PART A
(a)
Surface treating metals and plastic materials using an electrolytic or chemical activity where the aggregated volume of the treatment vats exceeds 30m3,
(b)
Surface treating materials using cadmium or any compound thereof where the activity may result in the release into the air or water of cadmium and its compounds, as listed in column 1 of the Table in paragraph 10 of Part 2 of this Schedule, in a quantity which, in any 12 month period, exceeds the background quantity for cadmium and its compounds by more than the amount specified in relation to it in column 2 of that Table.