New Jersey Administrative Code
Title 7 - ENVIRONMENTAL PROTECTION
Chapter 29 - NOISE CONTROL
Subchapter 2 - PROCEDURES FOR THE DETERMINATION OF NOISE FROM STATIONARY SOURCES
Section 7:29-2.6 - Equipment

i. Measurements of continuous or impulse sound shall be made either with a Type 1 (Precision) or a Type 2 (General Purpose) sound level meter manufactured to the requirements of ANSI S1.4-1971 specification for sound level meters (see N.J.A.C. 7:29-2.12(a)2 ) or its successor.

ii. Measurements of sound by octave bands shall be made with a sound level meter with octave band frequency filter set that conforms to the requirements of Class II as specified in ANSI S1.11-1966 (R-1976) "specification for octave, half-octave, and third-octave band filter sets" (see N.J.A.C. 7:29-2.12(a)1 ) or its successor.

i. A wind screen, as recommended by the sound level meter manufacturer.

ii. A wind speed measuring instrument including a range of five to 15 miles per hour (2.2 to 6.7 meters per second) with plus or minus two miles per hour (plus or minus 0.9 meters per second) accuracy.

iii. Optional equipment including a flashlight or miner's lamp, a microphone extension cable, an extension pole with microphone holder, a headphone equipped with a plug to fit the sound level meter, a tape measure or an optical distance indicator for determining distance, a compass for determining direction or, alternatively, a suitable map of the vicinity, and a thermometer for determining ambient temperature.