(a) An award, compromise or settlement of a claim hereunder in excess of $25,000 shall be effected only with the prior written approval of the Attorney General or his designee. For the purposes of this paragraph, a principal claim and any derivative or subrogated claim shall be treated as a single claim.

(b) An administrative claim may be adjusted, determined, compromised or settled hereunder only after consultation with the Department of Justice when, in the opinion of the Environmental Protection Agency:

(1) A new precedent or a new point of law is involved; or

(2) A question of policy is or may be involved; or

(3) The United States is or may be entitled to indemnity or contribution from a third party and the Agency is unable to adjust the third party claim; or

(4) The compromise of a particular claim, as a practical matter, will or may control the disposition of a related claim in which the amount to be paid may exceed $25,000.

(c) An administrative claim may be adjusted, determined, compromised, or settled by EPA hereunder only after consultation with the Department of Justice when EPA is informed or is otherwise aware that the United States or an employee, agent, or cost-plus contractor of the United States is involved in litigation based on a claim arising out of the same incident or transaction.