UNOCAL Friday Harbor Bulk Plant
1st & Court St, Friday Harbor, WA 98250


Ecology invites you to review and comment on the periodic review for the Unocal Friday Harbor Bulk Plant site located at 1st and Court Street, Friday Harbor, Washington.


A periodic review is conducted every five years following a cleanup action when institutional controls are used as part of the remedy, as required by the Model Toxics Control Act (MTCA). The purpose of the periodic review is to evaluate current site conditions and to ensure continued protection of human health and the environment.

Ecology will review comments received during the comment period and make recommendations for suggested changes. The periodic review will become final if no significant changes are made. An additional public comment period will be held if significant changes are made.

Please submit comments through Ecology’s Online Comment Form or mail your written comments to Tamara Welty at 3190 160th Ave S.E., Bellevue, WA 98008. To request ADA accommodation, call Ecology at 360-407-7285, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.

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The Site is located on Front Street in the waterfront area of the Town of Friday Harbor on San Juan Island. The Site includes a vacant property owned by the Port of Friday Harbor (tax parcel number 351350502000) and the north-adjacent Front Street right-of-way owned by the Town of Friday Harbor.


The Site is defined by petroleum releases to soil and groundwater associated with historical operations of a Unocal bulk plant which stored and distributed gasoline and diesel fuel between 1924 and 1983. The bulk plant facility included above ground storage tanks (ASTs), a garage, a concrete containment wall down slope of the ASTs, and a truck loading rack outside the containment wall (eastern side). Underground and aboveground steel pipelines formerly connected the storage tanks with a fuel dock. The pipelines have also been removed.


Approximately 3,710 tons of petroleum-contaminated soil and 6,000 gallons of petroleum-impacted groundwater with free product were removed from the Site in 2002.  Contamination remained in a localized area along the west wall of the excavation. The area was near a grove of trees and could not be safely excavated further without removing the trees or excavating near an active electrical line.


The remaining contamination is in the right-of-way in the vicinity of a concrete stairway that leads up the slope to 1st Street. Institutional controls through a Restrictive Covenant were implemented at the Site as part of the cleanup action.  


Ecology issued a no further action (NFA) determination for the Site on October 23, 2003 after a Restrictive Covenant was recorded for the Site to restrict activities that might result in exposures to the contaminants. This was issued through the Voluntary Cleanup Program (VCP).


The NFA determination also required a groundwater compliance monitoring program to assure the Site does not pose a threat to human health or the environment. Quarterly groundwater monitoring began in November 2004. Results indicated that the Site had four consecutive quarters below MTCA Method A cleanup levels. In 2006, Ecology issued a second NFA determination that no longer required groundwater monitoring.    


Map showing site location as San Juan County, WA SITE INFORMATION


View Electronic Documents

Site Summary Report

Facility Site ID: # 2653

Cleanup Site ID: 797

Friday Harbor, San Juan County

Status: No Further Action   Get definitions of Status terminology

Comment Period:
JANUARY 03, 2019 - FEBRUARY 04, 2019

Tamara Welty
Periodic Review Coordinator
(425) 649-7023

Document Repositories:

Northwest Regional Office
3190 160th Ave SE
Bellevue, 98008-5452