The Environmental Protection Agency (EPA) is revising old rule provisions addressing vapor balancing for transfer racks by providing an additional, equivalent control option that allows routing of displaced hazardous air pollutants vapors to a storage tank with a common header, according to information published in the Federal Register July 28.
The final rule applies to national emission standards for hazardous air pollutants for organic liquids distribution (non-gasoline) that EPA promulgated February 3, 2004.
In addition, EPA is adding an option to allow vapor balancing back to the transport vehicle for storage tanks when they are being filled with organic liquids. EPA is withdrawing the proposed amendment that would have allowed vapor balancing transfer rack emissions to a process unit because this option is already available through other language. EPA also is making additional changes that are either technical corrections or clarifications.
To see the information in its entirety, click here for the Federal Register.