Sudbury Road Landfill, Walla Walla
Air quality notice of construction application
Aug. 19, 2026, 12 a.m. - Sept. 21, 2026, 11:59 p.m. PT
We propose to approve Sudbury Road Landfill's air quality notice of construction (NOC) application.
Sudbury submitted a notice of construction application for the landfill located at 414 Landfill Road, in Walla Walla. Sudbury proposes vertical expansion of waste disposal in Area 7. The expansion includes:
- 744,000 cubic yards of filling (mostly for municipal solid waste)
- Building gravel-surfaced roads within Area 7 footprint to provide access to the active land fill area
- Adding 12 new gas extraction wells (1 for Area 6 and 11 for Area 7)
- Adding 6 horizontal gas collectors
Predicted emission increases from this project are about 1.54 tons per year of criteria air pollutants (mostly carbon monoxide) from the Area 7 expansion.
Document for review
- Sudbury Road Landfill notice of construction (NOC) application and associated documents
- Sudbury Road Landfill draft permit
- Sudbury Road Landfill technical support document
We determined this proposal satisfies the requirements of Chapter 173-400 WAC. We plan to approve the application.
To comment or request an online public hearing, use one of the ways listed below by Sept. 21, 2026. A request for an online public hearing must include the interest of the person making the request and why a public hearing is needed. If you request a public hearing, tell us if you need interpretation in a language other than English. We will hold an online public hearing if there is significant public interest.
To find out if there are more records for this project, contact our Public Records Office.
This notice was posted on Aug. 19, 2026.
Background
A notice of construction permit is required before installing a new source of air pollution or modifying an existing source of air pollution. This permit is sometimes called a "pre-construction permit" because a business must have one before starting construction or operating their business.
A notice of construction air permit limits the amount of air pollutants a business can emit.
Comment online
- Submit your comment by email: andy.kruse@ecy.wa.gov
Comment by mail
Washington Department of Ecology Eastern Regional Office
4601 North Monroe Street
Spokane, WA 99205-1265
Questions
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