HYDRO26625

• Permit No: C1981010
• IBM Index Class Name: Hydrology
• Doc Date: 6/3/1991
• Doc Name: RATIONALE FOR PUBLIC NOTICE
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

' ~ COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division
Rationale - Page 9. Permit No. CO-0032115.
VI. TERMS AND CONDITIONS OF PERMIT
Table VI-2 - Effluent Limits - 012, 013, 014 (new)
Parameter
Limit
Rationale
Flow, MGD Report a/
TSS, mg/1 35/70 b/
Total Iron, mg/1 3.0/6,0 ~6/
pH, s.u. 6.5-9.0 c/
011 and Grease, mg/1 10 d/
Total Dissolved Solids, mg/1 Report d/
Settleable Solids, ml/1 0.5 e/
NA
New Source Performance Stds
New Source Performance Stds
Water Quality Standards
State Effluent Regulations
Salinity Regulations
Eff. Limits for Precip. Events
a/ 30 Day Average
b/ Average of daily values for 30 consecutive days/Daily maximum
c/ Minimum-Maximum
3/ Daily Maximum
e/ Effective during periods of precipitation Less than or equal to the
10-year, 24-hour precipitation event for this facility, subject to burden
of proof requirements as described in permit.
Table VI-3 - Effluent Limits - 002, 003, 005, 006, 009, 011
Parameter
Limit
Rationale
Flow, MGD Report a/
TSS, mg/1 35/70 b/
Total Iron, mg/1 3.5/7.0 b/
pH, s.u. 6.5-9,0 c/
pH, s.u. 6.5-9.5 d/
011 sad Grease, mg/1 10 e/
Total Dissolved Solids, mg/1 Report e/
Whole Effluent Toxicity, Acute Report
NA
BPJ of BCT*
Best Available Technology
Water Quality Standards
See Discussion, Section V.B
State Effluent Regulations
Salinity Regulations
See Discussion
*Best Professional Judgment of Best Conventional Pollutant Control Technology
a/ 30 Day Average
T/ Average of daily values for 30 consecutive days/Daily maximum
c/ Minimum-Maximum '
d/ Minimum-Maximum. This range applicable only to discharge points 002 and
005, during the months of June through September.
e/ Daily Maximum