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• <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.xeran,R.E.H.S. Carl Bergman,R.E.H.S. <br /> N1I { Director 304 East Weber Avenue, Third Floor Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • �.. — P.. Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> 6.RRobert McClellon,R.E.H.S. <br /> Laurie A.Cotulla,R.E.xs. Fax: (209) 464-0138 <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> 7—ELEVEN INC <br /> KEN HILLIARD <br /> PO BOX 711 <br /> DALLAS TX 75221-0711 QZ� <br /> RE: 7-Eleven Store #14117 Site Code:1073 <br /> 2725 Country Club Blvd. RO#:0000013 <br /> Stockton, CA., 95204 CUF#: 015013 <br /> WORK PLAN: "Work Plan for Additional Site Assessment." <br /> DATED: July 27, 2004 <br /> PREPARED BY: Secor International Inc. — Dan Davis;R.G. <br /> STATUS: APPROVED, with conditions noted below. <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN fH&S <br /> 25296.10(c (2311_ <br /> • Continue lateral and vertical extent investigation by installing on and <br /> offsite push-point soil borings (GP-1 thru GP-3), on and offsite CPTs <br /> (CPT-1 thru 3), and two offsite monitoring wells (MW-9 & MW-10) and, <br /> • Collect soil and ground water-samples from the Geoprobe, CPT and <br /> monitoring well installations and analyze the soil samples for TPH-g, <br /> BTEX, MtBE by 8260B. Ground water grab samples to also include <br /> the fuel oxygenates (TBA, DIPE, ETBE, TAME) ands <br /> • Submit report of findings to EHD. <br /> COMMENTS AND CONDITIONS: <br /> TBA has been detected in soil samples close to the original UST pit <br /> as noted in "GP-14-10", "GP-17-15", and "S13-1". Proposed borings <br /> "CPT-1", "MW-9", and "GP-1" are closest to this area and would help <br /> investigate the lateral extent. These borings are to have TBA soil <br /> analysis added. If TBA is detected in these soil samples, further <br /> lateral and vertical investigation will be required to delineate the <br /> extent of TBA and, <br />