Section 910.APPENDIX A Tables of Long-Term Background Ambient Noise

Section 910.TABLE A Daytime long-term background ambient L_eq levels in decibels by land use categories and 1/3 octave-band level

	Background Category
Octave-Band Center Frequency (Hz)		1	2	3	4	5

20		63	56	48	42	36
25		64	57	49	43	37
31		65	58	50	44	38

40		65	58	51	44	38
50		66	59	51	45	39
63		66	59	52	46	40

80		67	60	52	46	40
100		68	60	53	47	41
125		67	59	52	46	40

160		66	59	52	46	40
200		66	58	51	45	39
250		65	58	50	44	38

315		64	57	49	43	37
400		63	55	48	42	36
500		62	54	46	40	34

630		61	53	44	38	32
800		60	51	42	36	30
1000		58	49	40	34	28

1250		56	47	38	32	26
1600		54	45	36	30	24
2000		52	43	33	28	21

2500		50	41	30	25	19
3150		49	39	28	23	17
4000		48	37	25	20	15

5000		46	35	23	18	13
6300		44	33	21	16	10
8000		43	31	19	14	8

10,000		41	29	17	12	6
12,500		39	27	15	10	4