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1 <br /> Ms.Allen December 20, 2005 <br /> PA-0500801 {SA} Page 4' ' <br /> •, Light-Duty Cars..and.Trucks,should be alternative fueled or hybrids. <br /> • Constructior> activity mitigation measures include: <br /> Install sandbags.ar other erosion control rheasures 10 prevent slit runoff to'public roadways #rom <br /> sites with a slope greater than one percent - <br /> - imit area,;suJect to excavation, grading;"and other construction activity at any one time <br /> Limit the hours=o#operation of heavy"duty equipment`andlor-the amount of equipment in use <br /> Replace"fossil fdeled-equipment with electrically d'riven.equivalents (provided they.are not run via <br /> a ortable. `en.erator:set <br /> :p 9 ) <br /> - Apply idling time limits'or.require that all diesel engines shut off when not.in use:on-the <br /> pe6 mises,to reduce:emissions from idling. <br /> Gur#ail. .construction.during..periods of high ambient pollutant.concentrations this may include <br /> ceasing of construction activity.during the peak-ho'ur of vehicular traffic on adjacent roadways, <br /> 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 the <br /> 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 /> • The applicant should use diesel equipment fueled by alternative diesel fuel blends 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 fuels that have been certified by CARB should <br /> be used. Information on biodiesel can be found on CARB's website at <br /> httpJ/_www.arb.ca.geis/diesel/altdiesel/altdiesel.htm and the EPA's website at <br /> http:l/www.epa.govloins/models/biodsl.htm. The applicant should also use CARB certified alternative <br /> fueled engines in"construction'equipment where practicable. Alternative fueled equipment may be <br /> powered by Compressed Natural Gas (CNG), Liquid. Propane Gas (LPG), electric motors, or other <br /> CARB certified off-road technologies. To find engines certified by the CARB, see their certification <br /> website http:l/www.arb.ca.gov/msprog/offroad/cert/cert.php. For more information on any of the <br /> technologies listed above, please contact Mr. Chris Acree, Senior Air Quality Specialist, at(559)230- <br /> 5829. <br /> • Construction equipment should have engines that meet the current off-road engine emission standard <br /> (as certified by the CARB), or be re-powered with an engine that meets this standard. Tier I and Tier <br /> II engines have significantly less NOx and PM emissions compared to uncontrolled engines. To find <br /> engines certified by the CARB, see http:f/www.arb.ca.gov/msprog/offroad/cert/Gert_php. This site lists <br /> engines by type, then manufacturer. The "Executive Order" shows what Tier the engine is certified <br /> as. For more information on heavy-duty engines, please contact Mr. Kevin McCaffrey, Air Quality <br /> Specialist, at (559) 230-5831. <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)230-5820 and provide the reference number at the top of this letter. <br /> Since <br /> Hector R. G ra <br /> Senior Air ality Planner <br /> Central Region <br /> MRG:cxt <br /> Enclosure <br /> C:file <br />