Permit Application Public Notices

The United States Congress authorizes the U.S. Army Corps of Engineers to regulate activities that may impact wetlands and waters of the United States. This authority is granted and defined under Section 10 of the Rivers and Harbors Act of 1899 and Section 404 of the Federal Water Pollution Control Act Amendments of 1972, also known as the Clean Water Act.

Public involvement is a key element of the Corps’ permit review process. During an application review, the Corps considers the views of other federal, state and local agencies, Native American tribes, interest groups, and the general public. The results of this careful public interest review are fair and equitable decisions that allow reasonable use of private property, infrastructure development, and growth of the economy, while offsetting the authorized impacts to the waters of the United States.

Visit our News & Updates webpage for the latest Regulatory Program information.


Portland District
Published Oct. 1, 2021
Expiration date: 10/31/2021

Application for Permit

Issue Date: October 1, 2021
Expiration Date: October 31, 2021
US Army Corps of Engineers No: NWP-2021-412 
                        Oregon Department of State Lands No:

30-Day Notice  -

Interested parties are hereby notified the U.S. Army Corps of Engineers, Portland District (Corps) has received an application for a Department of the Army permit for certain work in waters of the United States, as described below and shown on the attached plans. The Corps is soliciting comments on the proposed work.

Applicant:    Columbia Crossings, LLC
                       Attention: Loren Davis
                       515 NE Tomahawk Island Drive
                       Portland, Oregon 97217
                       Telephone: (503) 283-4942

Applicant’s Agent:     Flowing Solutions 
                                        Attention: Andrew Jansky 
                                        3305 SW 87th Avenue
                                        Portland, Oregon 97225
                                        Telephone: (503) 297-6311

Location: The project site is located at 515 NE Tomahawk Island Drive, in Portland, Multnomah County, Oregon. The site is in Section 2, Township 1 North, Range 1 East.  Latitude and Longitude:  45.6063° North, 122.6524° West

Waterway: The project is located in the Columbia River at river mile 107.75. The location of the ordinary high water (OHW) mark shown on the project drawings has not yet been verified by the Corps. If the Corps determines the boundaries of the waters are substantially inaccurate a new public notice may be published.

Project Purpose: The applicant’s stated purpose is to reduce erosion along the shore and shoaling within the existing basin.

Project Description: The project is the Tomahawk Bay East Entrance Beach Nourishment. The project would dredge 85,000 cubic yards (cy) of sand over 211 acres from the shoal formed within the basin and the access channel downstream managed by Columbia Crossing. The project would place 85,000 cy of sand over 475 square feet of Tomahawk Island shoreline in the Columbia River over the duration of the project. 

The initial placement would include 67,500 cy of sand, a second event would place 17,500 cy of sand to fill in areas of erosion. The placement area would extend about 150 feet from OHW into the main channel of the Columbia. The project would place sand in depths ranging just below OHW to -20 Columbia River Datum (CRD) along the shoreline. 

Sand would be dredged using a hydraulic dredge and would be placed at the shoreline disposal site via hydraulic suction line. The discharge line will be placed in the lowest riverbed area, allowing the material to accumulate. The suction line outlet will be moved across the area to raise the grade. When the material reaches the water surface, the discharged material will be pulled up the shore with an excavator and used to rebuild the exposed beach. A small dozer or excavator will be used to form a containment area to contain sand/water mix as it settles. If the machine cannot access the lower slope due to unsuitable ground, the outlet pipe will be dragged into position by boats. 

Work includes installation of 100 cy of large woody material (LWM) to reduce and diffuse flow and provide in-water habitat and structure. Four existing steel piles will be relocated and realigned with four existing piles and will act as anchors for the proposed LWM. 

The existing rip-rap slope would not be changed; however, the sand would be placed over void spaces and cover the slope.  Along the top of the berm, additional planting will consist of various willow species. Given the low elevation, establishment will take several years of replanting efforts along with access for equipment. A small channel will remain open for fish passage and paddle craft to exit the basin. This channel will also allow for water circulation with tidal variation.  

Staging and access will occur over the upstream parcel owned by Portland Yacht Club. The work includes the temporary placement of 1,000 cy of oak mats placed on the sand to allow the machine access.

In-water work would occur during the in-water work period of November 1 to February 28.

Dredged Material Testing: Project sediments were evaluated in accordance with the Sediment Evaluation Framework for the Pacific Northwest (SEF). The interagency Portland Sediment Evaluation Team (PSET) implements the SEF for the Corps Portland District. For this project, the PSET has determined that sediments in the project area are suitable for unconfined, aquatic disposal and exposure. The proposed project includes future maintenance dredging. Prior to each maintenance dredging cycle, the applicant would be required to coordinate with the Corps and the PSET to determine if additional sediment testing is required. 

Mitigation: The applicant proposes to avoid and minimize impacts from the project by replanting the area after construction and the installation of large wood material. The applicant intends to use track machinery above OHW and use temporary oak mats placed on the sand to allow machine access. Hydraulic placement will be used to place sand and minimize the use of machinery in the water.  The applicant has provided a proposed compensatory wetland mitigation plan to offset losses of waters of the U.S. that may result from the proposed project. The applicant proposes that the project is self-mitigating, placement of dredge material to construct the shoreline would reduce the impacts of future dredging in the basin. The Corps will determine the type and amount of compensatory mitigation necessary to offset environmental losses from the proposed project.

Drawings:  Twelve (12) drawings are attached and labeled Corps No. NWP-2021-412. Copies of this public notice, which have been mailed or otherwise physically distributed, feature project drawings in black and white. The electronic version features those drawings in color, which we think more accurately illustrates the proposed project. To access the electronic version of this public notice, go to the Portland District Regulatory website at and select Regulatory Public Notices from the list of Regulatory pages.

Additional Information: The work would occur during the in-water work window for the Columbia River, November 1 to February 28. The material for placement will be sourced from within the shoal formed within the basin and the access channel downstream managed by Columbia Crossing. Previous basin dredging was evaluated under permit NWP-2010-141.

Authority: The proposed project will be evaluated under the following:

    Section 10, Rivers and Harbors Act 1899 (33 U.S.C. 403), for work in or affecting navigable waters of the United States.

    Section 14, Rivers and Harbors Act 1899 (33 U.S.C. 408) (referred to as “Section 408”), for work to alter a Corps civil works project. An alteration is defined as any action that builds upon, alters, improves, moves, occupies or otherwise affects the usefulness, or the structural or ecological integrity of a Corps federally authorized project. The proposed project may alter the Columbia and Willamette River Federal Navigation Project. 

    Section 404, Clean Water Act (33 U.S.C. 1344), for discharge of dredged or fill material into waters of the United States.

Clean Water Act Section 404(b)(1) Guidelines: The described discharge will be evaluated for compliance with guidelines promulgated by the U.S. Environmental Protection Agency under authority of Section 404(b)(1) of the Clean Water Act. The 404(b)(1) Guidelines are the substantive criteria used in evaluating discharges of dredged or fill material into waters of the United States. The source of the fill material would be the Columbia Crossing marina basin. 

Water Quality Certification: Section 401 of the Clean Water Act (33 U.S.C. 1341) requires applicants to obtain a water quality certification for proposed discharges into waters of the United States. A permit for the described work will not be issued until certification has been issued or is waived from the certifying state. Attached is the state's notice for a water quality certification.

Endangered Species: Section 7 of the Endangered Species Act (ESA) (16 U.S.C. 1536) requires federal agencies to consult with the National Marine Fisheries Service (NMFS) and/or U.S. Fish and Wildlife Service (USFWS) on all actions that may affect a species listed (or proposed for listing) under the ESA as threatened or endangered or that may adversely modify designated critical habitat. The Corps’ preliminary review indicates the described activity may affect an endangered or threatened species or designated critical habitat. The Corps will initiate consultation under Section 7 of the ESA. The Corps will complete the required consultation prior to finalizing a permit decision.

Essential Fish Habitat: Section 305(b)(2) of the Magnuson-Stevens Fishery Conservation and Management Act (MSA) as amended (16 U.S.C. 1855), requires Federal agencies to consult with the NMFS on all actions, or proposed actions, permitted, funded, or undertaken by the agency, that may adversely affect Essential Fish Habitat (EFH). The Corps’ preliminary review indicates the described activity would adversely affect EFH at the project location or in the vicinity. The Corps will initiate consultation under Section 305(b)(2) of the MSA. The Corps will complete the required consultation prior to finalizing a permit decision.

Historic Properties/Cultural Resources: Section 106 of the National Historic Preservation Act of 1966, as amended (54 U.S.C. 306108), requires Federal agencies to consult with the appropriate State and/or Tribal Historic Preservation Officer to take into account the effects of actions they undertake or permit on historic properties listed in or eligible for listing in the National Register of Historic Places. The Corps’ preliminary review indicates to the best of our knowledge, the described activity is not located on property registered or eligible for registration in the latest published version of the National Register of Historic Places. At this time the Corps is unaware of any cultural resource surveys of the project area. 

This notice has been provided to the Oregon State Historic Preservation Office, interested Native American Tribes, and other interested parties. If you have information pertaining to cultural resources within the permit area, please provide this information to the Corps’ project manager identified at the end of this notice to assist in a complete evaluation of potential effects.

State and Local Authorizations: The applicant has applied for the following additional governmental authorizations for the project: Oregon Department of State Lands and Oregon Department of Environmental Quality.

Public Hearing: Any person may request in writing within the comment period specified in this notice that a public hearing be held to consider this application. Requests for public hearings shall state with particularity the reasons for holding a public hearing.

Evaluation: The decision whether to issue a permit will be based on an evaluation of the probable impact, including cumulative impacts, of the described activity on the public interest. That decision will reflect the national concern for both protection and utilization of important resources. The benefit, which reasonably may be expected to accrue from the described activity, must be balanced against its reasonably foreseeable detriments. All factors, which may be relevant to the proposal will be considered including the cumulative effects thereof; among those are conservation, economics, aesthetics, general environmental concerns, wetlands, historic properties, fish and wildlife values, flood hazards, floodplain values, land use, navigation, shoreline erosion and accretion, recreation, water supply and conservation, water quality, energy needs, safety, food and fiber production, mineral needs, consideration of property ownership and, in general, the needs and welfare of the people.

The Corps is soliciting comments from the public; Federal, state, and local agencies and officials; Native American Tribes; and other interested parties in order to consider and evaluate the impacts of the proposed activity. Any comments received will be considered by the Corps to determine whether to allow an alteration of a federally authorized project or to issue, modify, condition or deny a permit for this proposal. To make this decision, comments are used to assess impacts on endangered species, historic properties, water quality, general environmental effects, and the other public interest factors listed above. Comments are used in the preparation of an Environmental Assessment and/or an Environmental Impact Statement pursuant to the National Environmental Policy Act. Comments are also used to determine the need for a public hearing and to determine the overall public interest of the proposed activity.

Submitting Comments: Interested parties are invited to provide comments on the proposed project.  Comments may be submitted by conventional mail or email. All comments received will be considered in determining whether authorizing the work would be contrary to the public interest. 

Either conventional mail or e-mail comments must include the Corps reference number as shown on page 1 and include the commenter’s name and address. In order to be accepted, e-mail comments must originate from the author’s e-mail account and must include on the subject line of the e-mail message the Corps reference number. All comments received will become part of the administrative 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.

Additional information about the proposed project may be obtained from the Corps Project Manager listed below. All comments, whether by conventional mail or email, must be received no later than the expiration date of this public notice to ensure consideration. Comments should be submitted to the following mailing address or email address:

        U.S. Army Corps of Engineers
        Regulatory Branch
        Melody White
        P.O. Box 2946
        Portland, Oregon  97208-2946
        Telephone: (503) 808-4385





Oregon Department of Environmental Quality (DEQ)
Water Quality 401 Certification

Notice Issued: October 1, 2021
Written Comments Due: October 31, 2021

Corps of Engineers No: NWP-2021-412
Oregon Department of State Lands No: APP0063312    

WHO IS THE APPLICANT: Columbia Crossings, LLC

LOCATION OF CERTIFICATION ACTIVITY: See attached U.S. Army Corps of Engineers public notice.

WHAT IS PROPOSED: See attached U.S. Army Corps of Engineers public notice on the proposed project.

NEED FOR CERTIFICATION: Section 401 of the Federal Clean Water Act requires applicants for Federal permits or licenses to provide the Federal agency a water quality certification from the State of Oregon if the proposed activity may result in a discharge to waters of the state.

DESCRIPTION OF DISCHARGES: See attached U.S. Army Corps of Engineers public notice on the proposed project.

WHERE TO FIND DOCUMENTS: Documents and materials related to water quality issues as a result of the proposal are available for examination and copying at Oregon Department of Environmental Quality, 401 Water Quality Permit Coordinator, Northwest Region, 700 NE Multnomah Street, Suite 600, Portland, Oregon 97232. Other project materials are available by contacting the Corps per the attached public notice.

Scheduling an appointment will ensure that water quality documents are readily accessible during your visit. To schedule an appointment please call DEQ Water Quality at Northwest Region at (503) 229-5623.

Any questions on the water quality certification process may be addressed to the 401 Permit Coordinator at (503) 229-5623 or toll free within Oregon at (800) 452-4011. People with hearing impairments may call the Oregon Telecommunications Relay Service at (800) 735-2900.


Public Hearing: Oregon Administrative Rule (OAR) 340-48-0032 (2) states that “The Corps provides public notice of and opportunity to comment on the applications, including the application for certification, provided that the department (DEQ), in its discretion, may provide additional opportunity for public comment, including public hearing.” 

Written comments: Written comments on project elements related to water quality must be received at the Oregon Department of Environmental Quality by 5 p.m. on the date specified in the upper right section on page one of this notice. Written comments may be emailed or mailed as described below: 

Email -

Mail - Oregon Department of Environmental Quality, Northwest Region
           700 NE Multnomah Street, Suite 600
           Portland, Oregon 97232           
           Attn: 401 Water Quality Permit Coordinator 

WHAT HAPPENS NEXT: DEQ will review and consider all comments received during the public comment period. Following this review, certification of the proposal may be issued as proposed, issued with conditions, or denied. You will be notified of DEQ's final decision if you submit comments during the comment period. Otherwise, if you wish to receive notification, please call or write DEQ at the above address.

ACCESSIBILITY INFORMATION: DEQ can provide documents in an alternate format or in a language other than English upon request.  Call DEQ at (800) 452-4011 or email