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1. The communications of the Member States to the Commission and the other Member States provided for in Article 4 shall have the following content:

(a) (i) gross calorific value (GCV) in MJ/m3 minimum/maximum;

(ii) Wobbe index in MJ/m3 minimum/maximum.

(b) Gas composition by volume in % of the total content:

— C1 to C5 content in % (sum) minimum/maximum;

— N2 + CO2 content in % minimum/maximum;

— CO content in % minimum/maximum;

— unsaturated HC content in % minimum/maximum;

— hydrogen content in % minimum/maximum.

(c) Information on toxic components contained in the gaseous fuel. That communication shall also include either of the following:

(a) supply pressure at the inlet of appliances in mbar: nominal/minimum/maximum;

(b) (i) supply pressure at the point of delivery in mbar: nominal/minimum/maximum;

(ii) admissible pressure loss in the end-user gas installation in mbar: nominal/minimum/maximum.

2. The reference conditions for Wobbe index and gross calorific value shall be the following:

(a) combustion reference temperature: 15 °C;

(b) volume measurement reference temperature: 15 °C;

(c) volume measurement reference pressure: 1 013,25 mbar.