City of Pella

Pella, IA

Key Features:

  • 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

Key Experience:

  • Design and coordination for cutover and expansion while keeping existing substation energized.

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.

Featured Projects

  • All
  • Aviation
  • Civil
  • Electrical Power
  • Survey
  • Wastewater
  • Water

Fuel System, Terminal, Hangars

Design and construction services for support facilities at the new Sioux County Regional Airport. 

Fuel System, Terminal, Hangars
Sioux County, IA

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.

New Airport Development
Sioux County, IA

Runway/Taxiway/Electrical Systems

DGR Engineering collaborated with a long-standing airport engineering partner at the Watertown, SD Regional Airport to provide electrical design and construction services for the airport including runway and taxiway lights, lighted signs and airport electrical systems upgrades.

Runway/Taxiway/Electrical Systems
Watertown, SD

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. 

Pump Station & Storage Reservoirs
Edgerton, MN

Sanitary Sewer Rehabilitation

DGR Engineering has experience in sanitary sewer rehabilitation including: CIPP sewer main lining, service line grouting or lining (top hat), structure rehabilitation, and other related techniques.

Sanitary Sewer Rehabilitation
Ellsworth, Balaton & Hendricks, MN

Site Development

DGR performed the boundary and topographic surveying as well as the site design of school building addition as a subconsultant.

Site Development
Rock Rapids, IA