The Planning Board or a designated subcommittee thereof shall act within 45 days on a minor subdivision or complete application for a minor subdivision. The Board or subcommittee shall not approve or conditionally approve the minor subdivision prior to receipt of comments by the above agencies or officials until 30 days has elapsed from referral without any comments. If approved, a notation to that effect shall be made on the plat and it shall be signed by the Planning Board Chairman and the Planning Board Secretary and returned to the subdivider within one week following the next regular meeting of the Planning Board. If rejected, the reasons for rejection shall be noted on all copies of the application form, one of which shall be returned to the applicant. The Planning Board or designated subcommittee may attach conditions of approval to any minor subdivision.