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 Code of Federal Regulations (Last Updated: November 8, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter C - Air Programs
 Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories
 Subpart II - National Emission Standards for Shipbuilding and Ship Repair (Surface Coating)

  Table 2 to Subpart II of Part 63 - Volatile Organic HAP (VOHAP) Limits for Marine Coatings  

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  • Table 2 to Subpart II of Part 63 - Volatile Organic HAP (VOHAP) Limits for Marine Coatings

    Coating category VOHAP limitsa b c
    Grams/liter coating (minus water and exempt compounds) Grams/liter solidsd
    t ≥4.5 °C t <4.5 °Ce
    General use 340 571 728
    Specialty:
    Air flask 340 571 728
    Antenna 530 1,439
    Antifoulant 400 765 971
    Heat resistant 420 841 1,069
    High-gloss 420 841 1,069
    High-temperature 500 1,237 1,597
    Inorganic zinc high-build 340 571 728
    Military exterior 340 571 728
    Mist 610 2,235
    Navigational aids 550 1,597
    Nonskid 340 571 728
    Nuclear 420 841 1,069
    Organic zinc 360 630 802
    Pretreatment wash primer 780 11,095
    Repair and maint. of thermoplastics 550 1,597
    Rubber camouflage 340 571 728
    Sealant for thermal spray aluminum 610 2,235
    Special marking 490 1,178
    Specialty interior 340 571 728
    Tack coat 610 2,235
    Undersea weapons systems 340 571 728
    Weld-through precon. primer 650 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]