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s <br /> Mr. Griffin <br /> PA-0500728(SA)(Pre-application) November 7, 2005 <br /> Page 4 <br /> • The applicant should require that all diesel engines be shut off when not in use on the premises to <br /> reduce emissions from idling. <br /> • Diesel equipment should use verified alternative diesel fuel blends, biodiesel, or Ultra Low Sulfur <br /> Diesel (ULSD). The California Air Resources Board (CARB).has verified specific alternative diesel <br /> fuel blends.for NOx and PM emission reduction. Only biodieselsthat have been certified by CARB <br /> should be used. For more information on biodiesel; please call Mr. Chris Acree, Senior Air Quality <br /> Specialist at (559) 230-5829. Information on;.biodiesel `can also be found .at'CARB's website- <br /> tttp:Nwww arb ca.goy/fuels/d�esef/altd�esellaltdre5el htm` <br /> and the EPA's website http'r//www'epa gov/omslmodels/biodsl.htm. <br /> • Enhanced.Construction activity mitigation.rr dasures Include: <br /> - Install sandbags or other erosion control'measures to prevent silt runoff to public roadways <br /> from sites with a slope greater,than one percent <br /> Limit area subject to excavation, grading, and other construction activity at any one time <br /> - -,L-imit the hours of operation of heavy duty equipment and/or the amount of equipment in use <br /> - Replace fossil-fueled equipment with electrically driven equivalents (provided they are not run <br /> via a portable generator set) <br /> - Curtail construction during periods of high ambient poll utant'concentratioris; this may <br /> include ceasing of construction activity during the peak-hour of vehicular traffic on <br /> adjacent roadways, and "Spare the Air Days" declared by the District. <br /> - Implement activity management (e.g. rescheduling activities to reduce short-term impacts) <br /> - During the smog season (May through October), lengthen the construction period to minimize <br /> the number of vehicles and equipment operating at the same time. <br /> - Off road trucks should be equipped with on-road engines when possible. <br /> - Minimize obstruction of traffic on adjacent roadways. <br /> District staff is available to meet with you and/or the applicant to further discuss the regulatory <br /> requirements that are associated with this project. If you have any questions or require further <br /> information, please call me at (559) 230-5800 or Mr. Hector R. Guerra, Senior Air Quality Planner, at <br /> (559) 230-5820 and provide the reference number at the top of this letter. <br /> Sincerely, <br /> eorgia A Stewart <br /> Air Quality Specialist <br /> Central Region <br /> C:file <br />