If you think about it, if it's not attached, then it's just a page in English saying it's a translation of a document they don't have. (In pdf terms, in the same document)
My understabding is that a translated doc should ALWAYS have a photocopy of the original attached (keep the original). In the old days these would be bound or sealed together with wax. But I would say approach it as if they expect 'electronic' versions to follow the form of the old style.