Clean Water Act discharge permit · NPDES WAR313804

SR 104 LYON CREEK, Lake Forest Park, WA: NPDES WAR313804 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
14Pollutants under a numeric limit
0Pollutants with an effluent exceedance

SR 104 LYON CREEK, held by WSDOT, holds NPDES permit WAR313804. 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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	SR 104 LYON CREEK
Permittee as filed	WSDOT
NPDES ID	WAR313804
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	Lake Forest Park, WA 98155
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

14Pollutants on file
14Under a numeric limit
14With 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
Total Petroleum Hydrocarbons - Diesel	1	10
Total Petroleum Hydrocarbons - Gasoline	1	10
pH	2	6
Turbidity	1	3
Arsenic, total [as As]	1	2
Chromium, total [as Cr]	1	2
Lead, total [as Pb]	1	2
4-Nitrophenol	1	2
Naphthalene	1	2
1,2,4-Trimethylbenzene	1	2
2-Methylnaphthalene	1	2
1-Methylnaphthalene	1	2
Acetone	1	2
Methyl ethyl ketone	1	2

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WAR313804.

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 WAR313804.

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

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, WAR313804.

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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 WAR313804 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit WAR313804 for SR 104 LYON CREEK in Lake Forest Park, WA, held by WSDOT, with status shown as administratively continued and a minor discharger class. The EPA permit file records issuance on November 18, 2020 and expiration on December 31, 2025, and lists 0 pollutants under a numeric limit and 14 pollutants in the effluent limits and exceedances section, with the Lake Washington-Sammamish River subwatershed (HUC 171100120400) shown as the watershed.