I have a 550 gallon STI-P3 storage tank which has never been used, but has been laying around the farm for a while. The exterior coating is scratched off in many places, and there is some dirt in the tank. But, for the price I'm asking - $375.00, the little bit of work required resolves compliance issues....cheaply. Heres the link for what it is. Once you get there, scroll down for specs. http://www.ipstanks.com/ppp.htm Call me at 859-525-2806 and leave a voice mail. I will call you back.