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For . . . | You must meet the following emission limits . . . |
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1. Indurating furnaces constructed or reconstructed before May 15, 2023 | Hydrogen chloride emissions must not exceed 4.6 × 10 −2 lb/Long Ton of taconite pellets produced. |
Hydrogen fluoride emissions must not exceed 1.2 × 10 −2 lb/Long Ton of taconite pellets produced. | |
2. Indurating furnaces constructed or reconstructed on or after May 15, 2023 | Hydrogen chloride emissions must not exceed 4.4 × 10 −4 lb/Long Ton of taconite pellets produced |
Hydrogen fluoride emissions must not exceed 3.3 × 10 −4 lb/Long Ton of taconite pellets produced. |
[89 FR 16438, March 6, 2024]