42624 Federal Register / Vol. 83, No. 164 / Thursday, August 23, 2018 / Proposed Rules 

III. Backfitting and Issue Finality 

DG–5061 describes a method that the 

staff of the NRC considers acceptable for 

use by nuclear power plant licensees in 

meeting the requirements for the 

cybersecurity requirements in 10 CFR 

73.54. The revision updates the 

guidance by incorporating lessons 

learned and guidance documents since 

the original publication of the guide. 

On October 21, 2010, the Commission 

issued SRM–COMWCO–10–0001, 

which clarified the scope of the cyber 

security rule. In the SRM, the 

Commission determined as a matter of 

policy that the NRC’s cyber security 

regulation (10 CFR 73.54) should be 

interpreted to include Systems 

Structures and Components in the 

Balance of Plant that have a nexus to 

radiological health and safety at NRClicensed nuclear power plants. The 

Commission clarified the scope of the 

rule to include digital assets previously 

covered by cyber security regulations of 

the Federal Energy Regulatory 

Commission. In response to this SRM, 

the licensees updated their cyber 

security plans to incorporate BOP 

systems into their cyber security plans. 

This revision includes guidance for 

SSCs in the BOP. 

Issuance of this DG, if finalized, 

would not constitute backfitting as 

defined in 10 CFR 50.109 (the Backfit 

Rule) and would not otherwise be 

inconsistent with the issue finality 

provisions in 10 CFR part 52. As 

discussed in the ‘‘Implementation’’ 

section of this DG, the NRC has no 

current intention to impose this guide, 

if finalized, on holders of current 

operating licenses or combined licenses. 

However, the scope of issue finality 

provided extends only to the matters 

resolved in the license or regulatory 

approval. Early site permits, design 

certification rules, and standard design 

approvals typically do not address or 

resolve compliance with operational 

programs such as the cybersecurity 

requirements in 10 CFR 73.54. 

Therefore, the various issue finality 

provisions would not apply to 

applications referencing an early site 

permit, design certification rule, or 

standard design approval with respect 

to the security matters addressed in this 

draft regulatory guide. 

Dated at Rockville, Maryland, this 20th day 

of August, 2018. 

For the Nuclear Regulatory Commission. 

Thomas H. Boyce, 

Chief, Regulatory Guide and Generic Issues 

Branch, Division of Engineering, Office of 

Nuclear Regulatory Research. 

[FR Doc. 2018–18231 Filed 8–22–18; 8:45 am] 

BILLING CODE 7590–01–P 

POSTAL SERVICE 

39 CFR Part 111 

USPS Marketing Mail Content 

Standards 

AGENCY: Postal ServiceTM. 

ACTION: Advance notice of proposed 

rulemaking; request for comments. 

SUMMARY: The Postal Service is 

contemplating amendment of the 

Mailing Standards of the United States 

Postal Service, Domestic Mail Manual 

(DMM®), to revise content standards for 

USPS Marketing Mail® letter-size and 

flat-size pieces regardless of level of 

sortation. This proposed change would 

limit all USPS Marketing Mail, regular 

and nonprofit, letter-size and flat-size, 

to content that is only paper-based/ 

printed matter; no merchandise or goods 

will be allowed of any type regardless 

of ‘‘value.’’ All items not eligible to be 

sent as USPS Marketing Mail letter-size 

or flat-size pieces would need to shift to 

another product (e.g., Priority Mail®, 

Parcel Select®) to be mailed. In an effort 

to obtain as much customer and mailer 

feedback as possible, the Postal Service 

will post this advance notice of 

proposed rulemaking for an extended 

comment period. 

DATES: Comments on this advance 

notice of proposed rulemaking are due 

October 22, 2018. 

ADDRESSES: Mail or deliver written 

comments to the Manager, Product 

Classification, U.S. Postal Service, 475 

L’Enfant Plaza SW, Room 4446, 

Washington, DC 20260–5015. 

Comments and questions can also be 

emailed to ProductClassification@

usps.gov using the subject line ‘‘USPS 

Marketing Mail Content Eligibility.’’ 

FOR FURTHER INFORMATION CONTACT: 

Direct questions to Elke Reuning-Elliott 

by email at elke.reuning-elliott@ups.gov 

or phone (202) 268–4063. 

SUPPLEMENTARY INFORMATION: In order to 

improve both processing and the 

delivery of goods and merchandise 

moving through the mail stream, the 

Postal Service proposes to limit content 

in USPS Marketing Mail, regular and 

nonprofit, letter-size and flat-size 

pieces, to paper-based/printed matter 

content. The limitation to nonmerchandise, paper-based/printed 

matter content would serve three goals: 

(1) Facilitate levels of service expected 

for the processing and delivery of 

merchandise that include end-to-end 

tracking and visibility, (2) move 

fulfillment of merchandise and goods 

out of USPS Marketing Mail, consistent 

with the transfer of fulfillment parcels 

out of Standard Mail (the predecessor to 

USPS Marketing Mail) in Docket No. 

MC2010–36, and (3) reduce operational 

inefficiencies when machines are 

unable to process letter-size or flat-size 

shaped inflexible items. Shifting goods 

and merchandise out of the letter-size 

and flat-size categories helps improve 

processing capabilities and ultimately 

shifts these items to mail streams with 

full end-to-end tracking capability 

consistent with market expectations. 

The Postal Service has many products 

available to support this shift and seeks 

to align postal processing with the 

intentions of its mailing customers. This 

shift also simplifies the mailing 

experience: Letter-size and flat-size 

pieces will move through processing 

and delivery more efficiently. Packages 

with goods and merchandise will have 

an Intelligent Mail® package barcode 

(IMpb®) and will travel through the 

package network stream. 

Ruth Stevenson, 

Attorney, Federal Compliance. 

[FR Doc. 2018–18105 Filed 8–22–18; 8:45 am] 

BILLING CODE 7710–12–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R03–OAR–2018–0490; FRL–9982– 

74—Region 3] 

Air Plan Approval; Maryland; 

Continuous Opacity Monitoring 

Requirements for Municipal Waste 

Combustors and Cement Plants 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Proposed rule. 

SUMMARY: The Environmental Protection 

Agency (EPA) is proposing to approve a 

state implementation plan (SIP) revision 

submitted by the State of Maryland (SIP 

Revision 16–04). This revision pertains 

to clarifying continuous opacity 

monitoring requirements and visible 

emission standards for municipal waste 

combustors (MWCs) and Portland 

cement plants. This action is being 

taken under the Clean Air Act (CAA). 

DATES: Written comments must be 

received on or before September 24, 

2018. 

ADDRESSES: Submit your comments, 

identified by Docket ID No. EPA–R03– 

OAR–2018–0490 at http://

www.regulations.gov, or via email to 

Spielberger.susan@epa.gov. For 

comments submitted at Regulations.gov, 

follow the online instructions for 

submitting comments. Once submitted, 


daltland on DSKBBV9HB2PROD with PROPOSALS