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Bituminous Coal - Underground, Oak Creek, Colorado. NPDES permit CO0042161 expired Jun 30, 2012; 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 | minimum | ≥ 6.5 SU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | Mar, Jun, Sep, Dec | 001 |
| pH | minimum | ≥ 6.5 SU | Mar, Jun, Sep, Dec | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | Mar, Jun, Sep, Dec | 001 |
| pH | maximum | ≤ 9 SU | Mar, Jun, Sep, Dec | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | Mar, Jun, Sep, Dec | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | Mar, Jun, Sep, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | Mar, Jun, Sep, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | Mar, Jun, Sep, Dec | 001 |
| Solids, settleable | 30-day average | report only (mL/L) | all year | 001 |
| Solids, settleable | 30-day average | report only (mL/L) | all year | 001 |
| Solids, settleable | 30-day average | report only (mL/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, settleable | 30-day average | report only (mL/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | Mar, Jun, Sep, Dec | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | 30-day average | ≤ 1047 mg/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1047 mg/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1047 mg/L | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | 30-day average | ≤ 1047 mg/L | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | rolling average | report only (mg/L) | all year | 001 |
| Iron, total recoverable | rolling average | report only (mg/L) | all year | 001 |
| Iron, total recoverable | rolling average | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | rolling average | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.58 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.58 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.58 MGD | Mar, Jun, Sep, Dec | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.58 MGD | Mar, Jun, Sep, Dec | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | 001 |
| Solids, total dissolved | quarterly average | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, total dissolved | quarterly average | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | Mar, Jun, Sep, Dec | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | Mar, Jun, Sep, Dec | 001 |
| LC50 Static Renewal 48Hr Acute Daphnia magna | minimum value | ≥ 75.0001 % | Mar | 001 |
| LC50 Static Renewal 48Hr Acute Daphnia magna | minimum value | ≥ 81.0001 % | Jun | 001 |
| LC50 Static Renewal 48Hr Acute Daphnia magna | minimum value | ≥ 90.0001 % | Sep | 001 |
| LC50 Static Renewal 48Hr Acute Daphnia magna | minimum value | ≥ 88.0001 % | Dec | 001 |
| Sulfate [as S] | 30-day average | ≤ 250 mg/L | all year | 002 |
| Sulfate [as S] | 30-day average | ≤ 250 mg/L | all year | 002 |
| Sulfate [as S] | 30-day average | ≤ 250 mg/L | Mar, Jun, Sep, Dec | 002 |
| Sulfate [as S] | 30-day average | ≤ 250 mg/L | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 3.8 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 3.8 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 3.8 lb/d | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 3.8 lb/d | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 5.6 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 5.6 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 5.6 lb/d | Mar, Jun, Sep, Dec | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 5.6 lb/d | Mar, Jun, Sep, Dec | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | minimum | ≥ 6.5 SU | Mar, Jun, Sep, Dec | 002 |
| pH | minimum | ≥ 6.5 SU | Mar, Jun, Sep, Dec | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | Mar, Jun, Sep, Dec | 002 |
| pH | maximum | ≤ 8.5 SU | Mar, Jun, Sep, Dec | 002 |
| Solids, total suspended | 30-day average | ≤ 75 mg/L | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 75 mg/L | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 75 mg/L | Mar, Jun, Sep, Dec | 002 |
| Solids, total suspended | 30-day average | ≤ 75 mg/L | Mar, Jun, Sep, Dec | 002 |
| Solids, total suspended | daily maximum | ≤ 110 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 110 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 110 mg/L | Mar, Jun, Sep, Dec | 002 |
| Solids, total suspended | daily maximum | ≤ 110 mg/L | Mar, Jun, Sep, Dec | 002 |
| Nitrite + Nitrate total [as N] | 30-day average | ≤ 10 mg/L | all year | 002 |
| Nitrite + Nitrate total [as N] | 30-day average | ≤ 10 mg/L | all year | 002 |
| Nitrite + Nitrate total [as N] | 30-day average | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 002 |
| Nitrite + Nitrate total [as N] | 30-day average | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 002 |
| Chloride [as Cl] | 30-day average | ≤ 250 mg/L | all year | 002 |
| Chloride [as Cl] | 30-day average | ≤ 250 mg/L | all year | 002 |
| Chloride [as Cl] | 30-day average | ≤ 250 mg/L | Mar, Jun, Sep, Dec | 002 |
| Chloride [as Cl] | 30-day average | ≤ 250 mg/L | Mar, Jun, Sep, Dec | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .015 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .015 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .015 MGD | Mar, Jun, Sep, Dec | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .015 MGD | Mar, Jun, Sep, Dec | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | 002 |
| Chlorine, total residual | 30-day average | report only (mg/L) | all year | 002 |
| Chlorine, total residual | 30-day average | report only (mg/L) | all year | 002 |
| Chlorine, total residual | 30-day average | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chlorine, total residual | 30-day average | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chlorine, total residual | daily maximum | ≤ .5 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .5 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .5 mg/L | Mar, Jun, Sep, Dec | 002 |
| Chlorine, total residual | daily maximum | ≤ .5 mg/L | Mar, Jun, Sep, Dec | 002 |
| Coliform, fecal general | 30-day geometric mean | report only (#/100mL) | all year | 002 |
| Coliform, fecal general | 30-day geometric mean | report only (#/100mL) | all year | 002 |
| Coliform, fecal general | 30-day geometric mean | report only (#/100mL) | Mar, Jun, Sep, Dec | 002 |
| Coliform, fecal general | 30-day geometric mean | report only (#/100mL) | Mar, Jun, Sep, Dec | 002 |
| Coliform, fecal general | annual average | ≤ 2.2 #/100mL | Jun | 002 |
| Coliform, fecal general | annual average | ≤ 2.2 #/100mL | Jun | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (mg/L) | all year | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (mg/L) | all year | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (mg/L) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (mg/L) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | all year | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | all year | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (lb/d) | all year | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (lb/d) | all year | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (lb/d) | Mar, Jun, Sep, Dec | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (lb/d) | Mar, Jun, Sep, Dec | 300 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 300 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 300 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | Mar, Jun, Sep, Dec | 300 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | Mar, Jun, Sep, Dec | 300 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 300 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 300 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | 300 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | 300 |
| Arsenic, total [as As] | 30-day average | report only (ug/L) | all year | MON |
| Arsenic, total [as As] | 30-day average | report only (ug/L) | all year | MON |
| Arsenic, total [as As] | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Arsenic, total [as As] | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | MON |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | MON |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | MON |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | MON |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | MON |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | MON |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | MON |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | MON |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | MON |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | MON |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | MON |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | MON |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | MON |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | MON |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Chromium, trivalent, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Chromium, trivalent, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Chromium, trivalent, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Chromium, trivalent, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Chromium, trivalent, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Chromium, trivalent, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Chromium, trivalent, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Chromium, trivalent, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Nickel, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Nickel, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Nickel, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Nickel, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | MON |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | MON |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | MON |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | MON |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | MON |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | MON |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | MON |
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/CO0042161 · MCP: https://passage-data.com/mcp