The potential ground-water problems resulting from wood waste landfills are exemplified by a case study in the Turner area which is located southeast
of Salem, Oregon (see Figure 1 ). During the summer of 1972 an abandoned gravel borrow pit 10 to 12 feet (3 to 4 meters) deep and from 2 to 3 acres (about 1 hectare) in area was filled with wood
wastes including approximately 3 ,000 tons (2,700 tonnes) of hemlock (Tsuga heterophyla) bark (see Figure 2). Pollutants subsequently leached from the wood wastes and grossly contaminated a number of downgradient domestic water supplies, rendering them nonpotable