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tot <br /> KLEINFELDER <br /> An employee owned company <br /> November 18, 2004 <br /> File No. 49014.1 <br /> Mr. A.K. Jain <br /> Department of General Services <br /> RESD/PSB/Seismic & Special Programs <br /> 707 3rd Street, Suit 4-430 <br /> West Sacramento, CA 95605 <br /> Subject: Sensitive Receptor Survey Report <br /> 1,► California Highway Patrol—Tracy <br /> 385 Grantline Road <br /> Tracy, California 95376 <br /> Dear Mr. Jain: <br /> Attached is Kleinfelder's report describing the findings of a Sensitive Receptor Survey <br /> performed for the California Highway.Patrol (CHP) facility located on the northeast corner of <br /> Buthmann Avenue and Grantline Road (385 West Grantline Road) in Tracy California. The <br /> work was performed as outlined in Kleinfelder's Proposal & Cost Estimate for Additional Site <br /> Investigation, dated July 26, 2004. <br /> BACKGROUND <br /> An investigation of the soil near a single wall fiberglass underground storage tank (UST) was <br /> performed as a part of 1998 UST upgrade requirements. Impacted soil was found to exist in the <br /> immediate vicinity of the UST. The tank was removed in May 2000, and three monitoring wells <br /> (MW-1 through MW-3) were installed in June 2000. A fourth, deep monitoring well (MW-4) <br /> was installed in April 2004. On July 19, 2004 the San Joaquin County Department of Health and <br /> Human Services Division of Environmental Health issued a letter reviewing the "Report of <br /> Monitoring Well Installation (MW-4) and Quarterly Groundwater Monitoring and Sampling", <br /> dated May 26, 2004. In a letter dated July 19, 2004, San Joaquin County requested the following <br /> actions: <br /> • Performa groundwater sampling of the existing monitoring well network. <br /> • Conduct a sensitive receptor survey within a 2,000-foot radius of the site. <br /> • Conduct a survey of the "x", "y" and "z" coordinates of the top of casing for the four <br /> monitoring wells in accordance with the State Water Resources Control Board UST <br /> �- Program—AB2886 (Electronic Reporting)regulations. <br /> • Electronically submit well survey data along with analytical data from soil and water <br /> samples collected from the site through Geotracker to the State Water Resources Control <br /> Board. <br /> This report has been prepared in response to the request to conduct a sensitive receptor survey <br /> within a 2,000-foot radius of the site. <br /> f <br /> 49014.1/5T04R1525 November 18,2004 <br /> Copyright 2004 Kleinfelder,Inc. Page I of 5 <br /> KLEINFELDER 3077 Fite Circle, Sacramento, CA 95827-1615 (916) 366-1701 (916) 366-7013 fay: <br />