25 Pa. Code § 264a.163
If an owner or operator fails to post additional bond within 60 days after receipt of a request by the Department for additional bond amounts under § 264a.162 (relating to bond amount adjustments), or fails to make timely deposits of bond in accordance with the schedule submitted under § 264a.157 (relating to phased deposits of collateral), the Department will issue a notice of violation to the owner or operator, and if the owner or operator fails to deposit the required bond amount within 15 days of the notice, the Department will issue a cessation order for all of the hazardous waste storage, treatment and disposal facilities operated by the owner or operator and take additional actions that may be appropriate, including suspending or revoking permits.
25 Pa. Code § 264a.163