DAQ-2025-002882

\PecrnConp
Huntington Power Plant
8 miles west of Huntington, Utah on Hwy. 3l
P.O. Box 680
Huntington, Utah 84528
May 19,2025
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 841144820
RE: Outage Notification, Unit 1, Huntington Power Plant (Title V Permit #1501001006)
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 1:43 AM on
Friday, May 16, 2025,1o boiler circulation pump repairs. The maintenance was complete, and the unit
was back online with the completion of start-up parameters achieved at 2:35 AM on Sunday, May 18,
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 certify under penalty of law that I have personally
examined, and am familiar with, the statements and information submifted in this document and all its
attachments. Based on my inquiry of those individuals with primary responsibili$ 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 a fine or
imprisonment.
For further information on this outage contact Terry Guthrie, Hunter & Huntington Plant Environmental
Manager, at 435-748-6059.
Sincerely
Huntsman
ing Director, Hunter and Huntington Plants
Designated Authority
REVIEWED
Initials JBR Date 6/11/2025
Comp Status: Meets
File # 10238 Blue 2
unit 1
Maintenance Outage Report,
Huntington Plant Boiler Unit #1
Itftaint Outage -
Boiler Circulation
Pumo Reoairs
Date: Yt5n025
Date Time Descriotion
v$n025 ll:41PM Unit I load lowerod in anticip*ion ofthe ouago.Shut"dowl
bcglnr
s/r6/2025 l:43 AM BFO Dom-time
begins
5/16t2025 l:28 AM Stopped producing electricity
5n7/2025 6:14 PM BFI Start-up begins-
str7D025 9:26PM Started producing electricity
sl17t2025 l0:23 PM <10% heat input from fuel oil
5n8t2025 12:36 AM 3 coal mills in service
sn8/202s 2:35 AM Stable operation (<10% heat input from oil, 3 coal mills in service, baghouse temps
>200 degrees)Start-up ends
BFO - Boiler Fire Out
BFI - Boiler Fire In
All times shown are in Mountain Standard Time.
- Y A: I -r "illTi,./rt:iii u-i-ENVIRONMENTAL QUALITY
DiVJSiON OF AIR QI-IA! ITY
Boiler Operating Hours -
UNIT #
Outage Start Date:
Outage End Date:
Outage Description:
Start Date Start Time (BFl)End Date End Time (BFO)
Boiler Opr. Hrs.
Duration (hrs) Daily Total
5t16t2025
5l't712025
0:00
18:14
5t16t2025
511712025
0:43
23:59
0.72
5.75
6.5
0.72
5.75
Total