District 2 Water Reclamation Facility South Headworks Rehabilitation

a. Removal of existing channel covers b. Removal of existing slide gates and hand gates c. Removal and/or placement of Mechanical Screening systems out of the rehabilitation limits including local control station, conduits, ultrasonic level detector, and screening conveyance system. All equipment removed shall be treated with care and stored/packed to be protected from the elements. d. Removal of existing lining materials, where present, and blasting/cleaning of existing concrete to sound materials e. Removal of existing concrete wall and wall sleeves at selective locations shown in the Drawings f. Concrete repairs to interior channels, construction of channel plate seats, block-outs for replacement gates and concrete wall replacement as detailed in the Drawings. Existing wall sleeves shall be replaced with D.I. materials as Base Bid and 316 S.S. materials as Additive Alternate No. 1. The north and south walls will be removed and replaced if Additive Alternate No. 1 is authorized. g. Lining of the structure’s interior channels (bottom, walls, and underslab) following completion of the concrete repairs h. Installation of 316 SS channel plates with support beams and aluminum grating at specific locations shown on the Drawings upstream of the Mechanical Screens h. Installation of 316 SS channel plates with support beams and aluminum grating at specific locations shown on the Drawings upstream of the Mechanical Screens k. Deck lighting removal and replacement l. Existing electrical room rehabilitation and lighting replacement m. Clean all existing electrical room walls and ceiling and coat along with interior piping n. Screening control panel modifications with additional field improvements (alarm horn, safety cord, HWL floats); and o. Miscellaneous improvements shown on the Drawings.

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, Instrumentation and Control for 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.