Item No.: 8f_supp
Date: October 14, 2025

T18 Maintenance Dredging Additional ERL
Funding

Arthur Kim - Capital Project Manager, Waterfront Project Management
Stephanie Jones Stebbins - Managing Director, Maritime

Action Request
Request Commission authorization for the Executive Director to
increase the total costs not to exceed from $1,000,000 to
$2,000,000 for additional environmental remediation liability
(ERL) funding for upland disposal of additional contaminated
sediment from the T18 Maintenance Dredging Project, Master
Identification No. N10746.

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T18 Bathymetric Survey

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Background
• Sediment testing in 2025 showed all dredged material for the
project as unsuitable for open water disposal and must be
disposed at an approved upland facility.
• Initial construction estimates anticipated 3,600 CY of material.
• Final design revised the volume to 6,000 CY.
• Additional ERL funding is required for the additional 2,400 CY
of material.

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Project Objectives
• Dredge an additional 2,600 CY of material unsuitable material
for open water disposal.
• Dispose of all material at an approved upland facility.
• Place 9" of clean sand cover over the dredged areas as
required by regulatory agencies.

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Project Cost Details - NWA

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Project Cost Details - POS ERL

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Project Schedule
Item

Anticipated Date

Commission - Construction Authorization

Q3 2025

Construction start

Q1 2026

Substantial Completion

Q1 2026

Final Completion

Q3 2026

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Cone of Certainty

We are here

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Questions?

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