REPAIR OF LANDSLIDE, MERCER ISLAND
A Mercer Island residential property was affected by a landslide following heavy rains. This slide came close to undermining an existing storm catchbasin, an outfall line, and a modular block retaining wall. The slide was repaired using an anchored pipe pile retaining wall. This retaining wall was backfilled primarily with geofoam to reduce the loads that the wall had to withstand.