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City of Santa Ana -Park View at Town and Country Manor <br />Draft EIR <br />Table 4.2.8 (cont.): Localized Significance Analysis <br />ctivity <br />Onsite Emissions (pounds per day) <br />NO, <br />CO <br />PMto <br />PM2.6 <br />LST for receptors adjacent to the project <br />183 <br />1,323 <br />13 <br />7 <br />Exceed LST? <br />Yes <br />No <br />Yes <br />Yes <br />LST - 50 meters from the project <br />167 <br />1,830 <br />39 <br />9 <br />Exceed LST? <br />Yes <br />No <br />No <br />Yes <br />LST = localized significance threshold <br />The maximum daily emissions represent the maximum emissions that would occur in one day. <br />Source: Michael Brandman Associates, Air Quality Analysis Report, 2009. <br />Level of Significance Before Mitigation <br />Potentially significant. <br />Mitigation Measures <br />Mitigation measures AQ -1 and AQ -3 are required. <br />AQ -3 To reduce emissions of fugitive dust, the project shall do the following to the <br />satisfaction of the City of Santa Ana. <br />a) Install wheel washers where vehicles enter and exit the construction site onto <br />paved roads or wash off trucks and any equipment leaving the site each trip. <br />b) Water disturbed surface areas a minimum of three times per day. If the soil <br />has a moisture content greater than 12 percent, as determined by ASTM <br />method D -2216, then follow requirements in South Coast Air Quality <br />Management District Rule 403. <br />c) Grading and excavation shall be limited to a maximum of five acres <br />disturbed per day. <br />d) A maximum of 200 cubic yards per day of soil can be excavated /moved <br />-OR- while grading /excavation activities are occurring, Town and Country <br />residents would remain outside a boundary of 40 meters (130 feet) or inside <br />the buildings with all windows closed. <br />e) During active demolition and debris removal, water shall be applied every <br />four hours to the area within 100 feet of a structure being demolished, to <br />reduce vehicle trackout. <br />I) During demolition activities, water shall be applied to disturbed soils after <br />demolition is completed or at the end of each day of cleanup. <br />g) Demolition activities shall be prohibited when wind speeds exceed 25 miles <br />per hour. <br />Michael Brandman Associates 4.2 -19 <br />H\Cl t(PN- JMb32]b32]003MMVB2]0030 Se 4GAvQ ity.DOc <br />