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COLORADO DEPARTPU:NT UI~ H (~+1.1'11
<br />Water Quality Control Uivlsiuu
<br />4210 East ll.ih Avcum•
<br />Denver, Colorado SOT~U
<br />1:11'1 i;;i:1!.;'
<br />ill,!:?; :. 11111nii l.~li,: hii;9i'Ai:1~
<br />Ul.illi I~:LI:;SU': ';Ii:L
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<br />CONTACI: harry P1. Rr•.sr,lrkc
<br />t•line l;nginr:er
<br />Dlue Ribbon Co;l Cutup:rr,y
<br />P.O. Sox Sti
<br />Delta, CO 81416
<br />(303)+874-756.1 (t,'estern Associated Coal rtlice)
<br />(3U3)i929-:i91i ([Slug Ribbon Pliuc•;
<br />• AMIiNDMENT P.EQUESI'
<br />In a letter dated April 5, 19!25, which was rcr~_~•,~d be t';e 1,'000 i~prii 9, 1981,
<br />)31ue Ribbon Coal Company reyucsted an amendrrcut for C;,r permit. to add
<br />discharge paint 004 and to review Uu~ pr_rmit limitations fur ci!Sr';.argr• point
<br />UUl, since th16 discharge tluw has been rudu:•ed. Changes to the facility were
<br />initiated following a t~nclrr.lcal revision approvud by Colorado :9ined Lard
<br />Reclamation llivisfon in September L984. Thcsr• c1;anF;es included a reallg::rrent
<br />and diversion of ephemeral drainage water narti~ of tLe mine . nd otl;r`r
<br />diversions of surface nmoff water away from disurrbed mining areas and :;round
<br />the lh pond, and c•liioinat.ion of .the ill pony'. 'I}~u;: ~!ischargc point U01, which
<br />previously contained roin+•.water and surtacr ru:,ui: ~.:atur, •.rill row usual 1,
<br />involve only surface runniY w.tter from punr~ ~,. Dis,rliur~e point J0+ wili'_•~
<br />the direct discharge of mine water into Ilub~:.,~! CreCl. without util'_zir.g a:.;:
<br />settling ponds.
<br />Water which will enter pond .fl during; most urcu::iun:. is suctace runoff water
<br />from yard drainage ar,•as and disturbed arca~.. in v condition where t:.c -,:+~~
<br />water might not be in cnmplinnce with permit lir..it:; fur discharge OU4, tL..
<br />mine water might be diverte:rl into pond al ,r•:~I t.i~cn tl:ruugh discharge point
<br />001; this diversion .Is exper.ted to occur Duly r~r.•:sionaliy, o: scan !ens
<br />Iruquently.
<br />Discharge points U02 uu,! 1103 urc uuch~utt;cd, iuv~•Ivinl; seliuuninti:r. pc,nds ~nr
<br />surface runoff water sources w.ttli maximum 1 I~~.n; c:;timatc•: U, be in the .. .. ~.
<br />rauye as previously da::~ri Led (U.79 rfs),
<br />• The dlscharl;e struc[urr. fat' U111 was changed t„ ,: ~ inch dewa[ering Je•:~.cc .~:.:'.
<br />an 1! inch 1~rimary spillway, with a mar.i;nwn :inn: L•~,la t:.c ::pi_rw:r: ~,t 2.:i •_:,
<br />which wuuJ~l allow a ~Ii.;chargc of tlw 111 yc,rr-?4 .:our ~;t~ rs: in ~.. .:%~urs. I,,:.::
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<br />,: .1, which pn•cc•des (111, now liars a i~~:,il;n snr:a,•,~ i:ui~;~.r 0.~:' .~..:~~.~-[
<br />Ure lU y.•:u-24 hour st•r~m .:w•n L.
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