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Comment period

Gas Transmission Northwest Station #8, Wallula

Air Operating Permit

Sept. 18, 2025, 12 a.m. - Oct. 19, 2025, 11:59 p.m. PT

We propose to approve the renewal of Gas Transmission Northwest's Station #8 air operating permit (AOP).

Gas Transmission Northwest (GTN) applied to renew their air operating permit for compressor station #8 located at 638 Lambdin Road, Wallula, in Walla Walla County. The station uses natural gas compressors to maintain the pressure of natural gas flowing through pipelines that run from Canada to California, passing through Washington.

Documents for review

We determined this proposal satisfies the requirements of Chapter 173-401 WAC. We plan to approve the renewal of the air operating permit.

To comment or request an online public hearing, use one of the ways listed below by October 19, 2025. A request for an online public hearing must include the interest of the person making the request and why a public hearing is needed. 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 September 18, 2025.

Background

Commercial and industrial businesses that emit large amounts of air pollution are required to get an air operating permit. An air operating permit is a master document that lists all of the air pollution requirements that apply to a business or industry. We issue these permits, along with other clean air agencies in Washington.

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Comment online

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Comment by mail

Andy Kruse
Washington Department of Ecology Eastern Regional Office
4601 North Monroe Street
Spokane, WA 99205-1295
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Questions

Andy Kruse
Environmental Engineer
andy.kruse@ecy.wa.gov
509-405-0299
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