Riet Ii Lake Waterworks, Lot 1: Civil Engineering Tender - 139871801

Procurement Summary

Country: Switzerland

Summary: Riet Ii Lake Waterworks, Lot 1: Civil Engineering

Deadline: 31 May 2026

Posting Date: 21 Apr 2026

Other Information

Notice Type: Tender

TOT Ref.No.: 139871801

Document Ref. No.: 271843-2026

Competition: ICB

Financier: Self Financed

Purchaser Ownership: Public

Tender Value: Refer Document

CPV Classification

45000000 - Construction work

Purchaser's Detail

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Tender Details

Riet II lake waterworks, lot 1: civil engineering The RWSG supplies around 150, 000 people and numerous companies in the Lake Constance region to St. Gallen. Due to increasing water needs, a lack of redundancies and existing studies, the RWSG is planning to build a new one Seawater works next to the Riet high-pressure pumping station in Goldach to ensure the long-term regional water supply. The construction of the new building was divided into several lots. The subject of this tender is the civil engineering lot. This The tender includes the following services in particular: - Earthworks, including excavation and filling work - Professional disposal of contaminated sites - Securing the construction pit using sheet pilings, longarines, sprouts - Water retention using filter wells and Wellpoint systems. and treatment (PFAS-contaminated water) - Creation of in-situ concrete piles - Drainage of clear and dirty water - Plant line construction - Creation of surrounding areas and roadways, including trunking, terminations and Toppings There are numerous interfaces between the civil engineering lot and the other lots, especially with lot 2 (structural engineering/builder's work) and lot 3, seawater intakes with flushing boreholes). Close coordination between the companies involved is therefore necessary. Construction begins on August 10, 2026. The partial excavation pit for the flushing drilling must be completed by September 30, 2026. The civil engineering work is carried out in stages until full...
Document Type: Contract Notice Contract Type: works Doc Title: Seewasserwerk Riet II, Los 1: Tiefbau Dispatch Date: 2026-04-19 Publish Date: 2026-04-21 Submission Date: 2026-05-31

Documents

 Tender Notice