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I have asked Tony Cameron, Chief Executive of the Scottish Prison Service to respond. His response is as follows:Work is under way to identify possible sites for new prisons in the central belt.

The Executive is satisfied with the monitoring procedures in place for measuring emissions from the Blue Circle factory at Dunbar and with the environmental and health and safety legislation which regulates the cement manufacturing process.

There is no evidence to indicate that higher levels of dioxins are emitted when recycled liquid fuel is used to provide energy in cement kilns compared with emissions from purpose-built incinerators. The use of this type of fuel in cement kilns is treated by the Scottish Environment Protection Agency (SEPA) as a process of co-incineration falling within the scope of the EC Hazardous Waste Incineration Directive. That directive requires a dioxin limit of 0.1 nanogrammes per cubic metre for hazardous waste incinerators. This is the same limit that SEPA applies to purpose-built incinerators.The recycling of waste products into fuels that are useable in processes such as cement production reduces the demand for raw materials and helps to conserve fossil fuel resources.

The current level of municipal waste incinerated in Scotland is around 2%. The National Waste Strategy provides the framework for waste management policy in Scotland and, through the development of 11 area waste plans, will determine the best practicable environmental options for future waste management. A major objective of the strategy is to reduce the reliance on landfill, moving instead to options higher up the waste hierarchy i.e. reduction, reuse, recycling, composting and energy recovery. It would therefore be inappropriate to implement a policy of decreasing the level of waste disposal by incineration.The Renewables Obligation (Scotland) consultation paper issued by the Executive on 3 August 2001 sets out the policy on energy-from-waste as a source of renewable energy. Following initial consultation the Executive proposes not to support the conventional incineration of municipal waste. New, cleaner thermal technologies such as gasification and pyrolysis will be supported where these fit in with an integrated waste management system. This would involve thermal treatment only of the residues left once separation, recycling and composting has been carried out first.Copies of the consultation paper are available in the Parliament's Reference Centre (Bib. no. 15597).

I propose to consult on the published review later this year.

This is a matter for the Scottish Environment Protection Agency. The information requested is not held centrally.

The use of substitute liquid fuel in a cement kiln is treated by the Scottish Environment Protection Agency as a process of co-incineration falling within the scope of the EC Hazardous Waste Incineration Directive. That directive requires a dioxin limit of 0.1 nanogrammes per cubic metre for hazardous waste incinerators.The World Health Organisation (WHO) does not set standards for emissions from processes. WHO standards for dioxins are in terms of "Tolerable Daily Intakes" or "TDIs". The main source of these intakes is our food. The WHO currently recommends a TDI of between 1 and 4 picogrammes of dioxins per kilogramme of body weight. The European Union's Scientific Committee on Food defines its recommended limits on intake in terms of a "Tolerable Weekly Intake" which is currently set at 14 picogrammes of dioxins per kilogramme of body weight. For the UK, limits on intake are currently subject to consideration by the Food Standards Agency's Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment.

The Scottish Executive maintains regular contact with the Department of Trade and Industry with regard to the administration of Regional Selective Assistance and where necessary, discusses individual cases which may impact on employment in different regions of the UK.

There have been a number of recent meetings between Scottish Borders Council and officials of the Scottish Executive and associated agencies at which various routine business matters have been discussed.