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k <br /> . /PA E X 11244 Pyrites Way•Gold River,CA 95670 <br /> E N V I R 0 T E C H , I N C Phone 916 851 0174 ® Fax 92U61NRY'20 Frf WOO 242849 <br /> J Fa l J ', 4,V i ,! ,7j , I ! <br /> EPvIRIJ,ti,-,Lt.i AL <br /> May 10, 2006 HEALTH DLF'ARTHE,IT <br /> Mr Michael Infurna <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, 3`d Floor <br /> Stockton, California 95202 <br /> Subject Production Well Sampling Results-April 2006 <br /> Flag City New West #1003 <br /> 6437 West Banner Street, Lodi, California 95242 <br /> Apex Project No NWPO1 004 — - <br /> Dear Mr Infurna <br /> N <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 Broggt Road The sampling is in response to a San Joaquin County Environmental 0 <br /> Health letter dated September 16, 2005 Groundwater samples were collected on April 18, 2006 ' <br /> and analyzed for the following <br /> Analysis Abbreviation Desrgnatron USEPA Method No <br /> Total Petroleum Hydrocarbons Gas Range <br /> as Gasoline TPHg Hydrocarbon <br /> Benzene <br /> Toluene Aromatic <br /> Eth (benzene BTEX Volatile <br /> Xylenes Total Organics <br /> Tertra Butyl Alcohol TBA 8260E <br /> Methyl Tertiary Butyl Ether MTBE <br /> Di-isopropyl Ether DIPS <br /> Ethyl TertiaryButyl Ether ETRE Seven Fuel <br /> Tertiary Amyl Methyl Ether TAME Oxygenates <br /> Ethanol <br /> Methanol <br /> Results were below detection limas for the above listed constituents The results have been <br /> tabulated and included as an attachment Also attached are the laboratory report and chain-of- <br /> custody form <br /> • Apex recommends continued monthly sampling of the CSA wells <br />