§ Ms. Walley
To ask the Secretary of State for the Environment, pursuant to the answer of 4 April,Official Report, column 669, if the source of the solvent affecting groundwater at the Blewbury borehole in south Oxfordshire has been identified.
§ Mr. Heathcoat-Amory
[holding answer 15 May 1990]: No definite source of the carbon tetrachloride found in groundwater at the Blewbury borehole has yet been identified. Work is continuing in order to discover the origins of this contamination.