Environmental Review

Chehalis River Basin Flood Damage Reduction Project

Scoping Period on the Chehalis River Basin Flood Damage Reduction Project

To reduce flood damage in the Chehalis River Basin, the Chehalis River Basin Flood Control Zone District is proposing to construct a new flood retention facility and temporary reservoir near the town of Pe Ell, Washington, and levee improvements around the Chehalis-Centralia Airport in Chehalis, Washington. The Washington Department of Ecology (Ecology) and U.S. Army Corps of Engineers (USACE) have determined the proposal could have significant adverse environmental impacts and will require formal studies  through separate state and federal Environmental Impact Statement (EIS) processes.

The first step in the environmental review process is to receive public input on the scope of the EIS for the proposed project to help identify project alternatives, probable significant adverse impacts, potential mitigation measures, and licenses or other approvals that may be required. Ecology and USACE are holding a 31-day EIS scoping period from September 28 through October 29, 2018. Click here for information on the proposed project, Ecology’s Determination of Significance and Request for Comments, and the USACE Special Public Notice on Notice of Intent. The different ways to provide scoping comments are described here.

Public Scoping Period

September 28 through October 29, 2018

The purpose of scoping is to seek public comment on the environmental issues that should be studied. Scoping comments can only be considered if they are submitted during the comment period. Please contact us to sign-up for email updates.

Public Scoping Meetings Will Be Held

October 16 and 17, 2018

There are two public scoping meetings planned in the lower and upper Chehalis River Basin.

Meeting Locations and Format

Tuesday, October 16

Montesano City Hall
112 N. Main Street
Montesano, WA 98563

Wednesday, October 17

Centralia College – Bowman Rotary Banquet Room (see campus map)
600 Centralia College Boulevard
Centralia, WA 98531

  • Open house from 5 p.m. to 8 p.m.
  • Short presentation at 5:15 p.m.
  • Oral comments received through 8 p.m.

All scoping meeting materials are available for online viewing here.

For More Information

Contact Us

Environmental Contacts


Environmental Review Process

Ecology will evaluate the proposal under the State Environmental Policy Act (SEPA). Visit the SEPA Process page for more information.

USACE, representing the federal government, will conduct a separate, but synchronized review as required by the National Environmental Policy Act (NEPA). Visit the NEPA Process page for more information.

Both EIS documents will provide a comprehensive and objective environmental review. This analysis is necessary before an agency can act on any permit related to the Chehalis River Basin Flood Control Zone District’s proposal.

Scoping Meeting Materials

Equal Access

To ensure equal access to materials, Ecology and USACE will provide auxiliary aids/services to persons with disabilities. Please call (206) 219-5900 with any requests. Persons with hearing loss and speech disability can contact 711 for the Washington Relay Service. Persons with a speech disability may call TTY at (877) 833-6341. All meeting-related requests must be received 72 hours in advance.

En Español

El Departmento de Ecología y el Cuerpo de Ingenieros del Ejército de los Estados Unidos están conduciendo los estudios de los impactos ambientales para un proyecto propuesto para una presa de retención de inundaciones cerca de Pe Ell, Washington y mejoras en el dique del Aeropuerto de Chehalis-Centralia en el condado de Lewis para la reducción de daños por inundación. Para más información, favor de contactar a (206) 219-5900.