Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 63.5885: How do I calculate percent reduction to demonstrate compliance for continuous lamination/casting operations?

You may calculate percent reduction using any of the methods in paragraphs (a) through (d) of this section.
(a) Compliant line option. If all of your wet-out areas have PTE that meet the requirements of EPA Method 204 of appendix M of 40 CFR part 51, and all of your wet-out area organic HAP emissions and oven organic HAP emissions are vented to an add-on control device, use Equation 1 of this section to demonstrate compliance. In all other situations, use Equation 2 of this section to demonstrate compliance.
Where:
PR = percent reduction;
Inlet + HAP emissions entering the control device, lbs per year;
Outlet = HAP emissions existing the control device to the atmosphere, lbs per year.
Where:
PR = percent reduction;
WAEici = wet-out area organic HAP emissions, lbs per year, vented to a control device;
WAEiu = wet-out area organic HAP emissions, lbs per year, not vented to a control device;
Oju = oven organic HAP emissions, lbs per year, not vented to a control device;
Ojci = oven organic HAP emissions, lbs per year, vented to a control device;
WAEico = wet-out area organic HAP emissions, lbs per year, from the control device outlet;
Ojco = oven organic HAP emissions, lbs per year, from the control device outlet.
(b) Averaging option. Use Equation 3 of this section to calculate percent reduction.
Where:
PR = percent reduction;
WAEici = wet-out area organic HAP emissions from wet-out area i, lbs per year, sent to a control device;
WAEiu = wet-out area organic HAP emissions from wet-out area i, lbs per year, not sent to a control device;
WAEico = wet-out area organic HAP emissions from wet-out area i, lbs per year, at the outlet of a control device;
Oju = organic HAP emissions from oven j, lbs per year, not sent to a control device;
Ojci = organic HAP emissions from oven j, lbs per year, sent to a control device;
Ojco = organic HAP emissions from oven j, lbs per year, at the outlet of the control device;
m = number of wet-out areas;
n = number of ovens.
(c) Add-on control device option. Use Equation 1 of this section to calculate percent reduction.
(d) Combination option. Use Equations 1 through 3 of this section, as applicable, to calculate percent reduction.

Where this section sits in the code

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 WWWW—National Emissions Standards for Hazardous Air Pollutants: Reinforced Plastic Composites Production

You may calculate percent reduction using any of the methods in paragraphs (a) through (d) of this section.

(a) Compliant line option. If all of your wet-out areas have PTE that meet the requirements of EPA Method 204 of appendix M of 40 CFR part 51, and all of your wet-out area organic HAP emissions and oven organic HAP emissions are vented to an add-on control device, use Equation 1 of this section to demonstrate compliance. In all other situations, use Equation 2 of this section to demonstrate compliance.

Where:

PR = percent reduction;

Inlet + HAP emissions entering the control device, lbs per year;

Outlet = HAP emissions existing the control device to the atmosphere, lbs per year.

Where:

PR = percent reduction;

WAEici = wet-out area organic HAP emissions, lbs per year, vented to a control device;

WAEiu = wet-out area organic HAP emissions, lbs per year, not vented to a control device;

Oju = oven organic HAP emissions, lbs per year, not vented to a control device;

Ojci = oven organic HAP emissions, lbs per year, vented to a control device;

WAEico = wet-out area organic HAP emissions, lbs per year, from the control device outlet;

Ojco = oven organic HAP emissions, lbs per year, from the control device outlet.

(b) Averaging option. Use Equation 3 of this section to calculate percent reduction.

Where:

PR = percent reduction;

WAEici = wet-out area organic HAP emissions from wet-out area i, lbs per year, sent to a control device;

WAEiu = wet-out area organic HAP emissions from wet-out area i, lbs per year, not sent to a control device;

WAEico = wet-out area organic HAP emissions from wet-out area i, lbs per year, at the outlet of a control device;

Oju = organic HAP emissions from oven j, lbs per year, not sent to a control device;

Ojci = organic HAP emissions from oven j, lbs per year, sent to a control device;

Ojco = organic HAP emissions from oven j, lbs per year, at the outlet of the control device;

m = number of wet-out areas;

n = number of ovens.

(d) Combination option. Use Equations 1 through 3 of this section, as applicable, to calculate percent reduction.

Collected 2026-08-27T02:26:04Z. Source file · JSON

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