<div class="chunk-title">Sec. 8-21. - Nonconforming uses.</div>
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            <p class="incr0">
               (a)
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            <p class="content1">
               <span class="ital">Regulation not retroactive.</span> The regulations prescribed by this article shall not be construed to require the
               removal, lowering, or other changes or alteration of any structure or tree not conforming
               to the regulations as of the effective date of the ordinance from which this article
               is derived, or otherwise interfere with the continuance of a nonconforming use. Nothing
               contained herein shall require any change in the construction, alteration, or intended
               use of any structure, the construction or alteration of which was begun prior to the
               effective date of the ordinance from which this article is derived, and is diligently
               prosecuted.
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            <p class="incr0">
               (b)
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            <p class="content1">
               <span class="ital">Marking and lighting.</span> Notwithstanding the preceding provision of this section, the owner of any existing
               nonconforming structure or tree is hereby required to permit the installation, operation,
               and maintenance thereon of such markers and lights as shall be deemed necessary by
               the airport commission, to indicate to the operators of aircraft in the vicinity of
               the airport, the presence of such airport hazards. Such markers and lights shall be
               installed, operated, and maintained at the expense of the airport commission if the
               requirement is in the vicinity of the airport.
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            <p class="historynote0">
               (Ord. of 5-21-2001, art. I, Â§Â§ 5.1, 5.2)
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