Each Grantor will pay and discharge, before the same shall be delinquent, (i) all taxes, assessments and governmental charges or levies imposed upon the Collateral owned by such Grantor, and (ii) all lawful claims that, if unpaid, might by law become a Lien upon the Collateral owned by such Grantor, except to the extent failure to so pay or discharge, individually or in the aggregate, would not reasonably be expected to have a Material Adverse Effect; provided , however, that such Grantor shall not be required to pay or discharge any such tax, assessment, charge or claim that is being contested in good faith and by proper proceedings and as to which appropriate reserves are being maintained, unless and until any Lien resulting therefrom attaches to its property and becomes enforceable against its other creditors.