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Construction of the North Core Pipeline project consisted of approximately 70 miles of pipeline from near Ft. Pierre to Philip, four ground storage reservoirs, and four pump stations. The project included 12-inch through 16-inch diameter pipe, valves, stream crossings, and miscellaneous appurtenant work. The pipeline route followed the route of Highways 14/34 with some cross-country segments. Stream crossings were installed using a directional boring method as to avoid disturbance to fish and wildlife. The pipeline system was designed for over 1,700 gpm and brought water service to rural customers and small communities in western South Dakota.
This project consisted of water main replacement on St. Paul Avenue from Benson Road to 39th Street North in Sioux Falls, South Dakota. Work included water main replacement, sanitary manhole repair, replacement of surfacing over trenches, and boulevard restoration. The water main replacement successfully utilized both open trenching and directional drilling methods. Sanitary manhole repair included reconstructing manhole benches and inverts along with installing manhole external frame seals.
This project consisted of installing 8” water main beginning approximately 1,700 feet southwest of the Great Bear entrance road and continuing 3,700 feet to the northeast. This project included water main installation, asphalt removal and replacement, and site restoration and grading. Also included in this project was the grading and paving for a turn lane approximately 600 feet long on Rice Street for the proposed TJN site.
This project consisted of installing approximately 4,500 feet of 16” DIP water transmission main on Six Mile Road between 10th Street and 26th Street in Sioux Falls, SD. This work included water main installation, directional boring 24” steel casing across SD Highway 42 and under a large box culvert, pavement replacement, and restoration.
The project included the construction of three new mainline 13.8 kV circuits on the City’s distribution system to increase capacity and reliability. The circuits were built in underground fashion; two extending from the City’s substation near the airport to the downtown area, and one extending from the City’s substation near the airport to the event center. DGR services for this project included the initial study work, project development, engineering design, permitting, construction administration, and resident construction observation.