DSHW-2024-004792

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Clean Harbors Aragonite, LLC
I 1600 North Aptus Road
Aragonite, UT 84029
435.884.8 t00
www.cleanharbors.com
February 22,2024
Sent via email to [e-mail]
Mr. Douglas J. Hansen, Director
Division of Waste Management & Radiation Control
Department ol Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4880
RE: Notification a Thermal Relief Vent Opening
Clean Harbors Aragonite, LLC
EPA Number- UTD 981 552 177
Dear Mr. Hansen,
In accordance with condition 1.Q.9 of Clean Harbors Aragonite's (CHA) State RCRA Permit,
this conespondence serves as written notification of a thermal relief vent opening. The thermal
reliefvent opening occurred on February 22,2024.
On February 22, 2024, at approximately 4:30 AM, the facility experienced a power outage. This
caused a buildup of pressure in the system and the control board operator activated the trip
switch to open the thermal relief vent at approximately 4:33 AM. No waste was fed during the
time the thermal relief vent was open. Once power was restored, the thermal relief vent was
closed at approximately 4:54 AM. It was open for approximately 2l minutes.
CHA has notified Rocky Mountain Power of the incident and is awaiting a response on the
cause.
I certi! under penalty of law that this document and all attachments were prepared under my
direction or supervision according to a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and betief, true. accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
"People and Technologt Crealing a Better Environmenl"
USgnltarBi
Should you have any questions regarding this matter, please contact me at the number listed
below.
Sincerely
William Simmons
Facility GM III
Clean Harbors Aragonite, LLC
1 1600 North Aptus Road
PO Box 1339
Grantsville, Utah 84029-l 339
(o) 435.844.8351
(c) 870.310.6029
simmons. wi I I [e-mail]
www.cIeanharbors.com
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