DAQ-2025-000838

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US Magnesium LLC
238 Norttr 2200 West - Salt Lake Crty, Uf 84116-2921
801 / 532-2043 - 800n62-9624 - FACSIMILE 80t / 534-1407
Via Mail
February 6,2025
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 84114
RE: January 2025 Chlorine Emission Report Parameters - US Magnesium, LLC Rowley Facility
Dear Mr. Bird,
Please find attached the January 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 12-
month total source-wide chlorine emissions (ll.B.l.a.3) and the rolling 60-month scheduled maintenance
emissions (lI.B.1.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,frl0/#-
Rob J. Hartman
Environmental Manager
US Magnesium LLC
Attachment
UTAH DFPARTMENT
E t lvl RONMENTAL QUALITY
DIVISION OF AIR OUALITY
REVIEWED
Initials JBR Date 1/12/2025
Comp Status Meets
File # 10716 Blue 2
No operations occurred
US MAGNESIUM. ROWLEY FACILIry
JANUARY 2025 CHLORINE ETISSIONS
Total Cl 2 = fl + f + EOG + Fugttives
Datc
totat utz
Total Plant
C12 Emissions
Ton
t
Bypass Stack
C12 Emissions
Ton
Y
Melt Reactor
C12 Emissions
Ton
tru(i
EOG Stack
C12 Emissions
Ton
r-uglNes
Cl2 Emissions
Ton
January 1, zuti
January 2,202!
January 3, 2021
January 4,202!
January 5,2022
January 6, 202I
January 7,202!
January 8, 2021
January 9, 202t
January 10,202!
January 11 ,202!
January 12,202a
January 13,202!
January 14,2O2!
January 15,202a
January 16,202a
January 17,2021
January 18,202!
January 19,2024
January 20,2022
January 2'l,2O2a
January 22,202!
January 23,2021
January 24,202!
January 25,202!
January 26,202!
January 27,2021
January 28,202a
January 29,202a
January 30,2021
January 31,2024
U.UUU
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
U.UUT
0.00(
0.00(
0.00(
0.00(
0.00(
0.00(
0.00(
0.00(
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.0m
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
U.UUU
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
U.UUL
0.00c
0.00{
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.000
0.00c
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
U.UUT
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.00c
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
Tota 0.0fi 0.00c U.UW o.00t 0.00t
Monthly Total. tons
applied to AO limi U
12 Month Rolling Tota 0
EmBsion Lamal 3300
Schcduled llalnbnance Emlrslon3, tons
Jan-2!0.0
60-mo rolllno totrl 1443
Month
Annuat
Source-wide
C12 Emissions
Ton
Annua!
Emission Limit
Cl2 Emissions
Ton
Jan-23
Dec-24
Nov-24
od-24
Sep24
Aug-24
Jul24
Jun-24
May-24
Apr-24
Mar24
Feb-24
U
0
0
0
0
0
0
0
0
0
0
0
l2 Month Rollino Total 0 0
lunrvoldrblo Brcrkdonm Emlsslon3. ton3 |
ln accordance with Operating Permit provision
l.K and UAC R307-415-5d, and based on
information and belief formed after reasonable
inquiry, I certify that the statements and
information in this document are true, accurate,
and complete.
Ron Thayer, President
z./+/zs
Date