(a) Tennessee submitted a source-specific SIP revision to EPA on June 29, 2021, regarding the Packaging Company of America's Highway 57, Counce, Tennessee facility, along with a commitment to modify the provisions at Tennessee Air Pollution Control Regulation 1200-03-27.12(11) to specify allowable non-Part 75 permissible alternative monitoring and reporting methodologies for large industrial non-EGUs subject to the NOX SIP Call. EPA conditionally approved the June 29, 2021, SIP revision in an action published in the Federal Register on February 10, 2023. If Tennessee fails to meet its commitment by February 12, 2024, the conditional approval will become a disapproval on February 12, 2024.

(b) Tennessee submitted a source-specific SIP revision to EPA on August 11, 2021, regarding the Eastman Chemical Company's Kingsport, Tennessee facility, along with a commitment to modify the provisions at Tennessee Air Pollution Control Regulation 1200-03-27.12(11) to specify allowable non-Part 75 permissible alternative monitoring and reporting methodologies for large industrial non-EGUs subject to the NOX SIP Call. EPA conditionally approved the August 11, 2021, SIP revision in an action published in the Federal Register on March 8, 2023. If Tennessee fails to meet its commitment by March 8, 2024, the conditional approval will become a disapproval on March 8, 2024.

[87 FR 8772, Fen. 10, 2022, as amended at 88 FR 14278, Mar. 8, 2023]