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ATTACHMENT A <br /> FIELD AND LABORATORY PROCEDURES <br /> Soil Sampling <br /> Soil samples will be collected by advancing 2-inch-diameter brass sample liners into <br /> undisturbed soil, or soil .removed from an excavation -by a backhoe bucket. .Soil samples <br /> for chemical analysis will be retained in the brass liners, labeled, and capped with Teflon <br /> sheets and plastic end caps. The samples will then be sealed in zip-lock bags, placed on <br /> ice, and transported to the laboratory accompanied by the appropriate chain-of-custody <br /> documentation. <br /> Soil Sampling for Stockpiled Soil <br /> Soil samples will be collected by advancing 2-inch diameter brass sample liners <br /> approximately six inches to one foot into the soil stockpile. One discrete sample will be <br /> collected per approximately 50 cubic yards of soil. Soil samples for chemical analysis will <br /> be retained in the brass liners, labeled, and capped with Teflon sheets and plastic end caps. <br /> The samples will then be sealed in zip-lock bags, placed on ice, and transported to the <br /> laboratory accompanied by the appropriate chain-of-custody documentation. <br /> Laboratory Analysis of Soil Samples <br /> Analysis for TPH-g and TPH-d will be performed by modified EPA method 8015. <br /> Analysis for benzene, toluene, ethylbenzene, xylenes, and MtBE will be performed by EPA <br /> Method 8020. Fuel oxygenates DIPE, EtBE, MtBE, TAME, and TBA will be analyzed <br /> by EPA Method 8260. Lead analysis will be performed by EPA Method 6010. <br />