9VAC5-40-2420. Standard for sulfur oxides

No owner or other person shall cause or permit to be discharged into the atmosphere from any primary metal operation any sulfur oxide emissions in excess of the following limits: Copper Smelters: Y = 0.2X Zinc Smelters: Y = 0.564X 0.85 Lead Smelters: Y = 0.98X 0.77 where: X = total sulfur fed to the smelter in lb/hr. Y = allowable sulfur oxide emissions in lb/hr. Note: This provision in effect requires removal of about 90% of the input-sulfur to the smelter.