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Figure 2: 2024 RTP/SCS Project Level Mitigation Measures 2 TABLE A-1 Mitigation Monitoring and Reporting Program Matrix ow Air Quality SMM AQ-1: SLAG shall continue to support and provide information on regional air quality planning and related issue Ongoing overthe SLAG areas in the region.SLAG staff shall also continue to work with the U.S.Environmental Protection Agency, life of the plan California Air Resources Board,and the air districts within the SLAG region and provide updates to relevant stakeholders on regional air quality planning and related issue areas through regional collaboration forums such as SCAG'sTransportation Conformity Working Group. PMM AQ-1: In accordance with provisions of sections 15091(a)(2)and 15126,4(a)(1)(5)of the State CEQA Guidelines,a lead Ongoing overthe Lead Agency agency for a project can and should consider mitigation measures to reduce significant adverse effects related life of the plan to violating air quality standards..Such measures may include the following or other comparable measures identified by the lead agency: a) Minimize land disturbance. b) Suspend grading and earth moving when wind gusts exceed 25 miles per hour unless the soil is wet enough to prevent dust plumes. Q Cover trucks when hauling dirt d) Stabilize the surface of dirt piles if not removed immediately. e) Limit vehicular paths on unpaved surfaces and stabilize any temporary roads. f) Minimizeunnecessary vehicular and machineryactivities. g) Sweep paved streets at least once per day where there is evidence of dirt that has been carried on to the roadway. h) Revegetate disturbed land,including vehicular paths created during construction to avoid future off-road vehicular activities. J On Ca trans projects,Caltrans Standard Specifications 10-Dust Control,17-Watering,and 18-Dust Palliative shall be incorporated into project specifications. j) Assemble a comprehensive inventory fist(i.e,make,model,engine year,horsepower,emission rates)of all heavy-duty off-road(portable and mobile)equipment(50 horsepower[hp]and greater)that could be used an aggregate of 40 or more hours for the construction project.Prepare a plan for approval by the applicable air district demonstrating achievement of the applicable percent reduction for a CARE-approved fleet k) Ensure that all construction equipment is properly tuned and maintained. q Minimize idling time to 5 minutes—saves fuel and reduces emissions. m) Provide an operational water truck on-site at all times.Use watering trucks to minimize dust:watering should be sufficient to confine dust plumes to the project work areas.Sweep paved streets at least once per day where there is evidence of dirt that has been carried on to the roadway. n) Utilize existing power sources(e.g.r power poles)or clean fuel generators rather than temporary power generators. o) Develop a traffic plan to minimize traffic flow interference from construction activities.The plan may include advance public notice of routing,use of public transportation,and satellite parking areas with a shuttle service.Schedule operations affecting traffic for off-peak hours.Minimize obstruction of through- traffic lanes.Provide a flag person to guide traffic property and ensure safety at construction sites. p) Obtain CARB Portable Equipment Registration with the state or a local district permit for portable engines and portable engine-driven equipment units used at the project work site,with the exception of on-road and off-road motor vehicles.Arrange appropriate consultations with GARB or the local air district to determine registration and permitting requirements priorto equipment operation at the site. q) Use Titer 4 Final equipment or better for all engines above 50 hp.In the event that construction equipment cannot meet to Tier4 Final or better engine certification,the Project representative or contractor must demonstrate through future study with written findings supported by substantial evidence that is approved by the project's lead agency before using other tech nolog ies/strategies..Alternative applicable strategies may include,but would not be limited to,construction equipment with Tier 4 Interim or reduction in the number and/or horsepower rating of construction equipment and/or limiting the number of construction equipment operating at the same time.All equipment must be tuned and maintained in compliance with the manufacturer's recommended maintenance schedule and specifications.All maintenance records for each equipment and their contractor(s)should make available for inspection and remain on-site for a period of at least two years from completion of construction,unless the individual project can demonstrate thatTier4 Final or better engines would not be required to mitigate emissions below significance thresholds.Project sponsors should also consider including,ERNE technologies where appropriate and feasible or higher tier standard diesel equipment as A becomes developed and feasible. r) Projects located within the South Coast Air Basin and the Coachella Valley should consider applying for South Coast AQMD"SOON"funds which provides funds to applicable Fleets for the purchase of commercially available low-emission heavy-duty engines to achieve near-teen reduction of NOx emissions from in-use off-road diesel vehicles. s) Projects located within AB 617 communities should review the applicable Community Emissions Reduction Plan(CERP)for identification of additional feasible mitigation that can be applied to individual projects. 2 SCAG(Apr. 2024) MMRP for the 2024 RTP/SCS Program EIR, pp.A-3,A-7—A-13 (air quality),A-26—A-30(GHG),A-42—A-43 (Transportation),A-44—A-46 (utilities service systems), https:Hscag.ca.gov/sites/default/files/2024- 05/exh i b it_a_m m rp_508_fi n a I.pdf.