DAQ-2024-008578

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UTAH DEPARTMENT OF
ENVIRONMENTAL OUAUTY
DEC 1 2 2A)?-
DIVISION OF AIR QUALTTY
2.
aJ.
To: Executive Secretary, Utah Air Quality Board
From: Holcim - US, Utelite Plant
RE: Deviation Report For Permit No. 4300001003
Date: 1210112022
In accordance with Operating Permit Provision I.S.2.b, Utah Administrative Code (UAC)
R307-415-6a(3XcXii) the following report is submiued:
1. List the date the deviation occurred: 1113012022
Permit conditions for which deviation occurred: II.B.3.b
Describe the deviation that occurred: At approximately 11:00am emissions
greater than l0 percent opacity were emitted from the Number 3 stack. This
condition existed for approximately 5 minutes.
Describe the probable cause of the deviation: As a result of extreme low temperatures
and high humidity, there was excessive moisture built up in the compressed air system. It
froze in the air lines and the loss of air pressure to the bypass gates caused them to
activate.
Describe any corrective actions or preventive measures taken: The kiln was shut
down until the problem could be identified. The cause was determined to be frozen air
lines. The air lines were heated to clear the blockage. The kiln was then restarted and
returned to normal operation. The kiln operators have been instructed to open air valves
periodically at different points in the system to purge moisture from the air lines to
prevent a build up of moisture that may freeze and cause a repeat of the problem.
ln accordance with Operating Permit provision I.K and UAC R307-415-5d, and based on
information and belief formed after reasonable inquiry, I certify that the statements and
information in this document are true,, and complete.
- 7D - ZP?'tt''
'of a Responsible Offrcial
4.
5.
Jdffery Barrick, General Manager
Date
REVIEWEDInitials: Date: June 12, 2024Compliance Status: OK File #:10676 (B2) Comment: Should have been reviewedat time of the July 21, 2023, inspection.