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Home My WebLink AboutDAQ-2025-002504 1 DAQC-465-25 Site ID 10303 (B5) MEMORANDUM TO: FILE – ASH GROVE CEMENT COMPANY THROUGH: Harold Burge, Major Source Compliance Section Manager FROM: Rob Leishman, Environmental Scientist DATE: May 14, 2025 SUBJECT: Ash Grove Cement Company (Ash Grove), Major, NSPS, Title V, Juab County, FRS # UT0000004902300015 INSPECTION TYPE: State Electronic Data Report (SEDR) Review REVIEW DATE: May 14, 2025 SOURCE LOCATION: Leamington/Juab County SOURCE CONTACT: Paul Pederson – 435-857-1260 Cody Watkins – 435-857-1283 APPLICABLE REGULATIONS: Title V Operating Permit Permit Number: 2300015005 Date of Permit: September 22, 2023 Date of Last Revision: January 28, 2025 SOURCE REVIEW EVALUATION: SOURCE INSPECTION EVALUATION: With the exception of sources that only monitor for opacity, quarterly report memoranda will only address the findings of the quarterly report. Approval Order and Title V permit conditions addressing continuous emission monitoring requirements will be addressed in Ash Grove’s relative accuracy performance specification test review memorandum. SOURCE REVIEW EVALUATION: First Quarter 2025 % Monitor Availability (MA) Performance Test Dates (N/A to Opacity) Summary of Excess Emissions During Point Source Operation Point Source Op. hrs. Channel MA CGA Lin RATA Point Source Channel Hrs. Limitation Kiln/Raw Mill 1284 NOx 99% 03/26/25 06/11/24 Kiln/Raw Mill CO 0.00 6600 lbs/hr - 1hr Kiln/Raw Mill 1284 CO 99% 03/26/25 06/11/24 Kiln/Raw Mill HCL 0.00 3.3 PPM - 30 Day rolling average 1 8 2 2 First Quarter 2025 % Monitor Availability (MA) Performance Test Dates (N/A to Opacity) Summary of Excess Emissions During Point Source Operation Point Source Op. hrs. Channel MA CGA Lin RATA Point Source Channel Hrs. Limitation Kiln/Raw Mill 1284 Flow 100% Kiln/Raw Mill Hg 0.00 55 Lbs/ton clinker - 30 Day rolling average Kiln/Raw Mill 1284 THC 99% 03/26/25 06/11/24 Kiln/Raw Mill NOx 48.00 2.8 Lbs/ton clinker - 30 Day rolling average Kiln/Raw Mill 1284 Hg 98% 03/28/25 06/11/24 Kiln/Raw Mill THC 24.00 25.2 PPM - 30 Day rolling average Kiln/Raw Mill 1284 HCl 99% 12/16/24 06/11/24 Excess Emission Report - Hourly Summary Point Source Channel Startup & Shutdown Control Equipment Problems Process Problems Other Known Causes Unknown Causes Emission Limit Kiln/Raw Mill CO 0 0 0 0 0 6600 lbs/hr - 1hr Kiln/Raw Mill HCL 0 0 0 0 0 3.3 PPM - 30 Day rolling average Kiln/Raw Mill Hg 0 0 0 0 0 55 Lbs/ton clinker - 30 Day rolling average Kiln/Raw Mill NOx 0 0 0 0 48 2.8 Lbs/ton clinker - 30 Day rolling average Kiln/Raw Mill THC 0 0 0 0 24 25.2 PPM - 30 Day rolling average CMS Performance Summary - Hourly Summary Point Source Channel Monitor Malfunction Non-monitor Malfunction QA Calibrations Other Known Causes Unknown Causes Kiln/Raw Mill NOx 2 1 3 2 1 Kiln/Raw Mill CO 2 1 3 2 1 Kiln/Raw Mill Flow 0 0 0 0 0 Kiln/Raw Mill THC 0 0 0 7 2 Kiln/Raw Mill Hg 0 0 0 20 0 Kiln/Raw Mill HCl 0 0 0 9 2 Pollutant Concentration Exceeded Span of CEM Monitor Outage During Point Source Operation Alternate Sampling CEM Modifications 0 Hours 0 Hours 0 Hours 0 Events 3 SUMMARY EVALUATION: Ash Grove maintains its CEMS as required in R307-170 and 40 CFR 60.13. RECOMMENDATIONS: All deviations appear to be a result of breakdown or process related problems that do not warrant issuing a violation. Periods of excess emissions that were recorded by the CMS in service on each point source during this reporting period are summarized in the SEDR and described in Pivot Table 400 “Excess Emissions Review.” Ash Grove was in compliance during this reporting period. No further enforcement actions should be taken. Ash Grove’s NSPS monitoring system meets the performance standards of 40 CFR 60, Appendix B Performance Specifications. HPV: No RECOMMENDATIONS: Check DAS for daily zero and span drift. Check the QC program to ensure that monitor drift is being tracked and that the source can identify excessive drift. ATTACHMENTS: Excel spreadsheet review Ash Grove EER 1Q2025 Point Source Information Late Expired Cal. Gas Valid Cal. Gas Days Yes No 1 Type Code 100 (Company Information)Type Code Company Manager Company Name AIRS # Phone Number Environmental Contact1 100 Josh Nelson 02300015 (435) 857-1283 Cody Watkins 1 100 0 0 0 0 1 Type Code 110 (Point Source Identification)Type Code Point Source Quarter 1 - 4 Year Point Source Operating Hrs. in Quarter 1 110 1 2025 1284 1 110 0 0 0 1 Type Code 200(Monitor Identification)Type Code Point Source Channel Manufacturer Model No. Monitor SN Low Span High Span Installation Date Monitor Location 1 200 CO California Analytical Instruments600 FTIR Z06009 0 5000 1/1/2014 Stack 1 200 Flow Teledyne Monitor Labs 150X 1500078 0 500 11/1/2003 Stack 1 200 HCl California Analytical Instruments600 FTIR Z06009 0 10 1/1/2014 Stack 1 200 Hg Thermo Scientific 80i 1216753345 0 300 5/1/2015 Stack 1 200 NOx California Analytical Instruments600 FTIR Z06009 0 1000 1/1/2014 Stack 1 200 O2 Ametek 650 10217573A 0 22 1/1/2014 Stack 1 200 THC California Analytical Instruments600 HFID Z06007 0 50 1/1/2015 Stack 1 200 0 0 0 0 0 0 1/0/1900 0 1 Type Code310(Excess Emissions) SUMMARY REPORT Type Code Channel Total Hours of Excess Emissions Excess Emissions - % of Total Operating Hours RC 701 Hours - start up/Shutdown RC 702 Hours-Control Equipment Problems RC 703 Hours - Process Problems RC 704, 706, 707 Hours -Other Known Causes RC 705 Hours -Unknown Causes Emission Limitation Emission Limitation Units Emission Limitation Averaging Period1 TRUE 310 CO 0 0.00% 0 0 0 0 0 6600 lbs/hr 1hr 1 TRUE 310 HCL 0 0.00% 0 0 0 0 0 3.3 PPM 30 Day rolling average 1 TRUE 310 Hg 0 0.00% 0 0 0 0 0 55 Lbs/ton clinker30 Day rolling average 1 TRUE 310 NOx 48 3.74% 0 0 0 0 48 2.8 Lbs/ton clinker30 Day rolling average 1 TRUE 310 THC 24 1.87% 0 0 0 0 24 25.2 PPM 30 Day rolling average 1 310 0 0 0 0 0 0 0 0 0 1 Type Code 300 (CMS Performance Summary) Type Code Channel Point Source Operating Hours Downtime - % of Total Operating Hours Total CMS Downtime RC 721 Hours - Monitor Malfunction RC 722 Hours - Non-monitor Malfunction RC 723 Hours - QA Calibrations RC 724 Hours - Other Known Causes RC 725 Hours - Unknown Causes1 TRUE 300 NOx 1284 0.70% 9 2 1 3 2 1 1 TRUE 300 CO 1284 0.70% 9 2 1 3 2 1 1 TRUE 300 Flow 1284 0.00% 0 0 0 0 0 0 1 TRUE 300 THC 1284 0.70% 9 0 0 0 7 2 1 TRUE 300 Hg 1284 1.56% 20 0 0 0 20 0 1 TRUE 300 HCl 1284 0.86% 11 0 0 0 9 2 1 300 0 0 0 0 0 0 1 Type Code 250(Performance Specification RATA Results) Type Code Channel Date of Most Current RATA Date of Preceding RATA Months Between RATA's Units of Measurement CEM Value Reference Method Value Relative accuracy Pass/ Fail 1 357 Days 250 Hg 06/11/24 06/20/23 12 ug/scm 0.84 0.68 0.23% Pass 1 357 Days 250 NOx 06/11/24 06/20/23 12 ppmvw 231.2 201.8 15.64% Pass 1 357 Days 250 O2 06/11/24 06/20/23 12 0 9.1 9.1 2.36% Pass 1 357 Days 250 CO 06/11/24 06/20/23 12 lb/hr 674.5 668.5 6.11% Pass 1 357 Days 250 THC 06/11/24 06/20/23 12 ppmdv 13.9 13.8 1.41% Pass 1 357 Days 250 HCl 06/11/24 06/20/23 12 ppm 0.34 0.37 7.73% Pass 1 0 Days 250 0 01/00/00 01/00/00 0 0 0 0 0.00% 0 1 Type Code 260 (CGA Results)Type Code Channel Date Audit Point No. Cylinder ID Cylinder Expiration Date Type of Certification Units of Measurement CEM Value Cylinder Value Precision %Pass/ Fail Range - High or Low1 Valid Cal. Gas 260 CO 03/26/25 1 ALM017205 05/31/32 P1 PPM 1258.3 1255 100.30% Pass Low 1 Valid Cal. Gas 260 CO 03/26/25 2 CC259232 09/18/31 P1 PPM 2563.8 2778 92.30% Pass High 1 Valid Cal. Gas 260 HCl 12/16/24 1 CC515871 03/03/25 P1 PPM 2.25 2.61 86.20% Pass low 1 Valid Cal. Gas 260 HCl 12/16/24 2 DT0048522 05/24/26 P1 PPM 5.67 5.48 103.40% Pass High 1 Valid Cal. Gas 260 Hg 03/28/25 1 81i-H 1216753345HG generator P1 PPM 4.55 4.93 92.40% Pass low 1 Valid Cal. Gas 260 Hg 03/28/25 2 81i-H 1216753345HG generator P1 PPM 10.33 10.91 94.70% Pass High 1 Valid Cal. Gas 260 NOx 03/26/25 1 ALM017205 05/31/32 P1 PPM 257.9 253 101.90% Pass Low 1 Valid Cal. Gas 260 NOx 03/26/25 2 CC259232 09/18/31 P1 PPM 545.8 566.4 96.40% Pass High 1 Valid Cal. Gas 260 O2 03/26/25 1 EB0140873 04/11/30 P1 PPM 5.01 4.96 101.10% Pass Low 1 Valid Cal. Gas 260 O2 03/26/25 2 ALM014013 04/09/32 P1 PPM 11.44 11.37 100.60% Pass High 1 Valid Cal. Gas 260 THC 03/26/25 1 CC702221 04/25/30 P1 PPM 13 12.1 107.40% Pass Low 1 Valid Cal. Gas 260 THC 03/26/25 2 CC91844 03/30/31 P1 PPM 28.9 27 107.00% Pass High 1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0 1 Type Code 270 (Linearity Test Results)Type Code Channel Date Audit Point No. Cylinder ID Cylinder Expiration Date Type of Certification Units of Measurement CEM Value Cylinder Value Precision %Pass/ Fail Range - High or Low 1 270 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0 1 Type Code 210 (Pollutant Concentration Exceeded Span of CEM) Type Code Channel Start Date Start Time End Date End Time Hours 1 0 210 0 1/0/00 0:00 1/0/00 0:00 1 1 None Reported 1 0 TC 220 Hours 0.00 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00 1 58.00 TC 300 Hours 58.00 FALSE None Reported None Reported None Reported None Reported None Reported None Reported Point Source Point Source Point Source Point Source Point Source Point Source None Reported Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill 0 Kiln/Raw Mill 0 0 Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill 0 Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Type Code 550 (Changes in Operation in Control Equipment When CEM Data Not Available) Type Code 500 (Boiler Operating Days w/o 18 Hours of Data) Ash Grove Cement Company 0 Type Code 450(Data Excluded) Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill 0 0 Kiln/Raw Mill Kiln/Raw Mill Type Code 210 (Pollutant Concentration Exceeded Span of CEM) Type Code 220 (Monitor Outage During Point Source Operation) Type Code 230 (Manual Sample - AlternateSampling During Monitor Outage) Type Code 240(CEM Modifications) Type Code 530 (Excess Emissions During Emergency Conditions) Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill Kiln/Raw Mill 0 0 Ash Grove EER 1Q2025 Relative Accuracy Overview Point Source Channel Date of Most Current RATA Date of Preceding RATA Months Between RATA's Units Measured CEM Value Reference Method Value Relative Accuracy Pass/ Fail Kiln/Raw Mill Hg 06/11/24 06/20/23 12 ug/scm 0.84 0.68 0.23% Pass Kiln/Raw Mill NOx 06/11/24 06/20/23 12 ppmvw 231.2 201.80 15.64% Pass Kiln/Raw Mill O2 06/11/24 06/20/23 12 9.1 9.10 2.36% Pass Kiln/Raw Mill CO 06/11/24 06/20/23 12 lb/hr 674.5 668.50 6.11% Pass Kiln/Raw Mill THC 06/11/24 06/20/23 12 ppmdv 13.9 13.80 1.41% Pass Kiln/Raw Mill HCl 06/11/24 06/20/23 12 ppm 0.34 0.37 7.73% Pass NSPS CGA First 2025 Audit Gas Ranges Audit Gas Ranges AP1 Low AP2 Low AP1 High AP2 High Kiln/Raw Mill CO 3/26/25 5000 1255 1000 to 1500 Kiln/Raw Mill CO 3/26/25 5000 2778 2500 to 3000 Kiln/Raw Mill HCl 12/16/24 10 2.61 5 to 6 Kiln/Raw Mill HCl 12/16/24 10 5.48 8 to 12 Kiln/Raw Mill Hg 3/28/25 300 4.93 60 to 90 Kiln/Raw Mill Hg 3/28/25 300 10.91 150 to 180 Kiln/Raw Mill NOx 3/26/25 1000 253 200 to 300 Kiln/Raw Mill NOx 3/26/25 1000 566.4 500 to 600 Kiln/Raw Mill O2 3/26/25 22 4.96 4 to 6 Kiln/Raw Mill O2 3/26/25 22 11.37 8 to 12 Kiln/Raw Mill THC 3/26/25 50 12.1 10 to 15 Kiln/Raw Mill THC 3/26/25 50 27 25 to 30 Point Source Channel Audit Date Low Span Audit Gas Used High Span Audit Gas Used Ash Grove EER 1Q2025 Monitoring Information TC 210, 230, & 240 Type Code 210 (Pollutant Concentration Exceeded Span of CEM) - 500 (All) * Sum of Hours Column Labels Row Labels (blank) Grand Total (blank)0 0 Grand Total 0 0 * Type Code 230 (Manual Sample - Alternate Sampling During Monitor Outage) - 500 (All) * Sum of Hours Column Labels Row Labels (blank) Grand Total (blank)0 0 Grand Total 0 0 * Type Code 240 (CEM Modifications) - 100 (All) * Count of Channel Column Labels Row Labels (blank) Grand Total (blank) (blank) Grand Total Ash Grove EER 1Q2025 Type Code 220 (Monitor Outage During Point Source Operation) - 600 (All) * Sum of Hours Column Labels Row Labels (blank) Grand Total (blank) (blank) 0 0 Grand Total 0 0 Ash Grove EER 1Q2025 NOx * NOx Type Code 420 (NOx) - 6000 (All) NOx * NOx Count of Magnitude of Emissions Column Labels NOx Row Labels Grand Total NOx Grand Total CO * CO Type Code 440 (CO) - 6000 (All) CO * CO Count of Magnitude of Emissions Column Labels CO Row Labels Grand Total CO Grand Total VOC/THC * VOC/THC Type Code 460 (VOC/THC) - 6000 (All) VOC/THC * VOC/THC Count of Magnitude of Emissions Column Labels VOC/THC Row Labels Grand Total VOC/THC Grand Total O2 * O2 Type Code 470 (TRS as O2) - 6000 (All) O2 * O2 Count of Magnitude of Emissions Column Labels O2 Row Labels Grand Total O2 Grand Total Hg * Hg Type Code 480 (Hg Mercury) - 6000 (All) Hg * Hg Count of Magnitude of Emissions Column Labels Hg Row Labels Grand Total Hg Grand Total HCl * HCl Type Code 401 HCl - 6000 (All) HCl * HCl Count of Magnitude of Emissions Column Labels HCl Row Labels Grand Total HCl Grand Total Ash Grove EER 1Q2025 Type Code 500 Before February 28, 2005 (Boiler Operating Days w/o 18 Hours of Data) After February 28, 2005 (90% Operating Hours For each 30 BOD) - 500 (All) * Count of Channel Column Labels Row Labels Grand Total Grand Total * Type Code 510 (F-factor, Equations & Conversion Factors) - 500 (All) Count of F-factor Column Labels Row Labels Grand Total Grand Total * Type Code 520 (Minimum Data Not Obtained <22/30 BODs) - 500 (All) Count of Channel Column Labels Row Labels Grand Total Grand Total * Type Code 530 (Excess Emissions During Emergency Conditions) - 500 (All) Count of Date Column Labels Row Labels Grand Total Grand Total * Type Code 540 (Fuel Pre-treatment Credit SO2) - 500 (All) Count of Date Column Labels Row Labels Grand Total Grand Total * TypeCode 550 (Changes in Operation in Control Equipment When CEM Data Not Available) - 500 (All) Column Labels Row Labels Grand Total Grand Total