§ Mr. Ieuan Wyn JonesTo ask the Secretary of State for Wales if he will list those areas, by unitary authority, where air quality breached the limits set by his Department during 1997. [31742]
617W
§ Mr. Win GriffithsInformation is not available in the form requested. A summary of air quality information recorded at national automatic monitoring sites in Wales, during 1997, is presented in the table in the form of the national air quality descriptors—low' pollution,
Site Unitary authority Days 'low' Days 'moderate' Days 'high' Days 'very high' Data capture (%) Ozone Aston Hill Powys 340 28 0 0 93 Narberth Pembrokeshire 294 28 0 0 76 Cardiff Centre Cardiff 359 12 0 0 97 Swansea Centre Swansea 361 13 0 0 97 Port Talbot Neath Port Talbot 340 19 0 0 90 Nitrogen Dioxide Narberth Pembrokeshire 286 0 0 0 74 Cardiff Centre Cardiff 357 0 0 0 96 Swansea Centre Swansea 358 0 0 0 96 Port Talbot Neath Port Talbot 320 0 0 0 85 Carbon Monoxide Cardiff Centre Cardiff 348 0 0 0 94 Swansea Centre Swansea 358 0 0 0 96 Sulphur Dioxide Narberth Pembrokeshire 297 0 0 0 78 Cardiff Centre Cardiff 332 0 0 0 89 Swansea Centre Swansea 361 0 0 0 96 Port Talbot Neath Port Talbot 332 8 0 0 87 Particulate matter (PM10) Narberth Pembrokeshire 286 0 0 0 76 Cardiff Centre Cardiff 352 19 0 0 96 Swansea Centre Swansea 357 9 0 0 98 Port Talbot Neath Port Talbot 326 48 6 0 88