Facility Site ID: 44653368 Cleanup Site ID: 2858

Site Status - July 2021

Environmental Sampling Figure - March 2021
Environmental Sampling Figure - March 2021

Environmental Sampling in March

Consultants will be working with South Park Marina staff in March to move boats and equipment so that monitoring wells can be installed and samples can be taken from soil, stormwater, and groundwater throughout the property. The most noticeable event will be the drilling of the wells.

This sampling is happening as a part of the investigation of contamination at South Park Marina. Ecology, the Port of Seattle, City of Seattle, and South Park Marina have signed a legal agreement, called an agreed order, that requires the Port, City, and Marina to investigate the conditions and delineate the extent of contamination at the property.

The schedule looks like this:

*  March 1 - 12: Well drilling and soil sampling
*  All of March: Stormwater sampling
*  March 22 - April 9: Groundwater sampling



The estimate overall project timeline looks like this:
  • Agreed Order In Effect: April 2019
  • Remedial Investigation Work Plan completed: February 2021
  • Remedial Investigation underway: March 2021
 

Site Background


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.
 

  

Contaminants Of Concern

Metals   - Arsenic, Cadmium, Copper, Chromium, Mercury, Lead, Zinc
PCBs      
Pesticides – aldrin, dieldrin
PAHs
Phthalates
Pentachlorophenol
Chlorinated VOCs – 1, 2 and 1, 4 dichlorobenzene, PCE, TCE, vinyl chloride
Fuel VOCs – benzene, ethyl benzene, toluene, xylene
Dioxins/furans

(Soil, Sediment, Ground Water, Drainage System Solids, and Stormwater)
For more information about these chemicals see the Agency for Toxics Substances and Disease Control  
Legal 2
Public Information 4
Document Title Document Date Document Type
SouthParkMarina-PublicParticipationPlan-AO-December2018 12/7/2018 Public Participation Plan
SouthParkMarina-AgreedOrder-FactSheet-Vietnamese-December2018 12/7/2018 Fact Sheet\Public Notices
SouthParkMarina-AgreedOrder-Factsheet-Spanish-December2018 12/7/2018 Fact Sheet\Public Notices
SouthParkMarina-AgreedOrder-FactSheet-December2018 12/7/2018 Fact Sheet\Public Notices
Technical Reports 14
Document Title Document Date Document Type
Addendum to Source Control Review Memorandum, South Park Marina 2/21/2024 Site Specific Technical Document - other
Source Control Review Memorandum South Park Marina 9/6/2022 Site Specific Technical Document - other
Remedial Investigation Work Plan Addendum, South Park Marina 8/23/2022 Remedial Investigation Work Plan
South Park Marina - Ecology Project Coord Change Letter 3/23/2021 Site Specific Administrative Document - other (Administrative correspondence)
Work Plan for Remedial Investigation - Part 2, South Park Marina, Seattle, Washington 2/2/2021 Remedial Investigation Work Plan
Work Plan for Remedial Investigation - Part 1, South Park Marina, Seattle, Washington 2/2/2021 Remedial Investigation Work Plan
South Park Marina - Rank Notification Letter 2/4/2015 Site Specific Administrative Document - other (Administrative correspondence)
South Park Marina - Site Hazard Assessment 1/28/2015 Site Hazard Assessment Report
South Park Marina - SHA Notification Letter 4/4/2014 Site Specific Administrative Document - other (Administrative correspondence)
Terminal 117 - Upland and Sediment NTCRA, Additional Bank Removal at South Park Marina 3/6/2014 Site Specific Technical Document - other
Lower Duwamish Waterway, South Park Marina, Sediment Recontamination Assessment 6/22/2009 Site Specific Technical Document - other
South Park Marina, Seattle, WA, Additional Site Characterization Activities Data Report 6/1/2008 Site Specific Technical Document - other
Lower Duwamish Waterway, South Park Marina, Summary of Existing Information and Identification of Data Gaps 6/1/2007 Site Specific Technical Document - other
Final Technical Memorandum. Lower Duwamish Waterway, South Park Marina, Sediment Recontamination Assessment 6/22/2004 Site Specific Technical Document - other
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Places to see print documents

  • Northwest Regional Office
    15700 Dayton Ave N
    Shoreline, 98133
    Please schedule an appointment to view print documents at this location.

Contaminants 10

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Metals - Metals - Other C C
Halogenated Organics - Polychlorinated biPhenyls (PCB) C C
Pesticides - Halogenated Pesticides C C
Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons C C
Halogenated Organics - Halogenated Solvents C C
Metals - Arsenic C C
Metals - Lead C C
Metals - Mercury C C
Non-Halogenated Organics - Petroleum-Diesel C C
Non-Halogenated Organics - Petroleum-Gasoline C C
S
Suspected
C
Confirmed Above Cleanup Levels
B
Below Cleanup Levels
RA
Remediated-Above
RB
Remediated-Below
R
Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.