DAQ-2025-002023

DAQE-GN144440003-25

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Michelle Kerns
Glen Canyon National Recreation Area (NRA)
691 Scenic View Road
PO Box 1507
Page, AZ 86040
[e-mail]

Dear Ms. Kerns:

RE: Approval of Extension to Commence Construction and Installation of Permitted Generator
Engines – CDS SM-80; MACT (Part 63), Attainment Area, NSPS (Part 60)
Project Number: N144440003

The Division of Air Quality (DAQ) has received your request, dated March 14, 2025, for extension of
installation of the generator engines permitted in Approval Order (AO) DAQE-AN144440002-24, issued
on April 16, 2024.

In the request, it was stated that Glen Canyon NRA had worked with a contractor to complete the
installation of the permitted generator engines. However, the cost associated with the construction and
installation has been significantly increased due to the time lapse since the original quote years ago. Glen
Canyon NRA is actively exploring opportunities for additional funding to address the increased cost. Glen
Canyon NRA will not be able to complete the project by the end of 18 months after the issuance of the
AO. Therefore, Glen Canyon NRA requests an additional 18-month extension to April 16, 2027, to allow
for the project’s completion.

The DAQ has approved the extension as requested above. Glen Canyon NRA shall submit a document to
update on the status of the project prior to April 16, 2027. The DAQ will evaluate this information to
determine whether reasonable progress has been made. At that time, the DAQ may take one of the
following courses of action based on the information received:

1. Approve the request for additional time to complete the project with no additional requirements;
2. Require a new Best Available Control Technology (BACT) analysis and/or a new Notice of
Intent (NOI) based on the results of the new BACT analysis, or
3. Revoke the AO.
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Tim Davis
Interim Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

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DAQE-GN144440003-25
Page 2
The charge for the review done in making this change is a flat fee plus a filing fee as authorized by the
Utah Legislature. You will receive an invoice for these charges shortly. If you have any questions, please
contact Mr. Enqiang He, who can be reached at [phone] or [e-mail].

Sincerely,

{{$s }}

Alan D. Humpherys, Manager
New Source Review Section

ADH:EH:jg
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DAQE-GN144440003-25
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Michelle Kerns Glen Canyon National Recreation Area (NRA) 691 Scenic View Road
PO Box 1507 Page, AZ 86040 [e-mail] Dear Michelle Kerns: RE: Approval of Extension to Commence Construction and Installation of Permitted Generator Engines – CDS SM-80; MACT (Part 63), Attainment Area, NSPS (Part 60) Project Number: N144440003 The Division of Air Quality (DAQ) has received your request, dated March 14, 2025, for extension of
installation of the generator engines permitted in Approval Order (AO) DAQE-AN144440002-24, issued on April 16, 2024.
In the request, it was stated that Glen Canyon NRA had worked with a contractor to complete the installation of the permitted generator engines. However, the cost associated with the construction and installation has been significantly increased due to the time lapse since the original quote years ago. Glen
Canyon NRA is actively exploring opportunities for additional funding to address the increased cost. Glen Canyon NRA will not be able to complete the project by the end of 18 months after the issuance of the AO. Therefore, Glen Canyon NRA requests an additional 18-month extension to April 16, 2027, to allow for the project completion. The DAQ has approved the extension as requested above. Glen Canyon NRA shall submit a document to update on the status of the project prior to April 16, 2027. The DAQ will evaluate this information to determine whether reasonable progress has been made. At that time, the DAQ may take one of the following courses of action based on the information received: 1. Approve request for additional time to complete the project with no additional requirements;
2. Require a new Best Available Control Technology (BACT) analysis and/or a new Notice of
Intent (NOI) based on the results of the new BACT analysis, or
3. Revoke the AO.
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah
SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor
Department of Environmental Quality
Tim Davis Interim Executive Director DIVISION OF AIR QUALITY Bryce C. Bird Director
DAQE-GN144440003-25 Page 2
The charge for the review done in making this change is a flat fee plus a filing fee as authorized by the Utah Legislature. You will receive an invoice for these charges shortly. If you have any questions, please contact Mr. Enqiang He who can be reached at [phone] or [e-mail]. Sincerely, {{$s }}
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