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2 <br /> Requests for Addit.ion_a1+Inf.orma.ti.on <br /> Pionit� - Monitoring data on the Purgn,toire River system <br /> hn.s been collected in strict compl-innce with PTPDF:-' permits and in <br /> accordance with ngreements between CFP•T and TTT,PD stnfF over the past <br /> three years. CFcrI ' s reasoned npproa,eh to determ�_ni-ng the i_mpn.ct of <br /> mining on the quality of water has produced sizffiri.ent data <br /> division to find that trn.ce el-ements i for the <br /> -n the g�ochemi.cal- environment <br /> of the mining activity will haire no material effect on the quality <br /> of the hydrologic system. Because CFP-T has determined rotni. <br /> dissolved solids to be its greatest contribution to the chemi-cal <br /> degradation of the Purgn,toi-re River system a.nd because the division <br /> has determined that contributi-on to be minor and the trace elements <br /> determined to be inconsequential , the division is now in n, position <br /> to reduce monitoring requirements . CFPr:I proposes the only <br /> monitoring now reasonably required jr, that required by its PTPDFS <br /> permits. <br /> The division requost for n surface water budget is answered by <br /> the line drawing of Water system, Maxwell Mine , accepted ns <br /> information required by the NPDE'S permit appl_ica.+,ion . Currently, <br /> losses and gains are regn.rded approxima l tey Pqunl . As the mine <br /> develops , the river will become a gaining stream through the Maxwell <br /> arPa, <br /> Pond Dewaterin - CFR-I agrees to convert the ma.nizn.1 dewatering <br /> system of the sediment ponds to an automatic system by l,loeking the <br /> gate valves open as suggested by the division . The opening sizes <br /> n.nd cal:cul ations n.re included in the a.ddPndum to 1 F . <br /> Watershed 13-A - This wntershed ( 13-A) is not an n.r,,n of high <br /> use for the Tl i r(- and -i„ wel_1 si-zited for al terna.tp .^>Pdi mr,ntn.tion <br /> control . MLRD regulations do not prohibit thr; usr, of alternate <br /> sedimentation control , and CFA;I requests approval of the submitted <br /> plan to utilize a. straw bale filter. Wntershed 13-1, has not been a <br /> problem area. at the Maxwell Mi-ne. A review of the TTLR inspection <br /> reports will slzbstantia.te this claim. <br /> Inst,a.l_lation of the proposed straw bale filter would <br /> ensure additional sedimentation protection for an alrrnd,y sta.bl.e <br /> area.. <br />