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• Page 9 <br /> 3.4 Sampling Equipment and Procedures <br /> One bottom material sample will be obtained from within each two-acre grid area. Samples will <br /> be collected at each sampling location from ground surface to a maximum of 18 inches below <br /> ground surface or until bedrock is encountered. A hand auger will be used to collect the samples. <br /> At locations where bedrock is near ground surface and a hand auger is insufficient, a stainless <br /> steel shovel and bowl will be used to collect the samples. <br /> The minimum sample size needed for analyses is approximately 5.5 kg. If this sample size is <br /> unavailable within a grid, no sample will be taken as the potential impact from the bottom <br /> material in such a grid would be negligible. <br /> After collection of each sample, the sampling equipment will be properly cleaned and <br /> decontaminated before reuse or storage according to procedures outlined in Appendix B. Table 4 <br /> lists required sample containers, sample volumes, and holding times. <br /> 3.5 Reservoir Bottom Material Analysis <br /> • <br /> The samples of bottom material will be analyzed for metals leachability, clay content, total <br /> organic carbon, and total recoverable metals as summarized in Table 5. Fifty percent of the 30 <br /> collected samples will be archived in case additional verification is required. Laboratory analysis <br /> will be completed according to EPA's CLP standards (EPA, 1989). <br /> Table 6 summarizes analytical procedures and reporting limits. Appendix C contains the Metals <br /> Leachability method. <br /> • <br /> CO2076 <br /> PRIVILEGED AND CONFIDENTIAL <br /> ---Environmental <br /> C:�PROJECTSWI02-OOIULI176102.001[6120/96[ �� � ��� <br />