670 

14 CFR Ch. I (1–1–19 Edition) 

Pt. 150, App. A 

(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 L

dn

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 
L

dn

65 dB contours. (No land use has to be 

identified as noncompatible if the self-gen-
erated noise from that use and/or the ambi-
ent noise from other nonaircraft and nonair-
port uses is equal to or greater than the 
noise from aircraft and airport sources.) 

(6) Location of noise sensitive public build-

ings (such as schools, hospitals, and health 
care facilities), and properties on or eligible 
for inclusion in the National Register of His-
toric Places. 

(7) Locations of any aircraft noise moni-

toring sites utilized for data acquisition and 
refinement procedures. 

(8) Estimates of the number of people re-

siding within the L

dn

65, 70, and 75 dB con-

tours. 

(9) Depiction of the required noise contours 

over a land use map of a sufficient scale and 
quality to discern streets and other identifi-
able 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 L

dn

70 dB noise contour and data re-

lated to L

dn

70 dB contour. When determina-

tions on land use compatibility using Table 
1 differ between L

dn

65–70 dB and the L

dn

70– 

75 dB, determinations should either use the 
more conservative L

dn

70–75 dB column or re-

flect determinations based on local needs 
and values. 

(4) Estimates of the number of people re-

siding within the L

dn

65, 70, and 75 dB con-

tours. 

T

ABLE

1—L

AND

U

SE

C

OMPATIBILITY

* W

ITH

Y

EARLY

D

AY

-N

IGHT

A

VERAGE

S

OUND

L

EVELS

 

Land use 

Yearly day-night average sound level (L

dn

) in decibels 

Below 

65 65–70 70–75 75–80 80–85 Over 

85 

R

ESIDENTIAL

 

Residential, other than mobile homes and transient lodgings ...

Y 

N(1) 

N(1) 

N 

N 

N 

Mobile 

home 

parks .....................................................................

Y  N N N N N 

Transient 

lodgings ......................................................................

Y 

N(1) N(1) N(1) N 

N 

P

UBLIC

U

SE

 

Schools .......................................................................................

Y 

N(1) N(1) N 

N 

N 

Hospitals and nursing homes .....................................................

Y 

25 

30 

N 

N 

N 

Churches, auditoriums, and concert halls ..................................

Y 

25 

30 

N 

N 

N 

Governmental 

services ...............................................................

Y  Y  25 30 N  N 

Transportation ............................................................................

Y 

Y 

Y(2) Y(3) Y(4) Y(4) 

Parking .......................................................................................

Y 

Y 

Y(2) Y(3) Y(4) N 

C

OMMERCIAL

U

SE

 

Offices, business and professional ............................................

Y 

Y 

25 

30 

N 

N 

Wholesale and retail—building materials, hardware and farm 

equipment.

Y 

Y 

Y(2) Y(3) Y(4) N 

Retail 

trade—general .................................................................

Y  Y  25 30 N  N 

Utilities ........................................................................................

Y 

Y 

Y(2) Y(3) Y(4) N 

Communication ...........................................................................

Y  Y  25 30 N  N 

M

ANUFACTURING AND

P

RODUCTION

 

Manufacturing, 

general ...............................................................

Y 

Y 

Y(2) Y(3) Y(4) N 

Photographic and optical ............................................................

Y 

Y 

25 

30 

N 

N 

Agriculture (except livestock) and forestry .................................

Y 

Y(6) 

Y(7) 

Y(8) 

Y(8) 

Y(8) 

Livestock farming and breeding .................................................

Y 

Y(6) 

Y(7) 

N 

N 

N 

Mining and fishing, resource production and extraction ............

Y 

Y 

Y 

Y 

Y 

Y 

R

ECREATIONAL

 

Outdoor sports arenas and spectator sports .............................

Y 

Y(5) 

Y(5) 

N 

N 

N 

Outdoor 

music 

shells, 

amphitheaters .........................................

Y  N N N N N 

Nature exhibits and zoos ...........................................................

Y 

Y 

N 

N 

N 

N 

Amusements, parks, resorts and camps ...................................

Y 

Y 

Y 

N 

N 

N 

Golf courses, riding stables and water recreation .....................

Y 

Y 

25 

30 

N 

N 

Numbers in parentheses refer to notes. 

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