DAQ-2025-000849

DAQE-GN162480001-25
{{$d1 }}

Blake Downey
Wasatch Environmental, Inc.
2410 West California Avenue
Salt Lake City, UT 84104
[e-mail]

Dear Mr. Downey:

RE: Notice of Intent for Installation of a New Soil Vapor Extraction System at Industry Property
Project Number: N162480001

We have reviewed Wasatch Environmental, Inc.’s Notice of Intent submitted January 28, 2025, regarding
the installation of a new soil vapor extraction (SVE) system to remediate the impacted soils from Industry
Property located at 500 West 700 South, Salt Lake City in Salt Lake County, UT. This operation shall be
done in a way to ensure that the actual emissions of volatile organic compounds (VOCs) do not exceed 5
tons/year, in accordance with R307-401-9 of the Utah Administrative Code (UAC). Also, the level of any
individual hazardous air pollutant (HAP) shall not exceed the emission threshold values listed in
R307-410-5(1)(c)(i)(C).

Emissions estimates of VOC shall be based on test data obtained in accordance with EPA document
SW-846, test 8260c or 8261A, or the most recent revision of either method. Emissions estimates of HAPs
shall be based on test data obtained in accordance with EPA document SW-846, test 8021B, or the most
recent revision of that method. Other test methods may be approved by the Director. Initial test samples
shall be drawn on system startup. Additional test samples shall be drawn on intervals of no less than
twenty-eight days and no more than thirty-one days (i.e., monthly) for the first quarter, quarterly for the
remainder of the first year, and semi-annually thereafter or as determined necessary by the Director.
Results of the testing and calculated annual quantity of emissions of VOC and HAPs shall be submitted to
the Division of Air Quality, attention Minor Source Compliance section, within 30 days of sampling.

At the anticipated level of air emissions, this project will not require an approval order, but the project
will have to meet the requirements as stated in the R307-401-15 UAC. Should the actual emissions of
VOC or HAPs approach the thresholds of R307-401-9(1)(a) or R307-410-5(1)(d), the SVE system shall
be shut down for the remainder of the year or until an approval order can be obtained from the Division of
Air Quality. Also, please note that this letter in no way releases the owner or operator of the site from any
liability for compliance with all other applicable federal, state, county, and city regulations.

The fee for issuing this letter is the cost, as authorized by the legislature, of the actual time spent by the
review engineer and all other staff on the project. Payment should be sent to the Division of Air Quality
upon receipt of the invoice.
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

" / 2 / 6 Ú Û Û Ù Û Þ
DAQE-GN162480001-25
Page 2

Thank you for informing the Division of Air Quality of this project. If you have any additional questions,
please contact Katie Andersen who may be reached at [phone] or [e-mail].

Sincerely,

Bryce C. Bird
Director

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Alan D. Humpherys, Manager
New Source Review Section

BCB:ADH:KA:jg

{{#d1=date1_es_:signer1:date:format(date, "mmmm d, yyyy")}} {{#s=Sig_es_:signer1:signature}}
Vapor/Water
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Drafted By:
1790 N. CASE STREET ORANGE, CA 92865, US714-936-2706 ● www.calclean.com
Print Date:
Approved By:
Designed By:
LEGAL NOTICE: This is the intellectualproperty of CalClean, Inc. This designis proprietary and patent pending. It is
for use by CalClean’s customers forreview purposes only.
1/23/2019 5:33:15 PM
CT 2.0
Layout and Flow Diagrams
Power & Data
DESIGNSv2
Gordon Melin
Gordon Melin
using the
method of treatment
- - -
TYPICAL
Trailer Mounted
MobileRemediationSystem
- Carbon Filter -
General Layout of CalClean Trailer Mounted MRS using the Carbon Method of Treatment
Process Flow
FIGUREDRAWING DATEPROJECT NO.
Environmental Science and Engineering
Approximate Site Boundaries
700 South
50
0

W
es
t
Scale: 1-inch equals
approximately 116 feet
Sub-Slab Soil Gas
Sample Exceedance Map
Industry Property
Salt Lake City, Utah
2627-001B January 9, 2024 4
SG-1
Chloroform - 5.21
2-Propanol - 13,600
TCE - 186
SG-2
TCE - 25.9
SG-3
TCE - 15.8
SG-4
TCE - 81.4
SG-5
2-Propanol - 18,000
TCE - 363
SG-6
Chloroform - 8.71
PCE - 597
TCE - 1,770
SG-7
Naphthalene - 7.22
TCE - 111
SG-8
TCE - 611
SG-9
Chloroform - 24.3
CIS - 3,950
TCE - 32,100
TPH LOW - 15,200SG-11
Benzene - 16.8
Chloroform - 8.32
Ethylbenzene - 323
4,180TCE - SG-10
SG-12
2-Propanol - 2,280,000
TCE - 97.0
SG-13
TCE - 517
SG-14
Ethylbenzene - 77.2
Naphthalene - 5.50
TCE - 11.3
SG-15
TCE - 257
SG-16
Chloroform - 7.54
TCE - 1,730
SG-17
TCE - 29.0
SG-18
Chloroform - 11.5
TCE - 1,990
SG-19
TCE - 152
SG-20
Chloroform - 14.0
PCE - 869
TCE - 1,100
SG-21
Chloroform - 22.6
PCE - 5,100
TCE - 6,590
SG-22
PCE - 1,320
TCE - 4,370
SG-23
TCE - 246
SG-24
Ethylbenzene - 48.6
PCE - 496
TCE - 504
SG-25
Ethylbenzene - 118
TCE - 76.6
Soil Gas Sample Location
LEGEND
All Concentrations are expressed in micrograms per cubic meter (µg/m3).
Bold concentrations exceed the applicable U.S. EPA VISL Residential TSSGC.
Bold red concentrations exceed the applicable U.S. EPA VISL Commercial TSSGC.
FIGURE
1
DRAWING DATEPROJECT NO.
Environmental Science and Engineering
Site Location Map
2627-001E January 21, 2025
Industry Property
500 West 700 South
Salt Lake City, UtahScale: 1-inch equals
approximately 1,185 feet
Approximate Site Boundary
FIGURE
2
DRAWING DATEPROJECT NO.
Environmental Science and Engineering
Soil Gas Remediation Process Map
Approximate Site Boundary
Proposed Area of Filter Unit
and GAC Vessel Discharge to Air
(Location #1)
Soil Gas Treatment
Flow Path
Proposed Area of Filter Unit
and GAC Vessel Discharge to Air
(Location #2)
Area of Extraction
Wells
W 700 South
50
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2627-001E January 21, 2025
Industry Property
500 West 700 South
Salt Lake City, UtahScale: 1-inch equals
approximately 97 feet
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SG-1 10/12/2023 <0.639 <0.622 5.21 1.23 <1.20 <2.27 <0.867 <2.22 <3.30 <0.851 172 2.46 186 <0.934 1.86 <0.867 158 <0.924 <0.689 5.91 1.07 <0.924 213 <0.982 1.33 2.31 <1.53 <0.818 <0.983 8.37 5.07 13,600 <2.15 <0.590 <1.09 <0.982 <0.982 <826 17.6 <0.982 <4.42 <2.27 <0.803SG-20 10/11/2023 1.74 3.83 14.0 0.675 <1.20 <2.27 2.09 2.24 <3.30 1.04 869 7.65 1,100 <0.934 7.67 3.41 411 <0.924 <0.689 71.7 15.0 <0.924 74.7 2.61 1.90 1.77 <1.53 1.36 <0.983 1.07 20.1 337 2.45 <0.590 <1.09 3.09 <0.982 2,660 <13.5 <0.982 <4.42 <2.27 <0.803SG-21 10/11/2023 3.87 3.30 22.6 0.659 1.50 2.54 2.48 3.15 <3.30 <0.851 5,100 6.37 6,590 <0.934 7.89 3.08 240 <0.924 1.21 39.6 17.0 <0.924 76.2 1.07 2.17 2.35 <1.53 1.97 <0.983 <0.694 22.8 57.0 <2.15 <0.590 1.25 1.81 <0.982 10,000 <13.5 <0.982 <4.42 <2.27 2.35SG-22 10/11/2023 2.34 3.55 <0.973 <0.413 <1.20 <2.27 1.27 <2.22 <3.30 <0.851 1,320 <1.88 4,370 <0.934 5.33 2.48 216 <0.924 <0.689 <0.793 5.31 <0.924 147 1.55 1.66 2.11 <1.53 <0.818 <0.983 8.92 10.7 100 <2.15 <0.590 26.9 2.40 <0.982 5,660 37.8 <0.982 6.30 <2.27 <0.803SG-23 10/11/2023 1.67 <0.622 <0.973 <0.413 <1.20 <2.27 1.66 3.81 <3.30 <0.851 320 <1.88 246 <0.934 5.72 2.22 104 <0.924 <0.689 <0.793 <0.793 <0.924 270 <0.982 1.63 2.17 <1.53 <0.818 <0.983 13.3 17.3 105 <2.15 <0.590 <1.09 1.47 <0.982 971 37.00 <0.982 <4.42 14.8 <0.803SG-24 10/11/2023 2.73 <0.622 <0.973 <0.413 <1.20 <2.27 48.6 4.09 <3.30 <0.851 496 <1.88 504 <0.934 191 58.5 24.0 <0.924 <0.689 <0.793 <0.793 <0.924 107 2.77 2.23 2.27 <1.53 <0.818 <0.983 6.70 5.04 144 <2.15 <0.590 <1.09 2.09 <0.982 1,410 35.9 <0.982 <4.42 <2.27 <0.803SG-25 10/11/2023 1.51 <0.622 <0.973 <0.413 <1.20 <2.27 118 2.88 <3.30 <0.851 89.6 <1.88 76.6 <0.934 507 164 111 <0.924 <0.689 <0.793 <0.793 <0.924 353 2.15 11.6 2.41 2.08 <0.818 4.88 4.51 5.57 1,080 <2.15 <0.590 <1.09 2.46 <0.982 1,350 <13.5 <0.982 <4.42 <2.27 <0.803
1.98 1.53 5.97 0.37 0.21 0.36 24.87 2.31 0.00 0.15 1195.23 2.35 1867.51 0.00 103.78 33.38 180.57 0.00 0.17 16.74 5.48 0.00 177.27 1.45 3.22 2.20 0.30 0.48 0.70 6.12 12.37 2203.29 0.35 0.00 4.02 1.90 0.00 3150.14 18.33 0.00 0.90 2.11 0.34
0.0000000033 0.0000000026 0.0000000101 0.0000000006 0.0000000004 0.0000000006 0.0000000419 0.0000000039 0.0000000000 0.0000000003 0.0000020146 0.0000000040 0.0000031478 0.0000000000 0.0000001749 0.0000000563 0.0000003044 0.0000000000 0.0000000003 0.0000000282 0.0000000092 0.0000000000 0.0000002988 0.0000000024 0.0000000054 0.0000000037 0.0000000005 0.0000000008 0.0000000012 0.0000000103 0.0000000208 0.0000037137 0.0000000006 0.0000000000 0.0000000068 0.0000000032 0.0000000000 0.0000053097 0.0000000309 0.0000000000 0.0000000015 0.0000000036 0.00000000060.04 0.03 0.13 0.01 0.00 0.01 0.54 0.05 0.00 0.00 26.11 0.05 40.80 0.00 2.27 0.73 3.94 0.00 0.00 0.37 0.12 0.00 3.87 0.03 0.07 0.05 0.01 0.01 0.02 0.13 0.27 48.13 0.01 0.00 0.09 0.04 0.00 68.81 0.40 0.00 0.02 0.05 0.010.52 0.40 1.57 0.10 0.06 0.10 6.52 0.61 0.00 0.04 313.31 0.62 489.54 0.00 27.20 8.75 47.33 0.00 0.05 4.39 1.44 0.00 46.47 0.38 0.84 0.58 0.08 0.12 0.18 1.61 3.24 577.56 0.09 0.00 1.05 0.50 0.00 825.77 4.80 0.00 0.24 0.55 0.09
2,366.69 Without running the effluent through the GAC vessels.
849.33 Without running the effluent through the GAC vessels.NOTES:Only analytes that were detected at concentrations above the laboratory reporting limit in one or more samples are presented in the table.< = Concentration was below the laboratory detection limit.Assumes CFM of 300 with a 30-day month.
= HAP
all concentrations are expressed in micrograms per cubic meter (µg/m3), unless otherwise noted
Table 1Soil Gas Analytical Data and Estimated Emissions CalculationsIndustry PropertyApproximately 500 West and 700 SouthSalt Lake City, UT
Pounds Per 1 Month Event
Pounds Per 1 YearTotal VOCs/Year (lbs)Total HAPS VOCs/Year (lbs)
Average ConcentrationPounds Per Cubic Meter
Katie Andersen <[e-mail]>
Industry Small Source Exemption Application
6 messages
Katie Andersen <[e-mail]>Wed, Jan 22, 2025 at 3:50 PM
To: [e-mail]
Hello Michael Cronin,
The Utah Division of Air Quality received your application for a Small Source Exemption on January 21, 2025 for the 30-
Day Pilot Test of VOC removal. I've been assigned as the project engineer for this Small Source Exemption.
I have a question regarding your application. From the brief description you provided, it sounds like this is a soil
remediation project. If this is the case, please fill out this form. If that is not the case, would you mind providing more detail
about what the processes at the site are?
I may have more follow up questions.
Cheers,
Katie Andersen
--

Katie Andersen
Environmental Engineer | Minor NSR Section
M: [phone]
airquality.utah.gov
Michael Cronin <[e-mail]>Wed, Jan 22, 2025 at 3:56 PM
To: Katie Andersen <[e-mail]>
Cc: Blake Downey <[e-mail]>, Jacob Scott <[e-mail]>
Kae,
The remediaon technology is intended to address soil, soil gas, and groundwater. It’s mul-phase extracon so we
will generate both a groundwater waste stream and a soil gas waste stream, both of which will be treated prior to
discharge. So, it is more than a soil vapor extracon or soil venng process. Let me know if you have any addional
concerns. I would be n=more than happy to answer any quesons you may have.
Kind regards,
Mike
2/3/25, 11:40 AM State of Utah Mail - Industry Small Source Exemption Application
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-a:r-8557370796970658399&simpl=msg-a:r75401970926887…1/5

Michael S. Cronin, P.G.
Senior Project Geologist and Senior Project Manager
Wasatch Environmental, Inc.
Office: [phone]
Cell: [phone]
Email: [e-mail]
[Quoted text hidden]
Katie Andersen <[e-mail]>Tue, Jan 28, 2025 at 9:50 AM
To: Michael Cronin <[e-mail]>
Cc: Blake Downey <[e-mail]>, Jacob Scott <[e-mail]>
Hi Mike,
With this project being a 30-day pilot project to remediate the soil and groundwater, it would be best to process this as a
soil remediation project under R307-401-15 Air Strippers and Soil Vapor Extraction Systems. Then, if needed, the project
could continue on until the remediation is finished.
A small source exemption is mainly meant for facilities and plants that emit air pollutants during the manufacture of goods.
These sources typically operate yearly as long as the company is in business.
Please let me know if there are any other reasons why this project should be processed as a small source exemption. If
there are no other reasons, please fill out the soil/groundwater remediation form. The link to fill out the remediation form
can be found here.
Cheers,
Katie Andersen
[Quoted text hidden]
Michael Cronin <[e-mail]>Tue, Jan 28, 2025 at 11:54 AM
To: Katie Andersen <[e-mail]>
Cc: Blake Downey <[e-mail]>, Jacob Scott <[e-mail]>
Kae,
Okay, we’ll proceed accordingly.
[Quoted text hidden]
Katie Andersen <[e-mail]>Fri, Jan 31, 2025 at 10:48 AM
To: Michael Cronin <[e-mail]>
Cc: Blake Downey <[e-mail]>, Jacob Scott <[e-mail]>
2/3/25, 11:40 AM State of Utah Mail - Industry Small Source Exemption Application
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-a:r-8557370796970658399&simpl=msg-a:r75401970926887…2/5
Mike,
We've received the soil remediation application. There seems to be some errors with the system, and we can't retrieve the
documents that were attached to the application. Would you mind emailing those to me? Apologies for the
inconvenience.
Additionally, would you like to process this under Wasatch Environmental or under Industry Office SLC, LLC?
Cheers,
Katie Andersen
[Quoted text hidden]
Blake Downey <[e-mail]>Fri, Jan 31, 2025 at 4:19 PM
To: Katie Andersen <[e-mail]>, Michael Cronin <[e-mail]>
Cc: Jacob Scott <[e-mail]>
Katie,

Please see the attached PDFs that did not process for some reason! I have also attached the calculated yearly
emissions (based on soil gas data from the area) from the remediation system. Please note, I used the average VOC
concentrations, assumed that we would be running out the remediations systems max flow rate (not likely), and ran the
system non-stop for a solid year (again not likely) to get these numbers. I also did not include attenuation of the VOCs
from being ran through the proposed GAC system, so this estimate is very conservative as assumes we are running
straight from the ground to the discharge point un-filtered! Please let mw know if you have any questions.

Thank you!

Blake Downey, P.G.
Vice President and Senior Project Hydrogeologist
Wasatch Environmental
2410 West California Avenue
Salt Lake City, Utah 84104
Cell: 435-760-8269
Office: 801-972-8400
Email: [e-mail]
[Quoted text hidden]
[Quoted text hidden]
[Quoted text hidden]
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2/3/25, 11:40 AM State of Utah Mail - Industry Small Source Exemption Application
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-a:r-8557370796970658399&simpl=msg-a:r75401970926887…3/5

Katie Andersen
Environmental Engineer | Minor NSR Section
M: [phone]
airquality.utah.gov

--

Katie Andersen
Environmental Engineer | Minor NSR Section
M: [phone]
airquality.utah.gov

2/3/25, 11:40 AM State of Utah Mail - Industry Small Source Exemption Application
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-a:r-8557370796970658399&simpl=msg-a:r75401970926887…4/5

--

[Quoted text hidden]
3 attachments
Figures.pdf
1517K
CLCL-CT-Typ 2.0 LD+PFD (02) BAAQMD3.pdf
220K
Soil Gas Data and Emissions Calculations.pdf
117K
2/3/25, 11:40 AM State of Utah Mail - Industry Small Source Exemption Application
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-a:r-8557370796970658399&simpl=msg-a:r75401970926887…5/5
Response Summary:
Q12. Consulting Company Information
Company Name Wasatch Environmental, Inc.
Address 2410 west California Ave.
City salt lake city
Phone [phone]
Fax NA
Email [e-mail]
Site Number 2627-001E

Q5. Initial location of contamination (please include the address)
Approximately the northwest corner of the 500 West and 700 South intersection located in Salt Lake City, Utah.

Q8. Remediation Approach
Soil Vapor extraction

Q14. Please attach flow diagram
[Click here]

Q15. Please attach site plan of process
[Click here]

Q11. Contact Information: (person filling out form - signature will be required)
Name blake downey
Title Vice President
Phone [phone]
Date 1-28-25

Q10. By signing below, I hereby certify that the information and data submitted in this notice fully describes
this site and ONLY this site. The information provide is true, accurate, and complete to the best of my
knowledge. I understand that I am responsible for determining whether the site remain eligible for this
exemption before making operational or process changes in the future, and agree to notify the Division of
Air Quality when this site is not longer eligible for this exemption. (Signature of Owner/Manager)
[Click here]

Embedded Data:
N/A
Response Summary:
To be eligible businesses shall not do any of the follow:

1) Emit more than 5 tons per year of each of the following pollutants: Sulfur Dioxide (SO2), Carbon Monoxide (CO),
Nitrogen Oxides (NOx), Particulate Matter (PM10), Ozone (O3), or Volatile Organic Compounds (VOCs).
2) Emit more than 500 lbs/yr of any single Hazardous Air Pollutant (HAP), and emit more than 2000 lbs/yr of any
combination of HAPs
3) Emit more than 500 lbs/yr of any combination of air contaminants not listed in 1 or 2

A copy of this registration notice and worksheets are required on site to verify permit exemption status.

Please be aware a the Small Source Exemption ONLY exempts the site from the air permitting requirements of R307-
401-5 thru R307-401-8 of the Utah Administrative Code, all other air quality regulations still apply.

Q4.
Please fill out the following contact information:
Site Contact Site Owner
Name Michael Cronin Industry Industry Office SLC,
LLC
Mailing Address 2410 W. California Ave.650 S. 500 W.6330 S. 3000 E., Suite
630
Mailing Address 2 NA NA NA
City Salt Lake City Salt Lake City Cottonwood Heights
State Utah Utah Utah
Zip Code 84104 84101 84121
Phone [phone]-7000
Fax NA NA NA
Email mc@wasatch-
environmental.com [e-mail] [e-mail]

Q5. County the Site is located in:
Salt Lake County

Q6. Briefly describe the process including the end products, raw materials, and process equipment used.
We will be conducting a 30-day pilot test which will remove VOC-impacted (mainly chlorinated solvent impacts) soil gas
from beneath the project site building. The soil gas will be processed through a trailer mounted remediation system. the
waste stream will be run through a vapor water separator, then a vapor oil separator, then through three 1,000 pound
GAC vessels prior to discharge to the atmosphere. The system is designed to handle a VOC influent of 200 PPMV.

Q7. List emission units
micrograms per cubic meter. Emissions are unknown, as system has not been installed or started. I attached a soil gas
table that shows data collected from the site. Please not only samples IA-12, IA-13, IA-1, IA-20, IA-21, IA-22, IA-23,
and IA-24 are applicable to our pilot test.

Q8. List any pollution control equipment
See explanation above.

Q9. Please include Annual Emission Rates calculation spreadsheet.
[Click here]

Q11. Contact Information: (person filling out form - signature will be required)
Name blake downey
Title Vice President
Phone [phone]
Date 1-21-25

Q10. By signing below, I hereby certify that the information and data submitted in this notice fully describes
this site and ONLY this site. The information provide is true, accurate, and complete to the best of my
knowledge. I understand that I am responsible for determining whether the site remain eligible for this
exemption before making operational or process changes in the future, and agree to notify the Division of
Air Quality when this site is not longer eligible for this exemption. (Signature of Owner/Manager)
[Click here]

Embedded Data:
N/A