N.Y. Comp. Codes R. & Regs. tit. 17, § 15.7
(a) Should the proposed action of the applicant not be type II or excluded, the department will either:
(3) commence procedures leading to the preparation of a DEIS or Federal DEIS pursuant to subdivision (c) of this section.
In any case, if the action is in a coastal area, the provisions of 19 NYCRR Part 600 may also apply and will, if applicable, be complied with by the department.
(c) If, based upon its consideration of the environmental assessment, and the criteria contained in section 15.11 of this Part, the department determines that the proposed action of the applicant may have a significant effect on the environment, the following shall apply:
(1) If the proposed action of the applicant is subject to the requirements of NEPA, the department shall follow those procedures necessary for its compliance with NEPA for major Federal actions significantly affecting the quality of the human environment. Upon completion of the Federal FEIS by the department or Federal agency as is appropriate under NEPA implementing regulations, the department shall have no further obligation with respect to this Part, provided that the department has:
(e) When the applicant prepares the DEIS, the department shall review it and determine whether to accept it as satisfactory with respect to its scope, content and adequacy. Should the DEIS be acceptable, the department shall so notify the applicant. Should the DEIS submitted by the applicant not be acceptable, the department shall so notify the applicant and specify the deficiencies which render the DEIS inadequate. An applicant shall be given adequate time to cure any such deficiencies.
(f)
(j) After the conclusion of the commenting period on the FEIS for the proposed action of the applicant, the department may fund such action or grant such permit, as the case may be, provided that the department has: