Regulations last checked for updates: May 17, 2024

Title 40 - Protection of Environment last revised: May 15, 2024
All TitlesTitle 40Chapter IPart 63Subpart NNNAppendix - Table 2 to Subpart NNN of Part 63—Emissions Limits and Compliance Dates
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Appendix - Table 2 to Subpart NNN of Part 63—Emissions Limits and Compliance Dates
If your source is a: And you commenced construction: Your emission limits are: 1 And you must comply by: 2
1. Glass-melting furnaceOn or before March 31, 19970.5 lb PM per ton of glass pulled 3June 14, 2002.
2. Glass-melting furnaceAfter March 31, 1997 but on or before November 25, 20110.5 lb PM per ton of glass pulled 3June 14, 1999.
3. Glass-melting furnaceOn or before November 25, 20110.33 lb PM per ton of glass pulledJuly 31, 2017.
4. Glass-melting furnaceAfter November 25, 20110.33 lb PM per ton of glass pulledJuly 29, 2015. 4
5. Gas-fired glass-melting furnaceOn or before November 25, 20110.00025 lb chromium compounds per ton of glass pulledJuly 31, 2017.
6. Gas-fired glass-melting furnaceAfter November 25, 20110.00025 lb chromium compounds per ton of glass pulledJuly 29, 2015. 4
7. Rotary spin manufacturing lineOn or before March 31, 19971.2 lb formaldehyde per ton of glass pulled 5June 14, 2002.
8. Rotary spin manufacturing lineAfter March 31, 19970.8 lb formaldehyde per ton of glass pulled 5June 14, 1999.
9. Rotary spin manufacturing lineOn or before November 25, 20111.2 lb formaldehyde per ton of glass pulled 1.1 lb methanol per ton of glass pulledDecember 26, 2020.
10. Rotary spin manufacturing lineAfter November 25, 20110.8 lb formaldehyde per ton of glass pulled 0.65 lb methanol per ton of glass pulledDecember 26, 2017. 4
11. Flame-attenuation line manufacturing a heavy-density productAfter March 31, 1997, but on or before November 25, 20117.8 lb formaldehyde per ton of glass pulled 5June 14, 1999.
12. Flame-attenuation line manufacturing a pipe productOn or before March 31, 19976.8 lb formaldehyde per ton of glass pulled 5June 14, 2002.
13. Flame-attenuation line manufacturing a pipe productAfter March 31, 1997, but before November 25, 20116.8 lb formaldehyde per ton of glass pulled 5June 14, 1999.
14. Flame-attenuation line manufacturing an aerospace, air filtration, or pipe productOn or before November 25, 201127 lb formaldehyde per ton of glass pulled 8.9 lb methanol per ton of glass pulledDecember 26, 2020.
15. Flame-attenuation line manufacturing an aerospace, air filtration, or pipe productAfter November 25, 201118.0 lb formaldehyde per ton of glass pulled 4.0 lb methanol per ton of glass pulledDecember 26, 2017. 4
16. Flame-attenuation line manufacturing an HVAC productOn or before November 25, 20112.8 lb formaldehyde per ton of glass pulled 7.3 lb methanol per ton of glass pulled 0.4 lb phenol per ton of glass pulledDecember 26, 2020.
17. Flame-attenuation line manufacturing an HVAC productAfter November 25, 20112.4 lb formaldehyde per ton of glass pulled 1.5 lb methanol per ton of glass pulled 0.4 lb phenol per ton of glass pulledDecember 26, 2017. 4
18. Flame-attenuation line manufacturing an OEM productOn or before November 25, 20115.0 lb formaldehyde per ton of glass pulled 5.7 lb methanol per ton of glass pulled 31 lb phenol per ton of glass pulledDecember 26, 2020.
19. Flame-attenuation line manufacturing an OEM productAfter November 25, 20112.9 lb formaldehyde per ton of glass pulled 1.1 lb methanol per ton of glass pulled 22 lb phenol per ton of glass pulledDecember 26, 2017. 4

1 The numeric limits do not apply during startup and shutdown.

2 Existing sources must demonstrate compliance by the compliance dates specified in this table. New sources have 180 days after the applicable compliance date to demonstrate compliance.

3 This limit does not apply after July 31, 2017.

4 Or initial startup, whichever is later.

5 This limit does not apply after December 26, 2020.

[80 FR 45338, July 29, 2015, as amended at 82 FR 60885, Dec. 26, 2017]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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