Snohomish County PUD No. 1 DETERMINATION OF NONSIGNIFICANCE (DNS) (WAC 197-11-970) Name of Proposal: Paradise Substation Description of Proposal: The proposed project includes the construction and operation of a new electrical distribution substation located at 22422 Echo Lake Road, Snohomish, Washington 98296. The substation is needed to maintain reliability and support load growth in the District’s southeast Snohomish County service area. The project consists of approximately three (3) acres of clearing on-site to construct a 1.02-acre substation yard, along with driveways, stormwater facilities, fencing and landscaping. Site construction is proposed to start in May of 2027, with electrical construction continuing through 2028. Proponent: Public Utility District No. 1 of Snohomish County Location of Proposal, including street address, if any: Tax Parcel No.: 27062900401600 Approx. Address: 22422 Echo Lake Rd., Snohomish, WA 98296 Parcel A of Survey recorded in Volume 13 of Surveys, Pages 291 through 293, inclusive, recorded under Snohomish County Recording No(s). 8104175002, records of Snohomish County, Washington, being a portion of the South half of Section 29, Township 27 North, Range 6 East of the Willamette Meridian, records of Snohomish County, Washington. Lead Agency: Public Utility District No. 1 of Snohomish County The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21.030(c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public upon request. _____ There is no comment period for this DNS. __x__ This DNS is issued under WAC 197-11-340(2); the lead agency will not act on this proposal for 14 days from the date below. Comments must be submitted by Wednesday, November 18th, 2026. Responsible Official: Colleen Murphy Date: November 4th, 2026 Position/title: Manager, Environmental Affairs Telephone: 425-783-5504 or 1-877-783-1000 extension 5556 Address: 1802 75th St. SW, P.O. Box 1107, Everett, WA 98206 Documents reviewed as part of this Determination of Non-significance can be viewed at: http://www.snopud.com/sepa or by request. Published: November 7, 14, 2026. EDH1038796

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