§ 122-60. Lighting.

Subject to the provisions set forth below, walkways, driveways, building entryways, off-street parking and loading areas, and building complexes with common areas involving commercial, industrial, office, multiple-family uses, or manufactured housing parks shall be illuminated in accordance with the following regulations.

(1)

Permitted lighting. Only nonglare, color-corrected lighting shall be permitted. Lighting shall be placed and shielded so as to focus the light downward onto the site and not onto adjoining property. The lighting source shall not be directly visible from adjoining properties. Lighting shall be shielded so that it does not cause glare or interfere with the vision of motorists (see Illustration 3-1).

(2)

General regulations.

a.

All outdoor lighting shall be shielded.

b.

Nonessential lighting shall be turned off after business hours, leaving only that lighting that is necessary for site security.

c.

Light trespass from a property shall not to exceed 0.3 foot-candles at any property line that abuts residentially zoned property or 0.5 foot-candles at the property line for any other zoning district, measured five feet from the ground.

d.

Parking lot and building-mounted security lighting shall be full cut-off fixtures that are directed downward. Fixtures shall be designed and shielded so as to prevent light from projecting above a 90 degree horizontal plane (see Illustration 3-1).

e.

Uplighting of buildings for aesthetic purposes shall be confined to the target surface.

f.

Canopies and similar structures used by gas stations, banks, and other uses shall be limited to providing fully recessed lighting fixtures so that sources of illumination and glare are not visible from adjoining lots, sidewalks, and streets. The total lamp output shall be limited to 20.0 foot-candles maximum under the canopy.

(3)

Intensity. In parking areas, the light intensity shall average a maximum of 10.0 foot-candles. In motor vehicle dealerships, the light intensity shall average a maximum 15.0 foot-candles and shall be confined within the lot lines of the lot on which the dealership is located. Illumination used for pedestrian areas, shall average a minimum of 2.0 foot-candles.

(4)

Height. Except as noted below, lighting fixtures shall not exceed a height of 20 feet measured from the ground level to the centerline of the light source. Fixtures should provide an overlapping pattern of light at a height of approximately seven feet above ground level. The planning commission or planning department staff may modify these height standards in commercial and industrial districts during site plan review, special use, and PUD review and approval procedures, based on consideration of the following:

a.

The position and height of buildings, other structures, and trees on the site;

b.

The potential off-site impact of the lighting;

c.

The character of the proposed use; and

d.

The character of surrounding land use.

(5)

Sign lighting. Signs shall be illuminated in accordance with the regulations set forth in article XX.

(6)

Site plan regulations. All lighting, including lighting that is intended to be primarily decorative in nature, shall be shown on site plans in sufficient detail to allow determination of the effects of such lighting upon adjacent properties, traffic safety, and overhead sky glow.

Illustration 3-1. Lighting orientation and shielding

(Ord. No. 2005-11, 11-21-05; Ord. No. 2010-21, § 3, 12-20-10)