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• 0 <br /> surface,respectively.The location of each sample is shown in Figure 2. <br /> • Each soil sample was collected using the backhoe bucket. Each soil sample was collected near the teeth of <br /> the backhoe bucket by driving a six-inch brass sample ring into native soil within the bucket. Each soil <br /> sample was properly sealed, labeled, and immediately placed in an ice-chest containing ice for transport. <br /> The soil samples were delivered under proper chain-of-custody to a certified independent analytical <br /> laboratory. <br /> 3.3.3 Soil Stockpiles <br /> Six soil samples (composited into three samples at the analytical laboratory) were collected from the <br /> excavated soil stockpile at the site. Each soil sample was collected from a representative area of the <br /> stockpile by digging into the stockpile using a shovel and pushing a six-inch brass sample ring into the soil <br /> within the stockpile.The soil samples were properly sealed,labeled, and immediately placed in an ice-chest <br /> containing ice for transport. The soil samples were delivered under chain-of-custody to a certified <br /> independent analytical laboratory. <br /> 3.4 LABORATORY ANALYSIS <br /> . The soil samples collected from the site were transported the day of collection to Columbia Analytical <br /> Services Inc. in San Jose, California. The six soil samples collected from below the former tanks and <br /> below the dispenser islands at the site were analyzed for Total Petroleum Hydrocarbons as Gasoline <br /> (TPH-G), and Diesel (TPH-D)according to Environmental Protection Agency(EPA)Method 8015 <br /> Modified, for Benzene,Toluene, Ethylbenzene, Total Xylenes (BTEX)using EPA Method 8020, for <br /> Oxygenate Compounds using EPA Method 8260, and for total lead. The three composite soil samples <br /> collected from the soil stockpiles were analyzed for TPH-G, and TPH-D according to EPA Method 8015 <br /> Modified, for BTEX using EPA Method 8020, and for Oxygenate Compounds using EPA Method 8260. <br /> 3.5 BACKFILLING AND RESURFACING THE EXCAVATION <br /> On December 19, 1997,H.B. Covey backfilled the tank excavation with soil previously excavated from the <br /> tank basin and imported fill material. The backfill material was used to bring the excavation up to within <br /> four inches of the site grade. On December 22, 1997,H.B. covey resurfaced the excavation with concrete <br /> to match the surrounding grade. <br /> 6 <br />