2019-040 - Mainplace Mall Transformation

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City of Santa Ana Addendum to the MainPlace Mall Transformation Proiect Fashion Square Commercial Center Final EIR increases the Intersection Capacity Utilization (ICU) by 0.01 or greater.5 For Caltrans- controlled intersections, an impact is considered to be significant if the project -related traffic causes a deficient LOS; or if the intersection is already deficient in the pre -project condition, the existing Measure of Effectiveness (MOE) is reduced. Existing Traffic Conditions In addition to the street improvements that were constructed pursuant to the 1983 EIR mitigation measures, additional vehicular capacity has been provided by other local street improvements and freeway facilities that have been completed in the vicinity of the Project site since the certification of the 1983 EIR. These include: • Widening of Owens Drive (now called Memory Lane) east of Main Street, and reconfiguration of the intersection of Memory Lane at Main Street; • Enhancements to the intersection of Main Street at MainPlace Access Drive; • Improvements to the intersection of Main Street at Main Place Drive/Town and Country Road; and • Improvements along La Veta Avenue from Bedford Drive to past Main Street, including at the intersection of Main Street at La Veta Avenue. The Traffic Impact Study prepared for the proposed Project considered the Project's potential impacts at 22 study intersections located within the City of Santa Ana, City of Orange, and Caltrans jurisdictions. As shown in Table T-1 and Figure 12, Existing Traffic Volumes, all study intersections are currently operating at an acceptable LOS— as established by the City of Santa Ana General Plan —with the exception of Intersection #7, Town and Country Road at SR-22 Eastbound Ramps, in the p.m. peak hour. The Traffic Impact Study also considered the Project's potential impacts on 15 roadway segments located within the City of Santa Ana and the City of Orange. As shown in Table T-2, each of the study area roadway segments is currently operating at an acceptable LOS, as established by the City General Plan. 5 The Cities of Santa Ana and Orange use the Intersection Capacity Utilization (ICU) capacity methodology for signalized intersections. The ICU methodology provides a comparison of the theoretical hourly vehicular capacity of an intersection to the number of vehicles actually passing through that intersection during a given hour. The results of the evaluation are reported in terms of LOS. 71