---

Welsh Office

Answer

Mr. Ieuan Wyn Jones: To 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] Mr. Win Griffiths: Information 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, `moderate' pollution, `high' pollution, `very high' pollution. The breakpoint between `low' pollution and `moderate' pollution corresponds to the national air quality standards set out in the National Air Quality Strategy. _________________________________________________________________________________________________. Site Unitary Days `low' Days `moderate' Days `high' Days `very high' Data capture (%) authority 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 340 19 0 0 90 Talbot 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 320 0 0 0 85 Talbot 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 332 8 0 0 87 Talbot 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 326 48 6 0 88 Talbot _________________________________________________________________________________________________.

Secondary information

Type

Written question

Reference

31742; 307 c616-8W

Session

1997-98

Subjects

Air pollution Exhaust emissions Pollution control Monitoring Wales

Contains statistics

Yes