Section 158.31 - Duration of authority to impose a PFC after project implementationA public agency that has begun implementing an approved project may impose a PFC until-
(a) The charge expiration date is reached;(b) The total PFC revenue collected plus interest earned thereon equals the allowable cost of the approved project;(c) The authority to collect the PFC is terminated by the Administrator under subpart E of this part; or(d) The public agency is determined by the Administrator to be in violation of 49 U.S.C. 47524 and 47526 , and the authority to collect the PFC is terminated under that statute's implementing regulations under this title.Doc. No. 26385, 56 FR 24278, May 29, 1991, as amended by Amdt. 158-2, 65 FR 34542, May 30, 2000; Amdt. 158-4, 72 FR 28849, May 23, 2007