This regulatory update from CH2M provides summaries of several regulatory actions from the EPA and USFWS in June 2016 across various media and sectors: - The EPA finalized amendments to new source performance standards for the oil and gas sector, clarified definitions regarding air permitting for oil and gas sources, and proposed rules regarding air permits and emergency defense provisions. - The USFWS finalized or proposed listings and critical habitat designations for several species under the Endangered Species Act. - Other rules addressed standards for solid waste incineration units, additions to EPCRA reporting requirements, and effluent limitations for oil and gas extraction wastewater.