(a) The person, corporation, private volunteer fire department, or political subdivision which is aided pursuant to this subchapter may reimburse the political subdivision or private volunteer fire department furnishing such aid, such compensation for such services as may be agreed upon by a contract between such person, corporation, private volunteer fire department, or political subdivision and the private volunteer fire department or political subdivision furnishing such aid.

(b) Nothing contained in this subchapter shall prevent any assisting private volunteer fire department or political subdivision from assuming all or any part of such loss, damage, expense, or other cost as a result of assistance rendered, or from loaning such equipment, or from donating such services to the receiving private volunteer fire department or political subdivision without charge or cost.