Geological works to decommission an observation borehole and construct and document a Quaternary groundwater intake in Graby

Summary

The tender covers the decommissioning of the existing P1 observation borehole in Graby and the construction and documentation of the approximately 90 m deep O1 Quaternary groundwater intake borehole. The works include preparatory activities, installation of the filter column, filter gravel and sealing, chlorination, cleaning and test pumping, hydrogeological and water-quality laboratory testing, borehole camera inspection, as-built surveying, preparation of hydrogeological documentation, and site restoration and waste management. The contract duration is 2 months. Tenders will be evaluated on price (60%) and extension of the warranty period (40%). Bidders must demonstrate the required geological works experience and provide a suitably qualified team. The tender guarantee is PLN 3,000 and the performance security is 5% of the total tender price. The tender submission deadline is 1 September 2026 at 10:00.