; (C) for operational costs for actions taken to respond to a hazardous train event; (D) for any other purpose related to a hazardous train event, as determined by the Administrator; and (E) to retroactively cover a cost described in any of subparagraphs (A) through (D) that is incurred after the date of a hazardous train event or within 30 days of the receipt of amounts under this subsection. (2) Documentation of costs (A) In general Not later than 120 days after the date on which the Administrator declares a hazardous train event for which an eligible entity receives assistance under this subsection, the eligible entity shall submit documentation to the Administrator for each item for which such assistance is used through procurement or reimbursement. (B) Reimbursement If the Administrator determines that an eligible entity has used assistance received under this subsection in violation of this subsection, the eligible entity shall reimburse the Fund for the amount of such assistance. Reimbursements to the Fund shall be made eligible for future hazardous train events. . (b) Clerical amendment The analysis for chapter 209 of title 49, United States Code, is amended by adding at the end the following: 20904. Hazardous train events. . 3. Advance warning requirement The Secretary of Transportation, in consultation with the Administrator of the Transportation Security Administration, shall issue regulations requiring any railroad that transports hazardous materials by train through any community in the United States to provide county and local emergency response groups in such community, including police departments, fire departments, and emergency response agencies, with— (1) advance warning of such train’s load and timing