Schnabel Engineering, Inc.

Lachel & Associates (Lachel) specializes in design and construction management services for tunneling and other heavy civil construction projects in the areas of transportation, water and wastewater infrastructure, and hydroelectric power. Our goal is to meet the needs of clients by providing fully integrated management and technical services that are objective, thorough, and effective. Geo/Environmental Associates, Inc. (GA), located in Knoxville, Tennessee, specializes in the design of tailings dams, waste disposal impoundments, landslide repairs, retaining structures, ground improvements, mined land reclamation design, and environmental restoration of mining sites.