You two are way underestimating the funds available.
PBA isn't owned by UNL and/or the athletic department. NU Athletics rents out the PBA and isn't on the hook for anything else, two completely different entities.
I realize PBA isn't owned by UNL and it is rented. What I'm saying is that it provides a benefit to the AD and was at least partially paid for with public funds. They wouldn't have access to this facility without the tax payers footing the bill upfront. It is a win/win for both, but you can't say that there are zero tax dollars affiliated with the AD, when it seems that there are some grey areas where they definitely benefit from public funding. As mentioned the CB3 NAPL may be another area where public funding may be a benefit to the AD. Another potential win/win for everyone involved.