WM. PRESTON LANE, JR., GOVERNOR. 1001

matter of right except in those cases herein specifically pro-
vided for.

(2) (Variances. ) The legislative body of any political sub-
division may authorize and empower the Board of Appeals, as
provided in Section 16(e) (5) of this sub-title to grant vari-
ances from the zoning regulations adopted under this sub-title
in cases of practical difficulty or unnecessary hardship, sub-
ject to such rules, regulations, restrictions, guides and stand-
ards, as may be established by appropriate action of such
legislative body. Any person desiring to erect any structure,
or increase the height of any structure, or permit the growth
of any tree, or otherwise use his property, in violation of
airport zoning regulations adopted under this sub-title may
make application for a variance from the zoning regulations
in question.

(3) (Obstruction Marking and Lighting. ) In granting any
permit that does not have to be issued as a matter of right
under the provisions of this Section 16(d), or in granting a
variance under the provisions of this Section 16(d), the said
administrative agency or Board of Appeals, as the case may
be, may, if it deems such action advisable to effectuate the
purposes of this sub-title and reasonable in the circumstances,
so condition such permit or variance as to require the owner
of the structure or tree in question to permit the political
subdivision, at its own expense, to install, operate and main-
tain suitable obstruction markers and obstruction lights
thereon.

(e) (Procedure. )

(1) (Adoption of Zoning Regulations. ) The legislative body
of the political subdivision, or the joint board provided for in
Section 16(c) (3) of this sub-title, shall provide for the man-
ner in which the boundaries of airport zoning districts and
airport zoning regulations and restrictions shall be deter-
mined, established, adopted and enforced, and from time to
time amended, revised, supplemented or changed. No such
boundary, regulation or restriction shall become effective until
after a public hearing in relation thereto, at which parties in
interest and citizens shall have an opportunity to be heard.
At least fifteen (15) days' notice of the time and place of
such hearing shall be published in an official paper, or a paper
of general circulation, in the political subdivision or sub-
divisions in which the airport is or is to be located and, in
case of the change of any boundary or boundaries of any
zoning district, a similar notice shall be posted at such place
or places as the respective zoning authorities shall designate
within the district proposed to be changed.