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781 SWIFT.WAY. <br /> WKA No. 1735.03 <br /> January 3, 1995 <br /> Page 3 7 <br /> The wells will be developed using.a vented surge block and pumped until relatively free of <br /> sediment and/or until stabilized pH, temperature and conductivity readings are attained. The <br /> water purged during development will be placed in sealed and labeled 55-gallein drums and stored <br /> on site. <br /> Following construction and development, water samples will be obtained from each of the six <br /> wells. Prior to sampling, a water level measurement will be recorded, and the wells will be <br /> checked for the presence of free product using a clear bailer. The wells will then be purged of at <br /> least three well volumes of water or until stabilized pH, temperature and conductivity readings <br /> are attained; purge water will be stored in sealed and labeled, 55-gallon drums as described <br /> above. Subsequent to purging, water samples will be obtained with disposable bailers and <br /> decanted into appropriate sample containers provided by the laboratory. The water samples will <br /> be stored on ice in an ice chest and submitted"under chain-of-custody to a California-certified <br /> laboratory, .along with a travel blank, for analysis of TPH using Modified EPA test method 8015 <br /> and BTEX using EPA test method 602. <br /> Subsequent to construction, the three additional wells and three existing wells will be surveyed to <br /> provide basis for calculation of ground water flow direction and gradient. <br /> Reporting/Time Line <br /> The proposed work will adhere to the reporting procedures and will be completed within the time <br /> line presented in our Workplan For Monitoring Well Installation, dated August 13, 1992. If you <br /> have any questions, please do not hesitate to call. <br /> Wallace ■ Kuhl & Associates, Inc. <br /> Robert Kull Eric Hubbard <br /> Staff Engineer Registered Geologist #4807 <br /> RNK:EJH:rbn Roh417J5-03.WP2 INK <br /> WALLACE•KUHL <br /> Reryy&dpape &ASSOCIATES INC. <br />