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Traffic Impact Study <br />Robinson Property <br />In addition to the two site plan alternatives, two potential Carl Street access sub -alternatives were <br />analyzed in this study: <br />• No Carl Street Connection: <br />o No connection would be made between the proposed development and Carl Street to <br />the south. The existing disconnected segments of Carl Street south of the proposed <br />development would remain as such. <br />• With Carl Street Connection: <br />o A connection would be made between the proposed development and Carl Street to the <br />south. The existing disconnected segments of Carl Street south of the proposed <br />development would be connected as well. <br />It should be noted that linking the two existing disconnected segments of Carl Street in the absence <br />of the proposed development would likely result in a slight redistribution of existing residential <br />neighborhood traffic patterns. However, such a traffic pattern redistribution would be expected to <br />produce a negligible operational impact on existing study area intersections. Furthermore, the two <br />existing disconnected segments of Carl Street are unlikely to be linked without construction of the <br />proposed development. Consequently, a Carl Street connection was not evaluated under future no <br />build conditions. <br />4.1 Trip Generation and Distribution <br />Trip generation estimates for each of the two proposed development site plan alternatives were <br />completed for the weekday a.m. and p.m. peak hours as well as on a daily basis by utilizing the <br />Institute of Transportation Engineers Trip Generation Manual, 11 th Edition (ITE TGM). Results <br />of the trip generation estimates, shown in Table 7, indicate the PUD Concept Plan would be <br />expected to generate approximately 324 a.m. peak hour trips, 413 p.m. peak hour trips, and <br />4,626 daily trips. Alternatively, the Yield Plan would be expected to generate approximately <br />391 a.m. peak hour trips, 476 p.m. peak hour trips, and 5,656 daily trips. <br />Table 7 — Trip Generation Estimates <br />Land Use <br />Units <br />Size <br />AM Peak <br />Trips <br />Hour Trips <br />Trips <br />(1) <br />Tota I <br />PM Peak <br />Trips <br />Hour Trips <br />Trips <br />(1) <br />To tal <br />Daily <br />(ITE Code) <br />. <br />Trips <br />PUD Concept Plan (557 Units Total) <br />Single -Family Detached Housing (210) <br />Dwellings <br />1 242 1 <br />43 <br />1 123 1 <br />166 <br />1 144 1 <br />84 <br />1 228 <br />1 2,276 <br />Single -Family Attached Housing (215) <br />Dwellings <br />315 <br />49 <br />109 <br />158 <br />105 <br />80 <br />185 <br />2,350 <br />Total Trips <br />92 <br />232 <br />324 <br />249 <br />164 <br />413 <br />4,626 <br />Yield Plan (707 Units Total) <br />Single -Family Detached Housing (210) <br />Dwellings <br />149 <br />28 <br />79 <br />107 <br />91 <br />54 <br />145 <br />1,456 <br />Single -Family Attached Housing (215) <br />Dwellings <br />558 <br />88 <br />196 <br />284 <br />189 <br />142 <br />331 <br />4,200 <br />Total Trips <br />116 <br />275 <br />391 <br />280 <br />196 <br />476 <br />5,656 <br />Source: Institute of Transportation Engineers (ITE) Trip Generation Manual, 11th Edition. <br />(1) Trips generated for the weekday a.m. and p.m. peak hours of the adjacent roadway network. <br />ALLIANT <br />9% E.-E-1- <br />Alliant No. 221-0180.1 12 <br />June 30, 2022 <br />