Laserfiche WebLink
I <br /> 4 <br /> i <br /> III. Ground-Water Conditions <br /> In light of community concerns about possible effects of gravel mining on ground water, ground- <br /> water collected quarterly from the network wells since March <br /> water level and quality data have b q y <br /> 1994 in order to initially characterize pre-mining ground-water conditions beneath the permitted <br /> mining area and to eventually identify any direct effects of aggregate extraction. Also, as part of <br /> Teichert's plan to dry-pit mine, monitoring of the ground-water levels will provide the necessary <br /> input to eventually establish and maintain a buffer between the base of mining and ground water. <br /> i <br /> The quarterly measurements made during 1994 through early 1998 have been compiled into a <br /> table ofp round-water depths and corresponding elevations in each network well. In addition, <br /> g <br /> ground-water elevation hydrographs for selected wells are presented in this section to illustrate j <br /> ground-water conditions beneath the area during the last four years of monitoring activities. <br /> Ground-water elevation contour maps for selected periods are presented in this section to further <br /> illustrate recent ground-water conditions. A table of the corresponding water-quality results from <br /> each well sampled is also presented, as are hydrographs of selected water-quality constituent <br /> II <br /> concentrations in selected wells. Ground-water elevation hydrographs for each network well, <br /> ground-water elevation contour maps for each quarter, and laboratory analytical data sheets for <br /> each well sampled are included in the Appendix. <br /> i <br /> Ground-Water Levels <br /> Ground-water levels measured in the shallow wells were generally stable during 1994 through <br /> I, <br /> early 1998, typically fluctuating three feet or less during this time. Ground-water elevations in <br /> the shallow zone have ranged from approximately 76 feet MSL in the southeast portion of the <br /> monitoring network area to 86 feet MSL to the northwest. The lowest ground-water levels in the <br /> i <br /> shallow network wells have been observed generally during the late spring to summer, with <br /> i <br /> i <br /> ® LUHOC]NFF & SC:ALMANINI <br /> N <br /> 6 E <br />