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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 252. Department of Environmental Quality |
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Chapter 100. Air Pollution Control |
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Subchapter 24. Particulate Matter Emissions From Grain, Feed or Seed Operations |
SECTION 252:100-24-4. Visible emissions (opacity) limit
Latest version.
- (a) Opacity limit. No person shall allow the discharge of any fumes, aerosol, mist, gas, smoke, vapor, particulate matter or any combination thereof exhibiting greater than 20% opacity. This requirement shall not apply to visible emissions exhibiting greater than 20% opacity emitted during short-term occurrences, which consist of not more than one six-minute period in any consecutive 60 minutes, not to exceed three such periods in any consecutive 24 hours, during which the average of any six-minute period shall not exceed 60% opacity.(b) Alternate opacity limit. The 20% opacity limit required under 252:100-24-4 (a) may be increased for particulates only provided that the owner or operator demonstrates to the satisfaction of the Air Quality Council at public hearing that those requirements listed in 252:100-25-4 (a) through (c) have been met.(c) Exceptions. Exceptions to the 20% opacity limit described in 252:100-24-4 (a) are provided as follows:(1) Visible emissions from loading-out (shipping) shall be no more than sixty-five percent (65%) opacity, and visible emissions from unloading (receiving) shall be no more than fifty-five percent (55%) opacity.(2) Emissions from pressurized vents or openings without control devices shall either be enclosed, exhausted through a control device, or shall be limited to no greater than ten percent (10%) opacity.(3) Emissions from non-pressurized vents or openings without control devices shall be limited to no greater than 10% opacity.