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Table 3 to Subpart III of Part 63—Compliance Requirements for Slabstock Foam Production Affected Sources

Compliance Requirements for Slabstock Foam Production Affected Sources

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Displayed edition2026-04-27
Last updated2026-04-27

Table 3 to Subpart III of Part 63—Compliance Requirements for Slabstock Foam Production Affected Sources

Emission pointEmission point compliance optionEmission, work practice, and equipment standardsMonitoringRecordkeepingReporting
Diisocyanate storage vessels § 63.1294(a)Vapor balance§ 63.1294(a)(1) and (1)(ii)§ 63.1294(a)(1)(i)§ 63.1307(a)(1) and (4)§ 63.1306(e)(5).
Carbon adsorber§ 63.1294(a)(2)§ 63.1303(a)(1), (3), and (4)§ 63.1307(a)(1), (3)(i), and (3)(iii)§ 63.1306(e)(3).
Carbon adsorber—alternative monitoring§ 63.1294(a)(2)§ 63.1303(a)(2), (3) and (4)§ 63.1307(a)(1), (3)(ii), and (3)(iii)§ 63.1306(e)(3).
Diisocyanate transfer pumps § 63.1294(b)Sealless pump§ 63.1294(b)(1)§ 63.1307 (b)(1)(i) and (2)
Submerged pump§ 63.1294(b)(2)(i) and (iii)§ 63.1294 (b)(2)(ii)§ 63.1307 (b)(1)(i), (2), and (3)§ 63.1306(e)(4).
Other components in diisocyanate service § 63.1294(c)N/A§ 63.1294(c)§ 63.1294(c)§ 63.1307 (b)(1)(i) and (3)§ 63.1306(e)(4).
ABAs § 63.1297N/A§ 63.1297§ 63.1307(e)
Equipment Cleaning § 63.1298N/A§ 63.1298§ 63.1307(e)

[63 FR 53996, Oct. 7, 1998, as amended at 79 FR 48090, Aug. 15, 2014]