Neighborhood business districts, hereinafter designated C-N districts, are established to provide for the development of small convenience shopping and related facilities in areas which are predominantly residential, at locations where such facilities can be grouped without detriment and appropriately conditioned to promote and protect the intent of the district, and to protect them by excluding uses which would tend to reduce their effectiveness as a neighborhood service. (Ord. 94-42 § 1 (part): prior gen. code § 8-47.0)