Skeleton, you clearly don't understand the concept of the FARP. It's a Forward Arming and Refuelling Point. It has to be somewhere where the ac can land and be re-supplied without the need to transit back to to main base - it's all about fast turnround to get them back to where they're needed - fast. There is also the ALARP, which depends on another ac fitted with refuelling kit and tanks, be it a C130 or Chinook or whatever to act as a fuel source.
The fact that the FARP is next to a runway is irrelevant - it could easily be a road, dirt strip, etc.