Table 5-4
Recommended Land Uses Under Aircraft Noise Contours (continued)
Land Use
SLUCM No.
Land Use Name
Suggested Land Use Compatibility
DNL 65‐69
DNL 70‐74
DNL 75‐79
DNL 80‐84
DNL 85+
2. Measures to achieve NLR of 25 dB must be incorporated into the design and construction of portions of these buildings where the public is received, office areas, noise sensitive areas, or where
the normal noise level is low.
3. Measures to achieve NLR of 30 dB must be incorporated into the design and construction of portions of these buildings where the public is received, office areas, noise sensitive areas, or where
the normal noise level is low.
4. Measures to achieve NLR of 35 dB must be incorporated into the design and construction of portions of these buildings where the public is received, office areas, noise sensitive areas, or where
the normal noise level is low.
5. If project or proposed development is noise sensitive, use indicated NLR; if not, land use is compatible without NLR.
6. Buildings are not permitted.
7. Land use is compatible provided special sound reinforcement systems are installed.
8. Residential buildings require an NLR of 25 dB.
9. Residential buildings require an NLR of 30 dB.
10. Residential buildings are not permitted.
11. Land use that involves outdoor activities is not recommended, but if the community allows such activities, hearing protection devices should be worn when noise sources are present. Long-term
exposure (multiple hours per day over many years) to high noise levels can cause hearing loss in some unprotected individuals.
The following is a summary of land use compatibility within the 65‐69 dB
noise zone:
Residential buildings are discouraged in the 65‐69 dB DNL noise
contours; however, they may be acceptable when no other
development options are available, provided NLR measures achieve a
25 dB reduction in outdoor to indoor noise. Mobile homes are
considered incompatible in all noise contours.
Commercial uses are compatible within the 65‐69 DNL dB noise
contour.
Page 5‐58
Healthcare uses, such as hospitals and medical facilities and education
facilities including childcare services, are conditionally compatible
within the 65 – 75 dB DNL noise contours provided they achieve NLR
in the design and construction of buildings.
The compatibility of cultural, entertainment and recreation uses
varies depending on type of use and whether there are indoor versus
outdoor elements. Most of these uses are compatible or
conditionally compatible within the 65‐69 dB DNL noise contour with
the exception of outdoor amphitheaters, which are incompatible in all
noise contours.
Background Report