City of Hull
- Two multi-cell Submerged Aerated Gravel Reactor (SAGR) cells for ammonia removal
- Ultraviolet disinfection for E. Coli removal
- System designed to operate effectively during winter months.
- The system design utilized existing treatment components to save the City construction cost.
- The components are designed to work during cold winter months while minimizing operator time on site.
Wastewater Treatment Facility
Designed a SAGR system to be utilized as a polishing step following the City’s aerated lagoon system. The system includes a synthetic liner, aeration lines, rock media, an insulating mulch layer, control structures, and related piping.
Following the SAGR system, a UV disinfection system eliminates bacteria. Also designed a standby generator and related system controls for the SAGR and UV equipment.
- Electrical Power
The City of Sioux City needed a large diameter trunk sewer to carry flows from new residential development and future development on the east side of town to the existing Southeast Morningside Lift Station.
Sioux City, IA
Street Lighting Improvements
The City replaced the old lighting system with a modern LED based system to reduce operating cost. Decorative style lighting units were used, which enhanced the aesthetics of the downtown area, and match what had been utilized in other parts of the city.
Pump Station & Storage Reservoirs
The new Edgerton Pump Station (EPS) was constructed to facilitate bringing purchased water from Lewis & Clark Regional Water System (L&C) to the LPRW system.
Box Culvert Bridge Replacement
DGR Engineering worked with the SWO and BIA staff to design an economically feasible replacement for the deficient bridge structure.
Northeast South Dakota
New Airport Development
DGR led the design and construction phase engineering for the development of a new $30 million airport. Tasks included all phases of design and construction engineering activities.
Sioux County, IA
Turbine Control System Upgrade
This project included full removal and replacement of the existing control panels within the turbine building control room.