6 - GPA19-01; AA19-01_651 W SUNFLOWER AVENUE

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Legacy Sunflower Apartments Page 94 Mitigated Negative Declaration – March 14, 2019 The project traffic report studied eight (8) area intersections and four (4) roadway segments to determine if the project would impact the project area circulation system. The eight intersections and four roadway segments were studied for the following six (6) traffic conditions:  Existing (2018)  Existing plus Project  Year 2022 Cumulative traffic  Year 2022 Cumulative plus Project  Year 2040  Year 2040 plus Project The traffic report assumed an ambient traffic growth factor of 1.0% per year. Therefore, from the base year of 2018 to the project completion date of 2022 the growth factor is 4.0%. The traffic report took into account the traffic that would be generated by the development of other projects in the cities of Santa Ana and Costa Mesa that are close to the proposed project. The traffic report estimated the traffic that is generated by the 16 cumulative projects listed in Table 30 and added that traffic to the six traffic conditions listed above. The traffic report assumed a project completion date of 2022 as proposed by the project applicant. Therefore, a project completion date of 2022 is shown as the time the project would be completed. Year 2040 is included in the traffic report as requested by the Orange County Transportation Authority (OCTA) using their OCTAM4.0 traffic computer model. The traffic distribution pattern of the project is shown in Figure 19. The traffic distribution patterns are based on the following:  Location of site access points in relation to the surrounding street system;  The site’s proximity to major traffic carriers and regional access routes;  Physical characteristics of the circulation system such as lane channelization and presence of traffic signals that affect travel patterns;  Presence of traffic congestion in the surrounding vicinity, and  Ingress/egress availability at the site. The peak hour intersection capacity analysis for project traffic for the existing plus project, Year 2022 plus project and Year 2040 plus project are shown in Tables 27, 28 and 29, respectively. As shown, the project traffic would not impact any of the eight studied intersections with the exception of the Main Street at Sunflower Avenue intersection. The Main Street at Sunflower Avenue intersection would be impacted in the PM peak hour for years 2022 and 2040 both without and with the project. A mitigation measure is recommended below to reduce the potential traffic impact at this intersection for both the Year 2022 and Year 2040 conditions to meet City of Santa Ana transportation requirements. Mitigation Measure No. 11 Prior to the issuance of the first occupancy permit, the project developer shall modify the traffic signal at the intersection of Sunflower Avenue and Main Street to provide a southbound right-turn overlap phase. The traffic study prepared for the project complies with the traffic impact requires of the City of Santa Ana and is consistent with the current Congestion Management Program (CMP) for Orange County.41 The project would not impact any City of Santa Ana transportation requirements or the County CMP. 41 Traffic Impact Analysis Report, Legacy Sunflower Apartments, Santa Ana, California, Lincscott Law & Greenspan, January 24, 2019. 6-116