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ENVIRONMENTAL HEALTH DEPARTMENT <br /> PpU'" SAN JOAQUIN COUNTY <br /> �v,�_�• co Unit Supervisors <br /> " Donna K Heran,R.E H S Carl Borgman,R E H S <br /> 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 /> • �Q .� Program Manager Telephone (209) 468-3420 Margaret Lagorio,R E H S <br /> Z i F 6 VR% Laurie A Cotulla,R E H S <br /> Fax (249) 464-01 38 Robert McClellon,R E H S <br /> Program Manager Mark Barcellos,R E H S <br /> KEN HILLIARD <br /> 7-ELEVEN INC <br /> PO BOX 711 AUG 2 2 2003 <br /> DALLAS TX 75221-0711 <br /> RE 7-Eleven Store#32262 Site Code #1505 <br /> 2360 West Grandine Road <br /> Tracy CA 95376 <br /> WORK PLAN_ Soil and Groundwater Assessment Work Plan <br /> August 12,2003 <br /> REPARED BX. SECOR International Incorporated <br /> APPROM� <br /> DI APPROVE11 <br /> A17L]�DUM NEEI�EIZ IJ �utiit bv. September 22,2003 <br /> AL)EOU AND NECESSARY p.T ZMENTS OF THE WORK PLAN EH&S 25299 37,subd(c)(3)] <br /> 1 Installation of five shallow groundwater monitoring wells,MW-1 thru.MW-5,for investigation of the lateral extent <br /> of the shallow contaminant plume The wells will be built to total depth of 17 feet below surface grade(bsg) <br /> 2 The boxings for the monitoring wells will be continuously cored from 5 to 17 feet bsg <br /> 3 Soil samples collected at 5-,10-,and 15 feet bsg will be submitted for laboratory analysis of listed constituents <br /> 4 A sensitive receptor/well survey will be conducted to identify all municipal,industrial,domestic,agnculhwal or <br /> other wells located within a 2000-foot radius of the site <br /> CCQMMEMM AND CONDMONS. <br /> 1 SJC/EHD directed the submittal of a work plan to investigate both the vertical and lateral extent of the <br /> contamination at this site The submitted work plan did not propose a vertical investigation Please submit an <br /> addendum to the work plan to address the issue of vertical defuution of the contamination _ <br /> 2 In addition to the laboratory analyses listed in the work plan,all samples must be analyzed for 1,2-dichloroethane <br /> and ethylene dibromide <br /> J <br /> 10010 ou <br /> b, of 1, 10G <br /> Lon Duncan,Senior REHS Nuel C Henderson,Jr,RG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc James Barton,CVRWQCB �,U 3 2 2443 <br /> Jaff Auchterlonte,SECOR <br /> �-M <br />