10.—(1) The Secretary of State shall draw up action plans indicating the measures to be taken in the short term where there is any risk of the limit values for any of the relevant pollutants, or the alert thresholds for sulphur dioxide or nitrogen dioxide, being exceeded, in order to reduce that risk and to limit the duration of such an occurrence.
(2) The alert threshold for sulphur dioxide is set out in paragraph 1.2 of Part I of Schedule 1 and the alert threshold for nitrogen dioxide is set out in paragraph 1.2 of Part II of Schedule 1.
(3) The information threshold and alert threshold for ozone are set out in paragraph 1.1 of Part VII of Schedule 1.
(4) The Secretary of State shall draw up action plans indicating the measures to be taken in the short term where there is any risk of the alert threshold for ozone being exceeded if there is in her opinion significant potential to—
(a)reduce such a risk; or
(b)reduce the duration or severity of such an occurrence.
(5) In making the assessment required by paragraph (4), the Secretary of State shall take account of national geographical, meteorological and economic conditions.
(6) The Secretary of State shall make available to the public—
(a)the results of investigations undertaken in the preparation of action plans under paragraph (4);
(b)the action plans; and
(c)information on the implementation of the action plans.