Albert Frei Cutoff Wall
Project Location: Henderson, Colorado
In order for this project to be successful, Hall-Irwin had to import a significant amount of supplemental fines to assure that the proper soil/bentonite backfill mixture was achieved. This resulted in the best possible soil-bentonite cutoff wall (otherwise known as a slurry wall). The design-build of the cutoff wall was approximately 90,500 SF. The average depth of the wall was 41 FT with a maximum depth of 60 FT. To ensure the cell was properly sealed off, Hall-Irwin’s team dug into bedrock to a minimum 3 FT key.