N.J. Admin. Code § 7:29-2.10

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:29-2.10 - Calculations

(a) Corrected source sound level: Correct the total sound level for the neighborhood residual sound in accordance with the procedure for using Table 1 to determine the sound level from the sound source of interest. If the difference between the total sound level and the neighborhood residual sound level is greater than 10 dB no correction is necessary.

TABLE 1
THE DETERMINATION OF SOURCE SOUND LEVEL FROM TOTAL AND NEIGHBORHOOD
RESIDUAL SOUND MEASUREMENTS
A Sound Level	B Correction Factor
Difference (Decibels)	(Decibels)
0.5	9.6
1	7
2	4
3	3
4	1.8
5	1.6
6	1.2
7	1
8	0.75
9	0.6
10	0.5
Greater than 10	0.0

Procedure for Using Table 1

Step 1: Subtract the maximum measured level of the neighborhood residual sound from the minimum measured level of the total sound. If the value obtained is a decimal number, round the value down to the nearest lower value in Column A.

Step 2: In Column A, find the difference determined under Step 1 and its corresponding correction factor in Column B.

Step 3: Subtract the value obtained from Column B in Step 2 from the minimum measured total sound level (used in Step 1) to determine the sound level attributable to the sound source.

N.J. Admin. Code § 7:29-2.10

Amended by R.2007 d.227, effective 8/6/2007.
See: 38 N.J.R. 2774(a), 39 N.J.R. 3372(a).
In the Procedure for Using Table 1, inserted ", including decimals, if displayed" and the last sentence in Step 1; and added Step 4.
Amended by R.2012 d.127, effective 7/2/2012.
See: 42 N.J.R. 3024(a), 43 N.J.R. 3300(a), 44 N.J.R. 1881(a).
In Step 1 of the Procedure for Using Table 1, deleted ", including decimals, if displayed" following the second occurrence of "sound"; and deleted Step 4 of the Procedure for Using Table 1.