The City of Flint Water Pollution Control selected Commercial Contracting Corporation to act as General Contractor for the renovation and upgrades to their influent system. The Influent Structure and Battery A Grit rehabilitation project included the bypassing of the Influent Structure, internal and external concrete repair of the Influent Structure, severing and plugging the existing interconnection between Grit Battery A and B, installation of sluice gates in the Influent Structure, installation of cured-in-place pipe and a flow meter on the Grit Battery A influent piping. The construction work also included a new grit classifier building for Grit Battery A, as well as the removal and installation of new grit pumps, piping, valves, installation of new grit classifier, rehabilitation of existing grit tanks and associated electrical improvements, SCADA, concrete, demolition and sitework. CCC self-performed the concrete work while managing multiple sub-contractors.