For the G-1 zone district only common ownership of land within the G-I zone district and the adjoining residential zone shall permit nonresidential development upon the adjoining residentially zoned land in accordance with standards established in subsection 16-17.6, Permitted Modifications, provided the common land ownership is:
1.
Contiguous and no public right-of-way or other public property separates the said G-I and residentially zoned properties.
2.
Accessible by an existing public industrial park street dedicated and accepted as of June 1, 1992.