40 C.F.R. § 63.1662-63 app Table 4 to Subpart FFFF of Part 63
As required in § 63.2470 , you must meet each emission limit in the following table that applies to your storage tanks:
| 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 [GREATER THAN EQUAL TO]76.6 kilopascals | i. Reduce total HAP emissions by [GREATER THAN EQUAL TO]95 percent by weight or to [LESS THAN EQUAL TO]20 ppmv of TOC or organic HAP and [LESS THAN EQUAL TO]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. Comply with the requirements in § 63.2450(e)(4) , as applicable; and 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.1 | ||
| b. The maximum true vapor pressure of total HAP at the storage temperature is [LESS THAN]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 [GREATER THAN EQUAL TO]95 percent by weight or to [LESS THAN EQUAL TO]20 ppmv of TOC or organic HAP and [LESS THAN EQUAL TO]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. Comply with the requirements in § 63.2450(e)(4) , as applicable; and 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.1 | ||
| 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. |
| 3. Storage tank of any capacity and vapor pressure | Beginning no later than the compliance dates specified in § 63.2445(i) , the stored liquid contains ethylene oxide such that the storage tank is considered to be in ethylene oxide service as defined in § 63.2550 | Comply with the applicable emission limits specified in items 1 and 2 of this Table, and also: i. Reduce emissions of ethylene oxide by venting emissions through a closed-vent system to a flare; or ii. Reduce emissions of ethylene oxide by venting emissions through a closed-vent system to a control device that reduces ethylene oxide by [GREATER THAN EQUAL TO]99.9 percent by weight, or to a concentration [LESS THAN]1 ppmv for each storage tank vent. |
1 Beginning no later than the compliance dates specified in § 63.2445(g) , any flare using fuel gas from a fuel gas system, of which 50 percent or more of the fuel gas is derived from an MCPU that has processes and/or equipment in ethylene oxide service or that produces olefins or polyolefins, as determined on an annual average basis, must be in compliance with § 63.2450(e)(5) . For purposes of compliance, an MCPU that "produces olefins or polyolefins" includes only those MCPUs that manufacture ethylene, propylene, polyethylene, and/or polypropylene as a product. By-products and impurities as defined in § 63.101 , as well as wastes and trace contaminants, are not considered products.
40 C.F.R. 63.1662-63 app Table 4 to Subpart FFFF of Part 63