... ‘‘Proposed Finding for Commercial and Noncommercial Turbofan and Turbojet Aircraft Emissions,’’ memorandum from John Mueller, Assessment and Standards Division, Office of Transportation and Air Quality, ... Exemptions from Gas Turbine Aircraft Emission Standards,’’ memorandum from Glenn Passavant, Assessment and Standards Division, Office of Air Quality and Transportation, March 28, 2011. A copy of ... your comments on the information collection provisions to the Office of Information and Regulatory Affairs, Office of Management and Budget (OMB), Attn: Desk Officer for EPA, 725 17th Street,...