DAQ-2025-001318

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DAQC-180-25
Site ID 12929 (B4)

MEMORANDUM

TO: STACK TEST FILE – WAPITI OPERATING, LLC – Sage Brush Flats
Compressor Station

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Paul Morris, Environmental Scientist

DATE: February 14, 2025

SUBJECT: Source: Caterpillar G3608TALE Compressor Engine Units #1, #2, and #3
Location: Junction Cottonwood and Nine Mile Canyon roads, Carbon County, UT
Contact: Randy Jorgenson, 435-621-1888 or 435-214-4029
Tester: Great Plains Analytical Services, Katie Lackey 580-225-0403
FRS ID #: UT0000004900700101
Permit #: 500101002, last revised on June 14, 2019
Subject: Review of Pretest Protocol dated February 7, 2025
On February 11, 2025, Utah Division of Air Quality (DAQ) received a protocol for the testing of
compressor engine Units #1, #2, and #3 located at the Sage Brush Flats Compressor Station in remote
Carbon County, Utah. Testing will be performed during the week of March 10, 2025, to determine
compliance with the CO, NOX, and VOC emission limits found in Permit Conditions II.B.3.a, and NSPS
40 CFR 60, Subpart JJJJ.

PROTOCOL CONDITIONS:

1. RM 1 used to determine sample velocity traverses: OK
2. RM 2 used to determine stack gas velocity and volumetric flow rate: OK
3. RM 3A used to determine dry molecular weight of the gas stream: OK
4. ASTM D6348-03 used to quantify gas phase concentrations of NOx emissions: OK
5. ASTM D6348-03 used to quantify gas phase concentrations of CO emissions: OK
6. ASTM D6348-03 used to quantify gas phase concentrations of VOC emissions: OK
7. ASTM D6348-03 used to quantify gas phase concentrations of CH2O emissions: OK

DEVIATIONS: No deviations noted.

CONCLUSION: The protocol appears to be acceptable.

RECOMMENDATION: Send protocol review and test date confirmation notice.

ATTACHMENTS: Stack testing protocol for engine Units #1-#3 dated February 7, 2025

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