40 C.F.R. § 63.5890
How do I calculate an organic HAP emissions factor to demonstrate compliance for continuous lamination/casting operations?
Cite as 40 C.F.R. § 63.5890 (2026)
(a) Compliant line option. Use Equation 1 of this section to calculate an organic HAP emissions factor in lbs/ton. Where: E = HAP emissions factor in lbs/ton of resin and gel coat WAE u = uncontrolled wet-out area organic HAP emissions, lbs per year WAE c = controlled wet-out area organic HAP emissions, lbs per year O u = uncontrolled oven organic HAP emissions, lbs per year O c = controlled oven organic HAP emissions, lbs per year R = total usage of neat resin plus, tpy G = total usage of neat gel coat plus, tpy (b) Averaging option. Use Equation 2 of this section to demonstrate compliance. Where: E = HAP emissions factor in lbs/ton of resin and gel coat WAE ui = uncontrolled organic HAP emissions from wet-out area i, lbs per year WAE ci = controlled organic HAP emissions from wet-out area i, lbs per year O uj = uncontrolled organic HAP emissions from oven j, lbs per year O cj = controlled organic HAP emissions from oven j, lbs per year i = number of wet-out areas j = number of ovens m = number of wet-out areas uncontrolled n = number of ovens uncontrolled o = number of wet-out areas controlled p = number of ovens controlled R = total usage of neat resin plus, tpy G = total usage of neat gel coat plus, tpy (c) Combination option. Use Equations 1 and 2 of this section, as applicable, to demonstrate compliance.