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Professional Engineering Services Facilities Plan and Predesign Pump Station 240 Capacity Improvements


Location
South Dakota
Publication Date
05/10/2019 11:02 AM EDT
Closing Date
05/24/2019 03:00 PM EDT
Issuing Organization
City of Sioux Falls
Solicitation Number
Description

Specifications include, but are not limited to: Pump Station 240 Improvements: PS 240 currently has a design firm capacity of 3.5 MGD. The recommended future capacity is 18.6 MGD. Improvements anticipated in the existing pump station to accommodate the capacity improvements include the installation of new pumps, process piping, structural modifications/penetrations, and connections to existing process piping. Controls integration will be completed by City staff and heavily coordinated during design and construction. Miscellaneous improvements may include lighting upgrades, generator improvements, electrical, surge tank improvements, and odor control improvements. Force Main—30-inch diameter force main: The 2016 study recommend installing a 30-inch force main from PS 240 to the existing WRF. Conceptual alignments have been completed. The selected consultant will be asked to review and further refine the alignment based on easement acquisition, environmental review, established street grade lines, permitting, etc., during the preliminary design process. Equalization Basins: The Master Plan recommends constructing a 2.75 MG equalization basin on the existing PS 240 site to accommodate projected flows through 2066. No concept layouts of the proposed equalization layout have been completed. Intermediate “Booster” Pump Station: In 2018, the City of Sioux Falls explored additional options to serve the ESSS and Basins 27, 28, and 31. The purpose of the research was to review options to delay or build project phases to ultimately save costs. Details of this review is provided in the support documents. The City is interested in reviewing an additional option which could include the construction of a “Booster” pump station located on the future force main alignment. The purpose of the Booster Station would be to reduce overall risk, capital, operation, and maintenance costs.

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