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City of Santa Ana California Environmental Quality Act <br />Mitigation Monitoring and Reporting Plan <br /> <br />- 2 - <br />Santa Ana Zoo Stormwater Capture and Diversion MND <br />Mitigation Monitoring and Reporting <br />Mitigation Measure Implementation <br />Party <br />Implementation <br />Phase <br />Monitored <br />By <br />Outside <br />Agency <br />Coordination <br />➢ Grading operations shall be suspended during <br />first stage ozone episodes or when winds <br />exceed 25 mph. A high wind response plan <br />shall be formulated for enhanced dust control if <br />winds are forecast to exceed 25 mph in any <br />upcoming 24-hour period. <br />➢ Any construction equipment using direct <br />internal combustion engines shall use a diesel <br />fuel with a maximum of 0.05 percent sulfur and <br />four-degree retard. <br />➢ Construction operations affecting roadways <br />within the Project area including detour routes, <br />shall be scheduled by implementing traffic <br />hours and shall minimize obstruction of through <br />traffic lanes. <br />➢ The engines of idling trucks or heavy <br />equipment shall be turned off if the expected <br />duration of idling exceeds five minutes. <br />➢ On-site heavy equipment used during grading <br />and construction shall be equipped with diesel <br />particulate filters unless it is demonstrated that <br />such equipment is not available, or its use is <br />not cost-competitive. <br />  <br />  <br />City Council 15 – 110 12/2/2025