Subpart T – Magnesium Production
This page provides resources for subpart T reporters, including implementation information as well as supporting documents for relevant rulemakings.
On this page:
Summary
The magnesium (Mg) production source category is defined as consisting of any process where Mg metal is produced through smelting (including electrolytic smelting), refining, or remelting operations (including primary production facilities that extract Mg from its ore and secondary production facilities that recover Mg from scrap), or any process where molten Mg is used in alloying, casting, drawing, extruding, forming, or rolling operations.
Reporter Resources
Subpart T Regulatory History
| 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 (12/2014) (pdf) (48 pp, 796K) Response to Comments Fact Sheet (12/2014) (pdf) (45 KB) Proposed Preamble and Rule (1/10/2012) (pdf) (19 pp, 222K) Proposed Preamble and Rule (9/11/2013) (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) |
2014 |
| 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 (11/2013) (pdf) (79 pp, 935K) Correction Notice (11/2013) (pdf) (2 pp, 248K) Response to Comments (11/2013) Fact Sheet (11/2013) (pdf) (37.6 KB) Memo: Table of Final 2013 Revisions to the Greenhouse Gas Reporting Rule (pdf) (1 MB) Proposed Preamble and Rule (4/2/2013) (pdf) (77 pp, 909K) |
2014 |
| 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 (11/2011) (pdf) (25 pp, 341K) Response to Comments (11/2011) Fact Sheet (11/2011) (pdf) (48 KB) Proposed Preamble and Rule (8/4/2011) (pdf) (30 pp, 427K) More Information on Technical Corrections |
2011 |
| 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 (5/2011) (pdf) (37 pp, 330K) Correction Notice (10/2011) (pdf) (6 pp, 167K) Response to Comments (5/2011) Fact Sheet for CBI Final Rule (pdf) (43 KB) Memo: Final Data Category Assignments and Confidentiality Determinations for Part 98 Reporting Elements (pdf) (1.8 MB) Proposed Preamble and Rule (7/27/2010) (pdf) (4 pp, 164K) Proposed Preamble and Rule (7/07/2010) (pdf) (40 pp, 366K) More Information on CBI Final Rule (pdf) (96 KB) |
2011 |
| 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 (7/2010) (pdf) (43 pp, 372K) Response to Comments (7/2010) Withdrawal Notice (4/2010) (pdf) (133 KB) Direct Final Rule (3/16/2010) (pdf) *(8 pp, 165K) Proposed Preamble and Rule (3/16/2010) (pdf) (140 KB) Proposed Preamble and Rule (4/10/2009) (pdf) (3 MB) Technical Support Document: Magnesium Production (pdf) (48 KB) More Information on Subparts FF, II, TT * The direct final rule received adverse comment and was subsequently withdrawn. |
2011 |