2021-02-22-minutes-public-works-study-session

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KITTITAS COUNTY CONSERVATION DISTRICT WHISKEY CREEK — ELLENSBURG WATER COMPANY FISH PASSAGE IMPROVEMENTS SCOPE OF WORK February 5, 2021 At the request of the Kittitas County Conservation District (KCCD), this Scope of Work outlines tasks associated with preparing an engineering analysis and design for the Whiskey Creek crossing of the Ellensburg Water Company (EWC) canal located northwest of the City of Ellensburg, in Kittitas County, Washington. Presently, Whiskey Creek drops beneath the EWC canal in a corrugated metal culvert. The Washington Department of Fish and Wildlife (WDFW) passage and diversion screening inventory database lists the Whiskey Creek at EWC culvert as a fish barrier due to the culvert slope. The Whiskey Creek crossing EWC canal, shown on Figure 1, would be made fish passable by constructing canal headwalls and forcing the canal water to pass beneath the creek in a siphon, allowing the creek to be a natural and free flowing stream. There is no water pickup or delivery by EWC at the Whiskey Creek crossing, but an EWC spillgate at this location will need to be incorporated into the analysis and design. Also, a Whiskey Creek channel spanning precast concrete bridge will be incorporated into the design for canal operations. TASK 1- PROJECT MANAGEMENT AND MEETING ATTENDANCE Anderson Perry & Associates, Inc. (AP) will attend a kickoff meeting with the canal owner/operator(s) to discuss concepts and gather information related to design criteria. AP will prepare invoices based on employee timesheet review and accrued project expenses. The monthly invoices will be sent by email to KCCD staff and accompanied with a brief monthly progress summary and progress status. AP will prepare meeting notes after each meeting. Deliverable ❑ Invoices, Project Status, and Meeting Notes TASK 2 - SURVEY AND DATA COLLECTION AP will collect su rvey data necessary to develop the basis of design engineering report for the project site. The survey will include topographic information at the existing diversion, water surface elevations (including estimated irrigation water surface elevation and Whiskey Creek ordinary high water mark), and coordination with EWC staff. Utility identification and locates will be included as needed. A pebble count survey will be completed as part of the field work. Finally, a base map will be generated for the design. AP will prepare a Geotechnical Report for the site using backhoe test pits excavated to approximately 20 feet or refusal. Test pit logs will be developed for each test pit, including depths to groundwater, soil type, and characteristics and included in the Geotechnical Report. Deliverables ❑ Site Survey ❑ Pebble Count ❑ Geotechnical Report 2/5/2021 Anderson Perry & Associates, Inc. S.\D0cs\KCCD\157-16 Whiskey Creek— Ellensburg Water Company Fish Passage lmprovement5Wreen%ent\Smpe of Work.dou Page 1 of 3