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Electronic Code of Federal Regulations

e-CFR data is current as of December 3, 2019

Title 40Chapter ISubchapter CPart 63Subpart VVVV → §63.5749


Title 40: Protection of Environment
PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES (CONTINUED)
Subpart VVVV—National Emission Standards for Hazardous Air Pollutants for Boat Manufacturing


§63.5749   How do I calculate the organic HAP content of aluminum wipedown solvents?

(a) Use equation 1 of this section to calculate the weighted-average organic HAP content of aluminum wipedown solvents used in the past 12 months.

eCFR graphic er22au01.016.gif

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Where:

HAPWD = weighted-average organic HAP content of aluminum wipedown solvents, kilograms of HAP per liter of total coating solids from aluminum primers, top coats, and clear coats.

n = number of different wipedown solvents used in the past 12 months.

Volj = volume of aluminum wipedown solvent j used in the past 12 months, liters.

Dj = density of aluminum wipedown solvent j, kilograms per liter.

Wj = mass fraction of organic HAP in aluminum wipedown solvent j.

m = number of different aluminum surface coatings (primers, top coats, and clear coats) used in the past 12 months.

Voli = volume of aluminum primer, top coat, or clear coat i used in the past 12 months, liters.

Solidsi = solids content aluminum primer, top coat, or clear coat i, liter solids per liter of coating.

(b) Compliance is based on a 12-month rolling average. If the weighted-average organic HAP content does not exceed 0.33 kilograms of organic HAP per liter of total coating solids, then you are in compliance with the emission limit specified in §63.5743(a)(1).

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