PERMFILE137581

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 8/20/2004
• Section_Exhibit Name: Exhibit 11 Colorado Discharge Permit - NPDES
• Media Type: D
• Archive: Yes

PARTI
Page No. 3
Permit No. CO-0044776
A.
OF EFFLUENT LIMITATIONS
1. Effluent Limitations
Beginning no later than the effective date of this permit and lasting through February 29 2004, the permittee is
authorized to dischazge from outfalls 001 and 003 -the discharges of surface runoff; and 002 -the discharge of
surface runoff and/or mine drainage -- all prior to entering Deer Trail Ditch.
In accordance with the Colorado Water Quality Control Commission Regulations for Effluent Limitations, Section
62.4 (5 CCR 1002-62), and the Colorado Discharge Permit System Regulations, Section 61.8(2), (5 CCR 1002-61),
the permitted dischazge shall not contain effluent parameter concentrations which exceed the following limitations
specified below or exceed the flow limitation, where specified.
a. Outfalls 001 and 003
Effluent Parameter Discharge Limitations
30-Day Avg Daily Max
Flow, MGD Report Report
Total Suspended Solids, mg/Q 35 70
Total Iron, mg/Q 3.0 6.0
Settleable Solids, mQ/Q Report Report
Oil and' Grease; mg/Q Report 10
pH, s.u. (minimum-maximum) N/A 6.5-9.0 .
ALTERNATE LIMITATIONS
Any dischazge or increase in the volume of a dischazge caused by precipitation within any 24-hour period less than or
equal to the 10-year. 24-hour prime ipitation event (or snowmelt of equivalent volume) may comply with Ute following
limitations subject to burden of proof requirements described in Part I.A.2.
PART I
•
Effluent Parameter Discharge L imitations
• 30-Day Ave Dam Max
Flow, MGD Report Report
Total Suspended Solids, mg/Q Report Report
Total Iron, mg/Q Report Report
Settleable Solids, mQ/Q Report 0.5
Oil and Grease, mg/Q Report 10
pH, s.u. (minimum-maximum) N/A 6.5-9.0
Any dischazge or increase in volume of a dischazge caused by precipitation within any 24-hour period ereater than the
10-year 24-hour event (or series of storms or snowmelt of equivalent volume) may comply with the following
limitations subject to burden of proof requ irements described in Part I.A.2.
Effluent Parameter Discharge L imitations
30-Day Ave Dail a
Flow, MGD Report Report
Total Suspended Solids, mg/P Report Report
Total Iron, mg/Q Report Report
Settleable Solids, mQlQ Report Report
Oil and Grease, mg/¢ Report 10
pH, s.u. (minimum-maximum) N/A 6.5-9.0
See Part I.C. for Definitions.