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Mr.Swanson December 16,2005 PA-0400776 Page 3 c i the replacement of older diesel engines with new, cleaner, fuel-efficient diesel engines. The program also provides incentives for the re-power of older, heavy-duty trucks with cleaner diesel engines or alternative fuel engines. New alternative fuel heavy-duty trucks.also qualify. For more information regarding this program contact the. District at (559} 230-5858 or visit our website at` http://wwwivalley6ir.org/transpbrt6tion/h&avVduty-idx.htm. Theapplicantltenant(s) should'.require,that all diesel engines be shutoff when hof rn;use on the premises to reduce emissions from:.idling The .applicant should` install equipment that:provides'°amenities that WouI oth' y g 9 "- I?,,,. , gy erwise .be powered b . idlin eri rhes An exam Le of. such technolo includes 1dleAire: . See :;. http:l/www:idieaire.com/ • Construction activity mitigation measures include.:` Instalt'sandbags or other. 'erosion control.rrieasures to prevent silt runoff.to public.roadways from sites with a slope greater than one percent - Limit area subject to excavation, grading; and other construction activity at any one time - Limit the hours.of operation of heavy duty equipment and/or the amount of equipment in use Replace fossil=fueled equipment with electrically driven equivalents (provided they are not run via a portable generator set) Apply idling;time limits or require that all diesel engines be shut off when not in use on the premises to reduce emissions from idling. Curtailconstruction during periods of high ambient pollutant concentrations; this may include ceasing of construction activity during the peak-hour of vehicular traffic on adjacent roadways, and."Spare the Air Days"declared by the District. Implement activity management(e.g.rescheduling activities to.reduce short-term impacts) During the smog season (May through October), lengthen the construction period to minimize the number of_vehicles and equipment operating at the same time. Off road trucks should be equipped with on-road engines when possible. - Minimize obstruction of traffic on adjacent.roadways. • The applicant should use diesel equipment fueled by alternative diesel fuel blends or Ultra Low Sulfur Diesel (ULSD). The California Air Resources Board (CARB) has verified specific alternative diesel fuel blends for NOx and PM emission reduction. Only fuels that.have been certified by CARB should be used. Information on biodiesel can be found on CARB's website at httr)://www.arb.ca.gov/fuels/diesel/altdiesel/altdiesel.htm and the EPA's website at http:llwww.epa.gov/oms/models/biodsl.htm. The applicant should also use CARB certified alternative fueled engines in construction equipment where practicable. Alternative fueled equipment may be powered by Compressed Natural Gas (CNG), Liquid Propane Gas (LPG), electric motors, or other CARB certified off-road technologies. To find engines certified by the CARB, see their certification website http://www.arb.ca.gov/msprog/offroad/cert/cert.php. `For more information on any of the technologies listed above, please contact Mr. Chris Acree, Senior Air Quality Specialist, at (559) 230-5829. • Construction,equipment should have engines that meet the current off-road engine emission standard (as certified by the CARB), or be re-powered with an engine that meets this standard. Tier I and Tier II engines have significantly less NOx and PM emissions compared to uncontrolled engines. To find engines certified by the CARB, see http:l/www.arb.ca.gov/mspro,/q offroad/cert/cert.php. This site lists engines by type, then manufacturer. The "Executive Order" shows what Tier the engine is certified as. For more information on heavy-duty engines, please contact Mr. Kevin McCaffrey, Air Quality Specialist, at(559)230-5831. District staff is available to meet with you and/or the applicant to further discuss the regulatory requirements that are associated with this project. If you have any questions or require further information, please call me at (559) 230-5818 or Mr. Hector R. Guerra, Senior Air Quality Planner, at (559) 230-5820 and provide the reference number at the top of this letter. Sincerely, Jessica R.Willis Air Quality Specialist Central Region c:file