In C3 Districts, the Board of Standards and Appeals may permit water-oriented outdoor amusement and recreation facilities listed under Use Group VIII, provided that the following findings are met:

1. such use will not impair the character or the future use or development of the surrounding area and will cause minimal interruption to the continuity of surrounding residential or retail frontages, as applicable;
2. such use and any accessory facilities affixed to the land is adequately separated from any lot line; and
3. that, along any rear lot line or side lot line adjoining a Residence District, the zoning lot is screened as the Board may prescribe, by either of the following methods:
   1. a strip at least four feet wide, densely planted with shrubs or trees at least four feet high at the time of planting and which are of a type which may be expected to form a year-round dense screen at least six feet high within three years; or
   2. a wall or barrier or uniformly painted fence of fire-resistant material at least six feet high, but not more than eight feet above finished grade. Such wall, barrier, or fence may be opaque or perforated, provided that not more than 50 percent of its face is open.

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