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Metal Ores, Nye, Montana. NPDES permit MT0024716, in force until Aug 31, 2028. Last 12 months: over a limit 6 times (last December 2025), 30 required values missing, 1 of 119 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| December 2025 | 002 | Copper, total recoverable, daily maximum | 13 ug/L | ≤ 5.8 ug/L | 124% |
| December 2025 | 002 | Lead, total recoverable, daily maximum | 1.2 ug/L | ≤ 1 ug/L | 20% |
| December 2025 | SUM | Copper, total recoverable, daily maximum | 13 ug/L | ≤ 4.7 ug/L | 177% |
| December 2025 | SUM | Copper, total recoverable, daily maximum | 13 ug/L | ≤ 5.8 ug/L | 124% |
| December 2025 | SUM | Lead, total recoverable, daily maximum | 1.2 ug/L | ≤ .8 ug/L | 50% |
| December 2025 | SUM | Lead, total recoverable, daily maximum | 1.2 ug/L | ≤ 1 ug/L | 20% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Flow rate | monthly average | report only (MGD) | all year | 001 |
| Flow rate | daily maximum | report only (MGD) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | monthly average | ≤ 22.1 ug/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ 37 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 |
| Cadmium, total recoverable | monthly average | ≤ .24 ug/L | all year | 001 |
| Cadmium, total recoverable | daily maximum | ≤ .49 ug/L | all year | 001 |
| Lead, total recoverable | monthly average | ≤ 3.05 ug/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ 4.04 ug/L | all year | 001 |
| Copper, total recoverable | monthly average | ≤ 2.85 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 3.8 ug/L | all year | 001 |
| Mercury, total recoverable | monthly average | ≤ .49 ug/L | all year | 001 |
| Mercury, total recoverable | daily maximum | ≤ .49 ug/L | all year | 001 |
| Pass/Fail Static 96 Hr Acute Pimephales Promelas | value | ≤ 0 pass=0;fail=1 | all year | 001 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | value | ≤ 0 pass=0;fail=1 | 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 | 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 | maximum | report only (SU) | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | monthly average | ≤ 58 ug/L | all year | 002 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ 96 ug/L | all year | 002 |
| Zinc, total recoverable | 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] | daily maximum | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | monthly average | ≤ .4 ug/L | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | ≤ .8 ug/L | all year | 002 |
| Lead, total recoverable | monthly average | ≤ .74 ug/L | all year | 002 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Lead, total recoverable | daily maximum | ≤ 1 ug/L | all year | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Copper, total recoverable | monthly average | ≤ 4.4 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ 5.8 ug/L | all year | 002 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | monthly average | ≤ .1 ug/L | all year | 002 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | daily maximum | ≤ .1 ug/L | all year | 002 |
| Flow rate | monthly average | 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 | 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 |
| Flow rate | daily maximum | report only (MGD) | all year | 003 |
| Flow rate | daily maximum | report only (MGD) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | monthly average | ≤ 45 ug/L | all year | 003 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | daily maximum | ≤ 76 ug/L | all year | 003 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | 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] | 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 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | monthly average | ≤ .1 ug/L | all year | 003 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | daily maximum | ≤ .2 ug/L | all year | 003 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total recoverable | monthly average | ≤ .6 ug/L | all year | 003 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Lead, total recoverable | daily maximum | ≤ .8 ug/L | all year | 003 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Copper, total recoverable | monthly average | ≤ 3.5 ug/L | all year | 003 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total recoverable | daily maximum | ≤ 4.7 ug/L | all year | 003 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Mercury, total recoverable | monthly average | ≤ .1 ug/L | all year | 003 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Mercury, total recoverable | daily maximum | ≤ .1 ug/L | all year | 003 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| pH | quarterly average | report only (SU) | all year | RIV |
| pH | quarterly average | report only (SU) | all year | RIV |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | Jul–Sep | RIV |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | Jul–Sep | RIV |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | RIV |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | RIV |
| Nitrogen, Kjeldahl, total [as N] | quarterly average | report only (mg/L) | all year | RIV |
| Nitrogen, Kjeldahl, total [as N] | quarterly average | report only (mg/L) | all year | RIV |
| Nitrite + Nitrate total [as N] | quarterly average | report only (mg/L) | all year | RIV |
| Nitrite + Nitrate total [as N] | quarterly average | report only (mg/L) | all year | RIV |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | RIV |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | RIV |
| Hardness, total [as CaCO3] | quarterly average | report only (mg/L) | all year | RIV |
| Hardness, total [as CaCO3] | quarterly average | report only (mg/L) | all year | RIV |
| Nickel, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Nickel, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Silver total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Silver total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Zinc, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Zinc, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Aluminum, dissolved [as Al] | quarterly average | report only (ug/L) | all year | RIV |
| Aluminum, dissolved [as Al] | quarterly average | report only (ug/L) | all year | RIV |
| Cadmium, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Cadmium, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Lead, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Lead, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Copper, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Copper, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Mercury, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Mercury, total recoverable | quarterly average | report only (ug/L) | all year | RIV |
| Flow rate | monthly average | report only (MGD) | all year | SUM |
| Flow rate | monthly average | report only (MGD) | all year | SUM |
| Flow rate | daily maximum | report only (MGD) | all year | SUM |
| Flow rate | daily maximum | report only (MGD) | all year | SUM |
| pH | minimum | ≥ 6 SU | all year | SUM |
| pH | minimum | ≥ 6 SU | all year | SUM |
| pH | maximum | ≤ 9 SU | all year | SUM |
| pH | maximum | ≤ 9 SU | all year | SUM |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | SUM |
| Nitrogen, total [as N] | monthly average | ≤ 60 lb/d | all year | SUM |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | SUM |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | SUM |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | SUM |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SUM |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SUM |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | SUM |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | SUM |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | SUM |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | SUM |
| Silver total recoverable | monthly average | report only (ug/L) | all year | SUM |
| Silver total recoverable | monthly average | report only (ug/L) | all year | SUM |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | SUM |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | SUM |
| Zinc, total recoverable | monthly average | ≤ 58 ug/L | all year | SUM |
| Zinc, total recoverable | monthly average | ≤ 45 ug/L | all year | SUM |
| Zinc, total recoverable | daily maximum | ≤ 96 ug/L | all year | SUM |
| Zinc, total recoverable | daily maximum | ≤ 76 ug/L | all year | SUM |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | SUM |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | SUM |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | SUM |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | SUM |
| Cadmium, total recoverable | monthly average | ≤ .4 ug/L | all year | SUM |
| Cadmium, total recoverable | monthly average | ≤ .1 ug/L | all year | SUM |
| Cadmium, total recoverable | daily maximum | ≤ .8 ug/L | all year | SUM |
| Cadmium, total recoverable | daily maximum | ≤ .2 ug/L | all year | SUM |
| Lead, total recoverable | monthly average | ≤ .74 ug/L | all year | SUM |
| Lead, total recoverable | monthly average | ≤ .6 ug/L | all year | SUM |
| Lead, total recoverable | daily maximum | ≤ 1 ug/L | all year | SUM |
| Lead, total recoverable | daily maximum | ≤ .8 ug/L | all year | SUM |
| Copper, total recoverable | monthly average | ≤ 4.4 ug/L | all year | SUM |
| Copper, total recoverable | monthly average | ≤ 3.5 ug/L | all year | SUM |
| Copper, total recoverable | daily maximum | ≤ 5.8 ug/L | all year | SUM |
| Copper, total recoverable | daily maximum | ≤ 4.7 ug/L | all year | SUM |
| Mercury, total recoverable | monthly average | ≤ .1 ug/L | all year | SUM |
| Mercury, total recoverable | monthly average | ≤ .1 ug/L | all year | SUM |
| Mercury, total recoverable | daily maximum | ≤ .1 ug/L | all year | SUM |
| Mercury, total recoverable | daily maximum | ≤ .1 ug/L | all year | SUM |
Cited limits by parameter: Montana's rules and the federal ones.
Same industry: the 7 Metal Mining permits in Montana.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MT0024716 · MCP: https://passage-data.com/mcp