NOTICE OF CHANGE (AMENDMENTS/WITHDRAWALS) PUBLIC OFFERING OF CROWN PETROLEUM AND NATURAL GAS RIGHTS 2008 APRIL 02 2008 February 08 Retha Purkis - Manager EDMONTON, Alberta P & NG Sales and Registrations ENERGY LEASE SCHEDULE PETROLEUM AND NATURAL GAS LEASES 2008, APRIL 02 LEASE HECTARES LAND DESCRIPTION ----- -------- ---------------- THE FOLLOWING PARCEL(S) SHOULD READ AS FOLLOWS --- PLAINS REGION --- A0045 256 4-19-018: 11 PETROLEUM AND NATURAL GAS BELOW THE BASE OF THE MEDICINE HAT SD (DRRZD 12) ------------------------------------------------------------------------------------- END APPENDIX 2 DEEPER RIGHTS REVERSION ZONE DESIGNATIONS APPLICABLE TO THE 2008, APRIL 02 PUBLIC OFFERING NOTICE DRRZD: 12 ZONE: 1640 MEDICINE HAT SD INTERVAL: 1,312.00 - 1,582.00 FEET KEY WELL: 00/06-30-014-04W4/0 LOG TYPE: INDUCTION GAMMA RAY ------------------------------------------------------------------------------------- END