In Block 101, Lots 2, 3, 5, and 6 of the Brooklawn Redevelopment Area only, no fence, wall or similar structure shall exceed four feet in height from ground level in the front yard, and six feet in any other yard, except a swimming pool as provided by Borough ordinance. Fences, walls or similar structures that screen on-site trash receptacles shall not exceed 10 feet in height from ground level.