6 U.S. Code § 1165 - Fire and life safety improvements
Out of funds appropriated pursuant to section 1153 of this title, there shall be made available to the Secretary of Transportation for fiscal year 2008, $3,000,000 for the preliminary design of options for a new tunnel on a different alignment to augment the capacity of the existing Baltimore tunnels.
Amounts appropriated pursuant to this section shall remain available until expended.
The Secretary of Transportation shall complete the review of a plan required under subsection (d) and approve or disapprove the plan within 45 days after the date on which each such plan is submitted by Amtrak.
If the Secretary of Transportation determines that a plan is incomplete or deficient, the Secretary of Transportation shall notify Amtrak of the incomplete items or deficiencies and Amtrak shall, within 30 days after receiving the Secretary of Transportation’s notification, submit a modified plan for the Secretary of Transportation’s review.