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1 <br /> V , <br /> PUBLIC HEALTH SERVICES aoQ.�o <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> sell <br /> Karen Furst, M.D., M.P.H. , Health Officer <br /> �rFORa <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> I <br /> BOB COCHRAN <br />{ CHEVRON PRODUCTS CO <br /> PO BOX 6004 <br /> SAN RAMON CA 94583 <br /> RE: CHEVRON STATION #9-3232 Site Code: #1161 <br /> 8660 LOWER SACRAMENTO RD <br /> STOCKTON CA 95210 <br /> WORKPLAN: Site Assessment Report and W. P. for Further Assessment <br /> DATED: October 23, 2001 <br /> PREPARED BY: Secor <br /> APPROVED: [x] <br /> DISAPPROVED: <br /> DU `` J] <br /> ADDENM NEEDED: Submit bv: <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN F&S 25299.37,subd(c)(3)]: <br /> 1 . To further delineate the vertical and lateral extent of soil and ground water contamination, 2 on-site and 5 off- <br /> site monitoring wells (I14W) shall be installed. Four of the MWs will be shallow (total depth of 50 feet) and 3 <br /> will be deep (total depth of 70 feet). These wells can be cluster well installations, but not nested as proposed in <br /> the Work Plan. <br /> 2. Soil and ground water samples will be collected and analyzed for: TPHg, BTEX, MtBE, DIPE, TAME, EtBE, <br /> TBA, EDB, and 1,2-DCA by 8260B. <br /> 3. A report of findings must be submitted to EHD and the CVRWQCB for review and comment. <br /> COMMENTS AND CONDITIONS: <br /> The "Tri-Regional Board Staff Recommendations For Preliminary Evaluation and Investigation of Underground Tank <br /> Sites" along with its "Appendix A" and "Appendix B" should be used as guidance. documents. All work and reports <br /> which require geological or engineering evaluation must be performed under the direction of an appropriate California <br /> registered or certified professional. <br /> DATED 1// Y/02- BY r✓t � <br /> Harlin KnollSenior REHS (209) 468-0337 <br /> cc: Secor <br /> A Division of San Joaquin County Health Care Services <br />