§ Mrs. Helen Clark
To ask the Secretary of State for Transport, pursuant to his answer to the hon. Member for South-East Cambridgeshire (Mr. Paice) of 6 March 2003,Official Report, columns 1155–56W, on pollution, what sources were used to calculate the cost of abatement of pollutants. 
§ Mr. Jamieson
The data presented in my answer were based on work from a number of different sources. Figures for the cost of emissions reduction from LPG260W vehicles were calculated using work carried out by the Energy Saving Trust as part of the Government's Powershift programme.
Figures for the costs of carbon reduction for biofuels were based on a range of life-cycle' CO2 values from the following published studies:CONCAWE (2002) Energy and Greenhouse Gas Balance for Biofuels for Europe—an update;L-B-Systemtechnik Consultancy (2002). Well-to-wheel analysis of energy use and the greenhouse gas emissions of advanced fuel/vehicle systems—a European Study; andMortimer, N.D, Cormack, P, Elsayed, M.A, and Home, R.E. (2003). Evaluation of the Comparative Energy, Global Warming and Socio-Economic Costs and Benefits of Biodiesel. Sheffield Hallam University.
The data on the local air quality emissions performance of bioethanol were drawn from the following research commissioned by the DfT:AEA Technology (2002) Ethanol Emissions testing.