DAQ-2024-007997

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DAQC-437-24
Site ID 14234 (B4)
MEMORANDUM

TO: STACK TEST FILE – GENEVA ROCK PRODUCTS – Morgan Aggregate Plant –
Morgan County

THROUGH: Rik Ombach, Minor Source Oil and Gas Compliance Section Manager

FROM: Kyle Greenberg, Environmental Scientist

DATE: May 6, 2024

SUBJECT: Source: Caterpillar 3412/Generator 3512 (VIN CMJ00124)
Location: 970 West Old Highway Road, Morgan, UT 84050
Contact: Grant Ensign: 801-281-7890
Tester: Montrose Air Quality Services, LLC
Site ID #: 14234
Permit/AO #: Approval Order DAQE-AN142340003-19 dated November 26, 2019
Subject: Review of Pretest Protocol dated April 29, 2024

On May 3, 2024, DAQ received a protocol for testing of a Generator Engine at Morgan Aggregate Plant
in Morgan, UT. Testing will be performed on June 11, 2024, to determine compliance with the emission
limits found in condition II.B.6.e in Approval Order DAQE-AN142340003-19 and 40 CFR Part 63
Subpart ZZZZ.

PROTOCOL CONDITIONS:

1. Method 1 used to determine sample traverses: OK
2. Method 2 used to determine stack gas velocity and volumetric flow rate: OK
3. Method 3A used to determine O2 and CO2 concentrations of the gas stream: OK
4. Method 4 used to determine moisture content: OK
5. Method 7E used to determine NOx emissions: OK
6. Method 10 used to determine CO emissions: OK

DEVIATIONS: None.

CONCLUSION: The protocol appears to be acceptable.

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RECOMMENDATION: The methods proposed in the pretest protocol are sufficient to
determine NOx and CO emissions from the Generator Engine. It
is recommended that the pretest protocol be determined as
acceptable.

ATTACHMENTS: Geneva Rock Product’s Test Notification Letter and Pretest
Protocol