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09-24-18_FULL PACKET
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09-24-18_FULL PACKET
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<br />LINSCOTT, LAW & GREENSPAN, engineers LLG Ref. 2-17-3881-1 <br />Tustin Avenue Retail, Santa Ana <br />N:\3800\2173881 - Tustin Avenue Retail, Santa Ana\Report\3881 - Tustin Avenue Retail, Santa Ana TIA 03-13-18.doc <br /> 17 <br />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 <br />cumulative projects in the study area, as well as account for regular growth in traffic volumes due to <br />the 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 2017 existing traffic volumes, this <br />factor results in a 2.0% growth in existing volumes to the near-term horizon year 2019. <br />6.2 Cumulative 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 (cumulative projects) within a <br />two-mile radius of the proposed project has been researched at the City of Santa Ana and City of <br />Tustin. With this information, the potential impact of the proposed Project can be evaluated within <br />the context of the cumulative impact of all ongoing development. <br />Based on our research during the scoping process, there are sixteen (16) cumulative projects in the <br />City of Santa Ana and eight (8) cumulative projects in the City of Tustin that are being processed for <br />approval. These twenty-four (24) cumulative projects have been included as part of the cumulative <br />background setting. <br />Table 6-1 provides a brief description for each of the twenty-four (24) cumulative projects. Figure <br />6-1 graphically illustrates the location of the twenty-four (24) cumulative projects. These cumulative <br />projects are expected to generate vehicular traffic, which may affect the operating conditions of the <br />key study intersections. <br />Table 6-2 summarizes the trip generation potential for all twenty-four (24) cumulative projects on a <br />daily and peak hour basis for a typical weekday. As shown, the cumulative projects are expected to <br />generate 30,720 daily trips, with 2,501 trips (1,176 inbound, 1,325 outbound) anticipated during the <br />AM peak hour and 2,962 trips (1,506 inbound, 1,456 outbound) produced during the PM peak hour. <br />The AM and PM peak hour traffic volumes associated with the twenty-four (24) cumulative projects <br />in the Year 2019 are presented in Figures 6-2 and 6-3, respectively. Figure 6-3 also presents the <br />daily related project traffic volumes. <br />6.2.1 Year 2019 Traffic Volumes <br />Figures 6-4 and 6-5 present the AM and PM peak hour cumulative traffic volumes (existing traffic + <br />ambient growth + cumulative projects) at the four (4) key study intersections for the Year 2019. <br />Figure 6-5 also presents the Year 2019 daily cumulative traffic volumes. <br />Figures 6-6 and 6-7 illustrate the Year 2019 forecast AM and PM peak hour traffic volumes, with <br />the inclusion of the trips generated by the proposed Project. Figure 6-7 also presents the Year 2019 <br />daily cumulative plus project traffic volumes. <br />2-88
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