{"data":{"id":"us/40-cfr-63.5752","jurisdiction":"us","citation":"40 CFR 63.5752","heading":"How do I calculate the organic HAP content of aluminum recreational boat surface coatings?","body":"(a) Use equation 1 of this section to calculate the weighted-average HAP content for all aluminum surface coatings used in the past 12 months.\nWhere:\nHAPSC = weighted-average organic HAP content for all aluminum coating materials, kilograms of organic HAP per liter of coating solids.\nm = number of different aluminum primers, top coats, and clear coats used in the past 12 months.\nVoli = volume of aluminum primer, top coat, or clear coat i used in the past 12 months, liters.\nDi = density of coating i, kilograms per liter.\nWi = mass fraction of organic HAP in coating i, kilograms of organic HAP per kilogram of coating.\np = number of different thinners, activators, and other coating additives used in the past 12 months.\nVolk = total volume of thinner, activator, or additive k used in the past 12 months, liters.\nDk = density of thinner, activator, or additive k, kilograms per liter.\nWk = mass fraction of organic HAP in thinner, activator, or additive k, kilograms of organic HAP per kilogram of thinner or activator.\nSolidsi = solids content of aluminum primer, top coat, or clear coat i, liter solids per liter of coating.\n(b) Compliance is based on a 12-month rolling average. If the weighted-average organic HAP content does not exceed 1.22 kilograms of organic HAP per liter of coating solids, then you are in compliance with the emission limit specified in § 63.5743(a)(2).","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 VVVV—National Emission Standards for Hazardous Air Pollutants for Boat Manufacturing"],"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":"1c588e32cdcff4a4e807f8d01682ab2745b25e7f99829c4ced6e7c0965dcd8e4","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.5749","next":"us/40-cfr-63.5753"},"notice":"GroundRules: Original legal text. Not legal advice."}