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STATE OF CALIFORNIA-Environmental Prot `- Agency PETE WILSON Govemor <br /> CALIFORNIA REGIONAL WAM QUALITY CONTROL BOARD ' -rl <br /> CENTRAL VALLEY REGION /Mv/ d._. <br /> S3443 RoutW Road,acramento, 9sazi a 9SH49 Sr n��41 <br /> PHONE:(916)255.3000 3 <br /> FAX(916)255-3015 A.06 <br /> 21 February 1995 <br /> Mr. John Welch <br /> Attorney at Law <br /> 2800 West March Lane, Suite 490 <br /> Stockton, CA 95219 <br /> SITE ASSESSMENT WORK PLAN ADDENDUM, INDEPENDENT TRUCKING FACILITY, <br /> 1145 W. CHARTER WAY, STOCKTON, SAN JOAQUIN COUNTY <br /> I have reviewed the 7 February 1995 Interim Report Covering Results of Excavation Work Done & <br /> Addendum to Work Plan Dated 7 November 1994 submitted by William J. Hunter& Associates for the <br /> Independent Trucking facility in Stockton. The revised work plan adequately addresses the issues in my <br /> 9 December 1994 letter regarding further assessment work needed at the site. Four ground water <br /> monitoring wells and several borings will now be drilled to better characterize the extent of soil and <br /> ground water contamination. However, it is unclear what your plans are regarding the contaminated soils <br /> still in place around the former 5,000 and 10,000 gallon underground storage tanks and associated piping. <br /> Soil with up to 6,000 mg/kg of total petroleum hydrocarbons as diesel is still in place and now covered <br /> with clean gravel. <br /> In accordance with the revised work plan, by 1 June 1995, you will submit a report of the results from <br /> this phase of the investigation. By 31 March 1995, please submit a work plan to further remediate the <br /> soils associated with the former underground storage tanks. <br /> If you have any questions, you may call me at (916)255-3077. <br /> WEISS <br /> Engineering Geologist <br /> JMW:jmw/Isb <br /> CC: San Joaquin County Public Health Services, Stockton <br /> Mr. Larry Bradfish, Gray, Cary, Ware&Freidenrich, Palo Alto <br />