DAQ-2024-004490

Huntington Power Plant
8 miles west of Huntington, Utah on Hwy. 3l
P.O. Box 680
Huntington, Utah 84528
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UTAH DEPARTMENT OF
ENVIRONMENTAL OI'AUTY
JAN 2 6 ?424
DIVISION OF AIR QUALITYJanuary 22,2024
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
RE:PacifiCorp, Huntington Power Plant - Units 1 & 2 NOx Regional Haze, State lmplementation
Plan - Semi-annual Report for period ending December 31,2023. (Title V Permit
#1501001005)
Dear Mr. Bird:
Pursuant to the record submittal requirements in 40 CFR Subpart52.21(aa)(14) and conditions outlined in
Title V Operating Permit 1501001005, this RegionalHaze, State lmplementation Plan semi-annual report
is hereby submitted by the Huntington Power Plant. This report covers the period from July 1,2023
through December 31,2023. During this period, the Huntington Plant has been in compliance with the
annual NOx emissions limits of 6,604 tons/year on a 12 month rolling total basis from all point and fugitive
emission sources.
40 GFR Subpart 52.21(aal(l4) Semi-annual report:
(a) PacifiCorp, Huntington Power Plant, Title V Permit No. 1501001005
(b) See enclosed sheet entitled " PacifiCorp - Huntington Power Plant - RH S/P 12 Month Rolling
Total Emissrbns - Tons Per Yeaf'
(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 main boiler stacks - July 1, 2023 through Dec 31 , 2023. NOx tons per
month values are the values reported to the EPA's Acid Rain Emissions database
(permit condition ll.B. 1.9. 1 (a).
o Units 1 & 2 emergency diesel-fired generators and the emergency fire pump engine
emissions were calculated by multiplying the appropriate NOx emission factors from
EPA's AP42 and logged hours of operation (permit condition 11.8.1.9.1(b).
REVIEWED
Initials JBR Date 2/6/2024
Comp Status Meets
File # 10238 Blue 2
limits below allowed.
. Research Farm Pump Engine emissions were calculated by multiplying the
appropriate NOx Tier lV emission factors and logged hours of operation (permit
condition ll.B. 1.9. 1 (c).
No emission units (that would affect the RH SIP) were added or modified during the reporting
period.
See enclosed sheet titled "PacifiCorp - Huntington Plant CEMS deviations 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.
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 official.
I am authorized to make this submission on behalf of the owners 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 signiflcant 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, Hunter and
Huntington Power Plant Environmental Manager at (435) 6874334 or me at (435) 6874211.
(d)
(e)
(f)
(g)
Sin""r.lVf
,? VN
U4r"-- ( ,' . Laren Huntsman
t/Managing Director Hunter and Huntington Plants
Responsible Official
Enclosures:
PacifiCorp - Huntington Power Plant - RH SlP, 12 Month NOx Rolling Total Emissions - Ions
Per Year
PacifiCorp - Huntington Plant CEMS deviations and malfunctions
cc: Terry Guthrie - Hunter and Huntington Plants Environmental Manager, Menclosures
Scarlet Jackson - NTO, Wenclosures
Russ Wllson - Huntington Plant Files, w/enclosures
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