NOTICE OF CHANGE (AMENDMENTS/WITHDRAWALS) PUBLIC OFFERING OF CROWN PETROLEUM AND NATURAL GAS RIGHTS 2005 OCTOBER 05 12 noon, CALGARY 2005 August 23 Retha Purkis - Manager EDMONTON, Alberta P & NG Agreement Sales ENERGY LEASE SCHEDULE PETROLEUM AND NATURAL GAS LEASES 2005, OCTOBER 05 LEASE HECTARES LAND DESCRIPTION ----- -------- ---------------- THE FOLLOWING PARCEL(S) SHOULD READ AS FOLLOWS --- PLAINS REGION --- A0095 256 (NAT001501) 5-05-032: 28 PETROLEUM AND NATURAL GAS ------------------------------------------------------------------------------------- END APPENDIX 3 ADDENDA AND CONTACTS APPLICABLE TO THE 2005, OCTOBER 05 PUBLIC OFFERING NOTICE NAT001501 LAND DESCRIPTION LEASE A0095 5-05-032: 28L2P,L8P IS/ARE WITHIN A NATURAL AREA, ESTABLISHED UNDER THE PUBLIC LANDS ACT. SURFACE ACCESS IS SUBJECT TO SPECIFIC RESTRICTIONS FOR FURTHER INFORMATION, PLEASE CONTACT: BILL RICHARDS RESOURCE TECHNOLOGIST COMMUNITY DEVELOPMENT PARKS AND PROTECTED AREAS POLICY AND LAND USE PLANNING SECTION 9820 106 ST NW FLOOR 5 EDMONTON AB T5K 2J6 (780) 427-9445 ------------------------------------------------------------------------------------- END