On January 19th, the U.S. EPA finalized amendments to 40 CFR Part 60, Subpart K(b) – Standards of Performance for Volatile Organic Liquid Storage Vessels (Including Petroleum Liquid Storage Vessels) for Which Construction, Reconstruction, or Modification Commenced After July 23, 1984, (Including Petroleum Liquid Storage Vessels) for Which Construction, Reconstruction, or Modification Commenced After July 23, 1984,). Specifically, the new rule allows owners or operators of in

In March 2020, the U.S. EPA revised the emission calculation methods used in AP-42 Chapter 7.1 (Organic Liquid Storage Tanks). Nearly a year after the EPA posted the final revisions to this section, many state agencies and other regulatory bodies are - or soon will - be requiring use of these latest emission methods and meteorological data for permitting and emission reports. A large portion of the updates to AP-42 Chapter 7 included the addition of API estimation methods for