§ Mr. DonohoeTo ask the Secretary of State for Transport if he will make a statement indicating what is the total annual weight and volume of benzene emissions from petrol-driven vehicles for the latest period for which statistics are available; and what percentage of total atmospheric benzene such emissions represents.
§ Mr. NorrisThe latest available figures from 1991 show that benzene emissions from vehicle exhausts account for some 39,250 tonnes per year, or 78 per cent. of total atmospheric emissions. Evaporative emissions of benzene from petrol vehicles accounts for some 3,350 tonnes per year, or 7 per cent. of total atmospheric emissions.