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Home My WebLink AboutDAQ-2024-012018 1 DAQC-1210-24 Site ID 10892 (B5) MEMORANDUM TO: FILE – ST. GEORGE CITY POWER – Millcreek Turbine THROUGH: Harold Burge, Major Source Compliance Section Manager FROM: Rob Leishman, Environmental Scientist DATE: December 6, 2024 SUBJECT: St. George City Power – Millcreek Turbine, Major, NSPS, HAPs, Title IV, and Title V, Washington County, FRS # UT00000049005300011 INSPECTION TYPE: State Electronic Data Report (SEDR) Review REVIEW DATE: December 6, 2024 SOURCE LOCATION: St. George/Washington County SOURCE CONTACT: Brian Dial – 435-627-4000 APPLICABLE REGULATIONS: Title V Operating Permit Permit Number: 5300011006 Date of Permit: April 24, 2014 Date of Last Revision: April 24, 2014 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 St. George City Power’s Millcreek Turbine’s relative accuracy performance specification test review memorandum. 1 8 2 2 SEDR Review: Third Quarter 2024 % 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 MC-2 1660 O2 100% 07/10/24 04/18/24 MC-2 CO 0.00 5.21 lb/hr - 1- Hour Avg MC-2 1660 CO 100% 07/10/24 04/18/24 MC-2 CO 0.00 6 ppmvdc - 1- Hour Avg MC-2 1660 NOx 100% 07/10/24 07/10/24 04/18/24 MC-2 NOx 0.00 1.2 lb/MWHour - 30-Day RA MC-2 NOx 0.00 1.2 lb/MWHour - 4-Hour RA MC-2 NOx 0.00 46 lb/hr - 1- Hour Avg (SU/SD) MC-2 NOx 0.00 3.6 lb/hr - 30- Day RA MC-2 NOx 0.00 25 ppmvdc - 1-Hour Avg MC-2 NOx 0.00 25 ppmvdc - 30-Day RA MC-2 NOx 0.00 2.5 ppmvdc - 30-Day RA Excess Emission Report - Hourly Summary Point Source Channel Startup & Shutdown Control Equipment Problems Process Problems Other Known Causes Unknown Causes Emission Limit MC-2 CO 0 0 0 0 0 5.21 lb/hr - 1-Hour Avg MC-2 CO 0 0 0 0 0 6 ppmvdc - 1-Hour Avg MC-2 NOx 0 0 0 0 0 1.2 lb/MWHour - 30-Day RA MC-2 NOx 0 0 0 0 0 1.2 lb/MWHour - 4-Hour RA MC-2 NOx 0 0 0 0 0 46 lb/hr - 1-Hour Avg (SU/SD) MC-2 NOx 0 0 0 0 0 3.6 lb/hr - 30-Day RA MC-2 NOx 0 0 0 0 0 25 ppmvdc - 1-Hour Avg MC-2 NOx 0 0 0 0 0 25 ppmvdc - 30-Day RA MC-2 NOx 0 0 0 0 0 2.5 ppmvdc - 30-Day RA 3 CMS Performance Summary - Hourly Summary Point Source Channel Monitor Malfunction Non-monitor Malfunction QA Calibrations Other Known Causes Unknown Causes MC-2 O2 0 0 0 0 0 MC-2 CO 0 0 0 0 0 MC-2 NOx 0 0 0 0 0 Pollutant Concentration Exceeded Span of CEM Monitor Outage During Point Source Operation Alternate Sampling CEM Modifications 0 Hours 0 Hours 0 Hours 0 Events SOURCE INSPECTION SUMMARY EVALUATION: St. George City Power’s Millcreek Turbine maintains its CEMS as required in R307-170 and 40 CFR 60.13. CURRENT 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.” St. George City Power’s Millcreek Turbine was in compliance during this reporting period. The monitoring system meets the performance standards of 40 CFR 60, Appendix B Performance Specifications. No further enforcement actions are recommended. St. George City Power’s Millcreek Turbine acid rain monitoring system meets the performance standards of 40 CFR 75 Acid Rain Performance Specifications. HIGH PRIORITY VIOLATOR (HPV): No RECOMMENDATION FOR NEXT INSPECTION: Check DAS for daily zero and span drift. ATTACHMENTS: Excel spreadsheet review St George Power EER 3Q2024v2 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 Contact 1 100 Bryan Dial 05300066 435-627-4800 Melissa Armer 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 Quarter1 110 3 2024 1660 1 110 0 0 0 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 Location1 200 CO Teledyne M300 2156 10 1000 4/30/2010 Stack 1 200 NOx Teledyne M200EM 456 8 150 4/30/2010 Stack 1 200 O2 Teledyne M300 2156 0 25 4/30/2010 Stack 1 200 0 0 0 0 0 0 1/0/1900 0 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 5.21 lb/hr 1-Hour Avg 1 TRUE 310 CO 0 0.00% 0 0 0 0 0 6 ppmvdc 1-Hour Avg 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 1.2 lb/MWHour 30-Day RA 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 1.2 lb/MWHour 4-Hour RA 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 46 lb/hr 1-Hour Avg (SU/SD) 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 3.6 lb/hr 30-Day RA 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 25 ppmvdc 1-Hour Avg 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 25 ppmvdc 30-Day RA 1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 2.5 ppmvdc 30-Day RA 1 310 0 0 0 0 0 0 0 0 0 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 Causes 1 TRUE 300 O2 1660 0.00% 0 0 0 0 0 0 1 TRUE 300 CO 1660 0.00% 0 0 0 0 0 0 1 TRUE 300 NOx 1660 0.00% 0 0 0 0 0 0 1 300 0 0 0 0 0 0 1 300 0 0 0 0 0 0 1 Type Code 250(Performance SpecificationRATA 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 1 378 Days 250 CO 04/18/24 04/06/23 12 ppmvdc 0.901 0.722 426.00% Pass 1 378 Days 250 CO 04/18/24 04/06/23 12 lb/hr 0.721 0.553 408.00% Pass 1 378 Days 250 NOx 04/18/24 04/06/23 12 lb/mmBtu 0.00482 0.005 1546.00% Pass 1 378 Days 250 O2 04/18/24 04/06/23 0 0 15.496 15.511 26.00% 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 ofMeasurement CEM Value Cylinder Value Precision%Pass/ Fail Range - High or Low 1 Valid Cal. Gas 260 CO 07/10/24 Low EB0141317 01/05/25 0 ppm 2.635 2.348 1220.00% Pass LOW 1 Valid Cal. Gas 260 CO 07/10/24 Mid EB0141258 12/27/24 0 ppm 5.669 5.449 400.00% Pass LOW 1 Valid Cal. Gas 260 CO 07/10/24 Low CC741774 01/17/26 0 ppm 254.875 247 320.00% Pass HIGH 1 Valid Cal. Gas 260 CO 07/10/24 Mid CC280108 03/03/28 0 ppm 559.913 552.2 140.00% Pass HIGH 1 Valid Cal. Gas 260 NOx 07/10/24 Low EB0141317 01/05/25 0 ppm 1.798 2.055 1250.00% Pass LOW 1 Valid Cal. Gas 260 NOx 07/10/24 Mid EB0141258 12/27/24 0 ppm 4.279 4.614 730.00% Pass LOW 1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0 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 Valid Cal. Gas 270 NOx 07/10/24 Low CC741774 01/17/26 0 ppm 36.66 37.22 150.00% Pass HIGH 1 Valid Cal. Gas 270 NOx 07/10/24 Mid CC280108 03/03/28 0 ppm 82.51 83.4 110.00% Pass HIGH 1 Valid Cal. Gas 270 NOx 07/10/24 High EB0156412 08/28/31 0 ppm 139.35 138.9 30.00% Pass HIGH 1 Valid Cal. Gas 270 O2 07/10/24 Low CC408143 02/05/27 0 % 6.051 6.014 60% Pass 0 1 Valid Cal. Gas 270 O2 07/10/24 Mid CC495424 02/04/27 0 % 11.035 11.04 0% Pass 0 1 Valid Cal. Gas 270 O2 07/10/24 High Instrument Air 07/10/25 0 % 20.984 21 10% Pass 0 1 270 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0 1 270 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0 1 Type Code 210 (Pollutant ConcentrationExceeded 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 0.00 TC 300 Hours 0.00 TRUE 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 MC-2 0 0 MC-2 MC-2 MC-2 MC-2 MC-2 0 0 0 MC-2 MC-2 MC-2 Type Code 550(Changes in Operation in Control Equipment When CEM Data Not Available) Type Code 500 (Boiler Operating Daysw/o 18 Hours of Data) St. George City Power 0 Type Code 450 (Data Excluded) MC-2 MC-2 MC-2 0 0 MC-2 MC-2 MC-2 MC-2 0 MC-2 MC-2 Type Code 210 (Pollutant ConcentrationExceeded Span of CEM) Type Code 220 (Monitor OutageDuring Point Source Operation) Type Code 230(Manual Sample - Alternate Sampling During Monitor Outage) Type Code 240 (CEM Modifications) Type Code 530 (Excess Emissions During Emergency Conditions) MC-2 MC-2 MC-2 0 MC-2 MC-2 MC-2 MC-2 MC-2 0 0 MC-2 0 0 MC-2 MC-2 MC-2 MC-2 MC-2 0 St George Power EER 3Q2024v2 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 2024 MC-2 CO 04/18/24 04/06/23 12 ppmvdc 0.901 0.72 426.00% Pass MC-2 CO 04/18/24 04/06/23 12 lb/hr 0.721 0.55 408.00% Pass MC-2 NOx 04/18/24 04/06/23 12 lb/mmBtu 0.00482 0.01 1546.00% Pass MC-2 O2 04/18/24 04/06/23 15.496 15.51 26.00% Pass * NSPS CGA Third 2024 Audit Gas Ranges Audit Gas Ranges AP1 Low AP2 Low AP1 High AP2 High MC-2 CO 7/10/24 10 2.348 2 to 3 MC-2 CO 7/10/24 10 5.449 5 to 6 MC-2 CO 7/10/24 1000 247 200 to 300 MC-2 CO 7/10/24 1000 552.2 500 to 600 MC-2 NOx 7/10/24 8 2.055 1.6 to 2.4 MC-2 NOx 7/10/24 8 4.614 4 to 4.8 * Acid Rain Audit Linearity Third 2024 Low Span Gas Ranges High Span Gas Ranges Low Mid High Low Mid High MC-2 NOx 7/10/24 150 37.22 30 to 45 MC-2 NOx 7/10/24 150 83.4 75 to 90 MC-2 NOx 7/10/24 150 138.9 120 to 150 MC-2 O2 7/10/24 25 6.014 5 to 7.5 MC-2 O2 7/10/24 25 11.04 12.5 to 15 MC-2 O2 7/10/24 25 21 20 to 25 Audit Gas Used Point Source Channel Audit Date Low Span Point Source Channel Audit Date Low Span Audit Gas Used High Span Audit Gas Used High SpanAudit Gas Used St George Power EER 3Q2024v2 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 St George Power EER 3Q2024v2 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 St George Power EER 3Q2024v2 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 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 St George Power EER 3Q2024v2 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 NOx CO Grand Total MC-2 8710 1 1 2 Grand Total 1 1 2 * Type Code 520 (Minimum Data Not Obtained <22/30 BODs) - 500 (All) Count of Channel Column Labels Row Labels Grand TotalGrand 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