Multifamily Residential Districts provide areas for attached residential dwellings of low density (10 units per acre) and of moderate density (15, 20, and 30 dwellings per acre). The R-20 and R-30 Districts are intended to be convenient to centers of employment and have primary access to arterial streets. The R-10 and R-15 Districts are more restrictive and may be utilized as a buffer between Suburban Residential Districts and moderate density residential or commercial districts. (Ord. 4654, 6-6-94, § 9; Ord. 4270, 7-8-91, § 4; Ord. 3145, 9-27-82, § 10)