634.08 IMMEDIATE THREATS TO HEALTH AND WELFARE.

   No person shall operate, cause to be operated or permit on public or private property any source of continuous and/or impulsive sound in such a manner as to create a sound level which exceeds the limits set forth in Tables 3 or 4 when measured at a distance of fifty feet or fifteen meters from such source.

TABLE 3. CONTINUOUS SOUND LEVELS WHICH POSE AN IMMEDIATE THREAT
TO HEALTH AND WELFARE (MEASURED AT 50 FEET OR 15 METERS)*

 

Sound Level Limit (dBA)      Duration    90            24 hours    93            12 hours    96            6 hours    99            3 hours    102            1.5 hours    105            45 minutes    108            22 minutes

*Use equal energy time-intensity trade-off if level varies; find energy equivalent over 24 hours.

TABLE 4. IMPULSIVE SOUND LEVELS WHICH POSE AN IMMEDIATE THREAT
TO HEALTH AND WELFARE (MEASURED AT 50 FEET OR 15 METERS)

 

Number of Repetitions Sound Level Limit (dB)   per 24 Hour Period      145            1    135            10    125            100

 

(Ord. 36-94. Passed 3-14-94.)