Particulate Matter Emission Limits

As required in § 63.9590(a), you must comply with each applicable particulate matter emission limit in the following table: If 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 . . . 1. Ore crushing and handling emission units Existing 0.008 grains per dry standard cubic foot (gr/dscf). New 0.005 gr/dscf. 2. Straight grate indurating furnace processing magnetite Existing New 0.01 gr/dscf. 0.006 gr/dscf. 3. Grate kiln indurating furnace processing magnetite Existing New 0.01 gr/dscf. 0.006 gr/dscf. 4. Grate kiln indurating furnace processing hematite Existing New 0.03 gr/dscf. 0.018 gr/dscf. 5. Finished pellet handling emission units Existing New 0.008 gr/dscf. 0.005 gr/dscf. 6. Ore dryer Existing New 0.052 gr/dscf. 0.025 gr/dscf. [68 FR 61888, Oct. 30, 2003, as amended at 89 FR 16438, Mar. 6, 2024]