(A) Established measurement. Notwithstanding anything else contained herein, or within any other ordinance of the City of LaSalle, the maximum permissible sound pressure levels not otherwise prohibited by any other ordinance of the City of LaSalle of any continuous source of sound shall be as herein established for the time period and district listed in Table A of this section. This includes, but is not limited to, sound from such activities as production, processing, cleaning, servicing, testing, operating or repairing either vehicles, materials, goods, products or devices. Sound pressure levels in excess of those established for the districts of the city, in times herewith listed, shall constitute prima facie evidence that such sound in an unnecessary noise. Sound pressure levels shall be measured at the approximate location of the property line or the boundary of the public way, at a height of at least 4 feet above the immediate surroundings surface, on a sound level meter of standard design and operated on the “A” weighting network.
TABLE A
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Sound pressure level limit dbA
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District | Day (7:00 a.m. - 10:00 p.m.) | Night (10:00 p.m. - 7:00 a.m.) |
Residential | 65 | 55 |
Commercial | 70 | 65 |
Industrial | 80 | 80 |
(B) Measurement in more than 1 district. When a noise source can be identified and its noise measured in more than 1 district, the sound pressure level limits of the most restrictive district shall apply.
(C) Sound emitting from any single unit property shall not be plainly audible at any point beyond the lot line of that property.
(D) Sound emitting from inside any dwelling unit of a multi-unit structure shall not be plainly audible beyond the walls of that dwelling unit.
(E) Sound emitting from elsewhere within, or outdoors upon the property of a multi-unit structure shall not be plainly audible inside any dwelling unit of that structure, nor at any point beyond the lot lines of that property.
(F) Sound emitting from any other location shall not be plainly audible at any point more than 30 feet in any direction from the sound source.
(G) Sound limits in decibels (dbA) during times other than quiet hours.
(1) Sound emitting from any single-unit property shall not exceed 65 dbA at any 1 point beyond the lot line of that property.
(2) Sound emitting from inside any dwelling unit of a multi-unit structure shall not exceed 55 dbA beyond the walls of that dwelling unit.
(3) Sound emitting from elsewhere within or outdoors upon the property of a multi-unit structure shall not exceed 55 dbA inside any dwelling unit of that structure, nor 65 dbA beyond the lot lines of the structure’s property.
(4) Sound emitting from any other location shall not exceed 65 dbA at any 1 point more than 30 feet in any direction from the sound source.
(H) For the purpose of this subchapter, the term “residential district” shall consist of the same areas as the areas determined and designated on the City of LaSalle zoning map as R-l and R-2, Single-Family Dwelling District, R-3, Two-Family Dwelling District, and R-4, Multiple-Dwelling District; “commercial district” shall consist of the same area as the areas determined and designated on the City of LaSalle zoning map as (R-l, C-2 and C-3 Commercial) and “industrial district” shall consist of the same areas as the areas determined and designated on the City of LaSalle zoning map as M-l Light Industrial District and M-2 Heavy Industrial District.
(Ord. 1119, passed 11-17-1986; Am. Ord. 2254, passed 12-13-2010) Penalty, see § 91.99