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Bituminous Coal And Lignite - Surface, Palisade, Colorado. NPDES permit CO0027146 expired Jan 31, 2017; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | 30-day average | ≤ 18 ug/L | all year | 002 |
| Iron, total recoverable | 30-day average | ≤ 3500 ug/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 7000 ug/L | all year | 002 |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | 002 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 002 |
| Copper, potentially dissolved | 30-day average | ≤ 22 ug/L | all year | 002 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 002 |
| Copper, potentially dissolved | daily maximum | ≤ 35 ug/L | all year | 002 |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 002 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .92 ug/L | all year | 002 |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | 002 |
| Lead, potentially dissolvd | 30-day average | ≤ 7.6 ug/L | all year | 002 |
| Selenium, potentially dissolvd | 30-day average | report only (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 | ≤ 18.4 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 | ≤ .5 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Sulfide-hydrogen sulfide [undissociated] | 30-day average | report only (mg/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 (N=0;Y=1) | all year | 002 |
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | 016 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 016 |
| pH | minimum | ≥ 6.5 SU | all year | 016 |
| pH | maximum | ≤ 9 SU | all year | 016 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 016 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 016 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 016 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 016 |
| Arsenic, total recoverable | 30-day average | ≤ 18 ug/L | all year | 016 |
| Iron, total recoverable | 30-day average | ≤ 3500 ug/L | all year | 016 |
| Iron, total recoverable | daily maximum | ≤ 7000 ug/L | all year | 016 |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | 016 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 016 |
| Copper, potentially dissolved | 30-day average | ≤ 22 ug/L | all year | 016 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 016 |
| Copper, potentially dissolved | daily maximum | ≤ 35 ug/L | all year | 016 |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 016 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .92 ug/L | all year | 016 |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | 016 |
| Lead, potentially dissolvd | 30-day average | ≤ 7.6 ug/L | all year | 016 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 016 |
| Selenium, potentially dissolvd | 30-day average | ≤ 4.6 ug/L | all year | 016 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 016 |
| Selenium, potentially dissolvd | daily maximum | ≤ 18.4 ug/L | all year | 016 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 016 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .5 MGD | all year | 016 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 016 |
| Sulfide-hydrogen sulfide [undissociated] | 30-day average | report only (mg/L) | all year | 016 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 016 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 016 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | 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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Your permit document is the final word. As JSON: /api/v1/permits/CO0027146 · MCP: https://passage-data.com/mcp