§ Mr. RedmondTo ask the Secretary of State for the Environment what are the most recent figures and those for five and 10 years ago on the levels of acidification in rainfall(a) in Doncaster, (b) the three counties of Yorkshire and Humberside and (c) nationally.
§ Mrs. Virginia BottomleyThe data requested are provided only for 1988 in the table. Prior to 1986 no data are available for the region and there are insufficient to calculate a representative United Kingdom average. The Doncaster value has been interpolated from nearby rural stations which may not be representative of an urban area.
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Annual mean precipitation weighted acidity in rainfall in u eq H+/litre Data region u eq H+/litre pH United Kingdom 25 4.6 Yorkshire and Humberside 58 4.2 Doncaster 73 4.1