In the C6-4M District located within Subdistrict A-2, for buildings existing on January 19, 2005, the use regulations of the underlying district shall be modified as follows:

1. For buildings with 70,000 square feet or more of floor area, the conversion of non-residential floor area to residences, or to college or school student dormitories and fraternity or sorority student houses shall not be permitted.
2. The following uses shall be allowed:

From Use Group IX

All uses listed under Use Group IX(A) that are permitted in a C8 District

From Use Group X

All uses listed under Use Group X that are permitted in a C8 District.