Clean Water Act discharge permit · NPDES MTR000893
WIRTH QUARRY, Wolf Creek, MT: NPDES MTR000893 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
WIRTH QUARRY, held by Mike Wirth Construction, holds NPDES permit MTR000893, which discharges to Little Prickly Pear Creek. EPA’s file records it issued April 24, 2026 and expiring January 31, 2028. 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.
What the register holds for WIRTH QUARRY: its NPDES ID, its permit type and status, its dates, its address in Wolf Creek, Montana, its receiving water, and 2 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR000893.
Identity
| Facility as filed | WIRTH QUARRY |
|---|---|
| Permittee as filed | Mike Wirth Construction |
| NPDES ID | MTR000893 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | April 24, 2026 |
| Expiration date | January 31, 2028 |
| Address | Wolf Creek, MT 59648 |
| Receiving water | LITTLE PRICKLY PEAR CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Little Prickley Pear Creek-Log Gulch (HUC 100301011906) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 2Pollutants on file
- 2Under a numeric limit
- 0With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000893.
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 MTR000893.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MTR000893.
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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 MTR000893 there.
Nearby on the register
- Discharge permits in Wolf Creek
- Every permit record in Wolf Creek, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.