SIP Approval: Nevada (nonattainment new source review requirements for the 2015 ozone NAAQS for Clark County Department of Environment and Sustainability). 

EPA withdrew from Agency regulation and management two designated ocean dredged material disposal sites, the Nome East and Nome West Sites, located near Nome, Alaska, pursuant to the Marine Protection, Research, and Sanctuaries Act.

NMFS proposed to modify the regulations for Marine Mammal Protection Act §104 permits, including scientific research, enhancement, photography, and public display permits and letters of confirmation.