Osceola Rural Water System
- 2,400 gpm water treatment plant for iron and manganese removal
- 1 million-gallon glass-fused steel ground storage reservoir
- Maintaining the use of existing facilities during the construction of the new water treatment plant on the same site
- Surface resistivity aquifer testing to efficiently pinpoint high capacity wells
Treatment Plant & Well Exploration
DGR Engineering (DGR) worked closely with OCRWS to design a new Water Treatment Plant (WTP) to target iron and manganese removal from a shallow groundwater source near the site. It was designed on the existing site to minimize the project footprint and avoid additional land purchase. The new treatment process includes aeration, detention, and filtration using a gravity filter arrangement, and will increase OCRWS’s treatment capacity from 750 gpm to 2,400 gpm.
Additional source water capacity was also needed to utilize the treatment capacity of the new WTP. DGR used a surface resistivity testing program to generate multiple snapshots of the aquifer depth and production capacity. The results of the graphs were verified with test drilling, and two new high capacity well sites were identified.
Increasing demands at the new WTP made additional on-site storage necessary. A 1 million-gallon glass-fused steel ground storage reservoir was constructed to accommodate these needs.
The total construction cost of the new WTP project was $7.8 million, which was financed using a combination of Iowa State Revolving Fund (SRF) loan and private funding through CoBank. The SRF funding included a forgivable loan for the generator equipment.
- Electrical Power
Box Culvert Bridge Replacement
DGR Engineering worked with the SWO and BIA staff to design an economically feasible replacement for the deficient bridge structure.
Northeast South Dakota
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.
Sioux County, IA
Turbine Control System Upgrade
This project included full removal and replacement of the existing control panels within the turbine building control room.
Wastewater Treatment Facility
City of Orange City, IA prepared for the future by adding a mechanical treatment facility to meet both capacity and compliance.
Orange City, IA
Water System Expansion
Tremendous demand for new service connections made this expansion project the largest ever undertaken by Kingbrook Rural Water, Inc.