concerned is to be prepared, including conditions as to the manner in which the structure plan is to be made known and as to inspection and representations by inhabitants of the area of jurisdiction of any local authority concerned and by other interested parties in the preparation of the structure plan. (5) A structure plan shall before the date on which it is submitted to the Administrator in terms of subsection (1), (2) or (3) be available for inspection and the lodging of objections or the making of representations to the inhabitants of the area of jurisdiction of any local authority concerned and to other interested parties at the office of such a local authority or joint committee concerned. (6) The Administrator shall, after considering objections lodged or representations made in terms of subsection (5), approve or reject a structure plan submitted to him in terms of subsection (1), (2) or (3) and notify a local authority or joint committee concerned accordingly. (7) A structure plan so approved may at any time, on application to or on the direction of the Administrator, be amended or withdrawn, with the approval of the Administrator, by a local authority or joint committee concerned or the director, in such manner as may be determined by the Administrator and subject to inhabitants of the area of jurisdiction of any local authority concerned and other interested parties being afforded an opportunity of lodging objections or making representations. (8) (a) A structure plan shall, unless the Administrator directs otherwise, be reviewed by a local authority or joint committee concerned or the director at least once every 10 years, in such manner as may be determined by the Administrator and subject to inhabitants of the area of jurisdiction of any local authority concerned and other interested parties being afforded an opportunity of lodging objections or making representations and shall, as so reviewed, be submitted to the Administrator for his approval. (b) A structure plan shall lapse at the expiry of a period of 10 years after the approval thereof in terms of subsection (6) or in terms of paragraph (a) of this subsection, if the provisions of paragraph (a) of this subsection are not complied with. (9) In the preparation, amendment, withdrawal or reviewing of a structure plan in terms of this section regard shall be had to the preservation of the natural and developed environment and steps taken in this connection shall be specified. (10) (a) (i) Where a council deems it advisable by virtue of the provisions of section 5, its town clerk or secretary, as the case may be, may, subject to the provisions of paragraph (c) of this subsection, prepare and submit to the council for its approval a structure plan, in respect of the land situated in the area of jurisdiction of its local authority or part thereof. (ii) The approval referred to in subparagraph (i) shall be subject to such conditions as the council may determine as to the manner in which such a structure plan is to be prepared, including conditions as to inspection and representations by inhabitants of the area of jurisdiction of the local authority concerned and by other interested parties in the preparation of the said structure plan. (iii) Where a council approves a structure plan in terms of subparagraph (i), it shall within 60 days submit it to the director for his information. (b) The provisions of subsections (5), (6), (7), (8) and (9) shall apply mutatis mutandis in relation to such a structure plan as if a reference in those subsections to the Administrator were a reference to the council concerned. (c) No such structure plan shall be inconsistent with a structure plan contemplated in subsection (1), (2) or (3) or contain an authorisation contemplated in section 5 (2). (11) No structure plan which is in the opinion of the Administrator in any way inconsistent with a guide plan approved under section 6A (10) of the Physical Planning Act, 1967 (Act 88 of 1967), or with a plan approved under section 6A (13) of that Act, shall be approved under this section or continue to exist in so far as it is inconsistent with such guide plan or plan approved in terms of the said section 6A (13).