Client:
Osceola Rural Water System

May City, IA

Key Features:

  • Approximately 56 miles of rural pipeline ranging from 2″ through 12″ diameter.
  • Over 12,000 linear feet of trenchless installation.
  • Public right-of-way utilized for almost 8 miles of installation.

Key Experience:

  • County approval for pipeline occupancy of public right-of-way
  • Coordination with landowners for repair of private drain tile
  • Multiple BNSF railroad crossing

 

Pipeline Improvements

Osceola County Rural Water is a regional water provider whose service territory footprint covers an extensive four county area and over 1,200 square miles in Northwest Iowa. The water system’s continual growth eventually led to water use demands that could not be met by the existing distribution system. Using a calibrated hydraulic model, DGR identified numerous areas of the system needing pipeline improvements to maintain pressure. Additionally, the capacity of originally constructed transmission main had been depleted over the years.

The resulting 56-mile pipeline project was designed, permitted, bid, installed, and started up in less than two years from the project’s inception. The pipeline improvements will serve to accommodate Osceola County Rural Water’s ever growing water demands well into the future.

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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
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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
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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
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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