4.—(1) The operator of a materials facility must measure the total weight in tonnes of mixed waste material received at that facility, from each supplier, during each reporting period.
(2) The operator of a materials facility must take samples of the mixed waste material received at that facility, from each supplier, during each reporting period, except where that material is to be transferred to another materials facility for the purpose of separating it into specified output material, and measure the composition of those samples.
(3) For the purposes of sub-paragraph (2), one sample must be taken for every 125 tonnes of mixed waste material received at the materials facility from each supplier.
(4) The total weight of all the samples taken for the purposes of sub-paragraph (3) must provide an average weight of 60kg or more per sample, and each sample taken must not weigh less than 55kg.
(5) For the purposes of sub-paragraph (2), measuring the composition of a sample taken means identifying the materials comprising that sample by reference to—
(a)the types of target material, non-target material and non-recyclable material that is contained in the sample, and
(b)the weight in kilograms of each type of target material, non-target material and non-recyclable material that is so identified.
(6) Target material that is identified in a sample taken for the purposes of sub-paragraph (2) must, as a minimum, be separately identified by reference to the following materials—
(a)glass;
(b)metal;
(c)paper;
(d)plastic.
(7) If the sample taken under sub-paragraph (2) contains material particles, they are deemed to comprise the proportions of target materials, non-target materials and non-recyclable materials already identified as making up the other contents of that sample, and the weight of the material particles must be apportioned according to those proportions for that particular sample.
(8) For the purposes of this paragraph, in relation to a batch of mixed waste material received at a materials facility—
(a)where that batch comprises material collected pursuant to arrangements made by a waste collection authority under section 45(1)(a) or (b) of the 1990 Act, that authority is the supplier;
(b)where that batch has been transferred from another materials facility, the material facility from which that material was transferred is the supplier;
(c)in a case not falling within paragraph (a) or (b), the person who collected the material or, if that person is not known, the person responsible for delivering it to the materials facility is the supplier;
(d)where the batch comprises material from more than one supplier, and the proportion of that batch attributable to a particular supplier cannot reasonably be ascertained, an estimate of the proportion is sufficient.