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LINSCOTT, LAW & GREENSPAN, engineers LLG Ref. 2-17-3881-1 Tustin Avenue Retail, Santa Ana N:\3800\2173881 - Tustin Avenue Retail, Santa Ana\Report\3881 - Tustin Avenue Retail, Santa Ana TIA 03-13-18.doc 25 8.2 Year 2019 Traffic Conditions Table 8-2 summarizes the peak hour Level of Service results at the four (4) key study intersections for the Year 2019 horizon year. The first column (1) of ICU/LOS values in Table 8-2 presents a summary of existing AM and PM peak hour traffic conditions. The second column (2) lists projected cumulative traffic conditions (existing plus ambient plus cumulative projects traffic) based on existing intersection geometry, but without any traffic generated from the proposed Project. The third column (3) presents forecast Year 2019 near-term traffic conditions with the addition of Project traffic. The fourth column (4) shows the increase in ICU value due to the added peak hour Project trips and indicates whether the traffic associated with the Project will have a significant impact based on the LOS standards and significant impact criteria defined in this report. The fifth column (5) presents the resultant level of service with the inclusion of recommended traffic improvements, where needed, to achieve an acceptable level of service. 8.2.1 Year 2019 Cumulative Traffic Conditions An analysis of future (Year 2019) background traffic conditions indicates that with the addition of ambient traffic growth and cumulative projects traffic, one (1) of the four (4) key study intersections will operate at an adverse LOS. The location identified below is forecast to operate at an unacceptable level of service: AM Peak Hour PM Peak Hour Key Intersection ICU/HCM LOS ICU/HCM LOS 6. SR-55 SB Ramps at Fourth Street 0.968 E -- -- The remaining three (3) key study intersections are forecast to continue to operate at an acceptable LOS based on the LOS criteria identified in this report. 8.2.2 Year 2019 Cumulative Plus Project Conditions Review of columns (3) and (4) of Table 8-2 indicate that traffic associated with the proposed Project will not significantly impact any of the four (4) key study intersections, when compared to the LOS standards and significant impact criteria specified in this report. Although the intersection of SR-55 SB Ramps at Fourth Street is forecast to operate at an adverse LOS E during the AM peak hour, with the addition of Project traffic, the proposed Project is expected to add less than 0.010 to the ICU value. The remaining three (3) key study intersections are forecast to continue to operate at an acceptable LOS with the addition of project generated traffic in the Year 2019. Appendix C also presents the near-term ICU/LOS calculations for the four (4) key study intersections. 2-103