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(1) Encourage community outdoor lighting practices that will promote personal safety and crime prevention.
(2) Eliminate glare onto neighboring property or street rights-of-way.
(3) Limit light trespass over a property line onto residential property.
(b) Lighting standards required for forms.
(1) The following lighting standards apply to all MD, NF, BCF, UT, RE, and WM forms.
A. Methods to achieve intent.
1. Outdoor lighting fixture height. The height of all outdoor lighting fixtures when located within 150 feet of residentially used or zoned property shall not exceed 28 feet above the grade immediately below the lighting fixture. The height of all outdoor lighting fixtures located more than 150 feet off all DD and AD forms shall not exceed 38 feet above the grade immediately below the lighting fixture.
2. Light trespass.
a. The maximum light level shall be no greater than three foot candles measured three feet zero inches above grade at the property line for all MD, NF, BCF, RE, WM, OPEN, and UT forms adjacent to all DD and AD forms.
b. Fully shielded (cutoff) light fixtures shall be required when luminaires are greater than 2,220 lumens and located within 150 feet of all DD and AD forms, or when luminaires are greater than 2,220 lumens and located within 150 feet of a street right-of-way.
3. Canopy glare. Canopy lights shall contain fully shielded (cutoff) light fixtures to prevent glare onto adjacent property or street rights-of-way, except for focus lighting.
4. Light color. Low-pressure sodium light sources have low color rendition and are not permitted light sources.
(c) Exemptions, amendments, and nonconforming lighting.
(1) Exemptions. The following outdoor lighting fixtures are exempt from these lighting standards:
A. Outdoor recreation facilities.
B. Illuminated flags or statues.
C. Airport runways.
D. Telecommunication towers.
E. Broadcast towers.
F. Historic period lighting in historic districts.
(2) Amending approved lighting plans: lamp or fixture substitution. Should any outdoor lighting fixture or the type of light source therein be changed after the permit has been issued, a change request must be submitted to the zoning officer for his or her approval, together with adequate information to assure compliance with this Code, which must be received prior to substitution.
(3) Nonconforming lighting. All outdoor lighting fixtures lawfully installed prior to September 28, 2006, are exempt from all requirements of this Code.
(1992 Code, App. B, § 15.49.130) (Ord. 42-83, passed 6-27-1983; Ord. 115-99, passed 11-1-1999; Ord. 23-02, passed 4-1-2002; Ord. 106-06, passed 9-5-2006; Ord. 129-07, passed 8-6-2007; Ord. 9-13, passed 3-19-2013)