Dewaal and Associates is a small, diverse, family oriented professional engineering firm offering services throughout the State of TN. We are a design civil-environmental engineering firm handling a wide range of land development related engineering services. We have special expertise in environmental permitting, low impact design and erosion control. We also provide expert witness services for drainage and sinkhole issues..
CIVIL AND ENVIRONMENTAL ENGINEERING
Rezoning-Master Planning
Commercial,Industrial or Institutional Site Plan Design
Residential Subdivision Design
Low Impact Infrastructure Design
Road,Drainage/Detention,Water and Sewer Design
State Construction General Permitting SWPPP and Erosion Control Plans
Expert Witness for Sinkholes and Drainage
Subsurface Sewage System Design (Conventional and Alternative)
Phase I Environmental Assessments
State & COE Environmental Permits
Other Permits