Minimum rear yard:
A. Main buildings: Fifteen feet (15') except that when the rear lot line abuts on an easement the distance may be reduced to ten feet (10').
B. Accessory buildings: Four feet (4') except that when the rear lot line abuts on an easement the accessory buildings may abut upon but not intrude in the easement. (Ord. 02-69-70, 4-30-1970)