DAQ-2025-000787

1
DAQC-CI160640001-25
Site ID 16064 (B1)

MEMORANDUM

TO: FILE – ALIGNED ENERGY DATA CENTERS (WVC) PROPCO, LLC – West
Valley City Data Center

THROUGH: Chad Gilgen, Minor Source Compliance Section Manager

FROM: Daniel Riddle, Environmental Scientist

DATE: February 3, 2025

SUBJECT: FULL COMPLIANCE EVALUATION, Minor, Salt Lake County

INSPECTION DATE: October 24, 2024

SOURCE LOCATION: 6368 West Beagley Road
West Valley City, UT 84128
DIRECTIONS: You will need a service ticket to enter the facility. Call on your
intended day of inspection to let them know to prepare one for
you.

SOURCE CONTACTS: Phil Kremer, Building Manager
[e-mail], 224-210-8563

Candace Garner, Maintenance Program Manager
[e-mail]

OPERATING STATUS: Operating normally at the time of inspection.

PROCESS DESCRIPTION: Aligned Energy Data Center in West Valley is a highly secured
facility, which houses server equipment to store, manage, and
disseminate data for various clients, and will operate emergency
backup generators in the loss of power. There are currently eight
3,000 KW compression ignition (CI) engines used for
emergency power generation, and eight diesel storage tanks
installed and operational. All eight engines are equipped with a
Selective Catalytic Reduction (SCR) to reduce NOx emissions.

APPLICABLE REGULATIONS: Approval Order (AO) DAQE-AN160640001-21, dated
November 3, 2021
NSPS (Part 60) IIII: Standards of Performance for Stationary
Compression Ignition Internal Combustion Engines,
NESHAP (Part 63) ZZZZ: National Emissions Standards for
Hazardous Air Pollutants for Stationary Reciprocating Internal
Combustion Engines.

) $ ' $ '
2
SOURCE EVALUATION:

Name of Permittee: Permitted Location:

Aligned Energy Data Centers (WVC) PropCo,
LLC - West Valley City Data Center

2800 Summit Avenue 6368 West Beagley Road
Plano, TX 75074 West Valley City, UT 84128

SIC Code: 7376: (Computer Facilities Management Services)

Section I: GENERAL PROVISIONS

I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions refer to those rules. [R307-101]
I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1]
I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8]
I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. All maintenance performed on equipment authorized by this AO shall be recorded. [R307-401-4]
I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107]
I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150] Status: Out of Compliance. Records were not provided in a timely manner when requested by the DAQ. A Compliance Advisory (DAQC-1250-24) was issued on December 31, 2024. The source responded on January 10, 2025. Based on the response, a No Further Action Letter (DAQC-109-25) was issued on January 31, 2025. No further compliance action is
currently recommended. The equipment appeared to be properly operated and maintained according to
manufacturer recommendations. Records are kept as required and were made available after the inspection. No breakdowns have been reported since the previous inspection. This source is not required to submit an emissions report at this time.

3
I.8 The owner/operator shall submit documentation of the status of construction or modification to the Director within 18 months from the date of this AO. This AO may become invalid if construction is not commenced within 18 months from the date of this AO or if construction is discontinued for 18 months or more. To ensure proper credit when notifying the Director, send the documentation to the Director, attn.: NSR Section. [R307-401-18] Status: In Compliance. Four engines were installed by December 2022, and an initial notification was provided to the DAQ at that time (see DAQC-214-23). The remaining four engines completed installation and were turned over to the source in October 2024. See the attached notification for finished installation.

Section II: SPECIAL PROVISIONS

II.A The approved installations shall consist of the following equipment:

II.A.1 Data Center
II.A.2 Eight (8) Emergency Engines Rating: 3,000 kW (4023 hp) each Fuel: Diesel Controls: Selective Catalytic Reduction NSPS Applicability: Subpart IIII MACT Applicability: Subpart ZZZZ
II.A.3 Eight (8) Diesel Storage Tanks Capacity: 5,000 gallons each
Status: In Compliance. No unapproved equipment was observed at the time of inspection. All of the emergency generators have been installed.

II.B Requirements and Limitations
II.B.1 Facility-Wide Requirements II.B.1.b The owner/operator shall not allow visible emissions from any source on site exceed 20% opacity. [R307-201-3, R307-401-8] II.B.1.b.1 Opacity observations of emissions from stationary sources shall be conducted in accordance with 40 CFR 60, Appendix A, Method 9. [R307-201-3] Status: In Compliance. No visible emissions were observed from any point at the time of inspection. Method 9 was utilized to verify opacity limits. See attached VEO form. II.B.2 Emergency Engine Requirements II.B.2.a The owner/operator shall comply with the following operational limits: A. The owner/operator shall not operate the emergency generator engines for maintenance and testing operations before 6:00 am or after 8:00 pm each day. B. The owner/operator shall not operate more than one emergency generator engine at the same time during maintenance and testing operations. [R307-401-8]

4
II.B.2.a.1 The owner/operator shall: A. Record the date and time that the maintenance and testing was performed; B. Record the emergency generator engine that was maintained and tested; C. Maintain records of maintenance and testing on a daily basis. [R307-401-8] Status: In Compliance. MOPs are kept for generator maintenance runs. See the attached examples from November 23, 2024. The records show that only one generator is run at a time, and hours of operation were between 6:00 am and 8:00 pm. The source stated that these are representative of year-round operating procedures. II.B.2.b The owner/operator shall install each emergency generator engine such that each engine has a stack height of no less than 37 feet measured from the ground. [R307-401-8] Status: In Compliance. Each engine stack is 46 feet above the ground. See the attached image depicting the stack height. Visual observation at the time of inspection confirmed height > 37 feet. II.B.2.c The owner/operator shall certify that each emergency generator engine installed on site has a controlled (i.e., accounting for SCR) NOx emission rate of 10.31 lb/hr or less at the exhaust point. [R307-401-8] II.B.2.c.1 To demonstrate compliance with the above condition, the owner/operator shall either: A. Purchase a stationary internal combustion engine which has obtained certification as defined in 40 CFR 1039.801; or B. Conduct an initial performance test according to 40 CFR part 1039. C. Maintain the manufacturer's emissions guarantee for the installed engine model. [R307-401-8] Status: In Compliance. SCR reports are maintained for all engines showing that manufacturer's emissions are guaranteed for the installed engine models. See the attached SCR reports and email correspondence. II.B.2.d The owner/operator shall install selective catalytic reduction controls on each emergency generator engine. Emissions from the engine exhaust shall be routed through the selective catalytic reduction unit before being vented to the atmosphere. [R307-401-8] Status: In Compliance. Each Emergency Generator is equipped with a Selective Catalytic Reduction Unit. The emissions from the engine exhaust is routed through the SCR before being vented to the atmosphere. II.B.2.e The owner/operator shall operate the SCRs in accordance with manufacturer specifications and recommendations to minimize ammonia slip. [R307-401-8] II.B.2.e.1 The owner/operator shall inspect the SCRs each calendar year and replace the catalyst in accordance with manufacturer recommendations. Records of SCR inspections and catalyst replacement shall be kept for the life of the equipment. [R307-401-8] Status: In Compliance. Each SCR is inspected as required. See the attached inspection reports. Generators A, B, C, + R have individual reports since they have been in operation for over a year. Generators D + E and F + G are combined into two reports. These generators were turned over to the source in October 2024.
5
II.B.2.f The owner/operator shall not operate each emergency engine on site for more than 100 hours per rolling 12-month period during non-emergency situations. There is no time limit on the use of the engines during emergencies. [R307-401-8, 40 CFR 63 Subpart ZZZZ] II.B.2.f.1 To determine compliance with a rolling 12-month total, the owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. Records documenting the operation of each emergency engine shall be kept in a log and shall include the following: A. The date the emergency engine was used B. The duration of operation in hours C. The reason for the emergency engine usage. [40 CFR 60 Subpart ZZZZ, R307-401-8] II.B.2.f.2 To determine the duration of operation, the owner/operator shall install a non-resettable hour meter for each emergency engine. [R307-401-8, 40 CFR 63 Subpart ZZZZ] Status: In Compliance. For the rolling 12-month period from January 2024 - December 2024, generator run times are as follows: Generator A - 28.3 hours Generator B - 35.2 hours Generator C - 20.9 hours Generator R - 25.2 hours Generator D - 15.3 hours Generator E - 15.7 hours Generator F - 1.1 hours Generator G - 0.4 hours See the attached table. II.B.2.g The owner/operator shall only use diesel fuel (e.g. fuel oil #1, #2, or diesel fuel oil additives) as fuel in each emergency engine. [R307-401-8] II.B.2.g.1 The owner/operator shall only combust diesel fuel that meets the definition of ultra-low sulfur diesel (ULSD), which has a sulfur content of 15 ppm or less. [R307-401-8] II.B.2.g.2 To demonstrate compliance with the ULSD fuel requirement, the owner/operator shall maintain records of diesel fuel purchase invoices or obtain certification of sulfur content from the diesel fuel supplier. The diesel fuel purchase invoices shall indicate that the diesel fuel meets the ULSD requirements. [R307-401-8] Status: In Compliance. Only ULSD fuel is used by the source. See the attached receipt from Wheeler Machinery Co.

6
Section III: APPLICABLE FEDERAL REQUIREMENTS

In addition to the requirements of this AO, all applicable provisions of the following federal programs
have been found to apply to this installation. This AO in no way releases the owner or operator from any
liability for compliance with all other applicable federal, state, and local regulations including UAC
R307.

NSPS (Part 60) IIII: Standards of Performance for Stationary Compression Ignition Internal Combustion
Engines

Status: In Compliance. Compliance with this subpart is satisfied by installing a certified engine,
maintaining and operating the engines in accordance with the manufacturer's instructions, installation
of a non-resettable hour meter, the use of ultra-low sulfur diesel, and maintaining records of use. All
information provided at the time of inspection indicate these engines are being properly maintained and
operated in accordance with this subpart.
NESHAP (Part 63) ZZZZ: National Emissions Standards for Hazardous Air Pollutants for Stationary
Reciprocating Internal Combustion Engines.

Status: In Compliance. Stationary RICE located at area sources of HAP emissions must comply with
Table 2d to subpart ZZZZ of MACT (Part 63), which requires annual maintenance of hoses, oil, belts,
and filters, and the use of ultra-low sulfur fuel. These engines are run less than 100 hours per calendar
year for non-emergency purposes, as required by ZZZZ, and uses only ULSD fuel. Non-resettable hour
meters were observed at the time of inspection.
AREA SOURCE RULES EVALUATION:

The following Area Source Rules were evaluated during this inspection:

Emission Standards: Sulfur Content of Fuels [R307-203]

Status: In Compliance. Only ULSD fuel is used by the source. See the attached receipt from Wheeler
Machinery Co.

Stationary Sources [R307-210]

Status: In Compliance. Compliance with this area source rule is satisfied by compliance with Federal
Requirements NSPS (Part 60) Subpart IIII. See Section III above for more information.
National Emission Standards for Hazardous Air Pollutants [R307-214]

Status: In Compliance. Compliance with this area source rule is satisfied by compliance with Federal
Requirement MACT (Part 63) Subpart ZZZZ. See Section III above for more information.

7
EMISSION INVENTORY:
The emissions listed below are an estimate of the total potential emissions (PTE) from Aligned Energy
Data Centers (WVC) PropCo, LLC - West Valley City Data Center on the Approval Order (AO)
DAQE-AN160640001-21, dated November 3, 2021. PTE are supplied for supplemental purposes only.

Criteria Pollutant PTE tons/yr
CO2 Equivalent 1880.00
Carbon Monoxide 4.26
Nitrogen Oxides 4.13
Particulate Matter - PM10 0.28
Particulate Matter - PM2.5 0.28
Sulfur Dioxide 0.00
Volatile Organic Compounds 0.28

Hazardous Air Pollutant PTE lbs/yr
Benzene (Including Benzene From Gasoline) (CAS #71432) 2

PREVIOUS ENFORCEMENT
ACTIONS: No enforcement action within the past five years.

COMPLIANCE STATUS &
RECOMMENDATIONS: In regards to Approval Order (AO) DAQE-AN160640001-21,
dated November 3, 2021, the overall status is: Out of
Compliance. Records were not provided in a timely manner. A
Compliance Advisory (DAQC-1250-54) was issued on
December 31, 2024. The source responded on January 10, 2025.
Based on the response, a No Further Action Letter
(DAQC-109-25) was issued on January 31, 2025. No further
compliance action is currently recommended.

HPV STATUS: Not Applicable.

RECOMMENDATION FOR
NEXT INSPECTION: Obtain a service ticket to enter the facility by calling in advance
on the day of or the day before your inspection.

NSR RECOMMENDATIONS: None at this time.

ATTACHMENTS: VEO form, email correspondence, SCR reports, hours of
generator usage, 1.8 notification, picture for stack height, ULSD
verification, response to CA
​
Inspection Number 19563099 Customer No 2972476486
Serial Number ZNL00184 Customer Name ALIGNED ENERGY
Make CATERPILLAR Work Order p011806
Model CAT 3516E Completed On 10/18/2024 8:31:46 AM
Equipment Family FAMILY-ALL Inspector kason Christonsen
SMU 84 Hours PDF Generated On 10/18/2024
Location 115 N First St, Tooele, UT Coordinates 1545.64664268494,
40.5322249829776, -
112.291769076681
Technician
Combustion Catalyst SCR Inspection
PM 2 0 40 1
Red - Control panel
4.11 System faults BAD
Comments: Advise unit would not dose. Had fault code for doser needle clogged
4.12 System alarms BAD
Comments: Active fault for dower needle clogged
General Info & Comments
General info/Comments NORMAL
Serial Number : ZNL00184Severity Report Page 1 of 4
Green - Reactor housing
1.1 No visible damage to the reactor GOOD
1.2 Reactor securely fastened to the frame GOOD
1.3 All exhaust flanges securely fastened to the reactor GOOD
Green - Injection and Ductwork
2.1 No visible damge to injection cluster GOOD
2.2 Injection line/injector point in correct orientation GOOD
2.3 Air line securely fastened to the reactor GOOD
2.4 No leaks in urea line GOOD
2.5 No leaks in air lines GOOD
Green - Instrumentation visual check
3.1 no visible damage to pressure transmitter GOOD
3.2 no visible damage to temperature transmitters GOOD
3.3 no visible damage to flue gas sensor GOOD
Green - Control panel
4.1 No visible damage to panel GOOD
4.2 HMI alive and functional GOOD
4.3 Controller alive and functional GOOD
4.4 Communication router/server active GOOD
Serial Number : ZNL00184Severity Report Page 2 of 4
4.5 Modbus communication GOOD
4.6 Check for blown fuses GOOD
4.7 Check run relay GOOD
4.8 Check fault relay GOOD
4.9 Check DPF hi alarm relay GOOD
4.10 Check DPF critical alarm relay GOOD
4.13 Temperature transmitter GOOD
4.14 pressure transmitter GOOD
4.15 Flue gas sensors GOOD
4.16 Engine run signal GOOD
4.17 Engine load signal GOOD
4.19 Urea pump run signal GOOD
Green - Dosing System
5.1 Check for residual urea leaks GOOD
5.2 Compressed air available, at or above 80psi GOOD
5.3 Atomizing air pressure regulator GOOD
5.4 Urea/Air valve GOOD
5.5 Urea is available GOOD
Serial Number : ZNL00184Severity Report Page 3 of 4
5.6 Record urea concentration GOOD
5.7 No blockage in urea line GOOD
5.8 Urea pump runs and generators pressure GOOD
5.9 No blockage in urea return line GOOD
5.10 No Urea leaks GOOD
5.11 No compressed air leaks GOOD
Green - Heater System
6.1 DEF heater line GOOD
Grey - Control panel
4.18 Urea/Air valve audible click N/A
Serial Number : ZNL00184Severity Report Page 4 of 4
​
Inspection Number 19564123 Customer No 2972476486
Serial Number ZNL00191 Customer Name ALIGNED ENERGY
Make CATERPILLAR Work Order p011808
Model 3516E Completed On 10/18/2024 8:36:16 AM
Equipment Family FAMILY-ALL Inspector kason Christonsen
SMU 85 Hours PDF Generated On 10/18/2024
Location 115 N First St, Tooele, UT Coordinates 1546.58218955994,
40.5322249829776, -
112.291769076681
Technician
Combustion Catalyst SCR Inspection
PM 0 0 42 1
Green - Reactor housing
1.1 No visible damage to the reactor GOOD
1.2 Reactor securely fastened to the frame GOOD
1.3 All exhaust flanges securely fastened to the reactor GOOD
Green - Injection and Ductwork
2.1 No visible damge to injection cluster GOOD
2.2 Injection line/injector point in correct orientation GOOD
2.3 Air line securely fastened to the reactor GOOD
2.4 No leaks in urea line GOOD
2.5 No leaks in air lines GOOD
General Info & Comments
General info/Comments NORMAL
Serial Number : ZNL00191Severity Report Page 1 of 4
Green - Instrumentation visual check
3.1 no visible damage to pressure transmitter GOOD
3.2 no visible damage to temperature transmitters GOOD
3.3 no visible damage to flue gas sensor GOOD
Green - Control panel
4.1 No visible damage to panel GOOD
4.2 HMI alive and functional GOOD
4.3 Controller alive and functional GOOD
4.4 Communication router/server active GOOD
4.5 Modbus communication GOOD
4.6 Check for blown fuses GOOD
4.7 Check run relay GOOD
4.8 Check fault relay GOOD
4.9 Check DPF hi alarm relay GOOD
4.10 Check DPF critical alarm relay GOOD
4.11 System faults GOOD
4.12 System alarms GOOD
4.13 Temperature transmitter GOOD
Serial Number : ZNL00191Severity Report Page 2 of 4
4.14 pressure transmitter GOOD
4.15 Flue gas sensors GOOD
4.16 Engine run signal GOOD
4.17 Engine load signal GOOD
4.19 Urea pump run signal GOOD
Green - Dosing System
5.1 Check for residual urea leaks GOOD
5.2 Compressed air available, at or above 80psi GOOD
5.3 Atomizing air pressure regulator GOOD
5.4 Urea/Air valve GOOD
5.5 Urea is available GOOD
5.6 Record urea concentration GOOD
5.7 No blockage in urea line GOOD
5.8 Urea pump runs and generators pressure GOOD
5.9 No blockage in urea return line GOOD
5.10 No Urea leaks GOOD
5.11 No compressed air leaks GOOD
Green - Heater System
Serial Number : ZNL00191Severity Report Page 3 of 4
6.1 DEF heater line GOOD
Grey - Control panel
4.18 Urea/Air valve audible click N/A
Serial Number : ZNL00191Severity Report Page 4 of 4
​
Inspection Number 19564237 Customer No 2972476486
Serial Number ZNL00188 Customer Name ALIGNED ENERGY
Make CATERPILLAR Work Order p011809
Model 3516E Completed On 10/18/2024 8:41:45 AM
Equipment Family FAMILY-ALL Inspector kason Christonsen
SMU 91 Hours PDF Generated On 10/18/2024
Location 115 N First St, Tooele, UT Coordinates 1510.12430381775,
40.5322249829776, -
112.291769076681
Technician
Combustion Catalyst SCR Inspection
PM 0 0 42 1
Green - Reactor housing
1.1 No visible damage to the reactor GOOD
1.2 Reactor securely fastened to the frame GOOD
1.3 All exhaust flanges securely fastened to the reactor GOOD
Green - Injection and Ductwork
2.1 No visible damge to injection cluster GOOD
2.2 Injection line/injector point in correct orientation GOOD
2.3 Air line securely fastened to the reactor GOOD
2.4 No leaks in urea line GOOD
2.5 No leaks in air lines GOOD
General Info & Comments
General info/Comments NORMAL
Serial Number : ZNL00188Severity Report Page 1 of 4
Green - Instrumentation visual check
3.1 no visible damage to pressure transmitter GOOD
3.2 no visible damage to temperature transmitters GOOD
3.3 no visible damage to flue gas sensor GOOD
Green - Control panel
4.1 No visible damage to panel GOOD
4.2 HMI alive and functional GOOD
4.3 Controller alive and functional GOOD
4.4 Communication router/server active GOOD
4.5 Modbus communication GOOD
4.6 Check for blown fuses GOOD
4.7 Check run relay GOOD
4.8 Check fault relay GOOD
4.9 Check DPF hi alarm relay GOOD
4.10 Check DPF critical alarm relay GOOD
4.11 System faults GOOD
4.12 System alarms GOOD
4.13 Temperature transmitter GOOD
Serial Number : ZNL00188Severity Report Page 2 of 4
4.14 pressure transmitter GOOD
4.15 Flue gas sensors GOOD
4.16 Engine run signal GOOD
4.17 Engine load signal GOOD
4.19 Urea pump run signal GOOD
Green - Dosing System
5.1 Check for residual urea leaks GOOD
5.2 Compressed air available, at or above 80psi GOOD
5.3 Atomizing air pressure regulator GOOD
5.4 Urea/Air valve GOOD
5.5 Urea is available GOOD
5.6 Record urea concentration GOOD
5.7 No blockage in urea line GOOD
5.8 Urea pump runs and generators pressure GOOD
5.9 No blockage in urea return line GOOD
5.10 No Urea leaks GOOD
5.11 No compressed air leaks GOOD
Green - Heater System
Serial Number : ZNL00188Severity Report Page 3 of 4
6.1 DEF heater line GOOD
Grey - Control panel
4.18 Urea/Air valve audible click N/A
Serial Number : ZNL00188Severity Report Page 4 of 4
​
Inspection Number 19564158 Customer No 2972476486
Serial Number ZNL00194 Customer Name ALIGNED ENERGY
Make CATERPILLAR Work Order p011811
Model 3516E Completed On 10/18/2024 8:52:19 AM
Equipment Family FAMILY-ALL Inspector kason Christonsen
SMU 87 Hours PDF Generated On 10/24/2024
Location 115 N First St, Tooele, UT Coordinates 1546.75601768494,
40.5322249829776, -
112.291769076681
Technician
Combustion Catalyst SCR Inspection
PM 0 0 42 1
Green - Reactor housing
1.1 No visible damage to the reactor GOOD
1.2 Reactor securely fastened to the frame GOOD
1.3 All exhaust flanges securely fastened to the reactor GOOD
Green - Injection and Ductwork
2.1 No visible damge to injection cluster GOOD
2.2 Injection line/injector point in correct orientation GOOD
2.3 Air line securely fastened to the reactor GOOD
2.4 No leaks in urea line GOOD
2.5 No leaks in air lines GOOD
General Info & Comments
General info/Comments NORMAL
Serial Number : ZNL00194Severity Report Page 1 of 4
Green - Instrumentation visual check
3.1 no visible damage to pressure transmitter GOOD
3.2 no visible damage to temperature transmitters GOOD
3.3 no visible damage to flue gas sensor GOOD
Green - Control panel
4.1 No visible damage to panel GOOD
4.2 HMI alive and functional GOOD
4.3 Controller alive and functional GOOD
4.4 Communication router/server active GOOD
4.5 Modbus communication GOOD
4.6 Check for blown fuses GOOD
4.7 Check run relay GOOD
4.8 Check fault relay GOOD
4.9 Check DPF hi alarm relay GOOD
4.10 Check DPF critical alarm relay GOOD
4.11 System faults GOOD
4.12 System alarms GOOD
4.13 Temperature transmitter GOOD
Serial Number : ZNL00194Severity Report Page 2 of 4
4.14 pressure transmitter GOOD
4.15 Flue gas sensors GOOD
4.16 Engine run signal GOOD
4.17 Engine load signal GOOD
4.19 Urea pump run signal GOOD
Green - Dosing System
5.1 Check for residual urea leaks GOOD
5.2 Compressed air available, at or above 80psi GOOD
5.3 Atomizing air pressure regulator GOOD
5.4 Urea/Air valve GOOD
5.5 Urea is available GOOD
5.6 Record urea concentration GOOD
5.7 No blockage in urea line GOOD
5.8 Urea pump runs and generators pressure GOOD
5.9 No blockage in urea return line GOOD
5.10 No Urea leaks GOOD
5.11 No compressed air leaks GOOD
Green - Heater System
Serial Number : ZNL00194Severity Report Page 3 of 4
6.1 DEF heater line GOOD
Grey - Control panel
4.18 Urea/Air valve audible click N/A
Serial Number : ZNL00194Severity Report Page 4 of 4
SCR Service Report Form

• 311 Riggs Street • Bloomer, WI 54724 •715-568-2882 •
www.catalyticcombustion.com 51180 Rev B
5/20/2020
pg. 1

CUSTOMER INFORMATION END USER INFORMATION
CUSTOMER: Holt CAT END USER: Aligned Data Center
ADDRESS: 2001 N. Loop12
Irving, TX 75061
ADDRESS: SLC04-2
6368 W Beagley Rd
West Valley City, UT
PHONE: [phone] PHONE: Click or tap here to enter text.
CONTACT: Tino Charuma CONTACT: Click or tap here to enter text.
SERVICE DATE: 12/22/2023

CUSTOMERS SERVICE REQUEST: SCR Commissioning
Service Trip WO #: WO204789
APPLICATION TYPE: RAIL ☐ MARINE ☐ POWER ☒
SERVICE TYPE: COMMISSIONING ☒ INSPECTION ☐ REPAIR ☐
SYSTEM TYPE: SCR ONLY ☒ DOTC + SCR ☐ DPF + SCR ☐
BILLING: PAID ☒ WARRANTY ☐ OTHER* ☐
IF OTHER, EXPLAIN: Click or tap here to enter text.
COMMISSIONING WORK PERFORMED:

Week of 12/22/2023
Notable issues:
Corrected mis-landed wires for NOx and NH3 sensors
Gen4-01E not wired. CCC completed wiring from control panel to junction panel. Corrected dosing wires.
Air lines not done yet. Thermocouples not connected.
Completed cx on Gen4-01E & Gen4-01D

Systems Fully Commissioned:
Holt #01D, CCC SCR Serial # WO190117 (SCR System WO191883)
Holt #01E, CCC SCR Serial # WO190118 (SCR System WO191881)

IS SERVICE COMPLETED? YES ☐ NO ☒
IF NO, WHAT ADDITIONAL SERVICE AND/OR PARTS ARE REQUIRED:

RECOMMENDATIONS:

OTHER NOTES:

Mason Rubenzer / Lucas Szura / Jamie Westling 1/2/2024
SERVICE TECHNICIAN REPORT SUBMISSION DATE

SCR Service Report Form

• 311 Riggs Street • Bloomer, WI 54724 •715-568-2882 •
www.catalyticcombustion.com 51180 Rev B
5/20/2020
pg. 1

CUSTOMER INFORMATION END USER INFORMATION CUSTOMER: Holt CAT END USER: Aligned Data Center ADDRESS: 2001 N. Loop12 Irving, TX 75061
ADDRESS: SLC04-3 6368 W Beagley Rd West Valley City, UT PHONE: [phone] PHONE: Click or tap here to enter text. CONTACT: Tino Charuma CONTACT: Click or tap here to enter text. SERVICE DATE: 1/20/2024
CUSTOMERS SERVICE REQUEST: SCR Commissioning
Service Trip WO #: WO205794
APPLICATION TYPE: RAIL ☐ MARINE ☐ POWER ☒
SERVICE TYPE: COMMISSIONING ☒ INSPECTION ☐ REPAIR ☐
SYSTEM TYPE: SCR ONLY ☒ DOTC + SCR ☐ DPF + SCR ☐
BILLING: PAID ☒ WARRANTY ☐ OTHER* ☐
IF OTHER, EXPLAIN: Click or tap here to enter text.
COMMISSIONING WORK PERFORMED: Week of 1/15/2024: Items Completed on Gen4-01F: Missing dosing return line corrected Loose connection in the air line corrected Fixed wiring on PT102 Fixed loose connection in junction panel Fixed injection lance installation (not tightened down) Corrected 24V wire landing in the junction box Items Completed on Gen4-01G: Missing dosing return line corrected Tightened air lines Ran wire from control panel to junction panel Notable issues: Systems Fully Commissioned: Holt Gen4-01F (PO1012004), CCC SCR Serial # WO196145-1 (SCR System WO196468) Holt Gen4-01G (PO1012004), CCC SCR Serial # WO196144-1 (SCR System WO196467)
IS SERVICE COMPLETED? YES ☐ NO ☒
IF NO, WHAT ADDITIONAL SERVICE AND/OR PARTS ARE REQUIRED:
SCR Service Report Form

• 311 Riggs Street • Bloomer, WI 54724 •715-568-2882 •
www.catalyticcombustion.com 51180 Rev B
5/20/2020
pg. 2
RECOMMENDATIONS: Click or tap here to enter text.
OTHER NOTES:
Mason Rubenzer / Jeremiah Laughlin 1/23/2024
SERVICE TECHNICIAN REPORT SUBMISSION DATE
Daniel Riddle <[e-mail]>
SLC04 Generator Addition
1 message
Philip Kremer <[e-mail]>Thu, Jan 9, 2025 at 2:07 PM
To: Daniel Riddle <[e-mail]>
Cc: Ben Greenburg <[e-mail]>
Bryce C. Bird
State of Utah
Division of Air Quality
P.O. Box 144820
Salt Lake City, UT
84114-4820
To Division of Air Quality,
I am wring to inform you that as of 10/01/2025 the last 4 to total the eight emergency generators
approved in AO DAQE-AN160640001-21 for our site located at 6368 West Beagley Rd West Valley City,
UT 84128 have been installed. This should sasfy the requirement listed in secon I.8 of the above-
menoned AO.
Philip Kremer
Facility Manager | Aligned
m: 224.210.8563 | AlignedDC.com
3333 West 9000 South | West Jordan | UT | 84088
The content of this email is confidential and intended for the recipient specified inmessage only. It is strictly forbidden to share any part of this message with any thirdparty, without a written consent of the sender. If you received this message bymistake, please reply to this message and follow with its deletion, so that we can
ensure such a mistake does not occur in the future.
1/13/25, 9:42 AM State of Utah Mail - SLC04 Generator Addition
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-f:1820806995720573523&simpl=msg-f:1820806995720573523 1/1
Daniel Riddle <[e-mail]>
16064 - Follow up to air quality inspection
18 messages
Daniel Riddle <[e-mail]>Thu, Oct 24, 2024 at 12:25 PM
To: [e-mail], "[e-mail]" <[e-mail]>
Candace and Ben,
Thank you for allowing me into your facility today for your air quality inspection. Here are the records I require to
complete my inspection report:
From AO-AN160640001-21:
Condition I.8 - Now that all engines are installed and operational, please provide a formal notification as described in this
condition
Condition II.B.2.a - proof that engines are only operated between 6 am and 8 pm for maintenance and testing, as well as
that only one was tested at a time
Condition II.B.2.b. - proof that stack heights of each engine are at least 37 feet
Condition II.B.2.c - certification for each emergency generator engine that NOx emission is 10.31 lb/hr or less
Condition II.B.2.c.1 - record of most recent NOx certification maintenance on generators
Condition II.B.2.e.1 - record of inspection and replacement of SCRs in past year
Condition II.B.2.f - total hours of engine maintenance and testing for each generator (Oct 23 - Sept 24)
Condition II.B.2.g - proof of ULSD fuel purchase
Please provide these records by October 31, 2024. Thanks and let me know if you have any questions.
Best,
Daniel
AO.pdf
2285K
Daniel Riddle <[e-mail]>Thu, Oct 24, 2024 at 12:27 PM
To: "[e-mail]" <[e-mail]>, "[e-mail]"
<[e-mail]>
Resending since I had an email typed incorrectly.
[Quoted text hidden]
Daniel Riddle <[e-mail]>Tue, Nov 5, 2024 at 10:02 AM
To: "[e-mail]" <[e-mail]>, "[e-mail]"
<[e-mail]>
Candace and Ben - I wanted to check in on the status of these records?
[Quoted text hidden]
Candace Garner <[e-mail]>Tue, Nov 5, 2024 at 11:15 AM
To: Daniel Riddle <[e-mail]>, Ben Greenburg <[e-mail]>, Philip Kremer
<[e-mail]>
Hi Daniel,

I’ve added Phil Kremer to this email as he is the current Facility Manager for the building you’re seeking
information on. I am no longer the Facility Manager and have moved into the position of Maintenance
1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…1/7
You don't often get email from [e-mail]. Learn why this is important
Program Manager.

I will work on procuring documentation for the most recent maintenance inspection on the SCR system. This
was just recently completed, and our contractor has not yet provided the complete documentation for the
SCRs, I have requested this information asap.

Between Ben and Phil, they should be able to provide you with the remainder of the information you’re
requesting.

Thank you for your patience here.

Candace

From: Daniel Riddle <[e-mail]>
Sent: Tuesday, November 5, 2024 10:03 AM
To: Ben Greenburg <[e-mail]>; Candace Garner <[e-mail]>
Subject: Re: 16064 - Follow up to air quality inspecon

[Quoted text hidden]
Daniel Riddle <[e-mail]>Tue, Nov 5, 2024 at 12:41 PM
To: Candace Garner <[e-mail]>
Cc: Ben Greenburg <[e-mail]>, Philip Kremer <[e-mail]>
Alright - thank you for letting me know. Please provide these records as soon as possible.
[Quoted text hidden]
Candace Garner <[e-mail]>Tue, Nov 5, 2024 at 2:36 PM
To: Daniel Riddle <[e-mail]>
Cc: Ben Greenburg <[e-mail]>, Philip Kremer <[e-mail]>
Daniel,

Attached are the SCR Inspection records for this year for the 4 generators that have been in service for over
a year. The four new generators were just recently turned over to us Operations folks from Construction.
We’ve reached out to our Construction team to gather the testing information from the newest units so that
we may provide that for you.

Thanks,
[Quoted text hidden]
1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…2/7
4 attachments
Aligned Energy-Gen4.1C-SCR-19564237-ZNL00188-10-18-24-P011809.pdf
59K
Aligned Energy-Gen4.1R-SCR-19564158-ZNL00194-10-18-24-P011811.pdf
57K
Aligned Energy-Gen4.1A-SCR-19563099-ZNL00184-10-18-24-P011806.pdf
210K
Aligned Energy-Gen4.1B-SCR-19564123-ZNL00191-10-18-24-P011808.pdf
59K
Daniel Riddle <[e-mail]>Thu, Nov 7, 2024 at 12:53 PM
To: Candace Garner <[e-mail]>
Cc: Ben Greenburg <[e-mail]>, Philip Kremer <[e-mail]>
Thank you for sending these. Keep sending the other records as you are able.
[Quoted text hidden]
Daniel Riddle <[e-mail]>Wed, Nov 20, 2024 at 1:34 PM
To: Candace Garner <[e-mail]>
Cc: Ben Greenburg <[e-mail]>, Philip Kremer <[e-mail]>
Candace, Ben, and Phil,
Do you have the remaining SCR inspection records as well as the other records I requested in my first email available?
[Quoted text hidden]
Daniel Riddle <[e-mail]>Mon, Nov 25, 2024 at 11:02 AM
To: Philip Kremer <[e-mail]>
Here is the original message I sent to Candace and Ben
[Quoted text hidden]
AO.pdf
2285K
Daniel Riddle <[e-mail]>Thu, Dec 19, 2024 at 8:32 AM
To: Candace Garner <[e-mail]>
Cc: Ben Greenburg <[e-mail]>, Philip Kremer <[e-mail]>
Hello all,
I still need these records:
From AO-AN160640001-21:
Condition I.8 - Now that all engines are installed and operational, please provide a formal notification as described in this
condition
Condition II.B.2.a - proof that engines are only operated between 6 am and 8 pm for maintenance and testing, as well as
that only one was tested at a time
Condition II.B.2.b. - proof that stack heights of each engine are at least 37 feet
Condition II.B.2.c - certification for each emergency generator engine that NOx emission is 10.31 lb/hr or less
Condition II.B.2.c.1 - record of most recent NOx certification maintenance on generators
Condition II.B.2.e.1 - record of inspection and replacement of SCRs in past year (Candace sent 4 of them, but I need the
rest)
Condition II.B.2.f - total hours of engine maintenance and testing for each generator (Oct 23 - Sept 24)
Condition II.B.2.g - proof of ULSD fuel purchase
[Quoted text hidden]
1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…3/7
Philip Kremer <[e-mail]>Thu, Dec 19, 2024 at 3:16 PM
To: Daniel Riddle <[e-mail]>, Candace Garner <[e-mail]>
Cc: Ben Greenburg <[e-mail]>
Hey Daniel,
I'll send over the informaon that I currently have on hand. We are working with our construcon
department on the documents for the turnover of all the new generators and commissioning documents for
the newly turned over generators.
Condition I.8 - Now that all engines are installed and operational, please provide a formal notification as
described in this condition
Condition II.B.2.a - proof that engines are only operated between 6 am and 8 pm for maintenance and
testing, as well as that only one was tested at a time - We have our MOP to record generator run times
and to ensure only 1 generator to be ran at a time, attached are 2 different generators for the same
generator monthly run test.
Condition II.B.2.b. - proof that stack heights of each engine are at least 37 feet - Drawing of stack height
attached
Condition II.B.2.c - certification for each emergency generator engine that NOx emission is 10.31 lb/hr or
less
Condition II.B.2.c.1 - record of most recent NOx certification maintenance on generators
Condition II.B.2.e.1 - record of inspection and replacement of SCRs in past year (Candace sent 4 of them,
but I need the rest) - 2/4 attached in the field SCR report
Condition II.B.2.f - total hours of engine maintenance and testing for each generator (Oct 23 - Sept 24) -
Screenshot of our log attached
Condition II.B.2.g - proof of ULSD fuel purchase - Receipt attached 
If you need any more informaon or documentaon from what has been provided, please let me know and
we will get it sent. Hoping to have the rest of the items by the new year.
Thank you,
From: Daniel Riddle <[e-mail]>
Sent: Thursday, December 19, 2024 8:32 AM
[Quoted text hidden]

[Quoted text hidden]
7 attachments
SLC04 Gen Runs Sept-Oct.png
10K
1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…4/7
SLC04 Sept detail run log.png
59K
SLC04 Stack Height.png
640K
DULSD.pdf
98K
01B 11-23-24.pdf
1232K
01A 11-23-24.pdf
1230K
WO205794 Field Report (20240116-20240120) SLC04-3.docx
117K
Daniel Riddle <[e-mail]>Thu, Dec 26, 2024 at 11:10 AM
To: Philip Kremer <[e-mail]>
Cc: Candace Garner <[e-mail]>, Ben Greenburg <[e-mail]>
Thanks Philip. Please send the rest of the documents as you are able and I'll let you know if I have any questions.
[Quoted text hidden]
Daniel Riddle <[e-mail]>Mon, Dec 30, 2024 at 9:29 AM
To: Philip Kremer <[e-mail]>
Cc: Candace Garner <[e-mail]>, Ben Greenburg <[e-mail]>
A compliance advisory was just approved yesterday that was initially submitted the day before you sent those records
Philip. It was calling for the records to be submitted. After you receive that, a response is required within ten days. If you
can provide the rest of the records by that time, we will close that compliance action out with a no further action letter.
[Quoted text hidden]
Philip Kremer <[e-mail]>Fri, Jan 3, 2025 at 5:06 PM
To: Daniel Riddle <[e-mail]>
Cc: Candace Garner <[e-mail]>, Ben Greenburg <[e-mail]>
Hey Daniel,
Aached is the SCR report for the D+E generators at SLC04.
From: Daniel Riddle <[e-mail]>
Sent: Monday, December 30, 2024 9:29 AM
To: Philip Kremer <[e-mail]>
1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…5/7
Cc: Candace Garner <[e-mail]>; Ben Greenburg <[e-mail]>
[Quoted text hidden]

[Quoted text hidden]
WO204789 Field Report (20231219-20231222) SLC04-2.pdf
178K
Daniel Riddle <[e-mail]>Wed, Jan 8, 2025 at 10:05 AM
To: Philip Kremer <[e-mail]>
Cc: Candace Garner <[e-mail]>, Ben Greenburg <[e-mail]>
Phil,
Did the Compliance Advisory arrive to Michael Welch in Texas? It requires a formal written response within ten
business days of receipt. You can send that to me via email.
Additionally, I have a couple of questions about the records you sent me:
Condition II.B.2.f states: The owner/operator shall not operate each emergency engine on site for more than
100 hours per rolling 12-month period during non-emergency situations. There is
no time limit on the use of the engines during emergencies. [R307-401-8, 40 CFR
63 Subpart ZZZZ]
So, I need the total hours of operation for each individual generator for the 12-month period from October 2023 - Sept
2024. This is run-time only for maintenance purposes - any emergency hours should not be included. I understand that
four of the generators in October 2024? So it might be that you only have hours for maintenance for the first four
generators, but I do need individual tables for each of those showing the total hours of operation month to month. One of
the records you sent me only show two months, and do not specify which generator. The other table only shows run time
from Sept 2024. If you had similar tables for each of the months prior to this back to October 2023, then that could satisfy
this requirement.
Finally, I still need records to satisfy Conditions I.8, II.B.2.c, and II.B.2.c.1 as we discussed on the phone last week.
Please let me know if you have any question,
Best,
Daniel
[Quoted text hidden]
Philip Kremer <[e-mail]>Wed, Jan 8, 2025 at 12:57 PM
To: Daniel Riddle <[e-mail]>
Cc: Candace Garner <[e-mail]>, Ben Greenburg <[e-mail]>
Hey Daniel,
I will check with Michael Welch on receiving that leer and we will make sure to get the official response
back to you ASAP, likely via email.
Aached are the total run mes for the past 2 years on those generators. Also, I aached the SCR report for
the other 2 generators to meet II.B.2.c, and II.B.2.c.1 requirements.
Will a simple email addressed to you stang that we have received the final 4 generators at this site with
the turnover date be enough for the I.8 requirement?
From: Daniel Riddle <[e-mail]>
Sent: Wednesday, January 8, 2025 10:05 AM
[Quoted text hidden]

1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…6/7
[Quoted text hidden]
3 attachments
SLC04 gen total run times 2023.png
70K
SLC04 gen total run times 2024.png
71K
WO204789 Field Report (20231219-20231222) SLC04-2.pdf
178K
Daniel Riddle <[e-mail]>Thu, Jan 9, 2025 at 1:45 PM
To: Philip Kremer <[e-mail]>
Cc: Candace Garner <[e-mail]>, Ben Greenburg <[e-mail]>
Yes that will suffice for I.8.
According to the attached green slip, someone received the letter on January 3. I'm attaching the CA electronically. Let
me know if it doesn't come through. For your response, you could write that you have worked with me to submit all
records in these past few weeks. Let me know if any of the attachments don't work.
[Quoted text hidden]
2 attachments
C-1250-24 Certified Delivery from USPS webpage on 01-08-25.pdf
182K
CA.pdf
400K
Ben Greenburg <[e-mail]>Fri, Jan 10, 2025 at 11:18 AM
To: Daniel Riddle <[e-mail]>, Philip Kremer <[e-mail]>
Cc: Candace Garner <[e-mail]>
Hey Daniel,
I did call and leave you a message, I have the response put together for the certified letter, I am
reaching out to verify that we have provided everything that you need. Please give me a call.
[phone]

Thanks,
Ben Greenburg
Director of Operations
[Quoted text hidden]
1/22/25, 3:41 PM State of Utah Mail - 16064 - Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=3e54b7a6bd&view=pt&search=all&permthid=thread-a:r7817017606632611846&simpl=msg-a:r-58870975478393…7/7
January 10, 2025
Chad Gilgen, Manager
Minor Source Compliance Section
Utah Division of Air Quality
P.O. Box 144820
Salt Lake City, UT 84114-4820
Re: Response to Compliance Advisory – Aligned Energy Data Centers,
Approval (AO) DAQE-AN160640001-21, Salt Lake County
Dear Mr. Gilgen:
We are writing in response to your letter to Michael Welch, dated December 30, 2024.
Please be advised that we have been working closely with Daniel Riddle, as you
directed, and have provided all requested records for Aligned Energy Data Centers
located at 6368 West Beagley Road, West Valley City, Utah (Site ID 16064 (B1);
DAQC-1250-24). Specifically, Aligned provided the following information to the DAQ:

AO-AN160640001-21:
o Condition I.8
o Condition II.B.2.a
o Condition II.B.2.b
o Condition II.B.2.c
o Condition II.B.2.c.1
o Condition II.B.2.e.1
o Condition II.B.2.f
o Condition II.B.2.g
Please confirm with Mr. Riddle that no additional information is required and that there
are no questions or comments.

cc: Salt Lake County Health Department