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Justification <br />The original operational water monitoring activities conducted on the Kerr <br />Mine Area extended and verified the baseline monitoring record contained in the <br />1980 application for State Mining Permit No. C-006-B0. The rigorous hydrologic <br />monitoring program originally in place was modified to more effectively address <br />phased mine development, especially in undisturbed areas where most of the initial <br />monitoring sites were located, With Kerr limiting operations under currently <br />permitted plans to the Kerr south area, further modifications of the current <br />phased monitoring plan is appropriate. <br />Kerr Coal Company revised the water monitoring plan in TR-19. The revised <br />plan, which follows, served its designated purpose (to monitor the effects of <br />mining on the hydrologic balance) both for the short and long term. In TR-23, all <br />water monitoring at the mine was terminated. The monitoring plan is retained <br />herein fox reference. A general description of the plan is presented, followed by <br />the original listing of sites and maps which enumerate the details of the plan. <br />General Description <br />The general approach of this revised water monitoring plan is to monitor <br />only those sites which may be affected by mining operations. Please note that no <br />changes axe proposed with respect to the annual schedule or procedures. Water <br />monitoring activities at the Kerr Tipple Area are unaffected by this plan and will <br />remain the same as in the past. The modified plan will only eliminate monitoring <br />of those sites located in unaffected areas. <br />Based upon the projected drawdown of the coal aquifer described on page 780- <br />114aa of the permit document, little, if any, affect will be noticed more than <br />2,000 feet in advance of the active mining area; therefore, ground water <br />monitoring activities will extend from the southern permit boundary to 2,000 feet <br />beyond the disturbance defined for each phase. Similarly, surface water and <br />alluvial well monitoring for each phase will be conducted in all areas from the <br />southern boundary northward, but will extend only to the area immediately adjacent <br />to and downstream from disturbance. <br />TR-23 23-175 Revised June 2007 <br />