Item 32 - EIR No. 2020-03 and GPA No.2020-06 Santa Ana General Plan Update

Home Browse Search

unnecessary engine idling. All other equipment shall be turned off if not in use for more than 5 minutes. • During the entire active construction period and to the extent feasible, the use of noise-producing signals, including horns, whistles, alarms, and bells, shall be for safety warning purposes only. The construction manager shall use smart back-up alarms, which automatically adjust the alarm level based on the background noise level or switch off back-up alarms and replace with human spotters in compliance with all safety requirements and laws. • Erect temporary noise barriers (at least as high as the exhaust of equipment and breaking line-of-sight between noise sources and sensitive receptors), as necessary and feasible, to maintain construction noise levels at or below the performance standard of 80 dBA Leq. Barriers shall be constructed with a solid material that has a density of at least 4 pounds per square foot with no gaps from the ground to the top of the barrier. Finding Finding 3. Changes or alterations have been required in, or incorporated into, the GPU that avoid or substantially lessen the significant environmental effect as identified in the PEIR. These changes are identified in the form of the mitigation measure above. The City of Santa Ana hereby finds that implementation of the mitigation measure is feasible, and the measure is therefore adopted. The City finds that there are no other mitigation measures that are feasible, taking into consideration specific economic, legal, social, technological or other factors, that would mitigate this impact to a less-than-significant level, and further, that specific economic, legal, social, technological, or other considerations, including considerations for the provision of employment opportunities for highly trained workers, make infeasible the alternatives identified in the PEIR, as discussed in Section G of these Findings (Public Resources Code§§21081(a)(1), (3); Guidelines §§ 15091(a)(1), (3)). As described in the Statement of Overriding Considerations, the City has determined that this impact is acceptable because specific overriding economic, legal, social, technological, or other benefits, including regionwide or statewide environmental benefits, of the GPU outweigh its significant effects on the environment. Impact 5.12-2: Buildout of the plan area would cause a substantial traffic noise increase on local roadways and could locate sensitive receptors in areas that exceed established noise standards. Support for this environmental impact conclusion is fully discussed in Section 5.12, Noise, starting on page 5.12-30 of the Updated Draft PEIR. Mitigation Measure N-2 would reduce potential interior noise impacts to future noise-sensitive receptors below the thresholds. However, there are no feasible or practical mitigation measures available to reduce project-generated traffic noise to less than significant levels for existing Santa Ana General Plan Update CE 5T ac an Statement 32 — 73 2 Of ri ing onsiderations -50- 61 /Rer�0 2 1