43 USC 31g - Biennial report
Not later 3[1] years after December 9, 1999, and biennially thereafter, the Secretary shall submit to the Committee on Resources of the House of Representatives and the Committee on Energy and Natural Resources of the Senate a report that
(1) describes the status of the national geologic mapping program;
(2) describes and evaluates the progress achieved during the preceding 2 years in developing the national geologic map database; and
[1] So in original. Probably should be preceded by “than”.