DAQ-2025-002468

1
DAQC-433-25
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: May 7, 2025

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: May 7, 2025

SOURCE LOCATION: North Salt Lake/Davis County

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

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:

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
AMINE 2160 H2S 100% 02/13/25 11/19/24 AMINE H2S 0.00 162 PPM -
3HR
MSCC 2160 CO2 99% 04/11/24 AMINE H2S 0.00 60 PPM -
365D
MSCC 2160 CO 99% 02/25/25 04/11/24 MSCC CO 0.00 100 PPM -
365D
MSCC 2160 NOx 99% 02/25/25 04/11/24 MSCC CO 0.00 500 PPM -
001H

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
MSCC 2160 O2 100% 02/25/25 04/11/24 MSCC CO 0.00
500 PPM -
001H
Corrected to
0% O2
MSCC 2160 Opacity 99% MSCC NOx 0.00
60 PPM -
007D
Corrected to
0% O2
MSCC 2160 SO2 99% 02/25/25 04/11/24 MSCC NOx 0.00 40 PPM -
365D
NVRU 2152 VOC 100% 02/10/25 10/16/24 MSCC Opacity 0.00
20
PERCENT -
006M
SFLARE 2160 H2S 100% 03/04/25 11/20/24 MSCC SO2 0.00 25 PPM -
365D
SFLARE 2160 TRS 100% 03/04/25 MSCC SO2 0.00 50 PPM -
007D
SRU 2160 O2 99% 02/13/25 10/22/24 MSCC SO2 0.00
50 PPM -
007D
Corrected to
0% O2
SRU 2160 SO2 99% 02/13/25 10/22/24 NVRU VOC 0.00
1.1
PERCENT -
006H
SVRU 29 VOC 100% 02/10/25 10/16/24 SFLARE H2S 0.00 162 PPM -
3HR
WFLARE 2125 H2S 99% 03/03/25 11/20/24 SVRU VOC 0.00
1.1
PERCENT -
006H
WFLARE 2125 TRS 99% 03/03/25 WFLARE H2S 5.00 162 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 0 0 0 0 0 500 PPM - 001H
MSCC CO 0 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 0 0 0 0 0 162 PPM - 3HR
SVRU VOC 0 0 0 0 0 1.1 PERCENT - 006H
WFLARE H2S 0 0 0 5 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 0 0 0 0 0
MSCC CO2 19 0 2 0 0
MSCC CO 19 0 2 0 0
MSCC NOx 19 0 2 0 0
MSCC O2 1 0 2 0 0
MSCC Opacity 0 0 16 0 0
MSCC SO2 20 0 2 0 0
NVRU VOC 1 0 0 0 0
SFLARE H2S 0 0 7 3 0
SFLARE TRS 0 0 7 3 0
SRU O2 0 14 5 8 0
SRU SO2 0 14 5 8 0
SVRU VOC 0 0 0 0 0
WFLARE H2S 2 0 3 12 0
WFLARE TRS 2 0 3 12 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 2/13/25 16 0.190 0.228
MSCC Opacity 2/13/25 24 0.660 0.712
MSCC Opacity 2/13/25 46 0.658 0.680

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 10/29/24 N 0.50 0 1

Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
5 Hours 213 Hours 0 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 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
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 1 2025 2160
1 110 1 2025 2160
1 110 1 2025 2152
1 110 1 2025 2160
1 110 1 2025 2160
1 110 1 2025 29
1 110 1 2025 2125
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 0 0.00% 0 0 0 0 0 500 PPM 001H
1 TRUE 310 CO 0 0.00% 0 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 0 0.00% 0 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 5 0.24% 0 0 0 5 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 1Q2025
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 2160 0.00% 0 0 0 0 0 0
1 TRUE 300 CO2 2160 0.97% 21 19 0 2 0 0
1 TRUE 300 CO 2160 0.97% 21 19 0 2 0 0
1 TRUE 300 NOx 2160 0.97% 21 19 0 2 0 0
1 TRUE 300 O2 2160 0.14% 3 1 0 2 0 0
1 TRUE 300 Opacity 2160 0.72% 15.6 0 0 15.6 0 0
1 TRUE 300 SO2 2160 1.02% 22 20 0 2 0 0
1 TRUE 300 VOC 2152 0.05% 1 1 0 0 0 0
1 TRUE 300 H2S 2160 0.46% 10 0 0 7 3 0
1 TRUE 300 TRS 2160 0.46% 10 0 0 7 3 0
1 TRUE 300 O2 2160 1.25% 27 0 14 5 8 0
1 TRUE 300 SO2 2160 1.25% 27 0 14 5 8 0
1 TRUE 300 VOC 29 0.00% 0 0 0 0 0 0
1 TRUE 300 H2S 2125 0.80% 17 2 0 3 12 0
1 TRUE 300 TRS 2125 0.80% 17 2 0 3 12 0
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
1 215 Days 250 VOC 10/16/24 03/15/24 7 PPM 826.67 915.56 1.00% Pass
1 215 Days 250 VOC 10/16/24 03/15/24 7 PPM 483.44 676.11 3.00% 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 1.00% Pass
1 28 Days 250 SO2 04/11/24 03/14/24 1 PPM 25.15 26.95 9.00% Pass
1 28 Days 250 NOx 04/11/24 03/14/24 1 PPM 28.45 32.44 16.00% Pass
1 28 Days 250 CO 04/11/24 03/14/24 1 PPM 31.95 28.08 1.00% Pass
1 316 Days 250 SO2 10/22/24 12/11/23 10 PPM 2942 3000.73 3.20% Pass
1 316 Days 250 O2 10/22/24 12/11/23 10 PCT 8.51 8.42 0.10% Pass
1 341 Days 250 H2S 11/19/24 12/14/23 11 PPM 4.5 3.89 1.00% Pass
1 344 Days 250 H2S 11/20/24 12/12/23 11 PPM 12.17 12.01 2.00% Pass
1 343 Days 250 H2S 11/20/24 12/13/23 11 PPM 9.41 8.61 1.00% Pass
1 0 Days 250 0 01/00/00 01/00/00 0 0 0 0 0.00% 0
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
Point Source
Point Source
Big West EER 1Q2025
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 02/13/25 1 CC330092 09/28/25 EPA PPM 81.7 75.27 8.60% PASS Low
1 Valid Cal. Gas 260 H2S 02/13/25 2 CC222339 10/27/26 EPA PPM 169 163.9 3.10% PASS High
1 Valid Cal. Gas 260 CO 02/25/25 1 SG9103271BAL 04/06/28 EPA PCT 6.6 6.42 3.00% PASS Low
1 Valid Cal. Gas 260 CO 02/25/25 2 CC316670 11/12/32 EPA PCT 12.2 11.98 2.20% PASS High
1 Valid Cal. Gas 260 CO 02/25/25 1 SG9103271BAL 04/06/28 EPA PPM 252.5 245.9 2.70% PASS Low
1 Valid Cal. Gas 260 CO 02/25/25 2 CC316670 11/12/32 EPA PPM 551.1 547 0.80% PASS High
1 Valid Cal. Gas 260 NOx 02/25/25 1 CC288910 05/11/26 EPA PPM 49.4 50.35 1.90% PASS Low
1 Valid Cal. Gas 260 NOx 02/25/25 2 CC741841 07/15/32 EPA PPM 114.8 115.4 0.50% PASS High
1 Valid Cal. Gas 260 O2 02/25/25 1 SG9103271BAL 04/06/28 EPA PCT 5.4 5.011 7.00% PASS Low
1 Valid Cal. Gas 260 O2 02/25/25 2 CC316670 11/12/32 EPA PCT 9.6 8.954 7.10% PASS High
1 Valid Cal. Gas 260 SO2 02/25/25 1 CC61022 11/18/28 EPA PPM 34.5 35.49 2.80% PASS Low
1 Valid Cal. Gas 260 SO2 02/25/25 2 SG9165194 11/01/32 EPA PPM 84.9 86.54 1.90% PASS High
1 Valid Cal. Gas 260 VOC 02/10/25 1 CC476442 06/06/30 EPA PCT 0.5 0.502 1.90% PASS Low
1 Valid Cal. Gas 260 VOC 02/10/25 2 EB0063698 01/09/31 EPA PCT 1.1 1.096 1.00% PASS High
1 Valid Cal. Gas 260 H2S 03/04/25 1 ALM040307 10/28/25 NIST PPM 73.3 74.23 1.20% PASS Low
1 Valid Cal. Gas 260 H2S 3/4/25 2 ALM058283 12/23/27 NIST PPM 177 171 0 PASS High
1 Valid Cal. Gas 260 TRS 3/4/25 1 ALM039521 12/17/25 NIST PPM 1,175 1,207 0 PASS Low
1 Valid Cal. Gas 260 TRS 3/4/25 2 CC423478 10/30/25 NIST PPM 2,673 2,718 0 PASS High
1 Valid Cal. Gas 260 O2 2/13/25 1 ALM042603 4/27/26 EPA PCT 5 5 0 PASS Low
1 Valid Cal. Gas 260 O2 2/13/25 2 EB0140925 7/31/31 EPA PCT 11 11 0 PASS High
1 Valid Cal. Gas 260 SO2 2/13/25 1 ALM013519 4/27/28 EPA PCT 1 1 0 PASS Low
1 Valid Cal. Gas 260 SO2 2/13/25 2 CC347658 11/1/31 EPA PCT 2 2 0 PASS High
1 Valid Cal. Gas 260 VOC 2/10/25 1 CC476442 6/6/30 EPA PCT 1 1 0 PASS Low
1 Valid Cal. Gas 260 VOC 2/10/25 2 CC505291 9/22/30 EPA PCT 1 1 0 PASS High
1 Valid Cal. Gas 260 H2S 3/3/25 1 ALM040307 10/28/25 NIST PPM 73 74 0 PASS Low
1 Valid Cal. Gas 260 H2S 3/3/25 2 CC475928 6/10/27 NIST PPM 168 169 0 PASS High
1 Valid Cal. Gas 260 TRS 3/3/25 1 ALM039521 12/17/25 NIST PPM 1,220 1,207 0 PASS Low
1 Valid Cal. Gas 260 TRS 3/3/25 2 CC212087 10/30/25 NIST PPM 2,773 2,730 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 0
1
Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code Channel Start Date Start Time End Date End Time Hours
1 5 210 H2S 3/26/25 15:37 3/26/25 15:46 0.15
1 5 210 TRS 1/20/25 20:55 1/20/25 21:47 0.87
1 9 210 TRS 3/4/25 8:05 3/4/25 8:06 0.02
1 TRUE 210 H2S 2/14/25 8:24 2/14/25 8:35 0.18
1 210 CO 1/5/25 10:35 1/5/25 10:36 0.02
1 210 CO 1/14/25 10:55 1/14/25 10:56 0.02
1 210 CO 1/21/25 10:20 1/21/25 10:21 0.02
1 210 CO 2/16/25 20:24 2/16/25 20:27 0.05
1 210 SO2 2/5/25 11:31 2/5/25 11:34 0.05
1 210 SO2 1/17/25 5:36 1/17/25 5:37 0.02
1 210 SO2 1/17/25 5:39 1/17/25 5:48 0.15
1 210 H2S 1/17/25 5:59 1/17/25 6:19 0.33
1 210 H2S 1/20/25 18:18 1/20/25 18:41 0.38
1 210 0 1/0/00 0:00 1/0/00 0:00
1
1 Yes
1 4.53 TC 220 Hours 212.60 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 212.60 TC 300 Hours 0.00 TRUE
0
SRU
AMINE
AMINE
MSCC
MSCC
WFLARE
WFLARE
WFLARE
MSCC
SRU
MSCC
0
WFLARE
WFLARE
WFLARE
WFLARE
0
MSCC
MSCC
SVRU
SVRU
NVRU
MSCC
MSCC
MSCC
MSCC
MSCC
SRU
SRU
SRU
SFLARE
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)
AMINE
AMINE
SFLARE
MSCC
Point Source
Point Source
Point Source
Yes
MSCC
MSCC
MSCC
NVRU
SFLARE
SFLARE
SFLARE
SRU
None Reported None Reported None Reported None Reported None Reported None Reported
Big West 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
NVRU VOC 10/16/24 03/15/24 7 PPM 826.67 915.56 1.00% Pass
SVRU VOC 10/16/24 03/15/24 7 PPM 483.44 676.11 3.00% 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 1.00% Pass
MSCC SO2 04/11/24 03/14/24 1 PPM 25.15 26.95 9.00% Pass
MSCC NOx 04/11/24 03/14/24 1 PPM 28.45 32.44 16.00% Pass
MSCC CO 04/11/24 03/14/24 1 PPM 31.95 28.08 1.00% Pass
SRU SO2 10/22/24 12/11/23 10 PPM 2942 3000.73 3.20% Pass
SRU O2 10/22/24 12/11/23 10 PCT 8.51 8.42 0.10% Pass
AMINE H2S 11/19/24 12/14/23 11 PPM 4.5 3.89 1.00% Pass
SFLARE H2S 11/20/24 12/12/23 11 PPM 12.17 12.01 2.00% Pass
WFLARE H2S 11/20/24 12/13/23 11 PPM 9.41 8.61 1.00% Pass
*
NSPS CGA First 2025
Audit Gas Ranges Audit Gas Ranges
AP1 Low AP2 Low AP1 High AP2 High
AMINE H2S 2/13/25 300 75.27 60 to 90
AMINE H2S 2/13/25 300 163.9 150 to 180
MSCC CO 2/25/25 50 6.42 10 to 15
MSCC CO 2/25/25 50 11.98 25 to 30
MSCC CO 2/25/25 1000 245.9 200 to 300
MSCC CO 2/25/25 1000 547 500 to 600
MSCC NOx 2/25/25 200 50.35 40 to 60
MSCC NOx 2/25/25 200 115.4 100 to 120
MSCC O2 2/25/25 10 5.011 4 to 6
MSCC O2 2/25/25 10 8.954 8 to 12
MSCC SO2 2/25/25 150 35.49 30 to 45
MSCC SO2 2/25/25 150 86.54 75 to 90
NVRU VOC 2/10/25 2 0.502 0.4 to 0.6
NVRU VOC 2/10/25 2 1.096 1 to 1.2
SFLARE H2S 3/4/25 300 74.23 60 to 90
SFLARE H2S 3/4/25 300 171.1 150 to 180
SFLARE TRS 3/4/25 5000 1206.6 1000 to 1500
SFLARE TRS 3/4/25 5000 2718.2 2500 to 3000
SRU O2 2/13/25 20 5.204 4 to 6
SRU O2 2/13/25 20 11.06 8 to 12
SRU SO2 2/13/25 3.5 0.9077 0.7 to 1.05
SRU SO2 2/13/25 3.5 1.796 1.75 to 2.1
SVRU VOC 2/10/25 2 0.502 0.4 to 0.6
SVRU VOC 2/10/25 2 1.099 1 to 1.2
WFLARE H2S 3/3/25 300 74.23 60 to 90
WFLARE H2S 3/3/25 300 169.3 150 to 180
WFLARE TRS 3/3/25 5000 1206.6 1000 to 1500
WFLARE TRS 3/3/25 5000 2729.6 2500 to 3000
*
Audit Gas Used High Span Audit Gas UsedPoint Source Channel Audit Date Low Span
Big West EER 1Q2025
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 2/13/25 16 0.190 0.031 0.038 0.228
MSCC Opacity 2/13/25 24 0.660 0.042 0.052 0.712
MSCC Opacity 2/13/25 46 0.658 0.018 0.022 0.680
*
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 10/29/24 N 0.500 0.000 0.700
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 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) H2S TRS CO SO2 Grand Total
(blank)0 0
WFLARE 2.43 0.88 3.32
SFLARE 0.18 0.18
MSCC 0.10 0.05 0.15
SRU 0.17 0.17
AMINE 0.72 0.72Grand Total 0 3.33 0.88 0.10 0.22 4.53
*
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
Big West EER 1Q2025
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels 724 723 721 722 Grand Total
WFLARE
H2S
Analyzer maintenance 5.0 5.0
Maintenance and revalidation.7.0 7.0
Cylinder Gas Audit 3.0 3.0
Temporary loss of communication between analyzer and DAS 2.0 2.0
TRS
Analyzer maintenance 5.0 5.0
Maintenance and revalidation.7.0 7.0
Cylinder Gas Audit 3.0 3.0
Temporary loss of communication between analyzer and DAS 2.0 2.0
SFLARE
H2S
Analyzer maintenance 3.0 3.0
Cylinder Gas Audit 7.0 7.0
TRS
Analyzer maintenance 3.0 3.0
Cylinder Gas Audit 7.0 7.0
MSCC
CO
Cylinder Gas Audit 2.0 2.0
Temporary loss of communication between analyzer and DAS 1.0 1.0
4X Condition - WO#125377 - Calibrated and revalidated.18.0 18.0
SO2
Cylinder Gas Audit 2.0 2.0
Temporary loss of communication between analyzer and DAS 1.0 1.0
4X Condition - WO#125377 - Calibrated and revalidated.19.0 19.0
NOx
Cylinder Gas Audit 2.0 2.0
Temporary loss of communication between analyzer and DAS 1.0 1.0
4X Condition - WO#125377 - Calibrated and revalidated.18.0 18.0
CO2
Cylinder Gas Audit 2.0 2.0
Temporary loss of communication between analyzer and DAS 1.0 1.0
4X Condition - WO#125377 - Calibrated and revalidated.18.0 18.0
O2
Cylinder Gas Audit 2.0 2.0
Temporary loss of communication between analyzer and DAS 1.0 1.0
Opacity
Daily Validation 14.0 14.0
Quarterly COMS audit 1.6 1.6
SRU
SO2
Analyzer maintenance 1.0 1.0
Cylinder Gas Audit 1.0 1.0
Daily Validation 4.0 4.0
4X Condition - WO#124324: Replaced filters, replaced tubing and
fittings, cleaned out the filter housing. Conducted a passing validation.
14.0 14.0
Weekly PM - Preventative maintenance and revalidation.7.0 7.0
O2
Analyzer maintenance 1.0 1.0
Cylinder Gas Audit 1.0 1.0
Daily Validation 4.0 4.0
4X Condition - WO#124324: Replaced filters, replaced tubing and
fittings, cleaned out the filter housing. Conducted a passing validation.
14.0 14.0
Weekly PM - Preventative maintenance and revalidation.7.0 7.0
NVRU
VOC
Temporary loss of communication between analyzer and DAS 1.0 1.0
Grand Total 46.0 55.6 83.0 28.0 212.6
Big West 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
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 704 Grand Total
H2S/TRS WFLARE
H2S/TRS Amine controller module 5595a failed, causing the 5595b valve to
vent to the West Flare.5 5
H2S/TRS Grand Total 5 5
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
Big West 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