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

§ 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.

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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.
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