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COLORADO DEPARTMEM OF PiIBL1C HEALTH AND ENVIRONMENT, Water Quality Control Division <br />Rationale -Page 4, Permit No. CO-1,144776 <br />2. State Sampline: There are no state sampling results available for this jaciliry. <br />VI. TERMS AND CONDITIONS OF PERMIT <br />A. Determination of Effluent Limitations <br />I. E;j(luent Limitations: In developing suitable effluent limitations, the Division must review all applicable <br />standards and regulations and apply those which are mare stringent. This review includes, bur is not limited <br />to: the water quality standard based efJ'tuen[ limitations, federat guidelines and standards (40 CFR Subchapter <br />N) and the Regulations for Effluent Limitations (Regulation No. 62). Such a review has been done for this <br />facility. The limitations in Table VI-I will apply and are discussed in Section VI.A.2. <br /> <br />t aau rt-t - t:~~taeru t,unuaaarRS~vr va9aus vvt-vw <br />>:...::. :..::; :::::.:.. ':>:;. •:::;.'.::'.:::::';.:; Ihschargz Eimitgtions.::::..'. ,..' ::: .... ... :..'; .:::':::'; .,'::.:'-:::: `:. <br />;' ..::: . <br />,... :. <br />-....... Maiiiitum.C'ancendiQ[taris ::::::'' .::::::::...:::' ::;::'•<:::':s:':`.::;.:.:::::::::. <br />rParamuo : ; :.:::.:: ': -..; .:::...::::.::..:'..::::': -: ':30-Diiv'.Avr::;;.;'>. Dailr:bl'ar::.::.:.:::; :.:: ,;': `R6aanale .. <br />Flow, MGD <br />Total Suspended Solids, mg/P' <br />Total Iran, mg/t* <br />Settleable Solids, mP/P' <br />Oil and Grease, mgfP <br />pH, s. u. (minimum-maximum) <br />Total Dissolved Solids, mg/P <br />Report Repast Design Capacity <br />35 70 New Source Performance <br /> Standards <br />3.0 6.0 New Source Performance <br /> Standards <br />N/A 0.5 Best Available Technology <br />NJA 10 State E_Q`luent Regulations <br />N/A 6.5-9.0 Water Quality Standards <br />Report Report Salinity Regulations <br />Whole Effluent Toxicity, Acute (Outfa/l N/A LC,~> 100% State Permit Regulations <br />002 only-see VLA.2.~) <br />• Toiat Suspended Solids, Total Iron and Settleable Solids limitations are subject to burden of proof <br />requiremen[s -see section VI.A.2.b). For outfal! 002 -when the majority of the flow being discharged at arty <br />time is from mine drainage, this relief will not be available. <br />2. Discussion of~:fjluent Limitations <br />a} $egulations for E,Rluent Limitations: The Regulations for E,~Iuent Limitations (Regulation No. 62), apply to <br />the conventional pollutants. For this facility the limitations for Oil and Grease are based on this regulation. <br />b) Bpolicable Federal Fflluent C.aidelinec and Srandardvc; The facility is subject to 40 CFR Part 434, ~ygl <br />jrfininq Point Source F/Ruent C.uideline~. The limitations That apply to the discharges of surface runoff and <br />mine drainage at this jaciliry are shown in Table VI-2. This facility is considered to be a new source under <br />the regulatons. <br />• <br />