The work shall be as follows: Construction and equipping of a new 500,000 gallon 50-ft diameter prestressed concrete digester; Furnishing and installing a 160-kW cogeneration system with integrated digester gas cleaning system; Improvement to the existing digester heating system; Yard piping associated with the above work; Electrical and Instrumentation and Control Work associated with the above work; Demolition work associated with the above work.