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3.0 TRAFFIC CONSULTANT PRESENTATION <br />Scott Leftwich, Leftwich Consulting Engineers, addressed the issues of how an <br />impact fee is taken into account. Through a PowerPoint Presentation he discussed the <br />"consumption -based Impact Fee Theory," looking at the fees charged to new development based <br />on the roadway capacity consumed for that new development. He stated that the existing <br />roadway deficiencies are not charged to new development, and the needed improvements are <br />based on the Long Range Transportation Plan (LRTP) developed by the County. <br />Mr. Leftwich displayed computerized images to explain capacity consumed by <br />proposed land use; calculation of impact fees (costs to credits); and discussed the traffic impact <br />fee calculation, vehicle miles of travel (VMT), trip rate, percent of new trips, and the average trip <br />length. <br />Vice Chairman Davis questioned the percentage of new trips calculation and <br />explained why he felt commercial development saves trips. He thereafter engaged in discussion <br />with Mr. Leftwich on whether certain trips should be regarded as a pass -by or a trip. <br />Mr. Leftwich continued his presentation by discussing primary trip type <br />examples, and comparing primary versus diverted, pass -by (captured) and secondary trips. <br />Commissioner Flescher questioned the trip type examples given and wanted to <br />know how those primary examples could apply to justify an increase in impact fee and in <br />expense. <br />Mr. Leftwich continued his explanation of trip type examples, and how the <br />surveys were conducted, using origin and destination to determine if a trip exists and measuring <br />September 17, 2008 6 <br />Public Workshop <br />