Clean Water Act discharge permit · NPDES MTR000558
AMERICAN PACIFIC MINING - MADISON PROJECT (SW MINING), Silver Star, MT: NPDES MTR000558 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
AMERICAN PACIFIC MINING - MADISON PROJECT (SW MINING), held by BROADWAY GOLD CORP, holds NPDES permit MTR000558, which discharges to Jefferson River. EPA’s file records it issued September 19, 2018 and expiring January 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | AMERICAN PACIFIC MINING - MADISON PROJECT (SW MINING) |
|---|---|
| Permittee as filed | BROADWAY GOLD CORP |
| NPDES ID | MTR000558 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | September 19, 2018 |
| Expiration date | January 31, 2023 |
| Address | Silver Star, MT 59751 |
| Receiving water | JEFFERSON RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Jefferson River-Silver Star (HUC 100200050104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 15With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| pH | 10 | 20 | 0 | ||
| Solids, total suspended | 5 | 10 | 0 | ||
| Hardness, total [as CaCO3] | 5 | 10 | 0 | ||
| Arsenic, total [as As] | 5 | 10 | 0 | ||
| Beryllium, total [as Be] | 5 | 10 | 0 | ||
| Cadmium, total [as Cd] | 5 | 10 | 0 | ||
| Copper, total [as Cu] | 5 | 10 | 0 | ||
| Iron, total [as Fe] | 5 | 10 | 0 | ||
| Lead, total [as Pb] | 5 | 10 | 0 | ||
| Nickel, total [as Ni] | 5 | 10 | 0 | ||
| Silver, total [as Ag] | 5 | 10 | 0 | ||
| Zinc, total [as Zn] | 5 | 10 | 0 | ||
| Antimony, total [as Sb] | 5 | 10 | 0 | ||
| Selenium, total [as Se] | 5 | 10 | 0 | ||
| Mercury, total [as Hg] | 5 | 10 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000558.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 11Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 5, 2026 | WW Storm Water Construction - Failure to properly operate and maintain BMPs | ST6 |
| May 5, 2026 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| May 5, 2026 | WW Storm Water Construction - Failure to properly install/implement BMPs | ST6 |
| July 16, 2024 | WW Storm Water Non-Construction - Failure to Conduct Inspections | ST6 |
| July 16, 2024 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | ST6 |
| July 16, 2024 | WW Storm Water Non-Construction - Failure to Maintain Records | ST6 |
| July 16, 2024 | WW Storm Water Non-Construction - Failure to properly operate and maintain BMPs | ST6 |
| June 28, 2017 | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| June 28, 2017 | WW Storm Water Non-Construction - Failure to Monitor | ST6 |
| June 28, 2017 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | ST6 |
| June 28, 2017 | WW Storm Water Non-Construction - Failure to Maintain Records | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MTR000558 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.