Heavy clays and restrictive set-backs rendered an acre lot unacceptable for a conventional onsite permit, putting the plans for building a vacation home on hold for a couple in Hollywood, S.C.They contacted Robert Gross, P.E., of Beaufort Group LLC in Beaufort, S.C., an engineering firm that specializes in alternative treatment designs. Working with Gross, the couple selected a peat-fiber biofiltration pretreatment system because it can handle intermittent usage and the maintenance requirements are minimal.State code specifies that alternative systems must have a replacement drainfield. As space was limited, Gross selected a subsurface discharge drip-dispersal system. Upon reviewing the plans, the







