Clean Water Act discharge permit · NPDES IDR10018T
US-12 WARM SPRINGS TO MONTANA ST LINE & TUMBLE CREEK TO SADDLE CAMP RD., Kooskia, ID: NPDES IDR10018T discharge permit, effluent exceedances, inspections, penalties
- Not neededPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
US-12 WARM SPRINGS TO MONTANA ST LINE & TUMBLE CREEK TO SADDLE CAMP RD., held by Knife River Corporation - Northwest, holds NPDES permit IDR10018T. 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 US-12 WARM SPRINGS TO MONTANA ST LINE & TUMBLE CREEK TO SADDLE CAMP RD.: its NPDES ID, its permit type and status, its its address in Kooskia, Idaho. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10018T.
Identity
| Facility as filed | US-12 WARM SPRINGS TO MONTANA ST LINE & TUMBLE CREEK TO SADDLE CAMP RD. |
|---|---|
| Permittee as filed | Knife River Corporation - Northwest |
| NPDES ID | IDR10018T |
| Permit status | Not needed |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Address | Kooskia, ID 83593 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Walton Creek-Lochsa River (HUC 170603030301) |
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 IDR10018T.
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 IDR10018T.
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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- One watershed — $2,990/year
- One state — $4,990/year
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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 IDR10018T there.
Nearby on the register
- Discharge permits in Kooskia
- Every permit record in Kooskia, A to Z
- Discharge permits in Idaho
- Every permit record in Idaho, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.