Item 27 - Appeal Application Nos. 2020-03 and 2020-04 - Central Pointe Mixed-Use Development

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11.0 RECOMMENDED INTERSECTION IMPROVEMENTS For those intersections where projected traffic volumes are expected to result in unacceptable operating conditions, this report recommends (identifies) improvement measures that change the intersection geometry to increase capacity. These capacity improvements involve roadway widening and/or re -striping to reconfigure (add lanes) to specific approaches of a key intersection. The identified improvements are expected to: ■ mitigate the impact of existing traffic, Project traffic and future non -project (ambient traffic growth and cumulative project) traffic and ■ improve Levels of Service to an acceptable range and/or to pre -project conditions. 11.1 Planned and/or Recommended Improvements 11.1.1 Existing Plus Project Traffic Conditions The results of the intersection capacity analyses presented previously in Table 8-1 shows that the proposed Project is expected to have a significant impact at one (1) of the twenty-five (25) key study intersections under Existing Plus Project traffic conditions. As such, the following intersection improvements are recommended to mitigate the impacts of the proposed Project under these conditions. No. 13 — SR-55 SB Ramps at Fourth Street: Modify the eastbound shared through/right- turn lane to construct a free -right turn lane. Modify the existing traffic signal as necessary. This improvement is subject to the review and approval of the City of Santa Ana and Caltrans. Per City requirements, the Project may be expected to pay a fair-share/local fee to cover the Project's fair share of the full construction costs needed to implement these mitigation measures. 11.1.2 Year 2025 Cumulative Plus Project Traffic Conditions The results of the intersection capacity analyses presented previously in Table 8-2 shows that the proposed Project is expected to have a significant impact at two (2) of the twenty-five (25) key study intersections under Year 2025 Cumulative Plus Project traffic conditions. As such, the following intersection improvements are recommended to mitigate the impacts of the proposed Project under these conditions. No. 8 — I-5 NB Ramps at Fourth Street: Construct an additional westbound right -turn lane. Modify the existing traffic signal as necessary, inclusive any modifications to the traffic signal phasing. This improvement is consistent with the Traffic Impact Study for the Metro East Overlay Zone in the City of Santa Ana. This improvement is subject to the review and approval of the City of Santa Ana and Caltrans. The proposed Project is expected to pay the full construction cost needed to implement these mitigation measures, which are reflected in the Project site plan and is considered a "design feature". No. 13 — SR-55 SB Ramps at Fourth Street: Same as those identified in Section 11.1.1 — Modify the eastbound shared through/right-turn lane to construct a free -right turn lane. Modify the existing traffic signal as necessary. This improvement is subject to the review and