Longbrook IPA NHC07...IBUs?

Beer Recipes
1

Does anyone happen to know the IBUs for this winning IPA?

http://wiki.homebrewersassociation.org/LongbrookIPA

2

Obviously, it’s impossible to say without knowing the alpha acid concentrations, but assuming 12% for the Columbus and 8% for everything else, Tinseth’s formula comes up at 68 IBU.