Maryland Geotechnical Services at Geotill provides Geotechnical Engineering, Environmental Services, Subsurface Exploration, Drilling, Cone penetration test CPT, Construction Testing, Soil investigation, Soil testing, Insitu testing. Our goal is to work closely with the civil engineering design firms and DOT's geotechnical engineers. Geotill provides Instrumentation Geotechnical Services and design recommendations for shallow (spread footings and mat foundations) and deep (auger-cast, drilled pier, driven piles, aggregate columns, stone columns) foundation systems, and earth retention systems including drilled pier, sheet pile walls, slurry walls, braced excavations, segmental, soldier pile, soil nail, MSE retaining walls