Issuance of not to exceed $6,000,000 General Obligation Bonds in order to provide funds to pay the costs of:

a) The acquisition, construction, reconstruction, extension, improvement, and equipping of works and facilities useful for the collection, treatment, and disposal of sewage and industrial waste in a sanitary manner, and for the collection and disposal of surface waters and streams;

b) The equipping of the fire department;

c) The acquisition, construction, reconstruction, enlargement, improvement, and repair of bridges, culverts, retaining walls, viaducts, underpasses, grade crossing separations and approaches thereto;

d) The construction, reconstruction, and repair of sidewalks and pedestrian underpasses and overpasses;

e) The acquisition, restoration, or demolition of abandoned, dilapidated, or dangerous buildings, structures or properties or the abatement of a nuisance; and

f) The rehabilitation and improvement of parks already owned and facilities, equipment, and improvements commonly found in city parks.

for essential corporate purposes, and that notice of the proposal to issue the Bonds had been published as provided by Section 384.25 of the Code of Iowa