; (bb) T. 18 S., R. 5 E.; and (cc) T. 19 S., R. 5 E., sec. 5. (ii) Fence (I) In general The Secretary of the Army shall continue to allow the Secretary to maintain the fence shown on the Map until such time as the Secretary determines that the fence is unnecessary for the management of the Park. (II) Removal If the Secretary determines that the fence is unnecessary for the management of the Park under subclause (I), the Secretary shall promptly remove the fence at the expense of the Department of the Interior. (D) Research The Secretary of the Army and the Secretary may enter into an agreement to allow the Secretary to conduct certain research in the area identified as Cooperative Use Research Area on the Map. (E) Military munitions and munitions debris (i) Response action With respect to any Federal liability, the Secretary of the Army shall remain responsible for any response action addressing military munitions or munitions debris on the land transferred under paragraph (1)(A) to the same extent as on the day before the date of enactment of this Act. (ii) Investigation of military munitions and munitions debris (I) In general The Secretary may request that the Secretary of the Army conduct 1 or more investigations of military munitions or munitions debris on any land transferred under paragraph (1)(A). (II) Access The Secretary shall give access to the Secretary of the Army to the land covered by a request under subclause (I) for the purposes of conducting the 1 or more investigations under that subclause. (III) Limitation An investigation conducted under this clause shall be subject to available appropriations. (iii) Applicable law Any activities undertaken under this subparagraph shall be carried out in accordance with— (I) the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 ( 42 U.S.C. 9601 et seq.); (II) the purposes for which the Park was established