The Federal Energy Regulatory Commission (FERC) issued a letter to Xcel Energy, specifically addressed to Mr. Kris Fox, Senior Operations Manager, regarding the seismic analysis review for the Stagecoach Dam, part of the Tacoma Project (FERC No. 12589). The letter, dated March 18, 2026, responds to a Technical Memorandum submitted by Mr. Dean Steines on December 30, 2025.
The memorandum, prepared by W.W. Wheeler and Associates Inc., compares seismic analyses to address Recommendation 22 from the 11th Part 12D Report. FERC noted that the memorandum provides a comparison with a site-specific seismic hazard assessment (SHA) report prepared by Gannet Fleming in January 2023, which has not yet been submitted for review. FERC requested that Xcel Energy revise the memorandum to include findings against the SHA study of record or alternatively submit the updated SHA for review.
The letter stipulates that Xcel Energy must address the comment or provide a plan and schedule within 30 days. The submission should be filed using FERC's eFiling system, with specific instructions provided for the filing process.
