Laserfiche WebLink
i <br /> Ms. Hayes v July 27, 2005 <br /> PA-0500396 Page 4 <br /> • Construction activity mitigation measures include: <br /> - Install sandbags or other erosion control measures to prevent silt runoff to public roadways from <br /> sites with a slope greater than one percent <br /> - Install wheel washers for all exiting trucks, or wash off all trucks and equipment leaving the site <br /> - Install wind breaks at windward side(s)of construction areas <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 /> • 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 httr)://www.arb.ca.gov/msprog/offroad/cerVicert.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.goy/msoroo/offroad/cert/cert.php. 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 /> Sincerely, <br /> Catherine Th6o <br /> Air Quality Student Intern <br /> Central Region <br /> �//�q <br /> Chrystal <br /> Air Quality Specialist <br /> Central Region <br /> Enclosures <br /> a file <br />