(a) The interim executive committee is composed as provided by Section 463.251 for an executive committee except that the interim executive committee must include an additional member who is a member of the board of directors of a commuter rail district described by Chapter 174.
(b) The interim executive committee, after its organization, shall develop a service plan.
(c) Service on the interim executive committee by a public officer or employee is an additional duty of the office or employment.