Delivery of 1 piece. Test well for a planned new WW. In advance, an AB was sunk to 64.00 m below GOK using the air-lift drilling method and to 110.00 m below GOK using the RKR core drilling method.

Sinking the test well 1 for the planned new waterworks using air lifting - drilling method with 800 mm Ø. After reaching the final depth of 107 m below GOK, wound wire filters made of stainless steel and solid pipes made of KV plastic made by Noresta as well as a DN 65 Norip monitoring pipe were installed. The filter section was then gravelled, a clay barrier with Quellon HD was poured and the annulus up to GOK was filled with a clay powder cement suspension. Finally, intensive sand removal and the power pumping test were carried out. A well shaft and the conveyor system will only be installed after the experimental operation has been completed.