45 CFR § 605.5 - Assurances required.
(a) Assurances. Recipients of Federal financial assistance to which this part applies will assure NSF, in a manner specified by the Director, that the programs or activities will be operated in compliance with this part.
(b) Duration of obligation.
(1) In the case of Federal financial assistance extended in the form of real property or to provide real property or structures on the property, the assurance will obligate the recipient or, in the case of a subsequent transfer, the transferee, for the period during which the real property or structures are used for the purpose for which Federal financial assistance is extended or for another purpose involving the provision of similar services or benefits.
(2) In the case of Federal financial assistance extended to provide personal property, the assurance will obligate the recipient for the period during which it retains ownership or possession of the property.
(3) In all other cases the assurance will obligate the recipient for the period during which Federal financial assistance is extended.