Build Like a Champion
Tonn and Blank partnered with the University of Notre Dame to deliver sustainable construction of the Southeast Geothermal Plant and more than 500 feet of underground tunnels – critical infrastructure supporting the University’s commitment to achieve carbon neutrality by 2050. This 21,000 SF facility expands the campus chilled water system and serves as a physical plant for the Joyce South and RTOC geothermal wellfields, tying into existing tunnels beneath the East Stadium and Jordan Plant.
Working just steps from the iconic football stadium and in the heart of a busy campus, the project demanded precision, flexibility, and careful phasing to keep operations uninterrupted. Tonn and Blank developed and executed a three-phase construction plan that maintained pedestrian walkways, vehicle access, and event circulation throughout the year. From commencement ceremonies to football season, we sequenced excavation, tunneling, backfilling, and restoration to align with Notre Dame’s calendar, finishing each phase ahead of schedule.
The sustainable construction project also required significant earth retention measures, particularly adjacent to the Joyce Center and the Jordan Hall greenhouse, where excavation was performed within inches of existing structures. Despite these challenges, our self-perform capabilities brought control and efficiency to the job: Tonn and Blank placed more than 2,000 cubic yards of concrete for tunnels, foundations, and elevated slabs, while also self-performing carpentry, doors and hardware, and wood blocking.
As the building rose, crews coordinated closely with university-furnished subcontractors to integrate geothermal piping, HVAC, electrical, and fire protection systems. Sustainable features include a live green roof, designed with stone walkways and irrigation, that not only enhances the building’s aesthetics but also improves stormwater management, energy efficiency, and insulation.
