A. General: The following districts are intended to provide for a wide range of commercial and light industrial uses. However, any commercial or industrial use shall observe the following environmental performance standards:
1. Noise: All noise shall be muffled so as not to be objectionable due to intermittence, beat frequency, or shrillness, and, as measured at any property line, shall not exceed the most current noise regulations adopted by the Illinois pollution control board.
2. Smoke: The emission of smoke by any use shall be controlled so to be less dark in shade than that designated as no. 2 on the Ringelmann chart, published and used by the United States bureau of mines; provided, however, that smoke of a density equal to that designated as no. 2 on the Ringelmann chart may be permitted for not more than eight (8) minutes during any thirty (30) minute period and smoke of a density not exceeding that designated as no. 3 on the Ringelmann chart may be permitted for not more than six (6) minutes during any eight (8) hour period while starting or cleaning a fire.
3. Dust And Other Particulate Matter: The emission of dust, fly ash, and other particulate matter shall not exceed eighty five one hundredths (0.85) pound per one thousand (1,000) pounds of flue gas, measured at a convenient point in the stack and under conditions not exceeding fifty percent (50%) of excess air. The amount of solids in such gases shall be determined according to the test for dust separation apparatus of the American Society of Mechanical Engineers, revised and amended to date.
4. Odor: The emission of odorous matter in such quantity as to be offensive at a point along or outside any lot line shall not be permitted. In determining such quantities of offensive odors, table III (odor thresholds) in chapter 5 of the "Air Pollution Abatement Manual" (copyright 1951 by Manufacturing Chemists Association, Inc., Washington, DC) shall be used as a guide.
5. Glare And Heat: Any operation producing intense heat and glare shall be conducted within an enclosed building or with other effective screening in such manner as to be completely imperceptible from any point along or outside the lot lines. (Ord. 244, 6-10-2003)