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Proposal No.02-002 <br /> ese II Environmental Site Assessment/StocktoOA February 3,2006 <br /> PROPOSED WORK <br /> TERRASEARCH, inc. proposes the following four tasks will be performed: <br /> TASK 1. SUBSURFACE SOIL AND GROUNDWATER SAMPLING ACTIVTIES <br /> Once a drilling permit is obtained through the San Joaquin county Environmental Health <br /> Management (SJCEHM) and underground service alert (USA) has cleared the borings, a <br /> TERRASEARCH, inc. field geologist will observe the advancement of three (3) borings to <br /> groundwater by a State-licensed direct-push drilling contractor in the area of the former historical <br /> USTs, clarifier/sump and adjacent to Oxychem on 2150 West Charter Way. Soil samples will <br /> be collected from the borings for description and possible laboratory analysis. Each boring will <br /> be logged according to the United Soil Classification System (USCS) by the field geologist. <br /> Each soil sample collected for laboratory analysis will be capped, labeled and placed within a <br /> pre-chilled ice-chest for temporary storage. At least two soil samples per boring will be <br /> submitted for laboratory analysis. <br /> The soil samples submitted for laboratory analysis will be capped, labeled and placed into a pre- <br /> chilled ice-chest and delivered under chain-of-custody documentation to a State-certified <br /> hazardous waste testing laboratory for analysis. The soil samples will be analyzed for total <br /> petroleum hydrocarbons reported as gasoline (TPHg); total extractable petroleum hydrocarbons <br /> reported as diesel and motor-oil (TEPHd and TEPHmo); volatile organic compounds (VOCs); <br /> semi-volatile organics (SVOs); PCBs and CAM 17 metals using Environmental Protection <br /> Agency (EPA) Methods 8021, 8015 (modified), 8260, 8270, 8080 and 6010/7000 series. <br /> Once groundwater is encountered in each boring, groundwater samples will be collected using <br /> disposable bailers, which will be decanted into laboratory supplied containers. Each set of <br /> groundwater samples will be capped, checked for headspace, labeled and placed into a pre- <br /> chilled ice-chest for temporary storage. The groundwater samples will be submitted to a State- <br /> certified hazardous waste testing laboratory for analysis. The four groundwater samples will be <br /> analyzed for TPHg, TEPHd, TEPHmo, VOCs, SVOs, PCBs and CAM 17 metals EPA Methods <br /> 8021, 8015 (modified), 8260, 8270, 8080 and 6010/7000 series. The laboratory will filter the <br /> CAM 17 metal samples prior to analysis. Soil and groundwater samples will be analyzed on <br /> standard turn-around time basis. The borings will be backfilled with neat cement after sampling <br /> activities are completed. <br /> TASK 2. SURFICL4L SOIL EVALUATION FOR PESTICIDES AND HYDROCARBONS <br /> A TERRASEARCH, inc. field geologist will visit the subject property and collect 8 four point <br /> composite surficial soil samples (32-discrete surficial soil samples) at various randomly selected <br /> locations on the property according to sampling Method SW-846. Each soil sample will be <br /> collected from approximately 0.5 to 2 foot below ground surface (bgs) using clean brass liners, <br /> which will be capped, labeled and placed in a pre-chilled ice chest for temporary storage. The <br /> soil samples will be delivered under chain-of-custody documentation to a State-certified <br /> hazardous waste testing laboratory for analysis. All 32-discrete surficial soil samples will be <br /> TERRASEARCH, inc. Page 3 <br />