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Northern California Regional Officer 41674 Christy Street, Fremont,CA 94538-3114 %,.W)659-0404 Fax:(415)651-4677 Lic.#596545 <br /> September 28, 1990 <br /> San Joaquin County Health Services 0 C T j <br /> Environmental Health Division ENVIRONnnENTAL HEALTH <br /> 445 North San Joaquin Street PEF6siT/SERV1i:E$ <br /> Stockton, CA 95202-2026 <br /> Attention: Ms. Diane Henson <br /> Subject: Addendum to Preliminary Soil and Groundwater Investigation <br /> Quik Stop Market No. 132 <br /> 3555 West Hammer Lane, Stockton, California <br /> Exceltech Project No. 349132-31 <br /> Dear Ms. Henson: <br /> In regards to our conversation of September 17, 1990, Exceltech, Inc., is pleased to submit the <br /> following addendum to the Preliminary Soil and Groundwater Investigation Report, September 19, <br /> 1990. <br /> Exceltech expects to excavate approximately 300 cubic yards of soil from the site noted above. <br /> The soil will be removed from the site as soon as possible and transported to Telic Engineering <br /> Coroort 28] North Cardinal Avenue, Stockton, for ee iea,g}oc trV �u1oMPr. d� <br /> Ron Archer Civil Engineer of Pleasanton, California, surveyed the tops of the PVC well casing 0 <br /> and the vault boxes to accurately locate the monitoring wells. This survey was necessary to <br /> determine the groundwater gradient, to draft accurate plot plans, and to determine the surface <br /> elevations of the well casings.. The licensed surveyors report is enclosed. <br /> A site plan and a groundwater elevation contour map, based on the survey, are enclosed. The <br /> gradient appears to be toward the east. <br /> If you have any questions regarding this addendum to our September 19, 1990 draft report,please <br /> call. <br /> Sincerely, <br /> E celt ch, Inc. <br /> y <br /> J hn Monrce Neil a 9q e, C.E.G. 398 <br /> Staff Geologist Setd rProgramGeologist <br /> JM/NHZ/sr <br /> Enclosure <br /> �JJ 1 v Recyclable and made from recycled paper. <br />