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I <br /> GEOTECHNICAL ENGINEERS AND GEOLOTS I <br /> �rail SEARC11mirc. <br /> J 6840 VIA DEL ORO, SUITE 110, SAN JOSE,CALIFORNIA 95119-1348 (408)362-4920;FAX(408)362-4926 <br /> Project No. E6576.001 <br /> 22 March 1995 <br /> Mr. Don Hoffman <br /> ` 11820 Dublin Boulevard . <br /> Dublin, CA 94568 <br /> Subject: Property at 835 and 861 West Clover Road <br /> (APN 214-180-12 & 13) <br /> Tracy, California <br /> ADDITIONAL GROUNDWATER SAMPLING" AND <br /> AND EXCAVATION OF CONTAMINATED SOIL <br /> Refs: 1) Report on "Goundwater Sampling and <br /> Analysis" by Terrasearch,. Inc., <br /> Dated 15 June 1994 <br /> F <br /> 2) Phase II Work Plan by Terrasearch, Inc. <br /> Dated 13 October 1994 <br /> 3) Ainended Work Plan by Terrasearch, Inc. <br /> Dated 3 November 1994 <br /> Dear Mr. Hoffinan: <br /> rAt your request, we have conducted additional investigation and remediation. <br /> �-+ recommended by the San Joaquin County Environmental Health Division. The work included <br /> the following steps: <br /> a) Preliminary estimation of previous site of excavated tanks; <br /> b) Shallow exploratory.borings; <br /> C) Installation of a fourth monitoring well with subsequent water sampling; <br /> d) Excavation of contaminated soil; <br /> e) Confirmatory sampling at the limits of the excavation and in the "clean" <br /> stockpiled overburden material; <br /> f) Sampling of "contaminated" stockpile according to dump site protocols,- <br /> g) Calculation of groundwater gradient and mass-balanceequations; and <br /> h) Preparation of this report. . <br /> �: 11840 DUBLIN BOULEVARD,DUBLIN,CALIFORNIA 94568 (510)833-9297 FAX(510)833-9548 <br />