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,a <br /> ' i <br /> JAN-IS-'91 l,,fED 12:a2 VA; TECHNGLOG I E TEL NO:432 %'- #49@ P05 <br /> DRAFT SOIL REMEDIATION PLAN <br /> 909 WEST HAMMER LANE <br /> STOCKTON, CALIFORNIA <br /> INTRODUCTION <br /> This draft of the Soil Remediation Plan (SRP) regarding the subject site, <br /> a former Exxon rest stop located at 909 West Hammer Lane in Stockton, <br /> California, has been prepared to comply with San Joaquin County Public <br /> Health Services, Environmental Health Division requirements. <br /> BACKGROUND <br /> The subject site is a former Exxon rest stop located at the northwest <br /> corner of the intersection of West Hammer Lane and Lower Sacramento Road <br /> in Stockton, California, The service station structures have been <br /> demolished and the tanks and pipelines have been removed. The site is <br /> currently a vacant lot. The surface material at the site consists of <br /> bare soil and patches of asphalt. The approximate depth to groundwater <br /> is 48 to 58 feet. <br /> The results of a Remedial Investigation conducted at the site on 12 March <br /> 1990 by EVAX Technologies, Inc. (EVAX) indicate that hydrocarbon <br /> concentrations as vapor are located predominantly in the soil in the <br /> vicinity of the former tank cavity at depths greater than 28 feet below <br /> grade. The results of a Feasibility Study conducted the following day <br /> indicate that soil conditions at the site are amenable to use of vapor <br /> extraction technology for soil remediation. <br /> PURPOSE ANO SCOPE <br /> The objective of the SRP is to allow an informed decision regarding soil <br /> remediation alternatives by Public Health officials and to inform the <br /> Public of the remediation alternatives under consideration, The SRP <br /> includes a presentation of the data obtained during a remedial <br /> investigation/feasibility study conducted at the subject site; definition <br /> of soil remediation alternatives for the site; identification of the <br /> risks associated with conditions at the site, as well as risks associated <br /> with the soil remediation alternatives, the costs for implementation, <br /> operation, and maintenance of the soil remediation alternatives; and a <br /> detailed discussion of the recommended remediation alternative. <br />