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Soil borings will be advanced by a truck-mounted Geoprobe 5400 (or 6600) percussion/probing machine, equipped with a GH-40 percussion hammer. The percussion/probing machines will advance a 1.5-inch carbide-tipped drill bit through the bituminous-concrete pavement or portland-cement- concrete pavement to allow the probe rods and soil sampler access to the subsurface soils. Discrete sampling will be performed by driving a large-bore sampler assembly. The large-bore sampler assembly will be driven 2 feet to completely fill the sample tube. The large-bore sampler will be decontaminated after collecting each soil sample. The decontamination sequence will consist of gross soil removal, scrubbing with a solution of Alconox detergent and potable tap water, and a potable tap water rinse. Soil samples will be collected for chemical analysis by driving a large-bore sampler (1.375-inch outer diameter, 24-inch inner length) by use of a percussion hammer. The samples will be collected in Cellulose Acetate Butyrate(CAB)liners that measured 1.0625 inch in diameter and 22 inches in length. At the desired sample depth, the CAB liners will be cut to a length of 6 inches. Ends of the CAB liners will be sealed with teflon film, followed by vinyl end caps. The sealed liners will be labeled, placed in plastic zip-lock bags, and immediately stored in a cooler at approximately 4°C. Samples from soil borings B3, B12 and B13 will be labeled for analysis by DOHS LUFT procedure for diesel. Samples from soil borings B1, B2, B4, B5, B6, B7, B8, B9, B10, B11, B12 and B13 will be labeled for analysis by EPA Method 418.1 for total recoverable petroleum hydrocarbons (TRPH) and EPA Method 8260 for volatile organics (VO). Samples from soil borings B12 and B13 will be labeled for analysis by 6020A for metals (CAM-17). The information below will be written on every sample label: • Sample identification number, • Date and time of sampling, • Name and telephone number of sample collector. Samples will be delivered to American Scientific Laboratories. Strict chain-of-custody documentation will be followed in the handling of all samples. A Chain-Of-Custody Record (Appendix C) will accompany samples when they are shipped to the laboratory. The Chain-of-Custody Record documents the transfer of samples from one party to another. Other information that will be noted on this form is as follows: • Project address, • Sample identification number, • Date and time of sampling, • Type of sample, • Type of analysis to be performed, and • Name and telephone number of sample collector. After the collection of soil samples for chemical analyses, the soil in the remaining portion of the CAB liner will be used for lithologic description. This soil will be compared to the soil sample for visual consistency. Lithologic descriptions of soil samples will be recorded on the boring logs in accordance GEE 3 Work Plan Phase H ESA Stockton