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US EPA enters New Mexico wastewater MoU

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Hydrocarbon Engineering,

The US Environmental Protection Agency (EPA) has entered into a Memorandum of Understanding (MoU) with the State of New Mexico to clarify the existing regulatory and permitting frameworks related to the way wastewater from oil and natural gas extraction activities can be re-used, recycled, and renewed for other purposes.

“While underground injection certainly has its utility and place, alternatives are available that treat wastewater from oil and natural gas extraction for re-introduction into the hydrologic cycle which is especially important in arid areas suffering from drought like New Mexico,” said EPA Office of Water Assistant Administrator, David P. Ross. “This MoU with New Mexico is cooperative federalism in action – working directly with states and local officials to create new opportunities to provide safe water to water-scarce communities across the country.”

“The MoU will facilitate greater collaboration among stakeholders, and foster both resource conservation and economic opportunity,” said EPA Region 6 Administrator, Anne Idsal. “We look forward to working with New Mexico to address this important challenge.”

A workgroup will be convened to develop a white paper that synthesises existing regulatory framework under state and federal law in New Mexico, and identifies potential opportunities for treated produced water beneficial use.

Large volumes of wastewater are generated in the oil and gas industry and projections show that these volumes will only increase. In 2017, operators in New Mexico produced just about 900 million bbls of wastewater – most of which was disposed of in underground injection wells, permanently removing it from the hydrologic cycle.

“New Mexico is currently the third largest oil producer in the US and that oil is accompanied by even larger quantities of water. Clarifying the state and federal regulatory frameworks associated with its recycling and reuse is of the utmost importance,”said New Mexico Energy, Minerals and Natural Resources Cabinet Secretary, Ken McQueen.

“Reuse of this water in appropriate applications has the potential to relieve the growing demand on our ground and surface water sources. For that reason alone, this effort makes absolute sense,” said New Mexico State Engineer, Tom Blaine.

“If there are better, viable uses of this water, it is important to ensure the framework is adequate to both facilitate reuse and protect public health and the environment – this MOU targets these objectives,” said New Mexico Environment Department Cabinet Secretary, Butch Tongate.

This work builds on the oil and gas wastewater study that EPA announced in early May. The study considers approaches to manage both conventional and unconventional oil and gas extraction wastewaters from onshore facilities, including but not limited to an assessment of technologies for facilities that treat and discharge oil and gas extraction wastewaters.

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