DAQ-2024-011481

1
DAQC-1117-24
Site ID 10122 (B5)

MEMORANDUM

TO: FILE – BIG WEST OIL COMPANY

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: November 5, 2024

SUBJECT: Big West Oil Company – Major, Title V, MACT, NSPS, NESHAPS, HAPs, Title V,
Davis County, FRS # UT00000049001100008
INSPECTION TYPE: State Electronic Data Report (SEDR) Review

REVIEW DATE: November 5, 2024

SOURCE LOCATION: North Salt Lake/Davis County

SOURCE CONTACT: Brady Miller – 385-324-1275
Faithe Schwartzengraber – 801-297-7763

APPLICABLE
REGULATIONS: Approval Order (AO) dated May 6, 2024, DAQE-AN101220081-24

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 Big West Oil
Company’s relative accuracy performance specification test review
memorandum.

SOURCE REVIEW EVALUATION:

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
AMINE 2208 H2S 95% 08/19/24 12/14/23 AMINE H2S 0.00 162 PPM -
3HR
MSCC 2186 CO2 100% 07/17/24 04/11/24 AMINE H2S 0.00 60 PPM -
365D
MSCC 2186 CO 100% 07/17/24 04/11/24 MSCC CO 0.00 100 PPM -
365D
MSCC 2186 NOx 100% 07/17/24 04/11/24 MSCC CO 0.00 500 PPM -
001H

1 8 2

2
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
MSCC 2186 O2 100% 07/17/24 04/11/24 MSCC CO 0.00
500 PPM -
001H
Corrected to
0% O2
MSCC 2186 Opacity 100% MSCC NOx 0.00
60 PPM -
007D
Corrected to
0% O2
MSCC 2186 SO2 100% 07/17/24 04/11/24 MSCC NOx 0.00 40 PPM -
365D
NVRU 2192 VOC 100% 08/07/24 03/15/24 MSCC Opacity 0.00
20
PERCENT -
006M
SFLARE 2120 H2S 98% 08/05/24 12/12/23 MSCC SO2 0.00 25 PPM -
365D
SFLARE 2120 TRS 97% 08/05/24 MSCC SO2 0.00 50 PPM -
007D
SRU 2208 O2 100% 08/19/24 12/11/23 MSCC SO2 0.00
50 PPM -
007D
Corrected to
0% O2
SRU 2208 SO2 98% 08/19/24 12/11/23 NVRU VOC 0.00
1.1
PERCENT -
006H
SVRU 103 VOC 98% 08/07/24 03/15/24 SFLARE H2S 0.00 162 PPM -
3HR
WFLARE 2208 H2S 100% 08/13/24 12/13/23 SVRU VOC 0.00
1.1
PERCENT -
006H
WFLARE 2208 TRS 100% 08/13/24 WFLARE H2S 0.00 162 PPM -
3HR

Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
AMINE H2S 0 0 0 0 0 162 PPM - 3HR
AMINE H2S 0 0 0 0 0 60 PPM - 365D
MSCC CO 0 0 0 0 0 100 PPM - 365D
MSCC CO 8 0 0 0 0 500 PPM - 001H
MSCC CO 10 0 0 0 0 500 PPM - 001H Corrected
to 0% O2
MSCC NOx 0 0 0 0 0 60 PPM - 007D Corrected
to 0% O2
MSCC NOx 0 0 0 0 0 40 PPM - 365D
MSCC Opacity 0 0 0 0 0 20 PERCENT - 006M

3
Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
MSCC SO2 0 0 0 0 0 25 PPM - 365D
MSCC SO2 0 0 0 0 0 50 PPM - 007D
MSCC SO2 0 0 0 0 0 50 PPM - 007D Corrected
to 0% O2
NVRU VOC 0 0 0 0 0 1.1 PERCENT - 006H
SFLARE H2S 22 0 0 0 0 162 PPM - 3HR
SVRU VOC 0 0 0 0 0 1.1 PERCENT - 006H
WFLARE H2S 3 0 0 0 0 162 PPM - 3HR

CMS Performance Summary - Hourly Summary
Point
Source Channel Monitor
Malfunction
Non-monitor
Malfunction
QA
Calibrations
Other
Known
Causes
Unknown
Causes
AMINE H2S 98 0 2 3 0
MSCC CO2 0 0 2 0 0
MSCC CO 0 0 2 0 0
MSCC NOx 0 0 2 0 0
MSCC O2 0 0 2 0 0
MSCC Opacity 0 0 2 0 0
MSCC SO2 0 0 2 0 0
NVRU VOC 4 0 1 0 0
SFLARE H2S 39 0 1 10 0
SFLARE TRS 40 0 4 16 0
SRU O2 0 0 4 5 0
SRU SO2 25 0 4 5 0
SVRU VOC 2 0 0 0 0
WFLARE H2S 3 0 4 0 0
WFLARE TRS 3 0 5 0 0

Type Code 280 (COMS Attenuator Filters) Procedure 3
Point Source &
Location
Attenuator
I.D.
Attenuator
Certification
Date
Certified
Attenuator
Opacity
OPLR,
SECR,
or
PLCF,
Corrected
Opacity
Value
Range
Low,
Mid, &
High
Certification
1-year or 5-
year
MSCC - Opacity R95A 6/21/24 24.78 OPLR 15.71 Low 1Year
MSCC - Opacity R96A 6/21/24 36.04 OPLR 23.52 Mid 1Year
MSCC - Opacity R97A 6/21/24 63.76 OPLR 45.61 High 1Year

4
Type Code 281 (Procedure 3 - COMS Filter Audit Calibration Error)
Point
Source Location Audit Date
Opacity Monitor Response
(Average of 5) Mean Difference Calibration
Error (≤ 3%) Low Mid High
MSCC Opacity 8/14/24 16 0.190 0.190
MSCC Opacity 8/14/24 24 0.580 0.580
MSCC Opacity 8/14/24 46 0.790 0.790

Type Code 282 (Annual Zero Alignment Audit) Procedure 3
Point
Source Location Audit
Date
Alternative
Zero
Alignment
(Yes or No)
COM Clear
Condition
Zero
Response
(CCZR)
COM
Simulated
Zero
Response
(CSZR)
Zero
Alignment
Error
Difference
(CCZR)-
(CSZR)
Adjustment to
COM
Simulated
Zero Response
(CSZR)
(Yes or No)
MSCC Opacity 12/19/23 N 1.30 0 1

Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
15 Hours 301 Hours 11 Hours 0 Events

SOURCE INSPECTION
SUMMARY EVALUATION: Big West Oil Company 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. Big West Oil Company
was in compliance during this reporting period. No further enforcement
actions should be taken.

Big West Oil Company’s NSPS monitoring system meets the
performance standards of 40 CFR 60, Appendix B Performance
Specifications.

HIGH PRIORITY
VIOLATOR (HPV): No

RECOMMENDATION
FOR NEXT INSPECTION: 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
Big West EER 3Q2024
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 Alec Klinghoffer 01100008 385-324-1275 Brady Miller
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 3 2024 2208
1 110 3 2024 2186.8
1 110 3 2024 2192.3
1 110 3 2024 2120.7
1 110 3 2024 2208
1 110 3 2024 103.7
1 110 3 2024 2208
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 H2S Ametek 5100 HD _1021950 0 300 1/1/2014 Amine Unit
1 200 CO ABB Uras26 _01400301913010L50 1000 11/1/2015 MSCC Regen Vent
1 200 CO2 ABB Uras26 _01400301913010L0 25 11/1/2015 MSCC Regen Vent
1 200 NOx ABB Limas11 _400000744810 0 200 11/1/2015 MSCC Regen Vent
1 200 O2 ABB Magnos206 _01400100978401L0 10 11/1/2015 MSCC Regen Vent
1 200 Opacity Durag DR-290 _1236447 0 80 11/1/2015 MSCC Regen Vent
1 200 SO2 ABB Limas11 _400000744810 0 150 11/1/2015 MSCC Regen Vent
1 200 VOC Infrared Industries IR 8400D _5583 0 2 8/29/2019 Carbon bed exhaust
1 200 H2S EXTREL Max 300-IG _61728 0 300 1/1/2015 South Flare
1 200 TRS EXTREL Max 300-IG _61728 0 5000 1/1/2015 South Flare
1 200 O2 Emerson/Rosemount X-Stream X2 _XMF080026934350 20 10/11/2010 SRU tail Incin
1 200 SO2 Emerson/Rosemount X-Stream X2 _XMF080026934350 3.5 10/11/2010 SRU tail Incin
1 200 VOC Infrared Industries IR 8400D _3560 0 2 6/16/2011 Backup Carbon bed exhaust
1 200 H2S EXTREL Max 300-IG _61727 0 300 9/30/2020 West Flare
1 200 TRS EXTREL Max 300-IG _61727 0 5000 9/30/2020 West Flare
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
Period
1 TRUE 310 H2S 0 0.00% 0 0 0 0 0 162 PPM 3HR
1 TRUE 310 H2S 0 0.00% 0 0 0 0 0 60 PPM 365D
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 100 PPM 365D
1 TRUE 310 CO 8 0.37% 8 0 0 0 0 500 PPM 001H
1 TRUE 310 CO 10 0.46% 10 0 0 0 0 500 PPM 001H_Corrected_to_0percentO2
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 60 PPM 007D_Corrected_to_0percentO2
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 40 PPM 365D
1 TRUE 310 Opacity 0 0.00% 0 0 0 0 0 20 PERCENT 006M
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 25 PPM 365D
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 50 PPM 007D
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 50 PPM 007D_Corrected_to_0percentO2
1 TRUE 310 VOC 0 0.00% 0 0 0 0 0 1.1 PERCENT 006H
1 TRUE 310 H2S 22 1.04% 22 0 0 0 0 162 PPM 3HR
1 TRUE 310 VOC 0 0.00% 0 0 0 0 0 1.1 PERCENT 006H
1 TRUE 310 H2S 3 0.14% 3 0 0 0 0 162 PPM 3HR
1 310 0 0 0 0 0 0 0 0 0
SFLARE
SVRU
WFLARE
0
Big West Oil, LLC
0
AMINE
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
NVRU
SFLARE
SFLARE
SRU
MSCC
MSCC
MSCC
MSCC
MSCC
AMINE
AMINE
SRU
SVRU
WFLARE
WFLARE
0
MSCC
MSCC
MSCC
MSCC
NVRU
AMINE
MSCC
NVRU
SFLARE
SRU
SVRU
WFLARE
0
Point Source
Big West EER 3Q2024
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 H2S 2208 4.66% 103 98 0 2 3 0
1 TRUE 300 CO2 2186.8 0.09% 2 0 0 2 0 0
1 TRUE 300 CO 2186.8 0.09% 2 0 0 2 0 0
1 TRUE 300 NOx 2186.8 0.09% 2 0 0 2 0 0
1 TRUE 300 O2 2186.8 0.09% 2 0 0 2 0 0
1 TRUE 300 Opacity 2186.8 0.07% 1.5 0 0 1.5 0 0
1 TRUE 300 SO2 2186.8 0.09% 2 0 0 2 0 0
1 TRUE 300 VOC 2192.3 0.23% 5 4 0 1 0 0
1 TRUE 300 H2S 2120.7 2.36% 50 39 0 1 10 0
1 TRUE 300 TRS 2120.7 2.83% 60 40 0 4 16 0
1 TRUE 300 O2 2208 0.41% 9 0 0 4 5 0
1 TRUE 300 SO2 2208 1.54% 34 25 0 4 5 0
1 TRUE 300 VOC 103.7 1.93% 2 2 0 0 0 0
1 TRUE 300 H2S 2208 0.32% 7 3 0 4 0 0
1 TRUE 300 TRS 2208 0.36% 8 3 0 5 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
1 351 Days 250 VOC 03/15/24 03/30/23 12 PPM 871.07 1110.43 3.23% Pass
1 351 Days 250 VOC 03/15/24 03/30/23 12 PPM 151.91 288.9 1.88% Pass
1 28 Days 250 O2 04/11/24 03/14/24 1 PCT 0.85 0.89 0.00% Pass
1 28 Days 250 CO2 04/11/24 03/14/24 1 PCT 17.19 16.56 0.60% Pass
1 28 Days 250 SO2 04/11/24 03/14/24 1 PPM 25.15 26.95 9.10% Pass
1 28 Days 250 NOx 04/11/24 03/14/24 1 PPM 28.45 32.44 15.90% Pass
1 28 Days 250 CO 04/11/24 03/14/24 1 PPM 31.95 28.08 0.90% Pass
1 370 Days 250 SO2 12/11/23 12/06/22 12 PPM 3408 3828 11.71% Pass
1 370 Days 250 O2 12/11/23 12/06/22 12 PCT 8.73 8.76 0.51% Pass
1 374 Days 250 H2S 12/14/23 12/05/22 12 PPM 6.16 2.57 2.96% Pass
1 370 Days 250 H2S 12/12/23 12/07/22 12 PPM 14.25 6.16 6.62% Pass
1 370 Days 250 H2S 12/13/23 12/08/22 12 PPM 15.84 0.08 9.85% 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
Low
1 Valid Cal. Gas 260 H2S 08/19/24 1 ALM020953 06/14/25 EPA PPM 76.13333333 75.98 0.20% Pass Low
1 Valid Cal. Gas 260 H2S 08/19/24 2 CC166283 11/06/26 EPA PPM 168.1666667 164.7 2.10% Pass High
1 Valid Cal. Gas 260 CO 07/17/24 1 SG9103271BAL 04/06/28 EPA PPM 254.88 245.9 3.65% Pass Low
1 Valid Cal. Gas 260 CO 07/17/24 2 CC334248 04/06/28 EPA PPM 549.4133333 536.8 2.35% Pass High
1 Valid Cal. Gas 260 CO2 07/17/24 1 SG9103271BAL 04/06/28 EPA PCT 6.323333333 6.42 1.51% Pass Low
1 Valid Cal. Gas 260 CO2 07/17/24 2 CC334248 04/06/28 EPA PCT 11.85 11.95 0.84% Pass High
1 Valid Cal. Gas 260 NOx 07/17/24 1 CC288910 05/11/26 EPA PPM 50.33333333 50.35 0.03% Pass Low
1 Valid Cal. Gas 260 NOx 07/17/24 2 CC453941 03/04/32 EPA PPM 117.3 116.5 0.69% Pass High
1 Valid Cal. Gas 260 O2 07/17/24 1 SG9103271BAL 04/06/28 EPA PCT 5.056666667 5.011 0.91% Pass Low
1 Valid Cal. Gas 260 O2 07/17/24 2 CC334248 04/06/28 EPA PCT 11.02 11 0.18% Pass High
1 Valid Cal. Gas 260 SO2 07/17/24 1 CC123684 03/25/26 EPA PPM 35.4 36.13 2.02% Pass Low
1 Valid Cal. Gas 260 SO2 07/17/24 2 EB0098522 04/22/32 EPA PPM 86 84.96 1.22% Pass High
1 Valid Cal. Gas 260 VOC 08/07/24 1 CC476442 06/06/30 EPA PCT 0.005 0.00502 0.40% Pass Low
1 Valid Cal. Gas 260 VOC 08/07/24 2 EB0063698 01/09/31 EPA PCT 0.0109 0.01096 0.55% Pass High
1 Valid Cal. Gas 260 H2S 08/05/24 1 ALM040307 10/28/25 NIST PPM 76.83 74.23 3.51% Pass Low
1 Valid Cal. Gas 260 H2S 8/5/24 2 CC102871 5/10/27 NIST PPM 172 170 0 Pass High
1 Valid Cal. Gas 260 TRS 8/5/24 1 CC132654 9/23/24 NIST PPM 1,218 1,211 0 Pass Low
1 Valid Cal. Gas 260 TRS 8/5/24 2 SG9150992BAL 2/26/25 NIST PPM 2,757 2,737 0 Pass High
1 Valid Cal. Gas 260 O2 8/19/24 1 ALM042603 4/27/26 EPA PCT 5 5 0 Pass Low
1 Valid Cal. Gas 260 O2 8/19/24 2 EB0140925 7/31/31 EPA PCT 11 11 0 Pass High
1 Valid Cal. Gas 260 SO2 8/19/24 1 CC33734 11/20/27 EPA PCT 1 1 0 Pass Low
1 Valid Cal. Gas 260 SO2 8/19/24 2 XC032805B 4/4/32 EPA PCT 2 2 0 Pass High
1 Valid Cal. Gas 260 VOC 8/7/24 1 CC476442 6/6/30 EPA PCT 0 0 0 Pass Low
1 Valid Cal. Gas 260 VOC 8/7/24 2 CC505291 9/22/30 EPA PCT 0 0 0 Pass High
1 Valid Cal. Gas 260 H2S 8/13/24 1 ALM040307 10/28/25 NIST PPM 77 74 0 Pass Low
1 Valid Cal. Gas 260 H2S 8/13/24 2 CC329751 5/5/25 NIST PPM 171 170 0 Pass High
1 Valid Cal. Gas 260 TRS 8/13/24 1 CC132654 9/23/24 NIST PPM 1,218 1,211 0 Pass Low
1 Valid Cal. Gas 260 TRS 8/13/24 2 CC403163 10/11/24 NIST PPM 2,749 2,744 0 Pass High
1 260 0 1/0/00 0 0 1/0/00 0 0 0 0 0 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 00
WFLARE
WFLARE
WFLARE
WFLARE
0
MSCC
MSCC
SVRU
SVRU
NVRU
MSCC
MSCC
MSCC
MSCC
MSCC
SRU
SRU
SRU
SFLARE
SVRU
MSCC
MSCC
MSCC
MSCC
NVRU
WFLARE
0
SVRU
SFLARE
SFLARE
SRU
SRU
WFLARE
WFLARE
0
MSCC
MSCC
MSCC
MSCC
NVRU
AMINE
MSCC
MSCC
MSCC
SRU
SRU
AMINE
SFLARE
AMINE
AMINE
Point Source
Point Source
Point Source
Point Source
MSCC
MSCC
MSCC
NVRU
SFLARE
SFLARE
SFLARE
SRU
Big West EER 3Q2024
1 Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code Channel Start Date Start Time End Date End Time Hours
1 15 210 VOC 7/24/24 1:16 7/24/24 1:17 0.02
1 15 210 VOC 8/14/24 1:23 8/14/24 1:24 0.02
1 30 210 VOC 9/26/24 16:05 9/26/24 16:06 0.02
1 TRUE 210 SO2 9/12/24 0:43 9/12/24 0:44 0.02
1 210 SO2 9/23/24 8:49 9/23/24 8:50 0.02
1 210 CO 7/10/24 8:32 7/10/24 8:33 0.02
1 210 CO 7/15/24 18:06 7/15/24 18:07 0.02
1 210 CO 9/23/24 7:42 9/23/24 7:52 0.17
1 210 CO 9/23/24 10:26 9/23/24 10:27 0.02
1 210 CO 9/23/24 10:46 9/23/24 10:50 0.07
1 210 CO 9/23/24 10:56 9/23/24 11:06 0.17
1 210 CO 9/23/24 11:17 9/23/24 11:18 0.02
1 210 CO 9/23/24 11:34 9/23/24 11:46 0.20
1 210 CO 9/23/24 11:47 9/23/24 12:01 0.23
1 210 CO 9/23/24 12:19 9/23/24 12:24 0.08
1 210 CO 9/23/24 12:32 9/23/24 12:33 0.02
1 210 CO 9/23/24 12:34 9/23/24 12:37 0.05
1 210 CO 9/23/24 12:45 9/23/24 13:06 0.35
1 210 CO 9/23/24 13:37 9/23/24 13:39 0.03
1 210 CO 9/23/24 13:47 9/23/24 13:52 0.08
1 210 CO 9/23/24 13:55 9/23/24 13:56 0.02
1 210 CO 9/23/24 15:51 9/23/24 15:57 0.10
1 210 CO 9/23/24 16:14 9/23/24 16:21 0.12
1 210 CO 9/23/24 16:31 9/23/24 17:35 1.07
1 210 CO 9/23/24 18:12 9/23/24 18:22 0.17
1 210 CO 9/24/24 1:37 9/24/24 2:23 0.77
1 210 CO 9/24/24 3:47 9/24/24 3:52 0.08
1 210 CO 9/24/24 3:53 9/24/24 3:54 0.02
1 210 CO 9/24/24 4:48 9/24/24 4:49 0.02
1 210 CO 9/24/24 6:20 9/24/24 6:21 0.02
1 210 CO 9/25/24 1:48 9/25/24 1:49 0.02
1 210 SO2 9/23/24 7:41 9/23/24 8:07 0.43
1 210 SO2 9/23/24 8:16 9/23/24 8:17 0.02
1 210 SO2 9/23/24 8:33 9/23/24 8:34 0.02
1 210 SO2 9/23/24 10:26 9/23/24 10:28 0.03
1 210 SO2 9/23/24 10:38 9/23/24 11:12 0.57
1 210 SO2 9/23/24 11:17 9/23/24 11:18 0.02
1 210 SO2 9/23/24 15:30 9/23/24 15:43 0.22
1 210 SO2 9/23/24 18:14 9/23/24 18:21 0.12
1 210 H2S 8/2/24 13:15 8/2/24 13:25 0.17
1 210 H2S 9/3/24 12:28 9/3/24 12:47 0.32
1 210 H2S 9/23/24 8:02 9/23/24 8:16 0.23
1 210 H2S 9/23/24 8:36 9/23/24 8:57 0.35
1 210 H2S 7/24/24 6:49 7/24/24 7:05 0.27
1 210 H2S 8/31/24 4:21 8/31/24 4:31 0.17
1 210 H2S 9/1/24 15:08 9/1/24 15:10 0.03
1 210 H2S 9/23/24 7:47 9/23/24 8:34 0.78
1 210 H2S 9/23/24 16:05 9/23/24 17:57 1.87
1 210 H2S 9/23/24 18:04 9/23/24 19:54 1.83
1 210 H2S 9/24/24 0:48 9/24/24 1:57 1.15
1 210 H2S 9/24/24 2:04 9/24/24 2:22 0.30
1 210 H2S 9/24/24 2:28 9/24/24 2:40 0.20
1 210 H2S 9/24/24 4:54 9/24/24 5:02 0.13
1 210 TRS 9/23/24 7:49 9/23/24 8:01 0.20
1 210 TRS 9/23/24 16:33 9/23/24 17:08 0.58
1 210 TRS 9/23/24 18:40 9/23/24 19:30 0.83
1 210 TRS 9/24/24 0:50 9/24/24 1:03 0.22
1 210 0 1/0/00 0:00 1/0/00 0:00
1
1 Yes
1 15.05 TC 220 Hours 300.50 TC 220 Hours 11.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 289.50 TC 300 Hours 0.00 TRUE
SFLARE
SFLARE
SFLARE
SFLARE
SFLARE
SFLARE
SFLARE
SFLARE
0
WFLARE
WFLARE
WFLARE
SFLARE
SFLARE
SFLARE
SFLARE
SFLARE
SFLARE
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
WFLARE
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
MSCC
SVRU
SVRU
SVRU
MSCC
MSCC
MSCC
Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code 220
(Monitor Outage
During 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)
Type Code 450
(Data Excluded)
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)
SRU
SRU
Point Source
Yes Yes None Reported None Reported None Reported None Reported None Reported
Big West EER 3Q2024
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
NVRU VOC 03/15/24 03/30/23 12 PPM 871.07 1110.43 3.23% Pass
SVRU VOC 03/15/24 03/30/23 12 PPM 151.91 288.90 1.88% Pass
MSCC O2 04/11/24 03/14/24 1 PCT 0.85 0.89 0.00% Pass
MSCC CO2 04/11/24 03/14/24 1 PCT 17.19 16.56 0.60% Pass
MSCC SO2 04/11/24 03/14/24 1 PPM 25.15 26.95 9.10% Pass
MSCC NOx 04/11/24 03/14/24 1 PPM 28.45 32.44 15.90% Pass
MSCC CO 04/11/24 03/14/24 1 PPM 31.95 28.08 0.90% Pass
SRU SO2 12/11/23 12/06/22 12 PPM 3408 3828.00 11.71% Pass
SRU O2 12/11/23 12/06/22 12 PCT 8.73 8.76 0.51% Pass
AMINE H2S 12/14/23 12/05/22 12 PPM 6.16 2.57 2.96% Pass
SFLARE H2S 12/12/23 12/07/22 12 PPM 14.25 6.16 6.62% Pass
WFLARE H2S 12/13/23 12/08/22 12 PPM 15.84 0.08 9.85% Pass
*
NSPS CGA Third 2024
Audit Gas Ranges Audit Gas Ranges
AP1 Low AP2 Low AP1 High AP2 High
AMINE H2S 8/19/24 300 75.98 60 to 90
AMINE H2S 8/19/24 300 164.7 150 to 180
MSCC CO 7/17/24 1000 245.9 200 to 300
MSCC CO 7/17/24 1000 536.8 500 to 600
MSCC CO2 7/17/24 25 6.42 5 to 8
MSCC CO2 7/17/24 25 11.95 10 to 14
MSCC NOx 7/17/24 200 50.35 40 to 60
MSCC NOx 7/17/24 200 116.5 100 to 120
MSCC O2 7/17/24 10 5.011 4 to 6
MSCC O2 7/17/24 10 11 8 to 12
MSCC SO2 7/17/24 150 36.13 30 to 45
MSCC SO2 7/17/24 150 84.96 75 to 90
NVRU VOC 8/7/24 2 0.00502 0.4 to 0.6
NVRU VOC 8/7/24 2 0.01096 1 to 1.2
SFLARE H2S 8/5/24 300 74.23 60 to 90
SFLARE H2S 8/5/24 300 169.6 150 to 180
SFLARE TRS 8/5/24 5000 1211.1 1000 to 1500
SFLARE TRS 8/5/24 5000 2736.9 2500 to 3000
SRU O2 8/19/24 20 5.204 4 to 6
SRU O2 8/19/24 20 11.06 8 to 12
SRU SO2 8/19/24 3.5 0.9 0.7 to 1.05
SRU SO2 8/19/24 3.5 1.767 1.75 to 2.1
SVRU VOC 8/7/24 2 0.0054 0.4 to 0.6
SVRU VOC 8/7/24 2 0.010933333 1 to 1.2
WFLARE H2S 8/13/24 300 74.23 60 to 90
WFLARE H2S 8/13/24 300 169.7 150 to 180
WFLARE TRS 8/13/24 5000 1211.1 1000 to 1500
WFLARE TRS 8/13/24 5000 2744.2 2500 to 3000
*
Type Code 280 (COMS Attenuator Filters) Procedure 3
Point Source Location
Attenuator
I.D.
Attenuator
Certification Date
Certified Attenuator
Opacity
OPLR,
SECR, or
PLCF,
Corrected Opacity
Value
Range
Low, Mid, & High
Certification
1-year or 5-year
MSCC Opacity R95A 6/21/24 25 OPLR 15.71 Low 1Year
MSCC Opacity R96A 6/21/24 36 OPLR 23.52 Mid 1Year
MSCC Opacity R97A 6/21/24 64 OPLR 45.61 High 1Year
*
Opacity Monitor Response (Average of 5)
Low Range Mid Range High Range
MSCC Opacity 8/14/24 16 0.190 0.000 0.000 0.190
MSCC Opacity 8/14/24 24 0.580 0.000 0.000 0.580
MSCC Opacity 8/14/24 46 0.790 0.000 0.000 0.790
*
Point Source Location Audit Date
Alternitive Zero
Alignment
(Yes or No)
COM Clear
Condition Zero
Response
(CCZR)
COM Simulated
Zero Response
(CSZR)
Zero Alignment
Error Difference
(CCZR)-(CSZR)
Adjustment to COM
Simulated Zero
Response
(CSZR)
(Yes or No)
MSCC Opacity 12/19/23 N 1.300 0.000 1.300
Audit Gas Used High Span Audit Gas UsedPoint Source Channel Audit Date Low Span
Type Code 282 (Procedure 3 - Annual Zero Alignment Audit)
Point
Source Location Audit Date Mean Difference Standard Deviation
Confidence
Coefficient
Calibration
Error (≤ 3%)
Type Code 281 (Procedure 3 - COMS Filter Audit Calibration Error)
Big West EER 3Q2024
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) VOC SO2 CO H2S TRS Grand Total
(blank)0 0
NVRU 0.02 0.02
SVRU 0.05 0.05
SRU 0.03 0.03
MSCC 1.42 3.90 5.32
WFLARE 1.07 1.07
SFLARE 6.73 1.83 8.57
Grand Total 0 0.07 1.45 3.90 7.80 1.83 15.05
*
Type Code 230
(Manual Sample - Alternate Sampling During Monitor Outage) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) H2S Grand Total
(blank)0 0
WFLARE 1 1
SFLARE 10 10
Grand Total 0 11 11
*
Type Code 240
(CEM Modifications) - 100 (All)
*
Count of Channel Column Labels
Row Labels (blank) Grand Total
(blank)
(blank)
Grand Total
Big West EER 3Q2024
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels 721 723 724 Grand Total
SVRU
VOC
Temporary loss of communication between analyzer and DAS 2 2
NVRU
VOC
Temporary loss of communication between analyzer and DAS 4 4
Cylinder Gas Audit 1 1
SRU
SO2
Cylinder Gas Audit 1 1
Analyzer inspection and revalidation.1 1
Weekly PM - WO#120271: Performed PM and replaced two filters, two o-
rings, and a gasket.1 1
Weekly PM - WO#120445: Performed PM, adjusted flows, and replaced
two filters, two o-rings, a gasket, and tubing.1 1
Daily Validation 3 3
Weekly PM - WO#120965: Performed PM, calibrated, and replaced two
filters, two o-rings, and a gasket.1 1
4X Condition - Ops immediately called out Instrumentation.
Instrumentation inspected and then ran a passing validation.25 25
Weekly PM - WO#121648: Performed PM and replaced two filters, two o-
rings, and a gasket.1 1
O2
Cylinder Gas Audit 1 1
Analyzer inspection and revalidation.1 1
Weekly PM - WO#120271: Performed PM and replaced two filters, two o-
rings, and a gasket.1 1
Weekly PM - WO#120445: Performed PM, adjusted flows, and replaced
two filters, two o-rings, a gasket, and tubing.1 1
Daily Validation 3 3
Weekly PM - WO#120965: Performed PM, calibrated, and replaced two
filters, two o-rings, and a gasket.1 1
Weekly PM - WO#121648: Performed PM and replaced two filters, two o-
rings, and a gasket.1 1
AMINE
H2S
Cylinder Gas Audit 1 1
WO#120816 & 120898: The H2S zero span's solenoid was deemed
inoperable on 7/27. Instrumentation was called out but the spare
solenoids were not operating effectively. On 7/30, it was determined to
bypass the solenoid and operate a manual valve. The zero gas validated
manually on the morning of 7/30.
98 98
WO#120898: After manually validating the zero span on the mornings of
7/30 and 7/31, Instrumentation installed an effective solenoid valve on
the afternoon of 7/31.
1 1
WO#121274: The high span solenoid and actuator were not operating
correctly. Instrumentation rebuilt the actuator and ran a passing
validation.
3 3
MSCC
SO2
CGA/quarterly validation 2 2
O2
CGA/quarterly validation 2 2
Opacity
Quarterly COMS audit 1.5 1.5
Big West EER 3Q2024
Sum of Hours Column Labels
Row Labels 721 723 724 Grand Total
CO
CGA/quarterly validation 2 2
NOx
CGA/quarterly validation 2 2
CO2
CGA/quarterly validation 2 2
WFLARE
H2S
Temporary loss of communication between analyzer and DAS 1 1
Cylinder Gas Audit 5 5
WO#120472: Flare analyzer sample pump had shut off. Instrumentation
was called out and the pump was turned back on.2 2
TRS
Temporary loss of communication between analyzer and DAS 1 1
Cylinder Gas Audit 5 5
WO#120472: Flare analyzer sample pump had shut off. Instrumentation
was called out and the pump was turned back on.2 2
SFLARE
H2S
Cylinder Gas Audit 4 4
WO#120655: H2O was carring hydrocarbons into the analyzer tubing,
causing a blockage. Replaced transfer tube and restrictor tube. Baked out
H2O in the analyzer chamber.
4 4
Temporary loss of communication between the analyzer and DAS.5 5
4X Condition - WO#120984: Replaced filters, cleaned the lines in the
sample conditioning box, and changed out the spider filter. Revalidated
the analyzer.
31 31
WO#121297: Changed filters, calibrated, and revalidated.1 1
WO#121538: Blew out sample lines, changed filters and restrictor tube,
calibrated, and validated the analyzer.6 6
WO#121543: Blew out lines, changed filters and restrictor tube,
calibrated, and revalidated.1 1
Instrumentation determined the sample pump needed to be replaced.
Flow was diverted to the West Flare. After completing repairs and
calibrating, flow was routed back to the South Flare.
4 4
Analyzer maintenance and revalidation.2 2
WO#121990: Changed filters and revalidated.2 2
TRS
Cylinder Gas Audit 4 4
WO#120655: H2O was carring hydrocarbons into the analyzer tubing,
causing a blockage. Replaced transfer tube and restrictor tube. Baked out
H2O in the analyzer chamber.
4 4
Temporary loss of communication between the analyzer and DAS.5 5
4X Condition - WO#120984: Replaced filters, cleaned the lines in the
sample conditioning box, and changed out the spider filter. Revalidated
the analyzer.
31 31
WO#121297: Changed filters, calibrated, and revalidated.1 1
WO#121538: Blew out sample lines, changed filters and restrictor tube,
calibrated, and validated the analyzer.6 6
WO#121543: Blew out lines, changed filters and restrictor tube,
calibrated, and revalidated.1 1
Instrumentation determined the sample pump needed to be replaced.
Flow was diverted to the West Flare. After completing repairs and
calibrating, flow was routed back to the South Flare.
4 4
Analyzer maintenance and revalidation.2 2
WO#121990: Changed filters and revalidated.2 2
Grand Total 215 40.5 45 300.5
Big West EER 3Q2024
Opy *
Opy Count of Magnitude of Emissions Column Labels
Opy Row Labels (blank)0 Grand Total
Opy 0 1 1
Opy #N/A 1 1
Opy Grand Total 1 1
SO2 *
SO2 Type Code 410 (SO2) - 6000 (All)
SO2 *
SO2 Count of Magnitude of Emissions Column Labels
SO2 Row Labels (blank)0 Grand Total
SO2 #N/A
SO2 0 1 1
SO2
SO2 (blank)
SO2 Grand Total 1 1
NOx *
NOx Type Code 420 (NOx) - 6000 (All)
NOx *
NOx Count of Magnitude of Emissions Column Labels
NOx Row Labels (blank)0 Grand Total
NOx 0
NOx #N/A 1 1
NOx Grand Total 1 1
H2S/TRS *
H2S/TRS Type Code 430
(H2S) - 6000 (All)
H2S/TRS *
H2S/TRS Count of Magnitude of Emissions Column Labels
H2S/TRS Row Labels 701 Grand Total
H2S/TRS WFLARE
H2S/TRS Plant-wide shutdown and startup due to power failure caused by
the Rocky Mountain Power substation fire.3 3
H2S/TRS SFLARE
H2S/TRS Plant-wide shutdown and startup due to power failure caused by
the Rocky Mountain Power substation fire.19 19
H2S/TRS Incident#962: High H2S correlating with Department 2 start-up and
change in flow rate.3 3
H2S/TRS Grand Total 25 25
CO *
CO Type Code 440
(CO) - 6000 (All)
CO *
CO Count of Magnitude of Emissions Column Labels
CO Row Labels 701 Grand Total
CO MSCC
CO MSCC shutdown and startup due to a plant-wide power failure
caused by the Rocky Mountain Power substation fire.
18 18
CO Grand Total 18 18
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 (blank)0 Grand Total
VOC/THC 0
VOC/THC #N/A 1 1
VOC/THC Grand Total 1 1
Big West EER 3Q2024
Big West EER 3Q2024
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