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sftwoll N%mw <br /> San Joaquin County <br /> .� Environmental Health Department DIRECTOR <br /> Donna Heran,REHS <br /> 1868 East Hazelton Avenue <br /> c. PROGRAM COORDINATORS <br /> Stockton, California 95205-6232 Robert McClellon, REHS <br /> • Jeff Carruesco,REHS, RDI <br /> Cq �P Website: www.sjgov.org/ehd Kasey Foley,REHS <br /> O F o Rc� Linda Turkatte,REHS <br /> Phone: (209)468-3420 <br /> Fax: (209) 464-0138 <br /> November 21, 2012 <br /> Mrs. Debbie Rhodes-Kelso <br /> 5451 W. F Street <br /> Banta, CA 95304 <br /> Subject: Moore Petroleum Bulk Plant <br /> 5491 F Street <br /> Banta, CA 95304 <br /> Dear Mrs. Rhodes-Kelso, <br /> Thank you for your comment letter dated July 20, 2012, regarding the pending closure of the <br /> Moore Petroleum leaking underground storage tank (UST) case. The San Joaquin County <br /> Environmental Health Department (EHD), is sorry to learn of your son's health issues and <br /> wishes him and you the best. <br /> Based on the health issues expressed in your letter, particularly regarding methyl tert-butyl ether <br /> (MTBE), and also the concerns of several other residents in the area, the EHD directed a final <br /> round of groundwater sampling that included the residential domestic wells around and near the <br /> former Moore Petroleum site; this sampling included your well. <br /> Your well had previously been sampled and analyzed for the chemical MTBE 92 times between <br /> July 2000 and December 2008, during which time MTBE was detected twice; the first time on <br /> October 27, 2000, at a concentration of 14 microgram per liter (lag/L) and the second on July 22, <br /> 2002, at a concentration of 64 lag/L. One tag/L is often referred to as one part per billion. The <br /> maximum contaminant level (MCL) allowed for MTBE in public drinking water is 13 lag/L, so both <br /> times the chemical was detected the concentrations did exceed the MCL. The recent sampling <br /> of your well occurred on October 11, 2012, and laboratory analysis of the sample did not detect <br /> reportable concentrations of any of the chemicals of concern commonly associated with <br /> petroleum releases from UST systems: total petroleum hydrocarbons quantified as gasoline <br /> (TPHg), the aromatic volatile organic compounds benzene, toluene, ethylbenzene and total <br /> xylenes (BTEX) or the five fuel oxygenates, of which MTBE is the most familiar to most people. <br /> The latest sampling event likewise did not find compounds associated with diesel, kerosene or <br /> motor oil, or the chemicals 1,2-dichloroethane (1,2-DCA) or ethylene dibromide (EDB) at <br /> reportable concentrations in the samples collected from your well or any of the other 11 wells <br /> sampled. <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 /> Ms. Debbie Rhodes-Kelso Response Letter 1112 <br />