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0 • <br />APPENDIX II <br />CONFIRMATORY SOIL SAMPLES <br />The type and number of samples to be collected will be dependent upon whether or not water <br />is present in the excavation, and if obviously contaminated areas are detected in locations <br />other than those proposed. <br />If water is not present in the tank excavation, only soil samples will be collected. Samples will <br />be collected from beneath the base of the excavation a maximum of 3 feet into the underlying <br />soil. Two soil samples will be collected, one at each end of each tank as it was formerly <br />positioned in the excavation. One soil sample will also be collected beneath every 20 feet of <br />UST related pipes removed. <br />If water is present in the tank excavation, both soil and water samples will be collected as <br />described previously, except that they will be collected from the excavation wall at the <br />soil/ground water interface at each end of the tank. A single water sample will be collected <br />from the excavation. Prior to sampling, the presence of floating product will be determined. <br />The excavation will be carefully purged of all standing water by pumping and allowed to refill <br />prior to sample collection. All purged water will be stored separately onsite pending the <br />receipt of analytical results which will indicate final disposition; either transport and disposal <br />as a hazardous waste, or disposal into the storm drain system. Should the purge water be <br />determined to be a hazardous waste, it will be transported by a State of California licensed <br />hazardous waste hauler (AEMC) under hazardous waste manifest to a TSD facility for <br />disposal. <br />Soil samples will be collected in 3- to 6 -inch long brass liners using a drive -tube type sampler <br />which will be driven into the ground using a rubber mallet. The sampler will be sufficiently <br />driven into the soil profile so as to allow no headspace in the brass liner. Following retrieval, <br />nips -as <br />