Specifications include, but are not limited to: General/Mechanical – Digester Upgrades – Subgrade utility locating, installation of E&S controls, site clearing, selective demolition, installation of sludge piping main and related appurtenances, instrumentation installation, installation of new blower system and diffusers, installation of air lift blower system, installation of new cover system, bypass pumping, concrete pads, site restoration, and successful startup. Sludge Tank Rehabilitation – temporary holding tank and pumping system, installation of new hatches, concrete restoration and new interior coating. Contract No. 2020-02 Electrical – Generator Replacement – Selective electrical demolition, electrical modifications, installation of new generator and ATS, generator enclosure installation, electric service tie-in, Variable Frequency Drives, instrumentation wiring and connections, conduits, duct banks, control modifications, and successful startup.