The construction of the TP 15-6 and TP 15-7 boreholes, including the structures, on the Trois Ponts site, near the town of Hagen. The drilling and catchment on the Trois Ponts site must be built continuously and successively. Consult the work schedule for the entire Three Bridges project. The construction of the drilling platforms for the new wells is carried out, after consultation with all the parties concerned, by a civil engineering company specially mandated by the contracting authority upstream of the drilling and catchment construction work.

The construction of the TP 15-6 and TP 15-7 boreholes, including the structures, on the Trois Ponts site, near the town of Hagen. The drilling and catchment on the Trois Ponts site must be built continuously and successively. Consult the work schedule for the entire Three Bridges project. The construction of the drilling platforms for the new wells is carried out, after consultation with all the parties concerned, by a civil engineering company specially mandated by the contracting authority upstream of the drilling and catchment construction work.