Code of Federal Regulations > Title 40 > Chapter I > Part 63 > Subpart O > Appendix - Table 2 to Subpart O of Part 63

Regulations last checked for updates: Nov 22, 2024

Title 40 - Protection of Environment last revised: Nov 20, 2024

Appendix - Table 2 to Subpart O of Part 63—Standards for ARVs

As required in § 63.362(d), for each ARV, you must meet the applicable standard in the following table:

For each . . .	For which . . .	You must . . .	You must comply with the standard . . .
1. Existing ARV	a. Facility EtO use is at least 10 tpy	i. Continuously reduce EtO emissions by 99 percent ¹	Until April 6, 2026.
	b. Facility EtO use is at least 30 tpy	i. Continuously reduce EtO emissions by 99.9 percent 2 3	No later than April 6, 2026.
	c. Facility EtO use is at least 10 tpy but less than 30 tpy	i. Continuously reduce EtO emissions by 99.6 percent 2 3	No later than April 6, 2026.
	d. Facility EtO use is less than 10 tpy	i. Continuously reduce EtO emissions by 99 percent 2 4	No later than April 5, 2027.
2. New ARV	a. Initial startup is on or before April 5, 2024, and facility EtO use is at least 10 tpy	i. Continuously reduce EtO emissions by 99.9 percent 2 5	No later than April 5, 2024.
	b. Initial startup is on or before April 5, 2024, and facility EtO use is less than 10 tpy	i. Continuously reduce EtO emissions by 99 percent 2 6	No later than April 5, 2024.
	c. Initial startup is after April 5, 2024, and facility EtO use is at least 10 tpy	i. Continuously reduce EtO emissions by 99.9 percent 2 5	Upon startup of the source.
	d. Initial startup is after April 5, 2024, and facility EtO use is less than 10 tpy	i. Continuously reduce EtO emissions by 99 percent 2 6	Upon startup of the source.

¹ The standard applies if the facility has met or exceeded the specified EtO use within any consecutive 12-month period after December 6, 1996.

² If using CEMS to determine compliance, this standard is based on a rolling 30-operating day average.

³ The standard applies if the facility has met or exceeded the specified EtO use within any consecutive 12-month period after April 7, 2025.

⁴ The standard applies if the facility has used less than 10 tpy of EtO within all consecutive 12-month periods after April 6, 2026.

⁵ The standard applies if the facility is expected to meet or exceed the specified EtO use within one year after startup. Afterwards, the standard applies if the facility has met or exceeded the specified EtO use within any consecutive 12-month period after startup.

⁶ The standard applies if the facility is not expected to meet or exceed 10 tpy of EtO use within one year after startup. Afterwards, the standard applies if the facility has used less than 10 tpy of EtO within all consecutive 12-month periods after startup.

authority: 42 U.S.C. 7401

source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.