Clean Water Act discharge permit · NPDES MTR111744
GROOM/HALL CR – 1M W SWAN LAKE, Swan Lake, MT: NPDES MTR111744 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
GROOM/HALL CR – 1M W SWAN LAKE, held by RIVERSIDE CONTRACTING INC, holds NPDES permit MTR111744, which discharges to Hall Creek. EPA’s file records it issued March 27, 2026 and expiring December 31, 2027. 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 | GROOM/HALL CR – 1M W SWAN LAKE |
|---|---|
| Permittee as filed | RIVERSIDE CONTRACTING INC |
| NPDES ID | MTR111744 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | March 27, 2026 |
| Expiration date | December 31, 2027 |
| Address | Swan Lake, MT 59911 |
| Receiving water | HALL CREEK |
| Subwatershed | Swan Lake (HUC 170102110401) |
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 MTR111744.
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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 23, 2026 | WW Storm Water Construction - Failure to properly install/implement BMPs | ST6 |
| April 23, 2026 | WW Storm Water Construction - Failure to properly operate and maintain BMPs | 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 MTR111744 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.