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• 9838 Old Placerville Road,Suite 100 Sacramento,CA 95827-3559 <br /> July 9, 1996 <br /> Project No. 05100469 <br /> Mr. Michael J. Infuma, R.E.H.S. <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 388 R <br /> F'�-�F <br /> Stockton, California 95201-0388 <br /> Re: Workplan for Installation of Monitoring Wells J U L 101996 <br /> Southern Pacific Transportation Company ENVIRONMENTAL <br /> Old Tracy Yard - Tracy, California PERMIT / SERVICE`:. <br /> Dear Mr. Infuma: <br /> Terranext, on behalf of Southern Pacific Transportation Company (SPTCo), has prepared this <br /> workplan per your request of July 3, 1996. This workplan summarizes the objective and <br /> scope of work for the installation of four ground water monitoring wells at the Old Tracy <br /> Yard in Tracy, California (Figure 1). A Site Health and Safety Plan is included as <br /> Attachment A. <br /> OBJECTIVE AND SCOPE OF WORK <br /> The objective of monitoring well installation is to assess the impact, if any, to ground water <br /> from lead in site soil. To achieve this objective, Terranext has proposed (letter dated <br /> February 15, 1996) and received approval from Mr. Joel Weiss of the Regional Water <br /> Quality Control Board - Central Valley Region (Regional Board) (telephone conference on <br /> June 11, 1996) for the installation of four additional ground water monitoring wells as shown <br /> on Figure 2. Note that two monitoring wells (MW-1 and MW-2) currently are in place. <br /> The scope of work and planned field procedures are as follows: <br /> 1. The construction of four ground water monitoring wells to a maximum depth of <br /> 20 feet below ground surface (bgs). <br /> * The wells will be installed using a truck mounted drilling rig equipped <br /> with 10-inch outside diameter hollow stem augers. <br /> * Soil samples will be collected for lithologic identification only using an <br /> 18-inch split spoon sampler at 5-foot intervals. <br /> 469-029.Itr/07-09-96/u/keydata/oldtracy/letters <br /> Telephone: 916 369.8971 Facsimile: 916 369.8370 www.terranext.com <br />