Clean Water Act discharge permit · NPDES MT0030015
M & W MILLING & REFINING INC, Virginia City, MT: NPDES MT0030015 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
M & W MILLING & REFINING INC, held by M AND W MILLING AND REFINING INC, holds NPDES permit MT0030015, which discharges to Ephemeral Trib To Alder Gulch. EPA’s file records it issued February 7, 2000 and expiring March 31, 2005. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | M & W MILLING & REFINING INC |
|---|---|
| Permittee as filed | M AND W MILLING AND REFINING INC |
| NPDES ID | MT0030015 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 7, 2000 |
| Expiration date | March 31, 2005 |
| Issuing agency | MONTANA DEQ |
| Address | Virginia City, MT 59755 |
| Receiving water | EPHEMERAL TRIB TO ALDER GULCH |
| Subwatershed | Upper Alder Gulch (HUC 100200030402) |
| SIC | 1041 – Gold Ores |
| Other EPA IDs (FRS) | RCRA handler MTR000008185 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 20Pollutants on file
- 15Under a numeric limit
- 20With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, total [as N] | 4 | 52 | 25 | September 30, 2013 | 191% over the limit |
| Lead, total recoverable | 4 | 35 | 8 | March 31, 2005 | 3,783% over the limit |
| Cadmium, total recoverable | 4 | 33 | 6 | May 31, 2005 | 713% over the limit |
| Copper, total recoverable | 4 | 29 | 2 | March 31, 2014 | 11% over the limit |
| Mercury, total recoverable | 4 | 28 | 1 | June 30, 2003 | 233% over the limit |
| pH | 4 | 29 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 27 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 27 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 27 | 0 | ||
| Arsenic, total recoverable | 4 | 27 | 0 | ||
| Iron, total recoverable | 4 | 27 | 0 | ||
| Zinc, total recoverable | 4 | 27 | 0 | ||
| Chromium, total recoverable | 4 | 27 | 0 | ||
| Flow rate | 1 | 7 | 0 | ||
| Water level at sample collection time | 1 | 7 | 0 | ||
| Solids, total suspended | 0 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 2 | 0 | ||
| Silver total recoverable | 0 | 2 | 0 | ||
| Manganese, total recoverable | 0 | 2 | 0 | ||
| Flow rate | 0 | 1 | 0 |
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MT0030015.
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 MT0030015 there.
Nearby on the register
- Discharge permits in Virginia City
- Every permit record in Virginia City, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.