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Clean Water Act discharge permit · NPDES IDR10C20G

23239 EMERALD CREEK TO FOSSIL BOWL, Clarkia, ID: NPDES IDR10C20G discharge permit, effluent exceedances, inspections, penalties

23239 EMERALD CREEK TO FOSSIL BOWL, held by Idaho Transportation Department, holds NPDES permit IDR10C20G, which discharges to St Maries River. EPA’s file records it issued January 10, 2022 and expiring February 9, 2027.

23239 EMERALD CREEK TO FOSSIL BOWL, Clarkia, Idaho: Coverage under a general permit IDR10C20G, held by Idaho Transportation Department; Construction stormwater; Effective; issued January 10, 2022, term to February 9, 2027; discharges to St Maries River; Highway, Street, and Bridge Construction.

Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file; 576 were issued before IDR10C20G. Idaho Transportation Department holds 28 permits in Idaho.

Other permits held by Idaho Transportation Department

Coverages issued nearest IDR10C20G

23239 EMERALD CREEK TO FOSSIL BOWL among its neighbors

EPA’s permit file holds 2 discharge permits in the Olson Creek-St Maries River subwatershed (HUC 170103040802), IDR10C20G among them. Its county holds 31, 3 of them major permits; IDR10C20G is a minor permit.

Other permits in the Olson Creek-St Maries River subwatershed (HUC 170103040802)

What the register holds for 23239 EMERALD CREEK TO FOSSIL BOWL: its NPDES ID, its permit type and status, its dates, its address in Clarkia, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C20G.

Identity

Facility as filed23239 EMERALD CREEK TO FOSSIL BOWL
Permittee as filedIdaho Transportation Department
NPDES IDIDR10C20G
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJanuary 10, 2022
Expiration dateFebruary 9, 2027
AddressClarkia, ID 83812
Receiving waterSt Maries River
SubwatershedOlson Creek-St Maries River (HUC 170103040802)
NAICS237310 – Highway, Street, and Bridge Construction
SIC1611 – Highway And Street Construction

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDR10C20G.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C20G.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10C20G.

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 IDR10C20G.

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, IDR10C20G.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

The Olson Creek-St Maries River subwatershed (HUC 170103040802) holds 2 NPDES permits, counting 23239 EMERALD CREEK TO FOSSIL BOWL. EPA's NPDES register lists 11 storm water construction permits in Shoshone County, this permit included.