PUBLIC LAW 101-507 —NOV. 5, 1990 104 STAT. 1379 out regard to 31 U.S.C. 3302, such amount or portions thereof may be invested in securities of the United States Government and the interest earned thereon may be retained and used for the aforesaid purposes, except that these appropriated funds and interest earned thereon shall not be used to construct the new visitor center building nor for the payment, directly and indirectly, of principal or interest on any debt obligation incurred with respect to the new visitor center building, $497,900,000, to remain available until September 30, 1993: Provided, That, notwithstanding the limitation on the availability of funds appropriated under this heading by this appropriations Act, when any activity has been initiated by the incurrence of obligations therefor, the amount available for such activity shall remain available until expended, except that this provision shall not apply to the amounts appropriated pursuant to the authorization for repair, rehabilitation and modification of facilities, minor construction of new facilities and additions to existing facilities, and facility planning and design: Provided further. That no amount appropriated pursuant to this or any other Act may be used for the lease or construction of a new contractor-funded facility for exclusive use in support of a contract or contracts with the National Aeronautics and Space Administration under which the Administration would be required to substantially amortize through payment or reimbursement such contractor investment, unless an appropriations Act specifies the lease or contract pursuant to which such facilities are to be constructed or leased or such facility is otherwise identified in such Act: Provided further. That the Administrator may authorize such facility lease or construction, if he determines, in consultation with the Committees on Appropriations, that deferral of such action until the enactment of the next appropriations Act would be inconsistent with the interest of the Nation in aeronautical and space activities. RESEARCH AND PROGRAM MANAGEMENT For necessary expenses of research in Government laboratories, management of programs and other activities of the National Aeronautics and Space Administration, not otherwise provided for, including uniforms or allowances therefore, as authorized by law (5 U.S.C. 5901-5902); awards, lease, hire, maintenance and operation of administrative aircraft; purchase (not to exceed thirty-three for replacement only) and hire of passenger motor vehicles; and maintenance and repair of real and personal property, and not in excess of $200,000 per project for construction of new facilities and additions to existing facilities, repairs, and rehabilitation and modification of facilities; $2,211,900,000: Provided, That contracts may be entered into under this appropriation for maintenance and operation of facilities, and for other services, to be provided during the next fiscal year: Provided further. That not to exceed $35,000 of the foregoing amount shall be available for scientific consultations or extraordinary expense, to be expended upon the approval or authority of the Administrator and his determination shall be final and conclusive. OFFICE OF INSPECTOR GENERAL For necessary expenses of the Office of Inspector General in carrying out the provisions of the Inspector General Act of 1978, as amended, $10,500,000.