{"data":{"id":"us-va/9vac5-40-7980","jurisdiction":"us-va","citation":"9VAC5-40-7980","heading":"Standard for carbon monoxide","body":"No owner or other person shall cause or permit to be discharged into the atmosphere from any affected facility any gases that contain carbon monoxide in excess of the following limits:\n\n1. For mass burn waterwall units: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n2. For mass burn refractory units: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n3. For mass burn rotary refractory units: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).\n\n4. For mass burn rotary waterwall units: 250 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).\n\n5. For modular starved air units: 50 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n6. For modular excess air units: 50 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n7. For refuse-derived fuel stokers: 200 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).\n\n8. For bubbling fluidized bed combustors: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n9. For circulating fluidized bed combustors: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n10. For pulverized coal/refuse-derived fuel mixed fuel-fired combustors: 150 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).\n\n11. For spreader stoker coal/refuse-derived fuel mixed fuel-fired combustors: 200 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).","path":["Title 9. Environment","Agency 5. State Air Pollution Control Board","Chapter 40. Existing Stationary Sources","Part II. Emission Standards","Article 54. Emission Standards for Large Municipal Waste Combustors (Rule 4-54)"],"source_url":"https://law.lis.virginia.gov/admincode/title9/agency5/chapter40/section7980/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:48:20Z","sha256":"1bcc660b6d143cdbb44e7895ee870fa5ce5a7151114287a89f98a3423088a356","source_id":"us-va-vac","stale":false,"prev":"us-va/9vac5-40-7970","next":"us-va/9vac5-40-7990"},"notice":"GroundRules: Original legal text. Not legal advice."}