DAQ-2025-002293

1
DAQC-417-25
Site ID 12495 (B5)

MEMORANDUM

TO: FILE – WEST VALLEY POWER SOURCE GENERATION

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: May 1, 2025

SUBJECT: West Valley Power, Major, NSPS, Title IV, Title V, Salt Lake County,
FRS # UT00000049003500527

INSPECTION TYPE: State Electronic Data Report (SEDR) Review

REVIEW DATE: May 1, 2025

SOURCE LOCATION: Salt Lake City/Salt Lake County

SOURCE CONTACT: Jerame Blevins – 801-798-7489

APPLICABLE
REGULATIONS: Title V Operating Permit
Permit Number: 3500527005
Date of Permit: July 8, 2024
Date of Last Revision: July 8, 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 West Valley’s relative accuracy
performance specification test review memorandum.

SEDR REVIEW:

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
1 214 O2 98% 03/05/25 06/18/24 1 NOx 0.00
5 ppmdv, 15% O2 dry
- 30 day rolling
average
1 214 CO 99% 03/05/25 06/18/24 2 NOx 0.00
5 ppmdv, 15% O2 dry
- 30 day rolling
average

1 8 2

2
First Quarter 2025
% Monitor Availability (MA) Performance Test Dates
(N/A to Opacity)
Summary of Excess Emissions During Point
Source Operation
Point
Source
Op.
hrs. Channel MA CGA Lin RATA Point
Source Channel Hrs. Limitation
1 214 NOx 91% 03/05/25 06/18/24 3 NOx 0.00
5 ppmdv, 15% O2 dry
- 30 day rolling
average
2 338 O2 100% 03/05/25 06/19/24 4 NOx 0.00
5 ppmdv, 15% O2 dry
- 30 day rolling
average
2 338 CO 99% 03/05/25 06/19/24 5 NOx 0.00
5 ppmdv, 15% O2 dry
- 30 day rolling
average
2 338 NOx 99% 03/05/25 06/19/24 1 CO 0.00
10 ppmdv, 15% O2
dry - 30 day rolling
average
3 893 O2 100% 03/05/25 06/20/24 2 CO 0.00
10 ppmdv, 15% O2
dry - 30 day rolling
average
3 893 CO 100% 03/05/25 06/20/24 3 CO 0.00
10 ppmdv, 15% O2
dry - 30 day rolling
average
3 893 NOx 100% 03/05/25 06/20/24 4 CO 0.00
10 ppmdv, 15% O2
dry - 30 day rolling
average
4 592 O2 100% 03/05/25 06/21/24 5 CO 0.00
10 ppmdv, 15% O2
dry - 30 day rolling
average
4 592 CO 97% 03/05/25 06/21/24 1 NOx 0.00
37 All 5, lb/hour,15%
O2 dry - 30 day
rolling average
4 592 NOx 99% 03/05/25 06/21/24 2 NOx 0.00
37 All 5, lb/hour,15%
O2 dry - 30 day
rolling average
5 402 O2 100% 03/05/25 06/17/24 3 NOx 0.00
37 All 5, lb/hour,15%
O2 dry - 30 day
rolling average
5 402 CO 99% 03/05/25 06/17/24 4 NOx 0.00
37 All 5, lb/hour,15%
O2 dry - 30 day
rolling average
5 402 NOx 99% 03/05/25 06/17/24 5 NOx 0.00
37 All 5, lb/hour,15%
O2 dry - 30 day
rolling average
1 CO 0.00
43.75 All 5,
lb/hour,15% O2 dry -
30 day rolling average
2 CO 0.00
43.75 All 5,
lb/hour,15% O2 dry -
30 day rolling average
3 CO 0.00
43.75 All 5,
lb/hour,15% O2 dry -
30 day rolling average

3
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
4 CO 0.00
43.75 All 5,
lb/hour,15% O2 dry -
30 day rolling average
5 CO 0.00
43.75 All 5,
lb/hour,15% O2 dry -
30 day rolling average
1 NOx 0.00
100 ppmdv, 15% O2
dry - 4 hour rolling
average
2 NOx 0.00
100 ppmdv, 15% O2
dry - 4 hour rolling
average
3 NOx 0.00
100 ppmdv, 15% O2
dry - 4 hour rolling
average
4 NOx 0.00
100 ppmdv, 15% O2
dry - 4 hour rolling
average
5 NOx 0.00
100 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 5 ppmdv, 15% O2 dry - 30 day rolling
average
2 NOx 0 0 0 0 0 5 ppmdv, 15% O2 dry - 30 day rolling
average
3 NOx 0 0 0 0 0 5 ppmdv, 15% O2 dry - 30 day rolling
average
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
1 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 30 day
rolling average
2 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 30 day
rolling average
3 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 30 day
rolling average
4 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 30 day
rolling average
5 CO 0 0 0 0 0 10 ppmdv, 15% O2 dry - 30 day
rolling average
1 NOx 0 0 0 0 0 37 All 5, lb/hour,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
2 NOx 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry - 30 day
rolling average
3 NOx 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry - 30 day
rolling average
4 NOx 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry - 30 day
rolling average
5 NOx 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry - 30 day
rolling average
1 CO 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry - 30
day rolling average
2 CO 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry - 30
day rolling average
3 CO 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry - 30
day rolling average
4 CO 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry - 30
day rolling average
5 CO 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry - 30
day rolling average
1 NOx 0 0 0 0 0 100 ppmdv, 15% O2 dry - 4 hour
rolling average
2 NOx 0 0 0 0 0 100 ppmdv, 15% O2 dry - 4 hour
rolling average
3 NOx 0 0 0 0 0 100 ppmdv, 15% O2 dry - 4 hour
rolling average
4 NOx 0 0 0 0 0 100 ppmdv, 15% O2 dry - 4 hour
rolling average
5 NOx 0 0 0 0 0 100 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 O2 0 0 4 1 0
1 CO 0 0 1 2 0
1 NOx 0 0 4 15 0
2 O2 0 0 0 0 0
2 CO 0 0 2 1 0
2 NOx 0 0 2 1 0
3 O2 0 0 0 0 1
3 CO 0 0 1 0 0
3 NOx 0 0 1 0 0
4 O2 0 0 0 0 0
4 CO 11 0 5 1 0
4 NOx 0 0 3 1 0

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

Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
0 Hours 68 Hours 0 Hours 0 Events

SOURCE INSPECTION
SUMMARY EVALUATION: West Valley maintains its CEMS as required in R307-170 and 40 CFR 60.13.
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.”

CURRENT
RECOMMENDATIONS: All deviations appear to be a result of breakdown or process related problems
that do not warrant issuing a violation. West Valley was in compliance during
this reporting period. No further enforcement actions should be taken.

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

HPV: No

RECOMMENDATIONS: Check DAS for daily zero and span drift.
Check the QC program to ensure that monitor drift is being tracked and that the
source can identify excessive drift.

ATTACHMENTS: Excel spreadsheet review
West Valley Power 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 Jerame Blevins 03500527 801-967-1200 Jerame Blevins
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 214.2
1 110 1 2025 338.1
1 110 1 2025 893.7
1 110 1 2025 592.4
1 110 1 2025 402
1 110 0 0 0
1 Type Code 200
(Monitor Identification)Type Code Point Source Channel Manufacturer Model No. Monitor SN Low Span High Span Installation Date Monitor
Location
1 200 CO Thermo 48iQ 1200696554 0 200 6/3/2020 Shelter
1 200 NOx Thermo 42iQLS 1200696549 10 200 6/3/2020 Shelter
1 200 O2 Thermo 48iQ 1200696554 0 25 6/3/2020 Shelter
1 200 CO Thermo 48iQ 1200696555 0 200 6/3/2020 Shelter
1 200 NOx Thermo 42iQLS 1200696550 10 200 6/3/2020 Shelter
1 200 O2 Thermo 48iQ 1200696555 0 25 6/3/2020 Shelter
1 200 CO Thermo 48iQ 1200696556 0 200 6/4/2020 Shelter
1 200 NOx Thermo 42iQLS 120069551 10 200 6/4/2020 Shelter
1 200 O2 Thermo 48iQ 1200696556 0 25 6/4/2020 Shelter
1 200 CO Thermo 48iQ 1200696557 0 200 6/4/2020 Shelter
1 200 NOx Thermo 42iQLS 1200696552 10 200 6/4/2020 Shelter
1 200 O2 Thermo 48iQ 1200696557 0 25 6/4/2020 Shelter
1 200 CO Thermo 48iQ 1200696558 0 200 6/2/2020 Shelter
1 200 NOx Thermo 42iQLS 1200696553 10 200 6/2/2020 Shelter
1 200 O2 Thermo 48iQ 1200696558 0 25 6/2/2020 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 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 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 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 10 ppmdv, 15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 37 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 CO 0 0.00% 0 0 0 0 0 43.75 All 5, lb/hour,15% O2 dry30 day rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 100 ppmdv, 15% O2 dry4 hour rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 100 ppmdv, 15% O2 dry4 hour rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 100 ppmdv, 15% O2 dry4 hour rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 100 ppmdv, 15% O2 dry4 hour rolling average
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 100 ppmdv, 15% O2 dry4 hour rolling average
1 310 0 0 0 0 0 0 0 0 0
3
4
5
1
2
3
4
5
1
2
3
4
5
0
4
5
5
5
0
West Valley Power
0
1
1
1
2
2
2
3
3
3
4
4
1
2
3
1
2
3
4
5
0
3
4
5
1
2
Point Source
4
5
1
2
West Valley Power 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 O2 214.2 2.33% 5 0 0 4 1 0
1 TRUE 300 CO 214.2 1.40% 3 0 0 1 2 0
1 TRUE 300 NOx 214.2 8.87% 19 0 0 4 15 0
1 TRUE 300 O2 338.1 0.00% 0 0 0 0 0 0
1 TRUE 300 CO 338.1 0.89% 3 0 0 2 1 0
1 TRUE 300 NOx 338.1 0.89% 3 0 0 2 1 0
1 TRUE 300 O2 893.7 0.11% 1 0 0 0 0 1
1 TRUE 300 CO 893.7 0.11% 1 0 0 1 0 0
1 TRUE 300 NOx 893.7 0.11% 1 0 0 1 0 0
1 TRUE 300 O2 592.4 0.00% 0 0 0 0 0 0
1 TRUE 300 CO 592.4 2.87% 17 11 0 5 1 0
1 TRUE 300 NOx 592.4 0.68% 4 0 0 3 1 0
1 TRUE 300 O2 402 0.00% 0 0 0 0 0 0
1 TRUE 300 CO 402 1.49% 6 0 0 4 2 0
1 TRUE 300 NOx 402 1.49% 6 0 0 4 2 0
1 300 0 0 0 0 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
1 371 Days 250 NOx 06/18/24 06/13/23 12 ppmv 3.5 3.3 0.21% Pass
1 371 Days 250 NOx 06/19/24 06/14/23 12 ppmv 3.6 3.1 0.59% Pass
1 371 Days 250 NOx 06/20/24 06/15/23 12 ppmv 3.5 3.5 0.11% Pass
1 371 Days 250 NOx 06/21/24 06/16/23 12 ppmv 3.5 3.7 0.29% Pass
1 371 Days 250 NOx 06/17/24 06/12/23 12 ppmv 3.5 3.6 0.33% Pass
1 371 Days 250 NOx 06/18/24 06/13/23 12 lb/hr 4.6 4.4 5.76% Pass
1 371 Days 250 NOx 06/19/24 06/14/23 12 lb/hr 4.7 4.2 17.26% Pass
1 371 Days 250 NOx 06/20/24 06/15/23 12 lb/hr 4.8 4.7 1.85% Pass
1 371 Days 250 NOx 06/21/24 06/16/23 12 lb/hr 4.5 4.9 9.20% Pass
1 371 Days 250 NOx 06/17/24 06/12/23 12 lb/hr 4.9 5 10.21% Pass
1 371 Days 250 NOx 06/18/24 06/13/23 12 lb/mmBtu 0.013 0.012 0.00% Pass
1 371 Days 250 NOx 06/19/24 06/14/23 12 lb/mmBtu 0.013 0.011 0.20% Pass
1 371 Days 250 NOx 06/20/24 06/15/23 12 lb/mmBtu 0.013 0.013 0.00% Pass
1 371 Days 250 NOx 06/21/24 06/16/23 12 lb/mmBtu 0.013 0.014 0.10% Pass
1 371 Days 250 NOx 06/17/24 06/12/23 12 lb/mmBtu 0.013 0.013 0.10% Pass
1 371 Days 250 CO 06/18/24 06/13/23 12 ppmv 1.8 2.5 78.00% Pass
1 371 Days 250 CO 06/19/24 06/14/23 12 ppmv 2.3 3.1 91.00% Pass
1 371 Days 250 CO 06/20/24 06/15/23 12 ppmv 1.8 2.5 79.00% Pass
1 371 Days 250 CO 06/21/24 06/16/23 12 ppmv 2.9 2 97.00% Pass
1 371 Days 250 CO 06/17/24 06/12/23 12 ppmv 1.7 2.7 151.00% Pass
1 371 Days 250 O2 06/18/24 06/13/23 12 percent 15 15.1 0.74% Pass
1 371 Days 250 O2 06/19/24 06/14/23 12 percent 15 15 0.00% Pass
1 371 Days 250 O2 06/20/24 06/15/23 12 percent 14.9 14.9 0.34% Pass
1 371 Days 250 O2 06/21/24 06/16/23 12 percent 14.9 15 0.57% Pass
1 371 Days 250 O2 06/17/24 06/12/23 12 percent 15 15 0.58% 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 CO 03/05/25 Low EB0086542 06/20/31 P1 ppm 55.267 50.1 10.30% Pass Low
1 Valid Cal. Gas 260 CO 03/05/25 Mid ALM-051898 05/15/25 P1 ppm 114.267 110.6 3.30% Pass Mid
1 Valid Cal. Gas 260 CO 03/05/25 Low CC442624 06/20/31 P1 ppm 53.4 51 4.70% Pass Low
1 Valid Cal. Gas 260 CO 03/05/25 Mid CC349049 05/25/29 P1 ppm 111.067 111.1 0.00% Pass Mid
1 Valid Cal. Gas 260 CO 03/05/25 Low CC469972 09/20/29 P1 ppm 52.533 50.4 4.20% Pass Low
1 Valid Cal. Gas 260 CO 03/05/25 Mid CC268514 05/25/29 P1 ppm 111.9 110.8 1.00% Pass Mid
1 Valid Cal. Gas 260 CO 03/05/25 Low CC476102 09/20/29 P1 ppm 52.233 50.3 3.80% Pass Low
1 Valid Cal. Gas 260 CO 03/05/25 Mid CC460233 05/25/29 P1 ppm 110.967 110.6 0.30% Pass Mid
1 Valid Cal. Gas 260 CO 03/05/25 Low CC445198 05/31/30 P1 ppm 52.8 50 5.60% Pass Low
1 Valid Cal. Gas 260 CO 03/05/25 Mid CC450693 05/25/29 P1 ppm 112.567 111 1.40% Pass Mid
1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
2
2
3
3
4
4
5
5
0
2
3
4
5
1
1
3
4
5
1
2
3
4
5
5
3
4
4
4
1
2
3
4
5
1
2
2
2
3
3
1
1
Point Source
Point Source
Point Source
5
0
2
1
1
2
1
5
5
0
0
3
4
West Valley Power EER 1Q2025
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 03/05/25 Low EB0086542 06/20/31 P1 ppm 47.767 50.9 6.20% Pass Low
1 Valid Cal. Gas 270 NOx 03/05/25 Mid ALM-051898 05/15/25 P1 ppm 104.867 109.1 3.90% Pass Mid
1 Valid Cal. Gas 270 NOx 03/05/25 High CC21439 12/17/32 P1 ppm 177.967 177.9 0.00% Pass High
1 Valid Cal. Gas 270 O2 03/05/25 Low CC282492 01/28/33 P1 ppm 6.2 6.2 0% Pass Low
1 Valid Cal. Gas 270 O2 03/05/25 Mid CC741407 05/24/30 P1 ppm 13.5 13.6 1% Pass Mid
1 Valid Cal. Gas 270 O2 03/05/25 High EB0168072 12/17/32 P1 ppm 20.9 20.9 0% Pass High
1 Valid Cal. Gas 270 NOx 03/05/25 Low CC442624 06/20/31 P1 ppm 48.533 50 2.90% Pass Low
1 Valid Cal. Gas 270 NOx 03/05/25 Mid CC349049 05/25/29 P1 ppm 109.833 112.2 2.10% Pass Mid
1 Valid Cal. Gas 270 NOx 03/05/25 High EB0090494 10/28/32 P1 ppm 180.5 178.8 1.00% Pass High
1 Valid Cal. Gas 270 O2 03/05/25 Low XC024742B 06/21/31 P1 ppm 6.3 6.3 0.00% Pass Low
1 Valid Cal. Gas 270 O2 03/05/25 Mid CC204204 06/20/31 P1 ppm 13.5 13.6 0.70% Pass Mid
1 Valid Cal. Gas 270 O2 03/05/25 High CC419229 07/08/32 P1 ppm 20.8 20.9 0.50% Pass High
1 Valid Cal. Gas 270 NOx 03/05/25 Low CC469972 09/20/29 P1 ppm 48.533 50.3 3.50% Pass Low
1 Valid Cal. Gas 270 NOx 03/05/25 Mid CC268514 05/25/29 P1 ppm 111.067 111.5 0.40% Pass Mid
1 Valid Cal. Gas 270 NOx 03/05/25 High ALM065374 10/28/32 P1 ppm 182.7 179.4 1.80% Pass High
1 Valid Cal. Gas 270 O2 03/05/25 Low EB0081623 05/23/30 P1 ppm 6.4 6.3 2% Pass Low
1 Valid Cal. Gas 270 O2 03/05/25 Mid CC326478 06/20/31 P1 ppm 13.9 13.9 0% Pass Mid
1 Valid Cal. Gas 270 O2 03/05/25 High EB0086863 12/17/32 P1 ppm 21 20.9 1% Pass High
1 Valid Cal. Gas 270 NOx 03/05/25 Low CC476102 09/20/29 P1 ppm 48.7 50.2 3.00% Pass Low
1 Valid Cal. Gas 270 NOx 03/05/25 Mid CC460233 05/25/29 P1 ppm 112.4 112.6 0.20% Pass Mid
1 Valid Cal. Gas 270 NOx 03/05/25 High SG9132828BAL 01/14/33 P1 ppm 182.867 181.3 0.90% Pass High
1 Valid Cal. Gas 270 O2 03/05/25 Low EB0141694 05/23/30 P2 ppm 6.4 6.3 1.60% Pass Low
1 Valid Cal. Gas 270 O2 03/05/25 Mid CC333412 05/01/25 P3 ppm 13.567 13.6 0.20% Pass Mid
1 Valid Cal. Gas 270 O2 03/05/25 High ALM051050 12/17/32 P4 ppm 20.9 20.9 0.00% Pass High
1 Valid Cal. Gas 270 NOx 03/05/25 Low CC445198 05/31/30 P1 ppm 47.9 50.2 4.60% Pass Low
1 Valid Cal. Gas 270 NOx 03/05/25 Mid CC450693 05/25/29 P1 ppm 109.167 112.8 3.20% Pass Mid
1 Valid Cal. Gas 270 NOx 03/05/25 High ALM043760 12/17/32 P1 ppm 174.033 177 1.70% Pass High
1 Valid Cal. Gas 270 O2 03/05/25 Low EB0141310 05/23/30 P1 ppm 6.4 6.3 1.60% Pass Low
1 Valid Cal. Gas 270 O2 03/05/25 Mid CC734231 06/20/31 P1 ppm 14 13.9 0.70% Pass Mid
1 Valid Cal. Gas 270 O2 03/05/25 High EB0168167 01/06/33 P1 ppm 21 20.8 1.00% Pass High
1 270 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
1
Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code Channel Start Date Start Time End Date End Time Hours
1 0 210 0 1/0/00 0:00 1/0/00 0:00
1
1 None Reported
1 0 TC 220 Hours 68.20 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 69.00 TC 300 Hours 0.80 FALSE
3
4
1
2
2
2
2
1
1
1
1
1
3
3
2
2
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 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)
Point Source
Point Source
Yes
3
3
3
4
4
4
4
5
5
5
5
5
5
0
4
0
None Reported None Reported None Reported None Reported None Reported None Reported
West Valley Power 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 2025
1 NOx 06/18/24 06/13/23 12 ppmv 3.5 3.30 0.21% Pass
2 NOx 06/19/24 06/14/23 12 ppmv 3.6 3.10 0.59% Pass
3 NOx 06/20/24 06/15/23 12 ppmv 3.5 3.50 0.11% Pass
4 NOx 06/21/24 06/16/23 12 ppmv 3.5 3.70 0.29% Pass
5 NOx 06/17/24 06/12/23 12 ppmv 3.5 3.60 0.33% Pass
1 NOx 06/18/24 06/13/23 12 lb/hr 4.6 4.40 5.76% Pass
2 NOx 06/19/24 06/14/23 12 lb/hr 4.7 4.20 17.26% Pass
3 NOx 06/20/24 06/15/23 12 lb/hr 4.8 4.70 1.85% Pass
4 NOx 06/21/24 06/16/23 12 lb/hr 4.5 4.90 9.20% Pass
5 NOx 06/17/24 06/12/23 12 lb/hr 4.9 5.00 10.21% Pass
1 NOx 06/18/24 06/13/23 12 lb/mmBtu 0.013 0.01 0.00% Pass
2 NOx 06/19/24 06/14/23 12 lb/mmBtu 0.013 0.01 0.20% Pass
3 NOx 06/20/24 06/15/23 12 lb/mmBtu 0.013 0.01 0.00% Pass
4 NOx 06/21/24 06/16/23 12 lb/mmBtu 0.013 0.01 0.10% Pass
5 NOx 06/17/24 06/12/23 12 lb/mmBtu 0.013 0.01 0.10% Pass
1 CO 06/18/24 06/13/23 12 ppmv 1.8 2.50 78.00% Pass
2 CO 06/19/24 06/14/23 12 ppmv 2.3 3.10 91.00% Pass
3 CO 06/20/24 06/15/23 12 ppmv 1.8 2.50 79.00% Pass
4 CO 06/21/24 06/16/23 12 ppmv 2.9 2.00 97.00% Pass
5 CO 06/17/24 06/12/23 12 ppmv 1.7 2.70 151.00% Pass
1 O2 06/18/24 06/13/23 12 percent 15 15.10 0.74% Pass
2 O2 06/19/24 06/14/23 12 percent 15 15.00 0.00% Pass
3 O2 06/20/24 06/15/23 12 percent 14.9 14.90 0.34% Pass
4 O2 06/21/24 06/16/23 12 percent 14.9 15.00 0.57% Pass
5 O2 06/17/24 06/12/23 12 percent 15 15.00 0.58% Pass
*
NSPS CGA First 2025
Audit Gas Ranges Audit Gas Ranges
AP1 Low AP2 Low AP1 High AP2 High
1 CO 3/5/25 200 50.1 40 to 60
1 CO 3/5/25 200 110.6 100 to 120
2 CO 3/5/25 200 51 40 to 60
2 CO 3/5/25 200 111.1 100 to 120
3 CO 3/5/25 200 50.4 40 to 60
3 CO 3/5/25 200 110.8 100 to 120
4 CO 3/5/25 200 50.3 40 to 60
4 CO 3/5/25 200 110.6 100 to 120
5 CO 3/5/25 200 50 40 to 60
5 CO 3/5/25 200 111 100 to 120
*
Acid Rain Audit Linearity First 2025
Low Span Gas Ranges High Span Gas Ranges
Low Mid High Low Mid High
1 NOx 3/5/25 200 50.9 40 to 60
1 NOx 3/5/25 200 109.1 100 to 120
1 NOx 3/5/25 200 177.9 40 to 60 100 to 120 160 to 200
1 O2 3/5/25 25 6.2 5 to 7.5
1 O2 3/5/25 25 13.6 12.5 to 15
1 O2 3/5/25 25 20.9 5 to 7.5 12.5 to 15 20 to 25
2 NOx 3/5/25 200 50 40 to 60
2 NOx 3/5/25 200 112.2 100 to 120
2 NOx 3/5/25 200 178.8 40 to 60 100 to 120 160 to 200
2 O2 3/5/25 25 6.3 5 to 7.5
2 O2 3/5/25 25 13.6 12.5 to 15
2 O2 3/5/25 25 20.9 5 to 7.5 12.5 to 15 20 to 25
3 NOx 3/5/25 200 50.3 40 to 60
3 NOx 3/5/25 200 111.5 100 to 120
3 NOx 3/5/25 200 179.4 40 to 60 100 to 120 160 to 200
3 O2 3/5/25 25 6.3 5 to 7.5
3 O2 3/5/25 25 13.9 12.5 to 15
3 O2 3/5/25 25 20.9 5 to 7.5 12.5 to 15 20 to 25
4 NOx 3/5/25 200 50.2 40 to 60
4 NOx 3/5/25 200 112.6 100 to 120
4 NOx 3/5/25 200 181.3 40 to 60 100 to 120 160 to 200
4 O2 3/5/25 25 6.3 5 to 7.5
4 O2 3/5/25 25 13.6 12.5 to 15
4 O2 3/5/25 25 20.9 5 to 7.5 12.5 to 15 20 to 25
5 NOx 3/5/25 200 50.2 40 to 60
5 NOx 3/5/25 200 112.8 100 to 120
5 NOx 3/5/25 200 177 40 to 60 100 to 120 160 to 200
5 O2 3/5/25 25 6.3 5 to 7.5
5 O2 3/5/25 25 13.9 12.5 to 15
5 O2 3/5/25 25 20.8 5 to 7.5 12.5 to 15 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
West Valley Power EER 1Q2025
Monitoring Information TC 210, 230, & 240
Type Code 210
(Pollutant Concentration Exceeded Span of CEM) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)0 0
Grand Total 0 0
*
Type Code 230
(Manual Sample - Alternate Sampling During Monitor Outage) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)0 0
Grand Total 0 0
*
Type Code 240
(CEM Modifications) - 100 (All)
*
Count of Channel Column Labels
Row Labels (blank) Grand Total
(blank)
(blank)
Grand Total
West Valley Power EER 1Q2025
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels (blank) 724 723 725 721 Grand Total
(blank)
(blank)
0 0
1
CO
No action 0.98 0.98
Unit start-up calibration 0.98 0.98
Calibration was started, but did not complete successfully before unit
was shut down 0.98 0.98
NOx
No action 0.98 0.98
Unit start-up calibration 0.98 0.98
Calibration was started, but did not complete successfully before unit
was shut down 0.98 0.98
Failed calibration test- recalibration 2.95 2.97 5.92
Maintenance 9.97 9.97
O2
No action 0.98 0.98
Unit start-up calibration 0.98 0.98
Calibration was started, but did not complete successfully before unit
was shut down 0.98 0.98
Failed calibration test- recalibration 1.98 1.98
2
CO
No action 0.98 0.98
Unit start-up calibration 1.97 1.97
NOx
No action 0.98 0.98
Unit start-up calibration 1.97 1.97
3
CO
Unit start-up calibration 0.98 0.98
NOx
Unit start-up calibration 0.98 0.98
O2
No action 0.98 0.98
4
CO
No action 0.98 0.98
Unit start-up calibration 2.95 2.95
Failed calibration test- recalibration 1.98 1.98
Repair analyzer 10.98 10.98
NOx
No action 0.98 0.98
Unit start-up calibration 2.95 2.95
5
CO
No action 1.97 1.97
Unit start-up calibration 3.93 3.93
NOx
No action 1.97 1.97
Unit start-up calibration 3.93 3.93
Grand Total 0 25.70 30.53 0.98 10.98 68.20
West Valley Power 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
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
West Valley Power 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