Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. DDD, Tbl. 2 Table 2 to Subpart DDD of Part 63—Emissions Limits and Compliance Dates

Current as of January 02, 2025 | Updated by Findlaw Staff

If your source is a:	And you commenced construction:	Your emission limits are: ¹	And you must comply by: ²
1. Cupola	On or before May 8, 1997	0.10 lb PM per ton of melt	June 2, 2002.
2. Cupola	After May 8, 1997	0.10 lb PM per ton of melt	June 1, 1999.
3. Cupola	On or before May 8, 1997	a. 0.10 lb carbon monoxide (CO) per ton of melt,³ or	June 2, 2002.
		b. Reduction of uncontrolled CO by at least 99 percent ³
4. Cupola	After May 8, 1997 but on or before November 25, 2011	a. 0.10 lb CO per ton of melt,³ or	June 1, 1999.
		b. Reduction of uncontrolled CO by at least 99 percent.³
5. Closed-top cupola	On or before November 25, 2011	3.4 lb of carbonyl sulfide (COS) per ton melt	July 30, 2018.
6. Closed-top cupola	After November 25, 2011	0.062 lb of COS per ton melt	July 29, 2015.⁴
7. Open-top cupola	On or before November 25, 2011	6.8 lb of COS per ton melt	July 30, 2018.
8. Open-top cupola	After November 25, 2011	3.2 lb of COS per ton melt	July 29, 2015.⁴
9. Cupola using slag as a raw material	On or before November 25, 2011	0.16 lb of hydrogen fluoride (HF) per ton melt	July 30, 2018.
		0.44 lb of hydrogen chloride (HCl) per ton melt.
10. Cupola using slag as a raw material	After November 25, 2011	0.015 lb of HF per ton melt	July 29, 2015.⁴
		0.012 lb of HCl per ton melt.
11. Cupola not using slag as a raw material	On or before November 25, 2011	0.13 lb of HF per ton melt	July 30, 2018.
		0.43 lb of HCl per ton melt.
12. Cupola not using slag as a raw material	After November 25, 2011	0.018 lb of HF per ton melt	July 29, 2015.⁴
		0.015 lb of HCl per ton melt.
17. Curing oven	On or before May 8, 1997	a. 0.06 lb of formaldehyde per ton of melt,³ or	June 2, 2002.
		b. Reduction of uncontrolled formaldehyde by at least 80 percent.³
18. Curing oven	After May 8, 1997 but before November 25, 2011	a. 0.06 lb of formaldehyde per ton of melt,³ or	June 1, 1999.
		b. Reduction of uncontrolled formaldehyde by at least 80 percent.³
19. Combined drum collection/curing operation	On or before November 25, 2011	0.17 lb of formaldehyde per ton of melt	July 30, 2018.
		0.28 lb of methanol per ton melt.
		0.85 lb of phenol per ton melt.
20. Combined drum collection/curing operation	After November 25, 2011	0.17 lb of formaldehyde per ton of melt	July 29, 2015.⁴
		0.28 lb of methanol per ton melt.
		0.85 lb of phenol per ton melt.
21. Combined horizontal collection/curing operation	On or before November 25, 2011	0.63 lb of formaldehyde per ton of melt	July 30, 2018.
		0.049 lb of methanol per ton melt.
		0.12 lb of phenol per ton melt.
22. Combined horizontal collection/curing operation	After November 25, 2011	0.63 lb of formaldehyde per ton of melt	July 29, 2015.⁴
		0.049 lb of methanol per ton melt.
		0.12 lb of phenol per ton melt.
23. Combined vertical collection/curing operation	On or before November 25, 2011	2.4 lb of formaldehyde per ton melt	July 30, 2018.
		0.92 lb of methanol per ton melt.
		0.71 lb of phenol per ton melt.
24. Combined vertical collection/curing operation	After November 25, 2011	2.4 lb of formaldehyde per ton melt	July 29, 2015.⁴
		0.92 lb of methanol per ton melt.
		0.71 lb of phenol per ton melt.

¹ The numeric emissions 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 emissions limit does not apply after July 30, 2018.

⁴ Or upon initial startup, whichever is later.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. DDD, Tbl. 2 Table 2 to Subpart DDD of Part 63—Emissions Limits and Compliance Dates - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-pt-40-63-subpt-ddd-tbl-2/

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