Office. Establishments that provide executive, management, administrative, or professional services, but not involving the sale of merchandise except as incidental to a permitted use. Typical examples include government, real estate, insurance, property management, investment, employment, travel, advertising, law, architecture, design, engineering, accounting, call centers, medical, dental, and similar offices. Accessory uses may include cafeterias, health facilities, game or activity areas, parking, or other amenities primarily for the use of employees in the firm or building.

Office, Flex. A use that combines office and storage for goods, wares, and merchandise, including distribution functions that may require off-street loading. This use also includes buildings that could be used for either office, industrial, makerspace, light craft production and sales, research and prototype production, or other light industrial or commercial uses.

Office Showroom. A land use that combines at least two of the following: office, display and showroom, retail and storage functions where the storage function of the use is accessory to the primary operation. This use does not include uses that are primarily warehousing or distribution in function or that require substantial off-street loading.

Official Zoning Map. See Section 146-1.5

Oil and Gas Facility. Equipment or improvements used or installed at an oil and gas location for the exploration, production, withdrawal, gathering, treatment, or processing of crude oil, condensate, E&P waste, or gas. Any well, wellhead, flowlines, tanks, surface equipment, or associated infrastructure used in the development, production, storage, or marketing of oil, natural gas, natural gas liquids, or other hydrocarbon resources.

Open Space. Land that is primarily unimproved, except for the inclusion of trails and limited passive recreation facilities or built features of cultural significance, and which is designated to be reserved for natural, environmental or historical reasons, such as to support natural systems, conserve habitat for plants and animals, preserve terrain features, retain scenic quality, interpret the past, teach an outdoor ethic, and provide the general population with quiet places away from development.

Original Aurora. The area whose outer boundaries are shown on the following map.

Ornamental Tree. Any self-supporting woody perennial plant that reaches a mature height of eight feet to 25 feet.

Other Motor Vehicle, Trailer, Boat, or Manufactured Home Sales or Rental. A business that displays on-site any recreational vehicle, boat, house trailer, modular structure, or Manufactured Home, or any motor vehicle other than an automobile or light truck, for the purpose of sales, rental, brokering or auction.

Outdoor Entertainment. Outdoor activities, excluding race tracks, which are primarily associated with the wholesaling and retailing of leisure outdoor experiences and products. The activities may include outdoor concerts, amusement parks, miniature golf, drive-in theaters, go-cart tracks, stadiums, and other similar outdoor facilities that may or may not provide limited bleacher-type seating for the convenience of users.

Outdoor Recreation or Sports. Outdoor activities, which most commonly include activities that occur outdoors in an urban and human-made environment as well as those activities traditionally associated with the natural environment. The activities may include outdoor education, play courts or playgrounds, fishing, golf courses, sports fields, and horseback riding or other similar outdoor activities.

Outdoor Seating or Dining. Service facilities or seating areas accessory to a restaurant or establishment serving items to be consumed on site. This definition shall not include sidewalk cafes in the public right-of-way.

Outdoor Storage. A lot or portion of a lot or parcel used to store and maintain construction equipment and other materials and facilities customarily required in the building trade by a construction contractor.

Overseas Container. A large metal or wooden container, typically intended for transport by large truck, train, or ship, that is used for the temporary storage and or transport of personal property. Also known as shipping containers.

Owner or Occupant. The person or entity that holds legal title to property, or the person or entity that occupies a property with the permission of the owner.

Ozonation Treatment of Biomedical Waste. The processing of biomedical waste using sterilization through ozone application, including any accessory collection and storage of wastes as part of such processing. Ozone application processes do not include those that solely rely on chlorination, biological, steam, heat, or radio wave sources. Biomedical waste includes pathogenic agents such as bacteria, viruses, fungus, proteinaceous infectious agents, and chemical components of medical and physiological materials, including: