Distance from Arrivals Area to Taxi Station

How far is it to walk to the Taxi Station from Arrivals Area, and is it easy to push a luggage trolley down the ramp?
My husband will have wheelchair assistance from the aircraft through to Baggage Claim, but we don't know if that will extend to the taxi Ramp. He can walk short distances but needs assistance with longer distances, stairs etc. I can manage the trolley.