Assigned to NREW FOR COMMITTEE
ARIZONA STATE SENATE
Fifty-Sixth Legislature, First Regular Session
FACT SHEET FOR H.B. 2439
vehicle emissions inspections; enactment date
Purpose
An emergency measure that extends the date, from July 1, 2023, to July 1, 2027, by which
the U.S. Environmental Protection Agency (EPA) must approve the proposed modifications to the
vehicle emissions testing program protocols (protocols).
Background
Arizona has two areas that are designated by the EPA as serious non-attainment areas
(EPA). Area A is the greater Phoenix area and Area B is the greater Tucson area (ADEQ).
Non-attainment areas must complete emissions tests on vehicles to ensure they meet health-based
standards (ADEQ). The federal Clean Air Act outlines the requirements of states to have State
Implementation Plans for Air Quality (SIPs) to fulfill the requirements of non-attainment areas
including, requiring emissions testing (EPA). The EPA must approve any changes to the SIP
including emissions testing in non-attainment areas (42 U.S.C. ยง 7511).
In 2021, the Legislature amended the requirements in the SIP for vehicles in Area A and
Area B within Arizona. The amended requirements change which vehicles receive which
emissions tests in either Area A or Area B and provides requirements solely for diesel powered
vehicles (Laws 2021, Ch. 27).
There is no anticipated fiscal impact to the state General Fund associated with this
legislation.
Provisions
1. Extends the date, from July 1, 2023, to July 1, 2027, by which the EPA must approve the
proposed modifications to the protocols as part of the SIP.
2. Extends the date, from September 1, 2023, to September 1, 2027, by which the Director of the
ADEQ must notify the Director of the Arizona Legislative Council if the condition was met.
3. Makes technical changes.
4. Becomes effective on signature of the Governor, if the emergency clause is enacted.
House Action
NREW 2/7/23 DP 10-0-0-0
3
rd
Read 2/21/23 59-0-1
Prepared by Senate Research
March 13, 2023
RA/SF/slp