Current through Register Vol. XLI, No. 50, December 13, 2024
Section 45-27-6 - Wastewater from Chemical Processing Units6.1. Owners and operators of chemical processing units and/or wastewater treatment systems subject to this rule shall employ BAT to remove and control or destroy toxic air pollutants from wastewater at the source and/or apply BAT at the wastewater treatment plant to prevent or control the discharge to toxic air pollutants resulting from air stripping or evaporation: Provided, that this provision shall not be more stringent than any specifically applicable federal regulation or standard.6.2. In quantifying total plant or facility emissions of a toxic air pollutant pursuant to determining the applicability of this rule under Section 3.1, emissions of a toxic air pollutant resulting from the discharge of the toxic air pollutant to wastewater streams and the subsequent treatment of wastewater shall be included. Emissions shall be determined by a method specified or approved by the Director.6.3. The Director may exempt wastewater treatment units, tanks, or equipment from the requirement for BAT if the owner or operator can demonstrate to the satisfaction of the Director that air stripping or volatilization and emission to the air of toxic air pollutants from such sources does not occur or is insignificant from the standpoint of emissions and/or impact upon public health.