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k'q KLEINFELDER <br /> 5 After the sample is collected, the lysimeter vacuum is reset to the manufacturer's <br /> recommended value The lysimeter is also tested to evaluate potential leaks that may <br /> cause vacuum pressure loss <br /> B-6 Leachate Monitorin <br />' 1 The leachate riser or wells are first opened and allowed to equilibrate with the <br /> atmosphere <br /> 2 The leachate elevation is then measured from a set location using a conductivity-based <br /> water-level meter The level is generally measured from a surveyed mark on the north <br />' rim of the casing <br /> 3 A leachate sample is then collected using a clean, disposable bailer <br /> le is labeled and immediate) stored in an iced cooler pending transport to the <br /> 4 The camp y P g P <br /> analytical laboratory The sample is logged on a chain-of-custody <br /> B-7 Surface Water Monitoring <br />' l 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, Dipstik"', 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 <br /> 3 Care is taken not to disturb the stream bottom and introduce sediment in the sample The <br /> fluid is then poured into appropriate preserved or unpreserved bottles for the requested <br />' analysis <br /> 4 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 Tn-Regional <br /> Guidelines issued by the California Regional Water Quality Control Board(RWQCB) <br /> I20-1417-16 E04/ST02R038 Page B-7 <br /> 02002 Kletnfelder,Inc June 7,2002 <br />