A three-bedroom cottage sold after the owner agreed to replace the dry well before the closing date. Despite a catch basin, the bowl-shaped lot across the road from Lee Brook in Southbury, Connecticut, acted like a stormwater retention pond.Mark Lancor, P.E., principal engineer at DYMAR in Southbury, designed the replacement system. “While all the topography slopes toward the proposed drainfield, the worst was the steep hill from the brook to the field,” he says. “Controlling runoff was major.”The only cost-effective technology that fit the site was Mantis Double-Wide 58 treatment modules (Eljen). Even so, Lancor’s design required exemptions to two
