In C2 Districts, and C4 though C7 Districts, the Board of Standards and Appeals may permit light motor vehicle repair and maintenance shops listed under Use Group VI, provided that the following findings are made: 

1. such use will not impair the character or the future use or development of the surrounding area. In order to make such finding the Board shall consider the presence and concentration of existing light motor vehicle repair and maintenance shops within 500 feet of the proposed use and whether any increase in concentration would have impacts on the surrounding area;
2. such use will cause minimal interruption to, and will not be incompatible with, the continuity of surrounding retail frontages;
3. such use will not create or contribute to serious traffic congestion and will not unduly inhibit surface traffic and pedestrian flow;
4. any facilities used for repair or maintenance are located within a completely enclosed building; and
5. entrances and exits are so planned that, at maximum expected operation, vehicular movement into or from the use will cause a minimum of obstruction on streets or sidewalks.

The Board may prescribe additional appropriate conditions and safeguards to minimize adverse effects on the character of the surrounding area.