NPDES permit MT0030279 · Minor NON-POTW · administratively continued, expires 2024-12-31 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2024-12-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.
Last period with anything received: 2026-06-30.
Reports are due about 28 days after each monitoring period ends (the most common figure among MT permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Flow rate | MO AVG | report only | all year |
| 001 | pH | INST MIN | >= 6.5 SU | all year |
| 001 | pH | INST MAX | <= 8.5 SU | all year |
| 001 | Oil and grease, hexane extr method | INST MAX | <= 10 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | INST MAX | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | INST MAX | report only | all year |
| 001 | Nitrogen, inorganic total | MO AVG | <= 2.5 mg/L | all year |
| 001 | Nitrogen, inorganic total | INST MAX | report only | all year |
| 001 | Nitrogen, inorganic total | MO AVG | report only | all year |
| 001 | Nitrogen, inorganic total | ANNL AVG | <= 15 lb/d | all year |
| 001 | Iron, total recoverable | AVERAGE | <= .25 mg/L | all year |
| 001 | Iron, total recoverable | INST MAX | <= .38 mg/L | all year |
| 001 | Iron, total recoverable | MO AVG | report only | all year |
| 001 | Iron, total recoverable | ANNL AVG | <= 1.5 lb/d | all year |
| 001 | Zinc, total recoverable | AVERAGE | <= .1 mg/L | all year |
| 001 | Zinc, total recoverable | INST MAX | <= .15 mg/L | all year |
| 001 | Zinc, total recoverable | MO AVG | report only | all year |
| 001 | Zinc, total recoverable | ANNL AVG | <= .66 lb/d | all year |
| 001 | Cadmium, total recoverable | AVERAGE | <= .0008 mg/L | all year |
| 001 | Cadmium, total recoverable | INST MAX | <= .0012 mg/L | all year |
| 001 | Cadmium, total recoverable | MO AVG | report only | all year |
| 001 | Cadmium, total recoverable | ANNL AVG | <= .005 lb/d | all year |
| 001 | Lead, total recoverable | AVERAGE | <= .003 mg/L | all year |
| 001 | Lead, total recoverable | INST MAX | <= .003 mg/L | all year |
| 001 | Lead, total recoverable | MO AVG | report only | all year |
| 001 | Lead, total recoverable | ANNL AVG | <= .004 lb/d | all year |
| 001 | Chromium, total recoverable | AVERAGE | <= .13 mg/L | all year |
| 001 | Chromium, total recoverable | INST MAX | <= .02 mg/L | all year |
| 001 | Chromium, total recoverable | MO AVG | report only | all year |
| 001 | Chromium, total recoverable | ANNL AVG | <= .078 lb/d | all year |
| 001 | Copper, total recoverable | AVERAGE | <= .007 mg/L | all year |
| 001 | Copper, total recoverable | INST MAX | <= .01 mg/L | all year |
| 001 | Copper, total recoverable | MO AVG | report only | all year |
| 001 | Copper, total recoverable | ANNL AVG | <= .042 lb/d | all year |
| 001 | Manganese, total recoverable | AVERAGE | <= .11 mg/L | all year |
| 001 | Manganese, total recoverable | INST MAX | <= .15 mg/L | all year |
| 001 | Manganese, total recoverable | MO AVG | report only | all year |
| 001 | Manganese, total recoverable | ANNL AVG | <= .66 lb/d | all year |
| 001 | Mercury, total recoverable | AVERAGE | <= .0006 mg/L | all year |
| 001 | Mercury, total recoverable | INST MAX | <= .0006 mg/L | all year |
| 001 | Mercury, total recoverable | MO AVG | report only | all year |
| 001 | Mercury, total recoverable | ANNL AVG | report only | all year |
| 001 | Sulfate | AVERAGE | report only | all year |
| 001 | Sulfate | INST MAX | report only | all year |
| 001 | Oil and grease visual | VALUE | report only | all year |
| 002 | Flow rate | MO AVG | report only | all year |
| 002 | pH | INST MIN | >= 6.5 SU | all year |
| 002 | pH | INST MAX | <= 8.5 SU | all year |
| 002 | Oil and grease, hexane extr method | INST MAX | <= 10 mg/L | all year |
| 002 | Nitrogen, ammonia total [as N] | MO AVG | report only | all year |
| 002 | Nitrogen, ammonia total [as N] | INST MAX | report only | all year |
| 002 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 002 | Nitrite + Nitrate total [as N] | INST MAX | report only | all year |
| 002 | Nitrogen, inorganic total | MO AVG | <= 2.5 mg/L | all year |
| 002 | Nitrogen, inorganic total | INST MAX | report only | all year |
| 002 | Nitrogen, inorganic total | MO AVG | report only | all year |
| 002 | Nitrogen, inorganic total | ANNL AVG | <= 15 lb/d | all year |
| 002 | Iron, total recoverable | AVERAGE | <= .25 mg/L | all year |
| 002 | Iron, total recoverable | INST MAX | <= .38 mg/L | all year |
| 002 | Iron, total recoverable | MO AVG | report only | all year |
| 002 | Iron, total recoverable | ANNL AVG | <= 1.5 lb/d | all year |
| 002 | Zinc, total recoverable | AVERAGE | <= .1 mg/L | all year |
| 002 | Zinc, total recoverable | INST MAX | <= .15 mg/L | all year |
| 002 | Zinc, total recoverable | MO AVG | report only | all year |
| 002 | Zinc, total recoverable | ANNL AVG | <= .66 lb/d | all year |
| 002 | Cadmium, total recoverable | AVERAGE | <= .0008 mg/L | all year |
| 002 | Cadmium, total recoverable | INST MAX | <= .0012 mg/L | all year |
| 002 | Cadmium, total recoverable | MO AVG | report only | all year |
| 002 | Cadmium, total recoverable | ANNL AVG | <= .005 lb/d | all year |
| 002 | Lead, total recoverable | AVERAGE | <= .003 mg/L | all year |
| 002 | Lead, total recoverable | INST MAX | <= .003 mg/L | all year |
| 002 | Lead, total recoverable | MO AVG | report only | all year |
| 002 | Lead, total recoverable | ANNL AVG | <= .004 lb/d | all year |
| 002 | Chromium, total recoverable | AVERAGE | <= .13 mg/L | all year |
| 002 | Chromium, total recoverable | INST MAX | <= .02 mg/L | all year |
| 002 | Chromium, total recoverable | MO AVG | report only | all year |
| 002 | Chromium, total recoverable | ANNL AVG | <= .078 lb/d | all year |
| 002 | Copper, total recoverable | AVERAGE | <= .007 mg/L | all year |
| 002 | Copper, total recoverable | INST MAX | <= .01 mg/L | all year |
| 002 | Copper, total recoverable | MO AVG | report only | all year |
| 002 | Copper, total recoverable | ANNL AVG | <= .042 lb/d | all year |
| 002 | Manganese, total recoverable | AVERAGE | <= .11 mg/L | all year |
| 002 | Manganese, total recoverable | INST MAX | <= .15 mg/L | all year |
| 002 | Manganese, total recoverable | MO AVG | report only | all year |
| 002 | Manganese, total recoverable | ANNL AVG | <= .66 lb/d | all year |
| 002 | Mercury, total recoverable | AVERAGE | <= .0006 mg/L | all year |
| 002 | Mercury, total recoverable | INST MAX | <= .0006 mg/L | all year |
| 002 | Mercury, total recoverable | MO AVG | report only | all year |
| 002 | Mercury, total recoverable | ANNL AVG | report only | all year |
| 002 | Sulfate | AVERAGE | report only | all year |
| 002 | Sulfate | INST MAX | report only | all year |
| 002 | Oil and grease visual | VALUE | report only | all year |
| 003 | Temperature, water deg. fahrenheit | VALUE | report only | all year |
| 003 | Flow rate | MO AVG | report only | all year |
| 003 | pH | INST MIN | >= 6.5 SU | all year |
| 003 | pH | INST MAX | <= 8.5 SU | all year |
| 003 | Oil and grease, hexane extr method | INST MAX | <= 10 mg/L | all year |
| 003 | Nitrogen, ammonia total [as N] | MO AVG | report only | all year |
| 003 | Nitrogen, ammonia total [as N] | INST MAX | report only | all year |
| 003 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 003 | Nitrite + Nitrate total [as N] | INST MAX | report only | all year |
| 003 | Nitrogen, inorganic total | MO AVG | <= 2.5 mg/L | all year |
| 003 | Nitrogen, inorganic total | INST MAX | report only | all year |
| 003 | Nitrogen, inorganic total | MO AVG | report only | all year |
| 003 | Nitrogen, inorganic total | ANNL AVG | <= 13.2 lb/d | all year |
| 003 | Iron, total recoverable | AVERAGE | <= .25 mg/L | all year |
| 003 | Iron, total recoverable | INST MAX | <= .38 mg/L | all year |
| 003 | Iron, total recoverable | MO AVG | report only | all year |
| 003 | Iron, total recoverable | ANNL AVG | <= 1.32 lb/d | all year |
| 003 | Zinc, total recoverable | AVERAGE | <= .1 mg/L | all year |
| 003 | Zinc, total recoverable | INST MAX | <= .15 mg/L | all year |
| 003 | Zinc, total recoverable | MO AVG | report only | all year |
| 003 | Zinc, total recoverable | ANNL AVG | <= .342 lb/d | all year |
| 003 | Cadmium, total recoverable | AVERAGE | <= .0008 mg/L | all year |
| 003 | Cadmium, total recoverable | INST MAX | <= .0012 mg/L | all year |
| 003 | Cadmium, total recoverable | MO AVG | report only | all year |
| 003 | Cadmium, total recoverable | ANNL AVG | <= .0042 lb/d | all year |
| 003 | Lead, total recoverable | AVERAGE | <= .003 mg/L | all year |
| 003 | Lead, total recoverable | INST MAX | <= .003 mg/L | all year |
| 003 | Lead, total recoverable | MO AVG | report only | all year |
| 003 | Lead, total recoverable | ANNL AVG | <= .004 lb/d | all year |
| 003 | Chromium, total recoverable | AVERAGE | <= .13 mg/L | all year |
| 003 | Chromium, total recoverable | INST MAX | <= .02 mg/L | all year |
| 003 | Chromium, total recoverable | MO AVG | report only | all year |
| 003 | Chromium, total recoverable | ANNL AVG | <= .066 lb/d | all year |
| 003 | Copper, total recoverable | AVERAGE | <= .007 mg/L | all year |
| 003 | Copper, total recoverable | INST MAX | <= .01 mg/L | all year |
| 003 | Copper, total recoverable | MO AVG | report only | all year |
| 003 | Copper, total recoverable | ANNL AVG | <= .036 lb/d | all year |
| 003 | Manganese, total recoverable | AVERAGE | <= .11 mg/L | all year |
| 003 | Manganese, total recoverable | INST MAX | <= .15 mg/L | all year |
| 003 | Manganese, total recoverable | MO AVG | report only | all year |
| 003 | Manganese, total recoverable | ANNL AVG | <= .54 lb/d | all year |
| 003 | Mercury, total recoverable | AVERAGE | <= .0006 mg/L | all year |
| 003 | Mercury, total recoverable | INST MAX | <= .0006 mg/L | all year |
| 003 | Mercury, total recoverable | MO AVG | report only | all year |
| 003 | Mercury, total recoverable | ANNL AVG | report only | all year |
| 003 | Sulfate | AVERAGE | report only | all year |
| 003 | Sulfate | INST MAX | report only | all year |
| 003 | Oil and grease visual | VALUE | report only | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states