The study of lead emissions from the consumption of aviation gasoline by piston-powered general aviation aircraft shall include an assessment of:
* Existing non-leaded fuel alternatives to the aviation gasoline used by piston-powered general aviation aircraft;
* Ambient lead concentrations at and around airports where piston-powered general aviation aircraft are used; and
* Mitigation measures to reduce ambient lead concentrations, including increasing the size of run-up areas, relocating run-up areas, imposing restrictions on aircraft using aviation gasoline, and increasing the use of motor gasoline in piston-powered general aviation aircraft.
As part of assessing mitigation measures, the committee will consider potential improvements in air quality near specific airports in relation to the maximum allowable lead concentration established for the National Ambient Air Quality Standards. The evaluation methods should be quantitative to the extent possible. The committee is not asked to recommend the adoption of one or more mitigation measures. As appropriate and based on available scientific and technical information, the committee will recommend near- and longer-term mitigation measures that warrant further consideration by federal agencies. In addition, it will identify priority research needs for reducing future lead emissions from piston engine aircraft.