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The SE Sanitary Sewer Extension project provided sanitary sewer service to a previously un-serviced area southeast of Dell Rapids, SD. A significant portion of the project area was undeveloped with shallow quartzite bedrock which attributed to the lack of utility service provided to this area. Included with this project was a lift station, control panel and valve vault along with the installation of 3,000 feet of sanitary sewer and over 1,000 cubic yards of bedrock excavation. Also included in the project were water main and sanitary force main installation.
DGR Engineering assisted the City in securing funding for the project through preparation of a preliminary engineering report and facilities plan. Preliminary engineering services followed which included field survey and utilities data collection to develop the base plan and profile, as well as analysis for preliminary design and cost estimates for the project. DGR also completed the final design as well as construction plans and specifications for the project. Construction engineering services included bid letting services as well as construction staking, observation, and administration for the project.
In addition to doubling the capacity of the lift station by replacing the existing 7.5HP pumps with 15HP pumps, this project also addressed many deficiencies in the sludge collection, processing, and disposal operations.
First, the existing clarifier mechanism and effluent weir were replaced, and scum collection equipment was added to the existing final clarifier. Additionally, a new sludge processing building was constructed to house a new one-meter belt press and sludge cake conveyer. A sludge cake storage area was also built to allow the City to store the pressed sludge until it could be land applied in the Spring