Specialty: General Contractor

Corval Group served as the general contractor for PURIS Proteins LLC’s new production facility in Dawson, MN. PURIS is an end to end non-GMO & Organic plant-based seed, ingredient, and food formulation company known for its pea protein isolate that is a key ingredient to many of their clients....
Corval Group was the general contractor responsible for nine pumping stations located through-out the Midwest. Corval’s own forces performed the concrete, structural steel, piping and equipment setting work. As General Contractor, Corval managed the electrical, fencing, and earthwork sub trades....
Corval Group was general contractor for the addition and renovation to Johnson Senior High School. The project added new offices and meeting spaces for staff and faculty, new restrooms in all common areas of the school, and new classroom space on the second floor. The renovation included re-roofing the...
Hastings Middle School Improvements project was completed over the summers and school year of 2019 and 2020. Corval was the prime GC for this $22 million project that included complete replacement and upgrades of the entire mechanical system. The entire school’s HVAC and Piping systems were updated with new...
Corval was the general contractor for a new precast addition to and renovation of the Minneapolis Pipefitters Joint Apprentice Training Committee (JATC) Training Facility. The completed project included lab space, renovated offices, new restrooms and classrooms, a mezzanine added to the existing building, a new service elevator, geothermal and...
Balance of Plant scope involved completing the piping system for the City of Duluth’s switch over from a city steam system to a city hot water system. Involved taking 18″ supply and return piping from tie-ins located utsid the main steam plant and running the remaining piping into the...
Corval was the prime mechanical contractor in charge of installing all equipment at Rahr Malting’s Malthouse #5. Installed equipment included Steep tanks, grain handling equipment, fans, ductwork, pumps and all piping. Rahr’s Shakopee production facility annually produces 460,000 MT of malt, making it the largest single site malt production...
In partnership with Ecolab & Greyback Construction, Corval Group began construction for this waste water treatment plant and will be finished in Summer 2011. The scope of this project includes adding process equipment, tanks, and a storage building to house new equipment. Technology includes biological reactor that degrades process...
Corval Group was the prime contractor for the replacement of the HVAC and electrical systems for St. Paul Public Schools. The work included new RTU’s,AHU’s, Air Cooled chilller, VAV’s & FTR and electrical service....