Except as provided in Sec. 97.43 awards may be terminated in whole
or in part only as follows:
(a) By the awarding agency with the consent of the grantee or
subgrantee in which case the two parties shall agree upon the
termination conditions, including the effective date and in the case of
partial termination, the portion to be terminated, or
(b) By the grantee or subgrantee upon written notification to the
awarding agency, setting forth the reasons for such termination, the
effective date, and in the case of partial termination, the portion to
be terminated. However, if, in the case of a partial termination, the
awarding agency determines that the remaining portion of the award will
not accomplish the purposes for which the award was made, the awarding
agency may terminate the award in its entirety under either Sec. 97.43
or paragraph (a) of this section.