§ Mr. Gwilym Jones
There are currently four European directives on air quality which set mandatory and non-mandatory limits for lead, sulphur dioxide and suspended particles, nitrogen dioxide and ozone levels in the air.
In the last three years the relevant thresholds were breached at Government monitoring sites in Wales as follows:
Number of Exceedences Limit Site 1992 1993 1994 Taken on a daily basis: Ozone information Aston Hill 3 days 1 day 1 day threshold Cardiff 2 days — 1 day Taken on an annual basis: Guide value for SO2 Cwmgwrach Exc. — — Port Talbot Exc. — — Glynneath Exc. Exc. Exc. Taken on an annual basis: Guide value for suspended particles Wrexham — Exc. — Exc.= Exceeded the Guide values, based on the average daily readings taken over the year.
Further information is available in the environmental digest for Wales and the report "Air Pollution in the UK 1993–94", copies of which are in the Library of the House.