(1) Subject to regulation 5, the amount to be levied by a joint waste disposal authority in respect of any financial year from each of its constituent councils shall be determined by apportioning the total amount to be levied by that authority in that year between those councils as follows—
(a) in such proportions as all the constituent councils may agree; or
(b) in the absence of such agreement, by a combination of the following proportions—
(i) the costs incurred by the joint waste disposal authority in the disposal or treatment of household waste delivered to it by its constituent councils shall be apportioned between the constituent councils in proportion to the tonnage of household waste delivered by each of these councils to the joint waste disposal authority within the last complete financial year for which data are available;
(ii) the costs incurred by the joint waste disposal authority in the disposal or treatment of business refuse that is deposited at places provided by the constituent councils under section 1 of the Refuse Disposal (Amenity) Act 1978 shall be apportioned between the constituent councils in proportion to the tonnage of business refuse deposited at such places within the area of each of these councils within the last complete financial year for which data are available; and
(iii) all other costs not falling within paragraphs (i) or (ii), shall be apportioned between the constituent councils by reference to the relevant proportion.
(2) For the purposes of paragraph 1(b)(iii), “the relevant proportion” is the relevant proportion determined in accordance with paragraphs (5) to (7) of regulation 6 of the 1992 Regulations but as if, in those paragraphs, the references to —
(a) “levying body” were references to a joint waste disposal authority; and
(b) “relevant authority” and “billing authority” were references to a constituent council.
(3) Where paragraph (1)(b) applies to the determination of a levy to be issued in respect of any financial year beginning on or after 1st April 2007, a constituent council shall, within the period beginning on 1st December and ending on 31st January in the financial year preceding the financial year in respect of which the levy is to be issued, inform the joint waste disposal authority of—
(a) the tonnage of household waste delivered to the joint waste disposal authority for disposal or treatment within the last complete financial year for which data are available;
(b) the tonnage of business refuse that was deposited at places provided by the constituent council under section 1 of the Refuse Disposal (Amenity) Act 1978 within the last complete financial year for which data are available; and
(c) the council tax base, determined in accordance with paragraphs (6) and (7) of regulation 6 of the 1992 Regulations, for its area, in respect of which a levy will be issued or it anticipates that a levy will be issued in the immediately following financial year.
(4) In this regulation—
“household waste”, has the same meaning as in section 75 of the Environmental Protection Act 1990 ;
“business refuse” means refuse falling to be disposed of in the course of a business, and “refuse” has the same meaning as in section 1(7) of the Refuse Disposal (Amenity) Act 1978.