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UST Closure Report ABF Freight System,Inc Manteca,California Page 1 . 1.0 INTRODUCTION This report presents the results of the underground storage tank (UST) removal project conducted at the ABF Freight System, Inc facility at 2427 West Yosemite Avenue, Manteca, California The work was conducted on behalf of ABF Freight Systems,Inc of Fort Smith, Arkansas The contract, dated January 16, 1998, entailed the removal and disposal of a 10,000-gallon diesel fuel tank and associated piping Modification # 1, dated March 19, 1998, modified the contract to include removal and disposal of existing diesel fuel, purging and sampling of groundwater, and upgrading of the surface finish to concrete Modification # 2, dated March 20, 1998, modified the contract to include transport, disposal and replacement of contaminated soil removed during the tank removal Modification # 3, dated April 8, 1998, modified the contract to include a subsurface investigation of the property 1.1 Purpose and Scope The primary objective of the protect was to remove a 10,000-gallon diesel fuel UST and associated piping Soil and groundwater samples were collected and analyzed during removal activities to satisfy UST closure requirements of the County of San Joaquin Public Health Services, Environmental Health Division The scope of work included the following tasks • • Obtaining state,regional, and local regulatory agency permits, • Preparing and submitting a work plan for approval to the appropriate regulatory agencies, Locating underground utilities near the excavation area, • Removing the 10,000-gallon UST and associated piping, • Disposing of the 10,000-gallon UST at a certified hazardous waste facility • Sampling to determine impacts to the soil and groundwater, and • Site restoration 1.2 Report Organization The remainder of this report is orgatuzed into the following sections • Site description and background, • Field activities, • Sampling and analytical program, • Results of chenmcal analyses, • Materials handling and disposal, • Site restoration, and • Conclusions and recommendations All figures appear in Appendix 1 Photographs of the UST removal are presented in Appendix 2 A copy of all analytical data is presented in Appendix 3, while all chain of custody documentation Is presented in Appendix 4. The UST waste manifest and certificate of disposal x1SERVERIIC-ARIVEIPROJECTS132721P1ans and Rcports\UST Closure Report doc May 21,1998