30. An improvement or development scheme may provide for all or any of the following matters, namely:- (a) the acquisition by the Authority of any land, in the area comprised in the scheme, which will, in their opinion, be required for the execution of the scheme or be affected by the execution of the scheme;(b) the laying out or re laying out of the land in the said area;(c) such demolition, alternation or reconstruction of buildings situated on land which it is proposed to acquire in the said area, as the Authority may think necessary;(d) the construction of any buildings which the Authority may consider it necessary to erect for any purpose other than sale;(e) the laying out or alternation of streets (including bridges, causeways and culverts);(f) the levelling, paving, metalling, flagging, channelling, sewering and draining of the said streets and the provisions therein of water, lighting and other sanitary conveniences ordinarily provided in a Municipality;(g) the raising, lowering or levelling of any land in the area comprised in the scheme;(h) the formation, retention or enlargement of open spaces;(i) the augmentation of the present water supply, or any other scheme for the improvement of the water supply;(j) the making of a drainage and sewerage scheme including outfall works; and(k) any other matters consistent with this Ordinance which the Authority may think fit.