§ 22-171. Definitions.

The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:

Blasting means the practice or occupation of rending heavy masses, especially of rock, by means of explosives, as in oil well drilling, quarrying and construction.

Class A blasting means ongoing mining and excavating related blasting.

Class B blasting means general blasting for purposes other than mining.

Decibel (db) means a unit of measure, on a logarithmic scale to the base 10, of the ratio of the magnitude of a particular sound pressure to a standard reference pressure which, for purposes of this article, shall be 20 micronnewtons per square meter (uN/m ).

General blasting means blasting of a singular nature, not intended as a continual part of operations.

Impulsive sound means either a single pressure peak of a single burst (multiple pressure peaks separated by intervals no greater than one-tenth of a second) for a total duration of no more than four seconds.

Ongoing mining and excavating related blasting means the blasting related operation has been in existence for six months or longer, or will be in operation for six months or longer, where explosives are used in the general course of operations.

Property-line-noise-source means any equipment or facility, or combination thereof, which operates within any land use. Such equipment or facility, or combination thereof, must be capable of emitting sound beyond the property line of the land on which operated.

Vibration means elastic oscillatory motion of the ground or structure located thereon of a transient or steady-state nature described by displacement, velocity, or acceleration of a particle or structure with respect to a given reference point.

(Code 1978, § 16-101; Ord. No. 538, art. I(16-101), 11-5-2001)

Cross reference

Definitions generally, § 1-2.