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Mo Hatef ' ` September 11,2006 <br /> PA-0500509(SU)&PA-0500844(ZR) Page 5 <br /> • Construction equipment may be used that meets the current off-road engine emission standard (as <br /> certified by the California Air Resources Board (CARE), or be re-powered with an engine that meets <br /> this standard. Tier I, Tier II and Tier III engines have significantly,less NOx and PM emissions <br /> compared to uncontrolled engines. To find engines certified by the CARB, see <br /> http://www.arb.ca.Qov/msi)rog/offroad/cerUcert�hp. This site lists engines by type, then manufacturer. <br /> The "Executive Order" shows what Tier the engine is certified as. Rule 9510 requires construction <br /> exhaust emissions to be reduced by 20 percent for NOx and 45 percent for PM10 when compared to <br /> the statewide fleet average or to pay an in lieu mitigation fee. For more information on heavy-duty <br /> engines, please contact Mr. Thomas Astone, Air Quality Specialist, at (559) 230-5800. <br /> District staff is available to meet with you and/or the applicant to further discuss the regulatory requirements <br /> that are associated with this project. If you have any questions or require further information, please call <br /> either myself, or Mr. Dave Mitchell, Planning Manager, at (559) 230-5800, and provide the reference number <br /> at the top of this letter. <br /> Sincere , <br /> Chris J. alashian <br /> Air Qualpecialist <br /> Central ion <br /> C:file <br />