A: Removal

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Lift up the vehicle.
Remove clips and bolts in front fender, then remove the front under cover.

Fig 1: Identifying Front Under Cover With Mounting Clips And Bolts
Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Identifying Front Under Cover With Mounting Clips And Bolts
Courtesy of SUBARU OF AMERICA, INC.