In R1 or R2 Districts, the Board of Standards and Appeals may permit outdoor racket courts or outdoor skating rinks listed under Use Group I, provided that the Board finds that such use is so located as not to impair the character of the surrounding area or its future development as a neighborhood of single-family residences.

The Board shall prescribe the following conditions:

1. that such use and any accessory facilities affixed to the land are not located closer than 20 feet to any lot line; and
2. that all lighting is directed away from nearby zoning lots containing residences.

The Board may prescribe additional appropriate conditions and safeguards to minimize adverse effects on the character of the surrounding area, including requirements for screening or for landscaping.