{"data":{"id":"us/40-cfr-table-4-to-subpart-ttttt-of-part-63","jurisdiction":"us","citation":"40 CFR Table 4 to Subpart TTTTT of Part 63","heading":"Table 4 to Subpart TTTTT of Part 63—Continuous Compliance With Emission Limits","body":"As required in § 63.9923, you must demonstrate continuous compliance with the emission limits according to the following table:\nFor . . . You must demonstrate continuous compliance by . . .\n1. Each spray dryer stack a. Maintaining emissions of PM10 at or below 100 lbs/hr; and\nb. Maintaining emissions of hydrochloric acid at or below 200 lbs/hr; and\nc. Conducting subsequent performance tests at least twice during each term of your title V operating permit (at mid-term and renewal).\n2. Magnesium chloride storage bins scrubber stack a. Maintaining emissions of hydrochloric acid at or below 47.5 lbs/hr and 0.35 gr/dscf; and\nb. Maintaining emissions of PM10 at or below 2.7 lbs/hr and 0.016 gr/dscf; and\nc. Conducting subsequent performance tests at least twice during each term of your title V operating permit (at mid-term and renewal).\n3. Each melt/reactor system stack a. Maintaining emissions of PM10 at or below 13.1 lbs/hr; and\nb. Maintaining emissions of hydrochloric acid at or below 7.2 lbs/hr; and\nc. Maintaining emissions of chlorine at or below 100 lbs/hr; and\nd. Maintaining emissions of dioxins/furans at or below 36 ng TEQ/dscm corrected to 7% oxygen.\ne. Conducting subsequent performance test at least twice during each term of your title V operating permit (at mid-term and renewal).\n4. Each launder off-gas system stack a. Maintaining emissions of particulate matter at or below 37.5 lbs/hr; and\nb. Maintaining emissions of hydrochloric acid at or below 46.0 lbs/hr; and\nc. Maintaining emissions of chlorine at or below 26.0 lbs/hr; and\nd. Conducting subsequent performance tests at least twice during each term of your title V operating permit (at mid-term and renewal).","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 TTTTT—National Emissions Standards for Hazardous Air Pollutants for Primary Magnesium Refining"],"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":"17af7753e9871ea13904d06cd8a7918dedc62075226ddcd27537ca556b2dcc95","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-3-to-subpart-ttttt-of-part-63","next":"us/40-cfr-table-5-to-subpart-ttttt-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}