Twin Brooks Water Facility Plan/Water System Improvements
Twin Brooks, SD

Twin Brook's existing water operator wanted to retire and it was difficult to find a new licensed operator for this type of part-time work. In addition, Twin Brook's existing wells were deteriorating. A Facility Plan was completed with the assistance of a Small Community Planning Grant and a funding from East Dakota Water Development District. The Facility Plan recommended connection to the nearby Grant Roberts Rural Water System, which offered better water quality and was willing to take over maintenance of the City's water distribution system. The City's wells were abandoned and 2,245 feet of 6-inch water main was installed to connect the community to the rural water system. The project also included a pressure reducing/metering building with chemical feed as well as meter pits at each of the 39 connections within the community. Twin Brooks was able to receive $349,400 in grant funding for the project to assist with the cost of Facility Plan preparation, engineering design, construction and construction observation, minimizing the financial burden on the residents in this small, rural community.

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Colton Main Avenue & First Street Utility Improvements
Colton, SD

The City of Colton set out to improve the existing infrastructure under two vital county roads that intersect in their community.  Undersized, cast-iron water main and vitrified clay pipe under Minnehaha County Routes 110 and 149 were in desperate need of replacement.  In addition, the City did not have a sufficient water main loop to provide the necessary flows in the event of a fire.  The geotechnical investigation revealed that the soils in Colton were low strength and unstable and thus recommended that all utility trench backfill be replaced and that sub-grade improvements be considered to extend the life of the roadway for two roads that carry significant agricultural and truck traffic.  Banner assisted in determining the most effective sub-grade treatment and found that soil cement stabilization was the most economical solution for the City.  The project also implemented recycled materials.  The existing surfacing and base course were processed-in-place to be reused as base course.  This provided the City significant construction cost savings.  Banner coordinated with SD DENR, BNSF Railroad, Minnehaha County, and the SD DOT to obtain the proper permits and approvals for the project.  Special services Banner provided included assisting the City in procuring additional funding that was necessary for the trench and sub-grade improvements.  Banner also held pre-construction public meetings to inform the public of the upcoming improvements and prepared monthly progress updates for public distribution.

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Viborg Utility Improvements
Viborg, SD

The City of Viborg completed improvements to their water distribution system and sanitary sewer collection system on various streets throughout the community. Water main replacement included replacing undersized and aging water mains along with the abandonment of an existing water main located under City Hall. The City also improved isolation zones within the distribution network with the addition of water valves in key locations. Sanitary sewer collection system improvements corrected inflow and infiltration (I/I) issues in the system. Street reconstruction was also completed as part of the project. Banner also assisted the City in preparing facility plans that were used to secure funding for the project.

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