Clean Water Act discharge permit · NPDES IDR05J12K
MIDFIELD AVIATION, Caldwell, ID: NPDES IDR05J12K discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 20Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MIDFIELD AVIATION, held by Midfield Holdings LLC, holds NPDES permit IDR05J12K, which discharges to Indian Creek. EPA’s file records it issued April 2, 2026 and expiring May 1, 2031. 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 MIDFIELD AVIATION: its NPDES ID, its permit type and status, its dates, its address in Caldwell, Idaho, its receiving water, and 20 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR05J12K.
Identity
| Facility as filed | MIDFIELD AVIATION |
|---|---|
| Permittee as filed | Midfield Holdings LLC |
| NPDES ID | IDR05J12K |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | April 2, 2026 |
| Expiration date | May 1, 2031 |
| Address | Caldwell, ID 83605 |
| Receiving water | Indian Creek |
| Subwatershed | Lower Indian Creek (HUC 170501140507) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 20Pollutants on file
- 20Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Temperature, water deg. centigrade | 1 | 0 | 0 | ||
| Solids, total suspended | 1 | 0 | 0 | ||
| Acenaphthylene | 1 | 0 | 0 | ||
| Acenaphthene | 1 | 0 | 0 | ||
| Anthracene | 1 | 0 | 0 | ||
| Benzo[b]fluoranthene | 1 | 0 | 0 | ||
| Benzo[k]fluoranthene | 1 | 0 | 0 | ||
| Benzo[a]pyrene | 1 | 0 | 0 | ||
| Chrysene | 1 | 0 | 0 | ||
| Fluoranthene | 1 | 0 | 0 | ||
| Fluorene | 1 | 0 | 0 | ||
| Indeno[1,2,3-cd]pyrene | 1 | 0 | 0 | ||
| Phenanthrene | 1 | 0 | 0 | ||
| Pyrene | 1 | 0 | 0 | ||
| Benzo[ghi]perylene | 1 | 0 | 0 | ||
| Benzo[a]anthracene | 1 | 0 | 0 | ||
| Dibenz[a,h]anthracene | 1 | 0 | 0 | ||
| Naphthalene | 1 | 0 | 0 | ||
| E. coli | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES IDR05J12K.
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 IDR05J12K.
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, IDR05J12K.
Start the watch
- 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 IDR05J12K there.
Nearby on the register
- Discharge permits in Caldwell
- Every permit record in Caldwell, A to Z
- Discharge permits in Idaho
- Every permit record in Idaho, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.