The Village of Black Creek retained Robert E. Lee & Associates to prepare plans and specifications for the addition of a second sludge storage tank to the existing wastewater treatment plant. Due to population growth and expansion of a local food processing company, the wastewater treatment plant needed additional sludge storage. To address sludge storage, a second one million-gallon sludge storage tank was constructed. The sludge storage tank includes a re-circulation pump and multiple nozzles to provide mixing.