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ENVIRONMENTAL HEALTH DEPARTMENT <br /> AQuiN <br /> �oG SAN JOAQUIN COUNTY <br /> Q•, �� ;;?i. ?, Donna K. Herau, R.E.H.S. � Program Coordinators <br /> Director 304 East Weber AveLe,Third Floor Carl $orgman, R.E.H.S. <br /> Laurie A. Cotulla, R.E.H.S. Stockton,California 95202-2708 Mike Huggins, R.E.H.S., R.D.I. <br /> Assistant Director I Margaret Lagorio, R.E.H.S. <br /> c,Fp= a Telephone: (209)468-3420 <br /> Robert McClellon, R.E.H.S. <br /> Fax: (209)464-0138 .teff carruesco, RF-.H.S. <br /> Website:www.sjgov.org/ehd/ Kasey Foley, R.E.H.S. <br /> JAN 14 2007 <br /> DON PRATT KITTY WALKER <br /> ATLANTIC RICHFIELD COMPANY COS REDEVELOPMENT AGENCY <br /> PO BOX 1257 304 N EL DORADO STREET <br /> SAN RAMON CA 94583 STOCKTON CA 95202 <br /> I <br /> RE: Former ARCO Station #4493 SITE CODE: 1042 <br /> 205 Center Street <br /> Stockton CA 95202 <br /> San Joaquin County Environmental Health Department (SJC/EHD) has received the <br /> Revised Site Closure Report dated October 31, 2006 submitted on your behalf by Secor <br /> International Incorporated (SECOR). <br /> SJCIEHD has discussed the request to close this contaminated underground storage <br /> tank with representatives of the Regional Water Quality Control Board, Central Valley <br /> Region (RWQCB) and they have indicated they do not consider this site a candidate for <br /> closure due to the fluctuating and increasing concentrations of petroleum hydrocarbon <br /> contaminants in the groundwater samples collected at the source area in wells MW-4, <br /> MW-8M and MW-8D. <br /> SJCIEHD recommends consideration of implementing interim remediation of periodic <br /> batch extraction of groundwater from these wells with contaminant concentrations of <br /> concern to the RWQCB. <br /> If you have any questions please call Lori Duncan at (209} 468-0337. <br /> Donna Heran, RENS, Director <br /> Environmental Health Department <br /> (.U�.•` +tea,.�.- ���� �%yt�' <br /> Lori Duncan, Senior REHS Nuel C. Henderson, Jr., PG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: James Barton, PG, CVRWQCB <br /> Rusty Benkosky, PE, SECOR <br /> I <br />