Clean Water Act discharge permit · NPDES WAR126743
HILL AEROSYSTEMS, INC., Enumclaw, WA: NPDES WAR126743 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
HILL AEROSYSTEMS, INC., held by Hill Aerosystems Inc, holds NPDES permit WAR126743. EPA’s file records it issued November 20, 2019 and expiring December 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HILL AEROSYSTEMS, INC. |
|---|---|
| Permittee as filed | Hill Aerosystems Inc |
| NPDES ID | WAR126743 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 20, 2019 |
| Expiration date | December 31, 2024 |
| Issuing agency | State |
| Address | Enumclaw, WA 98022 |
| Subwatershed | Newaukum Creek-Green River (HUC 171100130303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 1 | 16 | 7 | December 31, 2022 | 86% over the limit |
| Oil and grease visual | 1 | 11 | 2 | December 31, 2015 | 2,147,483,650% over the limit |
| pH | 2 | 19 | 1 | December 31, 2017 | |
| Zinc, total [as Zn] | 1 | 10 | 1 | December 31, 2022 | 112% over the limit |
| Turbidity | 1 | 9 | 0 | ||
| Total Petroleum Hydrocarbons - Diesel | 1 | 7 | 0 | ||
| Lead, total [as Pb] | 1 | 5 | 0 |
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 WAR126743.
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.
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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 WAR126743 there.
Nearby on the register
- Discharge permits in Enumclaw
- Every permit record in Enumclaw, A to Z
- Discharge permits in Washington
- Every permit record in Washington, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.