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• / APEX 11244 Pyrites Way•Gold River,(A 95670 <br /> E NVIROTECH , INC Phone 916 8510174+ Fox 916 8510177• Toll Free 1 800 242 5249 <br /> February 3, 2006 <br /> Mr Michael Infurna <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, 3rd Floor C=FQ ` F' "lGOn <br /> Stockton, California 95202t"V3R0'�' v' <br /> F'ER14 E <br /> Subject Production Well Sampling Results <br /> Flag City New West 41003 <br /> 6437 West Banner Street, Lodi, California 95242 <br /> Apex Project No NWPO1 004 <br /> Dear Mr Infurna <br /> Apex Envirotech, Inc (Apex) has been authorized by New West Stations (New West) to submit <br /> the sample results of County Service Area (CSA) production wells CSA-31-1 and CSA-31-2 <br /> located on De Broggi Road The sampling is in response to a San Joaquin County Environmental <br /> Health letter dated September 16, 2005 Groundwater samples were collected on December 21, <br /> 2005 and analyzed for the following _ <br /> Analysis Abbreviation Designation I USEPA Methot! No <br /> Total Petroleum Hydrocarbons TPH Gas Range <br /> as Gasoline g Hydrocarbon <br /> Benzene <br /> Toluene Aromatic <br /> Eth (benzene BTEX Volatile <br /> X lenes Total Organics <br /> Tertiary Butyl Alcohol TBA I 8260B <br /> Methyl Tertiary Butyl Ether MTBE <br /> Di-isopropyl Ether DIPE Seven Fuel <br /> Ethyl Tertiary Butyl Ether ETBE Oxygenates <br /> TertiaryAin l Methyl Ether TAME <br /> Ethanol <br /> Methanol <br /> Results were below detection limits for the above listed constituents with the exception of <br /> ethanol at 6 3 parts per billion at well CSA-31-1 The method in which methanol and ethanol is <br /> analyzed at the lab is different this quarter from previous quarters and was not reported as <br /> detected previously The results have been tabulated and included as an attachment Also <br /> • attached are the laboratory report and chain-of-custody form <br />