Yearly Day-Night Average Sound Levels (DNL) in decibels
Below 65
Land Uses
65-70 70-75 75-80 80-85 Over 85
Residential Residential, other than mobile homes and transient lodgings
Y N (1)
N (1)
N N N
Mobile home parks Transient lodgings
Y
N N N N N
Y N (1)
N (1)
N (1)
N N
Public Use Schools
Y N (1)
N (1)
N N N
Hospitals and nursing homes
Y 25 30 N N N
Religious institutions or assemblies, auditoriums, and concert halls
Y 25 30 N N N
Governmental services
Y Y Y
Y 25 30 N N
Y Y (2) Y Y (2)
Y (3) Y (3)
Y (4) Y (4)
Y (4)
Transportation
Parking
N
Commercial Use Offices, business and professional Wholesale and retail—building materials, Hardware and farm equipment
Y
Y 25 30 N N
Y Y (2)
Y (3)
Y (4)
Y
N
Retail trade—general
Y Y Y
Y 25 30 N N
Y Y (2)
Y (3)
Y (4)
Utilities
N
Communication
Y 25 30 N N
Manufacturing and Production Manufacturing general
Y Y (2)
Y (3)
Y (4)
Y Y
N
Photographic and optical
Y 25 30 N N
Y Y (6) Y Y (6)
Y (7) Y (7)
Y (8)
Y (8)
Y (8)
Agriculture (except livestock) and forestry
Livestock farming and breeding
N N N
Mining and fishing, resource production and extraction Recreational Outdoor sports arenas and spectator sports
Y
Y Y Y Y Y
Y Y (5)
Y (5)
N N N
Outdoor music shells, amphitheaters
Y Y Y
N N N N N Y N N N N Y Y N N N
Nature exhibits and zoos
Amusements, parks, resorts and camps
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