A 400 mw coal fired power plant is burning coal that contains 250 ppb of mercury. the coal firing rate is 550000 lb/hr and the flue gas flow rate is 2.2 million scfm. the mercury standard that must be met is 0.015 lb/GWh of goss energy outut . calculate the overall mercury caoture percentage that is required to meet this standard. if the wet scrubber can remove 65% of the mercury that comes into it what removal efficency is needed