2022-08-08-minutes-public-works-study-session

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CENTURY WEST ENGINEERING TASK ORDER #12 AGREEMENT AND AUTHORIZATION FOR ENGINEERING CONSULTING SERVICES By this Agreement dated July 19, 2022, the Kittitas County (Client) authorizes Century West Engineering Corporation (Consultant) to carry out and complete the following Services in consideration of the mutual covenants set forth in the Professional Services Agreement (Master Agreement), executed between Kittitas County and CWEC, and dated on October 7, 2019; and for projects with Federal funding the following attachment: FAA Professional Service (A/E) Contract Provisions. Project:Task Order #12 — Wetland and Stream Mitigation Design Project No.: 12436.018.01 Scope of Services: Overview Kittitas County (the County) has solicited Century West Engineering services for design development of on -Airport wetland and stream mitigation located in the northwest corner of the Airport. An exhibit showing the general area of mitigation, has been attached. Additionally, a figure showing additional detail has been included on the last page of this scope. That figure was taken from a memo titled Justification for Wetland Mitigation at Bowers Field (ELN) dated December 9, 2021 written by Jacobs Engineering for Kittitas County Generally, the mitigation involves re-establishment of wetlands through removal of historic fill and deteriorated asphalt, which formally served as a taxilane, and regrading the surface and planting of select plant species. The mitigation is a requirement in the County's recently approved Environmental Assessment (EA) and of the FAA's Finding of No Significant Impact (FONSI). As stated in the FONSI, the requirements include: • Provide mitigation for impacts to water resources (0.55 -acre of wetland and 0.03 acre of stream) resulting from the installation of storage berms for flood reduction and drainage improvements as well as runway improvements. • Proposed mitigation includes removal of approximately 1.1 acres of derelict pavement adjacent to wetlands in the northwest corner of the Airport. Mitigation would be developed to meet federal, state, and local requirements through the re-establishment of impacted wetlands, improved wetland connectivity, and restoration of lost functions and values. Mitigation acreages proposed would follow Washington State Joint Guidance from the USACE and Ecology and provide a replacement ratio of 2:1. • Provide monitoring and adaptive management of mitigation site per the requirements of the permittee - responsible mitigation plan approved by USACE and Ecology. • Avoid and minimize impacts to Whiskey Creek water quality during construction by implementing the following requirements of the USACE Nationwide 401 Water Quality Certification. This project scope addresses the first two bullet points above and provides for the preparation of mitigation plans, technical specifications, and bidding documents for construction. The second two bullet points will be addressed along with construction administration and observation services under a separate agreement.