xmlns:atom="http://www.w3.org/2005/Atom"
10. Where, for any quota year, a purchaser is unable to supply such proof of the quantities of dairy produce delivered to him that year as the Department may reasonably require, the Department shall make its own determination of those quantities, based on all the information available to it, for the purposes of calculating any levy payable by that purchaser, and shall inform the purchaser of such determination.