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' MASS REMOVAL <br /> Sample Calculations <br />' Mass removed is calculated by averaging the concentrations between sampling events and <br /> multiplying by the gallons pumped between sampling events <br />' Co - concentration measured during sampling event "o" <br /> C, -- concentration measured during sampling event"," <br /> Go = cumulative gallons removed measured during sampling event"a" <br /> G, - cumulative gallons removed measured during sampling event"," <br /> The equation is <br />' Co + C, mg/1 G, - Go al lb 37851 <br /> 2 1 4 536 x 10 mg gal <br /> I <br /> Between 1119195 and 414196 total pounds of TPHg removed <br /> 28 + 23 325,565- 144,192 3 785 <br /> 2 4 536 x 10 <br /> N = 3 8593 = 3 8 pounds TPHg <br /> Notes <br /> mgll milligrams per liter <br /> gal gallon <br /> Ib = pound <br /> II = liter <br /> I <br /> r <br /> r <br />