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<br /> <br /> <br />ISSUES RAISED AFTER THE INITIAL COMMENT PERIOD <br />(During the /rrformal Conference Cornnrenl Period) <br />3. "The members of the Henderson Water Ski Club have a concern with [he 124ih Estate partners application for <br />additional mining and sealing of the pi[ with clay for water storage. `What effect will this sealing process have on <br />the natural Flow of groundwater?' We are concerned about the level of our lake being effected by this process." <br />(Tom Knreger; Henderson Wnter Ski Chub; Ocrober 30. 200/) <br />DMG Response- The applicant will install three piezometers so that groundwater elevations can be recorded on a <br />regular basis, and a relationship between pond level and groundwater level can be established. The wells will be <br />placed along the southern boundary of the Ski Club's property, immediately south of the mine and north of the mine <br />and 124'" Avenue. The piezometers will be installed prior to mining, and sampling will be initiated within one week <br />after the wells have been installed. The wells will be sampled at least monthly through mining and reclamation <br />activity. During the irrigation season of May through September, water elevations will be recorded at least every <br />other week. <br />Following mining and lining of the water storage reservoir, [he applicant will continue to monitor groundwater levels <br />in the pond of the water ski club to ensure that the lined reservoir will not have a damming effect on groundwater <br />and cause significantly lower groundwater elevation in the pond of the Water Ski Club. Water level in the pond of <br />the Ski Club will be compared with local groundwater elevations, as measured by the three piezometers. <br />Comparison of relative water levels in the water ski pond with those in [he monitoring wells will provide a measure <br />of the impacts of dewa[ering activity. If the Water Ski Club's pond surface decreases by more than 0.5 feet from <br />the expected seasonal elevation, the applicant will take mitigative measure mutually agreed by the applicant and the <br />Henderson Water Ski Club. Such measures could include [he installation of a french drain around the water storage <br />reservoir, deepening [he water ski club, and/or discharging from the reservoir to the Water Ski Pond. The mitigation <br />measures of choice will be submitted to [he Division in the form of a Technical Revision to the permit once it has <br />been determined that the Henderson Water Ski Club has been impacted by the mining and reclamation activities. <br />ISSUES RAISED DURING THE INITIAL COMMENT PER/OD THAT THE D/VISION <br />BELIEVES ARE NOT WITH/N THE./URISD/CT/ON OF THE DIV/S/ON OR BOARD <br />"...My concern lies in the over-maximum amount of traffic on 124'h Avenue, the resulting noise and air pollution. <br />Where will they be exiting [he property and where will the processing of the gravel be done." <br />(Shirley L. Fngnn; September 4, 2001) <br />