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3, The sample is labeled and immediately stored in an iced cooler pending transport to the analytical laboratory. The sample is logged on a chain-of-custody. A-8 TANK REMOVAL SAMPLING A-8.1 Collection of Soil Samples and Laboratory Analysis Soil and water samples will be collected during the tank removal operations in accordance with the current Leaking Underground Fuel Tank Field {LOFT) Manual and the Tri-Regional Guidelines issued by the California Regional Water Quality Control Board (RWQCB). A Kleinfelder, environmental geologist will be on site during the tank removal activities to collect soil samples for qualitative field screening and laboratory analysis. Tank excavation soil samples will be obtained by scraping the sidewalls or excavation bottom at the desired locations with the backhoe bucket. Samples will then be collected from the bucket by packing soil in a clean brass tube with a clean hand trowel. The soil samples may also be collected using a slide hammer lined with a clean brass tube with appropriate extension to reach the desired sampling depth. The collected brass tubes will then be sealed with Teflon sheets and tight fitting plastic caps. A-8.2 Collection of Water Samples and Laboratory Analysis If water is encountered in the excavation after the tank is removed, a representative sample will be collected for laboratory analysis. The tank excavation may be purged and allowed to refill before sampling. The water sample will be collected using a clean disposable bailer with new nylon cord. The bailer will be retrieved and the water will be contained in appropriate bottles supplied by the analytical laboratory for the requested analysis. In accordance with the Tri-Regional Guidelines one water sample will be collected from the tank excavation. The water sample will be delivered under chain-of-custody procedures to a state certified laboratory. 6 7 4 51.W P 1/ST 0 6 R29 511"F B a v Page A-3 March 31,2006 2006 Kleinfelder, Inc.