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Aspect CO N SU LT I N G Contract Change Contract No.: 16 / Project No.: 150338 I Date: April 16, 2018 Client: Kittitas County Project Name: Consumptive Use Pilot Study Description of Work Cost Aspect Consulting, LLC (Aspect) understands that Kittitas County and Patrick Deneen are partnering on a pilot study to quantitatively determine the percent of consumptive use associated with indoor-only domestic use. The results of the study will be used to determine the efficacy of alternative mitigation strategies in subbasins currently without suitable mitigation options (e.g., yellow and red zones). We understand that the parties have requested Aspect provide oversight during design, implementation, and reporting of the study results. These services will be provided on a Time and Materials basis. Based on this understanding, Aspect will complete the following tasks: Task 1 -Preparation and Presentation to WTWG. Under this task, Aspect will prepare all materials and present the basis of the pilot-study to the Yakima Basin Water Transfer Working Group (WTWG). We will use the ex isting materials as the basis for the presentation . We under tan d the group would lik e to pre sent at the May 7th WTW G mee ting. r q uiring submittal for draft materials by May 30th • Wed · not expect an official endorsement from the group, but rather a facilitated discussion to get feedback and general agreement on the pilot study concept and methodology . Task 2 -Pilot Study Methodology Design. Using the existing narrative and feedback from the WTWG , Aspect will develop a basis for design. The design will not only include the physical requirements of the pilot study (meters, membrane bioreactor, cisterns), but also the approach, including necessary measures for quality assurance and control. We anticipate facilitating one meeting with key basin stakeholders Yakama Nation, WDFW , Ecology) to review and discuss design details, including proper site-specific siting of the drain fields and supplemental cisterns . Proper siting will be important to ensure all potential tributary (i.e . Fowler Creek) impacts are mitigated. Bainbridge Island Office : Bellingham Office: Bend Office: Seattle Office: Portland Office: Wenatchee Office: Yakima Office: 350 Madison Avenue North, Bainbridge Island, WA 98110 907 Harris Avenue , Suite 301, Bellingham, WA 98225 1725 SW Chandler, Suite 102, Bend, OR 97702 401 Second Avenue S, Suite 201, Seattle, WA 98104 522 SW Fifth Avenue, Suite 301, Portland, OR 97204 23 South Mission Avenue, Suite C, Wenatchee, WA 98801 123 East Yakima Avenue, Suite 200, Yakima, WA 98901 www.aspectconsulting.com Task 1: $2,000 Task 2: $3,500 206) 780-9370 360) 746-8964 971) 865-5896 206) 328-7443 971) 865-5890 509) 888-5766 509) 895-5957