PERMFILE103828

• Permit No: C1981024
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 7 NPDES PERMIT INFORMATION PART 1
• Media Type: D
• Archive: No

•
PART I
Page 11
Permit No. COC-850000
B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
3. Monitorine Requirements
In order to obtain an indication of the probable compliance or
noncompliance with the effluent limitations specified in Part I.B.1,
the permitcee shall monitor all effluent parameters at the following
frequencies.

a) Active Mining Oucfall(s)
Effluent Parameter Measurement Freauencv ~/ Samole Twe
Flow, MCD Weekly Instantaneous
or Continuous
pH, s.u. Weekly Grab
Oil and Grease, mg/1 Weekly Visual J
To cal Suspended Solids, mg/1 Monthly Grab
Total Iron, mg/1 Monthly Grab
Settleable Solids, ml/1 g/ Monthly Grab
Total Dissolved Solids, mg/1 J* Quarterly Grab
Total Phosphorus (as P), mg/1** Quarterly Grab
b) Post-Mining Oucfall(s)
Effluent Parameter Measurement Frecuency ~ Samole Twe
Flow, MGD Monthly Instantaneous
or Continuous
Settleable Solids, ml/1 g/ Monthly Grab
Oil and Grease, mg/1 Honchly Visual e/
pH, s.u. Honchly Grab
Total Dissolved Solids, mg/.1 J* Quarterly Grab
Total Phosphorus (as P), mg/1** Quarterly Crab
* Total Dissolved Solids (TDS) monitoring is required only for discharges to
the Colorado River Basin. See specific facility certification rationale
to determine whether TDS monitoring is required. "'
** Total phosphorus monitoring is required only for discharges to the Dillon
Reservoir drainage area (i.e., Ten Mile Creek, Snake River, Slue River,
and all other tributaries to the Dillon Reservoir) and for discharges co
the Upper Bear Creek drainage area. See specific facility certification
rationale co determine whether phosphorus monitoring is required.
See Part I.B.4, for footnotes