CONVERSION FACTORS AND ABBREVIATED WATER-QUALITY UNITS

                Multiply                           By                   To obtain




           
                           meter (m)             3.281                   foot
                       kilometer (km)            0.6214                  mile
                square kilometer (km2)           0.3861                  square mile
                 cubic kilometer (km3)           0.2399                  cubic mile
                      centimeter (cm)            0.3937                  inch
                      millimeter (mm)            0.03937                 inch
                      micrometer (µm)            0.00003937              inch
                           liter (L)             1.057                   quart
                      milliliter (mL)            0.03381                 fluid ounce
                        kilogram (kg)            2.205                   pound, avoirdupois
                          metric ton          2205                       pound, avoirdupois
         cubic meter per second (m3/s)          35.31                    cubic foot per second
kilogram per square kilometer (kg/km2)           0.008924                pounds per acre


             Concentration unit                                          Equals
             


          milligram per gram (mg/g)                                      part per thousand
      milligram per kilogram (mg/kg)                                     part per million
          microgram per gram (µg/g)                                      part per million
           nanogram per gram (ng/g)                                      part per billion (109) 
           
           
     
             Concentration unit                                          Approximately* equals           
            
 
             
        gram per cubic meter (g/m3)                                      part per million   
         milligram per liter (mg/L)                                      part per million  
         microgram per liter (µg/L)                                      part per billion (109)                  
          nanogram per liter (ng/L)                                      part per trillion (1012) 
          





*At the concentrations encountered in this study, and considering the detection limits of the 
analytical methods employed, these units can be considered equal in the context of this report.


     Degree Celsius (°C) may be converted to degree Fahrenheit (°F) by using the 
        following equation:
       
                                       °F=9/5 (°C)+ 32.
                                      
 Sea level:  In this report "sea level" refers to the
National Geodetic Vertical Datum of 1929 (NGVD of 1929)--a geodetic
datum derived from a general adjustment of the first-order level nets
of both the United States and Canada, formerly called Sea Level Datum
of 1929.