25 Pa. Code § 78a.104
Approval of inactive status for a well is valid for 5 years unless revoked. After 5 years, the owner or operator shall plug or return to active status a well granted inactive status unless the Department grants an application for a 1-year extension. The operator of a well granted inactive status may apply for renewal of inactive status by demonstrating that the well continues to satisfy the conditions imposed on the well by § § 78a.102 and 78a.103 (relating to criteria for approval of inactive status; and annual monitoring of inactive wells).
This section cited in 25 Pa. Code § 78a.91 (relating to general provisions); 25 Pa. Code § 78a.101 (relating to general provisions); and 25 Pa. Code § 78a.105 (relating to revocation of inactive status).