Division 5 For paragraph 2 is substituted:

‘Each Party shall collect and maintain information on:

1. (a)

   Ambient concentrations and depositions of sulphur and nitrogen compounds;

2. (b)

   Ambient concentrations of ozone, volatile organic compounds and particulate matter; and

3. (c)

   If practicable, estimates of exposure to ground-level ozone and particulate matter.

Each Party shall, if practicable, also collect and maintain information on the effects of all of these pollutants on human health, terrestrial and aquatic ecosystems, materials and the climate. Parties within the geographic scope of EMEP should use guidelines adopted by the Executive Body. Parties outside the geographic scope of EMEP should use as guidance the methodologies developed through the workplan of the Executive Body.’