Make sure the holes are drilled past the bottom of the tank (approx. 5' below grade, but check w/ your consultants on the recommended depth).All the while, use this problem as a negotiating point with the Owner.

@Patrick Reagan I grappled with this problem a while ago (there is thread on my particular situation somewhere on this forum).  

Let's go back to that.You are selling a solution to the seller's problem.  A

Sometimes it is the landowners and that can be a problem as there are rarely good associations in rural areas in my experience.

Shaun,I run into this problem a lot with clients when we need them to form a LLC for the subject property on hard money loans.  

Ran into this problem a year ago when closing a deal.

The last time we came across this problem a few months ago, I spent a lot of time on the phone with Columbia Gas representatives, and with PUCO (Public Utilities Commission), who first told me they could "help with my situation", then later that "there's nothing they can do".

Thankfully not directly my problem as the home owner is my tenant and therefor the one I evict.

If you are, no problem. As

Permitting shouldn't be a problem as there are a few homes having 2nd stories added now, and much more in the past.