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 8. Permit No. CO-0032115,
VI. TERMS AND CONDITIONS OF PERMIT
A. Effluent Limitations
In developing suitable effluent limitations, the Division must revi~e:w
al.l applicable standards and regulations and apply that which is more
stringent. This review includes, but is not limited to, the water
quality standard based effluent limitations, federal guidelines and
sraadarda (40 CFR Subchapter N) and State Effluent Regulations
(:L0.1.0). Such a review has been done far this facility. The
following limits will apply and are discussed below.
Table VI-1 -- Effluent Limits - 001, 008, 010
Parameter Limit
Flow, MGL Report a/
TSS, mg/1 35/70 b/
Total Iron, mg/1 3.5/7.0 ~5/
pH, s.u. 6.5-9.0 c/
pH, s.u. 6.5-9.5 d/
011 and Grease, mg/1 10 e/
Total Dissolved Solids, mg/1 Report e/
Settleable Solids, ml/1 0.5 f/
Rationale
NA
BPJ of SCT*
Best Available Technology
Water Quality Standards
See Discussion, Section V.B
State Effluent Regulations
Salinity Regulations
Eff. Limits for Precip.. Events
•Best Professional Judgment of Best Conventional Pollutant Control Technology
a/ 30 Day Average
b/ Average of daily values for 30 consecutive days/Daily mazimum
c/ Minimum-Mazimum
3/ Minimum-Mazimum. This range applicable only to discharge point 001, during
the months of June through September.
e/ Daily Maaimum
f/ 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.