DAQ-2025-001214

Huntington Power Plant
8 miles west of Huntington, Utah on Hwy 3l
P.O. Box 680
Huntington, Utah 84528
February 20,2025
Mr. Bryce Bird, Director
Utah Department of Environmental Quality
Division of Air Quality
195 North 1950 West
P.O. Box 144820
Salt Lake City, UT 84114-4820
RE: Outage Notification, Unit 1 , Huntington Power Plant (Title V Permit #1501001005)
Dear Mr. Bird:
As required by ll.B.1.f.3c of the Huntington Plant Title V operating permit, the purpose of this letter is to inform you of
a maintenance outage at the Huntington Plant. Boiler Unit 1 was taken offline at 12;45 AM on Monday, February 1 7,
2024,1o make boiler tube leak repairs. The maintenance was complete, and the unit was back online with the
completion of start-up parameters achieved at 1:39 PM on Thursday, February 20,2025.
Please see the attached Maintenance Outage Report for details.
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 certifo 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 believe 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.
For further information on this outage contact Terry Guthrie, Hunter & Huntington Plant Environmental Manager,
at 435-748-6059.
Sincerely,
UTAH DEPARTMENT OF
ENVIBONMENTAL OUruTY
FtB ?'a, 2,125
Dii/1$i911 OF AIR QUALIT{
Managing Director, Hunter and Huntington Plants
Responsible Official
Laren Huntsman
REVIEWED
Initials JBR Date 7/8/2024
Comp Status Meets
File # 10238 Blue 2
outage 2/16-20/25 unit 1
Enclosures: U1 Maintenance Outage Report - PacifiCorp, Huntington Plantcc: Terry Guthrie - Environmental Manager, Hunter and Huntington Plants
Scarlet Lewis - Environmental Services - NTO 210
Russ \A/illson - Huntington Plant Files Mendosures
Mrhtenrnoc mr$ Roport,
Hunihgl,on nrnt BollcrUnft#1 SfofiOrtryp-
T[bc Leck Dr0e ?,nTntLS
m Thc Dcocrldon
2n7D02s 12:45 AM BFO Down-time
begins
2n7t2025 l2:45 AM Stopped producing electricity
2D0n025 l:02AM BFI Strrt-up b4inr
2nonas 4:16AM Started producing electricity
znoD025 5:25 AM <10% heat input from fuel oil
2n0na1 6:37 AM 3 coal mills in service
2D012V25 l:39 PM Stable operation (<10% heat input from oil, 3 coal mills in senrice, baghouse temps
>200 degroes)Strrt up cndr
BFO - Boiler Fire Out
BFI - Boiler Fire In
AII times shown are in Mountain Standard Time.
Boiler Operating Hours -
UNIT #
Outage Sta( Date:
Outage End Date:
Outage Description:
Start Date Start Time (BFl)End Date End Time (BFO)
Boiler Opr. Hrs.
Duration (hrs) Dailv Total
2t17t2025
212012025
0.75
22.95
23.7
0:00
1:02
2t17t2025
2t20t202s
0:45
23:59
0.75
22.95
Total
UTAH DEPARTMENT OF
ENVIRONMENTAL OUALITY
F EB ?. ?",2\
DI\IIS|ON OF AIR QUALIT{