Ill. Admin. Code tit. 35, pt. 910, app A, tbl. C

Current through Register Vol. 48, No. 43, October 25, 2024

Table C - Daytime long-term background ambient L[eq] levels in decibels by land use categories and octave-band level

	Background Category
Octave-Band Center Frequency (Hz)	1	2	3	4	5
31	70	63	55	49	43
63	71	64	57	51	45
125	72	64	57	51	45
250	70	63	55	49	43
500	67	59	51	45	39
1000	63	54	45	39	33
2000	57	48	38	33	26
4000	53	42	30	25	20
8000	48	36	24	19	13