NOTICE OF CHANGE (AMENDMENTS/WITHDRAWALS) PUBLIC OFFERING OF CROWN PETROLEUM AND NATURAL GAS RIGHTS 2005 APRIL 06 12 noon, CALGARY 2005 April 04 Retha Purkis - Manager EDMONTON, Alberta P & NG Agreement Sales ENERGY LEASE SCHEDULE PETROLEUM AND NATURAL GAS LEASES 2005, APRIL 06 LEASE HECTARES LAND DESCRIPTION ----- -------- ---------------- THE FOLLOWING PARCEL(S) ARE WITHDRAWN A0137 ------------------------------------------------------------------------------------- END