Accessory retail sales shall be allowed for an approved commercial or industrial use, excluding uses within the M3 district. The area devoted to retail sales shall not occupy more than twenty five percent (25%) of the gross floor area of the approved use. Unless otherwise permitted in this title or as a condition of approval, no accessory retail sales shall be permitted in the rural base districts. (Ord. 389, 6-14-2000; amd. Ord. 426, 9-26-2001; amd. Ord. 902, 10-2-2019)