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• • <br /> San Joaquin County DIRECTOR <br /> Donna Heran, REHS <br /> °LAIN Environmental Health Department <br /> ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla,REHS <br /> N (t�lp'g Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Carl Borgman, REHS <br /> �. Mike Huggins, REHS, RDI <br /> /s. <br /> Website: wwwsjgov.org/ehd Margaret Lagorio,REHS <br /> <r FORS Phone: (209)468-3420 Robert McClellon, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco,REHS, RDI <br /> Kasey Foley, REHS <br /> ATLANTIC RICHFIELD COMPANY SEP 0 7 2007 <br /> SERGIO MORESCALCHI <br /> PO BOX 1257 <br /> SAN RAMON CA 94583 <br /> RE: ARCO#4932 Site Code: 1136 <br /> 16 E. Harding Way RO#:0671 <br /> Stockton, CA 95204 <br /> WORKPLAN: Work Plan for Monitoring Well Installation <br /> DATED: July 31, 2007 <br /> PREPARED BY: Secor - Rusty Benkosky, P.E. <br /> STATUS: APPROVED with conditions noted below. <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN [Health & Safety Code (H&S) <br /> Section 25296.10(c)(3)l: <br /> • Install seven (7) B' zone, 2-inch PVC monitoring wells ("DMW-4" thru "DMW-10") <br /> on and offsite as required by the EHD. <br /> • Continuous core soil sample collection and selected soil sample laboratory <br /> analyses for GRO (C6-C12), BTEX, six Fuel Oxygenates, 1,2-DCA and EDB by <br /> 82606. <br /> • Develop, survey in, and add monitoring wells to quarterly monitoring protocol. <br /> • Submit report of findings to the EHD. <br /> COMMENTS AND CONDITIONS: <br /> • Ensure that an adequate number of soil samples are analyzed from the B' zone to <br /> support conclusions of plume delineation, source, migration, and mass balance <br /> calculations that are required by the EHD to be in the report of findings for this <br /> phase. <br /> • The report of findings is to be in the format of a Site Conceptual Model. <br /> • Submit a Well Permit Application form and $89 fee for each of the areas (onsite <br /> work and the offsite City of Stockton right of way work). Copies of the City's <br /> encroachment and revocable permits are to be submitted to the EHD with the <br /> permit application forms and fees. <br /> REASONS FOR DISAPPROVAL OF THE WORKPLAN [H&S Section 25296.10(c)(3)1: <br /> • <br /> none <br /> �� <br /> BY <br /> Michael Infurna, REHS. (20 468-3454 <br /> cc: CVRWQCB—James L. Barton, Sacramento. <br /> SW RCB— CUF— Mark Owens, Sacramento. <br /> Secor—Brian Westhoff, 3017 Kilgore Rd#100, Rancho Cordova 95670 <br /> [X] electronically forward to consultant on: <br />