The following close-out procedure shall apply to all deposits in escrow accounts established under the provisions of P.L. 1975, c. 291 (N.J.S.A. 40:55D-1 et seq.) and shall commence after the approving authority has granted final approval and signed the subdivision plat or site plan, in the case of application review escrow and deposits, or after the improvements have been approved as provided in Section 41 of P.L. 1975, c. 291 (N.J.S.A. 40:55D-53), in the case of improvement inspection escrows and deposits. The applicant shall send written notice by certified mail to the Chief Financial Officer of the municipality and the approving authority, and to the relevant municipal professional, that the application or the improvements, as the case may be, are completed. After receipt of such notice, the professional shall render a final bill to the Chief Financial Officer of the municipality within 30 days and shall send a copy simultaneously to the applicant. The Chief Financial Officer of the municipality shall render a written final accounting to the applicant on the uses to which the deposit was put within 45 days of receipt of the final bill. Any balances remaining in the deposit or escrow account, including interest in accordance with Section 1 of P.L. 1985, c. 315 (N.J.S.A. 40:55D-53.1), shall be refunded to the applicant along with the final accounting. To facilitate the release of escrow, applicants are requested to submit a signed escrow release voucher with the development application.