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M ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> _� Uait Supervisors <br /> e, % Donna K. Heron, R.E.H.S. <br /> a Carl Bor an, R.E.H.S. <br /> _ .1 Director 304 East Weber Avenue, Third Floor <br /> AI Olsen, R.E.H.S. SYOC1CYOri, California 95202-2708 Mike Huggins, R.E.H.S. , R.D.I. <br /> Douglas W. Wilson, R.E.H.S . <br /> Program Manager Telephone: (209) 468-3420 Margaret Lagorio, R.E.H. S . <br /> l� Fo6 Laurie A. Cotalla, R.E.H.S. <br /> Pro ram Manager Fax: (209) 464-0138 Robert McClellon, R.E. H. S . <br /> 8Mark Barcellos, R.E.H.S. <br /> i <br /> ED RALSTON <br /> 2000 CROW CANYON PLACE SUITE 400 <br /> SAN RAMON CA 94583 <br /> RE : 8606 THORNTON ROAD SITE CODE : 2261 <br /> STOCKTON CA 95209 <br /> WORK PLAN : Additional Site Assessment <br /> DATED : April 14 , 2003 <br /> PREPARED BY : Secor <br /> APPROVED : 1X] <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 25299 . 37 ( c ) ( 3 ) 1 : <br /> 1 . To install 2 additional deep MWs . To collect selected soil and <br /> ground water samples for analyses . <br /> 2 . To analyze soil samples for : TPH- gas , BTEX , and fuel oxygenates using <br /> 8260b , <br /> 3 . To develop the MWs after installaion . <br /> 4 , To analyze ground water samples for : TPH- gas ; BTEX , 5 fuel <br /> oxygenates , ethanol , 1 , 2 -DCA , EDB , using 8260b , _ <br /> COMMENTS AND CONDITIONS : <br /> 1 , An additional third deep well will be required east ( downgradient ) of <br /> MW4due to the increasing MTBE concentration in ground water . Soil <br /> and groundwater samples must be analyzed for the above gasoline <br /> constituents , <br /> 2 , All necessary access agreements and permits must be procured prior to <br /> being any work . <br /> 3 , A report of finding must be completed and submitted to EHD and <br /> CVRWQCB by September 1 , 2003 , <br /> DATED / Lb 3 BY 4 kA <br /> Harlin Knoll , Senior REHS ( 209 ) 468 - 3442 <br />