 Within a few months of burying the PCBs, EPA found significant PCB air emissions at the landfill and 1/2 mile away, but citizens did not learn about this report for another 15 years.The 60,000 tons of PCB-contaminated soil were buried within about 7 feet of groundwater.Warren County's first independent scientist, Dr. Charles Mulchi, had predicted that the landfill would inevitably fail because of unsuitable soils and close proximity to groundwater.