10.—(1) Any recovery operation carried on within the curtilage of a sewage treatment works in relation to sludge or septic tank sludge brought from another sewage treatment works if the total quantity of such waste brought to the works in any period of twelve months does not exceed 10,000 cubic metres.
(2) The treatment within the curtilage of a water treatment works of waste arising at the works from water treatment if the total quantity of such waste which is treated at the works in any period of twelve months does not exceed 10,000 cubic metres.
(3) The storage of waste intended to be submitted to the activities mentioned in sub-paragraph (1) or (2) above if that storage is at the place where those activities are to be carried on.