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PUBLIC Hh ALTH SERVIG 'S PQM N. <br /> ,o <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer. `P.. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 FILE Cur y <br /> DALE BOYETT <br /> BOYETT PETROLEUMM� 17 1999 <br /> P O BOX 1099 <br /> i <br /> SALIDA CA 95368 <br /> Re: BOYETT PETROLEUM Site Code: 1433 <br /> 419 S.MAIN ST. <br /> MANTECA CA 95336 <br /> i <br /> San Joaquin County Public Health Services,Environmental Health Division(PHS/EHD) has received <br /> and reviewed the"Work Plan for the Lateral and Vertical Extent of Contamination" dated March 18, <br /> 1999 prepared by WHF,Inc. (WHF) for the above referenced site. PHS/EHD has the following <br /> comments: <br /> • A survey that identifies all wells located within a 2000-foot radius of the site should be conducted <br /> before the commencement of any work on site. A report of'the survey should include a map' <br /> I <br /> g the location of all wells and any known wn construction details of the wells identified. The <br /> n <br /> I, <br /> well survey report should be submitted-to PHS/EHD by June 5, 1999. <br /> • An additional monitoring well (MW)should be installed in the dispenser area by Soil Boring#1 <br /> (SB-1) where the water sample with the'highest concentration of Methyl Tert-butyl Ether(MTBE) <br /> was collected. <br /> • Soil samples should also be collected at the capillary fringe and at each significantly different <br /> lithologic unit in addition to every interval of 5 feet. <br /> • An improper cement/bentonite mixture was used to grout the soil borings at the site on October 5, <br /> 1998. The sanitary seal of MWs proposed in this work plan shall be grouted according to the San <br /> Joaquin County Well Standards <br /> • PHS%EHD recommends using teflon sheets in place of aluminum foil for sealing the end of the <br /> brass-sleeve prior to placement of the plastic cap. <br /> Submit a work plan addendum that includes the above comments to PHS/EHD by June 15, 1999. <br /> Work must commence by July 5, 1999. <br /> If you have any questions, please contact Jeffrey Wong at (209)468-0335. <br /> I <br /> Donna Heran,RENS,Director <br /> Environmental Health Division <br /> Jeffrey Wong, REHS Mar <br /> bare La <br /> o <br /> rio RENS <br /> I <br /> LOP/Site Mitigation Unit N Supervisor <br /> C: RWQCB,Central Valley Region-Mark List <br /> C: WHF, Inc. -Bill Fox <br /> A Division of San Joaquin County Health Care Services <br />