HYDRO20784

• Permit No: C1981047
• IBM Index Class Name: Hydrology
• Doc Date: 9/26/1985
• Doc Name: AUTHORIZATION TO DISCHARGE UNDER THE COLO DISCHARGE PERMIT SYSTEM
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

PART I
• Page la of 19
Permit No.: CO-0033553
A. TERt4S A[ID CONDITIONS
1. Effluent Limitations
Beginning immediately and lasitng through June 30, 1990 the permittee is
auuhorized to discharge within the Limitations specified below, from
outfall(s) serial number(s) 001, 002, 003, a[ the pond ou[falls as shown
in Figure 2.
•
a) Effective during periods of no precipitation
Effluent Parameter Discharge Limitations
Maximum Concentration
30-day avg, a/ Daily Max. c/
Flow - (MGD) N/A N/A
Total Suspended Solids (mg/1) 35 70
Total Iron (mg/1) 3.5 7.0
Salinity N/A N/A
pH - (Standard Units) shall remain between 6.5 and 9.0 c/.
Oil and grease shall not exceed 10 mg/1 c/ in any grab sample nor shall there
be a visible sheen.
b) Effective during periods of precipitation less than or equal to the
10-year, 24-hour event for this facility.
Any discharge or increase Sn the volume of a discharge caused by
precipitation within any 24-hour period less than or equal to the
10-year, 24-hour precipitation event (or snowmelt of equivalent
volume) may comply with the following limitations instead of the
limitations of item a) immediately preceeding or item c)
immediately following.
Effluent Parameter
Discharge Limitations
Maximum Concentration
Daily Maximum c/
Flow-(MGD) N/A
Settleable Solids (ml/1) j/ 0.5
Salinity N/A
pN -'(Standard Units) shall remain between 6.5 and 9.0 c/.
Oil and grease shall not exceed 10 mg/1 c/ in any grab sample nor shall there
be a visible sheen.
• See Part I.C. for Footnotes
Code: 1 - 7 Date: 9 - 84
O