Laguna Treatment Plant Filter Valves and Actuators Replacement and Aeration Basins Improvements

The improvements will generally consist of the following: Valve and actuator replacement at the gravity filters; replacement/rehabilitation of low-pressure air piping, appurtenances and diffusers at the aeration basins and associated channels; rehabilitation of mixed liquor and settled sewage channels.

Water Treatment Plant, Renovation.

Division 02 -	Existing Conditions, Geotechnical Investigations, Subsurface Drilling and Sampling.
Division 03 -	Concrete, Concrete Reinforcing, Cast-in-Place Concrete, Precast Concrete.
Division 04 -	Masonry, Unit Masonry.
Division 05 -	Metals, Structural Metal Framing.
Division 06 -	Wood, Plastics, and Composites, Rough Carpentry.
Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection, Weather Barriers.
Division 08 -	Openings, Doors and Frames, Windows, Hardware, Glazing.
Division 09 -	Finishes, Flooring, Painting and Coating.
Division 10 -	Specialties, Signage, Safety Specialties, Lockers, Flagpoles.
Division 11 -	Equipment, Laboratory Equipment.
Division 12 -	Furnishings.
Division 13 -	Special Construction.
Division 14 -	Conveying Equipment, Lifts.
Division 21 -	Fire Suppression, Fire-Extinguishing Systems.
Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Air Terminal Units.
Division 26 -	Electrical, Instrumentation and Control for Electrical Systems, Power Distribution Units, Lighting, Interior Lighting, Emergency Lighting, Exterior Lighting.
Division 27 -	Communications, Data Communications, Audio-Video Communications.
Division 28 -	Electronic Safety and Security, Electronic Access Control and Intrusion Detection, Video Surveillance, Fire Detection and Alarm.
Division 31 -	Earthwork, Site Clearing, Grading, Earthwork Methods.
Division 32 -	Exterior Improvements, Flexible Paving, Curbs, Gutters, Sidewalks, and Driveways, Fences and Gates, Irrigation, Planting, Turf and Grasses.
Division 33 -	Utilities, Water Utilities, Water Utility Distribution Piping, Water Utility Distribution Equipment, Disinfecting of Water Utility Distribution, Water Utility Storage Tanks, Wastewater Utility Pumping Stations, Storm Drainage Utilities, Electrical Utilities, Communications Utilities.
Division 40 -	Process Integration, Water Process Piping, Instrumentation and Control for Process Systems.
Division 41 -	Material Processing and Handling Equipment, Bulk Material Processing Equipment, Bulk Material Conveying Equipment, Bulk Material Feeders, Conveyors, Cranes and Hoists.
Division 44 -	Pollution and Waste Control Equipment, Odor Treatment Equipment, Water Pollution Control Equipment, Water Pollution Containment and Cleanup Equipment.
Division 46 -	Water and Wastewater Equipment, Common Work Results for Water and Wastewater Equipment, Water and Wastewater Preliminary Treatment Equipment, Water and Wastewater Chemical Feed Equipment, Water and Wastewater Clarification and Mixing Equipment, Water and Wastewater Secondary Treatment Equipment, Water and Wastewater Advanced Treatment Equipment, Water and Wastewater Residuals Handling and Treatment.