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NOV <br /> � APEX El�vrRol�r���nlT HEALTH <br /> PERM-T/SERMES 11244 Pyrites Way •Gold River,CA 95670 <br /> E N V I R 0 T E C H I N C Phone 916 8510174 • Fax 916 8510177• Toll Free 1 800 242 5249 <br /> November 17, 2005 <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 Monitoring Well MW-4A and MW-4B Sampling Results <br /> Flag City New West #1003 <br /> 6437 West Banner Street, Lodi, California 95242 <br /> Apex Project No NWPO1 004 <br /> Dear Mr Infuma <br /> Apex Envirotech, Inc (Apex) has been authorized by New West Stations (New West) to submit <br /> the weekly sampling results of offsite downgradient monitoring wells MW-4A and MW-4B <br /> (Figure) Groundwater samples were collected on November 10, 2005 and analyzed for the <br /> following <br /> Analysis Abbreviation Designation I USEPA Method No <br /> Total Petroleum Hydrocarbons TPH Gas Range 8015M <br /> as Gasoline 9 Hydrocarbon <br /> F--- I <br /> Tertiary Butyl Alcohol TBA Fuel 82506 <br /> Methyl Tertiary Butyl Ether MTBE Oxygenates <br /> Results from the well samplings are included in the attached table The laboratory report and <br /> chain-of-custody form are included as an attachment <br /> Analytical results showed below detection limits for well MW-4A, which is typical for the well <br /> and well MW-4B had a detection of MTBE which was within historical range <br />