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Home My WebLink AboutDAQ-2024-008244usry. US Magnesium LLC 238 North 2200 West - Salt Lake City, UT 84116-2921 801 t532-2043 - 800t262-9624 - FACSTMTLE 801 t5U-1407 IITAH DEPARTME}'IT OF eivrnonueurru- ouAurY l,,Pri 1f iczi- l)qn ) D'olir,r€J' uivisrbn 5r run ouAln\ Hand Deliverv April 8, 2024 Mr. Bryce Bird, Director Division of Air Quality Utah Department of Environmental Quality 150 North 1950 West P.O. Box 144820 Salt Lake City, Utah 84114 RE: Title V Six Month Monitoring Report - US Magnesium, LLC, Rowley Facility, Operating Permit No. 4500030003 Dear Mr. Bird, Please find enclosed the Title V Six Month Monitoring Report for the US Magnesium, LLC facility located at Rowley, Utah. This report covers the period from October 1, 2023 to March 31,2024 for Operating Permit # 4500030003. lf you have any questions or require additiona! information, please feel free to contact me at (801) 532-1522 ext.1355. Environmental Manager US Magnesium LLC Enclosure REVIEWED Initials JBR Date 6/4/2024 Comp Status Meets File # 110716 Blue 1 cl2 plant down no dev SIX MONTH MONITORING REPORT October 112023 through March 3112024 Operating Permit # 4500030003 In accordance with Operating Permit provision I.S.2.a, and Utah Administrative Code (UAC) R3 07-4 I 5-6a(3)(c)(i), the following monitoring report is submitted. This report covers the period ftom l0lll2023 to 313112024. For the indicated reporting period: X There were no deviations from any permit requirements. tr Deviations from permit operating requirements are listed on Attachment A. The list includes the information required by Operating Permit provision I.S.2.a, and UAC R307-a I s-6a(3)(c)(i). In accordance with Operating Permit provision I.K and UAC R307-4I5-5d, 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. +lz-lz* DateRon Thayer, President US M,q.cxESruM LLC Srx MoNrn MoxrroRrNc Rrponr October 1,2023 through March 31,2024 Attachment A Chlorine Reduction Burner Absorber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded l-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped, the Chlorine Reduction Burner was down. Chlorine Reduction Burner Deviations from Operating Temperature Range Starting and ending times are for the recorded l-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped, the Chlorine Reduction Burner was down. Emergency Off-Gas Scrubber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded l-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped the Off-Gas Scrubber was down. East Packed Tower Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded l-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped the East Packed Tower was down. West Packed Tower Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded l-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped the West Packed Tower was down. ffi DIVISION OF AIR OUALITY 1 1 2A24r\ tl:l US M,I,CxESIUM LLC Sur Moxrn MoxrroRrNc Rrponr October 1,2023 through March 31,2024 High Energy Scrubber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded 1-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped, the High Scrubber was down. Spray Dryer 01 Scrubber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded 1-hour block values. Date and time I Duration" hours During this period due to magnesium production being temporarily stopped Spray 01 was down. Spray Dryer 02 Scrubber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded 1-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped Spray 02 was down. Spray Dryer 03 Scrubber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded 1-hour block values. Date and time Duration. hours During this period due to magnesium production being Drver 03 was down. 05/06 Bin Scrubber Deviations from Recirculating Flow Operating Parameter Range Starting and ending times are for the recorded 1-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped 05/06 Bin Scrubber was not in use. Attachment A Page 2 of3 US M^IcNESIUM LLC Sur Moxrn MorrrrroRrNc Rnponr October 1,2023 through March 31,2024 05/06 Bin Scrubber Deviations from Discharge Gas Temperature Operating Parameter Range Starting and ending times are for the recorded l-hour block values. Date and time I Duration. hours During this period due to magnesium production being temporarily stopped 05106 Bin Scrubber was not in use. Acid Plant Sodium Hydroxide Scrubber Deviations from rolling24-hour Average Recirculated Liquor pH Not Less Than 8.0 Operating Limit Duration is number of t hour blocks below the daily average limit for the calendar day. Acid Plant Sodium Hydroxide Scrubber Deviations from Daily Average Liquor Recirculation Rate Operating Limit Duration is number of t hour blocks below the daily average limit for the calendar day. Date Duration (hotrs) Percent Operating Hours Cause Durins this reoortine oeriod. the 36%o hvdrochloric acid plant was not in production. USM has been down since 911512022. No current plans on operation coming up prior to June 2026. Date Duration ftours) Percent Operating Hours Cause Durins this reoortine oeriod. the 36oh hvdrochloric acid plant was not in production. Attachment A Page 3 of3