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I <br /> 28 September 1992 <br /> (GeoAudit CV42F5-1. 26) <br />' Page 2 of 3 <br /> FINDINGS <br />' Casing elevations were surveyed relative to a temporary bench mark <br /> with an assumed elevation of 100 feet, and the depth to groundwater <br />' was measured with a Solinist water level meter. The relative water <br /> elevation for the monitcring wells was then calculated by <br /> subtracting the depth from the casing elevation (Table 1) . <br />' TABLE 1--GROUNDWATER DATA <br /> 10 September 1992* <br /> Relative Relative <br /> Casing Depth to Ground Water <br /> Well No. Elevation Water Elevation <br /> MW-1 100. 31 11 . 25 89 . 06 <br /> MW-2 99 . 77 9 . 58 90. 19 <br /> MW-3 100. 13 9 . 26 90.87 <br /> * All mesurments in feet <br /> These results indicate that water levels have risen in MW-2 and MW- <br /> 3 since June 1992 and declined slightly in MW-1 (Table 2) . As a <br /> result, the water level in MW-2 is now higher than in MW-1 . These <br /> changes may be transitory and related to tidal fluctuations. Tide <br /> tables for the sample dates are included in Appendix B. <br /> TABLE 2--GROUNDWATER DATA <br /> 9 June 1992* <br /> Relative Relative <br /> Casing Depth to Ground Water <br /> Well No. Elevation Water Elevation <br /> MW-1 100. 31 10. 95 89 . 36 <br /> MW-2 99. 77 10. 95 88 . 82 <br /> MW-3 100. 13 1.0. 72 89. 41 <br /> The hydraulic gradient determined from the data is 0. 01.26 ft/ft, <br /> flowing to S 250 E (Figure 2) . <br /> TPH as gasoline was detected in sample MW-2/9-10-92 at a <br /> concentration of 5. 7 µg/L (ppb) . TPH as diesel was detected in <br /> sample MW-1/9-10-92 at 54 µg/L. None of the BTE&X compounds were <br /> detected in any of the samples . The laboratory results are <br /> sumarized in Table 3 . The laboratory report and chain of custody <br />