(A) Statement of purpose.
(1) The intent of the M-2 district is to permit certain industrial uses to locate in desirable areas of the city, which uses are primarily of a manufacturing, assembling, and fabricating character, including large scale or specialized industrial operations requiring good access by road or railroad, and needing special sites or public and utility services.
(2) Reasonable regulations apply to users in this district so as to permit the location of industries which will not cause adverse effects on residential and commercial areas in the city.
(B) Principal permitted uses. In the M-2 district, no uses shall be permitted, unless otherwise provided in this ordinance, except the following:
(1) All principal permitted uses and permitted uses after special approval in the M-1 district subject to the terms and conditions imposed therein; and
(2) Industrial establishments:
(a) The assembly and manufacture of automobiles, automobile bodies, parts, and accessories, cigars and cigarettes, electrical fixtures, batteries, and other electrical apparatus, and hardware;
(b) Processing, refining, or storage of food and foodstuffs;
(c) Breweries, bumpshops, distilleries, machine shops, metal buffing, plastering and polishing shops, millwork lumber and planing mills, painting and sheet metal shops, undercoating and rustproofing shops, and welding shops;
(d) Automobile bumpshops, tire vulcanizing and recapping shops;
(e) Accessory buildings and uses customarily incidental to the above permitted principal uses, including living quarters of a watchperson or caretaker; and
(f) Any other uses similar to any of the above principal permitted uses.
(C) Permitted uses after special approval. The following uses may be permitted subject to the conditions hereinafter imposed and subject further to the review and approval of the City Planning Commission pursuant to § 157.177:
(1) Open storage yards of construction contractor’s equipment and supplies, building materials, sand, gravel, or lumber.
(a) These uses shall be located at least 200 feet from any residential district.
(b) If it is deemed essential by the Planning Commission to prevent loose materials from blowing into adjacent properties, a fence, tarpaulin, or obscuring wall of dimensions and materials specified by the Planning Commission shall be required around the stored material.
(c) No required yard spaces shall be used for the storage of equipment or material.
(2) Junk yards; and
(3) Mining, excavating, or other removal of sand, earth, minerals, or other material naturally found in the earth.
(D) Industrial performance standards. Any use established in the M-2 district shall not be permitted to carry on any activity or operation or use of land, building, or equipment that produces irritants to the sensory perceptions greater than the measures herein established which are hereby determined to be maximum permissible hazard to humans or human activity.
(1) Noise. No operation or activity shall be carried out in the M-2 district which causes or creates measurable noise levels exceeding the maximum sound intensity levels prescribed below, as measured on or beyond the boundary lines of the district.
(a) A sound level meter and an octave band analyzer shall be used to measure the intensity and frequency of the sound or noise levels encountered. Sounds of very short duration, which cannot be measured accurately with the sound level meter, shall be measured by an impact noise and analyzer; and the measurements so obtained may be permitted to exceed the maximum levels provided in the Table 157.047A by no more than 5 decibels.
(b) For the purpose of this ordinance, the following definition shall apply unless the context clearly indicates or requires a different meaning.
IMPACT NOISES. Those noises whose peak values are more than 7 decibels higher than the values indicated on the sound level meter.
(c) Where street traffic noises directly adjacent to the property line exceed these maximum permitted levels, the intensity levels permitted may then exceed those levels specified in the table but may not exceed the level of the subject adjacent street traffic noises.
(d) In addition, sounds of an intermittent nature, or characterized by high frequencies, which the Zoning Administrator deems to be objectionable in adjacent districts, shall be controlled so as not to generate a nuisance in adjacent districts, even if the decibel measurement does not exceed that specified in the table.
Table 157.047A: Maximum Permitted Sound Intensity Levels in Decibels (Post-1960 Preferred Frequencies) | |
Center Frequency (Cycles Per Second) | M-2 |
Table 157.047A: Maximum Permitted Sound Intensity Levels in Decibels (Post-1960 Preferred Frequencies) | |
Center Frequency (Cycles Per Second) | M-2 |
31.5 | 77 |
63.0 | 73 |
125.0 | 67 |
250.0 | 62 |
500.0 | 55 |
1,000.0 | 51 |
2,000.0 | 44 |
4,000.0 | 37 |
8,000.0 | 33 |
(2) Other performance standards. All other performance standards relative to smoke, dust, dirt, and fly ash; glare and heat; odor; vibration; fire and safety hazards; sewage wastes; gases; electromagnetic radiation; and drifting and airborne matter shall be in conformance with the industrial performance standards of the M-1 district as provided in § 157.046(D).
(E) Site plan review. For all uses permitted in the M-2 district, including structural restoration, reconstruction, extension, substitution, or renovation of existing uses, a site plan of the entire building premises shall be submitted for review and approval in accordance with § 157.092.
(F) Area, height, and placement requirements. Area, height, and placement requirements, unless otherwise specified, are as provided in Appendix A, Schedule of Regulations.