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• • Draft Supplemental Environmental Impact Report Page IV.B-20 • Forward Inc. Landfill 2018 Expansion Project Year 2035 Cumulative Intersection Impacts Study intersections LOS for the Cumulative 2035 traffic conditions were evaluated in the 2018 • Traffic Impact Assessment with and without the Project to identify project impact for the • cumulative conditions scenario. The 2035 traffic volume forecasts for the study intersections were obtained from the traffic reports prepared for the Mariposa Lakes Development and the Tidewater Crossing Development,with results derived from the San Joaquin County Regional Traffic Model prepared by The San Joaquin County Association of Governments. Table IV.B-12 shows study intersections LOS for cumulative conditions along with a • comparison with existing and short-term conditions LOS. Figure IV.B-7 shows the anticipated traffic volumes for the 2035 traffic condition with the Project. As indicated, eight study intersections are projected to operate at unacceptable conditions without any improvements. However, a large number of roadway and signalization improvements are required as • mitigation or otherwise included in the other approved projects. These are summarized in the • 2018 TIA. Implementation of these improvements would reduce the significantly impacted intersections to the following four: • SR 99 SB On-off Ramps& E. French Camp Rd., (AM and PM peak hours) • SR 99 Urban Interchange& Arch Rd. (AM and PM peak hours) • SR 99 SB On-off Ramps &Mariposa Rd. (AM and PM peak hours) • SR 99 NB On-off Ramps &Mariposa Rd. (PM peak hour) The proposed Project would add traffic to the unacceptable levels of service at these intersections. Although the project's contributions would be small, based on County policy • they would be considered cumulatively considerable. The intersections were evaluated for • mitigation potential, however there is not adequate land available at the required locations to further improve these intersections. Therefore the Project's cumulative contribution would be considered a significant unavoidable impact. In addition, the Project would generate a significant cumulative contribution to a significant impact at the following intersection. Arch Rd. &Austin Rd (AM and PM peak hours) As shown on Table IV.13-12, implementation of Mitigation Measure B.7,below, would reduce this impact to a less-than-significant level. • Newcastle Road Access As described under Impact B.1, an alternate access to the landfill at Newcastle Road was considered in the 2013 EIR. That EIR found that, under year 2035 cumulative conditions with the use of Newcastle Road for landfill access, the intersections of Austin Road/Forward • Driveway and Arch/Newcastle Road would operate at acceptable levels of service, but the Austin/Arch Roads, SR 99/Arch Road, and SR 99/Mariposa Road SB Ramp intersections