Clean Water Act discharge permit · NPDES WAR311478
INTERBAY CONVEYANCE REHAB AND ODOR CONTROL, Seattle, WA: NPDES WAR311478 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 46Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
INTERBAY CONVEYANCE REHAB AND ODOR CONTROL, held by King County WTD, holds NPDES permit WAR311478. EPA’s file records it issued November 18, 2020 and expiring December 31, 2025.
INTERBAY CONVEYANCE REHAB AND ODOR CONTROL, Seattle, Washington: Coverage under a general permit WAR311478, held by King County WTD; Construction stormwater; Administratively continued (past its expiration date and still in force until reissued); issued November 18, 2020, term to December 31, 2025, by State.
- Copper, total [as Cu]: 1 limit, 12 violations of any kind, 3 effluent exceedances, latest December 31, 2025, largest 305% over the limit.
- Turbidity: 4 limits, 39 violations of any kind, 2 effluent exceedances, latest December 31, 2024.
- Di-n-butyl phthalate: 1 limit, 10 violations of any kind, 1 effluent exceedance, latest February 28, 2025, largest 2,433% over the limit.
- Total Petroleum Hydrocarbons - Diesel: 1 limit, 10 violations of any kind, 1 effluent exceedance, latest February 28, 2025, largest 177% over the limit.
- Dibenzofuran, dry weight: 1 limit, 10 violations of any kind, 1 effluent exceedance, latest February 28, 2025, largest 2,370% over the limit.
- Carbazole: 1 limit, 10 violations of any kind, 1 effluent exceedance, latest February 28, 2025, largest 970% over the limit.
- pH: 8 limits, 44 violations of any kind, 0 effluent exceedances.
- Transparency: 4 limits, 39 violations of any kind, 0 effluent exceedances.
- Arsenic, total [as As]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Barium, total [as Ba]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chromium, total [as Cr]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Silver, total [as Ag]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Selenium, total [as Se]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- 4-Isopropyltoluene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Benzene, ethylbenzene, toluene, xylene combination: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chloroform: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Acenaphthene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Anthracene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Benzo[b]fluoranthene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Benzo[k]fluoranthene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Benzo[a]pyrene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chlorobenzene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chrysene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Fluoranthene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Fluorene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Indeno[1,2,3-cd]pyrene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Phenanthrene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Pyrene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Benzo[ghi]perylene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Benzo[a]anthracene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- 1,2-Dichloropropane: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Dibenz[a,h]anthracene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- 1,4-Dichlorobenzene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Naphthalene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Di[2-ethylhexyl] phthalate [DEHP]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Total Petroleum Hydrocarbons - Gasoline: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Mercury, total [as Hg]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- 1,2,4-Trimethylbenzene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Isopropylbenzene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- n-Butylbenzene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- 2-Methylnaphthalene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- 1-Methylnaphthalene: 1 limit, 9 violations of any kind, 0 effluent exceedances.
Washington holds 4,744 Construction stormwater coverages of this permit type in EPA’s file; 1,658 were issued before WAR311478. King County WTD holds 3 permits in Washington.
Other permits held by King County WTD
- INTERBAY 36 INCH FORCEMAINS REPLACEMENT PROJECT, Seattle: WAR310674, issued November 18, 2020
- LAKE HILLS TRUNK X NW LAKE SAMMAMISH INTERCEPTOR SEWER UPGRADE, Redmond: WAR313835, issued November 18, 2020
Coverages issued nearest WAR311478
- November 18, 2020: 913 NEVADA ST, Bellingham, WAR311464, held by DJ & DJ Contracting
- November 18, 2020: PACIFIC DREAM SEAFOOD, Burlington, WAR311470, held by Chad Fisher Construction LLC
- November 18, 2020: JSP SILVERDALE MIXED USE DEVELOPMENT, Silverdale, WAR311475, held by Jackson Square Properties
- November 18, 2020: 2154 BUCHANAN LOOP, Ferndale, WAR311476, held by Matia Contractors
- November 18, 2020: HABITAT TUMWATER TOWNHOMES, Tumwater, WAR311477, held by South Puget Sound Habitat for Humanity
- November 18, 2020: RIVER RIDGE HIGH SCHOOL, Lacey, WAR311480, held by Absher Construction Company
- November 18, 2020: BAKERVIEW, Stanwood, WAR311496, held by Bakerview-Stanwood, LLC
- November 18, 2020: STARKEL ESTATES, Puyallup, WAR311499, held by Century Communities of Washington, LLC
- November 18, 2020: B&G SUBDIVISION, Battle Ground, WAR311500, held by LGI Homes
- November 18, 2020: BRUNTSFIELD, Lynnwood, WAR311508, held by 2003-WLD Bruntsfield, LLC
INTERBAY CONVEYANCE REHAB AND ODOR CONTROL among its neighbors
EPA’s permit file holds 99 discharge permits in the Puget Sound subwatershed (HUC 171100191200), WAR311478 among them.
Other permits in the Puget Sound subwatershed (HUC 171100191200)
- 2015A WASTEWATER REPLACEMENTS, Tacoma: WAR302606, minor permit, permit term to December 31, 2015
- ALASKA PACKAGING LUMBER, Tacoma: WAR304459, minor permit, permit term to December 31, 2024
- ALON ASPHALT CO RICHMOND BEACH TERMINAL, Edmonds: WA0031704, minor permit, permit term to September 30, 2022
- AMERICAN CONSTRUCTION CO., INC., Tacoma: WAR308855, minor permit, permit term to December 31, 2024
- AMTRAK PACIFIC NORTHWEST MAINTENANCE FACILITY, Seattle: WAR314450, minor permit, permit term to December 31, 2025
- AMTRAK RAILROAD KING ST MAINTENANCE, Seattle: WAR003235, minor permit, permit term to December 31, 2024
- ARBOR HEIGHTS ELEMENTARY SCHOOL DEMO, Seattle: WAR301964, minor permit, permit term to December 31, 2014
- ARMSTRONG SDAP-SFR, Olalla: WAR312897, minor permit, permit term to December 31, 2025
- ARTEMIS HOTEL, Des Moines: WAR127100, minor permit, permit term to December 31, 2015
- BAINBRIDGE DISPOSAL, Bainbridge Island: WAR311383, minor permit, permit term to December 31, 2024
Identity
| Facility as filed | INTERBAY CONVEYANCE REHAB AND ODOR CONTROL |
|---|---|
| Permittee as filed | King County WTD |
| NPDES ID | WAR311478 |
| 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 | Seattle, WA 98119 |
| Subwatershed | Puget Sound (HUC 171100191200) |
Effluent limits and exceedances
- 46Pollutants on file
- 46Under a numeric limit
- 46With a violation of any kind
- 6With 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 | 12 | 3 | December 31, 2025 | 305% over the limit |
| Turbidity | 4 | 39 | 2 | December 31, 2024 | |
| Di-n-butyl phthalate | 1 | 10 | 1 | February 28, 2025 | 2,433% over the limit |
| Total Petroleum Hydrocarbons - Diesel | 1 | 10 | 1 | February 28, 2025 | 177% over the limit |
| Dibenzofuran, dry weight | 1 | 10 | 1 | February 28, 2025 | 2,370% over the limit |
| Carbazole | 1 | 10 | 1 | February 28, 2025 | 970% over the limit |
| pH | 8 | 44 | 0 | ||
| Transparency | 4 | 39 | 0 | ||
| Arsenic, total [as As] | 1 | 9 | 0 | ||
| Barium, total [as Ba] | 1 | 9 | 0 | ||
| Cadmium, total [as Cd] | 1 | 9 | 0 | ||
| Chromium, total [as Cr] | 1 | 9 | 0 | ||
| Lead, total [as Pb] | 1 | 9 | 0 | ||
| Nickel, total [as Ni] | 1 | 9 | 0 | ||
| Silver, total [as Ag] | 1 | 9 | 0 | ||
| Zinc, total [as Zn] | 1 | 9 | 0 | ||
| Selenium, total [as Se] | 1 | 9 | 0 | ||
| 4-Isopropyltoluene | 1 | 9 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 1 | 9 | 0 | ||
| Chloroform | 1 | 9 | 0 | ||
| Acenaphthene | 1 | 9 | 0 | ||
| Anthracene | 1 | 9 | 0 | ||
| Benzo[b]fluoranthene | 1 | 9 | 0 | ||
| Benzo[k]fluoranthene | 1 | 9 | 0 | ||
| Benzo[a]pyrene | 1 | 9 | 0 | ||
| Chlorobenzene | 1 | 9 | 0 | ||
| Chrysene | 1 | 9 | 0 | ||
| Fluoranthene | 1 | 9 | 0 | ||
| Fluorene | 1 | 9 | 0 | ||
| Indeno[1,2,3-cd]pyrene | 1 | 9 | 0 | ||
| Phenanthrene | 1 | 9 | 0 | ||
| Pyrene | 1 | 9 | 0 | ||
| Benzo[ghi]perylene | 1 | 9 | 0 | ||
| Benzo[a]anthracene | 1 | 9 | 0 | ||
| 1,2-Dichloropropane | 1 | 9 | 0 | ||
| Dibenz[a,h]anthracene | 1 | 9 | 0 | ||
| 1,4-Dichlorobenzene | 1 | 9 | 0 | ||
| Naphthalene | 1 | 9 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 1 | 9 | 0 | ||
| Total Petroleum Hydrocarbons - Gasoline | 1 | 9 | 0 | ||
| Mercury, total [as Hg] | 1 | 9 | 0 | ||
| 1,2,4-Trimethylbenzene | 1 | 9 | 0 | ||
| Isopropylbenzene | 1 | 9 | 0 | ||
| n-Butylbenzene | 1 | 9 | 0 | ||
| 2-Methylnaphthalene | 1 | 9 | 0 | ||
| 1-Methylnaphthalene | 1 | 9 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WAR311478.
Inspections
EPA’s inspection file holds no inspection for NPDES WAR311478.
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 WAR311478.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.