DAQ-2024-004483

Yr*grfls"gaP Hunter Plant
1000 South Highway l0
P.O. Box 569
Castle Dale, UT 84513
January 22,2024
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Mr. Bryce Bird, Director
Utah Departrnent of Environmental Quality ,l ii
Division of Air Quality
150 North 1950 West
P.O. Box 144820
Salt Lake City, UT 84114-4820 DIVISION OF AIR QUALITY
PaciliCorp Ilunter Power Plant - Units 1, 2, & 3 NOx Regional Haze, State Implementation Plan - Semi-
annual Report for period starting July 1, 2023, ending December 31,2023. (Title V Permit
#1s00101004)
Dear Mr. Bryce Bird:
Pursuant to the record submittal requirements in 40 CFR Subpart 52.21(agQQ and conditions outlined in Title V
Operating Pennit 1500101004, this Regional Haze, State Implementation Plan semi-annual report is hereby
submitted by the Hunter Power Plant. This report covers the period from July I , 2023 thru Decemb er 3l , 2023 .
During this time period, the Hunter Plant has been in compliance with the annual NOx emissions limits of I1,041
tons/year on a l2 month rolling total from all point and fugitive emission sources.
40 CFR Suboart 52.21(aaX14) Semi-annual report:
(a) PacifiCorp, Hunter Power Plant, Title V Permit No. 150101004
(b) See enclosed sheet entitled "PaciJiCorp - Hunter Power Plant - RH SIP 12 Month Rolling Total
Emissions - Tons Per Year"
(c) All data used to calculate the monthly NOx emission totals are at the facility and available for review.
NOx twelve month rolling total emissions were calculated using:
o Units 1,2,& 3 mainboilerstacks-January 1,2023 thruDecember3l,2023.NOxtonsper
month values are the values reported to the EPA's Acid Rain Emissions database (permit
condition II.B. 1.g. l(a).
o Units 1,2, & 3 emergency diesel-fired generators and the I and 2 emergency fre pump
engine emissions were calculated by multiplying the appropriate NOx emission factors from
EPA's AP -42 and logged hours of operation (permit condition II.B. I .g. I (b).
(d) No emission units (that would affect the RH SIP) were added or modified during the reporting period.
(e) See enclosed sheet entitled "PacifiCorp - Hunter Plant CEMS devistions and malfunctions". The
monitor deviations or malfunctions (excluding time associated with zero and span calibration checks)
are listed. Consequently, there were infrequent NOx emission data that were required to be substituted
in accordance with 40 CFR Part 75 requirements.
REVIEWED
Initials JBR Date
2/5/2024
Comp Status Meets
File # 10237 Blue 2
(f) There were no shutdowns of any applicable monitoring system during boiler operation during the
reporting period.
This letter is the signed statement and certification of the report by the responsible offrcial.
I am authorized to make this submission on behalf of the olvners 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 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 signilicant 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 Gutbrie Environmental Manager-
Hunter &Power Plants (43 5 -7 48-6059).
Enclosures:
PacifiCorp - Hunter Power Plant - RH SIP 12 Month NOx Rolling Total Emissions - Tons Per Year
PacifiCorp - Hunter Plant CEMS deviations qnd malfunctions
cc: Terry Guthrie - Hunter and Huntington Plants Environmental Manager, denclosures
Josh Sewell - NTO, ilenclosures
Marypaz Cuessy - NTO, denclosures
Jay Howard - Hunter Plant Files, denclosures
Managing Director - Hunter & Huntington Power Plants
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Downtime Events - Duration
Plant: HUNTER PLANT
Report Period: 07 /01/2023 00:00 Through 01213112023 23:59
Time Online Criteria: I 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
I 08/08/2023 08:00 08/08/2023 08:59 0d - lh - 0m Quarterly linearity testing performed.
Iniated auto calibration following linearity
2 0911612023 08:,00 0911612023 08:59 0d - lh - 0m Statup cal failed to initiate within the 8 hour grace period
Auto startup calibration was initiated
3 09120/2023 10:00 0912012023 20:59 0d - I lh - 0m Starrup Calibration
Iniated auto calibration following Unit Startup
4 09127/2023 10:00 0912712023 10:,59 0d - lh - 0m Pre Rata calibration drift test was performed on one or more
analyzers in order to veri$ system accuracy.
Auto startup calibration was initiated
10/3012023 15:00 1013012023 15:59 0d - lh - 0m A calibration drift test was performed on one or more analyzers in
order to veriff system accuracy
Auto startup calibration was initiated
6 I l/0812023 08:00 1110812023 ll:59 0d - 4h - 0m Maintenance of another monitor required normal sampling to be
interrupted.
The system was refumed to service upon completion of
maintenance followed bv an auto calibration.
Number of Events: 6
Total Duration: 0d - l9h - 0m
Source: UNIT2
Parameter: NOX#/HR
Interval: 00lH
lncident ID Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Description
Action Code - Descriotion
7 Ogltt/2023 07:00 0911U2023 08:59 0d - 2h - 0m #'*T,I*
of another monitor required normal sampling to be
The system was retumed to service following the maintenance.
8 0 9t25t2023 0t:00 09t25t2023 03:59 0d - 3h - 0m ffiflT,il:"
of another monitor required normal sampling to be
The system was retumed to service following the maintenance.
9 0 912712023 08:00 0912712023 08:59 0d - rh - 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.
r0 12/10/2023 rE:00 r2/ro/2023 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 Events: 4
Total Duration: 0d - 7h - 0m
Source: LNIT3
Parameter: NOX#/HR
Interval: 00lH
Incident ID Start
Date/Time
End
Date/Time
Duration
(dd:hh:mm)
Reason Code - Description
Action Code - Descriotion
l1 0711912023 13:00 0711912023 13:59 0d - lh - 0m Startup Calibration
Auto startup calibration was initiated when unit was retumed to
service.
t)
r0/0gr2023 12:00 ror0gr2oz3 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 retumed to
service.
l 3 11 127 12023 08.00 11127 12023 19:59 0d - l 2h - 0m The monitor failed its daily/startup calibration.
The monitor was recalibrated and retumed to service.
14 ll/30/2023 13:00 1113012023 13'59 0d - lh - 0m Rodded probe, cleaned or replaced ceramic filter,
followed by auto calibration. No adjustments made to analyzers.
15 12/04/2023 10:00 1210412023 ll:59 0d - 2h - 0m Rodded probe, cleaned or replaced ceramic filter,
followed by auto calibration. No adjustments made to analyzers.
16 Dfi5t2023 09:00 12105/2023 09:59 0d - lh - 0m *ffiffiL"t'#excessive
drift' critical orifices were
.tHHifr#,:ffi ;1':ffilH'"T*1T;1r,l"
17 Dfi6/2023 09'00 12106/2023 rr:59 0d - 3h - 0m The monitor exhibited excessive drift' Eductor block was replaced
A manual and/or auto calibration was initiated and upon successful
completion the monitor was retumed to service.
l8 12/1212023 05:00 1211212023 10:59 0d - 6h - 0m The moniror failed its daily/startup calibration.
The monitor was recalibrated and retumed to service.
19 1211212023 12:00 12/1212023 14l.59 0d - 3h - 0m Rodded probe, cleaned or replaced ceramic filter,
followed by auto calibration. No adjustments made to analyzers.
Number of Events: 9
Total Duration: ld - 7h - 0m
UTAH DEPARTMEi.jT OF
ENVltlO N IyIENTAL QUALITY
'-_!i
i]!JI:,;ON OF AIR OUALITY