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6.0 FUTURE TRAFFIC CONDITIONS <br />6.1 Ambient Traffic Growth <br />Horizon year, background traffic growth estimates have been calculated using an ambient traffic <br />growth factor. The ambient traffic growth factor is intended to include unknown and future related <br />projects in the study area, as well as account for regular growth in traffic volumes due to the <br />development of projects outside the study area. The future growth in traffic volumes has been <br />calculated at one percent (1.0%) per year. Applied to the Year 2019 existing traffic volumes, this <br />factor results in a 6.0% growth in existing volumes to the near -term horizon year 2025. <br />6.2 Related Projects Traffic Characteristics <br />In order to make a realistic estimate of future on -street conditions prior to implementation of the <br />proposed Project, the status of other known development projects (related projects) within a two- <br />mile radius of the proposed project has been researched at the Cities of Santa Ana and Tustin. With <br />this information, the potential impact of the proposed Project can be evaluated within the context of <br />the cumulative impact of all ongoing development. <br />Based on our research during the scoping process, there are twenty-eight (28) related projects in the <br />City of Santa Ana and two (2) related projects in the City of Tustin that are being processed for <br />approval. These thirty (30) related projects have been included as part of the cumulative background <br />setting. <br />Table 6-1 provides a brief description for each of the thirty (30) related projects. Figure 6-1 <br />graphically illustrates the location of the thirty (30) related projects. These related projects are <br />expected to generate vehicular traffic, which may affect the operating conditions of the key study <br />intersections. <br />Table 6-2 summarizes the trip generation potential for all thirty (30) related projects on a daily and <br />peak hour basis for a typical weekday. As shown, the related projects are expected to generate <br />45,942 daily trips, with 3,033 trips (1,458 inbound, 1,575 outbound) anticipated during the AM peak <br />hour and 3,837 trips (1,927 inbound, 1,910 outbound) produced during the PM peak hour. <br />The AM and PM peak hour traffic volumes associated with the thirty (30) related projects in the <br />Year 2025 are presented in Figures 6-2 and 6-3, respectively. Figure 6-3 also presents the daily <br />related project traffic volumes. <br />