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Ms. Kuhl _ August 4, 2005 <br /> PA-0500484 Page 3 <br /> • The applicant/tenant(s) should require that all diesel engines be shut off when not in use on the <br /> premises to reduce emissions from idling. <br /> • Construction activity mitigation measures include: <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 /> - 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 /> Sincere <br /> Chrystal Meier <br /> Air Quality Specialist <br /> Central Region <br /> CXT <br /> Enclosures <br /> c file <br />