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Ferroalloy Ores, Except Vanadium, major discharger, Summit County, Colorado. NPDES permit CO0000248 expired Mar 31, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Iron, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Molybdenum, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ 6.2 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, trivalent, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, trivalent, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | ≤ 2618 ug/L | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | ≤ 4738 ug/L | all year | 001 |
| Nickel, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 220 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Sulfide-hydrogen sulfide [undissociated] | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | 001 |
| Boron, total | 30-day average | report only (mg/L) | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 001 |
| pH | minimum | report only (SU) | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 002 |
| Solids, total suspended | maximum 7-day average | report only (mg/L) | all year | 002 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
Cited limits by parameter: Colorado's rules and the federal ones.
Same industry: the 30 Metal Mining permits in Colorado.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/CO0000248 · MCP: https://passage-data.com/mcp