# § 10172a. Siting a second repository
**(a)** **Congressional action required** The Secretary may not conduct site-specific activities with respect to a second repository unless Congress has specifically authorized and appropriated funds for such activities.
**(b)** **Report** January 1, 2007January 1, 2010
The Secretary shall report to the President and to Congress on or after , but not later than , on the need for a second repository.
**(c)** **Termination of granite research** December 22, 1987December 22, 1987
Not later than 6 months after , the Secretary shall phase out in an orderly manner funding for all research programs in existence on , designed to evaluate the suitability of crystalline rock as a potential repository host medium.
**(d)** **Additional siting criteria** In the event that the Secretary at any time after December 22, 1987, considers any sites in crystalline rock for characterization or selection as a repository, the Secretary shall consider (as a supplement to the siting guidelines under section 10132 of this title) such potentially disqualifying factors as—
**(1)** seasonal increases in population;
**(2)** proximity to public drinking water supplies, including those of metropolitan areas; and
**(3)** the impact that characterization or siting decisions would have on lands owned or placed in trust by the United States for Indian tribes.
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**Source Credit**: (Pub. L. 97–425, title I, § 161, as added Pub. L. 100–202, § 101(d) [title III, § 300], Dec. 22, 1987, 101 Stat. 1329–104, 1329–121; Pub. L. 100–203, title V, § 5012, Dec. 22, 1987, 101 Stat. 1330–231.)
## Editorial Notes
### Codification
and added identical sections.