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HomeMy WebLinkAboutUST-REPORT 6/10/1994I I I I I I I I I I I I I I I Earth Systems Consultants Southern California JUN 1 3 1994 By__.____.__ Consulting Engineers and Geologists Earth Systems Consultants Sout h---I~r-~ Califor--I-~i~ REPORT OF FINDINGS FOR SITE CHARACTERIZATION AT BAKEHSF~,r~ COLLEGE TRADES AND INDUSTRIES BU~,rHNG 1801 PANORAMA DRIVE BAI~.I~FmT.rl, CAT,n~ORNIA Prepared by: EARTH SYSTEMS CONSULTANTS 1024 West Avenue M-4 Palmdale, California 93551 (805) 948-7538 June 10, 1994 Project No.: SA-4471-L01 1024 West Avenue M-4 Palmdale, CA 93551 (8O5) 948-7538 F~x (8o5) 94~-7963 TABLE OF CONTENTS REPORT OF SITE CHARACTERIZATION AT BAKERSFIELD COLLEGE TRADES AND INDUSTRIES BUILDING 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA INTRODUCTION ............................................................................................ 1 BACKGROUND ............................................................................................... Property Description ~ ................................................................................ 1 Project History ....................................................................................... 3 Geologic and Hydrogeologic Conditions .......................................................... 3 FIELD METHODS ............................................................................................ 4 Health and Safety Plan Preparation ............................................................... 4 Soil Boring Locations and Methods ................................................................ 4 Soil Sampling ........................................................................................ 4 Field Screening of Soil Samples ................................................................... 6 Laboratory Analyses ................................................................................ 6 RESULTS OF SITE CHARACTERIZATION ............................................................. 6 Subsurface Conditions .......................................................... ~ .................... 6 Results of Analytical Testing ...................................................................... 6 Discussion of Results ................................................................................ 7 Conclusions ........................................................................................... Recommendations ................................................................................... 8 REPORT CLOSURE .......................................................................................... 8 FIGURES Figure 1 Figure 2 Vicinity Map, Page 2 Boring Location Map, Page 5 APPENDICES Appendix A: Appendix B: Appendix C: Site Health and Safety Plan Boring Logs Laboratory Reports and Chain-of;Custody Form EARTH SYSTEMS CONSULTANTS Earth Systems Consultants South-------~r-~ Califor~i~ 1024 West Avenue M-4 Palmdale, CA 93551 (805) 948-7538 FAX (805) 948-7963 I June 10, 1994 Bakersfield College 1801 Panorama Drive Bakersfield, CA 93301 Project No.: SA-4471-L01 I I I SUBJECT: REPORT OF SITE CHARACTERIZATION BAKERSFIELD COLLEGE TRADES AND INDUSTRIES BUILDING 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA REFERENCE: Earth Systems Environmental, Inc., 1992, Report of Remedial Action, Bakersfield College, Underground Storage Tank Site, 1801 Panorama Drive, Bakersfield, California, Project No. EB-8191-2, dated October 30, 1992. I I INTRODUCTION This report presents the results of a subsurface soil evaluation at the Bakersfield College Trades and Industries building, Bakersfield, California. The purpose of our services was to evaluate the pot. ential for soil contamination associated with the former presence of a 3,000 gallon underground storage tank (UST). I i I I I This report presents the results of the assessment activities, which included the following: · Drilling and sampling two borings to assess the limits of hydrocarbon contamination of soil. * Analyzing soil samples for Total Petroleum Hydrocarbons as gasoline (TPHg) and volatile aromatic compounds. · Interpreting the analytical and field data, and preparing this report of findings. Site assessment methods used were in accordance with guidelines established by the City of Bakersfield Fire Department, Hazardous Material Division, UST regulations cited in Title 23 of the California Code of Regulations (CCR); hazardous materials regulations cited in Title 22 CCR; and health and safety regulations cited in Title 8 CCR 5192, as well as standard environmental and geotechnical engineering practices. I I I BACKGROUND The subject site is located at 1801 Panorama Drive in the City of Bakersfield, Kern County, California (Figure 1.) The former tank site is located in an alley way within the interior of the campus at the Trades and Industry Department. This tank was used to supply fuel to Bakersfield College's maintenance department vehicles. i 2 I I I I I ! I I I I I i I I I I I I I June 10, 1994 3 Project No.: SA-4471-L01 Pro_iect History_ The 3,000 gallon underground fuel storage tank, dispenser, and associated product pipeline were removed on May 1, 1992 under a permit with the City of Bakersfield Fire Department, Hazardous Materials Division. The contractor was Franzen Hill of Tulare, California. Earth Systems Environmental provided environmental services, including soil sampling and analysis. The excavated soils were remediated on site using aeration and oxygenation methods. Confirming tests on samples collected on September 23, 1992 indicated the remediation was successful. The excavation was backfilled with imported sand and repaved with asphalt. Samples collected at the base and three of the sidewalls of the excavation indicated that there was gasoline contaminated soil left in place. The maximum concentration of Total Petroleum Hydrocarbon (TPH) was 3,200 mg/kg, collected from the west wall of the excavation. The highest concentration of volatile aromatic organic compound was 430 mg/kg of total xylenes, from the north wall of the excavation (ESE, 1992). On May 3, 1994 Earth Systems Consultants, Southern California (ESC) conducted a subsurface characterization of the subject site, as detailed below. Geolo~c and Hydrogeologic Conditions The site is located in the southern part of the Great Valley geomorphic province. The Great Valley is a north-south trending valley, approximately 400 miles long and 50 miles wide. The southern portion of the province is known as the San Joaquin Valley. The surface of the San Joaquin Valley is composed primarily of unconsolidated Pleistocene (1.6 million to 11,000 years ago) and Recent (11,000 years ago to the present) alluvial sediments. These sediments overlie Mio-Pliocene to Cretaceous marine sediments that extend to crystalline basement rock at approximately 20,000 feet. The subject site is underlain by the Pleistocene alluvial sediments of the Kern River Formation. These sediments, as encountered in our exploration borings, consist of unconsolidated sandy gravel, with rounded pebbles, cobbles and boulders. Surface and groundwater in the San Joaquin Valley is derived predominantly from the Sierra Nevada mountain range to the east, and is transported by five major rivers. The southern most of these major rivers in the Kern River. The subject site is located at the top of the Panorama Bluffs at an elevation 400 feet above the south side of the Kern River. The depth to the regional unconfined aquifer is grater than 400 feet below surface at the site, with the direction of groundwater flow to the southwest (Kern County Water Agency, Improvement District No. 4, 1991 Report on Water Conditions, February, 1992). EARTH SYSTEMS CONSULTANTS i I I I I I I I I I I i i I i i ! I I June 10, 1994 4 Project No.: SA-4471-L01 ~'k~,nMETHODS Health and Safety Plan Prenaration Due to the presence of hydrocarbon-contaminated materials, and possibly hazardous materials, at the subject site, a Site Health and Safety Plan was prepared to protect ESC workers at the site. The plan was prepared in accordance with Federal Occupational Safety and Health Administration (OSHA) Rule 1910.12. The Site Health and Safety Plan establishes personal protection standards, responsibilities of supervisors and workers, and emergency response measures. ESC field personnel have been certified for hazardous materials work in accordance with OSHA requirements. A copy of the Site Health and Safety Plan is included in this report as Appendix A. Prior to drilling, Underground Service Alert was notified of the schedule for the intended investigation activities at the subject site. Soil Borinff Locations and Methods Two soil borings (B-1 and B-2) were drilled in the former underground tank site at the locations shown on Figure 2. A third boring was originally planned for the north side of the excavation. Drilling, however, was extremely difficult because of gravely nature of the material. The two borings were drilled to refusal (B-1 at 27 feet and B-2 at 19 feet). The logs of the borings are presented in Appendix B. The borings were drilled using a truck-mounted CME-55 drill rig equipped with an eight-inch diameter hollow stem auger in accordance with ASTM Method D1452-80. The augers were steam cleaned prior to drilling each boring to reduce the possibility of cross-contamination. The rinsate and soil cuttings were containerized in Department of Transportation (DOT) approved 55-gallon drums. These drums containing the soil and rinsate were left onsite, pending receipt of analytical results. Disposal alternatives of the drums are discussed on below. Borings were backfilled with two-sack cement slurry on the same day as excavation. The lithology and other pertinent data were recorded on field boring logs in accordance with ASTM Method D2488-84 for visual description and identification of soils by a qualified geologist using the Unified Soils Classification System. Soil cuttings, or spoils, from the borings were field screened with an organic vapor analyzer (OVA) to estimate if the material was contaminated. Soil samples were recovered from the borings through the auger in 2.5-inch diameter brass sleeves driven in a split-spoon sampler by a 140-pound hammer with a 30-inch drop in accordance with ASTM methods D1586-84 and D1587-83 for split-barrel sampling of soil and for thin-walled tube sampling of soils, respectively. The sampling equipment was cleansed with a non-phosphate solution, rinsed in tap water and then rinsed in distilled water between sample intervals to reduce the possibility of cross-contamination. The rinsate was containerized onsite in DOT approved 55- gallon drums. EARTH SYSTEMS CONSULTANTS I I I I I I I I I I I I I I ! I I I I Former Product Line N B-2 Approximate Boring Location Approximate Scale: 1"=20' Grass Area Figure 2 BORING LOCATION MAP BAKERSFIELD COLLEGE 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA EARTH SYSTEMS CONSULTANTS 6-10-94 [ SA-4471 -L01 I i I ! I I I I I I I I I I I i I i I I June 10, 1994 6 Project No.: SA-4471-L01 Soil samples were collected at every five feet in each boring, beginning at five to ten feet below the ground surface. Sample S-5 at a depth of five feet from boring B-2 was of the excavation backfill, and not used for analysis. The blow counts, recovery and lithology were recorded on the field logs. The samples were collected using brass sleeves installed inside the split-spoon sampler. Upon collection, a sample sleeve was immediately sealed with Teflon, capped, labeled in accordance with Environmental Protection Agency (EPA) protocols, recorded on a Chain-of-Custody form, chilled and stored in an iced cooler for transport to a State-certified analytical laboratory following chain-of-custody procedures. Another sample sleeve from each sample depth was used for lithologic description, and a third sleeve was used for field screening purposes. Field Screenin~ of Soil Samples The material from the top sleeve from each sample depth' was placed in a plastic container, shaken, and stored for approximately 15 minutes. A standard headspace reading was collected at this time using a calibrated portable OVA. Please note that this instrument provides a qualitative test and should not be construed to represent a certified laboratory analysis. The instrument readings were noted on the boring logs. Laboratory_ Analyses A total of six samples were submitted to Centrum Analytical Laboratories, Inc., a State-certified laboratory for analysis in accordance with State guidelines and EPA protocols. The soil samples were analyzed for TPHg by EPA Method 8015-modified and for volatile aromatic compounds (BTEX) by EPA Method 8020. A properly completed Chain-of-Custody form was submitted to the laboratory for the specified analyses along with the samples. Results of the analyses, plus Chain- of-Custody documents, are presented in Appendix C. RESULTS OF SITE CHARACTERW~,TION Subsurface Conditions Soils encountered during the subsurface study were predominantly sandy gravels. The upper approximately ten to twelve feet was clean sand that was used to backfill the former tank excavation. No hydrocarbon odor was noticed. Readings from the OVA were also in the low range (see Appendix B). Groundwater was not encountered, and free water did not accumulate in any of the borings. Results of Analytical Testing, The analytical results are summarized below on Table 1. TPHg was not detected in any of the samples. The concentrations of volatile organic compounds were 22 lig/kg (parts per billion) to not detected. Benzene and Ethylbenzene were not detected. Toluene was detected in. four samples (S-1, S-2, S-4 and S-6). Total xylenes were detected in three samples (S-1, S-4 and S-6). EARTH SYSTEMS CONSULTANTS I I i I I i I I I ! I I I I i I i I I June 10, 1994 Project No.: SA-4471-L01 Table 1 Samnle Borinr_/Denth Tol~ne Ethvlbenzene Xvlenes T P H C S-1 B-l, 10' ND S-2 B-l, 15' ND S-3 B-l, 21' ND S-4 B-l, 25' ND S-6 B-2, 10' ND S-7 B-2, 15' ND m ND ~ ND H ND ND ND ND ND ND ND ~ ND m ND ~ ND ~ ND ND ND ND ND BTEX concentrations in ~g/kg (EPA 8020) TPHg concentrations in mg/kg (EPA 8015M) DETECTION LIMITS: BENZENE, 3 ~g/kg TOLUENE, 10 ~g/kg ETHYLBENZENE, 5pg/kg TOTAL XYLENES, 15pg/kg TPHg, 0.3 rog/kg Discussion of Results The laboratory analysis did not detect THPg in the tested samples. The tested amounts of volatile aromatic organic compounds are low and are near detection limits (see Table 1). These values are significantly lower than those detected from samples taken from the excavation walls on May 2, 1992 (ESE, 1992). TPHg from those samples ranged form 1,700 from the south sidewall to 3,200 rog/kg from the west sidewall. Benzene ranged from not detected to 0.8 rog/kg from the north sidewall. Toluene ranged from 15 rog/kg from the base to 79 rog/kg from the north wall. Ethylbenzene ranged from 15 rog/kg at the base to 45 rog/kg from the north sidewall. Total xylenes ranged from 280 rog/kg from the base to 430 rog/kg from the north sidewall. The recent, Iow-level results indicate that contamination was limited in depth and lateral extent. It may also suggest that subsurface microbial activity may be actively degrading petroleum hydrocarbons and organic matter at the subject site. EARTH SYSTEMS CONSULTANTS June 10, 1994 8 Project No.: SA-4471-L01 Two soil borings were drilled at the subject site on May 3, 1994 to evaluate the lateral and vertical extent of soil impaction by hydrocarbon products. The gravelly soil conditions at the site made drilling extremely difficult. The borings encountered sandy gravel native material, overlain with sand that was used to backfill the underground storage tank excavation. Hydrocarbon odor was not detected during drilling and OVA readings were low. No free hydrocarbon product nor free water were observed in any of the borings. The estimated depth to groundwater at the subject site is approximately 400 feet. Six soil samples were submitted to Centrum Analytical Laboratories, Inc. for chemical analyses. Total petroleum hydrocarbon as gasoline (THPg) was not detected and low levels of volatile aromatic organic compounds were detected by laboratory analysis. Relatively higher values were obtained from the analysis of samples collected during the tank excavation on May 2, 1992. Based on these data, it appears that the contamination left in place during the tank removal is limited in lateral extent to the area immediately beneath the former UST. Vertical migration of the TPHg was not detected. Vertical migration of volatile aromatic organic fractions appear to extend to a depth of at least 25 feet, however, concentrations are below State Action Limits, with a maximum of 22 pg/kg total xylenes observed (B-1 and B-2 at a depth of 10 feet). One may infer from the data that existing soil bacteria may be degrading the adsorbed residual contamination existent beneath the former UST. Based on the results of the laboratory analysis and the difficulty with the site conditions, it is our opinion that all that was practical was performed to evaluate this site within normal environmental evaluation methods. Recommendation~ Based on the site characterization conducted by ESC, the soil contamination appears to be limited in lateral extent. Total vertical migration has not been defined. However, concentrations detected from boring samples are below State Action Limits. ESC recommends that the residual contamination be allowed to remain in place where existing microbial action should continue to degrade the hydrocarbons. Based on the analytical results, drums containing soil cuttings and rinsate from the borings do not require specialized handling or off-site disposal. REPORT CLOSURE This report has been prepared for the exclusive use of Bakersfield College, or its agents, as it pertains to the property at 1801 Panorama Drive, Bakersfield, California. The findings and conclusions rendered in this report are opinions based on laboratory testing of soil samples collected, and field observations obtained during the subsurface evaluation described herein. This report does not reflect subsurface variations which may exist between sampling points. EARTH SYSTEMS CONSULTANTS June 10, 1994 9 Project No.: SA-4471-L01 These variations could cannot be anticipated nor they be entirely accounted for in spite of exhaustive additional testing. This report should not be regardedas a guarantee that no further contamination, beyond that which may have been detected by specific laboratory analysis conducted within the scope of this is on the said property. Undoeumentod, unauthorized releases of hazardous evaluation, present materials, the remains of which are not readily identifiable by visual inspection and are of different chemical constituents, are difficult and often impossible to detect within the scope of a chemical specific investigation. ESC has strived to perform these services in accordance with generally accepted practices in the community. No warranty, either express or implied, is made. Thank you for this opportunity to have been of service. If you have any questions regarding this report or the information contained herein, please contact this office at your convenience. Sincerely, EARTH SYSTEMS CONSULTANTS MIchell~ McM~ll~l~'/ ' Daniel C. Schneidereit, EG 162 EnVironmental Assessor Project Ge~logi~.~ \ \ ENG~!EE,qiNG /. ] EARTH SYSTEMS CONSULTANTS I I I I I I I I I I I I I I I I I I I APPENDIX A Health and Safety Plan EARTH SYSTEMS CONSULTANTS I I Q Eart____h_h S__ystem_____~s Consultants Southern California I I I I I I I I I I I ! I I I I SITE HEALTH AND SAFETY PLAN FOR BAKERSFILED COLLEGE 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA Prepared by Earth Systems Consultants Southern California 1024 Avenue M-4 Palmdale, California 93551 (805) 948-7538 in accordance with Federal OSHA Requirements 29-CFR 1910.120 Project Number SL-4471-L01 1024 West Avenue M-4 Palmdale, CA 93551 (8O5) 948-7538 FAX (805) g48-7963 I I I I I I I I I I I I I I I I I I I April 29, 1994 2 SL-4471-L01 Health and Safety Plan SITE HEALTH AND SAFETY PLAN SITE DESCRIPTION The project site is located at 1801 Panorama Drive, in the City of Bakersfield, California. Figure I presents the location of the site. An operating, automotive maintenance yard is located on the site. SITE HISTORY The site formerly contained a 3,000 gallon underground gasoline storage tank, fuel dispenser and associated product piping that-were removed on May 1, 1992. Samples collectedd at the base and side walls of the UST excavation contained a maximum concentration of 3,200 ppm total petroleum hydrocarbon (TPH) as gasoli.ne.The purpose of this site assessment is to evaluate the approximate lateral and vertical extent of the contamination. The purpose of this plan, which was developed specifically for operations at the referenced site, is to assign responsibilities, establish personnel protection standards and mandatory safety procedures, and provide for contingencies that may arise while drilling, soil sampling, monitoring well installation, well development and groundwater sampling are being conducted at the site. This plan complies with, but does not replace, Federal Health and Safety Regulations as set forth in 29 CFR 1910 and 1926, California Health and Safety Regulatiens set forth in Title 8, California Code of Regulations, and guidance established by the California Department of Health Services. This plan is to be used by Earth Systems Consultants Southern California (ESC) as a supplement to such rules, regulations, and guidance. The provisions of the plan are mandatory for all on-site ESC employees engaged in activities known to be or potentially associated with the presence of hazardous materials. These activities may include, but are not limited to, mobilization, project operations, and demobilization. Changes and/or unanticipated site conditions may require modification of this Site Health and Safety Plan (SHSP) in order to maintain a safe work environment. Any proposed changes to this plan should be reviewed by the Corporate Health and Safety Officer of ESC, prior to their implementation. If this is not feasible, the project team leader may modify the plan :and record all changes in the field log book. Under no circumstances will the plan modifications conflict with Federal, state, or local health and safety regulations. Under 29 CFR 1910.120 (b) (15) ESC is required to notify each subcontractor of the hazardous materials identified by ESC. In the event ESC expressly assumes health and safety responsibilities for toxic or other concerns specified, the acceptance of such responsibility does not and shall not be deemed an acceptance of responsibility for any other health and safety requirements, such as those related to excavating, trenching, drilling or backfilling. Each EARTH SYSTEMS CONSULTANTS I I I I I I I I I I I I I I I I I I I April 29, 1994 3 SL-4471-L01 Health and Safety Plan subcontractor, shall perform all work in accordance with a Site Health and Safety Plan for its employees, which covers any exposure to hazardous materials which may be present on site. The subcontractor, shall hold ESC harmless from, and indemnify it against, all liability in the case of any injury or injury of its own employees. ESC reserves the right to review and approve the subcontractor's/owner's Site Health and Safety Plan at any time. ESC reserves the right to suspend the subcontractor°s site work and ask the subcontractor's personnel to evacuate the hazard area in the event of grossly inadequate health and safety precautions on the part of the subcontractor or the belief that the subcontractor's personnel are or may be exposed to an immediate health hazard. KEY PERSONNEL AND RESPONSIBILITIES The key personnel and their responsibilities for this project are as follows: Cor.Dorate Health and Safety Officer The Corporate Health and Safety Officer (CHSO) for this project is Mr. Robert Mohle. It is his responsibility for developing and coordinating the ESC health and safety programs. For this project, he is responsible for reviewing and approving this SHSP for accuracy and incorporating new information or guidelines which aid the Project Manager and Site Health and Safely Officer in further definition and control of potential health and safety hazards associated with the project. Pro!ect Manaqer The Project Manager (PM) for this project is Ms. Michelle McMillen. It is her responsibility to report to upper-level management. The duties of the PM are as follows: · Prepare and organize the SHSP which describes all planned field activities that may be encountered at the site. · Obtains permission for site access and coordinate field activities. · Brief field team on specific assignments and potential hazards, and ensures that all health and safety requirements are met. · Provides a copy of this SHSP to each member of the project field team. Site Health and Safety offic{~r The Site Health and Safety Officer (SHSO) for this investigation is Mr. Dan Schneidereit. He advises the PM on all aspects of health and safety on-site and recommends stopping work if any operation threatens worker or public safety. Other duties include:- · Implement the SHSP. · Select personal protective clothing and equipment specific for the project and ensures that they are properly stored and maintained. · Assure that all personnel assigned to site have appropriate health and safety training and have a current baseline medical examination. · Assign key safety duties and responsibilities to team members. EARTH SYSTEMS CONSULTANTS I I I I I I I I I I I I I I I I ! I I April 29, 1994 4 SL-4471-L01 Health and Safety Plan · Monitor the work parties for signs of stress, and also monitors on-site hazards and conditions. · Know emergency procedures, evacuation routes, arranges on-site first aid facilities and off-site emergency care. · Conduct daily safety meetings and periodic inspections to determine if SHSP is being followed. · Establish and maintain site record keeping, including reporting accidents, as required. · Participate in preparation of SHSP and revise it as necessary. · Verify that drilling or excavation locations have been cleared for underground utilities and other subsudace structures before subsurface exploration is initiated. The responsibilities for the team members are as follows: · Take all reasonable precautions to prevent injury to themselves and to their fellow employees; and · Performing only those tasks that they believe they can do safely, and immediately reporting any accidents and/or unsafe conditions to the client and the CHSO. · Implementing the procedures set forth in the SHSP, and reporting any deviations from the procedures described in the Plan to the SHSO and to the CHSO. SITE INFORMATION All field activities will take place at 670 West Avenue L-8. All boring and sampling activities will take place in the daylight hours between 8:00 A.M. and 5:00 P.M. The nearest telephone is located inside of the adjacent office building. Water is located in the bus washing area, approximately 50 feet south of the dispenser island. The presence and location of hazardous materials, which are petroleum hydrocarbon compounds, has been confirmed through previous investigations. If needed, three blasts of a horn will be sounded for site evacuation. This site information is current and has been verified through visual inspection. HAZARD ASSESSMENT Hazardous Materials Hazardous materials may be a health hazard to site personnel via ingestion, skin absorption, or inhalation. Biohazards or accidental ingestion of contaminants may occur via hand-to-mouth actions. Dust inhalation may also contribute to ingestion of chemical contaminants. During excavating or soil or sample collection, and sample preparation, inhalation of contaminant vapors could occur. Skin absorption may occur via contact with contaminated soil. The degree of hazard depends upon the adverse characteristics and toxicity of the chemical contamination, EARTH SYSTEMS CONSULTANTS I I I I I I I I I I I I I I I I I I I April 29, 1994 5 SL-4471-L01 Health and Safety Plan the amount of potential contact, and the exposure time. The greatest potential for chemical hazard to site personnel is during drilling activities. The following substance is potentially a chemical hazard at the subject site: Substances Involved .EJ33.sJ.c,.~d=.~ ~ Hydrocarbon Fuels Liquid/Absorbed I r ri t a n t The following materials potentially present at this project site are specified by California Health and Safety Code 25249.5 as recognized and confirmed by the State of California as carcinogenic and/or mutagenic: 1. Gasoline containing benzene. Potential Worker Hazar~ With hydrocarbon-based liquids, contact may result in dermal irritation due to desiccation. Respiration of air laden with hydrocarbon vapors may result in oxygen deficiency and/or mucous membrane irritation. Mixtures of air and hydrocarbon fuels exhibit an explosive range thus presenting an explosion hazard. Crude Oil contains benzene, a proven human carcinogen. Potential exposure values and limits for benzene are listed in the table below. TABLE I - POTENTIAL EXPOSURE VALUES [ Chemical Highest Conc. IP1 TLV2 IDLH3 Level Flammable Range Detectedin Samples (electron (ppm) (percent) (ppm) volts) Benzene 0.800 0.9245 1 0 Carcinogen 1.3 - 7.1 1 Ionization Potential in electron volt= (eV) 2Threshold Limit Value as the time-weighted average (TWA) published by the American Conference of Governmental Industrial Hygienists (ACGIH) 3Immediately dangerous to life and health (IDLH) level as published by National Institute of Occupational Safety and Health (NIOSH), Publication Number 85-114, September 1985. Benzene is a colorless liquid with an aromatic odor. It is incompatible with strong oxidizers like chlorine or bromine with iron. The routes of exposure for benzene include inhalation, skin absorption, ingestion, and skin and/or eye contact. Symptoms of exposure to benzene include EARTH SYSTEMS CONSULTANTS I I ! I I I I I I I I I I I I I I I I April 29, 1994 6 SL-4471-L01 Health and Safety Plan irritation to the eyes, nose, and respiratory system, giddiness, headache, nausea, staggering gait, fatigue, anorexia, lassitude, dermatitis, and abdominal pain. The potential health hazard from benzene exposure is Iow at this site. Conditions for Suspension of ODeration.~ Site monitoring equipment will include a photoionization detector (PID) during drilling. Field activities will be suspended when the PID level in the breathing zone increases to five times background levels. Level of Protection The level of Personal Protection Equipment (PPE) needed for this evaluation is Level D. Level D PPE includes coveralls, leather boots with steel toes and shanks, safety helmet and gloves. If warranted, this Site Safety Plan can be modified for use of Level C situations. Modification to Level B or Level A is beyond the scope for this Site Safety Plan and is not permitted. The criteria for upgrading to Level C PPE is the detection of unknown gasses or vapors in concentrations greater than five times background readings in the breathing zone. Level C PPE includes Tyvek suits, nitrile gloves and rubber boots, eye protection, hard hat, and a full-face or half-face air-purifying respirator with Scott 642-OA-H cartridge-filters or equivalent. Physical Hazards Excavating equipment will be working near petroleum contaminated soils. All workers will be positioned upwind from operating equipment when practical. SliDs. Tri.os and Fall.~ All field personnel shall become familiar with the general terrain and potential physical hazards (ravines, potholes, and loose gravel) which would be associated with accidental risk to slips, trips and/or falls. S.olashes and s. ill All field personnel shall wear .appropriate chemical resistant gloves and goggles to prevent potential dermal exposure to accident splashes and spills that may occur during groundwater sampling and purging. Working outdoors on sunny days for extended periods of time can cause sunburn to the skin. Excessive exposure to sunlight is associated with the development of skin cancer. Field staff should take precautions to prevent sunburn by using sun-screen lotion and/or wearing hats and long-sleeved garments. EARTH SYSTEMS CONSULTANTS I I ! I I I I I I I I I I I ! I I I I April 29, 1994 7 SL-4471-L01 Health and Safety Plan Heat stress can be a major hazard, especially for workers donning personnel protective equipment (PPE). The same protective materials that shield the body from chemical exposure also limit the dissipation of body heat and moisture. Heat stress can occur very quickly, depending on the work being performed, the ambient weather conditions, clothing, and the individual characteristics of the worker. Because heat stress is probably one of the most common (and potentially serious) illness at hazardous waste sites, regular monitoring and other preventive precautions are vital. Heat stress monitoring should commence when personnel are wearing PPE, including Tyvek- type coveralls, and the ambient temperature exceeds 70°F. If impermeable garments are not worn, monitoring should start when the temperature reaches 85°F. The following monitoring program is for workers wearing semipermeable or impermeable encapsulating ensembles when the temperature in the work area is above 70°F: Heart Rate should be measured by the radial pulse during a 30 second period as early as possible in the rest period. The next work cycle should be shortened by one-third while the rest period is kept the same, if the heart rate exceeds 110 beats per minute. If the heart rate still exceeds 110 beats per minute at the beginning of the next rest period, shorten the following work cycle by one-third. Preventing heat stress is particularly important because once someone suffers from heat stroke or heat exhaustion,, that person may be predisposed to additional heat injuries. To avoid heat stress, the following steps may be taken: · Modify work/rest schedules according to monitoring requirements, and mandate slowdowns as needed. · Alternate personnel assigned to particular taSks to minimize over stress at function. one job · Add additional persons to work team, and work during cooler hours, if possible. · Provide shelter or shaded areas to protect personnel during rest periods. Maintain workers body fluids to ensure that the cardiovascular system functions adequately by having workers drink 16 ounces of fluid (preferably water) before beginning work, and urge workers to drink at least 16 ounces of fluid during each rest period. · Encourage workers to maintain an optimal level of physical fitness. An initial work/rest cycle on one hour work and fifteen minutes rest is recommended for protection of staff when the heat stress hazard is high. The recommended cycle will be adjusted up or down based upon worker monitoring, environmental conditions, and the judgement of the site safety officer. At any time field team members recognize the signs or symptoms of heat EARTH SYSTEMS CONSULTANTS i I I I I I I I I I I I I I I I I I I April 29, 1994 8 SL-4471-L01 Health and Safety Plan stress prior to a scheduled rest period, they will notify the site safety officer immediately in order that a rest period can be called. Some of the signs and symptoms of heat stress are heat rash, heat cramps, heat exhaustion, and heat stroke. Heat rash is characterized by a decreasing ability to tolerate heat and skin irritation and may result from exposure to heat or humid air. Skin cleanliness and treatment with mild drying lotions are necessary to prevent infection. Heat cramps are caused by heavy sweating with inadequate electrolyte replacement and are characterized by muscle spasms and pain in the hands, feet, and abdomen. Treatment of this disability consists of administering salted liquids orally. Heat exhaustion may result form physical exertion in a hot environment when cardiac output is inadequate to meet increased flow of blood that results from dilation of peripheral blood vessels or dehydration. It is distinguished by pale, cool, moist skin, heavy sweating, dizziness, nausea, and fainting. First aid for heat exhaustion is as follows: 1. Immediately remove victim to support area, or if You are the victim, proceed to the support area. 2. Decontaminate, if practical, before entering support area. 3. Start cooling, but be careful not to cause a chill. 4. If conscious and not in shock, give water to drink slowly. 5. If vomiting, and/or signs and symptoms are not lessening within an hour, call for emergency help and/or transport victim to emergency room. 6. If person is a victim of heat exhaustion, they should not work the remainder of the day. The most serious form of heat stress is heat stroke. This is caused when the temperature regulation fails and the body temperature rises to critical levels. Immediate action must be taken to cool the body before serious injury and death occur. Red, hot, usually dry skin, lack of reduced perspiration, nausea, dizziness and confusion, strong, rapid pulse, and coma are the signs and symptoms of heat stroke. First aid for heat stroke is as follows: 1. Immediately move victim to cool, uncontaminated area, the support area, and remove and dispose of victim's chemical-resistant clothing, if wearing any. 2. Cool the victim rapidly using whatever means necessary. This can include, but may not be limited to, removing clothing, fanning, and placing in water. 3. Do not give drinking water to victim. 4. Treat for shock, if needed. 5. Transport the victim to a medical facility immediately for further cooling and monitoring of body functions. EARTH SYSTEMS CONSULTANTS I I ! I I I I I I I I I I I I I I I I April 29, 1994 9 SL-4471-L01 Health and Safety Plan Cold stress is a particular concern when field activities are performed while the air temperatures at the site are below 40°F. If winds are blowing at 5 mph or grater and/or the weather is damp or wet, cold stress is even more of a potential hazard. Donning of appropriate clothing, having warm shelter readily available, carefully scheduling work and rest periods, and monitoring workers' physical conditions are precautions that will be taken to prevent cold stress. Cold injury (frostbite and hypothermia) may occur if cold stress is not prevented. As a preventive measure, the body core temperature must not drop below 96.8°F. Pain in the extremities is the first early sign of cold stress. Severe shivering sets in when the body core temperature drops below 95°F. If this occurs, work will stop immediately and the affected worker(s) will take a warming break of sufficient duration that the signs and symptoms of cold stress go away. Noise Heavy equipment, such as drill rigs, may produce loud noise. The effects of noise can include, but may not be limited to: · Distracted, annoyed, or startled workers. · Physical damage to the ear, pain, and temporary and/or permanent hearing loss. · Communication interference that may increase potential hazards due to the inability to warn of dangers and the proper safety precautions to be taken. OSHA regulation 29 CFR Part 1910.95 describes an effective hearing conservation program that must be administered whenever noise exposures equal or exceed an 8-hour, time-weighted average sound level of 85 dBA (decibels on the A-weighted scale). In addition, if workers are subjected to noise exceeding an 8-hour, time-weighted average sound level of 90 dBA, feasible administrative or engineering controls must be utilized. Heavv Eauioment Before beginning any site work, the drill rig operator will perform a safety inspection of the drilling rig. Personnel shall not work with equipment that they judge to be unsafe because of deterioration, missing parts, obvious defects, or improper use for site conditions. All equipment shall be bonded and grounded, sparkproof, and explosion-resistant, as appropriate. Operation of heavy equipment in areas with steep embankments or unstable~ ground will be avoided, if possible. The' drill rig operator will make appropriate provisions to ensure safe operation of equipment, if it is necessary to operate equipment in these areas. ANSI-approved hardhats must be worn at and near the heavy equipment. Since heavy pieces of equipment will be used during operations, steel-toed boots/shoes are required during drilling operations, as well as during operation of other heavy equipment. The drill rig operator must maintain a safe clearance (at least 11 feet) between overhead utility lines and the equipment at all times. EARTH SYSTEMS CONSULTANTS I I I I I i I I ! I I I I I I i I I I April 29, 1994 1 0 SL-4471-L01 Health and Safety Plan Underground Utilitie~ ESC will contact Underground Service Alert (USA) and USA and/or the client will locate all underground utility locations prior to the starting of field activities. Resources used include site plans, utility companies, and Underground Services Alert (USA). In California, USA must be contacted at least two, but not more than fourteen, days prior to excavating or drilling on public property. MEDICAL MONITORING All ESC employees assigned to the sampling operations must be active participants in ESC Employee Medical Surveillance Program, which meets the requirements of 29 CFR 1910.120. ESC's program requires employees assigned to hazardous waste site investigations and remediation to take pre-assignment, annual, and exit medical examinations. The CHSO will maintain current copies of training certificates and statements of medical program participation for all site personnel. Work-Rest Schedule Depending on the prevailing temperature and humidity, a work-rest schedule may be necessary. Duration and frequency will be at the discretion of the site supervisor. A supply of potable water will be kept available near the site. Field personnel must receive 40-hour basic health and safety training, designed to comply with the OSHA/EPA requirements for hazardous waste operations and eight hours of annual refresher as set forth in 29 CFR 1910.120, and attend a site-specific safety orientation conducted by the project supervisor. The briefing shall include the following: 1. A briefing on the work to be performed and the work schedule 2. A discussion of the potential chemical and physical hazards associated with the work to be performed 3. Hazard identification 4. Purpose and limitations of personal protective equipment 5. Decontamination and emergency response procedures 6. Proper on-site conduct. EMERGENCY CONTACT AND PROCEDURER Should any situation or unplanned occurrence require outside or support services, the appropriate contact from the following should be made: ~g.e.D.g.Y. Person to Contact ~ Ambulance dispatcher 91 I EARTH SYSTEMS CONSULTANTS I I I I I I I I I I I I I I I I I I I April 29, 1994 11 SL-4471-L01 Health and Safety Plan County Fire Department Police Bakersfield Community Hospital Bakersfield College dispatcher dispatcher dispatcher Chuck Palmgren 911 911 (805)327-1792 (805)395-4221 To reach the Bakersfield Community Hospital, turn left out of Bakersfield College onto Panorama Drive (Figure 1). Turn right on Manor Street then left on Roberts Lane. Continue on Roberts Lane to Airport Drive and turn right. The hospital is on the southwest corner of Airport Drive and Decatur Street Turn left into the hospital's parking lot. Paramedics should be summoned in the event of a serious injury; they will arrange to transport the victim to the nearest appropriate facility. A first aid kit will be available at the site for use in case of minor injuries. If anyone receives a splash or particle in the eye, the portable eyewash will be used to irrigate the eye for 15 minutes. If direct contact with contaminants occurs, affected skin areas should be washed immediately with soap and water. The level of hazard associated with the work to be performed does not require dividing the site into formal exclusion, contamination reduction, and support zones. However, care will be taken to avoid breathing vaporized fuel. CONTAMINATION MONITORINR Organic vapor monitoring of the ambient air shall be conducted at reasonable intervals as determined by project personnel. The purpose of monitoring is to determine if vapor levels in the work area are high enough to warrant personal protection measures or evacuation of the site. Organic vapor levels should be monitored using an OVM photoionization meter with an 11.7 eV lamp (probe), calibrated to benzene. Background should be determined by taking readings before sampling begins. All readings, background and others, must be recorded. If any continuous measurement is observed to be ten times over background levels in the work area, respiratory protective action will be required. Lesser protective measures are at the field geologists or engineers discretion. DECONTAMINATION Before leaving the site/work area, personnel must remove all protective equipment and wash their hands, faces and necks. These washing procedures shall be observed before all work breaks. To minimize the potential for cross-contamination, all drilling equipment shall be decontaminated before the start of sampling, between sampling, and before removal from the site. Sampling equipment shall be decontaminated before sampling and between sampling with EARTH SYSTEMS CONSULTANTS I I I I I I I i I I I I I I I I I I I April 29, 1994 1 2 SL-4471-L01 Health and Safety Plan washing with laboratory-grade detergent, a water rinse and a contaminant-free distilled water rinse. All contaminated equipment will be placed in DOT approved 55 gallon steel drums and disposed in accordance with applicable local, state, and federal hazardous waste laws and regulations. EMERGENCY PROCEDURES Emergency conditions are considered to exist if: * Any member of the field crew is involved in an accident, experiences any adverse effects or symptoms of exposure while on-site; or * A condition is discovered that suggests the existence of a situation more hazardous than anticipated. In the event of an on-site emergency, the procedures described below are to be immediately followed. Personnel on-site should use the "buddy system" (stay in pairs). In the event of a communication breakdown, i.e. radio malfunction or if radios are not available, "buddies" should use prearranged hand signals or other means of emergency signals as follows: * Hand gripping throat - out of air, can't breath. * Grip partner's wrist or place both hands around waist - leave area immediately, no debatel * Hands on top of head - need assistance * Thumbs down - no, negative. The field engineer or geologist will establish emergency evacuation routes and will make all project personnel aware of these routes prior to the first on-site activities. In the event of an emergency, selection other escape route will be based on the nature of the emergency and wind direction. Visual contact should be maintained between "buddies" on-site, with the team remaining in close proximity in order to assist each other in case of emergencies. In the event that any member of the field crew experiences any adverse effects of symptoms of exposure while on site, the entire field crew should immediately halt work and follow the instructions provided the project supervisor. Wind indicators visible to all on-site personnel should be provided by the project supervisor to indicate possible routes for upwind escape· EARTH SYSTEMS CONSULTANTS I I I I I i I I I I I I I I i I I I I April 29, 1994 1 3 SL-4471-L01 Health and Safety Plan The discovery of any condition that would suggest the existence of a situation more hazardous than anticipated should result in the evacuation of the field team and re-evaluation of the hazard and the level of protection required. 7. In the event an should accident occur, it will be necessary to complete an Accident Report Form with the company Safety Officer. STANDARD SAFE-WORK PRACTICER Eating, drinking, chewing tobacco and smoking are prohibited in the contaminated or potentially contaminated area of where the possibility for the transfer of contamination exists. Avoid contact with potentially contaminated substances. 'Do not walk through puddles, pools, mud, etc. Avoid, whenever possible, kneeling on the ground, leaning or sitting on equipment or ground. Do not place monitoring equipment on potentially contaminated surfaces (i.e., ground, etc.). All field crew members should be alert to the presence of strong, irritating or nauseating odors that could indicate a potentially dangerous situation. Other senses should be kept alert to possible hazards as well. 4. Precaution should be taken to prevent spillage. In the event a spillage should occur, the liquid should be contained. 5. Prevent splashing of the contaminated liquids. 6. Field crew members shall be familiar with the physical characteristics of investigations, including the following: * Wind direction in relation to ground-zero area. * Accessibility to associates, equipment, and vehicles. * Communications. * Hot Zone (areas of known or suspected contamination). * Site access. * Nearest water sources. 7. The number of personnel and equipment in the contaminated area should be minimized but only to the extent consistent with work-force requirements of safe site operations. 8. All wastes generated during Earth Systems Environmental, Inc. and/or subcontractor activities at the site remain the property of the client. EARTH SYSTEMS CONSULTANTS i I I I I I I I I i I I I I I I I I I April 29, 1994 1 4 SL-4471-L01 Health and Safety Plan PLAN ACCEPTANCE FORM The Plan Acceptance Form (attached) should be filled out by all employees working on the site and retained in the job file. Corporate Health & Safety Officer Robert Mohle (805) 541-5983 Site Safety Officer Dan Schneidereit (805) 948-7538 Project Site Safety Plan prepared by Michelle McMillen in conjunction with the Corporate Health & Safety_ Officer. Sig nat u re.'~,(',~/,~ Date; EARTH SYSTEMS CONSULTANTS I I I I I I I i I I I I I I I I I I t i ILl I I I I I I I I April 29, 1994 1 5 SL-4471-L01 Health and Safety Plan The undersigned have read and understood the attached safety plan and agree to comply with the provisions of this plan. Name Date Positi~/n ~ Name Date Name Date Position Name Date I ! ! Position Position Name Date Date I I Position Position Name Date Name Date Position Position Name Date Name Date I I I I Position Position I I i I I I I I I I I I I I ! I I I I APPENDIX B Boring Logs EARTH SYSTEMS CONSULTANTS I I I I I I I I i I I ! I I I I I I OEARTH SYSTEMS CONSULTANTS BORING LOG Project: Bakersfield College Project No.: SA-4471-L01 Drill Pig Tyl~: CME 55 - Hollow Stem Diameter of Hole: 8 inches Date(s) Drilled: 5-3-94 Location: see Site Plan Logged By: DCS Drilled By: Earth Systems Consultants · Bori~ No.: 15-1 Sheet 1 of ................................... 3" (-+) Asphalt SP Yellowish brown sand, moist, loose, poorly graded, bacicfill from ~k removal excavation. (at) S-1 22 2 ND B - ND Light brownish gray sandy gravel, moist, very dense, T - 15 coarse-grained silty sand matrix, rounded pebbles, GW E - ND X- 22 cobbles and boulder. Kern River Formation s - ND (Ooa) S-2 100 2 ND T- 11 E-ND X-ND ' B-ND S-3 100 2 ND T- ND E-ND X-ND B.ND S-4 100 3 ND T-12 E- ND Total depth 27' (Refusal) X- 18 No groundwater encountered The stratification lines represent approximate boundaries between soil types. The actual transition may be gradual. I I I I I I I I I I I I I I I I ! I EARTH SYSTEMS CONSULTANTS BORING LOG Project: Bakersfield CoQege Project No.: SA-4471-L01 Drill Rig Type: CME 55 - Hollow Stem Diameter ofHole: 8 inches Date(s) Drilled: 5-3-94 Lo~afion: see Site Plan Logged By: DCS Drilled By: Earth Systems Consultants Boring No.: B-2 Sheet 1 of 1 ~, ~ © IAthology/Remarks 0 ..................................... 3" (+-) Asphalt SP Yellowish brown sand, moist, loose, poorly graded, backfill from tank removal excavation. (at) 5. S-$ 23 ND Sample not analyzed. ~0 S-6 20 6 ND B - ND Light bwwnish gray sandy gravel, moist, very dense, T- 13 GP £ - ND coarse-grained silty sand matrix, rounded pebbles, X - 22 cobbles and boulders. 15, B - ND Kern River Formation $-7 100 ND ND T - ND E-ND X-ND (Ooa) 20, Total depth 19' (Refusal) No groundwater encountered The stratification lines represent approximate boundaries between soil types. The actual 25. transition may be gradual. 30 I I I I I I I I I I I I I I I I I I I ! APPENDIX C Laboratory Analyses EARTH SYSTEMS CONSULTANTS ;,,,c. CERTIFIED HAZARDOUS WASTE TESTING LABORATORY · CHEMICAL AND BIOLOGICAL ANALYSES Client: Earth Systems Date Reported:05/06/94 1024 W. Ave M-4 Job Number :6534 Palmdale, CA QC Batch # :8020S0464 I I I Project: Bakersfield College Date Sampled: 05/03/94 Date Received: 05/04/94 Date Analyzed: 05/05/94 Samples Rcv'd: 7 Soil Analyst: ALC~;~ LAB(JHATORY P,E~SULT~5 Method: EPA 8020 (B-T-E-X) Matrix: Soil ~ Concentration: ug/kg (parts per billion) Sample No. Method Blank S-1 S-2 S-3 S-4 S-6 S-7 Benzene Toluene ND ND ND 15 ND 11 ND ND ND 12 ND 13 ND ND Ethylbenzene ND ND ND ND ND ND ND Total Xylenes ND 22 ND ND 18 22 ND Detection Limit: : 3 10 ND - Not Detected Respectively Submitted, General Manager 290 TENNESSEE STREET · REDLANDS, CA 92373 (909) 798-9336 FAX (909) 793-1559 I I CERTIFIED HAZARDOUS WASTE TESTING LABORATORY * CHEMICAL AND BIOLOGICAL ANALYSES I I I I Client: Earth Systems 1024 W. Ave M-4 Palmdale, CA Project: Bakersfield College Date Sampled: 05/03/94 Date Received: 05/04/94 Date Analyzed: 05~05~94 Samples Rcv'd: 7 Soil Analyst: ALC ~ Date Reported:05/06/94 Job Number :6534 QC Batch # :015GS0249 LABORATORY RESULTS I I I I I I' I- I I I I METHOD: Modified 8015 (Total Volatile Petroleum Hydrocarbons) MATRIX: Soil CONCENTRATION: mg/kg (parts per million) Sample No. Method Blank S-1 S-2 S-3 S-4 S-6 S-7 Detection Limit Gasoline ND ND ND ND ND ND ND 0.3 0.3 0.3 0.3 0.3 0.3 0.3 ND - Not Detected Respecffull~' 'S'ubmitted, ~. CENTRUM ANALYIICAL LABORATORIES General Manager ' ,~. ,~: 290 TENNESSEE STREET · · REDLANDS, CA 9R373 · FAX(909) 793-1559 (909) '/9~-9~6 I ' CERTIFIED HAZARDOUS WASTE TESTING LABORA TORY · CHEMICAL AND BIOLOGICAL ANALYSES Centrum Analytical Laboratories I Matdx Spike and Matdx Spike Duplicate Percent Recovery and RPD Summary Method: 8020 / 602 (BTEX) I Date Received 05/04/94 Units ug/kg (ppb) Date Analyzed 05/05/94 Matrix Soil Job Number 6534 Sample Amount 1 g I Sample ID 6535-1 QC Batch 8020S0464 ! I I Spiked Sample MS % MSD MSD % Compound Conc Conc MS Conc Recovery Conc Recovery RPD Benzene 50 ND 55 110 58 116 5 Toluene 50 ND 49 99 54 107 8 Ethyl-benzene 50 ND 47 94 48 97 3 Total Xylenes 150 ND 156 104 167 111 7 I I I I I '1 I I I I ND Not Detected MS Matrix Spike MSD Matrix Spike Duplicate % Recovery = ( conc MS or MSD - conc Sample) / ( conc Spiked) * 100 RPD = ( MS - MSD) I ( ( MS + MSD ) / 2 ) * 100 Recovery 0 out of 8 RPD 0 out of 4 Soil Quality Control Limits Benzene Toluene . outside of QC limits outside QC limits Recovery 70-130 RPD 25 ".25 Ethylbenzene . ,.. ·. Total Xylenes 290 TENNESSEE STREET · FAX (909) 793-1559 REDLANDS, CA 92373 I I CERTIFIED HAZARDOUS WASTE TESTING LABORATORY · CHEMICAL AND BIOLOGICAL ANALYSES Centrum Analytical Laboratories Laboratory Control Spike and Laboratory Control Spike duplicate Percent Recovery and RPD Summary Method: 8020 1 802 (BTEX) I I Date Received 05~04~94 Units ug/kg (ppb) Date Analyzed 05~05~94 Matrix Soil Job Number 6534 Sample Amount I g I Sample ID Ottawa Sand QC Batch 8020S0464 I I I Spiked Sample LCS % LCSD LCSD % Compound Conc Conc LCS Conc Recovery Conc Recovery RPD Benzene 50 ND 63 126 65 129 2 Toluene 50 ND 62 124 63 126 2 Ethyl-benzene 50 ND 54 108 55 110 2 TotalXylenes 150 ND 189 126 139 129 2 I I I I I I I ! I I ND LCS LCSD Not Detected Laboratory Control Spike Laboratory Contol Spike Duplicate % Recovery = ( conc LCS orLCSD - conc Sample) / ( conc Spiked) * 100 RPD = ( LCS - LCSD) ! ( (LCS +LCSD ) / 2 ) * 100 Recovery 0 out of 8 outside of QC limits RPD 0 out of 4 outside QC limits Soil Quality Control LimRs Benzene Toluene Ethylbenzene :,._. . Total Xylenes Recovery 70-130 · · ~ 70-130 70-130 70-130 290 TENNESSEE STREET · REDLANDS, CA 92373 · (909) 798-9336 RPD 25 25 125 -, 25 FAX (;0~) I I CERTIFIED HAZARDOUS WASTE TESTING LABORATORY * CHEMICAL AND BIOLOGICAL ANALYSES Centrum Analytical Laboratories Matrix Spike and Matrix Spike Duplicate Percent Recovery and RPD Summary Method: Modified 8015 I I Date Received 05/04/94 mg/kg (ppm) Units Date Analyzed 05/05/94 Matrix Soil i Job Number 6534 Sample Amount I g Sample ID 6535-1 QC Batch 8015GS0249 I I I Spiked Sample MS % MSD MSD % Compound Conc Conc MS Conc Recovery Conc Recovery RPD Gasoline 3.00 ND 2.63 87 2.28 76 13 I I I I I i I I I I ND Not Detected MS Matrix Spike MSD Matdx Spike Duplicate % Recovery = ( C°nc MS or MSD - conc Sample) / ( conc Spiked) * 100 RPD = ( MS - MSD) ! ( ( MS + MSD ) / 2 ) * 100 Recovery 0 out of 2 RPD 0 out of 1 outside of QC limits outside QC limits Soil Quality Control Limits Gasoline '. Recovery ,40-130 290 TENNESSEE STREET · REDLANDS, CA 92373 · (909) 79~.9~6 · FAX (909) 793-1559 * I i CERTIFIED HAZARDOUS WASTE TESTING LABORATORY · CHEMICAL AND BIOLOGICAL ANALYSES I I Centrum Analytical Laboratories Laboratory Control Spike and Laboratory Control Spike Duplicate Percent Recovery and RPD Summary Method: Modified 8015 Date Received 05~04~94 Units mg/kg (ppm) Date Analyzed 05~05~94 Matrix Soil Job Number 6534 Sample Amount I g Sample ID Ottawa Sand QC Batch 8015GS0249 I I I Spiked Sample LCS % Compound Conc Conc LSC Conc Recovery LCSD LCSD % Conc Recovery RPD Gasoline 3.00 ND 2.03 68 1.78 59 14 I I I I I I I I I I ND Not Detected LCS Matrix Spike LCSD Matrix Spike Duplicate % Recovery = ( conc LCS or LCSD - conc Sample) / ( conc Spiked) * 100 RPD = ( LCS -. LCS .D) I ( ( LCS + LCSD ) / 2 ) · 100 Recovery 0 out of 2 outside of QC limits RPD 0 out of I outside QC limits Soil Quality Control Limits Gasoline . Recovery -42-122 RPD 290 TENNESSEE STREET REDLANDS, CA 92373 · (909)798-9336 · FAX(909)793-1559 ~CENTRuMANALYTIcALLABoRATOnlES, InC. 290 TENNESSEE STREET * REDONe, CA 92373 * (~) 7M-~36 I I I mm m m m m m m CHAIN OF CUSTODY RECORD PAGE I OF / Client Name: ,' Sample Type # and Sample Date/Time $ - type of .um~r ~m.,~;~ u) ~: containers ions s-3 ~-3-~t :X ~,','~,~ ~'-I ,2.1' ~,~ Iz.. x ~-6 ~-3-.~ ~ o ,,)~.-z, 1~ ~r~ Relinquished by: (Signature) ~t~ime ~ ~tR~iv~u~~[°' [~r~o~ b~ ~ ~--~~ ~ ~' ' ~ ~ ~[ ~Samples sealed' ~ples chil~ ' ~YesYeS ~No~ No The dellve~ of ~mples and the signature on this chain of custody form eanetltutee eatharlzatlon to oe~orm the analyses s~clfl~ above under ~Courier ~ UPS/Fed-x ~ Mail ~ Hand Carried the Terms and Conditions set forth on the back hereof.