Construction

Upcoming Construction Plans

• Install new walls and ring beam at the West Holding Tank.
• Install new Pre-engineered Metal Building for the Biosolids Building & Cake Loadout.
• Repair east holding tank upper walls and construct new roof.
• Refurbish DAF 1 and 2 into the new sidestream treatment system.

Work Completed

October 2023

• Procured the polymer manhole, additional valves, ductile iron piping, and other mechanical items, centrifuges, Velodyne polymer feed equipment, Vogelsang rotary lobe pumps, additional R.E. Pedrotti instrumentation, boilers, deaerator skids and light fixtures.
• Installed odor control yard piping.
• Completed additional vinyl ester coating on equipment pads.
• Completed installing rebar and poured the north section of the Upper Deck.
• Continued installing the burnished block upper wainscot.
• Began installing the CMU walls at the Upper level electrical room.
• Installed most of the Velodyne polymer skids at the Polymer area.
• Installed the boilers and DA Tank skids.
• Continued installing piping and ductwork at the Boiler Room.
• Installed the rotary lobe screen pumps at the Sludge Pump Room.
• Completed pouring the Acid Scrubber Pad.
• Installed lighting and conduit at the Pre-THP Cake room.
• Poured the operating floor of the Cake Loadout structure.

September 2023

• Procured additional valves, ductile iron piping, and other mechanical items, JMS sludge silo materials, Velodyne polymer feed equipment, primary pad mounted switches, World Water Works Sidestream equipment, Vogelsang rotary lobe pumps and additional R.E. Pedrotti instrumentation.
• Formed and poured the Primary Switch pad and set the new switches.
• Started up the relocated existing sludge transfer pump.
• Continued installing rebar and setting forms for the Upper Deck and completed the middle slab pour.
• Continued installing brick veneer around the Biosolids Building, installed CMU at the south
• Biosolids Building stairwell, began installing the burnished block upper wainscot.
• Installed additional sludge screening piping at the Polymer area.
• Installed piping and ductwork at the Boiler Room.
• Installed the THP Cooling Tower and fan.
• Continued working on screened sludge piping at the Sludge Pump Room.
• Installed piping at the Utility Tunnel.
• Started forming and rebar installation at the Acid Scrubber Pad.
• Completed emergency work to convert the East Holding Tank to a temporary sludge storage tank.
• Began demo at the West Holding Tank roof due to the collapse and performed structural inspection of the walls.

August 2023

• Procured additional masonry materials, additional structural and miscellaneous steel, additional valves, ductile iron piping, and other mechanical items, JMS conveyors, Velodyne polymer feed equipment, Evoqua gas membrane equipment, and World Water Works Sidestream equipment.
• Worked on Sludge Phase 4 & 5 work including completing the piping and temporary wiring associated with relocating the existing sludge transfer pump.
• Continued installing rebar and setting forms for the Upper Deck and completed the first slab pour.
• Continued installing the brick veneer around the Biosolids Building.
• Completed removing debris from the West Holding Tank from the roof that failed.
• Installed vinyl ester coating for the FRP tank pads at the polymer area.
• Installed sludge screening piping at the Polymer area.
• Installed the FRP storage tanks.
• Installed the THP Cooling Tower support steel.
• Worked on installing the sludge cooling loop piping at the THP Pad.
• Installed pipe supports at the Utility Corridor.
• Worked on the Acid Scrubber Pad and under slab utilities.

July 2023

• Procured the Odor Control Pad and Waste Gas Flare pad reinforcing steel, brick materials, structural and miscellaneous steel, electrical cable, additional valves, ductile iron piping, stainless steel piping and other mechanical items, HVAC duct accessories, R.E. Pedrotti instruments and Varec gas safety equipment.
• Relocated the fire hydrant near the THP pad.
• Worked on Sludge Phase 4 & 5 work including relocating the existing sludge transfer pump, installed temporary piping for the relocated pump and rerouted the supernatant lines.
• Poured the invert in the new Sludge Wetwell.
• Started installing hatches on the Upper Deck.
• Continued installing rebar and setting forms for the Upper Deck.
• Worked on some storm drain lines south of the Biosolids Building.
• Started installing the brick veneer around the Biosolids Building.
• Continued removing debris from the West Holding Tank from the roof that failed.

June 2023

• Procured Sidestream reinforcing steel, Sulfuric Acid Chemical Feed System, FRP grating, structural and miscellaneous steel, additional valves, ductile iron piping and other mechanical items, R.E. Pedrotti instruments and Varec gas safety equipment.
• Completed the balance of the Operating Floor concrete walls.
• Completed installing the Upper Deck shoring and began installing rebar.
• Completed the Sludge Wetwell water tightness testing.
• Worked on several yard piping lines, including the sludge lines from the Biosolids Building to the THP, sludge lines from the Utility Corridor to the Sludge Wetwell, sludge feed line from the EQ tank to the Sidestream area and some storm drain lines south of the Biosolids Building.
• Continued forming and pouring the pedestals at the Cake Loadout, placed the gravel fill and started forming and installing rebar at the operating level slab.
• Started work on installing the West Holding Tank manways and demoing the roof.
  

May 2023

• Procured additional ductile iron piping and other mechanical items, bar joists & metal decking materials, two FRP polymer storage tanks, Sidestream instrumentation and Mezzner panels, and two Huber In-Line Sludge Screens.
• Continued forming and pouring the Operating Floor walls.
• Continued installing the Upper Deck shoring.
• Completed the Elevator Shaft masonry walls at the Operating Floor.
• Worked on repairing the existing Elevator Shaft walls.
• Continued work on the Pre-THP silo erection.
  Placed the concrete fill at Sidestream Reactor No.2.
• Continued electrical rough-in at the Cambi equipment.
• Worked on several yard piping lines, including the sludge lines from the Biosolids Building to the THP, sludge lines from the Utility Corridor to the Sludge Wetwell and the sludge feed line from the EQ tank to the Sidestream area.
• Continued forming and pouring the pedestals at the Cake Loadout.

April  2023

• Procured additional ductile iron piping and other mechanical items, masonry materials, four FRP polymer storage tanks, Sidestream mixing equipment and additional I&C instruments.
• Continued forming and pouring the Operating Floor walls.
• Began installing the Upper Deck shoring
• Started installing masonry walls at the Operating Floor.
• Installed the Pre-THP Centrifuge Feed pumps and Pre-THP Cake pumps
• Continued working on the Pre-THP silo erection.
• Continued electrical rough-in at the Cambi equipment.
• Completed forming and pouring the East Holding Tank ring beams
• Continued forming the short walls and columns at the Cake Loadout.

March 2023

• Final design was completed.
• Procured additional ductile iron piping and other mechanical items, procured some fabricated structural steel, Neenah cast iron grating and embeds, five progressive cavity pumps and the balance of the Upper Level reinforcing steel.
• Formed and poured the balance of the Operating Floor columns for the Solids Building.
• Continued forming and pouring the walls for the Solids Building.
• Installed the two Sludge Coolers on the THP pad.
• Continued working on the Pre-THP silo erection.
• Completed erecting the THP canopy.
• Continued electrical rough-in at the Cambi equipment.
• Continued forming and pouring the East Holding Tank ring beams.
• Worked on forming the short walls and columns at the Cake Loadout.

February 2023

• Procured additional ductile iron piping and other mechanical items, procured the bridge crane hoist, two FRP polymer storage tanks and several I&C components.
• Completed the masonry work associated with the relocated Elevator Control Room on the Admin Building. 
• Formed and poured additional Operating Floor columns and walls.
• Installed the Pre-THP Cake Silos structural support steel.
• Began erecting the THP canopy structural support steel.
• Continued electrical rough-in at the Cambi equipment.
• Continued forming and pouring the East Holding Tank ring beams.
• Worked on underslab drainage piping at the Cake Loadout area.
• Removed the existing DAF 1 dome.

January 2023

• Procured additional ductile iron piping and other mechanical items, procured the bridge crane, additional Pre-Engineered Metal Building component and Vaughan chopper pumps and mixing systems.
• Formed and poured additional Operating Floor columns and walls.
• Worked on install drain piping at the Biosolids Building basement and Operating Floor.
• Continued electrical rough-in at the Cambi equipment and continued forming and rebar installation at the East Holding Tank ring beams.
• Completed the underslab drainage piping from the Cake Loadout area.
• Completed additional demo at the Holding Tank Room.
• Worked on removing the existing equipment from DAF 1 & 2.

August-November 2022

• Solids building ground floor suspended slab.
• East holding tank roof demolition.
• Sludge wet well base slab and walls.
• Thermal Hydrolysis Process (THP) structural slab on grade.
• North parking lot.
• Cambi equipment arrived for the THP system.
• Foundation work began for the cake storage and unloading structure.

June/July 2022

• North and south shear walls to include shoring and decks above the solids building basement.
• Pile cap installation for the polymer tanks on the operations floor level.
• Wet well overflow piping installed underground from the existing vault to the wet well riser locations.

April/May 2022

• Helical pile installation in the truck loadout area.
• Helical pile caps in the Biosolids basement.
• Shoring in East Holding Tank in preparation for roof demolition.

February/March 2022

• The east holding tank has been cleaned out.
• Selective demolition has been completed in DAF 1 and DAF 2.

January 2022

• Digester feed switched from east holding tank to DAF 3.
• East holding tank cleaning has started in preparation for modifications.
• Building demolished and cleanup wrapping up.

November/December 2021

• Temporary building placed around the relocated and refurbished belt presses.
• Solids Building demolition continues with sorting debris and hauling off site to be recycled.
• Demolition of gas storage tank cover and mechanisms for possible reuse for equalization in new sidestream treatment process.
• Temporary facilities installed for digester microaeration pilot.
• New boiler system installed to provide heat to the Admin Building.
• Installed test piles to evaluate foundation requirements for new Solids Building.

October 2021

• The smoke stack is gone!
• Boilers to provide heat to the Admin Building were installed just in time for winter.
• Concrete pads for temporary dewatering facility were installed.

August/September 2021

• Asbestos removal from solids building incinerators.
• Removal of the inner brick and asbestos layers in the incinerator smoke stake.
• Trailer park (lay down area).
• Temporary belt filter presses (BFP) hooked up and running.
• Temporary solids rerouting from DAF 3 to the temporary BFPs.
• Temporary power has been rerouted to the Administration Building.
• Selective demolition has started on the Solids Building.
• The pad has been poured for the radio tower control building.
• The radio tower has been erected.