How to comment on the cleanup plan: • Attend the public hearing:* June 17, 2010 South Park Community Center 8319 8th Ave S - Open House: 5:30 pm - Presentations: 6:00 pm - Public Hearing: 7:00 pm * Translators and childcare will be provided at the public hearing. • Read the T-117 cleanup plan at: www.T 117.com or South Park Library Project Schedule United States Environmental Protection m % Agency 2009 - 2010 Cleanup action planning and selection of cleanup alternative 2010 Draft cleanup plan available; public meeting and review period 2011 Design and contracting 2012 - 2013 Cleanup construction 2013 - 2014 Begin site redevelopment • Send your comments to EPA by July 7, 2010: E-mail: r10terminal117@epa.gov Mail: Terminal 117 Comments, U.S. EPA, 1200 6th Ave, Suite 900, ECL-111, Seattle WA 98101 Questions? Piper Peterson Lee, Environmental Protection Agency Project Manager, 206-553-4951, Peterson-Lee.piper@epa.gov Suzanne Skadowski, Environmental Protection Agency, Community Involvement, 206-553-6689, Skadowski.suzanne@epa.gov More Information For general T11 7 cleanup information visit www.T! 1 7.com Or contact a member of the project team: • Roy Kuroiwa, Port of Seattle Project Manager, 206-787-3814, Kuroiwa.r@portseattle.org • Tom Meyer, Seattle City Light Project Manager, 206-386-91 68, Tom.meyer@seattle.gov • Piper Peterson Lee, Environmental Protection Agency Project Manager, 206-553-4951, Peterson-Lee.piper@epa.gov • Thea Levkovitz, Duwamish River Cleanup Coalition Coordinator, 206-954-0218, thea@duwamishcleanup.org • Penny Mabie, Envirolssues Public Involvement Consultant, 206-269-5041, pmabie@enviroissues.com Terminal 117 ^Seattle & Qty of Seattle dEF^sS™"*'Protae6on Jfc United States Environmental Protection B * Agency Terminal 117 Superfund Site Cleanup Plan Proposed June 2010 What is Terminal 11 7? Terminal 117 (T-117) is a contaminated site located on the west bank of the Duwamish River in Seattle's South Park neighborhood The cleanup area is located between 14th Avenue South, Dallas Avenue South and South Donovan Street. Past asphalt manufacturing activities by Duwamish Manufacturing and then by Malarkey Asphalt left behind oil and PCB (polychlorinated biphenyls) contamination in the river sediments (mud), on the bank, and on some of the land next to the river (uplands, streets, and yards). The contamination needs to be cleaned up because it is a threat to human health and the health of the river environment. What is the cleanup plan? The proposed cleanup plan is called an Engineering Evaluation and Cost Analysis (EE/CA). The cleanup plan was written to identify and select a cleanup strategy for T-117. Historical information was used along with soil, groundwater and sediment samples to identify the contaminants. This information was used to develop the cleanup plan. After the public review, EPA will decide on a final cleanup plan later in an Action Memorandum, which will be based on the findings in the EE/CA. EPA is directing and overseeing this cleanup. The Port of Seattle (Port) and the Seattle City Light (City) must complete the cleanup under an EPA Superfund order. Sediment PCB cleanup Residential yards cleanup T-117 upland removal area T-117 cleanup boundary T-117 cleanup boundary T-117 upland removal area Residential yards cleanup Street cleanup Sediment PCB cleanup Navigation channel tSlfeidaergaieE.tl S Donovan St Meters Final removal areas, including residential yards and street removal areas, will be determined in the EPA Action Memorandum ------- What are the cleanup goals and objectives? The cleanup will remove enough soil and sediment from T-117 to reduce contaminants to levels that will protect the river environment and reduce health risks to people. The site will be clean enough for many possible future uses, including business and residential development, river habitat, and public access. The soil and sediment contamination will be cleaned up to levels that will: Reduce health risks to people who eat Lower Duwamish seafood by reducing contaminants in sediment and surface water to protective levels. Reduce health risks to people who have direct contact with sediments by reducing contaminants in sediment to protective levels. Reduce risks to the insects, worms, and shellfish that live in the river by reducing sediment contamination to Washington State sediment standards. Reduce risks to crabs, fish, birds, and mammals that live in the river from exposure to contaminants by reducing contaminants in sediment and surface water to protective levels. What cleanup alternatives does the EE/CA evaluate? EPA evaluated different cleanup methods to remove the PCB contamination, including excavating soil, dredging the sediment, covering the contaminated sediment with clean material (capping) to keep the contamination from spreading, or treating the soil and sediment. The cleanup methods proposed in this plan were selected because they are proven to work and can be readily used. EPA is proposing two cleanup alternatives that can meet the cleanup goals. Note: Some of the streets and yards have soils that are also contaminated with dioxin/furans. The streets and yards with PCBs will be cleaned up. Removing soils with RGBs will also remove the dioxins/furans from these yards. However, the yards with dioxin/furans that do not have PCBs wili not be cleaned up as part of the T-117 removal action. 2 - Terminal 117 What is the recommended cleanup alternative for T-117? EPA recommends cleanup Alternative 2 for T-117. Alternative 2 will be more effective and permanent than Alternative 1. The advantages of Alternative 2 are summarized in the table below: Advantages / Disadvantages of Alternatives 1 and 2 Cleanup Element Alternative 1 Alternative 2 Water quality Less short-term water pollution because there is less dredging More short-term water pollution because there is more dredging. This can be mitigated through project design and controls Long term effectiveness Less effective long-term because contaminated sediment is left in place and must be monitored to make sure the cap is protective More effective long-term and more permanent because most of the contamination is removed Options for site use after cleanup Fewer options for site use after cleanup because site use restrictions will be required More options for site use after cleanup (i.e. habitat restoration, public access, etc.) Cost Costs less, but requires monitoring long-term Costs more but no long-term monitoring and performance reviews will be required after the cleanup is finished Comparison of Alternatives 1 and 2 Alternative 1 Alternative 2 Reduces health risks and protects the environment / / Achieves cleanup goals and meets cleanup requirements / / Volume of contaminated material removed and taken away Soil (cubic yards) 47,000 47,000 Sediment (cubic yards) 6,500 14,000 Containment method (volume of material brought in) Sediment capping Backfilling Material required (cubic yards) 8,000 10,000 Cost $31,700,000 $33,200,000 Terminal 117-3 ------- |