City of Pella
- 6-position 69 kV ring bus
- Four 69 kV line terminals
- Two 69/12.47 kV transformers
- New 15 kV distribution switchgear lineup
- Interconnections with existing generation plant
- Design and coordination for cutover and expansion while keeping existing substation energized.
West Substation Conversion
DGR provided design, procurement, construction administration services for conversion of the existing substation needed to accommodate generation interconnection from the new Red Rock Hydro Project. Project increased area transmission reliability and local load serving capability.
The project required conversion of existing 69 kV single bus into a six-position ring bus. Required using existing equipment, relocating existing equipment, and installing new equipment. Required extensive design planning and outage coordination to keep existing high-voltage and control circuits energized throughout construction. Included full protection and control replacement.
- Electrical Power
Coordination between multiple entities to create a mutually satisfying layout of buildings, parking area, utilities and street access was a main element of the planning process.
Sioux City, IA
New Substation Construction
DGR assisted SMU in all aspects of the project, from initial evaluation, to design and financing, through final construction.
Turbine Control System Upgrade
The project included full removal and replacement of the existing control panels within the turbine building control room.
Building and site demolition, utilities and grading, two site geothermal well fields, site work
Sioux City, IA
Treatment Plant & Well Exploration
DGR Engineering (DGR) worked closely with OCRWS to design a new Water Treatment Plant to target iron and manganese removal from a shallow groundwater source near the site.
Fuel System, Terminal, Hangars
Design and construction services for support facilities at the new Sioux County Regional Airport.
Sioux County, IA