§
Mr. Atkins
Annual average concentrations of black smoke, sulphur dioxide and nitrogen dioxide in Greenwich and surrounding sites are given in tables 1 and 2. As part of the expansion of the urban monitoring network a site was established in Eltham, Greenwich in 1993 which continually monitors 26 hydrocarbons. The provisional data for benzene and 1, 3 butadiene for the first four months of operation are presented in table 3. Annual emissions of smoke, sulphur dioxide and nitrogen dioxide between 1985 and 1991 are given in the Department of the Environment's 15th edition of the "Digest of Environmental Protection and Water Statistics", a copy of which is available in the Library of the House.
| Table 1 |
|
Greenwich1 |
Woolwich |
| Year |
Black smoke (ug/m3) |
SO2 (ppb3) |
Black smoke (ug/m3) |
SO2 (ppb3) |
| 1985 |
8.7 |
66.3 |
6.0 |
48.2 |
| 1986 |
8.0 |
47.1 |
6.0 |
47.1 |
| 1987 |
12.6 |
50.1 |
11.3 |
51.0 |
| 1988 |
12.8 |
58.7 |
10.5 |
63.8 |
| 1989 |
19.4 |
55.2 |
9.7 |
40.2 |
| 1990 |
16.8 |
50.5 |
10.2 |
47.3 |
| 1991 |
14.5 |
45.8 |
9.0 |
47.1 |
| 1992 |
11.2 |
36.2 |
6.6 |
36.0 |
| 1 Greenwich site: |
| West Greenwich branch library, Greenwich High road. |
| 2 Woolwich site: |
| Shrewsbury house, Rushmore Crescent. Plumstead, SE18. |
| 3 Parts per billion at 20°C and 1013 millibars pressure. |
| Table 2 |
| Year and site |
Annual average No2 (ppb) |
| 1991 |
|
| Shrewsbury house, Rushmore crescent. Plumstead SE18 |
34.0 |
| 1993 |
|
| (Kerbside), Greenwich town hall, Woolwich road, SE10 |
20.6 |
| Environmental curriculum centre, Bexley road, SE9 |
15.5 |
| De Lucy school, Cookhill road, Abbey Wood, SE2 |
16.3 |
| Shrewsbury house, Bushmoor crescent. Plumstead, SE18 |
13.7 |
262W
| Table 3 |
| Month/year |
Benzene (ppb) |
1,3 Butadiene (ppb) |
| August 1993 |
0.80 |
0.16 |
| September 1993 |
0.89 |
0.21 |
| October 1993 |
0.75 |
0.17 |
| November 1993 |
1.16 |
0.21 |