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<br />WPSTERIV iiiiiiiiiiiiiiii iii <br />sss <br />~>~ <br />ASSOCIATION <br />ING <br />The Naliona! <br />RECEIVE D <br />FueESupply <br />Cao a(ize <br /> October 2, 1998 OAT 8 i='~~ <br />Mr. Harry Ranney DIV <br />OF MINERALS <br />Re lamation Specialist . <br />8 GEOLOGY <br />Offi a of Mined Land Reclamation <br />131 Sherman St., Room 215 <br />De ver, CO 80202 <br />RE: TECHNICAL REVISION REQUEST NO. 38 FOR HYDROLOGICAL MONITORING <br />PROGRAM AT THE NEW HORIZON MINE. PERMIT #C-tii-008. <br />Mr. Ranney: <br />New Horizon Mine is migrating to the west-northwest and toward an area that is not presently <br />~g monitored for ground water parameters. A minor revision request (#41) has been submitted to <br />3 for the installation of six ground water monitoring holes, three up dip and three down dip of the <br />acted future areas of disturbance for the New Horizon Mine. These wells will be monitored to <br />;ct a minimum of one-year worth of baseline data in anticipation of mining in the future. With this <br />r, WFC is seeking DMG's approval of a revised hydrological monitoring plan, which will fulfill the <br />iitoring requirement of the future expansion of the mine. <br />• The new ground water monitoring holes GW-N41, GW-N42 and GW-N43 will be <br />located up dip of projected disturbance and will monitor overburden, coal zone, and <br />underburden respectively. The ground water monitoring holes GW-N44, GW-N45 and <br />GW-N46 will monitor ground water holes down dip of projected disturbance and will <br />monitor overburden, coal zone and underburden respectively. Each horizon <br />(overburden, coal zone, and underburden) will be monitored by a separate hole to <br />prevent problems encountered with double and triple completion techniques. Map <br />2.04.7-1-A (Exhibit 7-1 revised and submitted with MR41) shows the location of the <br />six (6) new ground water monitoring holes. Each of the six (6) groundwater monitoring <br />holes will be monitored as shown on revised Table 2.04.7-1. Water levels will be <br />monitored monthly and water samples will be collected and analyzed quarterly. The <br />parameters analyzed for during the quarterly monitoring will be the same as those <br />shown in Table 2.04.7-2. <br />• After the initial monitoring of each of the six (6) holes, the old monitoring holes GW- <br />N13, GW-N14 and GW-N15 will be abandoned. Abandonment reports will be <br />submitted to DMG. <br />PO ~Ox 33424 <br />Den(,er, ('A 80233-3124 <br />Tel~hone 303/450-9976 <br />w (a la kewood®pcisys.net <br />