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Geofogica(TecfmX* s Ince <br /> 2741 River Read <br /> Madrsio,Cafifon.95351 <br /> (209)538-642419 C#538-5852 <br /> REPORT <br /> Gmundwateir Monitoring <br /> Winter Quarte- 1997198 <br /> George's Service <br /> E600 Durham Ferry Road <br /> Tracy, California <br /> Project No 425 2 <br /> March 24, 1998 <br /> IEXIEC'1 T:VE SUMMARY <br /> This report summarizes the Winter Quarter 1997/9 <br /> $ round of groundwater monitoring and <br /> testing that took place on February 24, 1998 The test results show that relatively elevated <br /> concentrations of the aromatic hydrocarbon compounds (BTEX) and gasoline range <br /> petroleum hydrocarbons (TPH-G) are present in 5 of the 9 monitoring wells (MW-1, MW-2, <br /> MW-4, MW-5 and MW-102) <br /> In MW-2, '/4 inch of free floating gasoline product was observed <br /> I <br /> Three domestic water wells in the immediate area of the tanks were tested and found not to <br /> contain gasoline at this time <br /> The top of casing elevations were surveyed into a USGS benchmark Site specific gradient <br /> and bearing were calculated and found to be 0 0012 ft/ft at NO2°W A vertical groundwater <br /> gradient was not calculated between MW-2 and MW-102 because of the floating product in <br /> MW-2 <br />