Begin Clean-up Design on
Lower Duwamish Waterway
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Item No. 6f supp
Meeting Date: June 12, 2018
4th Amendment to the
Administrative Order on Consent
•Begin the Cleanup Design for the
upper third of the LDW
• Approximately 2 miles
•Continue monitoring fish tissue and
water concentrations
•Continue to fund the seafood
consumption advisory efforts
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Port’s cost $4-5M via Environmental Remediation Liability program
Cleanup Design Includes
•Sampling to refine the extent and type of cleanup method
•Engineer design drawings and specifications
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Timeline
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2018 2017 2016 2019 2020 2021 2023 2022
ENR Carbon Pilot Study (AOC2)
Pre-Design/Baseline Study (AOC3)
Cleanup Design of the Upper Third (AOC4)
Seafood Consumption Advisory (AOC1, AOC3, and AOC4)
2024
Construction
