Where:
E = mercury emissions in lb/hr;
Cs = concentration of mercury in the stack gas, in grains per dry standard cubic foot (gr/dscf);
Qs = volumetric flow rate of the stack gas, in dry standard cubic feet per hour; and
K = conversion factor for grains (gr) to pounds (lb), 1.43 * 10-4.
40 C.F.R. §63.11646