Westside Water Reclamation In-Plant Pump Station and Headworks - Design-Build

Influent flow to the Westside WRF is pumped through a series of force mains that are fed by multiple lift stations. The force mains combine into a single 36-inch diameter force main on the Westside WRF property and ultimately discharge into the elevated pretreatment structure. The pretreatment structure is approximately 35-feet above grade, adding nearly 15 psi of pressure to the system. It is the City’s desire to reduce static pressures at lift stations, thereby reducing strain on the force mains. The Pretreatment structure includes screening via bar screens and cyclonic (free) vortex grit removal. During the Wastewater Master Plan, both screening and grit removal scored low with regards to mechanical operation, electrical/SCADA condition, and maintenance intensity. Additionally, both processes were identified to be hydraulically limited to flows less than the permitted capacity. It is the City’s desire to improve these processes to aid in the overall efficiency of the treatment process.

Division 03 -	Concrete.
Division 04 -	Masonry.
Division 05 -	Metals.
Division 06 -	Wood, Plastics, and Composites.
Division 07 -	Thermal and Moisture Protection.
Division 08 -	Openings.
Division 09 -	Finishes.
Division 10 -	Specialties, Signage, Toilet, Bath, and Laundry Accessories, Fire Protection Specialties, Fire Extinguishers, Storage Specialties.
Division 11 -	Equipment.
Division 12 -	Furnishings.
Division 14 -	Conveying Equipment, Scaffolding.
Division 21 -	Fire Suppression.
Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC).
Division 26 -	Electrical.
Division 27 -	Communications, Data Communications, Voice Communications, Audio-Video Systems.
Division 28 -	Electronic Safety and Security.
Division 31 -	Earthwork.
Division 32 -	Exterior Improvements, Fences and Gates, Turf and Grasses.
Division 33 -	Utilities, Common Work Results for Utilities, Water Utility Distribution Equipment, Water Utility Pumping Stations, Wastewater Utility Pumping Stations, Sanitary Utility Sewerage Force Mains.
Division 40 -	Process Integration, Water Process Piping.
Division 45 -	Industry-Specific Manufacturing Equipment.
Division 46 -	Water and Wastewater Equipment.