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I � • <br /> Ground-Water Sampling <br /> Prior to developing, the wells will be subjectively analyzed for floating product and/or product <br /> sheen by lowering a bailer approximately halfway through the airtwater interface in the well. Depth <br /> to water in each well will also be measured The wells will then be developed by swabbing, surge- <br /> pumping, or another suitable method until the discharge from the wells is relatively clean and free <br /> of suspended sediment Each well will then be purged of approximately three to four well volumes <br /> of water and/or until temperature, pH, and conductivity readings stabilize Each well will then <br />' again be subjectively analyzed <br /> Any floating product observed in the wells will be removed prior to sampling, using a bailer If the <br /> product can not be removed from any of the wells, a final measurement of the product thickness <br />' will be made and that particular well will not be sampled. <br />' Ground-water level will be allowed to recover to approximate static conditions in the wells, and the <br /> water level will again be measured If the water level is at or greater than 80 percent of the initial <br /> measured level, a clean bailer will be used to obtain a sample from the surface of the water in the <br />' well. Any subjective evidence of product detected in the well will be recorded <br /> Water samples will be collected using a Teflon bailer cleaned with Alconox and rinsed with tap and <br />' deionized water The water samples will be sealed in laboratory-cleaned, 40 milliliter glass vials <br /> with Teflon-lined lids The samples will then be labeled and immediately placed in iced storage. <br /> A chain-of-custody record will be initiated by the field geologist or engineer and will accompany <br /> the samples to a laboratory certified in the State of California for the analyses requested A copy <br /> of the chain-of-custody record will be included in our final report <br /> 1 <br />