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Table 1 to Subpart TTTT of Part 63—Leather Finishing HAP Emission Limits for Determining the Allowable HAP Loss

Leather Finishing HAP Emission Limits for Determining the Allowable HAP Loss

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  3. Title 40
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  5. Chapter I
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  7. Part 63
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  9. Subpart TTTT
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  11. Subject Group Other Requirements and Information
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  13. Appendix Table 1 to Subpart TTTT of Part 63
CorpusDaily eCFR
Displayed edition2026-04-27
Last updated2026-04-27

Table 1 to Subpart TTTT of Part 63—Leather Finishing HAP Emission Limits for Determining the Allowable HAP Loss

As required in §§ 63.5305 and 63.5340(b), you must meet the appropriate emission limits in the following table:

Type of Leather Product Process OperationHAP Emission Limit (pounds of HAP loss per 1,000 square feet of leather processed)
Existing

sources		New

sources
1. Upholstery Leather (≥4 grams add-on/square feet)2.60.5
2. Upholstery Leather (<4 grams add-on/square feet)6.82.5
3. Water-resistant (≥5,000 Maeser Flexes)/Specialty Leather5.64.9
4. Nonwater-resistant Leather (<5,000 Maeser Flexes)3.72.1