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-13- <br />2.95.301 t•Sine Facilities <br />• The infcr:naticn of the existing haui/access roads design vlith surfaco runcr: <br />drainace contrJl plan appears to be ad?~uate, Hov:ever, the d=_scrio~lon of the <br />haul/access roads to to constructed in this per:it te:-m has not been previd~d. <br />The deSCri pti0n 0. th0 IlaU1~aC C9SS rOadS tJ •]e CCnStrUCt2d Shall 1nC}U~2 a ma7 <br />indicating the aer.eral locstiJn of the haul road 1•:hich corn_cts the advancing <br />mi^? pit tJ the existing hzul road "A" n?ar Sta. 1SorD0. The description shall <br />a1SJ include vertical alicnment, ty71C3! read CrOSS-ScCt1Cn, maXl;uCm CUt and <br />Tlll S}CD`cS, associated road ditches and cross-drair.a _? culvert design v;it'1 <br />supporting calculation. <br />RES?G°52 <br />\o haul/access roads are to be cer,structed during the t2r3 of this <br />per*_it. Haul and access roads as napped have been in 2::iste.^.ce since construc- <br />tion in 1976. <br />Soadravs °w1tnLR the mediate L"i:.i^, pit area" are r.ot included <br />witn_r, the Code of Colorado Re_ulatior.s Daiinition o: "road." <br />1. truer routes to be co15LrLCt_d durin, the peL~it t2r~ will be <br />"»~t~"tin Cr2 1-__diata C.ln 2n ?~. area," an3 are t~12L2LOre e_~2 _1pC LLO'3 a~lV CCCSLrI'C- <br />t1C;: 57eC_LiCct=0u5. Tn general, how2ve=, C11^.11~ 2r23 LrllCK rOCt25 art t~L'=~: <br />c,•ita a cro-1, ara ditched oil eit:ler side, ha`.e bermes of at least a:~_= :e_s-= en <br />OUt51C2 (dam:=.slo oe) 03p0 S1:re5, and On '_ e:iCeed £radeS Oi e1~Rt pe rC2-~= .Jr <br />disca~cas .,` _2ss tin 100 pares. Typical truce routes are free: 7~ fee_ to i^0 <br />• feet ::i,._ a__ sufac2d with sized scoria (c.ed Dog), an 3.zre ra_1ta~_a_ ^:., <br />cata'p___a_ ~-s aid :~G >iotor g_adars. _ <br />2.^c.3(=) :ends, Ir.,~•oundments and Diversions <br />1,. CU 1`J?r. UeSlCns: Pe3< floe! estimates US?d In d?SiCninC the C71Yerts <br />W2r? made US'nC the t'iCf•'!at~'I formula. I}le P:.°_thOd 'aaS llsed incorrectly. In <br />determining *_he YolnTall lnten5lt`/ ~010:lyJ ne~l2Cted the IaSt Ste? 1n the <br />process. the value given by Colavryn as the rainfall lntensit`1 (i} needs tJ b? <br />dl'Jlde~~ by t.^.e h2S in i:'? O7~ COnC2`Itrutl On in hours in OrC'.e 1' t0 Cet tf,2 CC1'Y eCt <br />l Va lU2.~ Th iS :•!aS dCne for Se`Jc ral of t`;e G:1VerL5 end tho`/ 'Acre found tC ~`? <br />mhal}y inadeouate for the design fiola. CJIc:Jyc must correctly e<_timcte t!ie <br />peak fie':! fOr Ea Ch Gf the LUIV?r u , d?SCribe CUIVErt S1Ze,. type, lnlci grid OUtle~ <br />COn T1~L'ratl OnS, deSiCn {i c'3 d~:•Ja ter and tai lv/a ter li anV, ana aCCrcSS E!'iJ a ni:12!:~ <br />protection and stability v:her=_ nee=_sary. <br />2. US!E Calculations: The applicant should provide justificzticn for use Jf <br />t-e ''_'i. icld anC iiacn Se^li ent dell :'2 ry r,:.ti0 CI?.hod In d?te r•Til ril n^ Sedli7~e.'lt <br />yi=_lds. EXp?rirental evidence on v:hich the m?t:~pd is bas?d ':1zs largely rerived <br />fYC1 ?astern and mld'r:eSt?t'n 'rlaterShe'~S: the d?11'/ery rdtlOS predlCted by <br />Cole::yo using this method are subetantialiy lo':1er than ratios 'rlhiCh have been <br />accept?d by the Division in the past. If the app}icant is zv:ere of evide-ce <br />r'ro-~ '.~estern v:atersheds vlhich supports the lc'.•rer del ivory ratio values, this <br />should be providad to the Division. <br />• 3. ;;. LE C? Factors: Colcr:yo used liSDA T~ChnCal ";ste 5D, -,"icure 2 to estir. ~__ <br />CS faCLJ`'S fOr mU}China. This flgUre 15 qU_°~a Oncb!? aS It d0'S n0~ t2:°_ SiC_~e <br />9 <br />