Resources Resources such as documents, research, data, and other tools related to the activities of the California Air Resources Board are available from this page. Use the following general categories or the search tool below. Resource DirectoriesExecutive OrdersPermits, Certifications, Verifications, and RegistrationsFormsDatabase ApplicationsResearchA-Z indexVapor Recovery Keywords Airborne ToxicsAir PollutionBusiness AssistanceCars & TrucksCommunities(-)EnforcementFreight & Goods MovementHealthIndoor Air Quality & ExposureMeasuring Air QualityPower EquipmentResearchSimple Solutions to Improve Air QualityTruck & BusCalifornia Racing VehiclesCargo Tank Vapor RecoveryDiesel EnforcementDiesel VehiclesEmergency Backup GeneratorsEnforcement Policy & ReportsEquipment and Process Precertification Program (Stationary Sources Only)(-)New Source Review Permitting ProgramsPortable Equipment Registration Program (PERP)Protect California Air Act of 2003 - Senate Bill 288Public Safety Power Shutoff (PSPS) EventsSupplemental Environmental Projects (SEPs)Truck and Bus Regulation Truck Loan Assistance ProgramInformation 1 results found for InformationU.S. EPA’s Relaxation of Federal Air Permitting FeaturedTruckStop Diesel Truck InformationDriveClean Buying guide for clean and efficient vehiclesBreathe Well Air quality in your neighborhood