DAQ-2025-002568

Response Summary:
The form below will collect the information to start the revocation process. Please fill out the information and a NSR
Engineer will be contacting you with any follow up requirements.

Q2. Company/Owner Information:
Owner Name:Redmond Minerals Inc.
Address 2725 N 100 W
City Redmond
State UT
Zip 84665

Q4. Contact Information:
Contact Name:Mike Forbush
Contact email:[e-mail]
Contact phone [phone]

Q3. Permit Information:
Site Name:Bentonite Processing Plant
Site ID:N/A
Permit ID: Ex DAQE-
111110001-21 DAQE-AN0100350011-10

Q9. Is the AO revocation subject to the Oil and Gas PBR Registration? PBR Requirements
No

Q5. Please provide an explanation for the request to revoke your permit
We no longer use this facility and have no plans of using it in the future.

Q6. The undersigned acknowledges they are the responsible party to provide DAQ with this information and
authorize DAQ to bill the fee for revoking an AO. As authorized by Utah Legislature, the fee is the time spent
by the Permitting staff.
[Click here]

Embedded Data:
N/A
Lucia Mason <[e-mail]>
Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite
16 messages
Lucia Mason <[e-mail]>Fri, Dec 13, 2024 at 6:16 PM
To: [e-mail]
Hi Mike,
The Division of Air Quality (DAQ) is making customary permit updates to the approval order (AO) for Redmond Minerals' Clay Processing Plant (10035).
Please provide the following updated contact information for the site:
Site: phone number, and email (if applicable)
Company: physical address, billing address, mailing address, phone number, fax number (if applicable) and email
Environmental contact: name, physical address, mailing address, phone number, fax number (if applicable) and email
Billing contact: (if different from environmental contact): name, physical address, phone number, fax number (if applicable) and email
Name on Approval Order: (if different from environmental contact): name, physical address, mailing address, phone number, fax number (if
applicable) and email
Feel free to reach out with any questions.
Thanks,
Lucia
Mike Forbush <[e-mail]>Mon, Dec 16, 2024 at 1:45 PM
To: Lucia Mason <[e-mail]>
Hi Lucia,
The information you requested is below:
· Site: Phone [phone], the best email would be [e-mail]
· Company: Redmond Minerals 2725 N 100 W Redmond UT 84652 PO Box 219
· Environmental contact: Mike Forbush, [e-mail], [phone]
· Billing contact: Mike Forbush, [e-mail], [phone]
· Name on Approval Order: Mike Forbush, [e-mail], [phone]
Let me know if you have any questions
Mike
Lucia Mason <[e-mail]>Mon, Jan 13, 2025 at 1:33 PM
To: Mike Forbush <[e-mail]>
Hi Mike,
Thanks for the updated contact information.
The address and UTM coordinates currently associated with the site are about half a mile apart. Please either provide updated UTM coordinates or an
updated address. The UTM coordinates and address we have on file are listed below:
Address: 7000 North 100 West, Redmond, Sanpete County
UTM Coordinates: 424,800 m Easting, 4,323,250 m Northing, UTM Zone 12
Best,
Lucia
[Quoted text hidden]
Mike Forbush <[e-mail]>Mon, Jan 13, 2025 at 2:14 PM
To: Lucia Mason <[e-mail]>
The updated address is:
Redmond Minerals
5/22/25, 7:40 AM State of Utah Mail - Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-4878031260307807591&simpl=msg-a:r-57868974289160…1/4
2725 N 100 W
Redmond Ut 84665

The site covers 500 acres, so I guess it just depends on where in the site you take the coordinates from…
[Quoted text hidden]
Lucia Mason <[e-mail]>Mon, Jan 13, 2025 at 2:16 PM
To: Mike Forbush <[e-mail]>
Makes sense. Thanks.
[Quoted text hidden]
Lucia Mason <[e-mail]>Tue, Jan 14, 2025 at 10:26 AM
To: Mike Forbush <[e-mail]>
Hi Mike,
The current approval order (AO) for site 10035 indicates that a clay mine, salt mine, and salt processing plant owned by Redmond Minerals are operated
on the same property as the clay processing plant. Ordinarily all these facilities would be permitted under a single AO. However, DAQ records indicate that
the clay processing plant is permitted separately from the other facilities because it is operated intermittently and Redmond Minerals wants the option to
sell or lease this plant to another company. In the event that the clay plant is leased/sold the clay processing plant will be a minor source on its own.
Otherwise, the clay processing plant is viewed as one source along with the clay mine, the salt mine, and the salt processing plant. This is legal because
the combined emissions from all facilities on the property are below major source thresholds.
Is this still correct? If so, I don't see a second AO in our system associated with Redmond Minerals that would permit the clay mine/salt mine/salt
processing plant. Do you have a site number or AO for the mines/salt processing plant?
If the explanation above is not correct, what is the current ownership and permit situation of all relevant facilities?
Please reach out with any questions.
Thanks,
Lucia
[Quoted text hidden]
DAQ-2010-009306 - 0901a068805431d8.pdf
1037K
Lucia Mason <[e-mail]>Tue, Jan 14, 2025 at 11:34 AM
To: Mike Forbush <[e-mail]>
Hi Mike,
One more question. The zip code you provided doesn't seem to be in Redmond. Is the correct zip code 84652?
Let me know.
Thanks!
Lucia
[Quoted text hidden]
Mike Forbush <[e-mail]>Tue, Jan 14, 2025 at 2:21 PM
To: Lucia Mason <[e-mail]>
Lucia,
That’s a great question. We have been keeping them separated for the purpose of selling or leasing the idled clay mill. However,
Redmond recently bought Western Clay. I will ask the question tomorrow in our planning meeting and see what the future plans our inthat regard. I’m sorry about the zip code, the correct one is 84652.
Thanks
Mike

5/22/25, 7:40 AM State of Utah Mail - Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-4878031260307807591&simpl=msg-a:r-57868974289160…2/4
From: Lucia Mason <[e-mail]>
Sent: Tuesday, January 14, 2025 10:27 AM
To: Mike Forbush <[e-mail]>
Subject: Re: Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite

Hi Mike, The current approval order (AO) for site 10035 indicates that a clay mine, salt mine, and salt processing plant owned by Redmond Minerals are operated on the same property as the clay processing plant. Ordinarily all these facilities
[Quoted text hidden]
Lucia Mason <[e-mail]>Tue, Jan 14, 2025 at 2:31 PM
To: Mike Forbush <[e-mail]>
Sounds good. Thank you.
[Quoted text hidden]
Lucia Mason <[e-mail]>Thu, Jan 23, 2025 at 2:27 PM
To: Mike Forbush <[e-mail]>
Hi Mike,
I'm checking in on the status of the clay processing plant. Let me know if you have any updates or questions. If you have updates that would be easier to
explain over the phone feel free to give me a call at [phone].
Best,
Lucia
[Quoted text hidden]
Mike Forbush <[e-mail]>Thu, Jan 23, 2025 at 3:00 PM
To: Lucia Mason <[e-mail]>
Hi Lucia,
Thanks for the reminder. We are going to close the clay processing plant for good. What is the best way to for me to make this happen?
Thanks
Mike

From: Lucia Mason <[e-mail]>
Sent: Thursday, January 23, 2025 2:28 PM
To: Mike Forbush <[e-mail]>
Subject: Re: Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite

Hi Mike, I'm checking in on the status of the clay processing plant. Let me know if you have any updates or questions. If you have updates that would be easier to explain over the phone feel free to give me a call at [phone].
[Quoted text hidden]
Lucia Mason <[e-mail]>Thu, Jan 23, 2025 at 4:08 PM
To: Mike Forbush <[e-mail]>
Hi Mike,
If site 10035 is no longer operating you can revoke the associated approval order (AO) at the following link: https://utahgov.co1.qualtrics.com/jfe/form/SV_
0OFm4bCnka4CQVo
If the plant is still in operation but will be closing in the foreseeable future you should wait until operations have stopped to revoke the AO.
Let me know how you choose to proceed. Please reach out with any questions.
Best,
Lucia
[Quoted text hidden]
5/22/25, 7:40 AM State of Utah Mail - Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-4878031260307807591&simpl=msg-a:r-57868974289160…3/4
Lucia Mason <[e-mail]>Thu, Jan 30, 2025 at 11:38 AM
To: Mike Forbush <[e-mail]>
Hi Mike,
I'm checking in on the email I sent last week. Let me know how you would like to proceed with site 10035.
Best,
Lucia
[Quoted text hidden]
Lucia Mason <[e-mail]>Mon, Mar 24, 2025 at 1:03 PM
To: Mike Forbush <[e-mail]>
Hi Mike,
I'm checking in on your permit revocation for Redmond Minerals' Bentonite Clay Processing plant. You can access the permit revocation request form at
this link.
Let me know if you have any questions. You can reach me over the phone at [phone] or via email.
Thanks,
Lucia
[Quoted text hidden]
Lucia Mason <[e-mail]>Mon, Mar 24, 2025 at 1:04 PM
To: Mike Forbush <[e-mail]>
Sorry, this link.
[Quoted text hidden]
Lucia Mason <[e-mail]>Tue, Apr 22, 2025 at 10:23 AM
To: Mike Forbush <[e-mail]>
Hi Mike,
I'm emailing to check in on Redmond Minerals' permit revocation request for their Bentonite clay processing plant. Please reach out with any updates or
questions.
Here is the link to the permit revocation request form: https://utahgov.co1.qualtrics.com/jfe/form/SV_0OFm4bCnka4CQVo
Best,
Lucia
[Quoted text hidden]
--
Lucia Mason
Environmental Engineer | Utah Division of Air Quality
Address: 1950 West 195 North, Salt Lake City, UT 84116
Phone: [phone]
airquality.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
5/22/25, 7:40 AM State of Utah Mail - Periodic Permit Updates (Division of Air Quality), 10035: Redmond Minerals Incorporated- Bentonite
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-4878031260307807591&simpl=msg-a:r-57868974289160…4/4
Lucia Mason <[e-mail]>
Revocation Request, 10035: Redmond Minerals Incorporated- Bentonite (Clay) Processing Plant
2 messages
Lucia Mason <[e-mail]>Tue, Feb 11, 2025 at 8:37 AM
To: Alan Humpherys <[e-mail]>
Hi Alan,
If you receive a revocation request from site 10035 for Redmond Minerals Incorporated could you send it to me?
Thanks,
Lucia
Alan Humpherys <[e-mail]>Tue, Feb 11, 2025 at 12:56 PM
To: Lucia Mason <[e-mail]>
Will do. I haven't seen it as of yet.
[Quoted text hidden]
--
Alan Humpherys
Manager | Minor NSR Section
P: [phone]
F: [phone]
airquality.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
5/22/25, 7:40 AM State of Utah Mail - Revocation Request, 10035: Redmond Minerals Incorporated- Bentonite (Clay) Processing Plant
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r4207766409850676605&simpl=msg-a:r-846672457111901…1/1
Lucia Mason <[e-mail]>
Three more 10-Year Reviews?
3 messages
Lucia Mason <[e-mail]>Thu, Dec 5, 2024 at 9:32 AM
To: Alan Humpherys <[e-mail]>
Hey Alan,
When you get a chance could you send me three more 10-year reviews?
Thanks,
Lucia
Alan Humpherys <[e-mail]>Thu, Dec 5, 2024 at 11:21 AM
To: Lucia Mason <[e-mail]>
Lucia,
Can you please work on the following 10-year reviews?
Site #1: 10264
Name: Mid-America Pipeline Company- Moab Station
Old AO: DAQE-AN102640004-07 dated 1/5/2007
Peer: Tim
Site #2: 10035
Name: Redmond Minerals Incorporated- Bentonite (Clay) Processing Plant
Old AO: DAQE-AN0100350011-10 dated 11/4/2010
Peer: Katie
Site #3: 10478
Name: Sandy City Animal Services- Sandy City Animal Services
Old AO: DAQE-AN0104780004-10 dated 9/14/2010
Peer: Dungan
Thanks,
Alan
[Quoted text hidden]
--Alan Humpherys
Manager | Minor NSR Section
P: [phone]
F: [phone]
airquality.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
Lucia Mason <[e-mail]>Thu, Dec 5, 2024 at 11:23 AM
To: Alan Humpherys <[e-mail]>
Thank you!
[Quoted text hidden]
5/22/25, 7:39 AM State of Utah Mail - Three more 10-Year Reviews?
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r2146228994574395407&simpl=msg-a:r716812769339568…1/1
State of Utah
GARY R. HERBERT
Govemor
GREG BELL
Lieutenant Governor
November 4, 2010
Mike Forbush
...... Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF AIR QUALITY
Cheryl Heying
Director
Redmond Minerals Incorporated
6005 North 100 West
PO Box 219
Redmond, UT 84652
Dear Mr. Forbush:
FILE
DAQE-AN010035001 l-l0
Re: Approval Order: Modification to Approval Order DAQE-451-94 to Change Equipment and ·
Separate Sources
Project Number: N010035001 l
The attached document is the Approval Order for the above-referenced project Future correspondence
on this Approval Order should include the engineer's name as well as the DAQE number as shown on the
upper right-hand comer of this letter. The project engineer for this action is Mr. Alan Humpherys, who
may be reached at [phone].
Sincerely,
M. ~~~yin~1tive Se reta y '.
Utah Air Quality Board
MCH:AH:dn
cc: Central Utah Health Department
DAQ-2010-009306
195 North 1950 West• Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax (801 ) 536-4099 • T.D.D. [phone]
www.deq.utah.gov
Printed on I 00% recycled paper
----STATE OF UTAH
Department of Environmental Quality
Division of Air Quality
APPROVAL ORDER: Modification to Approval Order
DAQE-451 .. 94 to Change Equipment and Separate Sources
Prepared By: Mr. Alan Humpherys, Engineer
Phone: (801 ) 536-4142
Email: ahumpherys@ utah.gov
APPROVAL ORDER NUMBER
DAQE-AN0100350011-10
Date: November 4, 2010
Redmond Minerals Incorporated
Bentonite (Clay) Processing Plant
Source Contact:
Mr. Mike Forbush Engineer
Phone: ( 435) 657-3617
Y\I\. \ v'\_ :I \d-.
M. Cheryl eying C /
Executive Secretary
Utah Air Quality Board
,.
Abstract
Redmond Minerals Inc. has requested a modification to their AO DAQE-451-94 dated June 7, 1994 to
change equipment and move the clay mining operations to a different AO. The previous AO had several
piec~s of equipment that are no longer on site. This equipment will be removed, and the capacity of the
remaining equipment will be included with this AO. Redmond Minerals, Inc. operates a salt processing
plant on the same property. This AO will include the clay processing plant. Another AO will be issued
for the salt mining, the clay mining, and the salt processing plant. A modeling analysis was performed for
both the salt and the clay plants. Results are contained in DAQE-MN0106750006-10.
Sanpete County is an attainment area of the NAAQS for all pollutants. NSPS Subpart A, Subpart 000,
and Subpart UUU regulations apply to this source. NESHAP and MACT regulations do not apply to this
source. Title V of the 1990 Clean Air Act applies to this source, and this source is considered a Title V
Area Source.
Emissions previously calculated for the facility included tailpipe emissions from mobile equipment. The
emissions from mobile sources were not included in this AO. Due to the removal of the clay mining
activities, the additional equipment, and the removal of mobile source emissions, the potential emissions,
in tons per year, will change as follows: PM10 -17 .51 (which includes PM25), PM2.5 + 0.38 (not
previously accounted for), NOx -2.27, S02 -0.29, CO -0.30, VOC -0.22.
The changes in emissions will result in the following, in tons per year, potential to emit totals: PM10 =
2.39 (which includes PM25), PM25 = 0.38, NOx = 1.43, S02 = 0.01 , CO= 1.20, VOC = 0.08.
This air quality AO authorizes the project with the following conditions and failure to comply with any of
the conditions may constitute a violation of this order. This AO is issued to, and applies to the following:
Name of Permittee: Permitted Location:
Redmond Minerals Incorporated
6005 North 100 West
Bentonite (Clay) Processing Plant
7000 North 100 West
PO Box 219 Redmond
Redmond, UT 84652 Sanpete County, UT 84652
UTM coordinates: 424,800 m Easting, 4,323,250 m Northing, UTM Zone 12
1459 (Clay, Ceramic, & Refractory Minerals, NEC)
I.l
1.2
1.3
1.4
SIC code:
Section I: GENERAL PROVISIONS
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]
The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
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-l]
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 Executive Secretary or Executive Secretary's
representative upon request, and the records shall include the two-year period prior to the date of
DAQE-AN010035001 l-10
Page 3
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I.7
II.A
II.A. l
II.A.2
II.A.3
· II.A.4
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II.A.6
Il.A.7
II.A.8
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]
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 Executive Secretary 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]
The owner/operator shall comply with UAC R307-107. General Requirements: Unavoidable
Breakdowns. [R307-107]
The owner/operator shall comply with UAC R307-150 Series. Inventories, Testing and
Monitoring. [R307-150]
Section II: SPECIAL PROVISIONS
The approved installations shall consist of the following equipment:
Bentonite (Clay) Processing Plant
One (1) Primary System Crusher
(Excell Crusher)
Capacity: 50 tph
One (1) Roll Crusher
Capacity: 50 tph
One (1) Elevator
Capacity: 50 tph
One (1) Screen
Capacity: 50 tph
Clay Processing Plant Baghouse
Capacity: 3,015 ACFM
One (1) Clay Mill Dryer
Capacity: 40 MMBTU/hr
Fuel: Natural Gas
Dryer Baghouse
Capacity: 20,735 ACFM
DAQE-ANO l 00350011-1 O _
Page 4
II.A.9
II.A. IO
11.B
II.B.l
II.B. l.a
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II.B.2
11.B.2.a
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II.B.3
II.B.3.a
11.B.3 .b
Various Conveyors
Various Storage Bins
Requirements and Limitations
The Clay Processing Plant shall be subject to the following
The owner/operator shall notify the Executive Secretary in writing when the equipment listed
in this AO has been installed and is operational. To ensure proper credit when notifying the
Executive Secretary, send your correspondence to the Executive Secretary, attn: Compliance
Section.
If the owner/operator has not notified the Executive Secretary in writing within 18 months
from the date of this AO on the status of the installation, the Executive Secretary shall require
documentation of the continuous in stallation of the operation. If a continuous program of
installation is not proceeding, the Executive Secretary may revoke the AO. [R307-401-18]
The owner/operator shall not process more than 30,000 tons of clay per rolling 12-month
period in the clay processing plant. [R307-401-8]
To determine compliance with a rolling 12-month total, the owner/operator shall calculate a
new 12-month total by the twentieth day of each month using data from the previous 12
months. Records of processing shall be kept for all periods when the plant is in operation.
Processing shall be determined by sales records and/or volumetric survey. The records of
processing shall be kept on a daily basis. [R307-401-8]
Unless otherwise specified in this AO, the owner/operator shall not allow visible emissions
from any stationary source on site to exceed 20 percent opacity. [R307-201-3]
Unless otherwise specified in this AO, opacity observations of emissions from stationary
sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-201-3]
The Clay Mill Dryer shall be subject to the following
The Clay Mill Dryer shall not operate more than two hours per day. [R307-401-8]
Records of operation shall be kept for all periods when the plant is in operation. Hours of
operation shall be determined by supervisor monitoring and maintaining of an operations log.
[R307-401-8]
All Baghouses and Enclosures on site shall be subject to the following
The owner/operator shall not allow visible emissions from any building or baghouse on site to
exceed 7 percent opacity. [R307-401-8]
A manometer or magnehelic pressure gauge shall be installed on each baghouse on site to
measure the differential pressure drop. The static pressure differential across each baghouse
shall be maintained according to the manufactures' specifications. The pressure gauge shall be
located such that an inspector/operator can safely read the indicator at any time. The reading
DAQE-AN010035001 l-10
Page 5
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II.B.3.d
II.B.4
II.B.4.a
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II.B.4.b
II.B.4.b.l
II.B.4.c
II.B.4.d
shall be accurate to within plus or minus 0.5 inches water column. The instrument shall be
calibrated according to the manufactures' instructions annually. The differential pressure drop
shall be recorded on a monthly basis. [R307-401-8)
The Clay Processing Plant Baghouse shall control process streams from the Clay Processing
Plant. [R307-401-8)
The Dryer Baghouse shall control process streams from the Clay Mill Dryer. [R307-401-8)
All Haul Roads and Fugitive Dust Sources on site shall be subject to the following
The owner/operator shall not allow visible emissions from haul roads and fugitive dust sources
on site to exceed 20 percent opacity at all times. [R307-205-4]
Visible emission determinations for fugitive dust emissions from haul-road traffic and mobile
equipment in operational areas shall use procedures similar to Method 9. The normal
requirement for observations to be made at 15-second intervals over a six-minute period,
however, shall not apply. Visible emissions shall be measured at the densest point of the
plume but at a point not less than 1/2 vehicle length behind the vehicle and not less than 1/2
the height of the vehicle. [R307-205-4]
The owner/operator shall treat all unpaved haul roads and operational areas on site with water
or salt brine to maintain opacity limits listed in this AO. The owner/operator may stop
treatment when the temperature is below freezing. [R307-401-8]
Records of haul road treatment shall be kept for all periods when the plant is in operation. The
records shall include the following items:
A. Date and time treatments were made
B. Number of treatments made, dilution ratio, and quantity of water or brine applied
C. Rainfall amount received, if any
D. Records of temperature, if the temperature is below freezing. [R307-401-8)
The outside radial adjustable stackers shall be operated in the following manner:
A. The drop distance to the pile is 3.0 feet or less, except for initial pile building.
B. For initial storage pile building, the stacker shall be lowered to the minimum height
and a fabric drop chute shall be used until the pile is large enough that the maximum
drop distance can be maintained.
C. Operation of the stacker system shall be temporarily discontinued whenever the wind
velocity is 15 mph or greater. A hand-held wind velocity meter or better shall be
maintained on site, and used in determining the times when operation of the stacker
system is discontinued. [R307-401-8)
The owner/operator shall comply with all applicable requirements of R307-205 for Fugitive
Emission and Fugitive Dust sources on site. [R307-205]
DAQE-AN010035001 l-l0
Page 6
II.B.5
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II.B.5.b
II.B.5.c
II.B.5.c.l
II.B.5.c.2
. All clay processing equipment on site subject to NSPS 000 shall comply with the
following
All crushers and screens processing clay on site shall be contained in a building.
[R307-401-8)
The owner/operator shall not allow visible emissions from any unenclosed conveyor transfer
point on site to exceed 10 percent opacity. [40 CFR 60 Subpart 000)
Within 60 days after achieving the maximum production rate but not later than 180 days after
initial startup, the owner/operator shall conduct an initial performance test for all crushers,
screens, and conveyor transfer points on site manufactured after August 31 , 1983.
Performance tests shall meet the limitations specified in Table 2 to Subpart 000 for stack
emissions and Table 3 to Subpart 000 for fugitive emissions. Records of initial performance
tests shall be kept and maintained on site for the life of the equipment. [40 CFR 60 Subpart
000)
Initial performance tests for fugitive emissions limits shall be conducted according to 40 CPR
60.675(b) for stack emission limits and 40 CFR 60.675(c) for fugitive emission limits. The
owner or operator may use methods and procedures specified in 40 CFR 60.675(e) as
alternatives to the reference methods and procedures specified in 40 CFR 60.675(b) and 40
CFR 60.675(c). [40 CPR 60 Subpart 000)
The owner/operator shall submit written reports to the Executive Secretary of the results of all
performance tests conducted to demonstrate compliance with the standards set forth in 40 CFR
60.672. [ 40 CFR 60 Subpart 000]
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), A: General Provisions
NSPS (Part 60), UUU: Calciners/Dryers inMineral Industr
NSPS (Part 60), 000: NonmetallicMineral ProcessingPlnts
PERMIT HISTORY
This AO is based on the following documents:
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Additional Information dated June 30, 2010
Additional Information dated June 9, 2010
Additional Information dated June 1, 2010
Additional Information dated August 10, 2009
DAQE-AN010035001 l-10
Page 7
Is Derived From
Is Derived From
Supersedes
Additional Information dated July 27, 2009
NOi dated June 29, 2009
DAQE-451 -94 dated June 7, 1994
ADMINISTRATIVE CODING
The following information is for UDAQ internal classification use only:
Sanpete County
CDSB
Attainment Area, NSPS (Part 60), Title V (Part 70) Area source
DAQE-AN010035001 l-10
Page 8
ACRONYMS
The following lists commonly used acronyms and associated translations as they apply to this document:
40CFR
AO
BACT
CAA
CAAA
CDS
CEM
CEMS
CPR
co
COM
DAQ
DAQE
EPA
FDCP
HAP or HAPs
ITA
LB/HR
MACT
MMBTU
NAA
NAAQS
NESHAP
NOi
NO x
NSPS
NSR
PM10
PM2.s
PSD
PTE
R307
R307-401
S02
Title IV
Title V
TPY
UAC
UDAQ
voe
Title 40 of the Code of Federal Regulations
Approval Order
Best Available Control Technology
Clean Air Act
Clean Air Act Amendments
Classification Data System (used by EPA to classify sources by size/type)
Continuous emissions monitor
Continuous emissions monitoring system
Code of Federal Regulations
Carbon monoxide
Continuous opacity monitor
Division of Air Quality (typically interchangeable with UDAQ)
This is a document tracking code for internal UDAQ use
Environmental Protection Agency
Fugitive Dust Control Plan
Hazardous air pollutant(s)
Intent to Approve
Pounds per hour
Maximum Achievable Control Technology
Million British Thermal Units
Nonattainment Area
National Ambient Air Quality Standards
National Emission Standards for Hazardous Air Pollutants
Notice of Intent
Oxides of nitrogen
New Source Performance Standard
New Source Review
Particulate matter less than 10 microns in size
Particulate matter less than 2.5 microns in size
Prevention of Significant Deterioration
Potential to Emit
Rules Series 307
Rules Series 307 -Section 401
Sulfur dioxide
Title IV of the Clean Air Act
Title V of the Clean Air Act
Tons per year
Utah Administrative Code
Utah Division of Air Quality (typically interchangeable with DAQ)
Volatile organic compounds
. .
~
SITE ID# AND PROJEC1 #:
COMPANY NAME:
REGARDING:
NSR010035001 l-10
Redmond Minerals Incorporated: Bentonite (C lay)
Processing Plant
Modification to Approval Order DAQE-451-94 to Change
Equipment and Separate Sources
THE ATTACHED DOCUMENT IS CATEGORIZED AS: (PLEASE CHOOSE ONE)
NEWSPAPER NOTICE (N N) Office Tech signs cover letter of Newspaper Notice
INTENT TO APPROVE (ITA) Cover letter and IT A signed by associated Section Manager
Electronic Copy of ITA sent to Ron Reece
1._ APPROVAL ORDER (AO) l Copy of purple sheet and cover letter of AO to Teri Weiss
EXPERIMENTAL AO Copy of purple sheet and cover letter of AO to Teri Weiss
CORRESPONDENCE Signatory varies
SOIL REMEDIATION If associated fee. send copy of purple sheet and letter to Teri Weiss
SALES TAX EXEMPTION (TAX)
SMALL SOURCE EXEMPTION Copy of purple sheet and letter to Teri Weiss
EM ISSIONS BANKING LETTER Copy of letter to Camron Harry
NAME CHANGE Copy of purple sheet and letter to Teri Weiss
COPIES TO BE SENT TO THE FOLLOWING PARTIES: (PLEASE CHECK AS THEY APPLY)
(Manila File Folder (worRmg ile) J ~ ,.-Greem; Folder _I
keal~menUsee letter for which) ~ EPA -Mike Owens
Compliance (associated Section Manager) J Finance -Teri Weiss
Name Change Letters: Brett Wilding. Utah State Tax Commission, Technical Research Unit Deborah McMurtrie Susan Weisenberg Dave Beatty
Offsets Used? Enter final Name Change Letters in /engineer/aoname Copy of document(s) to Camron Harry
Copy To: Enter in /engineer/aocond & in AO Log:
(AOs, AO not needed, Replacement in Kind)
NEWSPAPER NOTICE -COPIES TO: PSD PROJECTS:
Cities, Counties, Gov. Agencies, & etc./& a copy of Copy the NOi, Engineering Review, ITA, NOTICE & AO
Public Official letter with self-addressed envelope
Send lo:
E-Mail To: [e-mail], Jodie Swanson, Lori Mike Owens, EPA
Walker, Debbie Obemdorfer, Bill Sinclair, Beverly Don Banks, Bureau of Land Management
Rasmussen & Jen Burge, Donna Spangler. Ron Chris Hocket, U.S. Forest Service
Reece, and Kelly Beck Chris Shaver, National Park Service
E-Mail COQ)'. & Fax lo News12a12er Agencies TITLE V: Check w/ NSR Engineer for which document(s) to be copied.
REVIEWED BY AND DOCUMENT SIGN OFF DATES:
Completeness determination
Modeling review ofITA
Peer review of project
Section Manager sign off
Branch Manager sign off
July 28, 2010
September I, 2010
August 10, 2010
September 1, 20 l 0
1Z'-v~/tf ,,;i
NandoMeli
Timothy Andrus
Reginald Olsen
@
(ii'
~
SITE ID # AND PROJECl #:
COMPANY NAME:
REGARDING:
N0100350011-10
Redmond Minerals Incorporated: Bentonite (Clay)
Processing Plant
Modjfication to Approval Order DAQE-451-94 to Change
Equipment and Separate Sources
THE ATTACHED DOCUMENT IS CATEGORIZED AS: (PLEASE CHOOSE ONE)
~ ~PER NOTICE <NN) 1 Office Tech signs cover letter of Newspaper Notice
'1 INTENTrTO AP.~RO\IE (R'A)__j Cover letter and IT A signed by associated Section Manager
Electronic Copy of IT A sent to Ron Reece
APPROVAL ORDER (AO) Copy of purple sheet and cover letter of AO to Teri Weiss
EXPERIMENTAL AO Copy of purple sheet and cover letter of AO to Teri Weiss
CORRESPONDENCE Signatory varies
SOIL REMEDI ATION If associated fee, send copy of purple sheet and letter to Teri Weiss
SALES TAX EXEMPTION (TAX)
SMALL SOURCE EXEMPTION Copy of purple sheet and letter to Teri Weiss
EMISSIONS BANKING LETIER Copy of letter to Camron Harry
NAME CHA GE Copy of pu rp le sheet and letter to Teri Weiss
COPIES TO BE SENT TO THE FOLLOWING PARTIES: (PLEASE CHECK AS THEY APPLY)
~" ' {Manila File Folder (worl<ing ~e J Greens Folder
,/ 'Health Department (see letter for which) f EPA - Mike Owens -£( Compliance (associated Section Manager) + Finance -Teri Weiss
Name Change Letters: Brett Wilding, Utah State Tax Commission, Technical Research Unit Deborah McMurtrie Susan Weisenberg Dave Beatty
Offsets Used?
Copy of document(s) to Camron Harry Enter final Name Change Letters in /engineer/aoname
Copy To: Enter in /engineer/aocond & in AO Log:
(AOs, AO not needed, Replacement in Kind)
NEWSPAPER NOTICE -COPIES TO: _:J PSD PROJECTS: v V Cities, Counties, Gov. Agencies, & etc./& a copy of Copy the NOi, Engineering Review, !TA, NOTICE & AO
I...; Vrublic Offi cial letter with self-addressed envelope
Send to:
E-Mail To: [e-mail], Jodie Swanson, Lori Mike Owens, EPA
Walker, Debbie Obemdorfer, Bill Sinclair, Beverly Don Banks, Bureau of Land Management
Rasmu ssen & Jen Burge, Donna Spangler, Ron Chris Hocket, U.S. Forest Service
Reece, and Kelly Beck Chris Shaver, National Park Service
E-Mail COQY & Fax to News12a12er Agencies TITLE V: Check w/ NSR Engineer for whi ch document(s) to be copied.
REVIEWED BY AND DOCUMENT SIGN OFF DATES:
Completeness determination
Modeling review of IT A
Peer review of project
Section Manager sign off
Branch Manager sign off
July 28, 2010
August 10, 2010
er///?t:l~
Nando Meli
Timothy Andrus
Reginald Olsen
:
~ Department of
Environmental Quality
Amanda Smith
Exerntive Director
FILE COPY
State of Utah DIVISION OF AIR QUALITY
GARY R. HERBERT
Governor
GREG BELL
Lieutenant Governor
September 2, 20 l 0
Mike Forbush
Redmond Minerals Incorporated
6005 North 100 West
PO Box 219
Redmond, UT 84652
Dear Mr. Forbush:
Cheryl Heying ·
Director
DAQE-IN010035001 l-10
Re: Intent to Approve: Modification to Approval Order DAQE-451-94 to Change Equipment and
Separate Sources
Project Number: N010035-0011
The attached document is the Intent to Approve for the above-referenced project. The Intent to Approve
is subject to public review. Any comments received shall be considered before an Approval Order is
issued. The Division of Air Quality is authorized to charge a fee for reimbursement of the actual costs
incurred in the issuance of an Approval Order. An invoice will follow upon issuance of the final
Approval Order.
Future correspondence on this Intent to ·Approve should include the engineer's name as well as the DAQE
number as shown on the upper right-hand comer of this letter. The project engineer for this action is Mr.
Alan Humpherys, who may be reached at (801 ) 536-4142.
Sincerely,
~:d,;#..,,,..----
New Source Review Section
TRA:AH:sa
cc: Central Utah Health Department
195 North 1950 West• Salt Lake City. UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone (801 ) 536-4000 • Fax [phone] • T.D.D. (801 ) 536-4414
www.deq.utnh.gov
Printed on 100% recycled paper
STATE OF UTAH
Department of Environmental Quality
Division of Air Quality
INTENT TO APPROVE: Modification to Approval Order
DAQE-451-94 to Change Equipment
and Separate Sources
Prepared by: Mr. Alan Humpherys, Engineer
Phone: [phone]
. Email: [e-mail]
INTENT TO APPROVE NUMBER
DAQE-IN0100350011-10
Date: September 2, 2010
Redmond Minerals Incorporated
Bentonite (Clay) Processing Plant
Source Contact:
Mr. Mike Forbush, Engineer
Phone: [phone]
Timothy R. Andrus, Manager
New Source Review Section
Utah Division of Air Quality
ABSTRACT
Redmond Minerals Inc. has requested a modification to their AO DAQE-451-94 dated June 7, 1994 to
change equipment and move the clay mining operations to a different AO. The previous AO had several
pieces of equipment that are no longer on site. This equipment will be removed, and the capacity of the
remaining equipment will be included with this AO. Redmond Minerals, Inc. operates a salt processing
plant on the same property. This AO will include the clay processing plant. Another AO will be issued
for the salt mining, the clay mining, and the salt processing plant. A modeling analysis was performed for
both the salt and the clay plants. Results are contained in DAQE-MN0106750006-10.
Sanpete County is an attainment area of the NAAQS for all pollutants. NSPS Subpart A, Subpart 000,
and Subpart UUU regulations apply to this source. NESHAP and MACT regulations do not apply to this
source. Title V of the 1990 Clean Air Act applies to this source, and this source is considered a Title V
Area Source.
Emissions previously calculated for the facility included tailpipe emissions from mobile equipment. The
emissions from mobile sources were not included in this AO. Due to the removal of the clay mining
activities, the additional equipment, and the removal of mobile source emissions, the potential emissions,
in tons per year, will change as follows: PM10 -17.51 (which includes PM25), PM2.5 + 0.38 (not ·
previously accounted for), NO, -2.27, S02 -0.29, CO -0.30, VOC -0.22.
The changes in emissions will result in the following, in tons per year, potential to emit totals: PM10 =
2.39 (which includes PM25), PM25 = 0.38, NOx = 1.43, S02 = 0.01 , CO= 1.20, VOC = 0.08.
The NOi for the above-referenced project has been evaluated and has been found to be consistent with the
requirements of UAC R307. Air pollution producing sources and/or their air control facilities may not be
constructed, installed, established, or modified prior to the issuance of an AO by the Executive Secretary
of the Utah Air Quality Board.
A 30-day public comment period will be held in accordance with UAC R307-401-7. A notification of the
intent to approve will be published in the Manti Messenger/Ephraim Enterprise on September 9, 2010.
During the public comment period the proposal and the evaluation of its impact on air quality will be
available for the public to review and provide comment. If anyone so requests a public hearing, it will be
held in accordance with UAC R307-401-7. The hearing will be held as close as practicable to the
location of the source. Any comments received during the public comment period and the hearing will be
evaluated. The proposed conditions of the AO may be changed as a result of the comments received.
Name of Permittee:
Redmond Minerals Incorporated
6005 North 100 West
PO Box 219
Redmond, UT 84652
Permitted Location:
Bentonite (Clay) Processing Plant
7000 North 100 West
Redmond
Sanpete County, UT 84652
UTM coordinates:
SIC code:
424,800 m Easting, 4,323,250 m Northing, UTM Zone 12
1459 (Clay, Ceramic, & Refractory Minerals, NEC)
DAQE-IN010035001 l-10
Page 3
I.l
I.2
I.3
I.4
I.5
I.6
I.7
II.A
II.A. l
II.A.2
II.A.3
II.A.4
Section I: GENERAL PROVISIONS
All definitions, terms, abbreviations, and references used in thi s 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]
The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
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-l]
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 Executive Secretary or Executive Secretary'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]
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 Executive Secretary 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]
The owner/operator shall comply with UAC R307-107. General Requirements: Unavoidable
Breakdowns. [R307-107]
The owner/operator shall comply with UAC R307-150 Series. Inventories, Testing and Monitoring.
[R307-150]
Section II: SPECIAL PROVISIONS
The approved installations shall consist of the following equipment:
Bentonite (Clay) Processing Plant
One (1) Primary System Crusher
(Excell Crusher)
Capacity: 50 tph
One (1) Roll Crusher
Capacity: 50 tph
One (1) Elevator
Capacity: 50 tph
DAQE-INO 100350011-10
Page 4
II.AS
II.A.6
II.A.7
II.A.8
II.A.9
II.A. IO
11.B
II.B.l
II.B. l.a
II.B. l.b
II.B. l.b. l
II.B.l.c
II.B. l.c. l
One (1) Screen
Capacity: 50 tph
Clay Processing Plant Baghouse
Capacity: 3,015 ACFM
One (1) Clay Mill Dryer
Capacity: 40 MMBTU/hr
Fuel: Natural Gas
Dryer Baghouse
Capacity: 20,735 ACFM
Various Conveyors
Various Storage Bins
Requirements and Limitations
The Clay Processing Plant shall be subject to the following
The owner/operator shall notify the Executive Secretary in writing when the installation of the
equipment listed in this AO has been completed and is operational. To ensure proper credit
when notifying the Executive Secretary, send your correspondence to the Executive Secretary,
attn: Compliance Section.
If the owner/operator has not notified the Executive Secretary in writing within 18 months from
the date of this AO on the status of the installation, the Executive Secretary shall require
documentation of the continuous installation of the operation. If a continuous program of
installation is not proceeding, the Executive Secretary may revoke the AO. [R307-401-18]
The owner/operator shall not process more than 30,000 tons of clay per rolling 12-month
period in the clay processing plant. [R307-401-8]
To determine compliance with a rolling 12-month total, the owner/operator shall calculate a
new 12-month total by the twentieth day of each month using data from the previous 12
months. Records of processing shall be kept for all periods when the plant is in operation.
Processing shall be determined by sales records and/or volumetric survey. The records of
processing shall be kept on a daily basis. [R307-401-8]
Unless otherwise specified in this AO, the owner/operator shall not allow visible emissions
from any stationary source on site to exceed 20 percent opacity. [R307-201-3]
Unless otherwise specified in this AO, opacity observations of emissions from stationary
sources shall be conducted according to 40 CPR 60, Appendix A, Method 9. [R307-201-3]
DAQE-IN010035001 l-10
Page 5
II.B.2
II.B.2.a
II.B.2.a.l
II.B.3
II.B.3.a
II.B.3.b
II.B.3.c
II.B.3.d
11.B.4
II.B.4.a
11.B.4.a. l
II.B.4.b
II.B.4.b.l
The Clay Mill Dryer shall be subject to the following
The Clay Mill Dryer shall not operate more than two hours per day. [R307-401-8]
Records of operation shall be kept for all periods when the plant is in operation. Hours of
operation shall be determined by supervisor monitoring and maintaining of an operations log.
[R307-401-8]
All Baghouses and Enclosures on site shall be subject to the following
The owner/operator shall not allow visible emissions from any building or baghouse on site to
exceed 7 percent opacity. [R307-401-8]
A manometer or magnehelic pressure gauge shall be installed on each baghouse on site to
measure the differential pressure drop. The static pressure differential across each baghouse
shall be maintained according to the manufactures' specifications. The pressure gauge shall be
located such that an inspector/operator can safely read the indicator at any time. The reading
shall be accurate to within plus or minus 0.5 inches water column. The instrument shall be
calibrated according to the manufactures' instructions annually. The differential pressure drop
shall be recorded on a monthly basis. [R307-401-8]
The Clay Processing Plant Baghouse shall control process streams from the Clay Processing
Plant. [R307-401-8]
The Dryer Baghouse shall control process·streams from the Clay Mill Dryer. [R307-401-8]
All Haul Roads and Fugitive Dust Sources on site shall be subject to the following
The owner/operator shall not allow visible emissions from haul roads and fugitive dust sources
on site to exceed 20 percent opacity at all times. [R307-205-4]
Visible emission determinations for fugitive dust emissions from haul-road traffic and mobile
equipment in operational areas shall use procedures similar to Method 9. The normal
requirement for observations to be made at 15-second intervals over a six-minute period,
however, shall not apply. Visible emissions shall be measured at the densest point of the plume
but at a point not less than 1/2 vehicle length behind the vehicle and not less than 1/2 the height
of the vehicle. [R307-205-4]
The owner/operator shall treat all unpaved haul roads and operational areas on site with water
or salt brine to maintain opacity limits listed in this AO. The owner/operator may stop
treatment when the temperature is below freezing. [R307-401-8]
Records of haul road treatment shall be kept for all periods when the plant is in operation. The
records shall include the following items:
A. Date and time treatments were made
DAQE-IN01003500I l-10 ,
Page 6
II.B.4.c
11.B.4.d
11.B.5
11.B.5.a
11.B .5.b
II.B.5.c
11.B .5.c. l
II.B.5.c.2
B. Number of treatments made, dilution ratio, and quantity of water or brine applied
C. Rainfall amount received, if any
D. Records of temperature, if the temperature is below freezing. [R307-401-8]
The outside radial adjustable stackers shall be operated in the following manner:
A. The drop distance to the pile is 3.0 feet or less, except for initial pile building.
B. For initial storage pile building, the stacker shall be lowered to the minimum height
and a fabric drop chute shall be used until the pile is large enough that the maximum
drop distance can be maintained.
C. Operation of the stacker system shall be temporarily discontinued whenever the wind
velocity is 15 mph or greater. A hand-held wind velocity meter or better shall be
maintained on site, and used in determining the times when operation of the stacker
system is discontinued. [R307-401-8]
The owner/operator shall comply with all applicable requirements of R307-205 for Fugitive
Emission and Fugitive Dust sources on site. [R307-205]
All clay processing equipment on site subject to NSPS 000 shall comply with the
following
All crushers and screens processing clay on site shall be contained in a building. [R307-401-8]
The owner/operator shall not allow visible emissions from any unenclosed conveyor transfer
point on site to exceed 10 percent opacity. [40 CFR 60 Subpart 000]
Within 60 days after achieving the maximum production rate but not later than 180 days after
initial startup, the owner/operator shall conduct an initial performance test for all crushers,
screens, and conveyor transfer points on site manufactured after August 31 , 1983. Performance
tests shall meet the limitations specified in Table 2 to Subpart 000 for stack emissions and
Table 3 to Subpart 000 for fugitive emissions. Records of initial performance tests shall be
kept and maintained on site for the life of the equipment. [ 40 CFR 60 Subpart 000]
Initial performance tests for fugitive emissions limits shall be conducted according to 40 CFR
60.675(b) for stack emission limits and 40 CFR 60.675(c) for fugitive emission limits. The
owner or operator may use methods and procedures specified in 40 CFR 60.675(e) as
alternatives to the reference methods and procedures specified in 40 CFR 60.675(b) and 40
CFR 60.675(c). [40 CFR 60 Subpart 000]
The owner/operator shall submit written reports to the Executive Secretary of the results of all
performance tests conducted to demonstrate compliance with the standards set forth in 40 CFR
60.672. [ 40 CFR 60 Subpart 000]
DAQE-IN010035001 l-10
Page 7
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), UUU: Calciners/Dryers in Mineral Industr
NSPS (Part 60), A: General Provisions
NSPS (Part 60), 000: Nonmetallic Mineral Processing Pints
PERMIT HISTORY
The final AO will be based on the following documents:
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Supersedes
Additional Information dated June 30, 2010
Additional Information dated June 9, 2010
Additional Information dated June 1, 2010
Additional Information dated August 10, 2009
Additional Information dated July 27, 2009
NOi dated June 29, 2009
DAQE-451 -94 dated June 7, 1994
ADMINISTRATIVE CODING
The following information is for UDAQ internal classification use only:
Sanpete County
CDSB
Attainment Area, NSPS (Part 60), Title V (Part 70) Area source
DAQE-IN010035001 l-10
Page 8
ACRONYMS
The following lists commonly used acronyms and associated translations as they apply to this document:
40CFR
AO
BACT
CAA
CAAA
CDS
CEM
CEMS
CFR
co
COM
DAQ
DAQE
EPA
FDCP
HAPorHAPs
ITA
LB/HR
MACT
MMBTU
NAA
NAAQS
NESHAP
NOI
NOx
NSPS
NSR
PM10
PM2.s
PSD
PTE
R307
R307-401
S02
Title IV
Title V
TPY
UAC
UDAQ
voe
Title 40 of the Code of Federal Regulations
Approval Order
Best Available Control Technology
Clean Air Act
Clean Air Act Amendments
Classification Data System (used by EPA to classify sources by size/type)
Continuous emissions monitor
Continuous emissions monitoring system
Code of Federal Regulations
Carbon monoxide
Continuous opacity monitor
Division of Air Quality (typically interchangeable with UDAQ)
This is a document tracking code for internal UDAQ use
Environmental Protection Agency
Fugitive Dust Control Plan
Hazardous air pollutant(s)
Intent to Approve
Pounds per hour
Maximum Achievable Control Technology
Million British Thermal Units
Nonattainment Area
National Ambient Air Quality Standards
National Emission Standards for Hazardous Air Pollutants
Notice of Intent
Oxides of nitrogen
New Source Performance Standard
New Source Review
Particulate matter less than 10 microns in size
Particulate matter less than 2.5 microns in size
Prevention of Significant Deterioration
Potential to Emit
Rules Series 307
Rules Series 307 -Section 40 l
Sulfur dioxide
Title IV of the Clean Air Act
Title V of the Clean Air Act
Tons per year
Utah Administrative Code
Utah Division of Air Quality (typically interchangeable with DAQ)
Volatile organic compounds
State of Utah
GARY R. HERBERT
Governor
GREG BELL
Lieutenant Governor
September 2, 2010
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF AIR QUALITY
Cheryl Heying
Director
Manti Messenger/Ephraim Enterprise
Legal Advertising Dept
35 S Main
Manti, UT 84642
RE: Legal Notice of Intent to Approve
DAQE-NN010035001 l-10
This letter will confirm the authorization to publish the attached NOTICE in the Manti
Messenger/Ephraim Enterprise on September 9, 2010.
Please mail the invoice and affidavit of publication to the Utah State Department of Environmental
Quality, Division of Air Quality, P.O. Box 144820, Salt Lake City, Utah 84114-4820.
Sincerely,
Sharon Anderson
Office Technician
Utah Division of Air Quality
Enclosure
cc: Six County Association of Governments
Sanpete County
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]
,u,,nu rlol"I .,,,.,1,, nnu
DAQE-NN0100350011-10
Page 2
NOTICE
A Notice oflntent for the following project submitted in accordance with §R307-401-1, Utah
Administrative Code (UAC), has been received for consideration by the Executive Secretary, Utah Air
Quality Board:
Company Name:
Location:
Project Description:
Redmond Minerals Incorporated
Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -7000 North
100 West, Redmond, Sanpete County, UT, Sanpete County
Redmond Minerals Inc . has requested a modification to their Approval Order
(AO) DAQE-451-94 dated June 7, 1994 to change equipment and move the clay
mining operations to a different AO. The previous AO had several pieces of
equipment that are no longer on site. This equipment will be removed, and the
capacity of the remaining equipment will be included with this AO. Redmond
Minerals, Inc. operates a salt processing plant on the same property. This AO will
include the clay processing plant. Another AO will be issued for the salt mining,
the clay mining, and the salt processing plant. A modeling analysis was performed
for both the salt and the clay plants. Results are contained in DAQE-
MN0106750006-10.
Sanpete County is an attainment area of the National Ambient Air Quality
Standards (NAAQS) for all pollutants. New Source Performance Standard
(NSPS) Subpart A, Subpart 000, and Subpart UUU regulations apply to this
source. National Emission Standards for Hazardous Air Pollutants (NESHAP) and
Maximum Achievable Control Technology (MACT) regulations do not apply to
this source. Title V of the 1990 Clean Air Act applies to this source, and this
source is considered a Title V Area Source.
Emissions previously calculated for the facility included tailpipe emissions from
mobile equipment. The emissions from mobile sources were not included in this
AO. Due to the removal of the clay mining activities, the additional equipment,
and the removal of mobile source emissions, the potential emissions, in tons per
year, will change as follows: PM10 -17.51 (which includes PM25), PM2_5 + 0.38
(not previously accounted for), NOx -2.27, S02 -0.29, CO -0.30, VOC -0.22.
The changes in emissions will result in the following, in tons per year, potential to
emit totals: PM10 = 2.39 (w hich includes PM2_5), PM2_5 = 0.38, NOx = 1.43, S02 =
0.01, co= 1.20, voe= 0.08.
The completed engineering evaluation and air quality impact analysis showed that the proposed project
meets the requirements of federal air quality regulations and the State air quality rules. The Executive
Secretary intends to issue an AO pending a 30-day public comment period. The project proposal, estimate
of the effect on local air quality and draft AO are available for public inspection and comment at the Utah
Division of Air Quality, 195 North 1950 West, Salt Lake City, UT 84114-4820. Written comments
received by the Division at this same address on or before October 9, 2010 will be considered in making
the final decision on the approval/disapproval of the proposed project. Email comments will also be
accepted at [e-mail]. If anyone so requests to the Executive Secretary at the Division in
writing within 15 days of publication of this notice, a hearing will be held in accordance with R307-401-7,
UAC.
Date of Notice: September 9, 2010
******************************* ******************************************************************** * P. 01 * * TRANSACTION REPORT * * · SEP-02-2010 THU 08:38 AM *
* * * FOR: DAQ 8015364099 *
* * * * * SEND *
* * * DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP *
* * * SEP-02 08:37 AM 914358351493 3' 0311 4 FAX TX OK (02) 561 *
* * * * * TOTAL : 3M 3S PAGES: 4 *
* * *********t******************************************************************************************
FAX COVER SHEET
' UTAH DIVISION OF AIR QUALITY
(NEW SOURCE REVIEW SECTION)
150 North 1950 West
P. 0. Box 144820
. Salt Lake City, Utah 84114-4820
FAX: (80t) 536-4099
CONFIRMATION: [phone]
FROM: Sharon Anderson
Office Technician
PHONE: [phone]
DA TE: September 2, 2010
AGENCY/FIRM: Manti Messenger
ATIENTION: Legal Advertising Department
PHONE: [phone]
FAX NUMBER: 435-835-1493
SUBJECT: Redmond Minerals Incorporated
(Clay Processing Plant)
COMMENTS: Hard Copy to Follow
Number of Pages to Follow: .1
Date Logged: 9/2110
Date Faxed: 9/2/10
Time: 8:15 AM
Initials: SA
NEW~·
!, '
FAX COVER SHEET
UTAH DIVISION OF AIR QUALITY
(NEW SOURCE REVIEW SECTION)
150 North 1950 West
P. 0. Box 144820
Salt Lake City, Utah 84114-4820
FAX: [phone]
CONFIR1\1ATION: [phone]
FROM:
PHONE:
DATE:
Sharon Anderson
Office Technician
[phone]
September 2, 2010
AGENCY /FIRM: Manti Messenger
ATTENTION:
PHONE:
FAX NUMBER:
SUBJECT:
COMMENTS:
Legal Adve1tising Department
435-835-424 l
435-835-1493
Redmond Minerals Incorporated
(Clay Processing Plant)
Hard Copy to Follow
Number of Pages to Follow: ~
Date Logged: 9/2/10 Time: 8:15 AM
Initials: SA Date Faxed: 9/2/10
NEW:~
Sharon Ander~on -Re: Legal Notic
9, 2010
be Published in the Manti Messent
From: Lloyd Call <[e-mail]>
To: Sharon Anderson <[e-mail]>
Date: 9/2/2010 8:14 AM
Pagel of 2
phraim Enterprise on September
Subject: Re: Legal Notice to be Published in the Manti Mes~enger/Ephraim Enterprise on September 9, 2010
received your notice-!
On Thu, Sep 2, 2010 at 8:07 AM, Sharon Anderson <sharonanderson @utah.gov> wrote:
Redmond Minerals Inc. (Clay Processing Plant)
Please publish the following Notice on September 9, 2010.
If you can, please reply to this email to confirm receipt of this request.
Thank you.
DAQE-NN010035001 l-10
September 2, 2010
Manti Messenger/Ephraim Enterprise
Legal Advertising Dept
35 S Main
Manti, UT 84642
RE: Legal Notice of Intent to Approve
This letter will confirm the authorization to publish the attached NOTICE in the Manti Messenger/Ephraim
Enterprise on September 9, 2010.
Please mail the invoice and affidavit of publication to the Utah State Department of Environmental Quality, Division
of Air Quality, P.O. Box 144820, Salt Lake City, Utah 84114-4820.
Sincerely,
Sharon Anderson
Office Technician
Utah Division of Air Quality
Enclosure
cc: Six County Association of Governments
Sanpete County
NOTICE
A Notice of Intent for the following project submitted in accordance with §R307-401-l, Utah Administrative Code
(UAC), has been received for consideration by the Executive Secretary, Utah Air Quality Board:
Company Name: Redmond Minerals Incorporated
Location: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -7000 North
100 West, Redmond, Sanpete County, UT, Sanpete County
Project Description: Redmond Minerals Inc. has requested a modification to their Approval
Order (AO) DAQE-451-94 dated June 7, 1994 to change equipment and move the clay mining
operations to a different AO. The previous AO had several pieces of equipment that are no
longer on site. This equipment will be removed, and the capacity of the remaining equipment
will be included with this AO. Redmond Minerals, Inc. operates a salt processing plant on the
same property. This AO will include the clay processing plant. Another AO will be issued for
the salt mining, the clay mining, and the salt processing plant. A modeling analysis was
performed for both the salt and the clay plants. Results are contained in DAQE-
MN0106750006-10.
Sanpete County is an attainment area of the National Ambient Air Quality Standards
(NAAQS) for all pollutants. New Source Performance Standard (NSPS) Subpart A, Subpart
000, and Subpart UUU regulations apply to this source. National Emission Standards for
file://C :\Documents and Settings\Sharonanderson\Local Settings\temp\XPgrpwise\4C7F5CF AEQDOMAIN ... 9/2/2010
Page 2 of 2
Hazardous . Pollutants (NESHAP) and Maximum ievable Control Technology (MACT)
regulations do not apply to this source. Title V of the 1990 Clean Air Act applies to this
source, and this source is considered a Title V Area Source.
Emissions previously calculated for the facility included tailpipe emissions from mobile
equipment. The emissions from mobile sources were not included in this AO. Due to the
removal of the clay mining activities, the additional equipment, and the removal of mobile
source emissions, the potential emissions, in tons per year, will change as follows: PM 10 -
17.51 (which includes PM2_5), PM2_5 + 0.38 (not previously accounted for), NOx -2.27, S02 -
0.29, co -o.30, voe -0.22.
The changes in emissions will result in the following, in tons per year, potential to emit totals:
PM10 = 2.39 (which includes PMi_5), PMi .s = 0.38, NOx = 1.43, S02 = 0.01, CO= 1.20, voe
= 0.08 .
The completed engineering evaluation and air quality impact analysis showed that the proposed project meets the
requirements of federal air quality regulations and the State air quality rules. The Executive Secretary intends to issue
an AO pending a 30-day public comment period. The project proposal, estimate of the effect on local air quality and
draft AO are available for public inspection and comment at the Utah Division of Air Quality, 195 North 1950 West,
Salt Lake City, UT 84114-4820. Written comments received by the Division at this same address on or before
October 9, 2010 will be considered in making the final decision on the approval/disapproval of the proposed project.
Email comments will also be accepted at ahumpherys@ utah.gov. If anyone so requests to the Executive Secretary at
the Division in writing within 15 days of publication of this notice, a hearing will be held in accordance with R307-
401-7, UAC.
Date of Notice: September 9, 2010
file ://C:\Documents and Settings\Sharonanderson\Local Settings\temp\XPgrpwise\4C7F5CFAEQDOMAIN... 9/2/2010
SIX COUNTY ASSOCIATI ON OF GOVERNMENTS
Sevier County Administration Building
250 North Main
P.O. Box 820
Richfield, Utah 84701
Telephone: ( 435) 893-0700
Fax: ( 435) 893-0701
OFFICE OF EXECUTIVE DIRECTOR
HOUSING SERVICES
COMMUNITY ASSISTANCE SERVICES
AGING/VOLUNTEER SERVICES
ADMINISTRATIVE SERVICES
ECONOMIC DEVELOPMENT DISTRICT
SIX COUNTY ASSOCIATION OF GOVERNMENTS
REVIEW r ·-··--L'Ti,.., :.-::~·A: · ' .·, n r. -·~ ·1
t Er 1it~~.-i~:·., . ·1· . · : , v f r -·-
' I
Date: September 9, 2010 SEP 1 3 2010
Applicant: Redmond Minerals Incorporated
Brief Description of Project: DAQE-NN0100350011-10 / DAQE-NN0106750006-10
Date Reviewed: September 8, 2010
(X) Reviewed, See Comment Below.
Comment: The project has been reviewed by the Six County Association of Governments
Executive Board, and they are in support of the project.
Juab • Millard • Piute • Sanpete • Sevier • Wayne
8 -3 1-10; s :16AM ;Redmond Miner a ls ;4355297 4 86
UTAH DIVISION OF AIR QUALITY
SOURCE PLAN REVIEW
Mike Forbush
Redmond Minerals Incorporated
6005 North 100 West
POBox219
Redmond, UT 84652
RE:
Review Engineer:
Date:
Notice of Intent Submitted:
Plant Contact:
·Phone Number:
Fax Number:
·•Source Location:
'
Project Number: N01003500I 1
Modification to Approval Order DAQE-451-94 to Change
Equipment and Separate Sources
Sanpete County; CDS B; Attainment Area, NSPS (Part
60), Title V (Part 70) Area Source
Mr. Alan Humpherys
August 19, 2010
June 29, 2009
Mike Forbush
[phone]
[phone]
7000 North 100 West, Redmond, Sanpete County, UT
Sanpete County
4,323,250 m Northing, 424,800 m Easting, UTM Zone 12
UTM Datum: NAD27
DAQ requests that a company/corporation official read the attached draft/proposed Plan Review with
Recommended.Approval Order Conditions. If this person does not understand or does not agree with the
conditions, the review engineer should be contacted within five days after receipt of the Plan Review. If
this person agrees with the Plan Review and Recommended Approval Order Conditions, this person
should sign below and return (FAX# [phone]) within 10 days after receipt of the conditions. If the
review engineer is not contacted within 10 days, the review engineer shall assume that the
company/corporation official agrees with this Plan Review and will process the Plan Review towards
final approval. A public comment period wil be required before the Approval Order can be issued.
(Signature & Date)
Engineering Review NSRO 100350011: Redmond Minerals lncorpordted: Bentonite (Clay) Processing Plant -Modification to
· Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 2010
Page 1
# 2/ 3
!
-UTAH DIVISION OF AIR QUALITY
SOURCE PLAN REVIEW
Mike Forbush
Redmond Minerals Incorporated
6005 North 100 West
PO Box 219
Redmond, UT 84652
RE:
Review Engineer:
Date:
Notice of Intent Submitted:
Plant Contact:
Phone Number:
Fax Number:
Source Location:
Project Number: N0100350011
Modification to Approval Order DAQE-451-94 to Change
Equipment and Separate Sources
Sanpete County; CDS B; Attainment Area, NSPS (Part
60), Title V (Part 70) Area Source
Mr. Alan Humpherys
August 19, 2010
June 29, 2009
Mike Forbush
[phone]
[phone]
7000 North 100 West, Redmond, Sanpete County, UT
Sanpete County
4,323,250 m Northing, 424,800 m Easting, UTM Zone 12
UTM Datum: NAD27
DAQ requests that a company/corporation official read the attached draft/proposed Plan Review with
Recommended Approval Order Conditions. If this person does not understand or does not agree with the
conditions, the review engineer should be contacted within five days after receipt of the Plan Review. If
this person agrees with the Plan Review and Recommended Approval Order Conditions, this person
should sign below and return (FAX # [phone]) within 10 days after receipt of the conditions. If the
review engineer is not contacted within 10 days, the review engineer shall assume that the
company/corporation official agrees with this Plan Review and will process the Plan Review towards
final approval. A public comment period will be required before the Approval Order can be issued.
Applicant Contact ____________________________ _
(Signature & Date)
Engineering Review NSRO I 003500 I I: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 20 I 0
Page I
ABSTRACT
Redmond Minerals Inc. has requested a modification to their AO DAQE-451-94 dated June 7, 1994 to
change equipment and move the clay mining operations to a different AO. The previous AO had several
pieces of equipment that are no longer on site. This equipment will be removed, and the capacity of the
remaining equipment will be included with this AO. Redmond Minerals, Inc. operates a Salt Processing
Plant on the same property. This AO will include the clay processing plant. Another AO will be issued
for the salt mining, the clay mining, and the salt processing plant. A modeling analysis was performed for
both the salt and the clay plants. Results are contained in DAQE-MNO 106750006-10.
Sanpete County is an attainment area of the NAAQS for all pollutants. NSPS Subpart A, Subpart 000,
and Subpart UUU regulations apply to this source. NESHAP and MACT regulations do not apply to this
source. Title V of the 1990 Clean Air Act applies to this source, and this source is considered a Title V
Area Source.
Emissions previously calculated for the facility included tailpipe emissions from mobile equipment. The
emissions from mobile sources were not included in this AO. Due to the removal of the clay mining
activities, the additional equipment, and the removal of mobile source emissions, the potential emissions,
in tons per year, will change as fo ll ows: PMt0 -17.51 , PM25 + 0.38 (not previously accounted for), NOx -
2.27, so2 -0.29, co -o.30, voe -0.22.
The changes in emissions will result in the fo llowing, in tons per year, potential to emit totals: PM10 =
2.39, PM2.5 = 0.38, NOx = 1.43 , S02 = 0.01 , CO = 1.20, VOC = 0.08.
SOURCE SPECIFIC DESIGNATIONS
Applicable Programs:
Attainment Area applies to Bentonite (Clay) Processing Plant
NSPS (Part 60), Subpart A: General Provisions applies to Bentonite (Clay) Processing Plant
NSPS (Part 60), Subpart 000: Nonmetallic Mineral Processing Plants applies to Clay Processing Plant
Baghouse
NSPS (Part 60), Subpart 000: Nonmetallic Mineral Process ing Plants applies to One (1) Primary
System Crusher
NSPS (Part 60), Subpart 000: Nonmetallic Mineral Processi ng Plants applies to One (1) Roll Crusher
NSPS (Part 60), Subpart 000: Nonmetallic Mineral Processing Plants applies to One (1) Screen
NSPS (Part 60), Subpart 000: Nonmetallic Mineral Processing Plants applies to Various Conveyors
NSPS (Part 60), Subpart 000: Nonmetallic Mineral Processing Plants applies to Various Storage Bins
NSPS (Part 60), Subpart UUU: Calciners/Dryers in Mineral Industries applies to Dryer Baghouse
NSPS (Part 60), Subpart UUU: Calciners/Dryers in Mineral Industries applies to One (1) Clay Mill
Dryer
Title V (Part 70) Area Source applies to Bentonite (Clay) Processing Plant
Engineering Review NSRO I 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 2010
Page 2
Permit History:
When issued, the approval order shall supersede or will be based on the following documents:
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Supersedes
Additional Information dated June 30, 2010
Additional Information dated June 9, 2010
Additional Information dated June 1, 2010
Additional Information dated August 10, 2009
Additional Information dated July 27, 2009
NOi dated June 29, 2009
DAQE-451-94 dated June 7, 1994
SUMMARY OF NOTICE OF INTENT INFORMATION
Description of Proposal:
Changes: Redmond Minerals Inc. has requested to add various pieces of clay processing equipment.
The current permit for this site includes a clay mining operation and a clay processing plant. Redmond
Minerals Inc. also operates a salt mining operation and a salt processing plant under site ID: 10675. The
clay mining operations included in this AO wi ll be moved to the other AO at this location. These two
sites are considered one source even though they have two different site numbers. They are under
common control/ownership, are contiguous or adjacent, have ·the same SIC code (1479 -salt & 1459 -
clay).
A modeling analysis was performed for the entire source (both salt and clay plants). The AO for each site
will be modified, and both permits will be processed at the same time. Redmond Minerals Inc. has
requested that this site include the clay processing plant. Site 10675 will include the salt mining, the clay
mining, and the salt processing plant.
Summary of Emission Changes and Totals:
The emissions listed below are an estimate of the total potential emissions from the source. Some
rounding of emissions is possible. All values given are in tons per year.
Estimated Criteria Pollutant Potential Emissions
Carbon Monoxide
Nitrogen Oxides
Particulate Matter -PM Io
Particulate Matter -PM2.s
Sulfur Dioxide
Volatile Organic Compounds
1.20 tons/yr
1.43 tons/yr
2.39 tons/yr
0.38 tons/yr
0.01 tons/yr
0.08 tons/yr
Engineering Review NSROI 00350011 : Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451 -94 to Change Equipment and Separate Sources
August 19, 20 I 0
Page 3
Review of Best Available Control Technology:
1. BACT review regarding Bentonite (Clay) Processing Plant -Source Wide
The clay processing plant consists of crushers, a screens, and conveyors. The plant is enclosed
in a building and controlled with a baghouse.
Clay is dried with a rotary dryer, and the rotary dryer is controlled by a baghouse.
BACT for the baghouses on site shall be a visible emission standard of 7 percent opacity.
BACT for the unpaved haul roads on site is treatment with salt brine to maintain a 20% opacity.
[Last updated August 10, 2010]
Modeling Results:
Modeling results are contained in DAQE-MN0 106750006-1 0. [Last updated August 3, 2010]
Engineering Review NSRO I 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 20 I 0
Page 4
I.l
1.2
1.3
I.4
1.5
1.6
1.7
RECOMMENDED APPROVAL ORDER CONDITIONS
The intent is to issue an air quality Approval Order (AO) authorizing the project with the following
recommended conditions and that failure to comply with any of the conditions may constitute a violation
of the order. The AO will be issued to and will apply to the following:
Name of Permittee:
Redmond Minerals Incorporated
6005 North 100 West
PO Box 219
Redmond, UT 84652
Permitted Location:
Redmond Minerals Incorporated:
Bentonite (Clay) Processing Plant
7000 North 100 West
Redmond
Sanpete County, UT 84652
UTM coordinates:
SIC code:
424,800 m Easting, 4,323 ,250 m Northing, UTM Zone 12
1459 (Clay, Ceramic, & Refractory Minerals, NEC)
Section I: GENERAL PROVISIONS
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]
The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
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]
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 Executive Secretary or Executive Secretary'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]
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 Executive
Secretary 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]
The owner/operator shall comply with UAC R307-107. General Requirements: Unavoidable
Breakdowns. [R307-l 07]
The owner/operator shall comply with UAC R307-l 50 Series. Inventories, Testing and
Monitoring. [R307-150]
Engineering Review NSROI 00350011 : Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 2010
Page 5
II.A
II.A. l
II.A.3
II.A.4
II.A.5
II.A.6
II.A.7
II.A.8
II.A.9
II.A. l 0
II.A.11
11.B
II.B. l
II .B.1 .a
Section II: SPECIAL PROVISIONS
The approved installations shall con sist of the following equipment:
Bentonite (Clay) Processing Plant
One (1) Primary System Crusher
(Excell Crusher)
Capacity: 50 tph
One (1) Roll Crusher
Capacity: 50 tph
One (1) Elevator
Capacity: 50 tph
One (1) Screen
Capacity: 50 tph
Clay Processing Plant Baghouse
Capacity: 3,015 ACFM
One (1) Clay Mill Dryer
Capacity: 40 MMBTU/hr
Fuel: Natural Gas
Dryer Baghouse
Capacity: 20,735 ACFM
Various Conveyors
Various Storage Bins
Requirements and Limitations
The Clay Processing Plant shall be subject to the following
The owner/operator shall notify the Executive Secretary in writing when the installation of the
equipment listed in this AO has been completed and is operational. To ensure proper credit
when notifying the Executive Secretary, send your correspondence to the Executive Secretary,
attn: Compli ance Section.
If the owner/operator has not notified the Executi ve Secretary in writing within 18 months from
the date of this AO on the status of the installation, the Executive Secretary shall require
documentation of the continuous installation of the operation. If a continuous program of
installation is not proceeding, the Executive Secretary may revoke the AO. [R307-401 -1 8]
Engi nee"ri ng Review NSRO J 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August I 9, 20 I 0
Page 6
II.B. l.b
Il.B. l.b. l
II.B. l .c
II.B. l .c. l
II.B.2
II.B.2.a
II.B.2.a. l
II.B.3
II.B.3.a
II.B.3.b
II.B.3.c
II.B.3.d
The owner/operator shall not process more than 30,000 tons of clay per rolling 12-month period
in the clay processing plant. [R307-401-8]
To determine compliance with a rolling 12-month total, the owner/operator shall calculate a new
12-month total by the twentieth day of each month using data from the previous 12 months.
Records of processing shall be kept for all periods when the plant is in operation. Processing
shall be determined by sales records and/or volumetric survey. The records of processing shall
be kept on a daily basis. [R307-401-8]
Unless otherwise specified in this AO, the owner/operator shall not allow visible emissions from
any stationary source on site to exceed 20 percent opacity. [R307-201-3]
Unless otherwise specified in this AO, opacity observations of emissions from stationary
sources shall be conducted according to 40 CFR 60., Appendix A, Method 9. [R307-201-3]
The Clay Mill Dryer shall be subject to the following
The Clay Mi 11 Dryer shall not operate more than 2 hours per day. [R307-401-8]
Records of operation shall be kept for all periods when the plant is in operation. Hours of
operation shall be determined by supervisor monitoring and maintaining of an operations log.
[R307-401-8]
All Baghouses and Enclosures on site shall be subject to the following
The owner/operator shall not allow visible emissions from any building or baghouse on site to
exceed 7 percent opacity. [R307-401-8]
A manometer or magnehelic pressure gauge shall be installed on each dust collector on site to
measure the differential pressure drop. The static pressure differential across each baghouse
shall be maintained according to the manufactures' specifications. The pressure gauge shall be
located such that an inspector/operator can safely read the indicator at any time. The reading
shall be accurate to within plus or minus 0.5 inches water column. The instrument shall be
calibrated according to the manufactures instructions annually. The differential pressure drop
shall be recorded on a monthly basis. [R307-401-8]
The Clay Processing Plant Baghouse shall control process streams from the Clay Processing
Plant. [R307-401-8]
The Dryer Baghouse shall control process streams from the Clay Mill Dryer. [R307-401-8]
Engineering Review NSRO I 00350011 : Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 2010
Page 7
11.B.4
11.B.4.a
11.B.4.a.1
11.B.4.b
11.B.4.b.1
11.B.4.c
11.B.4.d
11.B.5
II.B.5.a
II.B.5.b
All Haul Roads and Fugitive Dust Sources on site shall be su bject to the following
The owner/operator shall not allow visible emissions from haul roads and fugitive dust sources
on site to exceed 20 percent opacity at all times. [R307-205-4]
Visible emission determinations for fugitive dust emissions from haul-road traffic and mobile
equipment in operational areas shall use procedures similar to Method 9. The normal
requirement for observations to be made at 15-second intervals over a six-minute period,
however, shall not apply. Visible emissions shall be measured at the densest point of the plume
but at a point not less than 1/2 vehicle length behind the vehicle and not less than 1/2 the height
of the vehicle. [R307-205-4]
The owner/operator shall treat all unpaved haul roads and operational areas on site with water or
salt brine to maintain opacity li mits listed in this AO. The owner/operator may stop treatment
when the temperature is below freezing. [R307-401-8]
Records of haul road treatment shall be kept for all periods when the plant is in operation. The
records shall include the following items:
A. Date and time treatments were made
B. Number of treatments made, dilution ratio, and quantity of water or brine applied
C. Rainfall amount received, if any
D. Records of temperature, if the temperature is below freezing. [R307-401-8]
The outside radial adjustable stackers shall be operated in the following manner:
A. The drop distance to the pile is 3.0 feet or less, except fo r initial pile building.
B. For initial storage pile building, the stacker shall be lowered to the minimum height
and a fabric drop chute shall be used until the pile is large enough that the maximum
drop distance can be maintained.
C. Operation of the stacker system shall be temporarily di scontinued whenever the wind
velocity is 15 mph or greater. A hand held wind velocity meter or better shall be
maintained on site, and used in determining the times when operation of the stacker
system is discontinued. [R307-401-8]
The owner/operator shall comply with all applicable requirements ofR307-205 for Fugitive
Emission and Fugitive Dust sources on site. [R307-205]
All clav processing equipment on site subject to NSPS 000 shall comply with the
following
All crushers and screens processing clay on site shall be contained in a building or enclosure.
[R307-401-8]
The owner/operator shall not allow visible emissions from any unenclosed conveyor transfer
point on site to exceed 10 percent opacity. [40 CFR 60 Subpart 000]
Engineering Review NSRO I 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 2010
Page 8
11.B.5.c
11.B.5.c. l
II.B.5.c.2
Within 60 days after achieving the maximum production rate but not later than 180 days after
initial startup, the owner/operator shall conduct an initial performance test for all crushers,
screens, and conveyor transfer points on site manufactured after August 31, 1983. Performance
tests shall meet the limitations specified in Table 2 to Subpart 000 for stack emissions and
Table 3 to Subpart 000 for fugitive emissions. Records of initial performance tests shall be
kept and maintained on site for the life of the equipment. [40 CFR 60 Subpart 000]
Initial performance tests for fugitive emissions limits shall be conducted according to 40 CFR
60.675(b) for stack emission limits and 40 CFR 60.675(c) for fugitive emission limits. The
owner or operator may use methods and procedures specified in 40 CFR 60.675(e) as
alternatives to the reference methods and procedures specified in 40 CFR 60.675(b) and 40 CFR
60.675(c). [40 CFR 60 Subpart 000]
The owner/operator shall submit written reports to the Executive Secretary of the results of all
performance tests conducted to demonstrate compliance with the standards set·forth in 40 CFR
60.672. [40 CFR 60 Subpart 000]
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 thi s insta llation. 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), A: General Provis ions
NSPS (Part 60), 000: Nonmetallic Mineral Processing Plants
NSPS (Part 60), UUU: Calciners/Dryers in Mineral Industries
Engineering Review NSROI 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 20 I 0
Page 9
REVIEWER COMMENTS
The AO will be based on the following documents:
ls Derived From
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Is Derived From
Supersedes
Additional Information dated June 30, 2010
Additional Information dated June 9, 2010
Additional Information dated June 1, 2010
Additional Information dated August 10, 2009
Additional Information dated July 27, 2009
NOI dated June 29, 2009
DAQE-45 1-94 dated June 7, 1994
1. Comment on an item originating in regarding Bentonite (Clay) Processing Plant
NSPS UUU Notes: The Clay Mill Dryer is subject to NSPS UUU. This subpart has emission
limits, monitoring requirements, record keeping and repo1iing requirements contained in it.
Emission limits are found in 40 CFR 60.732, monitoring requirements are found in 40 CFR
60.734, and record keeping and reporting requirements are found in 40 CFR 60.735. It is the
owner/operator's responsibility to ensure compliance with these federa l requirements. [Last
updated August 4, 201 OJ
2. Comment on an item originating in regarding Bentonite (Clay) Processing Plant
Permit History: This permit will supersede:
DAQE-451-94 dated June 7, 1994, which replaced:
Approval Orders dated September 13 , 1993, and March 15 , 1990. [Last updated August 3, 2010]
3. Comment on an item originating in regarding Bentonite (Clay) Processing Plant
Salt and Clay Plants on Separate AO's: Redmond Minerals, Inc. operates the clay processing
plant at intermittent times. Redmond Minerals, Inc. wants the option to sell or lease this plant to
another company. This is the reason that a separate AO will be issued for the clay processing
plant. While both plants are owned by the same company, both the salt plant and clay plant
shall be considered one source. If control of the clay plant i transfeJTed to a different company,
the salt plant and the clay plant shall be considered separate sources.
The combined emissions from the salt plant and the clay plant are below major source
thresholds. If the source were to modify one of these plants, the emissions from all sources
would be evaluated to determine if the source would be considered a major source. [Last
updated August 3, 2010]
Engineering Review NSROI 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 20 I 0
Page 10
ACRONYMS
The following lists commonly used acronyms and their associated translations as they apply to this
document:
40 CFR
AO
BACT
CAA
CAAA
CDS
CEM
CEMS
CFR
co
COM
DAQ
DAQE
EPA
FDCP
HAP or HAPs
ITA
LB/HR
MACT
MMBTU
MMBTU/hr
NAA
NAAQS
NESHAP
NOi
NOx
NSPS
NSR
PM10
PM2.s
PSD
PTE
R307
R307-401
S02
Title IV
Title V
TPY
UAC
UDAQ
voe
Title 40 of the Code of Federal Regulations
Approval Order
Best Available Control Technology
Clean Air Act
Clean Air Act Amendments
Classification Data System (used by EPA to classify sources by size/type)
Continuous emissions monitor
Continuous emissions monitoring system
Code of Federal Regulations
Carbon monoxide
Continuous opacity monitor
Division of Air Quality (typically interchangeable with UDAQ)
This is a document tracking code for internal UDAQ use
Environmental Protection Agency
Fugitive Dust Control Plan
Hazardous air pollutant(s)
Intent to Approve
Pounds per hour
Maximum Achievable Control Technology
Million British Thermal Units
Million British Thermal Units per hour (heat input rate)
Nonattainment Area
National Ambient Air Quality Standards
National Emission Standards for Hazardous Air Pollutants
Notice of Intent
Oxides of nitrogen
New Source Performance Standard
New Source Review
Particulate matter less than IO microns in size
Particulate matter less than 2.5 microns in size
Prevention of Significant Deterioration
Potential to Emit
Rules Series 307
Rules Series 307 -Section 401
Sulfur dioxide
Title IV of the Clean Air Act
Title V of the Clean Air Act
Tons per year
Utah Administrative Code
Utah Division of Air Quality (typically interchangeable with DAQ)
Volatile organic compounds
Engineering Review NSRO I 00350011: Redmond Minerals Incorporated: Bentonite (Clay) Processing Plant -Modification to
Approval Order DAQE-451-94 to Change Equipment and Separate Sources
August 19, 2010
Page 11
DAQC-1467-19
Site ID 10035 (B1)
MEMORANDUM
TO: FILE — REDMOND MINERALS (CLAY PROCESSING PLANT) ,----
THROUGH: Rik Ombach, Minor Source Compliance Section Manager
FROM: Jared James, Environmental Scientist ýý
DATE: November 7, 2019
ciaectot
SUBJECT: _Bull Compliance Evaluation, Minor, Sanpete County,
INSPECTION DATE: November 1, 2019
SOURCE LOCATION: 7000 North 100 West, Sanpete
SOURCE CONTACT(S): Mike Forbush, Mine Engineer: 435-979-4629
[e-mail]
OPERATING STATUS: Temporarily down.
PROCESS DESCRIPTION: The bentonite pit is an open mine pit. A front-end-loader is used
to load raw bentonite onto haul trucks. The haul trucks dump the
material (about 98% pure) into a hopper that feeds a natural gas
fired rotary dryer. The dried material from the dryer is conveyed
to either an indoor or outside storage pile. If the material is to be
used soon it is stored in a partially enclosed building. If the
material is not to be used soon it is stored in an outside storage
pile and is sprayed with a salt/water solution, and used as needed.
The inside piles are fed to the feed bin by front-end loaders. The
product is then transported through a system by conveyors. The
processing of bentonite starts at a primary crusher and screen. It
is conveyed through two more screens and a secondary crusher.
All crushers and screens are controlled by baghouses. The
partially processed bentonite is then conveyed to one of two
Raymond mills. The kiln and Raymond mills are controlled by
separate baghouses. All screens, baggers, grinders, crushers and
kiln are enclosed in the bentonite processing building. The
fmished product is conveyed to outside storage silos for truck
loading or loaded onto trucks inside the building for shipment to
buyers, or bagged at one of two bagging lines. The bagging
process is controlled by a baghouse. The inside bulk truck
loading is done by a gravity feeder with four tube lines. Any
excess product can be stored in storage silos then loaded using a
desander worm loader.
DAQ-2019-020862 1
Lucia Mason <[e-mail]>
Fwd: Permit Revocation Request
2 messages
Alan Humpherys <[e-mail]>Wed, May 21, 2025 at 2:01 PM
To: Lucia Mason <[e-mail]>
Lucia,
Can you please process this AO revocation?
Site ID: 10035
Peer: Katie
Thanks,
Alan
---------- Forwarded message ---------
From: <[e-mail]>
Date: Wed, May 21, 2025 at 1:59 PM
Subject: Permit Revocation Request
To: <[e-mail]>
The following revocation has been requested
Recipient Data:
Time Finished: 2025-05-21 13:59:06 MDT
ResponseID: R_1wvIuSDrRf2T06J
Link to View Results: Click Here
URL to View Results: https://utahgov.iad1.qualtrics.com/apps/single-response-reports/reports/5_OJSlk9Y55EIb7AKmBZWUGR0guhan3W
RRh29nhDTygF3gwnm29_Ch7n22kGnRWEJt5BpVEtMyQxuem4PQmUXSLw2TWADaFQ7aKo24MgRFaE-tMw1VCbwx3TR46h2Vb4tRhxMCJ5yKH
n6H5ueDdrt7kfctschrHq5t6cdhxAuPiy3cVkUEjwQmd0K29Ss4m906LpqCNkCGxlKEK7Zh9dfQKOraN0ovqrBvhZ-fgCrZc0cB5PmeTFU4u1263UHMkwi7o
r663fjTfFPNX5UhrkpbO6pL5AVYTgUEUxAwtgjAEpdzvbCi1Y9rpapHmjq9v6tU1qR2K6MdZkW0CL3hKBYw
Response Summary:
Company/Owner Information:
Owner Name: Redmond Minerals Inc.
Address 2725 N 100 W
City Redmond
State UT
Zip 84665
Contact Information:
Contact Name: Mike Forbush
Contact email: [e-mail]
Contact phone [phone]
Permit Information:
Site Name: Bentonite Processing Plant
Permit ID: Ex DAQE-111110001-21 DAQE-AN0100350011-10
Is the AO revocation subject to the Oil and Gas PBR Registration? PBR Requirements
No
Please provide an explanation for the request to revoke your permit
We no longer use this facility and have no plans of using it in the future.
The undersigned acknowledges they are the responsible party to provide DAQ with this information...
https://utahgov.co1.qualtrics.com/WRQualtricsControlPanel/File.php?F=F_XBsBBdIlL0aT4ul
5/22/25, 7:41 AM State of Utah Mail - Fwd: Permit Revocation Request
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-f:1832761618117192419&simpl=msg-f:183276161811719241…1/2
--
Alan Humpherys
Manager | Minor NSR Section
P: [phone]
F: [phone]
airquality.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
Lucia Mason <[e-mail]>Thu, May 22, 2025 at 7:11 AM
To: Alan Humpherys <[e-mail]>
Will do. Thank you!
[Quoted text hidden]
--
Lucia Mason
Environmental Engineer | Utah Division of Air Quality
Address: 1950 West 195 North, Salt Lake City, UT 84116
Phone: [phone]
airquality.utah.gov
[Quoted text hidden]
5/22/25, 7:41 AM State of Utah Mail - Fwd: Permit Revocation Request
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-f:1832761618117192419&simpl=msg-f:183276161811719241…2/2