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UST Removal Report and Request for Closim 1 The Southland 22EE2noM Store#17647,1049 Yosemite Ave Manteca,CA hnuary 12,1999 ' 10 INTRODUCTION This report is submitted by IT Corporation (IT) (formerly known as Fluor Daniel GTI, Inc)summarizing ' underground storage tank(UST) removal adrAbes conducted at Southland Store No 17647, 1048 W Yosemite Avenue, Manteca, California (Figures 1 and 2) The scope of work included 1)excavation, removal and offsite disposal of three USTs and associated product piping,2) collection and analysis of soil samples from the base and sidewalls of the UST excavation (Table 1),3) backfill and compaction of the UST excavation and, 4) preparation of this report summarizing the methods and results of the work performed The work was designed to fulfill the requirements of the San Joaquin County Public Health Services Department(SJCPHS) The sod sampling was conducted under the direction and observation of Mr Harlin Knoll of the SJCPHS Banks and Company(Banks)and/or its subcontractors conducted removal of the USTs, and ' backfill/compaction of the UST pd under direct contract to The Southland Corporation Field dotes are included in Appendix A Removal of the USTs and construction-related excavation activities has eliminated the majority of the ' sod hydrocarbon source Laboratory analytical data indicate residual soil hydrocarbon concentrations contain low to non-detectable aromatic(BTEX) constituents,which are confined to a relatively small area in the eastern part of the former UST pit,and are located in low-permeability soils The virtual absence of aromatics is indicative of intrinsic biodegradation,which is expected to continue Based on these data, it is proposed that the site be classified as low-nsk under State Water Resources Control Board (SWRCB)guidelines, and that remaining hydrocarbons be left In place to continue to intrinsically biodegrade No further action is requested upon SJCPHS receipt and review of this report 2.0 UNDERGROUND STORAGE TANK REMOVAL On December 4 , 1999,two 10,000-gaIIon single-wall steel USTs and one 6,000-gallon single wall steel UST were tnple-nnsed and removed from the site by Banks and Company(Banks) The tank rinse water was removed from the site by a licensed waste-hauling firm to an approved disposal facility The USTs were removed from the site for recycling to West Coast Equipment in Turlock,California (Appendix C) All waste removal was completed in accordance with SJCPHS requirements(Mr Harlin Knoll) Final disposal documentation will be forwarded to the SJCPHS when received from Banks 1 3.0 SOIL SAMPLING 3.1 Health and Safety Plan IT prepared a Health and Safety Plan as required by the Occupational Safety and Health Administration ' Standard Hazardous Waste Operations and Emergency Response guidelines(29 Code of Federal Regulations 1910 120) for the exclusive use of IT personnel during onsite achvibes ' I I E7647ustrptr(Sfiil II ! I II A