..., they are of interest while discussing water levels, aquifers and the question of preventing active aquifer pollution. The area is considered to be stable tectonically and seismically, only few faults are observed in the margins of the area (2-3 km southwards). Stratigraphy Four formations were penetrated...

... feel that we have a reasonably good control of the ground water level. Measurements of the water level and of possible long-term settlements of the buildings usually starts a year before the actual work on the subsurface constructions. The methods used to obtain watertightness are: pre-grouting post...