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FILE COPY <br /> r ENVIROT�WENTAL HEALTHIJEPARTMENT <br /> Pp U,f N SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K. Heran, R.E.H.S. P <br /> Director 304 East Weber Avenue,Third Floor Carl Sorgman,R.E.H.S. <br /> W. <br /> Laurie A. Colulla, R.E.H.S. Stockton, California 95202-2708 Mike Huggins, R.E.H.S., R.D.I. <br /> Program Manager Douglas W. Wilson, R.E.H.S. <br /> cQa;P Telephone: (209)468-3420 <br /> cr Fo e Margaret Lagorio,R,E.H.S. <br /> Fax: (209) 464-0138 Robert McClellon, R.E.H.S. <br /> Website:www.sjgov.org/ehd/ Jeff Carruesco, R.E.H.S. <br /> QUIK STOP MARKETS / MIKE KARVELOT <br /> 4567 ENTERPRISE STREET <br /> FREMONT CA 95438 I't <br /> RE: Quik Stop Market #039 Site Code: 1111 <br /> 2285 E. Fremont St. RO#: 0000428 <br /> Stockton, CA. 95205 <br /> WORK PLAN: Letter Work Plan for Additional Ground water <br /> Investigation <br /> DATED: December 29, 2005 <br /> PREPARED BY: Horizon Environmental Inc. — Rexford K. Smith, RG. <br /> STATUS: APPROVED, with conditions noted below. <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN fH&S <br /> 25296.10, subd(c)(3)1: <br /> • install one onsite (MW-7) and one offsite monitoring well (MW-8) to <br /> define the 1,2-DCA impacted ground water plume as required by EHD <br /> and, <br /> • Submit report of findings to EHD. <br /> COMMENTS AND CONDITIONS: <br /> • The report of findings is to be in the format of a Site Conceptual <br /> Model (SCM) due at EHD within 60-days after these two monitoring <br /> wells are installed. The SCM shall include an evaluation of the <br /> nature and extent of the petroleum contaminant mass and <br /> recommendations and date for the next phase of work at this site. <br /> • Ensure an adequate number of soil samples are collected and <br /> analyzed to support conclusions that the extent of the soil mass is <br /> laterally and vertically delineated for the former UST constituents. <br /> Remedial action plans and requests for no further action approvals <br /> are based on an understanding of the nature and potential of the <br /> residual soil to continue to impact the ground water below the site. <br /> Conclusions that are not based on data collected in the field cannot <br /> be used for support for remedial action plans or no further action. <br /> Further investigation could be required by EHD. <br />