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Bituminous Coal And Lignite - Surface, Nucla, Colorado. NPDES permit CO0000213 expired Mar 31, 2021; its limits still apply. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| June 2026 | Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum value | < 20 tox chronic | ≥ 100 tox chronic |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 012 |
| pH | maximum | ≤ 9 SU | all year | 012 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 012 |
| Solids, total suspended | maximum 7-day average | ≤ 70 mg/L | all year | 012 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 012 |
| Iron, total recoverable | 30-day average | ≤ 3000 ug/L | all year | 012 |
| Iron, total recoverable | 30-day average | ≤ 1000 ug/L | all year | 012 |
| Iron, total recoverable | daily maximum | ≤ 6000 ug/L | all year | 012 |
| Iron, total recoverable | daily maximum | ≤ 6000 ug/L | all year | 012 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 012 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 012 |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | all year | 012 |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | all year | 012 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 012 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 012 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 012 |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | 012 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.09 MGD | all year | 012 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 012 |
| Mercury, total low level | daily maximum | report only (ug/L) | all year | 012 |
| Sulfide-hydrogen sulfide [undissociated] | daily maximum | report only (mg/L) | all year | 012 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 012 |
| pH | minimum | ≥ 6.5 SU | all year | 013 |
| pH | maximum | ≤ 9 SU | all year | 013 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 013 |
| Solids, total suspended | maximum 7-day average | ≤ 70 mg/L | all year | 013 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 013 |
| Iron, total recoverable | 30-day average | ≤ 3000 ug/L | all year | 013 |
| Iron, total recoverable | daily maximum | ≤ 6000 ug/L | all year | 013 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 013 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 013 |
| Manganese, potentially dissolvd | 30-day average | ≤ 4120 ug/L | all year | 013 |
| Manganese, potentially dissolvd | 30-day average | ≤ 2618 ug/L | all year | 013 |
| Manganese, potentially dissolvd | daily maximum | ≤ 4738 ug/L | all year | 013 |
| Manganese, potentially dissolvd | daily maximum | ≤ 4738 ug/L | all year | 013 |
| Selenium, potentially dissolvd | 30-day average | ≤ 26 ug/L | all year | 013 |
| Selenium, potentially dissolvd | 30-day average | ≤ 2.3 ug/L | all year | 013 |
| Selenium, potentially dissolvd | daily maximum | ≤ 26 ug/L | all year | 013 |
| Selenium, potentially dissolvd | daily maximum | ≤ 18 ug/L | all year | 013 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 013 |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | 013 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.44 MGD | all year | 013 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 013 |
| Mercury, total low level | 30-day average | report only (ug/L) | all year | 013 |
| Sulfide-hydrogen sulfide [undissociated] | daily maximum | report only (mg/L) | all year | 013 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 013 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 013 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | Mar | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | Jun | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | Sep | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | Dec | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | Mar | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | Jun | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | Sep | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | Dec | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 tox chronic | all year | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | Mar | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 tox chronic | Jun | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 tox chronic | Sep | 013 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | Dec | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | Mar | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | Jun | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | Sep | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | Dec | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | Mar | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | Jun | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | Sep | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | Dec | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 100 tox chronic | all year | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | Mar | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 100 tox chronic | Jun | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 100 tox chronic | Sep | 013 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | Dec | 013 |
| pH | minimum | ≥ 6.5 SU | all year | 016 |
| pH | maximum | ≤ 9 SU | all year | 016 |
| Solids, total suspended | 5-day average | ≤ 35 mg/L | all year | 016 |
| Solids, total suspended | maximum 7-day average | ≤ 70 mg/L | all year | 016 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 016 |
| Iron, total recoverable | 30-day average | ≤ 3000 ug/L | all year | 016 |
| Iron, total recoverable | 30-day average | ≤ 1000 ug/L | all year | 016 |
| Iron, total recoverable | daily maximum | ≤ 6000 ug/L | all year | 016 |
| Iron, total recoverable | daily maximum | ≤ 2000 ug/L | all year | 016 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 016 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 016 |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | all year | 016 |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | all year | 016 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 016 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 016 |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | 016 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 3.123 MGD | all year | 016 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 016 |
| Mercury, total low level | daily maximum | report only (ug/L) | all year | 016 |
| Sulfide-hydrogen sulfide [undissociated] | daily maximum | report only (mg/L) | all year | 016 |
Cited limits by parameter: Colorado's rules and the federal ones.
Same industry: the 19 Coal 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/CO0000213 · MCP: https://passage-data.com/mcp