No person shall build, erect, install, or use any article, machine equipment, or other contrivance, the sole purpose of which is to dilute or conceal an emission without resulting in a reduction in the total release of air contaminants to the atmosphere. Increase in stack height or constriction so as to increase stack exit velocity of gases shall not constitute a violation of this section.
(Prior Code, § 102.113) Penalty, see § 95.999