Alden conducted several physical and computational hydraulic model studies for the Hartford Water Pollution Control Facility Wet Weather Expansion in order to ensure performance of the facility.   Focus areas included the influent headworks structure, the influent pump station, the combined effluent pump station, the CSO pump station, and air flow in the CSO tunnel system. 

Aan undistorted 1:6 scale model of the influent headworks structure to evaluate the flow patterns and water levels in the baseline configuration of the headworks as well as the flow distribution between the operating fine screen channels and operating grit channels, to determine the distribution of grit to the grit channels, and to derive and evaluate design modifications that would significantly reduce grit deposition and improve flow distribution between the channels.