{"data":{"id":"us-va/9vac5-30-80","jurisdiction":"us-va","citation":"9VAC5-30-80","heading":"Lead","body":"A. The primary and secondary ambient air quality standard for lead and its compounds is 1.5 micrograms per cubic meter, maximum arithmetic mean averaged over a calendar quarter, measured as elemental lead by a reference method based on Appendix G of 40 CFR Part 50, or by an equivalent method.\n\nB.  The standards set forth in subsection A of this section shall remain applicable to all areas notwithstanding the ambient air quality standard in subsection C of this section. The lead standard set forth in subsection A of this section shall no longer apply to an area one year after the effective date of the designation of that area, pursuant to § 107 of the federal Clean Air Act, for the lead ambient air quality standard set forth in subsection C of this section.\n\nC. The primary and secondary ambient air quality standard for lead and its compounds is 0.15 micrograms per cubic meter, maximum arithmetic mean averaged over a three-month period, measured as lead either by (i) a reference method based on Appendix G of 40 CFR Part 50 and designated in accordance with 40 CFR Part 53; or (ii) an equivalent method designated in accordance with 40 CFR Part 53. The primary and secondary ambient air quality standards for lead are met when the maximum arithmetic three-month mean concentration for a three-year period, as determined in accordance with Appendix R of 40 CFR Part 50, is less than or equal to 0.15 micrograms per cubic meter.","path":["Title 9. Environment","Agency 5. State Air Pollution Control Board","Chapter 30. Ambient Air Quality Standards"],"source_url":"https://law.lis.virginia.gov/admincode/title9/agency5/chapter30/section80/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:48:03Z","sha256":"314c07eb0f213fdb73bd58c21e0c3b6141a6eee867cffa832b8b25e46a8bab49","source_id":"us-va-vac","stale":false,"prev":"us-va/9vac5-30-70","next":"us-va/9vac5-40-10"},"notice":"GroundRules: Original legal text. Not legal advice."}