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a �ii�isior2 <br /> gal'Aml� <br /> EN1r)t04NE%Vb5P1T0 1111 rd Floor j �j� Ic®rl <br /> O Box 383, Stockton CA 95201-0388 <br /> Approved , &' 1 <br /> Denied El <br /> Conditions <br /> Date-S'-7- by_. Q, j,3 yyn May 5, 1999 <br /> Project 20805-147 007 <br /> 10 <br /> Ms Carol Oz <br /> z" San Joaquin Public Health Services \ <br /> Environmental Health Division <br /> PO Box 388 <br /> Stocktcn, California 95201-03SS <br />'Ae � e Additional Addendum to Soil Overexcavation and Soil Sampling Workplan <br /> Associated with Product Delivery Line and Dispenser Replacement, ARCO Service <br /> P �� Station 2186, 3212 North California Street, Stockton, California <br /> Dear Ms Oz <br /> On behalf of ARCO Products Company (ARCO), Pinnacle Environmental Solutions, a <br /> division of EMCON (Pinnacle), has prepared this additional addendum to the February <br /> p,-I 19, 1999 Overexcavation and Soil Sampling Workplan for the above referenced site <br /> �'7 This Additional Addendum to the Workplan is due to the decision by ARCO to replace <br /> the underground storage tanks (USTs) at the site in addition to the original scope of work <br /> (replacing the dispensers and product delivery lines( <br /> .1y Jy The anticipated volume of material to be removed from beneath the piping <br /> trenches and the USTs is approximately 500 cubic yards This volume is typical <br /> �p u ` for recent piping, dispenser and UST replacement activities at other ARCO <br /> facilities <br /> Tile cxc ovated soli will be character,zed for d,sposal and file arab tical r_-Silas <br /> will be evaluated to determine the appropriate, ARCO-approved, disposal <br /> tacillty In the event that total petroleum hydrocarbons as gasoline (TPHG) are <br /> less than 100 parts per million (ppm), the disposal facility may be either <br /> Redwood Landfill or BFI Vasco Road Landfill In the event that TPHG <br /> concentrations exceed 100 ppm, the soil will be transported to TPS located in <br /> Richmond, California Dillard Trucking, the ARCO transportation contractor, <br /> will submit profiling and disposal applications to the appropriate tactility and <br /> transport the soil for disposal <br /> CP T\ARC0121WREP0RTS\2186P104 DOC-9811sg 1 <br /> 3939 Cambridge Road Suite 220 Cameron Park,California 95682 (530)676 6884 (530)676-6885 Fax <br />