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City of Santa Ana <br />California Environmental Quality Act <br />Mitigation Monitoring and Reporting Plan <br />Santa Ana Zoo Stormwater Capture and Diversion MND <br />Mitigation Monitoring and Reporting <br />Implementation <br />Implementation <br />Monitored <br />Outside <br />Mitigation Measure <br />Party <br />Phase <br />By <br />Agency <br />Coordination <br />■ Break line of sight from noise source to <br />receiver <br />■ Use a frame to secure an appropriate <br />acoustic blanket or paneling <br />• Use a solid material with a minimum <br />surface density of 3 Ib/ft2 or mass -loaded <br />acoustic blankets with at least STC 25 <br />■ Overlap or seal any gaps in the barriers <br />➢ Designate haul routes to be used based on the <br />least overall noise impact route, with heavily - <br />loaded trucks away from residential streets, if <br />possible. Identify haul routes streets with the <br />fewest noise sensitive receivers if no <br />alternatives are available. <br />➢ Place earth -moving equipment, fixed noise - <br />generating equipment, stockpiles, staging <br />areas, and other noise -producing operations as <br />far as practicable from noise -sensitive <br />receivers. <br />➢ Eliminate the use of horns, whistles, alarms, <br />and bells. <br />➢ Phase demolition, earth moving, and ground <br />impacting operations so they do not occur in <br />the same time period. <br />