Liquefied petroleum is a component of propane, which is not classified as a gasoline. Ms. Ormond added that a fleet of school buses in Nevada have been converted and she did not know if they sought to have a waiver to work with A-55. If not, Ms. Ormond explained, they are out of compliance with Memorandum 1A and federal law. There is not enough information to say whether or not A-55 pollutes more than, less than, or equal to regular diesel fuel. Arizona has made the most progress in decreasing levels of carbon monoxide.
Ozone continues to be the most difficult pollutant to decrease.
Carbon monoxide is worst in wintertime, ozone is worst in summertime, and particulates are a problem year round. Chairman Allen noted that Dick Foreman, Manager, Public Affairs, Southwest Gas, opposed H.B. 2569. Vice Chairman Gardner moved that H.B. 2569 do pass. Ms. Wrona expressed support for H.B. 2326 and added that the statewide testing would create a considerable cost for the State of Arizona. Vehicles registered outside of Area A and are used to commute into Area A are subject to emissions testing but it has been difficult to enforce.