farmboy said:I also thought changing tanks would work but I was wrong, the law states All farm storage Meaning all tanks total, I thought I would put a 1000 gallon tank here and another there but that doesnt work either. I guess it means total farm storage, and the double wall tanks don't work either they may work for primary containment but you also have to have secondary containment (berm of some sort) everything I have said here is what I have found on the SDSU extension website.