Outdoor recreation, sport courts, or athletic field lighting may be exempted from the shielding, CCT, and hours of operation requirements provided that the following conditions are met:
(a) Facilities in Zone A and Zone B:
(1) Lighting at an outdoor recreational facility may remain on to allow an organized recreational event in progress to be completed, provided the event and the facility are not violating the terms of any permit issued by the County or any law or regulation.
(b) Facilities in Zone C:
(1) The design and installation of lighting for outdoor recreation, sport courts, or athletic fields shall follow the illuminance and uniformity guidelines of the IES according to the appropriate class of play; and
(2) The correlated color temperature of the lighting is ≤ 4,200K as listed on the lamp or luminaire manufacturer specification sheets; and
(3) The luminaires shall utilize internal or external shielding in order to minimize uplight and off-site direct visibility of the light sources. A small amount of uplighting is permitted for those activities where the playing unit (ball, etc.) can exceed the height of the luminaires; and
(4) Field lighting is provided exclusively for the illumination of the surface of play and viewing stands and not for other applications, and shall not exceed 50 percent of the full light output when the field is being utilized for other than practice and tournament play; and
(5) Off-site impacts (spill light/light trespass) shall be limited to ≤ 2.0 vertical footcandles at any of the property lines (based upon maintained lumen values) unless approved otherwise by the building official. A photometric study documenting compliance with the horizontal on-site illuminance level(s) (field, court, etc.) at the IES-recommended calculation height, and the perimeter vertical spill illuminance at 5 feet above the adjacent grade and oriented perpendicular into the site, must be included with the plan submittal; and
(6) Lights must be extinguished by 10:00 p.m. or one hour after the end of play, whichever is later; and
(7) Title 24-compliant timing or central control devices must be installed to prevent the lighting from being left on later than one hour after the facility is occupied.
(Added by Ord. No. 10691 (N.S.), effective 12-18-20)