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Greenhouse Gas Reporting Program (GHGRP)

Subpart T – Magnesium Production

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

Implementation Information

Proposed and Promulgated Rules

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40 CFR Part 98.200
Federal Register Date Citation Action Description First reporting year impacted
12/11/2014 79 FR 73750 Final Rule Adds chemical-specific and default global warming potentials (GWPs) for fluorinated greenhouse gases (F-GHGs) and fluorinated heat transfer fluids (F-HTFs) to the general provisions of the Greenhouse Gas Reporting Rule, makes conforming changes to subpart I (Electronics Manufacturing) and subpart L (Fluorinated Gas Production), amends certain provisions of subpart L, and establishes confidentiality determinations for certain reporting requirements of subpart L.
Correction Notice (PDF) (1 p, 230K)
Final Preamble and Rule (PDF) (48 pp, 796K)
Response to Comments
Fact Sheet
Proposed Preamble and Rule (01/10/2012)(19 pp, 222K)
Proposed Preamble and Rule (09/11/2013) (PDF) (31 pp, 550K)
Proposed Rule (11/19/2013) (PDF)(24 pp, 400K)
Proposed Preamble and Rule (7/31/2014) (PDF) (21 pp, 370K)
Notice of Data Availability (PDF) (6 pp, 251K)
11/29/2013 78 FR 71904 Final Rule 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 (PDF) (79 pp, 935K)
Correction Notice (PDF) (2 pp, 248K)
Response to Comments
Fact Sheet
Memo: Table of Final 2013 Revisions to the Greenhouse Gas Reporting Rule
Proposed Preamble and Rule (PDF)(77 pp, 909K)
11/29/2011 76 FR 73866 Final Rule Amends subparts A, W, FF, II, OO, RR, and TT to clarify reporting requirements and correct technical and editorial errors.
Final Preamble and Rule (PDF) (25 pp, 341K)
Response to Comments
Proposed Preamble and Rule (PDF)(30 pp, 427K)
More Information
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 (PDF) (37 pp, 330K)
Proposed Preamble and Rule (07/07/2010) (PDF) (40 pp, 366K)
Correction Notice (PDF) (6 pp, 167K)
Response to Comments
Proposed Preamble and Rule (07/27/2010) (PDF) (4 pp, 164K)
Fact Sheet
Memo: Final Data Category Assignments and Confidentiality Determinations for Part 98 Reporting Elements
More Information
07/12/2010 75 FR 39736 Final Rule Adds the following subparts to 40 CFR Part 98: T (Magnesium Production), FF (Underground Coal Mines), II (Industrial Wastewater Treatment), and TT (Industrial Waste Landfills); also finalizes harmonizing changes to subpart A.
Final Preamble and Rule (PDF) (43 pp, 372K)
Response to Comments
Withdrawal Notice (PDF)
Direct Final Rule (03/16/2010) (PDF) *(8 pp, 165K)
Proposed Preamble and Rule (03/16/2010)
Proposed Preamble and Rule (04/10/2009)
Technical Support Document: Magnesium Production
More Information on Subparts FFIITT
* The direct final rule received adverse comment and was subsequently withdrawn.

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