9-404.070 - NOISE MEASUREMENT

Noise shall be measured with a sound level meter that meets the standards of the American National Standards Institute. Noise levels shall be measured in decibels (dBA) on a sound level meter using the A- weighted filter network. Exterior noise shall be measured at the lot line. Interior noise shall be measured in the center of a habitable room with an exterior window on the side of the building with the loudest ambient exterior noise. All noise measurements shall be made when there is no noise source present inside the room at a point five feet above the floor level. A calibration check of the instrument shall be made at the time any noise measurement is made. Excluded from these standards are occasional sounds generated by the movement of railroad equipment or warning devices.