21.17.050 General requirements.
A. The following general requirements shall apply to all proposed outdoor lighting:
1. Site lighting trespass onto adjacent residential properties shall be minimized;
2. Site lighting shall minimize light spillage into the night sky;
3. Outdoor lighting shall be controlled by either a combination of a photo sensor and a time switch or an astronomical time switch. All time switches shall be capable of retaining programming and the time setting during loss of power for a period of at least 10 hours;
4. Fixtures and lighting systems shall be maintained in good working order and in a manner that serves the original design intent of the system; and
5. The applicant shall submit to the city a site lighting plan to enable a determination that the applicable provisions of this chapter will be satisfied.
a. The outdoor lighting plan shall include the following:
i. Manufacturer specification sheets, cut-sheets or other manufacturer provided information for all proposed lighting fixtures;
ii. The proposed location, mounting height, and aiming point of all outdoor lighting fixtures; and
iii. If building elevations are proposed for illumination, drawings shall be provided for all building elevations showing fixtures, portions of the elevations to be illuminated, illumination levels of the elevations, and the aiming point for any remote light fixture.
b. If needed to review proposed outdoor lighting installations, the city may require additional information following the initial lighting plan submittal, including but not limited to:
i. A brief written narrative, with accompanying plan or sketch, which demonstrates the objectives of the lighting;
ii. Photometric data, BUG ratings as defined by the Illuminating Engineering Society of North America (IESNA), Color Rendering Index (CRI) of all lamps, or LEDs, and other descriptive information on the fixtures, or designation as IESNA “cutoff fixtures”;
iii. A computer generated photometric grid showing footcandle readings every 10 feet within the property or site, and 10 feet beyond the property lines; iso-footcandle contour line style plans are also acceptable; and
iv. Landscaping information that indicates mature vegetation in order to evaluate the long-term and seasonal effectiveness of lighting or screening of lighting. (Ord. 3415 § 36, 2022; Ord. 3178 § 2, 2016)