Effluent Limitations Guidelines and Standards for the Oil and Gas Extraction Point Source Category-Implementation Date Extension

The Environmental Protection Agency (EPA) proposes to extend the implementation deadline for certain facilities subject to the final rule establishing pretreatment standards under the Clean Water Act (CWA) for discharges of pollutants into publicly owned treatment works (POTWs) from onshore unconventional oil and gas (UOG) extraction facilities. EPA proposes these revisions in response to new information received after promulgation of the rule suggesting that there are likely facilities subject to the final rule not presently meeting the zero discharge requirements in the final rule.