SIP Proposal: Maryland (interfacility averaging plan for nitrogen oxide emissions).

EPA withdrew the final rule approving Kentucky's underground injection control class II program for primacy.

The president issued Proclamation No. 9558 on Dec. 28, 2016, designating approximately 1.35 million acres in southeastern Utah as the Bears Ears National Monument to preserve the area’s cultural, prehistoric, and historic legacy and maintain its diverse array of natural and scientific resources for future generations.

SIP Approval: Rhode Island (removal of obsolete federal implementation plan addressing infrastructure SIP requirements).

FWS added the rusty patched bumble bee to the list of endangered and threatened wildlife under the ESA.

EPA denied petitions for reconsideration of the final Carbon Pollution Emission Guidelines for Existing Stationary Sources: Electric Utility Generating Units, except to the extent they raise topics concerning biomass and waste-to-energy.

EPA proposed to prohibit the manufacture, import, processing, and distribution of trichloroethylene for use in vapor degreasing, and to require manufacturers to provide downstream notification of these prohibitions throughout the supply chain, under TSCA.

United States v. Cyprus Amax Minerals Co., No. 2:17-cv-00140 (D. Ariz. Jan. 17, 2017). Settling CERCLA defendants who operated mine sites on Navajo Nation land must pay past and future response costs to abate releases of hazardous substances from the mine site.

United States v. Meadowvale Dairy, LLC, No. 5:15-cv-4016-LTS (N.D. Iowa Jan. 19, 2017). Settling CWA defendants who illegally discharged into waters adjoining their animal feeding facility and violated their concentrated animal feeding operations permits are required to pay $160k in civil penalties, implement practices to prevent future violations, and retain an independent third party to ensure compliance.

EPA delayed the effective date of the regulation titled "Uniform National Discharge Standards for Vessels of the Armed Forces - Phase II Batch One" to comply with the January 20, 2017, presidential memorandum.