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DES:mm^ 05/23/89R (#8/001) <br /> DES:mr, 06/13/89R <br /> DES:mmg 07/06/89R <br /> DES:mmg 07/13/89R <br /> the person designated by him/her to carry out the duties of <br /> such Officer specified in this Chapter. <br /> (4) 'Local Ambient' means the lowest sound level <br /> repeating itself during a six minute period as measured with <br /> a precision sound level meter, using slow response and A <br /> weighting. The minimum sound level shall be determined with <br /> the noise source at issue silent, and in the same location <br /> as the measurement of the noise level of the source or <br /> sources at issue. However, for purposes of this Chapter, in <br /> no case shall the local ambient be considered or determined <br /> to be less than: (a) 30 dBA for interior noise in Section <br /> 24. 20 (b) ; (b) 40 dBA in all other Sections. If a <br /> significant portion of the local ambient is produced by one <br /> or more individual identifiable sources which would <br /> otherwise be operating continuously during the six minute <br /> measurement period and contributing significantly to the <br /> ambient sound level, determination of the local ambient <br /> shall be accomplished with these separate identifiable noise <br /> sources silent. <br /> (5) 'Noise Level ' means the maximum continuous sound <br /> level or repetitive peak sound level , produced by a source <br /> or group of sources as measured with a precision sound level <br /> meter. In order to measure a noise level, the controls of <br /> the precision sound level should be arranged to the setting <br /> appropriate to the type of noise being measured. <br /> (6) 'Precision Sound Level Meter' means a device for <br /> measuring sound level in decibel units within the <br /> 2 1 999 <br />