Visible emissions (opacity) and particulates

(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) Alternative opacity limit. The 20% opacity limit as required under 252:100-23-4(a) may be increased for particulates only provided that the owner or operator demonstrates to the satisfaction of the Air Quality Advisory Council at public hearing that those requirements listed in 252:100-25-4(a) through (c) have been met. (c) PM10-10 emissions limit. No cotton gin shall be operated so as to cause or contribute to a violation of the PM10-10 national ambient air quality standards or any other national ambient air quality standard established in 252:100-3. 17 SUBCHAPTER 24. PARTICULATE MATTER EMISSIONS FROM GRAIN, FEED OR SEED OPERATIONS