ENV-17-02 AP-42 for Storage Tanks is Changing – Does It Matter?

Description:

The United States Environmental Protection Agency (“EPA”) is reviewing draft revisions to its guidance for estimating emissions from storage tanks as published in Chapter 7.1 of the EPA’s AP-42 document (“AP-42 Chapter 7.1”).1 This guidance presently addresses emissions from storage tanks during routine operations, and also emissions from the specific non-routine case of floating roof landings. The draft revisions would add guidance for estimating emissions from tank cleaning events, as well as make numerous changes to the existing guidance for routine emissions. These revisions would result in changes to estimated emissions for most storage tanks, but with varying degrees of impact.