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Comment Period

Boeing 737 Max Storage, Nonroad Engines, Moses Lake

Air Quality Notification – Opportunity to request a public comment period

Sept. 9, 2020 - Sept. 24, 2020, 11:59 p.m.

Ecology is notifying the public about its intent to approve nonroad engines to power heaters for Boeing 737 Max storage in Moses Lake.

The Boeing Company submitted an air quality notice of intent to operate nonroad engines for each of its three aircraft storage facilities at the Grant County International Airport in Moses Lake. The three separate facilities used to store aircraft are:

  • Facility 1: Boeing-owned property and nearby leased Compass Rose area to the west of Boeing-owned property
  • Facility 2: ASPI-owned leased property
  • Facility 3: Port of Moses Lake property (four leased areas)

Boeing requests the use of portable generators from about October 2020 to June 2021 to heat and dehumidify the 737 MAX airplanes stored at each of these facilities. Boeing intends to use Tier 4-certified portable diesel generators, each rated up to approximately 171 brake horsepower.

Ecology plans to approve this request. We will hold a public comment period only if a written request is received by Sept. 24, 2020.

Review proposal and SEPA checklist.


Ecology complies with Chapter 173-400-035 WAC which provides the definition, applicability, and fuel standards for nonroad engines. 

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Robert Koster, P.E.
4601 N. Monroe St., Spokane, WA 99205

To request ADA accommodation, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.