SCHEDULE 1Limit values

Regulations 13, 15, 20(1), (2), (4) and (5), 21(5), 23(1) and 24(2)

Annotations:
Marginal Citations

M1The maximum daily eight hour mean concentration of carbon monoxide must be selected by examining eight hour running averages, calculated from hourly data and updated each hour. Each eight hour average so calculated must be assigned to the day on which it ends, that is, the first calculation period for any one day will be from 17:00 on the previous day to 01:00 on that day, and the last calculation period for any one day will be the period from 16:00 to 24:00 on that day.

Sulphur dioxide

Averaging period

Limit value

One hour

350 μg/m3, not to be exceeded more than 24 times a calendar year

One day

125 μg/m3, not to be exceeded more than 3 times a calendar year

Nitrogen dioxide

Averaging period

Limit value

One hour

200 μg/m3, not to be exceeded more than 18 times a calendar year

Calendar year

40 μg/m3

Benzene

Averaging period

Limit value

Calendar year

5 μg/m3

Carbon monoxide

Averaging period

Limit value

Maximum daily eight hour mean M1

10 mg/m3

Lead

Averaging period

Limit value

Calendar year

0.5 μg/m3

PM10

Averaging period

Limit value

One day

50 μg/m3, not to be exceeded more than 35 times a calendar year

Calendar year

40 μg/m3

PM2·5

Averaging period

Limit value

Margin of tolerance

Date by which limit value is to be met

Calendar year

25 μg/m3

20% on 11 June 2008, decreasing on the next 1 January and every 12 months thereafter by equal annual percentages to reach 0% by 1 January 2015

1 January 2015