Contaminated groundwater in the 200W Area of the Hanford Site is being treated ex situ by the 200W Pump-and-Treat (P&T) Facility and the subsurface plume is under hydraulic containment. The 200W P&T Facility removes several contaminants of concern from groundwater, as well as nitrate. Groundwater treatment capacity at the facility is currently constrained by the biological treatment of nitrate. In FY19, preparation of a 200W P&T Optimization Plan proposes to bypass all nitrate treatment to (1) allow the facility to operate at its original design capacity of 2500 gal/min, (2) provide the option for increasing capacity to 3750 gal/min, and (3) enable reliable injection of treated effluent water back into the subsurface. Nitrate will continue to be treated through blending of water within the aquifer.