(1) The costs of the scheme shall be met wholly or in part by a contribution to be levied by the appropriate authority on each plot included in the final scheme calculated in proportion to the increment which is estimated to accrue in respect of such plot by the Land Pooling Officer.
Provided that-
(i) (a) where the cost of the scheme, does not exceed half the increment, the cost shall be met wholly by a contribution, and (b) where it exceeds half the increment, to the extent of half the increment it shall be met by a contribution and the excess shall be borne by the appropriate authority;
(ii) where a plot is subject to a mortgage with possession or to a lease, the Land Pooling Officer shall determine in what proportion the mortgagee or lessee on the one hand and the mortgagor or lessor on the other hand shall pay such contribution;
(iii) no such contribution shall be levied on a plot used, allotted or earmarked for a public purpose or for the purpose of the appropriate authority which is solely beneficial to the owners of land or residents within the area of the scheme; and
(iv) the contribution levied on a plot used, allotted or earmarked for a public purpose or for the purpose of the appropriate authority which is beneficial partly to the owners of land or residents within the area of the scheme and partly to the general public shall be calculated in proportion to the benefit estimated to accrue to the general public from such use, allotment or earmark.
(2) The owner of each plot included in the final scheme shall be primarily liable for the payment of the contribution leviable in respect of such plot.