A sand aquifer consists of a median pore diameter of 0.232 mm. The fluid density is 1.003 x 10^{3} kg/m^{3} and the fluid viscosity is 1.15 x 10^{-3} N-s/m^{2}. If the flow rate is 0.0067 m/s, is Darcy's law valid? Describe the reason for your answer? Show all work.