DAQ-2024-004484

Yr*g.fls_gar Hunter Plant
1000 South Highway l0
P.O. Box 569
Castle Dale, UT 84513
January 22,2024
Mr. Bryce Bird, Director
Utah Deparftnent of Environmental Quality
Division of Air Quality
150 North 1950 West
P.O. Box 144820
EWIRONMENTAL QUAUTY
JAN i I ,-,11,q
DTVISION OF AIR OUALIT\I
Salt Lake City, UT 841144820
PacifiCorp Hunter Power Plant SO2 and NOx PAL Emissions Report for the Reporting
Period July 1,2023 through December3l,2023.
Dear Mr. Bryce Bird:
PursuanttoConditionll.B.l.ioftheTitleVOperatingPermit(PermitNo. 1500101004)forHunterpower
Plant, and 40 CFR Subpart 52.21(aa)(14), submission of this SO2 and NOx PAL Emissions Report is for
the period ending December 31,2023. The PacifiCorp, Hunter Power Plan! has been in compliance with
the glant-wide applicability limitation (PAL) of So2 emission limit of 5,537.5 tons per year and the pAL
of NOx emission limit of I 1,041 tons per year, based on l2-month rolling total for tire entire Hunter plant
from all point sources and fugitive emissions throughout the reporting piriod.
Permit Req uirement 11.8.1.i.3 :
Reporting:
In addition to the reporting requirement described in Provision I.S.2 of this permit, the permittee
shall comply with 40 CFR Subpart 52.21(n)(14), Reporting and notification requirements for
PALs.
As per 40 CFR Subpart 52.21(aaXl4Xil Semi-annual renort:
Item (a) - Pacificorp, Hunter power plant, Title v permit No. I 5001 0 I 004
Item (b) - see attachment titled '?acifiCorp, Ilunter Power Plant, SO2 and NOx 12 Month
Rolling Total, PAL Emissions"
Item (c) - All data used to calculate the monthly SO2 and NOx emission totals is at the facility
and available for review. SO2 and NOx 12 Month Rolling Total (MRT) emissions were
calculated uln*r,"",,
Generating Units l, z, &3- January 2023 thruDecember 2023
So2 and Nox Tons per Month (TPM) values, are the reported values to the
EPA's Acid Rain Emissions database, Provision II.B.l.i.l (a).
Units #1, #2 and #3 emergency diesel-fired generators, emissions were calculated
by multiplying the appropriate so2 and Nox emission factors from EpA Ap-42
and logged hours of operation, Provision II.B.l.i.l(b).r Units #l & #2 emergency diesel-fired fire pumps, emissions were calculated by
multiplying the appropriate so2 and Nox emission factors from EpA Ap-42 and,
logged hours of operation, Provision II.B.l.i.l(c).
REVIEWED
Initials JBR Date 2/5/2024
Comp Status Meets
File # 10237 Blue 2
Item (d) - There were no modifications or emission units added during the preceding reporting
period.
Item (e) - No deviations. During any CEMS monitoring system malfunction, SO2 and NOx
emission data were substituted in accordance with 40 CFR Part 75 requirements. Substituted
data was included in determining the 12 MRT for SO2 and NOx. See attachment titled *CEMS
Monitoring Unavailability" for a summary of the duration, cause and corrective actions.
Item (f) - There was no shutdown of any monitoring system during boiler operation during the
reporting period.
I am authorized to make this submission on behalf of the ownerc and operators of the affected
source or affected units for which the submission is made. I certify 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 individuats with primary
responsibility for obtaining the Informationr l certify that the statements and Information are to
the best of my knowledge and belief true, accurate, and complete. f 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
Manager, Hunter & Huntington Power Plants (435-748-6059).
Enclosures
Marypaz Cuessy - 310 NTO W enclosures for Units 1,2, and 3 @DF copy)
Terry Guthrie - Hunter Power Plant il enclosures for Units 1,2, and3
anaging Director - Hunter Power Plant
Responsible Offrcial
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Downtime Events - Duration
Plant: HUNTER PLANT
Report Period: 07 / 0 I / 2023 00 :00 Through 0 12 I 3 1 12023 23 : 59
Time Online Criteria: 1 minute(s)
Source: UNITI
Parameter: NOX#/HR
Interval: 00lH
Incident ID Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Description
Action Code - Description
08/08/2023 08:00 08/08/2023 08:59 0d - th - 0m Quarterly linearity testing performed.
Iniated auto calibration following linearity
09116/2023 08:00 0911612023 08:59 0d - th - 0m Statup cal failed to initiate within the 8 hour grace period
Auto starnrp calibration was initiated
09/20/2023 10:00 0912012023 20:59 0d - 1lh - 0m Startup Calibration
Iniated auto calibration following Unit Startup
09127 12023 10:00 09/27 /2023 10:59 0d - rh - 0m Pre.Rata calibration drift test was performed on one or more
imalyzers in order to verifo system accuracy.
Auto startup calibration was initiated
10/30/2023 15:00 10/3012023 15.59 0d - lh - 0m A calibration^drift test was performed on one or more analyzers in
order to verrfy system accuracy
Auto startup calibration was initiated
l l/0g/2023 0g:00 ry0g/2023 11:59 0d - 4h - 0r Maintenance of another monitor required normal sampling to ben
intemrpted.
The system was returned to service upon completion of
maintenance followed by an auto calibration.
Number ofEvents: 6
Total Duration: 0d - l9h - 0m
Source: UNITI
Parameter: SO2#/llRB
Intervrl: 00lH
Incident ID Start
Date/Time
End
Date/Time
Juration
'dd:hh:mm)
Reason Code - Description
Action Code - Descrintion
08/08/2023 08:00 08/08/2023 08:59 0d - lh - 0m Quarterly linearity testing performed.
lniated auto calibration following linearity
09/16/2023 08:00 0911612023 08:59 0d - lh - 0m Statup cal failed to initiate within the 8 hour grace period
Auto startup calibration was initiated
0912012023 10:00 0912012023 20:59 0d - I lh - 0m Startup Calibratron
Iniated auto calibration following Unit Startup
l0 0912712023 10:00 0912712023 10.59 0d - rh - 0m Pre-Rata calibration drift test was performed on one or more" analyzers in order to verify system accuracy.
Auto startup calibration was initiated
1l 10/3012023 15:00 r0r30r2023 15.59 0d - lh - 0m A calibration drift test was performed on one or more analyzers in
order to veflty system accuracy
Auto startup calibration was initiated
l2 r l/0g/2023 0g:00 r1r0gr2023 |:59 0d - 4h - 0m Maintenarrce of another monitor required normal sampling to be
lnterupted.
The system was retumed to service upon completion of
maintenance followed bv an auto calibration.
Number of Events:
Total Duration:0d-l9h-0m
Source: Unit2
Parameter: NOX#/HR
Intervrl: 00lH
Incident ID Start
)atelTime
End
Date/Time
Duration lReason Code - Description
(dd:hh:mm) lAction Code - Descriotion
l3 09lll/2023 07:00 0911112023 08:59 0d-2h-0m Maintenance of another monitor required normal sampling to be
intemrpted.
The systern was retumed to service following the maintenance.
09/25/2023 0l:OO 09125/2023 03:59 0d-3h-0m Maintenance of another monitor required normal sampling to be
intemrpted.
The system was returned to service following the maintenance.
09/27/2023 08:00 0912712023 08:59 0d- th-0m Statup cal failed to initiate within the 8 hour grace period due to
the unit startup being abandoned.
Auto startup calibration was initiated when unit was returned to
service.
l6 l2ll0D023 18:00 1211012023 18:59 0d- lh-0m Statup cal failed to initiate within the 8 hour grace period due to
the unit startup being abandoned.
Auto startup calibration was initiated when unit was retumed to
service.
Number of f,vents: 4
Total Duration: 0d - 7h - 0m
Source: UNIT2
Parameter: SO2#/HRB
lnterval: 00lH
Incident ID Start
Date/Time
End
Date/Time
)uratron
'dd:hh:mm)
Reason Code - Description
Action Code - Description
0911112023 05:00 09lrl/2023 08:59 0d-4h-0m The SO2 monitor readings locked up. The monitor was reset (powered
down and then powered backup.)
The system was refurned to service following the maintenance
and an auto cal.
09/2s12023 0l:00 0912512023 03:59 0d-3h-0m Maintenance of another monitor required normal sampling to be
intemrpted.
The system was returned to service following the maintenance.
l9 0912712023 08:00 0912712023 08:59 0d-lh-0m Statup ca! failed to initiate within the 8 hour grace period due to
the unit startup being abandoned.
Auto startup calibration was initiated when unit was returned to
service.
20 1211012023 18:00 1211012023 18:59 0d-lh-0m Statup cal failed to initiate within the 8 hour grace period due to
the unit startup being abandoned.
Auto startup calibration was initiated when unit was retumed to
service.
Number ofEvents: 4
Total Duration: 0d - th - 0m
Source: UNIT3
Parameter: NOX#/HR
Intervrl: 00lH
Incident ID Start
Date/Time
End
DatelTime
Duration
(dd:hh mm)
Reason Code - Description
Action Code - Description
2l 07/1912023 13:00 0711912023 13:59 0d - lh - 0m Startup Calibration
Auto startup calibration was initiated when unit was returned to
service.
22 10108/2023 rz.,00 10/08/2023 13:59 0d - 2h - 0m Statup cal failed to initiate within the 8 hour grace period due to
the unit startup being abandoned.
Auto startup calibration was initiated when unit was returned to
service.
23 1112712023 08:00 l'112712023 19:59 0d - l2h - 0m The monitor failed its daily/starnrp calibration.
The monitor was recalibrated and returned to service.
24 1113012023 1300 1113012023 13:59 0d - th - 0m Rodded probe, cleaned or replaced ceramic filter,
followed by auto calibration. No adjustments made to analyzers.
26 r2r05r2023 09:00 r2r05r2023 09:59 0d - th - 0m The monitor exhibited excessive drift critical orifices were
cleaned and/or replaced .
25 1210412023 10:00 12/0412023 ll:59 0d - 2h - 0m Rodded probe, cleaned or replaced ceramic filter.
followed by auto calibration. No adjustrnents made to analyzers.
A manual and/or auto calibration was initiated and upon
successful completion the monitor was retumed to service.
A manual and/or auto calibration was initiated and upon
successful completion the monitor was retumed to service.
27 12106/2023 09:00 12/0612023 rr:59 0d - 3h - 0m The monitor exhibited excessive drift Eductor block was
replaced .
28 12112/2023 05:00 12112/2023 10:59 0d - 6h - 0m The monitor failed its daily/startup calibration.
The monitor was recalibrated and returned to service.
29 l2ll2/2023 12:00 1211212023 14:59 0d - 3h - 0m Roddedprobe, cleaned orreplaced ceramic filter,
followed by auto calibration. No adjustments made to analyzers.
Number ofEvents: 9
Total Duration: ld - 7h - 0m
Source: UNIT3
Parameter: SO2#/HRB
Intervrl: 00lH
Incident ID Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Description
Action Code - Description
30 0711912023 13:00 0711912023 13:59 0d - lh - 0m Startup Calibration
Auto startup calibration was initiated when unit was retumed to
service.
3l r0t0gr20z3 12.00 r0t08t2023 13:59 0d - 2h - 0m statup cal failed to initiate within the 8 hour grace period due to
the unit startup being abandoned.
Auto startup calibration was initiated when unit was returned to
service.
32 llD7D023 05:00 1112712023 19:59 0d - l5h - 0m The monitor failed its daily/starhrp calibration.
The monitor was recalibrated and rehrmed to service.
33 1113012023 13:00 1113012023 13:59 0d - lh - 0m Rodded probe, cleaned or replaced ceramic filter,
followed by auto calibration. No adjustnents made to analyzers.
35 r2r05t2023 09:00 r2t05t2023 09:59 0d - lh - 0m The monitor exhibited excessive drift' critical orifices were
cleaned and/or replaced .
34 1210412023 10:00 12104/2023 ll:59 0d - 2h - 0m Rodded probe, cleaned or replaced ceramic filter,
followed by auto calibration. No adjustrnents made to analyzers.
A manual and/or auto calibration was initiated and upon
successfrrl completion the monitor was retumed to service.
A manual and/or auto calibration was initiated and upon
successfrrl completion the monitor was retumed to service.
36 r2t06r2023 og:oo r2t06t2023 n:59 0d - 3h - 0m The monitor exhibited excessive drift' Eductor block was
replaced.
37 1211212023 05:00 12/12/2023 10:59 0d - 6h - 0m The monitor failed its daily/startup calibration
The monitor was recalibrated and returned to service.
UTAH DEPARTMENT OF
ENVIRONMENTAL OUAUTY
.iAl,l 2 ii 2024
DIVISION OF AIR QUALITY