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 Concord
 Code of Ordinances
 Title I. GENERAL CODE
 Chapter 13. PUBLIC HEALTH
 Article 13-6. NOISE

  § 13-6-5. Tables  

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  • TABLE I

    LIMITING NOISE LEVEL FOR USE DISTRICTS

    Octave Band Center
    Frequency     		Maximum Permissible Sound
    Pressure (Levels In Decibels
    Re: 0.0002 Microbars)
    USE DISTRICTS
    "A" "B" "C"
    63 66 80 81
    125 61 75 76
    250 56 67 71
    500 56 60 65
    1000 46 54 59
    2000 46 48 54
    4000 41 42 50

     

    If the noise is not smooth and continuous, one or more of the corrections in Table II below shall be added to or subtracted from each of the decibel levels in Table I of this section.

    TABLE II

    TYPE OF OPERATION IN CHARACTER OF NOISE
    CORRECTION IN DECIBELS

    Noise source operated less than 20% of any one-hour period plus 5*
    Noise source operated less than 5% of any one-hour period; plus 10*
    Noise of impulsive character (hammering, etc.); minus 5
    Noise source operated less than 1% of any one-hour period; plus 15*
    Noise of periodic character (hum, screech, etc.); minus 5

    *Apply one of these corrections only.

    If the noise occurs between the hours of 10:00 p.m. and 7:00 a.m. on Monday through Saturday or at any time on Sunday or holidays, seven (7) shall be subtracted from each of the decibels levels given in Table I of this section.

    TABLE III

    LIMITING NOISE LEVELS FOR MOTOR VEHICLES

    (a)

    Trucks and Buses (over 10,000 pounds):

    87 dB(A) measured at 50 feet-maximum allowable limit;
    93 dB(A) measured at 25 feet-maximum allowable limit;

    Trucks and Buses (under 10,000 pounds):

    80 dB(A) measured at 50 feet-maximum allowable limit;
    86 dB(A) measured at 25 feet-maximum allowable limit;

    (b)

    Passenger Cars:

    78 dB(A) measured at 50 feet-maximum allowable limit;
    84 dB(A) measured at 25 feet-maximum allowable limit;

    (c)

    Other Vehicles (but excluding those covered by RSA 269-B):

    87 dB(A) measured at 50 feet-maximum allowable limit;
    93 dB(A) measured at 25 feet-maximum allowable limit;

    (d)

    Snow traveling vehicle, motorbike, motorcycle, trail bike, all-terrain vehicles, including four-wheel-drive vehicles or other motorized two-wheeled or three-wheeled trail type vehicle and tract type vehicle. The limiting noise levels established for these vehicles by RSA 269-B:11 are hereby adopted, and made a part of this Ordinance.