Item 18 - Appeal Application Nos. 2023-02 and 2023-03 for Cabrillo Town Center project

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phasing. These improvements will fully mitigate traffic impacts to LOS D. However, as this intersection is outside the jurisdiction of the City of Santa Ana, the City cannot ensure implementation of this improvement. • First Street at Newport Avenue —The intersection of First Street at Newport Avenue currently experiences LOS C or better in the AM and PM peak hours. The addition of background traffic growth is expected to result in a decline in LOS at this intersection to LOS E in the AM peak hour. Although the Overlay Zone would not result in a significant impact at this intersection because the contribution is less than the identified threshold of 0.03, improvements to this intersection are feasible, but not required. The improvements at this intersection include eastbound right turn overlap signal phasing and provision of a third southbound through lane, by constructing a southbound right -turn lane. These improvements will improve intersection performance to LOS C. However, as this intersection is outside the jurisdiction of the City of Santa Ana, the City cannot ensure implementation of this improvement. • Irvine Boulevard at SR-55 Northbound Ramps —The intersection of Irvine Boulevard at SR-55 Northbound Ramps is currently operating at LOS D or better in the AM and PM peak hours. The addition of background traffic growth and traffic from the proposed project is expected to result in a decline in LOS to LOS F in the AM and PM peak hours. The recommended mitigation for this intersection is the construction of a westbound free -right turn lane and the conversion of the third eastbound through lane to a second eastbound left turn lane. These improvements fully mitigate traffic impacts at this intersection to LOS D. • Parkcourt at Cabrillo Park Drive —The intersection of Cabrillo Park Drive and Parkcourt currently operates at LOS C or better in the AM and PM peak hours. Level of service is expected to decline to LOS F in the PM peak hour with the addition of background traffic growth and traffic from the Overlay Zone. The recommended mitigation for this intersection is the prohibition of cross -traffic through the use of median islands, diverters, or other means. This improvement will fully mitigate the traffic impacts at this intersection. • Fruit Street at Cabrillo Park Drive —The intersection of Cabrillo Park Drive and Fruit Street currently operates at LOS B in both the AM and PM peak hours. Future background traffic growth and traffic from the Overlay Zone is expected to result in a decline in LOS to LOS E in the PM peak hour. The recommended mitigation for this intersection is the installation of a traffic signal or a roundabout. Either improvement is expected to result in an improvement to LOS C or better, fully mitigating impacts. • Wellington Avenue at Cabrillo Park Drive —The intersection of Cabrillo Park Drive and Wellington Avenue currently operates at LOS C in both the AM and PM peak hours. Level of service is expected to decline to LOS F in both the AM and PM peak hours due to growth in background traffic and traffic from the Overlay Zone. The Cabrillo Town Center City of Santa Ana Technical Memorandum August 2023 City Council 18 — 621 10/3/2023