I can say with some confidence that I'm fairly certain BDCO currently trucks everything in/out of the plant.
However we do know there is some type of pipeline infrastructure that goes through the Nixon property, a leftover from previous decades, but its unknown what the status is as to the availability of that pipeline or if its even usable at this point. Information is tough to get from BDCO management.
Below is a link to an earlier post from 4 years ago by my good friend Enterprising Investor that tells a little about this subject.