German impacts, page-383

Test drilling in Graben-Neudorf reaches depth of 700 meters

https://www.tiefegeothermie.de/news/probebohrungen-graben-neudorf-erreichen-700-meter-tiefe

Quotes: "Drilling work for the test boreholes in Graben-Neudorf has been underway since May 15, with the aim of obtaining meaningful data on the geological conditions in the subsurface."

"The two general contractors Huisman Geo and Ed. Züblin AG have been commissioned to carry out the test drilling."

""All values indicate that the water reservoir under Graben-Neudorf is one of the hottest spots in the region," said project manager Sebastian Homuth of Deutsche ErdWärme.""

"According to Deutsche ErdWärme, the planned target depth of about 3.5 kilometers could be reached in probably three to four months. This is assuming an average drilling progress of 10 meters per hour."

"To ensure safety here, there are a total of seven groundwater monitoring systems that can measure changes and sound the alarm accordingly..."

"In addition, fiber optic cables had also been embedded in the cement body, which send signals if the cement shell is damaged."

"In addition, five vibration meters were mounted on the earth's surface according to the current specifications in the area, which record any vibrations in the subsurface."

"Interested parties can access the seismic events in the Upper Rhine Graben reported by the sensors via the Deutsche ErdWärme website."
https://www.deutsche-erdwaerme.de/seismisches-monitoring/

"Nevertheless, opponents of the project, such as the citizens' initiative (BI) Tiefengeothermie Graben-Neudorf/ Waghäusel, fear radioactive contamination of the groundwater as well as the occurrence of seismic events and increased noise pollution in the course of the drilling work."

Any translation with deepl.com.