Acre or net acre -- any 43,560 contiguous square feet or total of portions thereof within the same parcel if dissected by existing roads or land dedicated for roads.

Fixture -- The assembly that holds the lamp (bulb) in a lighting system. It includes the elements designed to give light output control, such as a reflector (mirror) or refractor (lens), the ballast, housing, and the attachment parts.

Glare -- discomfort experienced by an observer with a direct line of sight to a light source which often results in visual impairment.

HID lighting -- high intensity discharge lighting, a family of bulb type including mercury vapor, metal halide, high pressure or low pressure sodium, which glow when an electric current is passed through a gas mixture inside the bulb.

Horizontal (or vertical) footcandles -- The amount of light striking a vertical or a horizontal plane.

Inventory of lighting -- a list of lamps indicating the bulb type, bulb wattage, and manufacturer through which the rated lumens can be determined.

Light source -- the bulb and lens, diffuser, or reflective enclosure.

Light trespass -- light projected onto a property from a fixture not located on that property.

Luminaire -- The complete lighting unit, including the lamp, the fixture, and other parts.

The maximum allowable total lumens generated on each parcel is 80,000 lumens per net acre with full-cutoff (fco) lighting. Parcels less than one net acre are allowed fco lumens in a portion equal to the parcel's portion of a net acre. Lights mounted on the underside of a roof 15 or more feet from any edge of the roof count 1/4 toward the limit. Lights on the underside of a roof less than 15 feet from the edge of the roof count 1/2 toward total lumens.

The maximum illumination at five feet inside an adjacent residential parcel or public right-of-way, or beyond, from light emitted from an artificial light source is .1 horizontal footcandles and .1 vertical footcandles. Said illumination at 10 feet inside an adjacent commercial or industrial parcel or on a public roadway, or beyond, shall not exceed .1 horizontal footcandles or .1 vertical footcandles. No line of sight to a bulb is permitted 5 feet or more beyond a residential or public right-of-way property line by an observer viewing from a position that is level with or higher than the ground below the fixture. Compliance is achieved with fixture shielding, directional control designed into the fixture, fixture location, fixture height, fixture aim, or a combination of these factors.

All illuminated signs must be lighted internally or lighted by top-mounted lights pointed downward. No sign may be illuminated with fixtures not shielded from upward transmission of light. The maximum size of the signs and minimum distances between signs should be established. Off-premise signs must be turned off after 10:30 p.m., and on-site signs turned off upon closing if after 10:30p.m. Signs should be white or light colored lettering on dark backgrounds. Lights that flash, pulse, rotate, move, or simulate motion are not permitted. Above includes billboards.

The use of search lights except by civil authorities for public safety is prohibited.

The nighttime use of white lighting or white strobe lighting is prohibited. (Nighttime white strobe lighting is not required by the FAA.) Applicants must show proof of any such FAA requirement.

The temporary use of low wattage or low voltage lighting for public festivals, celebrations, and the observance of holidays are exempt from regulation except where they create a hazard or nuisance from glare. Light trespass requirements remain in effect. Permits are required for commercial activities such as carnivals and are valid for up to 7 consecutive days. Where possible lighting should be fco.

Lighting at places of business or public venues, except for security, shall be turned off no later than one hour after closing. Such lights should be confined to that needed for basic security. The lights of vacant parking lots shall not remain lighted except for illuminating entryways by the fixtures closest to building entrances.

Airport lighting for navigational purposes is exempt. Continuous colored tube lighting (neon lighting) is exempt except for the requirement that lighting should not remain on after the business has closed or if installed on signage.

Lighting already installed when these regulations were adopted is exempt except:

It is unlawful to sell, lease, loan, or give any light fixture which would cause non-compliance. It is unlawful to install or cause to be installed any light fixture which would cause non-compliance. It is unlawful to operate any light fixture which would cause non-compliance. A permit for the repair, installation, or alteration of any HID light is required beforehand. An inventory of existing lights is required with the application for permit.

Nothing in these regulations shall prevent filing an action for relief from light trespass or glare as a nuisance, or from other relief under any laws which may currently exist. If other laws place added restrictions regarding lighting, they shall apply.

The provisions of this ordinance are severable, and if any provision of this ordinance or the application thereof is held invalid, the invalidity shall not affect other provisions or applications of this ordinance.

All material here is copyrighted by its authors as noted and can be used for non-commercial purposes to promote outdoor lighting education, providing proper credit is given.