Please note a withdrawal notice is also attached to this amendment NOTICE OF AMENDMENT AND WITHDRAWAL PUBLIC OFFERING OF CROWN PETROLEUM AND NATURAL GAS RIGHTS 1999 APRIL 07 12 NOON, CALGARY THE FOLLOWING PARCEL(S) SHOULD READ AS FOLLOWS: --- PLAINS REGION --- LICENCE HECTARES LAND DESCRIPTION ------- -------- ---------------- B0007 3840 TRACT ONE 5-03-033: 6NE PETROLEUM AND NATURAL GAS EXCEPTING NATURAL GAS IN THE VIKING FM (ZD 236) EXCEPTING NATURAL GAS IN THE TURNER VALLEY FM (ZD 113) TRACT TWO 5-03-032: 20NW;32NW PETROLEUM AND NATURAL GAS BELOW THE BASE OF THE CARDIUM FM (DRRZD 3) EXCEPTING NATURAL GAS IN THE TURNER VALLEY FM (ZD 113) TRACT THREE 5-03-032: 16N;20E;29;32S,NE;34N 5-03-033: 6NW PETROLEUM AND NATURAL GAS BELOW THE BASE OF THE VIKING FM (DRRZD 6) EXCEPTING NATURAL GAS IN THE TURNER VALLEY FM (ZD 113) TRACT FOUR 5-03-032: 12 PETROLEUM AND NATURAL GAS BELOW THE BASE OF THE MANNVILLE GRP (DRRZD 4) EXCEPTING NATURAL GAS IN THE TURNER VALLEY FM (DRRZD 28) TRACT FIVE 5-02-032: 6NE PETROLEUM AND NATURAL GAS IN THE VIKING FM (DRRZD 6) PETROLEUM AND NATURAL GAS BELOW THE BASE OF THE TURNER VALLEY FM (DRRZD 28) TRACT SIX 5-02-032: 6S,NW 5-03-032: 10;14;16S;20SW;22;28;30;34S 5-03-033: 6S 5-04-032: 24;36 PETROLEUM AND NATURAL GAS BELOW THE BASE OF THE TURNER VALLEY FM (DRRZD 28) B0008 IS WITHDRAWN ----------------------------------------------------------------------------------------------------------------------------------------------- ZONE DESIGNATIONS APPLICABLE TO THE 1999, APRIL 7 PUBLIC OFFERING NOTICE (Refer to Information Letter 98-14) ZD: 113 Zone: 6300 TURNER VALLEY FM KEY WELL: 00/07-29-032-03W5/0 INTERVAL: 8,178.00 - 8,281.00 Feet LOG TYPE: NOT IDENTIFIED ------------------------------------------------------------------------------------------------------------------------- ZD: 236 Zone: 2140 VIKING FM KEY WELL: 00/06-34-033-04W5/0 INTERVAL: 7,582.00 - 7,770.00 Feet LOG TYPE: INDUCTION ELECTRIC ------------------------------------------------------------------------------------------------------------------------ DEEPER RIGHTS REVERSION ZONE DESIGNATIONS APPLICABLE TO THE 1999, APRIL 7 PUBLIC OFFERING NOTICE (Refer to Information Letter 98-14) DRRZD: 3 Zone: 1700 CARDIUM FM KEY WELL: 00/16-16-041-06W5/0 INTERVAL: 6,303.00 - 6,436.00 Feet LOG TYPE: ELECTRICAL ------------------------------------------------------------------------------------------------------------------------ DRRZD: 4 Zone: 2480 MANNVILLE GRP KEY WELL: 00/06-16-041-08W4/0 INTERVAL: 2,557.00 - 2,985.00 Feet LOG TYPE: INDUCTION ELECTRICAL ------------------------------------------------------------------------------------------------------------------------ DRRZD: 6 Zone: 2140 VIKING FM KEY WELL: 00/10-10-042-14W4/0 INTERVAL: 2,600.00 - 2,680.00 Feet LOG TYPE: INDUCTION ELECTRICAL ------------------------------------------------------------------------------------------------------------------------ DRRZD: 28 Zone: 6300 TURNER VALLEY FM KEY WELL: 00/08-30-019-02W5/0 INTERVAL: 5,817.00 - 6,172.00 Feet LOG TYPE: GAMMA RAY NEUTRON AND ALL OTHER STRATA WHICH WERE DEPOSITED IN LATERAL CONTINUITY WITH THE STRATA DESCRIBED ABOVE AND WHICH OCCUR IN WHOLE OR IN PART WITHIN ANY OTHER FAULT BLOCK. ----------------------------------------------------------------------------------------------------------------------- END 1999 February 24 EUGENE SALDANHA, MANAGER EDMONTON, Alberta P & NG AGREEMENT SALES AND OFFSETS