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Construction Update 10: Major Milestones Achieved with Oxidation Ditch, Clarifier, Headworks, and Dewatering Buildings


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Aerial view of the construction progress on the aerobic digester and dewatering building, showing nearly completed poured concrete walls and a clean worksite.

This week, Rice Lake Construction made major progress on constructing the Oxidation Ditch, the aerobic digester and dewatering building, and the Clarifier. Crews are building the Oxidation Ditch walkway and constructing the anaerobic digester walls, with work including formwork and curing processes. The aerobic digester and dewatering building is nearing completion, with most walls poured. The Clarifier system is also advancing, with a newly completed scum pit. Lastly, the Headworks project continues to move forward, with new walls being formed and poured.

Our office remains open during regular hours — Monday through Friday from 9:00 AM to 3:00 PM. Our office will be closed for Thanksgiving next Thursday.

Crews Construct Oxidation Ditch Walkway and Anaerobic Digester Walls

An aerial view of a construction site featuring the Oxidation Ditch with its circular concrete walls partially built, surrounded by ongoing work and equipment, including cranes and shoring materials.

An aerial view of a construction site featuring the Oxidation Ditch with its circular concrete walls partially built, surrounded by ongoing work and equipment, including cranes and shoring materials.

The first photo showcases the formwork for the elevated deck of the Oxidation Ditch. This elevated deck will serve as the main walkway for maintenance and inspections throughout the lifespan of the Oxidation Ditch. The second photo features the poured walls of the anaerobic digester, with curing blankets in place to maintain the concrete's temperature during the curing process.

Aerobic Digester and Dewatering Building Nears Completion

Aerial view of the construction progress on the aerobic digester and dewatering building, showing nearly completed poured concrete walls and a clean worksite.

The aerobic digester and dewatering building is coming along nicely, with nearly all the walls poured.

Clarifier Scum Pit Completed

Aerial view of a clarifier system under construction, showing a newly poured circular scum pit filled with water. Nearby, workers and construction materials are visible, surrounded by excavation work, safety barriers, and adjacent tanks.

The scum pit for the Clarifier has been constructed and poured.

Headworks Progressing with New Walls Poured

An aerial view of a construction site showing a large excavation with concrete walls and floor. Construction workers are visible inside the excavation, and there is a large excavator parked nearby.

The Headworks project is progressing, with additional walls being formed and poured.

What's next?

Next week will be a short week, so we will post updates for the following week on December 5th. Over the next two weeks, RLW will be busy with several key activities. The Headworks will see rebar installation and form setting for additional walls, while plumbing and electrical work will be prepared for future slab placements. In the Oxditch area, elevated forms and shoring will be set for upcoming pours. The aerobic digester will be prepared for water testing after Thanksgiving. Our gravity main and manholes will undergo vacuum testing with JVA onsite. Lastly, the Clarifier Splitter piping will be installed.

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