HYDRO26483

• Permit No: C1982056
• IBM Index Class Name: Hydrology
• Doc Date: 1/18/1995
• Doc Name: FINAL PERMIT COLO WASTEWATER DISCHARGE PERMIT SYSTEM NUMBER CO-0042161 TWENTY MILE COAL CO FOIDEL CR
• From: CDOH
• To: CYPRUS AMAX MINERALS CO
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

PART I
Page iii
Permit No. CO-0042161
• PART I
A. TERMS AND CONDITIONS
1. Effluent Limitations
Begiming no lour than the effective dau of this permit and lasting through January 31, 2000, the permi[tee is authorized to
discharge from outfall 001, the discharge of mine drainage and surface nmoff to Fish Creek; and 002, the discharge of domestic
effluent prior to enuring the Emerald Spring spoils spring.
In accordance with the Waur /Zttality Control Commission Regulations for Effluent Limitations, Section 10.1.3, and Regulations
for the Stau Discharge Permit Sysum, Section 6.9.2, 5 C.C.R. 1002-2, the permitted discharge shall not contain effluent
parameur concentrations which exceed the following limitations specified below or exceed the specified flow limitation.
(a) Outfall00l
EFfluent Parameter
Discharge Limitations
30-Dav Ave
Daily Max
Flow, MGD
Total Suspended Solids, mg/f
pH, s.u. (minimum-maximum)
Total Recoverable Iron, mg/[
Total Ammonia (ag N), mg/l
Dissolved Aluminum, mg/f
Oil and Grease, mg/f
WET, Chronic Lethality
• There shall be no discharge of floating solids.
(b) Effluent Limitations for Outfall 002
i) DesiAn Capacity (outfa110021
Report
35
N/A
0.5
Report
Report
N/A
N/A
Report
70
6.5-9.0
Report
Report
Report
10
See Part I.A.2.
The design capacity of this domestic wastewater treatment works is 0.015 MGD for hydraulic Flaw (30-day
average) and 31.2 Ib. BODS per day for orgmic loading (30-0ay average).
ii) Facilities Oceration (outfall 0021
The permittee shag at all times properly operau sad maintain all facilities and sysums of treatment and control
(and related appurtenances) which are installed or used by the permittce to achieve compliance with the
conditions of this permit. This provision requires the operation of back-up or auxiliary facilities or similar
sysums only whey necessary to achieve compliance with the conditions of the permit. Any sludge produced at
the wasuwaur treatment facility shall be disposed of in accordance with Stau and Federal guidelints end
regulations.
iii) Numeric Effluent Limitations For Outfall 002
Effluent Parameter Discharge Limitations
30-Dav Ave 7-Dav Ave Daily Max
Flow, MGD 0.015 N/A Report
5-Day Biochemical Oxygen Demand,
BODS), mg/f 30 45 N/A
Total Suspended Solids, mg/P 75 1l0 N/A
Fecal Coliform, No./100 mP 6000 12000 N/A
See Part I.C. for Definitions.
QiDBP eN/9J