Method, system and apparatus relating to combustion turbine power plants with exhaust gas recirculation

A method of controlling a power plant (9) that comprises a working fluid and a recirculation loop (10), wherein the power plant (9) includes a combustor operably connected to a turbine, the method including the steps of: recirculating at least a portion of the working fluid through the recirculation loop (10); controlling the power plant (9) such that the combustor at least periodically operates at a preferred stoichiometric ratio; and extracting the working fluid from at least one of a first extraction point (75) and a second extraction point (76) positioned on the recirculation loop during the periods when the combustor operates at the preferred stoichiometric ratio.