The rule defines "coating" with a definition that has been used by EPA and is similar to prior definitions used by the Division of Air Quality (DAQ). The definition for "coating" is currently included in each rule, but with this rule amendment it is being moved to the general definitions section. The rule defines "composite vapor pressure" as the sum of the partial pressures of the compounds defined as VOCs. The rule defines "VOC content" with an equation that can be used by regulated sources.