(a) Agencies and the public shall be afforded a reasonable time period, not less than 10 calendar days, in which to consider the final environmental impact statement. A decision on an action involving an applicant shall be made within 30 calendar days following the filing of a final Federal or SEQR environmental impact statement. The time period for decision may be extended for good cause.

(b) No final decision whether to commence, engage in, fund or approve an action that has been the subject of a final environmental impact statement shall be made until the specific written findings and statement required by 6 NYCRR section 617.11 are prepared and filed in accordance with 6 NYCRR section 617.12 and in the file referred to in section 586.8(b) of this Part.