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Table 5 to Subpart JJJ of Part 63—Group 1 Storage Vessels at New Affected Sources Producing the Listed Thermoplastics

Group 1 Storage Vessels at New Affected Sources Producing the Listed Thermoplastics

  1. CFR
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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 JJJ
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  11. Appendix Table 5 to Subpart JJJ of Part 63
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Displayed edition2026-04-27
Last updated2026-04-27

Table 5 to Subpart JJJ of Part 63—Group 1 Storage Vessels at New Affected Sources Producing the Listed Thermoplastics

ThermoplasticChemical aVessel capacity

(cubic meters)		Vapor pressure b (kilopascals)
ASA/AMSAN cStyrene/ acrylonitrile mixture≥3.78≥0.47
Acrylonitrile≥75.7≥1.62
SAN, continuous dAll chemicals≥2,271≥0.5 and <0.7
<151≥10
≥151≥0.7
Nitrile cAcrylonitrile≥13.25≥1.8
Polystyrene, continuous processesAll chemicals≥19.6 and <45.4≥7.48
≥45.4 and <109.8≥0.61
≥109.8≥0.53
ABS, continuous massStyrene≥45.43≥0.078
All other chemicals≥38 and <45.43≥13.1
≥45.43≥0.53
a Vessel capacity and vapor pressure criteria are specific to the listed chemical, to “all chemicals,” or to “all other chemicals,” as indicated.
b Maximum true vapor pressure of total organic HAP at storage temperature.
c The applicability criteria in Table 4 of this subpart shall be used for chemicals not specifically listed in this table (i.e., Table 5).
d The control level for the first two sets of applicability criteria are specified in 63.1314 as 90% and 98%, respectively. The control level for the third set of applicability criteria is the HON control level of 95%.

[64 FR 11553, Mar. 9, 1999]