{"data":{"id":"us/40-cfr-63.5885","jurisdiction":"us","citation":"40 CFR 63.5885","heading":"How do I calculate percent reduction to demonstrate compliance for continuous lamination/casting operations?","body":"You may calculate percent reduction using any of the methods in paragraphs (a) through (d) of this section.\n(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.\nWhere:\nPR = percent reduction;\nInlet + HAP emissions entering the control device, lbs per year;\nOutlet = HAP emissions existing the control device to the atmosphere, lbs per year.\nWhere:\nPR = percent reduction;\nWAEici = wet-out area organic HAP emissions, lbs per year, vented to a control device;\nWAEiu = wet-out area organic HAP emissions, lbs per year, not vented to a control device;\nOju = oven organic HAP emissions, lbs per year, not vented to a control device;\nOjci = oven organic HAP emissions, lbs per year, vented to a control device;\nWAEico = wet-out area organic HAP emissions, lbs per year, from the control device outlet;\nOjco = oven organic HAP emissions, lbs per year, from the control device outlet.\n(b) Averaging option. Use Equation 3 of this section to calculate percent reduction.\nWhere:\nPR = percent reduction;\nWAEici = wet-out area organic HAP emissions from wet-out area i, lbs per year, sent to a control device;\nWAEiu = wet-out area organic HAP emissions from wet-out area i, lbs per year, not sent to a control device;\nWAEico = wet-out area organic HAP emissions from wet-out area i, lbs per year, at the outlet of a control device;\nOju = organic HAP emissions from oven j, lbs per year, not sent to a control device;\nOjci = organic HAP emissions from oven j, lbs per year, sent to a control device;\nOjco = organic HAP emissions from oven j, lbs per year, at the outlet of the control device;\nm = number of wet-out areas;\nn = number of ovens.\n(c) Add-on control device option. Use Equation 1 of this section to calculate percent reduction.\n(d) Combination option. Use Equations 1 through 3 of this section, as applicable, to calculate percent reduction.","path":["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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"b8545569f711bf022ae749767b6d682d405d2dc6b60b1fa1a41d6b154507709c","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.5880","next":"us/40-cfr-63.5890"},"notice":"GroundRules: Original legal text. Not legal advice."}