Dr. ThomasTo ask the Secretary of State for the Environment what information he has on the microbial destruction method for polychlorinated biphenyls developed by the Canadian National Institute of Scientific Research, at Pointe Claire, Montreal in Canada; and what are the implications of this development for future import of Canadian origin PCB wastes for incineration in the United Kingdom.
§ Mrs. Virginia Bottomley[holding answer 19 October 1989]: This process is one of several under development for the biological treatment of dilute halogenated organics including PCBs. It is not an alternative to high temperature incineration of concentrated PCBs.