1. a) The following abbreviations are used in this Part:

   bbl	barrels (42 gal)
   C	degrees Celsius or centigrade
   cu in	cubic inches
   F	degrees Fahrenheit
   ft	foot
   g	gram
   g/mole	grams per mole
   gal	gallon
   hr	hour
   in	inch
   K	degrees Kelvin
   kcal	kilocalorie
   kg	kilogram
   kg/hr	kilograms per hour
   kPa	kilopascals; one thousand newtons per square meter
   l	liter
   lb	pound
   lbs/hr	pounds per hour
   lbs/gal	pounds per gallon
   m	meter
   Mg	megagram, metric ton or tonne
   min	minute
   MJ	megajoules
   mm Hg	millimeters of mercury
   ml	milliliter
   ppm	parts per million
   ppmv	parts per million by volume
   psi	pounds per square inch
   psia	pounds per square inch absolute
   psig	pounds per square inch guage
   scm	standard cubic meters
   T	English ton

2. b) The following conversion factors have been used in this Part:

   English

   Metric

(Source: Amended at 12 Ill. Reg. 815, effective December 24, 1987)