Section Env-C 204.25 - Retention of Decisions(a) Subject to (b), below, the department shall maintain on file such written decisions or orders as are issued pursuant to Env-C 204.24 as follows: (1) For decisions or orders that are not appealed, for no less than 5 years from the date of the decision or order; and(2) For decisions or orders that are appealed, for no less than 5 years from the date of the final decision on appeal.(b) If the director of the division of records management and archives of the department of state sets a retention period, pursuant to rules adopted under RSA 5:40, for written decisions or orders issued pursuant to RSA 541-A:35 of longer than 5 years, the department shall maintain such written decisions or orders on file for such longer period.N.H. Admin. Code § Env-C 204.25