liability. Franchise fees at the benefitting unit shall be credited to the sub-account of the originating unit over a period not to exceed the term of a single contract at the benefitting unit, in the amount of funds so expended to extinguish or reduce liability. For the costs of administration of the Land and Water Conservation Fund grants authorized by section 105(a)(2)(B) of the Gulf of Mexico Energy Security Act of 2006 ( Public Law 109–432 ), the National Park Service may retain up to 3 percent of the amounts which are authorized to be disbursed under such section, such retained amounts to remain available until expended. National Park Service funds may be transferred to the Federal Highway Administration (FHWA), Department of Transportation, for purposes authorized under section 204 of title 23, United States Code. Transfers may include a reasonable amount for FHWA administrative support costs. United states geological survey Surveys, investigations, and research For expenses necessary for the United States Geological Survey to perform surveys, investigations, and research covering topography, geology, hydrology, biology, and the mineral and water resources of the United States, its territories and possessions, and other areas as authorized by 43 U.S.C. 31 , 1332, and 1340