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Federal Register Highlights – 10/23/15

October 23, 2015

Unpublished, time-sensitive and proposed rules for October 23, 2015:

 TEMPORARY RULE: The Coast Guard has issued a temporary deviation from the operating schedule that governs the Burlington Northern Santa Fe Railroad Company (BNSF) Bridge 37.0 across the Snohomish River, mile 3.5 at Marysville, WA. The deviation is necessary to accommodate scheduled bridge rail joint maintenance and replacement. The deviation allows the bridges to remain in the closed-to- navigation position during the maintenance to allow safe movement of work crews. This deviation is effective from November 1, 2015 through November 15, 2015.

TEMPORARY RULE: The Coast Guard has issued a temporary deviation from the operating schedule that governs the Coleman Memorial Bridge (US 17) across the York River, mile 7.0, at Yorktown, VA. This deviation allows the bridge to remain in the closed-to-navigation position to facilitate mechanical repairs to the bridge. This deviation is effective from 10 p.m. on November 14, 2015, until 7 a.m. on November 22, 2015.

PROPOSED RULE: In this action, the Environmental Protection Agency (EPA) is proposing a federal plan to implement the greenhouse gas (GHG) emission guidelines (EGs) for existing fossil fuel- fired electric generating units (EGUs) under the Clean Air Act (CAA). The EGs were proposed in June 2014 and finalized on August 3, 2015 as the Carbon Pollution Emission Guidelines for Existing Stationary Sources: Electric Utility Generating Units (also known as the Clean Power Plan or EGs). This proposal presents two approaches to a federal plan for states and other jurisdictions that do not submit an approvable plan to the EPA: a rate-based emission trading program and a mass- based emission trading program. These proposals also constitute proposed model trading rules that states can adopt or tailor for implementation of the final EGs. The federal plan is an important measure to ensure that congressionally mandated emission standards under the authority of the CAA are implemented. The proposed federal plan is related to but separate from the final EGs. The final EGs establish the best system of emission reduction (BSER) for applicable fossil fuel-fired EGUs in the form of a carbon dioxide (CO2) emission performance rate for steam-fired EGUs and a CO2 emission performance rate for natural gas-fired combined cycle (NGCC) units, and provide guidance and criteria for the development of approvable state plans. The purpose of the proposed federal plan is to establish requirements directly applicable to a state’s affected EGUs that meet these emission performance levels, or the equivalent statewide goal, in order to achieve reductions in CO2 emissions in the case where a state or other jurisdiction does not submit an approvable plan. The stringency of the emission performance levels established in the final EGs will be the same whether implemented through a state plan or a federal plan. The EPA is also proposing enhancements to the CAA section 111(d) framework regulations related to the process and timing for state plan submissions and EPA actions. The EPA intends to finalize both the rate-based and mass-based model trading rules in summer 2016. Comments must be received on or before January 21, 2016. (To submit comments, visit, reference docket number EPA-HQ-OAR-2015-0199.)

RULE: We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney (PW) PW4164, PW4168, PW4168A, PW4164–1D, PW4168–1D, PW4168A–1D, and PW4170 turbofan engines. This AD was prompted by crack finds in the 6th stage low-pressure turbine (LPT) disk. This AD requires removal of the affected 6th stage LPT disks. We are issuing this AD to prevent failure of the 6th stage LPT disk, which could lead to an uncontained disk release, damage to the engine, and damage to the airplane. This AD is effective November 27, 2015.

RULE: We are adopting a new airworthiness directive (AD) for all Technify Motors GmbH TAE 125–02 reciprocating engines with a dual mass flywheel installed. This AD requires installation of a start phase monitoring system and associated specified software. This AD was prompted by reports of a gearbox drive shaft breaking during starting or restarting of the engine. We are issuing this AD to prevent overload and failure of the gearbox drive shaft, which could result in failure of the engine, in-flight shutdown, and loss of control of the airplane. This AD becomes effective November 27, 2015.


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