National Pollution Discharge Elimination System

On May 15, EPA released its draft Study of Oil and Gas Extraction Wastewater Management under the Clean Water Act. The Draft Study addresses the results of an extensive review initiated last year to evaluate the management of oil and gas wastewaters generated at onshore facilities and to assess the need for additional discharge options for onshore oil and gas wastewater under the Clean Water Act. Although EPA has not yet adopted any recommendations for regulatory action, it is evident that EPA is continuing to take a hard look at the merits of authorizing broader discharges of produced water to surface waters than those currently allowed for onshore discharges under the CWA effluent guidelines (and generally referred to as the zero discharge standard).
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