Review of regional plan

(1) The Director may, on his own motion, at any time after the regional plan has come into operation, undertake the work of review and evaluation of the regional plan and may make such modifications therein as may be justified by circumstances or as may be required by the State Government, and shall undertake the review and evaluation of the regional plan at any time after the regional plan has come into operation and shall make such modifications therein as may be justified by circumstances. (2) The preceding provisions of this Chapter shall, in so far as they can be applied, apply to the modifications under sub-section (1) as they apply to the preparation, publication and approval of the regional plan.