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' k9 KLEINFELDER <br /> ' 4. 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 /> ' C-6 Leachate Monitoring <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 aconductivity-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 /> ' 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 /> ' C-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 /> t <br /> ' 20-2594-03.004/2011R447 Page <br /> Copyright 2001,Kleinfelder,Inc. June 8,2000101 <br />