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.- s.i9�p ,WF1Ntf[FRA.CtlXlti�"/R16iSS0.i xllW <br /> hay may. <br /> J. H. KLEINFELDER&ASSOCIATES <br /> File: W-2006--1 <br /> December 16, 1985 <br /> Page 12 <br /> B. Ground Water <br /> The depth to ground water in this area is <br /> aparoxit.tately 30 feet from the ground surface. <br /> Monitoring well MW-1 was placed adjacent to the tank <br /> -- e-ccavation in order to sample the shallow ground water <br /> with the highest anticipated concentrations of <br /> hydrocarbons and related constituents. The local ground <br /> water gradient was not known at the time of drilling. <br /> Monitoring wells MW-2, MW-3, and MW-4 were placed in a <br /> triangular pattern around MW-1 so an approximate shallow <br /> ground water gradient could be calculated. Monitoring <br /> well MW--3 was placed halfway between MW-] and the <br /> production well. The relative elevations of the ground <br /> surface, the top of the well casing and the ground water <br /> I <br /> for each monitoring well were surveyed by J. H. <br /> - Kleinfelder and Associates on September 4, 1985. The <br /> relative ground water elevations in the four monitoring <br /> i <br /> wel is indicate a probable ground water gradient to the <br /> south- or southeast (shown on Plate 3 ) . Lrw <br /> concentrations of gasoline related constituents detected <br /> in the monitoring wells would tend to support a probable <br /> shallow ground water gradient to the south or southeast <br /> ~. (as shown on Plate 3). Monitoring well MW-1 adjacent to <br /> -t the tank excavation had the highest concentration of <br /> Af gasoline related constituents. Monitoring wells MW-3 to <br />