Client:
City of Superior

Superior, IA

Key Features:

• Individual septic tank with effluent pumps at each home
• Discharge effluent to City of Estherville 6 miles away
• STEP system design to eliminate need for main lift station

Key Experience:

• Negotiated sewer rates as a bulk customer, with Superior’s rates tied to Estherville residential rates
• Continued operational support to assist new city staff after project completion

Low Pressure Collection System

Analyzed collection system alternatives and treatment alternatives. Designed a septic tank effluent pump (STEP) system for Superior’s residents. The STEP system reduced street surface disturbance and was lower cost than a gravity sewer system. The STEP system also eliminated need for a main lift station and backup generation.

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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.

Site Development
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.

Sanitary Sewer Rehabilitation
Rembrandt, IA

Wastewater Treatment Facility

MBBR technology was chosen based on cost, operational flexibility and most importantly, limited land availability.

Wastewater Treatment Facility
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.

Floodplain Analysis
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.

Distribution Conversion
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.

Street & Utility Improvements
Sioux City, IA