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PUBLIC HEALTH "ERVICES <br /> SAN JOAQUIN COUNT <br /> ENVIRONMENTAL HEALTH D SION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 952 <br /> 209/468-3420 f ILE COPY <br /> NORMAN HIGGINS NOV 2 0 9995 <br /> PO BOX 369 <br /> CLEMENTS CA 95227 <br /> RE: Vogue Cleaners SITE CODE: 231032 <br /> 2315 N. California St. <br /> Stockton, CA., 95204 <br /> San Joaquin County Public Health Services Environmental Health Division <br /> (PHS-EHD) has reviewed the revised "Report of Findings for Phase 2 Site <br /> Investigation" dated October 21, 1998 as submitted by Foothill Engineering on <br /> October 23, 1998 for the above referenced sit and has the following comments. <br /> Missing from the report are maps of the sites owing subsurface petroleum <br /> contours (iso-concentrations lines) in the groundwater and soil at various depths. <br /> Also missing are soil cross sections showing t e different lithologies and possible <br /> preferential pathways the contamination may have traveled. The boring logs for <br /> the wells were not included either. These items are required and are to be <br /> submitted to PHS-EHD in a report addendum due immediately. <br /> Your consultant has concluded that the shallON groundwater beneath this site <br /> flows to the east. This places MW-3S (shallow) and MW-3D (deep) in the most <br /> down-gradient position. Low levels of soil co amination were detected at 45 <br /> and 50 feet below ground surface (`bgs) and tie groundwater sample from MW- <br /> 3S detected elevated levels of petroleum hyd ocarbons also. The contamination <br /> in the soil and in the groundwater cannot be considered delineated and further <br /> investigation is required. A work plan that ac dresses this requirement is to <br /> be submitted to PHS-EHD after two quarters of groundwater monitoring <br /> sampling events (by July 15, 1999). <br /> Quarterly groundwater sampling events are to continue for this site. Please <br /> analyze all groundwater samples for Total Petroleum Hydrocarbons (TPH) as <br /> Gasoline (G), Diesel (D), and Stoddard Solvent (SS), Benzene, Toluene, Ethyl- <br /> Benzene, Xylene (BTEX), and Halogenated Hydrocarbons (HHC) and report all <br /> groundwater sample data in "ug/I" (ppb). The detection limit for TPH (G, D, & SS) <br /> groundwater samples is 50.0 ug/l. The detection limit for BTEX and HHC in <br /> groundwater samples is 0.5 ug/l. <br /> A Division of San Joaquin County. ealth Care Services <br />