Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 211 - DEFINITIONS AND GENERAL PROVISIONS
Subpart B - DEFINITIONS
Section 211.3695 - Maximum True Vapor Pressure

Universal Citation: 35 IL Admin Code ยง 211.3695

Current through Register Vol. 48, No. 38, September 20, 2024

"Maximum true vapor pressure" means the equilibrium partial pressure exerted by stored VOL at the temperature equal to the highest calendar-month average of the VOL storage temperature for VOLs stored above or below the ambient temperature or at the local maximum monthly average temperature of 75°F for the Chicago area as defined at 35 Ill. Adm. Code 218.100 or 79°F for the Metro-East area as defined at 35 Ill. Adm. Code 219.100 for VOLs stored at the ambient temperature, as determined:

a) In accordance with methods described in American Petroleum Institute bulletin 2517, Evaporation Loss from External Floating Roof Tanks, incorporated by reference at 35 Ill. Adm. Code 218.112 and 219.112; or

b) By ASTM Method D2879-83, incorporated by reference at 35 Ill. Adm. Code 218.112(a)(1) and 219.112(a)(1).

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