Duwamish Waterway Park
Current Status
Last Updated: January 2023
Documents ready for public review and comment
Ecology negotiated a legal agreement called an Agreed Order with the City of Seattle (City), the Potentially Liable Person (PLP), for the Duwamish Waterway Park cleanup site (Site) at 7900 10th Avenue South, in Seattle. The Agreed Order requires the City to address contamination at the Site. We would like your input on the following documents:
- Agreed Order: legal document that requires the City to investigate environmental conditions, complete a Remedial Investigation (RI), Feasibility Study (FS), and a draft Cleanup Action Plan (dCAP).
- Public Participation Plan: describes how Ecology will inform the community about site activities and ways to become involved.
Language Information
Español: Para ver una copia de esta hoja informativa en español (que incluye información sobre reuniones públicas el 7 y 8 de febrero con interpretación), visita www.bit.ly/Ecology-DuwamishWaterwayPark, the Seattle Public Library South Park Branch, llama al (360) 407-6097, o manda un correo electrónico a preguntas@ecy.wa.gov.
中文: 要查看 中文 情况说明书(包括有关 2 月 7 日和 8 日公开会议的信息,及口译),请访问西雅图公共图书馆南公园分馆 www.bit.ly/Ecology-DuwamishWaterwayPark, the Seattle Public Library South Park Branch 致電 425-324-5901, 或電子邮件 sunny.becker@ecy.wa.gov.
Tiếng Việt: Để xem bản sao của Tờ Thông Tin này bằng tiếng Việt (bao gồm thông tin về các cuộc họp công cộng vào ngày 7 và 8 tháng 2 có thông dịch), hãy truy cập trang mạng: www.bit.ly/Ecology-DuwamishWaterwayPark, the Seattle Public Library South Park Branch, hoặc gọi (360) 407-6097, hoặc gửi email đến Lngu461@ecy.wa.gov.
ភាសាខ្មែរ: ដើម្បីមើលឯកសារថតចម្លងតារាងព័ត៌មាននេះជាភាសា ភាសាខ្មែរ (រួមមានព័ត៌មានអំពីកិច្ចប្រជុំសាធារណ:នៅថ្ងៃទី 7 និង 8 ខែកុម្ភ: ដោយមានការបកប្រែភាសា) សូមចូលមើលវិបសាយ www.bit.ly/Ecology-DuwamishWaterwayPark, សាខា Seattle Public Library South Park Branch, សូមហៅទូរស័ព្ទលេខ (425) 324-5901, ឬអុីម៉ែល LDW@ecy.wa.gov
Af Soomaali: Si aad u eegto nuqulka xaashidan macluumaadka oo oo ku qoran af Soomaali (waxaa kamid ah macluumaadka kulmada shacabka Febraayo 7 iyo 8 oo turjuban), booqovisit www.bit.ly/Ecology-DuwamishWaterwayPark, the Seattle Public Library South Park Branch, la hadal (425) 324-5901, ama iimeel u dir LDW@ecy.wa.gov
ኣማርኛ: የዚህን የእውነታ ወረቀት ቅጂ በአማርኛ ለማየት (በፌብሩዋሪ 7 እና 8 ላይ ከትርጓሜ ጋር ስለሚደረጉ ህዝባዊ ስብሰባዎች መረጃን ጨምሮ)፣ www.bit.ly/Ecology-DuwamishWaterwayPark፣ የ Seattle Public Library South Park Branch ይጎብኙ፣ በ ( 425) 324-5901 ላይ ይደውሉ፣ ወይም LDW@ecy.wa.gov ላይ ኢሜይል ይላኩ።
Why This Site Matters
General Cleanup Process
What Happens Next?
If no significant changes are made, Ecology will finalize the documents and the City will proceed with the Remedial Investigation, Feasibility Study, and create a Draft Cleanup Action Plan for public review.
Each of those steps will require a public comment period. The graphic above shows these different stages of cleanup. Sometimes multiple stages occur in one public comment period.
Public Participation
This plan includes information for the public regarding opportunities to get involved in the Site cleanup process. The outreach activities and mechanisms presented reflect Ecology’s current plans for keeping the public informed and for receiving information and comments from the public.
Site Information
The Duwamish Waterway Park (Site) is located on the west side of the Lower Duwamish Waterway (LDW) in the South Park neighborhood of Seattle. The Site is approximately 1.7 acres and includes a play area, picnic area, and beach with river access. Seattle Parks and Recreation owns and manages the park.
Site discovery and Initial Investigation
Preliminary soil investigations occurred at the site in 2014 and 2019, documenting soil contamination of lead and arsenic. Ecology was notified of the discovery of contamination in spring of 2019, and an Initial Investigation was completed in January 2020. During the Initial Investigation, Ecology evaluated environmental conditions at the property and reviewed all available data. The goal of the Investigation was to determine if the release may pose a threat to human health or the environment, and if further cleanup actions are needed. Ecology tracks any site that is suspected or confirmed to be contaminated with hazardous materials, as required by the state’s cleanup law, the Model Toxics Control Act (MTCA), created by a 1989 voter initiative.
Ecology’s Confirmed and Suspected Contaminated Sites List
Following the Initial Investigation process the site was listed on the Confirmed and Suspected Contaminated Sites List in February 2020.
Duwamish Waterway Park - Voluntary Cleanup Program: July 2020 Through May 2022
In July 2020 City of Seattle Parks and Recreation (SRP) entered into the VCP (VCP Project Number NW3279) and requested a review and opinion on a Remedial Investigation (RI) of the Duwamish Waterway Park in July 2020. Ecology requested additional information from SRP in August 2020 to draft our opinion letter. SRP started renovation work at the site in October 2020. Ecology received a revised RI in August 2021 which included additional information on interim actions. Interim actions at the site included selective soil excavation, removal, and replacement with clean fill; construction of concrete pathways, placement of vegetation and laying of sod material, and installation of various capping technologies throughout the park.
In October 2021, Ecology’s issued an opinion letter to SRP for the independent interim cleanup actions at the site. The opinion letter documented several concerns about the potential impacts to human health and the environment. Ecology’s opinion also described several information gaps regarding the components of an RI and Feasibility Study (FS)—site characterization and the establishment of cleanup standards for the selection and implementation of a cleanup action under MTCA. Ecology’s opinion offered guidance and a path forward for SRP to address contamination at the site under MTCA, with the potential goal for a No Further Action determination.
After Ecology’s opinion letter, SPR conducted beach sampling independently and agreed to address Ecology’s information gaps identified in the Opinion letter by drafting and seeking Ecology’s opinion on an RI/Feasibility Study (FS) work plan. In April 2022 Ecology received SPR’s draft RI/FS workplan.
Based upon the findings of the draft RI/FS workplan and the growing complexity of the Site cleanup, Ecology decided to terminate the VCP project and move the Site into a formal process under an Agreed Order. Under the formal process, Ecology will have more oversight over the cleanup than the independent VCP cleanup process, including consistent and proactive community involvement and outreach.
Documents 42
Legal 4
Document Title | Document Date | Document Type |
Duwamish Waterway Park - Agreed Order Draft - January 2023 | 1/10/2023 | Agreed Order |
DWP Final PLP Status Letter | 10/19/2022 | Final Potentially Liable Person Status Letter |
Duwamish Waterway Park Addition - Early Notice Letter | 12/21/2021 | Early Notice Letter |
Duwamish Waterway Park - Early Notice Letter | 2/5/2020 | Early Notice Letter |
Public Information 9
Document Title | Document Date | Document Type |
Duwamish Waterway Park Presentation - Public Meetings Feb 7 and 8, 2023 | 2/6/2023 | Multimedia |
Fact Sheet - Duwamish Waterway Park - Vietnamese - January 2023 | 1/26/2023 | Fact Sheet\Public Notices |
Fact Sheet - Duwamish Waterway Park - Spanish - January 2023 | 1/26/2023 | Fact Sheet\Public Notices |
Fact Sheet - Duwamish Waterway Park - Khmer - January 2023 | 1/26/2023 | Fact Sheet\Public Notices |
Fact Sheet - Duwamish Waterway Park - Chinese - January 2023 | 1/26/2023 | Fact Sheet\Public Notices |
Fact Sheet - Duwamish Waterway Park - Amharic - January 2023 | 1/26/2023 | Fact Sheet\Public Notices |
Fact Sheet - Duwamish Waterway Park - Somali - January 2023 | 1/26/2023 | Fact Sheet\Public Notices |
Fact Sheet - Duwamish Waterway Park - English - January 2023 | 1/18/2023 | Fact Sheet\Public Notices |
Duwamish Waterway Park - Public Participation Plan Draft - January 2023 | 1/18/2023 | Public Participation Plan |
Technical Reports 26
Voluntary Cleanup Program 3
Document Title | Document Date | Document Type |
Duwamish Waterway Park - NW3279 VCP Termination letter | 9/21/2022 | VCP Administrative Document |
Duwamish Waterway Park—NW3279 VCP Opinion Letter | 10/27/2021 | VCP Opinion on Site Cleanup – Other |
Duwamish Waterway Park—NW3279 Electronic VCP Application Acceptance Package | 7/15/2020 | VCP Administrative Document |
Places to see print documents
-
Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
-
South Park Branch / Seattle Public Library8604 Eighth Avenue SouthSeattle, 98108This location may only have print documents available during open comment periods.
Contaminants 8
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Metals - Metals - Other | C | S | S | |||
Halogenated Organics - Polychlorinated biPhenyls (PCB) | C | S | S | |||
Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons | C | S | S | |||
Metals - Arsenic | C | S | S | |||
Metals - Lead | C | S | ||||
Metals - Mercury | C | S | S | |||
Halogenated Organics - Other Halogenated Organics | C | S | S | |||
Non-Halogenated Organics - Other Non-Halogenated Organics | C | S | S |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated
Public Comment Period January 30, 2023-March 15, 2023
Language Information Below
Información en Español incluida
有關的信息, 已被翻譯成中文
Có thông tin bằng tiếng Việt
ព័ត៌មានជាភាសាខ្មែររួមបញ្ចូល
Macluumaad af Soomaali ah ayaa la socda
በአማርኛ የተጻፈ መረጃ ተካትቷል
Online and In-Person Public Meetings
Ecology will hold an online and an in-person meeting for this site with interpretation* available.
Download presentation
Online: Tuesday, February 7, 2023
Register and Join
Presentation: Noon
Questions and answers: 1 pm, as needed
*Interpretation available through Zoom application: Spanish, Chinese, Vietnamese, Khmer, Somali, and Amharic
In-Person: Wednesday, February 8, 2023
Location: South Seattle College, 6000 16th Ave SW, Seattle, WA; Olympic Hall Room 120 (see campus map)
Presentation: 6:30 p.m.
Questions and answers: 7:30 p.m., as needed
*Interpretation available with a smartphone and headphones: Spanish, Chinese, Vietnamese, Khmer, Somali, and Amharic