My comment was in the context of the biofuel side of things - im sure the producer of the waste is covered by a different bit of paper, which says a different set of things!
Its all madness though - i have an IBC. If its storage, it requires bunding, but if its part of the processor, it does not. If its physical treatment (in my case, settlement) then i can fill it to the brim, but, if i were to any chemistry in it, it would be limited to 250ltr fills.
The chap who came round was very pleasant about everything. It was part of my ongoing neighbour saga, and, it seemed to me that, when he realised i was just some chap in his garage, he almost wondered what he was doing here!