40 CFR Table 4
Emission Limits for Storage Tanks
June 9, 2020
As required in §63.2470, you must meet each emission limit in the following table that applies to your storage tanks:
Open Table
| For each . . . | For which . . . | Then you must . . . |
|---|---|---|
| 1. Group 1 storage tank | a. The maximum true vapor pressure of total HAP at the storage temperature is ≥76.6 kilopascals | i. Reduce total HAP emissions by ≥95 percent by weight or to ≤20 ppmv of TOC or organic HAP and ≤20 ppmv of hydrogen halide and halogen HAP by venting emissions through a closed vent system to any combination of control devices (excluding a flare); or |
| ii. Reduce total organic HAP emissions by venting emissions through a closed vent system to a flare; or | ||
| iii. Reduce total HAP emissions by venting emissions to a fuel gas system or process in accordance with §63.982(d) and the requirements referenced therein. | ||
| b. The maximum true vapor pressure of total HAP at the storage temperature is <76.6 kilopascals | i. Comply with the requirements of subpart WW of this part, except as specified in §63.2470; or | |
| ii. Reduce total HAP emissions by ≥95 percent by weight or to ≤20 ppmv of TOC or organic HAP and ≤20 ppmv of hydrogen halide and halogen HAP by venting emissions through a closed vent system to any combination of control devices (excluding a flare); or | ||
| iii. Reduce total organic HAP emissions by venting emissions through a closed vent system to a flare; or | ||
| iv. Reduce total HAP emissions by venting emissions to a fuel gas system or process in accordance with §63.982(d) and the requirements referenced therein. | ||
| 2. Halogenated vent stream from a Group 1 storage tank | You use a combustion control device to control organic HAP emissions | Meet one of the emission limit options specified in Item 2.a.i or ii. in Table 1 to this subpart. |
[68 FR 63888, Nov. 10, 2003, as amended at 71 FR 40340, July 14, 2006]
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