DAQ-2025-002211

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US Magnesium LLC
238 Nortr 2200 West - Salt L-ake crty, tII 84116-2921
801 I $2AM3 - 800 D62-9624 - FACSIMILE 801 / s34-t 407
DEPARTMENT
EItilm$iENIAL OUA[ffY
APR 1 0 2o2s
txvrsroN c An (lnunt
Via Mail
April 10,2025
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 841l4
RE: March 2025 Chlorine Emission Report Parameters - US Magnesium, LLC Rowley Facility
Dear Mr. Bird,
Please find attached the March 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,
Rob J. Hartman
Environmental Manager
US Magnesium LLC
Attachment
REVIEWED
Initials JBR Date 5/1/2025
Comp Status Meets
File # 10716 Blue 2
site shutdown zero report
US MAGNESIUM. ROWLEY FACILITY
MARCH 2025 CHLORINE EMISSIONS
Total Cl 2 = I + ,lu + EOG + Fugitives
Dete
totar ulz
Total Plant
Cl2 Emissions
Ton
E
Bypass Stack
C12 Emissions
Ton
Y
Melt Reador
Cl, Emissions
Ton
tr(J\,
EOG Stack
Cl2 Emissions
Ton
FUgrtNes
C12 Emissions
Ton
Marcn 1, zuza
March 2, 202!
March 3, 202t
March 4, 2025
March 5, 202!
March 6, 202!
March 7, 202€
March 8, 202t
March 9, 2023
March 10, 2025
March 11, 202t
March 12,202!
March 13, 202!
March 14, 202t
March 15, 202€
March 16, 202f
March 17, 202t
March 18, 202!
March 19, 202t
March 20, 2025
March21,2O2!
March 22,2021
March 23, 202t
March 24,202!
March 25, 202t
March 26, 202f
March27,2Q22
March 28, 2025
March 29,202t
March 30, 202t
March 3'1,2025
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
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IOta U.UU(0.00(0.00(0.00c 0.00(
Monthly Total
aDolied to AO llmi 0
12 tonth Rolllng Iota U
Emiesion Limit 3300
Schodulod M.int mnco Emillionr, ton.
Mat-Za o
60-mo rolllno total 1404
Brerkdown Emi!tlon3, tom
0.0
Monih
Annual
Source-wide
Cl2 Emissions
Ton
Annuat
Emission Limit
C12 Emissions
Ton
MAr-ZS
Feb-25
Jan25
Dec-24
Nov-24
ad-24
Sep-24
Aug-24
Ju!-24
Jun-24
May-24
Aor-24
U
0
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l2 Monlh t(olltnq lotal 0 0
ln accordance with Operating Permit provision l.K
and UAC R307-415-5d, and based on information
and belief formed after reasonable inquiry, I
certiry that the statements and information in
this document are true, accurate, and complete.
+l*lz< i "-. utrAH DF
Date I E NIVIRONME
MFNT
DIVISION OFAIR QUALIW