DAQ-2024-010461

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

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-941-24
Site 12776 (B1)

Grant Ensign
Geneva Rock Products
730 North 1500 West
Orem, UT 84057

Dear Mr. Ensign:

Re: Geneva Rock Products – Modification to Temporary Relocation DAQC-350-24 – Change
in Equipment – Salt Lake County

Your request dated September 16, 2024, to change the portable equipment referenced for use at
the temporary project for Geneva Rock Product’s Mount Jordan Pit, located at 15200 South Pony
Express Boulevard, Bluffdale, Utah, was received by the Utah Division of Air Quality (DAQ) and
has been reviewed.

The following equipment has now been approved for operation for this temporary project:

500 tph crusher
CAT 400 kW generator
500 tph mobile crusher
Screens
Conveyors

The State of Utah has permitted portable equipment for Geneva Rock Products on the Approval
Order (AO) AO DAQE-AN110420003-21 dated February 17, 2021. The above referenced
location is a permitted facility with established production limits. The portable equipment
operating at this facility must be done in accordance with the permanent Geneva Rock Products
AO DAQE-AN127760008-22 dated February 17, 2022. The production of aggregate and hours of
operation from all temporary projects when combined with the permanent equipment’s production
and hours of operation cannot exceed the 12-month rolling limits as per conditions II.B.1.b and
II.B.3.a of this AO. As per Condition II.B.3.c of the above referenced portable AO, the permitted
temporary equipment shall only operate between 6:00 am and 10:00 pm each day. Any request for
a change in these hours shall include modeling showing that all National Ambient Air Quality
Standards are met for this specific air shed.
" - 1 " * " / Û Þ Û Ù Û Ý
DAQC-941-24
Page 2

Approval is granted to relocate and operate this equipment at the new location for a period not to
exceed 180 operational days. As per Utah Administrative Code (UAC) R307-401-17, the
operation of equipment at this temporary site may be for up to 180 working days in any calendar
year not to exceed 365 consecutive days, starting from the initial relocation date. The operational
days per site cannot be extended beyond the stipulated 365 consecutive day period.

The owner/operator shall maintain records of the actual operation hours, days, and production
rate, of the above referenced equipment at this relocation site and have the ability to submit the
information to the DAQ upon the request of representatives of the director. Please make certain
that the plant operator is aware of all the location specific requirements for this site and the
conditions of the aforementioned AO.

Federal New Source Performance Standards Subpart OOO requires that initial Method 9
observations be performed for all applicable portable crushers, screens, and attached conveyors.
Subpart OOO also mandates that all crushers constructed, modified, or reconstructed on or after
April 22, 2008, which are not enclosed, must install spray bars on the equipment and keep
maintenance records to ensure proper spray bar operations.

Utah Division of Water Quality Storm Water Permits and regulations may apply to this temporary
project. Please refer to Utah DEQ Water Quality’s current Storm Water Construction
requirements for additional information.

This approval for relocation in no way releases the owner or operator from any liability for
compliance with all other applicable federal, state, and local regulations including the UAC.

If you have any questions regarding this relocation authorization or the temporary relocation
process, please contact Susan Weisenberg at [phone].

Sincerely,

Jay P. Morris
Assistant Director

JPM:SW:rh

Enclosure: Email correspondence for equipment reference changes
Original submitted temporary relocation form

cc: Salt Lake County Health Department

4 * - - $ . — + A C v A ? A C ? G w B F ˜
Susan Weisenberg <[e-mail]>
Modify TRP: Geneva Rock - DAQC-350-24
1 message
Grant Ensign <[e-mail]>Mon, Sep 16, 2024 at 2:09 PM
To: Susan Weisenberg <[e-mail]>
Hi Susan,
Can we modify an exisng TRP (DAQC-350-24) to remove the following:
9/16/24, 6:46 PM State of Utah Mail - Modify TRP: Geneva Rock - DAQC-350-24
https://mail.google.com/mail/u/0/?ik=bffac613d3&view=pt&search=all&permthid=thread-f:1810384683270656826%7Cmsg-f:1810384683270656826&s…1/2
Thanks!
Grant Ensign
ENVIRONMENTAL SPECIALIST
O [phone] 
C [phone]
WWW.CLYDEINC.COM

9/16/24, 6:46 PM State of Utah Mail - Modify TRP: Geneva Rock - DAQC-350-24
https://mail.google.com/mail/u/0/?ik=bffac613d3&view=pt&search=all&permthid=thread-f:1810384683270656826%7Cmsg-f:1810384683270656826&s…2/2
Susan Weisenberg <[e-mail]>
Requested modification for C-350-24 will include hours of operation reference
1 message
Susan Weisenberg <[e-mail]>Wed, Sep 18, 2024 at 7:39 PM
To: Grant Ensign <[e-mail]>
Hello, your request to modify the equipment descriptions listed on C-350-24 has been submitted to the signature process.
Just as a FYI, a reference to your portable AO's hourly operation limit of 6:00 am to 10:00 pm will be included on the
modified TRP. Thanks
Susan Weisenberg,
Environmental Scientist
Office: 385-306-6512
9/19/24, 7:43 PM State of Utah Mail - Requested modification for C-350-24 will include hours of operation reference
https://mail.google.com/mail/u/0/?ik=bffac613d3&view=pt&search=all&permthid=thread-a:r-6512655691577043390%7Cmsg-a:r429290321942151221…1/1