40 CFR Part 63, Table 2
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| For . . . | You must meet the following emission limit | You have demonstrated compliance, if after following the requirements in § 63.7112 . . . |
|---|---|---|
| 1. All new and existing lime kilns and their associated coolers equipped with an FF or an ESP during each startup | Emissions must not exceed 15 percent opacity (based on startup period block average) | i. Installed, maintained, calibrated and operated a COMS as required by 40 CFR part 63, subpart A, General Provisions and according to PS-1 of appendix B to part 60 of this chapter, except as specified in § 63.7113(g)(2); ii. Collected the COMS data at a frequency of at least once every 15 seconds, determining block averages for each startup period and demonstrating for each startup block period the average opacity does not exceed 15 percent. |
| 2. All existing lime kilns and their associated coolers that have a wet scrubber during each startup | See item 2.b of table 3 of subpart AAAAA for emission limit | See item 1 of table 6 of subpart AAAAA for requirements for demonstrating compliance. |
| 3. All new and existing lime kilns and their associated coolers equipped with an FF or an ESP during shutdown | Emissions must not exceed 15 percent opacity (based on 6-minute average opacity for any 6-minute block period does not exceed 15 percent) | i. Installed, maintained, calibrated and operated a COMS as required by 40 CFR part 63, subpart A, General Provisions and according to PS-1 of appendix B to part 60 of this chapter, except as specified in § 63.7113(g)(2); ii. Collecting the COMS data at a frequency of at least once every 15 seconds, determining block averages for each 6-minute period and demonstrating for each 6-minute block period the average opacity does not exceed 15 percent. |
| 4. All existing lime kilns and their associated coolers that have a wet scrubber during shutdown | See item 2.b of table 3 of subpart AAAAA for emission limit | See item 1 of table 6 of subpart AAAAA for requirements for demonstrating compliance. |
[89 FR 96110, Dec. 4, 2024]