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-13- <br />2.05.3(3) t~fine Facilities <br />:~ The information ofi the existing haul/access roads desien l•ritn surfacz runcfi <br />drainage control pidn appears to be adec,uate, ho~:;ever, the description or the <br />haul/access roads to be constructed in this per;,,it tom has not been provided. <br />The description o-' the haul/actor roads to be constructed shdli include a mdp <br />' ~ 1nd1C3tir,g ih°_ General 1CCatl On Of the haul road 1':hlCh Connects the adV an tiny <br />mine pit to the existino haul road "A" nedr Std. Igo+00. The description shall <br />also include vertical alienr,.ent, typical road cross-section, maxi: ,cm cut ar,d <br />fill slopes, associated read ditches and cross-drainage culvert"design v;iih <br />supocrting calcuidtion. <br />RES?GS~E <br />do haul/access roads are to be ccratruct2d during the tote of t'r,is <br />per?it. fiaul and access roads 2s upped hive tJEen in esist2nce since corstritc- <br />tioa is 1976. <br />RoadWavs "Wit~7ln the 1*.,a:.2dlate n1P.ilg plt 2r2a" ar°_ 170: induced <br />Wi*_;:in the Code of Colorado Regulations Deiilitica o;. "road." <br />?ll truck rou*_ES to be constructed during t`,e per3it tEr~ c:ill be <br />°w=Mil C-.^.e 1~EGiat2 IIlnin?,~ are2," al3 are ttt 2r2t0r2 2nd3DC srom anV 6JStrL'C- <br />t1CA speci'icatioas. In g°_n2ral, •IlOiiE9Er, tllniu~ area trllCK r0L't25 are D+!il= <br />k4tl a Cr0'~ , art ditC.^.2Q On 21t12r SlaE, f'la`re bE^.RS Of at leas: 2:~1e =E_; = OR <br />OUtS1C°_ {d D'+ SlODE) E{DOSUr2S, aP.d OP. if ei:CEEd orad2S 0i eiF,~nt y2rC E .Cr <br />dis.a~cES c. _ess tea 100 yards. T;•picai truck routes are frc~ !~ .ee_ t~ iC0 <br />• fee xice, _2 surfaced With sized scoria {Red Dos). an3. are_>•r'iatai-E_ "_--- <br />catzrp___a_ ~=G and 1~G motor gradErs. <br />2.0.3(') Ponds. I;:,~OUndm.=_nts and Diversions <br />1. Culver D~sicns: Peak f7 ow estimates used in desiening the culverts <br />vrere mace usr,g the i`1cMath fomula. The method l•ras used incorrectly. In <br />ceterminina t'r:e rainfall intensity ~010'r1y0 neciacted the last stet in the <br />process. The value given by Cclo~.r~o as the rainfall intensity (i) needs iv be <br />dl'vi ded by t;ie bdS in file Of-COnCc'ntrdti 0n In hGUrs In Order t0 get t..2 CGrreCt <br />i value. This •.ras done for several of the a;lveris and they 4rere found i0 be <br />t•rholiy inad2euate for the de<_ign fiolr. Col.oryc must correct':y estimate the <br />peak flag for each of the culverts, describe culvert size,. type, inlet ar~d outlet <br />COnTlgUrdt10n5, desien headlrat2r end taiie:a ter if any, and addCcSS e!Abani:m2,^,i <br />protection and stability ~•:her2 nec2ssGry. <br />2. USIE Calculations: The applicant should provide justification for use of <br />~.~~ -: ~ old ~.^0 eta<n ScClL:B.i~ delivery a:.10 meT_170 Ci In de=a r:ul nln0 SEC1Tent <br />yields. Experi~~:ental evidence on lrrtich the method is based mas largely derived <br />from eastern and mida:est2rn 'Aatershe~s: Tr,e delivery ratios predicted by <br />Co1e::yo using this method are substaniialiy lo~:rer than,raties which have been <br />accepted by the Division in the past. If the applicant is a~::are or" evidence <br />frGm laesiern Y(dtersf;ed5 whlCh S4ppOrtS the 1Cb1E1' delivery YatiO 'lalUeS, th15 <br />should be provided to the Division. <br />• 3. v=~~ CP Facto rS: , ~ ~ ~ '/' ; t;O to , fi C!, r2 Qi t0 es ii C:d to <br />Colc,r~o use.. JS D.. T~_hn.cdl 50 <br />~5 faCLvt"S for m'J iChlnc. This TigltY2 1S nyU2S ~l 0(idDt2 aS 1L d0e5 nOc t?VO_ s)C~e <br />9 <br />