Minimum level of petrol vapour recovery
Article 4
1. Member States shall ensure, with effect from the date on which Stage II petrol vapour recovery systems become mandatory pursuant to Article 3, that the petrol vapour capture efficiency of such systems is equal to or greater than 85 % as certified by the manufacturer in accordance with relevant European technical standards or type approval procedures referred to in Article 8 or, if there are no such standards or procedures, with any relevant national standard. 2. With effect from the date on which Stage II petrol vapour recovery systems become mandatory pursuant to Article 3, where the recovered petrol vapour is transferred to a storage tank at the service station, the vapour/petrol ratio shall be equal to or greater than 0,95 but less than or equal to 1,05.