(Amended by Ord. No. 156,363, Eff. 3/29/82.)
Where the ambient noise level is less than the presumed ambient noise level designated in this section, the presumed ambient noise level in this section shall be deemed to be the minimum ambient noise level for purposes of this chapter.
SOUND LEVEL “A” DECIBELS
(In this chart, daytime levels are to be used from 7:00 a.m. to 10:00 p.m. and nighttime levels from 10:00 p.m. to 7:00 a.m.)
PRESUMED AMBIENT NOISE LEVEL (dB(A))
A1, A2, RA, RE, RS, RD, RW1, RW2, R1, R2, R3, R4, and R5
P, PB, CR, C1, C1.5, C2, C4, C5, and CM
M1, MR1, and MR2
M2 and M3
At the boundary line between two zones, the presumed ambient noise level of the quieter zone shall be used.