Clean Water Act discharge permit · NPDES WAG641025
CASTLE ROCK WTP, Castle Rock, WA: NPDES WAG641025 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CASTLE ROCK WTP holds NPDES permit WAG641025. EPA’s file records it issued July 15, 2009 and expiring August 31, 2014.
CASTLE ROCK WTP, Castle Rock, Washington: Coverage under a general permit WAG641025; Administratively continued (past its expiration date and still in force until reissued); issued July 15, 2009, term to August 31, 2014, by State.
- Solids, settleable: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest October 31, 2014, largest 99,999% over the limit.
- Arsenic, dissolved [as As]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Arsenic, total [as As]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
CASTLE ROCK WTP among its neighbors
EPA’s permit file holds 3 discharge permits in the Whittle Creek-Cowlitz River subwatershed (HUC 170800050904), WAG641025 among them. Its county holds 174, 5 of them major permits; WAG641025 is a minor permit.
Other permits in the Whittle Creek-Cowlitz River subwatershed (HUC 170800050904)
- CASTLE ROCK SAND AND GRAVEL, Castle Rock: WAG501615, minor permit, permit term to March 31, 2031
- CHARBONEAU TRUCKING, Toledo: WAR315203, minor permit, permit term to December 31, 2030
Identity
| Facility as filed | CASTLE ROCK WTP |
|---|---|
| Permittee as filed | CASTLE ROCK WTP |
| NPDES ID | WAG641025 |
| 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 | July 15, 2009 |
| Expiration date | August 31, 2014 |
| Issuing agency | State |
| Address | Castle Rock, WA 98611 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Whittle Creek-Cowlitz River (HUC 170800050904) |
| SIC | 4941 – Water Supply |
| Other EPA IDs (FRS) | RCRA handler WAH000034884 |
Effluent limits and exceedances
- 3Pollutants on file
- 0Under a numeric limit
- 3With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Solids, settleable | 0 | 2 | 2 | October 31, 2014 | 99,999% over the limit |
| Arsenic, dissolved [as As] | 0 | 2 | 0 | ||
| Arsenic, total [as As] | 0 | 2 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WAG641025.
Inspections
EPA’s inspection file holds no inspection for NPDES WAG641025.
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 WAG641025.
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- Discharge permits in Castle Rock
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.