Chapter
Sep 12, 2019
15th Triennial International Conference
Sediment Cleanup Challenges in the East Waterway
Authors: Dan Berlin [email protected], Tom Wang [email protected], Kathy Ketteridge, Ph.D. [email protected], and Greg Brunkhorst [email protected]Author Affiliations
Publication: Ports 2019: Port Engineering
ABSTRACT
The East Waterway, an operable unit of the Harbor Island Superfund Site in Seattle, Washington, is one of the most active commercial waterways in the Pacific Northwest. After more than 20 years of study, the U.S. Environmental Protection Agency is proposing a cleanup remedy for this 1.5-mile-long (2.4-kilometer-long), 157-acre (63.5-hectare) waterway. The remediation of large, complex, urban contaminated sediment sites presents a unique set of technical and administrative challenges. This paper presents the key challenges for implementing cleanup, including: 1) controlling recontamination during dredging in an active waterway that may take up to 10 years to complete; 2) cleaning up 12 acres (4.9 hectares) of sediment in limited-access underpier areas; and 3) understanding the unique physical processes that affect long-term site concentrations following cleanup. Because these three elements will substantially affect project performance, they must be considered during remedial design and construction efforts.
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Information
Published In
Ports 2019: Port Engineering
Pages: 505 - 514
Editors: Pooja Jain, Moffatt & Nichol and William S. Stahlman III, America's Central Port
ISBN (Online): 978-0-7844-8261-2
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Sep 12, 2019
Published in print: Sep 12, 2019
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Authors
Affiliations
Principal Scientist, Anchor QEA, LLC, 1203 3rd Ave., Suite 2600, Seattle, WA 98101. E-mail: [email protected]
P.E.
Principal Engineer, Anchor QEA, LLC, 1203 3rd Ave., Suite 2600, Seattle, WA 98101. E-mail: [email protected]
P.E.
Senior Managing Engineer, Anchor QEA, LLC, 1605 Cornwall Ave., Bellingham, WA 98225. E-mail: [email protected]
Senior Staff, Anchor QEA, LLC, 1119 Pacific Ave., Suite 1600, Tacoma, WA 98101. E-mail: [email protected]
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