NOTICE OF CHANGE (AMENDMENTS/WITHDRAWALS) PUBLIC OFFERING OF CROWN PETROLEUM AND NATURAL GAS RIGHTS 2005 NOVEMBER 02 12 noon, CALGARY 2005 October 21 Retha Purkis - Manager EDMONTON, Alberta P & NG Agreement Sales ENERGY LEASE SCHEDULE PETROLEUM AND NATURAL GAS LEASES 2005, NOVEMBER 02 LEASE HECTARES LAND DESCRIPTION ----- -------- ---------------- THE FOLLOWING PARCEL(S) SHOULD READ AS FOLLOWS --- PLAINS REGION --- A0126 208 TRACT ONE 4-21-056: 21L7 PETROLEUM AND NATURAL GAS TO THE TOP OF THE LEDUC FM (DRRZD 65) TRACT TWO 4-21-056: 21W,L1,L2,L8,L15 PETROLEUM AND NATURAL GAS TO THE BASE OF THE VIKING FM (DRRZD 6) ------------------------------------------------------------------------------------- END APPENDIX 2 DEEPER RIGHTS REVERSION ZONE DESIGNATIONS APPLICABLE TO THE 2005, NOVEMBER 02 PUBLIC OFFERING NOTICE DRRZD: 6 ZONE: 2140 VIKING FM INTERVAL: 2,600.00 - 2,680.00 FEET KEY WELL: 00/10-10-042-14W4/0 LOG TYPE: INDUCTION ELECTRICAL ------------------------------------------------------------------------------------- DRRZD: 65 ZONE: 7200 LEDUC FM INTERVAL: 3,167.00 - 4,322.00 FEET KEY WELL: 00/07-17-056-21W4/0 LOG TYPE: FORMATION DENSITY ------------------------------------------------------------------------------------- END