29.—(1) The National Assembly must ensure that the information specified in Part 1 of Schedule 12 is obtained and collated.
(2) The criteria for aggregating data and calculating statistical parameters specified in Part 2 of Schedule 12 applies as respects ozone.
30. The Regulations set out in Schedule 13 are revoked in accordance with that Schedule.
Signed on behalf of the National Assembly for Wales under section 66(1) of the Government of Wales Act 1998(10)
D. Elis-Thomas
The Presiding Officer of the National Assembly
6 March 2007
Regulation 6
| Averaging period | Limit value | Attainment date | |
|---|---|---|---|
| Limit value for the protection of human health | Calendar year | 5 μg/m3 | 1 January 2010 |
For the purposes of this table, the maximum daily 8-hour mean concentration will be selected by examining 8-hour running averages, calculated from hourly data and updated each hour. Each 8-hour average so calculated will be assigned to the day on which it ends, i.e. the first calculation period for any one day will be the period from 17:00 on the previous day to 01:00 on that day; the last calculation period for any one day will be the period from 16:00 to 24:00 on that day.
| Averaging period | Limit value | |
|---|---|---|
| Limit value for the protection of human health | Maximum daily 8-hour mean | 10 mg/m3 |
| Averaging period | Limit value | |
|---|---|---|
| Annual limit value for the protection of human health | Calendar year | 0.5 μg/m3 |
| Averaging period | Limit value | Attainment date | |
|---|---|---|---|
| Hourly limit value for the protection of human health | 1 hour | 200 μg/m3 NO2, not to be exceeded more than 18 times a calendar year | 1 January 2010 |
| Annual limit value for the protection of human health | Calendar year | 40 μg/m3 NO2 | 1 January 2010 |
| Annual limit value for the protection of vegetation | Calendar year | 30 μg/m3 NOx |
| Averaging period | Limit value | |
|---|---|---|
| 24-hour limit value for the protection of human health | 24 hours | 50 μg/m3 PM10, not to be exceeded more than 35 times a calendar year |
| Annual limit value for the protection of human health | Calendar year | 40 μg/m3 PM10 |
| Averaging period | Limit value | |
|---|---|---|
| Hourly limit value for the protection of human health | 1 hour | 350 μg/m3, not to be exceeded more than 24 times a calendar year |
| Daily limit value for the protection of human health | 24 hours | 125 μg/m3, not to be exceeded more than 3 times a calendar year |
| Limit value for the protection of ecosystems | Calendar year and winter (1 October to 31 March) | 20 μg/m3 |