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i <br /> PUBLIC H <br /> i�ALTH SERVIC"S o:P UaN;.C, <br /> SAN JOAQUIN COUNTY �G <br /> z <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D. M.P.H., Health Officer z` <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> APR 0 3 2000 <br /> RAMONA BOOZE <br /> TED PETERS TRUCKING <br /> PO BOX 831 <br /> MANTECA CA 95336 <br /> RE: TED PETERS TRUCKING CO,INC SITE CODE: 1427 <br /> 1985 YOSEMITE <br /> MANTECA CA 95336 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has reviewed <br /> Report Groundwater Monitoring Fall Quarter 1999 dated January 31, 2000 and Report Soil&Groundwater <br /> Investigation dated November 3, 1999 prepared by Geological Technics Inc. for the above referenced <br /> underground storage tank site. Analytical results of the groundwater samples from Monitoring Well#1 <br /> (MW-1) collected on November 24, 1999 were 1.5 parts peri billion (ppb) of Ethyl Benzene, and non- <br /> detect at below detection limits for Benzene,Toluene,Xylenes,Total Petroleum Hydrocarbons as <br /> gasoline (TPH-G); 1,2 Dibromoethane, 1,2 DicholoroethanIe and all five oxygenates. Analytical results <br /> of MW-2 and MW-3 were non-detect at below detection limits for all analytes. Analytical resutls of <br /> MW-2 groundwater sample collected on July 26, 1999 were 2.0 ppb of Ethyl Benzene, 22 ppb of Total <br /> Xylenes, 390 ppb of TPH-G, and non-detect for all other analyses. Analytical results of the soil sample <br /> collected from MW-2 at 5.5 to 6 feet below surface grade (bLg) were 120 ppb of Ethyl-Benzene, 560 ppb <br /> of Total Xylenes, 14 parts per million (ppm) of TPH-G, anU non-detect for all other analytes. <br /> PHS/EHD agrees with the Groundwater Monitoring Report recommendation that one more quarterly <br /> monitoring event should be performed. In a telephone conversation on March 31, 2000, Del Tech <br /> informed this office that this quarterly monitoring event his not been performed. PHS/EHD <br /> recommends performing a groundwater monitoring event in April 2000. <br /> A 2000 foot radius receptor/well survey should be performed in accordance to Appendix B of the Tri <br /> Regional Board Staff Recommendations for closure. Add4sses of all wells identified in the survey and <br /> their location on a map along with any known construction details of the wells should be provided to <br /> PHS/EHD. <br /> l <br /> Pursuant to Section 25297.15(a) of the Health and Safety Code,you must provide PHS/EHD <br /> certification in writing of your notification to all record fe�title owners and a complete mailing list of <br /> all record fee title owners prior to our considering any cleanup or closure proposals for the site. <br /> Donna Heran,REHS,Director <br /> ntal Health Division <br /> Environmental <br /> Jeffrey Wong, REHS Margaret Lagorio,REHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> c: Del-Tech Geotechnical Support Services-Don Li ht <br /> ' c: RWQCB, Central Valley Region-Marty Hartzell <br /> c: Ray Kablanow- Geological Technics,Inc. <br /> w <br /> A Division of San Joaquin County Health Care Services <br />