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PUBLIC HtALTHSERVIC-ESC <br /> SAN JOAQUIN COUNTY <br /> Q: .a <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> C4�iFp'R�`P <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 2091468-3420 <br /> ALBERT E & C NAVARRA OCT 18 2000 <br /> 2465 W VERNALIS RD <br /> TRACY CA 95376 <br /> RE: CALIFORNIA HIGHWAY PATROL Site Code: 1904 <br /> 385 W GRANTLINE RD <br /> TRACY CA 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has reviewed the Letter Report for Environmental Services dated September 14, 2000 <br /> prepared by URS Greiner Woodward & Clyde for the above referenced site. <br /> Groundwater samples collected at the site evidence contamination. Further investigation <br /> of groundwater at this site is necessary to determine the lateral and vert al extent of <br /> contamination. <br /> Total petroleum hydrocarbons as gasoline (TPHg), total petroleum hydrocarbons as <br /> diesel (TPHd), benzene, toluene, ethylbenzene, and xylenes (BTEX), andAygenates <br /> methyl-teirt butyl ether and tertiary amyl methyl ether were evidenced its groundwater in <br /> concentrations as high as 2,000 parts per billion (ppb), 20 ppb, 8.2 ppb,`275 ppb, 660 <br /> ppb, and 2.9 ppb respectively. The potential for groundwater contaminant-migration <br /> from this site is significant. The lateral and vertical extent of groundwater contamination <br /> must be determined. <br /> A complete well survey of domestic, municipal, agricultural, industrial and any other <br /> wells must be conducted within a 2,000 foot radius of this site. Contact the Department <br /> of Water Resources, municipal water suppliers, and any nearby industries for well <br /> information. PHS/EHD well permit records should be researched to identify any wells. <br /> Identify all sources of information in the well survey report. Clearly depict each well <br /> location as it relates to the above referenced site and submit any known construction <br /> details of the wells. <br /> In addition to the literature search described above, a ground-truth physical survey for <br /> wells within a 2,000-foot radius of the site must also be conducted. The location of wells <br /> identified in the physical search must be provided to PHS/EHD, as well as any known <br /> well construction details. All sources of information utilized in the physical well survey <br /> must also be provided to PHS/EHD. <br /> A Division of San Joaquin County Health Care Services <br />