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San Joaquin County ` ' DIRECTOR <br /> pQu'N Environmental Health De Donna Heran,RENS <br /> '° Department p assrsra'1YTDIRECTOR <br /> 2::? a. •G <br /> 600 East Main Street Laurie Cotulla, RENS <br /> ' Stockton, California. 95202-3029 PROGRAM COORDINATORS <br /> „r. Carl Borgman, REHS <br /> cQrFOR �P Mike Huggins, REHS, RDI <br /> Website: www.sjgov.org/ehd Margaret Lagorio,REHS <br /> Phone: (209) 468-3420 Robert McClellon,REHS <br /> Fax: {209) 464-013$ Jeff Carruesco, REHS,RDI <br /> Kasey Foley, REHS <br /> DON PRATT VAY 0 3 2007 <br /> ARCO PRODUCTS COMPANY <br /> PO BOX 1257 <br /> SAN RAMON CA 945$3 <br /> RE: ARCO Station #6080 SITE CODE: 0712 <br /> 85 Louise Avenue <br /> Lathrop CA 95330 <br /> In.correspondence dated June 1, 2006 San Joaquin County Environmental Health <br /> Department (SJCIEHD) informed you that to continue their review for closure of the i <br /> above referenced contaminated underground storage tank site the Regional Water <br /> Quality Control Board, Central Valley Region (CVRWQCB) requested an assessment <br /> of the soil contamination remaining at the site for vapor emissions, direct exposure and <br /> gross Contamination. Concentrations of xylenes and total petroleum hydrocarbons as <br /> gasoline (TP,Hg) in the shallow soil near the dispenser islands at this site exceed the <br /> San Francisco Bay Regional Water Quality Control Boards Tier,I Environmental <br /> Screening Levels (ESL's) for evaluation of the risk posed from remaining soil and <br /> groundwater contamination. <br /> Please proceed with preparation of the assessment and submit it to SJCIEHD and the <br /> CVRWQCB no later than June 29,:2007. Include in the assessment a discussion of <br /> the expected,long-term use of the site, which addresses specifically that use of the F <br /> land will limit the risk from the residual contamination, i.e. ARCO expects the site to be <br /> an operating gas station for the foreseeable future. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> i�`� 1�Cvr l•� r <br /> Lori Duncan, Senior REHS Margare agori�, REHS <br /> LOP/Site,Mitigation Unit IV Program Coordinator Unit IV <br /> I <br /> cc: James Barton, CVRWQCB <br /> Rusty Benkosky, Secor International Inc. 1 <br /> i <br />