Clean Water Act discharge permit · NPDES IDR10L01E
IDAHO POWER COLUMBIA SUBSTATION, Meridian, ID: NPDES IDR10L01E discharge permit, effluent exceedances, inspections, penalties
- Not neededPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
IDAHO POWER COLUMBIA SUBSTATION, held by Knife River Corporation - Mountain West, holds NPDES permit IDR10L01E. EPA’s file records it issued November 17, 2021 and expiring March 31, 2022.
IDAHO POWER COLUMBIA SUBSTATION, Meridian, Idaho: Coverage under a general permit IDR10L01E, held by Knife River Corporation - Mountain West; Construction stormwater; Not needed; issued November 17, 2021, term to March 31, 2022.
Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file; 490 were issued before IDR10L01E. Knife River Corporation - Mountain West holds 56 permits in Idaho.
Other permits held by Knife River Corporation - Mountain West
- CASCADE PIT, Cascade: IDR05J01R, issued June 22, 2021
- US-30, E 4000 NORTH ROAD, Filer: IDR10016Q
- SH-51, MOUNTAIN HOME SOUTH RESTORATION, Mountain Home: IDR10017K
- GREENHURST RD. AND ELIJAH DRAIN CULVERT REPAIR, Nampa: IDR10017L
- LANCASTER TERRACES/N. MOUNTAIN PIPING UPGRADES, Boise: IDR1001A0
- BLACKS CREEK HILLSIDE DEVELOPMENT PROJECT, Boise: IDR1001B7
- ENCORE SUBDIVISION, Boise: IDR1001D6
- ADA COUNTY GLENWOOD EMS PARKING LOT RECONSTRUCTION AND DRAINAGE, Garden City: IDR1001E2
- QUAIL HOLLOW GOLF COURSE PATH DEVELOPMENT, Boise: IDR1001F5
- SEWER LINE REPLACEMENT AT GREGORY LIFT STATION, Meridian: IDR1001KK
Coverages issued nearest IDR10L01E
- November 17, 2021: THE GROVE & GIETZEN SUBDIVISIONS, Buhl, IDR10C03Q, held by Idaho Materials and Construction
- November 17, 2021: SKYBREAK SUBDIVISION, Meridian, IDR10C03R, held by Conger Group
- November 17, 2021: SKYBREAK SUBDIVISION, Meridian, IDR10C03S, held by GL20, LLC
- November 17, 2021: ST JOHN BOSCO ACADEMY, Cottonwood, IDR10C03T, held by Arnzen Building Construction
- November 17, 2021: BIRCH LIFT STATION & FORCE MAIN, Caldwell, IDR10L01D, held by Knife River Corporation - Mountain West
- November 19, 2021: EASTFIELD SUBDIVISION, Eagle, IDR10C03V, held by Schneider Custom Homes
- November 19, 2021: CUMBERLAND 6, Caldwell, IDR10C03X, held by John Evans
- November 19, 2021: CANDAU SOUTH SUB, Star, IDR10C03Y, held by Toll Bros., Inc.
- November 22, 2021: HYATT PLACE, Meridian, IDR10C03Z, held by Headwaters
- November 22, 2021: SPARROW HILL, Idaho Falls, IDR10C040, held by Headwaters
IDAHO POWER COLUMBIA SUBSTATION among its neighbors
EPA’s permit file holds 360 discharge permits in the Mason Creek subwatershed (HUC 170501140407), IDR10L01E among them.
Other permits in the Mason Creek subwatershed (HUC 170501140407)
- 10 MILE RETAIL, Meridian: IDR10037Z, not classed
- 1209 ANDY LANE TRUCK YARD, Caldwell: IDR1002I9, not classed
- 17270 NORTHSIDE BOULEVARD, Nampa: IDR10L0KV, not classed
- 22102 FRANKLIN BLVD & KARCHER RD INT, Nampa: IDR10L0E1, not classed
- 4-LOT FLEX BUILDING SUBDIVISION, Caldwell: IDR1002R2, not classed
- 500 LATERAL RELOCATION, Caldwell: IDR10026E, not classed
- 620 N. 39TH STREET NORTH BUILDING, Nampa: IDR10L07V, not classed
- ABC ROOFING SUPPLY COMPANY, Nampa: IDR1000K1, not classed
- ADAMS RIDGE APARTMENTS, Nampa: IDR10C27V, minor permit, discharging to Mason Creek, permit term to February 9, 2027
- ADAMS RIDGE SUBDIVISION NO 7, Nampa: IDR10C0UC, minor permit, discharging to MIDDLE LATERAL, permit term to February 9, 2027
What the register holds for IDAHO POWER COLUMBIA SUBSTATION: its NPDES ID, its permit type and status, its dates, its address in Meridian, Idaho. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10L01E.
Identity
| Facility as filed | IDAHO POWER COLUMBIA SUBSTATION |
|---|---|
| Permittee as filed | Knife River Corporation - Mountain West |
| NPDES ID | IDR10L01E |
| 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 |
| Issued | November 17, 2021 |
| Expiration date | March 31, 2022 |
| Address | Meridian, ID 83642 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mason Creek (HUC 170501140407) |
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 IDR10L01E.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10L01E.
Inspections
EPA’s inspection file holds no inspection for NPDES IDR10L01E.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES IDR10L01E.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.