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Clean Water Act discharge permit · NPDES IDR10L0F1

CALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP., Caldwell, ID: NPDES IDR10L0F1 discharge permit, effluent exceedances, inspections, penalties

CALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP., held by Idaho Materials & Construction, holds NPDES permit IDR10L0F1.

CALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP., Caldwell, Idaho: Coverage under a general permit IDR10L0F1, held by Idaho Materials & Construction; Not needed.

Other permits held by Idaho Materials & Construction

CALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP. among its neighbors

EPA’s permit file holds 360 discharge permits in the Mason Creek subwatershed (HUC 170501140407), IDR10L0F1 among them.

Other permits in the Mason Creek subwatershed (HUC 170501140407)

What the register holds for CALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP.: its NPDES ID, its permit type and status, its its address in Caldwell, Idaho. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10L0F1.

Identity

Facility as filedCALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP.
Permittee as filedIdaho Materials & Construction
NPDES IDIDR10L0F1
Permit statusNot needed
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
AddressCaldwell, ID 83605
SubwatershedMason Creek (HUC 170501140407)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDR10L0F1.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10L0F1.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10L0F1.

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 IDR10L0F1.

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, IDR10L0F1.

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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

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Nearby on the register

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

What this page shows

9.1% of the 11 general permit coverages in Caldwell carry a violation on file, and CALDWELL EXEC. AIRPORT TAXIWAY B-3, B, & APRON EXP. is part of that group. EPA's NPDES register lists 11 general permit coverages for Caldwell in total. The Mason Creek subwatershed holds 360 NPDES permits, counting this permit.