N.H. Rev. Stat. Ann. § 228:8-a

Any sum received from the Federal Emergency Management Agency or Federal Highway Administration's Emergency Relief Program or any other federal program providing emergency assistance to the department of transportation to reimburse costs incurred for emergency response, including but not limited to, equipment rental, snow plowing, sanding, salting, flood damage response, and personnel overtime during any emergency declared shall be collected by the appropriate agency and appropriated to the department of transportation.