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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY Un it Supervisors <br /> Carl Bor an,R.E.H.S. <br /> Donna K.Director <br /> R.E.H.S. <br /> Director 304 East Weber Avenue, Third Floor Borg <br /> man, <br /> Mike Huggins,R.E.H.S.,R.D.I. <br /> At Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • �.:, Program bfmmger Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> a�I Foac+ Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. <br /> EDWARD RALSTON FILE COPY <br /> CONOCOPHILLIPS <br /> 76 BROADWAY D <br /> SACRAMENTO CA 95812 FE <br /> RE: Circle K Store #1205 SITE CODE: 507198 <br /> 16470 Cambridge St. RO#:0000138 <br /> Lathrop, CA., 95330 <br /> WORK PLAN: "Well Installation and Vertical Assessment" <br /> DATED: September 7, 2004 <br /> PREPARED BY: Secor— Rusty Benkosky, P.E. <br /> STATUS: APPROVED (with conditions noted below) <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S <br /> 25296.10, subd(c)(3)1: <br /> • Install two (2), dual-hole, direct push soil borings offsite to <br /> approximately 70' bgs to determine the vertical extent of the MtBE <br /> groundwater petroleum plume and, <br /> • Install three (3) shallow, 2-inch PVC groundwater monitoring wells <br /> offsite in areas of concern as determined by Geoprobe phase and, <br /> • Analyze push-point soil (at least three per hole) and groundwater <br /> samples for TPH as gasoline, BTEX, 1,2-DCA, EDB, Ethanol, MtBE and <br /> other Oxygenates by 8260B and lead by 6010 and, <br /> • Submit report of findings to SJCEHD in the format of a Site Conceptual <br /> Model (SCM). <br /> COMMENTS AND CONDITIONS: <br /> Submit copies of City of Lathrop encroachment permits and SJCEHD <br /> well installation permit applications and fees in a timely manner. <br /> REASONS FOR DISAPPROVAL OF THE WORK PLAN [H&S 25296.10, <br /> subd(c)(3)1: <br /> none (/ <br /> DATED: September 27, 2004.BY: �`r� <br /> Michael Infurna, Senio EHS (209) 468-3454 <br /> [X ) Faxed to consultant on: 9-27-2004 <br /> c: Amarjit Singh Hardev Kinda ETAL, 27000 S. Leeward Way, Tracy. 95304 <br />