Clean Water Act discharge permit · NPDES MTX000014
OT MINING CORPORATION, Basin, MT: NPDES MTX000014 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 19Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
OT MINING CORPORATION holds NPDES permit MTX000014, which discharges to Ground Water. EPA’s file records it issued December 1, 2009 and expiring November 30, 2014.
OT MINING CORPORATION, Basin, Montana: State-issued individual permit MTX000014; Administratively continued (past its expiration date and still in force until reissued); issued December 1, 2009, term to November 30, 2014, by MONTANA DEQ; discharges to GROUND WATER.
- Arsenic, dissolved [as As]: 5 limits, 115 violations of any kind, 4 effluent exceedances, latest December 31, 2006, largest 50% over the limit.
- Iron, dissolved [as Fe]: 5 limits, 115 violations of any kind, 4 effluent exceedances, latest September 30, 2010, largest 1,155% over the limit.
- Lead, dissolved [as Pb]: 5 limits, 115 violations of any kind, 4 effluent exceedances, latest December 31, 2006, largest 198% over the limit.
- pH: 10 limits, 215 violations of any kind, 2 effluent exceedances, latest December 31, 2013.
- Cadmium, dissolved [as Cd]: 5 limits, 111 violations of any kind, 0 effluent exceedances.
- Copper, dissolved [as Cu]: 5 limits, 111 violations of any kind, 0 effluent exceedances.
- Zinc, dissolved [as Zn]: 5 limits, 111 violations of any kind, 0 effluent exceedances.
- Specific conductance: 5 limits, 96 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 5 limits, 96 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 5 limits, 96 violations of any kind, 0 effluent exceedances.
- Water level at sample collection time: 5 limits, 96 violations of any kind, 0 effluent exceedances.
- Chromium, dissolved [as Cr]: 3 limits, 51 violations of any kind, 0 effluent exceedances.
- Mercury, dissolved [as Hg]: 3 limits, 51 violations of any kind, 0 effluent exceedances.
- Beryllium, dissolved [as Be]: 3 limits, 36 violations of any kind, 0 effluent exceedances.
- Thallium, dissolved [as Tl]: 3 limits, 36 violations of any kind, 0 effluent exceedances.
- Nickel, dissolved [as Ni]: 3 limits, 36 violations of any kind, 0 effluent exceedances.
- Silver, dissolved [as Ag]: 3 limits, 36 violations of any kind, 0 effluent exceedances.
- Antimony, dissolved [as Sb]: 3 limits, 36 violations of any kind, 0 effluent exceedances.
- Selenium, dissolved [as Se]: 3 limits, 36 violations of any kind, 0 effluent exceedances.
- Nitrogen, nitrate total [as N]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Sulfate, total [as SO4]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Manganese, dissolved [as Mn]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- September 1, 2021: Management Practice Violations - Failure to Maintain Records (ST6).
- September 1, 2021: Monitoring Violations - Analysis not Conducted (ST6).
OT MINING CORPORATION among its neighbors
EPA’s permit file holds 2 discharge permits in the Boulder River-High Ore Creek subwatershed (HUC 100200060303), MTX000014 among them. Its county holds 54, 0 of them major permits; MTX000014 is a minor permit.
Other permits in the Boulder River-High Ore Creek subwatershed (HUC 100200060303)
- HIGH ORE RD IMPROVEMENT, Boulder: MTR111380, minor permit, discharging to HIGH ORE CREEK, permit term to December 31, 2027
Identity
| Facility as filed | OT MINING CORPORATION |
|---|---|
| Permittee as filed | OT MINING CORPORATION |
| NPDES ID | MTX000014 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | State-issued individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 1, 2009 |
| Expiration date | November 30, 2014 |
| Issuing agency | MONTANA DEQ |
| Address | Basin, MT 59631 |
| Receiving water | GROUND WATER |
| Subwatershed | Boulder River-High Ore Creek (HUC 100200060303) |
Effluent limits and exceedances
- 22Pollutants on file
- 19Under a numeric limit
- 22With a violation of any kind
- 4With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Arsenic, dissolved [as As] | 5 | 115 | 4 | December 31, 2006 | 50% over the limit |
| Iron, dissolved [as Fe] | 5 | 115 | 4 | September 30, 2010 | 1,155% over the limit |
| Lead, dissolved [as Pb] | 5 | 115 | 4 | December 31, 2006 | 198% over the limit |
| pH | 10 | 215 | 2 | December 31, 2013 | |
| Cadmium, dissolved [as Cd] | 5 | 111 | 0 | ||
| Copper, dissolved [as Cu] | 5 | 111 | 0 | ||
| Zinc, dissolved [as Zn] | 5 | 111 | 0 | ||
| Specific conductance | 5 | 96 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 96 | 0 | ||
| Nitrite + Nitrate total [as N] | 5 | 96 | 0 | ||
| Water level at sample collection time | 5 | 96 | 0 | ||
| Chromium, dissolved [as Cr] | 3 | 51 | 0 | ||
| Mercury, dissolved [as Hg] | 3 | 51 | 0 | ||
| Beryllium, dissolved [as Be] | 3 | 36 | 0 | ||
| Thallium, dissolved [as Tl] | 3 | 36 | 0 | ||
| Nickel, dissolved [as Ni] | 3 | 36 | 0 | ||
| Silver, dissolved [as Ag] | 3 | 36 | 0 | ||
| Antimony, dissolved [as Sb] | 3 | 36 | 0 | ||
| Selenium, dissolved [as Se] | 3 | 36 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 15 | 0 | ||
| Sulfate, total [as SO4] | 0 | 15 | 0 | ||
| Manganese, dissolved [as Mn] | 0 | 15 | 0 |
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 1, 2021 | Management Practice Violations - Failure to Maintain Records | ST6 |
| September 1, 2021 | Monitoring Violations - Analysis not Conducted | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES MTX000014.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MTX000014.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.