Consumed Solvent - The amount of solvent purchased and emitted to the environment, (air, water and Land) in that year.

Dry to Dry Systems - Refers to systems in which the washing and drying is done in a single machiene that is vented to a control device or to the atmosphere during the deoderizing part of the drying cycle.

Perchlorethylene - an aliphatic halogenated hydrocarbon having the chemical formula CCl₂=CCl₂. It is a colourless, volatile liquid that is essentially non-flamible (synonym: tetrachloroethylene).

Perchloroethylene Dry Cleaning Facility - any facility engaged in the cleaning of fabrics or leather using one or more washes in perchloroethylene slovent, sxtracting excess slovent by spinning and drying by tumbling in an airstream. The facility includes, but is not limited to, washers, dryers, filter and purification systems, waste disposal systems, holding tanks, pumps and attendant piping valves.

Volatile Organic Compound (VOC) - organic compounds that parcipitate in atmospheric photochemical reactions, excluding methane, ethane, methyl chloroform, methylene chloride, most chloroflruocarbons (CFC's) and hydrogenated chlorofluorocarbons (HCFC's).