Denmark – Sea wall construction work – Udbud af hovedentreprisekontrakt vedrørende forstærkning af Ballum Dige

The Brede Ådalen Dike Association is a local association responsible for the maintenance and securing of dikes along Brede Å to prevent flooding of the adjacent agricultural areas and valleys. The work of the Brede Ådalen Dike Association therefore often consists of maintaining dike crowns and slopes to ensure stability against water pressure. In accordance with this, the Brede Ådalen Dike Association now wishes to have the existing Ballum Dike strengthened with clay and sand on the section from Rømø Dam and south to Vesterende, which totals approximately 7,500 meters, where the work will also include excavation and formation of a lake area in connection with the extraction of the sand and clay deposits used for Ballum Dike. On this basis, the Brede Ådalen Dike Association wishes to enter into a construction and installation contract ("the Contract"), which in broad terms will include the following works and their main quantities:

1. Milling of the vegetation layer on approximately 18.5 ha of dike (on the existing dike slope, foreland, and dike crown)

2. Excavation of 26.8 ha of vegetation layer and temporary deposition thereof on the existing dike foreslope, foreland, dike crown, and back slope

3. Excavation from the existing dike, transport, and incorporation of approximately 63,350 m3 of raw soil into the dike

4. Excavation from the existing dike and disposal of approximately 23,550 m3 of raw soil from the dike

5. Excavation from the lakes, transport, and incorporation of approximately 182,250 m3 of clay

6. Replacement of the vegetation layer and grass seeding on the new dike profile, 26.8 ha. This is supplemented by the transport of vegetation soil from the lakes

7. The necessary quantities of raw soil and clay for the project are extracted by the contractor in connection with the excavation of new lakes close to the subproject. The materials are transported to the dike and incorporated by the contractor. The contractor keeps the lakes dry in connection with the excavation work

8. Completion of the lake edges and re-establishment of affected areas around the lakes

9. Fertilization and grass seeding of all affected areas

All the areas where work is to be carried out are located at Ballum in Tønder Municipality. The clay to be used for the reinforcement is delivered as a client supply, the estimated value of which is approximately 15-16 million DKK. However, the transport of the clay itself will be covered by the works related to the Contract. In addition, a smaller supplementary purchase and delivery as well as the laying of suitable stable gravel or crushed concrete for the maintenance of interim roads and work roads from the excavation site to the dike incorporation sites will also be covered by the Contract. The Brede Ådalen Dike Association cannot provide electricity, but can be helpful. The works related to the actual dike construction must be carried out from March/April 2027 to October 2028 and may be carried out during the period from 04:00–18:00, provided that this does not conflict with other regulations, including the permit from the Danish Coastal Authority. In addition, it is expected that work on the excavation sites can begin approximately one month earlier, i.e. in February 2027. For the sake of dike safety, the contractor is obligated to pause the execution from October 2027 to February 2028, after which the work can be resumed. At the time of the publication of the tender, the Brede Ådalen Dike Association has not received final permission from the Danish Coastal Authority for coastal protection. The permit is therefore provisionally attached as an application and will be replaced by the final permit once it is received. The Brede Ådalen Dike Association expressly reserves the right to cancel the tender if final permission is not obtained. The Brede Ådalen Dike Association also expressly reserves the right to wait to enter into a contract with the winning bidder until final permission is obtained. Furthermore, the Brede Ådalen Dike Association expressly reserves the right to cancel the tender if the Brede Ådalen Dike Association does not receive the necessary financing from Tønder Municipality for the implementation of the project, and in this case, the Brede Ådalen Dike Association also expressly reserves the right to wait to enter into a contract with the winning bidder. The Brede Ådalen Dike Association has not divided the tendered construction and installation contract into subcontracts, as the Brede Ådalen Dike Association assesses that such a division would entail a number of inappropriate technical, legal, and practical interfaces with the resulting risk of increased transaction costs and risk exposure for the Brede Ådalen Dike Association (hereafter "Client"). In particular, the documents work description for workplace, work description for traffic regulation measures, Asphalt - AAB-SAB-P, AAB-SAB-P SOS and AAB-SAB Earthworks contain a detailed description of the tasks covered by the Contract. Any reference to standards shall be understood as a reference to the mentioned standard or equivalent. If the bidder does not meet the mentioned standard, but equivalent, the bidder must document in the tender that the offered solution on the relevant parameters is equivalent. The tender is carried out electronically using the tender portal www.udbuddet.dk. Bidders must therefore register as a license holder at www.udbuddet.dk. Registration can be done free of charge. Questions regarding www.udbuddet.dk should be directed directly to www.udbuddet.dk via the support function, which can be accessed via telephone +45 7022 7007. No remuneration is provided for the bidders' participation in the tender process. Bidders are encouraged to conduct a site visit of the section where reinforcement is to take place. This is particularly due to the fact that the construction and installation works covered by the tendered Contract are offered as a fixed price. This means that the contractor's remuneration is not adjusted, regardless of whether the quantities stated in the tender list, which form the basis for the fixed price, turn out to be different during the execution of the work. This is also the reason why the Client can make the 3D measurements, which form the basis for the quantities in the tender list, available for part of the tender material.