{"data":{"id":"us/40-cfr-figure-1-to-subpart-qqq-of-part-63","jurisdiction":"us","citation":"40 CFR Figure 1 to Subpart QQQ of Part 63","heading":"Figure 1 to Subpart QQQ of Part 63—Data Summary Sheet for Determination of Average Opacity","body":"Figure 1 to Subpart QQQ of Part 63—Data Summary Sheet for Determination of Average Opacity\nClock time Number of converters blowing Converter aisle activity Average opacity for 1-minute interval (percent) Visible emissions interference observed during 1-minute interval? (yes or no) Average opacity for 1-minute interval blowing without visible emission interferences (percent)","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart QQQ—National Emission Standards for Hazardous Air Pollutants for Primary Copper Smelting"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"7375c7d1a316dea67f9941f0aff59c71eccfca3ffff88eb5f1cf612500114bf0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-4-to-subpart-qqq-of-part-63","next":"us/40-cfr-63.1500"},"notice":"GroundRules: Original legal text. Not legal advice."}