DAQ-2024-004477

Small Source Registration

DAQE-EN161920001-24

{{$d1 }}

Jolene Clark
Utah State University
416 East Innovation Avenue
North Logan, UT 84341
[e-mail]

Dear Ms. Clark:

Re: Request for Evaluation of Compliance with Rule R307-401-9, UAC: Small Source Exemption
Project Fee Code: N161920001

On December 11, 2023, the Division of Air Quality (DAQ) received your request for a small source
exemption for Utah State University’s Hyde Park Space Dynamics Laboratory. The source is located at
150 East 4000 North, Hyde Park, Cache County. DAQ has determined the small source exemption
applies to the source, as long as the equipment and associated processes operate as specified in the
registration request.

The small source exemption does not exempt a source from complying with other applicable federal,
state, and local regulations and the current Utah Administrative Code. Based on the emissions that you
submitted to DAQ with your registration request, Utah State University’s Hyde Park Space Dynamics
Laboratory is not required to obtain an approval order under R307-401. If you change your operation
such that there is an increase in emissions, we recommend that you notify us, as an approval order may be
required.

As authorized by the Utah Legislature, the fee for issuing this small source exemption is a one-time filing
fee in addition to the actual time spent by the review engineer and all other staff on the project. Payment
should be sent to DAQ 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 à Û Ù Û Ý
DAQE-EN161920001-24
Page 2
Thank you for registering your source with the DAQ. If you have any additional questions, please contact
John Persons at [phone] or [e-mail].

Sincerely,

Bryce C. Bird
Director

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Alan D. Humpherys, Manager
New Source Review Section

BCB:ADH:JP:jg

{{#d1=date1_es_:signer1:date:format(date, "mmmm d, yyyy")}}
{{#s=Sig_es_:signer1:signature}}

Small Source Registration

DAQE-EN161920001-24

{{$d1 }}

Jolene Clark
Utah State University
416 East Innovation Avenue
North Logan, UT 84341
[e-mail]

Dear Ms. Clark:

Re: Request for Evaluation of Compliance with Rule R307-401-9, UAC: Small Source Exemption
Project Fee Code: N161920001
On December 11, 2023, the Division of Air Quality (DAQ) received your request for a small source exemption for Utah State University’s Hyde Park Space Dynamics Laboratory. The source is located at 150 East 4000 North, Hyde Park, Cache County. DAQ has determined the small source exemption applies to the source, as long as the equipment and associated processes operate as specified in the registration request.

The small source exemption does not exempt a source from complying with other applicable federal,
state, and local regulations and the current Utah Administrative Code. Based on the emissions that you
submitted to DAQ with your registration request, Utah State University’s Hyde Park Space Dynamics
Laboratory is not required to obtain an approval order under R307-401. If you change your operation
such that there is an increase in emissions, we recommend that you notify us, as an approval order may be
required.

As authorized by the Utah Legislature, the fee for issuing this small source exemption is a one-time filing
fee in addition to the actual time spent by the review engineer and all other staff on the project. Payment
should be sent to DAQ 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

DAQE-EN161920001-24
Page 2
Thank you for registering your source with the DAQ. If you have any additional questions, please contact
John Persons at [phone] or [e-mail].

Sincerely,

Bryce C. Bird
Director

{{$s }}

Alan D. Humpherys, Manager
New Source Review Section

BCB:ADH:JP:jg

{{#d1=date1_es_:signer1:date:format(date, "mmmm d, yyyy")}} {{#s=Sig_es_:signer1:signature}}

Water
heater,
boiler

Water
heater,
two boilers

Water
heater,
HVAC

Water
heater,
boiler

Water
heater,
HVAC

Water
heater,
HVAC

Water
heater,
HVAC

Water
heater,
HVAC

Water
heater,
HVAC

Water
heater,
HVAC

Water
heater,
HVAC

Water
heater,
two boilers

Water
heater,
boiler

Water
heater,
boiler

Water
heater,
boiler
Natural Gas (boilers, water heaters, roof top units)
Location Fuel
Building Latitude Longitude Square footage BTU Total BTU
41.76188 111.8232 28,537 NG (mm SCF)Boiler 4,000,000
Water heater 150,000
41.76192 111.8216 46,869 NG (mm SCF)Boiler 3,977,000
Boiler 1,440,000
Water heater 250,000
41.7651 111.8199 10,964 NG (mm SCF)HVAC 460,000
Water heater 150,000
41.76153 111.8193 23,051 NG (mm SCF)HVAC 2,418,000
Water heater 130,000
41.76252 111.8199 10,350 NG (mm SCF)HVAC 1,035,000
Water heater 40,000
41.76131 111.8186 58,642 NG (mm SCF)Boiler 1,410,000
Boiler 1,700,000
Water heater 200,000
41.7586 111.8175 58,605 NG (mm SCF)Boiler 2,820,000
Water heater 200,000
41.75959 111.8185 107,961 NG (mm SCF)Boiler 9,000,000
Water heater 150,000
41.75968 111.8195 15,191 NG (mm SCF)HVAC 2,110,000
Water heater 75,000
41.76075 111.8194 16,116 NG (mm SCF)HVAC 390,000
Water heater 75,100
41.75993 111.8185 107,699 NG (mm SCF)Boiler 9,000,000
Water heater 150,000
41.76374 111.8026 8,909 NG (mm SCF)HVAC 550,000
Water Heater 40,000
41.76362 111.8215 20,579 NG (mm SCF)HVAC 1,950,000
Water heater 76,000
41.76328 111.8192 13,417 NG (mm SCF)HVAC 920,000
Water heater 40,000
1740
1750
1480
595
570
1500
1530
2,185,000
465,100
416 4,150,000
5,667,000
610,000
2,548,000
1,075,000
3,310,000
3,020,000
575
1575
489
621
1747
1525
9,150,000
9,600,000
9,150,000
590,000
2,026,000
41.76266 111.8219 83,079 NG (mm SCF)Boiler 4,184,000
Water heater 240,000
57,970,100
1695 4,424,000
Run time/yr (8760 hrs)Shape Size
MMSCF Roof Ground PM SO2 NOx CO
Round 8"x2"3 ft 18 ft 0.138 0.011 0.91 1.527
Round 4"3 ft 42 ft
Round 16"3 ft 18 ft 0.188 0.016 1.24 2.09
Round 8"3 ft 18 ft
Round 6"3 ft 18 ft
Rectangle 4" L 2"x4"16"0.02 0.0017 0.134 0.224
Round 3"3 ft 15 ft
Square 6" L 4"x4"14"0.085 0.0071 0.558 0.937
Round 3"3 ft 33 ft
Rectangle 4" L 2"x4"17"0.036 0.003 0.235 0.396
Round 4"3 ft 35 ft
Round 6"x2"3 ft 51 ft 0.11 0.0093 0.725 1.22
48" sq 8"x6"6 ft 51 ft
Round 3"3 ft 51 ft
Rectangle 4" L 2"x4"17"0.101 0.0085 0.661 1.11
Round 4"3 ft 35 ft
Round 9"x3"3 ft 48 ft 0.305 0.026 2 3.37
Round 3"3 ft 48 ft
Rectangle 3"L 2"x3"1 ft 0.073 0.0061 0.479 0.804
Round 4"3 ft 18 ft
Rectangle 4" L 2"x4"1 ft 0.015 0.0013 0.102 0.171
Round 5"3 ft 18 ft
Round 8"3 ft 48 ft 0.305 0.026 2 3.37
Round 3"3 ft 48 ft
Rectangle 5" L 4"x3"1 ft 0.019 0.0017 0.129 0.217
Round 4"3 ft 15 ft
Rectangle 4" L 2"x4"14"0.067 0.0057 0.444 0.745
Round 2"x4"3 ft 18 ft
Rectangle 4" L 2"x4"1 ft 0.319 0.027 2.1 3.53
Round 4"3 ft 15 ft
Capacity Stack
Height
28.996
26.455
36.354
49.643
5.344
22.32
9.417
80.154
5.168
17.74817,747,760,000
84,096,000,000 84.096
Max Emmisions (reading of
19,140,600,000
4,073,400,000
80,154,000,000
5,168,400,000
36,354,000,000
49,642,920,000
5,343,600,000
22,320,480,000
9,417,000,000
28,995,600,000
26,455,200,000
80,154,000,000 80.154
19.14
4.073
Round 20"3 ft 48 ft 0.147 0.012 0.969 1.63
Round 6"3 ft 48 ft
507.816 1.93 0.162 12.21 21.34
38,754,240,000 38.754
January February March April May June July August
HAPS VOC CO2 2022 2022 2022 2022 2022 2022 2022 2022
0.034 0.1 105.39 65.8 55 46.6 25.8 18.7 5.5 1 0.7
0.137 2,978.58 936 782.1 683.3 553.8 567.6 421.9 406.5 347.6
0.015 320.64 76.8 64.6 51.9 31.4 19.5 1.5 0.5 0.5
0.061 1,339.20 293.5 234 191.6 105.1 74.5 28.6 4.5 2.1
0.0024 565.02 75.8 59.2 50.3 28.6 21.5 7.6 5.1 2.1
0.079 1,739.76 406 337.9 310.4 236.5 242.7 198 206.6 168.2
0.073 1,587.30 0 0 0 0 0 0 0 0
0.22 4,809.24 816.4 736 670.8 474.5 420.8 313.6 280.8 364.3
0.053 1,148.40 125.5 133 102 50.7 34 10.2 4 4.4
0.011 244.38 51.5 40.3 31.6 16.4 11.8 3.1 0 0
0.22 4,809.24 745.7 593.7 574.6 485.5 468.2 317.4 325.8 276.2
0.014 310.08 65.8 55 46.6 25.8 18.7 5.5 1 0.7
0.049 1,064.88 63.5 54.3 36.4 17.3 9.8 3.7 1 0.5
0.231 5,045.76 58.7 50.6 34.8 17.2 11.9 5.4 0.7 0
DTH ff plates) tons/yr
0.107 2,325.24 2001 1996 1421 1250 1080 712 499 493
1.39 30,468.96 5,782 5,191.70 4,251.90 3,318.60 2,999.70 2,034.00 1,736.50 1,660.30
SCF
September October November December Total Total
2022 2022 2022 2022 Jan-Dec All Bldgs PM SO2 NOx CO HAPS
0.9 0.7 29.6 59.9 310.2 0.3102 0.00118 0.000099 0.0078 0.03
521.1 534.7 637 813 7204.6 7.2046 0.0274 0.0023 0.18 0.303
0.5 3.3 35.2 67 352.7 0.3527 0.00134 0.00011 0.0088 0.0148
6.1 21.9 92.8 199.9 1254.6 1.2546 0.0048 0.0004 0.0313 0.0527
3.1 2.1 23.4 53.6 332.4 0.3324 0.00126 0.00011 0.00831 0.014
244.8 202.1 221.5 331.9 3106.6 3.1066 0.0118 0.00099 0.0777 0.0305
0 0 192.3 349.9 542.2 0.5422 0.00206 0.00017 0.0136 0.0228
369.1 503.6 455 980.8 6385.7 6.3857 0.0243 0.002 0.159 0.268
3.7 4.8 56.3 125.5 654.1 0.6541 0.00249 0.00021 0.0164 0.0275
0 0 17.7 44.5 216.9 0.2169 0.00082 0.000069 0.0054 0.0091
348.2 313.4 450.9 594.9 5494.5 5.4945 0.0209 0.0018 0.137 0.231
0.9 0.7 29.6 59.9 310.2 0.3102 0.00118 0.000099 0.00778 0.03
1.3 1.4 17.2 59.8 266.2 0.2662 0.00101 0.000085 0.0066 0.0112
0.5 1.8 17 24.7 223.3 0.2233 0.00085 0.00011 0.0056 0.0094
Actual Emissions (DTH use from Dominion En
744 1174 1895 2295 15560 15.56 0.0591 0.0049 0.389 0.654
2,244.20 2,764.50 4,170.50 6,060.30 42,214 42.214 0.16 0.013 1.06 1.77
VOC CO2
0.00085 186
0.0198 132.3
0.00097 21.2
0.0035 75.3
0.00091 19.9
0.00078 186.4
0.0015 32.5
0.0176 383.1
0.0018 39.2
0.00059 13.01
0.0151 329.7
0.00085 186
0.00073 15.97
0.00061 13.4
nergy) tons/yr
0.048 933.6
0.116 2532.84
Emergency Generators
Location Capacity
Building Latitude Longitude Tank size KW PM SO2 NOx CO HAPS VOC CO2 Total PM SO2 Nox
1695 Diesel 500 gallon 50 0.0119 0.000138 0.408 0.094 0.0123 19.72 0.0024 0.000028 0.008
489 Diesel 1200 gallon 450 0.1065 0.00123 3.65 0.836 0.107 195.8 0.021 0.00025 0.73
575 Diesel 1000 gallon 350 0.083 0.000955 2.84 0.651 0.0835 137.1 0.017 0.00019 0.57
1525 Diesel 400 gallon 225 0.053 0.000615 4.82 0.418 0.054 88.16 0.011 0.00013 0.36
1500 Diesel 1200 gallon 450 0.1065 0.00123 3.65 0.836 0.107 195.8 0.021 0.00025 0.73
1530 Diesel 1200 gallon 450 0.1065 0.00123 3.65 0.836 0.107 195.8 0.021 0.00025 0.73
1480 Diesel 1500 gallon 500 0.118 0.00135 4.05 0.928 0.119 176.3 0.023 0.00027 0.81
0.585 0.00675 20.07 4.6 0.59 1008.68 1034 0.116 0.0014 3.94
Actual Emissions (ton/yr) (based Fuel Max Emissions (tons/yr) (based on 500 hours use a year)
CO HAPS VOC CO2 Total
0.019 0.0024 3.92
0.17 0.021 35.26
0.13 0.017 27.43
0.084 0.011 17.63
0.17 0.021 35.26
0.17 0.021 35.26
0.19 0.024 39.15
0.933 0.117 193.91 199
on 100 hours use a year {30 minutes/week + Emergency use})
VOC/Chemicals
Equipment Type HAPS
Building Room Name Purchased/yr
416 EAL lab Vapor Phase oven Galden LS-215 1.5 gallons (12 lbs)None listed
416 EAL lab Vapor Phase oven Galden LS-215 1.5 gallons (12 lbs)None listed
416 EAL lab Aqua Rose board washer Aquanox A4639 1 gallon (8 lbs)Methanol
1747 155 Walk in fume hood Aeroglaze Z306 paint 1 gallon (8 lbs)Toluene, xylene, methyl isobutyl ketone, ethyl benzene
Aeroglaze 9929 A 1 gallon (8 lbs)Strontium chormate, methyl isobutyl ketone, xylene, ethyl benzene
Aeroglaze 9929 B 1 gallon (8 lbs)Xylene, ethyl benzene
Aeroglaze 9953 1 gallon (8 lbs)Toluene
Aeroglaze 9958 1 gallon (8 lbs)Toluene, xylene, ethyl benzene
P60G2 Green Primer 1 gallon (8 lbs)Methyl isobutyl ketone, Toluene, Pentazinc Chromate
R7K44 Wash Primer Catalyst 1 gallon (8 lbs)None listed
All over 30 solder stations 2 pounds wire Lead
1 gallon flux (8 lbs)None listed
416 Machine Shop Fume Hood 9005-ANL
1 gallon every 10 years
(1% solution in 100 gal water)Chromic acid
1530 139 laser lab Fume hood IPA 650 gallon (5200 lbs)None listed
1747 170 Thermal Link Fume hood Acetone 92 gallon (736 lbs)None listed
1695 N PCL Fume hood Nitric Acid 2 gallon (16 lbs)None listed
1695 N C113 Fume hood Dichloromethane 4 gallon (32 lbs)None listed
1695 N C127 Fume hood 1,1,2-Trichloroethane 1 gallon (8 lbs)1,1,2-Trichloroethane
416 106 Fume hood Sulfuric Acid 2.5 gallon (20 lbs)None listed
416 110 Fume hood MEK 1 gallon (8 lbs)None listed
489 204 PCL Fume hood Miraclean 1 gallon (8 lbs)None listed
Hexane 2.5 gallon (20 lbs)Hexane
Arathane 0.5 gallon (4 lbs)Toluene
1747 Sunrise lab 236fa refrigerant 5 kg (11 lbs)None listed
Chemical UsedLocation
VOC Emission
lbs/hr
Not volatile NA
Not volatile NA
12.43%.99 lbs/2080 hr = .000478
65%5.2 lbs/2080 hr = .0025
60%4.8 lbs/2080 hr = .00231
40%3.2 lbs/2080 hr = .00154
55%4.4 lbs/2080 hr = .00212
30%2.4 lbs/ 2080 hr = .00115
63%5.04 lbs/2080 hr = .0024
Not volatile NA
95%1.9 lbs/2080 hr = .00091
Not volatile NA
1%NA
95%4,940 lbs/2080 hr = 2.38
95%699 lbs/2080 hr = .336
20%3.2 lbs/2080 hr = .0015
95.50%30.6 lbs/2080 hr = .109
98%7.8 lbs/2080 hr = .0038
15%3 lbs/2080 hr = .011
100%8 lbs/2080 hr = .0038
Not volatile NA
95%19 lbs/2080 hr = .0091
17%.085 lbs/2080 hr = .000041
Total = 2.87 lbs/hr
Location Fuel
Building Latitude Longitude Square footage
Hangar 41.7784 111.8529 3,953 NG (mmSCF)
Hyde Park Storage 41.80495 111.83023 10,000 NG (mmSCF)
Natural Gas (boilers, water heaters, roof top un
BTU Total BTU Run time/yr (8760 hrs)
MMSCF
HVAC 500,000
Water heater 65,000
HVAC 1,200,000 1,200,000 10,512,000,000 10.512
15.461
565,000 4,949,400,000 4.949
nits)
Capacity
Shape Size
PM SO2 NOx CO HAPS VOC
round 1 ft L 4"6 ft 0.0189 0.0016 0.124 0.208 0.0136
round 3"3 ft 12 ft
round 6 ft L 6"10 ft 0.0399 0.0034 0.263 0.442 0.029
0.0588 0.0049 0.387 0.649 0.043
Max Emmisions (readings off plates( ton/yrStack
Height
January February March April May June July August September
CO2 2022 2022 2022 2022 2022 2022 2022 2022 2022
296.94 68.3 56 41.3 30.5 17 5.3 0.1 0 0.1
630.72 101.2 83.7 67.9 35.2 21.8 4.7 0 0 0
927.66
DTH
SCF
October November December Total Total
2022 2022 2022 Jan-Dec All Bldgs PM SO2 NOx CO
6.4 41.6 54.7 321.3 0.3213 0.00222 0.000102 0.008 0.0135
0 49.7 90.1 454.3 0.4543 0.00173 0.000145 0.0114 0.0191
776 0.776 0.00295 0.000248 0.0194 0.0326
Actual Emissions (DTH use from Do
HAPS VOC CO2
0.000884 19.278
0.00125 27.258
0.00427 46.56
ominion Energy) ton/yr)