92 Ill. Adm. Code 530.610
Chemical Vegetation Control
Section 530
Section 530.610 Chemical
Vegetation Control
a) Spraying of live foliage with any type of brush-killing
chemicals in lieu of cutting will not be permitted on State highway
right-of-way.
b) Each permit application for chemical use for growth retardant
or prevention of reestablishment of brush will be considered individually.
Approval or disapproval will be based on the location and the proposed methods
and materials.
c) Permit applications for chemical control of vegetation shall
require certification that the work will be accomplished by personnel licensed
by the Department of Agriculture as Herbicide Applicators.