§ Mr. SedgemoreTo ask the Secretary of State for the Environment at how many sites air pollution levels are monitored.
§ Mr. Trippier[holding answer 24 November 1989]: Air pollution levels are monitored on behalf of the Department of the Environment, at 390 sites as follows:
Pollutant Sites Ozone: 17 Carbon monoxide: 6 Nitrogen oxides: 12 Acid deposition: 32 Atmospheric hydrocarbons: 2 Trace gases: 1 Atmospheric chemistry: 2 Smoke/sulphur dioxide Directive sites: 287 Sulphur dioxide: 7 Lead: 19 Multi-element sites, including lead: 5 Total 390 There are also monitoring sites under the aegis of other bodies.