§ Mr. DobsonTo ask the Secretary of State for the Environment if he will give figures for each region's estimated methane emissions in 1988 by emission source consistent with the United Kingdom figures given in table 2.12 of the latest "Digest of Environmental Protection and Water Statistics."
§ Mr. TrippierThis information is not available.
§ Mr. DobsonTo ask the Secretary of State for the Environment (1) if he will give figures for nitrogen dioxide concentrations recorded at each of Warren Spring laboratory's 11 sites in the latest available year;
502W(2) if he will give the number of occasions hourly average tropospheric ozone concentrations in excess of 6Oppb were recorded by each of his Department's 19 sites in the latest available year;
(3) if he will give figures on the acidity of rain recorded at each of his Department's 32 sites for the latest available year.
§ Mr. TrippierUnited Kingdom monitoring network data for 1989 are given in tables A (NO2), B (ozone) and C (acidity of rain). Of the NO2sites, all except Cromwell road and Stevenage are in the EC NO2directive monitoring network set up to meet the requirements of EC directive 85/203/EEC.
WSL also operates three rural NO2monitoring sites.
Results for a full year are not yet available. Measurements made so far indicate concentrations are of the order of 10 to 15 parts per billion by volume (ppb) annual average and 30 to 50 ppb 98th percentile of hourly averages.
The locations of the sites are described in the digest of environmental protection statistics, No. 12, 1989 and in the second report of the United Kingdom review group on acid rain, 1987, copies of which have been placed in the Library of the House.
Table A—NO2: Site Annual average 98th percentile (ppb) (ppb) Central London 37 81 West London 42 112 Glasgow 26 61 Manchester 25 61 Walsall 29 58 Billingham 21 57 Cromwell Road 43 100 Stevenage 24 55
Table B—ozone: Site Exceedances of 60 ppb hourly means Stevenage 85 Central London 74 Sibton 212 Aston Hill 143 Lullington Heath 401 Strath Vaich 28 High Muffles 184 Lough Navar 74 Yarder Wood 360 Ladybower 173 Harwell 170 Bottesford 82 Bush 63 Eskdalemuir 99 Great Dun Fell 204 Glazebury 129
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Table C—acidity of rain—acidity of deposited rain adjusted for rainfall amount Site Precipitation weighted mean acidity (microgramme equivalents per litre) Achanarras 25 Strath Vaigh Dam 13 River Mharcaidh 20 Glen Dye 36 Balquhidder 20 Whiteadder 35
Site Precipitation weighted mean acidity (microgramme equivalents per litre) Eskdalemuir 20 Redesdale 32 Loch Dee 15 Cow Green Reservoir 23 Bannisdale 24 High Muffles 55 Thorganby 84 Jenny Hurn 64 Driby 47 Wardlow Hay Cop 37 Beddgelert 15 Bottesford 48 Plynlimon 14 Stoke Ferry 40 Preston Montford 36 Llyn Brianne 19 Tycanol Wood 18 Woburn 37 Flatford Mill 35 Compton 25 Barcombe Mills 15 Yarner Wood 20 Goonhilly 19 Lough Navar 10 Hillsborough Forest 13 Isle of Man 24
§ Mr. DobsonTo ask the Secretary of State for the Environment if he will give figures for each region's estimated carbon dioxide emissions in 1988 by emission source consistent with the United Kingdom figures given in table 2.11 of the latest "Digest of Environmental Protection and Water Statistics".
§ Mr. TrippierThis information is not available.
§ Mr. DobsonTo ask the Secretary of State for the Environment if he will give figures for sulphur dioxide concentrations in each region in the latest available year.
§ Mr. TrippierThe basic urban monitoring network data, for April 1988 to March 1989, analysed by region, are given in the table:
Region Number of sites with valid results Concentration—microgrammes per standard cubic metre of air SO2 Smoke Scotland 13 27 12 North 12 30 16 North West 25 39 14 Yorkshire-Humberside 21 43 21 East Midlands 11 43 20 West Midlands 8 37 20 Wales 6 19 11 East Anglia 2 28 12 London 11 41 17 South East 9 31 12 South West 5 23 11 Northern Ireland 4 46 27 United Kingdom 126 36 16
§ Mr. DobsonTo ask the Secretary of State for the Environment if he will give figures for each region's estimated nitrogen oxides emissions in 1988 by emission source consistent with the United Kingdom figures given in table 2.6 of the latest "Digest of Environmental Protection and Water Statistics."
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§ Mr. TrippierEstimates of emissions of nitrogen oxides are not made by region.
§ Mr. DobsonTo ask the Secretary of State for the Environment if he will give figures for each region's estimated sulphur dioxide emissions in 1988 by emission source consistent with the United Kingdom figures given In table 2.3 of the latest "Digest of Environmental Protection and Water Statistics."
§ Mr. TrippierEstimates of emissions of sulphur dioxide are not made by region.
§ Mr. DobsonTo ask the Secretary of State for the Environment if he will give figures for each region and each county for the estimated(a) acidity of rain and (b) wet deposited acidity in 1988, consistent with figures given in tables 2.5 and 2.6 of the latest "Digest of Environmental Protection and Water Statistics."
§ Mr. TrippierThis information is not available.