GEOTILL’s engineering staff has completed numerous planning and design projects involving water storage transmission and distribution systems. The projects have included pipes of various materials ranging in size up to 144-inches in diameter. Services included site and alignment investigations, failure analyses, hydraulic and pipe condition investigations, trench stability and support, seismic analyses, jacking pit design, dewatering, tunneling and microtunneling. Ground conditions ranged from soft mud with boulder obstructions to hard rock tunnels, and have included major river crossings.