NRC issued guidance 4.24, "Aquatic Environmental Studies for Nuclear Power Stations," which provides technical guidance to applicants for the development of aquatic studies involving environmental reviews that are part of the agency's licensing actions related to new nuclear power stations.

EPA revised rules under §6 of TSCA to remove certain procedural requirements that are no longer required following passage of the Frank R. Lautenberg Chemical Safety for the 21st Century Act.

EPA seeks public comment on whether a revision is warranted to reporting regulations under TSCA §8(a), which require the Agency to review the size standards for small manufacturers and processors.

EPA seeks public comment on proposed provisions for ethanol flex fuel contained in the Renewables Enhancement and Growth Support rule that was promulgated on November 16, 2016.

EPA issued final rulemaking to implement the Formaldehyde Standards for Composite Wood Products Act under TSCA that applies to hardwood plywood, medium-density fiberboard, particleboard, and finished goods containing these products to reduce exposures and to avoid adverse health effects.

EPA announced the availability of final updates to the 1992 Manual of Protective Action Guides and Protective Actions for Nuclear Incidents to help federal, state, local, and tribal emergency response officials make radiation protection decisions during emergencies.

EPA added a hexabromocyclododecane category to the list of toxic chemicals subject to reporting under EPCRA and the Pollution Prevention Act due to developmental and reproductive effects in humans and toxicity to aquatic and terrestrial organisms.

BLM promulgated new regulations to reduce waste of natural gas from venting, flaring, and leaks during oil and natural gas production activities on onshore federal and Indian (other than Osage Tribe) leases; the regulations also clarify when produced gas lost through venting, flaring, or leaks is subject to royalties, and when oil and gas production may be used royalty-free on-site.

EPA promulgated significant new use rules under TSCA for 57 chemical substances that were the subject of premanufacture notices.

EPA proposed to add a nonylphenol ethoxylates category to the list of toxic chemicals subject to reporting under EPCRA §313 and Pollution Prevention Act §6607 because of their toxic effect on aquatic organisms.