Clean Water Act discharge permit · NPDES WAG505142
THAYER EXCAVATING LLC, Ellensburg, WA: NPDES WAG505142 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 3Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
THAYER EXCAVATING LLC, held by Thayer Excavating LLC, holds NPDES permit WAG505142. EPA’s file records it issued February 17, 2021 and expiring March 31, 2026. 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.
Identity
| Facility as filed | THAYER EXCAVATING LLC |
|---|---|
| Permittee as filed | Thayer Excavating LLC |
| NPDES ID | WAG505142 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 17, 2021 |
| Expiration date | March 31, 2026 |
| Issuing agency | State |
| Address | Ellensburg, WA 98926 |
| Subwatershed | Manastash Creek-Yakima River (HUC 170300010511) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 3Pollutants on file
- 3Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| pH | 4 | 4 | 0 | ||
| Turbidity | 3 | 3 | 0 | ||
| Oil and grease visual | 2 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WAG505142.
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 WAG505142.
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
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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 WAG505142 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.