§ Mrs. Curtis-ThomasTo ask the Secretary of State for the Environment, Transport and the Regions if he will give details of(a) the atmospheric-tests which have been 565W carried out by his Department in Crosby, (b) the test results and (c) the action which is being considered as a result; and if he will make a statement. [66709)
§ Mr. MealeThere are four Nitrogent Dioxide (NO2) Diffusion Tube Network sites in or near Crosby.
Grid reference Site name Site address East West Crosby 1N 39 Crosby Road North, Waterloo 3322 3985 Crosby 2N Sycamore Road, Waterloo 3322 3986 Crosby 3N 39 Elton Avenue, Waterloo 3314 3999 Bootle 2N 23 Norman Road, Bootle 3345 3971 A summary of the monthly NO2 concentrations for these sites, for calendar year 1997, is as follows. Concentrations are given in parts per billion by volume (PPb).
Monthy summary of nitrogen dioxide concentrations 1997 Number of exceedences and maximum for each month Site name Crosby 1N Location K Crosby 2N Location I Crosby 3N Location B Crosby 2N Location B January 43 36 — 34 February 24 14 15 22 March 35 18 15 23 April 33 22 19 20 May 32 21 14 16 June 36 17 13 15 July 27 12 7 13 August 29 20 11 14 September 26 20 14 20 October 35 25 19 26 November 44 32 28 36 December 34 23 — 26 UK Smoke and SO2 Network
Suspended particulate matter (as black smoke) and sulphur dioxide (as total acidity) are measured at one site in Crosby, CROSBY 3 situated at Merchant Taylor's School, Liverpool Road. The site is part of the UK Smoke and SO2 Monitoring network and has been in operation since 1979. It is in a predominantly residential (suburban) area. Mean concentrations of SO2 and smoke at this site for the year April 1997–March 1998 were 8Tgm-3 for smoke (British Standard calibration) and 18Tgm-3 for SO2. These values are below the UK means for the same period, which were 9Tgm -3 and 21Tgm -3 for smoke and SO2 respectively, based on the whole network. A summary of the statistics for this period is as presented.
566W
Code 85503
Site name Crosby 3 Region North-West Authority Sefton Grid reference East 3321 North 3990 Summary of smoke data 1997–98 Valid days 49 Max. gap 15 Arith. Mean 8 Median 5 98th percentile 35 Max. day 84
Code 85503 Site name Crosby 3 Region North-West Authority Sefton Grid reference East 3321 North 3990 Summary of SO2 data 1997–98 Valid days 349 Max. gap 15 Arith. Mean 18 Median 20 98th percentile 40 Max. day 68 Abbreviations:
"Valid Days" denotes the number of valid days data obtained for the year.
"Max. Gap" is the maximum number of consecutive days for which no valid value was obtained.
"Arith.mean" is the arithmetic mean of all daily values.
"Median
"98th percentile" is the 98th percentile for all daily values.
"Max. Day" is the maximum daily value measured during the year. Further information and daily data up to September 1998, can be obtained via the World Wide Web, at DETR's Air Quality Archive at http://www.environment.detr.gov.uk/airy/aqinfo.htm.
The Government's policies with respect to improving air quality in the UK were published on 13 January, in the "Report of the Review of the National Air Quality Strategy". Copies of the report have been placed in the Library of the House.