DAQ-2025-002075

1
DAQC-372-25
Site ID 10096 (B5)

MEMORANDUM

TO: FILE – SUNNYSIDE COGENERATION ASSOCIATES

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: April 14, 2025

SUBJECT: Sunnyside Cogeneration Associates (Sunnyside), Major, NSPS, Title V, Carbon
County – FRS # UT00000049000700030

INSPECTION TYPE: State Electronic Data Report (SEDR) Review

REVIEW DATE: April 14, 2025

SOURCE LOCATION: East Carbon/Emery County

SOURCE CONTACT: Rusty Netz, [phone] x107

APPLICABLE
REGULATIONS: Title V Operating Permit
Permit Number: 700030005
Date of Permit: March 8, 2023
Date of Last Revision: March 8, 2023

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 Sunnyside’s
relative accuracy performance specification test review memorandum.

1 8 2

2
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
Unit 1 2160 SO2 100% 03/06/25 05/23/24 Unit 1 SO2 0.00
0.42
LB/MMBTU
- 30 DRA
Unit 1 2160 NOx 98% 03/06/25 05/23/24 Unit 1 SO2 0.00
1.2
LB/MMBTU
- 30 DRA
Unit 1 2160 O2 100% 03/06/25 05/23/24 Unit 1 SO2 0.00 462 LB/HR -
3 HR BLOCK
Unit 1 2160 Opacity 100% Unit 1 SO2 0.00
462 LB/HR -
24 HR
BLOCK
Unit 1 SO2 0.00
(>70) So2
Removal % -
30 DRA
Unit 1 NOx 0.00
0.25
LB/MMBTU
- 30 DRA
Unit 1 NOx 0.00
0.6
LB/MMBTU
- 30 DRA
Unit 1 Opacity 0.00 10 % - 6 min.
Summary of SO2 Emission Reduction
Percent Removal Required
% Reduction

Point
Source Channel Min Max Days in violation Status
Unit 1 SO2 91% 94% 70% 0 In compliance

Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
Unit 1 SO2 0 0 0 0 0 0.42 LB/MMBTU - 30 DRA
Unit 1 SO2 0 0 0 0 0 1.2 LB/MMBTU - 30 DRA
Unit 1 SO2 0 0 0 0 0 462 LB/HR - 3 HR BLOCK
Unit 1 SO2 0 0 0 0 0 462 LB/HR - 24 HR BLOCK
Unit 1 SO2 0 0 0 0 0 (>70) So2 Removal % - 30
DRA
Unit 1 NOx 0 0 0 0 0 0.25 LB/MMBTU - 30 DRA
Unit 1 NOx 0 0 0 0 0 0.6 LB/MMBTU - 30 DRA
Unit 1 Opacity 0 0 0 0 0 10 % - 6 min.

3
CMS Performance Summary - Hourly Summary
Point
Source Channel Monitor
Malfunction
Non-monitor
Malfunction
QA
Calibrations
Other
Known
Causes
Unknown
Causes
Unit 1 SO2 0 0 4 2 0
Unit 1 NOx 0 0 37 2 0
Unit 1 O2 0 0 4 2 0
Unit 1 Opacity 0 0 8 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
Unit 1 - Cal Check VT49 3/25/24 8.60 1.00 0 low 1 Year
Unit 1 - Cal Check UU35 3/25/24 15.40 1.00 0.1 mid 1 Year
Unit 1 - Cal Check UU36 3/25/24 25.20 1.00 0.1 high 1 Year

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
Unit 1 Stack 3/24/25 9 0.100 0.161
Unit 1 Stack 3/24/25 15 -0.060 0.158
Unit 1 Stack 3/24/25 25 0.160 0.208

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)
Unit 1 Stack 6/12/24 No 0.00 -0.1 0 Yes

Summary of SO2 Emission Reduction
Percent Removal Required Percent
Reduction

Point
Source Channel Min Max Days in violation
Unit 1 SO2 91% 94% 70% 0

4
Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
0 Hours 59 Hours 0 Hours 0 Events

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

CURRENT
RECOMMENDATIONS: All deviations appear to be a result of breakdown or process related
problems that do not warrant issuing a violation. Periods of excess
emissions that were recorded by the CMS in service on each point source
during this reporting period are summarized in the SEDR and described
in Pivot Table 400 “Excess Emissions Review.”

Sunnyside was in compliance during this reporting period. No further
enforcement actions should be taken.

Sunnyside’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.

ATTACHMENT: Excel spreadsheet review
SrnnyriO* Cog*n.lP essociates
P.o. Box 159 ' sunnyside, ural) 84539 . (435) 8sB-4476 . Fax (435) gB8-2538
April9,2025
Rob Leishman
Division of Air Quality
195 North 1950 West
Salt Lake Ciry, Utah g4116
Re: Signed statement for cEM euarterly Report ( I st euarte r,2025 )
Dear Mr. Leishman:
I acknowledge under penalties of law that all infornration contained in thequarterly CEM report is truthful and accttrate, ancl is a complete recorcl of all nronitoringrelated cveuts which occurred during the reporting periocl. This is in zrccorclance witl.rutah Air Rules, R307-170-9(9)(a) anct lu07-415-ld, ,,signecl Statement',.
If you have any questions or if further clarification is necded, plcase contact llustyNetz or myself at [phone].
Thank You,
/-Dfa,, q&elt
Logan Egbert
Agent for
Sunnyside Cogeneration Associates
Rusty Netz
Plant File
co,
Sunnyside Cogeneration Associates
P.o. Box 159 ' Sunnyside, urah 84-539 . (43.5) ttBS-4476 . Fax [phone]tt
age fXs IuilI
S I G N ED S TAT E JI,T E N'I'S1' For any periods for which opacity, sulfur dioxide, or nitrous oxides enrission <Jata is notavailable, changes vyere not . .- made in operation of the emission control system.werelwere not
Explain any changes:
The required continuous monitoring system calibration , span and drift checks and other'iodic audits , have been performed as specified.
have/have not
The data used to show compliance obtained in accordance with approved
representative of plant performance.
was/was not
was
and procedures of part Db and ts
--
is/not
The minimum data requirements 5:xL t't
been met for errors that wereunavoidable
compliance with the standard has been achieved during the reporting period
has/has not
Signed /--Date: 4/912025olt
'esponsibf6 OffiaiA
Sunnyside 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 Logan Egbert 00700030 [phone] Rusty Netz
1 100 0 0 0 0
1 Type Code 110
(Point Source Identification)Type Code Point Source
Quarter
1 - 4 Year
Point Source
Operating Hrs. in
Quarter1 110 1 2025 2160
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 NOx EcoChem MC3 425 0 250 3/27/2019 Stack
1 200 O2 EcoChem MC3 425 0 25 3/27/2019 Stack
1 200 Opacity Durag D-R 290 417243 0 100 4/18/2005 Stack
1 200 SO2 EcoChem MC3 425 0 300 3/27/2019 Stack
1 200 0 0 0 0 0 0 1/0/1900 0
1
Type Code310
(Excess Emissions)
SUMMARY REPORT
Type Code Channel
Total Hours of Excess
Emissions
Excess Emissions -
% of Total
Operating Hours
RC 701 Hours -
start
up/Shutdown
RC 702 Hours-
Control Equipment
Problems
RC 703 Hours -
Process Problems
RC 704, 706, 707
Hours -Other Known
Causes
RC 705 Hours -
Unknown
Causes
Emission
Limitation
Emission
Limitation
Units
Emission
Limitation
Averaging
Period1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 0.42 LB/MMBTU 30 DRA
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 1.2 LB/MMBTU 30 DRA
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 462 LB/HR 3 HR BLOCK
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 462 LB/HR 24 HR BLOCK
1 TRUE 310 SO2 0 0.00% 0 0 0 0 0 (>70) So2 Removal% 30 DRA
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 0.25 LB/MMBTU 30 DRA
1 TRUE 310 NOx 0 0.00% 0 0 0 0 0 0.6 LB/MMBTU 30 DRA
1 TRUE 310 Opacity 0 0.00% 0 0 0 0 0 10 % 6 min.
1 310 0 0 0 0 0 0 0 0 0
1 Type Code 300 (CMS
Performance Summary) Type Code Channel
Point Source Operating
Hours
Downtime - % of
Total Operating
Hours
Total CMS
Downtime
RC 721 Hours -
Monitor
Malfunction
RC 722 Hours -
Non-monitor
Malfunction
RC 723 Hours -
QA Calibrations
RC 724 Hours -
Other Known
Causes
RC 725 Hours
- Unknown
Causes
1 TRUE 300 SO2 2160 0.28% 6 0 0 4 2 0
1 TRUE 300 NOx 2160 1.81% 39 0 0 37 2 0
1 TRUE 300 O2 2160 0.28% 6 0 0 4 2 0
1 TRUE 300 Opacity 2160 0.35% 7.5 0 0 7.5 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
1 373 Days 250 SO2 05/23/24 05/16/23 12 lb/mmBtu 0.19 0.19 3.08% Pass
1 373 Days 250 SO2 05/23/24 05/16/23 12 lbs/hr 119.9 140.3 16.65% Pass
1 373 Days 250 NOx 05/23/24 05/16/23 12 lb/mmBtu 0.271 0.254 7.33% Pass
1 373 Days 250 Flow 05/23/24 05/16/23 12 SCFM 174595 172609 1.36% Pass
1 373 Days 250 O2 05/23/24 05/16/23 12 Percent 5.9 5.7 0.21% 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
1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
1 Type Code 270
(Linearity Test Results)Type Code Channel Date Audit Point No. Cylinder ID
Cylinder
Expiration Date
Type of
Certification
Units of
Measurement CEM Value Cylinder
Value
Precision
%Pass/ Fail Range - High or
Low
1 Valid Cal. Gas 270 NOx 03/06/25 1 CC210097 06/25/32 P1-G1 ppm 61.47 62.9 -2.27% pass Low
1 Valid Cal. Gas 270 NOx 03/06/25 2 ALM012644 02/01/29 P1-G1 ppm 134.4 137.8 -2.47% pass Mid
1 Valid Cal. Gas 270 NOx 03/06/25 3 XC028648B 09/11/32 P1-G2 ppm 225.83 222.8 1.36% pass High
1 Valid Cal. Gas 270 O2 03/06/25 1 SG9166090BAL 12/26/26 P1-G3 ppm 6.27 6.4 -2% pass Low
1 Valid Cal. Gas 270 O2 03/06/25 2 CC484604 09/13/32 P1-G4 ppm 13.9 14.04 -1% pass Mid
1 Valid Cal. Gas 270 O2 03/06/25 3 CC462419 03/23/29 P1-G5 ppm 22.4 22.5 0% pass High
1 Valid Cal. Gas 270 SO2 03/06/25 1 CC210097 06/25/32 P1-G1 ppm 74.3 75.3 -1.33% pass Low
1 Valid Cal. Gas 270 SO2 03/06/25 2 ALM012644 02/01/29 P1-G1 ppm 160.97 167.2 -3.73% pass Mid
1 Valid Cal. Gas 270 SO2 03/06/25 3 XC028648B 09/11/32 P1-G2 ppm 272.27 272.2 0.03% 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 0 0 1/0/00 0:00 1/0/00 0:00
1
1 None Reported
1 0 TC 220 Hours 58.50 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 58.50 TC 300 Hours 0.00 TRUE
None Reported None Reported Yes Yes None Reported None Reported
Point Source
Point Source
Point Source
Point Source
Point Source
Point Source
Yes
Unit 1
0
0
Unit 1
Unit 1
Unit 1
Unit 1
0
Unit 1
Unit 1
Unit 1
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)
Sunnyside Cogeneration Associates
0
Type Code 450
(Data Excluded)
Unit 1
Unit 1
Unit 1
Unit 1
0
Unit 1
Unit 1
Unit 1
0
Unit 1
Unit 1
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)
Unit 1
Unit 1
Unit 1
Unit 1
0
Unit 1
Unit 1
Unit 1
Unit 1
Unit 1
0
Unit 1
Unit 1
Unit 1
Unit 1
Unit 1
0
Sunnyside 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
Unit 1 SO2 05/23/24 05/16/23 12 lb/mmBtu 0.19 0.19 3.08% Pass
Unit 1 SO2 05/23/24 05/16/23 12 lbs/hr 119.9 140.30 16.65% Pass
Unit 1 NOx 05/23/24 05/16/23 12 lb/mmBtu 0.271 0.25 7.33% Pass
Unit 1 Flow 05/23/24 05/16/23 12 SCFM 174595 172609.00 1.36% Pass
Unit 1 O2 05/23/24 05/16/23 12 Percent 5.9 5.70 0.21% Pass
*
Acid Rain Audit Linearity First 2025
Low Span Gas Ranges High Span Gas Ranges
Low Mid High Low Mid High
Unit 1 NOx 3/6/25 250 62.9 50 to 75
Unit 1 NOx 3/6/25 250 137.8 125 to 150
Unit 1 NOx 3/6/25 250 222.8 200 to 250
Unit 1 O2 3/6/25 25 6.4 5 to 7.5
Unit 1 O2 3/6/25 25 14.04 12.5 to 15
Unit 1 O2 3/6/25 25 22.5 20 to 25
Unit 1 SO2 3/6/25 300 75.3 60 to 90
Unit 1 SO2 3/6/25 300 167.2 150 to 180
Unit 1 SO2 3/6/25 300 272.2 240 to 300
*
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
Unit 1 Cal Check VT49 3/25/24 9 1 0 low 1 Year
Unit 1 Cal Check UU35 3/25/24 15 1 0.1 mid 1 Year
Unit 1 Cal Check UU36 3/25/24 25 1 0.1 high 1 Year
*
Opacity Monitor Response (Average of 5)
Low Range Mid Range High Range
Unit 1 Stack 3/24/25 9 0.100 0.063 0.061 0.161
Unit 1 Stack 3/24/25 15 -0.060 0.224 0.218 0.158
Unit 1 Stack 3/24/25 25 0.160 0.049 0.048 0.208
*
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)
Unit 1 Stack 6/12/24 No 0.000 -0.100 0.100 Yes
Type Code 282 (Procedure 3 - Annual Zero Alignment Audit)
Audit Gas Used
Point
Source Location Audit Date Mean Difference Standard Deviation
Confidence
Coefficient
Calibration
Error (≤ 3%)
Type Code 281 (Procedure 3 - COMS Filter Audit Calibration Error)
Point Source Channel Audit Date Low Span High SpanAudit Gas Used
Sunnyside 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
Sunnyside EER 1Q2025
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels 726 724 723 Grand Total
Unit 1
NOx
Failed Calibrations 33 33
General Maintenance 2 2
CGA/Linearity tests 4 4
SO2
General Maintenance 2 2
CGA/Linearity tests 4 4
O2
General Maintenance 2 2
CGA/Linearity tests 4 4
Opacity
Failed Calibrations 5.8 5.8
General Maintenance 0.2 0.2
Completed the quarterly opacity filter test 1.5 1.5
Grand Total 38.8 6.2 13.5 58.5
Sunnyside EER 1Q2025
Opy *
Opy Count of Magnitude of Emissions Column Labels
Opy Row Labels Grand Total
Opy Grand Total
SO2 *
SO2 Type Code 410 (SO2) - 6000 (All)
SO2 *
SO2 Count of Magnitude of Emissions Column Labels
SO2 Row Labels Grand Total
SO2 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 704 726 Grand Total
NOx d Unit 1
NOx d #N/A 88 88
NOx d Failed Calibrations 2 2
NOx d Grand Total 88 2 90
Dat Ex *
Dat Ex Type Code 450
(Data Excluded) - 6000 (All)
Dat Ex *
Dat Ex Count of Channel Column Labels
Dat Ex Row Labels 726 724 723 Grand Total
Dat Ex Unit 1
Dat Ex NOx 1 1 1 3
Dat Ex Failed Calibrations 1 1
Dat Ex General Maintenance 1 1
Dat Ex CGA/Linearity tests 1 1
Dat Ex SO2 1 1 2
Dat Ex General Maintenance 1 1
Dat Ex CGA/Linearity tests 1 1
Dat Ex O2 1 1 2
Dat Ex General Maintenance 1 1
Dat Ex CGA/Linearity tests 1 1
Dat Ex Opacity 2 1 1 4
Dat Ex Failed Calibrations 2 2
Dat Ex General Maintenance 1 1
Dat Ex Completed the quarterly opacity filter test 1 1
Dat Ex Grand Total 3 4 4 11
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
Sunnyside 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 726 Grand Total
Unit 1
NOx 1 1
Failed Calibrations 1 1
Grand Total 1 1
*
Type Code 510
(F-factor, Equations & Conversion Factors) - 500 (All)
Count of F-factor Column Labels
Row Labels SO2 NOx Grand Total
Unit 1
9780 1 1 2
Grand Total 1 1 2
*
Type Code 520
(Minimum Data Not
Obtained <22/30 BODs) - 500
(All)
Count of Channel Column Labels
Row Labels Grand 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 (blank)Grand Total
(blank)
(blank)
(blank)
Grand Total