Clean Water Act discharge permit · NPDES MTR111997
CAPITAL HIGH SCHOOL, Helena, MT: NPDES MTR111997 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CAPITAL HIGH SCHOOL, held by Gruber Excavating, holds NPDES permit MTR111997, which discharges to Tenmile Creek. EPA’s file records it issued August 20, 2026 and expiring December 31, 2027. 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.
What the register holds for CAPITAL HIGH SCHOOL: its NPDES ID, its permit type and status, its dates, its address in Helena, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111997.
Identity
| Facility as filed | CAPITAL HIGH SCHOOL |
|---|---|
| Permittee as filed | Gruber Excavating |
| NPDES ID | MTR111997 |
| 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 | August 20, 2026 |
| Expiration date | December 31, 2027 |
| Address | Helena, MT 59601 |
| Receiving water | TENMILE CREEK |
| Subwatershed | Lower Tenmile Creek (HUC 100301011406) |
| SIC | 9199 – General Government |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same 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 MTR111997.
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 MTR111997.
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 MTR111997 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.