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PUBLIC HL'ALTH SER ICES aPQ ,N <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> PAULINE MARQUAND <br /> C/O SHAWN KELLEY M & M BUILDERS SUPPLY f <br /> P O BOX 1107 <br /> TRACY CA 95378-1107 I <br /> i <br /> l <br /> RE: M&M Builders Supply Site Code: >E 1530 <br /> 8111 W.Eleventh Street <br /> Tracy CA 95376 <br /> �t <br /> WORK PLAN: Proposal for Additional Site Groundwater Investigation,and Groundwater Monitoring Well Installation <br /> DATED: October 16,2000 :E <br /> PREPARED BY: Wright Environmental Services,Inc. '! <br /> t <br /> k <br /> APPROVED: rx]—WITH CONDITIONS.SEE BELOW jPp <br /> DISAPPROVED: E ]l <br /> AbDERDI� <br /> IIMEDED: <br /> ADEQUATE AND NECESSARY ELEMENIS OF'IT-IE WORK PLAN[H&S 25299.37,subd(c)(3)1: <br /> iL <br /> 1. Five geoprobe soil borings for investigation of the lateral extent of the shallow groundwater contaminant plume. <br /> 2. Installation of a minimum of three groundwater monitoring wells to first water. <br /> 3. Resampling of the onsite domestic well. 1! <br /> 4. Sample analyses will include TPH diesel byEPA Method 3510/8015,TPI-%and BTEX byEPA Method 8020,fuel <br /> oxygenates, 1,2-dichloroethane and ethylene dibromide byEPA Method 8260. <br /> 5. Prior to installation of the monitoring wells,a scaled map showing the proposed locations of the wells will be <br /> submitted to PHS/EHD for review. <br /> i <br /> COMMENTS AND CONDITIONS:. <br /> 1. Provide to PHS/EHD,in writing and prior to submittal of a well permit application,a description of how vertical <br /> assessment of the onsite source area groundwater contaminant plume will be defined. Prior site work has defined <br /> the plume to 26 feet below surface grade. i1 <br /> 2. Monitoring wells must be installed within one month following receipt of the data from the grab groundwater l <br /> samples,which will be run on a normal tum around time. I <br /> 3. Submit to PHS/EHD a San Joaquin County Well Permit Application and r1equired$89.00 permit fee. <br /> 4. Forty,eight hours notice to PHS/EHD is required prior to initiating fieldwork FILE COPI C <br /> I <br /> ill <br /> DATED 3 1c,G BY C4 C\�� t <br /> �i <br /> Lori Duncan,Senior RENS (209)468-0337 <br /> ip <br /> cc: Marty Hartzell,CVRWQCB .j <br /> John Lynch,Wright Environmental ip <br /> t <br /> A Division of San Joaquin County Health Care Services i <br /> f 1I! <br /> :v <br />