Oh man, think the city will let us build this?

Flow and berms are amazing. Wonder what kind of soil was used? I know i'd never have the guts to ride it but a smaller version would be interesting. Had at least 4 people this weekend ask me when the bsa is going in @ tranq. Wish i had an answer. A couple of them work construction and were offering the use of equipment to get it done...hmmmm...