DAQ-2025-001440

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rrI\/ISION OF AIR OUALITY
US Magnesium LLC
238 North 2200 West - Salt L,ake City, UT 84116-2921
801 / 532-2M3 - 800D62-9624 - FACSIMTLE 801 I 534-1407
Via Mail
March 12,2025
Mr. Bryce Bird, Director
Division of Air Quality
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144820
Salt Lake City, Utah 841 l4
RE: February 2025 Chlorine Emission Report Parameters - US Magnesium, LLC Rowley Facility
Dear Mr. Bird,
Please find attached the February 2025 Monthly Chlorine Emissions Report for the US Magnesium LLC
(US Mag) magnesium plant, located at Rowley, Utah. US Mag submits this report as required by its Title
V Operating Permit Number 4500030003, dated December 12,2018. The report includes the rolling l2-
month total source-wide chlorine emissions (ll.B.l .a.3) and the rolling 60-month scheduled maintenance
emissions (ll.B.l .b.3) submitted with the chlorine emission totals. Per USM's letter dated September 22,
2022, the magnesium production has been temporarily taken offline for necessary repairs. Monthly
chlorine emissions will continue to be zero until such time as US Mag develops a plan and schedule to
resume magnesium production.
If you have any questions, please do not hesitate to contact me at [phone].
Sincerely,
fri0/#--
Rob J. Hartman
Environmental Manager
US Magnesium LLC
Attachment
REVIEWED
Initials JBR Date 3/17/25
Comp Status Meets
File # 10716 Blue 2
site still shut down
zero emissions report
US MAGNESIUM . ROWLEY FACILITY
FEBRUARY 2025 CHLORIIIIE EMISSIONS
Total Cl 2 = S + f + EOG + Fugitives
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0,
0,
February 8,2025
February 9,2025
February 11,2025
February 12,2025
February 13,2O2
February 14,202
February 15,202
February 16,202
February 17,202
February'18,202
February 22,202
Monthly Total. tons
applaed to Ao Iaml 0
t2 tlonth Rolllng Tota 0
Emiasion Limil 3300
scheduled Maantenance Emissions
Feb-za 0
60-mo rolllno tot l 1437
-
I Unevoldrblc BErkdown Emllslons, tons
II"4FNT OF
AL QUAI ITY
Montt
Annuat
Source-wide
C12 Emissions
Ton
Annuat
Emission Limil
C12 Emissions
Ton
reD-zc
Jan-25
Aec-24
Nov-24
od-24
Sep-24
Aug-24
Jul-24
Jun-24
May-24
Apr-24
Mar-24
12 Month Rollino Total o 0
ln accordance with Operating Permit provision l.X
and UAC R307-415-5d, and based on information
and belief formed after reasonable inquiry, I
certifv that the statements and information in
this document are true, accurate, and complete.
Mirir
DiVISION OF AIR OUALITY