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Clean Water Act discharge permit · NPDES IDR10C12H

BLACK POWDER SUBDIVISION, Middleton, ID: NPDES IDR10C12H discharge permit, effluent exceedances, inspections, penalties

BLACK POWDER SUBDIVISION, held by Toll Bros., Inc., holds NPDES permit IDR10C12H, which discharges to C-Line Canal East. EPA’s file records it issued January 10, 2022 and expiring February 9, 2027.

BLACK POWDER SUBDIVISION, Middleton, Idaho: Coverage under a general permit IDR10C12H, held by Toll Bros., Inc.; Construction stormwater; Effective; issued January 10, 2022, term to February 9, 2027; discharges to C-Line Canal East.

Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file; 576 were issued before IDR10C12H. Toll Bros., Inc. holds 9 permits in Idaho.

Other permits held by Toll Bros., Inc.

Coverages issued nearest IDR10C12H

BLACK POWDER SUBDIVISION among its neighbors

EPA’s permit file holds 27 discharge permits in the Hartley Gulch subwatershed (HUC 170501140409), IDR10C12H among them. Its county holds 377, 2 of them major permits; IDR10C12H is a minor permit.

Other permits in the Hartley Gulch subwatershed (HUC 170501140409)

What the register holds for BLACK POWDER SUBDIVISION: its NPDES ID, its permit type and status, its dates, its address in Middleton, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C12H.

Identity

Facility as filedBLACK POWDER SUBDIVISION
Permittee as filedToll Bros., Inc.
NPDES IDIDR10C12H
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
AddressMiddleton, ID 83644
Receiving waterC-Line Canal East
SubwatershedHartley Gulch (HUC 170501140409)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDR10C12H.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C12H.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10C12H.

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 IDR10C12H.

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, IDR10C12H.

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Nearby on the register

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

What this page shows

Of the 308 storm water construction permits in Canyon County, 0.0% carry a violation on file, and BLACK POWDER SUBDIVISION is part of that group. The Hartley Gulch subwatershed (HUC 170501140409) lists 27 NPDES permits. Of the 269 storm water construction permits in Canyon County, 10.0% have an earlier issue date than BLACK POWDER SUBDIVISION.