HYDRO29812

• Permit No: C1981041
• IBM Index Class Name: Hydrology
• Doc Date: 6/8/1992
• Doc Name: RATIONAL FOR PUBLIC NOTICE POWDERHORN COAL CO
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

PART I
Page la of 19
Permit No. CO-0027146
A. TERMS AND CONDITIONS
1. Effluent Limitations For Outfalls 001. 002 anct 004
Beginning immediately and lasting through July 31, 1997, the permittee
is authorized to discharge within the limitations specified below,
from outfalls 001, 002 and 004.
In accordance with the Water Quality Control Commission Regulations
for Effluent Limitations, Section 10.1.3, and State Discharge Permit
System Regulations, Section 6.9.2, the permitted discharge shall not
contain effluent parameter concentrations or daily mass pollutant
Loadings which exceed the following limitations.
Effluent Parameter
Flow, MGD
Total Suspended Solids, mg/1
Total Iron, mg/1
pH, standard units (minimum-maximum)
Oil and Grease, mg/1 (No visible sheen)
Toca1 Dissolved Solids, mg/1
Whole Effluent Tcxicity, Acute
Whole Effluent Toxicity, Chronic
Thru June 30. 1995
Discharee Limitation
Maximum Concentration
30-Day Ave.
Report
35
3.5
N/A
N/A
Report
N/A
N/A
Daily Max.
Report
70
7.0
6.5-9.0
10
N/A
Repor*_
Report
2. Effluent Limitations For Outfalls 005 006 007 008 009 010 011
012. 013 and 014
Beginning immediately and lasting through Ju1~~ 31, 1997, the permittee
is authorized to discharge within the limitations specified below,
from outfalls serial numbers 005, 006, 007, 008, 009, 010, 011, 012,
013 and 014.
Effluent Parameter
Flow, MGD
To cal Suspended Solids, mg/1 J
To cal Iron, mg/1 J
pH, standard units (minimum-maximum)
Oil and Grease, mg/1 (No visible sheen)
Total Dissolved Solids, mg/1
Discharee Limitation
Maximum Concentration
30-day avv.
Report
35
3.5
N/A
N/A
Report
Dai1v Max. J
N/A
70
7.0
6.5-9.0
LO J
N/A
Sze Part I.C. for Footnotes