Dobbins JLUS IMP Public Draft Light Pollution Study | Page 46
Recommendations for On-Base Mitigation Off-Base Mitigation Analysis
To lessen the light pollution impact on‐base, it is recommended that the
following strategies are employed: Off‐base mitigation analysis begins with identifying and understanding the
various types of lighting luminaires that are used in the Light MCA, who
operates and maintains them, and what types of uses the lighting luminaires
are used for. By understanding these items, workable solutions can be
proposed to mitigate further light pollution in the Light MCA. This analysis is
designed to incorporate various fixture options to reduce light pollution and
provide a rough order of magnitude cost for one‐to‐one replacement.
Assign Lighting Zones across the base per the Unified Facilities
Criteria (UFC) 3‐530‐01 Interior, Exterior Lighting and Controls as
identified in Table 5.
Follow UFC 3‐530‐01 for new construction and retrofitting of
exterior lighting systems. This effort will ensure the following:
o Consistent color temperature of the lights
o Color temperatures do not exceed 4100K (white light)
o Fully shielded lights
o No light emitted above 90 degrees
o Appropriate amount of light where needed
o Glare restrictions are in place
Since the base is already constructed, there may be limited opportunities to
upgrade the existing lighting. However, replacing existing lighting with
newer LED technologies may have a short payback with less energy and
maintenance, in addition t o reducing sky glow. Funds may be dedicated to
education or incentive programs to accelerate the replacement of existing
exterior lighting systems outside of scheduled upgrades.
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Explanation of Lighting Components
There are various components to lighting that affect how light is illuminated,
what illuminated light looks like, and how light can affect environmental
conditions. The Illuminating Engineering Society of North America (IES) has
established metrics for determining the backlight (B), uplight (U), glare (G)
rating of an outdoor luminaires (TM‐15‐11). Each component has a scale of
0 to 5.
Luminaires
Luminaires are complete lighting units consisting of a land/light source(s)
together with the parts designed to distribute the light to position and
protect the light sources, and to connect the light sources to the power
supply. This also sometimes referred to as a fixture.
DRAFT Dobbins Air Reserve Base Light Pollution Study
March 2018