1. LawStack
  2. Title 40 - Protection of Environment
  3. Chapter I - ENVIRONMENTAL PROTECTION AGENCY
  4. Subchapter C - AIR PROGRAMS
  5. Part 63 - NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES
  6. Subpart G - National Emission Standards for Organic Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry for Process Vents, Storage Vessels, Transfer Operations, and Wastewater
  7. 40 CFR Table 23 to Subpart G of Part 63
40 CFR Table 23 to Subpart G of Part 63
Average Clingage Factors (c)
June 9, 2020
CFR
Open Table
Liquid Shell condition
Light rustb Dense rust Gunite lined
Gasoline 0.0015 0.0075 0.15
Single component stocks 0.0015 0.0075 0.15
Crude oil 0.0060 0.030 0.60

aUnits for average clingage factors are barrels per 1,000 square feet.

bIf no specific information is available, these values can be assumed to represent the most common condition of tanks currently in use.

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Table 22 to Subpart G of Part 63 Paint Factors for Fixed Roof Tanks
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Table 24 to Subpart G of Part 63 Typical Number of Columns as a Function of Tank Diameter for Internal Floating Roof Tanks With Column Supported Fixed Roofs

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