Office of Public Sector Information

Office of Public Sector Information

Advanced Search

Main menu and contents

Supplementary menus and contents

Related Pages
Feeds

PART 5

Page 4 of 15

Previous Next

First page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Last page

PART 5 Final and miscellaneous provisions

Collation of information etc.

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.

Revocations

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

SCHEDULE 1 Air quality standards

PART 1 Limit values for Group A pollutants

Benzene

Averaging period Limit value Attainment date
Limit value for the protection of human health Calendar year 5 μg/m3 1 January 2010

Carbon monoxide

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

Lead

Averaging period Limit value
Annual limit value for the protection of human health Calendar year 0.5 μg/m3

Nitrogen dioxide (NO2) and oxides of nitrogen (NOx)

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

PM10

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

Sulphur dioxide

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

Page 4 of 15

Previous Next

First page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Last page