ECM Modular Walls & Specialty Construction provides retaining walls and foundation solutions to customers in Georgia, Tennessee, North Carolina, South Carolina and Florida. ECM is an authorized dealer and supplier of the Helical Pier Foundation System and VERSA-LOK wall systems. VERSA-LOK Mosaic retaining walls are the only random-pattern system that can build walls up to 40 feet high. VERSA-LOK units can be used to create curves, corners, stairs, columns and freestanding walls. VERSA-LOK units ECM s retaining wall systems are used in retention ponds, lakes, stream shorelines, storm channels and ocean walls. ECM company was founded in 1995 and is located in Atlanta.