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COLOR.-IDO DEP.IRT~NE;VT OF PUBLIC HEtLTH.I~VD E:VVIRON,LIEr\T, Lb'urer ~)uatrn Contra( Dtwswn <br />Runanu(e - ; I mendmeru rVn. !. Page ~, Pdnnit rVo. CO-0000221 <br />? W'nter Oua(iry Band Ejf(rrent Linrtruinns: A(l srs of die rtew nutfidls dtsrimr,ge to Snge Creek. D!v Gee.E or <br />• their tributaries. all aj which are rnbumrv ro the Yrunpu River. 77~ese waters and within segmam !2 cf r:~e <br />Yampa River sub-betsui of dee Upper Cnlnr:u(a River basin. T'rus stgrnenr hits no metals er aquatic fife <br />standards other than pH Snge Creek. Dn~ Creek ar~d triburares hrrve name and cltruruc [ow J7ows nj,ero. <br />The nunimum distnncr from these outfnlls m die Yanipa River a ten mites. T]te }'mripa River ut the vianrrv irus <br />a subsran«al Jlow rlutt would dilute any flo,v from segment (?. On this 6us+s, it rs very un(rkely that these <br />discharges could impact the Yampa River. Therefore, the Droisian has determirtdrl dart icater yiraliry based <br />EjJluent lintitntinns (nriidr than pHJ are nor applicable for this amendment <br />~. Discussion ejEfJ(uent Lirnirations: <br />n) Reeulnnoris (or Ef~uenr Limitation r: Tile Regulations for EJj`luent Limimriau (~ CCR 1002-62) apply ro the <br />conventional pollutants For these outfhtls, die limitations for Or( and Grease are based on this regu[atiort. <br />b) Applicable Federal E~uent Guidelines and Srmtdards: The federal gttideliaes which apply m this Npe of <br />jaciliry are jowtd «nder 40 CFR 434, tided Con( ~Yfinin~Pomt Sorirre E-(l7trenr Guidelines The (imitations <br />which apply are: <br />Table V/-3 -- Federal Standards (40 CFR 434) <br />Parameter Limitations <br />30 Day AvR Dairy hlas. <br />pH, s. u. (minimum -maximum) ---6.0 - 9.0--- <br />Total Suspended Solids, ntg/P* 35 70 <br />Total Iron, mg/P* <br />• BAT * ` 3.3 7.0 <br />NSPS* * * 3.0 6.0 <br />Settleable Satids, mFIP* NIA D.S <br />• 7Aese parameters subject to Burden of Proof Requirements. see nest section <br />`• Besr Available Technotngy -apples ro those facitiries atready corssrrucred <br />'•• Nrw Source Performanre Sram(ards -applies ro those fanbries cansrruned afrer 5/4/84 <br />Alternate Limitation Burden ojProojRequiremenrs: /n conformance wilt 40 CFR 434.63, the permittee has <br />rlie burden of proof w/ten regttesiing relief from total suspended solids (TSS), rota( iron and/or settleable <br />solids limitations, as appropriate. The imenr of this regulation is m afford reliejonly when needed dire to a <br />volume of water generated by n specific storm event,. it is not intended to be aeitomatica![y applied to al! <br />discharges caused by precipitation, nor to be used to discharge volumes in e.ccess of that generated by rite <br />storm event. Orr this basis, relief slinll be granted only when necessary and shit!! riot 6e granted when the <br />permittee l:as control over the discharge, enabling them to meet rite primary timimtions. The pernti«ee <br />s/toitld endeavor to meet the primary lintitntions }v/tenever possible. All mantra! dewatering of ponds dint <br />are equipped with nuronraric dewaterirtg systems must meet TSS and tom! iron (imitations. if a pond has <br />only manual dewnrering capability, relief is nvai[able only to the eztertr required to regain necessary <br />srabiliry and capacity. 77te Division sitalf have final attthoriry in determining whether relief is granted. As <br />part of this determinnnon, the Division shit!! evaluate whether die permirtee could have controlled the <br />discharge in sudi n rnnnner [hat primary limimtions could have been met. <br />IJ Fnr rnirdall ro waive TSS and rota( iron (irnimrions, it is necessary to demonstrate that discharge <br />ocatrred wathui 43 hours after meastuable precipuarion has sropperl. To }vnive settleable solids <br />limimnons, it is necessary to prove that discharge occurred within 48 hours after precipitation greater <br />than the IO-bear, Z4-hrnv event /ins stopped. , <br />• <br />