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GROUND ZERO ANALYSIS, INC, <br /> 1714 Main,Street <br /> Escalon,California 95320-1927 <br /> Telephone: (209)838-9888 J9 <br /> Facsimile: (209)838_9883 <br /> SAN JOAQUIN COUNTY PUBLIC HEALTH <br /> ENVIRONMENTAL HEALTH DIVISION <br /> February 15, 2000 304 E WEBER AVE 3RD FL <br /> STOCK ON CA 95202 <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Mr. Harlin Knoll 304 E. Weber Ave. Third Floor <br /> Box 38,San Joaquin County Public Health Services P O Appro8edJN CA 95201-0388 <br /> Environmental Health Division Denied El <br /> 304 East Weber Avenue, Third Floor Conditions C' U4W1A— <br /> Stockton, CA 95202 <br /> Date 1(' 00 by <br /> Subject: Workplan Addendum for Interim Soil and Groundwater Corrective Action <br /> Former Sunnyside Produce <br /> 896.0,W. Walnut Grove Road, Thornton, CA <br /> Dear Mr. Knoll: <br /> Ground Zero Analysis, Inc. (Ground Zero) submits this report on behalf of <br /> W. Mike Manner to <br /> present a workplan for interim remediation of contaminated soil and groundwa <br /> The location of the site is shown on Figure 1. ter at the subject site. <br /> 1.0 INTRODUCTION <br /> 1.1 Purpose <br /> The purpose of the proposed work is to minimize the threat to groundwater posed by contaminated <br /> soil resulting from leaking underground storage tanks and to reduce the volume of affected <br /> groundwater. <br /> 2.0 BACKGROUND INFORMATION <br /> 2.1 Initial Investigation and UST Removal <br /> The site formerly operated as a convenience store and retail gasoline station. A limited <br /> subsurface assessment was conducted by Ground Zero in December 1996. Results of the <br /> assessment provided evidence that petroleum hydrocarbon impact to the soil and groundwater <br /> 11GZA_FS"Y"Data1GROUNDZEIMANSER1Nianser 2linterirnrcp.doc <br />