PART 3 Other pollutants and background monitoring

19 Monitoring of polycyclic aromatic hydrocarbons
1 The Department shall monitor concentrations of—
(a) basic polycyclic aromatic hydrocarbons; and
(b) any additional polycyclic aromatic hydrocarbons which it decides should be monitored,
at monitoring sites designated by it for this purpose.
2 The Department shall locate each monitoring site—
(a) together with a sampling point for benzo(a)pyrene, where this is possible; or
(b) in any other case, in accordance with those Parts of Schedule 6 relevant to Group B pollutants.
3 The total number of monitoring sites and their overall selection shall be such as the Department considers necessary to ensure that the monitoring provides sufficient information to identify long-term trends and geographical variation in the concentration of each polycyclic aromatic hydrocarbon.
4 Regulation 16(2) and (3) shall apply to the monitoring required by this regulation as if such monitoring were an assessment under Chapter 4 of Part 2.