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Division of Air Resource Management

Reinforced Polyester Resin Operations

Reinforced polyester resin operations entail laying reinforcements such as glass fiber in a mold and saturating it with a polyester plastic resin. The resin hardens to form a rigid plastic part, reinforced with the fiberglass. The resin is mixed with a catalyst as it is applied that causes a cross-linking reaction between the resin molecules. The cross-linking reaction causes the resin to harden from a liquid to a solid. Fiberglass boats and fiberglass boat parts, bathtubs, pools and hot tubs are built using this process.

Printing Operations

Printing operations involve the processes of transferring images or material onto a substrate. The industry is organized by type of printing process used: heatset offset and non-heatset offset lithography, rotogravure, flexography, screen, letterpress, digital, water-based - ultraviolet-cured- solvent based material flexographic or rotogravure.

Perchloroethylene Dry Cleaners

Dry cleaners are facilities engaged in the cleaning of fabrics in a nonaqueous solvent by means of one or more washes in a solvent, extraction of excess solvent by spinning, and drying by tumbling in an airstream. Such facilities include dry to dry machines, filter and purification systems; emission control equipment; waste disposal systems; holding tanks; pumps and attendant piping and valves.

Human Crematories

A human crematory is a facility containing one or more combustion units, known as cremators, used solely for the cremation of human bodies within appropriate containers. Cremators are usually made of high-grade steel plate and lined inside with heavy refractory tile or brick. Most cremators have a variety of automatic controls and use gas for heating the cremator.

Halogenated Solvent Degreasers

Solvent degreasing (or solvent cleaning) is the physical process of using organic solvents to remove grease, fats, oils, wax or soil from various metal, glass or plastic items. The three basic types of solvent cleaning equipment used in degreasing operations are categorized as batch vapor cleaners, in-line cleaners and batch cold cleaners.


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