Clean Water Act discharge permit · NPDES MTG370450
SOUTH BOULDER RIVER, Pony, MT: NPDES MTG370450 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SOUTH BOULDER RIVER, held by Christopher Rojas, holds NPDES permit MTG370450, which discharges to South Boulder River. EPA’s file records it issued May 29, 2025 and expiring July 31, 2029. 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 SOUTH BOULDER RIVER: its NPDES ID, its permit type and status, its dates, its address in Pony, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG370450.
Identity
| Facility as filed | SOUTH BOULDER RIVER |
|---|---|
| Permittee as filed | Christopher Rojas |
| NPDES ID | MTG370450 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 29, 2025 |
| Expiration date | July 31, 2029 |
| Address | Pony, MT 59747 |
| Receiving water | SOUTH BOULDER RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Upper South Boulder Creek (HUC 100200050601) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MTG370450.
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 MTG370450.
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.
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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 MTG370450 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.