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done to determine the water quality and gradient status. <br /> Gradient calculation <br /> Prior to purging the wells and collecting groundwater samples, the <br /> depth to groundwater was measured. A survey of the wells in order <br /> to calculate a gradient was completed using the cement foundation <br /> on the northeastern corner of the barn as a benchmark of 10 feet. <br /> The survey and field notes are contained in Appendix A. <br /> The depth to groundwater was measured in the three wells, by an <br /> electronic probe, from the mark located on the top of each casing. <br /> The resulting data is shown in Table 3. <br /> TABLE 3 <br /> Groundwater Elevation measurements - June 5, 1995 in Feet <br /> Well ID Well Elevation Depth to Water Groundwater <br /> Elevation <br /> MW-1 12 . 07 7.84 4 . 23 <br /> MW-2 12 .89 9. 55 3 . 34 <br /> MW-3 11.75 7. 22 4 . 53 <br /> The calculated gradient is 1320 at 0. 04ft/ft. <br /> SUMMARY, CONCLUSIONS AND RECOMMENDATIONS <br /> The analysis of the soil samples obtained from Boring MW-2 had no <br /> detectable concentrations of TPHG or BTEX. <br /> The analysis of the soil samples from Borings MW-1 and MW-3 at <br /> approximately five feet had no detectable concentrations of TPHG or <br /> BTEX. However the analysis of the soil samples at ten feet had <br /> moderate concentrations of TPHG or BTEX. <br /> The groundwater samples from the three wells had actionable levels <br /> of TPHG and Benzene. <br /> The calculated gradient is to the south east at approximately 0. 04 <br /> ft/ft. The slope of this gradient is suspiciously large for the <br /> geology of this region. There maybe unusual conditions which are <br /> impacting the gradient both in direction and slope. The irrigation <br /> ditches to the east of the property, recent irrigation of the <br /> property, slow recharge of the wells and the high water table maybe <br /> some of the reasons for suspecting the gradient values. <br /> 8 <br />