Air quality standards
6.—(1) Schedule 1 prescribes the following air quality standards—
(a)for Group A pollutants, the limit values set out in Part 1 of that Schedule;
(b)for Group B pollutants, the target values set out in Part 3 of that Schedule; and
(c)for ozone, the target values and long-term objectives set out in Part 4 of that Schedule.
(2) Limit values—
(a)shall be attained by the attainment date specified for the limit value concerned; or
(b)apply when these Regulations come into force, if no attainment date is specified.
(3) Target values shall be attained from the attainment date specified, in so far as this is possible.
(4) In the case of benzene and nitrogen dioxide, the margins of tolerance set out in Part 2 of Schedule 1 apply within the periods specified.