§ 21-241. Noise.

(a)

Intent. The intent of this section is to recognize the right of mining operations and manufacturing industries to maintain operations of current facilities during typical first and second shift hours, while promoting an environment free from noise that jeopardizes the aesthetic quality of life for the general public.

(b)

Applicability. Regardless of zoning district, all existing uses in the mining and manufacturing division of the Standard Industrial Classification (SIC) and those seeking conditional use approval in the transportation, communications, electric, gas, sanitary services and services divisions of section 21-113, the table of uses, shall be subject to the decibel based standards of this section.

(c)

Sound level measurement. The sound level meter used in the enforcement of this section shall be comply with ANSI S1.4-1983 requirements or the latest approved version thereof, with calibration and measurement procedures as specified in the "Technical Documentation Manual for the 2237 Controller, Integrating Sound Level Meter" using the A-weighting scale set on slow response for a preset period of eight (8) minutes.

(d)

Maximum permitted sound levels. The maximum permitted sound levels for the uses prescribed in subsection (b), shall be obtained at the apparent property line of the noise producer/source and not be in excess of the following decibels during the given time periods:

(1)

7:00 a.m.—11:00 p.m. not to exceed seventy (70) decibels.

(2)

11:00 p.m.—7:00 a.m. not to exceed sixty-five (65) decibels.

(Ord. of 1-19-98, § XI; Ord. of 5-21-01(1))