Conditional uses: colleges and universities, outdoor commercial recreation, hospitals, medical clinics, mortuaries, personal care-related uses, animal hospitals, animal kennels, pet daycare, pet grooming, automotive repair and painting, automobile sales and service, carwash, fuel and service stations, heavy manufacturing, bulk materials and heavy equipment sales and service, fleet vehicle-related uses, outdoor storage, sexually oriented businesses, drive-through facilities, and outdoor display of merchandise. Also conditional is any change in use where available on-site parking would be less than fifty percent of the total required parking. In multitenant buildings, required parking shall be the total required for all the tenants; for purposes of calculating total required parking, light manufacturing use shall be assumed where there is any vacancy in the building.