2004-06-29_PERMIT FILE - C1981038 ‎(7)‎

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2004
• Doc Name: Colorado Discharge Permit ‎(NPDES)‎
• Section_Exhibit Name: Volume 7 Exhibit 11 Paonia Loadout
• Media Type: D
• Archive: No

PARTt
Page No.'4
Permit No. COG-8500J0
B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
1. Effluent Limitations
a. Active Minine Outfalls
ACTIVE MINING PRIMARY LIMITATIONS
•
Flow, MGD Report Report
•Total Suspended Solids, mg/1 35 70
Total Iron, mg/1
Existing Sources 3.5 7.0
New Sources 3.0 6.0
Total Manganese, mg/1 2.0 4.0
•Senleable Solids, ml/1 Report Report
pH, s.u. N/A 6.5-9.0
Oil and Grease, mg/1 N/A 10
Total Dissolved Solids, mg/I•• Report Report
Total Phosphorus (as P), mg/1••• Report Report
ACTIVE MINING ALTERNATE L]MITATIONS -
•Total Suspended Solids, mg/1
Total Iron, mg/1
Discharges from mountaintop remova4 and steep slope areas.
All other discharges covered undo this permit
Total Manganese, mg/1
•Settleable Solids, mlfl
pH, s.u.
Oil and Grease, mg/1
Total Dissolved Solids, mgQ+• .
Total Phosphonas (as P), mg/1•r
Report Report
Report 7.0'u
Report Report
Report Report
Report 0.5
N/A 6.5-9.0
N/A 10
.Report Report
Report Report
These alternative limitations pertain to storm everiu less than a 24hour period, less than or equal to a two-year, 24-hour precipitation event (or snowmelt of
equivalrnt volume) only.. -
•Total Suspended Solids, mg/1 Report Report
Total Iron, mg/1 Report Report
Total Manganese, mg/1 Report Report
•Settleable Solids, mUl Report Report
pH, s.u. N/A 6.5-9.0
Oil and Grease, mg/i N/A 10
Total Dissolved Solids, mg/l•• Report Report
Total Phosphorus (as P), mgQ••• Report Report
•
If discharge is to land, TSS and settleable solids monitoring is waivcd.••Appliu only to drainages within flu Colorado Rives Basin
'•ADplies only to drainages dnectly about Chatfield Reservoir, Chary Creek Resmoir, Dillon Rescrvoiq or Upper Bear Creek
Any discharge or increase in the volume of a discharge caused by precipitation within any 24-hourperiod less than or equal to the
10-veaz. 24-hottrprecioitation event (or snowmelt of equivalent volume) >~ comply with the following limitations -- subject to
burden of proof requirements described in Part LB.l.d).
Any discharge or increase in the volume of a discharge caused by precipitation within any 24-hour period er'eater than the 10-year,
24-hour precipitation event (or snowmelt of equivalent volume) may comply with the following Limitations -- subject to burden of
proof requirements described inPart LB.l.d).