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San Joaquin County DIRECTOR <br /> Q N Donna Heran, REHS <br /> UI <br /> p.? '"' N Environmental Health Department ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla, REHS <br /> r; 2 <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Carl Borgman,REHS <br /> i Mike Huggins, REHS,RDI <br /> Website: www.sjgov.org/ehd Margaret Lagorio,REHS <br /> �iFOR Phone: (209) 468-3420 Robert McClellon,REHS <br /> Fax: (209) 464-0138 Jeff Carruesco,REHS, RDI <br /> Kasey Foley,REHS <br /> Sergio Morescalchi JUN 13 2008 Albert Scannavino <br /> Atlantic Richfield Company Scannavino Properties <br /> PO Box 1257 5463 Cherokee Lane <br /> San Ramon, CA 94583 Stockton, CA 95215 <br /> Subject: ARCO Station #595 Site Code: 0707 <br /> 6100 North Highway 99 <br /> Stockton, CA 95212 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed Work Plan for <br /> Well Installation (Work Plan) dated May 29, 2008, submitted on your behalf by Secor <br /> International Incorporated (SECOR) and has the following comments. <br /> The submitted Work Plan proposes the replacement of some of the groundwater monitoring <br /> wells destroyed in 2005, and destruction of monitoring well MW-1, which was built with an <br /> excessively long screen length and is currently dry. <br /> In early 2005 the active investigation of this site was postponed to allow for an extensive <br /> road construction project to proceed. At that time an approved work plan for additional site <br /> assessment, dated May 6, 2004, had been approved by for implementation by the EHD. The <br /> May 29, 2008 Work Plan did not incorporate the proposals made by SECOR in the May 2004 <br /> work plan. Please proceed with submittal of a Work Plan addendum that includes the <br /> following additional investigative work: <br /> 1. Replacement of groundwater monitoring well MW-1. <br /> 2. Installation of additional deep groundwater monitoring wells as proposed in the <br /> May 2004 work plan. <br /> 3. Installation of a deeper groundwater monitoring well as proposed in the May 2004 <br /> work plan. <br /> The Work Plan Addendum is due for submittal to the EHD no later than July 18, 2008. If you <br /> have any questions please call Lori Duncan at (209) 468-0337. <br /> Sincerely, <br /> Lori Duncan, REHS Nuel Henderson, PG <br /> Senior Registered Environmental Health Specialist Professional Geologist <br /> c: James Barton, CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova, CA 95670 <br /> Rusty Benkosky, SECOR, 3017 Kilgore Road #100, Rancho Cordova, CA 95670 <br />