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COLORADO DGPARTh11:N'P OH' I!1ir11:C1! <br />Water (luality Control Divitii~•~1 <br />421.0 Bast 11LIi Avenue <br />Denver, Colorado l;022U <br />i;A I' I r)iJALG <br />`•d lb:Ut~.P!~I~'. ::~!: i :1'IU P.IifdlA<Al. <br />i~l I'I. R I I!Iti ~tJ Cn,11, COhIYA1dY <br />D!,IIIC k I L'DUiJ hL1NE <br />!'I.r.ft!1 ru: t;O-0013553 <br /> <br />CON'fACL': Larry t1. kcsclil:r <br />Nine Gnginecr <br />Dlue Ribbon Co:;1 ('ump,n.y <br />P.O. Dox 58 <br />Uelta, C,0 1j14i.G <br />(303)+874-7561 (We r:t~ rn e1s,i,ciatcd Coal Office) <br />(3U3)+929-5911 (iil:w Ribbni; t4inc) <br />r\fL•sNUNI':[J 1' IlHQI11~aT: <br />In a .1etCer rla Lid :\pril ~, 1";ij, wliirli w, u: t'ece~ived by Cite IfQCD April 9, 1985, <br />Iiluu kil;buu Co.tL Compan,; r~~,;msii~1 ,r'. am~rrrdment fur the permit to add <br />disrltarge point 0114 an.i to n~vi~_ti; tln~ purmit .limitation' for discharge point <br />U01, since this disclutrgr'L;w Icts bc~:u reduced. Chang~~ to the facility were <br />initiated pullowit:g a toc~i:~ic::l r~•vision approved by Colorado Mined Land <br />Reclamation llivisiou in Sipt~:~,ihrr 19!14, Tltese changes included a realignment <br />and diversion of epltemrra! ~Ir,!inaf;e water north of [hc mine and other <br />diversions of surface runr.li v:,lrr .naay from disturbed mining areas and around <br />tLc 111 Fund, end eliminatin~n of tl„~ .f2 puurl. Thus discharge point 001, which <br />preciously r.untnined rein'.. ::.n:w~ .in,l surface rwtoff water, will now usually <br />involve only :surface runui i ~:.~trr I rom puu~i )11, Discharge point 004 will be <br />the direct discharge o!. rtii;u '«,itcr into I!ubhard Creek without utilizing any <br />seCl.l ing pr~m.ls. <br />Water which will enter pomi .~l.,:uriug most uccasious is surface runoff water <br />from yard drainage areas and rlis[urh~c•d areas. In a condition where the mine <br />water might not be in r.ompLi.utce with permit .Limits for discharge 004, the <br />mine water mip,ILL be ~livrrl~~i in;o I,mn +~1 ;inri then through discharge point <br />001; [leis rlivcrstun i:: ,•x!~~c~~ir•J ter urcur only oec;tsionally, or even less <br />frcqumtt ly. <br />Uiscluiry•,e point:; 002 .tml (;~l'~ .ire unchangc,l, involving sedimentation ponds for <br />surface runoff water source:~. a~ith maximum lluws estimated [u be in the same <br />rwt•,c ns pn•vlnualy .Iusr~t'ih~•J (O. i'1 cis). <br />'Phe discharge struct!u,• Lur Un! was: clrnngud u> a 2 inch dewatering device and <br />an 8 incl; I~rioidry ~;pilLw,ty, vitii .i maximum f.Low from tiro sp.iLlway of 2,2 cfs <br />which would a.Llow n disrli;ir,~~: ul the IU ve:~r-24 hour storm in 3.1 hours. Pond <br />l,'L, wliirli preccdus UUI, now li.c, ,~ 'r::iru :,urf;:ce inflow uL 0.57 acre-feet for <br />the 10 :•ret-24 hour ~turGi .,."i <br />