Fecal coliforms identified in commercial oyster beds during routine testing led the Pierce County Health Department to sample effluent from the 16 waterfront homes in Gig Harbor, Wash. All were within a mile of the oyster farm. The agency found two wildcat sewers on adjoining lots. A two-bedroom residence had a 1,000-gallon homemade concrete tank with apparently no bottom. A three-bedroom residence had a 750-gallon precast tank. Both discharged 75 feet into Puget Sound.The small lots left no room for compliant solutions. Designer Robert E. Goodman in Lakewood, Wash., coordinated with Andrew Gunia of A Advanced Septic Services Inc., in
