Clean Water Act discharge permit · NPDES IDR10CE21
IDAHO POWER COMPANY - LANGLEY GULCH POWER PLANT, New Plymouth, ID: NPDES IDR10CE21 discharge permit, effluent exceedances, inspections, penalties
- PendingPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
IDAHO POWER COMPANY - LANGLEY GULCH POWER PLANT, held by IDAHO POWER COMPANY, holds NPDES permit IDR10CE21, which discharges to A-Line Canal To Snake River. 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 IDAHO POWER COMPANY - LANGLEY GULCH POWER PLANT: its NPDES ID, its permit type and status, its its address in New Plymouth, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10CE21.
Identity
| Facility as filed | IDAHO POWER COMPANY - LANGLEY GULCH POWER PLANT |
|---|---|
| Permittee as filed | IDAHO POWER COMPANY |
| NPDES ID | IDR10CE21 |
| Permit status | Pending |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issuing agency | U.S. EPA, REGION 10 |
| Address | New Plymouth, ID 83655 |
| Receiving water | A-LINE CANAL TO SNAKE RIVER |
| Subwatershed | Big Willow Creek-Payette River (HUC 170501220904) |
| Other EPA IDs (FRS) | RCRA handler IDR000206938; ICIS-AIR source ID0000001607500012 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
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 IDR10CE21.
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 IDR10CE21.
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, IDR10CE21.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 IDR10CE21 there.
Nearby on the register
- Discharge permits in New Plymouth
- Every permit record in New Plymouth, A to Z
- Discharge permits in Idaho
- Every permit record in Idaho, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.