Additional explanations:

Delivery of 2 pieces. Exploration and measuring point drillings GWM 3383 and 3384 in the area of ​​the Moorburg Elbe dike 221 as air lifting drillings up to 309.00 m and 240.00 m below GOK with 350 mm Ø. The two boreholes were expanded with filter and solid pipes DN 65/125 made by Norip and, after filling the filter sections with glass balls over cementing pieces, each was grouted with a clay powder cement suspension up to GOK. Both GWMs were then sanded and pumping tests were carried out. The GWM 3383 had artesian conditions.