Conoco Canada Resources Limited — M&A Activity 2000

Oct 20, 2000

==> picture [216 x 36] intentionally omitted <==

530-8th Avenue S.W., Calgary, AB T2P 3S8 Tel.: (403) 267-6800 Fax: (403) 267-6529

October 17, 2000

Alberta Securities Commission Securities Commission of Newfoundland Ontario Securities Commission Commission des valeurs mobilières du Québec Toronto Stock Exchange Consumer and Corporate Affairs

British Columbia Securities Commission Nova Scotia Securities Commission Registrar of Securities, Prince Edward Island Saskatchewan Securities Commission Montreal Stock Exchange

Dear Sirs:

Subject : Gulf Canada Resources Limited Offer to Purchase all of the Common Shares of Crestar Energy Inc.

We confirm that the following material was sent by pre-paid mail on October 13, 2000 to the registered shareholders of common shares of Crestar Energy Inc.:

1. Gulf Letter addressed to Crestar Energy Inc. Shareholders dated October 12, 2000

2. Gulf Offer to Purchase all Common Shares of Crestar Energy Inc.

3. Crestar Director’s Circular

4. Letter of Transmittal

5. Notice of Guaranteed Delivery

6. Security Return Envelope

We further confirm that copies of the above mentioned material, were sent by courier on October 15 and 16, 2000, to each intermediary holding shares of Crestar Energy Inc. who responded to the initial search conducted pursuant to the Offer to Purchase dated October 12, 2000.

In compliance with the rules in the CBCA and it’s regulations, we are providing this material to you in our capacity as Depositary under the subject offer.

Yours truly,

COMPUTERSHARE

(On Behalf of Montreal Trust Company of Canada)

“Signed by” D. Paul Administrator Stock Transfer Services

CresGulf.lwp

==> picture [216 x 36] intentionally omitted <==

530-8th Avenue S.W., Calgary, AB T2P 3S8 Tel.: (403) 267-6800 Fax: (403) 267-6529

October 17, 2000

Alberta Securities Commission Securities Commission of Newfoundland Ontario Securities Commission Commission des valeurs mobilières du Québec Toronto Stock Exchange Consumer and Corporate Affairs

British Columbia Securities Commission Nova Scotia Securities Commission Registrar of Securities, Prince Edward Island Saskatchewan Securities Commission Montreal Stock Exchange

Dear Sirs:

Subject : Gulf Canada Resources Limited Offer to Purchase all of the Common Shares of Crestar Energy Inc.

We confirm that the following material was sent by pre-paid mail on October 13, 2000 to the registered shareholders of common shares of Crestar Energy Inc.:

1. Gulf Letter addressed to Crestar Energy Inc. Shareholders dated October 12, 2000

2. Gulf Offer to Purchase all Common Shares of Crestar Energy Inc.

3. Crestar Director’s Circular

4. Letter of Transmittal

5. Notice of Guaranteed Delivery

6. Security Return Envelope

We further confirm that copies of the above mentioned material, were sent by courier on October 15 and 16, 2000, to each intermediary holding shares of Crestar Energy Inc. who responded to the initial search conducted pursuant to the Offer to Purchase dated October 12, 2000.

In compliance with the rules in the CBCA and it’s regulations, we are providing this material to you in our capacity as Depositary under the subject offer.

Yours truly,

COMPUTERSHARE

(On Behalf of Montreal Trust Company of Canada)

“Signed by” D. Paul Administrator Stock Transfer Services

CresGulf.lwp

==> picture [216 x 36] intentionally omitted <==

530-8th Avenue S.W., Calgary, AB T2P 3S8 Tel.: (403) 267-6800 Fax: (403) 267-6529

October 17, 2000

Alberta Securities Commission Securities Commission of Newfoundland Ontario Securities Commission Commission des valeurs mobilières du Québec Toronto Stock Exchange Consumer and Corporate Affairs

British Columbia Securities Commission Nova Scotia Securities Commission Registrar of Securities, Prince Edward Island Saskatchewan Securities Commission Montreal Stock Exchange

Dear Sirs:

Subject : Gulf Canada Resources Limited Offer to Purchase all of the Common Shares of Crestar Energy Inc.

We confirm that the following material was sent by pre-paid mail on October 13, 2000 to the registered shareholders of common shares of Crestar Energy Inc.:

1. Gulf Letter addressed to Crestar Energy Inc. Shareholders dated October 12, 2000

2. Gulf Offer to Purchase all Common Shares of Crestar Energy Inc.

3. Crestar Director’s Circular

4. Letter of Transmittal

5. Notice of Guaranteed Delivery

6. Security Return Envelope

We further confirm that copies of the above mentioned material, were sent by courier on October 15 and 16, 2000, to each intermediary holding shares of Crestar Energy Inc. who responded to the initial search conducted pursuant to the Offer to Purchase dated October 12, 2000.

In compliance with the rules in the CBCA and it’s regulations, we are providing this material to you in our capacity as Depositary under the subject offer.

Yours truly,

COMPUTERSHARE

(On Behalf of Montreal Trust Company of Canada)

“Signed by” D. Paul Administrator Stock Transfer Services

CresGulf.lwp