2008-08-06_PERMIT FILE - C1991078

• Permit No: C1991078
• IBM Index Class Name: Permit File
• Doc Date: 8/6/2008
• Section_Exhibit Name: EXHIBIT 13 APPLICATION FOR A COLO DISCHARGE PERMIT
• Media Type: D
• Archive: No

PART II
Page No. 8
Permit No. COG-850000
Limitations

Parameaer
30-Day
7-Day
Daily
Rationale Monitoring
Frequency t Sample
Type
Avg. Avg. Max.
---•--------------------General Permit Requirements-----------____w________-__-
Flow, MGD Report NA Report Discharge Evaluation Continuous / z Recorder /
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 a
---------------------Federal Efflu ent Limi tation Guidelines----------------------------
Total Suspended Solids, mg/1 35 NA 70 Federal ELG Weekly Grab
Total Iron, mg/1
Existing Sources (before

5/4/84) 3.5 NA 7.0 Federal ELG Weekl
y Grab
New Sources (after 5/4/84) 3.0 NA 6.0
Settleable Solids, rrll/1 Report NA 0.5 Federal ELG Weekly Grab
---- ---- -- -------Site Sp ecific Limitations-------------------- ~__--
Total Dissolved Solids, mg/1 * Report NA Report Salinity Regulations Quarterly a Grab
Total Phosphorus (<is 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 Toy,;icity (WET)
Chronic Stat Diff and IC25 > IWC State Permit Limitations Quarterly 3 Grab/Test
Acute LC50 > 100% State Permit Limitations Grab
Footnotes 1-4, * , ** ,and *** can be found under Part LB.1 and Part LB.2
5. :Effluent Limitations and Monitoring Requirements - Acid or Ferruginous Mine Drainage
The above category is subject to 40 CFR Part 434 Subparts C (Acid or Ferruginous Mine Drainage). At a minimum, the
following limitations may apply as outlined in these subparts.
Limitations
Parameter 30-Day 7-Day Daily Rationale Monitoring[
Fre
uenc Sample
T
Avg. Avg. Max. q
y ype
------ ------ --General Pe rmit Requirements- ----------------__ _-_____
Flow, MGD Report NA Report Discharge Evaluation Continuous / z 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 Efflue nt Limitation Guidelines-------------------------_____
Total Suspended So ids, mg/1 35 NA 70 Federal ELG Weekly Grab
Total Manganese, m.g/1 2.0 NA 4.0 Federal ELG Weekly Grab
Total Iron, mg/1
Existing Sources (before 5/4/84) 3.5 NA 7.0 Federal ELG Weekly Grab
New Sources (after 5/4/84) 3.0 NA 6.0
Settleable Solids, ml/1 Report NA 0.5 Federal ELG Weekly Grab
----------_~._-------___---Site Specific Lim itations-------------------------------__-~-
Total Dissolved Solids, mg/1 * Report NA Report Salinity Regulations Quarterly a Grab
Total Phosphorus (a;s 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 (:oncern Various NA Various ~ Water Quality Standards Weekly Grab
Whole Effluent Toxicity (WET)
Chronic Stat Diff and IC25 > IWC State Permit Limitations Quarterly 3 Grab/Test
Acute LC50 > 100 % State Permit Limitations Grab ~
Footnotes 1-4, * , ** , ancf *** can be found under Part I.B.1 and Part I.B.2