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Sexlinger Farmhouse and Orchard <br />Residential Development Project <br />CEQA Findings <br />Implementation of AES -2 will require consistency with lighting standards that will <br />ensure the project's light sources will be similar to those already existing in the <br />immediate vicinity of the project site, and therefore will reduce the potential impact to <br />less than significant. (EIR, p. 5 -6, 5 -2.) <br />H. AIR QUALITY <br />I. Impact: Would the Project conflict with or obstruct implementation of the applicable air <br />quality plan? <br />Finding: Less Than Significant, With Mitigation Incorporated. (EIR, p. 5 -10 through 5- <br />13.) <br />Analysis: The applicable air quality management plan is the South Coast Air Quality <br />Management District's ( "SCAQMD ") 2007 Air Quality Management Plan ( "AQMP "). <br />This Plan proposes attainment of federal PM2.5 standards. (EIR, p. 5 -7) Short-term, <br />unmitigated daily construction impacts will result in PM10 and PM2.5 emissions that <br />exceed the AQMP thresholds for particulate matter. Therefore, this impact is potentially <br />significant, However, with the implementation of the following mitigation measures, <br />particulate matter emissions will be reduced to less than significant: <br />AIR -1: In order to reduce particulate matter emissions during project construction, <br />nontoxic soil stabilizers or comparable dust suppressant shall be applied to all inactive <br />construction areas (previously graded areas inactive for five consecutive days or more). <br />Chemical soil stabilizers, if used, shall be applied according to manufacturer's <br />specifications. <br />AIR -2: In order to reduce particulate matter emissions during construction, exposed <br />surfaces shall be watered three times a day. <br />AIR -4: In order to reduce particulate matter emissions during construction, speeds on <br />unpaved roads will not exceed 15 miles per hour. <br />The incorporation of these measures will reduce PM2.5 emissions and bring the project <br />within the standards set by SCAQMD and the 2007 AQMP. This is because chemical <br />stabilizers will reduce dust pick up from inactive graded areas, spraying exposed dirt with <br />water will reduce fugitive dust emissions, and reducing the speed of trucks on unpaved <br />areas will reduce dust kick -up. In total, these measures are expected to reduce PM2.5 <br />emissions from 5.17 pounds per day to 1.55 pounds per day. (EIR, Table 5 -3, compared <br />to Table 5 -5.) As the PM2.5 threshold is 4 pounds per day, PM2.5 would be reduced to a <br />level of less than significant, with incorporation of the above mitigation measures. <br />Similarly, emissions of PM10 would be reduced from 21.08 pounds per day, to 3,74 <br />pounds per day. As the PM10 threshold is 6 pounds per day, PM10 would be reduced to <br />a level of less than significant with incorporation of the above mitigation measures, <br />(EIR, Table 5 -3, compared to Table 5 -5) Given that the project proposal analyzed in the <br />Draft FIR included development of 24 new single family residences, and the project as <br />approved will include development of only 22 new single family residences, it stands to <br />22 "Exhibit A" <br />