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Allowed lighting in Zone B shall meet the following standards:
(a) Shielding and Lamp Requirements
Class I - Color Rendition Important | Class II - Safety and Security | Class III - Decorative and Aesthetic |
Fully Shielded Luminaires: - Luminaires of any type or intensity | Fully Shielded Luminaires: - Low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum (any intensity) - Luminaires (≤ 4,050 lumens) - High pressure sodium on private roadways | Fully Shielded Luminaires: - Low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum (any intensity) - Luminous tube lamps |
Unshielded Luminaires: - Prohibited | Unshielded Luminaires: - Luminaires activated by motion sensors (≤ 2,000 lumens) - Entrance luminaires (≤ 2,000 lumens) | Unshielded Luminaires: - Luminaires (≤ 2,000 lumens) |
All lumens shall be based upon the initial lumen value of the light source. |
(b) Hours of Operation. All Class I and Class III lighting shall be turned off between 11:00 p.m. and sunrise, except:
(1) On-premises signs may be illuminated while the facility is open to the public; and
(2) Off-premises signs may remain lighted until midnight; and
(3) Outdoor illumination of a sales area, commercial area, assembly area, repair area, or industrial area is allowed when the area is in use and the use is not prohibited by any permit issued by the County or by any law or regulation; and
(4) Recreation, sports court, and athletic field lighting, pursuant to the conditions of section 51.210.
(c) Signage Requirements.
(1) Lighting for on-premises signs shall be shielded where feasible and focused to minimize light spill into the night sky or onto adjacent properties.
(2) All lighting for off-premises signs shall be aimed downwards and fully shielded.
(Added by Ord. No. 10691 (N.S.), effective 12-18-20)
Allowed lighting in Zone C shall meet the following standards:
(a) Shielding, Lumen, and Color Requirements
Class I - Color Rendition Important | Class II - Safety and Security | Class III - Decorative/Aesthetic | |
Shielding | - All luminaires shall be fully shielded | - All luminaires >1,000 lumens shall be fully shielded - Full shielding is not required for luminaires ≤ 1,000 lumens | - All luminaires >1,000 lumens shall be fully shielded - Full shielding is not required for luminaires ≤ 1,000 lumens |
Maximum Light per Site1 (50,000 lumens per gross acre)2 | - 100% of the maximum allowed lumens per site | - 100% of the maximum allowed lumens per site - Non-fully shielded lighting shall not exceed 10% of the maximum allowed lumens per site or 10% of the 5,000 minimum lumen allowance, whichever is greater | - Irrespective of shielding state, lighting shall not exceed 20% of the maximum allowed lumens per site or 20% of the 5,000 minimum lumen allowance, whichever is greater |
Color | - CCT ≤ 3,000K - Low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum | - CCT ≤ 3,000K - Low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum | - CCT ≤ 3,000K - Low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum |
1. A site may include one or more lots, as determined by the building official. 2. The maximum allowed lumens per site shall be determined by multiplying the gross site acreage by 50,000 lumens (e.g., a 0.5-acre site * 50,000 lumens/acre = 25,000 maximum site lumens). The maximum site lumens is inclusive of all lighting classes. All sites shall be allowed a minimum of 5,000 maximum lumens, regardless of the size of the property. 3. All lumens shall be based upon the initial lumen value of the light source. |
(b) Hours of Operation. All Class I and Class III lighting shall be extinguished two hours after sunset or within 30 minutes after the close of business, whichever is later, until one hour before sunrise, except:
(1) On-premises signs shall be extinguished one hour after sunset until one hour before sunrise, unless the business is operating; and
(2) Off-premises signs shall be extinguished one hour after sunset until one hour before sunrise; and
(3) Outdoor illumination of a sales area, commercial area, assembly area, repair area, or industrial area is allowed when the area is in use and the use is not prohibited by any permit issued by the County or by any law or regulation; and
(4) Recreation, sports court, and athletic field lighting, pursuant to the conditions of SEC. 51.210.
(c) Signage Requirements. All on-premises signs and off-premises signs shall comply with all of the following provisions:
(1) All signs shall have a luminance of less than or equal to 100 candelas per square meter (nits) between sunset and sunrise. For electronic signs, the luminance shall be measured under the conditions of a full-white display; and
(2) The luminous/illuminated surface area of an individual sign shall not exceed 200 square feet.
(d) Publicly Owned Lighting.
(1) New installations of outdoor lighting on public properties and rights-of-way shall only be installed upon determination by the director of the responsible department that the lighting is necessary for the safety and welfare of the general public, and that the result can only be achieved through the provision of outdoor lighting and not through other passive means, such as reflectorized roadway paint or markers.
(2) All new public lighting shall be regulated with adaptive controls such that the lighting of areas is restricted to times, places, or amounts required for safe occupancy or use.
(Added by Ord. No. 10691 (N.S.), effective 12-18-20)
An applicant for any permit required by the County for work involving an outdoor luminaire, unless the work is exempt as provided in this chapter, shall submit evidence with the permit application that the proposed work will comply with this chapter. The submission shall contain the following:
(a) A map or other drawing showing the location of the property where any outdoor luminaire will be installed.
(b) Plans indicating the location on the property where each type of outdoor luminaire will be installed, indicating the type of fixture.
(c) The specifications for each outdoor luminaire to be installed, including but not limited to manufacturer specification sheets, photometric studies, and drawings.
(d) To be considered complete, the plans and descriptions shall enable the plans examiner to readily determine whether the work will comply with the requirements of this chapter. If the plans examiner cannot determine from the applicant's submission whether the proposed work complies with this chapter, the examiner may reject the application or allow the applicant to submit additional information.
(Added by Ord. No. 9974 (N.S.), effective 4-3-09; amended by Ord. No. 10691 (N.S.), effective 12-18-20)
The outdoor lighting equipment installed at a project site (luminaires, lamps, poles, finishes, controls, etc.) and the locations thereof shall not be substituted or altered in any way from the approved plans (except for the use of prior-approved alternate manufacturers with detailed specifications already listed in the Luminaire & Lighting Control Device Schedule of the approved plans) without first submitting the changes to the County (including updated photometric studies where appropriate) and then receiving written approval. Failure to comply with this requirement can result in penalty action from the County, including administrative citations, civil penalties, and a decline to issue the final Certificate of Occupancy or final Certificate of Completion until the project is brought into conformance with the approved plans, to the satisfaction of County staff.
(Added by Ord. No. 10691 (N.S.), effective 12-18-20)
County airports and County correctional institutions located in the unincorporated area of the County shall be subject to the following special requirements:
(a) Outdoor lighting at a County airport in an area not regulated by state or federal law, such as a parking lot or outside building, shall be fully shielded and use low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum.
(b) Outdoor lighting at a County correctional institution in an area not regulated by state or federal law, such as a parking lot, shall be fully shielded and use low pressure sodium or narrow spectrum amber LED or another light source with the same limited spectrum.
(Added by Ord. No. 9974 (N.S.), effective 4-3-09; amended by Ord. No. 10691 (N.S.), effective 12-18-20)
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)
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