HB 2955 sets seasonal fuel standards for gasoline sold in Maricopa County (Arizona's most populous county, exceeding 1.2 million residents) and other areas designated as "Area A." From March 31 to October 31, gasoline must meet ASTM D4814 standards with specific vapor pressure limits. From November 1 to March 31, gasoline must comply with California's Phase 2 reformulated gasoline standards and the same vapor pressure limits. The bill also establishes a 7-day review process for fuel suppliers to request temporary exemptions during ethanol or gasoline supply shortages, requiring proof of imminent shortages and state agency approval.
HB 2106 clarifies how Arizona counties can levy a transportation excise tax approved by voters. It sets a maximum tax rate (up to 20% of existing business tax rates) and specifies where collected revenue must go: counties with over 400,000 residents deposit funds into a regional transportation fund, while smaller counties can choose between that fund or a public transportation authority fund. The tax applies to business transactions, electricity, and natural gas use, and must fund transportation projects in the county. This bill modifies existing tax collection rules but does not create new taxes - only defines how existing voter-approved county taxes operate.