South Park Marina
8604 Dallas Ave S, Seattle, WA 98108

South Park Marina
Please click on the photo for a larger view


Negotiations Underway for Agreed Order – April, 2016

Ecology has begun negotiating an Agreed Order (legal agreement) with Potentially Liable Parties to investigate and develop a cleanup action plan for the South Park Marina Site.   Negotiations began on April 12, 2016.

Ecology has identified the South Park Marina, LP as a Potentially Liable Party (PLP) responsible for the investigation and cleanup. Other PLPs may be named and could include: 
Port of Seattle
City of Seattle
Merlino Construction                    
A&B Barrel                                       


The South Park Marina is located at 8604 (and other addresses) Dallas Avenue South in South Park area of Seattle.  It is located on the west bank of the Lower Duwamish, immediately upstream from the South Park Bridge. The actual property is approximately two acres but size of the cleanup site is not yet known.
In the 1950s through the1960’s A & B Barrel used the site to clean and recondition barrels. The waste materials such as contaminated water was discharged to a small pond on the property, and then into the Duwamish River.

From the 1960s to the present day, the site was or is used to park cars, store and repair boats and conduct other activities associated with an active marina. All of these on site actions may have contributed to the contamination.  Activities conducted on the adjoining Terminal 117, Malarkey Asphalt site are also potential sources of contamination.
Previous and ongoing investigation and monitoring activities include: 
2005            Seattle Public Utilities (SPU) conducted soil sampling, Dallas Av. S 

2007            Ecology Toxics Control Program conducted soil and ground water sampling

2008            Environmental Protection Agency (EPA) conducted sediment sampling in
                      Lower Duwamish Waterway

2014-15       Ecology conducted sampling drainage system solids and water associated 
                      with NPDES permit

2015-16       South Park Marina is currently doing investigation

Ongoing       Ecology is conducting sampling associated with NPDES permit


(Soil, Sediment, Ground Water, Drainage System Solids, and Stormwater)
For more information about these chemicals see the Agency for Toxics Substances and Disease Control  
Metals   - Arsenic, Cadmium, Copper, Chromium, Mercury, Lead, Zinc
Pesticides – aldrin, dieldrin
Chlorinated VOCs – 1, 2 and 1, 4 dichlorobenzene, PCE, TCE, vinyl chloride
Fuel VOCs – benzene, ethyl benzene, toluene, xylene


Map showing site location as King County, WA SITE INFORMATION


View Electronic Documents

Site Summary Report

Facility Site ID: # 44653368

Cleanup Site ID: 2858

Seattle, King County

Status: Awaiting Cleanup   Get definitions of Status terminology

Mark Adams
Site Manager
(426) 649-7107

Amy White
Public Involvement Coordinator
(425) 649-7052

Document Repositories:

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