Definitions. As used in this section, the following terms shall have the meanings indicated:
American National Standards Institute or its successor bodies.
The sound pressure level as measured with a sound level meter using the A-weighting network, used to approximate the average human ear response to a range of sound frequencies.
On-site erection, fabrication, installation, alteration, demolition or removal of any structure, facility or addition thereto, including all related activities, including, but not limited to, clearing of land, earthmoving, blasting and landscaping.
A sound level in decibels determined using the A-weighting network of a sound level meter.
A unit of measure, on a logarithmic scale, of the ration or magnitude of a particular sound pressure to a standard reference pressure, which, for purposes of this chapter shall be 20 micropascals.
A public calamity, utility services failure or an exposure of any person or property to actual or immediate danger.
The work or activity that is needed to prevent or recover from an emergency, including but not limited to fire or burglar alarms and other emergency signaling devices and work to repair electric, gas, water, sewer or telephone services.
A single noise event or series of single noise events, which result in a high peak sound level of short duration (less than one second). Examples include, but are not limited to gun shots, blasting or hammering.
An oscillation in pressure in air.
In decibels, a weighted sound pressure level, determined by the use of metering characteristics and frequency weightings specified in ANSI S1.4-1983.
An instrument designed to detect and measure sound pressure levels and display this information in decibels in an analog or digital form. An instrument meeting the requirements of this chapter shall conform to the requirements of ANSI S1.4-1983, Type 1 or Type 2.