{"data":{"id":"us-va/9vac5-40-2420","jurisdiction":"us-va","citation":"9VAC5-40-2420","heading":"Standard for sulfur oxides","body":"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:\n\nCopper Smelters: Y = 0.2X\n\nZinc Smelters: Y = 0.564X0.85\n\nLead Smelters: Y = 0.98X0.77\n\nwhere:\n\nX = total sulfur fed to the smelter in lb/hr.\n\nY = allowable sulfur oxide emissions in lb/hr.\n\nNote: This provision in effect requires removal of about 90% of the input-sulfur to the smelter.","path":["Title 9. Environment","Agency 5. State Air Pollution Control Board","Chapter 40. Existing Stationary Sources","Part II. Emission Standards","Article 18. Emission Standards for Primary and Secondary Metal Operations (Rule 4-18)"],"source_url":"https://law.lis.virginia.gov/admincode/title9/agency5/chapter40/section2420/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:48:07Z","sha256":"55fe20fdd38d979b6780215347453ff28099e3095acaaceca78155cb6b8c84f8","source_id":"us-va-vac","stale":false,"prev":"us-va/9vac5-40-2410","next":"us-va/9vac5-40-2430"},"notice":"GroundRules: Original legal text. Not legal advice."}