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PUBLIC HEALTH SERVI ES <br /> U I IV <br /> SAN JOAQUIN COUNTY <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 /> ERIC WEILBURG C <br /> FRANK L & JERRE MOORE ) <br /> P O BOX 8307 <br /> STOCKTON CA 95208 FEB 2 3 2000 <br /> Re: Moore Truck Lines Site Code: 1701 <br /> 3400 Newton Rd. <br /> Stockton CA 95205 <br /> San Joaquin County Public Health Services Environmental Health Division(PHS/EHD) <br /> has reviewed the Well Receptor Survey (WSR) dated November 15, 1999 and the <br /> Quarterly Monitoring Report (QMR) dated February 4, 2000 prepared by Advanced <br /> GeoEnvironmental, Inc., for the above referenced site. Further evaluation of the <br /> groundwater at this site will be necessary. <br /> Two domestic wells were identified at the site in the WSR. Water samples should be <br /> collected from both wells during the next quarterly sampling event and analyzed using <br /> EPA Method 524.2. The domestic well at the northeast corner of the property is <br /> currently utilized for potable water at the site. Provide PHS/EHD with information <br /> regarding the wells construction and the length of its screened interval. The domestic <br /> well located at the southeast corner of the maintenance building at the site is not in <br /> operation. This well is a potential conduit for contamination and should be properly <br /> destroyed under PHS/EHD permit and inspection. The WSR evidenced additional <br /> domestic wells on nearby properties. Provide PHS/EHD with a site map to scale showing <br /> the locations of all nearby wells and their corresponding addresses. Pending further site <br /> assessment activities and findings, it may be necessary to sample and analyze water from <br /> these wells for possible petroleum contamination. <br /> Two septic areas were identified in the WRS for the above referenced site. Please provide <br /> PHS/EHD with more specific information about these systems regarding construction, <br /> permits, and leach line and/or pit locations. <br /> Information contained in the QMR indicated that the groundwater gradient is to the east. <br /> Groundwater samples collected from borings constructed at this site on June 10 and 11, <br /> 1999 during preliminary investigation evidenced soil and groundwater contamination. <br /> Groundwater collected from Boring#5, constructed east of the contaminant source area <br /> evidenced MTBE at 9.9 parts per billion. It may be necessary to further investigate <br /> groundwater quality downgradient of the source area. <br /> A Division of San Joaquin County Health Care Services <br />