted for our approval. If you have any questions regardihg this matter, you may contact us at (805) 861-3636. Sincerely, Steve McCalley, Director BY: Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program cc: AquaGeosciences, Inc. c I t \050072g. c l t STEVE McCALLEY, R.E.H.S. DIRECTOR 2700 'M" SlTeet, Suite 300 Bakefsficqd, CA 933O1 (1505)861-3636 (805-)861-3429 FAX October 3, 1995 COUNT' Environmental Health Services Department Mr. Bill Davies Davies Oil Company P. O. Box 80067 Bakersfield, CA 93380 SUBJECT: Underground Tank Site Remediation, Davies Oil, 3305 1/4 Gulf Street, Bakersfield, CA (Permit No. 050072) Dear Mr. Davies: The September 1995 quarterly groundwater monitoring report prepared by AquaGeosciences, Inc., (AGI) has been reviewed. The report results indicate only one well of the 16 that were sampled had detectable levels of gasoline constituents. Groundwater elevation has also increased by approximately 2-3 feet from last quarter's measurements. AquaGeosciences recommended to operate the vapor extraction system on a cyclic basis. The groundwater air sparging Operations would be discontinued and confirmatory borings would be drilled as soon as the extracted vapor concentrations achieved is 1% of the gasoline LEL. Groundwater monitoring would be continued on a quarterly basis for a year. Based on the results submitted to date, the Department tends to agree with AGI's recommendation. However, information on the vapor extraction system's performance must be provided first for our review. As indicated in our last correspondence, copies of the monitoring report to the air district would suffice for a portion of this reporting requirement. The additional information needs to be submitted 'to this office within 30 days from the date of this letter. If you have any questions regarding this matter, you may contact us at (805)861-3636. Sincerely, Steve McCalley, Director By: Dolores Gough ~' Hazardous Materials Specialist II Hazardous Materials Management Program DG:ch CC: AquaGeosciences, Inc. Federated Insurance Central Valley RWQCB-Fresno gough\O50072f, clt STEVE McCALLEY, R.E.H.S. DIRECTOR 2700 "M" Street, Suite 300 Bakersfield. CA 93301 (805) 861-3636 (805) 861-3429 FAX May 10, 1995 Mr. Bill Davies Davies Oil Company P. O. Box 80067 Bakersfield, CA 93380 SUBJECT: Underground Tank Site Remediation, Davies Oil, 3305 1/4 Gulf Street, Bakersfield, CA (Permit No. 050072) Dear Mr. Davies: The last two quarterly groundWater monitoring reports submitted after the air sparging and vapor extraction system began operating at the subject site have been reviewed. The results showed a significant reduction in the gasoline constituents from the wells Closest to the leak source (MW- 11 & MW- 12) during the last sampling. Groundwater elevation has also increased by approximately 2-3 feet during that time. In order to conf'uma the analytical results and to continually monitor the effectiveness and progress of remediation, we concur with AquaGeosciences' recommendation to continue monitoring the groundwater on a quarterly basis. Performance data from the treatment system in addition to the air district's required monitoring data must also be gathered and reported along with the groundwater monitoring results. Please refer to our Handbook UT-35 for information that needs to be included in remedial action progress reports. If you have any questions regarding this matter, you may contact us at (805)861-3636. Sincerely, Steve McCalley, Director By: DG:cas cc: AquaGeosciences, Inc. Federated Insurance Central Valley RWQCB~Fresno \050072e.¢lt Do l Dolores Gough Ha?ardous Materials Specialist II Ha?ardous Materials Management Program 'NVIRONME.,, L HEALTH SERVlC '-.- EPARTMENT /'~IVIDcCALLEY, R.E.H.S, IRECTOR HAZARDOUS MATERIALS MANAGEMENT PROGRAM MONITORING W~I.I.(S) PERMIT 2700 'M" Street, Suite 300 Bakersfield, CA 93301 (805) 861-3636 (805) 861-3429 FAX MW 1221-05 OWNER'S NAME: Bill Davies DATE: FACIIATY NAME: Davies Oil Company FACILITY LOCATION: 3305 1/2 Guff Street, Bakersfield, CA 93308 DI~H.I.ING METHOD: Hollow Stem July. 1, 1994 CONTRACTOR: Earth Tech, Ltd. , LICENSE NO.:' C 57-408595 ENVIRONMENTAL CONTRACTOR AquaGeosciences~ Inc. TYPE OF MONITORING WELL(S) Ah' Sparge NUMBER OF W~.L~.g REQUIRED TO MONITOR FACHXrY: Ten (10) GENERAL CONDITIONS OF THIS PERMIT: 1. Well site approval is required before beginning any work related to well construction. It is unlawful to continue work past the stage at which an inspection is required un!e_~s inspection is waived or completed. 2. Other required inspections include: conductor casing, all annular seals, and final construction features. 3. A phone call to the Department office is required on the morning of the day that work is to commence and 24 hours before the placement of any seals or plugs. 4. Construction under this Permit is subject to any instructions by Department representatives. 5. All wells constzucted of PVC located at a contaminated site where degradation may occur must be destroyed after 2 years or prove no degradation is occurring or has occurred. 6. Any misrepresentation or noncompliance with required Permit Conditions or Ordinance will result in issuance of a'STOP WORK ORDER.' 7. A copy of the Department of Water Resources DfilleCs Report, ss well as copies of logs and water quality analyses, must be submitted to the Health Deparl~ent within 14 days after completion of the work. 8. A well destruction application must be filed with this Department if a well is being destroyed that is not in conjunction with a test hole permit. 9. The permit is void on the ninetieth (90) calendar day after date of issuance if work has not been started and reasonable progress toward completion made. Fees are not refundable nor transferable. 10. I have read and agree to comply ~ the General Conditions noted above. SPECIAL CONDITIONS: 1. Approved Annular Seal Depth Approximately 38.5 Feet. THIS PERMIT MUST BE SIGNED BY EITHER THE CONTRACTOR OR OWNER. OWNER'S SIGNATURE DATE CONTRACTOR'S SIGNATL~E PERMIT APPROVED BY: DATE: July 1, 1994 Dolore~ Gough Hazardous Materials Specialist ' DATE ~goughL1212-OSh.m46 Aqua6eosc er es, Inc. Groundwater Scientists · Environmental Consultants Fax Cover Sheet Date: To Company: ../~,,, C"~. ,~?,-,~.;-o.~-,_,-./~aa~'ax#_( Attention: From: ~ ) ~gd/- 3 ,v~ ~ Subject: ~"o-- ;,-'<. 7-~, ~' Number of Pages: -?-- (including cover page) Comments: IFYOU DO NOT RECEIVE ALL THE PAGES, PLEASE CALL OUR OFFICE AT (805) 328-0962. 1701 Westwind Drive, Suite 103 * Bakersfield, California 93301 (805) 325-0962 * Fax (805) 328-1129 TEC LTD. '94 ENVlRONMI:t AL blEALTH SERVICEI DEPARTMENT STEVE McCALLEY, R.E.H.S. DIRECTOR 2700 "M" Street, Suite 300 Bakersfield, CA 93301 (805) 861-3636 (805) 861-3429 FAX Mr. Bill Davies Davies Oil Company P. O. Box 80067 Bakersfield, CA 93380 April 4, 1994 SUBJECT: Remedial Action Plan, Davies Oil, 3305 1/4 Gulf Street, Bakersfield, CA (Permit No. 050072) Dear Mr. Davies: The remedial action plan prepared by AquaGeosciences, Inc., for soil and groundwater remediation at the subject site has been reviewed. The work described is acceptable and may be initiated as soon as all necessary permits and approvals from other agencies/parties are obtained. Please notify this office at least 48 hours prior to beginning critical phases of the remediation system installation and operation. If you have any questions regarding this correspondence, I can be reached at (805) 861-3636. Sincerely, Steve McCalley, Director Dolores Gough Hazardous Materials Specialist II Hazardous Materials Management program DG:ch cc: AquaGeosciences, Inc. CVRWQCB, Fresno gough\O50072d.clt ENVIRONMEr,,II L HEALTH SERVIC EPARTMENT STEVE McCALLEY. R.E.H.S. DIRECTOR Mr. Bill Davies Davies Oil Company P. O. Box 80067 Bakersfield, CA 93380 2700 'M" Street, Suite 300 Bakersfield, CA 93301 (805) 861-3636 (805) 861-3429 FAX January 18, 1994 SUBJECT: Underground Tank Site Investigation, 3305 1/4 Gulf Street, Bakersfield, CA (Permit No. 050072) Dear Mr. Davies: The last two groundwater quarterly monitoring reports prepared by Aqua Geosciences have been reviewed. The report results indicated that gasoline contamination exceeding regulatory levels remains in the groundwater at this site. In addition, depth to groundwater has risen approximately 1 to 2.5 feet in the' last three months. Based on our review, we concur with Aqua Geosciences' recommendation to continue groundwater monitoring on a quarterly basis. Further vapor extraction study, if needed, should be performed as soon as possible so that remediation activities can proceed in a timely manner. An implementation plan for the vapor extraction system needs to be approved by this office prior to initiating full scale operation. Please submit the plan within 30 days from the date of this letter. If you have any questions regarding this matter, I can be reached at (805) 861-3636. Sincerely, Steve McCalley, Director DG:ch cc: Aqua Geosciences, Inc. CVRWQCB-Fresno gough\050072a.clt By: Dolores Gough Hazardous Materials Specialist II Hazardous Materials Management Program FEDER , D ,-i. ?.--, ri ,, , ,' Federated Insurance P.O. Box 586, Citrus Heiqhts, CA 95611 6~G0 Sunrise Vista DpiYe, Suite ~-~, Citrus Hei§hts, CA 95~10 ph: (916)7~]-21PP, Toll Free - CA only: 1-~-2L~J-~ Toll Free - ;~ll States: FA._~X (916)7E~21~ June 7, 1993 ATTN: DOLORES GOUGH ENVIRONMENTAL HEALTH SERVICES DEPT. KERN COUNTY 2700 M ST., STE. 300 BAKERSFIELD CA 93301 OUR CLIAM NOS.: YOUR PERMIT NO.: INSURED/OWNER: LOCATION: 83Z-26, 83Z-40 050072 W. P. DAVIES OIL CO. INC. 3305 1/2 GULF ST., BAKERSFIELD, CA Dear Ms. Gough: We acknowledge receipt of your May 28, 1993 letter on behalf of our policyholder, W. P. Davies Oil Company Inc. We wanted to let you know that we are acknowledging the request made in your correspondence and that we are in the process of obtaining bids from various environmental firms on behalf of Davies Oil for anticipated future activities on the premises. At this stage, Associated Soils Analysis, who has been the prior consultant, has been asked to hold off on performing further work until a final decision has been made as to which firm will perform future activities. We anticipate that the consultant hired will respond to your request. Due to the fact that it will take some time to obtain the bids and for the consultants retained to come up-to-speed on this project, we respectfully ask on behalf of W. P. Davies Oil Company Inc. that you grant an open extension regarding the reports that you have asked for, which include a report regarding work conducted by Aegis, a Remedial Action Plan, commencement of a quarterly groundwater monitoring program, and a status report. Please contact me by phone or in writing regarding your decision about the extension. Sincerely, Claims Supervisor Federated Mutual Insurance Company GEC:pom cc: Arnold Anchordoquy Clifford, Jenkins & Brown 1430 Truxtun Ave., Ste. 900 Bakersfield, CA 99301-5230 cc: W. P. Davies Oil Co. Inc. Attn: Bill Davies PO Box 80067 Bakersfield, CA 93380 FEDERATED MUTUAL INSURANCE COMPANY · FEDERATED LIFE INSURANCE COMPANY · FEDERATED SERVICE INSURANCE COMPAN} ' IIOME OFFICE: OWA TONNA, MINNESOTA · 55060-2401 ENVIRONM,", AL STEVE McCALLEYo R.E.H.S. DIRECTOR HEALTH SERVI"L; DEPARTMENT 2700 "M" Street, Suite 300 Bakersfield. CA 93301 (805) 861-3636 (805) 861-3429 FAX May 28, 1993 Bill Davies DAVIES OIL COMPANY P. O. Box 80067 Bakersfield, CA 93380 SUBJECT: Location: Known as: Permit #: 3305 1/4 Gulf Street, Bakersfield, CA Davies Oil Company 050072 Dear Mr. Davies: This is to inform you that further delay in completing the remediation at the subject site is not acceptable by this Department. As per a telephone conversation with your contractor, Associated Soils Analysis, it is our understanding that the groundwater pump and treat operation which was restarted late last year had been turned off again. In addition, the report of the work conducted in March of 1992 has yet to be submitted for our review. Although some of the delays experienced to date may be attributed to changes in environmental contractors, this Department expects an effort on the part of Davies Oil Company to expedite the necessary work. Accordingly, this Department is requesting the following: Submittal of report for all work conducted by AEGIS Environmental, Inc. for this project by June 30, 1993. Submittal of a finalized remedial action plan for both soil and groundwater by July 30, 1993. Commencement of a quarterly groundwater monitoring program using all existing wells by June 30, 1993. 4. Submittal of report detailing all operational and management changes for this project. DAVIES OIL COMPANY Page Two May 28, 1993 If you have.any questions regarding this matter, I can be reached at (805) 861-3636. Sincerely, Steve McCalley, Director BY- Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program DG:jg cc: Gayle Clark Central Valley RWQCB (05OO72 .ag) RANDALL L. ABBOTT DIRECTOR DAVID PRICE Iii ASSISTANT DIRECTOR Environmental Health Services Department STEVE McCALLEY, REH$, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO Planning & Development Services Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT August 4, 1992 Bill Davis Davis Oil Company P. O. Box 80067 Bakersfield, CA 93380 SUBJECT: Location: Known As: Permit #: 3305 1/2 Gulf Street, Bakersfield, CA Davis Oil Company 050072 Dear Mr. Davies: A review of our records indicated that new monitoring wells were installed in late March of this year. Based on the workplan, it is our understanding that a report of this work is to be submitted within 30 days from receipt of analytical data and a final remedial plan is to be submitted within 30 days from the report completion. To date, we have not received ~ ~ r-~-'+ 0-~-. ,.~ ~.u-~.~'~ ~,J~-.. Please submit the hydrogeological~report (vitlain 15 days from the date of this letter. If you have any questions regarding this matter, please call me at (805) 861-3636, Extension 545. Sincerely, Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program DG:cas CC: Gayle Clark Jong Han, Central Valley Regional Water Quality Control Board Aegis Environmental \050072.1tr 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 Bill Davies Subject: Davies Oil Company December 11, 1992 Page 2 If you have any questions regarding this matter, I can be reached at (805) 861-3636, Extension 545. Sincerely, Steve McCalley, Director By: 'Do I rs, 6v~/. Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program DG:cas CC: Jong Han, Central Valley Regional Water Quality Control Board Bart Racca, Associated Soils Analysis \050072.1tr ,O RE ,.,,JRCE MANAGEMENT A,.....,,qCY RANDALL L. ABBOTT DIRECTOR DAVID PRICE !!1 ASSISTANT DIRECTOR Environmental Health Services Department STEVE McCALLEY, REHS, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO Planning & Development Services Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT HAZARDOUS MATERIALS MANAGEMENT PROGRAM MONITORING WELL(S) PERMIT PERMIT #: MW0820-05 0821-05 0822-05 0823-05 OWNER'S NAME:. Bill Davies FACILITY NAME: Davies Oil Company FACILITY LOCATION: 3305 1/2 Gulf Street DRILMNG METHOD: Hollow Stem Auger CONTRACTOR: Bayland Drillinq ENVIRONMENTAL CONTRACTOR Aegis Environmental, Inc. TYPE OF MONITORING WELL(S) Groundwater NUMBER OF WELLS REQUIRED TO MONITOR FACILITY: Four (4) DATE: March 19, 1992 LICENSE NO.: 374152 GENERAL CONDITIONS OF THIS PERMIT: 1. Well site approval is required before beginning any work related to well construction. It is unlawful to continue work past ti',.e stage at which an inspection is required unless inspection is waived or completed. 2. Other required inspections include: conductor casing, all annular seals, and final construction features. 3. A phone call to the Department office is required on the morning of the day that work is to commence and 24 hours before the placement of any seals or plugs. 4. Construction under this Permit is subject to. any instructions by Department representatives. 5. All wells constructed of PVC located at a contaminated site where degradation may occur must be destroyed after 2 years or prove no degradation is occurring or has occurred. 6. Any misrepresentation or noncompliance with required Permit Conditions or Ordinance will result In issuance of a "STOP WORK ORDER." 7. A copy of the Department of Water Resources Driller's Report, as well as copies of logs and water quality analyses, must be submitted to the Health Department within 14 days after completion of the work. 8. A well destruction application must be filed with this Department If a well is being destroyed that is not In conjunction with a test hole permit. 9. The permit is void on the ninetieth (90) calendar day after date of issuance if work has not been started and reasonable progress toward completion made. Fees are not refundable nor transferable. 10. I have read and agree to comply with the General Conditions noted above. SPECIAL CONDITIONS: 1. Approved Annular Seal Depth 26 feet. This permit must be signed by either the contractor or owner. OWNER'S SIGNATURE PERMIT APPROVED BY: DATE: March 19, 1992 LF: ch tunk \0~Z0- 05. mw 2700 "M" STREET, DATE Laurel Funk SUITE 30O CONTRACTOR'S SIGNATURE DATE BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 RECEIPT PAGE I 03!~3/92 11:02 am CASH REGISTER KERN CO RESOURCE ~ANAGEMENT AGENCY 2700 'M' Street Bakersfield, CA 93301 (80S) 861-3502 Invofce Nbr. 1 ~Type of Order AEGIS ENVIRONMNTAL 68593 )Customer P-O.~ I W'Cn 8y IOrder Date ) Ship Date IH031392t I RAR I 03/13/92 I 03/!3/92 ,Line Description Quantity ~. 1 4751 ~ELL$ MONITORING 4 '¥' NLL003B Via I Terms NT Price Unit Disc Total 335.00 E 1340.00 Order Tota'l 1340.00 THANK YOUI Amount Due Paymen~ Made By Check 1340.00 1340.00 EGIS Suite 160, Roseville, CA 95678 · ENVIRONMENTAL, INC. 916. 782-2110 / 916. 969-2110 / FAX 916. 786-7830 ~--Ma 1, 1992 ~~-------~3o~ nty of Kern ~.~vironmental Health Services Department Hazardous Materials Program 2700 "M" Street, Suite 300 Bakersfield, Galifornia @3301 Subject: Monitoring Well Applications "Permit #050072" Davies Oil Company 3305-1h Gulf Street, Bakersfield, California Dear Ms. Green: Attached are monitoring well permit applications for four monitoring wells to be installed at the subject site, and a check for $1,340. The installation of the wells has been authorized by personnel of your agency. The installation is scheduled for March 25 through 28, 1992. Please note that March 28, 1992, is a Saturday. The proposed well dimensions and construction are conceptual, and may be modified based on conditions encountered in the field. Copies of the soil boring logs and monitoring well schematics, at a minimum, will be submitted to your attention subsequent to well installation. Thank you for your time and consideration in this matter. If you have any questions regarding the permits, or the well installations, please call me or Mr. Duane Garrabrant at (916) 782-2110. Sincerely, Mark A. Richards Senior Geologist/Project Manager cc: B. Garber, Aegis Environmental, Inc. MAR/law Attachments 90-204L. LTR GEOLOGISTS ° ENGINEERS ° GROUNDWATER SCIENTISTS ( MONITORING WELL APPUCATION ENVIRONMENTAL HEALTH SERVICES DEPARTMENT HAZARDOUS MATERIALS MANAGEMENT PROGRAM 2700 'M" STREET, SUITE 300 BAKERSFIELD, CA 93301 Circle One: Proiect Contact: DESTROY Application Date No. of Wells No. MW . m~~ 8'~/ For Office Use Only Facility. Name: I~VIF:..'~ OiL. Facilitv Phone: gO_q"-323 -6o6~ cross streat: P/~:~t.'4> P~A~ c.y: aA-~cetei Ftet<~ zap: e/33go ,Address: ~. 0', I~e)(' ~D b 7 B. CONTRACTOR INFORMATION Environmental Contractor. Address: ~(,/i't'~ /{pO License No. and Type: ..hZ ~ IN'& Phone: c//& -- 7/Z2 - 2/I O zap: 75'67 ~' w.c 8o.: ~c-t~ got, 2-~oSL.q Drilling Contractor. Address: License No. and Typ~: C- ~7 /Vi), C. ENVIRONMENTAL INFORMATION Depth to Groundwater:. 4'"7 W.C. No.: pc. ~ g/ob Lithology Log Reviewed By: /%~flg< &le,44,~.~ Registration No.: Proposed Start Date: Drilling Method: Type of Well (Circle Onel:(~Groundwater_L) HMI2.3 /c/C/2.. Proposed Completion Date: Vadose Zone Test Hole MONITORING WELL APPUCATION ENVIRONMENTAL HEALTH SERVICES DEPARTMENT FL~7ARDOUS MATERIALS MANAGEMENT PROGRAM 2700 "M' STREET, SUITE 300 BAKERSF~LD, CA 93301 Circle One: CONSTRUCT ~ A. FACII.ITY INFORMATION DESTROY Application Date --~/-.~ '~Yff-' No. of Wells / pTo No. OffL/;O Y'~. MW No.(s! nT~c' Z~'3 -.o~ For Office Use Only Project Contact: Facility. Name: 0,~/t~ OIL. c~: 13A~e~F/~ zip: B. CONTRACTOR INFORMATION Env/ronmenmi Contractor:. Address: License No. and .Type: city: Ro~E. Vtbc,~ Zip: Drilling Contractor:. Phone: 4i'£ --32 2 - Zgeo License No. and Type: C. £NVIRO~NTAL Lithology Log R~ewed w.c so.: pc_. ct? ~?/06 Verified By: Registration No.: ..5'gqo D. PROJECT INFORMATION Proposed Start Date: Drilling Method: /~O,I..(.~iA,l Proposed Completion Date: Iq42.. Type of Well (Circle One Si'enature: HMI23 Vadose Zone Test Hole Title: ,~ts, o, ~>a/o,,jd Date: RANDALL L. ABBOTT DIRECTOR DAVID PRICE Iii ASSISTANT DIRECTOR Environmental Health Servicea Del)artment STEVE McCA[ I ~:y, REH$, DIRECTOR Air Pollution Control District WILLIAM J. RODD¥, APCO Phanning & Development Se~aCes D~partment TED J/0~IF_.S, ~ICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT March 4, 1992 Bill Davies Davies Oil Company 3305-1/2 Gulf Street P.O. Box 80067 Bakersfield, CA 93380 SUBJECT: Location : Known As: Permit #: 3305-1/2 Gulf Street, Bakersfield, CA Davies Oil Company 050072 Dear Mr. Davies: The FebrUary 19, 1992, Remedial Action Plan, prepared by AEGIS Environmental. Inc., for the subject site has been reviewed. AEGIS' proposal to overdrill four (4) of the existing wells, retrieve soil and water samples, and survey the wells to determine the direction and gradient of groundwater flow, is acceptable and may be started as scheduled. Please notify this office at least 48 hours prior to starting work. If you have any questions regarding this matter, I can be reached at (805) 861-3636, Extension 545. Sincerely, Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program DG:ch cc: Mark A. Richards, AEGIS Environmental gough\davies.let 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 ./ AEGIS ENVIRONMENTAL, INC. 1050 Melody Lane, Suite 160, Roseville, CA 95678 916 . 782-2110 / 916 . 969-2110 / FAX 916 · 786-7830 February 19, 1992 Mr. Bill Davies Davies Oil Company 3305-~,,~ Gulf Street Post Office Box 80067 Bakersfield, California 93380 Subject: Remedial Action Plan Davies Oil Company Facility 3305-1/2 Gulf Street, Bakersfield, California II.U/ '' ,If' Dear Mr. Davies: Aegis Environmental, Inc., is pleased to present to Davies Oil Company a remedial action plan (RAP) to address environmental compliance regarding the remediation of soil and groundwater at the subject site. The RAP proposes to establish a soil vapor extraction system (SVS) to mitigate hydrocarbon-bearing soils and groundwater, and to operate the existing groundwater treatment system to establish gradient-control of groundwater. The RAP proposes the following elements: The overdrilling of existing monitOring wells MW-l, MW-11, MW-12, and MW-14; these wells are currently dry. The overdrilling of these wells will extend them below the water table, providing necessary gradient and analytical data; Installation of a SVS incorporating existing recovery well RW-1 and monitoring well MW-12; the installation will require trenching connecting th'e wells to the SVE treatment area, located adjacent to the current groundwater treatment area; The preparation of a results report containing the results of the monitoring well overdrilling and sampling, groundwater measurements and sampling; the report will identify the horizontal and lateral extent of hydrocarbons in the subsurface, if warranted, and the results of an extended remediation system pilot test; and, 90-2041.LTR GEOLOGISTS · ENGINEERS ' GROUNDWATER SCIENTISTS 3305~, Gult Street, B~kers~eld, · The preparation of a final remedial plan documenting the installation and operation of the treatment systems. We appreciate the opportunity to provide geologic, engineering, and environmental consulting services to the Davies Oil Company, and trust this report meets your needs. If you have any questions or concerns, please call me at (916) 782-2110. Sincerely, AEGIS ENVIRONMENTAL INC, Mark A. Richards Senior Geologist UAR/law/mjg Attachments cc: Dolores Gough, Kern County Environmental Health Services Department 90-2041.LTR - 2 - Check Return Address Block: Ir-] 1050 Melody Lane, Suite 160 Rose,lie, Ca. 95678 8196 S W Hall Blvd, Suite 300 Beaverton, Ore,Ion 97005 1175 Fair View, Suite H Carson City, Nevada 89701 I I LETTER OF TRANSMITTAL Date: /-2_~-q& Project Attention: Ooloces ~o We Are Sending: The Following: ~ Enclosed [] Under Separate Cover Via [] Draft Report / Letter [] Regulatory Correspondance [] Final Report / Letter ,~ Laboratory Analytical Results [] Cost Estimate [] These Are Transmitted As Checked Below: [] For Approval [~'As Requested [] For Your Use [] For Your Information Copies Were Sent To: ~ None [] For Review And Comment [] Per Our Telephone Conversation [] Approved As Submitted [] The Following: 2) 3) 4) 5) This Document Was Sent Via: [~ First Class Mail [] Airbone Express [] Express Mail i-'1 Federal Express [] Federal Express / 2nd Day Air [] Federal Express / Sudace {1} Original, (2} Central File ( Correepondance ), {3} Project Manager APPENDIX C ANALYTICAL RESULTS: AIR SAMPLES NATIONAL ENVIRONMENTAL TESTING, INC. NET Pacific, Inc. r~ E C E I V 435 Tesconi Circle .- Santa Rosa, CA 95~1~ I.~ 1 6 1991 Tel: (707) 526-7200 Fax: (707)526-9623~$'[I.~ .~.,,~" Mark Richards Aegis Environmental Inc. 1050 Melody Lane, Ste 160 Roseville, CA 95678 Date= 12/12/1991 NET Client Acct No= NET Pacific' Log No= Received= 11/22/1991 65400 91.0841 Client Reference Information 3305.5 Gulf St., Bakersfield, Project= 90-204 Sample analysis in suppor~ of the project referenced above has been completed and results are presented on following pages. Please refer to the enclosed "Key to Abbreviations" for definition of terms. Should you have questions regarding procedures or results, please feel welcome to contact Client' Services. Approved by= JS:rct Enclosure(s) NET Pacific, Inc Client No= 65400 Client Names Aegis Env£ronmental Inc. NET Log No= 91.0841 Date= 12/12/1991 Page= 2 Ref= 3305.5 Gulf St., Bakersfield, Project= 90-204 Descriptor, Lab.No. and Results Parameter EXH-STK-RW-1 BWR-EXH-RW-1 11-20-91 11-20-91 Reporting Method Limit 106013 106014 Units TPH (Gas/BTXE) ~THOD 5030 (GC,FID) DATE ANALYZED. DILUTION FACTOR* as Gasoline I~TI-IOD 8020 DATE ANALYZED DILUTION FACTOR* Benzene Eth¥1benzene Toluene Xylenes (Total) .12-05-91 12-05-91 i 1 2.5 24 1,800 ' ppmv 12-05-91 12-05-91 i 1 150 ND 5,400 ppbv 150 .ND 7,000 ppbv 150 2,100 26,000 ppbv '150 ND 40,000 ppbv NET Pacific, Inc 65400 12/12/1991 CLient Namer J~g£s Env£~omnent&[ Inc. NET Loq No~ 91.0841 Paqe~ 3 Ref: 3305.5 Gulf St., Bakersfield, ProJec'tt 90-204 Descr£p~or, Lab No. and Results Parameter ~-STK-MW-1 BWR-EXH-MW-1 I 1 11-20-91 11-20-91 Reporting Method Limit 106015 106016 Units TPH (Gas/BTXE) ~-~THOD 5030 (GC,FID) DATE ANALYZED DILUTION FACTOR* as Gasoline METHOD 8020 DATE ANALYZED DILUTION FACTOR* Benzene Ethylbenzene Toluene Xylenes (Total) 12-05-91 I2-05-91 i 1 2.5 9.9 2,300 ppmv 12-05-91 12-05-91 I 1 150 ND 56,000 ppbv 150 ND 21,000 ppbv 150 2,800 130,000 ppbv 150 'ND 120,000 ppbv NET Pacific, Inc KEY TO ABBREVIATIONS and METHOD REFERENCES < = Less thanl When appearing in results column indicates analyte not detected at the value following. This datum supercedes the listed Reporting Limit. * = Reporting Limits are a function of the dilution factor for any given sample. To obtain the actual reporting limits for this sample, multiply the stared Reporting Limits by the d£1ution factor (but do not multiply reported values). ICVS = Initial Calibration Verification Standard (External Standard). mean = Averagel sum of measurements divided by number of measurements. mg/Kg (ppm) = Concentration in units of milli~ramsof .ana!yte per'kilogram of sample, wet-weight basis (parts per million). mg/L = Concentration in units of milligrams of analyte per liter of sample. mL/L/hr = Milliliters per liter per hour. MPN/100 mC = Most probable number of bacteria per one hundred milliliters of sample. N/A = Not applicable. NA = Not analyzed. ND = Not detected~ the analyte concentration is less than applicable listed reporting limit. NTU = Nephelometric turbidity units. RPD = Relative percent'difference, 100 [Value 1 - Value 2J/mean value. SNA = Standard not available. ug/Kg (Pgb) = Concentration in units of micrograms of analyte Der kilogram. of sample, wet-weight basis (par~s per billion). ug/L = Concentration in units of micrograms.of analyte per liter of sample. umhos/cm = Micromhos per centimeter. Method References Methods 100 through ~93= see "Methods for Chemical Analysis of Water & Wastes', U.S. EPA, 600/4-79-020, rev. 1983. Methods 601 through 625= see "Guidelines Establishing Test Procedures for the Analysis of Pollutants" U.S. EPA, 40 CFR, Part 136, rev. 1988. Methods 1000 through 9999= see "Test Methods for Evaluating Solid Waste", U.S. EPA SW-846, 3rd edition, 1986. SM= see "Standard Methods for the Examination of Water & Wastewater, 16th Edition, APHA, 1985. Phonc (915) 782 21 l0 FAX (916) 786-7830 AEGIS Environmental Consultants, Inc. Sample Identification/Field Chain of Custody Record Send result~ to: 1050 Melody Lane, Suite 160 ' Rosev~Je, CA 95678 Sitc Address: /~30~'"/,?_ "/' ' AEGIS Project #: Shipped By: . .~, Shipped To: % , '',, , Projext Manager For Shell Projects Only WIC: CT/DL: Shell Engineer. / Haza~o~s MatctiaSs s~spcc~rt. Sampling Sample No. of Analysis Point Locatiop Field ID~ Date ~ Contain Re uired Field ID }{ Dale/Time Comme_n_*s Received forLab Dale/Time: ///z.~.//7/ O 0%0 Commcnls: Receiving Laboratory: Please return original form after signing for receipt of samples. Whh~Original Ycllow/l.ab Coov Pink rd;lo LANDELS, R.I PLEY DIAMOND ATTORNEYS Charlotte Uram 415-512-4655 Hills Plaza 350 Steuart Street San Francisco, CA 94105-1250 Tel 415-788-5000 Fax 415-788-7550 925 L Street Suite 950 Sacramento, CA 95814-3704 Tel 916-448-8300 Fax 916-448-4923 December 16, 1991 Ms. Amy Green Kern County Environmental Health 2700 M Street, Suite 300 Bakersfield, California 93301 Notice of Billing, UST Pilot Program, Kern Cgunty, Site 50072 Dear Ms. Green: Enclosed please find a copy of W.P. Davies Oil Co.'s Petition for Review of the Notice of Billing, UST Pilot Program, Kern County, Site 50072. We sent this petition today to the State Water Resources Control Board for filing. We are filing this protective petition to meet California Water Code statute of limitations requirements and will attempt to resolve Petitioner's concerns cooperatively with the agencies. Very truly yours, Charlotte Uram Enclosure LANDELS, RIPLEY & DIAMOND ATTORNEYS Charlotte Uram 415-512-4655 Hills Plaza 350 Steuart Street San Francisco, CA 94105-1250 Tel 415-788-5000 Fax 415-788-7550 925 L Street Suite 950 Sacramento, CA 95814-3704 Tel 916-448-8300 Fax 916-448-4923 December 16, 1991 Via Federal Express Mr. Mike McDonald Manager Underground Storage Tank Program State Water Resources Control Board Post Office Box 944212 Sacramento, California 94244-2120 Notice of Billing, UST Pilot Program, Kern County, site 50072 Dear Mr. McDonald: The enclosed Petition for Review of the Notice of Billing, UST Pilot Program, Kern County, Site 50072 is submitted on behalf of W.P. Davies Oil Co. ("Petitioner"). The Petition for Review is being submitted as a protective filing to satisfy'the California Water Code statute of limitations requirements. Petitioner is attempting to resolve concerns about the Notice of Billing in cooperation with the agencies. Accordingly, Petitioner respectfully requests that the State Water Resources Control Board file the enclosed Petition for Review and hold this matter in abeyance. If it becomes necessary, Petitioner will submit as amendments to this petition all additional necessary information. Very truly yours, -_._ "~'~" Charlotte Uram JXR:r Enclosures cc: Mr. Bill Davies (with enclosures) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 .19 20 21 22 23 24 25 26 Landel$. Ripley & Diamond San Ft'ancisco CHARLOTTE URAM JESSICA M. RIZZOLO LANDELS, RIPLEY & DIAMOND 350 Steuart Street San Francisco, California 94105 Telephone: (415) 788-5000 Attorneys for Petitioner W.P. Davies Oil Co. STATE OF CALIFORNIA STATE WATER RESOURCES CONTROL BOARD ) IN RE: NOTICE OF BILLING, UST PILOT ) PROGRAM, KERN COUNTY SITE NO. 50072 ) ) ) ) NO. PETITION FOR REVIEW Petitioner W.P. Davies Oil Co. submits this Petition for Review of the November 21, 1991 Notice of Billing, UST Pilot Program, Kern County Site No. 50072. Exhibit A to this Petition for Review contains a copy of the November 21, 1991 Second Notice of Previous Billing requiring payment within thirty days of $1,167.10. This Petition is filed in accordance with the State Water Resources Control Board Policy Regarding the Underground Storage Tank Pilot Program. 1. Petitioner is W.P. Davies Oil Co. Petitioner's address is P.O. Box 80067, Bakersfield, California 93380. Communication 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Landels. Ripley & Diamond San Francisco concerning this matter should be sent to Petitioner's attorney at the address specified in the caption of this petition. 2. Petitioner requests that the State Water Resources Control Board ("SWRCB") review the above-mentioned Notice of Billing. 3. The SWRCB issued the Notice of Billing on behalf of the local agency and the Regional Water Quality Control Board on November 21, 1991. 4. Petitioner will submit to the SWRCB as an amendment to this petition a full and complete statement of reasons why the Notice of Billing was inappropriate and improper. 5. Petitioner will submit to the SWRCB as an amendment to this petition a statement of the manner in which Petitioner is aggrieved by the Notice of Billing. 6. Petitioner requests that the SWRCB set aside the Notice of Billing or that the SWRCB direct the RWQCB to set aside the Notice of Billing. 7. Petitioner will submit to the SWRCB as an amendment to this petition a complete statement of points and authorities in support of this petition. 8. Petitioner will request from the RWQCB and the County of Kern and submit to the SWRCB as an amendment to this petition a list of persons, if any, other than Petitioner, known by the RWQCB and the County to have an interest in the subject matter of this petition. PETITION FOR REVIEW -2- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19. 20 21 22 23 24 25 26 Landels. Ripley & Diamond San F~ancisco 9. A copy of this Petition for Review and the attached Exhibit A has been sent to the RWQCB and the County of Kern (Exhibit B). 10. Petitioner will submit to the SWRCB as an amendment to this petition a copy of their request to the RWQCB and the County of Kern for preparation of the record concerning the Notice of Billing. 11. Petitioner requests that the SWRCB hold a hearing at which Petitioner can present additional evidence to the SWRCB. Petitioner will submit to the SWRCB as an amendment to this petition statements regarding evidence as appropriate. For all the reasons stated herein, Petitioner requests that the State Water Resources Control Board set aside the Notice of Billing or direct that it be set aside. Date: December 16, 1991 Respectfully submitted, LANDELS, RIPLEY & DIAMOND PETITION FOR REVIEW -3- UNDERGROUND STORAGE TANK CLFQ%NUP SITE ;NVOIC~ RECSIYED tOCAL AGencY: CO~TY OF ~E~ - Z~;~. IiLTH. OAV1ES OIL CO. SITE ~gCATZON 11/21/91 BILL DAVIES W. P. DAVIES OIL COMPANY P,O. BOX 80067 BAKERSFIELD CA 93380 DAVIES OIL COMPANY 3305 GULF STREET BAKERSFIELD CALIFORNIA 93308 SITE # 50072 TOTAL PREVIOUSLY' BILLED- PAXMI".NT (S) RgCEIVED $ 1,354.37 $ ~87.27 FUND: S TOTAL AMOL~NT DUE $ 1,167.10 Enter amount paid and return one copy of ~his invoice wi=h check or money orde: payable to STATE WATER RE~Ot~CES CONTROL BO~D. Please write the s%te number ~h= check or mongy order. Payment due in 30 days. MAIL CHECK TO: STATE WATER RESOURCES CONTROL BOARD DIVISION OF CLEAN WATER PROGRAMS UST CLF2ENUP PROGR3/4 ~.O~ BOX 944212 SACRAMENTO, CA 94244-2120 ~COND NOTIC~ OF PREVIOUS BILLING mXHIBI f A LANDELS, RIPLEY DIAMOND ATTORNEYS Ch~,rlo~te Uram 4~5-5~2-4655 Hill~ Plaza 350 Steuart Street San, Francisco, CA 94105-1250 Tel 415-788-5000 Fax 415-788-7550 925 L Street Suite 950 Sacramento, CA 95814-3704 Tel 916-448-8300 Fax 916-448-4923 December 16, 1991 Ms. Amy Green Kern County Environmental Health 2700 M Street, Suite 300 Bakersfield, California 93301 Re: Notice of Billing, UST Pilot Program, Kern Countyf Site 500?2 Dear Ms. Green: Enclosed please find a copy of W.P. Davies Oil Co.'s Petition for Review of the Notice of Billing, UST Pilot Program, Kern County, Site 50072. We sent this petition today to the State Water Resources Control Board for filing. We are filing this protective petition to meet California Water Code statute of limitations requirements and will attempt to resolve Petitioner's concerns cooperatively with the agencies. Very truly yours, Charlotte Uram Enclosure EXHIBIT Rr- )URCE MANAGEMENi" , ENCY RANDALL L. ABBOTT DIRECTOR DAVID PRICE iil ASSISTANT DIRECTOR Environmentai Health Sen~ices Del3artmen! STEVE McCAI ! Fy, REHS, DIRECTOR Air Pollution Control District WILLIAM J. RODDY. APCO Planning & De~elo!~ment Services Del3a~ment TED JAMES, AICP, BIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT November 19, 1991 Arthur Chen AEGIS Environmental, Inc. 1050 Melody Lane, Suite 160 Roseville, CA 95678 SUBJECT: Location : 3305 1/2 Gulf Street, Bakersfield, CA Known As: Davies Oil Company Permit # : 050072 Dear Mr. Chen: This is to acknowledge receipt of a copy of AEGIS Environmental's letter to the Kern County Air Pollution Control District regarding the vapor extraction pilot testing at the subject site. Please contact this office also when the test date is established in order that we may be able to come to the site and witness the testing. After the pilot testing is completed, the vapor extraction system design (if this is the · alternative to be used) including the testing results must be submitted to this office for our review. Please refer to our Handbook UT-35 for our other requirements on the remedial action plan. If you have any questions regarding this matter, please call me at (805) 861-3636, Extension 545. Sincerely, Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program DG:ch cc: Bill Davies, P.O. Box 800657, Bakersfield, CA 93380 Gayle Clark, 6060 Sunrise Vista, Suite 2500, Citrus Height, CA Jonff t Ian, Central Valley RWQCB gough\chcn.ler 2700 "M" STREET, SUITE 300 BPdKERSFIELD, CALIFORNIA 93301 PRINTED ON RECYCLED PAPER 95610 (805) 861-3636 FAX: (805) 861-3429 Check Return Address Block: 1050 Melody Lane, Suite 160 Rosewlle, Ca. 95678 8196 S W Hall Blvd, Suite 300 Beaverton, Oreqon 97005 1175 Fair View, Suite H Carson City, Nevada 89701 LETTER OF TRANSMITTAL Date: ti- t -~1 Project Attention: yt~. D¢,icr.,._c C.~-ou~,~. , / We Are Sending: The Following: C~[ Enclosed [] Under Separate Cover Via [] Draft Report / Letter [] Regulatory Correspondance /~[~Final Report / Letter [] Laboratory Analytical Results [] Cost Estimate [] These Are Transmitted Copies Were Sent To: 1) As Checked Below: [] For Approval [] As Requested {~ For Your Use For Your Information [] None [] For Review And Comment [] Per Our Telephone Conversation [] Approved As Submitted [] The Following: 2) 3) 4) This Document Was Sent Via: ,~ First Class Mail [] Airbone Express [] Express Mail Comments: [] Federal Express [] Federal Express / 2nd Day Air [] Federal Express / Surface {1} Original, {2} Central File ( Correspondance ), {3} Project Manager AEGIS 1050 Melody Lane, Suite 160, Roseville, CA 95678 ENVIRONMENTAL, INC. 916 ' 782-2110 / 916' 969-2110 / FAX 916. 786-7830 October 17, 1991 Mr. Tom Goff Kern County Air Pollution Control District 2700 "M" Street, Suite 275 Bakersfield, California 93301 Subject: Experimental Research Exemption In Situ Vapor Extraction Pilot Test Davies Oil Company 3305-1/2 Gulf Street, Bakersfield, California Dear Mr. Goff: Aegis Environmental, Inc. (Aegis), is pleased to submit this request for an experimental research exemption to perform an in situ soil vapor extraction pilot test at the above- referenced site (Figure 1). Aegis intends to perform a 6-hour soil venting test on recovery well 1 (RW-1) located on site (Figure 2). Upon your approval, the test date is tentatively set for October 29, 1991. Aegis will contact your office when the final date is established. Aegis will submit a summary of test results to your office within 30 days of test completion. The soil venting process will provide the following events: 1) reducing the atmospheric pressure within the soil to induce an airflow through advection, and 2) drawing the induced airflow into an air pump and then pumping the collected air through two Vent Scrub carbon canisters and discharging the airflow through a vertical exhaust stack. A 2-horsepower portable regenerative blower assembly (Figure 3) will be transported to the site and located adjacent to RW-1 during the pilot test. The blower assembly will be powered with a portable three-phase generator and connected to the test well (RW-1) through 2-inch PVC piping. The blower exhaust will connect to two, 200-pound carbon canisters connected in series and then routed through 2-inch PVC piping to the exhaust stack. The exhaust stack will discharge approximately 15 feet above-ground level. 90-204C.LTR GEOLOGISTS ° ENGINEERS ° GROUND WATER SCIENTISTS 330~-1/2 Gulf St~ee~ I~ersfleld, Caltf~rnm The blower assembly will be monitored at the: 1) intake to the assembly; 2) the blower exhaust; 3) between the carbon canisters for break through; and, 3) at the exhaust stack. The system airflows will be monitored at the blower exhaust. Air temperatures and pressures will taken at the intake to the blower assembly, the blower exhaust, and the exhaust stack. Air samples will be taken at the blower exhaust and the exhaust stack to quantify the rate of hydrocarbons removal and to verify emissions compliance. Aegis anticipates at least a 99 percent removal of petroleum constituents from the advected air stream. Attachment I are the copies of the Authority to Construct and Permit to operate as you requested for this site. If you have any questions or comments, please contact us at (916) 782-2110. Sin. cerely, ~ Rod~ey D. 'Moore ~ Field Services Supervisor RDM/law Attachments 90-204C.LTR -2- I ii I II o I Tonk~ o ! Sump o o o c) o o o ;399 · ' "2~ /~... , /./:'..../ , Milo 2.3/" .,~ . /... ×/" ["~' I . ,'Orive~n Boll Park ~,uh~y s M u~eam Ho~, SCALE: 1"= 2,000' 0 2,000 GENERAL NOTES: BASE MAPE FROM USGS 7.5 ~ TOPOGRAPHIC OILDALE, CALIF. FIGURE 1 SITE LOCATION MAP Davies Oil Company 3305 1/2 Gulf Street Bakersfield, Ca. AEGIS Job Number g0- DRAWN BY: Ed B/prn_ard DATE: Aug..12, 1991 REVIEWED BY:~f~ DATE: I~-'b~URCE ( MANAGEMENT' ~NCY RANDALL L. ABBOTT DIRECTOR DAVID PRICE ill ASSISTANT DIRECTOR Environmental Health ~e~,~c~ Depa~ment STEVE McCALLE¥, REH$, DIRECTOR Air Pollution Control D~trict WILLIAM J. RODD¥, APCO Planning & Development Sera,ices Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT September 23, 1991 Arthur Chan AEGS Environmental, Inc. 1050 Melody Lane, Suite 160 Roseville, CA 95678 SUBJECT: Location: Known As: Permit #: 3305 1/2 Gulf Street, Bakersfield, CA Davies Oil 050072 Dear Mr. Chan: In confirmation of our September 20, 1991, telephone conversation regarding the remedial action plan for the subject site, this Department grants extension of its submittal from September 30, 1991, to October 30, 1991. If you have any questions regarding this matter, please call me at (805) 861-3636, extension 545. Sincerely, DG:cas Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program CC: Gayle Clark Bill Davies, Davies Oil Jong Han, Central Valley Regional Water Quality Control Board \050072-2.1tr 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 RANDALL L. ABBOTT DIRECTOR DAVID PRICE ili ASSISTANT DIRECTOR EnvironmentaJ Health Services Department STEVE McCAI ~ Fy, REHS, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO Planning & Development Services Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT September 5, 1991 Arthur Chan AEGS Environmental, Inc. 1050 Melody Lane, Suite 160 Roseville, CA 95678 SUBJECT: Location: Known As.' Permit #: 3305 1/2 Gulf Street, Bakersfield, CA Davies Oil 050072 Dear Mr. Chan: In confirmation of our September 5, 1991, telephone conversation regarding the remedial action plan for the subject site, this Department grants extension of its submittal to September 30, 1991. If you have any questions regarding this matter, please call me at (805) 861-3636, extension 545. Sincerely, DG:cas Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program CC: Gayle Clark Bill Davies, Davies Oil Jong Han, Central Valley Regional Water Quality Control Board \050072.1tr ' 2700 "M" STREET, SUITE 300. BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 Sumo L~ndc~ o. /Drive-in 404 :7 ~ o ,s 81|| Perk HO~I SCALE: 1"= 2,000' 0 2,000 GENERAL NOTES: BASE ,MAP FROM USGS 7.5 MINUTE TOPOGRAPHIC OILDALE. CALIF. Locations of of Apprwdmate City Bnkersfleld Fatrhaven Unit Municipal Water Supply Wells FIGURE 1 SITE LOCATION MAP Davies Oil Company 3305 1/2 Gulf Street Bakersfield, Ca. III AEGIS Job Number 90-204 DRAWN BY: Ed Bernard DATE: Aug. 12, 1991 REVIEWED BY: DATE: · 5 · 10 · 15 . 20 . 25 , 3O ' 35 , 40 45 ' 5O 55 A MW-14 SP SP D.004 ~3DL SW/GW TD= 49.0' 4" Dia. MW-13 BDL BDL TD = 55.0' 4" Dia. SP SW/GW SP NOTE: Samples Taken During Soil Boring Operation Analytical Results In ppm (parts per million) BDL = Below Detection Limits MW = Groundwater Monitoring Well RW = Recovery Well MW-9 MW-12 MW-2 MW-11 RW-~ MW-1 MW-10 -e- BDL SP TD = 28.4' 2" Dia. LEGEND 3.3 BDL TD = 55.0' TD = 25.0' 2" Dia. TD = 31.0' 2" Dia. TD = 35.O' 2" Dia. Benzene Concentration TPH - Gasoline Concentration Screened Interval Total Depth Diameter of Well TD = 36.0' 12" Dia. TD = 30.0' 2" Dia. SCALE: Horizontal 1" = 60' Vertical 1" = 10' Vertical Exaggeration 6x 10-- I 0 60 FIGURE 8 CROSS SECTION A-A' Davies Oil Company 3305 1/2 Gulf Street Bakersfield, Ca.' AEGIS Job DRAWN BY: Ed Bernard REVIEWED BY: Number 90- 204 DATE: Aug. 7', 1991 DATE: PIERCE ROAD UPS Storage Area Pipe Storage Jim's Steel And Supply Teamsters Local Union No. 87 Abandoned Private Well Truck Wash Rush Swoape Properties Kernville Stage And Freight Open Lot Truck Parking Ken Cummings i Diesel MW-2 ~ Building _~MW-16 Daves Oil Company Infiltration Gallery (covereo sudace) Approximate Scale 1" = 100' 0 100 Monitoring Well Recovery Well Dry Well Leak S°il Boring Approximate Locations Of Existing/Proposed Buried Utilities NOTE: Site Sketch After Site Vicinity Map By Delta Environmental Consultants Inc. Project # 40-87-326 January 17, 1991 FIGURE 2 SITE MAP with SOIL BORING and MONITORING WELL LOCATIONS Davies Oil Company 3305 1/2 Gulf Street Bakersfield, Ca. AEGIS Job Number 90-204 DRAWN BY: Ed Bernard DATE: Aug. 6, 1991 REVIEWED BY: DATE: Gro. ndwater RecoveryIVapor' ~J~,,.,.'tion Well (6" 'casing) pvc Camng F'd~t Pm:i; ~13 8and I~imum 2' Annulu~ 0.020 Mm:Nm Sl~ PVC Well 30' ~ PVC C~o Typical Groundwater Recovery/Vapor Extrac~on Well Constru~on Details (6' Casing) MW-12 NOT TO SGALE) JOBNUMBER 90-2O4 RGURE 15 IGroundwater Monitorin'~/Rec~: 2- apor Exitacfion Well (4" casing) Exim~ng Ora,*,, VOL CC. A~/ G.P. oc/T 4. Blanl( Schec]ule 40 PVC C~mng F~ltef. Pac~ 13 Minimum 2" Annulus 4' Sche<lule 40 0.020 I~c~ine Sim PVC Well Screen 10" Dian~er ~ore Hole 30' ~ PVC c~ Conceptual Groundwater Monitoring Wells Construction Details (4" Casing) MW-1 MW-11 MW-14 NOT TO SCALE') JOB NUMBER 90-204 RGURE 16 R - 1RCE MANA6EMENT RANDALL L. ABBOTr DIRECTOR DAVID PRICE I!! ASSISTANT DIRECTOR Environmental Health Services Department STEVE McCALLEY, REHS, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO Planning & Development Se~ices Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT July 19, 1991 Mr. Bill Davies Davies Oil Company P.O. Box 80067 Bakersfield, CA 93380 SUBJECT: Location Known As Permit # 3305 1/2 Gulf Street, Bakersfield, CA : Davies Oil Company 050072 Dear Mr. Davies: Per telephone conversation with Sudhakar Talanki of Delta Environmental Consultants, Inc. on July 15, 1991, it is our understanding that they are no longer the primary environmental contractor for the assessment and remediation project at the subject site. In reviewing our records, the following summarize the project status in accordance with the work and schedule proposed in the February 28, 1990 and August 24, 1990 reports: Four groundwater monitoring wells were installed and sampled following the completion of the soil gas vapor survey. A copy of the water sampling results was submitted to this office in February, 1991. Laboratory data indicated the presence of benzene, toluene, xylenes and ethylbenzene (BTX & E) in the three new wells (MW-13, 14 & 15) placed offsite and downgradient from the Davies Oil underground tank facility. In April, 1991, all the onsite groundwater wells except MW-16 were dry. Therefore, no semiannual monitoring was performed as scheduled. For the next phase of this investigation as shown in the project schedule, remedial options were to be evaluated and a remedial action plan (RAP) was to be submitted for our review and approval. In our response to one of the earlier reports/proposals, we already approved the use of a vapor extraction system (VES) utilizing the existing dry wells to remediate the contamination in the vadose zone. The details of the system, however have to be provided to this office prior to installation. 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 (8O5) 861-3636 FAX: (805) 861-3429 Mr. Bill Davies July 19, 1991 Page 2 If you decide to proceed with the vapor extraction, please submit the RAP by August 16, 1991. Should you decide on a different remediation option, the alternative must first be approved by this Department. Regardless of the remediation option chosen, th!_s_.!._n..f_0_~.~!~.n_, has to be submitted in writing to this office within 15 days from the date of this letter. Please include all pertinent changes to the previous proposals/schedule as a result of the change in contractor. If you have any questions regarding this matter, please call me at (805) 861-3636, Ext. 545. Sincerely, DG:ch CC: Dolores Gough Hazardous Materials Specialist Hazardous Materials Management Program Gayle Clark 6060 Sunrise Vista, Ste. 2500 Citrus Heights, CA 95610 Jong Hah Central Valley RWQCB gough~lavies.ict Delta Environmental Consultants, Inc. 3330 Data Drive, Suite 100 Rancho Cordova, CA 95670 916/638-2085 FAX: 916/638-8385 April 30, 1991 Mr. Jong Hah California Regional Water Quality Control Board, Central Valley Region 3614 East Ashlan Avenue Fresno, California 93726 Subject: Semiannual Ground Water Monitoring and Project Monitoring and Reporting Program No. 89-025 Davies Oil Company 3305-1/2 Gulf Street, Bakersfield, California Delta Project No. 40-87-326 Dear Mr. Han: The purpose of this letter is to inform that all on-site ground water monitoring wells except MW-16 (Figure 1), were dry in April 1991. Accordingly, the semiannual monitoring scheduled for April 1991 was not performed. Monitoring wells MW-13, MW-14, MW-15, and MW-16 were installed and sampled for dissolved hydrocarbons in January 1991. Sampling results were included in Delta Environmental Consultants's, Inc., Soil and Ground Water Analytical Results Report dated February 13, 1991. As you may be aware, the ground water recovery and treatment system operation continues to be shut down due to a decreasing water table. Please call me if.you, have any questions or need additional information. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Sudhakar Talanki Project Engineer/Manager ST:ecd Enclosure cc/enc: Mr. Bill Davies, Davies Oil Company, Bakersfield Ms. Delores Gough, Kern County Health Department Practical Solutions to Environmental Concerns ISTERS ).87 WASH RUSH SWOAPE PROPERTIES STAG~ RUSH SWOAPE PROPERTIES /STORAGE MW-5 ~,j , BUILDING M'W.3 - -1 ~AGE (C~ S~) TRAILER PARK North r ~ IdW-1 'i~ ~0, RW-1 RECOV~Y wed. u:X~T~i~ ,. DRY WELL LEAK SI. IBIVITTEO TO DELTA IN dULY, 1990 0 100 IrT FIGURE I SITE VICINITY MAP . . DAVIES OIL 3305 1/2 GULF STREET BAKERSFIELD, CA. 40-87-326 u-l. 1/17/91 ~ ,~.~,U. Xl~., ~-~,.,..~"o~ ' ~ No. ~I~-VlEW~D · 3 :.. ..c,c,c,c,c,c,c,c,~T.~12/9/ ~IF////,~, Consultants, Inc. PIERCE ROAD DRIVE WAY UPS BLI~.D~G gtORA~ .MW-13 PIERCE PLAZA [~. I] N0.87 ABANDON~ PRIVATE WI Mw-g 3'RUC MW-'~ MW I I MW-4 ~ ISLANDS UNDERGROUND STORAGE 'lANK Delta Environmental Consultants, Inc. £ 3300 Data Drive. Suite 100 (~ I~ ~,~:'~' Rancho Cordova, CA 95670 ~ /; 916/638-2085 FAX:916/638-8385 ~ ,~,! ~?. '~' '''''~' 0.c5 Mr. Jong Y. Han California Regional Water Quality Control Board, Central Valley Region 3614 East Ashlan Avenue Fresno, California 93726 Subject: Soil and Ground Water Analytical Results Monitoring Wells Installation - January 1991 Davies Off Company 3305-1/2 Gulf Street, Bakersfield, California Delta Project No. 40-87-326 Dear Mr. Han: Delta Environmental Consultants, Inc. (Delta), drilled and installed four additional ground water monitoring wells at the Davies Oil Company (Davies) site and adjacent properties (Figure 1). This letter report summarizes the results of drilling activities, soil sampling,' ground water sampling, and surveying events conducted during the second week of January 1991 at th6 Davies site located at 3305-1/2 Gulf Street, Bakersfield, California, and on adjacent properties. Site work was performed in accordance with Delta's Work Plan For Additional Off-Site Hydrogeological Investigation and Project Status report dated August 24, 1990. Ground water monitoring wells MW-13, MW-14, MW-15, and MW-16 were installed to depths of 49 feet below surface with the exception of monitoring well MW-15 which was installed at a depth of 48.5 feet below surface. Monitoring well MW-13 was installed in the west parking lot of Pierce Plaza (property owner - Mr. Cyril Andre) located at 3624 Pierce Road, Bakersfield, California (Figure 2). Right-of-Entry Agreement between Davies and Mr. Andre to conduct project work including monitoring wells installation was signed in August 1990. Monitoring wells MW-14 and MW-15 were installed at Jim's Steel and Supply Company, Inc., (property owner - Mr. Jim Boylan) located at 3530 Pierce Road, Bakersfield, California (Figure 2). A Right-of-Entry Agreement (Phase II) between Davies and Mr. Boylan was finalized and signed in January 1991. Monitoring well MW-16 was installed in the northeast portion of the Davies Oil Company property (Figure 2). During the drilling of each monitoring well, soil samples were collected at 5-foot intervals from the surface down to the soil and ground water interface. A portion of each sample was then screened with a photoionization detector (PID) to measure total organic vapor concentrations. PID readings of each 5-foot soil sample from monitoring wells MW-13 through MW-16 indicated nondetectable total orgaaic vapor concentrations. Mr. Jong Y. Han February 13, 1991 Page 2 Soil Analytical Results One soil sample was collected from immediately above the soil and ground water interface from monitoring wells MW-13 through MW-16 and submitted to a California-certified laboratory for chemical analysis of benzene, toluene, ethylbenzene, xylenes (BTEX), and total petroleum hydrocarbons (TPH) as gasoline, diesel 2, crude oil, jet fuel, kerosene, and Stoddard solvent. Laboratory analysis of soil samples indicated concentrations of BTEX to be below the detection limits in monitoring wells MW-13, MW-15, and MW-16. Only benzene was detected at 4 parts per billion (ppb) in the soil sample collected from MW-14. Concentrations of TPH in monitoring wells MW-13 through MW-16 were all below laboratory detection limits (Table 1). Copies of certified laboratory reports are presented in Enclosure A. Ground Water Analytical Results Ground water samples were collected from monitoring wells MW-13, MW-14, and MW-15 on January 10, 1991, and a ground water sample was collected from MW-16 on January 11, 1991. Prior to ground water sampling, at least four well casing volumes were removed from each well. All ground water samples were submitted to a California-certified laboratory for chemical analysis of BTEX and TPH as gasoline, diesel 2, crude oil, jet fuel, kerosene, and Stoddard solvent. Benzene concentrations ranged from less than 0.! ppb (MW-16) to 30 ppb (MW-14). TPH (as gasoline) concentrations ranged from less than 50 ppb (MW-13, MW-15, and MW-16) to 1,100 ppb (MW-14). Ground water analytical results are presented in Table 2. Copies of certified laboratory reports are presented in Enclosure B. Monitoring Wells Installation Four 4-inch-diameter monitoring wells were installed between January 8 and 10, 1991. The wells were constructed with 19 feet of Schedule 40 PVC riser pipe, 30 feet of 0.020-inch slot-size screen, #3 sand filter pack, and sealed with bentonite pellets (hydrated) and cement grout. Well constrUction details are presented in Enclosure C. The casing elevation of each newly installed well was surveyed relative to existing monitoring wells. Subsurface Soils Four soil borings were drilled on the site and vicinity and were completed as monitoring wells (MW-13, MW-14, MW-15, and MW-16). The monitoring well locations are shown in Figure 2. Soil boring logs are presented in Enclosure D. The soils beneath the site consist mostly of very fine to medium-grained sands and gravel. Mr. Jong Y. Han February 13, 1991 Page 3 Water Level Measurements, Ground Water Flow Direction, and Hydraulic Gradient Water level measurements were collected from the newly installed monitoring wells (MW-13 through MW-16)' on January 11, 1991 (Table 3). All other monitoring wells on site were dry. Water level · measurements indicate that the inferred direction of ground water flow beneath the site and vicinity is toward the southwest at a gradient of approximately 0.0065-foot per foot (Figure 3) and is consistent with previous measurements. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Jeff Wendt Geologist Sudhakar Talanki Project Engineer/Manager California Registered Geologist #2303 ST:JW:ecd Enclosures E V V V V ¥ V ¥ V V V V ~ ~ ~ v v V V V V ~ V V V V TABLE 3 Ground Water Level Data Monitoring Well MW-13 MW-14 MW-15 MW-16 Date Measured 01-11-91 01-11-91 01-11-91 01-11-91 Reference Elevation (feet above mean sea level) 409.91 408.63 409.78 410.52 Depth to Ground Water (feet) 36.62 36.31 36.35 32.35 Ground Water Elevation (feet above mean sea level) 373.29 372.32 373.43 378.17 ~.~\ ,..Oillk/u~etion ,~! ill'.-. ~11 ', ~11 "5'~-L~,/// \~""~ ' ~ ~ N..~~ ~ ~:~..~t ~,~'-.....¢o~ · ,~i.~ II II ~o~ II i.T*j · ~// l., ~e~ .. -~. ~ - : '= ", ' - . '¥'~-:_.-...._~,, -~z:~ ~ '?'....' ' ~ ~" ~F I ~ " 455 ~ ' . '. ~. 'k. ":' ' ~1 ' ' Il I. .= ' '-- . ~~mmS~h~ ~ ' ~ II ~.. II [[ ~ .... II .... I1- ' '.: "? ' . I ...---~ . ,~.. ~~~-----~. : ,, , ,~-~',, .~z?~ ..~ ,,~ ~:~ =. ~~':~ ~:.--.'..'. . , ,, -~ ........ ,, ..~ ~ ~... ... ,~>~ ~/~~ ~ .... -... ~ ~"~ ~. ~ ': .... · ' ' ~ * o ~ ~ ': r~-'6--~:'- · ~g :~. ~. ,,.~.)~ 0%:¢_ ol ~,.~:, ........ ~ / o f~ L...:~.~ .~'::o~ q ~ ~.:] ~'~,-"-,, '~ / ~.~ ~:~ ',.. II; =~:~ ~ ...... · ' . i'~ ..... J / .' ~ ~=: "-.'~o -~?' o'" o-' " J '~- : ~k '"'-'= "%~' . ..~o =:~ ..o. =o-' ...... ~ Iz .: [ ~ ~-"?,~'~~~~ ~, -- ,.s~;~ .Z' I:. ... F" ' · "~. ': ...... ~ .': -:""e ~-;- ~ . ..... ,., '~_~.~LA~ 39,. * : '" ~ ] -I ~ : I · ~ , ~.: . ~ I .......... , ,~ [/'- '~~ ~'/LII I~1 '~11~,',~1'11 '~ ~11~11~ ~]! ,, ~ ol ox~ " -~?~ r' ~'~~~~ GENERAL NOTES: j North BASE MAP FROM U.S.G.S.~) OILDALE, CA. ~ FIGURE 1 7.5 MINUTE TO.GRAPHIC SITE LOCATION MAP DAVIES OIL - 3305 1/2 GULF STREET BAKERSFIELD, CA. 0 2000 FT ~ ~ ~ ~ 40-87-326 I.H, 5/12/89 ~u~o~a~G[[ co~o~ ~[fi 1: 24,000 ~ ~ ~ ~ ~ SRT 5/25/89 ~1~ I~. PIERCE ROAD )ARK~G BAKERSFIELD A-1 SERVICE ACCO CABLE SPLICING OPEN SPACE STOR~ ~E DRIVE WAY UPS BUILDING tUILDIN(~ 8UaJ~NG eMW-15 MW-14 )FFICE PIPE STORAGE J~S STEEL AND SUPPLY COVERED STORAGE --"~'~'"'"~-MW-13CITY R.O.W.~ --'~ - PIERCE PLAZA CYRIL ANDRE PLANTEFLS I MW-8~ L AB PHI' KE )MW-S ~w-~ MW-11 TRAIL -~ OFFIC .~ RW-.~ MW-4 l~ PUMP ~ ISLAND~ ~DERGROUND ST~ AG E TANK EAMSTERS )CAL UNfON NO.87 fATE WELL TRUCK WASH RUSH SWOAPE PROPERTIES BUILDING [NVILLE STAGE ND FREtC-.-.-.-.-.-.-.-~IT · OPEN LO]; TRUC~ PARKING RUSH SWOAPE PROPERTIES ~s I~ESEL MW-2 ~ UNDID y~/~'~/$TORAGE MW-5 TANKS ~ .- ~'J// I I ! o~,c~ I 2 1/ -I ~,c~ I '1 ~ir~ ~1 I ~ui~iN~ ' OIL' I~l ISLANDS OIL _ ~ORAGE ~ ~ ~ C~ANY / INFIL~ ATION GALLEY (COVERED SURFACE) TRAILER PARK NO. 40~87-326 North LEGEND: e Mw-~ ~, RW-1 L MONITORING WELL LOCATION RECOVERY WELL LOCATION DRY WELL LEAK CYRIL ANDRE GRADING PLAN SUBMITTED TO DELTA IN JULY, 1990 0 100 Fi' SCALE FIGURE 2 SITE VICINITY MAP . DAVIES OIL 3305 1/2 GULF STREET BAKERSFIELD, CA. - Delta Environmental Con,ultanta., Inc. Teamsters LocaJ Union No. 87 Rush Swoape Properties - % Abandoned Private Well Truck Wash Kemville Stage And Freight Open Lot Truck Parking Infiltration GaJlery (covered sudace) Approximate Scale 1'= 100' 0 100 LEGEND Monitoring Well Recovery Well Dry Well Leak Approximte Locations Of Existing/Proposed Buried Utilities Inferred Extents Of Dissolved Hydrocarbons Inferred Extents Of Free Product Plum (Delta Feb. 28, 1990 Remedial Action Status & Semi Annual Groundwater Monitoring Report) FIGURE 2 SITE MAP Davies Oil Company 3305 1/2 Gulf Street Bakersfield, Ca. AEGIS Job Number 90-204 DRAWN BY: Ed B, qrnard DATE: Aug. 6, 1991 REVI.EWED BY:~~ DATE: l~/t<~l~//' PIERCE ROAD UPS Storage ,Ama Jim's Steel Supp~/ Pipe Storage NOTE: Site Sketch After Site Vinicity Map By Delta Environmental Consula Project # 40-87-326 January 17, 1991 2" PVC Pipe -- Vehicle Mounted 2 Home Power Regenerative Blower Fresh Air Intake ~ Water ~ Separator Monitoring Well Blower Carbon Canisters pilot Tube Flow FIGURE 3 PILOT TEST SYSTEM Davies OII Company 3305 1/2 Gulf Street Bakersfield; Ca. AEGIS Job No. DRAWN BY: Ed~Bernard REVIEWED BY:~/~ 9O-204 DATE: October 3, 1991 DATE: lO/,/~/~/I A'R'ACHMENT 1 PERMITS AIR POLLUTION CONTROL AUTHORITY 8~ersllele. Colifo~-nia g.~.~01 TsleOn~e: (80~) 8~--3682 TO CONSTRUCT ISSUE DATE: January 12, 1989 APPLICATION NO. 036]003 [XI~IRATION DATE: January ;12. ]993 DATE: September 13. 1988 AUTHORITY TO CONSTRUCT IS HEREBY GRANTED TO: DAVIES OIL COMPANY In the event an AUTHCRITY TO ~TRUCT i= reissued to a new o~ner, any emissions increase assigned to [his equipment during the initial Ne~ Source Review Process r~aina ~ith the initial bearer of [his dot.ont. AUTHORITY TO CONSTRUCT IS HERE..Y GRANTED FOR: Contaminated Groundwater Extraction and Treatment S,vstem CSee cttached sheets for eauipment descriDtion and conditions) $ 11 - I R 29S [ 27E 3305 1/2 Gull' Si:..Bakersfield Start-up Inspection Dote: Umon cc~m~letion of construction aha/or installation, please telemnone the ~anaqer of Engineering Eval- uation. This doc~'nent serves as a TID. PCRARY Permit to Ogerate only as provided by Rule 201 of the District'~ Rule~ and Regulation#. For the i~auonos of a Ps,nit Lo Operate. Rule 208 requires that the eaui~ent authorizes by t~i= ~l~ TO ~S~CT be installed uno operated in accoraance wlt~ the ¢onaitJons of a~roval. Changes to t~eae conaJtJons ~lt ~m maas by a~glicatJon one must be aagroved before SUCh c~ange= are maas. This aoc~ent does not authorize the ~i~=ion of air cast.inert ts in ezce== of Ne~ Source Revi~ limits (Rule ~:0.1) or Regulation IV~ission limits. ~ia=ion tasting reauire~nt= set forth in ~hi= aac~nt ~at ae satisfied Before a Permit to O~era[e can be grante~. Uanager of Engineering Evaluation Page 2 of 4 Pages 0161001 Continued E_~UIPMENT DESCRIPTION: Contaminated Groundwater Extraction and Treatment Syste~. including the following equipment and design speciflcatlonu: A. Maximum of two extraction wells with submersible hydrocarbon and water extraction pumps. B. 250 gallon recovered gasoline storage tank, C. Delta Coolin~ Tower S4-185-T air stripping column, 48 in. dia. x 25 ft. tall. D. 5 hp blower with 8000 cfm capacity. E. Four 1200 lbm liquid phase carbon absorption canisters. CONDITIONAL APPROVAL: Pursuant to Rule 209, "conditional approvaJ" is hereby granted. Please be aware that all conditions of approval remain in effect for life of project unless modifications are approved by Dis. trict. DESIGN CONDITION: Inlet to air stripping column shull be equipped with flowrate indicator. (Rule 209) OPERATIONAL CONDITIONS: Groundwater flowcate to air stripping column shall not exceed 144,000 gal/day. (Rule 210.1) Benzene flowrate to stripping column shall not exceed 0.30 gal/day. (Rules 210.1 & 419) To:al hydrocarbon f'lowrate to stripping tower shall not exceed 12.36 gal/day. (Rule 210.1) Stripping tower shall not operate longer than 3 years without an addi- tional risk assessment. (Rule 209) EMISSION. SAMPLING LIMIT: (Entire Stationary Source) Hydrocarbons: 3.16 ibm/hr (Total HC) (Rule ZlO,1) 0.09 Ibm/hr (as Benzene) (Rule 419) COMPLIANCE TESTING REQUIREMENTS: Compliance with emission sampling limit and operational conditions b & c shall shall be demonstrated by daily sample collection and analysis. Influent santples shall be collected at a point upstream from ~he air stripping column and analyzed for benzene and total hydrocarbons. Daily record of influent hydrocarbon and benzene content, influent flowrate (gal/day) shall be maintained and submitted to the District monthly. (Rule 108.1) Page 3 o£ 4 Pages 0161001 ConLinued STATE OF CALIFORNIA AIR TOXICS HOT SPOTS REQUIREMENTS: Facility shall comply with California Health and Safety Code Sections 44300 through 44384. (Rule 208.1) RULE 210.I (NSR) ANALYSIS VALIDATION: Maximum daily emission rate of hydrocarbons from this stationary source shall no: exceed dally amount si~own as "proposed" on attaci~ed emissi, on profiles. Maximum average monthly emission rate of hydrucarbons from thls stationary source shall not exceed number of days in month times daily amount shown as "proposed" on attached emission profiles. Average monthly emission rate shall be determined at end of each month by averaging previous 12 months of operation (fewer than 12 if new or seasonal source). Coma]lance with these emission limits shall be verified by. source operator (with fuel consumption data. operational data. etc.) on daily basis (maximum daily emission rate) and on monthly basis (maximum average monthly emission rate) and written documentation made readily available to District for period of one year. RULE 210.1 (NSR) SPECIFIC LIMITING CONDITIONS: (See attached emission profiles). ' E.-.issicn Profiles: Hydrocarbons Lbm/Day vs. Days/Yezr Lb~/Day Propcsed Profile = ~. ?~ KEFN AIR POLLUTION CONTRO~'~' PERMIT TO OPERATE Number: OlGlOOl IA: TELEPHONE: (805) 861-3682 PERMIT TO OI'ERATE IS IIEKI:BY (;RANTED IIA\'IES Oil. C(I.MI'ANY FOR EQUIPMENT LOCATED AT: 3305 1/2 Gulf Street. EQUIPMENT OR PROCESS DESCRIPTION: OPERATIONAL CONDITIONS LISTED BELOW Contaminated Groundwater Extraction Treatment System TIIIS PERMIT BECOMES VOID UPON ANY CHANGE OF OWNERSIIIP OR LOCATION. OR ANY ALTERATION. NOTE: The permJttee may be required to provide adequate sampling and testinM facilities. Equipment modification requires a new permit. REVOC~d)LE: This permit does not authorize the emission of air contaminants in excess of those allowed by the Rules and Regulations of the K.C.A.P.C.D. WILLIAM J. RODDY AIR POLLUTION CONTEL OFFICER BI': - For Period: 06-30-89 TO 06-30-90 CONDITIONAL APPROVAL: Compliance with all conditions of approval imposed by any applicable Authority to Construct is required for life of this equipment unless modified by application. EQUIPMENT DESCRIPTION: Contaminated Groundwater Extraction and Treatment ~vstem. includinc · the following equipment: Maximum of tWO extraction wells with submersible hyarocarbon and water extraction pumps, 250 gallon recovered gasoline storage tank, Oeica Cooling Tower S4-185-T air stripping columu. ?.5 hp bl°~er ~Jth 8000 cfm capacity, Four 1200 ibm liquid phase carbon absorption canisters. OPERATIONAL CONDITIONS: !. Groundwater flowrate to air stripping column shall not exceed 144.000 gal/day. (Rule 210,1) 2. Benzene flowrate to strippin~ column shall not exceed 0.30 gai/da.v. (Rule 210.1 & 419) 3. Total hydrocarbon flowrate to stripping tower shall not exceed 12.36 gal/day. (Rule 210.1 ) 4. Stripping tower shall not operate longer than 3 years without an additional risk assessment. (Rule 209) EMISSION SAMPLING LIMIT: Hydrocarbons: (Entire Stationary Source) 3.16 ibm.,'ht' (Tota~ HC) (Rule 210.1) 0.09 Ibm/hr (of Benzene) (Rule 419) DAV!ES OIL L;OMPANY Permit ::01¢;1{}01 {A) Pa~e :' COMPLIANCE TESTING REQUIREMENTS: Compliance with emission sampling limit a~md operational conditions b & c shall be demonstrated by weekly sample collection aqd analysis during first month of opera,~ion, and monthly thereafter. Influent .':amples shall be collected at a point upstream from time air stripping c61umn and analyzed for benzene and total hydrocarbons. Records of influent hydrocarbon and benzene content, lnfluent flowrate {ga~/dayl shall be maintained and submitted to the District montllly. (Rule 108.1) Environmental Consultants, Inc. p ' PROJ. NO. 1F ROJECT NAME: [~V' ~ ~ LPROJECT LOCATION: ~0' ~-~ IPROJECT MANAGER: SAMPLERS ..natu~) CHAIN OF CUSTODY ~/~'",.~ ~ -- Z~ ~' Delta Environmental Consultants, Inc. i~0~%~-'~..(0-O[ ~'~)~.' H~ 3330 Data Drive, SuitelO0 Rancho Cat.va. CA 95670 916/638-2085 · F~ 916/638-8385 Analysis Requested & Container Description SAMPLE ID SAMPLE LOCATION REMARKS Sealed far shipment by: (signature) Date Relinquished by: (Signature) Date Received by: (Signature) Data Received by: (Signature) Sampler Comments: White: Return with analytical results to Delta Yellow: Laboratory Copy Pink: Delta's Copy ( Air, Water & Hazardous Waste SamplmE., Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 967-4386 · Napa, CA 94558 · (707) 257-7211 · Fax (707) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 ° (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 Lab Number : H-0208-8 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA Analyzed : 01/18/91 Analyzed by: FA · Method : As Listed REPORT OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPLED BY SAMPLED BATE RECEIVED MW-13 Monitoring Water CONSTITUENT Jeff Wendt (CAS RN) 01/10/91 .01/15/91 ~PQL RESULT ~g/L ~g/L NOTE FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (100411) (107062) (106934) 0.1 2.0 0.5 1.2 0.5 1.2 0.5 0.8 0.1 ND 0. i ND 50. ND 50. ND 50. ND 50. ND 50. ND 50. ND Not Appl. 111. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory #131 -~RESULTS listed as 'ND' were not detected at or above the listed PQL (Practical Quantitation L~m~t) (1) ANALYZED by CAL DHS DRAFr TPH (modified) and EPA 8240 (GC/MS) (2) EXrRACTED by EPA 5030 (purge-and-trap) 01/22/91 MSD2/2S53A MH/rdl/cmo/elr/rcr HAISM2W Respectfully submitted, COAST-TO-COAST ANALYTICAL SERVICES, INC. Frank R. Guenther, Ph.D., Technical Director Mary Havlicek, Ph.D. President Air, Water & Hazardous Waste Samplm8 & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories '141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obisp~, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 967-4386 · Napa, CA 94558 · (707) 257-7211 · Fax (707) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Da~a Drive Suite 100 Rancho Cordova, CA 95670 Lab Number : H-0208-7 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA Analyzed : 01/18/91 Analyzed by: RJ Method : A~ Listed REFORT OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPLED BY SAMPLED DATE RECEIVED MW-14 CONSTITUENT Monitoring Water Jeff Wendt 01/10/91 01/15/91 (CAS.RN) *PQL RESULT Dg/L ~g/L NOTE FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purge. able Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (100411) (107062) (106934) 0.1 30. 0.5 3.6 0.5 42. 0.5 32. 0.1 0.3 0.1 ND 50. 1100. 50. ND 50. ND 50. ND 50. ND 50. ND 6.0 84. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory #131 ~RESULTS listed as 'ND' were not detected at or above the listed i~L (Practical Quantitation (1) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EXTRACTED by EPA 5030 (purge-and-trap) 01/22/91 MSD2/2S52A MH/rdl/cmo/dez/elr HAI~M2W Respectfully submitted, COAST-TO-COASTANALY~ICAL SERVICES, INC. Frf R~ ~e~ th~~~. Technical Director Gu n er, Ph D , Mary Havlicek, Ph.D. President .... North 4STERS / L LNON-- :).87/ ,/ TRUCK WASH ~ SWOAPE ILLE STAGE PROPERTIES RUSH SWOAPE PROPERTIES (~ MW-1 MONITORING WELL LOCATION ~ RW-1 RECOVERY WELL LOCATION [-----1 L__J (378.17) LEAK PROPOSED BUll_DING AS PER CYRIL ANDRE GRADING PLAN ~ TO DELTA IN JULY. 1990 GR~ WATER FI FVATION IN FEET ABOVE MEAN SEA LEVEL ~-,= .~__ WATER TAI~..E CONTOUR IN FEET --'"'"""" ABOVE NEAN SEA LEVEL ~ GROUND WATER FLOW DIRECTION · 0 100 FT SCALE FIGURE 3 WATER TABLE CONTOUR MAP - 1 / 1 1/91 DAVIES OIL ' · 3305 1/2 GULF STREET BAKERSFIELD, CA. PROJ F..CF NO. 40-87-326 FILE NO. REWS~ON NO. '1 PIERCE ROAD KFKING A-1 OPEN SPACE BATTERY SERVICE DRIVEWAY ACCO CABLE UILDIN( SPLICING (373.43) ~ (372.32) MW-13 STORAGE P~ESTORAGE PIERCE PLAZA PLANTERS KEF MW-12 i, STORAGE TANK ENCLOSURE A Soil Analytical Results for Monitoring Wells MW-13 through MW-16 Delta Environmental Consultants, Inc. pRoJ..o. ~ROJECT.AME: CHAIN OF CUSTODY ~/'~5 ~ -- ~--~) ~' Delta Environmental Consultants, Inc. 3330 Data Drive, Suite 100 Rancho Cordova, CA 95670 916/638-2085 · FAX 916/638-8385 Analysis Requested & Container Description LABORATORY SAMPLES SENT TO: ADDRESS: /ql .c~<..,~r'l~-".'~ SAMPLE ID DATE SAMPLE LOCATION REMARKS Sealed for shipment by: (signature) Sampler Comments: Date Date Received by: (Signature) Rellnclulahed by: (Signature) Date/Time Turnaround Time: Data Received by: (Signature) White: Return with analytical results to Delta Yellow: Laboratory Copy Pink: Delta's Copy Air, Water & Hazardous Waste Sam & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 967-4386 · Napa, CA 94558 · (707) 257-7211 · Fax (707) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 REPORT OF ANALYTICAL RESULTS Lab Number : Project : Analyzed : Analyzed by: Method : H-0208-1 40-87-326.01 Co Bakersfield'~ _~_~ 01/21/91 As Listed ,."¢/ Page 1 of 1 SAMPLE DESCRIPTION MATRIX' MW-13 36' Soil CONSTITUENT SAMPLED BY Jeff Wendt (CAS SAMPLED DATE RECEIVED -~PQL RESULT NOTE rog/Kg rog/Kg FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) To~al Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (100411) (107062) (106934) 0. 001 ND 0. 001 ND 0. 001 ND O. 001 ND 0. 001 ND 0. 001 ND 0.1 ND 0ol ND 0.1 ND 0.1. ND 0.1 ND 0.1 ND Not Appl. 109. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory #131 mRESULTS listed as '}~' were not detected at or above the listed PQL (Practical Quantitation Lqm~t) .(1) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EXTRACTED by EPA 5030 (purge-and-trap) 01/24/91 MSD2/2T06A MH/rdl/cmo/dez/elr/rcr HA21M2S Respectfully submitted, COAST-TO-COASTANALYTICAL SERVICES, INC. Fr f~Gue~nghe r~~ Mary ttavlicek, Ph.D. President Director Air, Water & Hazardous Waste Sampling, & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543a2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 967-4386 · Napa, CA 94558 · (707) 257-7211 · Fax (707) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 Lab Number : H-0208-2 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA Analyzed : 01/21/91 Analyzed by: RJ Method : As Listed REPORT OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPLED BY SAMPr.K~ DATE RECEIVED MW-14 36' CONSTITUENT Soil Jeff Wendt 01/09/91 .01/15/91 (CAS RN) *PQL RESULT NOTE rog/Kg mg/Kg FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (100411) (107062) (106934) 0. 001 0. 004 0. 001 ND 0. 001 ND 0. 001 ND 0. 001 ND 0. 001 ND 0.1 ND 0.1 ND 0.1 ND 0ol ND 0.1 ND 0. I ND · Not Appl. 107. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory#131 mRESULTS listed as 'ND' were not detected at or above the listed PQL (Practical Quantitation Limit) · (i) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EDfrRACTED by EPA 5030 (purge-and-trap) 01/24/91 MSD2/2T07A MH/rdl/cmo/elr/rcr HA21M2S Respectfully submitted, COAST-TO-COASTANALYTICAL SERVICES, INC. Fr~kR/~Gu/eint/~feg* . , h.her~~P1,D Technical Director Mary Havlicek, Ph.D. President (. Air, Water & Hazardous Waste Sampling, & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 9674386' · Napa, CA 94558 · (707) 257-721l · Fax C'/07) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 Lab bhamber : H-0208-3 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA · An~.lyzed : 01/21/91 Analyzed by: RJ Method : As Listed REPOR~ OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPT.F.D BY MW-15 36' Soil Jeff Wendt 01/10/91 . 01/15/91 CONSTITUENT (CAS RN) ,'~PQL RESULT NOTE FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable PetroleUm Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (100411) (107062) (106934) 0. 001 ND .0.001 ND 0.001 ND 0. 001 ND 0. 001 ND 0. 001 ND 0.1 ND 0.1 ND 0ol ND 0.1 ND 0.1 ND 0.1 ND Not Appl. 106. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory#131 ~RESULTS listed as 'ND' were not detected ac or above the listed PQL.(Practical Quantitation L~mit) '(1) ANALYZED by CALDHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EXTRACTED by EPA 5030 (purge-and-trap) 01/25/91 MSD2/2T08A MH/rdl/cmo/elr/frg/rcr HA21M2S Respectfully submitted, COAST-TO-COASTANALYTICAL SERVICES, INC. ankR. Guenther, Ph.D., Technical Director Mary Havlicek, Ph.D. President ( Air, Water & Hazardous Waste Sampl...o, & Consultation Cer~ied Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 ° Fax (805) 967-4386 · Napa, CA 94558 · (707) 257-7211 · Fax (707) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudtmkar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 Lab Number : H-0208-4 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA Analyzed : 01/21/91 Analyzed by: RJ Method : As Listed RETORT OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIFfION MATRIX SAMPLED BY SAMPLED DATE RECEIVED MW-16 36' Soil Jeff Wendt 01/10/91 . 01/15/91 CONSTITUENT (CAS RN) ~PQL RESULT NOTE mg/r,g rog/Kg FUEL FINGERPRINTANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarborm (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarborm (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) 000411) (107062) (106934) 0.001 ND 0. 001 ND 0. 001 ND 0.001 ND 0. 001 ND 0. 001 ND 0.1 ND '0.1 ND 0ol ND 0ol ND 0ol ND 0.1 ND Not Appl. 104. 1,2 CCAS is C~rtified by CA Department of Health Services: Laboratory #131 *RESULTS listed as 'ND' were not detected at or above the listed I~L (Practical Quantitation L~mqt) (1) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EX2IRACTED by EPA 5030 (purge-and-trap) 01/25/91 MSD2/2T09A MH/rdl/cmo/elr/llc/rcr HA21M2S Respectfully submitted, COAST-TO-COAST ANALYTICAL SERVICES, INC. ~~~1 Director Mary Havlicek, Ph.D. President ENCLOSURE B Ground Water Analytical Results from Monitoring Wells MW-13 through MW-16 Air, Water & Hazardous Waste Samplinr:,, & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste: 800 2400 Cumberland Dr. · San Luls Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 9674386 · Napa, CA 94558 · (707) 257-7211 * Fax (707) 226-1001 · Sacramento, CA 95826 * (916) 368-1333 * Fax (916) 362-2484 · Valparaiso, Indiana 46383 ° (219) 464-2389 ° Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 Lab Number : H-0208-6 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA Analyzed : 01/18/91 Analyzed by: TZ Method : As Listed REPORT OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPLED BY SAMPLED DATE RECEIVED MW-15 Monitoring Water Jeff Wendt 01/10/91 01/15/91 CONSTITUENT (CAS RN) *PQL RESULT Dg/L og/L NOTE FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (10041l) (107062) (106934) 0.1 1.5 0.5 1.1 0.5 1.0 0.5 '0.5 0.1 ND 0.1 ND 50. ND 5O. ND 50. ND 50. ND 50. ND 50. ND Not Appl. 113. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory #131 · *RESULTS listed as 'ND' were not detected at or above the listed PQL (Practical Quantitation L~m~t) (1) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EXTRACTED by EPA 5030 (purge-and-trap) 01/22/91 MSD2/2S51A MH/rdl/cmo/dez/elr HAISM2W Respectfully submitted, COAST-TO-COASTANALYTICAL SERVICES, INC. Frdnk R. Guenth , Ph.D., Technical Director Mary Havlicek, Ph.D. President Air, Water & Hazardous Waste Samplh,o, & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. Kellogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 967-4386 · Napa, CA94558 · (707) 257-7211. · Fax C;07) 226-1001 · Sacramento, CA 95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Sudhakar Talanki Delta Environmental Consultants 3330 Data Drive Suite 100 Rancho Cordova, CA 95670 Lab Number : H-0208-5 Project : 40-87-326.01 Davis Oil Co Bakersfield, CA Analyzed : 01/18/91 Analyzed by: RJ Method : As Listed REPORT OF ANALYTICAL RESULTS Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPLED BY MW-16 Monitoring Water CONSTITUENT Jeff Wendt 01fll/91 .01/15/91 (CAS RN) ~PQL RESULT ~g/L ~g/L NOTE FUEL FINGERPRINT ANALYSIS Benzene Toluene Ethylbenzene Xylenes 1,2-Dichloroethane (EDC) Ethylene Dibromide (EDB) Total Purgeable Petroleum Hydrocarbons (Gasoline) Total Purgeable Petroleum Hydrocarbons (Diesel 2) Total Purgeable Petroleum Hydrocarbons (Crude Oil) Total Purgeable Petroleum Hydrocarbons (Jet Fuel) Total Purgeable Petroleum Hydrocarbons (Kerosene) Total Purgeable Petroleum Hydrocarbons (Stoddard) BTX as a percent of fuel Percent Surrogate Recovery (71432) (108883) (100411) (107062) (106934) 0.1 ND 0.5 ND O.5 ND 0.5 ND 0.1 ND 0.1 ND 50. ND 5O. ND 50. ND 5O. ND 50. ND 50. ND Not Appl. 115. 1,2 CCAS is Certified by CA Department of Health Services: Laboratory#131 *RESULTS listed as 'ND' were not detected at or above the listed PQL (Practical Quantitation L~mqt) (1) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EXTRACTED by EPA 5030 (purge-and-trap) 01/22/91 MSD2/2S50A MH/rdl/cmo/dez/elr/rcr HA18M2W Respectfully submitted, COAST-TO-COAST ~~CAL SERVICES,vj~ ~ Ph INC. Frdnk R. Guenthe , .D., Technical Director Mary Havlicek, Ph.D. President ( Air, Water & Hazardous Waste Sampling, & Consultation Certified Hazardous Waste, Chemistry, Bacteriology & Bioassay Laboratories 141 Suburban Road 751 S. KeUogg, Suite A 1885 North Kelly Road 9333 Tech Center Dr., Ste. 800 2400 Cumberland Dr. · San Luis Obispo, CA 93401 · (805) 543-2553 · Fax (805) 543-2685 · Goleta, CA 93117 · (805) 964-7838 · Fax (805) 967-4386 · Napa, CA 94558 · (707) 257-7211 · Fax (707) 226-1001 · Sacramento, CA95826 · (916) 368-1333 · Fax (916) 362-2484 · Valparaiso, Indiana 46383 · (219) 464-2389 · Fax (219) 462-2953 CLIENT: Coast-to-Coast Analytical Services 141 Suburban Rd. Ste. C-4 San Luis Obispo, CA 93401 QC SPIKE RF2K)RT OF ANALYTICAL RESULTS QC Batch ID: HA18M2W Analyzed : 01/18/91 Analyzed by: RJ Method : As Listed Page 1 of 1 SAMPLE DESCRIPTION MATRIX SAMPLED BY SAMPLED DATE RECEIVED QC SPIKE Aqueous CONSTITUENT ePQL SPIKE RESULT 72REC NOTE ~g/L AMOUNT Dg/L FUEL FINGERPRINT ANALYSIS Benzene 0. Toluene 0. Ethylbenzene 0. Xylenes 0. 1,2-Dichloroethane (EDC) 0. Ethylene Dibromide (EDB) 0. Total Purgeable Petroleum Hydrocarbons (Gasoline) 50. Total Purgeable Petroleum Hydrocarbons (Diesel 2) 50. Total Purgeable Petroleum Hydrocarbons (Crude Oil) 50~ Total Purgeable Petroleum Hydrocarbons (Jet Fuel) 50. Total Purgeable Petroleum Hydrocarbons (Kerosene) 50. Total Purgeable Petroleum Hydrocarbons (Stoddard) 50. BTX as a percent of fuel Percent Surrogate Recovery 1.3 4.1 1.1 6.3 75. 16. 111. 1.4 4.4 1.1 6.2 NS NS 76. NS NS NS NS NS 16~ 111. 108. 107. 100. 98. 101. 1,2,3 CCAS is Certified by CA Department of Health Services: Laboratory#131 ~ RESULTS listed as 'NS' were not spiked. PQL'= Practical Quantitation Limit '(1) ANALYZED by CAL DHS DRAFT TPH (modified) and EPA 8240 (GC/MS) (2) EXTRACTED by EPA 5030 (purge-and-trap) (3) Spike was in analyte-free water. 01/22/91 MSD2/2S60A MH/rdl/cmo/dez/elr/llc/rcr H0208 Respectfully submitted, COAST-TO-COAST ANALYTICAL SERVICES, INC. Frank . , Ph.D., Technical Director Mary Havlicek, Ph.D. President ENCLOSURE C Well Construction Details for Monitoring Wells MW-13 through MW-16 INSTALLAi'i~N F]F M~NITE]R!NG FLUSH WELL PROJECT I]E3..TA N~ Davies Oil Company ~305{..?ulf Street, Bqkersfield~ 40-87-326 .~- M~NI133RING w~_..L Nb MW-13 g'I..~'VATII:INg, ]'UP JIF' RIS~R 409.91 .3 18.7 3O 55 '." ~ru · ' 1-10-91 ~ 3:00 pm 1022 B/3-89 12-inch steel 12 inch N/A 12 inch Grout 4-inch PVC Sch 40 .: Flush Threaded Grout 1 foot Ben toni te' Fe fiets 2 feet ~'v'C Sch 40 0.020 inch 4 inch x 30 feet 49 feet 49 feet 6 feet Native Sand & Gravel 10 inch A 1-10-91 { 2:40 I 36.56 Top of casing _ (' INSTALLATiDN DF' FLUSH HONITDR!NG WELL PREIJECT Davies Oil Company 3305~ Gulf Street, Bakersfield, CA 40-87-326 MONI'CBRING WELL NO. MW-14 CL.cVATIaNS, TOP CF" RISER 408.63 - --I F .3 18.7 30 49 1..3-, , .1-10-91 rm~ 3:20 pm 1022 B/3-89 12-inch steel 12 inch N/A 12 inch Grout 4-inch PVC Sch 40; Flllsh Thr~nded Grout 1 foot Bentonite Pei£%ts 2 feet #3 Sand FVC Sch 40 0.020 inch 4 inch x 30 feet 49 feet 49 feet N/A ,. ~/A ,. 10 inch A MON[T~ING ~,q~l~ ~ ~AT~D~ LEVE3. MF__.ASUR~MF=JNTS 1-10-91 I 10:10 am 36.27 i Top of casing _ ZNSTALLATiF]N QF M~NIT~R!N~ ( FLUSh WELL Davis Oil Company 3305{ Gulf Street~ Bakersfield~ CA .40-87-326 .... MW-15 Mr~NITISRING w~_..L NO. EL.~VAYI~Ng~ T~P ~ RI~ER 409.78~ 12-inch steel 12 znch ~/A }2 inch Gro~t , 4-Snch PVC"Sch 40: F!ushTh~nA~A Grout · 1 foot Bentonite Pel,~ets 2 feet #3 Sand pvc Sch40 0.020 inch 4 inch x 30 feet 48.5 feet 48.5 feet N/A N/A 10 inch 18.2 ~.:. 30 · ~ ~ - 48,5 ..1-10-91 3:45 pm 1022 B/3-89 1-10-91 I 4:53 pm 36.33 ,I I- ~ ~rr, Top of casinz INSTALLATi~N JIF FLUSh, M~N[T~R.TNG WELL Davies Oil Company R909~ ~IF ,~tr~t; R~ker,~fi~ld: CA 40-87-326 MONITORING W~_L NO. MW-16 ELEVATI[]Ng, 10P OF RISER GRSUND L-~VEL 410.52~ 18.7 30 49 1022 B/3-89 12-inch steel 12 inch f/A 12 inch Grout 4-inch PVC ~ch 40 < Fl~lsh Grout 1 foot Bentonite Pelle'ts 2 feet #3 Sand FVC bch 4u 0.020 ~ngh 4 inch x 30 feet 49 feet 49 feet N/A N/A 10 'inch A ~ATE: [ T~ ~al~R {_EVEL - 'i-ii-9i I8:55 am '32.35 I ! t - ~~, Top of casing ENCLOSURE D Soil Boring Logs from Monitoring Wells MW-13 through MW-16 P~anmT ~ / ~ON manmT I BORING ISHER? 1 OF 3 NL~(BER: 40-87-326 NUMBER: MW-13 Davies Oil Company 3305 1/_2-Gulf StreetTwi~ T~CC~~:horatories ~RTr.r.~NG Bakersfield, CA MEI~OD: H.S.A. Richard Lawrence RIG: (]HE-75 START: 10:10/01-08-91 ~: 1:00/01-08-91 LAND SURFACE ~ BY: OWNER: Cyril Andre RrRVkTION: Jeff Wendt STSEBC SI SR AYAE LO AN AE OBSERVATIO~ GENERAL M P M f O U M T M C DEPI~ DESCRIPITONS OF MATERIALS . OBSERVATION P E P ~ W N P P O AND OC~DITIONS INS~qUMENT: NOTES L L ~ T L L V SCARF. hNu E E ~ S E(ft) E(in) 1"= 4' UNITS: ppm ASi~HALT- ...... 1 -- SAND; very fine, tan~ pogr.ly-- 2, ~__.ded, m~caoecus an~ mo 3 -- CAM 1 4/. 5.0- 18" 5 SAND; very fine, tan~ pog. r.ly-- 0 No odor 7 -- 9 -- ~ 2 3/ 10.0- 18" 10 ShltD; vory f:i_n~ to fSr~, ... 0 No odor 11.5 -- 11 mist, occasiohal thin layers- -- of sandy silt (sp) 13 -- 14 CAM 3 3/ 15.0- 18" 15 SAND; very fine to fi~e, -- 0 No odor 16.5 clean, an~/lar, ~licaceous and. 16 moist, occasiohal thin layers of sandy silt (SP) 17 -- 18 19 -- CAM 4 4/ 20.0- 18" 20 SAND; very fine to fine, .' 0 No odor 21.5 cl.ea~., an~/lar, micaceous and- 21. moist, occasiohal thin layers- of sandy silt (sp) - 22 23 -- ~ 2:40 ~ 36.56 Jeff Wendt CASING 49' DEPTH TYPED NAME P~O3ECT ~ / ~~ PRflTECT I BORING ISP~MR~ 2 OF 3 NL~N~ER: 40-87-326 NUMBER: M~-13 D~vies O~ ~ ~D: H.S.A. ~fl~d, ~ ~~ ~~ ~G: ~-75 ~: 10:10/01~8~1 ~: 1:00/01-08-91 ~ ~~ ~ BY: ~: ~ ~ ~~~: J~f W~t STS~BC SI SR A Y A~ LO AN AE O~ON G~ M P ME O.U MT M C ~ ~~ OF~ O~~~ P E P 5 WN P P O ~ ~~ ~~: L L 5 T L L V ~R E E 5 S E(~) E(~) 1''= 4' ~: ~ ~ 5 ~ 25.~ 18" 25 ~; v~ f~ ~ f~, -- 0 No ~or 26.5 ~i~ ~, m~r 26 ~v~ clx, ~~ ~ (sp) 27 -- 28 29 300I / 18" 30 ~; V~ f~ ~ ~, 0 No ~or ~ 6 . - 31.5 -- ~1 ~, clx, ~- 31 ~ ~ ~ (~) -- 32 33 -- 34 ~ 7 11~ 35.~ 16" 35 ~ ~ ~; ~~ -- 0 No ~or 2~/ 36.5 -- ~, ~~, ~- 3i 36 ~1o~, ~t, -~io~ -- ~~ (SP/~ 37 -- 38 39 -- 40 ~ ~ ~; ~~ 41 ~1o~, weu, ~o~ -- 42 43 -- 44 45 ~ ~ ~; ~~ -- 46 ~1o~, ~t, ~io~ 47 -- ~ 2:40 ~ 36.56 ~G 49 ' D~ PRO3ECT NAME / LOCATION ISRO3ECT I BORING SHEET 3 OF 3 ~: 40-87-326I NUMBER: M~-13 Davies Oil 3305 1/_2-Gulf ~tr~et _~.CTO~_:. . . E~TLT.TNG Bakersfield, CA 'Aw~nang tmmorator~es METHOD: H.S.A. Richard Lawrence RIG: (/ME-75 STAR~: 10:10/01-08-91 ~: 1:00/01-08-91 C~%NER: Cyril Andre v. rRVATION: Jeff Wendt STSNBC SI SR AYAULO AN AE OBSERVATIO5 GENERAL P M ~ O U M T M C DEPI~ DESCRIFiTONS OF MATERIAIB OBSERVATION E P E W N P P O AND (~NDITIONS l~~: NOTES L ~ T L L V SCATS. hNu E ~ S E(ft) E(in) 1"= 4' UNITS: ppm 48 -- 49 50 SAND AND GRAVEL; medium- -- 51 co±ore~, occasloDm! _oghb____ les, wet (SP/GW~ 5.q -- 53 54 -- 55 ... Total DeDth 55.0 feet 56 Install %-inch monitoring -- -~ well 57 58 -- 59 60 -- 61 6_~ -- 63 64 -- 65 66 -- 67 68 -- 69 70 -- TI/qE 2: 40 ~ 36.5t5 Jeff DEPIIt T~ED lXlglVlE ~: 40-87-326 NL~MBER: b54-14 D~vies Oil ~ Bakersfield, CA H.S.A. Ric~ Lawrence RIG: lIME-75 STAR~: 2:00/01-09-91 ~: 3:45/01-09-91 OWNER: Jim Boylan k~RVATION: Jeff Wendt STSNBC SI SR A ¥ A U L O A N A E OBSERVATIO5 GENERAL M P M M O U M T M C ~ ~RIP1TC~S OF MATERIALS OBSERVATION P E P ~ W N P p O AND ~0NDITIONS IN~: NOTES L L E T L L V SCArR hNu E E 1R S E(ft) E(in) 1"= 4' UNITS: ppm 1 .S~ND; very fine. to fir~e~ ~ tang No odor 2 mlcaoeous, _txjgrAy graae~ -- and moist (SP) 3 -- 4 5 -- No odor 6 7 -- 8 9 -- CAM 1 4/ 10.0- 18" 10 SAND; very fine to fine, ' 0 No odor 11.5 tan, micaceous, poorly graded 11 and moist (SP) -- 13 -- 14 CAM 2 3/ 15.0- 18" 15 SAND; ve~_ fi~e to coarse, -- 0 No odor 16.5 well grand, d, anqula~., .mica- 16. .. ceous~ clean an~ moist, ~ .. oocaslonal thin layers os 17 sandy silt (SW) -- 18 19 -- 0 SAND; very fine to fine, sub 0 No odor CAM 3 4 20.0- 18,, 20 ., 21.5 clean, 21 , poorly ~raded and moist (SP) ~ 22 23 -- ~ 36.2'7 Jeff Wendt CASING 49 ' DEPI~H TYPED NAME PRfl]ECT NAME / IDCJLTION PRD3ECT IH)RING ISHEET 2 OF 3 NL~: 40-87-326 NUMRRR: M~-14 Davies O~ ~ ~fi~d, ~~~~ri~ ~D: H.S.A. ~~ ~~ ~G: ~-75 ~: 2:00/01~1 ~: 3:45/01~9-91 ~ ~~ ~ BY: ~: J~ ~1~ ~~~: J~f W~t S~SNBC SI SR AY AU LO AN AE O~~ M f MM OU MT M C ~ D~~S OF~ O~~ P f P B WN P P O ~ ~~ ~: N~ L L E T L L V ~TR E E R S E(~) E(~) 1"= 4' ~: ~ ~ 4 4/ 25.~ 18" 25 ~; ~ f~ ~ ~, -- 0 No ~or 26.5 -- ~i~ ~, clx, 26 ~~ ~ ~ (SP) 27 -- 28 29 -- ~ 5 6/ 30.0- 18" 30. ~; v~ f~ ~ ~, 0 No ~or 31.5 -- ~i~ ~, clx, 31 ~~ ~ ~ (SP) -- 32 33 -- 34 ~ 6 ~/ 35.~ 18" 35 ~ ~ ~; v~ f~ ~ 0 No ~or 36.5 ~, ~~, clx, ~-- 36 ~. ~io~ ~1~, wet (~/~) - 37 38 wee (~/~) - 42 43 47 ~ 36.27 D~ P~OJECT NAME / I39CATION PRO3~CT I BORING SHEET 3 OF 3 ~: 40-87-326I NUMBER: 554-14 Davies Oil ~ Bakersfield, CA Twining ~horatories MEI~OD: H.S.A. E~TI · RR: E~TI I,TNG Richard Iawrence RIG: (1~E-75 STAR~: 2: 00/01-09-91 OC~PLETED: 3: 45/01-09-91 IAND SURFACE ~ BY: OWNER: Jim Boylan k~RVATION: Jeff Wendt S ~ S NBC SI S R O~N~kMINARI A Y A U L O A N A E OBSERVATION GENERAL M ~ M M O U M T M C EEP/~ E~IPUIC~S OF MATERIALS OBSERVATION P ~ P B W N P P O AND OONDITIONS INSTRUMENT: NOTES L LE T L LV SCALE hNu E E R S E(ft) E(in) 1"= 4' UNITS: ppm 48 -- 49 50 -- Total Depth 50.0 feet 51 Install %-inch monitoring well 52 -- 53 54 -- 56 -- 57 59 60 -- 61 63 65 6t5~- _ 67 68 -- 69 70 -- TIME 10:10 $IGRA21.1RE ~ 315.27 Jeff Wendt CASING 49' DEPTH TYPED NAME ~ NAME / lfXlkTION i~ I BORING SP~TP 1 OF 3 NYdMI~R: 40-87-326I NUMBER: M~-15 Davies Oil 3305 1/_2-Gulf ~tr~etTwin~ ~ CC~.CTOR.-_ tories [R~IT$.YNG ~D: H.S.A. Bakersfield, CA Richard lawrence RIG: (/ME-75 STAR~: 8: 20/01-10-91 OOMPIETED: 10: 30/01-10-91 lAND SURFACE I39GGED BY: OWNER: Jim Boylan k~RVATION: Jeff Wendt AY L L E T L L V SCATR hNu E E R S E(ft) E(in) 1"= 4' UNITS: ppm 1 SAND; very fine to fine, -- micao~us, clean, 2 graded, t~n and moist 3 -- 4 5. -- 0 No odor 6 8 9 CAM 1 3/ 10.0- 18" 10,~- SAND; very fine to coarse, ' 0 No odor 11.5 -- well g~..~e~.L_micaceous, cleaB 13 -- 14 t' ... ~ 2 4/ 15.0- 18" 15. 8glqD; VO~_ fJ..no to coarso, -- 0 No odor 17 -- ~_9 CAM 3 9/. 20.0- 18" 20 SAND; very fine to fine, 0 No odor 21.5 _pgorly g~_-de~., micaceou~, 21 clean ahd moiSt (SP) -- 22 23 -- TIME 4:53 GI~ 36.33' Jeff Wendt CASING 48.5' DEPTH TYPED NAME NUMBER: 40-87-326 NUMBER: M~-15 Davies Oil Cc~Dany 3305 1/_2-Gulf Street CDNTRACTOR: ~RJ~.LING Bakersfield, CA Twining Laboratories MEI~OD: H.S.A. D~TT,TRR: I~TT,T,'~ Richard Lawrence RIG: CME-75 START: 8: 20/01-10-91 ~: 10: 30/01-10-91 IAND SURFACE ~ BY: OWNER: Jim Boylan ~RVATION: Jeff Wendt A~ M P M M O U M T M C ~ ~ESCRIP1TONS OF MATERIALS OBSERVATION P E P ~ W N P P 0 AND OONDITIONS IN~:: NOTES L LE T L LV SCALE hNu E E ~ S E(ft) E(in) 1"= 4' UNITS: ppm CAM 4 ~6~/, 25.0- 18" 25 SAND; very fine, poorly 0 No odor 26.5 -- gr~.d.ed, mlcacecus, clean and ~ 26 moist (SP) 27 -- 28 29 -- ~ 5 5/ 30.0- 16" 30 SAND; very fine to fine, 0 No odor 31.5 occasional medium, micaoeous, - 31 clean and moist (SP) - -- 32 33 -- 34 CAM 6 7/ 35.0- 18" 35 SAND; ver~ fi~e to fine, --' 0 No odor 36.5 oocasional .m.edium, micaceo~s,- 18 36 clean and moist (SP) 37 -- 38 39 40 SAND AND GRAVEL; very_ fine No odor -- to _coarse, well grad~_, 41 occasional cobbles, clean -- 42 43 -- 44 45 .... No odor 46 47. -- WATER LEVEL DATA G~OLOGIST TIME 4: 53 ._qlGN~TURE ~ 36.33 Jeff Wondt CASING 48.5' DEPTH TYPED NAME NUMBER: 40-87-326 NUMRRR: M~-15 Davies oil Cc~pan~ 3305 1/_2-G~f ~tGC~. : E~R/I.LTNG Bakersfield, CA Tw~CI~RIaboratories MEI~OD: H.S.A. Richard Lawrence RIG: C~E-75 STAR~: 8:20/01-10-91 ~:10:30/01-10-91 LAND SURFACE ~ BY: OWNER: Jim Boylan ~RVATION: Jeff Wendt S~ SNBC S I SR CC~TAMINAN/ AYAULO AN AE OBSERVATIO5 GENERAL M f M M O U M T M C ~ ~ESCRIPTIC~S OF MATER/ALS OBSERVATION P ~ P B W N P P O AND f~NDITIONS IN~: NOTES L LE T L LV SCALE hNu E E R S E(ft) E(in) 1"= UNITS: ppm 48 -- 49 50 Total Depth_ 50.0 feet 51 Install h-inch monitoring -- well 53 -- 53 55 56 -- 57 58 -- 59 60 - 61 63 - 63 64 -- 65 66 -- 67 6~ -- 69 TIME 4: 53 36.331 Jeff Wendt CASING 48.5' DEPTH TYPED NAME tSRO3ECT NAME / I/)CATION PRO3ECT I BORING ~ 1 OF 3 NUMRRR: 40-87-326I NUMBER: M~-16 Davies Oil C~mpany 3305 1/2-Gulf Street _~.CI~_: ERILLING Bakerfield, CA Twining Tahoratories METHOD: H.S.A. E~IT,rRR: DtAII.r.]-NG Richard Lawrence RIG: lIME-75 STAR~: 12: 50/01-10-91 ~: 3:15/01-10-91 IAND SURFACE LOGgeD BY: 09~qER: Bill D~vies k~RVATION: Jeff Wendt S ~ S NBC S I S R CONTkMINA~I A Y A U L O A N A E OBSERVATION GENERAL M ~ M M O U M T M C DEPTH DESCRIPI~ON~ OF MATERIALS OBSERVATION E P B W N P P O AND OC~D~ INSTRUMENT: NOTES LE T L LV SCALE hNu E E R S E(ft) E(in) 1"= 4' UNITS: ppm -- -G~AVEL- ....... 1 -- 2 3 -- 4 .~. 5 SAND; very fine to fine, -- No odor ~pgorly g~,-ded, micaceous, 6 clean an~ moist (SP) 7 -- 8 9 -- CAM 1 3/ 10.0- 18" 10 SAND; very fine to fi~e, 0 No odor 11.5 -- _pgorly g~_-de~., micaceous, 11 clean af~ moii~t (SP) - 13 .- 14 ~ 2 ~ 15.0- 18" 15 '- SAND;.very fine to .mpdium, --' 0 No odor 16.5 -- oocaslonal ~coarse, mlcaceousr 16 ---- clean and moist (SP) 17 -- 19 -- CAM 3 3~ 20.0- 10" 20 ~' SAND; .very fine to .mgdium, - 0 No odor 21.5 -- occaslorkqA .coarse, mcaceous; 21 clean and moist (SP) -- 22 23 -- ~ 8:55 . -v ~ 32.35 ,Jeff Worrlt ChSI~G 49 ' DI~:rlt-I TYPED RAI~ PRCOECT NAME / ~ON I~%CkTECT I BORING ~ 2 OF 3 N-dMR~R: 40-87-326I NUMBER: 554-16 Davies oil Campany 3305 l~_2-Gulf Street OONTRACTOR: Bakersfield, CA Twining Laboratories ~D: H.S.A. Richard Lawrence RIG: (1ME-75 LAND SURFACE ~ BY: OWNER: Bill Davies RrRVATION: Jeff Wendt S T S 5 BC S I SR CONTAMINAN~ A Y A ~ L O A N A E OBSERVATION GENERAL M P. M ~ O U M T M C DEPI~ DESCRIPITONS OF MATER/ALS OBSERVATION P E P E W N P P O AND CONDITIONS INSTRUMENT: NOTES L L E T L L V SCA~R hNu E E ~ S E(ft) E(in) 1"= 4' UNITS: ppm 26.5 -- to fine~ occasio~ ~ediu~. 26 with thin lay__e~s_ oi gr_a. vel -- occasional obhbles, ~ica- 27 ceo, s, clean and moist -- 28 29 -- ~5 50 30.0- 30 30.5 32 33 -- 34 CAM 6 9/ 35.0- 18" 35 SAND AND GRAVEL; very fine -- 0 No odor 36.5 to fine, occasiork31~ fuediu~ 36 with thin lay__e~s_ oI gg-_a, vel 37 ceous, clean and moist -- (SP/~) 38 39 -- 40 . 42 43 -- 44 45 -- 46 47, -- TIME 8: 55 SIGNATURE GWL 32.35 Jeff Wendt CASING 49 ' DEPTH TYPED NAME PRfl/ECT NAME / LOCATION PRfl/ECT I BORING SHEET 3 OF 3 ~: 40-87-326I NUMBER: MW-16 Davies Oil ~ 3305 1/_S-Gulf Street _C~.CTO_R: . ERIT,LING Bakersfield, CA Twining Laboratories ~D: H.S.A. ~ .~ RR: DRI T .~ .ING Richard Lawrence RIG: C~E-75 START: 12: 50/01-10-91 CC~PLETED: 3:15/01-10-9] LAND SURFACE I/DGGED BY: OWNER: Bill Davies ~RVATION: Jeff Wendt S ~ S NBC SI SR OONTAMINAN~ A Y A U L O A N A E OBSERVATION GENERAL M P M M O U M T M C DEPI~ DESCRIPITONS OF MATER/AIB OBSERVATION P E P B W N P P O AND (IINDITIONS INSTRUMENT: NOTES L LE T L LV SCALE hNu E E R S E(ft) E(in) 1"= 4' UNITS: ppm 48 -- 49 50 L, _ -- Total DeDth 50.0 feet 51 Install ~-inc~ monitoring 53 55 56 -- 57 58 -- 59 60 -- 61 63" 65 6'7 68 -- 69 70 -- TIME 8:55 SIGNATURE GWL 32.35 Jeff Wendt CASING 49' DEPTH TYPED NAME STATE OF CALIFORNIA PETE WILSON. Governor CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD-- CENTRAL VALLEY REGION SAN JOAQUIN WATERSHED BRANCH OFFICE: 36~4 EAST ASHLAN AVENUE FRESNO, CA 93726 PHONE: (209) 445-5116 FAX (209) 445-5910 4 February 1991 Mr. Bill Davies Davies Oil Company P.O. Box 800657 Bakersfield, California 93380 MONITORING WELL INSTALLATION AT DAVIES OIL COMPANY, BAKERSFIELD, KERN COUNTY We reviewed your report, dated 20 November 1990, regarding the October 1990 soil vapor survey conducted on your facility property and neighboring properties. The report was prepared by Delta Environmental Consultants, Inc. (Delta). Based on the soil vapor survey results, Delta selected three downgradient and one upgradient monitoring well locations. According to the report, a total of 25 soil vapor points, were installed to a depth of 25.5 feet below ground surface on your property and on Cyril Andre's and Jim Boylan's properties. Soil vapor samples were collected and analyzed for BTX and total volatile hydrocarbons (TVH) using a portable Gas Chromatograph. The soil gas survey results indicated that the TVH concentrations in the soil vapor range from less than I to 30,000 parts per million by volume. The plotted isoconcentration contours for TVH at 25.5 feet below ground surface indicate the areal extent of the petroleum hydrocarbon plume to be approximately 600 feet by 300 feet, with a maximum concentration on Mr. Andre's property. These contours also indicate that thear~al extent of the petroleum hydrocarbon plume does not extend under Pierce Road to the west. In addition to nine existing monitoring wells, a'total.of four new monitoring wells are proposed. 'Three of the four proposed monltomng wells will be located near the downgradient periphery of the petroleum hydrocarbon plume, as defined by the soil vapor survey. One upgradient monitoring well will be located near the existing on-site infiltration gallery to monitor upgradient hydrogeologic conditions. The proposed monitoring wells will be installed to a depth of 50 feet below the ground surface. Soil samples will be collected and analyzed for gasoline constituents if contaminated soil is encountered during drilling. Delta indicated in the report that a problem assessment and conceptual remediation plan will be submitted to our office in January 1991, after the proposed monitoring wells have been installed and sampled. MR. BILL DAVIES -2- 4 February 1991 We have no objection to Davies Oil Company implementing its monitoring well installation plan. If wells are not yet installed when you receive this, please notify us several days in advance of the date you will be drilling so that we can schedule a site visit to observe your procedures and collect samples.' Thank you for your cooperation concerning this matter. ques~,,ions, please telephone Jong Han at (209) 445-5553. JOHN M. NOONAN ~JSenior Engineer ~' If you have any JYH:mlc cc: ~Ms~Do.lores~Gough~.~Kern. County Health.~.Oepartment;:. Bakersfield-..e Mr. Sudhakar Talank.i, Delta Environmental Inc., Rancho Cordova Mr. Cyril Andre, Bakersfield Mr. Jim Boylan, Bakersfield. Delta Environmental Consultants, Inc. 3330 Data Drive, Suite 100 Rancho Cordova, CA 95670 916/638-2085 FAX: 916/638-8385 November 26, 1990 Mr. Bill Davies Davies Oil Company Post Office Box 80067 Bakersfield, California 93380 Subject: Soil Vapor Survey Report, Dated November 20, 1990 3305-1/2 Gulf Street, Bakersfield, California Delta Project No. 40-87-326 Dear Mr. Davies: Please find enclosed a copy of the above-referenced report. Additional copies of this report are being forwarded to the identified regulatory agencies and Messrs. Cyril Andre and Jim Boylan (adjacent property owners). This report includes results of the soil vapor survey conducted on October 10, 11, and 12, 1990, on your site and adjacent properties. Based on results of this survey, locations for three downgradient off-site monitoring wells are proposed in Figure 4 of the report. An additional upgradient monitoring well is proposed on your property (Figure 4). The monitoring well installation and sampling is scheduled to be performed in December 1990. ! will inform you of the exact dates once they become available. I will also be contacting Messrs. Andre and Boylan shortly to address any concerns they may have regarding monitoring well installation and sampling. Practical Solutions to Environmental Concerns Mr. Bill Davies November 26, 1990 Page 2 It has been a pleasure serving you on this project. If you have any questions regarding this report or the project in general, please call me at (916) 638-2085. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Sudhakar Talanki Project Engineer/Project Manager ST:law Enclosure cc/enc: Mr. gong Hah, California Regional Water Quality Control Board, Central Valley Region, Fresno Ms. Dolores Gough, Kern County Health Department Mr. Cyril Andre, Alice Andre Testamentary Trust, Bak~field Mr. Jim Boylan, Jim's Steel and Supply, Bakersfield RANDALL L. ABBOTT DIRECTOR DAVID PRICE !I! ASSISTANT DIRECTOR Environmental Health Services Department STEVE McCALLEY, REH$, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO Planning & Development Services Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT HAZARDOUS MATERIALS MANAGEMENT PROGRAM MONITORING WELL(S) PERMIT OWNER'S NAME: FACILITY NAME: Davies Oil Company PERMIT #: MW0099-05 MW0100-05 MW0101-05 M-W0102-05 DATE: November 21, 1990 FACILITY LOCATION: In the vicinity of 3305 1/2 Gulf Streeh Bakersfield~ CA. DRILLING METHOD: Hollow Stem Auger CONTRACTOR: West Hazmat LICENSE #: C57-559979 ENVIRONMENTAL CONTRACTOR Delta Environmental Consultants TYPE OF MONITORING WELL(S) Groundwater Monitoring NUMBER OF WELLS REQUIRED TO MONITOR FACILITY: Four GENERAL CONDITIONS OF THIS PERMIT: 1. Well site approval is required before beginning any work related to well construction. It is uniawful to continue work past the stage at which an inspection is required unless inspection is waived or completed. 2. Other required inspections include: conductor casing, all annular seals, and final construction features. 3. A phone call to the Department office is required on the morning of the day that work is to commence and 24 hours before the placement of any seals or plugs. 4. Construction under this Permit is subject to any instructions by Department representatives. 5. All wells constructed of PVC located at a contaminated site where degradation may occur must be destroyed after 2 years or prove no degradation is occurring or has occurred. 6. Any misrepresentation or noncompliance with required Permit Conditions or Ordinance will result in issuance of a "STOP WORK ORDER."' 7. A copy of the Department of Water Resources Driller's Report, as well as copies of logs and water quality analyses, must be submitted to the Health Department within 14 days after completion of the work. 8. A well destruction application must be filed with this Department if a well is being destroyed that is not irt conjunction with a test hole permit. 9. The permit is void on the ninetieth (90) calendar day after date of issuance if work has not been started and reasonable progress toward completion made. Fees are not refundable nor transferable. 10. I have read and agree to comply with the General Conditions noted above. SPECIAL CONDITIONS: 1. Approved Annular Seal Depth 16' + (Bentonite). 2. Cement Grout To Surface. 3. PVC Screens In Contamination Must Be Destroyed After 2 Years Unless An Exemption Is Given By This Depart ment. This permit must be signed by either the contractor or owner. OWNER'S SIGNATURE DATE CONTRACTOR'S SIGNATURE PERMIT APPROVED BY: Brian Pitts, Hazardous Materials Specialist DATE: November 21, 1990 BP:cas 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 DATE mw0099-05.per (805) 861-36.36 FAX: (805) 861-3429 DATE START REMOTE TERMIMAL MODE TIME PAGES RESULT NOV 21 16:17 19166382085 GBT 01'19" 002 OK RANDALL L ABBOTT Director DATE: FROM: I RESOURCE MANAGEMENT AGENCY TRANSMI TTAr- SHEET RESOURCE MANAGEMENT AGENCY ENVIRONMENTAL HEALTH SERVICES MANAGEMENT SERVICES DIVISION DEPARTMENT TO: Name tom.ny~Department FAX NO.: TOTAL'PAGES (including coVer sheet) COMMENTS: 2700 "M" STREET, SUITE 350 BAKERSFIELD, CALIFORNIA 93301 REC~'CLED PAPER (805) 861-3502 FAX: (805) 861-3429 RE$ RCE MANA6EMENT RANDALL L. ABBOTT DIRECTOR DAVID PRICE I!! ASSISTANT DIRECTOR Environmental Health Sen~ice~ Department STEVE McCA! i Fy, REHS, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO F~nning & Development ~s Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT HAZARDOUS MATERIALS MANAGEMENT PROGRAM MONITORING WELL(S) PERMIT OWNER'S NAME: FACILITY NAME: Davies Oil Company PERMIT #: MW0099=05 MW0100-0S MW0101-05 M'W0102=05 DATE: November 21~ 1990 FACILITY LOCATION: In the vicinity of 3305 1/2 Gulf Street, Bakersfield, CA. DRILLING METHOD: Hollow Stem Auger CONTRACTOR: West Hazmat LICENSE #: C57-559979 ENVIRONMENTAL CONTRACTOR Delta Environmental Consultants TYPE OF MONITORING WELL(S) Groundwater Monitoring NUMBER OF WELLS REQUIRED TO MONITOR FACILITY: Four GENERAL CONDITIONS OF THIS PERMIT: l. Well site approval is required before beginning any work related to well construction, It is unlawful to continue work past the stage at which an inspection is required unless inspection is waived or completed. 2. Other required inspections include: conductor casing, all annular seals, and final construction features, 3. A phone call to the Department office is required on the morning of the day that work is to commence and 24 hours before the placement of any seals or plugs. 4. Construction under this Permit is subject to any instructions by Department representatives. 5. All wells constructed of PVC located at a contaminated site where degradation may occur must be destroyed after 2 years or prove no degradation is occurring or has occurred. 6. Any misrepresentation or noncompliance with required Permit Conditions or Ordinance will result in issuance of a "STOP WORK ORDER." 7. A copy of the Department of Water Resources Driller's Report, as well as copies of logs and water quality analyses, must be submitted to the Health Department within 14 days after completion of the work. · 8. A well destruction application must be filed with this Department if a well is being destroyed that is not in conjunction with a test hole permit. 9. The permit is void on the ninetieth (90) calendar day after date of issuance if work has not been started and reasonable progress toward completion re. adc. Fees are not refundable nor transferable. 10. I have read and agree to comply with the General Conditions noted above. SPECIAL CONDITIONS: Approved Annular Seal Depth 16.~_' + (Bentonite). Cement Grout To Surface. PVC Screens In Contamination Must Be Destroyed After 2 Years Unless An Exemption Is Given By This Department. This permit must be signed by either the contractor or owner. OWNER'S SIGNATURE DATE CONTRACTOR'S SIGNATURE PERMIT APPROVED BY: Brian Pitts~ Hazardous Materials Specialist DATE: November 21, 1990 BP:cas 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 DATE mw0099-05.per (805) 861-3636 FAX: (805) 861-3429 Delta Environmental Consultants, Inc. 3330 Data Drive Rancho Cordova, CA 95670 916/638-2085 FAX:916/638-8385 November 7, 1990 Mr. Brian Pitts Environmental Health Division Kern County Health Department 2700 "M" Street Bakersfield, California 93301 Subject: Monitoring Well Locations for Permit Application Davies Oil Company, Bakersfield, California Delta Project No. 40-87-326 Dear Mr. Pitts: Monitoring well permit applications were submitted for the referenced site in my letter to Ms. Delores Geough dated August 22, 1990. I was informed shortly thereafter by Ms. Laurel Funk that the well permits were approved pending submittal of the proposed mon/toring well locations. It was agreed that the well permits would be held by your office until the well locations were submitted. Following completion of the permit process, the well permits would receive final approval and be distributed. I have enclosed a map showing the proposed monitoring well locations as requested by your department. Please complete the monitoring well permits for MW-13, MW-14, MW-15, and MW-16 as soon as conveniently possible. Contact me if you have any questions. The drilling is scheduled to be performed on November 27, 28, and 29, 1990. Your department will be contacted as required for the grout inspection. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Martin S. Burck Hydrogeologist MSB:ecd Enclosure Practical Solutions to Environmental Concerns DRIVE WAY PIERCE ROAD PLAZA Mw.~.< UNOER~:~Ot. JND STORAGE TANK Nortt~ =~ ~,? ~ VAPOR PO~T ~ MW-1 MONITORING WELL LDCATION (~ I~Y WELL o IOOF-T FIGURE 3 ISO-CONCENTRATION CONTOURS OF TOTAL VOLATILE HYDROCARBONS - OCT 10-12, 1990 DAVIES OIL 3305 1/2 GULF STREL=T ,I ' H 10/24/90 RANDALL L. ABBOTT Agency Director (805) 861-3502 STEVE Mc CALLEY Director RESOURCE MANAGEMENT DEPARTMENT OF ENVIRONMENTAL HEALTH SERvICEs 2700 M Street, Suite 300 Bakersfield, CA 93301 Telephone (805) 861-3636 Telecopler (805) 861-3429 AGENCY August 31, 1990 Mr. Bill Davies Davies Oil Company P. O. Box 80067 Bakersfield, CA 93380 Subject: Location: Known As: Permit #: 3305 1/2 Gulf Street, Bakersfield, CA Davies Oil Company 050072 Dear Mr. Davies: We have reviewed the August 24, 1990, workplan prepared by Delta Environmental Consultants, Inc., for the subject site. The proposal to conduct a soil gas vapor survey (SGVS) is acceptable and can be implemented as scheduled. Please notify this office at least 24 hours prior to starting the SGVS. If you have any questions regarding this matter, please call me at (805) 861-3636, extension 545. Sincerely, Dol ores Gough Hazardous Materi al s Speci al i st Hazardous Materials Management Program DG=cas CC: Jong Han, Central Valley Regional Water Quality Control Board Sudhakar Talanki, Delta Environmental \050072.1tr '$'rA~E O= CALIFORNIA ~" CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD-- OENTRAL VALLEY REGION SAN JOAQUIN WATERSHED BRANCH OFFICE' 3614 EAST ASHLAN AVENUE FRESNO. CA 93726 PHONE: (209) 445-5116 GEORGE DEUKMEJIAN, Governor 3 July 1990 Mr. Bill Davies Davies Oil Company Post Office Box 80067 Bakersfield, California 93380 DAVIES OIL COMPANY, REPORT OF INSPECTION Enclosed for your information is a copy of a report covering a recent inspection of the Davies Oil Company in the City of Bakersfield. Representatives from your consulting firm were present during the inspection. The report states that ground water is contaminated with gasoline and diesel constituents. Three monitoringwells and one recovery well contain free product. The report also indicates that Davies Oil Company is working to remediate contaminated ground water at the site. In the semiannual ground water monitoring report, dated 28 February 1990, Delta recommended installing an off-site ground water recovery well in the downgradient portion of the plume; however, they have been unable to obtain property access for installation and operation of the well(s). Six to tWjlve inches of free product were observed in monitoring wells near the property'boundary between Davies Oil and Mr. Andre. We are concerned that free product extends under the neighboring properties. We will write Mr. Andre and request that he provide access to his property or begin investigation and remediation of the plume. Regardless of Mr. Andre's response, free product should be removed whenever it is encountered in a well. Prior to 28 July 1990, please provide us with a report which contains a plan for removing the current accumulation of free product and any future accumulation of free product in the wells. DAVIES OIL COMPANY -2- Should you have any questions, please telephone Jong Hah at (209) 445-5170. JOHN M. NOONAN ,,~en ior Engineer JYH: jyh/fmc Enclosures cc: Ms. Dolores Gough, Kern County Health Department, Bakersfield Mr. Sudhakar Talanki, Delta Environmental Inc., Rancho Cordova Mr. Cyril Andre, Bakersfield Mr. Jim Boylan, Bakersfield INSPECTION REPOR~ '~1~ CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD - CENTRAL VALLEY REGION WDS NL~ER: 5D152159001 DISCHARGER: FACILITY NAME: DAVIES OIL COMPANY 3305 1/2 GULF STREET BAICERSFIELD ,CA 93308 CONTACT: WILLIAM C. DAVIES PHONE: 8053926113 GROUNDWATER CLEANUP PROJECT 3305 1/2 GULF STREET BAKERSFIELD ,CA 93308 CONTACT: WILLIAM C. DAVIES PHONE: 8053926113 Form Printed -> 12/28/89 STAFF: JYH ORDERS: ORDER NUMBER DATE ADOPTED TYPE 89-025 890224 WDR LAST INSPECTIONS: DATE TYPE VIOLATION? INSPECTION TYPE: [X] 1. "A" TYPE COMPLIANCE (SAMPLING) [ 2. "B" TYPE COMPLIANCE (NO SAMPLING) [ 3. NON-COMPLIANCE FOLLOW-UP [ 4. ENFORCEMENT FOLLOW-UP [ 5. COMPLAINT [ 6. PRE-REQUIRE~NT [ 7. MISCELLANEOUS PROGRAM COMPONENT TASK NUMBER: 1312__141 INSPECTION DATE: I__819__IL1!_I~191 Y Y M M D D CONTACT: MR. RTI I rlavTrc; INSPECTION SU~Y (100 character limit): Free product should be remmvPd. INSPECTO.'S INITIALS The treatment system is in good wnrking cnnditi, nn. N~d more s~te investigations.. ADDITIONAL COn, tENTS: Inspection Report follows. w~R ~SvIEw: N/A MONITORING PRO~ ~ZVIEW: N/A Was there a VIOLATION discovered during this inspection? YES [ ] NO [~ PENDING SAMPLE RESULTS [ ] NOT APPLICABLE Reviewed By: (If yes. you MUST attach a completed violation input form.) / ! DATA ENTRY DATE: INSPECTION REPORT PREINSPECTION FILE REVIEW Davies Oil Company is near Highway 99 between the Kern River and the Calloway Canal in the City of Bakersfield. Davies Oil discovered a loss of regular gasoline through inventory reconciliation during the winter of 1985. Subsequent tank testing confirmed a leak in the vapor lines. Davies Oil estimated the loss to be about 2,500 gallons of regular 'gasoline. Davies Oil retained Twin City Testing Corporation (TCT) to conduct necessary site investigations. In July 1986, TCT drilled four soil borings with maximum depth of 31.5 feet. The borings are along the site perimeter. The soils encountered at the site consist of silt and fine to medium grained sand. Soil samples were collected from all four borings at 13 to 17 feet depth range. Gasoline... contamination (3.3 mg/kg of benzene) was found only at boring B-1. All four soil borings were converted to monitoring wells (MW-l, 2, 3, and 4). Ground water was encountered at a depth of approximately 15 feet. The ground water flow direction was determined to be to the southwest. The analyses of ground water samples collected on 11 July 1986, from two monitoring wells (MW-2 and MW-3) indicated pollution with benzene (43-400 ug/1), toluene (110-310 ug/1) and TPH as gasoline (6,100-11,000 ug/1). MW-1 had approximately four feet of free product. No gasoline constituents were detected in MW-4. Low levels of gasoline constituents (1.8 ug/1 of.benzene) were detected in MW-4 when Sampled on 5 May 1987. A sketch showing the location of soil borings and monitoring wells is attached. In October 1986, three 10,000 gallon underground tanks were removed, and diesel fuel was detected in soil samples obtained from beneath the excavation. Five additional soil borings (four at the corners of the excavation rectangle) were drilled at the site (B-5, 6, 7, 8 and 9). Gasoline contamination was found only at boring B-5 (8.2 mg/kg of benzene and 1,150 mg/kg of TPH) at the depth of 16.5-17.5 feet. Two of the five soil borings (MW-8 and MW-9) were converted to monitoring wells on 5 May 1987. The analyses of ground water samples collected from MW-9 indicated pollution with benzene (1,155 ug/1), toluene (3,810 ug/1) and xylenes (15,380 ug/1). No gasoline constituents were detected in MW-8. In March lg88, an additional three monitoring wells (MW-lO, 11 and 12) were installed by Delta Environmental Consultants, Inc. (hereafter Delta), the new consulting firm for Davies Oil Company. The analyses of ground water samples collected from the monitoring wells (MW-11 and 12) indicated pollution with benzene (600-10,000 ug/1), TPH (ND-240 mg/kg) and other gasoline constituents. A low concentration of benzene (2.2 ug/1) was detected in MW-lO. From the investigation results described above, Delta concluded that two different plumes of dissolved petroleum constituents extend from the area of MW-1 and MW-3 off site to the southwest and recommended ground water remediation. Delta installed one recovery well(RW-1) on 2 May 1988. The water treatment system which is designed to pump ground water from the recovery well into a packed column air stripper to remove dissolved petroleum hydrocarbons was installed and commenced operation on 29 June 1989. The effluent from the air stripper is pumped through a particulate filter to remove particles and through two activated carbon filters in series to remove any remaining hydrocarbons DAVIES OIL COMPANY -2- before discharge to the on site infiltration gallery. The Regional Board adopted Waste Discharge Requirements for Davies Oil in February 1989, by Resolution No. 89-025. To further delineate the extent of contaminant plume(s) and to check the effectiveness of the recovery well system, Davies Oil has been planning to conduct site investigations and to install monitoring wells at downgradient locations. In a report dated 18 August 1989, Delta proposed to install three additional monitoring wells (MW-13, 14 and 15) in the downgradient portion of the plume. In the report, monitoring well MW-13 is planned on Mr. Cyril Andre's property, and monitoring wells MW-14 and 15 are planned on Mr. Jim Boylan's property. Davies Oil has been attempting to secure permission for entry from the two neighboring property owners (Mr. Andre and Mr. Boylan). According to Delta's report, dated 6 September 1988, Mr. Andre and Mr. Boylan refused to grant Delta the right of entry to install the proposed monitoring wells. INSPECTION On 9 November 1989, I inspected the facility. I was accompanied by Mr. Michael Westerheim, Delta's project engineer for Davies Oil. Mr. Westerheim informed me that the recovery well was pumping petroleum polluted water at a rate of 30 gallons per minute. Mr. Westerheim also informed me that all the monitoring wells are dry because the water table has dropped. He told me that the local ground water table has dropped approximately 9 feet during the last two years. At the time of my inspection, the ground water table was at about 25 feet below ground surface, and the depths of monitoring wells were between 17 to 24 feet. At the time of my inspection, the air stripper unit and carbon filtration systems were in good working condition. During the inspection, I collected ground water samples from recovery well RW-1. I also collected effluent samples from the air stripper and carbon filtration system. I delivered those water samples to APPL Labs of Fresno on 13 November 1989, to be analyzed for purgeable aromatics, purgeable halocarbons and total petroleum hydrocarbon .as diesel using EPA test methods 602, 601 and modified 8015. The laboratory test results indicated that the water sample from RW-1 is polluted with benzene (21 ug/1), toluene (56 ug/1), xylenes(lO0 ug/1) and TPH as diesel (271 ug/1). No 601 chemicals were detected in water from RW-1. The test results for the effluent samples from the air stripper and carbon filtration system indicated nondetectable for all constituents tested. A copy of the laboratory test results is attached to this report. After sampling, I observed gasoline free product bailed from MW-11 (about 6 inches thick) and MW-12 (about I foot thick). Then I met Mr. Cyril Andre and Mr. Jim Boylan. I discussed with them Davies Oil's current cleanup efforts and site evaluation activities. I told them that contaminant plume(s) might have already migrated under their property, and Davies Oil needs to have access to their property for site investigation and cleanup. I explained that activities could include, but not necessarily be limited to, a soil vapor survey, monitoring and possible recovery well installations. Mr. Andre expressed his concern about disturbance to his tenants during Delta's site DAVIES OIL COMPANY -3- investigations and monitoring well installations. Mr. Boylan expressed his interest in receiving all the correspondence between Davies Oil and the Regional Board. I told them that their refusal to allow property access for site cleanup was contributing to the spread of ground water contamination. I also told them that the Regional Board can issue a Cleanup and Abatement Order (C&A) to a person or party Who contributes to the spreading of ground water contamination. I also explained to them that once a C&A is issued, the responsibility of the site investigation and cleanup is shared by all parties named on the C&A. It is my understanding that Mr. Boylan granted property access to Delta for site . investigation and cleanup after this inspection. DISCUSSION AND RECOMMENDATIONS The information provided by Davies Oil indicates that leaks of gasoline and diesel has resulted in soil and ground water contamination at the site. Petroleum hydrocarbon constituents are present in ground water at various locations at the site. I have the following comments: 1. Delta indicated that two possible plumes, approximately 600 feetlong, extend from MW-1 and MW-3 to the southwest under Mr. Andre and Mr. Boylan's properties. Delta proposed to install three additional monitoring wells to delineate the contaminant plumes (MW-13, 14 and 15) in August 1989. No monitoring wells have been installed at the proposed locations because Delta has been denied access to the properties south/southwest of the leak location. It is my understanding that recently Delta has been granted access to Mr. Boylan's property. Delta should proceed with those parts of the investigation and remediation that are possible at this time. 2. As I discussed with owners of the neighboring properties during my inspection, the Regional Board may need to issue a C&A to Mr. Andre if he continues to deny access for site investigation and remediation. I am especially concerned with the free product layer which is 6 to 12 inches thick. During my inspection, I observed the free product bailed from monitoring wells MW-l, MW-9 and MW-11 Which are located along the property boundary between Davies Oil and Mr. Andre's property. I believe the free product extends under Mr. Andre's property and should be removed as soon as possible. JYH:jyh/fmc I~"i,!.~E::;~,~E~~f~'~'[~(~i P°st'lt~routlng request pad 7664 ~ "~" :~'"'" ' "~'" ~; "~' ~'~'~'"'~? ~'~:'~:~':~'??'~'~?~?~"~?"'~ "'~ - R EQ U EST ..... ': :'~" "': .... ' ...... "" "' P~.as~ ROUTING [] READ J~ HANDLE [] APPROVE and ~:~ FORWARD Delta Environmental Consultants, Inc. 3330 Data Drive, Suite 100 Rancho Cordova, CA 95670 916/638-2085 FAX: 916/638-8385 August 22, 1990 Ms. Delores Gough 'Environmental Health Division Kern County Health Department 2700 "M' Street Bakersfield, California 93301 Subject: Revised Well Permit Application Davies Oil Company, Bakersfield, California Delta Project No. 40-87-326 Dear Ms. Gough: The purpose of this letter is to transmit the enclosed application for well permits. This application is intended to supercede the approved well permits numbered 0099-5 to 0102-5 (enclosed) issued by Amy Green with the Kern County Health Department on March 1, 1989. The monitoring wells approved by the March 1989 well permits were not installed because right-of-entry agreements were not granted by the surrounding property owners. Recently, right-of-entry has been obtained to Mr. Cyril Andres' property and Mr. Jim Boylan's property at the locations shown on the enclosed site map. The continually decreasing ground water level at the site has required modification of the well construction to include 30 feet of screen to a depth of 50 feet below the surface. This will accommodate future decreases and increases in the water levels at the site and allow uninterrupted operation of the remediation system. The off-site monitoring well locations will be selected within the available areas on Mr. Andres' and Mr. Boylan's property pending a possible soil vapor survey to help evaluate the lateral extent of the dissolved plume. The purpose of the off-site wells is to evaluate the downgradient and the lateral extent of the separate phase and dissolved petroleum hydrocarbon constituents within the soil and ground water. The monitoring well construction details are enclosed for your review. Our records indicate that the original permit fee of $1,340 has not been refunded. Amy Green indicated that the fees paid for the Practical Solutions to Environmental Concerns Ms. Delores Gough August 22, 1990 Page 2 March 1989 permits could be applied to the revised permits. If your records concur, we will assume the revised monitoring well permits submitted with this letter do not require additional fees. Please call me at (916) 638-2085 if you require any additional information. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Hydrogeologist MSB:ecd Enclosures cc/eric: Ms. Amy Green, Kern County Health Department, Environmental Health Division ENVIRONMENTAL ~{AZARDOUS MATERIAL3 MANA, G, ~MENT ~ROGRAM L~ M Meeee~ee, M.O. ' Ye'n~ t. ReIcI11J'd APPLZCATION FOR A PERMIT (CIRCLE ONE) CONSTRUCT, RECONSTRUCT, 'DEEPEN OR DESTROY A WELL C~PLaTZO, O~TE - (<~~ Co~ou~..._~ ON APPROV~O."~ST: (~' YES ( ) NO ' ~ sxTc: T ,,,?q5 ;~s(c. ~% ~o ACRt sue. ~ ~ ~ ~ GENEraL CdNO:TtONS OF ~E CERIIT~ - - ' ONNER'S'$iaNATURE APPLICATION APPROYED OATE: Nell 81te apaeoval Is eeQuf~ed baroca beginning any ~ek oelatH to ~et1 construction.' tt ~s unlawful to Othe. required tnsaecttone tnclude~ c~ductoe casing, ali annulee seals, and ftnal c~st~ucttm features. A ;~e call ta the Oe~C~C africa t~ ~tr~ m the ~entng ~f c~ day t~t ~ek la t~ co.mca and 24 ~rs ~for. the ~ac.~t of any sea~s oe a~ug~. ~scruc~t~ undee thte Peomtt (e subject ~o any {nst~uct~ by OepaPtm~t repeesmtattv~. ~f ~ 'Sto~ ~rk Ord.r.' A ~o~ of ~hl OQ~aPt~t Of ~aten ~eeourc~ Or~ller's Rm~rt am ~ell 41 coptes of' la~s and ~etgr qualfty c~juctlon with a test ~la pepmtc. r~able ~r~p~S :owend c~plettm ~de. Fm ere not ref~dlble nor t~fena~le. OATE C~TRA~OR'$ SI~lTUit OATE TO 2700 'M' Street. Ste. 300 Hakersfield. CA 93301 (805) 861-3636 HAZARDOUS MATERIALS MANAGEMENT PROGRAM MONITORING WELL(S) PERMIT KERN COUNTY Environmental Hea/th Services Department 'MW# 0099-5 MW# 0100-5 MW# 0101-5 MW# 0102-5 FACILITY' LOCATION: DRILLING METHOD: CONTRACTOR: West OWNER'S NAME: FACILITY NAME: Davies Oil Company 3305 1/2 Gulf St., Hollow Stem Auger Hazmat Drilling Go. TYPE OF MONITORING WELL(S) Ground Water NUMBER OF WELLS REQUIRED TO MONITOR FACILITY: DATE: 2-27-89 Bakersfield, GA LICENSE #: C57-559979 Four GENERAL CONDITIONS OF THIS PERMIT: 1. Well site approval is requtred before beginnin$ any work related to well construction. It is unlawful to continue work past the stage at which an inspection is required unless inspection is waived or.completed. · 2. Other required inspections include: conductor casing, all annular seals, and final construction features. 3. A phone call to the Department office is required on the morning of the day that work is to commence and 24 hours before the place~t of any seals or plugs. .- 4. Construction under this Permit ~s subject to any instructions by Oepartment representatives. 5. Any nHsrepresentation or non-compJiance with required Permit Conditions, or Ordinance wi1] resuJt in issuance of a 'STOP WORK ORDER.' 6. A copy of the Oepartment of Water Resources Oriller's Report as well as cop~es of logs and water quality analyses must be submitted to the Health Oepartment within la, days after completion of the work. 1. A well destruction application must be f~les w~th this Oepartment if a well is being destroyed that is not In conjunction with a test holepermit. 8. The permit is voidon the ninetieth (90) calendar day after date if issuance ~f work has not been started and reasonable progress toward completion made. Fees are not refundable nor transferable. 9. [ have read and agree to comply with the General Conditions noted above. . SPEC[AL CONO[T[ONS: 1. Approved Annular Sea10epth 1.5 feet 2. All wells completed w~th schedule 40 PVC screens ~n contaminated environments, must be destroyed after February 27, 1991. ([f no~;provided an exemption by the Environmental Health Oepartment). Th~s permit must be signed by either the contractor or owner.~ O~ER'5 SIGNATURE DAlE ~ CONIRACIOR'~ '51~AIURE AEG:cd (greenNdavies.mwp) OAIE / ' P/£RCE ROAD ~ARKING FPJCTION I OPEN SPACE 13 A-1 BATTERY SERVICE ACCO CABLE SPLICING DRIVEWAY STORAGE SUPPLY PIPE STORAGE PARKING-: '.: AREA ; UNDERGROU STORAGE TANK TEAMSTERS RUSH SWOAPE LOCAL UNION PROPERTIES NO.S7 TRUCK WASH PRIVATE WELL KEN RUSH SWOAPE : DIES~ : KERNVlLLE STA~I:: PROPERTIES AND FREIGHT OPE~ L~T i BU~,.D~N G W-9 TRUCK PARKING : -12 MW-2 ~W-1 " (t).~.LEAK ~W-;3 ~ OIL ~ ISLANDS ,,tp STORAGE INFILTRATION GALLERY (C.~VERED SURFACE) TR/~ER PARK North 40-87-326 ~ MW-~ ~ RW-1 JULY, 1990. ............ ~XIMATE LOCA~ O~ EXISTING/PROPOSED BURIED UTILITES MONITORING WELL LOCATION RECOVERY WFJ 1 LOCATION DRY WELL LEAK ~Y LOCATIONS ARE APPROXIMATE ONLY AND 0 IOOFT AD~ IVlSB 8/14190 SITE VICINITY MAP DAVIES OIL 3305 1/2 GULF STREET BAKERSFIELD. CA. MONITORING WELL CONSTRUCTI( FLUSH GRADE MANHOLE Delta No: .~r.O.,v..g.~,.. :2~.~,6 We,, No: ~.W. ;.!5. A..--..~,../(~ CONCRETE PROTECTIVE MANHOLE COVER - TYPE - DIAMETER AND MATERIAL - WATER TIGHT (YES/NO) - SPECIAL KEYS OR LOCKS REQUIRED RISER PIPE - DIAMETER AND MATERIAL - JOINT TYPE GROUT SEAL -TYPE OF GROUT AROUND RISER -GROUT SEAL THICKNESS BENTONITE SEAL - TYPE OF BENTONITE - BENTONITE SEAL THICKNESS FILTER PACK - DISTANCE OF FILTER SAND ABOVE TOP OF SCREEN - TYPE OF FILTER AROUND SCREEN WELL SCREEN - SCREEN MATERIAL - SCREEN GAUGE OR SLOT SIZE OF OPENINGS - DIAMETER AND LENGTH OF SCREEN · % ~.R. 4O PyC :;;to ~o'~ ~ o,o~ ;,,~.,~ DEPTH TQ BOTTOM OF MONITORING WELL FROM TOP OF RISER PIPE TOTAL BORING DEPTH DIAMETER OF BORE HOLE DRILLING METHOD ADelta Environmental Consultants, Inc. GARY J. WICKS A0ency Director (805) 861-3502 STEVE Mc CALLEY Director RESOURCE MANAGEMENT DEPARTMENT OF ENVIRONMENTAL HEALTH SERVICES 2700 M Street, Suite 300 Bakersfield, CA 93301 Telephone (805) 861-3636 Telecopier (805) 861-3429 AGENCY Hatch 22, 1990 Mr. Bill Davies Davies Oil Company P.O. Box 80067 Bakersfield, CA 93380 Subject: Davies Oil Company 3305 1/2 Gulf Street, Bakersfield, CA Permit No. 050072 Dear Mr. Davies: This Department has reviewed the February 28, 1990, "Remedial Action Status and Semi-annual Groundwater Monitoring Report" prepared by Delta Environmental Consultants, Inc. for the subject site. The report presented the following information: The Groundwater Recovery/Treatment system is currently not operating due to the inability of the groundwater pump in the recovery well (RW-1) to operate at the present water condition. Between June, 1989 and February, 1990, the water table dropped approximately 4.6 feet. Analytical data indicated that benzene concentrations from RW-1 ranged from 0.013 to 0.056 ppm. The TPH concentrations ranged from 0.5 to 3.3 ppm. The air stripper appeared to be 100% efficient in removing the dissolved hydrocarbon constituents. To date, the system has treated approximately 8,002,400 gallons of contaminated water. The free product recovered from RW-1 is approximately 57 gallons. The actual shape and extent of the hydrocarbon plume has been estimated but not actually verified through monitoring wells· Delta Environmental is recommending the following additional work for this site: Bill Davies Page Two March 21, 1990 a) b) c) d) Obtain right-of-entry from adjacent property owners/ Conduct vapor survey and install additional monitoring wells. Install a vapor extraction system (VES) using existing wells to remediate contamination in the vadose zone. Continue to monitor existing wells (that are not dry) for gasoline/diesel constituents. i.. 5, The groundwater treatment system will be temporarily shut down until site conditions warrant putting the system back in operation. This Department concurs with Delta Environmental's recommendations. Before Item (b) and (c) will be conducted, we require that a~workplan be submitted to this office for our review and approval. On Item (b), we are interested on information regarding the well locations and construction. On Item (c), we need a detailed description of the system, zone of influence, well locations, clean-up levels, safety considerations, among others. Please submit this workplan by May 15, 1990. If you have any questions regarding this matter, please call me at (805) 861-3636. sincerely, Dolores Bough Hazardous Materials Specialist Hazardous Materials Management Program DG:jg cc: Sudhakar Talanki, Delta Environmental Jong Ha~, CVRWQCB FACILITY: FILE CONTE.~ITS SUMMARY . ..'" { ...... '.~,'~,~'/--';'~;.c: .~ / ENV. SENSITIVITY. ~-"<' Activity Date # Of Tanks Comments WATER RESOURES CONTROL BOARD DIVISION OF WATER QUALITY UST CLEANUP PROGRAM SITE SPECIFIC QUARTERLY REPORT CONTRACTOR NO: SITE NO: SITE NAME: ADDRESS: CITY/ZIP: CASE TYPE: 15000 SOURCE OF FUNDS: 0500?2 FEDERAL EXEMPT: DAVIES OIL COMPANY 3305 GULF STREET BAKERSFIELD, CA 93308 SITE STATUS G CONTRACT STATUS 8 RP SEARCH: S PRELIMINARY ASSESSMENT: C REMEDIAL INVESTIGATION: C REMEDIAL ACTION: POST REMEDIAL ACTION MONITORING ENFORCEMENT ACTION TAKEN: RAP REQUIRED: cAsE CLOSED: DATE EXCAVATION STARTED: CONTACT NAME: COMPANY NAME: ADDRESS: CITY/STATE: S N DATE UNDERWAY: 11/06/86 DATE UNDERWAY: 02/25/87 DATE UNDERWAY: 01/10/88 DATE UNDERWAY: 08/18/89 DATE UNDERWAY: SUBSTANCE: 12034 PETROLEUM: Y DATE REPORTED: 11/06/86 DATE CONFIRMED: 11/06/86 CATEGORY: R EMERGENCY RESPONSE: DATE COMPLETED: 11/06/86 DATE COMPLETED: 11/30/87 DATE COMPLETED: 11/09/88 DATE COMPLETED: DATE COMPLETED: TYPE: DATE TAKEN: BILL DAVIES W.P. DAVIES OIL CO. P. O. BOX 80067 BAKERSFIELD, CA 93380 DATE APPROVED: DATE GLOSED: / REMEDIAL ACTIONS TAKEN: RESPONSIBLE PARTY SPECIALIST: 9 SENSITIVITY: ES VERIFIED (X) DATE OF REPORT: 12/19/89 / ! Delta Environmental Consultants, Inc. 3330 Data Drive Rancho Cordova, CA 95670 916/638-2085 FAX:916/638-8385 ..F.j.~(/iRO N M ENTAL HEALTH August 18, 1989 Mr. Bill Davies Davies Oil Company P.O. Box 80067 Bakersfield, California 93380 Subject: Remedial System Monitoring Report Davies Oil Company 3305-1/2 Gulf Street Bakersfield, California Delta Project No. 40-87-326 Dear Mr. Davies: Enclosed is a copy of the Remedial System Monitoring Report for the referenced.site. Additional copies of this report are being forwarded as noted below. This report fulfills the requirements for the remedial system start-up and monitoring as described in the monitoring and reporting program (MRP) No. 89-025. This report includes operational data for evaluating the performance and characteristics of the ground water treatment system at the site. Delta Environmental Consultants, Inc., will submit monthly reports from September 1989, to the California Regional Water Quality Control Board, Central Valley Region, and the Kern County Air Pollution Control District to inform progress of the site cleanup. Delta will pursue off-site investigation once right-of-entry is obtained from adjacent property owners.' It has been a pleasure serving you on this project. If you have any questions regarding this report or need additional information, please call me or Michael Westerheim at (916) 638-2085. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Sudhakar Talanki Project Engineer SRT:rc Enclosure cc/eric: Mr. Jong Han, California Regional Water Quality Control Board, Central Valley Region Ms. Amy Green, Kern County Health Department Mr. Steve Beyn, Kern County Air Pollution Control District Mr. Pete Campos, Kern County Air Pollution Control District Practical Solutions to Environmental Concerns Delta Environmental Consultants, Inc. ? 19 9 3330 Data Drive Rancho Cordova, CA 95670 ENVIRONMENTAL HEALTH 916/638-2085 FAX:916/638-8385 August 10, 1989 Mr. Steve Beyn Air Pollution Control District Kern County 2700 "M" Street, Suite 275 Bakersfield, California 93301 Mr. Pete Campos Air Pollution Control District Kern County 2700 "M" Street, Suite 275 Bakersfield, California 93301 Subject: Permit to Operate Packed Column Air Stripper Davies Oil Company 3305-1/2 Gulf Street, Bakersfield, California Delta Project No. 40-87-326 Dear Messrs. Beyn and Campos: Delta Environmental Consultants, Inc. (Delta), on behalf of Davies Oil Company, Bakersfield, California, received an Authority to Construct permit (Application 0161001, dated September 12, 1988) to install a packed column air stripper to remove dissolved petroleum hydrocarbons from ground water at the site. The permit (enclosed) allows a maximum discharge of 75 pounds of hydrocarbons per day from the site based on PTPLU (version 2.0) computer air dispersion modelling to meet an excess lifetime cancer risk of less than 1 in a million for the exposed population, from the proposed hydrocarbon emissions. An Authority to Construct Modification Permit application dated June 22, 1989, was submitted and it included a proposal to sample and analyze the air stripper influent water for hydrocarbons on a weekly basis for the first month after system start-up, and on a monthly basis thereafter. A copy of the modification permit is enclosed. Practical Solutions to Environmental Concerns Mr. Steve Beyn Page 2 August 10, 1989 Recovery System Start-Up and Inspection The permanent operation of the ground water treatment system started on June 29, 198.9, after final adjustments on June 27 and 28, 1989. The ground water treatment system, shown in Figure 1, is designed to pump ground water from the recovery well into a packed column air stripper to remove petroleum hydrocarbons. The effluent from the air stripper is pumped through a particulate filter to remove particulate matter and through two activated carbon filters in series to remove any remaining hydrocarbons. The water discharges to an infiltration gallery on site. The free product collected in the recovery well is pumped using a pneumatic pump into I 250-gallon tank. Automatic level controls are incorporated for safe operation of the system. The recovery well is pumping at 30 gallons per minute (gpm), and the first month's weekly influent and effluent air stripper samples have been collected as proposed in the Authority to Construct Modification Permit, and analyzed in the laboratory for fuel fingerprint. Mr. Campos made a site visit on June 29, 1989, to inspect and discuss operation of the system. He requested that the laboratory results from the weekly sampling of the air stripper influent and effluent be sent to him along with quantification of the total petroleum hydrocarbons (TPH) and benzene emission rates for review. After review of the Authority to Construct Permit and laboratory sampling results, he would issue a Permit to Operate for the packed column air stripper. The analytical results of the air stripper influent and effluent samples are included in Table 1. Copies of the laboratory results are enclosed. The results indicate a 100 percent hydrocarbon removal efficiency for the air stripper. The quantification of TPH and benzene emissions in included in Table 2. The calculation methodology is included in Exhibit A. As shown in Table 2, the TPH and benzene emission rates are well below the discharge limits specified in the Authority to Construct permit. Hence, we request you to issue a Permit to Operate for the packed column air stripper at the site. RenortinR Procedures Monthly reports will be submitted to the Kern County Air Pollution Control District from September 1989: The reports will include results of monthly sampling of the air stripper influent for fuel fingerprint analysis, quantification of the TPH and benzene emission rates, and operational data for the treatment system. TABLE 1 Water Chemistry Results in Parts Per Million (First Month of Operation of Water Treatment System) Sample Point Date Benzene Influent 06/29/89 0.029 Influent 07/06/89 0.028 Influent 07/06/89 0.034 (dup) Influent 07/13/89 0.043 Influent 07/13/89 0.045 (dup) Ethyl- Toluene benzene Xylene~ EDCa JSDBb TPHd TLe 0.27 0.13 0.74 ND~ ND ND 1.6 0.016 0.29 0.12 0.82 ND ND ND 3.1 0.006 0.32 0.097 0.67 ND ND ND 3.3 NAa 0.37 0.15 0.89 ND ND ND 2.6 <0.005 0.32 0.16 0.89 ND ND ND 2.5 NA Effluent 06/29/89 ND Effluent 07/06/89 ND Effluent 07/13/89 ND a 1,2-dichloroethane. bEthylene dibromide. CCarbon tetrachloride. 6I'otal petroleum hydrocarbons. eTotal lead. fNot detected. 9Not analyzed. ND ND ND ND ND ND ~0.1 NA ND ND ND ND ND ND <0.05 ND ND ND ND ND ND <0.05 NA NA TABLE 2 TPH and Benzene Emission Rates from Air Stripper (First Month of Operation of Water Treatment System) Da~ 06/29/89 07/06/89 07/13/89 aTotal petroleum hydrocarbons. TPHa (lbs/day) 0.6 1.2 1.0 Benzene (lbs/day) 0.01 0.01 0.02 Mr. Steve Beyn Page 3 August 10, 1989 Please call me if you have any questions regarding this matter. Thank you for your assistance. Sincerely, DELTA ENVIRONMENTAL CONSULTANTS, INC. Sudhakar Talanki Project Engineer ST:mjd/re Enclosures ' cc/enc: Mr. Bill Davies, Davies Oil Company Mr. Jong Han, Central Valley Regional Water Quality Control Board Ms. Amy Green, Kern County Department of Environmental Health KERN COUNTY Ale POLLUTION CONTROL A UTHORITY TO CONSTR UCT 2700 "M" Street. Suite 275 Bc~erefielcl, California 93501 Telephone: (805) 861-3682 ISSUE DATE: January 12, 1989 APPLICATION NO. 016100! EXPIRATION DATE: January ]2, 1991 DATE: Septembez' 13, :[988 AUTHORITY TO CONSTRUCT IS HEREBY GRANTED TO: DAVIES 0[[, COMPANY In the event on AUTHCRJTY TO C~NSTRUCT ie reissued to a new owner, any emissions increase aeelgned to this equipment durlng the initial Nmu Source Review Procesa remains with the initlol bearer of this doct~-ne n t. AUTHORITY TO CONSTRUCT IS HEREBY GRANTED FOR: Contaminated Gt-ound~eater £xtraction and ?z-eatment S.vstem (See attached sheets for eouipment description and conditions) $ 11 T R 29S 27E Lo¢ction: 3305 1/2 Gulf St..Bakersfle]d Start-up Inspection Dote: Upon completion of construction and/or installation, please telephone the Manager of Engineering Eval- uation. This doc~nent serves as a TEbI=ORARY Permit to Operate only os provided by Rule 201 of the District's Rules and Regulations. For the issuance of a Permit to Operate, Rule 208 requires that the equipment authorized by this AUTHORITY TO CONSTRUCT be installed and operated in accordance with the conditions of approval. Changes to these conditions must be made by application and must be approved before ~uch changes are made. This aoc~nent does not authorize the emission of air contcminante in excess of New Source Rev;e~ limits (Rule 2t0.1) or Regulation IV emission limits. Emission testing requirements set forth in this aac~ent m~st be satisfied before a Permit to Operate can be granted. aim Uonager of Eng;neering Evaluation Page 2 of 4 Pages 0161001 Continued ~QUIPMENT DESCRIPTION: Contaminated Groundwater Extraction and Treatment ~ystem, including the following equipment and design specifications: A. Maximum of two extraction wells with submersible hydrocarbon and water extraction pumps, B. 250 gallon recovered gasoline storage tank, C. Delta Cooling Tower S4-185-T air stripping column, 48 in. dia. x 25 ft. D. 5 hp blower with 8000 cfm capacity, E. Four 1200 Ibm liquid phase carbon absorption canisters. CONDITIONAL APPROVAL: Pursuant to Rule 209, ,conditional approval" is hereby granted. Please be aware that all conditions of approval remain In effect for life of project unless modifications are approved by District. DESIGN CONDITION: Inlet to air stripping column shall be equipped with flowrate indicator. (Rule 209) OPERATIONAL CONDITIONS: a. Groundwater flow£ate to air stripping column shall not exceed 144,000 gal/day. (Rule 210.1) b. Benzene flowrate to stripping column shall not exceed 0.30 gal/day. (Rules 210.1 & 419) c. Total hydrocarbon flowrate to stripping tower shall not exceed 12.36 gal/day. (Rule 210.1) d.. Stripping tower shall not operate longer than 3 years without an addi- tional risk assessment. (Rule 209) EMISSION SAMPLING LIMIT: (Entire Stationary Source) Hydrocarbons: 3.16 ibm/hr (Total HC) (Rule 210.1) 0.09 Ibm/hr (as Benzene) (Rule 419) COMPLIANCE TESTING REQUIREMENTS: Compliance with emission sampling limit and operational conditions b & c shall shall be demonstrated by daily sample collection and analysis. Influent san~ples shall be collected at a point upstream from the air stripping column and analyzed for benzene and total hydrocarbons. Daily record of influent hydrocarbon and benzene content, influent flowrate Lgal/day) shall be maintained and submitted to the District monthly. (Rule 108.1) p · Page 3 of 4 Pages 0161001 Continued STATE OF CALIFORNIA AIR TOXICS HOT SPOTS REQUIRENENTS: Facility shall comply with California Health and Safety Code Sections 44300 through 44384. (Rule 208.1) RULE 210.1 (NSR) ANALYSIS VALIDATION: Maximum dally emlssJon rate of hydrocarbons from this stationary source shall not exceed daily amount shown as "proposed" on attached emission profiles. Maximum average monthly emission rate of hydrocarbons from this stationary source shall not exceed number of days In month times daily amount shown as "proposed" on attached emission profiles. Average mOnthly emission rate shall be determined at end of each month by averaging previous 12 months of operation (fewer than 12 if new or seasonal source). ~ Compliance with these emission limits shall be verified by source operator (with fuel consumption data, operational data, etc.) on daily basis (maximum dally emission rate) and on monthly basis (maximum average'monthly emission rate) and written documentation made readily available to District for period of one year. RULE 210.1 (,NSR) SPECIFIC LIMITING CONDITIONS: (See attached emission prof'i]es). ~ E~ss£on Hyd roc arbons Lbm/Day vs. Days/Year Lbm/Day PTopcsed Pr.o£i!e -' ~F. 75' ,,~'1'ATE OF CALIFORNIA GEORGE DEUKMEJ AN, Governor CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD-- CENT L VALL REGION SAN JOAOUIN WATERSHED BRANCH OFFICE: 3614 EAST ASHLAN AVENUE FRESNOoCALIFORNIA 93726 PHONE: (209) 445-5116 13 March 1989 CERTIFIED MAIL #P 768399 095 Mr. Mike Westerheim Delta Environmental Consultants 11030 White Rock Road, Suite 110 Rancho Cordova, CA 95670 TRANSMITTAL OF ADOPTED WASTE DISCHARGE REQUIREMENTS FOR DAVIES OIL COMPANY~ GROUND WATER CLEANUP PROJECT, BAKERSFIELD, KERN COUNTY Enclosed is an official copy of Order No. 89-025 as adopted by the California Regional Water Quality Control Board, Central Valley Region, at its 24 February 1989 meeting. F. SCOTT NEVINS Senior Engineer KAW:bro Encl'osures: Adopted Order 'Standard Provisions (Discharger only) cc: Department of Health Services, Sanitary Engineering Branch, Fresno Department of Fish and Game, Region IV, Fresno Department of Water Resources, San Joaquin District, Fresno Office of Chief Counsel, State Water Resources Control Board, Sacramento Mr. Archie Matthews, Division of Water Quality, State Water Resources Control Board, Sacramento Kern County Health Department' Kern County Planning Department Mr. Steve Powell, Kern County Air Pollution, Bakersfield CALIFOkl REGIONAL WATER QUALITY CON.k OARD CENTRAL VALLEY REGION ORDER NO. ~ WASTE DISCHARGE REQUIREMENTS FOR DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (hereafter Board) finds that: Davies Oil Company (hereafter Discharger) submitted a Report of Waste Discharge, dated 11 July 1988, and a site evaluation report, dated 10 June 1988 for a ground water cleanup project at the subject facility. Treated effluent from the'project will be discharged on site.. 2. The project site is in a commercial/industrial area at 3305-1/2 Gulf Street, Bakersfield, in Section 23, T29S, R27E, NDB&M. A geotechnical investigation of the site has been conducted by Delta Environmental Consultants, Inc. The investigat.ion has concluded that ground water has been contaminated by gasoline and diesel fuels from leaking dispensing lines and/or tanks. The primary source of contamina- tion was a dispensing line which leaked approximately 2,500 gallons of regular grade gasoline prior to discovery in 1986. The lateral and vertical boundaries of the contamination have not been determined. Regional Board staff has requested the Discharger to continue efforts to define the contaminant boundaries and to modify the ground water extraction and treatment system as necessary to ensure that the contaminant plume will be completely captured and contained. 5. Ground water occurs approximately 18 feet below grade at the site. 6. The Discharger proposes to construct one or more extraction wells to recover and contain floating product and dissolved product in the ground water. The Discharger proposes to discharge an estimated 0.144 million gallons per day from the treatment system to an on-site infiltration gallery on a continuous basis for 3 to'5 years. Removal of contaminants from the ground water will be accomplished using a two-stage treatment system; packed column air stripping followed by liquid phase carbon filtration. Effluent leaving the carbon filters will be discharged to an infiltration gallery on site and returned to the ground water via infiltration. WASTE DISCHARGE REOUIREMENTS DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY -2- 10. 11. 12. 13. The beneficial uses of the qround water are municipal, industrial, and aqricultural supply. The Board, on 25 .July 1975, adopted a Water Ouality Control Plan for' tile Tulare Lake Basin (5D) which contains water Quality ob.iectives. These requirements are consistent with that Plan. This is an emerqency pro~ect and the action to adopt waste discharqe requirements for this facility is exempt from the provisions of the California Environmental Ouality Act, in accordance with Section 15269, Title 14, California Code of Requlations.. The Board has notified the DischarQer and interested aqencies and berson of its intent to prescribe waste discharqe requirements for this discharqe. The Board, in a public meetinq, heard and considered all COnTnents pertain- inq to the discharqe. IT IS HEREBY ORDERED that Davies Oil Company (W. C. Davies, owner), in order to meet the provisions contained in Division 7 of the California Water Code and requlations adopted thereunder, shall comply with the followinq: A. Discharqe Prohibitions: 1. The direct discharqe of wastes to surface waters or surface water drainaqe courses is prohibited. 2. The by-pass or overflow of untreated or partially treated waste is prohibited. B. Dlscharqe Speciflcatl6ns: The discharqe of wastewater to the infiltration qallery is prohibited, unless it can be demonstrated that the discharqe will not adversely affect the miqration of the plume of qround water contamination. 2. Neither the treatment nor the discharqe shall cause a pollution or nuisance as defined by the California Water Code, Section 13050. 3. The discharqe shall not cause deqradation of any water supply. 4. The discharqe shall remain within tile desiqnated disposal area at all times. 5. The 30-da.¥ averaqe daily dry weather discharqe flow shall not exceed 0.144 million qallons. WASTE DISCHARGE REOUIRENENTS DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY -3- 6. The discharqe of an effluent In excess of the followlnq limits prohi bi ted: Const i tuents Uni ts Daily Maximum Benzene Toluene X.vlene Ethylene Dibromide Ethyl Benzene 1,2-Dichloroethane Carbon Tetrachloride Total Lead ..... uq/1 0.68 uq/1 5.0 uq/1 5.0 uq/1 Limit of Detection uq/1 5.0 uq/1 0.95 uq/1., O. 3 uq/1 .., 50 C. Provisions: The Discharqer shall accomplish the followinq tasks accordinq Lo the indicated schedule. All work shall be conducted under the direct ,supervision of a California Reqistered Civil Enqineer or Enqineerinq Geoloqist and shall be subject to the approval of the Executive Officer. Prior to 1 Narch 1989, submit a work plan (technical report) and time schedule for determininq the lateral and vertical extent of contamination and for evaluatinq any possible effects of the infiltration qallery on plume miqration. 'b. Conduct the work and submit a report which describes the work that was accomplished in accordance with the work plan and time schedule approved under No. 1 above. Prior to 1 January 1990, submit a work plan (technical reoort) and a time schedule for removal of petroleum constituents from the ~round water at the site. d. Remove petroleum constituents in accordance with the approved work plan and time schedule. The Discharqer shall comply with the attached Monitorinq and Reportinq Proqram No. 89-025. The Discharqer shall comply with the Standard Provisions and Reportinq ReQuirements, dated 1 September 1985, which are a part of this Order. 4. The Discharqer shall report promptly to the Board any material chanqe or proposed'chanqe in the character, locations, or volume of the discharqe. ;;ASTE DISC/lARGE REQUIREP.)ENTS DAVIES OIL COMPANY GROUND ~ATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY -4- In the event of any change in control or ownership of land or waste discharge facilities presently owned or controlled by the Discharger, t~e Discharger shall notify the succeeding owner or operator of the existence of. this Order by letter, a copy of which shall be forwarded to this office. The Board will review this Order perioJically and may revise require- ments when necessary. I, WILLIAM )). CROOKS, Executive Officer, do hereby certify the foregoing is a full, true, and correct copy of an Order adopted by the California Regional Water Quality Control Board, Central Valley Region, on ?~ Eebr,J~ry IQRQ · WILLI~4 II. CROOKS, Executive 'Officer KAW:bro:2/24/89 AMENDED Attachments CA L I Ft, REGIONAL WATER QUALITY CON!'..~BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. 89-025 FOR DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY Sampling and analytical procedures shall be in accordance with the Environmental Protection Agency's recommended procedures. A complete list of all substances which are tested for and reported on by the testing laboratory shall be provided to the Regional Board. Detection limits shall equal oc be more precise than~ effluent constituent limits included in the adopted waste discharge requirements~ Chain-of-custody forms shall be completed for each sample collected and copies provided to the Regional Board with monthly reports. INFLUENT ~NITORING Influent samples shall be collected at a point upstream from the air stripping tower. The following shall constitute the influent monitoring program: Sampling Constituent Units ~¥pe of Sample Frequency Benzene ug/1 Grab Quarterly Toluene ug/1 Grab Quarterly Xylene ug/1 Grab Quarterly Ethylene Dibromide ug/1 Grab Quarterly 1,2-Dichloroethane ug/t Grab Quarterly Carbon Tetrachloride ug/1 Grab Quarterly Total Lead ug/1 ~ Grab Quarterly EFFLUENT FE)NITORING A monitoring program that monitors the performance of the air stripping/carbon adsorption treatment system and compliance with the adopted waste discharge requirements shall be implemented. Effluent samples shall be collected from the discharge following the final treatment unit. The following shall constitute the effluent monitoring program: MONITORING AND REPORTING PROGRAM DAVIES OIt COMPANY GROUND WATER'CLEANUP PROJECT BAKERSFIELD, KERN COUNTY -2- Constituent Units Type of Sample Benzene ug/1 Grab Toluene u§/1 Grab Xylene ug/1 Grab Ethylene Dibromide ug/1 Grab 1,2-Dichlor°ethane ug/1 Grab Carbon Tetrachloride ug/1 Grab Total Lead ug/1 Grab Sampling Frequency Weekly Weekly Weekly Weekly Weekly Weekly Monthly 1/ Samples are to be collected and analyzed weekly until the ability of the treatment system to comply with the adopted waste discharge requirements is established. Thereafter, samples shall be collected and analyzed in accordance with Items a and b below: Within four weeks of the adoption date of these requirements, the Discharger shall provide the Board with a proposed program for determining the breakthrough point of the carbon filter and a means of providing compliance with the adopted waste discharge requirements during the period when the breakthrough point is approached. The program shall include the following; proposed monitoring program, including frequency 'of monitoring, for determining the breakthrough point. 2} The rationale for ~1) above that incorporates system design, constituent concentrations, loading rates, and estimated breakthrough period. Within two weeks of the first regeneration or replacement of the carbon filtration treatment unit, the Discharger shall submit an engineering report that includes the breakthrough curve showing organic constituent effluent concentrations as a function of through put volume, any proposed revisions in monitoring frequencies based on the constructed curve, and the rationale for the proposed revisions. MONITORING AND REPORTING PROGRAM DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY -3- GROUND WATER ~NITORING The Discharqer shall implement a qround water monitorinq proqram to measure the effectiveness of the cleanup proqrm~). The wells previously constructed durlnq the site contamination assessment shall be included as a minimum in the monitor- inq network. All wells in the network shall be.sampled semi-annuall.v. Ground water eleva- tions shall also be measured and recorded semi-annually. A report shall be prepared and submitted semi-annually which described and surmlarizes tl~e e×istinq site conditions. .The report shall be prepared by a licensed professional enqineer or enq~neerinq qeoloqist. The samples shall be analyzed for the followinq parameters: Samplinq Constituent Units T~pe of Sample Freouency Benzene uq/1 Grab Toluene uq/1 Grab Xylene uq/1 Grab Ethylene Dibromide uq/1 Grab 1,2-Dichloroethane uq/1 Grab Carbon Tetrachloride uq/1 Grab Total Lead uq/1 Grab Semi-annually Semi-annually Semi-annually Seml-annuall.¥ Semi-annually Semi-annually Semi-annually REPORTING In reportinq the monitorinq data, the Discharqer ~hall arranqe the data in tabular form so that the date, the constituents, and the concentrations are readily discernible. The data shall be sun~narized in such a manner to illus- trate clearl.v the compliance with waste discharqe requirements. Influent and effluent monltorinq reports shall be submitted to the Reqional Board b.¥ the 15th d~v of the followinq month. Ground water monitorinq reports shall be submitted to the Reqional Board semi-annually, by I July and I January of each year. MONITORING AND REPORTING PROGRAM DAVIES OIL COMPANY GROUND WATER CLEANUP' PROJECT BAKERSFIELD, KERN COUNTY -4- The results of any monitorinq done more freouently than reouired at the loca- tions s~eclfled tn the Monltor~nq and Reportinq Proqram shall be reported to the Board. Upon written reouest of the Board, the Dlscharqer shall, submit a report to the Board bv 30 January of each year. The reDo'rt shall contain both tabular and qraph~cal su~mlar'tes of the mon~torinq data obtained durinq the previous'year. In addition, the Discharqer shall discuss the comDliance record and the corrective actions taken or planned whtct~ may be needed to brlnq the discharqe into full compliance with the waste discharqe reouirements. The Dischar'qer shall implement the above monitorinq Droqram on the effective date of this Order. WILLIAM H. CROOKS, Executive Officer KAW:bro 12Z12/88 24 February 1989 (Date) INFOR~.~?ION SHEET DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY On 11 July 1988 Davies Oil Company submitted an application for waste discharqe requirements for a proposed qround water cleanup project. Underqround qasollne and/or diesel leaks at the facility have resulted in qround water pollution. The facility is in a commercial/industrial area in Bakersfield in Section 23, T29S, R27E, MD&BM. Ground water' will be removed by one or more extraction wells and routed to the treatment system.. The treatment system will consist of an air stripper followed. by liquid phase carbon filters. The treatment system has been deslqned to accOmmodate a peak flow of 100 qpm (0.144 mqd) and has the capacity to chlori- nate effluent to control bacterial qrowth in an on-site infiltration qallery. Final effluent will be discharqed to the infiltration qaller.vwhich has also been desiqned to accommodate the treatment system peak flow of 100 qpm. The infiltration qallery is to be constructed approximately 300 f~et upqraUient of the known leak location. The lateral and vertical boundaries of the contamination have not been deter- mined. As a provision to this Order. Davies will be required to conduct investiqations to define the contaminant boundaries and submit a report sun~na-~. rizlnq, the findinqs of the investiqattons. Davies will also be required to accomplish sufficient work to evaluate the potential for the infiltratioh' qallery to exacerbate plume miqration. Appropriate modifications of the qround water treatment and extraction system will be required (e.q., installation of additional recoveK¥ wells') to ensure cleanup of the plume of contamination. Ground water is encountered approximately 18 feet below qrade. The soil profile at the site consists primarily of coarse sands and small qravel." Soils contain- inq fine qralned particles (silts) are qenerally encountered in the upper soil profile, less than 7 feet below land surface. Litholoqic descriptions do not indicate the pressure of any potential confininq lavers within 30 feet below' land surface. The beneficial uses of the qround water in the area are municipal, doemstlc, industrial, and aqricultural supply. The Quality of the qround water is excellent with electrical conductance, typically ranqinq between 200 and 500 umhos/cm. Effluent limitations were established to protect the beneficial uses of qround water. The effluent limitations reflec't the U. S. Environmental Protection Aqency's one-in-a-million incremental cancer risk level for Benzene (0.68 uq/1), Ethylene Dibromide (limit of detection). 1,2-Dichloroethane (0.95 uq/1), and Lead (50 uq/1). The planned treatment scheme (air strippinq and carbon adsorp- tion) is the best available techoloqy (SAT) economically achievable for removinq volatile orqanic constituents. The effluent limits set for Toluene (5.0 uq/1), Xylene (5.0 uq/1), and Ethyl Benzene (5.0 uq/1) reflect achievable levels of treatme'nt utllizinq the best available technology, as proposed. INFORMATION SHEET - continued DAVIES OIL COMPANY GROUND WATER CLEANUP PROJECT BAKERSFIELD, KERN COUNTY -2- This is an emerqenc.v pro.lect and the action to adopt waste disCharqe reQuire- ments for this existlnq facility is exempt from the provisions of the California Environmental Qualit.v Act in accordance with Section 15269, Title 14, California Code of Requlations. KAW: b ro 12/12/88 .; ~ · ' k~ ' '~ ' ~ I I I } " 'x [:.. .-' . : ,--~-, -::- ~ ~~~"---X.~ ........ z4~- - , ' .... ~'~ ~ "%"' '~'~'~l '~ ~-~ ~ -., I ~~- ~k~ . I '%_C Lk ~ ~, ,~. --. .. ---- . -- ~ . .. ~ I .~/~ "7~ '- .. ~ ~..- ~ 4 ;~~ - / ~ '~-~ ~"~- ~"-~% . ~ -' ~~5'-- ~% t~ ~ .... . ~+'~// ~ ~ ,~.~, ~ ~.-~, ..... ~ .~ / · .ff~,/ /~ ~ - - ,' - 4 .2 .;.~ ,- l:, ~ ~ . .~, .. Fl... : · /,0 .. . ..- .o.~ I ~ ~ - ., . . , , , ,~ . -. ~ .... , ~- ~1/~ ... .'"~5 ~,.-.. ~.~-..-~' ·z..r. '~-:' . ' i , . r~'~ I%_ i:":,~- · -- . - ..-,.; .- - .-: · ~ I I ~ ~o '~'* · * .~ *~ *JU r-' :' / '~/ ~ ' . I I ~ [e ''W , -' o2. ' I .... !' Y ~ ' ~Y ~' A - J I ' ee '~ -! w " -~' / " '/ 7 Lo '~. i' ' I ~ ' '" ' ' ~ I / / .~'~'-~ / ~-I ,L --~ I/_ I: ,n ' / , -'~ / ;/'/~Z'NN ~:~l ~.J' I;' .".. ; i DAVIES OIL COMPANY L2] J . ' . . GROUND WATER CLEANUP PROJECT ~ :j:'~ j BAKERSFIELD,.,KERN COUNTY · i.l~"-J' ! -. ~ Section 23, T29S, R27E, MDB&M Bakersfield, 7½' USGS Quad 0 2000 ' ILDALE, CALIF. x... Scale: l" = 2000' UNITED STATES PO~TJE~SERV[C~-~ . (,~1 oP~c~, Bus~,.:~Sc~ ~', SENDER INSTRUC~ ~ Print your name/adrift, and-ZIP Code in the ~pa~ beldw. ~ * ·theC°mpletereve~.items 1, 2, 3, and. .... 4 on*. · Affach to front of a~icle if ~a~. permit, othe~i~ ;affix to back "** * . * PENAL~ FOR PRIVATE · E.do= .-i=~. ",.t"r. ,~ipt** Requ~ed" adjacent to number.~ :'. :~ Print ~d~r~ ~e~e~ ad~r~, and.ZiP C~e in the space below. RETURN, ~'** ' '.~'~. ~ .......... . . (~ ..,:,,=~'~ ~. · .:* :"':.. ,~/:~:~.::~;~::::~ 2?00 PS Form 3811, Maz. 1987 ' .':. O SENDER: Complete items I and 2 when additional services are desired, and complete Items 3 and 4. ,:' · Put your address In the "RETURN. TO" Space on the reverse side. F.~llure to do thls will prevent this card from being returned to you. The return receipt fee wi I orovlde VOU the name of the Person delivered to and the date of de Iverv. For additional fees tRI) following services are available. Consult postmaster for fees end check box(es) for. addltional.servlce(s)' requested. 1.. r'l Show to.whom .delivered, date, en_d addr~.e~See's address. 2. 1-1 Restricted Delivery · 't (Extra charge}f, :, ...; ,:' !.~..~",' ' ' t (Extra charge)t 3. Article& Addmsse,J. . . to: ,. '~.,~.':' ,. ', ',.,. ' .,'0=00'/.. :',.;L·I II 4. Article Number 'Registered [] Insured (P.o. $o° q '"'..:' nco° 5. Signature- Addressee 8. Address~l~dd~ON£[~! X requeste~,rJ~ 6. Sig~l:~re -- Agent ' 7. ,.ate of Delivery . '~r U.S.G. RO;:1987,17~268 · DOMESTIC RETURN RECEIPT STICK POSTAGE STAMPS TO ARTICLE TO COVER FIRST CLASS POSTAGE, CERTIFIED MAIL FEE, AND CHARGES FOR ANY SELECTED OPTIONAL SEFIVICES. (see front) 1. If you want this receipt postmarked st ck the gummed stub to the right of the relurn add'r e receipt attached and present the article ara post office service window or hand it to th ' ' ' (no extra charge) .- .............. 2. If you do not want this receipt postmarked, stick the gummed stub to the right of the return address of the article, date, detach and retain the receipt, and mail the article. 3. If you want a return receipt, write'the certified mail number and your name and address on a return receipt card, Form 3811, and atlach it lo the front of the article by means of the gummed ends if space per- mits. Otherwise, affix to back of article. Endorse front of article RETURN RECEIPT REQUESTED adjacent to the number. 4. If you want delivery restricted lo the addressee, or to an authorized agent of the addressee, endorse RESTRICTED DELIVERY on the front of the article. 5. Enter fees for the services requested in the appropriate spaces on the front of this receipt. If return receipt is requested, check the applicable blocks in item 1 cf Form 3811. 6. Save this receipt and present it if you make inquiry. ~- U.S.O.P.O. 1987-17S.'~31 · . · :. ? ?.' '. ! ~l~6[ eunp '00~; u~Jod Sd l 2?00 'M' Street. Ste. :300 8akersfieid, CA g3301 KERN COUNT( Environmental Health Department STATE C.O.L.T. Mr. Bill Davies W.P. Davies Oil Co. Inc. P.O. Box 800{37 Bakersfield. CA g3380 February 9, 1989 SUBJECT: Location: 3305 Gulf Street Bakersfield, CA 93308 Known As: Davies Oil Co. PERMIT #: 50072 Dear Mr. Bill Davies: This letter is an official notice to inform you that the property described above has been determined by Kern County Environmental Health to be the site of an unauthorized release of hazardous materials from an underground storage tank. This notic6 is sent to you because our records indicate that you are a responsible party for this property. As a responsible party, you must provide for all studies and work relating to the above described property and the cost for oversight of these activities. California Health and Safety Code Chapter 6.7 and Kern County Ordinance Code Chapter 8.48 require a determination of the threat to the environment as a resnlt of this release. THE RESPONSIBLE PARTY SHALL. ON A TIMELY BASIS. DEVELOP A SITE CHARACTERIZATION, FEASIBILITY STUDY AND REMEDIAL ACTION PLAN FOR KERN COUNTY ENVIRONMENTAL HEALTH'S REVIEW AND APPROVAL BEFORE THE WORK IS INITIATED. Enclosed you will find attachment "A", Handbook'UT-35, which states the minimum required site workplan activities, the necessary requirements for selecting environmental contractors qualified-to perform this work,' a glossary of terms, example illustrations, and a section discussing the answers to commonly asked questions. According to the criteria listed below and in Attachment "C". your site has been designated as environmentally sensitive. All environmentally sensitive sites are automatically enrolled into a State contract program for recovery of oversight costs. The environmental sensitivity criteria for sites are as follows: Highest historic ground water is within 100 feet of ground surface, or Nearest surface water in unlined conveyance is within 75 feet of tank(s), or DISTRICT OFFICES Oelano · Lamont * Lake IsaDella · Mojave · Ridqecrest · Shafter · Taft Nearest agricultural or domestic water ~ell is within 75 feet of tanks(s), or Facility is located in a designated aquifer recharge area. or Permitting Authority determines possible adverse environmental impact due to facility proximity to uniqne wildlife habitat areas. The cost incurred by Kern County Environmental Health for the oversight of the work for the site characterization, feasibility study, remediation action plan, site remediation, and ongoing monitoring is not covered by any fees or permits. These costs will be recovered by Kern County Environmental Health under the terms of the State contract described below. This contract ONLY pertains to costs associated with oversight. STATE CONTRACT The State Leaking Underground Storage Tank Pilot Program provides a mechanism for the State to reimburse the County for County oversight. The County will conduct the necessary oversight and bill the State Water Resources Control Board under 'this State contract. The State will then charge you, a responsible party for both the costs incurred by the County and the State pertaining to your site. Accordingly, Attachment "D", the will serve as the official notification of enrollment into the State Contract. If you should have any questions regarding this mat'ter, please contact John Nilon, contract manager, at (805) 861-3636~ Sincerely, Mary Weddell Assistant County Administrative Officer Environmental Health attachments 2?00 'M' $~reec. ~e. 300 (805) 861-3636 KERN COUNT~ Env~o~en~He~Dep~ent ATTACHMEXT "D" February 9, 1989 Mr. Bill Davies W.P. Davies Oil Co. Inc. P.O. Box 80067 Bakersfield, CA 93380 SUBJECT: Location: 3305 Gulf Street Bakersfield, CA 93308 Known As: Davies 0il Co. PERMIT ~: 50072 Dear Mr. Bill Davies: This letter will serve as 'the official notification concerning reimbursement requirements for a responsible party enrolled in the State Leaking Underground Storage Tank Pilot Program. As mentioned in the introductory letter, by either not responding to this package within ten (10) calendar days or through your own selection of the State Contract option, your site wJil be placed under the terms explained below: Whereas the Legislature has appropriated funds from the California Hazardous Substance Clean-up Fund to pay the local and state agency administrative and oversight costs associated with the cleanup of releases from underground storage.tanks: and Whereas the direct and indirect costs of overseeing removal or remedial action at the above site are funded, in whole or in part, from the Hazardous Substance Cleanup Fund: and Whereas the above individual(s) or entity(les) have been identified as the party or parties responsible for investigation and cleanup of the above site: YOU ARE HEREBY NOTIFIED that pursuant to Section 25360 of the Health and Safety code, the Above Responsible Party or Parties shall reimburse the State Water Resources Control Board for all direct and indirect costs incurred by any and all state and local agencies while overseeing the cleanup of the above underground storage tank site, and the above Responsible Party or Parties. shall make full payment of such costs within 30 (lays of receipt of a detailed invoice from the State Water Resources Control Board. If you should have any questions regarding this matter, please contacfi John Nilon, contract manager, at (805) 861-3636. Sincerely, attachments Mary Weddell Assistant County Administrative Officer Environmental Health DISTRICT OFFICES Delano · Lamon! · Lake lsat)ella · Moiave · Rido(~r....~ · ch=~,,~.. 'r=f~ MAR 0 ?. loc' -, ' Environmental Health Div. K~'n County Health Boot DAVIES OIL COMPANY · Petroleum Marketing · Cardlock Fuels · Exxon Distributor P.O. Box 80067 -- Bakersfield, California 93380 -- Phone (805) 323-6063 February 27, 1989 Kern County Environmenmtal Health Department Attn: Mary Weddell 2700 "M" Street~ Ste. 300 Bakersfield, CA 93301 Re: Pern~it # 5007R D~ar Ms. Mary Weddell: Your l~tter dated FebrUary 9, 1989~ was received in my office or~ F~bruary 21~ 1989. I assume that the t~n (10) calertdar day rt-'..=ponse criteria was an over~ight. Under that assurnption, the foilc, wir~g infort,latior, is provided: Ir, 5;.;t-ance Cc'.,mpar:y: C 1 a i ,, f,i,..m~be.r: I r,s urod: Project Contractor: Delta Project Number: Federated Insurance Cc, rapany Attn: Susan Sparks, Claims Examir~er 5620 Birdcage Street, Suite 200 Citrus Heights, CA 95610 (916) 96~-8999 Toll Free: <800) 237-1199 83Z-9, 83Z-26, 83Z-40 W. P. Davies Oil Compar, y Delta Er, viror, rner, tal Cc. nsultarfts, Inc. 40-87-326 Our locaI representative for Federated Insurance Company is Mt-. Steven J. Rea, P. 0. Box 10956, Bakersfield, CA 93309. He car, be reached at (805) 835-94~0. If I can be of further assistance, pl =,- ....... · ..... " Sincerely, /.! ,'~ ''?jbnald c. Kile~er¢ I I mar, ager ,:,F Finarlce Mt-. Steven Rea Ms. Eusar, Sparks 2700 'H' Street, Ste. 300 Hakersfield, CA 93301 (805) 861-3535 HAZARDOUS MATERIALS MANAGEMENT PROGRAM MONITORING WELL(S) PERMIT KERN COUNTY Env~o~en~He~Se~tcesDepartment 'MW# 0099-5 MW# 0100-5 MW# 0101-5 MW# 0102-5 OWNER'S NAME: FACILITY NAME: Davies Oil Company FACILITY LOCATION: 3305 1/2 Gulf St., DRILLING METHOD: Hollow Stem Auger CONTRACTOR: West Hazmat Drilling Co. TYPE OF MONITORING WELL(S) Ground Water NUMBER OF WELLS REQUIRED TO MONITOR FACILITY: Bakersfield, CA LICENSE #: Four DATE: 2-27-89 C57-559979 GENERAL CONDITIONS'OF THIS PERMIT: 1. Well site approval is required before beginnin9 any work related to well construction. It is unlawful to continue work past the stage at which an inspection is required unless inspection is waived or.completed. 2. Other required inspections include: conductor casing, all annular seals, and final construction features. 3. A phone call to the Department office is required on the morning of the day that'work is to commence and 24 hours before the placement of any sea]s or p]ugs. 4. Construction under this Permit is subject to any instructions by Department representatives. 5. Any misrepresentation or non-compliance with required Permit Conditions, or Ordinance will result in issuance of a 'STOP WORK ORDER. 6. A copy of the Department of Water Resources Driller's Report as yell as 9pries of logs and water quality analyses must be submitted to the Health Department within 14 days after completion of the work. ?. A well destruction application must be files with this Department if a well is being destroyed that is not in conjunction with a test hole permit. 8. The permit is voidon the ninetieth (gO} calendar day after date if issuance if work has not been started and reasonable progress toward completion made. Fees are not refundable nor transferable. g. I have read and agree to comply with the General Conditions noted above. SPECIAL CONDITIONS: 1. Approved Annular Seal Depth 7.5 feet 2. All wells completed with schedule 40 PVC screens in contaminated environments, must be destroyed after February 27, 1991. {If no, provided an exemption by the Environmental Health Department). This permit must be signed by either the contractor or owner OI'/NER'5 3IGNAIUR£ DAJE ~ ,~ CONIRACIOX'~ 5IGNAIURE AEC: cd ( green~davies, mwp ) DAlE / KERN COUNTY PLANNING & DEVELOPMENT ~00 M · e u, ~ ~301 (805) 86'1-2615 Type o'f' Or'de~" DEu.~ EN'¢IRONM~ ,~ONITOR[NG WELL TANK I?0B .DAVIS OIL SITE Sh'fp Oa~e 02/27/S9 Quan~:"i ';;:.y P!"'~ce ',Jn"i ~ Disc 4 3'''~,: :: .00 E N ? To~a] Arnoul~C Due Payrnenc Made By Check 2rid P,.B~'rrlet"~E Made 8y ,., ,~,~k 1340.00 335.00 ern' Cbunty Health Department Pecmit ivision o£ Environmental Healj Application ~ - 700 Flower Street, Bakersfield, CA 93305 APPLICATION FOR PERMIT TO OPERATE uNDErGROUND HAZARDOUS SUBSTANCES STORAGE FACILITY Type_ of Application (check): [-]New Facility ~]Modification of Facility ~]Existing Facility ~]Transfer of Owner~i~ Emergency 24-Hour Contact (name, area code, phone): Days Is T~k(s] ~cat~ on ~ ~ricultural Faro? ~Y~ ~ Is Tank(s) Us~ ~rily for ~ricultural ~r~ses? ~Yes T R 'S~ (R~I ~atio~ ~ly) · ~ater to Facility Provided by ~rY' Soil Characteristics' at Facility Basis for Soil Type and Grour~water Depth De~erminatf~{s Depth ~' Groundwater Contractor Address Proposed -St~art'ih~3 Date .... Worker' s Ccmpensatic~ Certification ! If This Permit Is For Modification Of An Existing Facility, Propoaed Briefly ~ribe ~xltficati~s Tank(a) Store (check all that apgly)= Tank ! Waste Product Motor Vehicle ----~el ,/ [] Et IN.. '';z. E! g B Unleaded Regular Premzum Diesal Waste Chenical Ccmposi, tion of Materials Stored (not necesaary for motor vehicle fuals) ~.~ank .#, C,,hamlca!,~,,,S~ored. (non-coamarcial name~.CAS ! (if kncam)_ Chamical[ Transfer of Ownership rote ~ff '~--anafer Previous Facility 'N~ modify or Previous Owner facility upon receivirg this completed fora. This :om has be_~en c~.p~;~ under ~enalty of true and cO;~eCt~ ~/~/// // perjury and to the best of my knowledge is accept fUlly 'all'" obliga't'ions of Pemit NO: ...... i's'sued to · I understand that the Pemitttng Authority may review ard ter~inate th~ transfer of the Permit to Operate this ~F~]erground storage April I0, 198~ Kern County !lealth Department 1700 Flower aakersfield, California 93305 Attn: ~ ,.s. Anne Boyce Subj: Proposed HydrogeoloKic Investigation Davies Oil Company Bakersfield, California TCT ~4231 86-183 Claim #21-83Z-9 I::LUln C11::¥ I:esl::ln(:l COrl~oratlon 662 CROMWELL AVENUE ST PAUL, MN 55114 PHONE 612/645-3601 Dear bls. Boyce: 1.0 Introduction In response to a suspected gaso].ine loss, Twin City Testing Corporation (TCT) is transmitting to you a description of the proposed investigative work to be completed at Davies Oil Company, 3305 1/2 Gulf Street, Bakersfield, California. 2.0 Objective The objective of tile hydrogeologic investiaation is to define the horizontal and vertical extent of gasoline contamination that may have resulted from the uncontrolled release of gasoline. The proposed investigation will address the potential environmental impact that the loss may impose on the surrounding biotic and abiotic community. The investigation will qualify and quantify gasoline contaminated soils and provide information regarding the areal extent of free gasoline and dissolved gasoline components. 3.0 Background Information Based on inventory reconciliation, Davies Oil Company detected a losing trend in the regular system during the winter months of 1985. In response to this trend, Davies Oil Company pressure tested the tanks and lines. The results of these tests indicated leakage of the yegular .grade dispensing il. ne. Subsequently, this line was repaired. Shortly thereafter, inventory reconciliation again indicated product losses. On ~larch 3, 1986, the tanks and lines were again tested, and a leak was detected in the vapor lines. Repair was completed on this line and the Kern County Health Department (KCHD) was notified of the loss. Davies Oil Company estimates that 2500 gallons of regular gasoline may have been .lost at this site. AN EQUAL OPPORTUNITY EMPLOYER KERN COUNTY HEALTH DEPL DIVIS!ON OF ENVIRONMENTAL HE,~4~4:'t 1700 FLOWER ST., BAKERSFIELD, TE/EPJ~: (805)861-3636 CONSTRUCT, RECON,S~UCT, DEEPEN OR DESTROY A WELL!ii, PERMiT NO.__g.5'cc, 7~ May 21, 1986 APPLICATION DATE June 10, 1986 PROPOSED STARTING DATE June 13, 1986 * PROPOSED COMPLETION DATE JOB ADDRESS~;LOCATION' "T ......... 2 Ss']' ']"'~'"'.]]~.?E]..]~E" ] ]" ']'].. 40 AcRe"suB ...3.305½...G..U. !. t~. s tree~c, ...B..a..k.~r s f~i.e ]..O..;._....C.~. ................................................ : ................................................................. ...................... ~.~~..~~.~~``.~~~.~~].~]~]].~]]~~~]]~]]]~.~~~]~~]~~~]]~~]].~]`~.]..]~`~~~.~~]~~~~~~~~~~.~.~~.~]]]]]]] OWNER'S NAME ... D.avJ.es .0i ! ............................ .BakeEsf] el d, CA ADDRESS .~.0~.{ ..Girl! ~......~.~.~.~t. ............................... TELEPHONE 805-323-6063 CONTRACTOR ..... Layne...Western .................... LICENSE NO. ~',2 ADDRESS .?.,.0,. BOX 3~'J6 .... Bake~s.f~e.] d,. CA TELEPHONE 805-324-~6026 NE .,¼ .......................... NEW WELL X TYPE'OF WORK (CHECK) ............................................................. P R'6 P(~'i~D'"~i~i]]6~:~ .......................... INTENDED USE (CHECK) RECONSTRUCTION DOMESTIC/PRIVATE DOMESTIC/PUBLIC AGRICULTURAL INDUSTRIAL ; CATHODIC TEST HOLE " OTHER .-mon.itor4ng.--wel 1 MAX ..... 5 5 ......FEET MI N ......... 3.5_..._.FEET PENETRATES CORCORAN CLAY (CHECK) YES :" NO X GRAVEL PACK (CHECK) YES X. NO '.'] DEEPEN DESTRUCTION ........ ~:~ H'C~'i~'"6'F" ~C~N sTR~'CT'i'0N "i'C H E~'~'i' ........ ROTARY X DUG '' DRILLED- Hollow stem BORED .. .......................... ~.A,.~ .L.E..'~9?.L DRIVEN .. PROPOSED CASING Sch', 40 DIAMETER ~! .............. GAUGE/WALL ........... TYPE PVC- DEPTH SEALING MATERIAL (CHECK) NEAT CEMENT .X.]~. PUDDLED CLAY , screen bott~ FROM .2. ......... ~.b0ve_TO ...................... CEMENT GROUT OTHER FROM .................................. TO ...... z ..................... FEET CONCRETE '.'.~]; ................................................................................................................................... : .................... ii~'S~'i~'O'i~i"~'~i~'Cii'i~iFb- ................... i'~'~'~'E~:l~6 ..... '~'6'[b-~'6'"'P I~ R i~'6'~'~'~-i-6'~'"~'~'"~E~'J~'~-N- ..... PROPOSED SEAL(S)/PLUG(S) (HEALTH ~HECK) SURFACE > Concrete ~,..--~ BY ~ BY ]~'~]..~. FROM ............................... TO FEET OTHER '. .................................... ' ........................... ROM 0 TO .......... ..-_.,.5 ...... FEET .._C....O!!.C...r_...e.t..._e FROM ................................ TO .......................... FEET .......................... FROM ...... '....TO ...................... ~ FEET FROM TO ........................ FEET FROM .... TO ................. FEET FROM'~"~..-.-.]] ,_TO ']] FEET FROM ..................... TO FEET ........................... ?~ BY ......................... 5' above water table to 10' DESTRUCTION OF WELL bel ow CASING DIAMETER .................................... APPROX. DEPTH .............................. PENETRATES CORCORAN CLAY ................................................................................ DESCRIBE MATERIALS AND PROCEDURES ....................................................................................................................................................................................................... SUBMITTED BY ' AS AGENT FOR ......................................................................................................................... ACCESS APPROVAL DISPOSITION OF APPLICATION : FLOOD PLAIN' ZONING APPROVAL (FOR OFFICIAL USE ONLY) ZONING HEALTH~PARTMENT ZONE /Vi .'~..-- 1 APPROVED ................ D SAPPROVED .................. APPROVED SUBJECT TO CONDITIONS REPORT REASON(S)F01~ OENI,~,OR NECESS~'~'CO~'~,I~N$,H[RE: ..... ........ ................ ....... B Y~. ~~-.DATE ....... ~~..._,~,~' .. ......... APPROVED ................... :.., DISAPPROVED ....................... APPROVED SUBJECT TO CONDITIONS REPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE: ELECTRIC LOG REQUIRED YES NO / BY ............. y DATE ..................................... .............................. CASH ....... BANK # PERMIT EXPIRES ON NINETIETH (90) DAY AFTER DATE OF ISSUANCE IF WORK HAS NOT BEEN STARTED. KCHD//306 EH (9/78) SKETCH WELL LOCATION ON REVERSE SIDE 1700 Flower Street BakerafleM, CaWomla 93305 Telephone (805) 861-3836 COUNTY HEALTH DEPAI ENVIRONMENTAL HEALTH DWISlON PERMIT FOR TFJ4PORARY OR PERNANENT CLOSURE/ABANDONMENT OF UNDERGROUND HAZARDOUS SUBSTANCES STORAGE FACILITY HEALTH OFFICER Leon M Hebe~aofl, M.D. DIRECTOR OF ENVIRONMENTAL HEALTH Vernon S. Relchard PERMIT NUNBER A267-05 FACILITY N.M4E/ADDRESS: OWNER(S) NA~E/ADDRESS: CONTRACTOR: Davies 0il 3305 Gulf Street Bakersfield, CA Davies Oil Company 3305 Gulf Street Bakersfield, CA 93307 Whttten Construction 7217 Durango Way Bakersfield, CA 93309 License No. 459097 PERMIT TO ABANDON 3 TANKS AT ABOVE LOCATION. .PERMIT EXPIRES APPROVAL DATE APPROVED BY October 3, .1987 ..................... POST ON PREMISES ..................... CONDITIONS AS FOLLOWS: 1. Permittee must obtain a Fire Department permit prior to initiating abandonment action. 2. All procedures used must be in accordance with requirements of Standards and Guidelines developed for implementation of Kern County .Ordinance Code. 3. A minimum of four samples must be retrieved beneath each tank at depths of approximately two feet and six feet, one-third from each end. 4. ..All samples must be analyzed, for benzene and total petroleum hydrocarbons. 5. Advise this office of the time and date'of proposed sampling with 24 hours advance notice. ACCEPTED BY DATE DISTRICT OFFICES akersfield onstruction nspection 'Laboratory No. P86-0148 Date Reported: 10-24-86 County of Kern Health Department Environmental Health Services 1700 Flower Street Bakersfield, CA 93305 Attention: Mr. Richard Casagrande Subject: Soils Report and Logs for the removal of three (3) Diesel Tanks at Davies Oil Co. on Gulf Street, Bakersfield, CA. Gentlemen: Submitted herewith are the soil contamination test results and loggings we performed on the removal of three (3) 10,000 Gallon Diesel Tanks at Davies Oil Company on Gulf Street, Bakersfield, CA. Ail samples for contamination were taken at depths of 2'-0" and 6'-0" below the bottom of the tanks. Each sample was put in a glass container and taken to Stan Comer, Chemist/Consultant for testing. As shown on the test results, the soil under each tank contains some contam- ination. The water table in this area is approximately 50' according to the Kern County Water Agency, 1984 Water Supply Report. The soil logs, a drawing showing the tank locations and test results for con- Lawre~c& L. Wismer ~hn H. Hansen' ]E 26544 3012 Antoni,o Ave.. Bakersfield. Ca. 93308 / (805) 324-1 FLUSH GRAOE MANHOLE MONITORING WELL CONSTRUCTII~)0~TAILS GmunU FJeva[ior~ ........................ To13 Of Riser ~ l~evaae~c ........................ Static Water Level: ........................ Installation Comeleted: : ' CONCRETE PROl~-CllV~ MANHOLE COVL~I - TYP~ - 01AME'TER AND MATERIAL - WATER TIGHT (YES/NO] ° Si~-C3AL KEYS OR LOC3(S REQUIRED RE~ER PIPE ' '- - DIAMETER AND, MATERIAL - -TYPE OF' GROUT AROUND RISER - TYPE. OF I~NTONITE .. - BENTONITE ,SEAL ~. FILTER PAC~ -. · - DI,S'rANCE OF FILTER SAND ABOVE. TOP OF SCREEN - TYPE OF' FILTER AROUND SCREEN - SCREEN MATERIAL --SC_~EEN GAUGE OR SlOT SIZE OF OPEN.OS - DIAMETER AND LENGTH OF SCREEN L I. OI~.TH TO 8OTTOM OF MONITORING WELL FROM TOP OF RISER PIPE TOTAL,BORING ~I~PTH OIAMETER OF BORE HOLI~ DRILI~IN.G M~THOI~ COMPLETED aY: .............................. REVIEWED BY: ' TOTAL WELL OEPTH BELOW TOP OF RISER PIPE = . ............. FT ADelta Environmental Consultants, Inc. Nortt~ ) LOFFICE OF~CE PUMP ISLANDS / 1o0ooo MW-3 STORAGE ~ P~IK LEGEND:. ~ MW-1 ~ RW-1 MONITORING WELL LOCATION DRY WELL RECOVERY WELL LOCATION 0 IOOFT ': JOB NO. Delt& Environmental Consultants, Inc. SITE VICINITY MAP DAVIES OIL ~ETTY STREET -is GULF STREET RUSH SWOAPE PROPERTES ~KW~H NO. 87 ABANDONED PFIIVATE ~ KEN CUMMINGS DIESEL RUSH SWOAPE PROPERTIES OPEN LOT TRUCK PARKING KERNVILLE STAGE AND FREIGHT MW.-9 BUILDING ANDRE FAMILY RENTALS OWNER: CYRIL ANDRE JIM'S STEEL AND SUPPLY OWNER~ FRANCIS PERRY STEEL PIPE STORAGE HAZArdOUS MATERiAlS el=IN COUNTY HEALTH OEPARTM~ INYINONMINT&L. Ht~J.TH 01VlelO# M.D. OIR~CTOR O~ ~N~NONMBNT~t. HE~t.'rl.t ?~lc~ ~op,..g : -c~_Tp~l, ~UL~ Sr' To 3.~osy~, ,, "..: ~E~L ~BIT~N~ BF ~E P~IT~ . ...: ., ;. · .. · . . ., .,.. ~'.:~:~.. . s~ancinq dace. ....::... . . .. . . ../ :'.. :;, ... . ' ,..?~c~t~nu, ~, ~t t~ ~,~e at ~. an. ~n~ ~t',,u~'.;~lm +,~p"t~. ~. ~ o~ ':~:: ~2 '.'Othe~ pmu~' tnn~tt~ ?nal~ c~dua~on ¢,tn~. alt a~nuTa~ s~1~. and ~tn~1 c~ctl~ feature.:' '::.'." ':-.'::' ';'-L'-.L~-: ..' A ,~. ~11' to t~ O,,n~C ~ftce It r~1r, ~ the ~nlnQ ~- ~. d~ t~c ~nk ~ co. c~ ~d 2~ ' ' ~ a '~ ~nk Orda~.' ....... T. A co,y of the Oe~,t~ of ~,cen' l. ounc, Onlller's Rm~r~ a~ ,e11' am copt, of l~s and ~m,. qual~y ~ly~.~ ~st ~ ~u~tCtmd to c~ Health ~r~m~C wtthtn 14 dz~ ifcmr c~plKt~ ~f C~ 8. A ~11 dmmt~uGti~ 4pplicmtt~ ~sC bl ftl~ with Chis ~t~t ff 4 ~ll i~ ~tng 4erected t~ ts no~ in G~jucc(~ with a t~ ~lm permit. )~~ t~ void ~. the ninetieth (90) cmlendmr dmy m~cm~' ~mCe. o6 i$suancm tf ~k: hme not be~. ~ ~a~te ~n~s c~Pd c~pleti~ Mde. F~ arm not ri~d~ble nor tr~Jfl~mule.. . / 10. I. have ~ an~ag~ ~o cMply .ich t~ ~mnm~ml C~dttt~s noted' a~.. L ' OATE: -- ,,,,-,,,,,--~ S~:I~OM 31-18fld 03 HS..q>t lz~:9I 88, TE~ J.DO /' eR 0 ~0£ ~ D ) CeNSTmJCTIDN INFO~NATXON ' ,, &_SIZE LEN6~ NELL. CAP L~LE . FACII~ITY PLOT .PLAN - Provtdee d~;r~pttm ~k l~gCh, in. lit a~llflts,. ~d ~11 ~p.. Note a~ trrqularattel. PTeieI I~ach. I~OTE: If chis applfc~Cfofl te not c,ompIK~_ !C. ~tll b~'re~urned. S>I~OM 31-18J]d 03 N~L.~I ~T:9T 88, T~ J. DO MONITORING WELL CONSTRUCTION DETAILS FLUSH GRADE MANHOLE ~to~*~ we. No: .... .-~...~...-.t~. ...... Gfoun(l 8evattonc ........................ To13 Of Riser ~ 8evat~ ......................... Staa¢ Water Leve~ ......................... Installation Completed: F~qOTECT~E MANHOI.~ COVIa! , , '~A~MA~L '. ,,. . ....:.,:.: , . .. ':" :: " '"'":WA~,_. ~T(YESI~) .... "'.' ~c ':.:, '' ' W~L ~R~ · .,. - · -. ', ', · ....... .. . :~¢ ~ · ',..... :...~:' :.' . .':.':.:.' .... ..' . ... :. .. .>. .' .. TOP OF RISER [_ I TOTAL BORI~ D~PTH ' ' OlAM~ OF BORE HOL~ DRILLI~ REVI~ED BY: ................................ TOTAL WE~ DEPTH 8EL~ TQP QF RIS~ P~ =. ............. ~ . ~///l~Consatant~ I~. MONITORING WELL CONSTRUCT1OI~AILS FLUSH GRADE MANHOLE Delta No: ................... :-:-...;..- _J- Gmum~ E~evat~m: ........................ Tel30t ~ ~ E]eva~ ........................ TOTAL BORIN(~ D~I3TH D~AMETER 01= BOR~[ HOL; I 2_q ?" L. 3='. ............... ~ L 4. '. .... .~...~ ......I=T DRILLING ~ REVIEWED TOTAL WELL DEPTH BIll. OW TOP OF ~ E[Ievaflo~: ........................ To~ Of Rlt~r ~e E~vaao.: ........................ Sta~: Waxm' Levee ........................ · ~ ~amete~: .% S~EEN - SCREEN MATi~IrAL' SCREEN GAUGE OR ~ ~ OF O~ L 0~'p1'1-4 TO 8OTTOM OF' MONITORIN~ WELL · CQMPt. ET-cO ElY: .............................. TOTAL WE]J. DEPTH 8ELDW TOP OF RISi-"-R PiPE =~ .............. FT ~onm~ntal Con~tant~,