25 Pa. Code § 977.40 – Subrogation for corrective action cost.

(a) The Fund, after any payment, shall be subrogated to all of the rights of recovery of an owner or operator against any person for the costs of remediation.
(b) If an owner or operator does not comply with § 977.32 (relating to participant cooperation), the Fund may deny further payments on a claim.

This section cited in 25 Pa. Code § 977.32 (relating to participant cooperation).