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7 ESA1.Approach and Scope of Work • Estimate cumulative(2025)traffic volumes at the study intersections for a scenario with and without buildout of the proposed project.The scenario without the proposed project will be derived by the use of traffic growth factors(obtained from the County,from the San Joaquin Council of Governments [SJCOG] travel demand model). It is assumed that the traffic growth factors will account for reasonably foreseeable development in the project area, including but not necessarily limited to, the Central Lathrop Specific Plan and the City of Manteca's Northwest Airport Way Master Plan(which included the CenterPoint site,adjacent to the UP Intermodal Facility). Future year intersections operational analyses will include 95th percentile queue estimates relative to left turn storage requirements based on the Highway Design Manual(6th Edition). Future year intersection analysis will be performed using SYNCHRO-7 software and basic freeway and ramp merge-diverge based on procedures described in the HCM 2000. All truck traffic will be converted toassert er carequivalents p g pnor to performing operational analyses. It is understood that the County is updating its General Plan, and it is assumed that the latest information available at the time of preparation of this EIR will be provided by County staff to ESA, • Calculate cumulative-condition levels of service for the study intersections, freeway mainline segments and ramp junction, and identify significant project impacts.The percentage of cumulative growth at study intersections that is attributable to the proposed project will be reported. + Obtain and summarize collision data for the most-recent three -year period of SWITRS data from the California Highway Patrol for Roth Road between I-5 and Airport Way. TASAS data will be used for state highway facilities(I=5 segments ramp intersections). • Analyze potential impacts associated with the project's proposed increase in truck and rail activity and the need to use the at-grade crossing of the Union Pacific main line on Roth Road. ESA will describe ° the existing and future with-project use of the UP main line and the current warning devices(gates,signs, signals, etc.)on the basis of information provided by the CPUC and field reconnaissance. ESA proposes to address potential impacts associated with construction of an ° overcrossing of the UP main line on Roth Road at a programmatic level (subject to availability of design details). • Perform a review of the project site access,circulation and parking proposed for the project.This review will evaluate the project access driveway. Sight distance will be evaluated from the driveway location with respect to safety concerns. Emergency vehicle access will also be evaluated. • Develop feasible mitigation measures to reduce, or eliminate, significant impacts associated with the proposed project. San Joaquin Counly—E!R for the Union Paci5c Modernization Protect 1-15