Okla. Admin. Code § 252:100-24-4

Current through Vol. 42, No. 1, September 16, 2024

Section 252:100-24-4 - Visible emissions (opacity) limit

(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.

Okla. Admin. Code § 252:100-24-4

Added at 12 Ok Reg 353, eff 11-17-94 (emergency); Added at 12 Ok Reg 1621, eff 7-1-95; Amended at 13 Ok Reg 815, eff 8-21-95 (emergency); Amended at 13 Ok Reg 1951, eff 7-1-96; Amended at 16 Ok Reg 1370, eff 6-1-99; Amended at 25 Ok Reg 2223, eff 7-11-08