DAQ-2025-002436

DAQE-GN100080051-25

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Doug Jones
Nucor Steel
PO Box 100
Plymouth, UT 84330
[e-mail]

Dear Mr. Jones:

RE: Replacement-in-Kind of the Two (2) Carbon Process Silo Baghouses at Nucor’s Plymouth
Facility– CDS A; PSD, Nonattainment or Maintenance Area, Title V (Part 70) Major Source,
NSPS (Part 60), MACT (Part 63),
Project Number: N100080051

The Division of Air Quality (DAQ) received your notification, dated April 15, 2025, concerning the
Replacement-in-Kind (RIK) of the two (2) baghouses used to control the two (2) carbon process silos.
DAQ has determined that the exchange of the baghouses satisfies the eligibility criteria outlined in
R307-401-11.

DAQ has determined that Nucor’s Plymouth Facility’s current Approval Order does not need to be
updated. The new baghouses shall operate under the conditions listed in Approval Order DAQE-
AN100080050-24.

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 John Persons, who can be reached at [phone] or [e-mail].

Sincerely,

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Jon L. Black, Manager
New Source Review Section

JLB:JP:jg
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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
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

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