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Frewert Traffic Impact Study Impact Findings The project impact to the intersections of Roth Road/S. Harlan Road (Intersection #1) and Roth Road/1-5 Southbound Ramps (Intersection 43) are significant because the project adds five or more seconds of delay to already failing intersection delay. Peak hour signal warrants were evaluated for the intersections based on the California Manual on Uniform Traffic Control Devices(CA MUTCD), Revision 4(2019) guidelines for traffic signal warrant 3, which evaluates traffic signal installation for peak hour traffic, At the intersection of Roth Road/S. Harlan Road (Intersection #1) the peak hour signal warrant is met under cumulative traffic conditions, during both peak hours, without and with the proposed project traffic.With mitigations,the impacts of the proposed project would be less than significant. At the intersection of Roth Road/1-5 Southbound Ramps (Intersection #3)the peak hour signal warrant is not met under cumulative traffic conditions, during either peak hour,without and with the proposed project traffic. However,the San Joaquin Regional Transportation Plan and Sustainable Communities Strategy(RTP/SCS), adopted June 2018, proposes improvements to the Roth Road interchange, including signalization and relocation of intersections along Roth Road. At the intersection of Roth Road/S. Harlan Road (Intersection #1),the addition of an exclusive westbound left-turn lane, and installation of signal control, improve intersection operations to acceptable LOS D or better during both peak hours.With mitigations,the impacts of the proposed project would be less than significant. However, as noted under background conditions,this project is in the City of Lathrop, who has plans to improve this intersection differently. In effect,the main intersection will be relocated about 600 feet to the east and signalized. The current intersection will essentially operate with turns to and from Harlan Road restricted to right turns only. For the purposes of this report,the Harlan Road intersection has been evaluated in its current location and traffic situation. At the intersection of Roth Road/1-5 Southbound Ramps(Intersection#3), the installation of all-way stop control improves intersection operations to acceptable LOS B during both peak hours.The CA MUTCD supports the installation of all-way stop control as an interim measure before installation of signal control. With mitigations,the impacts of the proposed project would be less than significant.The above- mentioned intersection signalizations are included in the list of planned improvements by the County's RTP/SCS and Congestion Management Program (CMP). Appendix H contains the peak hour signal warrant worksheets and detailed LOS analysis worksheets for Background plus Project Conditions Mitigations. Fair Share Analysis As noted above,the City of Lathrop has plans to relocate and improve the intersection of Roth Road/S. Harlan Road (Intersection #1), a project estimated to cost approximately$7.777 million.A traffic study of the Harlan Road realignment, part of overall Roth Road corridor improvements, was completed by DKS.At the direction of San Joaquin County staff, and based on discussions with City of Lathrop staff, a fair share analysis was conducted using Cumulative Conditions volumes from the DKS study.The results of the fair share analysis are shown in Table 12.The average fair share proportion of project trips is 2.4 percent, which is equivalent to approximately$186,648. Page J32 TJ KM