Any bonds issued pursuant to this act [article], bearing the signatures of officers
in office on the date of the signing thereof shall be valid and binding obligations,
notwithstanding that before the delivery thereof and payment therefor any or all of
the persons whose signatures appear thereon, or on any coupons appertaining thereto,
shall have ceased to be officers of the county. The validity or regularity of any
proceedings relating to the construction, acquisition or improvement of such waste
collection and disposal system for which said bonds are issued, or the validity or
regularity of any proceedings relating to the establishment and collection of fees,
rentals or other charges for the use of the services and facilities of such waste
collection and disposal system, after the delivery of any of said bonds, shall be
conclusive and shall not thereafter be questioned in any proceedings in any court.
The resolution authorizing said bonds may provide that such bonds shall contain a
recital that they are issued pursuant to this act [article], which recital shall be
conclusive evidence of their validity and of the regularity of their issuance.
