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substantially lessen this impact, however, the changes would not reduce this impact to a less -than -significant level. Mitigation Measure 4.B-2 is incorporated into the proposed Zone. Facts in Support of Finding: The following facts and mitigation measure indicate that the impact will not be reduced to less than significant. 1. Operational activities related to the proposed Zone could result in emissions of pollutants that exceed significance thresholds established by the BAAQMD. 2. Implementation of Mitigation Measure 4.B-2 set forth in Table 6-1 of the Final SEIR and listed in the MIMRP will reduce the severity of Impact 4.B- 3; as discussed in the SEIR, even with implementation of Mitigation Measure 4.B-2, this impact would not be reduced to a less -than -significant level (i.e., whereby NOx and PM10 emissions levels from operation of uses under anticipated buildout of the area of the proposed Zone would be below the significance thresholds established by the BAAQMD). This mitigation measure is hereby incorporated by reference and described below. Mitigation Measure 4.B-2: All developers of sites within the EDZ area that are located within 1,000 feet of sensitive receptors including church, school, senior housing, or recreational uses (i.e., Valley Bible Church and Love & Care Preschool, Club Sport, or other recreational uses) shall ensure that construction contract specifications include a requirement that all off-road diesel -powered construction equipment used during the construction activities within the EDZ area be equipped with engines that meet or exceed either U.S. Environmental Protection Agency or California Air Resources Board Tier 2 off-road emission standards, and are fitted with Level 3 Verified Diesel Emissions Control (VDEC), which would reduce diesel particulate emissions by at least 85 percent; or ensure that off-road diesel - powered construction equipment engines meet interim or final Tier 4 emission standards. Site(s) affected: All sites within the proposed Zone. (Draft SEIR, pp. 4.D-21 to 4.D-23.) Impact 4.B-6 Operation of uses within the area of the proposed Zone, when combined with past, present and other reasonably foreseeable development in the vicinity of the proposed Zone, would result in cumulative criteria air pollutant air quality impacts. The SEIR evaluates the impacts on air quality that would result from construction and operation activities that would take place within the area of the proposed Zone. The assessment includes the potential for the proposed Zone to violate an air quality standard or contribute substantially to an existing or projected air quality violation, to result in a cumulatively considerable net increase of any criteria pollutant for which the region is in non -attainment, or to 40