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Drilling is planned using a rotary-percussion system to a depth of 120 metres: – the first 10 metres with a borehole diameter of 312 mm, cased with a steel tube of diameter 260 mm and wall thickness 6 mm; – the next 110 metres with a borehole diameter of 250 mm, cased with a steel tube of diameter 210 mm and wall thickness 5 mm (the final 18 metres will use a slotted pipe for water filtration). A gravity-based annular foundation of 15 m will be constructed. Compressed air cleaning of the well is also planned. The next step will be a well yield test lasting 24 hours, using equipment capable of pumping 10 m3/h to a height of 120 m, with flow and level monitoring. Well recovery monitoring and preparation of the corresponding final report are also planned. Once the well has been tested and the obtained yield verified as sufficient to meet the required flow rate, a full water quality analysis of the extracted water will be carried out in accordance with Royal Decree 3/2023, of 10 January, which establishes the technical and sanitary criteria for drinking water quality, its monitoring and supply. At the top of the well, a chamber measuring 1 m × 2 m internally and elevated 1 m above ground level will be installed; this chamber will also house the pump’s electrical control panel and the remote monitoring box. This chamber will be placed on a reinforced concrete slab measuring 3 m × 2 m and 0,25 m thick. A well protection perimeter measuring 8,4 × 7,4 m is planned.

ESPLACSP 20805530published on Contractació pública (Catalunya)

Machine translation. The official title is La perforació està prevista fer-la amb un sistema de rotopercussió en una profunditat de 120 metres: - 10 primers metres perforació de diàmetre 312mm i intubat d'acer de diàmetre 260mm i gruix 6mm. - 110 metres següents perforació de diàmetre 250mm amb intubat d'acer de diàmetre 210mm i gruix 5mm (els darrers 18 metres seran amb tub ranurat per al filtratge de l'aigua). Es realitzarà una fonamentació anular per gravetat de 15 m. També es preveu la neteja del pou amb aire comprimit. El següent pas serà l'aforament del pou durant 24 hores, per a això s'utilitzarà un equip amb capacitat per impulsar 10 m3/ha 120 m, amb control de cabals i nivells. També es preveu fer el control de la recuperació del pou i execució del corresponent informe final. Un cop aforat el pou i havent verificat que el cabal obtingut és suficient per a la demanda de cabal, es realitzarà una analítica completa de l'aigua extreta, segons especificacions del RD 3/2023, de 10 de gener, pel qual s'estableixen els criteris tecnicosanitaris de la qualitat de l'aigua de consum, el seu control i subministrament. A la part superior del pou es col·locarà una arqueta de dimensions interiors 1m x2m, elevada del terreny 1m, que albergarà també el quadre elèctric de la bomba i la caixa del telecontrol. Aquesta arqueta es col·locarà sobre una llosa de formigó armat de 3m x 2m i 0,25m de gruix. Es preveu un perímetre de protecció del pou de 8,4 x 7,4 m..

The facts

Place
Lleida, Spain
What is bought
Construction & building worksCPV 45231300
Estimated value
€49,357
Lots
1
Apply in
Spanish

In plain words

Ajuntament d'Alàs i Cerc, based in Spain, has launched a tender for construction and building works. The contract is estimated at €49,357. The whole job goes out as a single contract, so you need to be able to deliver all of it, either on your own or together with partners.

All bid documents must be written in Spanish and must arrive no later than 12 Nov 2026, 15:00.

Written from the facts of the notice. The official notice is the only binding text.

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