Article 2.5.2.3.5.

All necessary measures shall be taken that do not involve any excessive costs to ensure that the concentrations of PM2.5 in the air do not exceed the target value stated in Appendix 2.5.3.14, Part D, from the date stated therein.

All necessary measures shall be taken to ensure that the concentrations of PM2.5 in the air do not exceed the limit value stated in Appendix 2.5.3.14, Part E, from the date stated therein throughout the zones and agglomerations. Compliance with that regulation shall be assessed in accordance with Appendix 2.5.3.3.

The margins of tolerance stated in Appendix 2.5.3.14, Part E, shall be applied in accordance with Article 2.5.2.4.1, 1.