Hydrogen Chloride and Hydrogen Fluoride Emission Limits for Indurating Furnaces

Table 3 to Subpart RRRRR of Part 63—Hydrogen Chloride and Hydrogen Fluoride Emission Limits for Indurating Furnaces [As required in § 63.9590(a), you must comply with each applicable hydrogen chloride and hydrogen fluoride emission limit in the following table:] For . . . You must meet the following emission limits . . . 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, Mar. 6, 2024]