{"data":{"id":"us/40-cfr-table-1-to-subpart-rrrrr-of-part-63","jurisdiction":"us","citation":"40 CFR Table 1 to Subpart RRRRR of Part 63","heading":"Table 1 to Subpart RRRRR of Part 63—Particulate Matter Emission Limits","body":"As required in § 63.9590(a), you must comply with each applicable particulate matter emission limit in the following table:\nIf your affected source is . . . and the affected source is categorized as . . . then you must comply with the flow-weighted mean concentration of particulate matter discharged to the atmosphere from the affected source, as determined using the procedures in § 63.9621(b), such that you must not exceed . . .\n1. Ore crushing and handling emission units Existing 0.008 grains per dry standard cubic foot (gr/dscf).\nNew 0.005 gr/dscf.\n2. Straight grate indurating furnace processing magnetite Existing New 0.01 gr/dscf. 0.006 gr/dscf.\n3. Grate kiln indurating furnace processing magnetite Existing New 0.01 gr/dscf. 0.006 gr/dscf.\n4. Grate kiln indurating furnace processing hematite Existing New 0.03 gr/dscf. 0.018 gr/dscf.\n5. Finished pellet handling emission units Existing New 0.008 gr/dscf. 0.005 gr/dscf.\n6. Ore dryer Existing New 0.052 gr/dscf. 0.025 gr/dscf.","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 RRRRR—National Emission Standards for Hazardous Air Pollutants: Taconite Iron Ore Processing"],"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":"747e258a81d48653137c24139c3d99ac26d1f1e293299a05e60243a6bd748e37","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.9652","next":"us/40-cfr-table-2-to-subpart-rrrrr-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}