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San Joaquin County <br /> °"`"' Environmental Health Department DIRECTOR <br /> �• —,C-s '•Q Donna Heran,REHS <br /> r. � 1868 East Hazelton Avenue <br /> N: Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco,REHS, RDI <br /> �+•. P <br /> Website: www.sjgov.org/ehd Kasey Foley,REHS <br /> Linda <br /> Phone: (209) 468-3420 <br /> Fax: (209)464-0138 <br /> November 21, 2012 <br /> Ms. Tammy Trigo <br /> 22550 S. Sixth Street <br /> Banta, CA 95304 <br /> Subject: Moore Petroleum Bulk Plant <br /> 5491 F Street <br /> Banta, CA 95304 <br /> Dear Ms. Trigo, <br /> Thank you for your inquiry by telephone on July 11, 2012, regarding the pending closure of the <br /> Moore Petroleum leaking underground storage tank (UST) case. During a return call to you on <br /> July 12, 2012, you inquired of the San Joaquin County Environmental Health Department (EHD) <br /> if the contamination released on the former Moore Petroleum site could be affecting your well's <br /> tank pressure and asked if your water could be tested. <br /> The EHD does not know how the contaminants released to groundwater from the UST system <br /> formerly on the Moore Petroleum site could affect your well's pressure tank, but based on health <br /> concerns expressed to the EHD by several other residents in the area, the EHD directed a final <br /> round of groundwater sampling of the residential domestic wells around and near the former <br /> Moore Petroleum site; this sampling included your well. <br /> The recent sampling of your well water occurred on October 11, 2012, and laboratory analysis <br /> of the sample did not detect reportable concentrations of any of the chemicals of concern <br /> commonly associated with petroleum releases from UST systems: total petroleum hydrocarbons <br /> quantified as gasoline (TPHg), the aromatic volatile organic compounds benzene, toluene, <br /> ethylbenzene and total xylenes (BTEX), the five fuel oxygenates, of which MTBE is usually <br /> familiar to most people. The latest sampling and analysis likewise did not find detectable <br /> concentrations of compounds associated with diesel, kerosene or motor oil, or the chemicals <br /> 1,2-dichloroethane (1,2-DCA) or ethylene dibromide (EDB). None of the samples collected from <br /> the residential domestic water wells on properties adjacent to the Moore Petroleum site or in the <br /> general down-gradient direction that were sampled during the sampling event (12 wells total) <br /> contained reportable concentrations of any of the chemicals noted above. <br /> The consultant for the former Moore Petroleum site, Apex Envirotech, Inc., will be posting these <br /> results and a report of the sampling event on GeoTracker, the website the California State <br /> Water Resources Control Board (SWRCB) maintains at https://geotracker.waterboards.ca.gov/, <br /> where these results and numerous reports on this site can be reviewed by the public. The site's <br /> global ID is T0607700183. <br /> At this time, the plume of polluted groundwater that resulted from the leak from the UST system <br /> formerly located on the Moore Petroleum site has been delineated and appears to be declining <br /> in size and concentrations. As the SWRCB has set a policy to close UST leak cases that do not <br /> Ms. Tammy Trigo Response Letter 1112 <br />