SPRINGFIELD CREEK LIFT STATION

Location:

SPRINGFIELD, NE

Client:

Hawkins Construction Company

Background

The Sarpy County and Cities Wastewater Agency (SCCWWA) is set to develop the backbone of a new sewer system to pave the way for developers in the southern portion of the county. The Springfield Creek Lift Station is just one part of the SCCWWA’s Phase 1A Project, a $97 million project including 17 miles of dual force mains, three lift stations, and a mile of gravity fed sewers. Upon completion, it will allow for the transport of wastewater from the City of Springfield to the City of Omaha’s Papillion Creek Wastewater Treatment Plant.

In February of 2023, Hawkins Construction Company contracted with Schnabel to install two intersecting circular secant shafts for the Springfield Creek Lift Station. As part of the project, Schnabel installed 51 columns drilling over 3,315 linear feet. The connecting shafts were to serve as the support of excavation as well as a one-sided form for the exterior walls of the cast-in place lift station. Hawkins also cored three breakouts in the shafts for pipes to be installed to the lift station.

Schnabel’s Solution

Schnabel faced a few challenges during both phases of the project. While drilling the secant shafts, running sands and artesian water pressures were encountered and required casing to be advanced far ahead of the drill tooling in addition to placing concrete via tremie methods. Prior to soil mixing, the excavation had already proceeded to the top of the problem soils, resulting in unstable bench conditions. This required crane mats and extra care to prevent tipping of the drill rig. Additionally, the infiltration of soils between the outside of the secant shafts and the connecting soil mixed areas created difficulties while excavating to insert the trench boxes. Schnabel’s Research & Development team quickly addressed the issue and helped to complete a permeation grouting program to seal any gaps in the finished product.

Results

Schnabel completed the second phase of work in October 2024, allowing Hawkins to meet their tight project deadline of substantial completion on the Springfield Creek Lift Station. Ultimately, this project will allow for the further development of surrounding land in Sarpy County and is projected to bring in over $15,000,000 in annual revenue and over 4,700 new jobs.

Quick Facts

Location

Springfield, Nebraska

Client

Sarpy County and Cities Wastewater Agency

Market

Wastewater

Work Performed

Secant shaft installation

Completion Date

October 2024

Duration

8 Months

Contract Value

$97 Million (Phase 1A)

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Quick Facts

Location

Client

Market

Work Performed

Completion Date

Duration

Contract Value

Springfield, Nebraska

Sarpy County and Cities Wastewater Agency

Wastewater

Secant shaft installation

October 2024

8 Months

$97 Million (Phase 1A)

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