Item 4E
Proposed changes to the Outdoor Lighting (Ordinance 693-C)
Item 4E
Purpose/Background
Strategic Alignment
C1 Achieve the highest standards of safety & security
B6 Optimize use of technology
Southlake 2030 Goals and Objectives - 7.2- Promote public awareness and education on such sustainability issues as public health, energy and water conservation and overall environmental
stewardship.
Southlake 2030 recommendation: As development continues, light pollution is an increasing problem in North Central Texas -- Evaluate options for addressing and reducing light pollution
City Council Ordinance Priority Schedule
C4 Attract & keep top-tier businesses to drive a dynamic & sustainable economic environment
March 20th – Work Session
Proposed Ordinance Changes
Define color temperature ranges
Permit LED luminaries on poles over
42” in height and exterior wall mounted
light fixtures (4,300K)
Variance criteria
Shielding next to residential
Color Temperatures
Color Temperatures over 4,301 K are called cool colors (blueish/white)
Color Temperature at 3,000 K – 4,300K are called neutral colors
Color Temperatures below 3,000K are called warm colors (yellowish white through red).
Temperature Ranges
Kelvin Temperature
Examples of Fully Shielded Fixture
Examples of Fixtures Not Fully Shielded
Variance
(2) Upon finding that an outdoor light, or system of outdoor lights required for a particular use cannot reasonably comply with the standard and provide sufficient illumination for safety
or security, as determined by recommended practices adopted by the Illuminating Engineering Society of North American for the particular use or other evidence submitted by a professional
engineer or other professional organization.
(3) Upon finding where a literal application or enforcement of the regulations would result in practical difficulty or unnecessary hardship and the relief granted would not be contrary
to the public interest or the intent but do substantial justice and be in accordance with the spirit of the regulations and this Ordinance.
Ken Baker 817-748-8067