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• <br /> /10aytori <br /> a.o�o <br /> content using the Unified Soil Classification System (USCS) as a guide, and samples <br /> were selected from each boring location and placed into a sealed plastic bag for field <br /> screening using a photoionization detector(PID) to evaluate for the presence of volatile <br /> vapors that may be released from the soil sample and collect in the headspace of the bag. <br /> 3.3. SOIL SAMPLING <br /> At depths up to 5 feet below ground surface, soil samples were collected using a slide <br /> hammer. These soil samples were collected in brass tubes within a sample barrel in the <br /> slide hammer. The brass tubes were then sealed with Teflon tape and capped with plastic <br /> end caps. At depths greater than 5 feet bgs, the soil sample cores selected for laboratory <br /> analysis were cut from the plastic liners. Upon retrieval, the liner ends were covered with <br /> Teflon tape and plastic end caps. Following their collection, all samples were labeled and <br /> placed in a pre-chilled ice chest for delivery to the analytical laboratory. Chain-of- <br /> custody records were completed and accompanied the sample shipments to the <br /> laboratory. <br /> All borings were sealed and abandoned in accordance with SJCEHD requirements. The <br /> drill cuttings were stockpiled on plastic sheeting and covered, pending the receipt of <br /> analytical data to arrange for disposal at an appropriate disposal facility. <br /> 3.4. ANALYTICAL TESTING OF SOIL SAMPLES <br /> All soil samples collected were submitted to SPL Laboratory of Houston, Texas, a state <br /> of California certified laboratory, for analysis according to the following method: <br /> • Diesel/crude oil range petroleum hydrocarbons (DRO) using United States <br /> Environmental Protection Agency(USEPA)Method 8015B Modified(8015B). <br /> The reported DRO results are for carbon ranges C10 through C35, extending into <br /> the oil range hydrocarbons. <br /> Selected soil samples from borings B2 and B5 were also analyzed according to the <br /> following methods: <br /> • Volatile Organic Compounds (VOCs) according to USEPA Method 8260 <br /> I • Semi-Volatile Organic Compounds according to according to USEPA Method <br /> 8270. <br /> • Metals, according to California Administrative Manual (CAM 17 metals). <br /> Soil sample B2 at 4.0'—4.5'was also analyzed for Gasoline Range Organics and DRO <br /> using Toxicity Characteristic Leaching Procedure (TCLP). <br /> S:1ES\PR0MCTS\2004\04696 SAell Tracy Pump Station\Repos\I W4 .DOC <br /> 2 <br />