Any Town officer, board, committee or commission demanding surety from any applicant hereunder shall be responsible for determining, in the exercise of his or its reasonable discretion and in good faith, the extent, quality and adequacy of any work done by such applicant or performance by such applicant of the obligation for which such surety was given. Such officer, board, committee or commission may, but need not, reduce the amount of surety held upon proof of satisfactory partial work or performance by such applicant, provided that nothing herein shall require that such reduction be commensurate with the extent of such performance.
If and when such Town officer, board, committee or commission determines that such applicant has fully and satisfactorily completed all work and performed all obligations for which such surety was given, such surety shall be released and returned to the applicant, including any accrued interest.