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Clean Water Act discharge permit · NPDES IDR10L087

2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE, Mayfield, ID: NPDES IDR10L087 discharge permit, effluent exceedances, inspections, penalties

2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE, held by Ada County Highway District, holds NPDES permit IDR10L087. 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 2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE: its NPDES ID, its permit type and status, its its address in Mayfield, Idaho. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10L087.

Identity

Facility as filed2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE
Permittee as filedAda County Highway District
NPDES IDIDR10L087
Permit statusNot needed
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
AddressMayfield, ID 83716
Receiving water impaired303(D) Listed
SubwatershedBlacks Creek (HUC 170501140201)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDR10L087.

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 IDR10L087.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10L087.

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 IDR10L087.

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, IDR10L087.

Start the watch

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 IDR10L087 there.

2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE, Mayfield, Idaho: Coverage under a general permit IDR10L087, held by Ada County Highway District; Construction stormwater; Not needed.

Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file. Ada County Highway District holds 36 permits in Idaho.

Other permits held by Ada County Highway District

2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE among its neighbors

EPA’s permit file holds 2 discharge permits in the Blacks Creek subwatershed (HUC 170501140201), IDR10L087 among them.

Other permits in the Blacks Creek subwatershed (HUC 170501140201)

Nearby on the register

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

What this page shows

Mayfield's register holds 1 storm water construction permit, and 2023 ARTERIAL & COLLECTOR CAPITAL MAINTENANCE is that permit. The Blacks Creek subwatershed includes 2 NPDES permits. Its permittee is filed as Ada County Highway District.