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rKLEINFELDER <br /> ' excavation soil samples will be obtained by scraping the sidewalls or excavation bottom <br /> at the desired locations with the backhoe bucket. Samples will then be collected from <br /> r the bucket by packing soil in a clean brass tube with a clean hand trowel. The soil <br /> samples may also be collected using a slide hammer lined with a clean brass tube with <br /> appropriate extension to reach the desired sampling depth. The collected brass tubes <br /> rwill then be sealed with Teflon sheets and tight fitting plastic caps. <br /> A-8.2 Collection of Water Samples and Laboratory Analysis <br /> If water is encountered in the excavation after the tank is removed, a representative <br /> sample will be collected for laboratory analysis. The tank excavation may be purged <br /> r and allowed to refill before sampling. The water sample will be collected using a clean <br /> disposable bailer with new nylon cord. The bailer will be retrieved and the water will be <br /> contained in appropriate bottles supplied by the analytical laboratory for the requested <br /> ranalysis. <br /> In accordance with the Tri-Regional Guidelines one water sample will be collected from <br /> r the tank excavation. The water sample will be delivered under chain-of-custody <br /> procedures to a state certified laboratory. <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> r <br /> I <br /> r <br /> r <br /> r <br /> r20-3978-03.MN7/ST08R117 February 1,2008 <br /> ©2008 Kleinfelder Page A-8 <br /> r <br />