Clean Water Act discharge permit · NPDES WAR126972

NORTHGATE LINK EXTENSION TBM TUNNEL CONTRACT, Seattle, WA: NPDES WAR126972 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
3Pollutants under a numeric limit
0Pollutants with an effluent exceedance

NORTHGATE LINK EXTENSION TBM TUNNEL CONTRACT, held by Northgate Link Extension TBM Tunnel Contract, holds NPDES permit WAR126972. EPA’s file records it issued December 1, 2010 and expiring December 31, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	NORTHGATE LINK EXTENSION TBM TUNNEL CONTRACT
Permittee as filed	Northgate Link Extension TBM Tunnel Contract
NPDES ID	WAR126972
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	December 1, 2010
Expiration date	December 31, 2015
Issuing agency	State
Address	Seattle, WA 98104
Receiving water impaired	303(D) Listed
Subwatershed	Lake Washington-Sammamish River (HUC 171100120400)
SIC	1794 – Excavation Work

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

7Pollutants on file
3Under a numeric limit
7With 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
pH	2	112
Total Petroleum Hydrocarbons - Diesel	0	61
Total Petroleum Hydrocarbons - Gasoline	0	61
Trichloroethene	0	61
Hydrocarbons, total petroleum	0	61
Turbidity	1	56
Transparency	1	56

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WAR126972.

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 WAR126972.

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 WAR126972 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit WAR126972 for the Northgate Link Extension TBM Tunnel Contract in Seattle, WA, held by Northgate Link Extension TBM Tunnel Contract, with a permit status of administratively continued and a Minor Discharger class 3. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it gives the issue date of December 1, 2010 and expiration date of December 31, 2015 as EPA's file stood on October 14, 2026.