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Clean Water Act discharge permit · NPDES IDR10C239

MAGNOLIA ESTATES SUBDIVISION NO. 2, Nampa, ID: NPDES IDR10C239 discharge permit, effluent exceedances, inspections, penalties

MAGNOLIA ESTATES SUBDIVISION NO. 2, held by Trilogy Development, Inc., holds NPDES permit IDR10C239, which discharges to Mason Creek. 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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for MAGNOLIA ESTATES SUBDIVISION NO. 2: its NPDES ID, its permit type and status, its dates, its address in Nampa, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C239.

Identity

Facility as filedMAGNOLIA ESTATES SUBDIVISION NO. 2
Permittee as filedTrilogy Development, Inc.
NPDES IDIDR10C239
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
AddressNampa, ID 83687
Receiving waterMason Creek
Receiving water impaired303(D) Listed
SubwatershedMason Creek (HUC 170501140407)
NAICS236115 – New Single-Family Housing Construction [except For-Sale Builders]
SIC1521 – Single-Family Housing Construction

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDR10C239.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C239.

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, IDR10C239.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 IDR10C239 there.

Nearby on the register

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

What this page shows

MAGNOLIA ESTATES SUBDIVISION NO. 2 sits in Canyon County, where 0.0% of the 308 storm water construction permits have a violation on file. The Mason Creek subwatershed (HUC 170501140407) counts 360 NPDES permits, this permit among them. Of the 269 storm water construction permits in Canyon County, 10.0% carry an earlier issue date than this permit, counting this permit.