Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. NNNNN, Tbl. 4 Table 4 to Subpart NNNNN of Part 63—Initial Compliance With Emission Limitations and Work Practice Standards

1. HCl process vent and each HCl storage tank and HCl transfer operation for which you are conducting a performance test

a. In Table 1 to this subpart

i. The average percent reduction of HCl and Cl₂ (if applicable), measured over the period of the performance test conducted according to Table 3 of this subpart and determined in accordance with § 63.9020(b), is greater than or equal to the applicable percent reduction emission limitation specified in Table 1 of this subpart; or

ii. The average HCl and Cl₂ (if applicable) concentration, measured over the period of the performance test conducted according to Table 3 of this subpart, is less than or equal to the applicable concentration emission limitation specified in Table 1 of this subpart.

2. HCl storage tank and HCl transfer operation for which you are preparing a design evaluation in lieu of conducting a performance test

a. In Table 1 to this subpart

i. The percent reduction of HCl, demonstrated by a design evaluation prepared in accordance with § 63.9020(c), is greater than or equal to the applicable percent reduction emission limitation specified in Table 1 of this subpart; or

ii. The HCl concentration, demonstrated by a design evaluation prepared in accordance with § 63.9020(c), is less than or equal to the applicable concentration emission limitation specified in Table 1 of this subpart.

3. Leaking equipment

a. In Table 1 to this subpart

i. You certify in your Notification of Compliance Status that you have developed and implemented your LDAR plan and submitted it to the Administrator for comment only.