§ Dr. David Clarkasked the Secretary of State for Energy (1) what studies the Central Electricity Generating Board has performed to assess the environmental impact of the operation of various systems of flue gas desulphurisation; if he will list those systems which have already been investigated by the board and those which it still intends to investigate; and when he or the board intends to publish the results of these studies;
(2) on what date the Central Electricity Generating Board commenced investigations into the environmental impact of various systems of flue gas desulphurisation for use at coal-fired power stations; and if he will outline the criteria which the board have applied in its studies;
(3) what studies the Central Electricity Generating Board has performed to investigate the environmental impact of the operation of (a) the limestone/gypsum and 154W (b) the Wellman-Lord systems of flue gas desulphurisation (FGD) for Drax B power station; what investigations have been performed by the board in these areas; what results have been yielded; and what is currently the board's favoured option for FGD at Drax B.
§ Mr. Michael SpicerThese are matters for the Central Electricity Generating Board and I shall ask the chairman to write to the hon. Member.