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c <br /> WALLACE - KUHL SITE INVESTIGATION WORKPLAN <br /> b ASSOCIATES INC. CRYSTAL CREAM& BUTlrRR COMPANY <br /> 404 WEST FREMONT STREET <br /> Stockton, California 95203 <br /> WKA No 1628 07 <br /> June 5, 1996 <br /> INTRODUCTION <br /> We have prepared this workplan to further evaluate subsurface soil contamination, <br /> perform an air sparging/vapor extraction pilot test and prepare a Final Remediation <br /> Pian (FRP) at the above referenced site (Plate 1) <br /> Purpose and Proposed Scope of Work <br /> The purpose of our work will be to further investigate the vertical and lateral extent <br /> of petroleum hydrocarbon contamination in subsurface soil beneath the site, <br /> evaluate several remediation options for soil and groundwater cleanup and prepare <br /> a Final Remediation Plan The Final Remediation Plan will include evaluation of <br /> appropriate remediation methods and preliminary cost analysis of the most viable <br /> Geotechnical Engineering <br /> remedial alternatives <br /> Engineering Geology <br /> Our proposed scope of work will be to install one dual completion air <br /> Environmental Consulting <br /> sparging/vapor extraction well and two dual completion air sparging/vapor <br /> Remediation Services extraction observation wells, collect and analyze soil, ground water and soil gas <br /> , <br /> v Construction Inspection samples and perform an air sparging/vapor extraction feasibility test at the above- <br /> referenced property The combined air sparging/vapor extraction feasibility test <br /> Materials Testing <br /> will be performed to estimate the effective radius of influence and feasibility of air <br /> sparging/vapor extraction as remediation alternatives The feasibility test will be <br /> composed of three parts soil vapor extraction, air sparging, and combined air <br /> 3050 Industrial Blvd sparging and vapor extraction Data from these tests will be used in preparing the <br /> West Sacramento <br /> y` CA 95691 <br /> R Fax 916 372 2565 <br /> 916 372 1434 <br /> Recycled paper <br />