Abstract: The present invention relates to a fluid retention station for receiving a fluid that may be washed, flushed or drained from a vehicle and retaining the fluid. The station includes a plurality of layers for providing a floor to overlie existing terrain and includes at least a berm pad layer and a porous layer. The berm pad layer contains a floor and walls which provide a fluid tight enclosure. The porous layer overlays the berm bad layer and receives the fluid and allows the fluid to flow through to the berm pad layer. The porous layer removes any contaminants too large to pass through the porous layer or which have an affinity for a surface of the porous layer. A ground pad layer may also be used to underlie the berm pad layer. In addition, a track layer may be used to overlay a portion of the flooring to protect it from the vehicle or other equipment.