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Final Remediation Plan Page I Ranch Market 23569 South Santa Fe Road Riverbank CA February 28 2001 1.0 INTRODUCTION This Final Remediation Report (FRP) is submitted by SECOR International Incorporated (SECOR) for the Ranch Market Site located at 23569 South Santa Fe Road, Riverbank, California (the Site, Figures 1 and 2) This FRP was prepared in response to the California Regional Water Quality Control Board-Central Valley Region (RWQCB) letter dated January 2, 2001 This FRP incorporates the requirements of Appendix A of the Tri-Regional Recommendations for Preliminary Investigation Evaluation of Underground Storage Tank Sites and includes • A summary of current and past Site use • A summary of environmental investigations and results • A summary of the domestic wells on and adjacent to the Site • A summary of current Site conditions • A summary of the soil vapor extraction and air sparge feasibility test • A review of remedial approaches for the removal and/or insitu destruction of gasoline adsorbed to soil and dissolved in groundwater at the Site • A cost comparison of the remedial approaches • A conceptual design of the recommended remedial alternative 2.0 SITE HISTORY 2.1 Site Description Ranch Market is located on the west side of the road at 23569 South Santa Fe Road, Riverbank, California Currently the Site is being operated as a small convenience store The single story structure on the site is used as a convenience store and home for the store manager The Site is located approximately 1,200 feet north of the Stanislaus River in San Joaquin County (Figure 1) The property is bounded on the north and east by Santa Fe Road and an almond orchard, to the west by undeveloped fields that extend to a Santa Fe Railroad track, and to the south by three residences shown on Figure 2 The Site and adjacent properties are flat lying and have an elevation of approximately 105 feet above mean sea level 2.2 References The following documents were reviewed and used to prepare this FRP o UST Removal Field Notes, May 20, 1991 (San Joaquin County PHS), o Phase 11 Environmental Site Investigation, November 28, 1999 (Arrowhead Consultants), o Quarterly Monitoring Report, January 24, 2000 (Arrowhead Consultants), o Work Plan far Soil and Groundwater Assessment, March 30, 2000(SECOR), o Work Plan For Domestic Well Video Logging, April 20, 2000(SECOR), o Revised Work Plan for Soil and Groundwater Assessment, Apnl 25, 2000 (SECOR), o Work Plan for Well Installation and Feasibility Testing, March 30, 2000 (SECOR), o Quarterly Monitoring and Sampling Report(Q2/2000),May 1, 2000 (SECOR), File FRP report doc SECOR International Incorporated