The Environmental Improvement Board proposed to revise N.M. Code §§20.2.73 and 20.2.81, to conform those rules to federal requirements for regional haze. The plan establishes requirements for state rules to meet the requirements of 40 C.F.R. §51.309, including a determination of best available retrofit technology for nitrogen oxides. There will be a public hearing on June 1, 2011. http://www.nmcpr.state.nm.us/nmregister/xxii/xxii06/EIBnotice.htm.