Pt. 150, App. A

14 CFR Ch. I (1-1-19 Edition)

(e) Except as provided in (f) below, the
noise exposure maps must also contain and
indentify:
(1) Runway locations.
(2) Flight tracks.
(3) Noise contours of Ldn 65, 70, and 75 dB
resulting from aircraft operations.
(4) Outline of the airport boundaries.
(5) Noncompatible land uses within the
noise contours, including those within the
Ldn 65 dB contours. (No land use has to be
identified as noncompatible if the self-generated noise from that use and/or the ambient noise from other nonaircraft and nonairport uses is equal to or greater than the
noise from aircraft and airport sources.)
(6) Location of noise sensitive public buildings (such as schools, hospitals, and health
care facilities), and properties on or eligible
for inclusion in the National Register of Historic Places.
(7) Locations of any aircraft noise monitoring sites utilized for data acquisition and
refinement procedures.
(8) Estimates of the number of people residing within the Ldn 65, 70, and 75 dB contours.

(9) Depiction of the required noise contours
over a land use map of a sufficient scale and
quality to discern streets and other identifiable geographic features.
(f) Notwithstanding any other provision of
this part, noise exposure maps prepared in
connection with studies which were either
Federally funded or Federally approved and
which commenced before October 1, 1981, are
not required to be modified to contain the
following items:
(1) Flight tracks depicted on the map.
(2) Use of ambient noise to determine land
use compatibility.
(3) The Ldn 70 dB noise contour and data related to Ldn 70 dB contour. When determinations on land use compatibility using Table
1 differ between Ldn 65-70 dB and the Ldn 70-
75 dB, determinations should either use the
more conservative Ldn 70-75 dB column or reflect determinations based on local needs
and values.
(4) Estimates of the number of people residing within the Ldn 65, 70, and 75 dB contours.

TABLE 1 - LAND USE COMPATIBILITY* WITH YEARLY DAY-NIGHT AVERAGE SOUND LEVELS
Yearly day-night average sound level (Ldn) in decibels
Land use
Below 65

65-70

70-75

75-80

80-85

Over 85

RESIDENTIAL
Residential, other than mobile homes and transient lodgings ...
Mobile home parks .....................................................................
Transient lodgings ......................................................................

Y
Y
Y

N(1)
N
N(1)

N(1)
N
N(1)

N
N
N(1)

N
N
N

N
N
N

Y
Y
Y
Y
Y
Y

N(1)
25
25
Y
Y
Y

N(1)
30
30
25
Y(2)
Y(2)

N
N
N
30
Y(3)
Y(3)

N
N
N
N
Y(4)
Y(4)

N
N
N
N
Y(4)
N

Y
Y

Y
Y

25
Y(2)

30
Y(3)

N
Y(4)

N
N

Y
Y
Y

Y
Y
Y

25
Y(2)
25

30
Y(3)
30

N
Y(4)
N

N
N
N

Y
Y
Y
Y
Y

Y
Y
Y(6)
Y(6)
Y

Y(2)
25
Y(7)
Y(7)
Y

Y(3)
30
Y(8)
N
Y

Y(4)
N
Y(8)
N
Y

N
N
Y(8)
N
Y

Y
Y
Y
Y
Y

Y(5)
N
Y
Y
Y

Y(5)
N
N
Y
25

N
N
N
N
30

N
N
N
N
N

N
N
N
N
N

PUBLIC USE
Schools .......................................................................................
Hospitals and nursing homes .....................................................
Churches, auditoriums, and concert halls ..................................
Governmental services ...............................................................
Transportation ............................................................................
Parking .......................................................................................
COMMERCIAL USE
Offices, business and professional ............................................
Wholesale and retail - building materials, hardware and farm
equipment.
Retail trade - general .................................................................
Utilities ........................................................................................
Communication ...........................................................................
MANUFACTURING AND PRODUCTION
Manufacturing, general ...............................................................
Photographic and optical ............................................................
Agriculture (except livestock) and forestry .................................
Livestock farming and breeding .................................................
Mining and fishing, resource production and extraction ............
RECREATIONAL
Outdoor sports arenas and spectator sports .............................
Outdoor music shells, amphitheaters .........................................
Nature exhibits and zoos ...........................................................
Amusements, parks, resorts and camps ...................................
Golf courses, riding stables and water recreation .....................
Numbers in parentheses refer to notes.

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