DAQ-2025-001419

SilverEagle
REFINING
\'1ll st-J\tAlN4l.lt I \l ttVt(:l
March 4,2025
Bryce Bird, Director
Utah Department of Environmental Quality
Division of Air Quality
P.O. Box 144820
Salt Lake city, Utah 84114-4820
Re: 2025 Sulfur Recovery Unit (SRU) Efficiency Testing
Dear Mr. Bird:
Enclosed are the February 2025 efficiency test results for Silver Eagle Refining-Woods Cross
Inc.'s NASH Sulfur Recovery Unit. Efficiency testing was conducted in accordance with the
protocol submitted to the State on January 23,2025, and as described in Silver Eagle Refining's
Approval Order DAQE-ANI01240030-16 (dated Nov. 9, 2016), Condition II.B.4. The Sulfur
removal efficiency was 100%. This is above the requiredgl% removal efficiency.
The attached test results were collected February 24 through February 26,2025.
If you have any questions about the enclosed information please contact me. Thank you.
Sincerely,6Q--W
Blaine Zwahl&t,P.E.
for Silver Eagle Refining-Woods Cross Inc.
Cc James Shupe
Josh Sorenson
Gigi Camarena
ENVIRONMENTAL QUALITY
DIVISION OFAIR QUALIW
2355 South 1100 West . Woods Cross, Utah 84087
REVIEWEDInitials:Date: Mar 11, 2025Compliance status: In ComplianceFile #: 10124 (B2)
Test Dates:
Date
2t24t2025
2t24t2025
2t252.025
2t25t2025
2t2612025
2t2612025
H2S Removal
Efficiency, %
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
Time
13:00
15:20
10:30
14:05
15:15
13:45
Silver Eagle Refining - Woods Cross, lnc.
NASH Sulfur Recovery Unit Efficiency Test - February 2025
H2S, ppm
ln
2,000
3,000
2,000
3,000
2,500
3,000
Out
0
0
0
0
0
0
Average 100.00%
H2S Removal Effciency N = rrcO
lnlet RAE Tube P/N: 10-10340, range 0.1 -2.0%
lnlet Hone1nrvellTube P/N: 10-103-30, range 100-2000 ppmv
Outlet Honeywell Tube P/N: 10-103-04, range 0.2 - 3 ppmv
MAR - 1 2025
DIVISION OF AIR OUALITY
SRU Efficiency Calculated in Accordance with AO DAQE-AN101240030-16 (dated Nov. 9, 2016), Condition ll.B.4