Acoustic measurements and equipment to ascertain compliance with this chapter shall be in substantial conformity with standards and recommended practices established by professional organizations such as ANSI.
Instruments used to determine noise levels shall be of standard design, maintained in calibration and good working order, and the instrument manufacturer's instructions for use of the instrument shall be followed.
A. 
Measurements taken to determine compliance with this chapter shall be taken at any elevation and at any point beyond the boundary of the emitter noise zone or district and within the receptor's noise zone or district.
B. 
When taking measurements, a wind screen for the microphone shall be used when required. Traffic, aircraft and other transportation noise sources and other background noises shall not be considered in taking measurements except where such background noise interferes with the primary noise being measured.