No decision to carry out or approve an action which may have a significant effect on the environment shall be made by the City Council or any department, board, commission, officer or employee of the City until there has been full compliance with all requirements of this chapter and Part 617 of Title 6 of NYCRR, implementing Article 8 of the Environmental Conservation Law providing for environmental quality review; provided, however, that nothing herein shall be construed as prohibiting:
A.
The conducting of studies necessary to the formulation of a proposal for action which do not commit the City to approve, commence or engage in such action.
B.
The granting of any part of an application which relates only to technical specifications and requirements, provided that no such partial approval shall entitle or permit the applicant to commence the action until all requirements of this chapter and Part 617 of Title 6 of NYCRR have been fulfilled.