18.—(1) If a processing plant is processing Category 1 or Category 2 material, and the processed material is to be sent to landfill (or, in the case of Category 2 material, a biogas or composting plant) the operator shall, once every week –
(a)take from the outlet of the cooker in which the material is processed a sample of at least 50 grams of processed material; and
(b)send the sample to a laboratory approved to test it for Clostridium perfingens.
(2) In the case of Category 3 processing plants where the material is intended for use in feedingstuffs the operator shall –
(a)take a representative sample of the material on each day that the material is consigned from the premises; and
(b)send it to a laboratory approved to test it for Salmonella and Enterobacteriaceae.
(3) In the case of Category 3 processing plants, where the processed material is not intended for use in feedingstuffs the operator shall –
(a)take a sample once every week of the material that is consigned from the premises; and
(b)send the sample to a laboratory approved to test it for Salmonella and Enterobacteriaceae.
(4) A person who contravenes any provision of this regulation shall be guilty of an offence.