Clean Water Act discharge permit · NPDES WAR313249
CEDAR HILLS REGIONAL LANDFILL, Maple Valley, WA: NPDES WAR313249 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
CEDAR HILLS REGIONAL LANDFILL, held by King County, DNRP, Solid Waste Division, holds NPDES permit WAR313249. EPA’s file records it issued November 18, 2020 and expiring December 31, 2025. 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 | CEDAR HILLS REGIONAL LANDFILL |
|---|---|
| Permittee as filed | King County, DNRP, Solid Waste Division |
| NPDES ID | WAR313249 |
| 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 |
| Program | Construction stormwater |
| Issued | November 18, 2020 |
| Expiration date | December 31, 2025 |
| Issuing agency | State |
| Address | Maple Valley, WA 98038 |
| Subwatershed | Madsen Creek-Cedar River (HUC 171100120106) |
| Other EPA IDs (FRS) | RCRA handler WAD981770118; ICIS-AIR source WAPSC0005303300101 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 28Pollutants on file
- 2Under a numeric limit
- 27With 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 |
|---|---|---|---|---|---|
| Turbidity | 4 | 3 | 3 | November 30, 2025 | |
| Arsenic, total [as As] | 0 | 1 | 0 | ||
| Cadmium, total [as Cd] | 0 | 1 | 0 | ||
| Chromium, total [as Cr] | 0 | 1 | 0 | ||
| Lead, total [as Pb] | 0 | 1 | 0 | ||
| Selenium, total [as Se] | 0 | 1 | 0 | ||
| 4-Isopropyltoluene | 0 | 1 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 0 | 1 | 0 | ||
| Acenaphthene | 0 | 1 | 0 | ||
| Fluorene | 0 | 1 | 0 | ||
| Methyl bromide [Bromomethane] | 0 | 1 | 0 | ||
| Phenanthrene | 0 | 1 | 0 | ||
| Benzo[ghi]perylene | 0 | 1 | 0 | ||
| Naphthalene | 0 | 1 | 0 | ||
| 2-Chlorotoluene | 0 | 1 | 0 | ||
| Total Petroleum Hydrocarbons - Diesel | 0 | 1 | 0 | ||
| Total Petroleum Hydrocarbons - Gasoline | 0 | 1 | 0 | ||
| 4-Chlorotoluene | 0 | 1 | 0 | ||
| 1,2,4-Trimethylbenzene | 0 | 1 | 0 | ||
| n-Propylbenzene | 0 | 1 | 0 | ||
| 1,3,5-Trimethylbenzene | 0 | 1 | 0 | ||
| n-Butylbenzene | 0 | 1 | 0 | ||
| 2-Methylnaphthalene | 0 | 1 | 0 | ||
| 1-Methylnaphthalene | 0 | 1 | 0 | ||
| 4-Methyl-2-pentanone | 0 | 1 | 0 | ||
| Acetone | 0 | 1 | 0 | ||
| Methyl ethyl ketone | 0 | 1 | 0 | ||
| pH | 8 | 0 | 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 WAR313249.
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| August 17, 2026 | Evaluation | S |
| June 10, 2026 | Evaluation | S |
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 WAR313249.
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, WAR313249.
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 WAR313249 there.
Nearby on the register
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- Every permit record in Maple Valley, A to Z
- Discharge permits in Washington
- Every permit record in Washington, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.