Pacific Foundation utilized deep cement mixing at the sand Island WWTP in Honolulu to provide a water tight excavation over 20 feet below the water table in very challenging soils.
The Sand Island Wastewater Treatment Project was a major undertaking that required a unique approach to overcome the challenging ground conditions which were very different than the surrounding area in Honolulu and Waikiki Beach. Sand Island had a core layer at nine feet and a sandstone layer at 20-25 feet that were both extremely hard. To address these conditions, a lot of engineering and creativity were required to come up with a solution that was unique to the job. The project required a much larger drill rig, a Bauer BG 40, and a second rig, a Bauer BG 33, to successfully treat the site.
Watch the full video to learn more about the project!
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