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expose sensitive receptors to substantial pollutant concentrations, including odors. Air quality <br />effects related to the proposed Zone are evaluated against State and federal ambient air quality <br />standards, as well as the standards established by the BAAQMD. <br />Significance Before Mitigation: Significant <br />Significance After Mitigation: Significant and Unavoidable <br />Finding: Changes have been incorporated into the proposed Zone that would <br />substantially lessen this impact, however, the changes would not reduce this impact <br />to a less -than -significant level. Mitigation Measure 4.B-3 is incorporated into the <br />proposed Zone. <br />Facts in Support of Finding: The following facts and mitigation measure indicate <br />that the impact will not be reduced to less than significant. <br />1. Operational activities related to the proposed Zone could result in a <br />cumulatively considerable contribution to emissions of pollutants that <br />exceed limits set by the BAAQMD. <br />2. Implementation of Mitigation Measure 4.B-3 set forth in Table 6-1 of the <br />Final SEIR and listed in the MMRP will reduce the severity of Impact 4.B- <br />6; as discussed in the SEIR, even with implementation of Mitigation <br />Measure 4.B-3, this impact would not be reduced to a less -than -significant <br />level (i.e., whereby NOx and PM10 emissions levels from operation of <br />uses under anticipated buildout of the area of the proposed Zone would be <br />below the significance thresholds established by the BAAQMD). This <br />mitigation measure is hereby incorporated by reference and described <br />above under Impact 4.B-2. <br />Site(s) affected: All sites within the proposed Zone. <br />(Draft SEIR, pp. 4.D-24 to 4.D-25.) <br />2. Transportation and Traffic <br />As presented in the SEIR, the Zone would result in five impacts to transportation <br />and traffic that would be significant and unavoidable. Table 2 illustrates the impacts discussed <br />below and also identifies the following: <br />o The physical locations affected by each impact; <br />o To what extent mitigation measures would reduce the level of impact; <br />o Which impacts would remain significant and unavoidable after mitigation; <br />and <br />o Which impacts would be significant and unavoidable due to substantial <br />uncertainty regarding Caltrans' discretionary review of the improvements <br />contained in the measure. <br />41 <br />