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Bituminous Coal - Underground, Garfield County, Colorado. NPDES permit CO0038342 expired Aug 31, 2020; its limits still apply. Last 12 months: no values over a limit, 411 required values missing, 42 of 52 reports late. 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 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 001 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 3500 ug/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1000 ug/L | all year | 001 |
| Iron, total recoverable | daily maximum | ≤ 7000 ug/L | all year | 001 |
| Iron, total recoverable | daily maximum | ≤ 7000 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 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .216 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total low level | 30-day average | report only (ug/L) | all year | 001 |
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | minimum value | report only (%) | all year | 001 |
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | minimum value | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Pimephales promelas | minimum value | report only (%) | all year | 001 |
| LC50 Static Renewal 96Hr Acute Pimephales promelas | minimum value | ≥ 100 % | all year | 001 |
| Conductivity | 30-day average | report only (dS/m) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Bicarbonate ion- [as HCO3] | 30-day average | report only (mg/L) | all year | 002 |
| Bicarbonate ion- [as HCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Calcium, total recoverable | 30-day average | report only (mg/L) | all year | 002 |
| Calcium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Magnesium, total recoverable | 30-day average | report only (mg/L) | all year | 002 |
| Magnesium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Sodium, total recoverable | 30-day average | report only (mg/L) | all year | 002 |
| Sodium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Sodium adsorption ratio | 30-day average | report only (Ratio) | all year | 002 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 002 |
| Arsenic, total recoverable | 30-day average | ≤ 100 ug/L | all year | 002 |
| Iron, total recoverable | 30-day average | ≤ 3500 ug/L | all year | 002 |
| Iron, total recoverable | 30-day average | ≤ 1000 ug/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 7000 ug/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 7000 ug/L | all year | 002 |
| Zinc, potentially dissolved | 30-day average | ≤ 428 ug/L | all year | 002 |
| Zinc, potentially dissolved | daily maximum | ≤ 564 ug/L | all year | 002 |
| Copper, potentially dissolved | 30-day average | ≤ 29 ug/L | all year | 002 |
| Copper, potentially dissolved | daily maximum | ≤ 50 ug/L | all year | 002 |
| Cadmium, potentially dissolvd | 30-day average | ≤ 31 ug/L | all year | 002 |
| Cadmium, potentially dissolvd | 30-day average | ≤ 1.2 ug/L | all year | 002 |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 9.1 ug/L | all year | 002 |
| Lead, potentially dissolvd | 30-day average | ≤ 40 ug/L | all year | 002 |
| Lead, potentially dissolvd | 30-day average | ≤ 11 ug/L | all year | 002 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 002 |
| Lead, potentially dissolvd | daily maximum | ≤ 281 ug/L | all year | 002 |
| Selenium, potentially dissolvd | 30-day average | ≤ 254 ug/L | all year | 002 |
| Selenium, potentially dissolvd | 30-day average | ≤ 4.6 ug/L | all year | 002 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 002 |
| Selenium, potentially dissolvd | daily maximum | ≤ 18 ug/L | all year | 002 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .216 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total low level | 30-day geometric mean | ≤ .38 ug/L | all year | 002 |
| Mercury, total low level | 30-day average | ≤ .01 ug/L | all year | 002 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 002 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 tox chronic | all year | 002 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 100 tox chronic | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | maximum 7-day average | ≤ 70 mg/L | all year | 004 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 004 |
| Iron, total recoverable | 30-day average | ≤ 3500 mg/L | all year | 004 |
| Iron, total recoverable | 30-day average | ≤ 1000 ug/L | all year | 004 |
| Iron, total recoverable | maximum 7-day average | ≤ 7000 mg/L | all year | 004 |
| Iron, total recoverable | daily maximum | ≤ 7000 ug/L | all year | 004 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 004 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 004 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 004 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 004 |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 004 |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 004 |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | 004 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 004 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 004 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .216 MGD | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Mercury, total low level | 30-day average | report only (ug/L) | all year | 004 |
Cited limits by parameter: Colorado's rules and the federal ones.
Same industry: the 19 Coal Mining permits in Colorado.
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Your permit document is the final word. As JSON: /api/v1/permits/CO0038342 · MCP: https://passage-data.com/mcp