_ENFORCEMENT - C1981017 ‎(5)‎

• Permit No: C1981017
• IBM Index Class Name: Enforcement
• Doc Name: Bid Documents ‎(IMP)‎ TDN X-90-02-370-001- TV2
• Media Type: D
• Archive: No

PART I
Page if of 19
Permit No. CO-0000396
A. TERMS AND CONDITIONS: (Continued)
11. Effluent Limitations (Outfall 016)
Any discharge or increase in volume of a discharge caused by
precipitation within any 24-hour period greater than the 10-year,
24-hour event (or series of storms or snowmelt of equivalent volume)
may comply with the following limitations subject to burden of proof
requirements described in Part I.A. 2.
Flow-(MGD) - monitoring only per Part I.B.1.
Total Dissolved Solids - monitoring only per Part I.B.1.
pH - (Standard Units) shall remain between 6.5 and 9 .0 c/.
Oil and grease shall not exceed 10 mg/l c/ in any grab sample nor
shall there be a visible sheen.
12. Additional Conditions-effective at all times for all outfalls
There shall be no discharge of floating solids or visible foam in
other than trace amounts. The discharge shall not contain any
sanitary wastewaters from toilets or related facilities, or other
pollutants not associated with active mining operations. There shall
be no land application of wastewater, other than for dust control,
without the previous authorization of a specific discharge point.
13. Burden of Proof Requirements (Outfalls 001, 006, 008, 009, 010 , 013,
014 , 015, 016 , 017 , 018, 020 , 021, 022, 023 , 024 and 025)
The permittee shall have the burden of proof,when requesting relief
from total suspended solids (TSS) , total iron and/or settleable solids
limitations.
For rainfall, to waive TSS and total iron limitations, it is necessary
to prove that discharge occurred within 48 hours after measurable
precipitation has stopped. In addition, to waive settleabl# solids
limitations, it is necessary to prove that discharge occurred within
48 hours after precipitation greater than the 10-year, 24-hour event
has stopped.
For snowmelt, to waive TSS and total iron limitations, it. is necessary
to prove that discharge occurred within 48 hours after 'pond inflow has
stopped. In addition, to waive settleable solids limitations, it is
necessary to prove that discharge occurred within 48 hours after pond
inflow volume greater than the 10-year, 24-hour event has stopped.
The Division shall determine the adequacy of proof.