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v <br /> 3. <br /> j - <br /> During sampling, latex gloves will be worn to prevent cross- <br /> contamination with other samples. The disposable gloves will <br /> be discarded after collecting :samples from each la-inch <br /> sample drive. <br /> Soil samples will be collected at five foot intervals, at <br /> changes in lithology and intervals of obvious contamination <br /> in order to develop a complete profile of soil contamination. <br /> The soil samples shall not be comPosited. Soil borings will <br /> i = extend through the antire interval of contaminated soil and <br /> will terminate if saturated soil interval is encountered. <br /> 2. Sample Collection During Tank Removal <br /> Soil, samples will be collected as soon as <br /> removal of the tank. Where feasible preparations passible after <br /> soil sampling will be made prier to tank removal . Soil <br /> samples collected from a backhoe bucket or directly from the <br /> 1.7 excavation floor will be collected in a thin-walled stainless <br /> steel or grass cylinder at least three inches long by one <br /> ;FE inch in diameter. From 3 to 24 inches of soil will be <br /> k� removed from the immediate surface area where the sample is <br /> to be taken and the cylinder then ,pounded into the soil with <br /> a wooden mallet, bulk density driver, or other decontaminated <br /> ;a driving device. No head space will be present in the <br /> cylinder once the sample is collected. Care will be taken to <br /> avoid contamination of both the inside and outside of the <br /> cylinder as well as its contents. During sampling, latex <br /> gloves will be worn to prevent cross contamination with other <br /> samples. One pair of the disposable gloves will be dedicated <br /> ,x to each sample collected. <br /> in <br /> Once the sample is collected, each end of the <br /> cylinder will <br /> �.� be covered with aluminum foil and then capped with a <br /> polyethylene lid, taped, and labeled. The sample will then <br /> be individually sealed in a ziplock bag and immediately <br /> placed in an ice chest containing dry ice or frozen "blue <br /> ice" for delivery to a state certified laboratory. Sample <br /> identification, storage and transportation will be conducted <br /> as outlined in the previous section. <br /> 3. Sampling from Soil Piles <br /> Sof..l samples will be collected and transported from excavated <br /> material in the manner described in the previous section, <br /> however, a backhoe will not be utilized. If composite <br /> -. r- samples are collected, .four brass cylinders will be collected <br /> for every SD cubic yards of material to ba sampled. The <br /> samples will be composited by the state certified analytical <br /> laboratory personnel prior to testing. <br />