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As a cooperating party, MSC inspected, repaired and reconditioned all <br />monitoring wells (MW-1 through 4) in April and May 2003. MSC <br />submitted a well condition repair and redevelopment report to the <br />SJCEHD and the CVRWQCB, in May 2003. <br />As a cooperating party, per the CVRWQCB's request, MSC designed and <br />developed a sampling and analysis plan (SAP) and submitted it to the <br />CVRWQCB and the SJCEHD in early June 2003. The SAP was <br />approved by the CVRWQCB, however, the CVRWQCB requested that <br />additional constituents are also sampled and analyzed as a part and <br />parcel to the SAP. In good faith, MSC agreed to sample the ground water <br />and analyze them for the constituents listed below as was requested by <br />the CVRWQCB: <br />>> Dissolved Nickel (Ni): EPA Method 6010 B <br />Dissolved Vanadium: EPA Method 6010 B <br />Sulfur (S): EPA Method 300 <br />)=. Sulfate (504): EPA Method 300 <br />Total dissolved solids (TDS): SM 2540 C <br />Total Organic Carbon (TOC): EPA Method 415.1 <br />MSC implemented the SAP in June 2003 as set forth in the forthcoming <br />sections of this report. <br />II. Site Geology and Hydrogeology <br />Previous subsurface investigations conducted by Dames and Moore <br />indicates that the site is comprised of the following: <br />The Dames and Moore, December 20, 1991, Baseline Site Investigation <br />report indicates that the surface material has had a mixture of residual <br />coal, petroleum Coke and Copper concentrate at different times. It <br />should, however, be noted that during the months of January and <br />February, 2003, MSC undertook a extensive surface material removal in <br />order to remove all residual surface materials as was requested by the <br />Port of Stockton's Properties Management Department and the Port's <br />environmental consultant, Jones and Stokes. In addition, in the years <br />past, MSC removed the copper concentrate pile from the property. <br />According to Dames and Moore, December 20, 1991, Baseline Site <br />Investigation (BSI) report, the native subsurface materials are primarily <br />very fine- grained sediments. There are three classes of materials that <br />are located in three different zones based on their grain size. Silty sand, <br />sandy silt, fine-grained silts, and silty clayey sands make up the first layer. <br />These formations appear to exist in the majority of the site's subsurface as <br />2