Whereas the MCAOD includes regulatory and policy strategies as part of the
JLUS implementation, the Military Influence Area (MIA) is a planning
technique that ensures JLUS strategies for coordination and awareness are
applied to the appropriate areas and that locations deemed not subject to a
specific compatibility issue are not adversely impacted by strategies
inappropriate for their location or circumstance. The MIA encompasses all
the MAAs and its geographic boundary is defined by the largest
MAA boundary. The MIA should be used by the JLUS partners within the
DCR JLUS Study Area to address ways to prevent or mitigate compatibility
issues. For the purpose of this JLUS Implementation Plan, there is one MIA
for the DCR Study Area depicted on Figure 22.
Seymour Johnson AFB MCAs
The Seymour Johnson AFB MCAOD comprises five MCAs:
Coordination MCA
Noise MCA
Safety MCA
Imaginary Surfaces MCA
Bird/ Wildlife Air Strike Hazard MCA
The MCAs are used to define the geographic areas where the JLUS strategies
are to be applied. This technique ensures the strategies are applied to the
appropriate areas, and that locations deemed not subject to a specific
compatibility issue are not adversely impacted by regulations inappropriate
for their location or circumstance.
These MCAs are discussed in the following sections and are organized by
facility.
Coordination Military Compatibility Area (Figure 23)
The Coordination MCA is designed to capture lands adjacent to
Seymour Johnson AFB and is intended to foster cooperation,
communication, and awareness to keep county and city leadership and
property owners informed of the operations that may impact their quality of
life and the leadership at Seymour Johnson AFB apprised of community
actions that may impact military operations. The Coordination MCA includes
all land within five miles of the boundary of Seymour Johnson AFB.
Noise Military Compatibility Area (Figure 24)
Noise is often a concern to the public surrounding military installations with
flying missions. The Noise MCA includes all land located off‐installation
within Seymour Johnson AFB noise contours greater than 65 decibels (dB)
day‐night sound level (DNL) associated with military aircraft activities.
Residential developments and other noise‐sensitive land uses within this
MCA may be subject to sound attenuation measures to reduce interior noise
impacts and achieve a maximum interior noise level of 45 dB DNL.
Without a requirement for sound attenuation via building code
requirements, certain uses such as residential, and those that congregate
large groups, including schools, healthcare facilities, and churches, are not
compatible within areas that experience noise levels of 65 dB DNL or
greater. Uses that are compatible within airport noise contours are office /
retail and manufacturing / industrial when interior noise levels are less than
70 dB DNL. Local building codes can be used to ensure that
noise‐attenuation measures are incorporated in all new development within
the Noise MCA.
Safety Military Compatibility Area (Figure 25)
The proposed Safety MCA would regulate compatible land use types and
densities / intensities within the Clear Zones (CZs) and Accident Potential
Zones (APZs) I and II of Seymour Johnson AFB’s runway. Each of these would
be a subzone of the Safety MCA. The current location of each safety
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Seymour Johnson AFB and Dare County Range JLUS Report