Clean Water Act discharge permit · NPDES IDR10C24Q

PAHSIMEROI RIVER & SULPHUR CREEK, May, ID: NPDES IDR10C24Q 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

PAHSIMEROI RIVER & SULPHUR CREEK, held by Dahle Construction, holds NPDES permit IDR10C24Q, which discharges to Pahsimeroi River. EPA’s file records it issued January 10, 2022 and expiring February 9, 2027.

PAHSIMEROI RIVER & SULPHUR CREEK, May, Idaho: Coverage under a general permit IDR10C24Q, held by Dahle Construction; Effective; issued January 10, 2022, term to February 9, 2027; discharges to Pahsimeroi River.

Other permits held by Dahle Construction

COLE RANCH GRAVEL PIT, Salmon: IDR05J10P, issued October 27, 2022

PAHSIMEROI RIVER & SULPHUR CREEK among its neighbors

EPA’s permit file holds 8 discharge permits in the Lower Patterson Creek-Pahsimeroi River subwatershed (HUC 170602020313), IDR10C24Q among them. Its county holds 26, 1 of them major permits; IDR10C24Q is a minor permit.

Other permits in the Lower Patterson Creek-Pahsimeroi River subwatershed (HUC 170602020313)

IDFG PAHSIMEROI STATE FISH HATCHERY, May: IDG131007, minor permit, discharging to PAHSIMEROI RIVER, SALMON RIVER, permit term to November 30, 2012
LAST CHANCE MODIFICATION 1, Ellis: IDR10L0DT, not classed
LAST CHANCE PHASE 1 HABITAT, Ellis: IDR10L098, not classed
LAST CHANCE RANCH SPRING CREEK, May: IDR10039V, not classed
LAST CHANCE SPRINGS PHASE 2, May: IDR10L04K, not classed
LITTLE SPRINGS CREEK INSTREAM HABITAT IMPROVEMENT, May: IDR10039U, not classed
RIVER VALLEY RANCH, Ellis: IDR10L0MT, not classed

What the register holds for PAHSIMEROI RIVER & SULPHUR CREEK: its NPDES ID, its permit type and status, its dates, its address in May, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C24Q.

Identity

Facility as filed	PAHSIMEROI RIVER & SULPHUR CREEK
Permittee as filed	Dahle Construction
NPDES ID	IDR10C24Q
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	January 10, 2022
Expiration date	February 9, 2027
Address	May, ID 83253
Receiving water	Pahsimeroi River
Subwatershed	Lower Patterson Creek-Pahsimeroi River (HUC 170602020313)

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 IDR10C24Q.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C24Q.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10C24Q.

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 IDR10C24Q.

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, IDR10C24Q.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

Of the 9 general permit coverages in Lemhi County, 11.1% carry a recorded violation, and PAHSIMEROI RIVER & SULPHUR CREEK in May, held by Dahle Construction, is counted among them. The Lower Patterson Creek-Pahsimeroi River subwatershed holds 8 NPDES permits, this permit included.