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0 • <br /> Work Plan For Remedial Approach and Well Installation 8 <br /> Rancb Market Site 23569 South Santa Fe Road Riverbank,California May 2,2002 <br /> mass will be compared to the estimated mass of hydrocarbons in soil and groundwater prior to <br /> remediation and groundwater concentrations will be compared to groundwater cleanup goals to <br /> evaluate the progress toward remediation of the Site. The monitoring and sampling results will <br /> be summarized into the quarterly report that will include the field notes, copies of the analytical <br /> lab results, tables summarizing the field and analytical data, and maps showing the groundwater <br /> gradient and chemical concentration results. <br /> REMEDIATION WELL INSTALLATION <br /> The proposed scope of work is being completed in preparation for installation of a remediation <br /> system designed to remove and/or destroy hydrocarbons in the soil and groundwater at the site. <br /> Specifically, the work scope includes the installation of a total of 27 wells: <br /> • Four(4) vapor extraction wells (Shown as V-7 through V-10 on Figure 3 of 8, <br /> Attachment 1); and <br /> • Twenty-three (23) ozone injection wells (Shown as S-1 through S-23 on Figure 3 of 8, <br /> Attachment 1). <br /> In addition to the well installation, trenching will be needed to extend the lateral extraction lines <br /> from the compound to the remediation wells. The locations of the proposed wells are shown on <br /> Figure 3 of 8, Attachment 1. A detailed description of the scope of work is summarized below. <br /> Scope of Work <br /> Site Specific Health and Safety Plan and Utility Clearance <br /> SECOR will prepare a site-specific Health and Safety Plan for well installation and sampling <br /> activities proposed at the site as required by the Occupational Health and Safety Administration <br /> (OSHA) Standard "Hazardous Waste Operations and Emergency Response" guidelines (29 <br /> CFR 1910.120). The document will be reviewed and signed by all SECOR personnel and <br /> subcontractors performing work at the site. <br /> Prior to conducting subsurface work at the site, Underground Service Alert(USA) will be <br /> contacted to delineate subsurface piping near the site with surface markings. In addition, a <br /> private utility locator service will be contracted to clear each of the proposed drilling locations. <br /> FJe: hMenet-Riverbevk\Wo6plmsV2erch menet-Re Symm <br />