For zoning lots with multiple rear lot lines
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In all districts, as indicated, for zoning lots with multiple rear lot lines, if a rear yard extends from a rear lot line away from the street line which is used to determine such rear lot line, the following rules shall apply:
(a) A rear yard with a minimum depth of 20 feet shall be provided where such rear lot line coincides with a rear lot line of an adjoining zoning lot.
(b) No rear yard shall be required where such rear lot line coincides with a side lot line of an adjoining zoning lot.
(c) For portions of through lots that have multiple rear lot lines and such portions are not subject to interior lot regulations, the street line bounding the zoning lot closest to such rear lot line shall be used to determine compliance with this Section.