Laserfiche WebLink
h <br /> Adsorbed Volume- Mass Calculations <br /> CHAPIN BROTHER INVESTMENTS, INC. 1.766 Monte Diablo Avenue, <br /> Stockton, California <br /> The average TPH-g (gasoline) concentration was estimated by adding all detected TPH-g <br /> concentrations and dividing by the number of detected analytes The following samples indicated at <br /> detection of TPH-g C136-20/24, C137-24/28, C138-20/24, C139-20/24 and CB10-20/24/28 The <br /> average TPH-g concentrations (reported as milligrams per kilogram, mg/kg)were as follows from <br /> lowest to highest 1 6 mg/kg to 550 19 mg/kg, these concentrations average to 127 5 mg/kg which <br /> is equivalent to 0 000125 grains per gram (unitless) <br /> Using 127 5 mg/kg as the "average" gasoline concentration in the area of contaminated soil, the <br /> volume of gasoline is <br /> weight of soil • average concentration 4 132,576,000 g • 0 000125 = 168,985 g of <br /> gasoline <br /> Converting grams of gasoline to volume of gasoline (gallons) using density of gasoline (0 74) <br /> 168,985 g of gasoline— 0 74 g/cm' =228,358 cm3 <br /> 228,358 cm3 • (1 gallon--3,785 cm3) z 60 gallons of gasoline <br /> r� 60 gallons of gasoline = 502 lbs or 22$ kilograms of gasoline <br /> I <br /> /� Advanced GeoEnviron mental,Inc. <br />