Quad-O(NSPS OOOO), is gaining popularity among onshore production. In January 2009 the EPA was sued for failing to review existing regulations, forcing the EPA to update old rules and regulations. Both the District of Columbia, and The U.S. District Court agreed that this new type of drilling evokes an entirely new source of “volatile organic compounds”.

The start of the NSPS OOOO labelled what equipment and standards are influenced and detailed the specifically required emission reductions. These new regulations are required for all onshore oil and gas facilities reconstructed, modified, or constructed after Aug. 23, 2011. Quad-0 specifically states that each location that has been constructed or modified on August 23, 2011, must meet the published guidelines, and to allow producers to implement adjustments accordingly.