DAQ-2025-001215

YragflsgsP Hunter Plant
1000 South Highway l0
P.O. Box 569
Castle Dale, UT 84513
January 10,2025
Mr. Bryce Bird, Director
Utah Department of Environmental Quality
Division of Air Quality
195 North 1950 West
P.O. Box 144820
Salt Lake city, uT 84114-4820
RE: Quarterly Compliance Report 40 CFR 63 SubPart UUUUU,
Hunter Power Plant (Title V Permit #1500f01004)
Dear Mr. Bird:
FiB 1 B 2025
The reporting requirements for periodic compliance reports changed beginning on January l,
2024. $63. I 003 I (g) requires MATS affected sources to begin submitting quarterly compliance
reports beginning with the first calendar quarter of 2024 using applicable data elements found in
Appendix E to Subpart UUWU. Appendix E section 1.0 states that the "applicable data
elements in sections 2 through 13 of this appendix must be reported in the quarterly compliance
reports required under $63.10031(g), in an .xml format prescribed by the Administrator." The
existing Emissions Collection And Monitoring Plan System (ECMPS) 1.0 application was to be
upgraded to ECMPS 2.0, a web-based platform and was to include the new quarterly MATS
reporting requirements. Because of the uncertainty caused by the delay of ECMPS 2.0 and the
lack of a.xml reporting schema provided by EPA for the reporting of MATS data, PacifiCorp
contacted EPA Region 8 via telephone on February 29,2024 to ask for guidance. Based on this,
and a subsequent discussion on March 4,2024 between PacifiCorp and EPA Region 8
representatives, it was suggested that PacifiCorp continue to submit compliance data in a file
format that is most suitable for demonstrating compliance with the MATS rule and applicable
elements of appendix E to Subpart UUUUU until further guidance andl/or reporting schema are
provided by EPA. PacifiCorp was directed to discuss the reporting format and filetype with
Department of Environmental Quality contacts for each affected source and has done so. Please
reference PacifiCorp's March 26,2024letter regarding this subject.
Until further guidance or reporting schema are provided by EPA, PacifiCorp plans to continue to
submit all compliance data required by the MATS rule in accordance with $63.10031(g)
beginning with a quarterly compliance report for the first quarter,2024 in .pdf format.
PacifiCorp will submit .xml files, where applicable, generated using the Electronic Reporting
Tool to ECMPS 1.0, with the report. The Hunter Plant will continue to comply with all MATS
related requirements for each of its affected sources.
I am authorized to make this submission on behalf of the owners and operators of the aflected
source or affected units for which the submission is made. I certifu under penalty of law that I
DIVISION OFAIR OUALITY
REVIEWED
Initials JBR Date 3/3/25
Comp Status Meets
File # 10237 Blue 2
all within limits.
have personally examined, and am familiar with, the statements and information submitted in
this document and all its attachments. Based on my inquiry of those individuals with primary
responsibility for obtaining the information, I certift that the statements and information are to
the best of my knowledge and belief tnre, accurate, and complete. I am aware that there are
significant penalties for submitting false statements and information, or omitting statements and
information, including the possibility of fine or imprisonment.
Should you have any questions regarding this information, please contact Terry Guthrie,
Environmental , Hunter & Huntington Power Plants at [phone] or me at (435)
748-621r.
Sincerely,
ng Director Hunter Power Plants
Enclosures: Mercury and Air Toxics Semiannual Compliance Report with attachments A thru C - Unit I
Mercury and Air Toxics Semiannual Compliance Report with attachments A thru C - Unit 2
Mercury and Air Toxics Semiannual Compliance Report with attachments A thru C - Unit 3
cc: Eve Paulson - 310 NTO
Terry Guthrie - Hunter Power Plant
TAH DEPARTMENT OF
E NVI RON M E NTAL ! UALITY
FEB 1 I 2025
DlVISION OF AIR OUALITY
PncIFICoRP
Hunter Power Plant
MATS Quarterly Compliance Report Unit 1
40 cFR 53.10031(e)
October L, 2024 - December 3L, 2024
't'
Section I .0 - tlnit I Report Summary
Name and address of the affected source
Hunter Power Plant, 1000 S. Highway l0
Castle Dale Utah
P.O. Box 569
Castle Dale, Utah 84528
Identification of eachhazardous air pollutant monitored at the affected source
I. Non-Mercury FIAPS metals using a quarterly filterable particulate matter (PM) stack
test as a surrogate to demonstrate compliance. On April 6,2018 the Utah Department
of Environmental Quality - Division of Air Quality agreed that the Hunter Plant Unit I
met the requirements to qualifr as a low emitting EGU (LEE) unit. The Hunter Plant
submitted a summary table showing three years of quarterly test data. Each particulate
matter (PM) testing result was below one-half of the 0.030 lb/MMBtu limit or 0.015
lb/IVIMBtu as required by the subpart.
II. Acid gases using sulfur dioxide (SOz) as a surrogate to demonsfate compliance by an
SOz continuous emissions monitoring system (CEMS).
UI. Mercury (Hg), compliance demonstrated by an annual EPA Method 30B sorbent trap
test to re-confirm LEE status.
A brief desciiption of the process unit
Hunter Unit I is an Electric Utility Steam Generating Unit, designed as a dry bottom
tangentially-fi red boiler, designed by Combustion Engineering.i. Rated Heat Input Capacity of 4,750 MMBtu/hr.
ii. The unit is equipped with the following add-on controls:
l. Pulse Jet Fabric Filter (baghouse)
2. Wet Lime Flue Gas Desulfurization (wet scrubber)
3. Low-NOx burner technolory, with closed-coupled over-fire air
iii. Fuels used are sub-bituminous coal using #2 fuel oil for startup fuel when
needed.
Unit Category
i. Unit I is an existing coal-fired unit combusting non-low rank virgin coal
demonstrating compliance with the emission limits found in Table 2 to Subpart
UUWU of Part 63
The emission and operating parameter limitationsi. Filterable PM quarterly stack testing demonstrating compliance with a 0.030
lbA,IMBtu emission limit. The unit has demonstrated and achieved low
emitting EGU (LEE) status.
I.
II.
III.
ii. SOz CEMS as a surrogate for acid gases reporting hourly averages in units of
lb/It4MBtu demonstrating compliance with a 30 boiler-operating-day average
limit of 0.20 lb/I\4MBtu.
iii. Hg annual EPA Method 30B sorbent ffap test reporting hourly averages in
units of Ib/TBtu demonstrating compliance with a 30 boiler-operating-day
average of 1.2 lb/TBtu.
A description of any changes in CMS, processes, or controls since the last reporting
period
No changes occurred during the reporting period that would affect compliance to MATS.
Recent performance test results
Table l-2: Unit I Mercury LEE Test Results Summara
Table 1-1: Unit I Filterable Particulate Matter LEE Test Results Summary
Test ID Test Date
Average
PM rate
(lb/mmBtu)
MATS
PM
Limit*
Average
PM
(tb/1vIW-hr)
MATS
PM
Limit*
Unit Status
2024 0211412024 0.003 0.030 0.03 0.30
LEE
Achieved in
201 8.
Maintained
with
211412024
LEE test
*Low Emitter Limits are 0.015 IbA,IM-BTU and 0.15 lbs/]vIW-HR
Test ID Test Date
Hg rate
(lb/TBtu)
MATS
Hg
Threshold
Unit Status
2024 1U1712024 0.01 0.12
LEE Achieved.
Maintained with
1l/1712024 LEE test
Section 2.0 - unit I MATS Compliance Report Root Data Elements
Table 2-1: Root Data Elements
2.1 Facilitv ORIS Code 6165
2.2 Facilitv Name Hunter
2.3 Facility Registry Identifier (OzuSPL)8069
2.4 Title 40 Part 63
2.5 Applicable Subpart UUUW
2.6 Calendar Year 2024
2.7 Calendar Quarter 4th Ouarter
2.8 Submission Comment (optional)See cover letter
Section 3.0 - Unit I Performance Stack Test Summary
For applicable elements of Appendix E Section 3.1-3.14, see stack testing reports submitted for the
quarter. Stack testing data is being provided in both .xml and .pdf formats.
Section 4.0 - Operating Limit Data (PM, CPMS, only)
No PM CPMS on unit. Section not applicable.
Section 5.0 - Unit I Performance Test Run Data
For applicable elements of Appendix E Section 5.1-5.8, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 6.0 - Unit I Conversion Parameters
For applicable elements of Appendix E Section 6.1-6.3, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 7.0 - Unit I Quality Assurance Parameters
For applicable elements of Appendix E Section 7.1-7.3, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xmland .pdf formats.
Section 8.0 - Averaging Group
Unit is not part of an averaging group.
Section 9.0 - Unit I Compliance Averages
Please see Attachment A-1 which includes 30-boiler-operating-day average data for sulfur dioxide.
Section 10.0 - Unit I Information
Section I 1.0 - Unit I Fuel Usage Information
Table 11-l Quarterly Fuel Usage Information
4
Table lG'l: Unit Information
Section Data Element Plant Data
l0.l Unit ID;Unit I
10.2
Date of Last Tune-up; and
Burner Tin Inspection June 6. 2024: March 20. 2024
10.3 Emergency Bypass Information.No emersencv bvoass occurred durine ouarter
Month #2 FuelOil Burned (gallons)Sub-Bituminous Coal Burned (tons)
October 1,244 79,593
November 0 80,041
December 1,806 78,791
Total 3,050 238,425
Note: No new fuel types were combusted during the reporting period.
Section 12.0 and 13.0 - Unit I Malfunction, Deviations, and Monitoring
Downtime Information
Table l2-l Monitoring Equipment Manufacturer and Model number
Pollutant Manufacturer Model Number
Sulfur Dioxide Thermo 43iQ
Carbon Dioxide
(COz)t Thermo 4rOiQ
Table 12-2: Most Recent CMS Certilication or Audit
UI CEMS Analyzer Latest RATA Date Latest Linearity Date
Carbon Dioxide (COz)10115/2024 t0122/2024
Sulfur Dioxide (SOz)t0/15t2024 10122t2024
Table l2-3: Unit Operating Time During the Reporting Period
Ul Operating Period llours of Unit Operation
4b Quarter,2024 2,208
Table 12-4: Excess Emission Summaly
I The COz analyzer is used as a diluent for calculating heat input-based emission limits
5
Ul Excess Emissions
Summara
PM SOz Hg
Total Hours of Exceedance 0 0 0
Exceedance percent of total
operating hours 0.0 0.0%0.0
Hours during startup and
shutdown 0 0 0
Hours during control
equipment problems 0 0 0
Hours during process hours 0 0 0
Hours during other know
problems 0 0 0
Hours during unknown causes 0 0 0
Emission Limit 0.030 0.20 t.2
Em ssion Limitation Unit lb/lvlMBtu lb/lvlMBtu LblTBtu
Em ission lim itation averaging
period
Quarterly Stack
Testing
30 boiler
operating-day
30 boiler
operating-day
Table 12-5: CMS performance summary
Uf CMS Performance Summaly SOz
Downtime percent of total operating hours 0.09 %
Total hour of CMS downtime r.98
Hours due to monitoring equipment malfunctions 0
Hours due to non-monitoring equipment malfunctions 0
Hours due to quality assurance/quality control calibrations 0
Hours due to other known causes 1.98
Hours due to other unknown causes 0
For applicable elements of Appendix E Sections 12.1-12.3 and l3.l-13.5, see Attachments B and C.
No deviations from rule requirements occurred other than those stated on this report and attachments.
Sections 14.0 through 30.0 - Reference Method Data
For applicable elements of Appendix E Sections 14-30, see stack testing repofts submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 3l .0 - Other Information for Each Test or Test Series
In accordance with section 3l.0 and to provide reporting transparency, all stack testing data
relevant to compliance with Subpart UUWU of Part 63 is being submitted in pdf format with
this quarterly compliance report.
Report Certification
of the report:
6v*r*Responsible Official
Managing Director - Hunter Power Plant
Attachments:
Attachment A: MATS 30-Day Rolling SOz lb/lvlMBtu Average Data
Attaphment B: SOz Monitor Downtime Events Report
Attachment C: Excess Emissions Report
Attachment A
MATS 30-Day Rotting SO2 tb/MMBtu Average Data
Value = Offline Data
Valuea = Average represents a building 30D Average
Value = Exceedance
Report Generated: 02/tO/25 09:28
MATS 30 Day Rolling Average
Plant: HUNTER PI-ANT
Repoft Period: 1010U2024 Through LZ|3U2024
Source: UNIT1 Parameter: SO2RMATS
Report Version 5.2
HTRDAHS04\\reportus€r
Date 1-Day Avg 3O-Day Avg Total
OperaUng
Valid Operating
Hours
Invalid
Operating
Monitor
Availability
1011t2024 0.075 0.076 720 716 4 s9.4%
10t2t2024 0.076 0.076 720 716 4 99.40/o
10t3t2024 0.072 0.076 720 7',t6 4 99.4%
10t4t2024 0.061 0.075 720 716 4 99.4o/o
10t5t2024 0.08 0.075 720 7'.t6 4 99.4%
10t6t2024 0.o77 0.075 720 716 4 99.40
10t712024 0.0s1 0.076 720 7',t6 4 99.40/o
101812024 0.08 0.076 720 716 4 99.4%
1019t2024 0.08 0.076 720 716 4 99.4o/o
10110t2024 0.08 0.076 720 716 4 99.4Vo
10t11t2024 0.074 0.076 720 716 4 99.4Yo
10t142024 0.081 0.077 720 716 4 99.4Yo
10t13t2024 0.08 0.077 720 716 4 99.4o/o
10t14t2024 0.075 o.o77 720 714 6 99.2o/o
10t15t2024 0.076 0.077 720 714 6 99.2o/o
10t't6t2024 0.08 0.077 720 7',t4 6 99.2%
10t17t2024 0.08 0.077 720 717 3 99.6%
't0t18t2024 0.075 0.078 720 718 2 99.7Yo
10t19t2024 0.079 0.078 720 714 2 99.70/
10120t2024 0.074 0.078 720 7',18 2 99.7o/o
10t21t2024 0.076 0.078 720 7',tB 2 99.7o/.
10t22t2024 0.082 0.078 720 718 2 99.7%
10t23t2024 0.076 0.078 720 718 2 99.7o/o
10t24t2024 0.078 0.078 720 718 2 99.7%
10t25t2024 0.076 0.077 720 718 2 99.7o/o
10t26t2024 0.076 0.077 720 7 I 2 99.7o/o
10127t2024 0.077 o.o77 720 7 8 2 99.7o/o
10t28t2024 0.07 o.077 720 7 I 2 99.lYo
10t29t2024 0.076 o.o77 720 7 8 2 99.7%
10130t2024 0.079 o.077 720 718 2 99.7o/o
10131t2024 0.076 o.077 720 718 2 99.7o/o
11t1t2024 0.073 o.077 720 718 2 99.7o/o
1 t2t2024 0.081 0.077 720 718 2 99.7o/o
,|t3t2024 0.067 0.078 720 718 2 99.7o/o
1 t4t2024 0.069 0.077 720 718 2 99.7%
1 t5t2024 0.068 0.077 720 7',tg 2 99.70/
1 t6t2024 0.067 0.076 720 7',tg 2 99.7%
1 1712024 o.o77 0.076 720 718 2 99.7%
1 t8t2024 0.078 0.076 720 718 2 99.7o/o
1 1912024 0.078 0.076 720 718 2 99.7o/o
Value = Offline Data
valuer = Averate represents a building 30D Average
Value = Exceedance
Report Generate d: 02 / LO / 25 09 :28
MATS 30 Day Rolling Average
P|ant: HUNTER PLANT
Repoft Period: LO|0U2024 Throuqh LZl3t/2024
Source: UNIT1 Parameter: SO2RMATS
Report Version 5.2
HTRDAHS04\\reportuser
11t10t2024 0.075 0.076 720 718 2 99.70/o
1"U1112024 0.082 0.076 720 718 2 99.70/
11t12t2024 0.08 0.076 720 7',18 2 99.7o/o
11113t2024 0.077 0.076 720 720 0 100.0%
1111412024 0.07 0.076 720 720 0 't00.0%
11t15t2024 0.o77 0.076 720 720 0 100.0%
'11t16t2024 0.076 0.076 720 720 0 100.0%
11117t2024 0.078 0.076 720 720 0 't00.0%
1111812024 0.077 0.076 720 720 0 1OO.Oo/.
11t19t2024 0.079 0.076 720 720 0 100.0%
1112012024 0.08 0.076 720 720 0 100.0%
11t2112024 0.083 0.076 720 720 0 100.0%
1',U2212024 0.084 0.076 720 720 0 100.0%
11t23t2024 0.o77 0.076 720 720 0 100.0%
11t24t2024 0.085 0.076 720 720 0 100.0%
1112512024 0.067 0.076 720 720 0 100.0%
11t26t2024 o.o74 0.076 720 720 0 100.0%
11t27t2024 0.071 0.076 720 720 0 100.0%
1112812024 0_067 0.076 720 720 0 100.0%
11t29t2024 0.o77 0.076 720 720 0 100.0%
11130t2024 0.076 0.076 720 720 0 100.0%
1211t2024 0.072 0.076 720 720 0 100.0%
121212024 0.065 0.075 720 720 0 100.0%
12t312024 0.079 0.075 720 720 0 100.0%
12t4t2024 0.082 0.076 720 720 0 100.0%
12t5t2024 0.082 0.076 720 720 0 100.0%
121612024 0.082 o.o77 720 720 0 100.0%
12t7t2024 0.078 0.077 720 720 0 100.0%
12t812024 0.079 0.077 720 720 0 100.0%
121912024 0.083 0.077 720 720 0 100.0%
12t10t2024 0.083 o.077 720 720 0 100.0%
12t11t2024 0.083 o.o77 720 720 0 100.0%
12t12t2024 0.082 0.078 720 720 0 100.0%
12t13t2024 0.075 o.o77 720 720 0 100.0%
12t14t2024 0.078 0.078 720 720 0 '100.0%
1211512024 0.083 0.078 720 720 0 100.0%
12t16t2024 0.08 0.078 720 720 0 100.0%
12t17t2024 0.o74 0.078 720 720 0 100.0%
12t18t2024 0.07 0.078 720 720 0 100.0%
12119t2024 0.072 0.077 720 720 0 100.0%
12t20t2024 0.065 o.o77 720 720 0 100.07o
12t21t2024 0.074 o.077 720 720 0 100.0%
MATS 30 Day Rolling Average
Plant: HUNTER PIANT
Repoft Period: L010U2024 Throuqh LZl3Ll2024
Source: UNIT1 Parameter: SO2RMATS
Value = Offline Data
value' = Average represents a buildint 30D Averate
Value = Exceedance Report Version 5.2
Report Generate d: O2ltO/25 O9:28 HTRDAHSO4\\reportuser
12t242024 0.081 0.077 720 720 0 100.0%
12123t2024 0.067 0.076 720 720 0 100.0o/o
12124t2024 0.078 0.076 720 720 0 100.070
1212512024 o.077 0.076 720 720 0 1OO-Oo/o
1212612024 0.075 0.076 720 720 0 100.0%
12t2712024 o.074 0.076 720 720 0 100.0%
1A242024 0.062 0.076 720 720 0 '100.00/o
12t2912024 0.075 0.076 720 720 0 100.0%
1213012024 0.081 0.076 720 720 0 100.0%
12131t2024 0.081 0.077 720 720 0 100.00/o
Attachment B
SO, Monitor Downtime Events Report
Downtime Events - Duration
Plant: HUNTER PLANT
Report Period: 1010112024 00:00 Through 1213112024 23:59
Time Online Criteria: 1 minute(s)
Source:
Pararneter:
lnterval:
UNITl
SO2RMATS
001H
lncident lD Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Desaipflon
Action Code - Descrlptlon
10t't412024'17:00 1O11412024 18:59 0d-2h-0m 00
00
- Default
- (default)
NumberofEventc: 1
Total Duratlon: 0d - 2h - 0m
' lndicates duration incident could have additional data prior to the start dato or following the end date.
Report Generated:02110125 09:45 Report Version 4.0 HTRDAHS04\reportuser
Attachment C
Excess Emissions Report
Attachment C
Unit I Excess Emissions Report
PM Excess Emissions
0.030 lbA,IMBtu (Quarterly Stack Testing)
Total time for all excess emissions 0.0 hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No PM Excess Emissions occurred during the reporting period
No PM Malfunction occurred during the reporting period
SOz Excess Emissions
0.20 lbA{MBtu (30 Boiler Operating Day Average)
Total time for all excess emissions !Q hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No SOz Excess Emissions occurred during the reporting period
SOz monitor equipment malfunctions noted in Attachment B.
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
YAI Cause Corrective
Action
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
Hg Excess Emissions
1.2 lb/TBtu (30 Boiler Operating Day Average)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No Hg Excess Emissions occurred during the reporting period
Hg monitor equipment malfunctions noted in Attachment B.
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/tIMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
YA{Cause Corrective
Action
TTAx DTPARTMENT oF
ENy!reIM-ENTAL ouAqY
FEB 1 I 2025
DIVISION OF AIR OUALITY
l?ncrFtCoRP
Hunter Power Plant
MATS Quarterly Compliance Report Unit 2
40 CFR 63.10031(e)
October t,2024 - December 3L,2O24
Section I .0 - Unit 2 Report Summary
Name and address of the affbcted source
Hunter Power Plant, 1000 S. Highway 10
Castle Dale Utah
P.O. Box 569
Castle Dale, Utah 84528
Identification of each hazardous air pollutant monitored at the affected source
I. Non-Mercury HAPS metals using a quarterly filterable particulate matter (PM) stack
test as a surrogate to demonstrate compliance. On June 6, 2018 the Utah Department of
Environmental Quality - Division of Air Quality agreed that the Hunter Plant Unit 2
met the requirements to quali$ as a low emitting EGU (LEE) unit. The Hunter Plant
submitted a summary table showing three years of quarterly test data. Each particulate
matter (PM) testing result was below one-half of the 0.030 lb/MMBtu limit or 0.015
lb/IvIMBtu as required by the subpart.
II. Acid gases using sulfur dioxide (SOz) as a surrogate to demonstrate compliance by an
SOz continuous emissions monitoring system (CEMS).
III. Mercury (Hg), compliance demonstrated by an annual EPA Method 30B sorbent trap
test to re-confirm LEE status.
A brief description of the process unit
Hunter Unit 2 is an Electric Utility Steam Generating Unit, designed as a dry bottom
tangentially-fired boiler, designed by Combustion Engineering and Wilcox.
i. Rated Heat Input Capacity of 4,750 MMBtu/hr.
ii. The unit is equipped with the following add-on controls:
1. Pulse Jet Fabric Filter (baghouse)
2. Wet Lime Glue Gas Desulfurization (wet scrubber)
3. Low-NOx burner technology, with separated over-fire air
iii. Fuels used are sub-bituminous coal using #2 fuel oil for startup fuel when
needed.
Unit Category
i. Unit 2 is an existing coal-fired unit combusting non-low rank virgin coal
demonstrating compliance with the emission limits found in Table 2 to Subpart
UUUUU of Part 63
The emission and operating parameter limitationsi. Filterable PM quarterly stack testing demonstrating compliance with a 0.030
lb/IvIMBtu emission limit. The unit has demonstrated and achieved low
emitting EGU (LEE) status.
I.
II.
III.
SOz CEMS as a surrogate for acid gases reporting hourly averages in units of
lb/IvIMBtu demonstrating compliance with a 30 boiler-operating-day average
limit of 0.20lba4MBtu.
Hg annual EPA Method 30B sorbent trap test reporting hourly averages in
units of lb/TBtu demonstrating compliance with a 30 boiler-operating-day
average of 1.2 lb/TBtu.
A description of any changes in CMS, processes, or controls since the last reporting
period
No changes occurred during the reporting period that would affect compliance to MATS.
Recent perforrnance test results
il.
Iil.
Table 1-1: Unit 2 Filterable Particulate Matter LEE Test Results Summary
Test ID Test Date
Average
PM rate
(lb/mmBtu)
MATS
PM
Limit*
Average
PM
(b/lvlW-hr)
MATS
PM
Limit*
Unit Status
2024 02t13t2024 0.00s 0.030 0.05 0.30
LEE
Achieved in
201 8.
Maintained
with
2113/2024
LEE test
*[,ow Emitter Limits are 0.015 IbA4M-BTU and 0.15 lbs/l\'IW-HR
Table l-2: Unit 2 Mercury LEE Test Results Sum
nlt712024
LEE Achieved.
Maintained with
1112912023 LEE test
Section 2.0 - Unit 2 MATS Compliance Report Root Data Elements
Table 2-l: Root Data Elements
2.1 Faciliry oRIS Code 6165
2.2 Faciliry Name Hunter
2.3 Facili8 Reeistrv Identifier (ORISPL)8069
2.4 Title 40 Part 63
2.5 Aoolicable Suboart TruUUU
2.6 Calendar Year 2024
2.7 Calendar Ouarter 4s Ouarter
2.8 Submission Comment (ootional)See cover letter
Section 3.0 - Unit 2 Performance Stack Test Summary
For applicable elements of Appendix E Section 3.1-3.14, see stack testing reports submitted for the
quarter. Stack testing data is being provided in both .xml and .pdf formats.
Section 4.0 - Operating Limit Data (PM, CPMS, only)
No PM CPMS on unit. Section not applicable.
Section 5.0 - Unit 2 Performance Test Run Data
For applicable elements of Appendix E Section 5. I -5.8, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 6.0 - Unit 2 Conversion Parameters
For applicable elements of Appendix E Section 6.1-6.3, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 7 .0 - Unit 2 Quality Assurance Parameters
For applicable elements of Appendix E Section 7.1-7.3, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 8.0 - Averaging Group
Unit is not part of an averaging group.
Section 9.0 - Unit 2 Compliance Averages
Please see Attachment A-l which includes 30-boiler-operating-day average data for sulfur dioxide.
Section 10.0 - Unit 2 Information
Section I 1.0 - Unit 2 Fuel Usage Information
Table 11-
Table 10-l: Unit Information
Section Data Element Plant Data
l0.l Unit ID Unit 2
t0.2
Date of Last Tune-up; Burner
Insoection Mav 26. 2023 : March I 0. 2023
10.3 Emergency Bypass Information.No emergencv bvoass occurred durins ouarter
1 Fuel Information
Month #2 Fuel Oil Burned (gallons)Sub-'Bituminous Coal Burned (tons)
October 1,759 76,854
November 6,880 75,244
December 9,559 69,820
Total 18,198 221,918
Note: No new fuel types were combusted during the reporting period.
Section 12.0 and 13.0 - tJnit 2 Malfunction, Deviations, and Monitoring
Downtime Information
Table l2-1 Monitoring Equipment Manufacturer and Model number
Pollutant Manufacturer Model Number
Sulfur Dioxide Thermo 43iQ
Carbon Dioxide
(COz)'Thermo 41OiQ
Table l2-2: Most Recent CMS Certification or Audit
U2 CEMS Analyzer Latest RATA Date Latest Linearity Date
Carbon Dioxide (COz)t0/1612024 t0/22/2024
Sulfur Dioxide (SOz)t0/1612024 10/22t2024
Table l2-3: Unit Operating Time During the Reporting Period
U2 Operating Period Hours of Unit Operation
3'd Quarter,2024 2,1 90
Table 12-4: Excess Emission Summary
I The COz analyzer is used as a diluent for calculating heat input based emission limits
5
U2 Excess Emissions
Summary
PM SOz Irg
Total Hours of Exceedance 0 0 0
Exceedance percent of total
operating hours 0.0 0.0%0.0
Hours during startup and
shutdown 0 0 0
Hours during control
equipment problems 0 0 0
Hours during process hours 0 0 0
Hours during other know
problems 0 0 0
Hours during unknown causes 0 0 0
Emission Limit 0.030 0.20 1.2
Emission Limitation Unit lb/I4MBtu lb/TvIMBtu LblTBtu
Emission limitation averaging
period
Quarterly Stack
Testing
30 boiler
operating-day
30 boiler
operating-day
Table 12-5: CMS performance summa
U2 CMS Performance Summary SOz
Downtime percent of total operating hours 0.27 Yo
Totalhour of CMS downtime 5.9
Hours due to monitoring equipment malfunctions J
Hours due to non-monitoring equipment malfunctions 0
Hours due to quality assurance/quality control calibrations 2.9
Hours due to other known causes 0
Hours due to other unknown causes 0
For applicable elements of Appendix E Sections l2.l-12.3 and 13.1-13.5, see Attachments B and C.
No deviations from rule requirements occurred other than those stated on this report and attachments.
Sections 14.0 through 30.0 - Reference Method Data
For applicable elements of Appendix E Sections 14-30, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 3l .0 - Other Information for Each Test or Test Series
In accordance with section 31.0 and to provide reporting transparency, all stack testing data
relevant to compliance with Subpart UUUUU of Part 63 is being submitted in pdf format with
this quarterly compliance report.
Responsible Official
Managing Director - Hunter Power Plant
Report Certification
uracy ofthe report:
Date: February 10.2024
r,l \', i C,
--' ' .-: Aftachments:
Attachment A: MATS 30-Day Rolling SOz lb/IvIMBtu Average Data
Attachment B: SOz Monitor Downtime Events Report
Attachment C: Excess Emissions Report
Attachment A
MATS 30-Day Rotting SO2 tb/MMBtu Average Data
MATS 30 Day Rolling Average
Plant: HUNTER PI-ANT
Repoft Period: L010t12024 Throush L213L12024
Source: UNIT2 Parameter: SO2RMATS
Date l-Day Avg 3O-Day Avg Total
OperaUng
Valid Operating
Houls
Invalad
Operating
Monator
Availability
10t112024 0.068 o.074 720 718 2 99.7o/o
10t2t2024 0.064 0.073 720 7',tg 2 99.7o/"
10t312024 0.069 0.073 720 7',tg 2 99.7o/o
10t412024 0.065 0.072 720 718 2 99.7Yo
10tst2024 o.o74 o.o72 720 718 2 99.7o/o
10t6t2024 0.072 o.072 720 718 2 99.7o/o
10t712024 0.077 o.o72 720 7'.t8 2 99-7o/"
10t812024 o.077 0.072 720 718 2 99.7%
101912024 0.078 0.072 720 718 2 99.7o/o
10t10t2024 0.08 0.073 720 718 2 99.7o/o
10t't1t2024 0.073 0.072 720 718 2 99.7o/o
10t12t2024 0.079 0.073 720 7',tB 2 99.7o/"
10t13t2024 0.078 0.072 720 7'.tg 2 99.7o/o
10t14t2024 0.076 0.073 720 7't8 2 99.7Yo
1011512024 0_067 0.072 720 718 2 99.70h
10t16t2024 0.076 0.072 720 718 2 99.7o/o
10117t2024 0.078 o.o72 720 718 2 99.7o/o
10t18t2024 0.067 0.072 720 720 0 100.0%
't011912024 0.078 0.073 720 720 0 100.0%
10t20t2024 0.071 0.073 720 720 0 100.0%
10t21t2024 0.073 0.073 720 720 0 '100.0%
10t22t2024 0.104 o.074 720 7',tg 1 99.9olo
10t23t2024 0.076 0.074 720 719 1 99.9olo
10t24t2024 o.o77 0.075 720 7',19 1 99.9%
1012512024 0.073 0.075 720 719 1 99.9%
10t26t2024 0.07 0.074 720 719 I 99.9%
10127t2024 0.075 0.074 720 719 1 99.9olo
10128t2024 0.075 o.o74 720 719 I 99.9%
10t29t2024 0.076 0.074 720 719 1 99.9%
10130t2024 0.075 0.075 720 719 1 99.9%
10t31t2024 o.074 0.075 720 719 1 99.9%
11t1t2024 o.o74 0.075 720 719 1 99.9olo
11t2t2024 0.079 0.076 720 719 1 99.9%
11t312024 0.079 0.076 720 719 1 99.9%
11t412024 0.077 0.076 720 719 1 99.9%
11t5t2024 0.081 o.o77 720 7',19 1 99.9%
11t6t2024 0.072 0.076 720 7'.tg 1 99.9%
111712024 0.073 0.076 720 719 1 99.9olo
11t$t2024 0.079 0.076 720 719 1 99.9%
11t9t2024 0.079 0.076 720 719 1 99.9%
Value = Offline Data
Valuer = Average represents a building 30D Average
Value = Exceedance Report Version 5.2
Report Generate d: O2/tO/25 O9:3O HTRDAHS04\\reportuser
Value = Offline Data
valuer = Average represents a building 30D Average
Value = Exceedance
Report Generated: 02/lO/25 09:3O
MATS 30 Day Rolling Average
Plant: HUNTER PI-ANT
Report Period: t010112024 Throush l2l3Ll?024
Source: UNIT2 Parameter: SO2RMATS
Report Version 5.2
HTRDAHS04\\reportusel
1111012024 o.o72 o.076 720 719 1 99.9%
11t11t2024 0.081 0.076 720 719 I 99.9%
11t12t2024 o.o72 0.076 720 719 1 99.9%
1111312024 0.079 0.076 720 719 1 99.9%
1111412024 0.062 0.076 720 719 1 99.9olo
11115t2024 0.061 0.075 720 719 1 99.9%
11t16t2024 0.062 0.075 720 7',tg 1 99.9%
1111712024 0.081 0.075 720 719 1 99.9%
1111812024 0.082 0.075 720 719 1 99.9%
11119t2024 0.079 0.076 720 719 1 99.9olo
11t2012024 0.o77 0_076 720 719 'l 99.9%
11t21t2024 0.086 0.075 720 720 0 't00.0%
11t22t2024 0.088 0.076 720 720 0 100.0%
11t23t2024 0.079 0.076 720 720 0 100,0%
11124t2024 0.086 0.076 720 720 0 100.0%
11t25t2024 0.068 0.076 720 720 0 100.0%
11t2612024 0.078 0.076 720 720 0 100.0%
1',U27t2024 o.o74 0.076 720 720 0 100.0olo
11t2812024 0.069 o.076 720 720 0 100.0%
1',U29t2024 0.076 0.076 720 720 0 100.0%
1',U30t2024 0.075 0.076 720 720 0 100.0%
12t1t2024 0.081 0.076 720 720 0 100.0%
12t2t2024 0.075 0.076 720 720 0 1O0.0o/o
12t312024 0.079 0.076 720 720 0 100.0%
12t412024 0.075 0.076 706 706 0 't00.0%
12,5t2024 0.073 0.076 695 695 0 100.0%
1216t2024 0.076 0.076 695 695 0 100.0%
12t7t2024 0.08 0.076 695 69s 0 't00.0%
12t8t2024 0.08 0.076 695 695 0 '100.0%
12t9t2024 0.08 0.076 695 695 0 100.0%
1211012024 0.076 0.076 695 695 0 100.0%
12t11t2024 0.078 0.076 695 695 0 100.0%
1211212024 0.083 o.o77 695 692 3 99.6olo
1211312024 0.079 0.077 695 692 3 99.6%
1211412024 0.08 o.077 695 692 3 99.6%
12t15t2024 0.083 0.078 695 692 3 99.6%
1211612024 0.081 0.079 695 692 3 99.6%
1211712024 0.079 0.079 695 691 4 99.40/
12t18t2024 0.075 0.078 695 690 5 99.3%
12t19t2024 0.074 0.078 695 690 5 99.3%
12t20t2024 0.076 0.078 695 690 5 99.3%
12t21t2024 0.069 0.078 695 690 5 99.3%
Value = Offline Data
valuer = Average represents a bulldint 30D Average
Value = Exceedance
Report Generated: 02/LO/25 09:3O
MATS 30 Day Rolling Average
Plant: HUNTER PLANT
Report Period: L010t12024 Throuqh 1213U2024
Source: UNIT2 Parameter: SO2RMATS
Report Version 5.2
HTRDAHS04\\reportuser
1222t2024 0.083 0.077 695 690 5 99.3%
1212312024 0.079 o.077 695 690 5 99.37o
't2t24t2024 0.081 0.077 695 690 5 99.3%
12t25t2024 0.073 o.o77 695 690 5 99.3%
1212612024 0.079 0.o77 695 690 5 99.3%
12t27t2024 0.078 0.078 695 690 5 99.3%
12t28t2024 0.072 0.078 695 690 5 99.30/o
12129t2024 0.083 0.078 695 690 5 99.3%
143U2024 0.081 0.078 695 690 5 99.3%
12t3112024 0.079 0.078 695 690 5 99.3%
Attachment B
SO, Monitor Downtime Events Report
Downtime Events - Duration
Plant: HUNTER PLANT
Report Period: 101012024 00:00 Through 1213'112024 23:59
Time Online Criteria: 1 minute(s)
Source: UNIT2
Parameter: SO2RMATS
lnterva!: 001H
lncident lD Slart
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Description
Action Code - Description
3
4
1012212024 O8:0O 1012212024 O8:59 0d - th - 0m 00 - Default
00 - (defauft)
1211212024 04:3,0 '1211212024 M:59 0d - th - 0m 00 - Default
00 - (default)
12t12t2024 15:'00 '1211212024 15:59 0d - th - 0m 00 - Default
00 - (default)
121212024 21:00 12i'1212O24 21:59 0d - th - 0m 00 - Defautt
00 - (default)
121712024 13:00 1211712024 13:59 0d - th - 0m 00 - Default
00 - (default)
1211812024 11:00 1211812024 '11:59 0d - th - 0m 00 - Default
00 - (default)
NumberofEvents: 6
Totrl Duration: 0d - 6h - 0m
' lndicates duration incident could have additional data prior to the start date or following the end date.
Report Generate d: 021 1 0 125 09:46 Report Version 4.0 HTRDAHS04\reporluser 1ot1
Attachment C
Excess Emissions Report
Attachment C
Unit 2 Excess Emissions Report
PM Excess Emissions
0.030 lbA4MBtu (Quarterly Stack Testing)
Total time for all excess emissions 0.0 hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No PM Excess Emissions occurred during the reporting period
No PM Malfunction occurred during the reporting period
SOz Excess Emissions
0.20 lbA{MBtu (30 Boiler Operating Day Average)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No SOz Excess Emissions occurred during the reporting period
SOz monitor equipment malfunctions noted in Attachment B.
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
Ib/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
I{g Excess Emissions
1.2 lb/TBtu (30 Boiler Operating Day Average)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No Hg Excess Emissions occurred during the reporting period
Hg monitor equipment malfunctions noted in Attachment B.
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/IlIMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
YiN Cause Corrective
Action
NI\i ISION OF AIR OUALITY
PncIFIEORP
Hunter Power Plant
MATS Quarterly Compliance Report Unit 3
40 cFR 63.10031(e)
October L, 2024 - December 37, 2024
Section I .0 - Unit 3 Report Summary
Name and address of the affbcted source
Hunter Power Plant,
1000 S. Highway l0 Castle Dale Utah
P.O. Box 569
Castle Dale, Utah 84528
Identification of eachhazardous air pollutant monitored at the affected source
I. Non-Mercury HAPS metals using a quarterly filterable particulate matter (PM) stack
test as a surrogate to demonstrate compliance. On June 6, 2018, the Utah Department
of Environmental Quality - Division of Air Quality agreed that the Hunter Plant Unit 3
met the requirements to qualifr as a low emitting EGU (LEE) unit. The Hunter Plant
submitted a summary table showing three years of quarterly test data. Each particulate
matter (PM) testing result was below one-half of the 0.030 lb/MMBtu limit, or 0.015
lb/IvIMBtu as required by the subpart.
II. Acid gases using sulfur dioxide (SOz) as a surrogate to demonstrate compliance by an
SOz continuous emissions monitoring system (CEMS).
II. Mercury (Hg), compliance demonstrated by an annual EPA Method 30B sorbent trap
test to re-confirm LEE status.
A brief description of the process unit
L Hunter Unit 3 is an Electric Utility Steam Generating Unit, designed as a dry bottom
wall-fired boiler, designed by Babcock and Wilcox.
i. Rated Heat Input Capacity of 4,910 MMBtu/hr.
ii. The unit is equipped with the following add-on controls:
l. Reverse Air Fabric Filter (baghouse)
2. Wet Lime Glue Gas Desulfurization (wet scrubber)
3. Low-NOx burner technology, with over-fire air
iii. Fuels used are sub-bituminous coal using #2 fuel oil for startup fuel when
needed.
II. Unit Category
i. Unit 3 is an existing coal-fired unit combusting non-low rank virgin coal
demonstrating compliance with the emission limits found in Table 2 to Subpart
UUWU of Part 63
IIL The emission and operating parameter limitationsi. Filterable PM quarterly stack testing demonstrating compliance with a 0.030
lbA,IMBtu emission limit. The unit has demonstrated and achieved low
emitting EGU (LEE) status.
SOz CEMS as a surogate for acid gases reporting hourly averages in units of
lb/IvIMBtu demonshating compliance with a 30 boiler-operating-day average
limit of 0.20 lb/I\'IMBtu.
Hg annual EPA Method 30B sorbent trap test reporting hourly averages in
units of lb/TBtu demonstrating compliance with a 30 boiler-operating-day
average of 1.2 lb/TBtu.
A description of any changes in CMS, processes. or controls since the last reporting
period
No changes occurred during the reporting period that would affect compliance to MATS.
Recent performance test results
ll.
lll.
Table 1-l: Unit 3 Filterable Particulate Matter LEE Test Results Summary
Test ID Test Date
Average
PM rate
(lb/mmBtu)
MATS
PM
Limit*
Average
PM
(lbllv[W-hr)
MATS
PM
Limit*
Unit Status
2024 06/20/2024 0.002 0.030 0.002 0.30
LEE
Achieved in
2018.
Maintained
with
612012024
LEE test
*Low Emitter Limits are 0.015 Ib.A,IM-BTU and 0.15 lbs./IvIW-HR
Table 1-2: Unit 3 Mercury LEE Test Results Summary
Test ID Test Date
Hg rate
(lb/TBtu)
MATS
Hg
Threshold
Unit Status
2024 tt/17/2024 0.07 0.t2
LEE Achieved.
Maintained with
1112712023 LEE test
Section 2.0 - Unit 3 MATS Compliance Report Root Data Elements
Table 2-l: Root Data Elements
2.1 Facilitv ORIS Code 6165
2.2 Facilitv Name Hunter
2.3 Facili8 Registry Identifi er (ORISPL)8069
2.4 Title 40 Part 63
2.5 Applicable Subpart UUUTru
2.6 Calendar Year 2024
2.7 Calendar Quarter 46 Ouarter
2.8 Submission Comment (ontional)See cover letter
Section 3.0 - Unit 3 Performance Stack Test Summary
For applicable elements of Appendix E Section 3 .l-3 .14, see stack testing reports submitted for the
quarter. Stack testingdata is being provided in both .xmland .pdf formats.
Section 4.0 - Operating Limit Data (PM, CPMS, only)
No PM CPMS on unit. Section not applicable.
Section 5.0 - Unit 3 Performance Test Run Data
For applicable elements of Appendix E Section 5.1-5.8, see stack testing reports submitted for the quarter.
Stack testin g data is being provided in both .xml and .pdf formats.
Section 6.0 - Unit 3 Conversion Parameters
For applicable elements of Appendix E Section 6.1-6.3, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 7 .0 - Unit 3 Quality Assurance Parameters
For applicable elements of Appendix E Section 7.1-7.3, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 8.0 - Averaging Group
Unit is not part of an averaging group.
Section 9.0 - Unit 3 Compliance Averages
Please see Attachment A-1 which includes 30-boiler-operating-day average data for sulfur dioxide.
Section 10.0 - Unit 3 Information
Section I 1.0 - Unit 3 Fuel Usage Information
Teble 11-
Teble 10-1: Unit Information
Section Data Element Plant Data
l0.l Unit ID Unit 3
10.2
Date of Last Tune-up; Burner
Tio Insoection June 24. 2024: March I 5 - 2024
10.3 Emergency Bypass Information.No emersencv bvoass occurred durins ouarter
1 Quarterly Fuel Information
Month #2 Fuel Oil Burned (gallons)Sub-Bituminous Coal Burned (tons)
October 65,934 74,015
November 68,1 l3 73,142
December 49,292 71,234
Total 183,329 218391
Note: No new fuel types were combusted during the reporting period.
:
Section 12.0 and I3.0 - Unit 3 Malfunction, Deviations, and Monitoring
Downtime Information
Table 12-l Monitoring Equipment Manufacturer and Model number
Pollutant Manufacturer Model Number
Sulfur Dioxide Thermo 43iQ
Carbon Dioxide
(COz)t Thermo 4roiQ
Table l2-2: Most Recent CMS Certification or Audit
U3 CEMS Analyzer Latest RATA Date Latest Linearity Date
Carbon Dioxide (COz)1U20t2024 1012312024
Sulfur Dioxide (SOz)tt/20/2024 t0/2312024
Table 12-3: Unit Operating Time During the Reporting Period
U3 Operating Period Houns of Unit Operation
4h Quarter,2024 2175.3
Table 12-4: Excess Emission Summary
I The COz analyzer is used as a diluent for calculating heat input based emission limits.
5
l
U3 Excess Emissions
Summary
PM SOz Hg
Total Hours of Exceedance 0 0 0
Exceedance percent of total
operating hours 0.0 0.0%0.0
Hours during startup and
shutdown 0 0 0
Hours during control
equipment problems 0 0 0
Hours during process hours 0 0 0
Hours during other know
problems 0 0 0
Hours during unknown causes 0 0 0
Emission Limit 0.030 0.20 1.2
Emission Limitation Unit lb/IvfMBtu lb/\'IMBtu LblTBtu
Emission limitation averaging
period
Quarterly Stack
Testing
30 boiler
operating-day
30 boiler
operating-day
Table 12-5: CMS performance summarT
U3 CMS Performance Summary SOu
Downtime percent of total operating hours 0.36%
Total hour of CMS downtime 7.9
Hours due to monitoring equipment malfunctions 0
Hours due to non-monitoring equipment malfunctions 0
Hours due to quality assurance/quality control calibrations 0
Hours due to other known causes 7.9
Hours due to other unknown causes 0
For applicable elements of Appendix E Sections 12.1-12.3 and l3.l-13.5, see Attachments B and C.
No deviations from rule requirements occurred other than those stated on this report and affachments.
Sections 14.0 through 30.0 - Reference Method Data
For applicable elements of Appendix E Sections 14-30, see stack testing reports submitted for the quarter.
Stack testing data is being provided in both .xml and .pdf formats.
Section 3 1.0 - O,t .. Information for Each Test or Test Series
In accordance with section 31.0 and to provide reporting transparency, all stack testing data
relevant to compliance with Subpart UUUUU of Part 63 is being submitted in pdf format with
this quarterly compliance report.
Report Certification
Responsible Offrcial
Managing Director - Hunter Power Plant
Date: Ecbnraryl0-202[
Affachments:
Attachment A: MATS 30-Day Rolling SOz lb/lvlMBtu Average Data
Attachment B: SOz Monitor Downtime Events Report
Attachment C: Excess Emissions Report
Attachment A
MATS 30-Day Rotting SO2 tb/MMBtu Average Data
Value = Offline Data
Valuer = Average represents a building 30D Average
Value = Exceedance
Report Generate d: o2 / lo I 25 09 :37
MATS 30 Day Rolling Average
PIANT: HUNTER PI.ANT
Report Period : 10 1 0U 2024 Th rouqh 12 1 3L 1 2024
Source: UNIT3 Parameter: SO2RMATS
Report Version 5.2
HTRDAHS04\\reportuser
Date 1-Day Avg 3O-Day Avg Total
Operating
Valid Operating
Hourc
Invalid
Operating
Monitor
Availability
10t1t2024 0.087 0.083 701 700 1 99.9%
10t2t2024 0.084 0.083 701 700 1 99.9%
10t3t2024 0.087 0.084 70',l,700 I 99.9%
1014t2024 0.088 0.085 701 700 1 99.9%
10t5t2024 0.087 0.085 701 700 1 99.9%
10t6t2024 0.091 0.085 701 700 1 99.9%
't0t7t2024 0.09 0.085 701 700 1 99.9%
10t8t2024 0.088 0.085 701 700 1 99.9%
't0t9t2024 0.088 0.085 701 700 1 99.9%
10110t2024 0.085 0.085 720 719 1 99.9%
10t't1t2024 0.089 0.085 720 719 1 99.9%
10t12t2024 0.082 0.085 720 719 1 99.9olo
10t13t2024 0.084 0.085 720 719 1 99.9olo
10t14t2024 0.082 0.085 720 719 1 99.9%
10t15t2024 0.082 0.085 720 719 1 99.9%
10116t2024 0.088 0.085 720 719 1 99.9%
1011712024 0.088 0.085 720 720 0 100.0%
10118t2024 0.09 0.086 720 720 0 00.0%
10t1912024 0.089 0.086 720 720 0 00.0%
10t20t2024 0.089 0.086 720 720 0 00.0%
10t21t2024 0.089 0.086 720 720 0 00.0%
10t2212024 0.089 0.086 720 720 0 00.0%
10t23t2024 0.085 0.086 720 720 0 00.0%
10t24t2024 0.089 0.086 720 720 0 00.0%
't0t25t2024 0.089 0.087 720 720 0 00.0%
1012612024 0.089 0.087 720 720 0 00.0%
10t2712024 0.089 0.087 720 720 0 100.0%
10128t2024 0.089 0.087 720 720 0 100.07o
10t29t2024 0.089 0.087 720 720 0 00.0%
1013012024 0.089 0.087 720 720 0 00.0%
10t31t2024 0.084 0.087 720 720 0 00.0%
11t1t2024 0 0.087 720 720 0 00.0%
11t2t2024 0.075 0.087 7',tz 712 0 00.0%
11t3t2024 0.086 0.087 712 712 0 100.07o
't'v4t2024 0.087 0.087 712 7',tz 0 100.0%
't1t5t2024 0.087 0_087 712 712 0 100.0olo
't1t6t2024 0.102 0.087 712 712 0 100.0%
11nt2024 0.088 0.087 712 712 0 100.0olo
't'U8t2024 0.073 0.087 712 712 0 100.0%
1',U912024 0.074 0.086 712 712 0 '100.0%
MATS 30 Day Rolling Average
Plant: HUNTER PLANT
Report Period: t010112024 Throuqh t213L12024
Source: UNIT3 Parameter: SO2RMATS
11t10t2024 0.086 0.086 712 712 0 100.0%
1111112024 0.083 0.086 712 712 0 100.0%
11t12t2024 0.088 0.086 712 710 2 99.7o/o
1'U13t2024 0.087 0.086 712 710 2 99.7%
1',U'.t4t2024 0.084 0.087 712 710 2 99.7o/"
1'U't5t2024 0.086 0.087 7'.t2 710 2 99.7o/o
11t16t2024 0.087 0.087 712 710 2 99.7o/"
11t17t2024 0.086 0.087 712 709 3 99.6%
11118t2024 0.087 0.086 712 709 3 99.6%
111',t9t2024 0.097 0.087 712 709 3 99.6%
11t20t2024 0.088 0.087 712 709 3 99.6%
't112112024 0.095 0.087 712 709 3 99.6%
1',U22t2024 0.098 0.087 712 709 3 99.6%
11t23t2024 0.094 o.088 7',t2 709 3 9S.6%
't'124t2024 0.098 0.088 712 709 3 99.6%
1112512024 0.093 0.088 712 709 3 99.6olo
11t26t2024 0.091 0.088 712 709 3 99.6%
11t27t2024 0.092 0.088 712 709 3 99.6%
11t28t2024 0.'t 1 3 0.089 712 709 3 99.6%
11129t2024 0.092 0.089 712 709 3 99.6%
11t30t2024 0.091 0.089 712 709 3 99.6%
12t1t2024 0.092 0.089 712 709 3 99.6%
12t2t2024 0.09 0.09 720 7',t7 3 99.6%
12t3t2024 0.092 0.09 720 717 3 99.6%
12t4t2024 0.102 0.091 720 714 6 99.2o/o
121512024 0.104 0.091 720 714 6 99-2o/"
12t612024 0.091 0.091 720 714 6 99.2o/o
1217t2024 0.086 0.091 720 714 6 99.20/o
1218t2024 0.089 0.091 720 714 6 99.2Yo
12t9t2024 0.102 0.092 720 7't4 6 99.2Yo
12110t2024 0.094 0.092 720 714 6 99.20h
12t11t2024 0.092 0.093 720 714 6 99.20/o
1211212024 0.096 0.093 720 716 4 99.4o/o
12,1312024 0.088 0.093 720 716 4 99.40/o
1U14t2024 0.089 0.093 720 716 4 99.4o/o
12115t2024 0.088 0.093 720 7',ts 5 99.3%
12t16t2024 0.086 0.093 720 7',ts 5 99.3%
12t17t2024 0.088 0.093 720 716 4 99.4o/o
12t18t2024 0.087 0.093 720 716 4 99.4o/o
12119t2024 0.08 0.093 720 715 5 99.3%
1212012024 0.083 o.093 720 715 5 99.3%
1U21t2024 0.089 0.092 720 715 5 99.3%
Value = Offline Data
Valuet = Average represents a building 30D Average
Value = Exceedance Report Version 5.2
Report Generated:O2/t0125 O9t3L HTRDAHS04\\reportuser
Value = Offllne Data
Valuer = Averate represents a buildlng 30D Average
Value = Exceedance
Report Generated: O2/LO/25 09:37
MATS 30 Day Rolling Average
P|ant: HUNTER PI-ANT
Repoft Period: 1010t12024 Throuqh 1213U2024
Source: UNIT3 Parameter: SO2RMATS
Report Version 5.2
HTRDAHSO4\\reportuser
11242024 0.089 0.092 720 715 5 99.3%
1423t2024 0.089 0.092 720 715 5 99.3%
12t24t2024 0.089 0_092 720 715 5 99.3%
12t2512024 0.089 0.091 720 715 5 99.3%
1426t2024 o.092 0.091 720 715 5 99.3o/o
12t27t2024 0.085 0.091 720 715 5 993%
12t2812024 0.089 0.09 720 715 5 99.370
12t2912024 0.089 0.09 720 715 5 99.3o/o
1213012024 0.089 0.09 720 715 5 99.3%
12t31t2024 0.085 0_09 720 715 5 99.3%
Attachment B
SO, Monitor Downtime Events Report
Downtime Events - Duration
Plant: HUNTER PLANT
Report Period: 1010'112024 00:00 Through 1213112024 23:59
Time Online Criteria: 'l minute(s)
Source:
Paramotor:
lntorYal:
UNIT3
SO2RMATS
001H
lncident lD Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Descrlption
Ac-tion Code - DescrioUon
1111212024 05:00 1111212024 06:59 0d - 2h - 0m 00 - Default
00 - (default)
11t1712O2422:00 1'11171202422:59 0d - th - 0m 00 - Default
_ 0g- (default)
't2lMl2O24 10:00 1210412024 12:59 0d - 3h - 0m 00 - Default
00 - (defautt)
12t15t202408:OO 1|1l1snOU6b,Sg 0d-1h-0m 00 -Default
00 - (defauh)
1211912024 08;00 1211912024 08:59 0d-1h-0m 00 -Defauh
00 - (defauft)
NumberofEvents: 5
Total Duratlon: 0d - 8h - 0m
" lndicates duration incident could have additional data prior to the start date or following the end dale.
Report Generated: 02110/25 09:46 Report Version 4.0 HTRDAHS04\reportuser 1of 1
Attachment C
Excess Emissions Report
Attachment C
Unit 3 Excess Emissions Report
PM Excess Emissions
0.030 lbA,tMBtu (Quarterly Stack Testing)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No PM Excess Emissions occurred during the reporting period
No PM Malfunction occurred during the reporting period
SOz Excess Emissions
0.20 lbA4MBtu (30 Boiler Operating Day Average)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No SOz Excess Emissions occurred during the reporting period
SOz monitor equipment malfunctions noted in Attachment B.
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Csuse Corrective
Action
Hg Excess Emissions
1.2 lb/TBtu (30 Boiler Operating Day Average)
Total time for all excess emissions 0.0 hours
Total time for excess emissions occurring during startup/shutdown or malfunction 0.0
hours
Malfunction reason and corrective /preventive action taken)
No Hg Excess Emissions occurred during the reporting period
Hg monitor equipment malfunctions noted in Attachment B.
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/IvIMBtu
Dete Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action