EPA Renews Magnesium Emissions Paperwork Push
Published Date: 9/24/2026
Notice
Summary
The EPA is asking to keep collecting information from primary magnesium refineries to make sure they follow pollution rules. This renewal won’t change the rules but helps the EPA keep track of emissions and protect the environment. If you’re involved in magnesium refining, you can comment on this by October 26, 2026, with no new costs expected.
Analyzed Economic Effects
4 provisions identified: 0 benefits, 3 costs, 1 mixed.
Ongoing mandatory reporting and costs
If you own or operate a primary magnesium refinery subject to NESHAP subpart TTTTT, you must continue to provide mandatory information to the EPA. The EPA estimates the total annual burden at 972 hours and total annual cost at $135,000 (which includes $1,820 in annualized capital or operation & maintenance costs).
Who must comply — emission thresholds
The rule applies to existing and new primary magnesium refining facilities that emit 10 tons per year or more of any individual hazardous air pollutant (HAP), or 25 tons per year or more of any combination of HAPs. New facilities include those that began construction or reconstruction after the date of proposal.
Specific compliance actions required
Affected facilities must submit initial notifications, conduct performance tests, file periodic (including semiannual) reports, and keep records of startup, shutdown, malfunction events, and any periods when monitoring is inoperative. These activities are required to show compliance with 40 CFR part 63, subpart TTTTT.
Renewal keeps burden same; small inflation adjustment
EPA proposes to extend the current information collection with no change in the overall burden from the most recently approved ICR through September 30, 2026. The agency notes the regulations have not changed and industry growth is low, but operation and maintenance costs have been adjusted upward for inflation (the ICR lists $1,820 annualized capital/O&M as part of the $135,000 total).
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