{"data":{"id":"us/40-cfr-table-3-to-subpart-dd-of-part-63","jurisdiction":"us","citation":"40 CFR Table 3 to Subpart DD of Part 63","heading":"Table 3 to Subpart DD of Part 63—Tank Control Levels for Tanks at Existing Affected Sources as Required by 40 CFR 63.685(b)(1)","body":"Tank design capacity (cubic meters) Maximum HAP vapor pressure of off-site material managed in tank (kilopascals) Tank control level\nDesign capacity less than 75 m3 Maximum HAP vapor pressure less than 76.6 kPa Level 1.\nDesign capacity less than 75 m3 Maximum HAP vapor pressure equal to or greater than 76.6 kPa Level 2, except that fixed roof tanks equipped with an internal floating roof and tanks equipped with an external floating roof as provided for in § 63.685(d)(1) and (2) shall not be used.\nDesign capacity equal to or greater than 75 m3 and less than 151 m3 Maximum HAP vapor pressure less than 27.6 kPa Level 1.\nMaximum HAP vapor pressure equal to or greater than 27.6 kPa Level 2.\nDesign capacity equal to or greater than 151 m3 Maximum HAP vapor pressure less than 5.2 kPa Level 1.\nMaximum HAP vapor pressure equal to or greater than 5.2 kPa Level 2.","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 DD—National Emission Standards for Hazardous Air Pollutants from Off-Site Waste and Recovery Operations"],"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":"1f1d8bd99cb6761deb615e6269cae71acd9fb415ab3ec762480bf3e30c5c5d14","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-2-to-subpart-dd-of-part-63","next":"us/40-cfr-table-4-to-subpart-dd-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}