Section 7(4)(g) in The Forest (Conservation) Rules, 2003
(g)The Central Government shall, after considering the advice of the Committee under clause (e) and clause (f) and after such further enquiry as it may consider necessary, grant in-principle approval subject to fulfillment of stipulated conditions, or reject the same within thirty days of the receipt of advice from the Committee and communicate the same to the concerned State Government or the Union territory Administration, as the case may be, within next five working days.