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HYDRO22023
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Entry Properties
Last modified
8/24/2016 8:43:10 PM
Creation date
11/20/2007 2:39:45 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980004
IBM Index Class Name
Hydrology
Doc Date
6/25/2004
Doc Name
NPDES Permit
Permit Index Doc Type
NPDES
Media Type
D
Archive
No
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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division <br />s Rationale -Page 3, Permit No. CO-0038342 <br />Y. TERMS AND CONDITIONS OF PERMIT <br />A. Determination of Effluent limitations <br />1. EHluenl Limitations. The effluent limitations contained in Tables VI-1 and VI-2 will apply and are discussed in Section <br />VI.A.2, <br />Table VI-1-Effluent Limits - Outfa[l OOI <br />~.'"''~ Parameter ':. .: ;: ~~ -°~ ` Lrtiiif _ :'"` '° t;.-. -` '+~Ratioria7e"~'. - <br />Flow, MGD Re ort/Re ort c Dest n Ca acit <br />TSS, m /1 35/70 c, d Federal Guidelines BAT) <br />pH, s.u. 6.5-9.0 b Water Quality Standards <br />Oil and Grease, m /1 10 a State Effluent Re ulations <br />TDS, m /l Re ort/Report c Salinity Re ulations <br />Settleable Solids, ml/1 Re ort/0.5 c, d Federal Guidelines <br />Iron, Total, u /1 3,500/7,000 c, d Federal Guidelines (NSPS <br />Table VI-2 -Effluent Limits - Outfal[ 002 <br />~~j"~z',zt~ Parameter' ^} ~:~?, •;-°f'~:~:~trr:et~k` ~.,a~: t- ~ `j., a '2 " Ra;tonale ~ r:,r <br />.rr: r <br />Flaw, MGD Re ort/Re ort c Desi n Ca aeit <br />TSS, m /1 35/70 c Federal Guidelines (BAT) <br />H, s.u. 6.5-9.0 b Water Quality Standards <br />Oil and Grease, m /d 10 a State E uent Re ulations <br />TDS, m /! Re ort/Re ort a Salinity Re ulations <br />WET, Chronic Statistical Difference orIC25>IWC a Stnte Permit Regulations <br />Iran, Total, u /l 3500/7000 c Federal E uent Guidelines <br />° Daily Maximum <br />5 Minimum-Maximum <br />` 30-day average/dai[y maximum ;TDS limit is 1 ton/day <br />° See section VLA,2.c. jot applicability <br />2. Discussion of Effluent Limitations <br />a. Dil and Grease: The Regulations for Effluent Limitations (Regulation No. 6Z) include effluent limitations that apply <br />to all discharges of wastewater to State waters. These regulations are applicable to the discharges from the <br />McGlone Canyon Mine WWTF. The pH limitations specified in the Regulations for Effluent Limitations are not the <br />most stringent and thus are not used as discussed below. <br />b. QH: This parameter is limited by Water Quality Standards as the water quality standards of 6.5-9.0 s.u. range are <br />more stringent than those specified under the Regulations for Efluent Limitations . <br />c. Aonlicable Federal Effluent Guidelines and Standards The federal guidelines which apply to this type of facility <br />are found under 40 CFR 434, titled Coal Mining Point Source Effluent Guidelines. The limitations which apply are: <br />Table VI-3 -Federal Standards (40 CFR 434 <br />Parameter Limitations <br />30 Day Avg Daily Max: <br />pH, s. u. (minimum -maximum) --ti.0- 9.0-- <br />Total Suspended Solids, mg/1* 35 70 <br />Totallron, mgA* <br />BAT** 3.5 7.0 <br />NSPS* * * 3.0 6.0 <br />SetlleableSolidr, ml/1* N/A 0.5 <br />* These parameters subjec[ to Burden ojProojRequirements, see next section <br />** Best Available Technology -applies to those ponds already constructed <br />** * New Source Performance Standards - applies to those ponds constructed after 5/4/84 <br />f,nsr Revisrd.~ 6/9/2004 <br />
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