HYDRO29975

• Permit No: C1981022
• IBM Index Class Name: Hydrology
• Doc Date: 11/12/1991
• Doc Name: RATIONALE FOR PUBLIC NOTICE
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

PART I
Page la of 19
Perms[ No. CO-0000132
A. TERMS AND CONDITIONS
1. Effluent Limitations - Discharge points 003, 004, 005, 006, 007, 009
and 010
Beginning immediately and lasting [hrough October 31, 1996, the
permittee is authorized to discharge within the limitations specified
below, from the following outfall serial numbers (see Figure 1):
003, sediment
004, sediment
005, sediment
006, sediment
007, sediment
009, sediment
010, sediment
pond outfall
pond outfall
pond outfall
pond outfall
pond outfall
pond outfall
pond outfall
to Elk Creek
to Elk Creek
to Elk Creek
to Elk Creek
to Hubbard Creek
to Elk Creek
to Sanborn Creek
Parameter
30-day avg. a/ Daisy Max. c/
Flow, MGD Report ATA
Total Suspended Solids, mg/1 35 70
Total Iron, mg/1 3.5 7.0
Settleable Solids, ml/1 NA Report
Total Dissolved Solids, mg/1 NA Report
pH (standard units) shall remain between 6.5 and 9.0 c/.
Oil and grease shall not exceed 10 mg/1 c/ in nay grab sample nor shall there
be a visible sheen f/.
Any discharge or increase in the volume of a 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 comply with the following limitations subject to burden of
proof requirements described in Part I.A.2.
Parameter Daily Maximum c/
Flow, MGD Report
Settleable Solids, ml/1 j/ 0.5
Total Dissolved Solids, mg/1 Report
pH (standard units) shall remain between 6.5 and 9.0 c/.
Oil and grease shall not exceed 10 mg/1 c/ in any grab sample nor
shall there be a visible sheen f/.
See part I.C. for Footnotes