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FILE COPY <br /> PUBLIC H5ALTH SERVICES <br /> SAN JOAQUIN COUNTY ° <br /> v: <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 <br /> GEORGE AND MEI TERANISHI MAY U 5 2000 <br /> 1600 WEST DURHAM FERRY RD <br /> TRACY CA 95376 <br /> Re: George's Service Site Code: 1550 <br /> 1600 West Durham Ferry Rd. <br /> Tracy, CA 95376 <br /> San Joaquin County Public Health Services Environmental Health Division (PHSBHD) <br /> requested a Work Plan addressing components of the PHS/EHD letter dated September 8, <br /> 1999. The Work Plan was to have been submitted by October 25, 1999. PHS/EHD has <br /> not received this Work Plan. Submit a Work Plan to further evaluate the h dro eolo <br /> and compare remediation alternatives for contamination at this site by May 24 2000. <br /> Quarterly Monitoring(QM) of groundwater at this site, including the sampling of two on <br /> site drinking water wells was directed by PHS/EHD in the September 8, 1999 letter. <br /> PHS/EHD has not received a QM Report for this site since the August 12, 1999 QM <br /> Report prepared by Geological Technics Inc (GTI). OM Reports for the third and fourth <br /> quarter of 1999 and the first quarter of 2000 should be submitted to PHSIEHD by Ma <br /> 24, 2000. Future QM Reports should be submitted to PHSIEHD within 30 days of <br /> completing the sampling event. <br /> PHSIEHD received a letter from GTI dated September 13, 1999. The GTI letter stated <br /> that fate and transport modeling would be performed to determine the potential for off <br /> site migration of the contaminant plume and also that feasibility studies would be <br /> conducted to compare at least two different remediation alternatives for contamination at <br /> the site. GTI additionally recommended that a complete well survey map showing the <br /> locations of welts within 250 feet of the site be provided to PHS/EHD. PHSIEHD is not <br /> requiring the wells be surveyed, only that they be plotted (shown to exist) on a scaled <br /> map. All wells identified within 2,000 radial feet of this site are to be plotted on the <br /> map. This work has not been done and PHSIEHD has not received the well survey <br /> information. Provide these components as part of the Work Plan. <br /> If the water from the two on-site domestic wells is confirmed to be non-detectable for <br /> petroleum contamination, quarterly sampling of them can be discontinued. If well 1600A <br /> is not in operation or evidences contamination, the well must be destroyed under <br /> PHSIEHD permit. If well 1600A is operating,pump draw-down tests should be <br /> performed on the well to determine its pumping influence as part of the fate and transport <br /> modeling activity. PHSIEHD recommends the destruction of this well in any case to <br /> A Division of San Joaquin County Health Care Services <br />