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1 Draft Supplemental Environmental Impact Report Page IV.H-8 Forward Inc. Landfill 2018 Expansion Project • Tidewater Crossing,located west of Highway 99 and north of French Camp Road, an 878-acre residential development with 2,365 dwelling units. This project has not yet been constructed so is part of the cumulative development scenario. The Mariposa Lakes project, a 3,810-acre residential project with 10,514 dwelling units, ' located southeast of Stockton city limits,was approved by the City of Stockton,but the project site has not been annexed to the City. It is considered unlikely that this project would be constructed before the anticipated closure date of the proposed Forward Landfill expansion project.' Therefore,this project is not included in the previously approved projects evaluated in this EIR. It is,however,included in the 2035 cumulative development scenario. ' The cumulative effects of the project together with other existing,approved, and likely development have been considered and discussed in detail in each of the various analyses of Chapter IV. In summary,the following significant and unavoidable cumulative impacts were identified: • Eight study intersections are projected to operate at unacceptable conditions in ' the 2035 condition 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: o SR 99 SB On-off Ramps&E. French Camp Rd., (AM and PM peak hours) r o SR 99 Urban Interchange&Arch Rd. (AM and PM peak hours) o SR 99 SB On-off Ramps &Mariposa Rd. (AM and PM peak hours) o SR 99 NB On-off Ramps&Mariposa Rd. (PM peak hour) The project also would contribute to a cumulatively significant impact at the Arch Road and Austin Road intersection, however mitigation measures identified in this EIR would reduce that impact to a less-than-significant level. No mitigation measures are available that would reduce the impacts at these intersections to a less than significant level. In the worst case,the 2018 expansion project's contributions to cumulative impacts at these four intersections, as defined by County policy,would be considerable, and would be a significant unavoidable impact. • The cumulative noise analysis found that the near-term and 2036(based on 2035 ' traffic models)noise level increases attributed to increased traffic from other planned development and the increased project truck traffic would exceed the significance criteria at many of the roadway segments(see Table IV.0-4 columns 1 Mike McDowell,Planning Manager,Planning&Engineering Division,Community Development Department,City of Stockton,email to Pang Ho,PHA Transportation Consultants, 10 April 2018.