Lancaster, PA – Soil testing for a proposed new academic center revealed subsurface soil erosion, karst activity, soft to very soft soil zones, voids, and rock ledges. Seven test borings and 90 supplemental rock probes were performed within the proposed building footprint. The results indicated a
Perryville, MD – CGS performed compaction grouting for the stabilization of Greenbank Road. Improper placement of backfill from the construction of a sanitary sewer line caused significant on-going settlement of the roadway. The sewer line trench ranged from 15 to 20 feet below the roadway surface.