Diesel Fuel Rebate Scheme: agriculture - earthworks - change in ownership of agricultural property

Are the earthworks for use in a 'core agricultural activity'?

Are the earthworks being carried out on the agricultural property where that core agricultural activity is carried on?

Are the earthworks carried out by a person who carries on the core agricultural activity or a person contracted by that person?

Are the earthworks undertaken for the purposes of a business undertaken to obtain produce for sale?