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The notified regulation establishes the classification for motor vehicles and trailers with a view to their circulation, approval, certification and registration in MERCOSUR States Parties.

EPA proposes to:
1. correct regulations pertaining to how auto manufacturers must calculate credits for the GHG program's optional advanced technology incentives. The regulations currently in place result in auto manufacturers receiving fewer credits than the agency intended for electric vehicles, plug-in hybrid electric vehicles, fuel cell electric vehicles, and natural gas fueled vehicles. Auto manufacturers requested through a petition letter submitted jointly by the Auto Alliance and Global Automakers in June 2016 that EPA correct the regulations to provide the intended level of credits for these technologies
2. clarify the calculation methodology in the regulations. Both of these corrections allow the program to be implemented as originally intended. The proposed corrections are not expected to result in any additional regulatory burdens or costs.

EPA is proposing to amend the regulations promulgated in a final rule that published in the Federal Register on 12 December 2016, concerning formaldehyde emission standards for composite wood products. EPA is publishing these proposed amendments to address certain technical issues and to further align the final rule requirements with the California Air Resources Board (CARB) Airborne Toxic Control Measures (ATCM) Phase II program. Addressing these technical issues would add clarity for regulated entities. These revisions to the existing rule would also streamline compliance programs and help to ensure continued smooth transitions for supply chains to comply with the requirements associated with regulated composite wood products.

The Clean Air Act (CAA) prohibits knowingly venting or releasing ozone-depleting and substitute refrigerants in the course of maintaining, servicing, repairing, or disposing of appliances or industrial process refrigeration. On 18 November 2016, EPA finalized a rule that updated the existing refrigerant management requirements and extended requirements that previously applied only to refrigerants containing an ozone -depleting substance (ODS) to substitute refrigerants such as hydrofluorocarbons that are subject to the venting prohibition (i.e., those that have not been exempted from that prohibition) . The Agency is revisiting the aspects of the 2016 Rule that apply to equipment containing such substitute refrigerants. This action proposes changes to the legal interpretation that supported that rule and amendments to the regulations based on the revised interpretation. More specifically, in connection with the proposed changes to the legal interpretation, EPA is proposing to revise the appliance maintenance and leak repair provisions so they apply only to equipment using refrigerant containing a class I or class II substance. Based on this proposed limitation of the leak repair requirements, this document further proposes to revise the list of practices that must be followed in order for refrigerant releases to be considered de minimis to clarify that the reference to following leak repair practices only applies to equipment that contains ODS refrigerant. EPA is also taking comment on whether, in connection with the proposed changes to the legal interpretation, the 2016 Rule's extension of subpart F refrigerant management requirements to such substitute refrigerants should be rescinded in full. Additionally, EPA is proposing to extend by six to twelve months the 1 January 2019 compliance date for when appliances containing only substitute refrigerants subject to the venting prohibition must comply with the appliance maintenance and leak repair provisions.

Addressing childhood lead exposure is a priority for EPA. As part of EPA's efforts to reduce childhood lead exposure, EPA evaluated the current dust-lead hazard standards (DLHS) and the definition of lead-based paint (LBP) . Based on this evaluation, EPA is proposing to lower the DLHS from 40 [mu]g/ft\2\ and 250 [mu]g/ft\2\ to 10 [mu]g/ft\2\ and 100 [mu]g/ft\2\ on floors and wind ow sills, respectively. EPA is proposing no changes to the current definition of LBP due to insufficient information to support such a change.

Under section 211 of the Clean Air Act, the Environmental Protection Agency (EPA) is required to set renewable fuel percentage standards every year. This action proposes the annual percentage standards for cellulosic biofuel , biomass -based diesel, advanced biofuel , and total renewable fuel that apply to gasoline and diesel transportation fuel produced or imported in the year 2019. Relying on statutory waiver authority that is available when the projected cellulosic biofuel production volume is less than the applicable volume specified in the statute, EPA is proposing volume requirements for cellulosic biofuel , advanced biofuel , and total renewable fuel that are below the statutory volume targets. We are also proposing the applicable volume of biomass -based diesel for 2020.

This action proposes amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) Refinery MACT 1, which was published in the Federal Register on 1 December 2015, and subsequently amended on 13 July 2016. The 1 December 2015, action was the result of a risk and technology review in which the Environmental Protection Agency (EPA) finalized amendments to Refinery MACT 1 and Refinery MACT 2. The 13 July 2016, action finalized technical corrections and clarifications, as well as changes to compliance dates for various emission sources, including the maintenance vent standards that apply during periods of startup, shutdown, maintenance, or inspection. In this action, the EPA is proposing to amend the compliance dates for maintenance vents to 30 January 2019. These proposed revisions do not affect any other requirements in the 1 December 2015, or 13 July 2016, final actions. This proposed action will have an insignificant effect on emissions reductions and no effect on costs.

The Food, Conservation , and Energy Act of 2008 amended the Lacey Act to provide, among other things, that importers submit a declaration at the time of importation for certain plants and plant products. The declaration requirement of the Lacey Act became effective on 15 December 2008, and enforcement of that requirement is being phased in. We are proposing to establish an exception to the declaration requirement for products containing a minimal amount of plant materials. This action would relieve the burden on importers while continuing to ensure that the declaration requirement fulfills the purposes of the Lacey Act. We are also proposing that all Lacey Act declarations be submitted within 3 business days of importation.

The Food, Conservation and Energy Act of 2008 amended the Lacey Act to provide, among other things, that importers submit a declaration at the time of importation for certain plants and plant products. The declaration requirements of the Lacey Act became effective on 15 December 2008, and enforcement of those requirements is being phased in. We are soliciting public comment on regulatory options that could address certain issues that have arisen with the implementation of the declaration requirement for composite plant materials.

The EPA is proposing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for 145 chemical substances which were the subject of premanufacture notices (PMNs) . The chemical substances are subject to Orders issued by EPA pursuant to section 5(e) of TSCA. This action would require persons who intend to manufacture (defined by statute to include import) or process any of these 145 chemical substances for an activity that is designated as a significant new use by this rule to notify EPA at least 90 days before commencing that activity. The required notification initiates EPA's evaluation of the intended use within the applicable review period. Persons may not commence manufacture or processing for the significant new use until EPA has conducted a review of the premanufacture notice, made an appropriate determination on the notification, and has taken such actions as are required with that determination. In addition to this notice of proposed rulemaking, EPA is issuing the action as a direct final rule elsewhere in this issue of the Federal Register.