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Beacon Station No.513 January 19, 1998 <br /> Lodi.California _ Tank Closure Reaort <br /> Table 2 - Groundwater Data <br /> GROUNDWATER LEVEL MEASUREMENTS LABORATORY ANALYTICAL DATA <br /> Well No./ Sampling Total Depth to Ground- Floating TPHg MTBE by Benzene Toluene Ethyl- Xylenes Oxygenates <br /> Elevationt Date Depth of Water water Product/ 8020/8260 benzene 8260 <br /> Well Elevation Odor <br /> (feet) (feet) (feet) (feet) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> MW-1 <br /> 38.82 11/21/97 79.26 61.98 -23.16 none/none <50 <5.01<0.50 <0.50 <0.50 <0.50 <0.50 <br /> MW-2 11/21/97 77.04 62.28 -23.49 none/none <50 <5.01<0.50 <0.50 <0.50 <0.50 <0.50 <br /> 38.79 <br /> MW-3 11/21/97 78.96 61.99 -23.31 none/none <50 <5.01<0.50 <0.50 <br /> 38.68 ,p1%0.50 <0.50 <0.50 <br /> Wells measured from surveyed top of the north side of well casing. TPHg=Total Petroleum Hydrocarbons as gasoline na=not analyzed ns=not sampled <br /> t relative elevation <br /> $=nd=none detected(above laboratory detection limits)for oxygenates di-isopropyl ether(DIPE),ethyl-t-butyl ether(ETBE),tert-amyl methyl ether(TAME),methanol, <br /> ethanol,and tert-butanol by EPA Method 8260. See laboratory data sheets for detection limits. <br /> 1513-1 l.ter HORIZON ENVIRONMENTAL INC. <br />