DAQ-2024-011475

1

DAQC-1109-24
Site ID 10355 (B5)

MEMORANDUM

TO: FILE – PACIFICORP – Gadsby Power Plant

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: October 30, 2024

SUBJECT: Gadsby Power Plant (Gadsby), Major, SIP, Salt Lake County,
FRS # UT00000049003500068

INSPECTION TYPE: State Electronic Data Report (SEDR) Review

REVIEW DATE: October 30, 2024

SOURCE LOCATION: Salt Lake City/Salt Lake County

SOURCE CONTACT: Bill Kennick – 801-220-7702
Leah Tiberius – 801-220-7708

APPLICABLE
REGULATIONS: Title V Operating Permit
Permit Number: 3500068006
Date of Permit: January 30, 2024
Date of Last Revision: January 30, 2024

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 the relative
accuracy performance specification test review memorandum.

1 8 2
2

SYSTEM 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
1 916 NOx 98% 07/17/24 08/26/24 1 NOx 0.00
179 lb/hr - 3
hour rolling
avg.
1 916 CO2 98% 07/17/24 1 NOx 0.00
336 ppmdv,
3% O2 dry - 3
hour rolling
avg.
2 1262 NOx 100% 07/18/24 08/26/24 2 NOx 0.00
204 lb/hr - 3
hour rolling
avg.
2 1262 CO2 100% 07/18/24 2 NOx 0.00
336 ppmdv,
3% O2 dry - 3
hour rolling
avg.
3 1338 NOx 100% 07/15/24 08/27/24 3 NOx 0.00
142 lb/hr, Nov.
1-Feb. 28(29) -
3 hour rolling
avg.
3 1338 CO2 100% 07/15/24 3 NOx 0.00
203 lb/hr, Mar.
1-Oct. 31 - 3
hour rolling
avg.
4 43 NOx 99% 07/23/24 08/28/24 3 NOx 0.00
168 ppmdv,
3% O2 dry - 3
hour rolling
avg.
4 43 CO 99% 07/23/24 08/28/24 4 NOx 0.00
5 ppmdv, 15%
O2 dry - 30
day rolling
average
4 43 O2 99% 07/23/24 08/28/24 5 NOx 0.00
5 ppmdv, 15%
O2 dry - 30
day rolling
average
5 43 NOx 99% 07/24/24 08/28/24 6 NOx 0.00
5 ppmdv, 15%
O2 dry - 30
day rolling
average
5 43 CO 99% 07/24/24 08/28/24 4 CO 0.00
10 ppmdv,
15% O2 dry -
8-hour block
average
5 43 O2 99% 07/24/24 08/28/24 5 CO 0.00
10 ppmdv,
15% O2 dry -
8-hour block
average
3

6 40 NOx 99% 07/25/24 08/29/24 6 CO 0.00
10 ppmdv,
15% O2 dry -
8-hour block
average
6 40 CO 97% 07/25/24 08/29/24 4 NOx 0.00
22.2
lb/hour,15%
O2 dry - 30
day rolling
average
6 40 O2 99% 07/25/24 08/29/24 5 NOx 0.00
600
lb/day,15% O2
dry - 24-hour
block average
6 CO 0.00
26.9
lb/hour,15%
O2 dry - 8-
hour block
average
4 NOx 0.00
116 ppmdv,
15% O2 dry - 4
hour rolling
average
5 NOx 0.00
116 ppmdv,
15% O2 dry - 4
hour rolling
average
6 NOx 0.00
116 ppmdv,
15% O2 dry - 4
hour rolling
average

Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
1 NOx 0 0 0 0 0 179 lb/hr - 3 hour rolling avg.
1 NOx 0 0 0 0 0 336 ppmdv, 3% O2 dry - 3 hour
rolling avg.
2 NOx 0 0 0 0 0 204 lb/hr - 3 hour rolling avg.
2 NOx 0 0 0 0 0 336 ppmdv, 3% O2 dry - 3 hour
rolling avg.
3 NOx 0 0 0 0 0 142 lb/hr, Nov. 1-Feb. 28(29) - 3
hour rolling avg.
3 NOx 0 0 0 0 0 203 lb/hr, Mar. 1-Oct. 31 - 3
hour rolling avg.
3 NOx 0 0 0 0 0 168 ppmdv, 3% O2 dry - 3 hour
rolling avg.
4 NOx 0 0 0 0 0 5 ppmdv, 15% O2 dry - 30 day
rolling average
5 NOx 0 0 0 0 0 5 ppmdv, 15% O2 dry - 30 day
rolling average
6 NOx 0 0 0 0 0 5 ppmdv, 15% O2 dry - 30 day
rolling average
4

Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
4 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 8-hour
block average
5 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 8-hour
block average
6 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 8-hour
block average
4 NOx 0 0 0 0 0 22.2 lb/hour,15% O2 dry - 30
day rolling average
5 NOx 0 0 0 0 0 600 lb/day,15% O2 dry - 24-
hour block average
6 CO 0 0 0 0 0 26.9 lb/hour,15% O2 dry - 8-
hour block average
4 NOx 0 0 0 0 0 116 ppmdv, 15% O2 dry - 4 hour
rolling average
5 NOx 0 0 0 0 0 116 ppmdv, 15% O2 dry - 4 hour
rolling average
6 NOx 0 0 0 0 0 116 ppmdv, 15% O2 dry - 4 hour
rolling average

CMS Performance Summary - Hourly Summary
Point
Source Channel Monitor
Malfunction
Non-monitor
Malfunction
QA
Calibrations
Other
Known
Causes
Unknown
Causes
1 NOx 0 0 15 0 0
1 CO2 0 0 14 0 0
2 NOx 0 0 0 0 0
2 CO2 0 0 0 0 0
3 NOx 0 0 0 0 0
3 CO2 0 0 0 0 0
4 NOx 0 0 1 0 0
4 CO 0 0 1 0 0
4 O2 0 0 1 0 0
5 NOx 0 0 0 0 0
5 CO 0 0 0 0 0
5 O2 0 0 0 0 0
6 NOx 0 0 0 0 0
6 CO 0 0 1 0 0
6 O2 0 0 0 0 0

5

Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
0 Hours 34 Hours 0 Hours 0 Events

SOURCE INSPECTION
SUMMARY EVALUATION: Gadsby 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. Gadsby was in
compliance during this reporting period. No enforcement actions are
recommended at this time.

The NSPS monitoring system meets the performance standards of 40 CFR
60, Appendix B Performance Specifications. Gadsby’s acid rain
monitoring system meets the performance standards of 40 CFR 75 Acid
Rain Performance Specifications.

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
Pacificorp Gadsby 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 Bill Kennick 03500068 801-227708 Leah Tiberius Dickson
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 916.69
1 110 3 2024 1262.63
1 110 3 2024 1338.45
1 110 3 2024 43.8
1 110 3 2024 43.13
1 110 3 2024 40.02
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 CO2 Thermo 410iQHL-ABN 12305124129 0 20 8/14/2023 Shelter
1 200 NOx Thermo 42iQLS-ACBNN 12309525996 0 200 8/14/2023 Shelter
1 200 CO2 Thermo 410iQHL-ABN 12305124128 0 20 8/14/2023 Shelter
1 200 NOx Thermo 42iQLS-ACBNN 12309525997 0 200 8/14/2023 Shelter
1 200 CO2 Thermo 410iQHL-ABN 12305124127 0 20 8/14/2023 Shelter
1 200 NOx Thermo 42iQLS-ACBNN 12309525998 50 200 8/14/2023 Shelter
1 200 CO Thermo 48iQ-ABC 12305124124 20 200 8/15/2023 Shelter
1 200 NOx Thermo 42iQLS-ACBNN 12318428624 10 200 8/15/2023 Shelter
1 200 O2 Thermo 48iQ-ABC 12305124124 0 25 8/15/2023 Shelter
1 200 CO Thermo 48iQ-ABC 12305124125 20 200 8/17/2023 Shelter
1 200 NOx Thermo 42iQLS 12305124117 10 200 8/17/2023 Shelter
1 200 O2 Thermo 48iQ-ABC 12305124125 0 25 8/17/2023 Shelter
1 200 CO Thermo 48iQ-ABC 12305124126 20 200 8/16/2023 Shelter
1 200 NOx Thermo 42iQLS-ACBNN 12309525999 10 200 8/16/2023 Shelter
1 200 O2 Thermo 48iQ-ABC 12305124126 0 25 8/16/2023 Shelter
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 NOx 0 0.00% 0 0 0 0 0 179 lb/hr 3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 336 ppmdv, 3% O2 dry3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 204 lb/hr 3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 336 ppmdv, 3% O2 dry3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 142 lb/hr, Nov. 1-Feb. 28(29)3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 203 lb/hr, Mar. 1-Oct. 31 3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 168 ppmdv, 3% O2 dry3 hour rolling avg.
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 5 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 5 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 5 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry8 hour block average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry8 hour block average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry8 hour block average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 22.2 lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 600 lb/day,15% O2 dry24 hour block average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 26.9 lb/hour,15% O2 dry8 hour block average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 116 ppmdv, 15% O2 dry4 hour rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 116 ppmdv, 15% O2 dry4 hour rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 116 ppmdv, 15% O2 dry4 hour rolling average
1 310 0 0 0 0 0 0 0 0 0
Point Source
1
2
3
4
5
6
0
2
2
3
4
5
5
6
6
6
0
PacifiCorp Gadsby Plant
0
1
1
2
2
3
3
4
4
4
5
5
3
3
4
5
6
1
1
6
4
5
6
4
5
6
0
Pacificorp Gadsby 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 NOx 916.69 1.66% 15.25 0.23 0 14.87 0.15 0
1 TRUE 300 CO2 916.69 1.59% 14.53 0.23 0 14.15 0.15 0
1 TRUE 300 NOx 1262.63 0.01% 0.067 0 0 0.067 0 0
1 TRUE 300 CO2 1262.63 0.01% 0.067 0 0 0.067 0 0
1 TRUE 300 NOx 1338.45 0.00% 0.03 0 0 0 0.03 0
1 TRUE 300 CO2 1338.45 0.00% 0.03 0 0 0 0.03 0
1 TRUE 300 NOx 43.8 1.21% 0.53 0 0 0.53 0 0
1 TRUE 300 CO 43.8 1.21% 0.53 0 0 0.53 0 0
1 TRUE 300 O2 43.8 1.21% 0.53 0 0 0.53 0 0
1 TRUE 300 NOx 43.13 1.00% 0.43 0 0 0.43 0 0
1 TRUE 300 CO 43.13 1.00% 0.43 0 0 0.43 0 0
1 TRUE 300 O2 43.13 1.00% 0.43 0 0 0.43 0 0
1 TRUE 300 NOx 40.02 1.07% 0.43 0 0 0.43 0 0
1 TRUE 300 CO 40.02 2.75% 1.1 0 0 1.1 0 0
1 TRUE 300 O2 40.02 1.07% 0.43 0 0 0.43 0 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
1 350 Days 250 NOx 08/26/24 09/11/23 11.5 #/MMBtu, CO2dil. 0.146 0.14 [d] = 0.006 pass
1 350 Days 250 NOx 08/26/24 09/11/23 11.5 ppmvd @ 3 O2 120.633 116.344 5.11% pass
1 346 Days 250 NOx 08/26/24 09/15/23 11.4 #/MMBtu, CO2dil. 0.144 0.148 [d] = 0.004 pass
1 346 Days 250 NOx 08/26/24 09/15/23 11.4 ppmvd @ 3 O2 119.333 115.967 4.56% pass
1 349 Days 250 NOx 08/27/24 09/13/23 11.5 #/MMBtu, CO2dil. 0.099 0.105 [d] = 0.006 pass
1 349 Days 250 NOx 08/27/24 09/13/23 11.5 ppmvd @ 3 O2 81.411 85.356 5.17% pass
1 349 Days 250 NOx 08/28/24 09/14/23 11.5 ppmvd @15O2 2.744 2.522 13.30% pass
1 349 Days 250 NOx 08/28/24 09/14/23 11.5 #/MMBtu, O2dil. 0.01 0.009 [d] = 0.001 pass
1 349 Days 250 O2 08/28/24 09/14/23 11.5 vd 16.078 16.256 1.49% pass
1 349 Days 250 CO 08/28/24 09/14/23 11.5 ppmvd @15O2 1.978 1.1 [d] + CC = 0.93Apass
1 348 Days 250 NOx 08/28/24 09/15/23 11.4 ppmvd @15O2 3.178 3.433 9.40% pass
1 348 Days 250 NOx 08/28/24 09/15/23 11.4 #/MMBtu, O2dil. 0.012 0.013 [d] = 0.001 pass
1 348 Days 250 O2 08/28/24 09/15/23 11.4 vd 16.222 16.211 0.35% pass
1 348 Days 250 CO 08/28/24 09/15/23 11.4 ppmvd @15O2 2.078 1.767 [d] + CC = 0.36Apass
1 350 Days 250 NOx 08/29/24 09/14/23 11.5 ppmvd @15O2 2.456 2.367 6.77% pass
1 350 Days 250 NOx 08/29/24 09/14/23 11.5 #/MMBtu, O2dil. 0.009 0.009 [d] = 0.000 pass
1 350 Days 250 O2 08/29/24 09/14/23 11.5 vd 16.278 16.411 1.39% pass
1 350 Days 250 CO 08/29/24 09/14/23 11.5 ppmvd @15O2 1.522 1.333 [d] + CC = 0.29Apass
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 CO 07/23/24 low DT0008297 08/06/27 P1 ppm 50.1 49.2 180.00% Pass High
1 Valid Cal. Gas 260 CO 07/23/24 mid CC169869 10/09/27 P1 ppm 111.9 111 80.00% Pass High
1 Valid Cal. Gas 260 CO 07/23/24 low DT0016399 08/16/25 P1 ppm 5.1 5 200.00% Pass Low
1 Valid Cal. Gas 260 CO 07/23/24 mid CC117990 09/11/25 P1 ppm 11 11.1 90.00% Pass Low
1 Valid Cal. Gas 260 CO 07/24/24 low CC3243 09/24/27 P1 ppm 50.8 49.5 260.00% Pass High
1 Valid Cal. Gas 260 CO 07/24/24 mid DT0038127 12/01/30 P1 ppm 110.133 110.4 20.00% Pass High
1 Valid Cal. Gas 260 CO 07/24/24 low SGAL1089 06/04/29 P1 ppm 5.367 5.2 320.00% Pass Low
1 Valid Cal. Gas 260 CO 07/24/24 mid CC144297 08/16/25 P1 ppm 11.367 11 330.00% Pass Low
1 Valid Cal. Gas 260 CO 07/25/24 low CC11331 09/24/27 P1 ppm 50.8 49.2 330.00% Pass High
1 Valid Cal. Gas 260 CO 07/25/24 mid DT0029072 12/01/30 P1 ppm 109.733 110.1 30.00% Pass High
1 Valid Cal. Gas 260 CO 07/25/24 low CC104785 05/29/28 P1 ppm 5 5 0.00% Pass Low
1 Valid Cal. Gas 260 CO 07/25/24 mid CC16142 09/11/25 P1 ppm 11.033 11.1 60.00% Pass Low
1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
Point Source
Point Source
Point Source
6
6
6
0
6
4
4
4
4
5
4
4
6
2
3
3
4
4
1
1
2
6
4
5
5
5
6
6
0
1
2
2
3
3
1
6
0
5
5
5
6
4
4
5
5
5
5
6
Pacificorp Gadsby EER 3Q2024
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 CO2 07/17/24 low DT0045488 06/22/30 P1 % 5 5 0.00% Pass 0
1 Valid Cal. Gas 270 CO2 07/17/24 mid CC219859 10/30/31 P1 % 10.8 10.9 90.00% Pass 0
1 Valid Cal. Gas 270 CO2 07/17/24 high EB0147361 10/07/30 P1 % 17.4 18 330.00% Pass 0
1 Valid Cal. Gas 270 NOx 07/17/24 low DT0045488 06/22/30 P1 ppm 50.9 50.1 160% Pass high
1 Valid Cal. Gas 270 NOx 07/17/24 mid CC219859 10/30/31 P1 ppm 109.567 108.9 60% Pass high
1 Valid Cal. Gas 270 NOx 07/17/24 high EB0147361 10/07/30 P1 ppm 175.5 180 250% Pass high
1 Valid Cal. Gas 270 CO2 07/18/24 low DT0045488 06/22/30 P1 % 5.033 5 70.00% Pass 0
1 Valid Cal. Gas 270 CO2 07/18/24 mid CC219859 10/30/31 P1 % 10.833 10.9 60.00% Pass 0
1 Valid Cal. Gas 270 CO2 07/18/24 high EB0147361 10/07/30 P1 % 18 18 0.00% Pass 0
1 Valid Cal. Gas 270 NOx 07/18/24 low DT0045488 06/22/30 P1 ppm 50.333 50.1 50.00% Pass high
1 Valid Cal. Gas 270 NOx 07/18/24 mid CC219859 10/30/31 P1 ppm 109 108.9 10.00% Pass high
1 Valid Cal. Gas 270 NOx 07/18/24 high EB0147361 10/07/30 P1 ppm 175.1 180 270.00% Pass high
1 Valid Cal. Gas 270 CO2 07/15/24 low DT0045527 06/22/30 P1 % 5 5 0.00% Pass 0
1 Valid Cal. Gas 270 CO2 07/15/24 mid CC433632 10/30/31 P1 % 10.9 10.9 0.00% Pass 0
1 Valid Cal. Gas 270 CO2 07/15/24 high CC328287 11/22/30 P1 % 17.4 18.2 440.00% Pass 0
1 Valid Cal. Gas 270 NOx 07/15/24 low DT008500 02/11/25 P1 ppm 11.941 12.22 -230% Pass Low
1 Valid Cal. Gas 270 NOx 07/15/24 mid DT0047681 10/24/26 P1 ppm 27.203 27.2 0% Pass Low
1 Valid Cal. Gas 270 NOx 07/15/24 high DT0013934 04/14/25 P1 ppm 46.321 45.8 110% Pass Low
1 Valid Cal. Gas 270 NOx 07/15/24 low DT0045527 06/22/30 P1 ppm 50.167 50 30.00% Pass High
1 Valid Cal. Gas 270 NOx 07/15/24 mid CC433632 10/30/31 P1 ppm 109.433 109.3 10.00% Pass High
1 Valid Cal. Gas 270 NOx 07/15/24 high CC328287 11/22/30 P1 ppm 175.933 180.7 260.00% Pass High
1 Valid Cal. Gas 270 NOx 07/23/24 low DT0008297 08/06/27 P1 ppm 49.167 50.8 320.00% Pass High
1 Valid Cal. Gas 270 NOx 07/23/24 mid CC258500 01/17/25 P1 ppm 107.967 110.4 220.00% Pass High
1 Valid Cal. Gas 270 NOx 07/23/24 high CC169869 10/09/27 P1 ppm 182.7 183 20.00% Pass High
1 Valid Cal. Gas 270 O2 07/23/24 low DT0016399 08/16/25 P1 % 6 6.3 480.00% Pass 0
1 Valid Cal. Gas 270 O2 07/23/24 mid CC117990 09/11/25 P1 % 13.4 13.5 70.00% Pass 0
1 Valid Cal. Gas 270 O2 07/23/24 high CC244369 11/09/31 P1 % 21 21 0.00% Pass 0
1 Valid Cal. Gas 270 NOx 07/24/24 low CC3243 09/24/27 P1 ppm 48.6 49.6 200.00% Pass High
1 Valid Cal. Gas 270 NOx 07/24/24 mid CC240996 06/09/28 P1 ppm 108.567 108.4 20.00% Pass High
1 Valid Cal. Gas 270 NOx 07/24/24 high DT0038127 12/01/30 P1 ppm 179.5 180 30.00% Pass High
1 Valid Cal. Gas 270 O2 07/24/24 low SGAL1089 06/04/29 P1 % 6.533 6.3 370.00% Pass 0
1 Valid Cal. Gas 270 O2 07/24/24 mid CC144297 08/16/25 P1 % 13.7 13.5 150.00% Pass 0
1 Valid Cal. Gas 270 O2 07/24/24 high CC724241 01/18/29 P1 % 20.9 20.9 0.00% Pass 0
1 Valid Cal. Gas 270 NOx 07/25/24 low CC11331 09/24/27 P1 ppm 49.067 49.7 130.00% Pass High
1 Valid Cal. Gas 270 NOx 07/25/24 mid CC170076 01/17/25 P1 ppm 109.233 110.7 130.00% Pass High
1 Valid Cal. Gas 270 NOx 07/25/24 high DT0029072 12/01/30 P1 ppm 181.467 181 30.00% Pass High
1 Valid Cal. Gas 270 O2 7/25/24 low CC104785 5/29/28 P1 % 6 6 0 Pass 0
1 Valid Cal. Gas 270 O2 7/25/24 mid CC16142 9/11/25 P1 % 14 14 0 Pass 0
1 Valid Cal. Gas 270 O2 7/25/24 high CC282242 8/2/31 P1 % 21 21 0 Pass 0
1 270 0 1/0/00 0 0 1/0/00 0 0 0 0 0 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 0 0 1/0/00 0:00 1/0/00 0:00
1
1 None Reported
1 0 TC 220 Hours 34.10 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 34.81 TC 300 Hours 0.71 FALSE
None Reported None Reported None Reported None Reported None Reported None Reported
3
3
3
3
4
4
4
4
4
4
5
5
5
5
5
5
6
6
6
6
6
6
Point Source
Point Source
Yes
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)
Type Code 450
(Data Excluded)
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)
0
3
3
3
1
2
2
2
2
1
1
1
1
1
3
3
2
2
0
Pacificorp Gadsby 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 2024
1 NOx 08/26/24 09/11/23 11.5 #/MMBtu, CO2dil.0.146 0.14 [d] = 0.006 pass
1 NOx 08/26/24 09/11/23 11.5 ppmvd @ 3 O2 120.633 116.34 5.11% pass
2 NOx 08/26/24 09/15/23 11.4 #/MMBtu, CO2dil.0.144 0.15 [d] = 0.004 pass
2 NOx 08/26/24 09/15/23 11.4 ppmvd @ 3 O2 119.333 115.97 4.56% pass
3 NOx 08/27/24 09/13/23 11.5 #/MMBtu, CO2dil.0.099 0.11 [d] = 0.006 pass
3 NOx 08/27/24 09/13/23 11.5 ppmvd @ 3 O2 81.411 85.36 5.17% pass
4 NOx 08/28/24 09/14/23 11.5 ppmvd @15O2 2.744 2.52 13.30% pass
4 NOx 08/28/24 09/14/23 11.5 #/MMBtu, O2dil. 0.01 0.01 [d] = 0.001 pass
4 O2 08/28/24 09/14/23 11.5 vd 16.078 16.26 1.49% pass
4 CO 08/28/24 09/14/23 11.5 ppmvd @15O2 1.978 1.10 [d] + CC = 0.93A pass
5 NOx 08/28/24 09/15/23 11.4 ppmvd @15O2 3.178 3.43 9.40% pass
5 NOx 08/28/24 09/15/23 11.4 #/MMBtu, O2dil. 0.012 0.01 [d] = 0.001 pass
5 O2 08/28/24 09/15/23 11.4 vd 16.222 16.21 0.35% pass
5 CO 08/28/24 09/15/23 11.4 ppmvd @15O2 2.078 1.77 [d] + CC = 0.36A pass
6 NOx 08/29/24 09/14/23 11.5 ppmvd @15O2 2.456 2.37 6.77% pass
6 NOx 08/29/24 09/14/23 11.5 #/MMBtu, O2dil. 0.009 0.01 [d] = 0.000 pass
6 O2 08/29/24 09/14/23 11.5 vd 16.278 16.41 1.39% pass
6 CO 08/29/24 09/14/23 11.5 ppmvd @15O2 1.522 1.33 [d] + CC = 0.29A pass
*
NSPS CGA Third 2024
Audit Gas Ranges Audit Gas Ranges
AP1 Low AP2 Low AP1 High AP2 High
4 CO 7/23/24 200 49.2 40 to 60
4 CO 7/23/24 200 111 100 to 120
4 CO 7/23/24 20 5 4 to 6
4 CO 7/23/24 20 11.1 10 to 12
5 CO 7/24/24 200 49.5 40 to 60
5 CO 7/24/24 200 110.4 100 to 120
5 CO 7/24/24 20 5.2 4 to 6
5 CO 7/24/24 20 11 10 to 12
6 CO 7/25/24 200 49.2 40 to 60
6 CO 7/25/24 200 110.1 100 to 120
6 CO 7/25/24 20 5 4 to 6
6 CO 7/25/24 20 11.1 10 to 12
*
Acid Rain Audit Linearity Third 2024
Low Span Gas Ranges High Span Gas Ranges
Low Mid High Low Mid High
1 CO2 7/17/24 20 5 4 to 6
1 CO2 7/17/24 20 10.9 10 to 12
1 CO2 7/17/24 20 18 16 to 20
1 NOx 7/17/24 200 50.1 40 to 60
1 NOx 7/17/24 200 108.9 100 to 120
1 NOx 7/17/24 200 180 160 to 200
2 CO2 7/18/24 20 5 4 to 6
2 CO2 7/18/24 20 10.9 10 to 12
2 CO2 7/18/24 20 18 16 to 20
2 NOx 7/18/24 200 50.1 40 to 60
2 NOx 7/18/24 200 108.9 100 to 120
2 NOx 7/18/24 200 180 160 to 200
3 CO2 7/15/24 20 5 4 to 6
3 CO2 7/15/24 20 10.9 10 to 12
3 CO2 7/15/24 20 18.2 16 to 20
3 NOx 7/15/24 50 12.22 10 to 15
3 NOx 7/15/24 50 27.2 25 to 30
3 NOx 7/15/24 50 45.8 40 to 50
3 NOx 7/15/24 200 50 40 to 60
3 NOx 7/15/24 200 109.3 100 to 120
3 NOx 7/15/24 200 180.7 160 to 200
4 NOx 7/23/24 200 50.8 40 to 60
4 NOx 7/23/24 200 110.4 100 to 120
4 NOx 7/23/24 200 183 160 to 200
4 O2 7/23/24 25 6.3 5 to 7.5
4 O2 7/23/24 25 13.5 12.5 to 15
4 O2 7/23/24 25 21 20 to 25
5 NOx 7/24/24 200 49.6 40 to 60
5 NOx 7/24/24 200 108.4 100 to 120
5 NOx 7/24/24 200 180 160 to 200
5 O2 7/24/24 25 6.3 5 to 7.5
5 O2 7/24/24 25 13.5 12.5 to 15
5 O2 7/24/24 25 20.9 20 to 25
6 NOx 7/25/24 200 49.7 40 to 60
6 NOx 7/25/24 200 110.7 100 to 120
6 NOx 7/25/24 200 181 160 to 200
6 O2 7/25/24 25 6.3 5 to 7.5
6 O2 7/25/24 25 13.5 12.5 to 15
6 O2 7/25/24 25 21.1 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
Pacificorp Gadsby 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) 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
Pacificorp Gadsby EER 3Q2024
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels 724 723 721 725 Grand Total
1
CO2
Normal blowback cycle began just as the unit was taken off line or
immediately following a calibration. No action necessary 0.10 0.10
After previous calibration expired when the unit was run again, a
calibration was not performed in the 8 hour grace period after startup
occurred.
14.07 14.07
The sample pump or relay failed resulting in insufficient sample flow to
one or more of the analyzers. The sample pump or relay was repaired
or replaced and the system returned to service.
0.22 0.22
NOx
Normal blowback cycle began just as the unit was taken off line or
immediately following a calibration. No action necessary 0.10 0.10
After previous calibration expired when the unit was run again, a
calibration was not performed in the 8 hour grace period after startup
occurred.
14.07 14.07
The sample pump or relay failed resulting in insufficient sample flow to
one or more of the analyzers. The sample pump or relay was repaired
or replaced and the system returned to service.
0.22 0.22
Lost data. Cause unknown.0.70 0.70
2
CO2
Unit taken or tripped off line before daily calibration was complete. Re-
Calibrate upon next firing.0.05 0.05
NOx
Unit taken or tripped off line before daily calibration was complete. Re-
Calibrate upon next firing.0.05 0.05
3
CO2
Normal blowback cycle began just as the unit was taken off line or
immediately following a calibration. No action necessary 0.02 0.02
NOx
Normal blowback cycle began just as the unit was taken off line or
immediately following a calibration. No action necessary 0.02 0.02
4
NOx
Unit taken or tripped off line before daily calibration was complete. Re-
Calibrate upon next firing.0.08 0.08
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
CO
Unit taken or tripped off line before daily calibration was complete. Re-
Calibrate upon next firing.0.08 0.08
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
O2
Unit taken or tripped off line before daily calibration was complete. Re-
Calibrate upon next firing.0.08 0.08
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
5
NOx
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
CO
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
O2
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
6
NOx
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
Manual or auto cal failure. Cal initiated again without any maintenance
or after minor maintenance adjustments.0.65 0.65
CO
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
O2
QA calibration initiated during a less than complete firing hour.
Operators instructed to wait until first full hour of firing to initiate
calibration.
0.40 0.40
Grand Total 0.23 32.73 0.43 0.70 34.10
Pacificorp Gadsby EER 3Q2024
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
NOx d *
NOx d Type Code 421 (Daily NOx Emissions) - 500 (All)
NOx d *
NOx d Count of Reason Code Column Labels
NOx d Row Labels Grand Total
NOx d 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
Pacificorp Gadsby 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