Notice of Mitigated Determination of Non-Significance (MDNS)
City of Spokane Valley
Date Issued: November 21, 2025
Name & File Number: Honeywell Project Copperfield / SEP-2025-0008
Proposal Description: Expansion of an electronics manufacturing facility consisting of a new 130,029 sq. ft. manufacturing building, expansion of existing chemical storage building, expansion of existing wastewater treatment facility, and 136 additional parking spaces.
Proposal Location: Parcel number 45111.9044, addressed at 15128 E Euclid Avenue, at the southwest corner of the intersection between Euclid Ave and Sullivan Rd, further located in the NE ¼ of NE ¼ of Section 11, Township 25 North, Range 44 East, Willamette Meridian, Spokane County, Washington
APPLICANT: Honeywell Electronic Materials Spokane, 15128 E Euclid Avenue, Spokane Valley, WA 99216
OWNER: Honeywell Electronic Materials Manufacturing, LLC. PO Box 4900 Dept 356, Scottsdale, AZ 85261
Lead Agency: City of Spokane Valley
Review: The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. Pursuant to WAC 197-11-350, the proposal has been conditioned to include necessary mitigation measures to avoid, minimize, or compensate for probable significant impacts. An Environmental Impact Statement (EIS) is not required under RCW 43.21C.030(2)(c). The necessary mitigation measures are listed below. This decision was made after review of a completed environmental checklist and related information on file with the lead agency. This information is available to the public on request.
Determination: This MDNS is issued under WAC 197-11-340(2); the lead agency will not act on this proposal for 14 days from the date issued. Written comments may be submitted November 21, 2025 through December 5, 2025.
Staff Contact: Levi Basinger, Associate Planner, City of Spokane Valley, 10210 East Sprague Ave, Spokane Valley, WA 99206, PH (509) 720-5332; lbasinger@spokanevalleywa.gov
Responsible Official: Steve Roberge, Planning Manager
Mitigation Measures:
1. Prior to issuance of an Engineered Grading Permit, an Inadvertent Discovery Plan (IDP) shall be prepared by the applicant and submitted to the City of Spokane Valley. A copy of the IDP shall be kept on site at all times during construction activities.
2. Prior to the issuance of a building permit, the applicant shall enter into a voluntary mitigation agreement with the City of Spokane Valley to make the proportionate share contribution towards improvements at the interchange of Sullivan Road at Trent Avenue and shall pay the City the voluntary mitigation fee of $180,542. (Approximately 1.48% of the estimated $12,202,800 project cost applicable to trips from this analysis zone.)
Appeal: An appeal of this determination shall be submitted to the City of Spokane Valley Community Development & Economic Development Department within 14 calendar days after the date issued. Appeals may be submitted from November 21, 2025, through 4:00 p.m. on December 5, 2025. The appeal must be written and specific factual objections are made to the City’s threshold determination. Appeals shall be conducted in conformance with Spokane Valley Municipal Code (SVMC) 17.90 Appeals, and any required fees pursuant to the City’s adopted Fee Schedule shall be paid at the time of appeal submittal. Pursuant to WAC 197-11-680, appeals shall be limited to a review of a final threshold determination.
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Patricia Rhoades, Deputy City Clerk
Spokane Valley
PUBLISH: November 21, 2025
