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other peak hours. Alternative sources of trip generation data for comparable land uses or other <br />studies may be submitted for approval by the County Engineer or designee. <br />B. Traffic Distribution - The directional distribution of daily traffic to and from the project shall be <br />provided by the applicant. The applicant shall describe the basis for the traffic distribution, such <br />as use of past traffic counts, relationship to area cities, relationship to destinations, and other <br />criteria. The applicant shall provide a map showing the trip distribution and the assigned daily <br />trips on the roadway network. <br />C. Scoping Letter - The scoping letter shall outline the proposed scope of the TIA including a <br />detailed description of the project, trip generation, strip distribution, analysis assumptions, and a <br />proposed list of study intersections that are affected by forty (40) daily trips. The scoping letter <br />should indicated the study intersections and the peak hours to be evaluated. All study <br />intersections must be evaluated for the PM peak hour, but additional peak hour periods need to <br />be included for land uses that generated high volumes of AM peak hour, weekends, or off-peak <br />traffic. <br />D. Scope Review - The County will review the scoping letter and, either provide an approval of the <br />scope, or provide written list of scope adjustments needed to meet the requirements of the <br />analysis. As part of the approval of the scope, the County will provide a background growth rate, <br />a current list of approved development projects ("pipeline projects") that need to be included in <br />the analysis and for use in the concurrency evaluation. <br />12.04.02.050 Transportation Impact Analysis General Requirements. <br />The following requirements shall apply to the analysis of transportation impacts: <br />A. The applicant shall use the applicant's own resources to prepare the transportation impact <br />analysis and to acquire data for existing traffic conditions. As a courtesy, the County may provide <br />data to the applicant if it is available. <br />B. A transportation impact analysis shall be prepared by and/or under the supervision of a <br />registered engineer in the State of Washington. <br />C. The transportation impact analysis shall be based on traffic counts obtained within twelve (12) <br />months of the fully complete date of the development application as determined under KCC <br />15A.03.040. The traffic counts shall reflect typical and representative traffic conditions within <br />transportation corridors and at intersections. PM peak hour turning movement counts shall be <br />collected to reflect typical travel conditions for a minimum of two hours at fifteen -minute <br />intervals to determine the peak hour. These counts shall include heavy vehicle percentages and <br />pedestrian and bicycle crossing volumes. If identified in the TIA scope, turning movement counts <br />for other periods (e.g. AM or weekend) shall be collected. In addition, daily traffic counts shall be <br />Title 12 Kittitas County Code I Draft No. 5— Working Draft for Adoption 6/12/2018 <br />29 <br />