Client:
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.
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.
Featured Projects
- All
- Aviation
- Civil
- Electrical Power
- Survey
- Wastewater
- Water
Site Development
DGR Engineering (DGR) worked with the City and the project architect for all aspects of the project including topographic survey, site design, construction survey, construction observation and administration.
Sioux City, Iowa
Sanitary Sewer Rehabilitation
The project was bid and came in under budget. Manhole lids were raised to provide better access in some areas, and rehabilitation of the sewer system was completed to give another 50 years of life to the City’s much-needed infrastructure.
Rembrandt, IA
Wastewater Treatment Facility
MBBR technology was chosen based on cost, operational flexibility and most importantly, limited land availability.
Sanborn, IA
Floodplain Analysis
DGR employed a Geographic Information System (GIS) in conjunction with the U.S. Army Corps of Engineers to first determine the 100-year flood elevations and delineate the floodway boundaries.
Sutherland, IA
Distribution Conversion
Due to concerns with the age and condition of the structures, along with safety clearances to energized equipment and conductors, a project was undertaken to replace the old infrastructure with new underground lines and associated padmount equipment.
Redwood Falls, MN
Street & Utility Improvements
Morningside Avenue was reconstructed totaling approximately 1,300 linear feet. The project included new sanitary sewer, water main, storm sewer, fiber conduits, decorative street lighting, and 9-inch concrete paving with colored concrete sidewalks.
Sioux City, IA