2008-09-15_PERMIT FILE - C1992081

• Permit No: C1992081
• IBM Index Class Name: Permit File
• Doc Date: 9/15/2008
• Doc Name: CDPS Permit
• Section_Exhibit Name: Tab 13 Appendix 13-1
• Media Type: D
• Archive: No

PART R
Page No. 5
Permit No. COG-850000
annual precipitation of 26.0 inches or less.

The above categories are subject to 40 CFR Part 434 Subparts B (Coal Preparation Plant and Associated Areas), D
(Alkaline Mine Drainage) and F (Miscellaneous Provisions). These limitations also apply to Western Coal Mi ning
Operations. The following limitations apply as outlined in these subparts.
Limitafions
Parameter 30-Day 7-Day Daily Rationale Monitoring
I
Fre
uenc Sample

T
e
.Avg. Avg. Max.
q
y,
yp
________~_________~_~_______General Permit Requirements----------__~__________ ____w__
Flow, MGD Report, NA Report Discharge Evaluation Continuous / 2 Record2 r /
Instantaneous In-situ
pH, s.u. N/A NA 6.5-9.0 Water Quality Standards Weekly Grab
Oil and Grease, mg/1 N/A NA 10 State Effluent Regulations Weekly Visual s
______~_~_~_______~___~Federal Effluent Limitation Guidelines--___~_~________ __________
Total Suspended Solids, mg/1 35 NA 70 Federal ELG Weekly Grab
Total Iron, mg/1
Existing Sources (before 3.5 NA 7.0 Federal ELG
5/4/84) Weekly Grab
3.0 NA 6.0
New Sources (after 5/4/84)
Settleable Solids, ml/1 Report NA 0.5 Federal ELG Weekly Grab
_~_____~_____-_~______________Site Specific Limitations--____~____-_____________ __~_____
Total Dissolved Solids, mg/1 * Report NA Report Salinity Regulations Quarterly' Grab
Total Phosphorus (as P), mg/1 ** Report NA Various Control Regulations Monthly Grab
Total Recoverable Iron, ug/1 1000 NA NA Water Quality Standards Weekly Grab
Other Pollutants of Concern Various NA Various Water Quality Standards Weekly Grab
Whole Effluent Toxicity (WET)
Chronic Stat Dill and IC25 > IWC State Permit Limitations
Acute LC50 > 100% State Permit Limitations Quarterly 3 Grab/Test
Grab
Footnotes 1-4, * and ** can be found under Part I.B.1.
*** This limitation will apply and will substitute for the 30-day average total iron limit based upon the ELG, when a total recoverable iron standard is applicable to
the stream segment.
ALTERNATE LIMITATIONS FOR ALKALINE MINE DRAINAGE AND
COAL PREPARATION AND ASSOCIATED AREAS
Any discharge or increase in the volume of a discharge from an above ground alkaline none (or an underground
alkaline mine where the effluent is commingled with other categorical wastewater prior to 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 substitute the following limitations for these specific parameters only, subject to burden of
proof requirements described in Part I.B.6.

Parameter

:. Limitations

30-Day

7-Day

Daily Rationale
Morritoring

Frequency
Sample ;'

Type
'-
- Avg. Avg. Max... .
_~_____________________________Federal Efflu ent Limi tation Guidelines----------------- -------------
Total Suspended Solids, mg/1 Report NA Report Federal ELG Weekly Grab
Total Iron, mg/1
Existing Sources (before
5/4/84) Report NA Report Federal ELG Weekly Grab

New Sources (after 5/4/84) Report NA Report
Any discharge or increase in the volume of a discharge from an above rg ound alkaline mine (or an underground
alkaline mine where the effluent is commingled with other categorical wastewater prior to discharge), caused by
precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of
equivalent volume) ~ substitute the following limitations for these specific parameters only, subject to burden of
proof requirements described in Part I.B.6.