Clean Water Act discharge permit · NPDES IDR10C22Z

21951 US93 3250N TO 3800N (WCI), Filer, ID: NPDES IDR10C22Z discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

21951 US93 3250N TO 3800N (WCI), held by Western Construction Inc, holds NPDES permit IDR10C22Z, which discharges to Lateral 153. EPA’s file records it issued January 10, 2022 and expiring February 9, 2027.

21951 US93 3250N TO 3800N (WCI), Filer, Idaho: Coverage under a general permit IDR10C22Z, held by Western Construction Inc; Construction stormwater; Effective; issued January 10, 2022, term to February 9, 2027; discharges to Lateral 153.

Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file; 576 were issued before IDR10C22Z.

Coverages issued nearest IDR10C22Z

January 10, 2022: TURNSTONE, Sandpoint, IDR10C22U, held by EVL Construction
January 10, 2022: BLACKFOOT HIGH SCHOOL, Blackfoot, IDR10C22V, held by Headwaters Construction
January 10, 2022: SHOSHONI PLAINS VI, Driggs, IDR10C22W, held by Matkin Brothers Excavation
January 10, 2022: PINNACLE SUBDIVISION DIV. 1, Idaho Falls, IDR10C22X, held by CM Company, Inc.
January 10, 2022: SALAZAR POINT SUBDIVISION, Nampa, IDR10C22Y, held by Value Homes of Idaho
January 10, 2022: WALMART FUEL #2831-1004 JEROME, ID, Jerome, IDR10C230, held by Engineered Structures Inc.
January 10, 2022: MICRON HANGAR II, Boise, IDR10C231, held by Micron Technology, Inc
January 10, 2022: FOREST ST; N MISSION TO STATE, Mccall, IDR10C232, held by City of McCall
January 10, 2022: WWTP IMPROVEMENTS, Star, IDR10C233, held by IMCO General Construction
January 10, 2022: JACKSONS FOOD STORES, INC. STORE #244 NAMPA, Nampa, IDR10C234, held by Pacific North Contractors

21951 US93 3250N TO 3800N (WCI) among its neighbors

EPA’s permit file holds 22 discharge permits in the Outlet Rock Creek subwatershed (HUC 170402120608), IDR10C22Z among them. Its county holds 108, 1 of them major permits; IDR10C22Z is a minor permit.

Other permits in the Outlet Rock Creek subwatershed (HUC 170402120608)

2017 GRANDVIEW SEWER & CORROSION RESISTANT MANHOLES, Twin Falls: IDR1000LH, not classed
BLIND CANYON AQUARANCH INC - TUPPER SPRINGS, Hagerman: IDG130131, minor permit, discharging to BILLINGSLEY CREEK, permit term to September 10, 2004
CONAGRA FOODS LAMB WESTON INC, Twin Falls: IDR05C169, not classed, discharging to ROCK CREEK
DAYDREAM RANCH, Twin Falls: IDG130084, minor permit, discharging to ROCK CREEK, permit term to September 10, 2004
DEADMAN'S GULCH FISH HATCHERY, Twin Falls: IDG130091, minor permit, discharging to ROCK CREEK VIA UNNAMED SEEP STREAM, permit term to September 10, 2004
EL MILAGRO HOMES, Twin Falls: IDR10C0TX, minor permit, discharging to K COULEE, permit term to February 9, 2027
EL MILAGRO PHASE I, Twin Falls: IDR1002KQ, minor permit, permit term to February 15, 2022
GOLDEN EAGLE SUBDIVISION NO. 7, Twin Falls: IDR10C0VN, minor permit, discharging to Low Line Canal, permit term to February 9, 2027
GORDON PAVING COMPANY INC, Twin Falls: IDR10B685, not classed, discharging to ROCK CREEK TO SNAKE RIVER
HARRISON ST SCHOOL SIDEWALKS PROJECT, Twin Falls: IDR1002MX, not classed

What the register holds for 21951 US93 3250N TO 3800N (WCI): its NPDES ID, its permit type and status, its dates, its address in Filer, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C22Z.

Identity

Facility as filed	21951 US93 3250N TO 3800N (WCI)
Permittee as filed	Western Construction Inc
NPDES ID	IDR10C22Z
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	January 10, 2022
Expiration date	February 9, 2027
Address	Filer, ID 83328
Receiving water	Lateral 153
Subwatershed	Outlet Rock Creek (HUC 170402120608)

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 IDR10C22Z.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C22Z.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10C22Z.

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 IDR10C22Z.

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, IDR10C22Z.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

21951 US93 3250N TO 3800N (WCI) is among the 59 storm water construction permits in Twin Falls County, and 0.0% of those have a violation on file. The Outlet Rock Creek subwatershed holds 22 NPDES permits, including this permit, and 7.1% of the 28 storm water construction permits in Twin Falls County were issued before this permit.