The work involves the construction of a new sludge digester, mixed sludge tank, sludge control building, electrical room, and service tunnel. The supply and installation of various pumps, a spiral heat exchanger, a low pressure sludge gas membrane gasholder, and digester mixers will also form part of the work. Site works for the project include a temporary access road, ground improvements for structural foundations, excavation, grading, drainage, and asphalt paving.