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Ms, r <br /> PUBLIC AEALTH SERVICES aap �A <br /> SAN JOAQUIN COUNTY r. c <br /> •y <br /> ENVIRONMENTAL HEALTH DIVISION w. ' <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer ' <br /> Ct'�<i p o RSP <br /> 445 N. San Joaquin Street • P.O. Box 388 0 Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> RICHARD PREMZIC COPY <br /> WALLACE KUHL AND ASSOCIATES, INC. <br /> 3050 INDUSTRIAL DRIVE SPR ® 41994 <br /> WEST SACRAMENTO CA 95691 <br /> RE: CRYSTAL CREAMERY AND BUTTER CO. SITE: 2098 <br /> 404 W FREMONT ST <br /> STOCKTON CA 95203 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has reviewed the <br /> March 18, 1994 Problem Assessment Report Workplan and the Monitoring Well Permit Application for the <br /> above referenced site. <br /> The reporting limits for sample results reported as Non Detectable (ND) in groundwater for Benzene, <br /> Toluene, Ethyl Benzene and Xylenes (BTEX) shall be .3 ppb. The reporting limits for sample results reported <br /> as ND in groundwater for total petroleum hydrocarbons as gasoline (TPHg) shall be 50 ppb. <br /> The permit application indicates a grout seal depth of 20 feet. Groundwater was encountered at 18 feet in <br /> 1986 in MWl. PHS/EHD recommends perforations begin at 18 feet with 2fe t of sandpack and a 1 foot <br /> bentonite plug above the perforations the final grout will be 15 feet. <br /> The disposal plans for cuttings, development water and purge water are not present in the workplan. <br /> PHS/EHD requests an addendum to the existing workplan to address this issue. <br /> PHS/EHD staff reviewed the June 17, 1992 "Second Phase Subsurface Investigation Report" laboratory <br /> analysis of MW-2 on the Western Pacific Railroad (WPRR) site. At that time, the well was ND for BTEX, <br /> however, proposed additional sampling of this monitoring well may provide valuable data in evaluating the <br /> ground water characteristics beneath the Crystal site. <br /> Permit # 2587 has been issued for installation of 2 monitoring wells and a copy of the permit has been <br /> mailed to WESTEX. <br /> The requested information shall be submitted prior to installation of the wells. <br /> For further information please contact Steven Sasson, Senior R.E.H.S., at (209) 468-3459. <br /> Ernest M. Fujimoto, M.D., M.P.H. <br /> Acting Health Officer <br /> Diane M. Hinson, Supervising R.E.H.S. <br /> 1 Environmental Health Division <br /> DMH/SS:lb <br /> i <br /> A Division of San Joaquin County Health Care Services <br />