A retaining wall 40 cm thick with variable height (thin-walled corner) is being built in the mountainous area. At the time of the geotechnical survey and design, there was no reservoir next to the retaining wall. Now, when they began to build, a pond has formed next to the support on one of the sites. The waters now flow downhill towards the wall, and, naturally, under the foundation. Construction has been suspended because the pit is filled with water. That is, the soils will float. I am a young specialist (I am working for the 4th month), but the project was designed by another person. I was tasked with giving an answer in the near future: events with minimal costs. I look on the Internet: clay, resinization, drainage system. Help me to understand. I am attaching an approximate drawing of this site. Soil - gritty soil of slightly weathered shale with loamy aggregate up to 30%, with individual sandstone boulders up to 10%. Seismicity - 9 points, freezing depth - 1m. Groundwater up to a depth of 4m is not exposed.