The village council shall, upon this article becoming effective, and upon request
of any interested public utility, issue an annual permit, and shall annually thereafter
renew such permit, granting permission to such public utility to chemically control
and trim and keep trimmed all trees and shrubs intruding into the air spaces over,
or growing within the area of the streets, alleys, parks, rights-of-way and public
places of the village in such a manner as shall keep the overhead lines and equipment
and the public health and safety. Such chemical control and trimming shall be done
in accordance with approved practices and under the general direction of the superintendent
of public works. Such permit, as provided for in this section, shall require reasonable
prior notice to the village before any work is commenced under such permit; provided,
however, that in the event of an emergency requiring immediate maintenance work on
the overhead lines of such public utility, prior notice of commencing work under such
permit shall not be required. The term "emergency," as used in this section, shall
be defined to mean the occurrence or happening of any event which could not be expected
or prevented by the exercise of reasonable care and foresight and which endangers
or may endanger the overhead lines of the public utilities and the public health and
safety.