Water Reclamation Facility Primary Digester Cleaning and Improvements

The project consists of: Cleaning Primary Digester No.1 at the City of Billings Water Reclamation Facility. This work includes but is not limited to: hydro-washing digesters, removing and dewatering sludge, removal of hair, grease, plastics, soil, struvite, sediments, and all other debris present in Primary Digester No.1. Additionally, all three sets of the roof supported gas lances will be replaced. Contractor is responsible for removal of existing gas lances, fabrication of new gas lances (replacement in kind), and installation of new gas lances. The mixer access opening will also need to be modified to change from a 2-piece hinged access door to a 1-piece bolted access cover. After cleaning, gas lance replacement, and mixer access opening modifications, the seal around the perimeter of the tank roof (between the carbon steel roof and concrete wall) shall be removed and resealed, and the carbon steel roof shall be sandblasted and recoated with paint.

Sewage Treatment Plant, Renovation.

Division 02 -	Existing Conditions, Demolition, Selective Demolition, Selective Interior Demolition.
Division 06 -	Wood, Plastics, and Composites, Rough Carpentry, Finish Carpentry.
Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection.
Division 08 -	Openings, Doors and Frames, Windows.
Division 09 -	Finishes, Plaster and Gypsum Board, Ceilings, Flooring, Painting and Coating.
Division 21 -	Fire Suppression.
Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution.
Division 26 -	Electrical, Lighting.