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r) J <br /> 4 <br /> x <br /> III. Ground-Water Conditions <br /> 4 = i <br /> In light of community concerns about possible effects of gravel mining on ground water, ground- <br /> water level and quality data have been collected quarterly from the network wells since March <br /> n 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 /> I <br /> input to eventually establish and maintain a buffer between the base of mining and ground water. <br /> r� <br /> Based on the initial quarterly measurements made in 1994 and early 1995, a table of ground- <br /> water depths and corresponding elevations in each network well has been prepared. In addition, <br /> r- ground-water elevation hydrographs for selected wells are presented in this section to illustrate <br /> ground-water conditions beneath the area during the first four quarters of monitoring activities. <br /> Ground-water elevation contour maps for selected periods are presented in this section to further i <br /> illustrate recent ground-water conditions. A table of the corresponding water quality results from <br /> n i <br /> each well sampled is also presented, as are hydrographs of selected water quality constituent <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 /> 1 <br /> Ground-Water Levels <br /> n <br /> Ground-water levels measured in the shallow wells were stable throughout 1994, typically <br /> fluctuating two feet or less during this time. Ground-water elevations in the shallow zone ranged <br /> from approximately 76 feet MSL in the southeast portion of the monitoring network area to 86 <br /> I <br /> feet MSL to the northwest. The lowest ground-water levels in shallow network wells to the <br /> northwest were observed generally in dune 1994, while the lowest levels in shallow wells to the <br /> i <br /> © LUHDORFF & SCALMANINI <br /> CONSUL Z I N G L N G i N F S R S ' <br /> I <br />