Clean Water Act discharge permit · NPDES IDR10C1KX

TRAPPER RIDGE SUBDIVISION NO. 4 (CHALLENGER), Star, ID: NPDES IDR10C1KX discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

TRAPPER RIDGE SUBDIVISION NO. 4 (CHALLENGER), held by Challenger Development, Inc., holds NPDES permit IDR10C1KX, which discharges to Farmers Union Canal. EPA’s file records it issued January 10, 2022 and expiring February 9, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for TRAPPER RIDGE SUBDIVISION NO. 4 (CHALLENGER): its NPDES ID, its permit type and status, its dates, its address in Star, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C1KX.

Identity

Facility as filed	TRAPPER RIDGE SUBDIVISION NO. 4 (CHALLENGER)
Permittee as filed	Challenger Development, Inc.
NPDES ID	IDR10C1KX
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	Star, ID 83669
Receiving water	Farmers Union Canal
Subwatershed	Mill Slough-Boise River (HUC 170501140410)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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 IDR10C1KX.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C1KX.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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, IDR10C1KX.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IDR10C1KX there.

Nearby on the register

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

Of the 47 storm water construction permits in Star on EPA's NPDES register, 0.0% have a violation recorded against them, and TRAPPER RIDGE SUBDIVISION NO. 4 (CHALLENGER) is in that group. Among the 34 storm water construction permits in Star, including this permit, 70.6% carry an earlier issue date, and the Mill Slough-Boise River subwatershed (HUC 170501140410) holds 197 NPDES permits.