Passage Data · Check a report · Use it from your AI
Bituminous Coal And Lignite - Surface, Savage, Montana. NPDES permit MT0023604 expired Sep 30, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Flow rate | monthly average | report only (MGD) | all year | 001 |
| Flow rate | value | report only (MGD) | all year | 001 |
| Flow rate | monthly average | report only (MGD) | all year | 001 |
| Flow rate | daily maximum | report only (MGD) | all year | 001 |
| Flow rate | daily maximum | report only (MGD) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | minimum | report only (SU) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | report only (SU) | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 001 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 001 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ 3500 ug/L | all year | 001 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 7000 ug/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 001 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 001 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 001 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 001 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 001 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 001 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 001 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 001 |
| % Mortality Static 48Hr Acute Ceriodaphnia dubia | value | report only (%) | all year | 001 |
| TU Static Renewal 96Hr Acute Pimphales promelas | value | report only (tox acute) | all year | 001 |
| Flow rate | monthly average | report only (MGD) | all year | 002 |
| Flow rate | monthly average | report only (MGD) | all year | 002 |
| Flow rate | value | report only (MGD) | all year | 002 |
| Flow rate | daily maximum | report only (MGD) | all year | 002 |
| Flow rate | daily maximum | report only (MGD) | all year | 002 |
| pH | minimum | report only (SU) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 002 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 002 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 002 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 002 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 002 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 002 |
| Iron, total [as Fe] | monthly average | ≤ 3500 ug/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 7000 ug/L | all year | 002 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 002 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 002 |
| % Mortality Static 48Hr Acute Ceriodaphnia dubia | value | report only (%) | all year | 002 |
| TU Static Renewal 96Hr Acute Pimphales promelas | value | report only (tox acute) | all year | 002 |
| Flow rate | value | report only (MGD) | all year | 003 |
| Flow rate | monthly average | report only (MGD) | all year | 003 |
| Flow rate | monthly average | report only (MGD) | all year | 003 |
| Flow rate | daily maximum | report only (MGD) | all year | 003 |
| Flow rate | daily maximum | report only (MGD) | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 003 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 003 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 003 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 003 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 003 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 003 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 003 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 003 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 003 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 003 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 003 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 003 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 003 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 003 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 003 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 003 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 003 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 003 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 003 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 003 |
| Iron, total [as Fe] | monthly average | ≤ 3500 ug/L | all year | 003 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 003 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 003 |
| Iron, total [as Fe] | daily maximum | ≤ 7000 ug/L | all year | 003 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 003 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 003 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 003 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 003 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 003 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 003 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 003 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 003 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 003 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 003 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 003 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 003 |
| % Mortality Static 48Hr Acute Ceriodaphnia dubia | value | report only (%) | all year | 003 |
| TU Static Renewal 96Hr Acute Pimphales promelas | value | report only (tox acute) | all year | 003 |
| Flow rate | monthly average | report only (MGD) | all year | 004 |
| Flow rate | value | report only (MGD) | all year | 004 |
| Flow rate | monthly average | report only (MGD) | all year | 004 |
| Flow rate | daily maximum | report only (MGD) | all year | 004 |
| Flow rate | daily maximum | report only (MGD) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | minimum | report only (SU) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| pH | maximum | report only (SU) | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 004 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 004 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 004 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 004 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 004 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 004 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 004 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 004 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 004 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 004 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 004 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 004 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 004 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 004 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 004 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 004 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 004 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 004 |
| Iron, total [as Fe] | monthly average | ≤ 3500 ug/L | all year | 004 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 004 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 004 |
| Iron, total [as Fe] | daily maximum | ≤ 7000 ug/L | all year | 004 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 004 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 004 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 004 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 004 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 004 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 004 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 004 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 004 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 004 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 004 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 004 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 004 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 004 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 004 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 004 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 004 |
| % Mortality Static 48Hr Acute Ceriodaphnia dubia | value | report only (%) | all year | 004 |
| TU Static Renewal 96Hr Acute Pimphales promelas | value | report only (tox acute) | all year | 004 |
| Flow rate | value | report only (MGD) | all year | 005 |
| Flow rate | monthly average | report only (MGD) | all year | 005 |
| Flow rate | monthly average | report only (MGD) | all year | 005 |
| Flow rate | daily maximum | report only (MGD) | all year | 005 |
| Flow rate | daily maximum | report only (MGD) | all year | 005 |
| pH | minimum | report only (SU) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | report only (SU) | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 005 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 005 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 005 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 005 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 005 |
| Oil & Grease | maximum | ≤ 10 mg/L | all year | 005 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 005 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 005 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 005 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 005 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 005 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | all year | 005 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 005 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 005 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 005 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 005 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 005 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 005 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 005 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 005 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 005 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 005 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 005 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 005 |
| Iron, total [as Fe] | monthly average | ≤ 3500 ug/L | all year | 005 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 005 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 005 |
| Iron, total [as Fe] | daily maximum | ≤ 7000 ug/L | all year | 005 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 005 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 005 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 005 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 005 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 005 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 005 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 005 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 005 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 005 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 005 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 005 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 005 |
| % Mortality Static 48Hr Acute Ceriodaphnia dubia | value | report only (%) | all year | 005 |
| TU Static Renewal 96Hr Acute Pimphales promelas | value | report only (tox acute) | all year | 005 |
Cited limits by parameter: Montana's rules and the federal ones.
Same industry: the 9 Coal Mining permits in Montana.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MT0023604 · MCP: https://passage-data.com/mcp