The constraint is not airport storage, but the pipeline itself. As jet consumption has increased over the years, the fuel companies have struggled to balance the flow of products such that one or other is not displaced from the line and has to be transported by truck or coastal tanker (at much higher unit cost). Jet will never be displaced, so diesel and gasoline would be the affected products.

Building a second line has been considered but has never made economic sense, and the government has certainly not offered to pay, naturally. This issue might trigger a rethink.