Subpart N – Glass Production

This page provides resources for subpart N reporters, including implementation information as well as supporting documents for relevant rulemakings.

Summary

The glass production source category consists of facilities that manufacture glass (including flat, container, or pressed and blown glass) or wool fiberglass using one or more continuous glass melting furnaces. Experimental furnaces and research and development process units are excluded.

Reporter Resources

Subpart N Regulatory History

40 CFR Part 98.140
Federal Register Date Citation Action Description
4/25/2024 89 FR 31802 Final Rule

Updates global warming potentials (GWPs), expands the GHGRP to new source categories, and revises the requirements for certain sectors to improve the data collected and program implementation.
Final Preamble and Rule (April 2024) (pdf) (3.4 MB)
Response to Comments 2024 (pdf) (5.05 MB)
Final Rule Fact Sheet (April 2024) (pdf) (343.73 KB)
Fact Sheet about Updated GWPs (pdf) (166.87 KB)
Supplemental Preamble and Rule (pdf) (1,048 KB)
Proposed Preamble and Rule (June 2022) (pdf) (2.2 MB)
Rulemaking Docket
12/09/2016 81 FR 89188 Final Rule Revises 29 subparts to streamline implementation, improve data quality, provide flexibility, and clarify the rule. Establishes confidentiality determinations for new or substantially revised data elements. Final action in response to a Petition for Reconsideration.
Final Preamble and Rule (December 2016) (pdf) (87 pp, 801 KB)
Response to Comments (December 2016)
Fact Sheet: 2015 Revisions and Confidentiality Determinations (pdf) (209.54 KB, Nov 2016)
Memo: Table of Final 2015 Revisions to the Greenhouse Gas Reporting Rule
Proposed Preamble and Rule (January 2016) (pdf) (91 pp, 890 KB)
10/24/2014 79 FR 63750 Final Rule

Amends reporting and recordkeeping requirements and establishes an alternative electronic verification approach for 23 subparts to address concerns regarding public disclosure of business sensitive information while maintaining EPA’s ability to verify emissions and ensure compliance.
Final Preamble and Rule (October 2014) (pdf) (51 pp, 633 KB)
Response to Comments (December 2014)
Fact Sheet: Revisions to Reporting and Recordkeeping Requirements and Final Confidentiality Determinations under the Greenhouse Gas Reporting Program (pdf) (40.52 KB, Sep 2014)
Proposed Preamble and Rule (September 2013) (pdf) (31 pp, 550 KB)
Memorandum: Final Data Elements Deferred to March 31, 2015, List of ‘Inputs to Equations’ Data Elements Not To Be Reported (pdf) (560.53 KB, Sep 2014)
More about Confidential Business Information for GHG Reporting
11/29/2013 78 FR 71904   Updates global warming potentials (GWPs) to reflect IPCC AR4 values, and amends 27 subparts to improve and clarify reporting requirements. Establishes confidentiality determinations for new and revised data elements.
Final Preamble and Rule (November 2013) (pdf) (79 pp, 935 KB)
Correction Notice (January 2014) (pdf) (2 pp, 248 KB)
Response to Comments (November 2013)
Fact Sheet: 2013 Revisions and Confidentiality Determinations (pdf) (37.58 KB, Nov 2013)
Memorandum: Table of Final 2013 Revisions to the Greenhouse Gas Reporting Rule (pdf) (1.02 MB, Sept 2013)
Proposed Preamble and Rule (April 2013) (pdf) (77 pp, 909 KB)
05/26/2011 76 FR 30782 Final Rule

Finalizes confidentiality determinations for 34 subparts for data elements that are not inputs to emissions equations. Finalizes amendments to 40 CFR 2 governing CBI obtained under 40 CFR 98.
Final Preamble and Rule (May 2011) (pdf) (37 pp, 330 KB)
Proposed Preamble and Rule (July 2010) (pdf) (40 pp, 366 KB)
Correction Notice (October 2011) (pdf) (6 pp, 167 KB)
Response to Comments (May 2011)

Proposed Preamble and Rule (July 2010) (pdf) (4 pp, 164 KB)
Fact Sheet: Final Confidentiality Determinations for Data Collected Under the Greenhouse Gas Reporting Program and Amendments to Special Rules Governing Certain Information Obtained Under the Clean Air Act (pdf) (43.28 KB, May 2011)
Final Data Category Assignments and Confidentiality Determinations for Part 98 Reporting Elements (pdf) (1.76 MB)
CBI Powerpoint Presentation (pdf) (95.58 KB)
10/28/2010 75 FR 66434 Final Rule Corrects technical and editorial errors, and clarifies rule provisions for subparts A, E, H, K, N, O, P, Q, S, V, Z, CC, EE, GG, HH, LL, MM, and NN.
Final Preamble and Rule (October 2010) (pdf) (47 pp, 376 KB)
Final Rule: Technical Corrections - Response to Comments (pdf) (196.82 KB)
Proposed Preamble and Rule (June 2010) (pdf) (34 pp, 335 KB)
Final Rule: Technical Corrections (October 2010)
10/30/2009 74 FR 56260 Final Rule

Finalizes the first 30 subparts of 40 CFR Part 98, comprising subparts A, C, D, E, F, G, H, K, N, O, P, Q, R, S, U, V, X, Y, Z, AA, BB, CC, EE, GG, HH, JJ, LL, MM, NN, OO, and PP.
Final Preamble and Rule (October 2009) (pdf) (260 pp, 1.4 MB)
Proposed Mandatory Reporting of Greenhouse Gases Rule (pdf) (3.03 MB)
Proposed Mandatory Reporting of Greenhouse Gases Preamble (pdf) (3.71 MB)
Response to Public Comments- Subpart N (pdf) (56.64 KB, 09/2009)
Regulatory Impact Analysis for the Mandatory Reporting of Greenhouse Gas Emissions Final Rule (pdf) (1.32 MB) Subpart N Technical Support Document- Glass Production (pdf) (209.83 KB, 01/22/2009)

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Last updated on April 25, 2025