City of Pierre

Pierre, SD

Key Features:

  • 115 kV breaker-in, breaker-out bus design
  • One 33.6 MVA, 115/12.47 kV transformer
  • Designed for the addition of a future transformer

Key Experience:

  • Design of a 115-12.47 kV substation
  • Coordination with WAPA
  • Integration of the substation into existing transmission and distribution systems

New Substation

The project included design and construction administration services for a new 115-12.47 kV substation that was integrated into the City’s existing 115 kV transmission loop and 12.47 kV underground distribution system.  DGR Engineering was responsible for all portions of the project, from site layout planning and major material procurement to final checkout of the protection and controls.

Design of the substation required adherence to WAPA’s 115 kV relaying and protection standards and compliance with FAA siting rules as the site was located nearby the end of an existing airport runway.

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