Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. FFFF, Tbl. 5 Table 5 to Subpart FFFF of Part 63—Emission Limits and Work Practice Standards for Transfer Racks

1. Group 1 transfer rack

a. Reduce emissions of total organic HAP by ≥98 percent by weight or to an outlet concentration ≤20 ppmv as organic HAP or TOC by venting emissions through a closed-vent system to any combination of control devices (except a flare); or

b. Reduce emissions of total organic HAP by venting emissions through a closed-vent system to a flare; or

c. Comply with the requirements in § 63.2450(e)(4), as applicable; and reduce emissions of total organic HAP by venting emissions to a fuel gas system or process in accordance with § 63.982(d) and the requirements referenced therein; ¹ or

d. Use a vapor balancing system designed and operated to collect organic HAP vapors displaced from tank trucks and railcars during loading and route the collected HAP vapors to the storage tank from which the liquid being loaded originated or to another storage tank connected by a common header.

2. Halogenated Group 1 transfer rack vent stream for which you use a combustion device to control organic HAP emissions

a. Use a halogen reduction device after the combustion device to reduce emissions of hydrogen halide and halogen HAP by ≥99 percent by weight, to ≤0.45 kg/hr, or to ≤20 ppmv; or

b. Use a halogen reduction device before the combustion device to reduce the halogen atom mass emission rate to ≤0.45 kg/hr or to a concentration ≤20 ppmv.