S.L. 549.59 Art. 22Critical levels for protection of vegetation.

(1) The critical levels for the protection of vegetation shall be those prescribed by Schedule 9 and assessed in accordance with Section A of Schedule 3.

(2) Where fixed measurements are the sole source of information for assessing air quality, the number of sampling points shall not be less than the minimum number specified in Part III of Section A of Schedule 5.

(3) Where information for assessing air quality is supplemented by indicative measurements or modelling, the minimum number of sampling points may be reduced by up to 50% as long as the assessed concentrations of the relevant pollutant can be assessed in accordance with the data quality objectives prescribed by Part I of Section A of Schedule 1.