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Karla Kuhl July 19, 2006 <br /> PA-0600359(SA)(Pre-application) Page 4 . <br /> • Construction equipment may be used that meets the current off-road engine emission standard (as <br /> certified by the CARB), or be re-powered with an engine that meets this standard. Tier I, Tier II and Tier <br /> III engines have significantly less NOx and PM emissions compared to uncontrolled engines. To find <br /> engines certified by the CARB, see http://www.arb.ca.gov/mspron/offroad/cerVcert.php. This site lists <br /> engines by type, then manufacturer. The"Executive Order"shows what Tier the engine is certified as. <br /> Rule 9510 requires construction exhaust emissions to be reduced by 20 percent for NOx and 45 percent <br /> for PM10 when compared to the statewide fleet average or to pay an in lieu mitigation fee. For more <br /> information on heavy-duty engines, please contact Mr. Thomas Astone, Air Quality Specialist, at(559) <br /> 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 /> Sincerely, <br /> Chris J.tRegi <br /> Air Quaist <br /> Central <br /> C:file <br />