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k" KLEINFELDER <br /> B-7 Surface Water Monitoring <br /> 1. Prior to collecting surface water samples, the depth of water is estimated at a designated <br /> location in the surface water body. <br /> 2. Surface water samples are collected directly from the stream or surface water using a <br /> clean unpreserved plastic bottle, disposable bailer, bailer, coliwasa, DipstikTM, dipper, <br /> peristaltic pump, etc., or by directly filling the sample containers. Sampling equipment <br /> will either be disposable, dedicated or decontaminated in accordance with the above- <br /> defined decontamination protocols. Care is taken not to disturb the stream bottom and <br /> introduce sediment in the sample. The fluid is then poured into appropriate preserved or <br /> unpreserved bottles for the requested analysis. <br /> 3. The sample is labeled and immediately stored in an iced cooler pending transport to the <br /> analytical laboratory. The sample is logged on a chain-of-custody. <br /> B-8 TANK REMOVAL SAMPLING <br /> B-8.1 Collection of Soil Samples and Laboratory Analysis <br /> Soil and water samples will be collected during the tank removal operations in accordance with <br /> the current Leaking Underground Fuel Tank Field (LUFT) Manual and the Tri-Regional <br /> Guidelines issued by the California Regional Water Quality Control Board (RWQCB). <br /> A Kleinfelder, environmental geologist will be on site during the tank removal activities to <br /> collect soil samples for qualitative field screening and laboratory analysis. Tank excavation soil <br /> samples will be obtained by scraping the sidewalls or excavation bottom at the desired locations <br /> with the backhoe bucket. Samples will then be collected from the bucket by packing soil in a <br /> clean brass tube with a clean hand trowel. The soil samples may also be collected using a slide <br /> hammer lined with a clean brass tube with appropriate extension to reach the desired sampling <br /> depth. The collected brass tubes will then be sealed with Teflon sheets and tight fitting plastic <br /> caps. <br /> B-8.2 Collection of Water Samples and Laboratory Analysis <br /> If water is encountered in the excavation after the tank is removed, a representative sample will <br /> be collected for laboratory analysis. The tank excavation may be purged and allowed to refill <br /> 20-3712-08.E02/2018R 1090 Page B-9 <br /> ©1998,Kleinfelder,Inc. December 23, 1998 <br />