Upon review of the matter by the Planning Board after such referral, the Planning Board may require such changes in the general site plan as are necessary to meet the requirements of this chapter and may make any other recommendations which it deems necessary to promote the general health, safety, morals, and welfare of the community. The Planning Board shall then adopt a resolution recommending a) a finding regarding environmental significance of the proposal, and b) either approval, approval with modifications, or disapproval of the proposed plan. Before any such resolution is adopted, the Planning Board shall hold a public hearing which shall be heard by the Planning Board within 45 days of the filing of the general site plan and all related materials with the Planning Board, and such hearing shall be advertised in a newspaper of general circulation in the Town of Ithaca at least five days before such hearing. The Planning Board shall make its recommendation within the 45 days after the hearing and forward the same to the Town Clerk.