DAQ-2024-010166

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New Source Review Section
Date: _____________________________

Utah Division of Air Quality
Company: _________________________
Site/Source:________________________
Form 20
rganic Liquid Storage Tank O

Equipment
1. Tank manufacturer: ___________________________ 2. Identification number: _____________________
3. Installation date: ______________________________ 4. Volume: __________________________ gallons
5. Inside tank diameter: ______________________ feet 6. Tank height: ________________________ feet
7. True vapor pressure of liquid: _______________ psia 8. Reid vapor pressure of liquid: ____________ psi
9. Outside color of tank: __________________________ 10. Maximum storage temperature: __________ F O
11. Average throughput: ____________ gallons per year 12. Turnovers/yearly ____ Monthly ____ Weekly ___
13. Average liquid height (feet): _____________________ Yes No Number ______ 14. Access hatch: □ □
15. T
a. P

r
b. S
Type: ________________________________
16. D
ll Yes No Number_____
ll
ak
ype of Seals:
rimary seals:
□ Mechanical shoe
□ Resilient filled
□ Liquid filled
□ Vapor mounted
□ Liquid mounted
□ Flexible wipe
econdary seal:
eck Fittings:
□Gauge float we □
Gauge hatch/
sample we □ Yes □ No Number_____
Roof drains □ Yes □ No Number_____
Rim vents □ Yes □ No Number_____
Vacuum bre □ Yes □ No Number_____
Roof leg □ Yes □ No Number_____
Ladder well □ Yes □ No Number_____
Column well □ Yes □ No Number_____
Other:_________________________________
17. S
Deck Fitting Category: ________________________
18. T

______________________________________
hell Characteristics:
Condition: _________________________________
Breather Vent Settings: ________________________
Tank Construction: ___________________________
Roof Type: __________________________________
Deck Construction: ___________________________
ype of Construction:
□ Vertical Fixed Roof
□ Horizontal Fixed Roof
□ Internal Floating Roof
□ External Floating Roof
□ Other (please specify)
19. Additional Controls:
Gas Blanket Venting Carbon Adsorption Thermal Oxidation Other:_______________ □□ □□□
20. Single Liquid Information
Liquid Name: __________________________________
CAS Number: __________________________________
Avg. Temperature: ______________________________
Vapor Pressure: ________________________________
Liquid Molecular Weight: ________________________ Liquid Molecular Weight: ________________________
Liquid Name: __________________________________
CAS Number: __________________________________
Avg. Temperature: ______________________________
Vapor Pressure: ________________________________

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Form 20 - Organic Liquid Storage Tank
(Continued)
21. Chemical Components Information
Chemical Name: ________________________________
Percent of Total Liquid Weight: _____________________
Molecular Weight: _______________________________
Avg. Liquid Temperature: _________________________
Vapor Pressure: ________________________________ Vapor Pressure: ________________________________
Chemical Name: ________________________________
Percent of Total Liquid Weight: _____________________
Molecular Weight: _______________________________
Avg. Liquid Temperature: _________________________
Emissions Calculations (PTE)
22. C
Submit calculations as an appendix. Provide Material Safety Data Sheets for products being stored.
alculated emissions for this device:
VOC _________Lbs/hr_____ Tons/yr
HAPs_________Lbs/hr (speciate)______Tons/yr (speciate)

Instructions

Note: 1. Submit this form in conjunction with Form 1 and Form 2.
2. or questions in filling out this form.
Ask to speak with a New Source Review engineer. We will be glad to help!
on number that will appear on the tank.
s or barrels.
r in feet.
liquid (psi).
ach during storage (degrees Fahrenheit).
emptied and refilled per year, month or week.
ss hatches and the number.
17. Specify condition of the tank, also include the following:
d roof tanks
el construction sizes and seam length
olled, or detail
22. ations for all criteria pollutants and HAPs. Use AP-42 or manufacturers’ data to complete your
calculations.
ENERIC\Forms 2010\Form20 Organic Liquid Storage Tanks.doc
Revised 12/20/10
Call the Division of Air Quality (DAQ) at [phone] if you have problems

1. Indicate the tank manufacturer's name.
2. Supply the equipment identificati
3. Indicate the date of installation.
4. Indicate the capacity of the tank in gallon
5. Specify the inside tank diamete
6. Specify the tank height in feet.
7. Indicate the true vapor pressure of the liquid (psia).
8. Indicate the Reid vapor pressure of the
9. Indicate the outside color of the tank.
10. Supply the highest temperature the liquid will re
11. Indicate average annual throughput (gallons).
12. Specify how many times the tank will be
13. Specify the average liquid height (feet).
14. Indicate whether or not the tank has acce
15. Indicate what type of seals the tank has.
16. Indicate what types of deck fittings are installed.
Breather vent settings in (psig) for fixe
Tank construction, welded or riveted
Roof type; pontoon, double deck, or self-supporting roof
Deck construction; bolted or welded, sheet or pan
Deck fitting category; typical, contr
18. Indicate the type of tank construction.
19. Indicate other types of additional controls which will be used.
20. Provide information on liquid being stored, add additional sheets as necessary.
21. Provide information on chemicals being stored, add additional sheets as necessary.
Supply calcul

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