HomeMy WebLinkAboutDAQ-2024-004540Yr*sflsgRP Hunter Plant
1000 South Highway l0
P.O. Box 569
Cqstle Dale, UT 84513
January 24,2024
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
UTAH DEPARTMEI\IT OF
ETURONMENTAL OUAI.JTY
FEB - 1 2024
DIVISION OF AIR QUAUTY
RE: Semiannual Compliance Report 40 CFR 63 SubPart UUUUU,
Hunter Power Plant (Iitle V Permit #1500101004)
Dear Mr. Bird:
Hunter Power Plant's Title V Permit Conditions II.B.2j.3 and II.B.3.h.3 requires the Hunter
Plant submit Compliance Reports according to the requiranents of 40 CFR $63.10031(b). This
submittal is intended to satisff that requirement.
I am authorizedto make this submission on behalf of the owners and operators of the affected
source or affected units for which the submission is made. I certiff under penalty of law that I
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 certify that the statements and information are to
the best of my knowledge and belief true, 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,
Envi Manager, Hunter & Huntington Power Plants at @35) 748-6059 or me at (435)
Managing Director Hunter & Huntington Power Plants
Responsible Official
Enclosures: Mercury and Air Toxics Semiannual Compliance Report with attacbments 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: Marypaz Cuessy - 310 NTO
Terry Guthrie - Hunter Power Plant
REVIEWED
Initials JBR Date 2/7/2024
Comp Status Meets
File # 10237 Blue 2
percent cems addressed in
170 reports
ffirroepeRTMENT oF
ENVIRONMENTAL
DIVISION OF AIR QUALITY
FrB - 1 2A24
Mercury and Air Toxics Semi-Annual Compliance
Hunter Power Plant Unit I
Reporting Period July 1, 2023,to December 31,2023
$63.100031(c)
The compliance report must contain the information required in paragraphs (cXl) through (9) of this
section.
$63.10031(cXl)
The information required by the summary report located in 63.10(e)(3)(vi).
I. See Attachment A Summary Report-Gaseous Excess Emission and Continuous Monitoring
System Perforrnance
$63.10031(c)(2)
The total fuel use by each affected source subject to an emission limit, for each calendar month within
the semiannual reporting period, including, but not limited to, a description of the fuel, whether the
fuel has received a non-waste detennination by EPA or your basis for concluding that the fuel is not a
waste, and the total fuel usage amount with units of measure.
Month #2 Fuel Oil Burned (sallons)Bituminous Coal Burned (tons)
Julv 0 89,424
August 0 83,664
September 39,958 50,583
October 0 84,983
November 15,807 48,467
December 19,498 44,363
Total 12,544 69.914
Note: Fuel Oil burned is a product ofrefineries and the coal burned is a product ofcoal
mines therefore all fuel bumed was not a waste product.
$63.10031(c)(3)
Indicate whether you burned new types of fuel during the reporting period. If you did burn new
tlpes of fuel you must include the date of the performance test where that fuel was in use.
I. No new types of fuel were burned during the reporting period.
$63.10031(c)(a)
Include the date of the most recent tune-up for each EGU. The date of the tune-up is the date the
tune-up provisions specified in $ 63.10021(e)(6) and (7) were completed.
I. The most recent boiler tune up was completed on June 28, 2022.T\e most recent burner
inspection was conducted in March 7,2022.
$63.10031(cXs)
Should you choose to rely on paragraph (2) ofthe definition of"startupo'in $ 63.10042 for your
EGU, for each instance of startup or shutdown you shall:
L The Unit relies on paragraph (1) of the definition of "startup."
Therefore, no startups or shutdowns in the current semi-annual reporting period are
subject to this requirement.
$63.10031(cX6)
You must report emergency bypass information annually from EGUs with LEE status.
L No emergency bypass occurred during the reporting period.
$63.1 003 1 (c)(7)
A summary of the results of the annual performance tests and documentation of any operating
limits that were reestablished during the test, if applicable. If you are conducting stack tests once
every 3 years to maintain LEE status, consistent with $ 63.10006(b), the date of each stack test
conducted during the previous 3 years, a comparison of emission level you achieved in each stack
test conducted during the previous 3 years to the 50 percent emission limit threshold required in $
63.10005(h)(l)(i), and a statement as to whether there have been any operational changes since
the last stack test that could increase emissions.
I. Unit I Annual Mercury LEE tests - summary results (lbs Hg/Tbtu)
Test Completion
Date
Mercury LEE
Threshold
Actual Test
Result
9n8t2017 0.12 0.07
10122t20t8 0.12 0.05
1012912019 0.12 0.04
12t8t2020 0.12 0.08
lll2U2021 0.12 0.01
U4t2023*0.t2 0.03
tU28l23 0.t2 0.01
* Test began 9/20/2022 but was interrupted due to emergency generator outage.
In 2018, the Hunter Plant completed a three (3) consecutive year, quarterly PM testing
period to qualiff Unit I as a PM Low Emitting EGU. Reference Method 5 was performed
in accordance with $63.10005(hXlXi) to demonstrate PM emissions were less than fifty
(50) percent of the applicable emission limit, 0.030lbA4MBtu. The corresponding
threshold for a LEE unit (50% of the applicable emission limit) is 0.015 lb/IVIMBtu.The
test results show an average PM emission rate over the 3-year period of 0.005 lb/MMBtu,
which qualifies Unit I as a LEE. The performance test was repeated every three years as
required demonstrating continued LEE status as indicated by test results below
A summary report of the test results for the three (3) year period is listed below:
Hunter I PM LEE Test Summary
Test ID Test Date Average PM
0b/mmBtu)
LEE Threshold
02 2015 5lt9l20ts 0.006
0.0l5lb/mmBtu
03 201s 8/8/2015 0.007
04 20rs tt/17/2015 0.014
oT 2016 2lt6l20r6 0.005
022016 612U20t6 0.004
03 2016 8n6t2016 0.005
o,42016 tUt4/2016 0.004
ot 2017 2/2t/2017 0.006
022017 s/r6/2017 0.002
03 2017 8/15/20t7 0.004
[.
o,42017 lllt4l20r7 0.003
01 2018 218t2018 0.001
36-month Averase 0.005
$63.10031(c)(8)
A certification.
I. A signed certification by a Responsible Official is included in the cover letter of this
submittal.
$63.10031(c)(e)
If you have a deviation from any emission limit, work practice standard, or operating limit, you
must also submit a brief description of the deviation, the duration of the deviation, emissions
point identification, and the cause of the deviation.
I. Any Deviations to emissions limits are identified in Auachment C Excess
Emission Report
I Any Deviations to monitoring system malfunctions, monitoring system out-of
control periods, or repairs associated with monitoring system malfunctions or
monitoring system out-of-control periods are identified in Attachment B CEMS
Monitor Outage Reportm. There are no operating limits associated with compliance to the Mercury and Air
Toxics Standards for this Unit.fV. There were no deviations related to the Work Practice Standard related to Boiler
Tune Up requirements.
V. CMS were in service during all phases of operation including starfup according
to the required Work Practice Standard except for periods identified in
Attachment B CEMS Monitor Outage Report.VI. Clean fuel was burned during each startup as required by the Work Practice
Standard.
$63.10031(cXl0)
If you had any process or control equipment malfunction(s) during the reporting period, you must
include the number, duration, and a brief description for each tlpe of malfunction which occurred
during the semiannual reporting period which caused or may have caused any applicable
emission limitation to be exceeded.
I. Malfunctions during the reporting period are identified in Attachment C Excess
Emissions Report
$63.10031(d)
Excess emissions and deviation reporting. For EGUs whose owners or operators rely on a CMS to
comply with an emissions or operating limit, the semiannual compliance reports described in
paragraph (c) of this section must include the excess emissions and monitor downtime summary
report described in 40 CFR 63.10(e)(3)(vi). However, starting with the first calendar quarter of
2024, reporting of the information under 40 CFR 63.10(e)(3)(vi) (and under paragraph (e)(3)(v),
if the applicable excess emissions and/or monitor downtime threshold is exceeded) is
discontinued for all CMS, and you must, instead, include in the quarterly compliance reports
described in paragraph (g) of this section the applicable data elements in section 13 of appendix E
to this subpart for any "deviation" (as defined in 40 CFR 63.10042 and elsewhere in this subpart)
that occurred during the calendar quarter. If there were no deviations, you must include a
statement to that effect in the quarterly compliance report.
$63.10(eX3Xv)
All excess emissions and monitoring system perforrnance reports and all summary
reports, if required, shall be delivered or postmarked by the 30th day following the end of
each calendar half or quarter, as appropriate. Written reports of excess emissions or
exceedances of process or control system parameters shall include all the information
required in paragraphs (cX5) through (c)(13) ofthis section, in 963.8(c)(7) and
$63.8(c)(8), and in the relevant standard, and they shall contain the name, title, and
signature of the responsible official who is certiffing the accuracy of the report. When no
excess emissions or exceedances of a parameter have occurred, or a CMS has not been
inoperative, out of control, repaired, or adjusted, such information shall be stated in the
report.
$63.10(cXs)
The date and time identifuing each period during which the CMS was inoperative
except for zero (lowJevel) and high-level checks;
I. CEMS monitor unavailability can be found in Attachment B CEMS
Monitor Outage Report.
$63.10(c)(6)
The date and time identiffing each period during which the CMS was out of
control, as defined in 963.8(c)(7);
I. CEMS out of control periods can be found in Attachment B CEMS
Monitor Outage Report.
$63.10(cX7)
The specific identification (i.e., the date and time of commencement and
completion) of each period of excess emissions and parameter monitoring
exceedances, as defined in the relevant standard(s), that occurs during startups,
shutdowns, and malfunctions of the affected source;
I. Excess emissions and monitor exceedances that occurred during startups,
shutdowns, and malfunctions can be found in Attachment C Excess
Emissions Report.
$63.10(c)(8)
The specific identification (i.e., the date and time of commencement and
completion) of each time period of excess emissions and parameter monitoring
exceedances, as defined in the relevant standard(s), that occurs during periods
other than startups, shutdowns, and malfunctions of the affected source;
I. Excess emissions and monitor exceedances that occurred during period
other than startups, shutdowns, and malfunctions can be found ia
Attachment C Excess Emissions Report.
$63.10(c)(10)
The nature and cause of any malfunction (if known);
I. Malfunctions nature and causes can be found in the Attachment C Excess
Emission Report.
963.10(cX11)
The corrective action taken or preventive measures adopted;
I. The corrective actions taken, or preventive measures adopted as a result
of malfunctions can be found in Attachment C Excess Emission Report.
$63.10(cX12)
The nature of the repairs or adjustments to the CMS that was inoperative or out
of control;
I. The nature of repairs or adjustments to CMS is found in Attachment B
CEMS Monitor Outage Report.
$63.10(c)(13)
The total process operating time during the reporting period;
I. Total process operating time during reporting period can be found in
section (H) of Attachment A Summary Report-Gaseous Excess
Emission and Continuous Monitoring System Performance.
$63.10031(e)
Each affected source that has obtained a Title V operating pemrit pursuant to part 70 or partTl of
this chapter must report all deviations as defined in this subpart in the semiannual monitoring
report required by 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iiixA). If an affected source
submits a compliance report pursuant to Table 8 to this subpart along with, or as part of the
semiannual monitoring report required by 40 CFR 70.6(aX3Xiii)(A) or 40 CFR 71.6(a)(3)(iii)(A),
and the compliance report includes all required information concerning deviations from any
emission limit, operating limit, or work practice requirement in this subpart, submission of the
compliance report satisfies any obligation to report the same deviations in the semiannual
monitoring report. Submission of a compliance report does not otherwise affect any obligation the
affected source may have to report deviations from permit requirements to the perrnit authority.
Any Deviations to emissions limits are identified in Attachment C Excess
Emission Report
Any Deviations to monitoring system malfunctions, monitoring system out of
control periods, or repairs associated with monitoring system malfunctions or
monitoring system out-of-control periods are identified in Attachment B GEMS
Monitor Outage Report
I.
II.
m. There are no operating limits associated with compliance to the Mercury and Air
Toxics Standards for this Unit.[V. There were no deviations related to the Work Practice Standard related to Boiler
Tune Up requirements.
V. CMS were in service during all phases of operation including startup according
to the required Work Practice Standard except for periods identified in
Attachment B CEMS Monitor Outage Report.VI. Clean fuel was bumed during each startup as required by the Work Practice
Standard.
$63.10(e) (3) (vi)
Summary Report-Gaseous Excess Emission and Continuous Monitoring
System Performance
Summary Report
(A) The company name and address of the affected source;
I. Hunter Power Plant, 1000 S. Highway l0 Castle Dale Utah, P.O. Box 569 Castle Dale,
Utah 84513
(B) An identification of each hazardous air pollutant monitored at the affected source;
I. Non-Mercury HAPS metal using a quarterly Filterable particulate matter (PM) stack test
as a surrogate to demonstrated compliance. On April 6, 2018, the Utah Division of Air
Quality agreed that Hunter Unit I met the requirements to qualiS as a PM Low Emitting
EGU (LEE) unit. The Hunter Plant had submitted a summary table showing three years'
worth of quarterly test data. Each particulate matter (PM) testing result was below one-
half of the 0.030 lbA4MBtu limit or 0.015 lbA4MBtu as required by the subpart.
IL Subsequent LEE PM testing was conducted in Ql, 2023 demonstrating continued
conformance with LEE PM status as noted in the compliance report.
III. Acid Gases using Sulfur dioxide (SOz) as a surrogate to demonstrated by a SOz
continuous emission monitor system (CEMS)
IV. Mercury (Hg), compliance demonshated by annual EPA Method 30B. State of Utah
granted Low Emitting Electrical Generating Unit (LEE) effective November 3,2016.
(C) The beginning and ending dates of the reporting period;
I. This report covers the reporting period from July 1,2023, to December 31,2023.
(D) A brief description of the process units;
Attachment A
Unit I is an Electric Utility Steam Generating Unit, designed as a dry bottom tangentially-
fired boiler, designed by Combustion Engineering.
Rated Heat Input Capacity (mmBtu/hr) of 4,750 MMBtU/hr.
The unit is equipped with the following add-on controls
a. Pulse Jet Fabric Filter (baghouse)
b. Wet Lime Flue Gas Desulfurization (wet scrubber)
c. Low NOx bumer technology, w/Closed-coupled overfired air
Fuels used are bituminous coal using #2 fuel oil for startup fuel when needed.
I.
II.
III.
IV.
(E) The emission and operating parameter limitations specified in the relevant standard(s);
I. Taken from Table 2 to Subpart UUUUU of Part 63 - Emission Limits
Unit I is an existing unit in the coal-fired unit not low rank virgin coal subcategory
demonstrating compliance with the following emission limits:
i. Filterable particulate matter (PM) quarterly stack testing demonstrating compliance
with 3.0E-2 lb/MMBtu (0.030 lb/IvIMBtu) emission limit. On April 6,2018, the
Utah Division of Air Quality agreed that Hunter Unit 1 met the requirements to
qualify as a PM Low Emitting EGU (LEE) unit. The Hunter Plant had submiffed a
summary table showing three years worth of quarterly test data. Each particulate
matter (PM) testing result was below one-half of the 0.030 lbA4MBtu limit or 0.015
lb/TVIMBtu as required by the subpart.
ii. Subsequent LEE PM testing was conducted in QI,2023 demonstrating continued
conformance with LEE PM status as noted in the compliance report.
iii. Sulfur dioxide (SO) continuous emission monitor system (CEMS) reporting hourly
averages in units of lb/mmBtu, as a surrogate for acid gases demonstrating
compliance with a 30 boiler operating day average of 2.0E-l lb./MMBtu (0.20
lb./mmBtu).
iv. Annual EPA Method 30B result of 0.050 lb/TBtu demonstrates compliance with the
Mercury (Hg) 30 boiler operating day average of l.2E0lb./TBtu (l.2lb./TBtu).
(F) The monitoring equipment manufacturer(s) and model number(s);
Pollutant Manufacture Model Number
Sulfur Dioxide (SOz)Thermo 43tO
Carbon Dioxide (COz)Thermo 410ro
Note: CO2 analyzer used as a diluent monitor for calculating Heat Input Based Emission Limits
(G) The date of the latest CMS certification or audit;
CEMS Analvzer Latest RATA Date Latest Linearity Date
Sulfur Dioxide (SOz)t0/19/2023 t0/12/23
Carbon Dioxide (COz)t0/19t2023 L0lL2/23
Note: The SO2 and COzanalyzers were certified for reporting under the Acid Rain Program prior
to the initial compliance date of April 16,2015. The Hg analyzer initial certification was on August
21,2014.
(H) The total operating time of the affected source during the reporting period;
Operatins Period Hours of Unit Ooeration
7 I I 12023 to 9 /30 /2023. 3'd Ouarter 2.040.25
10/112023 to 1213112023. 4fr Ouarter 2.206.90
Total Operatins time from 71112023 to 1213112023 4.247.15
An emission data summary (or similar summary if the owner or operator monitors control system
parameters), including the total duration of excess emissions during the reporting period (recorded
in minutes for opacity and hours for gases), the total duration of excess emissions expressed as a
percent of the total source operating time during that reporting period, and a breakdown of the total
duration of excess emissions during the reporting period into those that are due to
startup/shutdown, control equipment problems, process problems, other known causes, and other
unknown causes;
(D
Excess Emissions Summary PM SOz He
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 durine orocess hours 0 0 0
Hours during other know
nroblems 0 0 0
Hours during unknown causes 0 0 0
Emission Limit 0.030 0.20 1.2
2
Emission Limitation Unit IbA4MBfu lb/MMBtu LblTBtu
Emission limitation averaging
neriod
Quarterly Stack
Testins
30 boiler operating
dav
30 boiler
oDeratins dav
(J)A CMS perfonnance summary (or similar summary if the owner or operator monitors control
system parameters), including the total CMS downtime during the reporting period (recorded in
minutes for opacity and hours for gases), the total duration of CMS downtime expressed as a
percent of the total source operating time during that reporting period, and a breakdown of the total
CMS downtime during the reporting period into periods that are due to monitoring equipment
malfunctions, non-monitoring equipment malfunctions, quality assurance/quality control
calibrations, other known causes, and other unknown causes;
CMS Performance Summary SOz
Downtime percent of total operating hours 0.42
Total hour of CMS downtime l8
Hours due to monitoring equipment malfunctions 0
Hours due to non-monitorins eouioment malfunctions 0
Hours due to oualitv assurance/qualitv control calibrations 7
Hours due to other known causes ll
Hours due to other unknown causes 0
(K) A description of any changes in CMS, processes, or controls since the last reporting period;
There no changes dwing the reporting period.
(L) The title, and si of the responsible official who is certiffing the accuracy of the
Laren K Huntsman
Responsible Official
Managing Director - Hunter Power Plant
(M) The date of th
Date:
Attachment B
CEMS Monitor Outage Report
Sulfur Dioxide (SO2) System Monitor Outage (lb/IttMBtu) - Hunter Unit I
Report Period: July 1,2023 Through December 31,2023
lource:Hunter Unit I Perameter:t02
'lb/MMBtu)Intervel: l00lH
ncident
D
Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)Cause
Data ooc
(YN)
Monitoring
System
Deviation Corrective Action
'I 08/08/2023 08:00 08/08/2023 08:59 0d-lh-0m
QA/QC N N Quarterly Linearity testing performed. Initiated
auto calibration was initiated.
2 09/2012023 10:00 09D0D02320:59 0d-llh-0m
QA/@ N N Startup Calibration. Initiated auto calibration
following unit startup.
09D7D023 r0:N 09D712023 10:59 0d- lh-0m
QA/QC N N
Pre RATA calibration drift test was preformed
on one or more analyzers in order to veri!
system accuracy. Auto cal was initiated.
10130D023 15:00 1013012023 15:59 0d- lh-0m
QAi@ N N
Calibraton drift test was preformed on one or
more analyzers in order to veri! system
accuracy. Auto startup cal was initiated.
I l/08/2023 08:00 lll08D023 ll:59 0d-4h-0m
QA/QC N N
Maintenance of another monitor required normal
sampling to be intemrpted. The system was
retumed to service upon completion of
maintenance followed by an auto calibration.
Number ofEvents: 5
Totel Duretion: 0d - l8h - 0m
Attachment C
Excess Emissions Report
Unit I
PM Excess Emissions
0.030 lbAdMBtu (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,IMBtu (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 SOz Excess Emissions occurred during the reporting period
No SOz Malfunction occurred during the reporting period
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/]VlMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
Hg Bxcess 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
No Hg Malfunction occurred during the reporting period
Excess
Emisslon
Incldent
Number
Magnitude
of Excess
Emissions
lb/IIMBtu
Date Time
Beginning
Tlme
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
DIVISION OF AIR QI]ALITY
ffi
Mercury and Air Toxics Semi-Annual Compliance Report
Hunter Power Plant Unit 2
Reporting Period July 1, 2023 to December 31,2023
FLB -'1 ?024
DIVISION OF AIR OUALITY
$63.100031(c)
The compliance report must contain the information required in paragraphs (c)(l) through (5) of this
section.
$63.10031(c)(1)
The information required by the summary report located in 63.10(e)(3xvi).
I. See Attachment A Summary Report--Gaseous Excess Emission and Continuous Monitoring
System Performance
$63.10031(c)(2)
The total fuel use by each affected source subject to an emission limit, for each calendar month within
the semiannual reporting period, including, but not limited to, a description of the fuel, whether the
fuel has received a non-waste determination by EPA or your basis for concluding that the fuel is not a
waste, and the total fuel usage amount with units of measure.
Month #2 Fuel Oil Burned (gallons)Bituminous Coal Burned (tons)
Julv 0 89,424
Ausust 13,457 83,664
Septernber 0 50,583
October 0 84,983
November 12.680 48,467
Dece,rnber 54,926 44.363
Total 81,063 401,484
Note: Fuel Oil burned is a product of refineries and the coal burned is a product of coal
mines therefore all fuel bumed was not a waste product.
$63.10031(cX3)
Indicate whether you bumed new types of fuel during the reporting period. If you did bum new
types of fuel you must include the date of the perfonnance test where that fuel was in use.
I. No new types of fuel were bumed during the reporting period.
$63.10031(c)(a)
Include the date of the most recent tune-up for each EGU. The date of the tune-up is the date the
tune-up provisions specified in $ 63.10021(e)(6) and (7) were completed.
I. The most recent boiler tune up was completed May 26,2023. The most recent burner
inspection was conducted on March 10,2023.
$63.10031(cX5)
Should you choose to rely on paragraph (2) of the definition of "startup" in $ 63.10042 for your
EGU, for each instance of startup or shutdown you shall:
I. The Unit relies on paragraph (1) of the definition of "startup."
Therefore, no startups or shutdowns in the current semi-annual reporting period are
subject to this requirement.
$63.10031(cX6)
You must report emergency bypass information annually from EGUs with LEE status.
L No emergency bypass occurred during the reporting period.
$63.10031(cX7)
A summary of the results of the annual perfiormance tests and documentation of any operating
limits that were reestablished during the test, if applicable. If you are conducting stack tests once
every 3 years to maintain LEE status, consistent with $ 63.10006(b), the date of each stack test
conducted during the previous 3 years, a comparison of emission level you achieved in each stack
test conducted during the previous 3 years to the 50 percent emission limit threshold required in $
63.10005(h)(l)(i), and a statement as to whether there have been any operational changes since
the last stack test that could increase emissions.
L Uilt2 Annual Mercury LEE tests - summary results (lbs Hg/Tbtu)
Test Completion
Date
Mercury LEE
Threshold
Actual Test
Result
t2lt4l20I6 0.12 0.01
t2t4t20t7 0.12 0.01
t2l4120t8 0.12 0.03
tzl3l2019 0.12 0.02
tzt8t2020 0.r2 0.04
1U212021 0.r2 0.01
1011612022 0.t2 0.04
1y29t2023 0.12 0.0r
In 2018, the Hunter Plant completed a three (3) consecutive year, quarterly PM testing
period to quality Unit 2 as a PM Low Emitting EGU. Reference Method 5 was performed
in accordance with $63.10005(hxlxi) to demonstrate PM emissions were less than fifty
(50) percent of the applicable emission limit, 0.030 lbA{MBtu. The corresponding
threshold for a LEE unit (50% of the applicable emission limit) is 0.015 lb/lvlMBtu.The
test results show an average PM emission rate over the 3-year period of 0.006 lb/IVIMBtu,
which qualifies Ullrlt2 as a LEE. The performance test was repeated every three years as
required demonstrating continued LEE status as indicated by test results below
A summary report of the test results for the three (3) year period is listed below:
Test ID Test Date Average PM
(lb/mmBtu)
LEE Threshold
o2201.s 5lzt/2015 0.009
0.015lb/mmBtu
03 2015 8/19120r5 0.006
04 20Is tUt8l20t5 0.009
01 2016 2/18t20t6 0.006
o.22016 5/1712016 0.006
03 2016 8/t7t2016 0.00s
o,42016 t1lt6l20t6 0.006
ot 20t7 212212017 0.007
o.22017 5lt7l20t7 0.00s
03 2017 8n6t2017 0.005
o,420t7 lllt5l20t7 0.003
u.
ol 2018 212312018 0.002
36 month Averase 0.006
$63.10031(c)(8)
A certification.
I. A signed certification by a Responsible Oflicial is included in the cover letter of this
submittal.
$63.10031(c)(e)
If you have a deviation from any emission limit, work practice standard, or operating limit, you
must also submit a brief description of the deviation, the duration of the deviation, emissions
point identification, and the cause of the deviation.
I. Any Deviations to emissions limits are identified in Attachment C Excess
Emission Report
II. Any Deviations to monitoring system malfunctions, monitoring system out-of
control periods, or repairs associated with monitoring system malfunctions or
monitoring system out-of-control periods are identified in Attachment B CEMS
Monitor Outage Report
trI. There are no operating limits associated with compliance to the Mercury and Air
Toxics Standards for this Unit.fV. There were no deviations related to the Work Practice Standard related to Boiler
Tune Up requirements.
V. CMS were in service during all phases of operation including startup according
to the required Work Practice Standard except for periods identified in
Attachment B CEMS Monitor Outage Report.VI. Clean fuel was bumed during each startup as required by the Work Practice
Standard.
$63.10031(c)(10)
If you had any process or control equipment malfunction(s) during the reporting period, you must
include the number, duration, and a brief description for each t1rye of malfunction which occurred
during the semiannual reporting period which caused or may have caused any applicable
emission limitation to be exceeded.
I. Malfunctions during the reporting period are identified in Attachment C Excess
Emissions Report
$63.1003r(d)
Excess emissions and deviation reporting. For EGUs whose owners or operators rely on a CMS to
comply with an emissions or operating limit, the semiannual compliance reports described in
paragraph (c) of this section must include the excess emissions and monitor downtime summary
report described in 40 CFR 63.10(eX3Xvi). However, starting with the first calendar quarter of
2024,reporting of the information under 40 CFR 63.10(e)(3Xvi) (and under paragraph (eX3)(v),
0311712021
if the applicable excess emissions andlor monitor downtime threshold is exceeded) is
discontinued for all CMS, and you must, instead, include in the quarterly compliance reports
described in paragraph (g) of this section the applicable data elements in section 13 of appendix E
to this subpart for any "deviation" (as defined in 40 CFR 63.10042 and elsewhere in this subpart)
that occurred during the calendar quarter. If there were no deviations, you must include a
statement to that effect in the quarterly compliance report.
$63.10(e)(3)(v)
All excess emissions and monitoring system performance reports and all summary
reports, if required, shall be delivered or posharked by the 30th day following the end of
each calendar half or quarter, as appropriate. Written reports of excess emissions or
exceedances of process or control system parameters shall include all the infonnation
required in paragraphs (c)(5) through (c)(13) of this section, in $63.8(cX7) and
$63.8(cX8), and in the relevant standard, and they shall contain the name, title, and
signature of the responsible official who is certifring the accuracy of the report. When no
excess emissions or exceedances of a parameter have occurred, or a CMS has not been
inoperative, out of control, repaired, or adjusted, such information shall be stated in the
report.
$63.10(c)(s)
The date and time identifuing each period during which the CMS was inoperative
except for zero (low-level) and high-level checks;
I. CEMS monitorunavailability can be found in Attachment B CEMS
Monitor Outage Report.
$63.10(c)(6)
The date and time identifuing each period during which the CMS was out of
control, as defined in $63.8(c)(7);
I. CEMS out of control periods can be found in Attachment B CEMS
Monitor Outage Report.
$63.10(c)(7)
The specific identification (i.e., the date and time of commencement and
completion) of each period of excess emissions and parameter monitoring
exceedances, as defined in the relevant standard(s), that occurs during startups,
shutdowns, and malfunctions of the affected source;
I. Excess emissions and monitor exceedances that occurred during startups,
shutdowns, and malfunctions can be found in Attachment C Excess
Emissions Report.
$63.10(c)(8)
The specific identification (i.e., the date and time of commencement and
completion) of each time period of excess emissions and parameter monitoring
exceedances, as defined in the relevant standard(s), that occurs during periods
other than startups, shutdowns, and malfunctions of the affected source;
I. Excess emissions and monitor exceedances that occurred during period
other than startups, shutdowns, and malfunctions can be found in
Attachment C Excess Emissions Report.
$63.10(c)(10)
The nature and cause of any malfunction (if known);
I. Malfunctions nature and causes can be found in the Attachment C Excess
Emission Report.
$63.1o(cX11)
The corrective action taken or preventive measures adopted;
I. The corrective actions taken or prevantive measures adopted as a result
of malfunctions can be found in Attachment C Excess Emission Report.
$63.10(c)(12)
The nature of the repairs or adjustments to the CMS that was inoperative or out
of control;
I. The nature of repairs or adjustments to CMS is found in Attachment B
CEMS Monitor Outage Report.
$63.10(c)(13)
The total process operating time during the reporting period;
I. Total process operating time during reporting period can be found in
section (H) of Attachment A Summary Report-Gaseous Excess
Emission and Continuous Monitoring System Perforrnance.
$63.10031(e)
Each affected source that has obtained a Title V operating permit pursuant to part 70 or partTl of
this chapter must report all deviations as defined in this subpart in the semiannual monitoring
report required by 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iii)(A). If an affected source
submits a compliance report pursuant to Table 8 to this subpart along with, or as part of, the
semiannual monitoring report required by 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iii)(A),
and the compliance report includes all required information concerning deviations from any
emission limit, operating limit, or work practice requirement in this subpart, submission of the
compliance report satisfies any obligation to report the same deviations in the semiannual
monitoring report. Submission of a compliance report does not otherwise affect any obligation the
affected source may have to report deviations from permit requirements to the permit authority.
I. Any Deviations to emissions limits are identified in Attachment C Excess
Emission Report
II. Any Deviations to monitoring system malfunctions, monitoring system out-of
control periods, or repairs associated with monitoring system malfunctions or
monitoring system out-of-control periods are identified in Attachment B CEMS
Monitor Outage Report
m. There are no operating limits associated with compliance to the Mercury and Air
Toxics Standards for this Unit.
[V. There wene no deviations related to the Work Practice Standard related to Boiler
Tune Up require,ments.
V. CMS were in service during all phasss of operation including startup according
to the required Work Practice Standard except for periods identified in
Attachment B CEMS Monitor Outage Report.
VI. Clean fuel was bumed during each startup as required by the Work Practice
Standard.
Attachment A
Summary Report-Gaseous Excess Emission and Continuous Monitoring
System Performance
$63.10(e) (3) (vi) Summary Report
(A) The company name and address of the affected source;
I. Hunter Power Plant, 1000 S. Highway l0 Castle Dale Utah, P.O. Box 569 Castle Dale,
Utah 84513
(B) An identification of each hazardous air pollutant monitored at the affected source;
I. Non-Mercury HAPS metal using a quarterly Filterable particulate matter (PM) stack test
as a surrogate to demonstated compliance. On June 6,2018, the Utah Division of Air
Qualrty agreed that Hunter Unit 2 met the requirements to qualiff as a PM Low Emitting
EGU (LEE) unit. The Hunter Plant had submitted a summary table showing three years'
worth of quarterly test data. Each particulate matter (PM) testing result was below one-
half of the 0.030 lbA{MBtu limit or 0.015 lb/ItlMBtu as required by the subpart.
II. Subsequent LEE PM testing was conducted in Ql, 2021 demonstating continued
conforrnance with LEE PM status as noted in the compliance report.
m. Acid Gases using Sulfur dioxide (SOz) as a surrogate to demonstrated by a SOz
continuous emission monitor system (CEMS)
IV. Mercury (Hg), compliance demonstrated by annual EPA Method 30B. The State of Utah
granted Low Emitting Electrical Generating Unit (LEE), effective March 14,2017
(C) The beginning and ending dates of the reporting period;
I. This report covers the reporting period from July l, 2023 to December 31, 2023 .
(D) A brief description of the process units;
I. Unit 2 is an Electric Utility Steam Generating Unit, designed as a dry bottom tangentially-
fred boiler, designed by Combustion Engineering & Wilcox.
II. Rated Heat Input Capacity (mmBtulhr) of 4,750 MMBtu/h.
m. The unit is equipped with ttre following add-on controls
a. Pulse Jet Fabric Filter (baghouse)
b. Wet Lime Flue Gas Desulfurization (wet scrubber)
,u ."",.;,"1","T1-i..T,.::ffiilf:,T ::.,ff.J-,enneeded
(E) The emission and operating parameter limitations specified in the relevant standard(s);
I. Taken from Table 2 to Subpart UUUUU of Part 63 - Emission Limits
Unit 2 is an existing unit in the coal-fired unit not low rank virgin coal subcategory
demonstrating compliance with the following emission limits:
i. Filterable particulate matter (PM) quarterly stack testing demonstrating
compliance with 3.0E-2 lbAdMBtu (0.030 lbA{MBtu) emission limit. On June
6,2018, the Utah Division of Air Quality agreed that Hunter Unit 2 met the
requirements to qualify as a PM Low Emitting EGU (LEE) unit. The Hunter
Plant had submitted a sunmary table showing three years' worth of quarterly
test data. Each particulate matter (PM) testing result was below one-half of the
0.030 lb/I\4MBtu limit or 0.015 lbAdMBtu as required by the subpart.
ii. Subsequent LEE PM testing was conducted in Ql,202l demonstrating
continued conformance with LEE PM status as noted in the compliance report.
iii. Sulfur dioxide (SOz) continuous emission monitor system (CEMS) reporting
hourly averages in units of lb.firdMBtu, as a surrogate for acid gases
demonstrating compliance with a 30 boiler operating day average of 2.0E-1
lb.A4MBtu (0.20 lb.A{MBtu).
iv. Annual EPA Method 30B result of 0.030 lb./TBtu demonstrates compliance
with the Mercury (Hg) 30 boiler operating day average of 1.2E0 lb./TBtu (1.2
lb./TBtu).
(F) The monitoring equipment manufacturer(s) and model number(s);
Note: CO2 analyzer used as a diluent monitor for calculating Heat Input Based Emission Limits
(G) The date of the latest CMS certification or audit;
CEMS Analvzer Latest RATA Date Latest Linearity Date
Sultur Dioxide (SO)08/1st2023 1011612023
Carbon Dioxide (COz)08/1512023 t0lt6/2023
Note: The SO2 and COz analyzers were certified for reporting under the Acid Rain Program prior
to the initial compliance date of April 16,2015. The Hg analyzer initial certification was on August
20,20t4.
(H) The total operating time of the affected source during the reporting period;
Operating Period Hours of Unit Operation
7 I I I 2023 ro 9 /30 I 2023, 3d Quarter 2,145.27
l0/ 1 12023 to l2l3l 12023, 4e Quarter 1,985.73
Total Operating time from7lll2023 to 12/3112023 4,131
An emission data summary (or similar sunmary if the owner or operator monitors control system
parameters), including the total duration of excess emissions during the reporting period (recorded
in minutes for opacity and hours for gases), the total duration of excess emissions expressed as a
percent of the total source operating time during that reporting period, and a breakdown of the total
duration of excess emissions during the reporting period into those that are due to
startup/shutdown, control equipment problems, process problems, other known causes, and other
unknown causes;
(r)
Pollutant Manufacture Model Number
SulturDioxide (SOz)Thermo 43rQ
Carbon Dioxide (COz)Thermo 41orQ
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 lbAdMBtu lbAdMBtu Lb/TBtu
Emission limitation averaging
oeriod
Quarterly Stack
Testins
30 boiler
oneratins dav
30 boiler
ooeratine dav
(r)A CMS performance summary (or similar summary if the owner or operator monitors control
system parameters), including the total CMS downtime during the reporting period (recorded in
minutes for opacity and hours for gases), the total duration of CMS downtime expressed as a
percent of the total soluce operating time during that reporting period, and a breakdown of the total
CMS downtime during the reporting period into periods that are due to monitoring equipment
malfunctions, non-monitoring equipment malfunctions, quality assurance/quality control
calibrations, other known causes, and other unknown causes;
CMS Performance Summary SOz
Downtime percent of total operating hours 0.22%
Total hour of CMS downtime 9
Hours due to monitoring equipment malfunctions 4
Hours due to non-monitoring equipment malfunctions 0
Hours due to quality assurance/quality control calibrations 2
Hours due to other known causes )
Hours due to other unknown causes 0
(K) A desc of any changes in CMS, processes, or controls since the last reporting period;
There changes during the reporting period.
(L) The title, and responsible official who is ceftiryiry the accuracy of the
report;
K Huntsman
Responsible Official
Managing Director - Hunter Power Plant
(M) The date of the report.
Attachment B
CEMS Monitor Outage Report
Sulfur Dioxide (SO2) System Monitor Outage (b/lvlMBtu) - Hunter Unit 2
Repott Pcriod: Jqly l, 2023 lbrough Doc€mb€r 31, M3
Source:Hunter Unit 2 Parameter:so2
:lbftIMBtu)lnterval: l00lH
Incidenl
ID
Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)Cause
Data OO(
(Y/N)
Monitoring
System
Deviation Corrective Action
I 0911112023 05:00 09lll/2023 08:59 0d-4h-0m Monitor Equipment
Malfunction N N
The SO2 monitor readings lockod up. The
monitor was reset (powered down and then
powered backup.) The system was retumed to
service following the maintenance and an auto
cal.
)0912512023 01:00 09/25/2023 03:59 0d-3h-0m Other Know Causes N N
Maintenance of another monitor required normal
sampling to be intemrpted. The system was
returned to service following the maintenance.
3 09/27DAB 08:00 0912712023 08:59 0d- th-0m QA/QC N N
Pre Rata calibration drift test was perfonned on
one or more analyzers in order to veriff systern
accuracy. Followed by an auto calibration.
4 12/1012023 18:00 12/10/2023 18:59 0d-lh-0m QA/QC Y N
Statup cal failed to initiate within the 8 hour
grace period due to the unit startup being
abandoned. Auto startup calibration was initiatec
when unit was returned to service.
Number ofEvents: 4
Total Duration: 0d - th - 0m
Attachment C
Excess Emissions Report
PM Excess Emissions
0.030 lbAdMBtu (Quarterly Stack Testing)
Total time for all excess emissions 0.0 hours
Total time for excess emissions occurring during starfup/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 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 SOz Excess Emissions occurred during the reporting period
No SOz Malfunction occurred during the reporting period
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
tb/IIMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/N Cause Corrective
Action
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lh/MMRfrr
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Y/It Cause Corrective
Action
Hg Excess Emissions
1.2 lb/TBtu (30 Boiler Operating Day Average)
Total time for aII excess emissions 0.0 hours
Total time for excess emissisrt 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
No Hg Malfunction occurred during the reporting period
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lh/MMRfu
Dete Time
Beginning
Time
Ending
Hours
Involved
Malfunction
Yit{Cause Corrective
Action
5r'@
FrB - 1 Zr:z4
p,y,sroN oF nrniir- rrv
IJI/\.H IJEPAR TMENT OF
'
! vlEQ!_llllLr3,L__Q!' AL I rY-t
i1 aaal IMercury and Air Toxics Semi-Annual Compliance Report
Hunter Power Plant Unit 3
Reporting Period July 1, 2023 to December 31,2023
i,ivlSlON OF AIR OUALITY
$63.100031(c)
The compliance report must contain the information required in paragraphs (cXl) through (5) of this
section.
$63.10031(cX1)
The inforrration required by the summary report located in 63.10(e)(3Xvi).
L See Attachment A Summary Report-Gaseous Excess Emission and Continuous Monitoring
System Perfonnance
$63.10031(c)(2)
The total fuel use by each affected source subject to an emission limit, for each calendar month within
the semiannual reporting period, including, but not limited to, a description of the fuel, whether the
fuel has received a non-waste deterrnination by EPA or your basis for concluding that the fuel is not a
waste, and the total fuel usage amount with units of measure.
Month #2 Fuel Oil Burned (eallons)Bituminous Coal Burned (tons)
July 58,803 72,030
Auzust 32,549 75,058
September 35,598 41,297
October 58.571 45,626
November 20,939 41,r99
December 27,671 34,829
Total 234,131 310,039
Note: Fuel Oil burned is a product of refineries and the coal burned is a product of coal
mines therefore all fuel bumed was not a waste product.
$63.10031(c)(3)
Indicate whether you burned new types of fuel during the reporting period. If you did burn new
types of fuel you must include the date of the performance test where that fuel was in use.
L No new types of fuel were burned during the reporting period.
$63.10031(cXa)
Include the date of the most recent tune-up for each EGU. The date of the tune-up is the date the
tune-up provisions specified in $ 63.10021(e)(6) and (7) were completed.
L The most recent boiler tune up was completed on July 30,2020. The most recent burner
inspection took place on March 15,2020.
$63.10031(c)(s)
Should you choose to rely on paragraph (2) ofthe definition of"startup" in $ 63.10042 for your
EGU, for each instance of startup or shutdown you shall:
I. The Unit relies on paragraph (l) of the definition of "startup."
Therefore, no startups or shutdowns in the current semi-annual reporting period are
subject to this requirement.
$63.10031(cX6)
You must report emergency bypass information annually from EGUs with LEE status.
I. No emergency bl,pass occurred during the reporting period.
$63.10031(c)(7)
A summary of the results of the annual performance tests and documentation of any operating
limits that were reestablished during the test, if applicable. If you are conducting stack tests once
every 3 years to maintain LEE status, consistent with $ 63.10006(b), the date of each stack test
conducted during the previous 3 years, a comparison of emission level you achieved in each stack
test conducted during the previous 3 years to the 50 percent emission limit threshold required in $
63.10005(h)(1)(i), and a statement as to whether there have been any operational changes since
the last stack test that could increase emissions.
L Unit 3 Annual Mercury LEE tests - summary results (lbs Hg/TBtu)
Test Completion
Date
Mercury LEE
Threshold
Actual Test
Result
t2/r2t2016 0.12 0.09
t2/t812017 0.12 0.07
12/r2t2018 0.12 0.09
l2lt0l20t9 0.12 0.01
tt/3012020 0.12 0.07
ty2l202t 0.12 0.03
1012412022 0.t2 0.02
ty27/2023 0.t2 0.05
In 2018, the Hunter Plant completed a three (3) consecutive year, quarterly PM testing
period to qualifu Unit 3 as a PM Low Emitting EGU. Reference Method 5 was perforrned
in accordance with $63.10005(hxlXi) to demonstrate PM emissions were less than fifty
(50) percent of the applicable emission limit,0.030lbA4MBtu. The corresponding
threshold for a LEE unit (50% of the applicable emission limit) is 0.015 lb/ItdMBtu.The
test results show an average PM emission rate over the 3-year period of 0.004 lbA4MBtu,
which qualifies Unit 3 as a LEE. The perforrnance test was repeated every three years as
required demonstrating continued LEE status as indicated by test results below
A summary report of the test results for the three (3) year period is listed below:
Test ID Test Date Average PM
(lb/mmBtu)
LEE Threshold
022015 5t20t2015 0.006
0.0l5lb/mmBtu
03 20ls 812512015 0.005
o1420ts It/1912015 0.008
01 2016 2/t7t20t6 0.004
022016 5lt8l20r6 0.004
03 2016 8lt8l20L6 0.004
o,42016 tt/17/2016 0.005
or 20t7 3tr4t20t7 0.003
0220t7 6129t2017 0.004
II.
03 2017 8n7t2017 0.003
Q42017 tyt6/20t7 0.005
01 2018 2122/2018 0.001
36 month Averase 0.004
$63.10031(c)(8)
A certification.
I. A signed certification by a Responsible Official is included in the cover letter of this
submittal.
$63.10031(c)(e)
If you have a deviation from any emission limit, work practice standard, or operating limit, you
must also submit a brief description of the deviation, the duration of the deviation, emissions
point identification, and the cause of the deviation.
I. Any Deviations to emissions limils are identified in Attachment C Excess
Emission Report
tr. Any Deviations to monitoring syste,m malfunctions, monitoring system out-of
control periods, or repairs associated with monitoring system malfunctions or
monitoring system out-of-control periods are identified in Attachment B CEMS
MonitorOutage Report
m. There are no operating limits associated with compliance to the Mercury and Air
Toxics Standards for this Unit.fV. There were no deviations related to the Work Practice Standard related to Boiler
Tune Up requirements.
V. CMS were in service during all phases of operation including startup according
to the required Work Practice Standard except for periods identified in
Attachment B CEMS Monitor Outage Report.
VI. Clean fuel was burned during each startup as required by the Work Practice
Standard.
$63.10031(c)(10)
If you had any process or control equipment malfunction(s) during the reporting period, you must
include the number, duration, and a brief description for each t1rye of malfunction which occurred
during the semiannual reporting period which caused or may have caused any applicable
emission limitation to be exceeded.
I. Malfunctions during the reporting period are identified in Attachment C Excess
Emissions Report
$63.10031(d)
Excess emissions and deviation reporting. For EGUs whose owners or operators rely on a CMS to
comply with an emissions or operating limit, the semiannual compliance reports described in
paragraph (c) of this section must include the excess emissions and monitor downtime surnmary
report described in 40 CFR 63.10(e)(3)(vi). However, starting with the first calendar quarter of
2024, reporting of the infonnation under 40 CFR 63.10(e)(3)(vi) (and under paragraph (e)(3)(v),
if the applicable excess emissions and/or monitor downtime threshold is exceeded) is
discontinued for all CMS, and you must, instead, include in the quarterly compliance reports
described in paragraph (g) of this section the applicable data elements in section 13 of appendix E
to this subpart for any "deviation" (as defined in 40 CFR 63.10042 and elsewhere in this subpart)
that occurred during the calendar quarter. If there were no deviations, you must include a
statement to that effect in the quarterly compliance report.
$63.10(e)(3)(v)
All excess emissions and monitoring system performance reports and all summary
reports, if required, shall be delivered or postmarked by the 30th day following the end of
each calendar half or quarter, as appropriate. Written reports of excess emissions or
exceedances of process or control system parameters shall include all the information
required in paragraphs (c)(5) through (c)(13) ofthis section, in $63.8(c)(7) and
$63.8(cX8), and in the relevant standard, and they shall contain the name, title, and
signature of the responsible official who is certifuing the accuracy of the report. When no
excess emissions or exceedances of a parameter have occurred, or a CMS has not been
inoperative, out of control, repaired, or adjusted, such information shall be stated in the
report.
$63.1o(cXs)
The date and time identifuing each period during which the CMS was inoperative
except for zero (lowJevel) and high-level checks;
I. CEMS monitor unavailability can be found in Attachment B CEMS
Monitor Outage Report.
$63.10(cX6)
The date and time identi$ing each period during which the CMS was out of
control, as defined in $63.8(cX7);
I. CEMS out of control periods can be found in Attachment B CEMS
Monitor Outage Report.
$63.10(cX7)
The specific identification (i.e., the date and time of commencement and
completion) of each period of excess emissions and parameter monitoring
exceedances, as defined in the relevant standard(s), that occurs during startups,
shutdowns, and malfunctions of the affected source;
I. Excess emissions and monitor exceedances that occurred during startups,
shutdowns, and malfunctions can be found in Attachment C Excess
Emissions Report.
$63.10(cX8)
The specific identification (i.e., the date and time of commencement and
completion) of each time period of excess emissions and parameter monitoring
exceedances, as defined in the relevant standard(s), that occurs during periods
other than startups, shutdowns, and malfunctions of the affected source;
I. Excess emissions and monitor exceedances that occurred during period
other than startups, shutdowns, and malfunctions can be found in
Attachment C Excess Emissions Report.
$63.10(c)(10)
The nature and cause of any malfunction (if known);
I. Malfunctions nature and causes can be found in the Attachment C Excess
Emission Report.
$63.10(c)(1 1)
The corrective action taken or preventive measures adopted;
L The corrective actions taken or preventive measures adopted as a result
of malfunctions can be found in Attachment C Excess Emission Report.
$63.1o(cXl2)
The nature of the repairs or adjustments to the CMS that was inoperative or out
of control;
I. The nature of repairs or adjustments to CMS is found in Attachment B
CEMS Monitor Outage Report.
$63.1o(cXl3)
The total process operating time during the reporting period;
I. Total process operating time during reporting period can be found in
section (H) of Attachment A Summary Report-Gaseous Excess
Emission and Continuous Monitoring System Performance.
$63.10031(e)
Each affected source that has obtained a Title V operating pemrit pursuant to part 70 or part 71 of
this chapter must report all deviations as defined in this subpart in the semiannual monitoring
report required by 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iiixA). If an affected source
submits a compliance report pursuant to Table 8 to this subpart along with, or as part of, the
semiannual monitoring report required by 40 CFR 70.6(aX3Xiii)(A) or 40 CFR 71.6(a)(3)(iii)(A),
and the compliance report includes all required information concerning deviations from any
emission limit, operating limit, or work practice requirement in this subpart, submission of the
compliance report satisfies any obligation to report the same deviations in the semiannual
monitoring report. Submission of a compliance report does not otherwise affect any obligation the
affected source may have to report deviations from permit requirements to the permit authority.
I. Any Deviations to emissions limits are identified in Attachment C Excess
Emission Report
[. Any Deviations to monitoring system malfunctions, monitoring system out-of
control periods, or repairs associated with monitoring system malfunctions or
monitoring system out-of-control periods are identified in Attachment B CEMS
Monitor Outage Report
m. There are no operating limits associated with compliance to the Mercury and Air
Toxics Standards for this Unit.
ry. There were no deviations related to the Work Practice Standard related to Boiler
Tune Up requirements.
V. CMS were in service during all phases of operation including startup according
to the required Work Practice Standard except for periods identified in
Attachment B CEMS Monitor Outage Report.
VI. Clean fuel was burned during eaeh startup as required by the Work Practice
Standard.
Attachment A
Summary Report4aseous Excess Emission and Continuous Monitoring System
Performance
$63.10(e) (3) (vi) Summary Report
(A) The company name and address of the affected source;
I. Hunter Power Plant, 1000 South Highway 10, P.O. Box 569 Castle Dale, Utah
84513
(B) An identification of each hazardous air pollutant monitored at the affected source;
I. Non-Mercury HAPS metal using a quarterly Filterable particulate matter (PM)
stack test as a surrogate to demonstrated compliance On June 6, 2018, the Utah
Division of Air Quality agreed that Hunter Unit 3 met the requirements to quali$
as a PM Low Emitting EGU (LEE) unit. The HunterPlant had submitted a
summary table showing three years' worth of quarterly test data. Each
particulate matter (PM) testing result was below one-half of the 0.030lb/IrdMBtu
limit or 0.015 lbAdMBtu as required by the subpart.
tr. Subsequent LEE PM testing was conducted in Ql, 2021 demonstrating continued
conformance with LEE PM status as noted in the compliance report.
m. Acid Gases using Sulfur dioxide (SOz) as a surrogate to demonstrated by a SOz
continuous emission monitor system (CEMS)
ry. Mercury (Hg), compliance demonstrated by annual EPA Method 30B. State of
Utah granted Low Emitting Electrical Generating Unit (LEE) effective March 15,
2017.
(C) The beginning and ending dates of the reporting period;
I. This report covers the reporting period from July 1,2023 to December 3L,2023.
(D) A brief description of the process units;
I. Unit 3 is an Electric Utility Steam Generating Unit, designed as a dry bottom
wall-fired boiler, designed by Babcok & Wilcox.
tr. Rated Heat lnput Capacity (mmBtu/hr) of 4,910 MMBtU/hr.
III. The unit is equipped with the following add-on controls
a. Reverse Air Fabric Filter (baghouse)
b. Wet Lime Flue Gas Desulfurization (wet scrubber)
rv .J,,'J;);,*::TJ""Tffi;,ffr, J.T*,, tue, when needed
(E) The emission and operating parameter limitations specified in the relevant standard(s);
L Taken from Table 2 to Subpart UUUUU of Part 63 - Emission Limits
Unit 3 is an existing unit in the coal-fired unit not low rank virgin coal
subcategory demonstrating compliance with the following emission limits:
i. Filterable particulate matter (PM) quarterly stack testing demonstrating
compliance with 3.0E-2lbA4MBtu (0.030 lbAdMBtu) emission limit.
On June 6,2018, the Utah Division of Air Qualrty agreed that Hunter
Unit 3 met the requirements to qualifo as a PM Low Emitting EGU
(LEE) unit. The Hunter Plant had submitted a summary table showing
three years' worth of quarterly test data. Each particulate matter (PM)
testing result was below one-half of the 0.030 lb/lvlMBtu limit or 0.015
lb/lvlMBtu as required by the subpart.
ii. Subsequent LEE PM testing was conducted in QI,2021 demonstrating
continued confonnance with LEE PM status as noted in the compliance
report.
iii. Sulfur dioxide (SOz) continuous emission monitor system (CEMS)
reporting hourly averages in units of lb/mmBtu, as a surrogate for acid
gases demonstrating compliance with a 30 boiler operating day average
of 2.0E-1 lb.AdMBtu (0.20 lb./mmBtu).
iv. Annual EPA Method 30B result of 0.090 lb/TBtu demonstrates
compliance with the Mercury (Hg) 30 boiler operating day average of
1.2E0 lb./TBtu (1.2 lb./TBtu).
(F) The monitoring equipment manufacture(s) and model number(s);
Note: CO2 analyzer used as a diluent monitor for calculating Heat lnput Based Emission
Limits
(G) The date of the latest CMS certification or audit;
Note: The SO2 and CO2analyzers were certified for reporting under the Acid Rain
Program prior to the initial compliance date of April16,2015. The Hg analyzer initial
certification was on August 20,2014.
(H) The total operating time of the affected source during the reporting period;
An emission data summary (or similar srunmary if the owner or operator monitors control
system parameters), including the total duration of excess emissions during the reporting
period (recorded in minutes for opacity and hours for gases), the total duration of excess
emissions expressed as a percent of the total source operating time during that reporting
period, and a breakdown of the total duration of excess emissions during the reporting
period into those that are due to startupishutdown, control equipment problems, process
problems, other known causes, and other unknown causes;
Excess Emissions Sum PM S0z
(r)
Pollutant Manufacture Model Number
Sulfi.r Dioxide (SOz)Therrno 43rQ
Carbon Dioxide (COz)Therrno 4l0ro
CEMS Analyzer Latest RATA Date Latest Lineari8 Date
Sulfur Dioxide (SOz)t0/2s12023 r011012023
Carbon Dioxide (COz)r0/2s12023 t0lt0/2023
Operatins Period Ilours of Unit Oneration
71112023 to 913012023, 3d Quarter 1,999.5
l0lll2023 to 1213112023, 4fr Quarter 2,023.6
Total Operating time from7l1l2023 to 1213112023 4,023.1
Total Hours of Exceedance 0 0 0
Exceedance percent of total operating
hours 0.0 0.0 0.0
Hours durins startuo and shutdown 0 0 0
Hours during control equipment
oroblems 0 0 0
Hours durins orocess hours 0 0 0
Hours durins other know problems 0 0 0
Hours durins unknown causes 0 0 0
Em ssion Limit 0.030 0.20 1.2
Em ssion Limitation Unit lb/\,IMBtu lb/IVIMBtu LblTBtu
Quarterly
Stack
Testins
30 boiler
operating day
30 boiler
operating day
(J)A CMS performance summary (or similar summary if the owner or operator monitors
control system parameters), including the total CMS downtime during the reporting period
(recorded in minutes for opacity and hours for gases), the total duration of CMS downtime
expressed as a percent of the total source operating time during that reporting period, and
a breakdown of the total CMS downtime during the reporting period into periods that are
due to monitoring equipment malfunctions, non-monitoring equipment malfunctions,
quality assurance/quality control calibrations, other known causes, and other unknown
causes;
CMS Performance Summary SOz
Downtime percent of total operating hours 0.85
Total hour of CMS downtime 34
Hours due to monitoring equipment malfunctions 17
Hours due to non-monitoring equipment malfunctions 0
Hours due to quality assurance/quality control calibrations
Hours due to other known causes t6
Hours due to other unknown causes 0
(K) A description of any changes in CMS, processes, or controls since the last reporting
period;
uring the reporting period.
gnature responsible official who is certifring the accuracy of
K Huntsman
Responsible Official
Managing Director - Hunter Power Plant
(M)
(N)
The date
Date:
Attachment B
CEMS Monitor Or(age Report
Sulfir Dioxide (SO2) System Monitor Outage (lb/MMBtu) - Hmter Unit 3
Report Penod: July 1.2023 Through December3l,2023
Source;Hmter Unrt 3 Parameter:s02
/lh/MMRr',\ntenal: l00lH
Incidenl
ID
Start
Date/Tim€
End
Date/Time
Duration
(dd:hh:mm)Cause
)ata OO(
(Y,N)
Monitoring
System
Deviation Conective Action
01/t912023 13.OC o7/19t2023 t7 59 0d-lh-0m QA/QC Y N
itartup Calibration, Auto startup calibration was
inrlrated when unit wo renrmed to seryrce
2 lOlOBl2O23 l2:OC lO/O8/2023 13:59 0d-2h-Om Other Knom Causes Y N
Statup cal failed to initiate within the 8 hour
grace period due to the unit startup being
abmdoned. Auto Startuo calibration was
inrtrated when unrt was retumed to setu!ce
3 t1t27/2023 05.OO 1\/2'712023 O7:59 0d-3h-0m Monitor Equipment
Malfunction Y N
The monitor failed its daily/startup calibration
The monitor was recalibrated md retumed to
seryice
4 t1/21/2023 08.O0 1t/2'112023 1.59 0d-4h-0m Monitor Equipment
Malfunction Y N
The monitor failed its daily/startup calibration
The monitor was recalibrated ild retumed to
seruice.
5 t1/2't/2023 l2 00 ll/2712023 14.59 0d-3h-0m Other Know Causes N N
The monitor failed its daily/sta(up calibration
The monitor was recalibnted and retumed to
seNlce
6 lt/2712023 15.00 tl127/2023 t9.59 0d-5h-0m Other KnoM Causes N N
The monitor failed its daily/startup calibration
The monitor was recalibrated md retumed to
service
7 I I 11012023 13 00 11/30/2021 13 59 Od-1h-0m Other KnoM Causes N N
Rodded probe, cleaned or replaced cermic
filter, followed by auto calibration. No
adjustrnents made to malyzers.
I 12t04/2023 10.00 12/0412023 IL59 0d-2h-Om Other Knom Causes N N
Rodded probe, clemed or replaced cermic
filter, followed by auto calibration. No
adjustrnents made to malyzers.
9 12/05/2023 09 00 12/0512023 09.59 Od-lh-Om Monitor Equipment
Malfunction N N
The monitor exhibited excessive drift. Critical
orifices were clemed md/or replaced . A
Mmul md/or auto cal was initiated md upon
successful completion the monitor was retmed
to sgNice.
t0 12/06/2023 09.OO 12/06/2023 ll:59 0d-3h-Om Monitor Equipment
Malfuction N N
The monitor exhibited excessive drift. Eductor
block was replaced . A Mmual md/or auto cal
was initiated md upon successful completion
the monitor was retmed to servrce
il t2/12t2023 05 00 l2ll2/2O23 1O:59 0d-6h-0m Monitor Equipment
Malfimction N
The monitor failed its dally/startup calibration
The monitor was recalibrated md retumed to
serylce
12 t2/12/2023 12 00 t2/12/2023 14.59 0d-3h-Om Other Knom Causes N N
Rodded probe, cleaned or replaced cermic
irlter, followed by auto calibration. No
adjustments made to analyzers.
Number ofEvents: 12
Totel Durrtion: ld- l0h - Om
Attachment C
Excess Emissions Report
PM Excess Emissions
0.030 lbAdMBtu (Quarterly Stack Testing)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction
QQhours
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 lbAdMBtu (30 Boiler Operating Day Average)
Total time for all excess emissions QQ hours
Total time for excess emissions occurring during startup/shutdown or malfunction
0.0hours
Malfunction reason and corrective /preventive action taken)
No SOz Excess Emissions occurred during the reporting period
No SOz Malfunction occurred during the reporting period
Excess
Emission
Incident
Number
Magnitude
of Excess
Emissions
lb/IIMBtu
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
Excess
Emission
Incident
Number
Magnitude
of Excess
Emisslons
lb/MMBtu
Date Time
Beginning
Time
Ending
Hours
Involved
Malfunction
YAI Cause Corrective
Action
Hg Excess Emissions
1.2IblTBtu (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 occured during the reporting period
No Hg Malfunction occurred during the reporting period
UTAH DEPARTMENT OF
ENVIRONMENTAL OUALITY
FEB - 1 2024
DIVISION OF AIR QUALITY