Metro track : this part is include in the new depôt, 5 track here (begin on 2-2-1 configuration just after Erasme station where actualy is mapped a 2 to 3 track) 

Chemin : 949130672 is a ventilation part of underground installation (all tracks are east to this builiding). 

Will update this note after processing of mapillary picture of plans (no perfect quality but usable to adjust track number and position). 