Chelan County PUD No. 1, Wenatchee

We propose to approve Chelan County PUD's air quality notice of construction (NOC) application. We will hold a public comment period if one is requested.

Chelan County PUD No. 1 submitted a notice of construction application for their Rocky Reach Dam located at 5000 Highway 97 in Wenatchee. Chelan County PUD proposes to install and operate a 750kW emergency generator.

The proposed project will increase emissions:

• Carbon monoxide
• Nitrogen oxides
• Particulate matter
• Sulfur dioxide
• Toxic air pollutants
• Volatile organic compounds

Documents for review

• Chelan County PUD notice of construction application
• Chelan County PUD draft permit
• Chelan County PUD technical support document
• Chelan County PUD Tier 2 review recommendation

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 Oct. 18, 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 Sept. 18, 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.