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• Ms. Allen -- — August 3, 2005 <br /> PA-0500468(SA) Page 4 <br /> - Install wheel washers for all exiting trucks, or wash off all trucks and equipment leaving the site <br /> - Suspend excavation and grading activity when winds exceed 20 mph <br /> - Limit area subject to excavation, grading, and other construction activity at any one time <br /> - Limit 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 via <br /> a portable generator set) <br /> - Curtail construction during periods of high ambient pollutant concentrations; this may include <br /> ceasing of construction activity during the peak-hour 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 /> - Minimize obstruction of traffic on adjacent roadways. <br /> • The applicant should use California Air Resources Board (CARB) certified alternative fueled engines <br /> in construction equipment where practicable. Alternative fueled equipment may be powered by <br /> Compressed Natural Gas (CNG), Propane (LPG), electric motors, or other CARB certified off-road <br /> technologies. To find engines certified by the California Air Resources Board, see their certification <br /> website http://www.arb.ca-gov/msproq/offroad/cert/cert.php. For more information on alternative fuel <br /> engines, please call Mr. Chris Acree, Air Quality Specialist, at (559)230-5829. <br /> • Construction equipment should have engines that meet the current off-road engine emission standard <br /> (as certified by the California Air Resources Board), or be repowered with an engine that meets this <br /> standard. Tier I and Tier II engines have significantly less NOx and PM emissions compared to <br /> uncontrolled engines. To find engines certified by the California Air Resources Board, see <br /> http://www.arb.ca.gov/msprog/offroad/cert/cert.l)hp. This site lists engines by type, then <br /> manufacturer. The "Executive Order" shows what Tier the engine is certified as. For more <br /> information on heavy-duty engines, please contact Mr. Kevin McCaffrey, Air Quality Specialist, at <br /> (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) 230-5800 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 /> a <br /> Chrystal Meier <br /> Air Quality Specialist <br /> Central Region <br /> CXT <br /> Enclosure <br /> C, File <br />