(A) The following conduct, acts and conditions hereby are declared and defined nuisances and, when committed, performed, permitted to exist, created or permitted to be created by any person, firm, association or corporation, are hereby declared unlawful and prohibited, which nuisances so declared, defined and prohibited are the following:
(1) The making and creating of an unu- sually loud noise as heard, measured, registered, observed or recorded within the territorial limits of the Village, in the manner as described in division (B) below.
(2) The operation of any vehicle, machine or device which makes or creates an unusually loud noise as heard, measured, registered, observed or recorded within the territorial limits of the Village in the manner as described in division (B) below.
(3) The operation of any aircraft which makes or creates an unusually loud noise as heard, measured, registered, observed or recorded within the territorial limits of the Village, in the manner as described in division (B) below, provided that in those areas within the territorial limits of the Village, over, upon and in which easements or other vested interests have been acquired by purchase or agreement permitting thereon and thereover the flight of aircraft regardless of noise, nuisance or damages to the described servient areas, the presence of such unusually loud noise, affecting only those areas, shall be permitted and exempted from the operation of this section.
(B) For the purpose of determining and classifying any noise as an unusually loud noise herein declared unlawful and prohibited, the following tests and measurements shall be applied and be controlling:
(1) The noise shall be heard, measured, registered, observed or recorded within the territorial limits of the Village on ground level at least 75 feet from the source of the noise at a place in any public street which is built up with structures devoted to business, industry or dwelling houses situated at intervals of less than 100 feet for a distance of 1/4 mile or more.
(2) The noise shall be measured, registered, observed or recorded on a decibel meter of standard design and quality, such as General Radio Model 1565A, calibrated according to standards prescribed and provided by the Acoustical Society of America.
(3) A noise heard, measured, registered and recorded as described in divisions (B)(1) and (B)(2) above, more than 87 decibels in intensity, shall be and hereby is declared an “unusually loud noise” and is prohibited; however, if the noise is made or created by an aircraft in flight over that certain portion of the territorial limits of the Village, hereinafter defined and described as an airport runway extension, the noise so heard, measured, registered and recorded as in divisions (B)(1) and (B)(2) above described of more than 95 decibels in intensity shall be and hereby is declared an unusually loud noise and is prohibited.
(4) Definition. AIRPORT RUNWAY EXTENSION. As used in division (B)(3) above, the term is defined as a rectangular strip of land 1,200 feet in width and five miles in length at the end of and adjoining an existing runway of O'Hare Inter-national Airport, the longitudinal center line of which rectangular strip of land is the center line as extended of the existing runway on which it adjoins.
('73 Code, § 22-26) (Ord. 73-1053, passed 3-29-73) Penalty, see § 94.99