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Home My WebLink About4050 GOSFORD ROAD (4)DelDelta //// Ak Environmental Consultants, Inc. Solving environment- related business problems worldwide 911 South Primrose Avenue • Suite K Monrovia, California 91016 USA 626.256.6662 800.477.7411 Fax 626.256.6263 February 9, 2004 Project No. PA405OG -1 Mr. Howard Wines III City of Bakersfield Fire Department Environmental Services 1715 Chester Avenue, 3rd Floor Bakersfield, CA 93301 Re: Results of Soil Vapor Extraction (SVE) Pilot Tests Texaco. Service Station 4050 Gosford Road Bakersfield, California Dear Mr. Wines: www.deltaenv.com Delta Environmental Consultants, Inc. (Delta), on behalf of Equilon Enterprises LLC dba Shell Oil Products US SHELL), has prepared this report summarizing the results of soil vapor extraction (SVE) pilot tests conducted at the above - referenced site (Figure 1). The SVE pilot testing activities were conducted in response to the City of Bakersfield Fire Department (CBFD) verbal confirmation of "Work Plan for Soil Vapor Extraction Pilot Test" Delta, November 25, 2003) on December 2, 2003 (Appendix A). The purpose of this work was to obtain data on vapor extraction parameters for use to properly design a SVE remediation system. SITE DESCRIPTION The subject site is currently an active Texaco service station located on the northeast corner of the intersection of Gosford Road and White Lane in Bakersfield, California (Figure 1). The site is located in a commercial and residentially mixed area of Bakersfield. The service station consists of three 10,000 - gallon gasoline underground storage tanks (USTs) and one 12,000 gallon UST, two dispenser islands each equipped with two multi - product dispenser pumps, a carwash and a station building (Figure 2). A member of.. Xinogeyfmental Alliance January 13, 2004 Page 2 SITE BACKGROUND Previous environmental activities at the site are summarized in the table below. Available boring data including locations and a summary of analytical results is presented in tables and figures in WGR Southwest, Inc. (WGR) report "i,'apor Extraction Well Installation Report" dated October 27, 2003. SUMMARY T6Date Activity/Method 6, No of Borings? °, Report Consultant v . - Comments Samples Date 1 /00 Phase H environmental 6 Soil Borings Unknown Pacific Petroleum hydrocarbons site assessment 1313-1 through Environ- detected in soil (BB -1, BB -6) mental Group BB -2 and BB -6) PEG) 7/01 Soil sampling during Unknown Unknown IT TPH -g and TPH -d SB989 upgrade detected with max. activities concentration of 210 mg/kg. Max. MTBE detected at 13 mg/kg 7/01 Over - excavation 50 cubic yards of Unknown IT Confirmation samples - activities soil removed. TPH -g and TPH -d detected with max. concentration of 7.9 mg/kg. Max. MTBE detected at 16 mg/kg 6/03 Site assessment 6 soil borings to 7/21/02 WGR Maximum MTBE activities maximum 65 feet concentrations in soil; bgs (BB -7 through 16,000 ug/kg. BB -12) 5/03 Site assessment 8 soil borings to 6/16/03 WGR Maximum MTBE and activities maximum 85 feet TBA concentrations in bgs (BB -13 soil; 47,000 ug/kg and through BB-20) 16,000, respectively. 9/03 SVE well installation 5 nested SVE 10/27/03 WGR All wells 2 -inch wells (VEW -1 Schedule 40 PVC with through VEW -5) 0.020" slotted screen I' 1\ SERVER \KHM_Data\Clirn<;\ Shell \_ Shell SiicsWW050 Gosford2004 -02- 09_SVEPilot Tm\RmluofSVE Pilot Tat (4050).dw January 13, 2004 Page 3 I. SITE SPECIFIC GEOLOGY AND HYDROGEOLOGY The geologic conditions in the site vicinity are characterized from alluvial deposits underlain by marine and non - marine sedimentary units, metamorphic rocks and crystalline basement material. Surface and near - surface conditions as designated by the U.S. Geological Survey is older alluvium, deposited in northwest - dipping alluvial fans resulting from outwash from the Sierra Nevada mountain range to the east. This alluvium is composed primarily of poorly graded and unconsolidated sands, sandy gravels and occasional discontinuous lenticular bodies of sandy clay and silt. Regionally, the surface of these old alluvial fans is undulatory, with a distinct dip toward the Kern River to the northwest of the site. The site itself is located along one of the crests of the alluvial fan surface "ripples ", at an elevation of approximately 390 feet above mean sea level. The total thickness of the alluvial fan deposits is estimated to range from approximately 600 feet west of the site to over 4,000 feet near the Sierra Nevada Mountains. The site lies within the Edison hydrogeologic sub -area of the Edison Maricopa area. Uppermost groundwater within this area occurs within the old alluvial fan deposits. In the site vicinity, deeper aquifers of limited areal extent are present in the consolidated non - marine sedimentary units and within fracture zones of the crystalline basement rock. The most prominent subsurface features controlling the groundwater flow direction are the groundwater barriers formed by the northwest to southwest trending Edison Fault and subparallel splays of this fault, located south and north of the site, respectively (WGR, 2003b) The soils encountered at the site during vapor extraction well installation activities during September 2003 consisted primarily of fine - grained sand to approximately 65 feet bgs. A sandy to silty clay layer was encountered above approximately 12 feet bgs. Borings logs for the vapor extraction wells are presented in Appendix B. Well construction details are presented on Table 1. HYDROCARBON DELINEATION Total petroleum hydrocarbons as gasoline (TPHg), Total petroleum hydrocarbons as diesel (TPHd), benzene, toluene, ethyl - benzene, and xylenes (BTEX) compounds and methyl tert-butyl ether (MTBE), tert-butyl alcohol TBA), di- isopropyl ether (DIPE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME) (fuel oxygenates) concentrations in soil samples collected during soil boring (BB -1 through BB -20), tank -pull activities, and vapor extraction wells installation (VEW -1 through VEW -5) is presented in Table 2. Historical sampling locations are shown on Figure 3. The data collected from the soil sampling of borings BB -1 through 1313-6 do not show concentrations of TPHg or BTEX above detection levels. TPHd was detected in soil borings 1313-1 through BB -6 at a maximum concentration of 11 mg/kg (1313-2 @ 25 feet bgs). MTBE was detected in soil borings BB -1 through 1313-6 at concentrations ranging from below detection limits to 27,000 0g/kg (1313-2 @ 20 feet bgs) by EPA Method 8260. SERVER \KHM_Datn\Climts \_S0G1\_Shdl Snts'A\4050 Gosford\2004- 02- 09 _SVE Pilot TM\RCmllsofSVE Piloi 7rn (450).doc January 13, 2004 Page 4 TPHg was detected in soil borings BB -7 through BB -12 at concentrations ranging from below detection limits to 15 mg/kg (BB -9 @ 20 feet bgs).. TPHd was indicated at a concentrations ranging from below detection limits to 4.6 mg/kg (BB -9 @ 25 feet bgs) in soil borings BB -7 through BB -12. BTEX compounds were not indicated at concentrations above detection limits in soil borings BB -7 through BB -12. Soil borings BB -7 through BB -12 showed concentrations of MTBE ranging from below detection limits to 16,000 Og/kg (BB -9 @ 20 feet bgs). Soil Borings BB -13 through BB -20 contained a maximum concentration of TPHg at 2.6 mg/kg (BB -17 @ 40 feet bgs). BTEX compounds were not detected in soil borings BB -13 through BB -20, with the exception of toluene at a concentration of 6.6 µg/kg (BB -18 @ 65 feet bgs). Soil Borings BB -13 through BB -20 showed a maximum concentration of MTBE at 47,000 µg/kg (BB -18 @ 15 feet bgs). TBA was detected at a maximum concentration of 16,000 µg/kg (BB -18 @ 10 feet bgs). The most recent soil sampling during the installation of SVE wells VEW -1 through VEW -5 contained a maximum concentration of TPHg at 28 mg/kg (VEW -5 @ 25 feet bgs). TPHd and BTEX compounds were not detected above method detection limits during the installation of the SVE wells. The maximum concentrations of MTBE and TBA indicated during the installation of the SVE wells were 85,000 µg/kg and 29,000 µg/kg (VEW -5 @ 25 feet bgs). SVE PrLOT TEST The primary objective of the SVE pilot test was to obtain data on vapor extraction parameters including: 1. Vapor flow rates from the test wells; 2. Hydrocarbon concentration versus time in the extracted soil vapors; and 3. Radius -of- influence (ROI) of the existing SVE wells on the vadose zone. Radius of influence is generally defined as the distance measured from an extraction well to a point where normalized observed vacuum equals 1% of the applied vacuum. A minimum of 0.1 inches of water is considered the lowest measurement that would indicate significant airflow for the purpose of this test. Normalized observed vacuum is defined as the ratio of observed vacuum to applied vacuum. Normalized applied vacuum is defined as 100 percent of the applied vacuum or 1. These parameters are typically used in designing an SVE system for site remediation and to evaluate if additional wells are needed to address the site. PILOT STUDY DESCRIPTION The SVE pilot study consisted of two distinct test types: 1. A. Step Test to evaluate flow versus vacuum and ROI. 2. An Extended Test to evaluate hydrocarbon concentration versus time. SERVER \KHM_Detn\Clirnts_Shcll \_Shcil Silo \4\4050 GosfaN\20(4- 02- 09SVE Pilot T.,\R Im nfSVE Pilot Tea (4050).d- January 13, 2004 Page 5 Step Tests were conducted on wells VEW -4A, VEW -4B, VEW -5A and VEW -5B, while the Extended Test was conducted on Well VEW -4A. Well VEW -4A is screened from 10 to 30 feet bgs while VEW -5A is screened from 5 to 30 feet bgs. Both VEW -4B and VEW -5B were screened from 40 to 65 feet bgs. Boring logs for the extraction wells are presented in Appendix B. PILOT STUDY STEP TEST OPERATION Four SVE Step Tests were conducted on December 9, 2003. The Step Tests consisted of the following: 1. Soil vapors were extracted from the test well (VEW -4A, VEW -4B, VEW -5A, and VEW -5B) for approximately 2 hours at each well (3 steps at 45 minutes /step). 2. Applied vacuum on the test well was measured. 3. During the Step Test on Well VEW -4A, nearby wells VEW -2A, VEW -2B, VEW -3A, VEW -3B, VEW- 4B, VEW -5A, and VEW -5B were used as observation wells. A combination of shallow wells (screened within the interval of 5 to 30 feet bgs) and deep wells (screened within the interval of 35 to 65 feet bgs) were used as observation wells in the step test to determine the influence between the shallow zone and deep zone. 4. During the Step Test on Well VEW -4B, nearby wells VEW -2A, VEW -3A, VEW -4A, and VEW -5A were used as observation wells. Shallow wells (screened within the interval of 5 to 30 feet bgs) were used as observation wells in the step test to determine the influence between the shallow zone and deep zone. 5. During the Step Test on Well VEW -5A, nearby wells VEW -2B, VEW -3B, VEW -4B, and VEW -5B were used as observation wells. Deep wells (screened within the interval of 35 to 65 feet bgs) were used as observation wells in the step test to determine the influence between the shallow zone and deep zone. 6. During the Step Test on Well VEW -5B, nearby wells VEW -2A, VEW -3A, VEW -4A, and VEW -5A were used as observation wells. Shallow wells (screened within the interval of 5 to 30 feet bgs) were used as observation wells in the step test to determine the influence between the shallow zone and deep zone. 7. Wells VEW -lA and VEW -1B were not used as observation wells during the step tests due to a shortage of observation well caps. 8. Vacuum influence was monitored every 15 minutes. 9. Vacuum readings were taken using a monometer for both the extraction well and the observation wells. 10. Vapor flow rates were measured on the test well. 11. Flow rates were determined using a pitot tube and monometer. tSERVER\K.E Date \Clim&i_Shdl \_Shell Sites\4\4050 GosfordQ(X a- 02- 09_SVE Pilot TwUtmhl ofSVE Pilot Tmi (4050).doc January 13, 2004 Page 6 12. Vapor samples were measured in the field with a photo ionization detector (PID), flame ionization detector (FID) and Fixed Gas Meter for hydrocarbons, carbon dioxide, and oxygen. 13. Soil vapor samples were collected at the beginning and end of each Step Test for laboratory analysis of Total Petroleum Hydrocarbons as gasoline (TPHg) using EPA Method TO -3, benzene, toluene, ethyl- benzene, and xylenes (BTEX Compounds) and methyl tert-butyl ether (MTBE), tert-butyl alcohol (TBA), di- isopropyl ether (DIPE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME) (fuel oxygenates) using EPA Method TO -15. Nitrogen, methane, carbon dioxide, carbon monoxide, and oxygen were measured using ASTM Method D -1946 ( "Fixed Gas Analysis "). Soil vapor samples were collected only at the beginning of the Step Test for Wells VEW -5A and VEW -4A. tSummaries of the SVE Step Tests data are provided in Tables 3 through Table 6. Field data are included in Appendix C. The following is a summary ofthe Step Test conducted on Well VEW -4A: Step 1: Vacuum set at 2.5 inches of mercury for 45 minutes. Step 2: Vacuum set at 5.5 inches of mercury for 45 minutes. Step 3: Vacuum set at 10.0 inches of mercury for 45 minutes. The following is a summary of the Step Test conducted on Well VEW -4B: Step 1: Vacuum set at 2.5 inches of mercury for 45 minutes. Step 2: Vacuum set at 5.0 inches of mercury for 45 minutes. Step 3: Vacuum set at 9.5 inches of mercury for 45 minutes The following is a summary of the Step Test conducted on Well VEW -5A: Step 1: Vacuum set at 2.0 inches of mercury for 45 minutes. Step 2: Vacuum set at 5.5 inches of mercury for 45 minutes. Step 3: Vacuum set at 10.0 inches of mercury for 45 minutes The following is a summary ofthe Step Test conducted on Well VEW -5B: Step 1: Vacuum set'at 2.0 inches of mercury for 45 minutes. Step 2: Vacuum set at 5.0 inches of mercury for 45 minutes. Step 3: Vacuum set at 8.5 inches of mercury for 45 minutes. I111111RI};kiM Da,,ICIi -.1 Shd11_ShrJl S- 1114050 G,11.1112004- 02- 09SVE PIIOI T- 111 -11, ofSVEPkI T- (4050).doc January 13, 2004 Page 7 IPILOT STUDY EXTENDED TEST OPERATION On December 9, 2003, Delta performed a 67 -hour constant vacuum SVE Extended Test utilizing Well VEW -4A at an applied vacuum of approximately 9.5 inches of Hg [129 inches of water]. The following procedures were conducted during the Extended Test: 1. The test commenced at 5:40 pm of December 9 and continued on until 1:00 pm, December 12. 2. Applied vacuum on the test well was measured. 3. Nearby wells VEW -1A, VEW -1B, VEW -2A, VEW -2B, VEW -3A, VEW -3B, VEW -4B, VFW-5A, and VEW -5B (74, 74, 54, 54, 35, 35, 0, 43, and 43 feet from Well VEW -4A, respectively) were used as observation wells. 4. Vacuum influence was monitored approximately every 2 hours for the first 4 hours and then every 12 hours. 1 5. Vacuum readings were taken using a monometer for both the extraction well and the observation wells. 6. Vapor flow rates were measured on the test well. 7. Flow rates were determined using a pitot tube and monometer. 8. Vapor samples were measured in the field with a PID, FED and Fixed Gas Meter for hydrocarbons, carbon dioxide, and oxygen. 9. Soil vapor samples were collected from the extraction well at the beginning, approximate mid -point and end of the Extended Test. Soil vapor samples collected during the Extended Test were analyzed for TPH- g using EPA Method TO -3 and BTEX compounds and fuel oxygenates using EPA Method TO -15. Monitoring data of the Extended Test are presented in Table 7. SVE PELOT TEST FINDINGS 1 The following sections present the principal findings of SVE pilot test. VAPOR FLOW RATES AND APPLIED VACUUM The results of the SVE step test performed on Well VEW -4A are displayed on Table 3 and summarized below: Vapor flow rates ranged from approximately 37.0 to 60.1 standard cubic feet per minute (scfm). An increase in the average vapor flow rate was observed with 'increasing vacuum. Applied vacuum ranged from approximately 2.5 inches of mercury to 10.0 inches ofmercury. SE11_11 HM_111WICli.\_Shcln_Shcll Sitcs4M050 Gos(ord,2IXK- 02- 09_SVE Pilni 7csUtcsuhs ofSVE Piloi Trn (4050).doc January 13, 2004 Page 8 The results of the SVE step test performed on Well VEW -4B are displayed on Table 4 and summarized below: Vapor flow rates ranged from approximately 53.2 to 61.6 scfm. An increase in the average vapor flow rate was observed with increasing vacuum. Applied vacuum ranged from approximately 2.5 inches of mercury to 9.5 inches of mercury. The results of the SVE step test performed on Well VEW -5A are displayed on Table 5 and summarized below: 1 Vapor flow rates ranged from approximately 42.6 to 60.1 scfm. An increase in the average vapor flow rate was observed with increasing vacuum. Applied vacuum ranged from approximately 2.0 inches of mercury to 10.0 inches of mercury. The results of the SVE step test performed on Well VEW -513 are displayed on Table 6 and summarized below: Vapor flow rates ranged from approximately 32.7 to 65.1 scfm. 1 • An increase in the average vapor flow rate was observed at the higher vacuum. Applied vacuum ranged from approximately 2.0 inches of mercury to 8.5 inches of mercury. A graph presenting flow rate versus vacuum is presented as Figure 4 The effect of the applied vacuum on well VEW -4A was observed as pressure at observation wells VEW -2B, VEW -4B, and VEW -513 during the Step Tests. The effect of the applied vacuum on Well VEW -413 was observed as pressure at observation wells VEW -2A, VEW -3A, VEW -4A, and VEW -5A during the Step Test. Data from these wells was assumed to be invalid and was not used in subsequent calculations. Wells VEW -IA and VEW -1B were not used during the Step Tests due to a shortage of well caps. Additional well caps were supplied during the Extended Test. The results of the SVE Extended Test performed on Well VEW -4A are summarized below: Vapor flow rates ranged from approximately 44.7 to 68.9 scfm. The average flow rate was approximately 57.8 scfm. Applied vacuum was approximately 9.5 inches of Hg. The observed vacuum in Well VEW -2A (54 feet from the extraction well) was an average of 0.56 inches of water (0.44% of applied vacuum). The observed vacuum in Well VEW -3A (35 feet from the extraction well) was an average of 0.73 inches of water (0.57% of applied vacuum). 1 \\$ ERVER \KHM_DUin\Climts\_S6o111_$h !I SiiaW \4050 Gosfo d 2004-02 -09 SVE Pilol Tcn \Rav s ofSVE Piloi Tm (4050).doc January 13, 2004 Page 9 The observed vacuum in Well VEW -3B (35 feet from the extraction well) was an average of 1.08 inches ofwater (0.85% of applied vacuum). The observed vacuum in Well VEW -5A (43 feet from the extraction well) was an average of 0.98 inches ofwater (0.77% of applied vacuum). Observed vacuum results for the Extended test are presented in Table 7. VAPOR CONCENTRATIONS Field data for the vapor samples were collected from Wells VEW -4A during the SVE Test are summarized below: PID concentrations ranged from 690 to 1,370 parts per million by volume (ppmv). Carbon dioxide concentrations ranged from 12.2 to 14.4 percent by volume ( %V). Oxygen concentrations ranged from 0.6 to 1.0 %V. Field data for the vapor samples were collected from Well VEW -4B during the SVE Test are summarized below: PID concentrations ranged from 100 to 170 ppmv. Carbon dioxide concentrations ranged from 6.0 to 6.5 %V. Oxygen concentrations ranged from 8.0 to 9.2 %V. Field data for the vapor samples were collected from Well VEW -5A during the SVE Test are summarized below: PID concentrations ranged from 821 to 1,300 ppmv. Carbon dioxide concentrations ranged from 11.0 to 12.9 %V. Oxygen concentrations ranged from 2.2 to 3.0 %V. Field data for the vapor samples were collected from Well VEW -5B during the SVE Test are summarized below: PID concentrations ranged from 188 to 483 ppmv. Carbon dioxide concentrations ranged from 6.4 to 7.1 %V. Oxygen concentrations ranged from 7.3 to 8.9 %V. RSERVERU :FiM_Data \Clicn s \_Shdl\ Shdl SiiaWW050 Gos(oN\2004- 02- 09_SVE Pilm Trn111 -11, oISVE PilotTat 110111.doc January 13, 2004 Page 10 Field data for the vapor samples were collected from Wells VEW -4A during the SVE Extended Test are summarized below: PID concentrations ranged from 240 to 1,370 parts per million by volume (ppmv). Carbon dioxide concentrations ranged from 3.6 to 12.1 percent by volume ( %V). Oxygen concentrations ranged from 1.3 to 14.5 %V. Laboratory data for the vapor samples analyzed by ASTM Method D -1946 collected from Wells VEW -4A, VEW - 4B, VEW -5A and VEW -5B during the Step Tests are summarized below: V4 ells Test V 41 OaybeII` y Carbon Dioxide _( /o)e VEW -4A Step Test, Beginning 2.8 15.7 VEW -4B Step Test, Beginning 10.3 7.6 VEW -4B Step Test, End 10.7 1 7.0 VEW -5A Step Test, Beginning 2.6 15.0 VEW -5B Step Test, Beginning 5.5 11.5 VEW -5B Step Test, End 7.0 10.2 Hydrocarbon laboratory data for the vapor samples collected from VEW -4A, VEW -4B, VEW -5A and VEW -5B during the Step Tests and Extended Test are summarized below: v NATest] &Times 1 T'PHgr_ Q- bar s VEW -4A Step Test, Beginning 2,280 2,000 VEW -4B Step Test, Beginning 134 75 VEW -4B Step Test, End 62 33 VEW -5A Step Test, Beginning 12,300 4,700 VEW -5B Step Test, Beginning 296 67 VEW -5B Step Test, End 456 110 VEW -4A Extended Test, Beginning 5,680 3,800 VEW -4A Extended Test, Mid -Point 1,100 1,600 VEW -4A Extended Test, End 798 470 Complete analytical results are presented in Tables 8 and 9. The laboratory report and chain -of- custody documentation are included in Appendix D. A graph presenting PID concentrations versus operating time is presented as Figure 5. A graph of MTBE and TPHg concentrations versus operating time is presented as Figure 6. ISERVER\KI4M_Datak0imm_Shc1I\_ShcllSitaW ,1050 Gosforc!U004-07- 09SVE Pilot Tm\R=lts ofSVE Pilot TM (4050)Aoc January 13, 2004 Page 11 SOIL VAPOR MASS REMOVAL RATE AND TOTAL MASS REMOVED The subsurface TPHg and BTEX vapor concentrations and vapor flow rates were used to calculate the TPHg mass removal rates and total TPHg mass removed during the pilot study. The removal rates were calculated based on concentrations and flow rates measured during the test. The results are included in Table 10. 1 • TPHg mass removal rates from Well VEW -4A are estimated at 53.9 pounds per day (lb /day). Based on an average TPHg concentration of 10,352 ug/L, a total of 150.4 pounds (lbs) of TPHg were removed over a 67 -hour period during the Extended Test on Well VEW -4A. Subsurface MTBE vapor concentrations and vapor flow rates were used to calculate the MTBE mass removal rates and total MTBE mass removed during the pilot study. The removal rates were calculated based on concentrations and flow rates measured during the test. The results are included in Table 10. MTBE mass removal rates from Well VEW -4A are estimated at 37.5 pounds per day (lb /day). Based on an average MTBE concentration of 7,200 ug/L, a total of 104.6 pounds (lbs) of MTBE were removed over a 67 -hour period during the Extended Test on Well VEW -4A. SVE RADIUS OF INFLUENCE To estimate SVE radius of influence for this site, the normalized vacuum, influence data and distances from the extraction well VEW -4A to the observation wells (VEW -2A, VEW -3A, VEW -3B, and VEW -5A) were plotted on a semi - logarithmic chart. Supporting data for these plots are tabulated on Tables 3 and 7 and the radius of influence plots are presented as Figures 7 through 9. Data collected for the Step Test resulted in a radius of influence that was approximately 25 feet to wells screened in the shallow zone (VEW -2A, VEW -3A, and VEW -5A). Data collected for the Extended Test resulted in a radius of influence that is lower than the 1% normalization in wells screened in the shallow zone (VEW -IA, VEW -2A, VEW -3A, and VEW -5A). The vacuum influences of the observation wells varied between 0.44% and 0.77% of applied vacuum and a ROI could not be created using this method. Data collected for the Extended Test resulted in a radius of influence that was approximately 33 feet to wells screened in the deep zone (VEW -1B, VEW -2B, VEW -3B, and VEW -5B). 1 \\ SERVER.. DM1Cliaus\_She1H_Shell Sitr \44050 Gosfonl\2004 -02- 09 _SVE Pilot TwURmhsofSVE Pilot Tan (4050) doc January 13, 2004 Page 12 Well VEW -513 was also tested as an extraction point. The normalized vacuum influence data and distances from Well VEW -513 to the observation wells (VEW -2A, VEW -3A, and VEW -4A) were plotted on a semi - logarithmic chart. Supporting data for this plot is tabulated on Table 6 and the radius of influence plot is presented as Figure 10. 0 Data collected for the Step Test resulted in a radius of influence that was approximately 11 feet to wells screened in the shallow zone (VEW -2A, VEW -3A, and VEW -4A). Shallow wells (screened within the interval of 5 to 30 feet bgs) were used as observation wells in the step test to determine the influence between the shallow zone and deep zone. CONCLUSIONS AND RECOMMENDATIONS Results of the SVE pilot test do support vapor extraction as an effective remediation technology for the residual hydrocarbon concentrations in the vadose zone, due to the high permeability of the lithology. In addition, the elevated levels of carbon dioxide and lower than atmospheric concentrations of oxygen in the extracted vapors indicate that the addition of oxygen to the subsurface could also enhance biodegradation of hydrocarbons. REMARKS These activities as reported in this report were performed by Delta under the supervision of a state of California registered- professional engineer. The recommendations contained in this report represent Delta's professional opinions based upon the currently available information and are arrived at in accordance with currently acceptable professional standards. This report is based upon a specific scope of work requested by the client. The Contract between Delta and its client outlines the scope of work, and only those tasks specifically authorized by that contract or outlined in this report were performed. This report is intended only for the use of Delta's Client and anyone else specifically listed on this report. Delta will not and cannot be liable for unauthorized reliance by any other third party. Other.than as contained in this paragraph, Delta makes no express or implied warranty as to the contents of this report. MERVERU HM_Data%Climm \_Shcll\_Slid) Sitcs \4\4050 Gosford\2004 -02- 09 _SVE Pilot Tm\Rm ltcofSVE Pilot TM (4050).doc January 13, 2004 Paae 13 Should you have any questions or need any further assistance, please contact either Ms. Marcie Innes or Mr. Bradley Clark (Delta) at (626) 256 -6662 or Mr. Anthony Palagyi (SHELL Engineer) at (425) 377 -8530. Sincerely, Delta En«ronmental Consultants, Inc. Oscar Valdez Staff Engineer, 1 t Bradley Clark, P.E. Senior Project Engineer `, G si Marcie nnes, OP.E. Senior Project Engineer cc: Mr. Anthony Palagyi, Shell Oil Products US Mr. Arnaldo Medina, Shell Oil Products US Mr. Dan Walsh, CPG - Shell Global Solutions (US) Inc. 1 SERVER\KH,\f_D.m \Qimis\ Si cdl\_ShOl SitaUW050 Gosfard\2004 -02 -09 SVEPilot T=\R —tits ofSVE Pilot Tmt (4050).doc ATTACHMENTS; Table 1 — Well/Boring/Probe Data Table 2 — Historical Soil Analytical Results Table 3 — Summary of SVE Step Test Data (VEW -4A) Table 4 — Summary of SVE Step Test Data (VEW -413) Table 5 — Summary of SVE Step Test Data (VEW -5A) Table 6 — Summary of SVE Step Test Data (VEW -5B) Table 7 — Summary of SVE Extended Test Data Table 8 — Summary of SVE Analytical Data (EPA TO -3 and TO -15) Table 9 — Summary of SVE Analytical Data (ASTM D -1946) Table 10 — Summary Mass Removal Rates Figure 1 — Site Location Map Figure 2 — Site Map with Well Locations Figure 3 — Site Map with Historical Sampling Locations Figure 4 — Flow Rate vs. Vacuum Figure 5 — PID Concentration vs. Operating Time Figure 6 — Influent Concentration vs. Operating Time Figure 7 — Radius of Influence Determination Plot (VEW -4A Step Test) Figure 8 — Radius of Influence Determination Plot (VEW -4A Extended Test to Shallow Wells) Figure 9 — Radius of Influence Determination Plot (VEW -4A Extended Test to Deep Wells) Figure 10 — Radius of Influence Determination Plot (VEW -513 Step Test) Appendix A — CBFD Verbal Confirmation on December 2, 2003 Appendix B — SVE Well Boring Logs Appendix C — SVE Field Data Appendix D — Certified Analytical Reports and Chain -of- Custody Documentation IP REFERENCES Bakersfield Fire Department, 2003, Texaco Service Station, 4050 Gosford Road, Bakersfield, California, February 25, 2003. Delta Environmental Consultants, Inc., 2003, Work Plan for Soil Vapor Extraction Pilot Test, Texaco Service Station, 4050 Gosford Road, Bakersfield, California, November 25, 2003. WGR Southwest, Inc. 2002, Site Assessment Report, Texaco Service Station, 4050 Gosford Road, Bakersfield, California, July 21, 2002. WGR Southwest, Inc. 2003a, Site Assessment and Remediation Test Workplan, Texaco Service Station, 4050 Gosford Road, Bakersfield, California, January 28, 2003. WGR Southwest, Inc. 2003b, Vapor Extraction Well Installation Report, Texaco Service Station, 4050 Gosford Road, Bakersfield, California, October 27, 2003. a TABLES Table 1 1. Well/Boring/Probe Data 4050 Gosford Road Bakersfield, California I ...... tAMSL I .............. to .................... BB -1 Boring 1/19/00 40.0 5 5-40 BB-2 Boring 1/19/00 40.0 5 540 BB-3 Boring 1/19/00 20 5 5-20 BB4 Boring 1/19/00 20 5 5-20 B13-5 Boring 1/19/00 20 5 5-20 BB-6 Boring. 1/19/00 20 5 5-20 BB-7 Boring 6/21/02 60 5 5-60 Hollow Stem Auger BB-8 Boring 6/20/02 60 5 5-60 Hollow Stein Auger BB-9 Boring 6/20/02 65 5 5-65 Hollow Stem Auger BB-10 Boring 6/20/02 65 5 5-65 Hollow Stein Auger BB-11 Boring 6/20102 60 5 5-60 Hollow Stem Auger BB-12 Boring 6/20/02 60 5 5-60 Hollow Stein Auger BB-13 Boring 5/6/03 85 5 5-85 Hollow Stein Auger BB-14 Boring 5/7/03 85 5 5-85 Hollow Stem Auger BB-15 Boring 5/7/03 85 5 5-85 Hollow Stein Auger BB-16 Boring 5/7/03 85 5 5-85 Hollow Stein Auger BB-17 Boring 5/8/03 85 5 5-85 Hollow Stein Auger BB-18 Boring 5/8/03 85 5 5-85 7 Hollow Stem Auger BB-19 Boring 5/6/03 85 5 5-85 Hollow Stein Auger BB-20 Boring 5/6/03 85 5 5-85 Hollow Stem Auger VEW-IA SV Well 9/25/03 55 5 5-55 2 10 30 Hollow Stein Auper VEW-113 SV Well 9/25/03 55 5 5-55 2 40 55 Hollow Stein Auger VEW-2A SV Well 9/24/03 60 5 5-60 2 5 30 Hollow Stein Auger VEW-213 SV Well 9/24/03 60 5 5-60 2 40 60 Hollow Stein Auger VEW-3A SV Well 9/24/03 50 5 5-50 2 5 25 Hollow Stein Auger VEW-3B SV Well 9/24/03 50 5 5-50 2 35 50 Hollow Stem Auger VEW-4A SV Well 9/23/03 65 5 5-65 2 10 30 Hollow Stem Auger VEW4B SV Well 9/23/03 65 5 5-65 2 40 65 Hollow Stein Auger VEW-5A SV Well 9/23/03 65 5 5-65 2 5 30 Hollow Stem Auger VEW-513 SV Well 9/23/03 65 5 5-65 2 40 65 Hollow Stem Auger Notes: AMSL = Above mean sea level Not applicable GWM = Groundwater monitoring N/A = Data not available Data prior to September 2003 supplied by WGR Southwest, Inc. 1 of 1 Table 2 Ilistorical Soil Analytical Results 4050 Gosford Road Bakersfield, California TOTAU BENZEiNK::::::::TIULUEW: ETHYL, lid BB-1 1/19/00 5 ND(<I,O). ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 1.9 NA NA NA NA NA NA 10 ND(<I.0) 5.60 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 2.3 NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) Nlj(<0.0050) ND(<0.015) 7.8 8.1 NA NA NA NA NA 20 ND(<I.0) NL)(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 1.7 NA NA NA NA NA NA 25 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.36 NA NA NA NA NA NA 35 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.28 NA NA NA NA NA NA 40 ND(<I.0) ND <5.0 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 2.8 NA NA NA NA NA NA BB-2 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.76 NA NA NA NA NA NA 10 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL( <0.015) 19 NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 42 NA NA NA NA NA NA 20 ND(<I.0) ND(<5.0) NA ND(<0.0050) NL)(<0.0050) ND(<0.0050) ND(<0.015) 51 27 NA NA NA NA NA 25 ND(<].0) 11 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 6.7 NA NA NA NA NA NA 30 Nl)(<].0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0,015) 0.15 NA NA NA NA NA NA 35 ND(<I.0) 7 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 10 NA NA NA NA NA NA 40 ND <I.0 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL)(<0.015) 0.14 NA NA NA NA NA NA BB-3 1/19/00 5 ND(<].0) ND(<5.0) NA ND(<0.0050) NU(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<I.D) ND( <5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND <I.0 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA BB-4 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(< 1. 0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND <1.0 NL),(<5.0) NA ND(<0.0050) ND(<0.0050) NL)(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA BB-5 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) Nt)(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) NL)(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL)(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA BB-6 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<].0) ND(<5.0) NA ND(<0.0050) NL( <0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND <I.0 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.039 0.039 NA NA NA NA NA Dispenser Samples D-1-4 7/5/01 10.00 210 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.017 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-1-8 7/5/01 ND(<0.5) ND(<5.0) NA Ni)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) ' NA D-2-4 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) NL)(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-2-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0650) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-3A 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.29 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-3-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.041 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D44 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) NL)(<0.0050) ND(<0.0050) ND(<0.010) NA 0.028 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D4-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0,010) NA ND(<0.25) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA 1 of 10 fable 2 Historical Soil Analytical Results 4050 Gosrord Road Bakersfield, California I:PH,G: TPli,D. TOTAL-:-:-::BENZENE TOLUENE-: ETHYL;. I ............................... ZEN g' BB-I 1/19/00 Piping Samples P-1-4 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.96 0.94 ND(<0.010) ND(<0.010) ND(<0.010) NA 11-1-8 7/5/01 0.78 ND(<5.0) NA ND(<6.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 2.4 6.5 ND(<0.010) ND(<0.010) ND(<0.010) NA P-1-10 7/5/01 2.8 ND(<5.0) NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) 1.9 ND(<0.010) ND(<0.010) ND(<0.010) NA P-1-12 7/5/01 1.10 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 13 2.1 ND(<0.010) ND(<0.010) ND(<0.010) NA P-1-14 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) Nf)(<0.0050) ND(<0.0050) ND(<0.010) NA 2.7 1.3 ND(<0.010) ND(<0.010) ND(<0.010) NA P-2-4 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.2 3.8 ND(<0.010) ND(<0.010) ND(<0.010) NA P-2-8 7/5/01 4.3 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 8.2 ND(<6.3)* ND(<0.010) ND(<0.010) ND(<0.010) NA P -2 -10 7/5/01 2.6 31 NA ND(<0.0050) 0.055 0.024 0.223 NA 2.7 4.5 ND(<0.010) ND(<0.010) ND(<0.010). NA P-3-4 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.02 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA P-3-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.017 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA P-4-4 7/5/01 ND(<0.5) ND(<5:0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.012 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA P-4-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND <0.25 ND(<0.010) ND(<0.010) ND(<0.010) NA Over-Excavation Samples D-1-10 7/17/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.025) NA NA NA NA NA NA D-1-NSI0 7/17/01 NL)(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) 0.026 0.014 NA NA NA NA NA D-I-WSI0 7/17/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) 0.042 0.0088 NA NA NA NA NA P -1 -20 7/17/01 3.5 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) 4.4 6.1 NA NA NA NA NA P-I-WS20 7/17/01 5.8 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) 6.5 9.9 NA NA NA NA NA P-i-ES18 7/17/01 3.8 ND(<5.0)- NA ND(<0.0050) NL)(<0.0050) ND(<0.0050) ND(<0.010) 5.3 8.3 NA NA NA NA NA P-2-20 7/17/01 4.3 ND(<5.0) NA ND(<0.0050) Nl)(<0.0050) ND(<0.0050) ND(<0.010) 6.3 10 NA NA NA NA NA P-2-WS20 7/17/01 7.9 ND(<5.0) NA ND(<0.0050) NIX<0.0050) ND(<0.0050) ND(<0.010) 10 16 NA NA NA NA NA Stockpile Samples SP-I-A 7/17/01 Ni)(<0.5) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP-1-13 7/17/01 15 NA NA ND(<0.0050) 0.23 0.15 1.4 NA NA NA NA NA NA NA SP-2-A 7/17/01 ND(<0.5) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) Ni)(<0.010) NA NA NA NA NA NA NA SP-2-13 7/17/01 ND(<0.5) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP-3-A 7/17/01 ND(<0.5) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP-3-B 7/18/01 ND( <0.5) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP -1,2A© 7/17/01 NA NA ND(<0.5) NA NA NA NA NA NA NA NA NA NA NA SP-213,30 7/17/01 NA NA ND(<0.5) NA NA NA NA NA NA NA NA NA NA NA SP-4-A 7/17/01 3.3 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) 0.033 NA NA NA NA NA NA NA SP4-B 7/17/01 1.9 NA NA ND(<0.0050) 0.0091 ND(<0.0050) 0.036 NA NA NA NA NA NA NA SP-4 -C 7/17/01 1.5 NA NA ND(<0.0050) ND(<0.0050) NtX<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP-4-13 7/17/01 2 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP-4- A,B,C,D(D 7/17/01 NA NA 2.39 NA NA NA NA NA NA NA NA NA NA NA 2 of 10 Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California TPtt,D.:::::::::: TOTAL:::::::::HENZENE TOLUENE'-: 1311-1 1/19/00 BB-7 6/21/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.016 NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.006 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 20 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 25 0.077 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.037 NP NP NP NP NA 30 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.026 NP NP NP NP NA 35 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 40 ND(<0.05) ND(<2) NA ND(<0,0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.083 NP NP NP NP NA 45 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.006 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.011 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 60 0.068 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.012 NP NP NP NP NA BB-8 6/20/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 10 NL)(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.005 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 20 2.000 ND(<2) NA ND(<0M50) NL( <0.0050) ND(<0.0050) ND(<0.0050) NA 1.300 NP NP NP NP NA 25 2.300 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.500 NP NP NP NP NA 30 0.540 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.110 NP NP NP NP NA 35 0.250 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.240 NP NP NP NP NA 40 0.330 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.170 NP NP NP NP NA 45 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.017 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.012 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 60 ND(<0.05) NL)(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA BB-9 6/20/02 5 0.310 2.100 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.023 NP NP NP NP NA 10 8.500 ND(<2) NA ND(<0.0250) ND(<0.0250) ND(<0.0250) ND(<0.0250) NA 7.300 NP NP NP NP NA 15 5.600 ND(<2) NA NIX<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 11.000 NP NP NP Nil NA 20 15.000 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 16.000 NP NP NP NP NA 25 0.890 4.600 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.730 NP NP NP NP NA 30 0.330 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.099 NP NP NP NP NA 35 0.360 2.000 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.015 NP NP NP NP NA 40 ND(<0.05) ND(<2) NA ND(<0.0050) Ni)(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 45 0.660 ND(<2) NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.400 NP NP Nil NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.045 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.046 NP NP NP NP NA 60 ND(<0.05) ND(<2) NA Nl)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.005 NP NP NP NP NA 65 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.053 NP NP NP NP NA 3 of 10 Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California TPH-IY. TOTAL-: BENZENE TOLUENE-'..-: ETHYL-: TOTAL: X MTBE- M.TBE TBA - DI PE: - El BE:::::::::::::: TAME::::::::::::::: Ethiriol I ....... m' m BB-1 1/19/00 BB-10 6/20/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.060 NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.058 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA NL( <0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.020 NP NP NP NP NA 20 0.086 ND(<2) NA ND(<0,0050) ND(<0,0050) ND(<0.0050) ND(<OR050) NA 0.008 NP NP NP NP NA 25 0.760 ND(<2) NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.690 NP NP NP NP NA 30 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.030 NP NP NP NP NA 35 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.039 NP NP NP NP NA 40 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.010 NP NP NP NP NA 45 0.220 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.410 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.023 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) NL)(<0.0050) NL)(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 60 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.040 NP NP NP NP NA 65 0.056 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.070 NP NP NP NP NA BB-11 6/20/02 5 0.400 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.000 NP NP NP NP NA 10 1.700 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL)(<0.0050) NA 3.000 NP NP NP NP NA 15 9.500 ND(<2) NA ND(<0.0050) Nl)(<0.0050) ND(<0.0050) ND(<0.0050) NA 5.200 NP NP NP NP NA 20 5.100 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 11.000 NP NP NP NP NA 25 3.300 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.650 NP NP NP NP NA 30 1.400 ND(<2) NA ND(<0.0050) NI)(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.140 NP NP NP NP NA 35 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 40 0.180 ND( <2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.011 NP NP NP NP NA 45 0.130 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.010 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.020 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA NL( <0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.023 NP NP NP NP NA 60 0.180 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA BB-12 6/20/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) NL)(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.010 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.022 NP NP NP NP NA 20 ND(<0.05) ND(<2) NA ND(<0.0050) NE)(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 25 2.900 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.510 NP NP NP NP NA 30 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.006 NP NP NP NP NA 35 0.240 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.032 NP NP NP NP NA 40 12.000 ND(<2) NA ND(<0.0050) ND(<6.0050) ND(<0.0050) ND(<0.0050) NA 1.300 NP NP NP NP NA 45 0.860 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.850 NP NP NP NP NA 50 0.150 ND(Q) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.300 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.033 NP NP NP NP NA 60 0.081 ND(<2) NA Ni)(<0.0050) Nl)(<0.0050) NL)(<0.0050) NLK<0.0050) NA 0.120 NP NP NP NP NA 4 o1IO Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California TOTAL-: RE-NZENK-:-:-:-:I',OLUEN.E-:-:-:-:-: ETHYU.,: -":-:-:TOTAU AME.:.:::: E.. Amp, 0. 3 T:. BB-I BB -13 5/6/03 5 ND(<0.50) NA NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 10 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.012 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 15 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0075 ND(<0.0050) ND(<0.010) ND(<O.OiO) ND(<0.010) ND(<0.250) 20 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.016 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 25 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.009 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.046 0.250 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.027 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0073 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0053 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0051 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 NL)(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.005 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.067 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) NL)(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND <0.610 N BB-14 5/7/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 10 0.50 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.400 0.130 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 15 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 4.000 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 20 ND(<0:50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 4.300 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 25 2.6 NA NA ND(<0.130) ND(<0.130) ND( <0.130) ND(<0.260) NA 20.000 3.600 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 30 ND(<0.50) NA NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 16.028 0.290 ND(<0.010) ND( <0.010) ND(<0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.450 0.067 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.700 0.650 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 45 0.61 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.670 1.100 ND(<0.010) ND( <0.010) ND(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.012 0.120 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA, ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) 0.400 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) NL)(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( 0.010) NA 0.0078 ND(<0.0050) ND(<0M0) ND(<0.010). ND(<0.010) ND(<0.250) 5 of 10 Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California TPH,G: TMD TOTAL: BENZENK TOLUENE-: - ETHYL;- A'OTAL: MTBF - MTBE MB; TAM E:::< - Etfi ripk ... I ..................... in BB-I 1/19/00 BB-15 5/7/03 5 NL)(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.440 0.740 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 10 1.5 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 4.400 7.000 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0150) 15 ND(<0.50) NA NA ND(<0.0050) Nl)(<0.0050) ND(<0.0050) ND(<0.010) NA 3.300 1.900 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 20 ND(<0.50) NA NA ND(<0A30) ND(<0.130) ND(<0.130) ND(<0.260) NA 6.400 2.700 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 25 ND(<0.50) NA NA ND(<0A30) ND(<0.130) ND(<0.130) NL)(<0.260) NA 39.000 4.800 ND(<0.250) ND(<0.250) ND(<0.250) 12.000 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) Ni)(<0.010) NA 0.460 0.650 ND(<0.010) ND(<0.010) ND( <0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA 0.140 0.210 ND(<0.010) Nl)(<0.010) NL)(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0,130) ND(<0.130) ND(<0.130) ND(<0.260) NA 0.870 2.200 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 45 ND(<0.50) NA NA ND(<0.0050) NE)(<0.0050) ND(<0.0050) ND(<0.010) NA 0.063 1.000 ND(<0.010) ND(<0.010) ND(<0.010) ND(<6.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.460 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 Nl?(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.051 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0,50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.028 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.026 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0J0) NA NA ND(<0.0050) Ni)(<0.0050) ND(<0.0050) ND(<0.010) NA 0.007 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) NV(<0.0050) ND(<0.0050) ND(<0.010) NA 0.061 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) B13-16 5n103 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0056 0.150 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.010) 10 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 10.000 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 15 NL)(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 16.000 2.300 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 20 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 8.700 13.000 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.010) 25 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 40.000 6.400 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.420 1.700 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) Nl)(<0.0050) ND(<0.0050) ND(<0.010) NA 0.260 1.600 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0.130) ND( <0.130) ND(<0.130) ND(<0.260) NA 23.000 1.400 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 45 ND(<0.50) NA NA ND(<0.0050) NL)(<0.0050) ND(<0.0050) ND(<0.010) NA 0.450 0.180 ND(<0.010) ND(<0.010) Nl)(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.026 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) Nl)(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) NF)(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0J0) NA NA ND(<0.0050) ND(<0.0050) ND(<0M50) ND(<0,010) NA ND(<0M50) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<O.OiO) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) Ni)(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.018 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 6 of 10 m m m m m = m m m m m m m m = m = m Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersricld, California BENZENE-:-:-::TIOLUENE-:-:-:-:-: ETHYL; MT.BE:-:-: TBA ..... T-AME Ethiriol Samq e. I ........ m 1i I ...... fingAgy BB-1 1/19/00 BB-17 5/8/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 10 ND(<0.50) NA NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.270 0.370 ND(<0.010) ND(<0.010) ND(<0,010) ND(<0.250) 15 0.88 NA NA ND(<0.130) ND(<0.130) ND( <0.130) NL)(<0.260) NA 1.800 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 20 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 1.700 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 25 2.4 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 6.700 4.400 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.800 1.200 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0:250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.350 0.470 ND( <0.010) ND(<0.010) N[)(<0.010) ND(<0.250) 40 5.2 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 23.000 ND(<2.500) ND(<0.500) ND(<0.500) NL)(<0.500) ND(<13.000) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) Nl)(<0.010) NA 0.660 0.130 ND(<0.010) ND(<0.010) NL)(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.900 0.077 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.220 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA 0.013 ND(<0.050) ND(<0.010) ND(<0.010) ND(<O.OiO) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) Nl)(<0.0050) ND(<0.010) NA 0.020 ND(<0.050) ND(<0.010) ND(<0.010) NL)(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.021 ND(<0.050) ND(<0.010), ND(<0.010) ND(<0.010) ND(<0.250) 80 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.023 ND(<0.050) ND( <0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) B13-18 5/8/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) NL>(<0.0050) ND(<0.010) NA 0.820 1.600 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.010) 10 3.6 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 42.000 16.000 ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 15 1.3 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 47.000 12.000 ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 20 0.63 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 18.000 4.900 ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 25 0.73 NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 14.000 5.600 ND(<0.250) NL)(<0.250) NL)(<0.250) ND(<6.300) 30 ND(<0.50) NA NA- ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 5.600 3.600 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.590 0.590 ND(<0.010) ND(<0.010) ND( <0.010) ND(<0.250) 40 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.260) NA 2.300 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.180 1.900 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 50 1.1 NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 3.700 ND(<1.300) ND(<0.250) NL)(<0.250) ND(<0.250) ND(<6.300) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.030 0.097 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.005 0.100 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) 6.6 ND(<0.0050) NL)(<0.010) NA 0.540 0.340 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.005 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL)(<0.010) NA 0.012 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.009 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0095 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 7 of 10 Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California 8 ot10 MT.BE:::::::TBA DlYE::::::: ETHE :::•:::::TAME::::::::Etkariol:: i.: Samu a GLAD:::::•. lvIV7.k . G..:: Xkttsl...:::... 8 21:::::.. 0... .......826.........260:::.::..$ 0::::.... A............ N260:::...•..; ae'lli : i:::: a9te >::: i >: id ' k' . •:.:.:... rh' k' :!.::::•: rti ' k :::•::: in ' ::;4: is m' ::•:: iti' k' ::::.:. n ' k .:..i:..: BB -1 1119100 DB -19 5/6/03 5 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND(<0.010) NA ND<5.0 ND( <0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 10 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 8 ND( <0.050) ND( <0.010) ND( <0.010) ND(<0.010) ND( <0.250) 15 ND( <0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND( <0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 20 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) Nll( <0.010) ND( <0.250) 25 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 270 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 30 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 250 2 ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 35 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND(<0.010) NA ND(<0.0050) 0.49 ND( <0.010) ND( <0.010) ND(<0.010) ND( <0.250) 40 ND(<0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND(<0.010) NA 200 1 ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 45 ND(<0.50) NA NA ND( <0.130) ND(<0.130) ND( <0.130) ND( <0.260) NA 1,400 ND( <1.300) ND( <0.250) ND(<0.250) ND(<0.250) ND(<3.600) 50 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 10 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND(<0.250) 55 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 5.0 0.061 ND( <0.010) ND( <0.010) ND(<0.010) ND( <0.250) 60 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 5.3 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 65 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA 9.2 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 6.5 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 75 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 5.1 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 80 ND( <0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 5.3 ND( <0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 8.3 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) BW20 516/03 5 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA ND(<0.0050) ND(<0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND(<0.250) 10 ND(<0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 12 ND( <0.050) ND(<0.010) ND( <0.010) ND(<0.010) ND( <0.250) 15 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA 7.3 ND( <0.050) ND( <0.010) ND(<0.010) ND( <0.010) ND( <0.250) 20 ND( <0.50) NA NA ND(<0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 25 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 15 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 30 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 35 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND( <0.0050) ND(<0.010) NA ND(<0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 40 ND( <0.50) NA NA ND(<0.0050) ND( <0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 45 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA 61 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 50 ND( <030) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 5.9 ND( <0.050) ND( <0.0I0) ND( <0.010) ND(<0.010) ND( <0.250) 55 ND( <0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 60 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND(<0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND(<0.250) 65 ND( <0.50) NA NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 70 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 6.8 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 75 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND( <0.0050) ND(<0.010) NA 5.7 ND(<0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND( <0.250) 80 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) 0.270 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 10 ND <0.050 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) VEW -I 9/25/03 5 ND( <0.50) ND( <5.0) NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) NA 10 ND( <0.50) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.006 ND(<0.050) ND(<0.010) ND( <0.010) ND( <0.010) NA 15 1.0 ND( <5.0) NA ND(<0.130) ND( <0.130) ND( <0.130) ND( <0.260) NA 2.500 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) NA 20 1.5 ND( <5.0) NA ND( <0.130) ND(<0.130) ND( <0.130) ND( <0.260) NA 3.500 ND( <1.300) ND(<0.250) ND( <0.250) ND( <0.250) NA 25 3.6 ND( <5.0) NA Nll( <0.130) ND( <0.130) ND( <0.130) ND( <0.260) NA 11.000 8.400 ND( <0.250) ND( <0.250) ND( <0.250) NA 30 1.1 ND( <5.0) NA ND(<0.130) ND( <0.130) ND( <0.130) ND( <0.260) NA 2.800 ND(<1.300) ND(<0.250) ND( <0.250) ND( <0.250) NA 35 1.0 ND( <5.0) NA ND(<0.130) ND(<0.130) ND( <0.130) ND( <0.260) NA 2.100 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) NA 40 1.0 ND( <5.0) NA ND(<0.130). ND( <0.130) ND( <0.130) ND(<0.260) NA 4.800 ND( <1.300) ND(<0.250) ND( <0.250) ND( <0.250) NA 45 ND( <0.50) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.250 0.480 ND( <0.010) ND( <0.010) ND( <0.010) NA 50 ND(<0.50) ND( <5.0) NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA 0.087 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) NA 55 ND( <0.50) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) 0.210 ND(<0.010) ND( <0.010) ND(<0.010) NA 8 ot10 Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California j- euth WAW : fvIWkk)-: Jflgiw:.:.:.:.:.: Im 1111-1 1/19/00 VEW-2 9/24/03 5 NL(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.063 0.560 ND(<0.010) NL)(<0.010) ND(<0.010) NA 10 4.30 NL)(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 18.000 4.500 ND(<0.010) ND(<0.010) ND(<0.010) NA 15 6.00 ND(<5.0) NA ND( <0.130) ND(<0.130) ND( <0.130) ND(<0.260) NA 12.000 2.200 ND(<0.250) ND(<0.250) ND(<0.250) NA 20 1.60 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 6.500 3.500 ND(<0.010) ND(<0.010) ND(<0.010) NA 25 7.60 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 44.000 4.800 ND(<0.250) ND(<0.250) ND(<0.250) NA 30 0.62 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.800 1.200 ND(<0.010) ND(<0.010) ND(<0.010) NA 35 0.66 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.200 0.940 ND(<0.010) ND(<0.010) ND(<0.010) NA 40 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.410 0.570 ND(<0.010) ND(<0.010) ND(<0.010) NA 45 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL)(<0.010) NA 0.330 0.530 ND(<0.010) ND(<0.010) ND(<0.010) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.960 0.077 ND(<0.010) ND(<0.010) ND(<0.010) NA 55 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.006 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 60 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND <0.050 ND(<0.010) ND(<0.010) ND <0.010) NA VEW-3 9/24/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 10 1.9 Nl)(<5.0) NA ND(<0.0050) NL)(<0.0050) ND(<0.0050) ND(<0.010) NA 6.800 0.150 ND(<0.010) ND(<0.010) ND(<0.010) NA 15 5.7 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 19.000 4.100 ND(<0.010) ND(<0.01.0) ND(<0.010) NA 20 6.2 ND(<5.0) NA ND(<0.0050) Nt)(<0.0050) ND(<0.0050) ND(<0.010) NA 14.000 4.400 ND(<0.010) ND(<0.010) ND(<0.010) NA 25 9:6 ND(<5.0) NA ND(<0.0050) ND(<0.0050) NL)(<0.0050) ND(<0.010) NA 24.000 11.000 ND(<0.010) ND(<0.010) ND(<0.010) NA 30 1.1 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 2.500 4.200 ND(<0.010) ND(<0.010) ND(<0.010) NA 35 6.7 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) NL)(<0.010) NA 0.810 1.800 ND(<0.010) ND(<0.010) N D(<O. 010) NA 40 4.9 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(-50.0050) ND(<0.010) NA 29.000 2.100 ND(<0.010) ND(<0.010) ND(<0.010) NA. 45 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) Ni)(<0.010) NA 0.350 0.350 ND(<0.010) ND(<0.010) ND(<0.010) NA 50 ND(<0.50) NL)(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.020 ND <0.050 ND(<0.010) ND(<0.010) ND(<0.010) NA VENV4 9123/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) N[)(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) NA 10 1.2 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 3.500 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) NA 15 1.3 ND(<5.0) NA ND(<0.130) ND( <0.130) ND(<O. 130) ND(<0.260) NA 20.000 2.100 ND(<0.250) ND(<0.250) ND(<0.250) NA 20 1.5 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.400 3.800 ND(<0.010) ND(<0.010) ND(<0.010) NA 25 7.4 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 3.500 2.100 ND(<0.010) ND(<0.010) ND(<0.010) NA 30 1.1 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 22.000 2.700 ND(<0.010) ND(<0.010) ND(<0.010) NA 35 0.8 ND(<5.0) NA ND(<0.0050) ND(<0.0050) NL)(<0.0050) ND(<0.010) NA 0.610 1.500 ND(<0.010) ND(<0.010) ND(<0.010) NA 40 7.4 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 1.600 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) NA 45 3.70 ND( <5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 17.000 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.650 0.120 ND(<0.010) ND(<0.010) ND(<0.010) NA 55 ND(<0.50) ND(<5.0) NA NL)(<0.0050) NO(<0M50) ND(<0,0050) ND(<0.010) NA 0.016 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 60 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.023 ND(<0.050) ND(<0.010) ND(<O.OiO) ND(<O.OiO) NA 65 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.005 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 9 of io mom= Table 2 Historical Soil Analytical Results 4050 Gosford Road Bakersfield, California NDI• ND - Not Detected NA - Not Analyzed NP- Not Provided Q.9 - Composite Sample 1'1111 -G - Total petroleum hydrocarbons as gasoline TPI I-D -Total petroleum hydrocarbons as diesel MTBE - Methyl-tert butyl ether TBA -Tert-bulyl alcohol RIPE - Di-isopropyl ether IFI'BF - Ethyl -(ert butyl ether TAM F -Tert-ainyl methyl ether MRL is elavated because of matrix interferences and because the sample required diluting 10 of 10 a ... BB-1 1/19/00 WNV-5 9/23/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) NIX<0.0050) ND(<0.0050) ND(<0.010) NA 0.140 4.000 ND(<0.010) ND(<0.010) ND(<0.010) NA 10 6.3 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.0050) ND(<0.260) NA 2.400 8.500 ND(<0.250) ND(<0.250) ND(<0.250) NA 15 8.7 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 29.000 21.000 ND(<0.250) ND(<0.250) ND(<0.250) NA 20 13 ND(<5.0) NA ND(<0,130) ND(<0.130) ND(<0.130) ND(<0.260) NA 46.000 15.000 ND(<0,250) NF)(<0.250) ND(<0.250) NA 25 28 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 85.000 29.000 ND(<0.250) ND(<0.250) ND(<0.250) NA 30 1.5 ND(<5.0) NA ND(<0J30) ND(<0.130) ND(<0.130) ND(<0.260) NA 3.100 3.200 ND(<0.250) ND(<0.250) ND(<0.250) NA 35 1.9 ND(<5.0) NA ND( <0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 5.300 1.800 ND(<0,250) NL)(<0.250) ND(<0.250) NA 40 0.94 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.680 2.400 ND(<0.010) ND(<0.010) ND(<0.010) NA 45 2.0 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 4.400 4.200 ND(<0.250) ND(<0.250) ND(<0.250) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.530 ND(<0.050) ND(<0.010) ND(<0.010) ND( <0.010) NA 55 ND(<0.50) ND(<5.0) NA NIX<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 60 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 65 ND(<0.50) ND(<5.0) NA NL)(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA NDI• ND - Not Detected NA - Not Analyzed NP- Not Provided Q.9 - Composite Sample 1'1111 -G - Total petroleum hydrocarbons as gasoline TPI I-D -Total petroleum hydrocarbons as diesel MTBE - Methyl-tert butyl ether TBA -Tert-bulyl alcohol RIPE - Di-isopropyl ether IFI'BF - Ethyl -(ert butyl ether TAM F -Tert-ainyl methyl ether MRL is elavated because of matrix interferences and because the sample required diluting 10 of 10 M TABLE3 SUMMARY OF SVE STEP TEST DATA (VEW -4A) 4050 Gosford Road Bakersfield, California Sample Date Sample Time Extraction Well (VEW -4A) H2O) Vacuum in of H2O) Vacuum in of Hg) Flow aefm) Flow sefm)* PID Influent Cone. (ppmv; 1.50 NA 1.48 NA 1.41 NA 1.44 NA 15:40 34.0 2.5 40.4 37.0 69012/9/03 12/9/03 15:55 34.0 2.5 40.4 37.0 840 12/9/03 16:10 34.0 2.5 40.4 37.0 870 16:20 74.8 5.5 63.9 52.2 90012/9/03 12/9/03 16:35 74.8 5.5 63.9 52.2 1020 12/9/03 16:50 74.8 5.5 63.9 52.2 1140 12/9/03 17:00 136.1 10.0 90.3 60.1 1230 12/9/03_ 17:15 136.1 10.0 90.3 60.1 1300 12/9/03 17:30 136.1 1 10.0 90.3 60.1 1370 Maximum Step Average 90.3 60.1 OZ 1 COZ 1.0 14.0 1.3 14.4 1.0 13.9 1.0 13.9 0.9 13.0 0.9 r12.60.6 0.9 1.0 Observation Well (VEW -4 Dis. from VEW -4A: 0 ft Pressure H2O) ofVEW -4 1.33 NA 1.50 NA 1.48 NA 1.41 NA 1.44 NA 1.45 NA 1.42 NA 1.38 NA 1.30 NA NA NA Hg - Inches of Mercury 1120 - Inches of Water aefm - actual cubic feet per minute sefm - standard cubic feet per minute ppnw - parts per million by volume NA - Not Applicable positive pressure indicated in bold Flow rate (scfm) = Flow rate (actin) x [Pressure at the gauge (psi) + Pressure atmosphere (psi)] /Pressure atmosphere (psi) Observation Well (VEW -3f Dis. from VEW -4A: 35 ft Vacuum H20) j 4, 0.23 MNANA 0.382 NA 0.588 0.39 0.521 0.45 0.601 0.44 0.588 0.58 0.426 0.62 0.456 0.67 0.492 0.45 0.537 Observation Well (VEW -3B) Dis. from VEW4A: 35 ft Vacuum H20) of VEW -4A) 0.21 0.617 0.13 0.382 0.20 0.588 0.44 0.588 0.48 0.641 0.51 0.682 0.72 0.529 0.70 0.515 0.83 0.610 0.42 0.572 Observation Well (VEW -5A) Dis. from VEW -4A: 43 It Vacuum H2O) of VEW -4A) 0.22 0.647 NA NA NA NA 0.51 0.682 0.57 0.762 0.55 0.735 0.76 0.559 0.80 0.588 0.83 0.610 0.57 0.655 TABLES SUMMARY OF SVE STEP TEST DATA (VEW4A) [Continuedl 4050 Cosford Road Bakersfield, California Sample Date Sample Time Extraction Well (VEW -4A) Observation Well (VEW -5B) Observation Well (YEW -2A) Observation Well (VEW -2B) Dis. from VEW4A: 43 ft Dis. from VEW -4A: 54 ft Dis. from.VEW4A: 54 ft Vacuum in of H2O) Vacuum in of Hg) Flow acfm) Flow scfm)* PID Influent Cone. (ppmV) 02 ( %) CO, M) Pressure Vacuum Pressure I (" 1120) ofVEW -4A) H2O) ofVEW -4A) H2O) of VEW -4A) k7y 3Swk :.1":n! c. .`c.,An. 4,.Ni Y &k\i. yR 94 r.. i.. e.•v r ' kua. F 2i^..' 1@"".. u ? 1 X0.147 i., . .,Y. . ' '::.3.. . .. ..`'rQ '$i +i» wm2 . ri .rfE`.t. f > ..9-y3h:H ,R. ,• a 12/9/03 15:40 34.0 2.5 40.4 37.0 690 1.0 14.0 1.25 NA 0.05 1.07 NA 12/9/03 15:55 34.0 2.5 40.4 1 37.0 840 1.3 14.4 1.42 NA NA NA 1.21 NA 12/9/03 16:10 34.0 2.5 40.4 37.0 870 1.0 13.9 1.39 NA NA NA 1.19 NA 12/9/03 16:20 74.8 5.5 63.9 52.2 900 1.0 13.9 1.34 NA 0.17 0.227 1.15 NA 12/9/03 16:35 74.8 5.5 63.9 52.2 1020 0.9 13.0 1.35 NA 0.24 0.321 1.11 NA 12/9/03 16:50 74.8 5.5 63.9 52.2 1140 0.9 12.6 1.35 NA 0.22 0.294 1.12 NA 1219103 17:00 136.1 10.0 90.3 60.1 1230 0.6 12.6 1.34 NA 0.33 0.243 1.06 NA 12/9/03 17:15 136.1 10.0 90.3 1 60.1 1 1300 1 0.9 12.4 1.28 NA 0.33 0.243 1.05 NA 12/9/03 17:30 136.1 10.0 90.3 60.1 1370 1.0 12.2 1.19 NA 0.40 0.294 0.96 NA Mn[imum Step Avernge 90.3 60.1 NA NA 0.22 0.253 NA NA Notes: lig - Inches of Mercury 1-120 - Inches of Water - acfm - actual cubic feet per minute scfm - standard cubic feet per minute ppmv - parts per million by volume NA - Not Applicable positive pressure indicated in bold Flow rate (scf n) - Flow rate (acfm) z [Pressure at the gauge (psi) + Pressure atmosphere (psi)yPressure atmosphere (psi) TABLE4 SUMMARY OF SVE STEP TEST DATA (VEW -4B) 4050 Gosford Road Bakersfield, California Extraction Well Observation Well (VEW -4 Dis. from VEW4B: 0 ft Pressure 112 )) of VEW -4 @ PID Influent Cone. (ppinv) 0.1 t NA 0.09 NA 0.14 NA 0.10 NA 0.11 NA 0.06 NA 0.00 0.000 0.05 NA 0.00 0.000 8.5 6:0 NA NA Sample Date Sample Time Vacuum in of H2O) Vacuum in of Hg) Flow acfm) Flow scfm)* PID Influent Cone. (ppinv) OZ CO2 0.22 NA 0.23 NA 0.22 NA 0.22 NA 0.18 12/9/03 13:35 34.0 2.5 60.6 55.5 170 8.5 6:0 12/9/03 13:50 34.0 2.5 60.6 55.5 150 8.0 6.3 12/9/03 14:05 34.0 2.5 60.6 55.5 130 8.2 6.1 12/9/03 14:15 68.0 5.0 63.9 53.2 120 8.3 6.1 12/9/03 14:30 68.0 5.0 63.9 53.2 110 8.4 6.2 12/9/03 14:45 68.0 5.0 63.9 53.2 100 8.4 6.3 12/9/03 14:55 129.3 9.5 90.3 61.6 100 9.2 6.2 12/9/03 15:10 129.3 9.5 90.3 61.6 100 8.7 6.5 12/9/03 15:25 129.3 9.5 90.3 61.6 100 8.5 6.5 Aloximum Step Average 90.3 61.6 Notes: lig - Inches ofMercury H2O - Inches of Water acfuo - actual cubic feet per minute scfm - standard cubic feet per minute ppury - parts per million by volume NA - Not Applicable positive pressure indicated in bold Flow rate (scfin) s Flow rate (acfm) x (Pressure at the gauge (psi) + Pressure atmosphere (psi)yPressure atmosphere (psi) Observation Well (VEW -31 Dis. from VEW4B: 35 ft Pressure H2O) /6 of VEW4 0.14 NA 0.10 NA NA NA NA NA I NA Observation Well (VEW -5) Dis. from VEW -413: 43 ft Pressure HZ0) (% of VEW -41 0.18 NA 0.18 NA 0.22 NA 0.21 NA 0.24 NA 0.14 NA 0.10 NA 0.14 NA 0.10 NA NA NA Observation Well (VEW -2A) Dis. from VEW -46: 54 ft Pressure H2O) of VEW46) r {u 0.24 NA 0.22 NA 0.23 NA 0.22 NA 0.22 NA 0.18 NA 0.13 NA 0.17 NA 0.11 NA NA NA TABLE SUMMARY OF SVE STEP TEST DATA (VEW -SA) 4050 Gosford Road Bakersfield, California Extraction Well Observation Well (VEW -5 Dis. from VEW -5A: 0 ft Pressure H2O) ofVEW -5 Flow scfm)* PID Influent Conc. (ppmv) 0.17 NA 0.35 NA 0.50 NA 0.60 NA 0.65 NA 0.71 NA 0.79 NA 0.88 NA 1.00 NA 3.0 11.4 NA NA Sample Date Sample Time Vacuum in of H2O) Vacuum in of Hg) Flow acfm) Flow scfm)* PID Influent Conc. (ppmv) 02 CO, 0.27 NA ai n ».tea y° yn,. is t d.Wx a h.... .s 1`$ s v -a "§..J °.^.Y.:. J fa..»3u1_ .2 :L.a,,A NA 12/9/03 11:25 27.2 2.0 60.6 56.6 821 3.0 11.4 12/9/03 11:40 27.2 2.0 53.5 49.9 904 2.5 11.0 12/9/03 11:55 34.0 2.5 53.5 49.0 929 2.4 11.0' 12/9/03 12:05 68.0 5.0 53.5 44.6 947 2.4 11.0 12/9/03 12:20 74.8 5.5 63.9 52.2 971 2.4 11.6 12/9/03 12:35 74.8 5.5 63.9 52.2 1023 2.3 11.8 12/9/03 12:45 136.1 10.0 63.9 42.6 1163 2.3 12.3 12/9/03 13:00 136.1 10.0 90.3 60.1 NA 2.2 12.9 12/9/03 13:15 136.1 10.0 90.3 60:1 1300 2.2 12.6 Maximum Step Average 81.5 54.3 Notes: Ilg - Inches ofMercury 1120 - Inches of Water acfm -actual cubic feet perminute sefn - standard cubic feet per minute ppnry - parts per million by volume NA - Not Applicable positive pressure indicated in bold 4 Flow rate (scfm) - Flow rate (aefin) x [Pressure at the gauge (psi) + Pressure atmosphere (psi)] /Pressure atmosphere (psi) Observation Well (VEW -21 Dis. from VEW -5A: 39 ft Pressure H2O) ofVEW -5 i#MR M n 0.13 NA 0.27 NA 0.41 NA 0.49 NA 0.53 NA 0.61 NA 0.64 NA 0.65 NA 0.78 NA NA NA Observation Well (VEW41 Dis. from VEW -5A: 43 ft Pressure HO) (% ofVEW -5 0.26 NA 0.39 NA 0.55 NA 0.69 NA 0.78 NA 0.83 NA 0.94 NA 0.98 NA 1 I i,I1 Observation Well (VEW -3B) Dis. from VEW -5A: 54 ft Vacuum 1111,0) (% of VEW -5A) 0.23 0.845 0.22 0.809 0.15 0.441 0.28 0.412 0.36 0.481 0.34 0.454 0.48 0.353 0.57 0.419 0.55 0.404 0.20 0.698 TABLE 6 SUMMARY OF SVE STEP TEST DATA (VEW -513) 4050 Cosford Road Bakersfield, California Sample Date Sample Time Extraction Well (VEW -5B) Observation Well (VEW -5A) Observation Well (VEW -2A) Observation Well (VEW4A) Observation Well (VEW -3A) Dis. from VEW -511: 0 ft Dis. from VEW -511: 39 ft Dis. from VEW -511: 43 ft Dis. from VEW -5B: 54 ft Vacuum in of H2O) Vacuum in of lig) Flow acfm) Flow scfm)* PID Influent Conc. (ppmv) 02 CO2 Vacuum Vacuum Vacuum Vacuum H2O) of VEW -5D) H2O) of VEW -SB) H2O) of VEW -50) H2O) of VEW -511) i'.•!.3 :« t, rY: .::'w_ 1Y; r $ 9a:.•..'515 jb' f d.Y:_ - qg, y.Ja s, .... xx nu,Y.,y » r. •: nr"' ' '4 s;. t;.?_ ,_:a: . `' + t i'f+ : S,+x1 5" Y '` q s, t : ` '.' e. n ' . . IRA ' r• >,. ny. a , ' i' 12/9/03 9:22 t 15.6 8.5 90.3 64.7 188 8.7 6.6 0.18 0.156 0.16 0.138 0.04 0.035 0.00 0.000 12/9/03 9:37 115.6 8.5 90.3 64.7 214 8.9 6.4 0.25 0.216 0.18 0.156 0.08 0.069 0.05 0.043 12/9/03 9:52 115.6 8.5 90.3 1 64.7 212 8.3 6.6 0.24 0.208 0.18 0.156 0.05 0.043 0.04 0.035 12/9/03 10:02 68.0 5.0 78.2 65.1 483 8.9 7.1 0.19 0.279 0.12 0.176 0.04 0.059 0.03 0.044 12/9/03 10:17 68.0 5.0 78.2 65.1 260 8.4 6.7 0.16 0.235 0.12 0.176 0.03 0.044 0.02 0.029 12/9/03 10:32 68.0 5.0 60.6 50.5 262 8.1 7.1 0.17 0.250 0.13 0.191 0.06 0.088 0.04 0.059 12/9/03 10:42 27.2 2.0 49.5 46.2 432 8.0 7.0 0.10 0.368 0.08 0.294 0.01 0.037 0.00 0.000 12/9/03 10:57 27.2 2.0 1 35.0 1 32.7 252 7.3 7.0 0.09 0.331 0.06 0.221 0.01 0.037 0.01 1 0.037 12/9/03 11:12 27.2 2.0 35.0 32.7 271 7.6 7.0 0.00 0.000 0.05 0.184 0.05 0.184 0.05 0.184 Maximum Step Average Maximum Step Average 90.3 64.7 0.173 0.255 0.070 0.233 0.010 0.086 0.005 0.074 Notes: Ilg - Inches of Mercury 1120 - Inches of Water actin - actual cubic feet per minute scrm - standard cubic feet per minute ppmv - parts per million by volume NA - NotApplicable positive pressure indicated in bold Flow rate (scion) = Flow rate (af n) x [Pressure at the gauge (psi) + Pressure atnosphere (psi)pPressure atmosphere (psi) TABLE 7 SUMMARY OF SVE EXTENDED TEST DATA (VEWAA) 4050 Gosford Road Bakersfield, California Sample Date Sample rime Extraction Well (VEWAA) Observation Well (VEWAB ) Observation Well (VEW -3A ) Observation Well VEW -3B) Observation Well (VEW -SA Dis. from VEW4A: 0 It Dis. from VEW4A: 35 It Dis. from VEW4A: 35 It Dis. from VEW4A: 43 It Vacuum in of 1130) Vacuum Inof 11g) Flow acfm) Flow scfm)" PID Influent Cone- (PpmV) O= aMe) CO3 Vacuum Vacuum Vacuum Vacuum II2O) of VEFY-4A) 1120) ofVEW-4A) II 0) ofVEWAA) 1110) of YEW-4A) 2`n ZkJu.s:..:.4. p r .. - 1.'T:.4. po'azn.a y'>; 4, t.. ln d_r' HYY`EiL?. ds.1 $TlS: ".. Ccat .r '.Yc rSi t t ss,. wr:,tf, r ":'.5},"` b 'i4.,r.3L..y.,.iu... 3''i'. a,._v.,. '.A'. fw yi:`.YcuY 4. 3,} i..,r''sARhi dt %°°°. e•,_ Rr.'.;v4 t„ j eYAt" 12/09/03 17:40 136.1 10.0 90.3 60.1 1370 1_3 12.1 1.24 0.911 0.68 0.500 0.82 0.603 0.87 0.639 12/09/03 19:40 1 136.1 10.0 90.3 60.1 1220 3.3 1 10.5 0.95 0.698 0.63 0.463 0.84 0.617 0.85 0.625 12/09/03 21:40 136.1 10.0 90.3 60.1 1,050 4.3 9.6 0.80 0.588 0.65 0.478 0.89 0.654 0.83 0.610 12/10/03 7:40 122.4 9.0 63.9 44.7 590 8.7 7.2 0.48 0.392 0.79 0.645 1.23 1.005 1.04 0.849 12/10/03 17:40 136.1 10.0 101.0 67.3 470 10.2 8.4 0.25 0.184 0.76 0.559 1.06 0.779 1.00 0.735 12/11/03 7:40 122.4 9.0 63.9 44.7 330 11.7 5.4 0.20 0.163 0.76 0.621 1.10 0.898 1.02 0.833 12/11/03 13:40 129.3 9.5 101.0 68.9 300 11.7 5.8 0.27 0.209 1 0.75 0.580 1.05 0.812 0.96 0.743 12/12/03 7:40 115.6 8.5 63.9 45.8 250 14.5 3.6 1.85 1.600 0.83 0.718 1.51- 1.306 1.24 1.072 12/12/03 13:00 129.3 9.5 101.0 68.9 240 13.7 4.4 0.74 0.573 0.76 0.588 1.23 0.952 1.04 0.805 Av 85.1 57.8 1.02 0.855 0.73 1 0.572 1.08 0.847 0.98 1 0.768 - Notes: lig - NO. of Mercury 1120 - 1nchaofWma adm - actual cubic feet per minute scfm - standard cubic feet per minute pprnv - pansper million by volume positive pressure indicated in bold NA - Not Applicable Flow rate (scfm) - Flow rate (acfm) a [Pressure at thegauge (psi) + Presureelmosphere (p6)yP -.n, ntmmpbu (psi) M M M M M M TABLE SUMMARY OF SVE EXTENDED TEST DATA (VEW4A) Continued] 40.50 Gosford Road Bakersfield, California Extraction Well (VEW 4A) Observation Well (VEW -5B Observation Well (VEW -2A ) Observation Well (VEW -2B) Observation Well (VEW -IA) Observation Well (VEW -IB) Dis. from VEW4A: 43 It Dis. from VEW4A: 54 It Dis. from VEW4A: 54 It Dis. from VEW4A: 74 It Dis. from VEW4A: 74 It Sample Dnle Sample Time Vacuum In of 1110) Vacuum in of llg) Flow acfm) Flow scfm)* PID Influent Cone. (ppmv) Or CO= Vacuum Vacuum Vacuum Vacuum Vacuum 1120) ofVE1114A) 11 =0) ofVEW4A) 11 O) ofVEW4A) 1120) of VEW4A) 11 =0) of VEW 4A) ve : ;i ez2.F,i.'.' car, 3r'.b'...:"a1 IS: t .s'i".+ '. a;,...,., 41U $: f aft: 1» x . :s g Y.41 i.a35n dt E.;cn.:.. w. aiI5`a..'i . t SE.. ._,''.,z w 3ANA12/09/03 17:40 136.1 10.0 90.3 60.1 1370 1.3 12.1 1.14 0.838 0.43 0.316 0.91 0.669 NA NA NA 12/09/03 19:40 136.1 10.0 90.3 60.1 1220 3.3 10.5 0.90 0.662 0.43 0.316 0.71 0.522 NA NA NA NA 12/09/03 21:40 136.1 10.0 90.3 60.1 1,050 4.3 9.6 0.72 0.529 0.45 0.331 0.50 0.368 NA NA NA NA 12/10/03 7:40 122.4 9.0 63.9 44.7 1 590 8.7 7.2 0.48 0.392 0.62 0.506 0.55 0.449 NA NA NA NA 12/10/03 17:40 1 136.1 10.0 101.0 67.3 470 10.2 8.4 0.16 0.118 0.57 0.419 0.05 0.037 NA NA NA NA 12/11/03 7:40 122.4 9.0 63.9 44.7 330 11.7 5.4 0.16 0.131 0.55 0.449 0.07 0.057 0.52 0.425 0.00 0.000 12/11/03 13:40 129.3 9.5 101.0 68.9 300 11.7 5.8 0.23 0.178 0.53 0.410 0.10 0.077 0.45 0.348 0.09 0.030 12/17103- 7:40 115.6 8.5 63.9 45.8 250 14.5 3.6 1.76 1.522 0.84 0.726 1.64 1.418 0.83 0.718 1.85 0.740 12/12/03 13:00 129.3 9.5 101.0 68.9 240 13.7 4.4 0.68 0.526 0.65 0.503 0.74 0.573 0.60 0.464 0.71 0.296 Avg 85.1 57.8 0.97 0.813 0.56 0.442 1 0.98 0.813 0.60 0.489 0.85 0.345 Notes: Hg - Inches of Mercury H2O - Inches of water acfm - actualcubic feet per minute scfm - stenderd cubic fen per minute ppmv - parts permillion byvolume positivepressureindicated in bold NA - Not Applicable Flow rate (scfm) - Flow rare (edm) x [Pressure at the gauge (psi) + Pressureatmosphce (psi)VPressure w-sph- (psi) TABLE SUMMARY OF SVE ANALYTICAL DATA (EPA TO-3 and,ro-i5) 4050 Gosford Road Bakersfield, California C85-1021Shaw\SVE\Tables 3-10 and Figures 4 -9 -Newt Page 1 Table 8- SVE System Analytical INFLUENT Sample Benzene Toluene Ethyl Xylenes TBA DIPE ETBEETBE TAME Date Sample ID T Hg MTBE inni/dd/yy) PP-) jug/I]* ppru) PP-) PPRI) ppni) Pp-) jug/11 PP-) m m m) Za E-S 41- S, Eli, Mh- 12/9/03 VEW-513 Step Start 296 1,213 ND<0.040 0.046 ND<0.040 0.070<0.080 67 240 15.0 ND<0.160 ND<O. 160 ND<O. 160 12/9/03 VEW-5B Step End 456 1,869 ND<0.063 0.065 ND<0.063 0.100 <0.130 110 390 10.0 ND<0.250 ND<0.250 ND<0.250 12/9/03 VEW-5A Step Start 12,300 50,410 7.40 2.40 6.40 33.10 4,700 17,000 60.0 ND<7.00 ND<7.00 ND<7.00 12/9/03 VEW-413 Step Start 134 549 ND<0.018 0.043 0.054 0.295 75 270 13.0 ND<0.070 ND<0.07 ND<0.070 12/9/03 VEW-4B Step End 62 254 ND<0.0075 0;024 0.025 0.136 33 120 12.0 ND<0.030 ND<0.030 ND<0.030 12/9/03 VEW-4A Step Start 2,280 9,344 ND<0.330 ND<0.330 ND<0.330 0.340<0.650 2,000 7,200 65.0 ND<1.300 ND<1.300 ND<1.300 12/9/03 VEWAA Ext Start 5,680. 23,279 0.830 ND<0.750 ND<0.750 1.90 3,800 14,000 39.0 ND<3.00 ND<3.00 ND<3.00 12111/03 VEW-4A Ext Mid Pt 1,100 4,508 1.00 0.95 0.86 5.70 1 1,600 1 5,900 17.0 ND<0.650 2.90 ND<0.650 12/12/03 VEW-4A Ext End' 798 3,270 0.77 0.84 0.68 4.35 470 1,700 3.20 ND<0.440 ND<0.440 ND<0.440 Extended Test Average, 2,526 1 10,352 1,957 7,200 TPHg = Total petroleum hydrocarbons as gasoline MTBE = Methyl tert-butyl ether DIPE = Di-isopropyl Ether ETBF, = Ethyl tert-butyl ether TAME = tert-Amyl methyl ether TBA = terl-Butyl alcohol ppmv - parts per million be volume ug/l - micrograms per liter Calculated using following formula with an average molecular weight for gasoline of 100 g/mole TPHg Concentration (ug/1) = TPHg concentration (ppmv) x 10 -6 x 100 g/mole x mole/24.4 I x 106 Ug/g C85-1021Shaw\SVE\Tables 3-10 and Figures 4 -9 -Newt Page 1 Table 8- SVE System Analytical m = = m m m = m m m m m m m = m m = m TABLE SUMMARY OF SVE ANALYTICAL DATA (ASTM D-1946) 4050 Gosford Road Bakersfield, California INFLUENT Sample Date Sample I-D 0, N2 CH, CO CO2 min/dd/yy) 12/9/2003 VEW-513 Step Start 5.5 82.9 ND ND 11.5 12/9/2003 VEW-513 Step End 7.0 82.8 ND ND 10.2 12/9/2003 VEW-5A Step Start 2.6 82.4 ND ND 15.0 12/9/2003 VEW-413 Step Start 10.3 82.1 ND ND 7.6 12/9/2602 VEW-4B Step End 10.7 82.3 ND ND 7.0 12/9/2003 VEW-4A Step Start 2.8 81.5 ND ND 15.7 12/9/2003 VEW-4A Ext Start 3.7 81.2 ND ND 15.1 12/11/2003 VEW-4A Ext Mid Pt 14.1 77.9 ND ND 8.0 12/12/2003 VEW-4A Ext End 1,5.6 77.5 ND ND 6.9 Abbreviations 02 = Oxygen Notes* N2 = Nitrogen CF14 = Methane CO = Carbon Monoxide CO2 = Carbon Dioxide w w w w iw ® w w w wi w w w w w w ww TABLE 10 SOIL VAPOR MASS REMOVAL RATES 4050 Gosford Road Bakersfield, California MTRE Mass Removal Calculation - Extended Test VEWAA Hours of Operation hr Average Influent Cone. ug/1) Average Flow Rate (scfm ) Conversion Factor Mass Removed (lb) Mass Removal Rate lb /hr ) Mass Removal Rate Ib /da 67.0 7,200 57.8 3.75E -06 104.6 1.6 37.5 IZa.,.b..' TPHg Mass Removal Calculation - Extended Test VEWAA Hours of Operation hr Average Influent Cone. ug/1) Average Flowrate scfm Conversion Factor Mass Removed (lb) Mass Removal Rate lb/hr ) Mass Removal Rate lb/day) 67.0 10,352 57.8 3.75E-06 150.4 2.2 53.9 Mass removal (lbs) = influent concentration (ug /1) x flowrate (scfm) x hours of operation (hr.) x 3.75E -06 Abbreviations & Notes_ MTBE = Metliyl tert -butyl ether TPHg = Total petroleum hydrocarbons as gasoline ug /1= micrograms per liter - scfin - standard cubic feet per minute lb/hr - pounds per hour lb/day - pounds per day ft - cubic feet FIGURES Server \khm_ data \Oients\_Shell\_Shell Sites \4 \4050 Gostord\2003- 12- )DL_SVE PlotTestVIGURE 2(4050)_SVE WELL LOCATION t4PP.dwg, Model, 1/20/2004 4:30:07 PM Ou7OtQQ. U— — 0m1 7 az I I I I 0 Q O r' 0 ry O Li- U) O CD I I I I I I I CAR WASH I Ua CANOPY F ¢BB -6 ¢B -5 P -4BB -200 I O I O D— I I • BB -19 I L B -10 I VEW -5AIVEW -5B O VEW -4AIIP -3 VEW -4B I STATION I 1 PLANTER BUILDING i BB- 9BB 18 B13U21 6 7 I P -2 -4 I P- a -WS10a i,, 1 BB- 2 P -2 -8 I I 0) / , P -2 -10 P- 1 -W510 i I / P -2 -20 BB -7 D- 1 -NS10 IVEW -2A VEW-,rEr I UST (TIP) 20 BB_¢•BB -1 ,' ' VEW -3AO - I BB -13 / L -- - - { -r1 BS -11 i' • D- 1 -WS10 BB -3¢ BB -16 BB-4 10 BB -8 — VEW -3B I l\ P- 1 -E518 VEW -1A BB -14 PLANTER - - VEW -18 - - - - - - DISPENSER' ISLAND TMP) WHITE LANE Server \khm_data \Cllent5L5heIILShell Sltes \4 \4050Gosford\2D03-12- )0( SVE Pilot Test\FIGURE 3(4050)_5FFE NAP WITH HISTORICAL SAMPLING LOCATIONS.dwg, Model, 1120/2004 4:38:52 PM N W O E S VEW -1A ® DUAL NESTED VAPOR WELL LOCATION AN DESIGNATION BB-7$ HISTORICAL SOIL BORING LOCATION WGR SOUTHWEST INC. 06/20/02- 06/21/02) B13-1 ¢ HISTORICAL SOIL BORING LOCATION PACIFIC ENVIRONMENTAL GROUP 01/19/00) D -1 3 HISTORICAL SOIL SAMPLING LOCATION IT CORPORATION 07/05/01 dt 07/17/01) BB -13 • SOIL BORING LOCATION AND DESIGNATION WGR SOUTHWEST INC.) 0 30 60 SCALE IN FEET Delta iENVIRONMENTAL A CONSULTANTS INC. SHELL OIL PRODUCTS US SHELL SERVICE STATION BAKERSFIELD, CALIFORNIA FIGURE 3 SITE MAP WITH HISTORICAL SAMPLING LOCATIONS 4050 GOSFORD ROAD BAKERSFIELD, CALIFORNIA Figure 4 Flow Rate vs. Vacuum during Step Tests 4050 Gosford Road Bakersfield, California 100.0 UEW SAS690.0 80.0 U_ E 46' 70.0 wi`m S 60.0 r AU Y fi w 50.0 _' ASS n° , L., u,`»adit4" 4': y rs ' 0 40.0 vt ti d 30.0_. k 20.0 10 Y.: $ bl 3 W . a iG , rc ti", s 0n F . , S ip' . _ u; x.'_ " , ` . " 0.0 2.0 4.0 6.0 8.0 10.0 12.0 Vacuum (in Hg) Figure 5 PID Concentration vs. Operating Time (VEW -4A) 4050 Gosford Road Bakersfield, California 1600 -- 1400 a w. 1200 gam' s n O F+ y• H.y ry C 1000 L+ 800 xY.? b p t 4nb h° ?. tTr• N r+ - rr a . a v, •° _ ' 4 tr, Y§ m..2^ r C . uc" + „ :p ', i ,, yam. ' ^> C 600_ C ' k. + a?•u° "• t`,, '$ Wy ,,'.., " ".... ' 6 . _ : ,.V.,. q=r ^' 42' ... ;t' u ,r. %dx. 400 _ W W a Vin: ,,.` ai . , " "? °, , • ` ; ' VJ ":'7 h..v .M "P. 1e31AIe.•,3 r f, .k i :.. ' ' _ 0 "g...- _ 'u emu' : _ - :Y i.,' • 5i. ,b"W z'd• .f+..•.i4io. - _ ";. •' ,?. 0 10 20 30 40 50 60 70 80 Operating Time (hrs) M fib ® ® ® M r M M = = M 1111• llfi• M M M M M Figure 6 Influent Concentration vs. Operating Time (VEW -4A) 4050 Gosford Road Bakersfield, California 24,000 »' • , , , 21,000 18,000 Y \ 11% t — E- TPFig $ r O € •1P ter" f \ n t} •, hP k' Z '' °` 1. v F :' fit', YA•, " 15,000 y CD u, -,a as , ,a & ,s - -- r :.'dr i" . ' 5• s : , '' a m 'a' ' C 12,000 S . , Yr •w-. !. a `r.•wu .y.. ta$ \ ffi .r A 4 n ., 9` ' . a -' A ";v.. ,ti . Z a 4 'TCL9,000 4 It r W m 6,000 y q($ y y W(,, TV 3,000sr u a TV K `' 0 10 20 30 40 50 60 Operating Time (minutes) 1000 100 d Q Q Q 10Q W W V K W Lt- AC Wv V a 0.1 0.01 0 Figure 7, Radius of Influence Determination Plot Step Test (VEW -4A) 4050 Gosford Road Bakersfield, California 10 20 v 30 40 50 60 70 Radial Distance from SVE Well VEW -4A, ft wr:d 1a : >, :..: y: ; _ „ =. r sK s- gyp_ L. 4 .An pOy k V a W a n# p lwlwo.- " ." e ae L 11 StepgTest RO1 V.E 4A v "e ':..k. Expon, W 4StepTestRO1 (VE-,A)) Z4, < tg 3 i•'`-' -'; - a a t y U' d ^`•ail.:., c c.Ya• 's. Aa'n a, ,$fie M k' +ems ." d" aF q, vA Y "*' p` ey"`4W0 n`° f P' "^^ ^'" 'kx fit. 4•y_.R''„'•'L,SCi E, s 444 H S. t - _ i Y . r.. a•. ; -, a - e a' VEW 3A{ VEW5Aw: 'x` gx.'"° 1% Normalized Vacuumkz A,_. a ,L.'< E 7-171 aw^rr:- .r ..%3• .14- 4S a.,, 4 s y.F ". 25 ft. Radius Of Influence'` @ 1% Normalized Vacuum% y. •t - X.. aY ..c 414 . Mwaa W s ,a ;.." " x .df -. wi`f .:. c4 Y ti. - pia`'. •A. i.1$« iaa v ^+" r. y`e. y.. 7 ir , @: 4. drn. `... ' r Hil.. r 10 20 v 30 40 50 60 70 Radial Distance from SVE Well VEW -4A, ft M M M M M M® M M M M M M ii• M M it ii• M Figure 8 Radius of Influence Determination Plot (VEW -4A Extended Test to Shallow Wells) 4050 Gosford Road Bakersfield, California 1000 w "r °,. i,N1. JkY»,57.- .ti ,.,' -$V aa! '- - ' }:i ' r • - ,.. "1*'*K.: - , ,. ° r w. a = " . .«, st d" +'' a 4 L V 10 S ';S3fi ',. o.( sOgYY2 r. B ' r- f f , . '_ ^ '. " Q h ; ti^ ti •. ry ' . aa d T S. va, 5g} ' t ,". + x4 : v', .- . $. ' - . v, r. vt . r. ly=: , t:` k:`-. ,- p1 f ti s' 1 1" - _ ' T - -,- i, - n u ' N ..` " . x . , w - + ., 9,, $ x ^ Y . ": l. . v .,.'' a 4 ' w„ k- 5. + .. p : , ^ " . .&.` a x.. ; d..+' s l, a F ' . •. , - w +. .:'=' 1 + R 1• '. iY. M °, My v.` SaS ,* '• xV. t .,;.. r .. „. ' y" ^ Y „ , • '... " 4. 4y. '.- t EMY .,M ' . t' ,' y F C I s - . _-- .%+ Y . 4a” + 0. y 1 P ' . k y_ .° . 7xi' '- k . 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' Yx i i . ' b °: t . s" n' ' uPia ,+ Ri y V . h ' L , Y a S : , , ` . ' k 2 yr w, lnT H yq F _ .': i k, 4. h s r , t, ,.'- ' . . <. w" . iW .- '" M r" f ,. _ . N t _ ' .:- : , J ' .• . t . . . a P" p - "i v i ti 1R"-.Zh , rt4u l S d p rO aw . t7 CF ' Vi . • ¢ - i s . ' : - 9 y , l.` s V ' .- . ' . = AM i i Y` t, re? _ Y.: o • ` : - E . v" Y . Y " . 3 « s$ d sbExUntled4e1VatonT- A 100 alsaoal"'.' NZ-1X., " l ft CL Me- B - l I W w C VEW 3 0 1 VM 7 a V 1 11LU CD All, EWx2A' lW4 a 0.1 , p. •. yh.^ f t 2 i a- ty4 4{ ` t ' ia r. . " S` l• A ' . a l•"- .o .. n. E. i ! r ? w tti nN.' : ' o v. . n. Er.' , ` ° d. A h31s+ k ` F W . r Y. n• rt p. ' 7l 4 4 f U ga 432W0.01 0 10 20 30 40 50 60 70 yAT Y t B84 # d gt . . f 0 Radial Distance from SVE Well VEW -4A, ft Figure 9 Radius of Influence Determination Plot (YEW -4A Extended Test to Deep Wells) 4050 Gosford Road Bakersfield, California 1000 100 E 7 77v o. 10 C. Q Q W d 0 1 U IW O m ID 0.1 0.01 0 10 20 30 40 50 60 70 80 Radial Distance from SVE Well VEW -4A, ft S.._S Ci.a.' s. c% 'a '— .f . :'.:.: &.a - .&e4. °' - .' N- U, .' . -'Y • v. 'S' 95i. iFRGW .Rt? -3't aY"8:.'R'. "%•E!s- t'' : ,. °"...'"+,r.:Y«a••a'§ -^Tf" '.1 '4,t'a' i1=a ':i .aw.,.h..e.. ..+....k;.a_`a;. '. wa.aq '0'' 3'. .'' .,_..,., ., 2 Rn.:. aFS 68661? wrEztendedTestROI(sVEVV A" v ^: 6070etino uel s) icw it n Eip (Ex`BnBd TeSt RO,I {EVE = 4 1't0 w v'"t," "'. ,. deep observat on .wells))`°.w @'N `.p "-i. 'YO'S '' : -., "V °'- Y.. M!a`9'°YC` "NwR ei'•C!q aid° •vf• ^• it - N. ..X .C.. A'L` " - X. Cy` i 'x 3:_suD v tro`" V. s 3t._• .{0 . g:.k'. _: - s'a: .: ''. -. ''`_ _. . - Y7m'P.. ` -. .h_ '' 9 r:. .: x'. '1F. 'i'". 4 d. .. ? _ ,' `r.:al. Y K 14 - ` 1. , ' A - 'J 'K' " '3i0._. `iY .. 3El!' ' .L^ ~ jk„ • :eH.. M' " ".'R•''.p :$sld,r,ae F.af ^2'u'1i*dr •y,:a_ +•. '` v^a'''a ,; t • r s. g x s - .k v 4 -. Yt "k ' •c 't W`ae a. K' -. a4x. R, d t N •: .r 51 . i "i Tc'A 1; _ fx, "N R'F "'+F `$_•LaP 53 i;. ,• a " . .. ' -yH m:. 4 . f.:'. Y ' ' `•iYE'. $ `* - . i `T°"!'F a4iY a' 3x D Pn + i4'`j• d L? '[ 4 • A Y aM rqj ?v.:.¢•( y 4y' ".&4` Y' fPl S`i• 1•' t :k. 'U' S ''P ke^ ke# .q}. .m y''*t' a.6 S'y, k ,f 3.•k' +o-" "'R{ti 'a'."V Y'.'"i+' kt ,d d a 4 ,.y.&• 'F'µ vb b' i ,[` f `rq i Fl $ r9 t^ yY .... y -.Rnv. a.. a K l aAi 'a+ &..a- A , v b ! "'7 a '3. . . p.' 'p -1F i p ^.'. rp a• •i . M 2@« m Er'ti' '' &t "ik. 8. 1S Ai fiR 4. `i s!x sf y y H. w -: -,.[ .,..,. . ...y ` '., '' A+ F. +a«•,g. 4r , B§`. '" „dL a• jg p• 1/ yE1 YIl =2B ''".., iA • i.s ke`T.^. e. '}.k t' k P: ' ..it. •3f,.y i: 3w °' #° W F•]' $ $'” "'rev' C -b "Y R.t •'K.i rii,i. n w11- •'vw.p A'. -r- .:.,°' s k `"" 1E • . . i f r d. ^' a {{ ; 1% Normalized Vacuum t .• m ,. ,. ".. . _: m ''— r -.. d ' s _4,,.° - -`.'y ft' ''$r^ " '°"*'`•:'1 d^°``f. `. Pe JLM z y/ vim. 1's6ir -•15n' p.. .kv .S z 33 ft. Radius Of Influence r @ 1% Normalized Vacuum e #, , t . ,• -.. x. q, f .w, $. °— a.m•.L . a.. . Sa ,.. a',..4c' :'"'' E S&+,t y E: " r2 a ai.1'a`a •, 1000 1= 100 U co W Q Q. Q 10m W 1 O v VM w 4- c N UV EL 0.1 0.01 0 Figure 10 Radius of Influence Determination Plot Step Test (VIEW-513) 4050 Gosford Road Bakersfield, California 10 20 30 40 50 60 70 Radial Distance from SVE Well VEW -513, ft r- .. ry, fi E Y ^ ir µ y"'R' 'Ia:% a.. e " " i. r sN ,£ , a R ` .? S , Y '. r It iE •^.^9 '' A 1 1 >S`tep Tesh°ROI ( F, Fr. 3 g. >,.:'.4 % ..fin,. ... ds, •. 'A"' i, ! 6Xponr(Step lest 3PR i '', i ,w M, J% z_,, da -. w z v qq mw' " Y a 1Ra' Q- L. 4{ Wm - p ' S - .a. L'_ Q M r iti I' dz..m*J' a v p 4b.Cd'gPA 4v .: n . `: a?4 x" n _.,rno71-4-4 X'11 11_ a_ r.•... 4 fix z g F L i t 1r , ' x` ' Y ' ra - G w r% a M 3 1 2t= .L s•. r 1% Normalized Vacuum p V I YY.Y..S.rC`, .._,i pyre.. e,'.i.@'f'a.r: -w y i 5 41i: %8'J 3• roS ... v "..J,YF! 5+r?Y' + '4 bi wt$'¢. f rk y f 4z 11 ft. Radius Of Influence Fr @ 1% Normalized Vacuumn_ a g LS +. < Y h. :... v :, VEW 3A N P r 1" ='LN -' 4A.TN'.de 9.. .L2:- .` ..a . W' h YHYN 61 M SC. r' 1b itib.- '.Sr '.hw.vn; .w s.i .Qs', rh' "!, r}r ..- ` .t.. r4 1`' ...,.. rw: .. S Cd9k - ".' b.. y;.. fpm,»,•' r "'44, F ap a -: R T 10 20 30 40 50 60 70 Radial Distance from SVE Well VEW -513, ft APPENDIX A CBFD LETTER DATED DECEMBER 2, 2003 mpelta Environmental Consultants, Inc. Solving environment- related business problems worldwide 911 South Primrose Avenue • Suite K _ Monrovia, California 91016 USA 626.256.6662 800.477.7411 Fax 626.256.6263 December 2, 2003 Delta Project No. PA4050G -1 Mr. Howard Wines III City ofBakersfield Fire Department Environmental Services 1715. Chester Avenue, 3'd Floor Bakersfield, CA 93301 Re: Confirmation of Verbal Approval: Work Plan for Soil Vapor Extraction Pilot Test Texaco Service Station 4050'Gosford Road Bakersfield, California Dear Mr. Wines' www. deltaenv. com Delta Environmental Consultants, Inc. ( DELTA) [Formerly KHM Environmental Management, Inc. (K K], on behalf of Equilon Enterprises, LLC dba Shell Oil Products US (SHELL), submits this Confirmation ofVerbal Approval: WorkPlanfor Soil Vapor Extraction Pilot Test for the site referenced above (Figure 1). Mr. Howard Wines of the City of Bakersfield Fire Department verbally approved Delta's WorkPlan for Soil VaP. or Extraction Pilot Test dated November 25, 2003 during a telephone conversation with Peter Shair ofDELTA and Howard Wines on December 1., 2003. Delta has scheduled the pilot test to begin. Monday, December 8, 2003. Should you have any questions or comments regarding the upcoming activities, please contact Mr. Bradley Clark DELTA) at (626) 256 -6662 or Mr: Anthony Palagyi (SHELL) at (425) 377 -8530. Sincerely, Delta Environmental Consultants, Inc. Peter Shair Project Geologist I . cc: Bradley E. Clark, S error Project Engineer Mr. Anthony Palag3d - Shell Oil Products US A —b- of lk6n.ogen' APPENDix B SVE WELL BORING LOGS BORING LOG Drill Rig: CME 85 Date Drilled: 6/21/02 Logged By: Boring Dia: 4 Inches Boring Number: BB-7 Ryan Nunneley E M C0 Blow Completion Counts Depth Feet Lithology Description Concrete Sand - medium brown, fine grained, poorly graded; slightly micaceous, slightly moist, no odor 10 -10-14 5 Clay - dark brown, very moist, no odor . 8 -12 -13 10 Clayey Silt - reddish brown, trace fine grained sand, moderately 10-15-17 15 moist, no odor Clay - dark reddish gray, trace medium grained sand, very 1416 -20 20 moist, no odor Sandy Silt, light reddish gray, fine grained sand, poorly graded, 10-16 -24 25 slightly moist, no odor Sand - light/ gray, very fine fine grained, poorly graded, slightly 1418 -22 30 micaceous, slightly moist, no odor 11 -1834 35 and - lightl gray, very fine-fine grained, poorly graded, slightly micaceous, slightly moist, slight odor r Sand - reddish brown, very fine -fine grained sand, poorly 17-26-35 40 graded, very moist, slight odor Sift - greenish gray, very sandy, medium grained sand, slightly 18 -2432 45 clayey, moderately moist, no odor 17 -72_27 50 Sand- dark reddish brown, very fine-fineffine grained, poorly — graded, slightly silty, slightly micaceous, very moist, no odor Sand - grayish brown, very fine -fine grained, poorly graded, 8-17-22 55 slighly clayey, slightly micaceous, very moist, no odor gai en - - -g -- - - - - -- Sand light brown, course-fine rd well graded, 12-16-33 fi0 moderately moist, no odor 65 Completion Notes: Site: Backfilled boring with bentonite slurry. Surface patch to match existing concrete. TeXaCO Service StatlOn 4050 Gosford Road Bakersfield, CA Project No.: 423.EQL.00 Page 1 N\ V G1tom. BORING LOG Drill Rig: CME 85. Date Drilled: 6/20/02 Logged By: na knw atC, ganc. Boring Dia: 4 Inches Boring Number: BB -8 Ryan Nunneley E CU c Blow Completion Depth Counts Feet Lithology Description Concrete Sandy Sift - medium brown, fine grained sand, poorly graded, slightly moist, no odor, 0 ppm 5 -12 -11 5 Sift dark brown, slightly clayey, slightly clayey, slightly moist, 7-11-15 10 no odor, 0 ppm Sandy Silt - medium brown, very fine grained sand, poorly 10-13-22 15 graded, moderately moist, no odor, 0 ppm Sand - light reddish gray, very fine -fine grained sand, poorly — 13-19-25 20 graded, slightly moist, moderate odor, 50 ppm Sand - fight reddish gray, very fine -fine grained sand, poorly 16-30-33 25 graded, slightly moist, strong odor, 150 ppm Sand - light gray, veryfine grained, poorly graded, slightly — 20-21-33 30 moist, strong odor, 450 ppm Sand - light gray, very fine grained, poorly graded, moderately 19-24-32 35 moist, no odor, 0 ppm Clayey Sift - dark reddish brown, slightly micaceous, very moist, 21-27-35 40 moderate odor; -140 ppm Clayey Silt - dark brown, very moist, no odor, 0 ppm 12 -12 -28 45 Sandy Sift - medium brown, medium grained sand, poorly 22 -32 -38 50 graded, very moist, no odor, 0 ppm Sand - light reddish brown, very fine- medium grained sand, well 1 o-1 7-3b 55 graded, slightly moist, no odor, 0 ppm 7 60 Sand -light gray, fine course grained, well graded, very moist, no odor, 0 ppm 65 Completion Notes: Site: Backfilled boring with bentonite slung. Surface patch to match e)dsting concrete. Texaco Service Station 4050 Gosford Road Bakersfield, CA Project No.: 423.EQL.00 Page 1 1 C BARING LOG Drill Rig: CME 85 Date Drilled: 6120/02 Logged By: 011i''Il FrP i gYdG Boring Dia: 4 Inches Boring Number. BB -9 Ryan Nunneley E M vy Blow Completion Depth Counts Feet Lithology Description Concrete Sand - dark brown, fine grained, poorly graded, very moist, slight odor, 50 ppm 9 -11 -17 5 Gay -dark brown, slightly silty, very moist, moderate odor, 65 7-8-14 10 PPM Sift - dark brown, Eiiightly clayey, moderately moist, strong odor, 10 -17 -20 15 1,50 ppm Sandy Sift - brownish red, very fine -fine grained sand, poorly 10-14-26 20 graded, very moist, strong odor, 430 ppm Sand -fight reddish gray, fine grained, well graded, moderately 10-10-19 25 moist, strong odor, 500 ppm Sand - light gray, very fine - medium grained, well graded, 11A 7-40 30 slightly moist, strong odor, 450 ppm Sand - fight gray, very fine-medium grained, well graded, 18 19-22 35 slightly moist strong odor, 480 ppm Sand - light gray, very fine- mediumggrained, well graded, 10 -22 -30 40 sfightly moist, moderate odor, 50 ppm Sand - dark reddish gray, fine- medium grained, well graded, 12 -19-36 45 slightly wet, moderate odor, 50 pprrr Sandy Clay = reddish brown, fne grained sand, poorly graded, 11-20-25 50 slightly moist, no odor, 0 ppm 12- 19-24 55 Sand - light reddish gray, fine- medium grained, poorly graded, slightly moist, no odor, 0 ppm Sand -light gray,fine- course grained, well graded, trace gravel 14-29 36 60 to 3/4 ", slightly moist, no odor 0 ppm 65. 1.1 -11-40 9:.:• 9 ":o ..9 .a v:':::: 9:: Silty Sand - medium brown, fine grained sand, poorly graded, slightly micaceous, moderately moist, no odor, 0 ppm Completion Notes: Site: Backfilled boring with bentonite slurry. Surface patch to match e)asting concrete. Texaco Service Station 4050 Gosf&d Road Bakersfield, CA Project No.: 423.EQL.00 Page 1F 1 1 1 1 1 1 1 1 1 i 1 WGIR- BORING LOG Drill Rig: CME 85 Date Drilled: 6120/02 Logged By: ousd"JfawesC, Iabc. Boring Dia: 4 Inches Boring Number: BB-10 Ryan Nunneley- E Blow Completion Depth Counts Feet Lithology Description Concrete Silt - medium brown, slightly sandy, finegrainded sand, poorly graded, slightly moist, no odor, 10 ppm 10 -10-12 5 Silty Clay - dark brown, very moist, no odor, 0 ppm 5-6-12 10 Sitt - reddish brown, slightly clayey, slightly moist, no odor, 0 6 8-11 15 PPM Sand -light reddish gray, fne grained, poorly graded, slightly 10-12-18 20 silty, slightly moist, no odor, 0 ppm Clayey Silt - reddish brown, moderately moist, no odor, 0 ppm 10 -14-21 25 Sand - fight gray, very fne -fine grained, poorly graded, slightly 13-18-20 30 moist, no odor, 0 ppm SandF - {fight gray, very Fine medium grained, well graded, 1 8-25-32 35 slightly moist, no odor, 0 ppm Sand - brownish red, very fine -fine grained, poorly graded, 40 slightly moist moderate odor, 75 ppm. Silty. Clay - reddish green, moderately moist, slight odor,-1 0 6 -12 -20 45 PP . 8-8-18 50 Clayey Sand - medium brown, fine grained, poorly graded, very — moist, no odor, 0 mPPa• .s-.._.Q o- . P d' .7 a Sand - light brown, course-fine grainded, well graded, trace 11-18-40 55 gravel to 12", moderately moist, no odor, 0 ppm Sand - light gray, fine - course grained, well graded, trace gravel 12-24-33 60 to 1' , slightly moist, no odor, 0 ppm 12 -18-34 65 Completion Notes: Site: Backfilied. boring with bentonite slung. Surface patch to match e)asting concrete. Texaco Service Station 4050 Gosford Road Bakersfield, CA Project No.: 423.EQ1 .00 Page 1 t WGIPL BORING LOG Dnll Rig: CME 85 Date Drilled: 6120/02 Logged By: Boring Dia: 4 Inches Boring Number: BB -11 Ryan Nunneley W Blow Counts Completion. Depth Feet Lsthoiogy Description Concrete Sand.- medium brown, fine grained, poorly graded, slightly moist, no-odor, 0 ppm 49-11 5 Clay - dark brown, very moist, slig t odor, 30 ppm 5 -10-14 10 Clay- medium brown, slightly sandy, fine grained sand, poorly 11-17-20 15 graded, moderately moist, moderate odor, 170 ppm Sand -light reddish brown, fine grained, poorly graded, slightly 11 -17 16 20 silty, very moist, moderate odor, 160 ppm Sand - Tejdi_sFjr-iy-, very7fine grained, poorly graded, very 10-20-22 25 moist, moderate odor 400 ppm Sand - light brownish gray, very fine. grained, poorly graded, 12.27 -33 30 very moist, moderate odor, 280 ppm Sand -light gray, very fri; mQium grained, well graded, 142027 35 moderately moist, moderate odor, 190 ppm r Sand - reddish brown, fine- medium grained, poorly graded, — 18-30-36 40 slightly moist, slight odor, 140 ppm - Sand - light gray, very fine- medium grained, well graded, 17-26-44 45 slightly micaceous, slightly wet, no odor, 0 ppm Sltt - dark brown, slightly micaceous, very moist; no odor, 0 18 -20-25 50 PPM 20 -24-36 55 Sand - light gray, — fine-course grained, well graded, slightly 16-27-36 60 micaceous, slightly moist, no odor, 0 ppm 65 Completion Notes: Site: Backfilled boring with bentonite slurry. Surface patch to match existing concrete. Texaco Service Station 4050 Gosford Road Bakersfield, CA Project No.: 423.EQL.00 Page 1 WG1R. - S0XrtlFnNV-erst, 111MC- BORING LOG Dnll Rig: CME 85 Date Drilled: 6/20/02 Logged By: Boring Dia: 4 Inches Boring Number: BB -12 Ryan Nunneley 0 R U Blow Completion Depth Counts Feet ithology ,'. Description Concrete _ Sand - medium brown, very fine -fine grained, poorly graded, slightly micaceous, slightly moist, no odor, 0 ppm 4-8-ID 5 Clayey Silt - dark brown, very moist, no odor, 0 ppm' 11 -18-23 10 17 -18-26 15 Sand - brownish red, very fine -fine grained, poorly graded, 1G-1 7-25 20 slightly moist, slight odor, 40 ppm Sand -dark brownish gray, very fine grained, poorly graded, 8-1 B-41 25 slightly silty, very moist, strong odor, 350 ppm 17 -25-39 30 Sand - light gray, very fine -fine grained, poorly graded, slightly micaceous, very moist, slight odor, 50 ppm Sand - light gray, very fine -fine grained, poorly graded, slightly 13-30-35 35 micaceous, very moist, strong odor, 500 ppm Clay - reddish gray, sligh y— sandyvery fine grained sand _ _ ____ 1 -9-26-40 40 poorly graded, slightly micaceous, very moist, slight odor, 20 PPM Sand - light gray, very fine-medium grained, well graded, 20-27-36 45 slightly clayey, very moist, no odor, 0 ppm Sandy Cla_ y - dark gray, fine graned sand, poorly graded, very 12 -20-25 50 moist, no odor, 0 ppm Sandy Clay - brownish red, very fine -fine grained sand, poorly 12-18-26 55 graded, very moist, no odor, 0 ppm 10 -18-28 60 Clayey Sand - brownish red, very fine -fine grained sand, poorly graded, very moist, no odor, 0 ppm 65 Completion Notes: Site: 6ackfilled boring with bentonite slurry. Surface patch to match e)dsting concrete. Texaco Service Station 4050 Gosford Road Bakersfield, CA Project No.: 423.EQL.00 Page 1 BORING LOG rl Drill Rig: " CME -95 Date Drilled: 5/6/03 Logged By: Boring Dia: 6 Inches Boring Number. BB -13 Ryan Nunneley DepthEBlow Completion Lithology DescriptionCountsFeet W 9::9; Concrete Silty Sand (SM) - grayish brown, very fine grained sand, 9:: 9 "" 9•' " 9•• 9 -; poorly graded, nonplastic, trace medium grained sand, very9.0 9 micaceous, slightly moist no odor, 0 ppm 5 -7 -7 Sandy Clay (CL) - medium brown, low plasticity, very. fine grained sand, trace mica, roderately moist, no odor, 0 ppm 6-9 -10 15 Clayey Sand (SC) - medium brown, very fine grained sand, poorly graded, nonplastic, moderately moist, no odor, 0 ppm 4 .9 a .9' 4 1' 20 Sand (SP) - light brownish gray, very fine grained, poorly graded, slightly silty, slightly moist, no odor, 0 ppm 8 -12 -14 25 Sand Silt ML - li ht reddish rh ,, low lastidi va fineY ( ) 9- 9 Y P ty, rY grained sand, slightly moist, no odor, 0 ppm 11-20-22 30 Sand (SP) - light gray, very fine -fine grained, poorly graded, slightly moist, no odor, 0 ppm 35 Sand (SP) - light gray, very fine- medium grained, poorly graded; trace gravel to 114 ", slightly moist, slight odor, 0 ppm 7 -7 -10 40 Sand (SP) - grayish brown, very foe grained, poorly graded, s • : slightly clayey, very moist no odor, 0 ppm 8 -12 -12 f .. ••$ • . s'• :.: 45 Silt (ML) - light gray, high plasticity, slightly clayey, very moist odoi P_pm9:'d9:: F9 s 9 9- Silty Sand (SM) - brownish gray, very. fine- medium grained 6 8 -9 m;$ : 50 sand, oorf raded non lastic ve moist no odor, 0 mYom_ P— moist, Sand (SP) - reddish gray, very fine -fine grained, poorly graded, slightly silty, moderately micaceous, very moist no 11 16-21 m':g_' °: 55 odor, 0 ppm - - / Sand (SW) - light gray, very fine- medium grained, well 12 -19 -28 e • . 60 graded, trace coarse grained sand, slightly moist, no odor, 0 m — a..: Sand (SW) -- light brown, very fine- coarse grained, well 12 -13-19 8'• :g • . 65 raded trace ravel to 1/3" sli htl moist,n0 odor 0 mP— . Clayey Silt (ML) - dark brown, high plasticity, moderate fine - medium grained sand, moderate gravel to V, very moist, 10-20-28 70 no odor 0 ppm — Sand (SW) - light brown, very fine- coarse grained, well raded_moderate el to 1 ", dry , no odor' 0 ppm 12 -16 -20 a Sand (SP) - light brown, very fine- medium grained, poorly75graded, trace mica, slightly moist, no odor, 0 ppm 11-16-28 80 Sand (SP) - organgish brown, very fine - medium grained, poorly graded, trace mica, moderately moist, no odor, 0 ppm 15 -21 -33 Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service StationSurfacecompletiontomatchexistingconcrete. 4050 Gosford Road Bakersfield, CA 93309 Project No.: 423.EQL.00 Page 1 r BORING LOG VV, Gr]R ukhc tt It,.; Drill Rig: CME -95 Date Drilled: 517/03 Logged By: Boring Dia: 6 Inches Boring Number: BB -14 Ryan Nunneley Blow Depth0- E Completion Lithology DescriptionCountsFeet co Concrete Sany Silt (ML) - medium brown, medium plasticity, very fine 5 grained sand, trace mica, slightly moist, no odor, 0 ppm 10 Silty Clay (CL) - dark brown, low plasticity, moderately micaceous, moderately moist, no odor, 0 ppm 15 Silty Sand (SM) - medium brown, very fine grained sand poorly graded, nonplastic, slightly micaceous, slightly moist, 0. o Q 4:: : o:: : «: noodor 0 P2m 6-8 -12 4 m; • 20 Sand (SP) - light reddish gray, very fine grained, poorly graded, slightly silty, slightly,moist, moderate odor, 215 ppm 7 -10-15 25 Sand Clay (CL) - light grayish brown, low plasticity, very fine grained sand, slightly silty, slightly moist, moderate odor, 302 11-1155-17 30 Sand (SP) - light grayish brown, very fine -fine grained, poorly graded, slightly micaceous, slightly moist, strong odor, 1445 m 9 -18-27 35 Sand (SP) - light grayish brown, very fine -fine grained, poorly graded, slightly micaceous, slightly moist, strong odor, 1545 9 -20.31 a , . c"' "'° ' " 40 Sand (SP) - grayish brown, very fine-fine grained, poorly graded, slightly clayey, trace mica, moderately. moist, 10-17-22 4: ' $ 45 moderate odor' 686 m — Sand (SP) - grayish brown, very fne -fine grained, poorly graded, slightly clayey, moderately micaceous, very moist, no 11 -12 -13 g 50 odor, 0 ppm — Clay (CL) - medium brown, medium plasticity, blight fine grained sand, slightly silty, trace mica, very moist, no odor, 0 12 -15 28 55 ppm — Sand (S1M -- light brown, very fine coarne grained, well laded, trace mica, moderately mois no odor, 0 ppm . 14 -19 -31 60 Sand (SW) - light gray, fine- coarse grained, well graded, trace gravel to 1", trace mica, very moist,, no odor, 0 ppm 21 -30 -37 65 Sand (SW) - light gray, very fine - medium grained, well graded, trace coarse grained sand, trace mica, slightly moist, no odor, 0 ppm 17 -19 -33 70 Sand (SW) - light orangish brown, very fine- coarse grained, well graded, trace gravel to 1/4 ", moderately micaceous, moderately moist, no odor, 0 ppm 23 -33-39 75 15 -33 -41 8 80 Sand (SW) - light gray, fine- coarse grained, well graded, very micaceous, slightly moist, no odor, 0 ppm 26 -30-43 s 85 Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service StationSurfacecompletiontomatchexistingconcrete. 4050 Gosford Road Bakersfield, CA 93309 Fproject No.: 423.EQL.00 Page 1 r BORING LOG GIRL ufP jr,, l Drill Rig: CME -95 Date Drilled: 517/03 Logged By: Boring Dia: 6 Inches Boring Number. BB -15 Ryan Nunneley a 0- Blow Completion Depth Lithoiogy Description E Counts FeetM Concrete Sand (SP) - grayish brown, very fine fine grained, poorly slightly silty, slightly micaceous, moderately moist, noSgraded, odor, 0 ppm Sandy Clay (CL) -dark brown,:medium plasticity, very 8 : °•$ .. 10 fine -fine grained sand, slightly micaceous; no odor, 0 ppm Clayey Sa (SC) ium brown, veg fine grained sand, nd - med s • • ;•e; . 15 A.:''" •" -0- ''" poorly graded,. nonplastic, very micaceceous, slightly moist, s.; f: . .f: . : .f .': moderate odor,.585.ppm — Sand -light brown, very fthe grained, poory9 -12_13 8: • :': • :'_: • 20 SP) grayish graded, slightly silty, slightly moist, moderate odor, 654 ppm 6 ' Sandy Silt (ML) -- light brownish gray, low plasticity, very fine 25 grained sand, slightly clayey, very moist, strong odor, 1334 e: fine graded, 17 -23 28: 30 Sand (SP) - light brown, very -fine grained, poohy slightly micaceous, slightly moist, strong odor, 1553 ppm Sand (SP) - light brown, very fine -fine grained, poorly graded, 18 -30-43 g :s $;•; . 35 slightly micaceous, slightly moist, strong odor, 4000+ ppm Sand (SP) - reddish brown, very fine - medium grained, poorly20 -26 -34 40 graded, slightly moist, strong odor, 1243 ppm Sand (SW) -light brownish gray, fine-coarse grained, well 16 -23 -28 45 graded, moderately micaceous, moderately moist, strong odor, 732 ppm — 13 -19 -25 50 i ° he -fine graSiltySand (SM) - grayish brown, very ftined sand, micaceous, moderately o:: : f:: : °:: mois no odor, 0 ppSm 21 -30 -38 55 Sand (SW) - light gray, find - coarse grained ry , well graded, ve micaceous, moderately moist, no odor, 0 ppm a•.••'•. 4.' ' ° ' ' Sand (SW) - light gray, find - coarse grained, well graded, 27 -29 -38 60 trace gravel to 1/4 ", very micaceous, very moist, no odor, 0 20 27 -39 Q ...: ..:.. f • • ' a • • " ' • Sand (SW) -light gray, find - coarse grained, well graded, vary micaceous, slightly moist, no odor, 0 ppm Sand (SW) - light orangish brown, very fine - coarse grained, 19 -30-34 70 well graded, moderately micaceous, very moist, no odor, 0 25-31 -36 a :8 e' • 75 Sand (SW) - light orangishbrows, very fine - coarse grained, well graded,. trace gravel to 1/4 ", moderately micaceous, Alp moderately moist, no odor, 0 ppm 22 -29 -35 s .;.: . -.. 80 Sand (SW) - light orangish brown, very fine- coarse grained; well graded, moderately micaceous, moderately moist, no odor, 0 ppm 11 -15-21 8...... Clayey Sand (SC) :brow gray, rygray, ve fine grained sand, poorly graded, nonplastic, very micaceous, slightly moist, no85 Completion Notes: Site: Boring - backflled with Portland cement from total depth to surface. Texaco Service Station Surface completion to match existing concrete. 4050 Gosford Road Bakersfieid, CA 93309 Project No.: 423.EQL.00 Page 1 BORING LOG Drill Rig: CME -95 Date Drilled: 5/7/03 Logged By: Boring Dia: 6 Inches Boring Number: BB -16 Ryan Nunneley Blow Depth Completion. Lithology Description Counts Feetm VF- Concrete Sand (SP) - medium brown, very fine -fine grained, poorly G• .... g..... 5 graded, slightly silty, slightly micaceous, moderately moist, no odor, 0 ppmG.. 10 Sandy Clay (CL) - dark brown, low plasticity, very find grained sand, very micaceous, moderately moist, moderate odor, 287y.. ..G,.. m 7_7_8: G 15 a 09.. 4 0.;9: Clayey Sand (SC) - medium brown, very fine grained sand, poorly graded, nonplastic, trace mica, moderately moist, 9 -12 -13 20 strong odor, 827 ppm Silty Sand (SM) - brownish gray, very fine grained sand, poorly graded, nonplastic, moderately micaceous, moderately 0 o P 0 0 g:° Q 9 -10 -16 25 mois strong odorL2360 ppm Sand (SP) - light brownish gray, very fine grained, poorly graded, slightly silty, slightly moist, strong odor, 1362 ppm 17 -23 -28 30 Sand (SP) - light gray, very fine -fine grained, poorly graded, very micaceous, dry, strong odor, 860 ppm 18-30-43 G 35 Sand (SP),- light gray, very fine -fine grained, poorly graded, very micaceous, dry, moderate odor, 428 ppm 20.26 -34 a ::: •,:; : - 40 Clayey Sand (SC) - brownish gray, very fine -fine grained sand, poorly graded, nonplastic, moderately moist, moderate 0: " °: -0: • -0 :'• 0:": Q ":;: e • :' ' P ." :°:. ' .° .' odor, 815 ppm. 16-23.28 4:::$: • G ..G .. 45 Sand (SP) - reddish brown, very fine-madium grained, poorly graded, slightly micaceous, very moist, no odor, Oppm 13 -19 -25 G Sand (SP) - reddish brown,veryfine -fine grained, poorly s.. -.g .. ..a. 50 graded, slightly micaceous, slightly moist no odor, 0 ppm 21 -30 -38 o .• -. ... 55 Sand (SW) - Ilght grayish brown, eery fine -coarse grained, well graded, moderately micaceous, slightly moist, no odor, 0G• ;G- 27.29.38 G "° Sand (SW) - light gray, fine- coarse grained, well graded, - trace gravel to 1 ", slightly micaceous, slightly moist, no odor, G•• ::•. 0 m - 20 -27 -39 65 Sand (SW) - light gray, fine - coarse grained, well graded, slightly micaceous, dry, no odor, 0 ppm 19 -30-34 a • .. . , e .. •• . ..d: 70 25 -31 -36 g .. 6•.•. :•. .: 75 Sand (SP) - light brown, very fine- medium grained, poorly graded, slightly micaceous, dry, no odor, 0 ppm 22 -29-35 Sany Clay brownish lbw very fine -fine11.15 21 CL) - gray, plasticity, nmintzri sand trace mica, very moist, no odor, 0_ppm85 Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service StationSurfacecompletiontomatchexistingconcrete. 4050 Gosford Road Bakersfield, CA 93309 Project No.: 423.EQ1 .00 Page 1 BORING LOGFC] Drill Rig: CME -95 Date. Drilled: 5/8/03 Logged By: Boring Dia: 6 Inches Boring Number: BB -17 Ryan Nunneley Blow DepthCLCompletion Lithology Description Counts Feet cn Concrete , Sand (PP).- medium brown, very fine -fine grained, poorly. 5 graded, moderately micaceous, slightly moist, no odor, 0 m9Y9YPP Silty Clay, {CL) - dare brown, medium plasticity, slightly 10 micaceous, moderately moist, no odor, 0 ppm 67 -106 g " 4 :.;' B :. ; • . ; • . 15 Silty Sand (9'M—)-- grayish brown, very fine grained sand, poorly graded, nonplastic, slightly micaceous, slight odor, 65 c 9'99-0 A:99::9: 11 -12 -15 4.. 20 v: :9:: :9:: m Sand (SP) - grayish brown, very fine -find grained, poorly graded, slightly silty, very moist, moderate odor, 488 ppm 12 -19 -23 a : Q'• • c ...: 25 Silty Sand (SM) - light brownish gray, vary fine -fine grained sand, oorl non plastic, moderately moist, strop Q:; , 4. 9. a • .:•_ • .:• • . 9 : :• odor, 1158 ppm 16 -19 -25 a .:.:4 .;.: 30 Sand (SP) -fight brown, vary fine grained, poorly graded, slightly micaceous, dry, strong odor, 3305 ppm 9-18 -29 35 Sand (SP) - light brown, very fine -fine grained, poorly graded, trace mica; moderately moist, moderate odor, 708 ppm 12 -16-19 4 °:•..' 40 Clayey Sand ( SC ) - brownish gray, very fine grainedpoorly graded, nonplastic, trace mica, moderately moist, moderate 0 Q -0." 09--, 8' :. ::• 4• m' b• • • :' • • :•a • • 4 • :. :8 . :.: 9: .•: .9 .•: .9: .• odor, 662 p mm — 11- 12 -15 45 Sand (SP) - brownish gray,very, fine- medium grained, poorly graded, slightly clayey, moderately micaceous, very moist, noa:. ;•a .. •• . . odor, 0 ppm 9 -17 -24 S0 Sand (SP) - mediumbrown, very fine grained, poorly graded, @ . •'4 slightly clayey, slightly micaceous, very moist, no odor, 0 ppm 1622 -23 55 Sand (SV - light grayish brown, fine- coarse grained, well graded, trace gravel, to 114 ", slightly micaceous, very moist no odor pm 16 -22 -29 4 ' ' ' ' O Sand (SM - light grayish brown, fine - coarse grained, wellagraded, trace gravel to 1", slightly micaceous, trace quartz, very moist, no odor' 0 ppm 21 -30-46 6' '• ' '• 65 Sand (SW) -light brownish gray, very fine -coarse grained, well graded, trace gravel to 1/4 ", moderately micaceous, very moist, no odor, 0 ppm 19 -37 -39 4 . 70 22 -31-46 a 75 Sand (SP) - light grayish brown, fine - medium grained, poorly graded, trace coarse grained sand, moderately micaceous, ve moist no odor, Oppm 17 -26-42 a 4 4 80 Sand (SP) -light grayish brown, fine- medium grained, poohy graded, trace coarse grained sand, trace gravel to 1/3 ", moderately micaceous, very moist, no odor, 0 ppm 19 27 -33 gi Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service StationSurfacecompletiontomatchexistingconcrete. 4050 Gosford Road Bakersfield, CA •93309 Project No.: 423.EQL.00 Page 1 BORING LOG - Drill Rig: CME -95 Date Drilled: 5/8/03 Logged By: Boring Dia: 6 Inches Boring Number: BB -18 Ryan Nunneley Blow Completion Depth Lithology Description EE Counts Feetm 07 Concrete Sand (SP) - grayish brown, very fine -fine grained, poorly Blighty silty, trace coarse grained sand, very5graded, micaceous, slightly moist, no odor, 0 ppm 4-4-5 1U ry fine grainedSandyClay (CL) - dark brown, low plasticity ve sand, slightly silty, trace mica, very moist, slight odor, 294` 5-6-7 s : • : ° - : a • A :-0 9:P :-0 .: Silty Sand (SM) - grayish brown, very fine grained sand, poorly graded, nonplastic, slightly moist, moderate odor, 463g:; ,,::Q.. F:: •:: P:: w: A:: • • 8 -12_12 p... :• .. e ; .: ° • . ; ° • . 20 m Silty Sand (SM) = grayish brown, very fine grained sand, poorly graded, nonplastc, moderately moist, strong odor, 0 Qq q q q 8 -12 -16 1593 ppm — Silty Sand (SM) - grayish brown, very fie graned sand, q s • 25 9a P: P A.. 0 ff .. P lastic, trace mica, moderately moist 41W. •: -.4 : •'• sli ht odor, 318 ppm — 13- 19- 22' 30 Sand (SP) - light gray, very fine -fee grained, poorly graded, a; . ; s; • ; ; • sli htymicaceous, sll htly mmoist= strong^ odor, 4000± Rpm a Sand (SP) - light grayish brown, very fine -fine grained, poorly 9 -18-27 35 graded, moderately rtiicaceous, moderately moist, strong odor, 852 ppm Sand (SP) - light grayish brown, eery fine -fine grained, poorly12-12- 18,'•::. 40 graded, slightly clayey, moderately micaceous, moderately moist strong odor, 787 p_m node.LaLejl 13 27_29 a .;.: 45. Silty Clay (CL) - medium gray, high plasticity, trace mica, moist, no odor 0 myp° Sand (SW) - grayish brown, very fine - medium grained, well 011 -18 -23 50 2raded,_m_oderately micaceous ve moist no odor, ppm Sand (SP) - medium brown, very fine grained, poorly graded, slightly clayey, sli hgtymicaceousnoodor, 0 ppm 16-23-30 a': :: 55 Sand (SVV) - light gray, very fine- coarse grained, well graded, ve micaceous, slightly moist, no odor_0 ppm Sand (SVV) - light gray, very fine- coarse grained, well graded; 18 20.26 G 60 trace gravel to 112 ", very micaceous, very moist, no odor, 0 Q. ..$ . ..8 . s: m Sand (SW) - -- light brown,, fine -coarse grained, well graded, 11 -18 -26 65 slightly clayey, slightly micaceous, trace quartz, slightly moist, / jnoodor0m 16 -20 -27 70 medium gray, very fine graned, po gradedSand (SP) - iory very micaceous, ver -mois no odor, 0 ppm_ - j / 20 -30-37 a a' 75 Sand (SP) - light gray, very fine - medium grained, poorly gradeyght micaceous, trace quay, dry, no odor, 0 ppm Sand - light brown, fine- coarse grained, well graded, SM slightly micaceous, very moist, no odor, 0 ppm 22 -31 -46 g., ..a. 80 11 -29-36 Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service Station Surface completion to match existing concrete. 4050 Gosford Road Bakersfield, CA 93309 Project No.: 423.EQL.00 Page 1 BORING LOG Tr]E Drill Rig: CME -95 Date Drilled: 5/6/03 Logged By: Boring Dia: 6 Inches Boring. Number: BB -19 Ryan Nunneley Blow ECL Completion D Lithology Description Counts eetCU Concrete. " Sand (SP) - grayish brown, very fine -fine grained, poorly 5 graded, slightly silty, very micaceous, slightly moist, no odor, OPPm 4-5-7 Silt (ML)•T.darn brown, low plasticity, slightly clayey, 10 moderately micaceous, very moist, no odor, 0 ppm 6 9 -10 15 Silty Sand (SM) - grayish blown, very fine grained sand, poorly graded, nonplastic, very micaceous, moderate) moistJ., a P P: P:: as noodor Pte0m 10 -11 -15 20 Sand (SP) - light orangish brown, very fine grained, poorly graded, slightly silty, slightly micaceous, slightly moist, no m ..:•$ ... 8: odor, Oppm 11 -11 -15 25 Sandy Silt (ML) = =light orangish blown, nonplastic, very fine grained sand, slightly clayey, moderately micaceous, 12 -20-23 moderately moist, no odor, 0 ppm _ Sand SP - light gray, fine grained, poorly graded, very micaceous, slightly moist slight odor, 57 ppm 16 -19 -27 g Sand (SW) -- light gray, very fine - medium grained, well graded, very micaceous, slightly moist, moderate odor, 597 PPM 13 -14-19 40 Sandy Silt (ML) -- reddish gray, nonplastic, very fine grained s sand, very micaceous, very moiss slight odor, 0 p mm 7 -12 -16 45 Clayey Sand (SC) )7brownish gray, very fine -fine grained sand, poorlygraded, nonplastic, very micaceous, very moist, P -P; " Q -0:':P;P -0:':p:Qo: ; no odor, 0 p m 13 -20-22 Sand (SP) - medium brown, very fine -fine grained, poorly. graded, slightly clayey, very micaceous, very moist, no odor, Q• 0 m 16 -27 -36 a" '•:' '•'• 4•. a' : • :_' "• 55 Sand (SW) -- light brews, very fine- medium grained, well graded, very micaceous, slightly moist, no odor, 0 ppm 20 -29-37 60 Sand (S1/ - Ilght gray, very fine boarsa grained, well graded, trace gravel to Y47,, very micaceous; moderately moist, no odor, 0 ppm 18 -29 31 a : ' $ " ' g 65 Sand (SP)'- light gray, very fine -fine grained, poorly graded, very micaceous, slightly moist, no odor, O'ppm 10- 12 -16 m....• ..Q.. a :'$ 70 Sand (SP) - medium brown, very fine -floe grained,, poory graded, slightly clayey, moderate gravel to 2 ", very micaceous, very moist no odor, 0 ppm 17 -30 34 g ' 8: 75 Sand (SW) - light gray, very fine- medium grained, well graded, slight coarse grained sand, very micaceous, slightly moist no odor p m 11 -30-37 Sand (SW) - light orangish brown, fine - coarse grained, well a 80 graded, very micaceous, slightly moist, no odor, 0 ppm 20 -29 -37 85 Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service StationSurfacecompletiontomatchexistingconcrete. 4050 Gosford Road Bakersfield, CA 93309 Project No.: 423.EQL.00 Page 1 BORING .LOG Drill Rig: CME -95 Date Drilled: 5/6/03 Logged By: •, Boring Dia: 6 Inches Boring Number: BB -20 Ryan Nunneley Blow Depth0- E Completion Lithology Description Counts Feet g :. • . 9 o a Concrete Silty Sand (SM) - medium brown, very fine grained sand, @ : .• aP : P : P : m....$., ..Y .. 5 cP:i 4:PP. P dP .. 0 9:9 P.. P dP 9: 4: a .. poorly graded, nonplastic, slightly micaceous, slightly moist; no odor, 0 ppm To, Sandy Silt (ML) - medium brown, low plasticity, very fine.., grained sand, very moist, no odor, 0 ppm 5-5-8 a ...•G • ..• . . 15 Sand (SP) _ grayish brown, very fine grained, poorly graded, slightly clayey, moderately moist, no odor, 0 ppm 20 Sandy Clay (CL) - brownish gray, low plasticity, very fine grained sand, slightly silty, very moist, no odor, 0 ppm 7 -12 -19 a : $'• • 25 Silty Sand (SM) - grayish brown, very fine grained sand, oorl raded non lastic sli htl moist no odor, 0 m- yam_ L_ - Q P.P : -0; P: Sand (SP) - light orangish brown, very fined grained, poorly 11 -12 -18 c ..;..G .;.. 30 graded dry, no odoor_O ppm Sand (SP) - light brown, very fine -fine grained, poorly graded, 12-16-21 f.. 6 .'. .; .G .. g:::$::$: • 35 . moderately moist no odor?r, 0 ppm - — — Sand (SP) -light brown, very fine medium grained, poorly graded, very micaceous, moderatly moist, no odor, 0 ppm 17 -23 -34 g • "'$ 40 Sand (SP) - light brown, very fine — medium grained, poorly graded, trace gravel to 1 ", very micaceous, moderatly moist, no odor 0 ppm . 12 -15-18 45 Silt (ML) - light gray, medium plasticity, slightly clayey, very moist, no odor, 0 ppm — Sand (SP) - brownish gray, very fine -fine grained, poorly 11-13-16 50 graded, moderately micaceous, very moist, no odor, 0 ppm 17 -30 -38 GG .. 4w - • " 55 Sand (SW) --light orangish brow ,, very fine - medium grained, well graded, trace gravel to 2/3 ", very moist, no odor, 0 ppm 19 -23 -29 60 Sand (SWj -light Fr—ow—n, very fine- coarse grained, well graded, moderate gravel to 1 ", slightly micaceous, moderately moist, no odor, 0 ppm 13 -20 -22 C!F " 65 ne -fine grained, poorlySand ( SP ) - light blackish gray, very fi- graded, trace coarse grained sand, slightly micaceous, moderate) moist, no odor, 0 ppm 16 -19 -24 70 Sand (SW) - light brdwn, very fine medium grained, well8.,.... graded, slightly micaceous, slightly moist, no odor, 0 ppm 12 -12 -18 3' G 4. •'8. ..4.. p.. •• .... 75 Sand (SP) - reddish brown, fine- medium grained, poorly graded, trace mica, moderately moist no odor, 0 ppm 9-16-23 80 Sand (SW) - orangish brown, very fine- coarse grained, well graded, slightly micaceous, no odor, 0 ppm 17 -30-32 4: Completion Notes: Site: Boring backfilled with Portland cement from total depth to surface. Texaco Service StationSurfacecompletiontomatchexistingconcrete, 4050 Gosford Road I Bakersfield, CA 93309 Project No.: 423.EQL.00 Page 1 V;1i5. G. '1- BORING LOG Drill Rig: CME -85 Date Drilled: 9125103 Logged By. Boring Dia: 10 Inches Boring Number. VEW -1 Ryan Nunneley M Blow Counts Completion Depth Peet Lithology Description 5 9° P P P P::o:: ri P: P = :: P: Concrete Silty Sand (SM) - grayish brown, very fine -fine grained sand, poorly graded, moderately micaceous, moist, no odor, 0 ppm Silt (ML) -- darn brown, n(Tplasticslslightly clayey, slightly 4 -5-6 10 micaceous, moist, no odor, 0 ppm Sandy Silt (ML) - medium brown, nonplastic, very fine 6 -7 -9 15 grained sand, very micaceous, very moist, slight odor, 163 PPM Sand (SP) - light brownish gray, very fin,Pine grained sand, 7-9-14 20 poorly graded, slightly silty, moist, strong odor, 620 ppm 19 36 41 25 Silty Sand (TM) - medium brown, very fine grained sand poorly graded, nonplastic, moist, moderate odor, 196 ppm 16 -21 -28 30 Sand (SP) - light brown, vary fine grained sand, poorly graded, slightly micaceous, damp, strong odor, 1780 ppm 19-23-24 35 Sand (SP) - light grayish brown, very fine -fine grained sand, poorly graded, very micaceous, damp, strong odor, 1643 PPM 18 -31 -34 40 Sand (SP) -light reddish owrFown very fide grained sand, poorly graded, very micaceous, damp, strong odor, 1442 ppm Sand (SW) - light brownish gray, fine -coarse grained sand, 22 -382 45 well graded, very micaceous, moist, moderate odor, 164 ppm Sandy Clay (CL) - reddish gray, medium plasticity, fine 19 -22 -28 50 grained sand, moderately micaceous, very moist, no odor, 0 PPM Sand (SW) -fight brown, fine- coarse grained sand, well 24 28 48 55 graded, very micaceous, damp, no odor; 0 ppm 7 60 65 Completion Notes: Site: VEW -1 is nested with two 2" wells. VEW-1A is screened with 20 feet of schedule 40 PVC, 0.020" slotted screen from 10 feet to 30 feet below grade. 10 feet to surface is blank schedule 40 PVC. VEW -1B is screened with 15 feet of schedule 40 PVC, 0.020" slotted screen from 40 feet to 55 feet below grade. 40 feet to surface is blank schedule 40 PVC. Annular spaced backfilled with sand cTexacoS ervice Station 44050 GOSsI Ord Road from total depth to 37 feet, bentonite seal placed from 37 feet to 33 feet, annular space backfilled . with sand from 33 feet to 8 feet, bentonite seal placed from 8 feet to 1 foot below grade, 12 -inch Ba}CerSTle d CA 93309 diameter well box set in concrete from 1 foot to surface. Project No.: 423.EQL.00 Page 1 l li r BORING LOG Drill Rig: CME-85 Date Drilled: 9/24/03 Logged By: Boring Dia: 10 Inches Boring Number: VEW-2 Ryan Nunneley CL E ca U) Blow Counts Completion Depth Feet Lithology Description Concrete Sand (SP) - grayish brown, very fine-fine grained sand, poorly graded, slightly silty, very micaceous, moist, slight 5 odor, 25 ppm Sandy Clay (CL) - dark brown, medium plasficity, very fine 2-4-5 10 grained sand, very micaceous, very moist slight odor, 136 ppm 1-*-.'— 15 Clayey Sand (SC) - medium brown, very fine grained sand, poorly graded, nonplastic, slightly micaceous, moist, strong odor, 773 ppm 0: ',.: ,:9D:Q 9• .9,.:" sand (SF) -light grayish brown, very fine grTaned sand, 12-29-32 20 poorly graded, slightly silty, very micaceous, moist, strong odor, 992 ppm Sandy Silt (ML) - light grayish brown, nonplastic, very fine 19-31-50 25 drained sand, moderately micaceous, moist, strong odor, 904 PPM Sand (SP) - light brown, very fine grained, poorly graded, 18-34-38 30 very micaceous, damp, strong odor, 705 ppm Sand (SP) - light grayish brown, very fine-medium grained 19-30-38 35 sand, poorly graded, trace gravel to 1/4", very micaceous, damp, moderate odor, 359 ppm Sand (SP) - reddish brown, very fine grained sand, poorly 24-32-48 40 graded, moderately micaceous, damp, strong odor, 676 ppm 22-31-34 45 Sand ($W) - light gray, very fine -medium grained sand, well graded, very micaceous, damp, slight odor, 185 ppm 13-25-32 50 Sandy Silt (ML) - grayish brown, nonplastic, fine grained sand, moderately micaceous, moist, slight odor, 67 ppm Sand (SW) -light brownish —gray, very —fine-coarse —grained 26-32-41 55 sand, well graded, very micaceous, moist no odor, 0 ppm 26-33-50 so 65 Completion Notes: Site: VEW-2 is nested with two 2" wells. VEW-2A is screened with 25 feet of schedule 40 PVC, 0.020" slatted screen from 5 feet to 30 feet below grade, 5 feet to surface is blank schedule 40 PVC. Texaco Service Station VEW-213 is screened with 20 feet of schedule 40 PVC, 0.020" slatted screen from 40 feet to 60 feet below grade. 40 feet to surface is blank schedule 40 PVC. Annular spaced backfiffled with sand 4050 Gosford Road from total depth to 37 feet, 6entonite seal placed from 37 feet to 33 feet, annular space backfilled with sand from 33 feet to 3 feet, bentonite seal placed from 3 feet to I foot below grade, 12-inch Bakersfield, CA 93309 diameter well box set in concrete from I foot to surface. Project No.: 423.*EQL.00 Page 1 1 BORING LOG Drill Rig: CME-85 Date Drilled: 9/24/03 Logged By: Boring Dia: 10 Inches Boring Number: VEW-3 Ryan Nunneley E CU Blow Counts Completion Depth Feet Lithology Description Concrete Sand (SP) - light brown, very fine grained sand, poorly graded, very micaceous, moist, no odor, 0 ppm Sandy Clay (CL) - dark brown, low plasticity, very fine grained 10 sand, slightlymicaceous, moist, moderate odor, 372 ppm I D- 15-22 15 graded, slightly clayey, slightly micaceous, moist, strong odor, 2156 ppm Silty Sand (SM) - Prownish gray, very fine-fine sand, poody graded, noriplastic, very moist strong odor, 732 ppm P 9:: 43-50 25 Silty Sand (SM) - light grayish brown, very fine grained sand, poorly graded, nonplastic, moist, strong odor, 4000+ pprn Sand (SP) - li t gray, very fine-fine grained sand, poody 27-36-42 30 graded, very micaceous, damp, strong odor, 582 ppm Sand (SP) - light gray, very fine-fine grained sand, poorly 16-23-38 35 graded, very micaceous, damp, strong odor, 4000+ ppm 20-30-37 Y. 40 Clayey Sand (SC) - medium brown, Very fine grained sand, poorly graded, nonplastic, very micaceous, moist, strong odor, 1640 pprn Sand (SW) - light brown, fine-coarse grained sand, well Sandy Silt (ML) medium gray, nonplastic, very fine grained 50 sand, Mightly clayey, very micaceous; very moist, no odor, 0 Clayey Sand (SC) - medium brown, very fine-fine grained sand, poorly graded, nonplastic, very micaceous, very moist Completion Notes: Site: VEW-3 is nested with two 2" wells. VEW-3A is screened with 20 feet of schedule 40 PVC, 0.020" slotted screen from 5 feet to.25 feet belowgrade. 5 feet to'surface is blank schedule 40 PVC. Texaco Service Station VEW-'3b is screened with 15 feet of schedule40 PVC, 0.020" slotted screen froffi 35 feet to 50 feet belowgrade. 35 feet to surface is blank s . chedule 40 PVC. Annular spaced backfilled with sand 4050 Gosford Road from total depth to 3Z feet bentonite seat placed from 32 feet to 28 feet, annular spade backfilled with sand from 28 feet to 3 feet bentonite seal placed from 3 feet to 1 foot below grade, 12-Inch Bakersfield, CA 93309 diameter well box set in concrete from I foot to surface. Project No.: 423.EQL.00 Page 1 I BORING LOG Drill Rig: CME-85 Date Drilled: 9123/03 Logged By: Boring Dia: 10 Inches Boring Number: VEW-4 Ryan Nu'nneley E M co Blow Counts Completion Depth Feet Lithology Description Concrete Sand (SP) - medium brown, very fine grained sand, poorly graded, slightly silty, very micaceous, moist no odor, 0 ppm 5 Silty Clay (CL) - dark brown, low plasticity, very micaceous, 45-12 10 moist no odor, 0 ppm Sandy Silt (ML) brownish gray, nonplastic, very fine grained Cr10 14 15 sand, moist moderate odor, 624 ppm 9-12-16 20 Silty Sand (SM) - grayish brown, very fine-fine grained sand, poorly graded, nonplastic, slightly micaceous, moist, strong odor, 534 ppm P Sand (SP) - light brownish gray, very fine -fine grained sand, 12 -1822 25 poorly graded, very micaceous, moist moderate odor, 576 ppm Sand (SP) - light gray, very fine grained sand, poorly graded, 15-20-26 30 moderately micaceous, damp, strong odor, 1124 ppm rySand (SP) - light gray, very -medium grained sand, poorlyfine 21-2439 35 graded, very micaceous, damp, strong odor, 4000+ porn Sand (SP) - light brown, very fine-fine grained sand, poorly 23-24-24 20-20-22 40 45 1/4 1/4 //"/ I graded, very micaceous, damp, strong odor, 1081 porndamp, _ Clay (CH) - brownish gray, high plasticity, moderately micaceous, no odor 0 mmsmoist , pp Clayey Sand (SC) - brownish gray, very fine-fine grained sand, poorly graded, nonplastic, very micaceous, very moist, moderate odor, 244 ppm P 9. . P_ .9 .9. 99 P 17-22-29 50 ClayETy Sang (SC) - d—ark gray, TeTfin fine grained sand, __ poorly graded, nonplastic, very micaceous, very moist, no odor, 0 ppm 22-50 55 ............ F77777.*7777- Sand (SP) - light grayish brown, very fine-fine grained sand, poorly graded, slightly clayey, very micaceous, very moist, no odor, 0 r)c)m- Sand (SVV) - light gray, fine-coarse grained sand, well 23-50 60 graded, trace gravel to 1/2", damp, no odor, 0 ppm 26-32-32 - 65 Completion Notes: Site*, VEW-4 is nested with two 2" wells, VEW-4A is screened with 20 feet of schedule 40 PVC, 0.020" slotted screen from 10 feet to 30 feet below grade. 10 feet to surface is blank schedule 40 PVC. Texaco Service Station VEW-413isscreened with 25 feet of schedule 40 PVC, 0.020" slotted screen from 40 feet to 65 feet below grade. 40 feet to surface is blank schedule 40 PVC. Annular spaced balled with sand 4050 Gosford Road from total depth to 37 feet bentonite seal placed from 37 feet to 33 feet, annular spare backfilled with sand from 33 feet to 8 feet bentonite seal placed from 8 feet to I foot below grade, 12-inch Bakersfield, CA 93309 diameterwell box set in concrete from 1 foot to surface. Project No.: 423.EQL.00 Page 1 1 BORING LOG Drill Rig: CME -85 Date Drilled: 9/23/03 Logged By: Boring Dia: 10 Inches Boring Number. VEW -5 Ryan Nunneley a E CU W Blow Counts Completion Depth Feet Lithology Description Concrete Sand (SP) - grayish brown, very fine -fine grained sand, poorly graded, slightly silty, very micaceous, damp, slight 5 odor, 56 ppm Silty Clay (CL) - medium brown, tow plasticity, slightly 7 -15-17 10 micaceous, mosit, slight odor, 82 ppm Sandy Silt (ML) - medium brown,nonplastic, very fine 6-9 -12 15 grained sand, slightly micaceous, very moist, strong odor, 3405 ppm 10 -10 17 20 Silty Sand (SM) - light grayish brown, nonplastic, very fine -fine grained sand, slightly micaceous, moist, strong odor, 4000+ ppm Q Q : Sandy Silt (ML) -- fight grayish brown, fine grained sand, 15-19-35 25 slightly micaceous, very moist, strong odor, 3081 ppm Sand (SP) - light brownish gray, very fine -fine grained sand, poorly graded, very micaceous, damp, strong odor, 4000+ 22 -30-34 30 ppm Sand (SP) - light brownish gray, very fine -fine. grained sand, 26 -36-41 35 poorly graded, very micaceous, damp, strong odor, 2391 PPM Sand (SP) - light grayish brown, very fine grained sand, 24 -28-35 40 poorly graded, very micaceous, very moist, strong odor, 1378 ppm 19 21 -24 16 -27 -38 45 50 Sa laY( CH )- ish brow, hi h lastici 6emediom9ra grained sand, very micaceous, very moist, slight odor, 47 PPm Sand (SP) - grayish brown, very fine -fine grained sand, i poorly graded, slightly clayey, very micaceous, moist, no odor, 0 ppm 40-45-50 55 Sand (SW) - light gray, very fine - medium grained sand, well graded, very micaceous, damp, no odor, 0 ppm 23 -38-43 80 Sand (SW) - light gray, fine - coarse grained sand, well graded, moderate gravel to 1/3 ", very micaceous, damp, no odor, 0 ppm 9: 16 -1 i -15 65: Silty Sand (SM) - medium gray,, nonplabtic, very fine grained sand, very micaceous, very moist, no odor, 0 ppm 9:. F Completion Notes: Site:. VEW -5 is nested with two 2" wells. VEW -5A is screened with 25 feet of schedule 40 PVC, 0.020" slotted screen from 5 feet to 30 feet below grade. 5 feet to surface'is blank schedule 40 PVC. VEW -5B is screened with 25 feet of schedule 40 PVC, 0.020" slotted screen from 40 feet to 65 feet below grade. 40 feet to surface is blank schedule 40 PVC. Annular spaced backrlled with sand Serviceexacoervice StationTexacoS 4050 Gosford Road from total depth to 37 feet bentonite seal placed from 37 feet to 33 feet annular space backrilled with sand from 33 feet to 3 feet, bentonite seal placed from 3 feet to 1 foot below grade, 12 -inch Bakersfield, CA 93309 diameterwell box set in concrete from 1 foot to surface. Project No:: 423.EQL.00 Page 1 APPENDIX C SVE FIELD DATA FIELD WORD LOG CLIENT: JOB NO. P4 L%o'D to I NAVE DATE: rHldlAdminTormslfeld logs u FIELD 'WORIC LOG' CLIENT:,; I JOB NO. NAME (JG jfG3(L'1. -ice DATE: KHM1AdminTormslfield logs 1 ` a FIELD WORK LOG CLIENT: JOB NO. NAME LAU Z DATE: TIME NOTES /OBSERVATIONS KH,vAAdmin\Forms\ field logs i r got r ice/ I r 0 WA s MILF 1 v i G 51 415D 41. 1. JG `rC ' w. tl 'DD OW KH,vAAdmin\Forms\ field logs i r got r ice/ I r 0 WA s MILF 1 v i G SOIL VAPOR EXTRACTION PILOT TEST PRIMARY TEST- FIELD SHEET Prolects%SVE Field Test Revised MeasurmentVacuumvelg PID CO2 Temp. Level Setting MM AM_------- MM MIM M Prolects%SVE Field Test Revised SOIL VAPOR EXTRACTION PILOT TEST f PRIMARY TEST - FIELD SHEET I a <33 a,!°( bI :9VEw-3A fgw-RA MEN Water feet) 5i. R'ci n1 lam Vacuum vekmi+r— i (fn. Hq)__—Wf1&--(ppm) (%) (F) (feell NNEMIR'"o VANNDNM- WWOMEWMEN"=. Projeds\SVE Fleld Test Revlsedl SOIL VAPOR EXTRACTION PILOTTEST PRIMARY TEST - FIELD SHEET r +B Jt4.. tir''13 ProjectslSVE Field Test Revised Rebmid Measurment ai+r ra P i VaGuu lfflffm MEMKIMMAMWFTMR WMANJ 1 I L'if7i 1lfr IlAf7.S-Ii/ r 7 L1 ProjectslSVE Field Test Revised M. al 7 CERTIFIED ANALYTICAL REPORTS AND CHAIN -OF- CUSTODY DOCUMENTATION L IDecember 17, 2003 Katherine Richardson KHM / Delta Environmental 911 South Primrose Avenue, Unit K Monrovia, CA 91016 -0000 Subject: Calscience Work Order No.: 03 -12 -0697 Client Reference: 4050 Gosford Rd., Bakersfield, CA Dear Client: Enclosed is an analytical report for the above- referenced project. The samples included in this report were received 12/11/2003 and analyzed in accordance with the attached chain -of- custody. Unless otherwise noted, all analytical testing was accomplished in accordance with the guidelines established in our Quality Assurance Program Manual, applicable standard operating procedures, and other related documentation. The original report of any subcontracted analysis is provided herein, and follows the standard Calscience data package. The results in this analytical report are limited to the samples tested and any reproduction thereof must be made in its entirety. If you have any questions regarding this report, please do not hesitate to contact the undersigned. Sincerely) 1 Cltb ce vironmental r ies, I nc. Project Manager 47 Michael J. Crisostomo Quality Assurance Manager 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 W.a lw= nvironmental Aw aboratories, Inc. Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alscience im' nvironmental a, aboratories, Inc. Analytical Report A LABORATORY ID: 03-12-0697 Method: ASTM D -1946 Fixed Gases Matrix: AirNapor CLIENT: KHM / Delta Environmental PROJECT: 4050 Gosford Rd., Bakersfield, CA Sample ID OZ +Argon N2 CH4 CO co, Dilution Date I°) N I°) I°) I °) Factor Analyzed VEW -5B Step Start .5.5 82.9 ND ND 11.5 1 12/11/03 VEW -5B Step End 7.0 82.8 ND ND 10.2 1 12/11/03 VEW -5A Step Start 2.6 82.4 ND ND 15.0 1 12/11/03 VEW -4B Step Start 10.3 82.1 ND ND 7.6 1 12/11/03 VEW -4B Step End 10.7 82.3 ND ND 7.0 1 12/11/03 VEW -4A Step Start 2.8 81.5 ND ND 15.7 1 12/11/03 VEW-4A Ext Start 3.7 81.2 ND ND 15.1 1 12/11103 Method Blank ND ND ND ND ND 1 12/11/03 Reporting Limit: 0.1 0.1 0.1 0.1 0.1 Quality Assurance and Control Information Laboratory Duplicate Sample Batch ID: 031211 Sari; ..,e1i1 1 upl sate` RPp 1 Control 1or#cConci Limits Oxygen +Argon 0 -30 Nitrogen 71.3':111111:: `1'1...7$_x:::: 11 Q[ i 0 -30 Carbon Dioxide 5131:::;::1:111::1 153`G`11111 71` :;1`1[1 0 -30 Laboratory Notes All results-are reported in percent ( %) by volume. Key: 02= Oxygen, N2= Nitrogen, CH4= Methane, CO= Carbon Monoxide, CO2= Carbon Dioxide, NA Not Applicable, ND =Not Detected at the rep rting level 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 aiscience n vironmental Analytical Report Ablw aboratories, Inc. KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0697 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 1 of 3 Lab Sample Date Date Date Client Sample Number Number Collected Matrix Prepared Analvzed QC Batch ID Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 40 80 ppb (v /v) Methyl -t -Butyl Ether (MTBE) " 27000 160 80 E ppb (v /v) Toluene 46 40 80 ppb (v /v) Tert-Butyl Alcohol (TBA) 15000 160 80 E ppb (v /v) Ethylbenzene ND 40 80 ppb (v /v) Diisopropyl Ether (DIPE) ND 160 80 ppb (v /v) p /m- Xylene 71 80 80 J ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 160 80 ppb (v /v) o- Xylene ND 40 80 ppb (v /v) Tert- Amyl - Methyl Ether (TAME) ND 160 80 ppb (v /v) w t4 VIAgL 4ma+ad VEW -56 Ste Start :" s h03 -12 -0697 =1 ,< 8,12/09703, Air N/A *12112/ 3 . 03i211L01 Parameter Result Methyl -t -Butyl Ether (MTBE) 80000 I &F- WOBIStep, Pt Parameter Result Methyl -t -Butyl Ether (MTBE) 67000 RL DF Qual Units Parameter 1600 800 E,Dppb (v /v) Tert-Butyl Alcohol (TBA) RL DF Qua] Units 6400 3200 D ppb (v /v) Result RL DF Qual Units 15000 1600 800 D ppb (v /v) Parameter Parameter Result RL DF Qua] Units Parameter Result RL DF Qual Units e Benzene ND 63 125 ppb (v /v) Methyl -t -Butyl Ether (MTBE) 37000 250 125 E ppb (v /v) Units Toluene 65 63 125 ppb (v /v) Tert-Butyl Alcohol (TBA) 10000 250 125 ppb (v /v) 1800 Ethylbenzene ND 63 125 ppb (v /v) Diisopropyl Ether (DIPE) ND 250 125 ppb (v /v) 1000000 p /m- Xylene 100 130 125 J ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 250 125 ppb (v /v) o-Xylene ND 63 125 ppb (v / sv.) - Methyl ND 25.0T.. e rt- Amyl Ethe_ r TwA^M' 1 Ef ) 125 ppb (v /v; ) 3500 ppb (v /v) 5 12/421,03ff . 03- 031212L01 60000 7000 EW58jWEn U 1,. Parameter Result RL DF Qual Units 1800 3500 Methyl -t -Butyl (MTBE) 110000 5000 2500 D ppb (v /v) ND 7000 3500 ppb (v /v) p /m- Xylene 28000 3500 Ether VEW5A Step Start., r °03 12 0697`3 2109/03 Atr h N[Al2/11/03 031211L01 {j ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 7000 3500 Parameter Result RL DF Qua[ Units Parameter Result RL DF Qual Units Benzene 7400 1800 3500 ppb (v /v) Methyl -t -Butyl Ether (MTBE) 1000000 7000 3500 E ppb (v /v) Toluene 2400 1800 3500 ppb (v /v) Tert-Butyl Alcohol (TBA) 60000 7000 3500 ppb (v /v) Ethylbenzene 6400 1800 3500 ppb (v /v) Diisopropyl Ether (DIPE) ND 7000 3500 ppb (v /v) p /m- Xylene 28000 3500 3500 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 7000 3500 ppb (v /v) o- Xylene 5100 1800 3500 ppb (v /v) Tert- Amyl - Methyl Ether (TAME) ND 7000 3500 ppb (v /v) RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 1 ,, 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 Gw?lscience Result RL DF Environmental Parameter Analytical Report RL aboratories, inc. Benzene KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03-12-0697 Monrovia, CA 91016-0000. Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 2 of 3 Lab Sample Date Date Date Client Sample Number Number Collected Matrix Prepared Analyzed QC Batch ID Qte'e'Y / CTStart 27Uk—ft x 11 2 70 YEW-5 6M E ppb (v/v) Parameter Result RL DF Qual Units 54 Methyl -t-Butyl Ether (MTBE) 4700000 280000 14000a) ppb (v/v) 35 Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 18 35 ppb (v/v) Methyl-t-Butyl Ether (MTBE) 113000 70 35 E ppb (v/v) Toluene 43 18 35 ppb (v/v) Tert-Butyl Alcohol (TBA) 11000. 70 35 E ppb (v/v) Ethylbenzene 54 18 35 ppb (v/v) Diisopropyl Ether (DIPE) ND 70 35 ppb (v/v) p/m-Xylene 240 35 35 ppb (v/v) Ethyl-t-Butyl Ether (ETBE) ND 70 35 ppb (v/v) o-Xylene 55 18 35 ppb (v/v) Tert-Amyl-Methyl Ether (TAME) ND 70 35 ppb (v/v) Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Methyl-t-Butyl Ether (MTBE) 78000 700 350 E,Dppb (v/v) Tert-Butyl Alcohol (TBA) 13000 700 350 D ppb (v/v) 47' 7-77 7',7 -7 47 L ;A3'12'11 112113, Ms 6010 P.91112 IVAO* 104A4si Wn 12-0'697 NINA Result RL DF Qual Units Methyl-t-Butyl Ether (MTBE) 75000 14000 7000 D ppb (v/v) Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 7.5 15 ppb (v/v) Methyl-t-Butyl Ether (MTBE) 6200 30 15 E ppb (v/v) Toluene 24 7 15 ppb (v/v) Tert-Butyl Alcohol (TBA) 7100 30 15 E ppb (v/v) Ethylbenzene 25 7 15 ppb (v/v) Dfisopropyl Ether (DIPE) ND 30 15 ppb (vIv) p/m-Xylene 110 15 15 ppb (v/v) Ethyl-t-Butyl Ether (ETBE) No 30 15 ppb (v/v) o-Xylene 26 7 15 ppb (v/v) Tert-Amyl-Methyl Ether (TAME) ND 30 15 ppb (v/v) Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Methyl-t-Butyl Ether (MTBE) 31000 300 150 E,Dppb (v/v) Tert-Butyl Alcohol (TBA) 12000 300 150 D ppb (v/v) IFr9vyVEWAnxo50P.,12-'66 5 M#.;: 0 Parameter Result RL DF Qual Units Methyl-t-Butyl Ether (MTBE) 33000 6000 3000 D ppb (v/v) RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 wa science AF nvironmental t Analytical Report : AlIff aboratories, Inc. KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0697 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Methyl -t -Butyl Ether (MTBE) 2000000 260000 130000 ppb (v /v) Page 3 of 3 3F12 12/09/03 ° 12111 % 3 s Lab Sample Date Date Date Client Sample Number Number Collected Matrix Prepared Analyzed QC Batch ID Toluene ND 750 1500 ppb (v /v) Tert-Butyl Alcohol (TBA) 39000 3000 1500 ppb (v /v) U W=4A Step Start f 03;12- 0697 -6 12/09/038 A!r /A 04 j3, -211 L01 Par meter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 330 650 ppb (v /v) Methyl -t -Butyl Ether (MTBE) 320000 1300 650 E ppb (v /v) Toluene ND 330 650 ppb (v /v) Tert-Butyl Alcohol (TBA) 65000 1300 650 ppb (v /v) Ethylbenzene ND 330 650 ppb (v /v) Diisopropyl Ether (DIPE) ND 1300 650 ppb (v/v) p /m- Xylene 340 650 650 J ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 1300 650 ppb (v /v) o- Xylene ND 330 650 ppb (v /v) Tert-Amyl -Methyl Ether (TAME) ND 1300 650 ppb (v /v) e+:? " i"; '-:- € '; .` §' i'. " `"'_- ' •" `.°:. f'. r:'° '-' ':- : .. uaa°? "-: . w,-.» i» rss= t- rFF' s- ` s; `.^a•:.3r?33t;a:,:iti's .3:, z* Parameter Result RL. DF Qual Units Methyl -t -Butyl Ether (MTBE) 2000000 260000 130000 ppb (v /v) 3F12 12/09/03 ° 12111 % 3 s Result RL DF Qual Units Parameter Result RL DF Qual Units VVEW AExtStart 0697 7 A N1A - .031211L01 f Toluene Parameter Result RL DF Qual Units Parameter Result RL DF Qua[ Units Benzene 830 750 1500 ppb (v /v) Methyl -t -Butyl Ether (MTBE) 600000 3000 1500 E ppb (v /v) Toluene ND 750 1500 ppb (v /v) Tert-Butyl Alcohol (TBA) 39000 3000 1500 ppb (v /v) Ethylbenzene ND 750 1500 ppb (v /v) Diisopropyl Ether (DIPE) ND 3000 1500 ppb (v /v) p /m- Xylene 1900 1500 1500 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 3000 1500 ppb (v /v) o- Xylene ND 750 1500 ppb (v /v) Tert- Amyl - Methyl Ether (TAME) ND 3000 1500 ppb (v /v) N /A 12/1032/Q „ x , vEW= 4AExt Stdrt g_ ... b r `' U N: 30312121 ND 1.0 1 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 2.0 1 ppb (v /v) o- Xylene Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 38800000 300000 150000 ppb (v /v) 1 . ig "I"', x i, ham RR' 002= 2,606i . Nia Air 12111/03fir' 7_ y N/aiNeth"IBlan I 09ffi7,-09 _ 031211L01 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.50 1 ppb (viv) Methyl -t -Butyl Ether (MTBE) ND 2.0 1 ppb (viv) Toluene ND 0.50 1 ppb (v /v) Tert-Butyl Alcohol (TBA) ND 2.0 1 ppb (v /v) Ethylbenzene ND 0.50 1 ppb (v /v) Diisopropyl Ether (DIPE) ND 2.0 1 ppb (v /v) p /m- Xylene ND 1.0 1 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 2.0 1 ppb (v /v) o- Xylene ND 0.50 1 ppb (v /v) Tert- Amyl - Methyl Ether (TAME) ND 2.0 1 ppb (v /v) Method Blank X0909 -002 -2 60TH Nlla AirNiA 12112%03 t031212L01 xl, 4ao.'.°c.,. Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene Toluene ND . 0.50 1 ppb (viv) Methyl -t -Butyl Ether (MTBE) ND 2.0 ND 0.50 1 ppb (v /v) Tert-Butyl Alcohol (TBA) ND 2.0 1 ppb (v /v) 1 ppb (v /v) Ethylbenzene ND 0.50 1 ppb (v /v) Diisopropyl Ether (DIPE) ND 2.0 1 ppb (v /v) p /m- Xylene ND 1.0 1 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 2.0 1 ppb (v /v) o- Xylene ND 0.50 1 ppb (v /v) Tert- Amyl - Methyl Ether (TAME) ND 2.0 1 ppb (v /v) RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alsdence environmental Quality Control - LCS /LCS Duplicate N, i aboratodes, Inc. KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0697 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Date Date LCS /LCSD Batch Quality Control Sample ID Matrix Instrument Prepared Analyzed Number Parameter LCS %REC LCSD %REC REC CL RPD RPD CL Qualifiers Benzene 119 118 61 -121 1 0 -37 Toluene 102 104 60 -120 2 0 -39 Ethylbenzene 100 101 61 -127 1 0 -38 p /m- Xylene 99 100 57 -129 1 0 -39 o- Xylene 98 99 58 -130 1 0 -38 Methyl -t -Butyl Ether (MTBE) 107 107 45 -147 0 0 -25 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 FAX: (714) 894 -7501 alscience environmental Quality Control - LCS LCS Duplicate Aw aboratories, Inc. t KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0697 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Date Batch Quality Control Sample ID Matrix Instrument Prepared Analyzed LCSPrea Number cx ^"'a id*` '' ay,,rg, i t , 0 7 -0- 002'2607` r -,° Air GC /MS DD 2N 2103 031212BIrsN/A a i ads __. Parameter LCS %REC LCSD %REC %REC CL RPD RPD CL Qualifiers Benzene 121 109 61 -121 10 0 -37 Toluene 106 93 60 -120 13 0 -39 Ethylbenzene 105 92 61 -127 14 0 -38 p /m- Xylene 106 92 57 -129 14 0 -39 o-Xylene 104 90 58 -130 14 0 -38 Methyl -t -Butyl Ether (MTBE) 108 95 45-147 13 0 -25 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX:, (714) 894 -7501 alscience M nvironrnental I, aboratories, Inc. Glossary of Terms and Qualifiers Work Order Number: 03 -12 -0697 Qualifier Definition D The sample data was reported from a diluted analysis. E Concentration exceeds the calibration range. J Analyte was detected at a concentration below the reporting limit. Reported value is estimated. ND Not detected at indicated reporting limit. 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 -- FAX: (714) 894 -7501 torlaa Inc- WORK ORDER #: [jn3 - Fil N - aN®M Cooler 0 of SAMPLE RECEIPT FORM CLIENT:b4'if 1 1 DATE: 12/ (I Z a-) TEMPERATURE - SAMPLES RECEIVED BY: CALSCIENCE COURIER: Chilled, cooler with temperature blank provided. Chilled, cooler without temperature blank. Chilled and placed in cooler with wet ice. Ambient and placed in cooler with wet ice. Ambient temperature. C Temperature blank. LABORATORY (Other than Caliscience Courier) C Temperature blank. C IR thermometer. Ambient temperature. QrInitial: CUSTODY SEAL INTACT: Sample(s): Cooler: No (Not Intact) : Not Applicable (N /A): Initial: SAMPLE CONDITION: Yes No N/A Chain -Of- Custody document(s) received with samples ......................... :...... ....... Sample container labels) consistent with custody papers ...................... ....... ....... Sample container(s) intact and good condition ..... ............................... ....... ....... Correct containers for analyses requested .......... ............................... - ..... . Proper preservation noted on sample label( s) ...... ............................... ....... VOA vial(s) free of headspace ......................... ............................... ....... Tedlar bag(s) free of condensation .................... ............................... V ..... . Initial: v CIEIMNVIIMENTM M M M M LABORATORIES, INC. TRell I " iPr60? ucts% Crain O"uS-Foly F?e"cord' DISTRIBUTION: WhRewILh fiml report; Green to File, Yellow and Pink to CnenL . 10116=R-1.1- Equiva Project Manager to be invoiced: M§q-14 9 7 3 3 71 2 6 1 67440LincolnWay DATE: I,,; Z// 3 Garden Grove, CA 92841-1432 0'T`E`CHN1w SERV'IM::::: Anthonyy Palagyi 4T of 714) 895-5494 (714) 894-7501 fax 1 21 11 21 21 4 SAMPLING COMPANY: LOG CODE SITE ADDRESS (Straot and City): GLOBAL 10 NO.: Delta Environmental Consultants KHMM 4050 Gosford Road, Bakersfield ADDRESS: EDF DELIVERABLE TO (R.P—H" P W D—I, IME NO, E-MAIL: CONSULTANT PROJECTNO.: 911 S. Primrose Ave., Monrovia CA Britney Gunderson 626-256-6662 bgundeL%Qaa0JeM PA'4'S050G-1PROJECTCONTACT (H-d PDF Repoli Wy. Katherine Richardson Sampler/Geologist- TELEPHONE: FAX' E4"L 626-256-6662 626-256-6263 krichardsonQdeltaem-corn osc&w kiTURNAROUNDTIME (BUSINESS DAYS): 10 DAYS [:1 5 DAYS 72 HOURS [:148 HOURS 24 HOURS LESS THAN 24 HOURS REQUESTED ANALYSIS LA - RWQCB REPORT FORMAT LIST AGENCY: 6 FIELD NOTES: GC/MS MTBE CONFIRMATION: HIGHEST HIGHEST per BORING ALL t Container /PreservativeSPECIALINSTRUCTIONSORNOTES: CHECK BOX IF EDO IS b1olNEEDED L_J U) or PID Readings Please provide report ppb and ugLL 0 of In or Laboratory Notes LL 6 E m IL aCL CLFieldSampleIdentificationSAMPLING MATRIX NO. OF PE TUREONRECEIPTC* DATE I TIMEoink: CONT. tt 4ef 4I3 11/'4 X X X ASTM 1946 for oxygen, W vapor tKJ nitrogen, methane, wu9'A'5It Voly carbon dioxide, and Anwl- 41m ow LlAem- carbon monoxide. VEW Iflo or Received by: (Sig-t—) Time: Re4ri4Tmhed by: (Signature) Received by: (Sigmime) Date: Thee: Relinquished by: (Signature) RUby: (JO-K.4. Date: Ti- Cb DISTRIBUTION: WhRewILh fiml report; Green to File, Yellow and Pink to CnenL . 10116=R-1.1- alscience AFw nvironmental aboratories, Inc. December 19, 2003 Katherine Richardson KHM / Delta Environmental 911 South Primrose Avenue, Unit K Monrovia, CA 91016 -0000 Subject: Calscience Work Order No.: Client Reference: Dear Client: hn...ry4 v & "s 03 -12 -0792 4050 Gosford Rd., Bakersfield, CA Enclosed is an analytical report for the above - referenced project. The samples included in this report were received 12/12/2003 and analyzed in accordance with the attached chain -of- custody. Unless otherwise noted, all analytical testing was accomplished in accordance with the guidelines established in our Quality Assurance Program Manual, applicable standard operating procedures, and other related documentation. The original report of any subcontracted analysis is provided herein, and follows the standard Calscience data package. The results in this analytical report are limited to the samples tested and any reproduction thereof must be made in its entirety. If you have any questions regarding this report, please do not hesitate to contact the undersigned. Sincerely, als ce E v' onmental Michael J. Crisostomo orat ie , Inc. Quality Assurance Manager L Le roj anager 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX: (714) 894 -7501 alscience Awff nvironrnental L aboratories, Inc. Analy- cahReport Page ":.l,- of Z 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 a1science M-nVironmental Alv aboratories, Inc. AnalyI A&p6rtIda:. 26 2ne7 LABORATORY ID: 03-12-0792 Method: ASTM D-1946 Fixed Gases Matrix: Air/Vapor CLIENT: KHM / Delta. Environmental PROJECT: 4050 Gosford Rd., Bakersfield, CA Sathple ID 02+Argon N2 CH4 co CO2 Dilution Date N N N N N Factor Analyzed SVE-4A Ext Mid Pt. 14.1 77.9 ND ND 8.0 1 12112/03 Method Blank ND ND ND ND ND 1 12/12/03 lReporting Limit: 0.1 0.1 0.1 0.1 0.1 Quality Assurance and Control Information Laboratory Duplicate Sample Batch ID: 031212 0049 P. 1. !q . a . to ERR;:::::: Control nc; ::,: Limits Oxygen + Argon 0-30 Nitrogen 0-30 I Carbon Dioxide 0-30 Laboratory.Notes All results are reported in percent by volume. Key: 02=Oxygen, N2=Nitrogen, CH4=Methane, CO=Carbon Monoxide, CO2=Carbon Dioxide, NA=Not Applicable, ND=Not Detected at the reporting level 7440 Lincoln Way, Garden Grove, CA 92841-1427 - TEL: (714) 895-5494 - FAX: (714) 894-7501 Galscience nvironmental rmw aboratories, Inc. Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 1. 4: alscience nvironmental Analytical Report `01waboratories, Inc. KHM / Delta Environmental Date Received: 12/12/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0792 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 1 of 1 Lab Sample Date Date Date Client Sample Number Number Collected Matrix Prepared Analyzed. QC Batch ID S1LE A Ezt Mid Pty 03 -0792, r 12/11x/03:' , A „ N/A^ 2/12103 031212L01. Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 1000 160 325 ppb (v /v) Methyl -t -Butyl Ether (MTBE) 240000 650 325 E ppb (v /v) Toluene 950 160 325 ppb (v /v) Tert-Butyl Alcohol (TBA) 17000 650 325 ppb (v /v) Ethylbenzene 860 160 325 ppb (v /v) Diisopropyl Ether (DIPE) ND 650 325 ppb (v /v) p /m- Xylene 4400 330 325 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) 2900 650 325 ppb (v /v) o- Xylene 1300 160 325 ppb (v /v) Tert Amyl Methyl Ether (TAME) ND 650 325 ppb (v /v) SN -mss7°vY' i'.TRr g sw- r=%`°a '°'3'r4" "'M'r ai,..- SVE 4AEMidPt, y 03;12- 07921 12/1 1703Air N/A „1212103 031212L01 Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 1600000 260000 130000 ppb (v /v) r W'""' c .',3' ."'q Y 4 Method Blank, 097, 91002i;2,,609 a12/12/03s 031212L01 wc ,r_ °' ev' &- fr--._ - Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.50 1 ppb (v /v) Methyl -t -Butyl Ether (MTBE) ND 2.0 1 ppb (v /v) Toluene ND 0.50 1 ppb (v /v) Tert-Butyl Alcohol (TBA) ND 2.0 1 ppb (v /v) Ethylbenzene ND 0.50 1 ppb (v /v) Diisopropyl Ether (DIPE) ND 2.0 1 ppb (v /v) p /m- Xylene ND 1.0 1 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 2.0 1 ppb (v /v) o-Xylene ND 0.50 1 ppb (v /v) Tert-Amyl- Methyl Ether (TAME) ND 2.0 1 ppb (v /v) 1 . 1 RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers t . A 7440 Lincoln Way, Garden Grove, CA 92841 -1427 TEL: (714) 895 -5494 • FAX: (714) 894 -7501 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX: (714) 894 -7501 i alscience Quality Control -LCS /LCS Duplicateenvironmental aboratories, Inc. KHM / Delta Environmental Date Received: 12/12/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0792 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 1 Project: 4050 Gosford Rd., Bakersfield, CA Date Date LCS /LCSD Batch Quality Control Sample ID Matrix Instrument Prepared Analyzed Number 097-09 UD22 HH,N /A609 , ,Air UGC /MS ,Y 12/;1?J03, Y031212L01, Parameter LCS %REC LCSD %REC %REC CL RPD RPD CL Qualifiers Benzene 86 86 61 -121 0 0 -37 Toluene 89 90 60 -120 2 0 -39 Ethylbenzene 90 91 61 -127 1 0 -38 p /m- Xylene 90 90 57 -129 0 0 -39 o-Xylene 92 92 58 -130 0 0 -38 Methyl -t -Butyl Ether (MTBE) 90 92 45-147 2 0 -25 1 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX: (714) 894 -7501 alscience nvironmental im aboratories, Inc. Glossary of Terms and Qualifiers Work Order Number: 03 -12 -0792 Qualifier Definition D The sample data was reported from a diluted analysis. E Concentration exceeds the calibration range. ND Not detected at indicated reporting limit. 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX: (714) 894 -7501 WORK ORDER #: ME - 02 - FEEE Cooler of SAMPLE RECEIPT FORM CLIENT: y n^'il S ci/ -.s DATE: TEMPERATURE - SAMPLES RECEIVED BY: CALSCIENCE COURIER: Chilled, cooler with temperature blank provided. Chilled, cooler without temperature blank. Chilled and placed in cooler with wet ice. Ambient and placed in cooler with wet ice. Ambient temperature. C Temperature blank. LABORATORY (Other than Calscience Courier): C Temperature blank. C IR thermometer. Ambient temperature. Initial: i& CUSTODY SEAL INTACT: Sample(s): Cooler: No (Not Intact) : Not Applicable (N /A): L/ Initial:- SAMPLE CONDITION: Yes No N/A Chain -Of- Custody document(s) received with samples ......................... J ....... Sample container label(s) consistent with custody papers ..................... Sample container(s) intact and good condition ............ I ...................... Correct containers for analyses requested .......... ............................... ....... ....... Proper preservation noted on sample label( s) ...... ............................... ....... ....... VOA vial(s) free of headspace ......................... ............................... Tedlar bag(s) free of condensation .................... ............................... ....... ....... Initial:_ COMMENTS: 1 MCIEMNVIMENTW LABORATORIES, INC. TROUT iPr6Tucts0% Crain 0"usfoly F?e"cord' 7440 Lincoln Way Garden Grove, CA 92841-1432 714) 895-5494 (714) 894-7501 fax I Equiva Project Manager to be invoiced: Anthony Palagyi DATE: PAGE: of 3 31 71 21 6 6 1 21 11 21 21 4 SAMPLING COMPANY: Delta Environmental Consultants LOGCODE. KHMM SmE ADDRESS st—t WCity): 4050 Gosford Road, Bakersfield OLOBAL 10NO.: ADDRESS: 911 S. Primrose Ave., Monrovia CA EDF DeUVrRABLE TO (R.-W P.Ay DW ): Britney Gunderson E NO.: 1626-25"662 EMAIL: bqunderson&deIiaenv-com CDN" CONSULTANT PROJECT NO.: PA405OG-1PROJECTGONTACI (P-d-" or PDF Ppt Katherine Richardson Sampler /Geologist: 56f)r zTELEPHONE: 626-256- 6662 FAY 626-256-6263 E-MAIL: k6abardson@Aeltaeny-con TURNAROUND TIME (BUSINESS DAYS): El 10 DAYS 5 DAYS 72 HOURS F-1 48 HOURS 24 HOURS [-] LESS THAN 24 HOURS REQUESTED ANALYSIS LA - RWQCB REPORT FORMAT UST AGENCY: 0 r 0 ro 3, 6 0" CLM L9 0DLM FIELD NOTES: Container/Preservative or PID Readings or Laboratory Notes GC/MS MTBE CONFIRMATION: HIGHEST HIGHEST per BORING ALL SPECIAL INSTRUCTIONS OR NOTES: CHECKBOX IF EDD IS NOT NEEDED LJ Phase provide re oprtinpoloandna /L ysg:: Old, Field Sample Identification SAMPLING MATRIX NO OF CONT. TEMPERATURE ON RECEIPT C* 7 4(4-A 14/11/67 ISY0 Vapor X X X ASTM 1946 for oxygen, nitrogen, methane, carbon dioxide, and carbon monoxide. R-ef-d bir. Mime) 4 So Date: I Time: V 1) I ReHEWmhod by: (Signature) F--.Weddy: (Sbmte) Date: Thee: RelirMutshod by'. (Sigmiure) Receivedby (Sig—t—) Nt.: Thee: DISTRIBUTION: White withfinal report, Greento File, Yellow and Pink toC%nt. 19116MO Revtsion alscience A nvironmental aboratories, Inc. December 22, 2003 Katherine Richardson KHM / Delta Environmental 911 South Primrose Avenue, Unit K Monrovia, CA 91016 -0000 Subject: Calscience Work Order No.: Client Reference: Dear Client: 03 -12 -0890 4050 Gosford Rd., Bakersfield, CA Enclosed is an analytical report for the above - referenced project. The samples included in this report were received 12/13/2003 and analyzed in accordance with the attached chain -of- custody. Unless otherwise noted, all analytical testing was accomplished in accordance with the guidelines established in our Quality Assurance Program Manual, applicable standard operating procedures, and other related documentation. The original report.of any subcontracted analysis is provided herein, and follows the standard Calscience data package. The results in this analytical report are limited to the samples tested and any reproduction thereof must be made in its entirety. If you have any questions regarding this report, please do not hesitate to contact the undersigned. Wceonmental Michael J Crisostomo Quality Assurance Manager e ro anager 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX: (714) 894 -7501 W. alscience A nvironmental aboratories, Inc. Analytical Report 4 .s p , 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alscience M nvironmental Aw aboratories, Inc. Analytical Report LABORATORY ID: 03-12-0890 Method: ASTM D -1946 Fixed Gases Matrix: Air/Vapor CLIENT: KHM / Delta Environmental PROJECT: 4050 Gosford Rd., Bakersfield, CA Sample ID 02 +Argon N2 CH4 CO CO2 Dilution Date N N N N N Factor Analyzed SVE -4A EXT END 15.6 77.5 ND ND 6.9 1 12/13/03 Method Blank ND, ND ND ND ND 1 12/13/03 Reporting Limit: 0.1 0.1 0.1 0.1 0.1 Quality Assurance Control Information Laboratory Duplicate Sample Batch ID: 031213 Satii`pe R.upieae Pp' Control Coic "` Can?i Q i Limits Oxygen + Argon 21:;4;:; [2IF 3 ': 0 -30 Nitrogen 83` ::::::::::::::::x:6:3'::::::!:: 0 0 -30 Carbon Dioxide 5 €dff €€ 0 -30 Laboratory All results are reported in percent ( %) by volume. Key: Oz= Oxygen, N2= Nitrogen, CH4= Methane, CO= Carbon Monoxide, CO2= Carbon Dioxide, NA =Not Applicable, ND =Not Detected at the reporting level 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alscience Xw nvironmental Analytical Report Aw aboratories, Inc. KHM / Delta Environmental Date Received: 12/13/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0890 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 1 of 1 Client Sample Number Result RL Lab Sample Number Date Collected Matrix Date Prepared Date Analyzed QC Batch ID ri VE4A EXTEND 012-0890 - 1;12/12/0 Alr,. N/A_121.13Z03 03121301win 0.50 ppb (v /v) Methyl -t -Butyl Ether (MTBE) ND 2.0 1 ppb (v /v) Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 770 110 220 ppb (v /v) Methyl -t -Butyl Ether (MTBE) 88000 440 220 E ppb (v /v) Toluene 840 110 220 ppb (v /v) Tert-Butyl Alcohol (TBA) 3200 440 220 ppb (v /v) Ethylbenzene 680 110 220 ppb (v /v) Diisopropyl Ether (DIPE) ND 440 220 ppb (v /v) p /m- Xylene 3400 220 220 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 440 220 ppb (v /v) o-Xylene 950 110 220 ppb (v /v) Tert-Amyl- Methyl Ether (TAME) ND 440 220 ppb (v /v) Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 470000 44000 22000D ppb (v /v) Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.50 1 ppb (v /v) Methyl -t -Butyl Ether (MTBE) ND 2.0 1 ppb (v /v) Toluene ND 0.50 1 ppb (v /v) Tert-Butyl Alcohol (TBA) ND 2.0 1 ppb (v /v) Ethylbenzene ND 0.50 1 ppb (v /v) Diisopropyl Ether (DIPE) ND 2.0 1 ppb (v /v) p /m- Xylene ND 1.0 1 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 2.0 1 ppb (v /v) o- Xylene ND 0.50 1 ppb (v /v) Tert- Amyl - Methyl Ether (TAME) ND 2.0 1 ppb (v /v) Method Blanka; ; R_ 09 002.2 615 NIA Air N7A t X12/1'5/03 03215L01,`. LL1) 97 Par meter Result RL DF Qua] Units Parameter Result RL DF Qual Units Benzene ND 0.50 1 ppb (v /v) Methyl -t -Butyl Ether (MTBE) ND 2.0 1 ppb (v /v) Toluene ND 0.50 1 ppb (v /v) Tert-Butyl Alcohol (TBA) ND 2.0 1 ppb (v /v) Ethylbenzene ND 0.50 1 ppb (v /v) Diisopropyl Ether (DIPE) ND 2.0 1 ppb (v /v) p /m- Xylene ND 1.0 1 ppb (v /v) Ethyl -t -Butyl Ether (ETBE) ND 2.0 1 ppb (v /v) o-Xylene ND 0.50 1 ppb (v /v) Tert-Amyl- Methyl Ether (TAME) ND 2.0 1 ppb (v /v) RL - Reporting Limit , DF - Dilution Factor , Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 alscience r A nvironmental Quality Control - LCS /LCS Duplicate f aboratories, Inc. KHM / Delta Environmental Date Received: 12/13/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0890 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Date Date LCS /LCSD Batch Quality Control Sample ID Matrix Instrument Prepared Analyzed Number Parameter LCS %REC LCSD %REC REC CL RPD RPD CL Benzene 89 94 61 -121 5 0 -37 Toluene 90 92 60 -120 3 0 -39 Ethylbenzene 92 92 61 -127 0 0 -38 p /m- Xylene 92 91 57 -129 1 0 -39 o- Xylene 92 92 58-130 0 0 -38 Methyl -t -Butyl Ether (MTBE) 95 95 45 -147 0 0 -25 Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - . FAX: (714) 894 -7501 aIscience r` ; nvironmental Quality Control - LCS /LCS-Duplicate L f =T A ma w aboratories, Inc. KHM / Delta Environmental Date Received: 12/13/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0890 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Date Date LCS /LCSD Batch Quality Control Sample ID Matrix Instrument Prepared Analyzed Number. Parameter LCS %REC LCSD %REC REC CL RPD RPD CL Benzene 93 101 61 -121 9 0 -37 Toluene 97 85 60 -120 13 0 -39 Ethylbenzene 100 94 61 -127 7 0 -38 p /m- Xylene 102 93 57 -129 9 0 -39 o-Xylene 97 94 58-130 3 0 -38 Methyl -t -Butyl Ether (MTBE) 108 102 45-147 5 0 -25 Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 - TEL: (714) 895 -5494 - FAX: (714) 894 -7501 i, alscience Kw- nvironmental Glossary of Terms and Qualifiers s Aw aboratories, Inc. 1 Work Order Number: 03 -12 -0890 Qualifier Definition D The sample data was reported from a diluted analysis. E Concentration exceeds the calibration range. ND Not detected at indicated reporting limit. L 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 Car . iro v f7C tCLIENT: WORK ORDER #: ME - Fj]M- HEEID] Cooler of SAMPLE RECEIPT FORM TEMPERATURE — SAMPLES RECEIVED BY: CALSCIENCE COURIER: Chilled, cooler with temperature blank provided. Chilled, cooler without temperature blank. Chilled and placed in cooler with wet ice. Ambient and placed in cooler with wet ice. Ambient temperature. C Temperature blank. DATE: /2-//3/0-5 LABORATORY (Other than Calscience Courier): C Temperature blank. C I R thermometer. Ambient temperature. re 9(0 Initial: CUSTODY SEAL INTACT: Sample(s): Cooler: No (Not Intact) : Not Applicable (N /A): Initial: SAMPLE CONDITION: Yes Chain -Of- Custody document(s) received with samples ......................... ....... Sample container label(s) consistent with custody papers ..................... J Sample container(s) intact and good condition .... ............................... Correct containers for analyses requested .......... ............................... Proper preservation noted on sample label( s) ...... ............................... ....... VOA vial(s) free of headspace ......................... ............................... ....... Tedlar bag(s) free of condensation :................... ............................... %...... . COMMENTS: No N/A Initial: MCIE NVIIMENTM LABORATORIES. INC. 04! M%9e11WPPrWctM ClEn MuslToy FPecMbrdM M M 7440 Lincoln Way Garden Grove, CA 92841-1432 895-5494 (714) 894-7501 fax Equiva Project Manager to be Invoiced: Anthony Palagyi INRM DATE: PAGE: of 9 7 31 31 71 216 6 r4' R (T0 Y •( 714) 1 21 11 21 21 4 SAMPLINGCOMPANY: Delta Environmental Consultants LOO CODE KHMM SITE ADDRESS (Streat and City): 4050 Gosford Road, Bakersfield GLOBAL IDNO.: ADDRESS: 911 S. Primrose Ave., Monrovia CA EDF DELNERABLE TO (R-pnWb1e Poly w O&W): Britney Gunderson 1PHONE NO, 626-256-6662 EMAIL: hgundersQp&deRa, CONSULTANT PROJECT 0, PA4,S05013-1PROJECTCONTACT (14 m PDF Rp W): Katherine Richardson Sampler/Geologist: Fz: TELEPHO"E, 626-256-6662 FAX: 626-256-6263 E-MAIL: kdcbardsonQdel1aeoLwm TURNAROUND TIME (BUSINESS DAYS): El 10 DAYS 5 DAYS 72 HOURS F1 48 HOURS 24 HOURS LESS THAN 24 HOURS REQUESTED ANALYSIS LA - RWQCB REPORT FORMAT C1. UST AGENCY: J 6 co 00. M U) a 0CLM A0 FIELD NOTES: Container/Preservative or PID Readings or Laboratory Notes GC/MS MTBE CONFIRMATION: HIGHEST HIGHEST per BORING ALL SPECIAL INSTRUCTIONS OR NOTES: CHECK BOX IF EDD IS btQ1 NEEDED LJ Please provide report ppb and uq/L Field Sample Identification SAMPLING KATRV NO. OF CONT. TEMPERATURE ON RECEIPT C' DATE I TIME Ve -'y p1) Vapor X X X x ASTM 1946 for oxygen, nitrogen, methane, carbon dioxide, and carbon monoxide. R.1inq b UM)t Received by: (Signature) Dail.: Tl-- RUfqdi.hed by: (Sig lure) ReceNed by: (Signature) Date: T1—: R.qnq.lehed by: (Signature) Received by: (Signature) Date: 3 10,3 T1_: DISTRIBUTION: Whitewith Mal report, Green to Fft, Yellow and PinktoClient. alscience 1 10 nvironmental = aboratories, Inc. 1 January 7, 2004 1 Mr. Oscar Valdez Delta Environmental 911 South Primrose Avenue, Unit K Monrovia, CA 91016 Re: TO -15 Results 1 Dear Mr. Valdez: Enclosed, please find the revised TO -15 analytical data for CEL work orders 03 -12 -0890, 03 -12 -0792 1 and 03 -12 -0697. The units have been modified from ppb (v /v) to ug /L. These pages are direct replacements for the previously sent data. Please exchange as appropriate. If there are any questions or if I can be of further assistance, please feel free to call at 714/895 -5494. 1 Yours ve ruly, 1 Cals ence vironmental L orat , Inc. L Le 1 roject Manager Enclosures B 1 1 1 7440 Lincoln Way, Garden Grove, CA 92841 -1427 TEL: (714) 895 -5494 FAX: (714) 894 -7501 alscience bk C nvironmental w Analytical Reportf. row aboratories, Inc. KHM / Delta Environmental Date Received: 12/13/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0890 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA- Method Blanit«s, `° 097 =09 -002 =2 fi 12 N14 Air 1N /A . - ° r12/1'3/03 r 031213L01 ga__mw Page 1 of 1 Result RL DF Qual Units Parameter Result Lab Sample Date Date Date Benzene Client Sample Number Number Collected Matrix Prepared Analyzed_ QC Batch ID ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 3S.NL S - 4- F j§T € l -, ;"`. rX 'Y '` h f i &1 t v4 i(rv' -e` y ug /L SVE-4A EXT END_,03120890T I 12/12/03Ra_ARtrcN1A b ,12/A3703 031213L01. Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 2.5 0.3 220 ug /L Methyl -t -Butyl Ether (MTBE) 320 1 220 E ug /L Toluene 3.2 0.4 220 ug /L Tert-Butyl Alcohol (TBA) 9.7 1.3 220 ug /L Ethylbenzene 2.9 0.4 220 ug /L Diisopropyl Ether (DIPE) ND 1.8 220 ug /L p /m- Xylene 15 0.96 220 ug /L Ethyl -t -Butyl Ether (ETBE) ND 1.8 220 ug /L o-Xylene 4.1 0.4 220 ug /L Tert- Amyl - Methyl Ether (TAME) ND 2.8 220 ug /L 0.0084 Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 1700 160 22000D ug /L Parameter Benzene Toluene Ethylbenzene o- Xylene 1 Result Method Blanit«s, `° 097 =09 -002 =2 fi 12 N14 Air 1N /A . - ° r12/1'3/03 r 031213L01 ga__mw Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L Toluene ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 0.0061 1 ug /L Ethylbenzene' ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L p /m- Xylene ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L o-Xylene ND 0.0022 1 ug /L Tert-Amyl -Methyl Ether (TAME) ND 0.013 1 ug /L ug /L ce .. U97.090022fi15 NlAaN / A3 121{1.5/ 3CK03215L01_ a Parameter Benzene Toluene Ethylbenzene o- Xylene 1 Result RL DF Qual Units Parameter Result RL DF Qual Units ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 0.0061 1 ug /L ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L ND 0.0022 1 ug /L Tert- Amyl - Methyl Ether (TAME) ND 0.013 1 ug /L RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alscience iv nvironmental , Analytical Report aw aboratories, Inc. KHM / Delta Environmental Date Received: 12/12/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0792 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 1 of 1 Lab Sample Date Date Date Client Sample Number Number Collected Matrix Prepared Analyzed QC Batch ID a, a.! ' S1/E, A Ext Mid P .;<.h x - , y. - _ - u N 27/ 71,d27¢03 w; ,". e-"r ° t K V1, . _ 0-12- 792 =I ' ' •"'' ". t 031212L01 Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 3.3 0.5 325 ug /L Methyl -t -Butyl Ether (MTBE) 860 2 325 E ug /L Toluene 3.6 0.6 325 ug /L Tert-Butyl Alcohol (TBA) 51 2 325 ug /L Ethylbenzene 3.7 0.7 325 ug /L Diisopropyl Ether (DIPE) ND 2.7 325 ug /L p /m- Xylene 19 1 325 ug /L Ethyl -t -Butyl Ether (ETBE) 12 2 325 ug /L o-Xylene 5.6 0.7 325 ug /L Tert-Amyl Methyl Ether (TAME) ND 4.2 325 ug /L r "$" ""'^R s'!T s . „ a" : .=bAsi' "t P ' a 1 e '+ '` r ,. •inuR ,b/.1,*. 3 „ 'v ' aAtr ?sue .ii.: . 4-t .. _. ,N ,,; "r-12J12101 Ay,.. 3%132 01, 4i11/003-2 0792 1. RS MP " ' 9 t Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 5900 940 13000m ug /L MetfioBank' 1"4k 097 09OU22 °609, A N l ' E Air 'f NIA 12%10021.2L01x :4 ..s, :. ,. b,. rk>N /A Parameter Result RL DF Qua[ Units Parameter Result RL DF Qual Units Benzene ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L Toluene ND 0.0019 1 ug /L Tert-Buty] Alcohol (TBA) ND 0.0061 1 ug /L Ethylbenzene ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L p /m- Xylene ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L o- Xylene ND 0.0022 1 ug /L Tert- Amyl - Methyl Ether (TAME) ND 0.013 1 ug /L 1 RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alscience L n vironmental Analytical Report w aboratones; Inc. KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0697 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 1 of 3 Y .. [._ _- .. Ate' yol ei 4` l ° t"ir Yl v-rl[e a. Lab 9Q YY.T Jj..at i Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 290 5 800 E,D ug /L Tert-Butyl Alcohol (TBA) 45 4 800 D ug /L Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 240 23 3200 D ug /L VEW "56 St p End 0 Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.20 125 ug /L Methyl -t -Butyl Ether (MTBE) 130 0.90 125 E ug /L Toluene 0.25 0.24 125 ug /L Tert-Butyl Alcohol (TBA) 31 0.76 125 ug /L Ethylbenzene ND 0.27 125 ug /L Diisopropyl Ether (DIPE) ND 1.0 125 ug /L p /m- Xylene 0.44 0.54 125 J ug /L Ethyl -t -Butyl Ether (ETBE) ND 1.0 125 ug /L o- Xylene ND 0.27 125 ug /L Tert-Amyl- Methyl Ether (TAME) ND 1.6 125 ug /L Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 390 } 18 2500 D ug /L a '- " r` r , a • -L t r;.i s"au`4..,'E' -t, VEW5A Step Strt 12 -0697 3fix*:12/09/03 h Air"NTA4 < 12/,11103031211L011" t Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 24 5 3500 ug /L Methyl -t -Butyl Ether (MTBE) 3600 25 3500 E ug /L Toluene 9.2 6.6 3500 ug /L Tert-Butyl Alcohol (TBA) 180 21 3500 ug/L Ethylbenzene 28 7 3500 ug /L Diisopropyl Ether (DIPE) ND 29 3500 ug /L p /m- Xylene 120 15 3500 ug /L Ethyl -t -Butyl Ether (ETBE) ND 29 3500 ug /L o- Xylene 22 7 3500 ug /L Tert- Amyl - Methyl Ether (TAME) ND 45 3500 ug /L RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 Lab Sample DDate Date Date Client Sample Number NNumber CCollected Matrix Prepared Analyzed QQC Batch ID T4 •J Z.+u, mot. •.t P ^k 3 " S - .yg cif a _ Q • - VEW 5BxStepSStart ° 03 1 a 12/09103 y" g A Parameter RResult RL DF Qual Units PParameter Result RL DDF Qual Units Benzene NND 0.13 80 ug /L MMethyl -t -Butyl Ether (MTBE) 99 0.58 880 E ug /L Toluene 00.17 0.15 80 ug /L TTert-Butyl Alcohol (TBA) 46 0.49 880 E ug /L Ethylbenzene NND 0.17 80 ug /L DDiisopropyl Ether (DIPE) ND 0.67 880 ug /L p /m- Xylene 00.31 0.35 80 J ug /L EEthyl -t -Butyl Ether (ETBE) ND 0.67 880 ug /L o-Xylene NND 0.17 80 ug /L TTert Amyl Methyl Ether (TAME) ND 1.0 880 ug /L 0320697'I 1 09%03{+ Ai 4N /A Y12110303121 1L07r Vll ' Ste ,Start 0 w: aa Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 240 23 3200 D ug /L VEW "56 St p End 0 Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.20 125 ug /L Methyl -t -Butyl Ether (MTBE) 130 0.90 125 E ug /L Toluene 0.25 0.24 125 ug /L Tert-Butyl Alcohol (TBA) 31 0.76 125 ug /L Ethylbenzene ND 0.27 125 ug /L Diisopropyl Ether (DIPE) ND 1.0 125 ug /L p /m- Xylene 0.44 0.54 125 J ug /L Ethyl -t -Butyl Ether (ETBE) ND 1.0 125 ug /L o- Xylene ND 0.27 125 ug /L Tert-Amyl- Methyl Ether (TAME) ND 1.6 125 ug /L Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 390 } 18 2500 D ug /L a '- " r` r , a • -L t r;.i s"au`4..,'E' -t, VEW5A Step Strt 12 -0697 3fix*:12/09/03 h Air"NTA4 < 12/,11103031211L011" t Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 24 5 3500 ug /L Methyl -t -Butyl Ether (MTBE) 3600 25 3500 E ug /L Toluene 9.2 6.6 3500 ug /L Tert-Butyl Alcohol (TBA) 180 21 3500 ug/L Ethylbenzene 28 7 3500 ug /L Diisopropyl Ether (DIPE) ND 29 3500 ug /L p /m- Xylene 120 15 3500 ug /L Ethyl -t -Butyl Ether (ETBE) ND 29 3500 ug /L o- Xylene 22 7 3500 ug /L Tert- Amyl - Methyl Ether (TAME) ND 45 3500 ug /L RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 390 } 18 2500 D ug /L a '- " r` r , a • -L t r;.is"au`4..,'E' -t, VEW5A Step Strt 12 -0697 3fix*:12/09/03 h Air"NTA4 < 12/,11103031211L011" t Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 24 5 3500 ug /L Methyl -t -Butyl Ether (MTBE) 3600 25 3500 E ug /L Toluene 9.2 6.6 3500 ug /L Tert-Butyl Alcohol (TBA) 180 21 3500 ug/L Ethylbenzene 28 7 3500 ug /L Diisopropyl Ether (DIPE) ND 29 3500 ug /L p /m- Xylene 120 15 3500 ug /L Ethyl -t -Butyl Ether (ETBE) ND 29 3500 ug /L o- Xylene 22 7 3500 ug /L Tert- Amyl - Methyl Ether (TAME) ND 45 3500 ug /L RL - Reporting Limit DF - Dilution Factor Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -75017440LincolnWay, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 alscience A nvironmental Analytical Report LF aboratories, Inc. KHM / Delta Environmental Date Received: 12/11/03 911 South Primrose Avenue, Unit K Work Order No: 03 -12 -0697 Monrovia, CA 91016 -0000 Preparation: N/A Method: EPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA Page 2 of 3 Lab Sample Date Date Date Client Sample Number Number Collected Matrix Prepared Analyzed QC Batch ID EW= 5AStepStartcEe ,w- 03 2-069Z3 12/09/03 r NIA112703 031212L01 - Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 17000 1000 14000CD ug /L yam. ;:o s 'tf.:'",.z,': '- - 44 - a•- 'I :'m"l': f w'V :.W Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.056 35 ug /L Methyl -t -Butyl Ether (MTBE) 65 0.25 35 E ug /L Toluene 0.16 0.06 35 ug/L Tert-Butyl Alcohol (TBA) 33 0.21 35 E ug /L Ethylbenzene 0.23 0.07 35 ug /L Diisopropyl Ether (DIPE) ND 0.29 35 ug /L p /m- Xylene 1.1 0.1 35 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.29 35 ug /L o- Xylene 0.24 0.07 35 ug /L Tert- Amyl - Methyl Ether (TAME) ND 0.45 35 ug /L 1 I RL - Reporting Limit , DF - Dilution Factor , Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 I &VtW -46 StepSt rt i k t 03 12 069,7 4 g;' J2R /03 _Y,At " a -N/%, 'r+ 1Z/1:1/03- ,.031211L 1 Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 280 2 350 E,D ug /L Tert-Butyl Alcohol (TBA) 39 2 350 D ug /L t of i - ti.''S'SY ,°. i''''vi`; .. VEW-46 Step Start "' X403 12 -0697 4 112109 /03rAir N)A 121A•2CU3031212L01 Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 270 50 7000 D ug /L UEW4BtStep Ends 44 3 z tJ /A 12/11703 %031211L010697512/09/034..031,2 sF r Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.024 15 ug /L Methyl -t -Butyl Ether (MTBE) 22 0.11 15 E ug /L Toluene 0.091 0.028 15 ug /L Tert-Butyl Alcohol (TBA) 21 0.091 15 E ug /L 0.11 0.03 15 ug /L Diisopropyl Ether (DIPE) ND . 0.13 15 ug /LEthylbenzene p /m- Xylene 0.49 0.06 15 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.13 15 ug /L o-Xylene 0.11 0.03 15 ug /L Tert- Amyl - Methyl Ether (TAME) ND 0.19 15 ug /L y y i XTy :a -` VEWT -4B Step End 03 12 -0697 5 12/09 03 Air x hN/A'12/92103 031211L01^ e:irtt s.. .,.,., r........- sue._ <:__u .,a Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 110 1 150 E,D ug /L Tert-Butyl Alcohol (TBA) 35 0.91 150 D ug /L VE1N.4BStep ^:End. µ3 03112 0697.51 lUr :6 NIA1211210 031212L01 a12%09/03, : _ Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 120 22 3000 D ug /L 1 I RL - Reporting Limit , DF - Dilution Factor , Qual - Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841 -1427 • TEL: (714) 895 -5494 • FAX: (714) 894 -7501 aiscience AC nwronmental tt ^ Analytical Report aw aboratories, Inc. KHM / Delta Environmental DDate Received: 112/11/03 911 South Primrose Avenue, Unit K WWork Order No: 003 -12 -0697 Monrovia, CA 91016 -0000 PPreparation: NN/A Method: EEPA TO -15 Project: 4050 Gosford Rd., Bakersfield, CA PPage 3 of 3 Lab Sample Date Date DDate Client Sample Number NNumber Collected Matrix Prepared AAnalyzed QC Batch ID 03,12 -0697 =6 °12109103 ar *NTA;.12111%03 03,121,1 L01 = Parameter Result RL DDF Qual Units Parameter Result RRL DF Qual Units Benzene ND 1.0 6650 ug /L Methyl -t -Butyl Ether (MTBE) 1200 44 650 E ug /L Toluene ND 1.2 6650 ug /L Tert-Butyl Alcohol (TBA) 200 33 650 ug /L Ethylbenzene ND 1.4 6650 ug /L Diisopropyl Ether (DIPE) ND 55.4 650 ug /L p /m- Xylene 1.5 2.8 6650 J ug /L Ethyl -t -Butyl Ether (ETBE) ND 55.4 650 ug /L, o-Xylene ND 1.4 6650 ug /L Tert Amyl Methyl Ether (TAME) ND 88.4 650 ug /Lo i._. .?' ". '+ ">^i'.i.', i ; -' i,`ti,Zolky-W .i Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 7200 940 13000CD ug /L vEW= 4A7Ezt¢5tait X03 12 -0697 7 x cr a %.w 031211 L0 Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene 2.7 2.4 1500 ug /L Methyl -t -Butyl Ether (MTBE) 2200 11 1500 E ug /L 1 Toluene ND 2.8 1500 ug /L Tert-Butyl Alcohol (TBA) 120 9 1500 ug /L Ethylbenzene ND 3.3 1500 ug /L Diisopropyl Ether (DIPE) ND 13 1500 ug /L p /m- Xylene 8.3 6.5 1500 ug /L Ethyl -t -Butyl Ether (ETBE) ND 13 1500 ug /L o-Xylene ND 3.3 1500 ug /L Tert- Amyl - Methyl Ether (TAME) ND 19 1500 ug /L r_ :312 orsN %A1 12%03 i ryEV1l; A€Ext SOOG .. 4.: ,r a , 12/09/03 !r.,scrk'r : 031212L01 Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 14000 1100 150001D ug /L Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L Toluene ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 0.0061 1 ug /L Ethylbenzene ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L p /m- Xylene ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L o-Xylene ND , BlaM n kn k- NOyD 0 . x 0 022 " 091 7 -09 0ug / L Tert- Amyl- { Methyl E Ayths er (TAME) ND 0.01t 3 x 1 u0g 1 / L NTA2/1 031.21`N/A0 Parameter , F 4 Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L Toluene ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 0.0061 1 ug /L Ethylbenzene ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L p /m- Xylene ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L o-Xylene ND 0.0022 1 ug /L Tert-Amyl- Methyl Ether (TAME) ND 0.013 1 ug /L RL - Reporting Limit , DF - Dilution Factor , Qual - Qualifiers 7440 Lincoln Way, Garden Grove, GA 92841 -1427 • TEL: (714) 895 -5494 a FAX: (714) 894 -7501 Parameter Result RL DF Qual Units Methyl -t -Butyl Ether (MTBE) 14000 1100 150001D ug /L Parameter Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L Toluene ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 0.0061 1 ug /L Ethylbenzene ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L p /m- Xylene ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L o-Xylene ND , BlaM n kn k- NOyD 0 . x 0 022 " 091 7 -09 0ug / L Tert- Amyl- { Methyl E A yths er (TAME) ND 0.01t 3 x 1 u0g 1 / L NTA2/1 031.21`N/A0 Parameter , F 4 Result RL DF Qual Units Parameter Result RL DF Qual Units Benzene ND 0.0016 1 ug /L Methyl -t -Butyl Ether (MTBE) ND 0.0072 1 ug /L Toluene ND 0.0019 1 ug /L Tert-Butyl Alcohol (TBA) ND 0.0061 1 ug /L Ethylbenzene ND 0.0022 1 ug /L Diisopropyl Ether (DIPE) ND 0.0084 1 ug /L p /m- Xylene ND 0.0043 1 ug /L Ethyl -t -Butyl Ether (ETBE) ND 0.0084 1 ug /L o-Xylene ND 0.0022 1 ug /L Tert-Amyl- Methyl Ether (TAME) ND 0.013 1 ug /L RL - Reporting Limit , DF - Dilution Factor , Qual - Qualifiers 7440 Lincoln Way, Garden Grove, GA 92841 -1427 • TEL: (714) 895 -5494 a FAX: (714) 894 -7501 RL - Reporting Limit , DF - Dilution Factor , Qual - Qualifiers 7440 Lincoln Way, Garden Grove, GA 92841 -1427 • TEL: (714) 895 -5494 a FAX: (714) 894 -7501