2023-02-13-minutes-public-works-study-session

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KITTITAS COUNTY DEPARTMENT OF PUBLIC WORKS PUBLIC WORKS — BOARD OF COUNTY COMMISSIONERS 2023 STUDY SESSION STAFF REPORT STUDY SESSION DATE: February 13, 2023 TOPIC: Task Order with WSE Supporting the West Interchange Study ACTION REQUESTED: Direct Staff LEAD STAFF: Mark R. Cook and Arden Thomas RECOMMENDATION: Direct staff prepare enabling documents for Board action. BRIEFING SUMMARY: • For several years, the Flood Control Zone District (FCZD) has been meeting with West Interchange property owners discussing economic development issues and mapped floodplain. • Recently, CenterFuse secured a Department of Commerce planning grant to evaluate land use development in the West Interchange area. • The FCZD budgeted a floodplain modeling effort in the West Interchange area in our 2023 Capital Facility budget — anticipating the land use study. • PW and WSE have developed a scope of work and fee and is ready to contract the modeling effort. BACKGROUND: After several years of discussion, efforts are underway examining land use actions in the West Interchange area of Ellensburg. Supporting the effort, the FCZD budgeted floodplain modeling support in our 2023 Capital budget. Staff is now ready to contract for modeling support services. DISCUSSION: WSE was recently selected as a Task Order consultant for PW. WSE is the firm that has created two-dimensional flood models for Currier and Reecer Creeks for the FCZD. The proposed scope of modeling support is summarized below: • Evaluate inset floodplain storage for the current alignments of Currier and Reecer Creeks in the West Interchange area using the 100 -year flood event. • Evaluate inset floodplain storage for a preferred alternative combing the alignments of Currier and Reecer Creeks in the West Interchange area using the 100 -year flood event. Page 1 of 3 Public Works "Work Session Staff Report", 2023