(a) Except as provided in paragraphs (1) and (2) of this subdivision, the lead agency shall prepare or cause to be prepared a final EIS within 45 calendar days after the close of any hearing or within 60 calendar days after the filing of the draft EIS, whichever last occurs.

1. (1) If the proposed action has been withdrawn or if, on the basis of the draft EIS or a hearing, the authority has determined that the action will not have a significant effect on the environment, no final EIS shall be prepared.
2. (2) The authority may extend the last date for preparation of the final EIS (i) where it determines that additional time is necessary to complete the statement adequately or (ii) to meet the requirements of other statutes and regulations, or (iii) where problems with the proposed action requiring material reconsideration or modification have been identified, or (iv) for other causes.
3. (3) The final EIS shall reflect a revision and updating of the matters contained in the draft EIS in the light of further authority review, comments received and the record of any hearing.