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0 <br /> Table 1 Water Level Data and Groundwater Analytical Results - Former Chevron Service Station#9-0959, 103 West 11th Street, Tracy, CaHorma <br /> oontmued <br /> EXPLANATION NMES <br /> i <br /> TOC =Top of casing elevation " Product thickness was measured with an MMC flexr-dip interface probe <br /> (ft) = feet <br /> DTW= Depth to water Groundwater elevation data and laboratory analytical results prior to March 9, 1995,were <br /> GWE= Groundwater elevation compiled from the Quarterly Groundwater Monitoring Reports prepared for Chevron by <br /> nnl =Measurements referenced relative to mean sea level Sierra Emnornmental Services <br /> TPH(G) —Total Purgeable Petroleum Hydrocarbons as Gasoline <br /> B = Benzene, i Laboratory reports a hydrocarbon pattern not characteristic of gasohne <br /> T =Toluene 1 Tap of casting elevations resurveyed February 23, 1994 by Ron Miller,P E x'15816 <br /> E= Ethylbenzene ° Water level measurement only was collected due to apparent obstruction in well <br /> X =Xylenes ' Hydrocarbons in the gasoline range do not match the gasoline standard pattern <br /> MTBE=Methyl-terttary-butyl ether (GTEL) <br /> ppb = Parts per billion 3 Water level elevation data for this event compiled firm the Well Installation Report <br /> —=Not analyzed/Not applicable prepared for Chevron by Groundwater Technology <br /> 6 Well was surveyed by Morrow Surveying of West Sacramento,California,April 1995 <br /> ' MTBE confirmed by EPA Method 82408 <br /> TPH(G) = EPA Method 8015/5030 <br /> BTEX = EPA Method 9020 <br /> MTBE = EPA Method 8020&EPA Method 8240E <br /> 5247 7+QM <br /> 4 <br />