49 U.S.C. § 47505
Airport noise compatibility planning grants
(a) General Authority.—
The Secretary of Transportation may make a grant to a sponsor of an airport to develop, for planning purposes, information necessary to prepare and submit—
(1)
a noise exposure map and related information under section 47503 of this title , including the cost of obtaining the information; or
(2)
a noise compatibility program under section 47504 of this title .
(b) Availability of Amounts and Government’s Share of Costs.—
A grant under subsection (a) of this section may be made from amounts available under section 48103 of this title . The United States Government’s share of the grant is the percent for which a project for airport development at an airport would be eligible under section 47109(a) and (b) of this title.
( Pub. L. 103–272, § 1(e) , July 5, 1994 , 108 Stat. 1286 .)