StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
Coating categoryVOHAP limits a, b, c
Grams/liter coating (minus water and exempt compounds)Grams/liter solids d
t ≥4.5 °Ct <4.5 °C e
General use340 | 571 | 728
Specialty: | |
Air flask340 | 571 | 728
Antenna530 | 1,439 |
Antifoulant400 | 765 | 971
Heat resistant420 | 841 | 1,069
High-gloss420 | 841 | 1,069
High-temperature500 | 1,237 | 1,597
Inorganic zinc high-build340 | 571 | 728
Military exterior340 | 571 | 728
Mist610 | 2,235 |
Navigational aids550 | 1,597 |
Nonskid340 | 571 | 728
Nuclear420 | 841 | 1,069
Organic zinc360 | 630 | 802
Pretreatment wash primer780 | 11,095 |
Repair and maint. of thermoplastics550 | 1,597 |
Rubber camouflage340 | 571 | 728
Sealant for thermal spray aluminum610 | 2,235 |
Special marking490 | 1,178 |
Specialty interior340 | 571 | 728
Tack coat610 | 2,235 |
Undersea weapons systems340 | 571 | 728
Weld-through precon. primer650 | 2,885 |

a The limits are expressed in two sets of equivalent units. Either set of limits may be used for the compliance procedure described in § 63.785(c)(1), but only the limits expressed in units of g/L solids (nonvolatiles) shall be used for the compliance procedures described § 63.785(c) (2) through (4).

b VOC (including exempt compounds listed as HAP) shall be used as a surrogate for VOHAP for those compliance procedures described in § 63.785(c) (1) through (3).

c To convert from g/L to lb/gal, multiply by (3.785 L/gal)(1/453.6 lb/g) or 1/120. For compliance purposes, metric units define the standards.

d VOHAP limits expressed in units of mass of VOHAP per volume of solids were derived from the VOHAP limits expressed in units of mass of VOHAP per volume of coating assuming the coatings contain no water or exempt compounds and that the volumes of all components within a coating are additive.

e These limits apply during cold-weather time periods, as defined in § 63.782. Cold-weather allowances are not given to coatings in categories that permit less than 40 percent volume solids (nonvolatiles). Such coatings are subject to the same limits regardless of weather conditions.

[60 FR 64336, Dec. 15, 1995, as amended at 61 FR 66228, Dec. 17, 1996; 76 FR 72070, Nov. 21, 2011]