For more information, see clrra. The parties to a real estate transaction may also assign responsibility for contamination between the buyer and seller through indemnification, civil liability or similar agreements. While these buyers can help overcome uncertainties and are a common feature of many transactions, they do not relieve buyers of underlying responsibility. NOTE: This information is not intended and should not be construed as legal advice. Interested buyers should consult a lawyer before buying a potentially contaminated property. A ECA is generally described as a legally binding agreement between the EPO and a potential buyer or lessee of immovable property. The document may to some extent limit the buyer`s or tenant`s liability to the EPO for the renovation of the property. . . .