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Overriding Considerations The environmental, economic, legal, social, technological, and other benefits of the project outweigh and override these potentially significant adverse impacts as more fully described in the Statement of Overriding Considerations, set forth in Section 7.0 below. 4.2.2 Noise Summary of Potential Impacts An evaluation of the potential impacts resulting from potential noise-related impacts of the project by mobile and stationary sources during construction and operational is found in Section 4.4(Noise) of the Draft EIR. Noise would increase at the existing Union Pacific Intermodal Facility due to changes in operations associated with the project, primarily the increase in the number of lifts occurring per year. Operational noise changes can be subdivided into three main sub-categories: a. Yard operations such as cranes lifting containers,etc. b. Increases in the number of trucks entering and leaving the facility, which in turn would result in more trucks driving along the main access roads such as Roth Road to the west and Airport Way/French Camp Road to the east c. Increases in the in the number of trains,which could increase the number of horn and wheel/rail noise and vibration events at sensitive receivers adjacent to the tracks. Project-related noise exposure increases from yard operations would be expected to match or exceed the applicable+3 dB significance threshold and/or cause the 45 dBA Leqlhr nighttime significance criterion to be exceeded in all future conditions at Residential Receptor DWI, southeast of the facility, and at Residential Receptor R-3,southwest of the facility as more fully discussed in the Draft FIR. Findings The County finds that, pursuant to Section 15091(a)(3) of the CEQA Guidelines, specific economic, legal, social, technological, or other considerations make infeasible the mitigation measures identified in the Final EIR. Facts in Support of Findings Mitigation Measure NOISE-1a will reduce truck rebound impact noise by removing speed bumps and by posting large, clearly visible signs requiring drivers to observe maximum allowable speeds. In addition, the application will be required to install radar-operated or induction-loop operated large electronic speed indicator signs with rapidly flashing alerts in case of speed violations to clearly signal drivers their a, ent speed. In addition,the applicant will be required to maintain project site roads so as to reduce truck vibration due to surface roughness, expansion joint gaps, cracks and holes that would otherwise generate impact noise. Mitigation Measure NOISE-Ib will reduce container landing impact noise by requiring crane operators to tightly control descent speeds in the last few seconds before impact, including through software controls. Mitigation Measure NOISE-lc will require the applicant to test the feasibility of utilizing electric hybrid cranes as an alternative to diesel powered gantry cranes and to incorporate such hybrid cranes into the project's operations if the applicant determines they are operationally and economically feasible. Mitigation Measure Nkw NOISE-1 d will require that the applicant replace the current single-tone backup alarms used in gantry cranes Findings of Fact/ 28 November 2012 Statement of Overriding Considerations