National Emission Standards for Hazardous Air Pollutants for Shipbuilding and Ship Repair (Surface Coating) Operations

Résumé

This action promulgates national emission standards for hazardous air pollutants (NESHAP) under Section 112 of the Clean Air Act as amended in 1990 (CAA) for shipbuilding and ship repair (surface coating) operations. The NESHAP requires existing and new major sources to control emissions using the maximum achievable control technology (MACT) to control hazardous air pollutants (HAP). The MACT described herein is based on maximum HAP limits for various categories of marine coatings. Surface coating operations at shipyards are the focus of the NESHAP, and a variety of HAP are used as solvents in marine coatings. The HAP emitted by the facilities covered by this final rule include xylene, toluene, ethylbenzene, methyl ethyl ketone, methyl isobutyl ketone, ethylene glycol, and glycol ethers. All of these pollutants can cause reversible or irreversible toxic effects following exposure. The potential toxic effects include irritation of the eye, nose, throat, and skin and damage to the blood cells, heart, liver, and kidneys. The final rule is estimated to reduce baseline emissions of HAP by 24 percent or 318.5 megagrams per year (Mg/yr) (350 tons per year (tpy)). The emissions reductions