USGS

Preliminary Conceptual Models of the Occurrence, Fate, and Transport of Chlorinated Solvents in Karst Regions of Tennessee

CONVERSION FACTORS, VERTICAL DATUM, ABBREVIATIONS, AND ACRONYMS

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	                  Multiply	     By 	  To obtain
_______________________________________________________________________________
                        micron (μ)	 0.00003937	  inch
                   millimeter (mm)	 0.03937          inch
                   centimeter (cm)	 0.3937	          inch
                         meter (m)	 3.281	          foot
                    kilometer (km)	 0.6214	          mile
            square kilometer (km2)	 0.3861	          square mile
                      hectare (ha)	 2.471	          acre	
                         liter (L)	 0.2642	          gallon
                  cubic meter (m3)      35.31	          cubic foot
                     kilogram (kg)	 2.205	          pounds
grams per cubic centimeter (g/cm3)	62.43	          pounds per cubic foot
            liter per second (L/s)	15.85	          gallon per minute
        cubic meter per day (m3/d)     264.2	          gallon per day
      centimeter per second (cm/s)   2,835	          foot per day
               meter per day (m/d)	 3.281	          foot per day
      meter squared per day (m2/d)*	10.76	          foot squared per day
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Temperature in degrees Celsius (°C) can be converted to degrees Fahrenheit (°F) as follows:
°F = 1.8 x °C + 32

Sea level: In this report "sea level" refers to the National Geodetic Vertical Datum of 1929--a geodetic datum derived from a general adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.

*Transmissivity: In this report transmissivity is expressed as meter squared per day (m2/d)--The standard unit for transmissivity (T) is cubic meter per day per square meter times meter of aquifer thickness "[(m3/d)/m2]m" or cubic foot per day per square foot times foot of aquifer thickness "[(ft3/d)/ft2]ft." These mathematical expressions reduce to meter squared per day "(m2/d)" or foot squared per day "(ft2/d)."

ABBREVIATIONS AND ACRONYMS

DNAPL	         Dense Non-Aqueous Phase Liquid
DCE	         Dichloroethylene
MCL	         Maximum Contaminant Level
PCE	         Perchloroethylene or Tetrachloroethylene
1,1,1-TCA	 1,1,1-Trichloroethane
TCE	         Trichloroethylene
U.S. EPA	 United States Environmental Protection Agency
USGS	         United States Geological Survey

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