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HARBOR 1 MARINA CONDUIT INSTALLATION MITIGATION, PORTLAND, OREGON, 408 REVIEW

Portland District
Published June 10, 2024
Expiration date: 6/25/2024

SPECIAL PUBLIC NOTICE
    HARBOR 1 MARINA CONDUIT INSTALLATION MITIGATION, PORTLAND, OREGON, 408 REVIEW

Issue Date: June 10, 2024
Expiration Date: June 25, 2024
Corps Reference: PM-F-Section 408 0097-FY22 Harbor 1 Marina Conduit Installation Mitigation Project, Portland, Multnomah County, Oregon

15-Day Notice

This Public Notice announces the Section 408 review of the Harbor 1 Marina Conduit Installation Mitigation. 

Portland District is reviewing the Harbor 1 Marina Conduit Installation Mitigation Project along NE Marine Drive in Portland, Oregon. 

Alteration of a federally authorized project: Harbor 1 Marina installed two new 4-inch diameter electrical conduits using horizontal directional drilling to bore below NE Marine Drive through the Multnomah County Drainage District’s Multnomah-Columbia River Levee West levee prior to obtaining Section 408 permission for the encroachment on the USACE civil works project. To mitigate potential effects to the levee caused by the HDD boring, Harbor 1 Marina is proposing to construct a zoned filter near the landward exit of the electrical conduits and a low permeability CLSM backfill plug around the conduits on the riverward side. The CLSM backfill plug will limit the potential for seepage paths along the conduits and the filter system will limit the potential for progressive backward erosion. 

Consideration of Comments: The Corps is soliciting comments specific to this project from the public, federal, state, and local agencies and officials, and other interested parties. Comments will be considered in determining whether it would be in the public interest to proceed with this action.

All comments received will become part of the official record and are subject to public release under the Freedom of Information Act including any personally identifiable information such as names, phone numbers, and addresses.
 
Comments: Interested parties may submit, in writing, any comments directed specifically to this proposal and not to other regulatory processes administered by the Corps or other government agencies pertaining to the Harbor 1 Marina Conduit Installation Mitigation

Comments should refer to PM-F- 0097-FY22 - Harbor 1 Marina Conduit Installation Mitigation and the date of this Public Notice (June 10, 2024) and be electronically submitted by the comment due date (June 25, 2024). 

Comments must be sent electronically to section408nwp@usace.army.mil . Message subject MUST SAY: Public Notice PM-F- 0097-FY22 Harbor 1 Marina Conduit Installation Mitigation.

Alternatively, comments can be sent and be postmarked by the comment due date (June 25, 2024):

     U.S. Army Corps of Engineers, Portland District 
     ATTN: Ms. Sally Bird-Gauvin
     P.O. Box 2946
     Portland, Oregon 97208-2946. 

For additional information, please send email to: section408nwp@usace.army.mil, attention to: Sally Bird-Gauvin. This public notice is issued by the U.S. Army Corps of Engineers, Portland District.