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Exhibit A <br />Fehr&Peers <br />Upper Kittitas County Model Update <br />Fehr & Peers has prepared the following scope of work to update the Kittitas County travel demand <br />model, which last underwent a major update in2Ol7. The model update would establish a new <br />existing year and would be calibrated and validated using observed traffic counts. The model would <br />also be updated to run with the latest version of the Visum software. <br />As part of this effort, the model will be enhanced to provide more detail and expanded forecasting <br />capubilil.ies irr Ll te Upper Cuurity alea. To better support planning in thc Uppcr County, a cocondsry <br />time period would be incorporated to reflect peak recreational travel separate from the traditional <br />weekday PM peak hour time period currently in the model. ln addition, the model would be enhanced <br />to better estimate travel generated by Upper County vacation homes and secondary residences. <br />The general area representing Upper Kittitas County within the countywide model is shown below. <br />:) <br />Upper County <br />Scope of Work <br />The tasks required to complete this project are described in more detail below. The traditional <br />weekday PM peak hour scenario will be calibrated and validated to Winter 2026 conditions. The <br />development of this model scenario will be completed before beginning work on a second time <br />period representing peak summer recreational travel. This secondary period would be chosen <br />through consultation with the County and cities to reflect visitor travel during Summer 2026 on a <br />typical Friday or Sunday. The model would not reflect conditions on a summer holiday weekend when <br />travel demand is highest. <br />Kittitas County Model Update I I