American Concrete Industries septic, septic tanks, leech field, septic systems, inexpensive, sewage, sewer, manholes, solids, waste, leach field, box culverts, aerobic, waste, catch basin , sewage, environmental, environment, environmentally sound, technology, sewer system Beginning as a small family-owned concrete business in Auburn, Maine, then expanding to Veazie and on to the greater state of Maine, the company produces concrete steps, …