By Meredith Odato Graham

The U.S. Environmental Protection Agency (EPA) is revising important definitions in the New Source Performance Standards (NSPS) rule for the oil and gas sector, NSPS Subpart OOOO, in response to stakeholder petitions.  In a final rule published today, EPA is revising the definition of “low pressure gas well”, in order to identify the wells that cannot implement a reduced emission completion (otherwise known as REC or “green completion”) because of a lack of necessary reservoir pressure.  EPA is also revising the definition of “storage vessel” to remove references to “connected in parallel” and “installed in parallel”, in order to clarify which storage vessels are subject to NSPS Subpart OOOO.  The revisions are effective immediately.

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