DAQ-2025-000514

1

DAQC-084-25
Site ID 10238 (B5)
MEMORANDUM

TO: CEM FILE – PACIFICORP HUNTINGTON PLANT

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: January 23, 2025

SUBJECT: Source: Huntington Power Plant Units 1 and 2
Contact: Russ Wilson – 435-687-4331
Terry Guthrie – 435-687-4334
Location: Huntington Canyon, Emery County, UT
Test Contractor: Montrose Air Quality Services, LLC
FRS ID#: UT0000004901501001
Permit/AO#: Title V operating permit #1501001006, dated November 21, 2024
Last revised November 21, 2024
Subject: Review of RA/PST Protocol dated January 9, 2025
On January 16, 2025, Utah Division of Air Quality (DAQ) received a protocol for a RA/PST (relative
accuracy/performance specification test) of the Pacificorp Huntington Plant Units 1 and 2 in Huntington,
Utah. Testing will be performed on March 4-5, 2025, to determine the relative accuracy of the O2, CO2,
NOX, SO2, and CO monitoring systems.

PROTOCOL CONDITIONS:

1. RM 1 used to determine sample velocity traverses: OK
2. RM 2G/H 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. RM 4 used to determine moisture content: OK
5. RM 6C used to determine SO2 emissions: OK
6. RM 7E used to determine NOX concentrations of emissions: OK
7. RM 10 used to determine CO concentrations of emissions: OK
8. RM 19 used to determine volumetric flow: OK

DEVIATIONS: No deviations were noted.

CONCLUSION: The protocol appears to be acceptable.

RECOMMENDATION: Send attached protocol review and test date confirmation notice.

1 8 2