On November 25, 2011, EPA Region 6 issued an Administrative Order (AO) under its authority pursuant to Section 1421 of the Safe Drinking Water Act to CEP Mid-Continent, LLC (CEP) located in Tulsa, Oklahoma. The AO was issued in response to the following violation: failing to plug three injection wells within one year after termination of injection operations. The AO requires CEP to plug the wells according to Environmental Protection Agency regulations. CEP must complete plugging of the wells within 30 days. For more information, see documents, below.