Provided Lessee has complied with all governmental regulations, Lessee may at any time, by notice to Lessor, terminate this Lease as to, and release from this Lease, all or any portion of the Leased Premises and be freed from all obligation and liability as to the released portion of the Leased Premises under this Lease except for (i) those obligations which have then occurred and become fixed, (ii) those obligations which have not been barred by the statute of limitations, and (iii) those covenants, liabilities and obligations which specifically survive termination as provided in this Lease. If Lessee releases only a part or parts of the Leased Premises, Lessee shall endeavor, but not be required, to release acreage in such a manner that will result in Lessee's retained portion of the Leased Premise being one (1) nearly rectangular shaped tract. The provisions of this Lease imposing obligations with respect to damages, restoration and indemnity shall survive any termination of this Lease. Upon a transfer or assignment of Lessee's interest under this Lease in violation of Subparagraph 14.2, then Lessor may, by notice to Lessee, terminate this Lease as to all or a portion of the Leased Premises. Within thirty (30) days after the giving or receipt of a notice of termination under this Paragraph 20, Lessee shall file for record with the County Clerk where the Leased Premises are situated, a proper and recordable release as to the Leased Premises, or portion thereof, terminated and released.