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Community Transit — Merrill Creek Facility Renovation — Transportation Analysis 3. Project Impacts heffron transportation inc This section describes conditions that would exist with the proposed Merrill Creek Facility Renovation improvements fully implemented. Vehicle trip estimates associated with the site were added based on planned changes to employee building assignments and revised parking allocations described previously. The changes in traffic patterns and volumes were combined with the 2027-without-project traffic volume forecasts to reflect conditions with the project. Level of service analyses were performed to determine the proposed project's impact on traffic operations. This section also addresses potential impacts to parking. The following sections describe the methodology used to determine the proposed project's impacts. 3.1. Roadway Network No changes to the adjacent roadway network are proposed. 3.2. Traffic Volumes Site Trip Generation Future trip generation for the site was derived based on the employee re -assignments, parking re- allocations, and the long-terin site employment projections (763 employees) reflecting 30% growth. The results are presented in Table 4; the baseline (normalized combined site) trip generation values are also shown with the estimated net change due to the project. As shown, the project is estimated to increase site -generated traffic by 12 PM peak hour trips. It is important to note that these estimates were developed using the site trip generation rate (0.165-trips- per-employee), which was derived by combining observed MCOB trips with estimated trips from 117 administration and modular building employees who are assumed to generate higher levels of PM peak hour traffic. However, since those administrative employees are to be re -assigned to KPCR, the future rate at the Merrill Creek facility may be lower (similar to the observed October 2020 MCOB rate of 0.102-trips per -employee) and the future PM peak hour trip estimates may be conservatively high. Table 4. Future Trip Generation — Community Transit Merrill Creek Facility (combined site) Condition Employment Number of Trips In Out Total Proposed Combined Site with Project Existing Combined Site 763 employees 693 employees 31 95 126 28 86 114 3 9 12 Net Change 70 employees Source: Heffron Transportation, Inc., November 2020 1. Total employees for each site condition based on staffing re -assignment estimated provided by CT, October 2020. Trip Distribution & Assignment Site -generated peak hour traffic was re -assigned to the three access driveway intersections accounting for the planned employee re -assignments and parking supply changes. Figure 8 shows the estimated net changes to site -generated traffic during the PM peak hour; Figure 9 shows the forecast 2027 with - project PM peak hour traffic volumes. December 9, 2020 1 15