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Geofogical Technw* s Inc. <br /> 274194w Axd <br />' Modesto,Caafm= 95351 <br /> (209)538-"V1Fa,1#538-5852 <br /> REPORT <br /> Groundwater Monitoring <br /> Fall Quarter 1996 <br /> George's Service <br /> 1600 Durham Ferry Road <br /> Tracy, California <br /> Project No 2812 <br /> December 18, 1996 <br /> EXECIT ITE SUMMARY <br /> This report summarizes the monthly groundwater level measurements, groundwater gradient <br /> calculations, and the Fall Quarter 1996 round of groundwater monitoring and testing that <br /> took place on September 11, 1996 The test results show that detectable concentrations of the <br /> aromatic hydrocarbon compounds (BTEX) and gasoline range petroleum hydrocarbons <br /> (TPH-G) are present in two monitoring well (MW-1 & 2) There was about 12 inches of free <br /> floating gasoline product on the water table in MW-2 This product has been removed daily <br /> from the well using hand bailing methods <br /> Three domestic water wells in the immediate area of the tanks were tested and found not to <br /> have contain gasoline at this time <br /> The groundwater level has fluctuated about three feet since May 1995 Site specific gradient <br /> and bearing measurements and calculations show that groundwater flows in a northernly <br /> direction at approximately 0 0024 ft/ft <br /> 1.0 GROUNDWATER MONITORING <br /> 1.1 Hydrology of Site <br /> On a monthly basis from February to September 1996, except for August, the depth to <br /> . groundwater was measured in the three wells The average groundwater elevation ranged <br />