-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, RgkHIQ6ittJnqU+BPlu4jGFESbnakxCRQLDGqZj1JkqMafionC0WREYA7PwKoYY5 6CRVQwz12tXeGk9xT7sp4g== 0000891836-07-000297.txt : 20070928 0000891836-07-000297.hdr.sgml : 20070928 20070927173609 ACCESSION NUMBER: 0000891836-07-000297 CONFORMED SUBMISSION TYPE: SC 13D/A PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20070928 DATE AS OF CHANGE: 20070927 GROUP MEMBERS: JOHN SCULLY GROUP MEMBERS: PHOEBE SNOW FOUNDATION, INC. GROUP MEMBERS: SAN FRANCISCO PARTNERS II, L.P. GROUP MEMBERS: SF ADVISORY PARTNERS, L.P. GROUP MEMBERS: SPO ADVISORY CORP. GROUP MEMBERS: SPO ADVISORY PARTNERS, L.P. GROUP MEMBERS: THE ELIZABETH R. & WILLIAM J. PATTERSON FOUNDATION GROUP MEMBERS: WILLIAM E. OBERNDORF GROUP MEMBERS: WILLIAM J. PATTERSON SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: MARTIN MARIETTA MATERIALS INC CENTRAL INDEX KEY: 0000916076 STANDARD INDUSTRIAL CLASSIFICATION: MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400] IRS NUMBER: 561848578 STATE OF INCORPORATION: NC FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-47249 FILM NUMBER: 071140172 BUSINESS ADDRESS: STREET 1: 2710 WYCLIFF RD CITY: RALEIGH STATE: NC ZIP: 27607 BUSINESS PHONE: 9197814550 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: SPO PARTNERS II LP CENTRAL INDEX KEY: 0001046206 IRS NUMBER: 752377615 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A BUSINESS ADDRESS: STREET 1: 591 REDWOOD HIGHWAY STE 3215 CITY: MILL VALLEY STATE: CA ZIP: 94941 BUSINESS PHONE: 4153836600 MAIL ADDRESS: STREET 1: 591 REDWOOD HIGHWAY, 3215 CITY: MILL VALLEY STATE: CA ZIP: 94941 FORMER COMPANY: FORMER CONFORMED NAME: MAIN STREET PARTNERS LP DATE OF NAME CHANGE: 19970916 SC 13D/A 1 sc0127.txt AMENDMENT NO. 1 TO SCHEDULE 13D SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* MARTIN MARIETTA MATERIALS, INC. (Name of Issuer) COMMON STOCK, PAR VALUE $0.01 PER SHARE (Title of Class of Securities) 573284106 (CUSIP Number) SPO Advisory Corp. 591 Redwood Highway, Suite 3215 Mill Valley, California 94941 (415) 383-6600 with a copy to: Alison S. Ressler Sullivan & Cromwell LLP 1888 Century Park East Los Angeles, California 90067-1725 (310) 712-6600 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) SEPTEMBER 25, 2007 (Date of Event which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this Schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box [_]. Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Page 1 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON SPO Partners II, L.P. - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS WC - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 3,112,300 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 3,112,300 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,112,300 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.4% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN - -------------------------------------------------------------------------------- (1) Power is exercised through its sole general partner, SPO Advisory Partners, L.P. CUSIP No. 573284106 Page 2 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON SPO Advisory Partners, L.P. - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS Not Applicable - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 3,112,300 (1)(2) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 3,112,300 (1)(2) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,112,300 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.4% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN - -------------------------------------------------------------------------------- (1) Solely in its capacity as the sole general partner of SPO Partners II, L.P. (2) Power is exercised through its sole general partner, SPO Advisory Corp. CUSIP No. 573284106 Page 3 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON San Francisco Partners II, L.P. - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS WC - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION California - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 147,800 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 147,800 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 147,800 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.4% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN - -------------------------------------------------------------------------------- (1) Power is exercised through its sole general partner, SF Advisory Partners, L.P. CUSIP No. 573284106 Page 4 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON SF Advisory Partners, L.P. - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS Not Applicable - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 147,800 (1)(2) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 147,800 (1)(2) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 147,800 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.4% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN - -------------------------------------------------------------------------------- (1) Solely in its capacity as the sole general partner of San Francisco Partners II, L.P. (2) Power is exercised through its sole general partner, SPO Advisory Corp. CUSIP No. 573284106 Page 5 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON SPO Advisory Corp. - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS Not Applicable - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 3,260,100 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 3,260,100 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,260,100 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.8% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON CO - -------------------------------------------------------------------------------- (1) Solely in its capacity as the sole general partner of SPO Advisory Partners, L.P. with respect to 3,112,300 of such shares; and solely in its capacity as the sole general partner of SF Advisory Partners, L.P. with respect to 147,800 of such shares. (2) Power is exercised through its three controlling persons, John H. Scully, William E. Oberndorf and William J. Patterson. CUSIP No. 573284106 Page 6 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON John Scully - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS PF and Not Applicable - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION USA - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 35,800 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED 3,260,100 (2) BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 35,800 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER 3,260,100 (2) - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,295,900 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.9% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON IN - -------------------------------------------------------------------------------- (1) Of these shares, 600 shares are held in the John H. Scully Individual Retirement Accounts, which are self-directed, and 35,200 shares may be deemed to be beneficially owned by Mr. Scully solely in his capacity as controlling person, sole director and executive officer of Phoebe Snow Foundation, Inc. (2) These shares may be deemed to be beneficially owned by Mr. Scully solely in his capacity as one of three controlling persons of SPO Advisory Corp. CUSIP No. 573284106 Page 7 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON William E. Oberndorf - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS Not Applicable - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION USA - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER -0- ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED 3,260,100 (1) BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER -0- ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER 3,260,100 (1) - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,260,100 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.8% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON IN - -------------------------------------------------------------------------------- (1) These shares may be deemed to be beneficially owned by Mr. Oberndorf solely in his capacity as one of three controlling persons of SPO Advisory Corp. CUSIP No. 573284106 Page 8 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON William J. Patterson - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS Not Applicable - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION USA - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 100 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED 3,261,800 (2) BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 100 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER 3,261,800 (2) - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,261,900 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.8% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON IN - -------------------------------------------------------------------------------- (1) These shares are held in the William J. Patterson Individual Retirement Account, which is self directed. (2) Of these shares, 3,260,100 shares may be deemed to be beneficially owned by Mr. Patterson solely in his capacity as one of three controlling persons of SPO Advisory Corp. and 1,700 shares may be deemed to be beneficially owned by Mr. Patterson solely in his capacity as a controlling person, director and executive officer of The Elizabeth R. & William J. Patterson Foundation. CUSIP No. 573284106 Page 9 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON Phoebe Snow Foundation, Inc. - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS WC - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION California - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 35,200 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 35,200 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 35,200 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) **0.1% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON CO - -------------------------------------------------------------------------------- ** Denotes less than. (1) Power is exercised through its controlling person, sole director and executive officer, John H. Scully. CUSIP No. 573284106 Page 10 of 53 pages - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON The Elizabeth R. & William J. Patterson Foundation - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_] (b) [X] - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. SOURCE OF FUNDS WC - -------------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) OR 2(f) [_] - -------------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION California - -------------------------------------------------------------------------------- 7. SOLE VOTING POWER 1,700 (1) ------------------------------------------------------ NUMBER OF SHARES 8. SHARED VOTING POWER BENEFICIALLY OWNED -0- BY EACH REPORTING ------------------------------------------------------ PERSON WITH 9. SOLE DISPOSITIVE POWER 1,700 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,700 - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) **0.1% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON CO - -------------------------------------------------------------------------------- ** Denotes less than. (1) Power is exercised through its controlling persons, directors and executive officers, William J. Patterson and Elizabeth R. Patterson. Page 11 of 53 pages This Amendment No. 1 amends the Schedule 13D (the "Original 13D") filed with the Securities and Exchange Commission ("SEC") on August 10, 2007. Unless otherwise stated herein, the Original 13D, as previously amended, remains in full force and effect. Terms used therein and not defined herein shall have the meanings ascribed thereto in the Original 13D. ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION. The source and amount of the funds used or to be used by the Reporting Persons to purchase Shares are as follows: NAME SOURCE OF FUNDS AMOUNT OF FUNDS - ---------------------- ---------------------------------- ------------------ SPO Contributions from Partners $390,648,094 SPO Advisory Partners Not Applicable Not Applicable SFP Contributions from Partners $18,454,695 SF Advisory Partners Not Applicable Not Applicable SPO Advisory Corp. Not Applicable Not Applicable JHS Not Applicable and Personal Funds $79,309 WEO Not Applicable Not Applicable WJP Not Applicable and Personal Funds $12,572 PS Foundation Contributions from Shareholders $4,582,420 Patterson Foundation Contributions from Shareholders $221,740 (1) As used herein, the term "Personal Funds" includes sums borrowed from banks and brokerage firm margin accounts, none of which were borrowed or otherwise obtained for the specific purpose of acquiring, holding, trading or voting Shares. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER. (a) Percentage interest calculations for each Reporting Person are based upon the Issuer having 41,796,336 total outstanding shares of common stock as reported on the Issuer's 10-Q filed with the Securities and Exchange Commission on August 7, 2007. SPO The aggregate number of Shares that SPO owns beneficially, pursuant to Rule 13d-3 of the Act, is 3,112,300 Shares, which constitutes approximately 7.4% of the outstanding Shares. SPO Advisory Partners Because of its position as the sole general partner of SPO, SPO Advisory Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 3,112,300 Shares, which constitutes approximately 7.4% of the outstanding Shares. SFP The aggregate number of Shares that SFP owns beneficially, pursuant to Rule 13d-3 of the Act, is 147,800 Shares, which constitutes approximately 0.4% of the outstanding Shares. Page 12 of 53 pages SF Advisory Partners Because of its position as the sole general partner of SFP, SF Advisory Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 147,800 Shares, which constitutes approximately 0.4% of the outstanding Shares. SPO Advisory Corp. Because of its positions as the sole general partner of each of SPO Advisory Partners and SF Advisory Partners, SPO Advisory Corp. may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 3,260,100 Shares in the aggregate, which constitutes approximately 7.8% of the outstanding Shares. JHS Individually, and because of his positions as a control person of SPO Advisory Corp. and the and controlling person, sole director and executive officer of PS Foundation, JHS may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 3,295,900 Shares, which constitutes approximately 7.9% of the outstanding Shares. WEO Because of his positions as a control person of SPO Advisory Corp., WEO may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 3,260,100 Shares in the aggregate, which constitutes approximately 7.8% of the outstanding Shares. WJP Because of his position as a control person of SPO Advisory Corp. and a controlling person, director and executive officer of Patterson Foundation, WJP may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 3,261,900 Shares in the aggregate, which constitutes approximately 7.8% of the outstanding Shares. PS Foundation The aggregate number of Shares that PS Foundation owns beneficially, pursuant to Rule 13d-3 of the Act, is 35,200 Shares, which constitutes less than 0.1% of the outstanding Shares. Patterson Foundation The aggregate number of Shares that Patterson Foundation owns beneficially, pursuant to Rule 13d-3 of the Act, is 1,700 Shares, which constitutes less than 0.1% of the outstanding Shares. To the best of the knowledge of each of the Reporting Persons, other than as set forth above, none of the persons named in Item 2 hereof is the beneficial owner of any Shares. (b) SPO Acting through its sole general partner, SPO has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 3,112,300 Shares. Page 13 of 53 pages SPO Advisory Partners Acting through its sole general partner and in its capacity as the sole general partner of SPO, SPO Advisory Partners has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 3,112,300 Shares. SFP Acting through its sole general partner, SFP has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 147,800 Shares. SF Advisory Partners Acting through its sole general partner and in its capacity as the sole general partner of SFP, SF Advisory Partners has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 147,800 Shares. SPO Advisory Corp. Acting through its controlling persons and in its capacities as the sole general partner of each of SPO Advisory Partners and SF Advisory Partners, SPO Advisory Corp. has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 3,260,100 Shares in the aggregate. JHS As one of three controlling persons of SPO Advisory Corp., which is the sole general partner of each of SPO Advisory Partners and SF Advisory Partners, JHS may be deemed to have shared power with WEO and WJP to vote or to direct the vote and to dispose or to direct the disposition of 3,260,100 Shares held by SPO and SFP in the aggregate. In addition, JHS has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 600 Shares held in the John H. Scully Individual Retirement Accounts, which are self-directed individual retirement accounts, and 35,200 Shares held by the PS Foundation, for which JHS is the controlling person, sole director and executive officer. WEO As one of three controlling persons of SPO Advisory Corp., which is the sole general partner of each of SPO Advisory Partners and SF Advisory Partners, WEO may be deemed to have shared power with JHS and WJP to vote or to direct the vote and to dispose or to direct the disposition of 3,260,100 Shares held by SPO and SFP in the aggregate. WJP As one of the controlling persons of SPO Advisory Corp., which is the sole general partner of each of SPO Advisory Partners and SF Advisory Partners, WJP may be deemed to have shared power with JHS and WEO to vote or to direct the vote and to dispose or to direct the disposition of 3,260,100 Shares held by SPO and SFP in the aggregate. WJP may be deemed to have shared power to vote or to direct the vote and to dispose or to direct the disposition of 1,700 Shares held by the Patterson Foundation. In addition, WJP has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 100 Shares held in the William J. Patterson Individual Retirement Account, which is a self- directed individual retirement account. Page 14 of 53 pages PS Foundation Acting through its controlling person, PS Foundation has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 35,200 Shares. Patterson Foundation Acting through its two controlling persons, directors and executive officers, Patterson Foundation has the sole power to vote or to direct the vote and to dispose or to direct the disposition of 1,700 Shares. (c) Since August 10, 2007, Reporting Persons purchased Shares in open market transactions on the New York Stock Exchange as set forth on Schedule I attached hereto. Except as set forth in this paragraph (c), to the best of the knowledge of each of the Reporting Persons, none of the persons named in response to paragraph (a) has effected any transactions in Shares during the past 60 days. (d) Each of the Reporting Persons affirms that no person other than such Reporting Person has the right to receive or the power to direct the receipt of distributions with respect to, or the proceeds from the sale of, Shares owned by such Reporting Person. (e) Not applicable. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS. Exhibit A: Agreement pursuant to Rule 13d-1 (k) Page 15 of 53 pages SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated September 27,2007 By: /s/ Kim M. Silva -------------------------------- Kim M. Silva Attorney-in-Fact for: SPO PARTNERS II, L.P.(1) SPO ADVISORY PARTNERS, L.P.(1) SAN FRANCISCO PARTNERS II, L.P.(1) SF ADVISORY PARTNERS, L.P.(1) SPO ADVISORY CORP.(1) JOHN H. SCULLY(1) WILLIAM E. OBERNDORF(1) WILLIAM J. PATTERSON(1) PHOEBE SNOW FOUNDATION, INC.(1) THE ELIZABETH R. & WILLIAM J. PATTERSON FOUNDATION(1) (1) A Power of Attorney authorizing Kim M. Silva to act on behalf of this person or entity is filed as Exhibit B.
Page 16 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/15/2007 Buy 277 124.8600 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 830 124.8800 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 461 124.9000 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 184 124.9100 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 92 124.9200 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 461 124.9400 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 277 124.9500 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 554 124.9700 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 185 124.9800 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 369 124.9900 Open Market/Broker SPO Partners II, L.P. 8/15/2007 Buy 9,410 125.0000 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 15 124.8600 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 44 124.8800 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 25 124.9000 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 10 124.9100 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 5 124.9200 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 25 124.9400 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 15 124.9500 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 29 124.9700 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 9 124.9800 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 20 124.9900 Open Market/Broker San Francisco Partners II, L.P. 8/15/2007 Buy 503 125.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 8 124.8600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 26 124.8800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 14 124.9000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 6 124.9100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 3 124.9200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 14 124.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 8 124.9500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 17 124.9700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 6 124.9800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 11 124.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/15/2007 Buy 287 125.0000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 204 116.7600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 116.7800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 2,037 116.8709 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 116.9600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 8,686 117.0000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 3,334 117.2839 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 117.6750 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 117.6900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 2,500 117.7000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 833 117.7189 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 117.7400 Open Market/Broker
Page 17 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/16/2007 Buy 2,130 117.7500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 3,704 117.7600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,482 117.7900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 117.8000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 266 117.8700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,482 117.8731 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 117.8800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 117.9200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 117.9300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 556 117.9350 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 290 117.9429 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 648 117.9957 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 118.0000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.0700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.0900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,388 118.1727 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 462 118.1800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.2000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 118.2900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.3200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.3500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 118.3800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.3900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.4100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 118.6000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 118.6500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 118.6600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.6800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.6900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 926 118.7000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.8200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 118.8500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 648 118.8600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 22 118.8700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 556 118.8800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 118.9000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 348 118.9100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 118.9200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 648 118.9300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 118.9400 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 118.9500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 118.9600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 118.9900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 741 119.0000 Open Market/Broker
Page 18 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/16/2007 Buy 185 119.0100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.0200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.0600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.0900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.1100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 741 119.2000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 462 119.2600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.2800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.3000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 556 119.3100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 119.3200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.3300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 464 119.3600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.3700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,021 119.3800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,019 119.3900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 462 119.4000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.4100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 648 119.4200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.4300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 463 119.4400 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 463 119.4700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 119.4800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 648 119.4900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 119.5300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 926 119.5500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 741 119.5600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,574 119.5824 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.5900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 119.6000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 463 119.6100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.6200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 648 119.6500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.6600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.6700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 926 119.6800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 119.6900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 926 119.7000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.7100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 556 119.7300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 833 119.7400 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.7500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 119.7600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 119.7700 Open Market/Broker
Page 19 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/16/2007 Buy 1,945 119.7800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.7900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 119.8000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 417 119.8100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,482 119.8200 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 2,264 119.8300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 370 119.8400 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 119.8500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 93 119.8600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,204 119.8700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 463 119.8800 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 119.9000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 741 119.9100 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 833 119.9300 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 119.9400 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,111 119.9500 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 741 119.9600 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 119.9900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 7,315 120.0000 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,667 120.7083 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,296 121.4700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 121.6950 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,296 121.8593 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,389 121.8960 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,759 121.9211 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,852 121.9225 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 185 122.5900 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 278 122.9700 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 1,111 123.6142 Open Market/Broker SPO Partners II, L.P. 8/16/2007 Buy 2,037 123.7995 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 11 116.7600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 116.7800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 108 116.8709 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 116.9600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 460 117.0000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 176 117.2839 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 117.6750 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 117.6900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 132 117.7000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 44 117.7189 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 117.7400 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 113 117.7500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 196 117.7600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 78 117.7900 Open Market/Broker
Page 20 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- San Francisco Partners II, L.P. 8/16/2007 Buy 5 117.8000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 14 117.8700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 78 117.8731 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 117.8800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 117.9200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 117.9300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 29 117.9350 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 117.9429 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 34 117.9957 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 118.0000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.0700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.0900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 74 118.1727 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 25 118.1800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.2000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 118.2900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.3200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.3500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 118.3800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.3900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.4100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 118.6000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 118.6500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 118.6600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.6800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.6900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 49 118.7000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.8200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 118.8500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 34 118.8600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 1 118.8700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 29 118.8800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 118.9000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 18 118.9100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 118.9200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 34 118.9300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 118.9400 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 118.9500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 118.9600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 118.9900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 39 119.0000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.0100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.0200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.0600 Open Market/Broker
Page 21 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.0900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.1100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 39 119.2000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 25 119.2600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.2800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.3000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 29 119.3100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 119.3200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.3300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 25 119.3600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.3700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 54 119.3800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 54 119.3900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 25 119.4000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.4100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 34 119.4200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.4300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 24 119.4400 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 24 119.4700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 119.4800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 34 119.4900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 119.5300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 49 119.5500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 39 119.5600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 83 119.5824 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.5900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 119.6000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 24 119.6100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.6200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 34 119.6500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.6600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.6700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 49 119.6800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 119.6900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 49 119.7000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.7100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 29 119.7300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 44 119.7400 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.7500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 119.7600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 119.7700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 103 119.7800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.7900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 119.8000 Open Market/Broker
Page 22 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- San Francisco Partners II, L.P. 8/16/2007 Buy 22 119.8100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 78 119.8200 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 120 119.8300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 20 119.8400 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 10 119.8500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 5 119.8600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 64 119.8700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 24 119.8800 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 119.9000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 39 119.9100 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 44 119.9300 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 119.9400 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 59 119.9500 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 39 119.9600 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 15 119.9900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 386 120.0000 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 87 120.7083 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 68 121.4700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 9 121.6950 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 68 121.8593 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 73 121.8960 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 92 121.9211 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 97 121.9225 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 9 122.5900 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 14 122.9700 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 59 123.6142 Open Market/Broker San Francisco Partners II, L.P. 8/16/2007 Buy 108 123.7995 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 116.7600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 116.7800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 53 116.8709 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 116.9600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 225 117.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 86 117.2839 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 117.6750 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 117.6900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 65 117.7000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 22 117.7189 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 117.7400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 55 117.7500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 96 117.7600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 38 117.7900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 117.8000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 117.8700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 38 117.8731 Open Market/Broker
Page 23 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 117.8800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 117.9200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 117.9300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 14 117.9350 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 8 117.9429 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 17 117.9957 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 118.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.0700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.0900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 36 118.1727 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 118.1800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.2000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 118.2900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.3200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.3500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 118.3800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.3900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.4100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 118.6000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 118.6500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 118.6600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.6800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.6900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 24 118.7000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.8200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 118.8500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 17 118.8600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 1 118.8700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 14 118.8800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 118.9000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 118.9100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 118.9200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 17 118.9300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 118.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 118.9500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 118.9600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 118.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 19 119.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.0100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.0200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.0600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.0900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.1100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 19 119.2000 Open Market/Broker
Page 24 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.2600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.2800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.3000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 14 119.3100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 119.3200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.3300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.3600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.3700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 27 119.3800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 26 119.3900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.4000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.4100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 17 119.4200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.4300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.4400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.4700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 119.4800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 17 119.4900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 119.5300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 24 119.5500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 19 119.5600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 41 119.5824 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.5900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 119.6000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.6100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.6200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 17 119.6500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.6600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.6700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 24 119.6800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 119.6900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 24 119.7000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.7100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 14 119.7300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 22 119.7400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.7500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 119.7600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 119.7700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 50 119.7800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.7900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 119.8000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 11 119.8100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 38 119.8200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 59 119.8300 Open Market/Broker
Page 25 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/16/2007 Buy 10 119.8400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 119.8500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 2 119.8600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 31 119.8700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 12 119.8800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 119.9000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 19 119.9100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 22 119.9300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 119.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 29 119.9500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 19 119.9600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 119.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 191 120.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 44 120.7083 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 34 121.4700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 121.6950 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 34 121.8593 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 36 121.8960 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 46 121.9211 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 48 121.9225 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 5 122.5900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 7 122.9700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 29 123.6142 Open Market/Broker Phoebe Snow Foundation, Inc. 8/16/2007 Buy 53 123.7995 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 116.8709 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 9 117.0000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 4 117.2839 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 3 117.7000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 117.7189 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 117.7500 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 4 117.7600 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 117.7900 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 117.8731 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 117.9350 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 117.9957 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 118.1727 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 118.1800 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 118.7000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 118.8600 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 118.8800 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 118.9300 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.0000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.2000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.2600 Open Market/Broker
Page 26 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.3100 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.3600 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.3800 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.3900 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.4000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.4200 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.4400 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.4700 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.4900 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.5500 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.5600 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 119.5824 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.6100 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.6500 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.6800 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.7000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.7300 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.7400 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 119.7800 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 119.8200 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 119.8300 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.8700 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.8800 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.9100 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.9300 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.9500 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 119.9600 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 8 120.0000 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 120.7083 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 121.4700 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 121.6950 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 121.8593 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 2 121.8960 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 3 121.9211 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 3 121.9225 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 122.5900 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 122.9700 Open Market/Broker The Elizabeth R. and William J. Patterson Foundation 8/16/2007 Buy 1 123.6142 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/16/2007 Buy 2 123.7995 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 4,531 123.5606 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 3,236 124.6580 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 3,884 124.8029 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 277 124.9200 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 925 124.9420 Open Market/Broker
Page 27 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/17/2007 Buy 185 124.9700 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 92 125.0000 Open Market/Broker SPO Partners II, L.P. 8/17/2007 Buy 370 125.0000 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 235 123.5606 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 168 124.6580 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 201 124.8029 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 14 124.9200 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 48 124.9420 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 10 124.9700 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 5 125.0000 Open Market/Broker San Francisco Partners II, L.P. 8/17/2007 Buy 19 125.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 134 123.5606 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 96 124.6580 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 115 124.8029 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 9 124.9200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 27 124.9420 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 5 124.9700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 3 125.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/17/2007 Buy 11 125.0000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 123.9700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.0800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.1000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.2000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.2300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.2800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.2900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.3000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.3500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.3600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.3700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 98 124.4200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.4300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.4400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.5000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.5100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.5200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.5400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.5900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.6000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.6100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.6300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.6400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.6500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.6900 Open Market/Broker
Page 28 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/20/2007 Buy 389 124.7100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.7200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.7300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.7400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.7600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.7700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.7800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.8200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.8300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.8500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.8600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.8700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.8800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.8900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 124.9000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.9100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.9200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 124.9300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 124.9400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.9500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 292 124.9600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.9700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 124.9800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 124.9900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.0000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 125.0100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 125.0300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.0400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 779 125.0500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 125.0600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 125.0800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.0900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 125.1000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.1100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 292 125.1300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 292 125.1400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 779 125.1500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 125.1600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 584 125.1700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.1800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 125.1900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 779 125.2000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,168 125.2100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 292 125.2200 Open Market/Broker
Page 29 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/20/2007 Buy 292 125.2300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,266 125.2400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 779 125.2500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 125.2600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 292 125.2700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 584 125.2800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.2900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,558 125.3000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 97 125.3100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 195 125.3200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 125.3300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,168 125.3400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 2,142 125.3500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,266 125.3600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 292 125.3700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 389 125.3800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 125.3900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 779 125.4000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 681 125.4100 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 125.4200 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 974 125.4300 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,266 125.4400 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,168 125.4500 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 487 125.4600 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 1,363 125.4700 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 681 125.4800 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 681 125.4900 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 7,507 125.5000 Open Market/Broker SPO Partners II, L.P. 8/20/2007 Buy 96 127.2000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 123.9700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.0800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.1000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.2000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.2300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.2800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.2900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.3000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.3500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.3600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.3700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.4200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.4300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.4400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.5000 Open Market/Broker
Page 30 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.5100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.5200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.5400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.5900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.6000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.6100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.6300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.6400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.6500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.6900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 124.7100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.7200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.7300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.7400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.7600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.7700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.7800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.8200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.8300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.8500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.8600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.8700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.8800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.8900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 124.9000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.9100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.9200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 124.9300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 124.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.9500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 124.9600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.9700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 124.9800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 124.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 125.0100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 125.0300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.0400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 21 125.0500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 125.0600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 125.0800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.0900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 125.1000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.1100 Open Market/Broker
Page 31 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 125.1300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 125.1400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 21 125.1500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 125.1600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 16 125.1700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.1800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 125.1900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 21 125.2000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 32 125.2100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 125.2200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 125.2300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 34 125.2400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 21 125.2500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 125.2600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 125.2700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 16 125.2800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.2900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 42 125.3000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 125.3100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 5 125.3200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 125.3300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 32 125.3400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 58 125.3500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 34 125.3600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 8 125.3700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 11 125.3800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 125.3900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 21 125.4000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 19 125.4100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 125.4200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 26 125.4300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 34 125.4400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 32 125.4500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 13 125.4600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 37 125.4700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 19 125.4800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 19 125.4900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 193 125.5000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/20/2007 Buy 3 127.2000 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 879 124.0399 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,366 124.0679 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,074 124.0886 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 124.1350 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,269 124.3038 Open Market/Broker
Page 32 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/21/2007 Buy 781 124.3925 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 878 124.4556 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,562 124.5003 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 124.5033 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 124.5800 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,562 124.6250 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 124.6450 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 124.6600 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 124.7200 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 124.7900 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 124.7925 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 124.8100 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 127 124.8500 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 124.9500 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 124.9925 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 125.0000 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 125.0150 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,240 125.0261 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 125.0400 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,366 125.0607 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 125.1920 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 125.2067 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,171 125.2492 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 125.2833 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 125.3133 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 125.3300 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 781 125.3613 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 976 125.4100 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 125.4140 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,074 125.4173 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,074 125.4336 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,464 125.4493 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 125.4517 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 125.4640 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,659 125.5165 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,074 125.5200 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 125.5400 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 2,245 125.5422 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 125.5486 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 125.6000 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 125.6017 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,659 125.6241 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 125.6280 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 125.6500 Open Market/Broker
Page 33 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/21/2007 Buy 98 125.6900 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 125.6967 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 125.7117 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 125.7120 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 125.7125 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 125.7175 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,171 125.7242 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 125.7320 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 125.7400 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 125.7417 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 125.7900 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 125.8100 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,171 125.8192 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 125.8414 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 125.8471 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,659 125.8953 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 125.9300 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 878 125.9322 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,366 125.9721 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,269 125.9877 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,464 125.9987 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.0420 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.0650 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 126.0833 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 126.0857 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 126.0943 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.1100 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,171 126.1208 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.1240 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.1360 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.1483 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.1700 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 126.1743 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 126.1767 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,562 126.1788 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.1850 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.1950 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.2000 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 126.2100 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 126.2200 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,464 126.2247 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.2340 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.2350 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.2475 Open Market/Broker
Page 34 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 8/21/2007 Buy 98 126.2500 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.2517 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 781 126.2525 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.2567 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,366 126.2779 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 126.2800 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 98 126.3100 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 878 126.3367 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.3380 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 126.3450 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 488 126.3620 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.3883 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.3900 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.3950 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.4050 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 126.4133 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 126.4200 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 126.4500 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 781 126.4513 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.4567 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 390 126.4600 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 586 126.4667 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 195 126.4700 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 2,245 126.4737 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,171 126.4800 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,366 126.4807 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 878 126.4822 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 683 126.4829 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 126.4833 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 293 126.4833 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 878 126.4844 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,464 126.4967 Open Market/Broker SPO Partners II, L.P. 8/21/2007 Buy 1,562 126.5000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 17 124.0399 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 27 124.0679 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 21 124.0886 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 4 124.1350 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 25 124.3038 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 15 124.3925 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 17 124.4556 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 30 124.5003 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 124.5033 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 8 124.5800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 30 124.6250 Open Market/Broker
Page 35 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 124.6450 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 4 124.6600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 4 124.7200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 8 124.7900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 8 124.7925 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 124.8100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 3 124.8500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 124.9500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 8 124.9925 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 125.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 5 125.0150 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 25 125.0261 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 125.0400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 27 125.0607 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.1920 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 125.2067 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 24 125.2492 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 125.2833 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 125.3133 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 125.3300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 15 125.3613 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 20 125.4100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.4140 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 21 125.4173 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 21 125.4336 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 29 125.4493 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 125.4517 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.4640 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 33 125.5165 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 21 125.5200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 5 125.5400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 44 125.5422 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 125.5486 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.6000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 125.6017 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 33 125.6241 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.6280 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 5 125.6500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 125.6900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 125.6967 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 125.7117 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.7120 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.7125 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.7175 Open Market/Broker
Page 36 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/21/2007 Buy 24 125.7242 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.7320 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 125.7400 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 125.7417 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 125.7900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 125.8100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 24 125.8192 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 125.8414 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 125.8471 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 33 125.8953 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 125.9300 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 18 125.9322 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 27 125.9721 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 26 125.9877 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 29 125.9987 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.0420 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.0650 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 126.0833 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 126.0857 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 126.0943 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.1100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 24 126.1208 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.1240 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.1360 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.1483 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.1700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 126.1743 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 126.1767 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 30 126.1788 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.1850 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.1950 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.2000 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 126.2100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 126.2200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 29 126.2247 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.2340 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.2350 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.2475 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 126.2500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.2517 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 15 126.2525 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.2567 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 27 126.2779 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 126.2800 Open Market/Broker
Page 37 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 8/21/2007 Buy 2 126.3100 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 18 126.3367 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.3380 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 5 126.3450 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.3620 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.3883 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.3900 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.3950 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.4050 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 126.4133 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 126.4200 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 5 126.4500 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 15 126.4513 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.4567 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 9 126.4600 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 11 126.4667 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 5 126.4700 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 44 126.4737 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 24 126.4800 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 27 126.4807 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 18 126.4822 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 13 126.4829 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 126.4833 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 6 126.4833 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 18 126.4844 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 29 126.4967 Open Market/Broker Phoebe Snow Foundation, Inc. 8/21/2007 Buy 30 126.5000 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 124.0399 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 124.0679 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 124.0886 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 124.1350 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 124.3038 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 124.3925 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 124.4556 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 124.5003 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 124.6250 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 124.6450 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.0261 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.0607 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.1920 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.2492 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.2833 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.3613 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.4100 Open Market/Broker
Page 38 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.4140 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.4173 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.4336 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.4493 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.4517 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.4640 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.5165 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.5200 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 3 125.5422 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.5486 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.6000 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.6017 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.6241 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.6280 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.7117 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.7120 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.7242 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.7400 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.7417 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.8192 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.8414 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.8471 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.8953 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.9322 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.9721 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 125.9877 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 125.9987 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.0420 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.0857 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.0943 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.1208 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.1240 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.1360 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.1483 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.1700 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.1743 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 126.1788 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.2000 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 126.2247 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.2340 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.2517 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.2525 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.2567 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 126.2779 Open Market/Broker
Page 39 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.2800 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.3367 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.3380 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.3620 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.3883 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.3900 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4513 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4567 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4667 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 3 126.4737 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4800 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 126.4807 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4822 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4829 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 1 126.4844 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 126.4967 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 8/21/2007 Buy 2 126.5000 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 124.0399 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 124.0679 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 124.0886 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 124.3038 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 124.3925 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 124.4556 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 124.5003 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.5033 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 124.5800 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 124.6250 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.6450 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.6600 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.7200 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.7900 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.7925 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 124.9925 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.0000 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.0261 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.0607 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.1920 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.2067 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.2492 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.2833 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.3133 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 125.3613 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 125.4100 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.4140 Open Market/Broker
Page 40 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- John H. Scully's IRRA 8/21/2007 Buy 3 125.4173 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.4336 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.4493 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.4517 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.4640 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 125.5165 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.5200 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 5 125.5422 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 125.5486 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.6000 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.6017 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 125.6241 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.6280 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.6967 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7117 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7120 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7125 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7175 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.7242 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7320 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7400 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7417 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.7900 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.8100 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.8192 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 125.8414 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 125.8471 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 125.8953 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 125.9300 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 125.9322 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.9721 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.9877 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 125.9987 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.0420 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.0650 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.0833 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.0857 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.0943 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1100 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 126.1208 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1240 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1360 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1483 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1700 Open Market/Broker
Page 41 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- John H. Scully's IRRA 8/21/2007 Buy 2 126.1743 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1767 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 126.1788 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1850 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.1950 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.2000 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 126.2247 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.2340 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.2350 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.2475 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.2517 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.2525 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.2567 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 126.2779 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.2800 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.3367 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.3380 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.3620 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.3883 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.3900 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.3950 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4050 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4133 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4200 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.4513 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4567 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4600 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4667 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 5 126.4737 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 126.4800 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 126.4807 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.4822 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.4829 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4833 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 1 126.4833 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 2 126.4844 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 3 126.4967 Open Market/Broker John H. Scully's IRRA 8/21/2007 Buy 4 126.5000 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.0399 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 124.0679 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.0886 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.3038 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.3925 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.4556 Open Market/Broker
Page 42 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- William H. Patterson's IRA 8/21/2007 Buy 2 124.5003 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 124.6250 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.6450 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.7900 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.7925 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 124.9925 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.0261 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.0607 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.1920 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.2492 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.2833 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.3613 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.4100 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.4140 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.4173 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.4336 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.4493 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.4517 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.4640 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.5165 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.5200 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 3 125.5422 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.5486 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.6000 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.6017 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.6241 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.6280 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.7117 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.7120 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.7242 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.7400 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.7417 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.8192 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.8414 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.8471 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.8953 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.9322 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.9721 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 125.9877 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 125.9987 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.0420 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.0857 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.0943 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.1208 Open Market/Broker
Page 43 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- William H. Patterson's IRA 8/21/2007 Buy 1 126.1240 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.1360 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.1483 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.1700 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.1743 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 126.1788 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.2000 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 126.2247 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.2340 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.2517 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.2525 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.2567 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 126.2779 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.2800 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.3367 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.3380 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.3620 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.3883 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.3900 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4513 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4567 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4667 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 3 126.4737 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4800 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 126.4807 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4822 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4829 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 1 126.4844 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 126.4967 Open Market/Broker William H. Patterson's IRA 8/21/2007 Buy 2 126.5000 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 98 125.6600 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 98 125.6700 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 98 125.8000 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 98 125.8400 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 293 125.8700 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 781 125.8700 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 488 125.9000 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 5,271 125.9526 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 1,757 126.0017 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 4,978 126.1535 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 5,368 126.1780 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 781 126.2413 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,635 126.4612 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 1,854 126.6763 Open Market/Broker
Page 44 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 9/10/2007 Buy 2,830 126.8324 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,733 126.8400 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 1,659 126.8935 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,050 126.9148 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 976 126.9480 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,733 126.9557 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 4,783 126.9590 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 976 126.9640 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,050 126.9790 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 1,074 126.9791 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,733 126.9882 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 293 126.9900 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 1,757 126.9917 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,538 126.9923 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 878 126.9944 Open Market/Broker SPO Partners II, L.P. 9/10/2007 Buy 2,339 127.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 2 125.6600 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 2 125.6700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 2 125.8000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 2 125.8400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 7 125.8700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 19 125.8700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 12 125.9000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 129 125.9526 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 43 126.0017 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 122 126.1535 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 132 126.1780 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 19 126.2413 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 65 126.4612 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 46 126.6763 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 70 126.8324 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 67 126.8400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 41 126.8935 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 50 126.9148 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 24 126.9480 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 67 126.9557 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 117 126.9590 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 24 126.9640 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 50 126.9790 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 26 126.9791 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 67 126.9882 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 7 126.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 43 126.9917 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 62 126.9923 Open Market/Broker
Page 45 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 9/10/2007 Buy 22 126.9944 Open Market/Broker Phoebe Snow Foundation, Inc. 9/10/2007 Buy 61 127.0000 Open Market/Broker SPO Partners II, L.P. 9/21/2007 Buy 293 134.1200 Open Market/Broker SPO Partners II, L.P. 9/21/2007 Buy 100 134.1700 Open Market/Broker SPO Partners II, L.P. 9/21/2007 Buy 195 134.2800 Open Market/Broker SPO Partners II, L.P. 9/21/2007 Buy 1,953 134.2940 Open Market/Broker SPO Partners II, L.P. 9/21/2007 Buy 38,482 134.3000 Open Market/Broker SPO Partners II, L.P. 9/21/2007 Buy 977 134.3030 Open Market/Broker Phoebe Snow Foundation, Inc. 9/21/2007 Buy 7 134.1200 Open Market/Broker Phoebe Snow Foundation, Inc. 9/21/2007 Buy 2 134.1700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/21/2007 Buy 5 134.2800 Open Market/Broker Phoebe Snow Foundation, Inc. 9/21/2007 Buy 47 134.2940 Open Market/Broker Phoebe Snow Foundation, Inc. 9/21/2007 Buy 916 134.3000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/21/2007 Buy 23 134.3030 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 2,051 132.6186 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,270 132.6292 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 293 132.6300 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 98 132.6400 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 586 132.6500 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 781 132.6600 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 879 132.6700 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 725 132.6900 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 293 132.7000 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 781 132.7100 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 195 132.7200 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 293 132.7300 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,522 132.7400 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 879 132.7500 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 879 132.7933 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 195 132.9400 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 293 132.9700 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 195 132.9800 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 488 132.9900 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,953 133.0000 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 2,344 133.6171 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 488 133.6940 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,563 133.6994 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,074 133.7945 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 391 133.7950 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 391 133.8350 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 488 133.8660 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 391 133.8800 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 488 133.8980 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,367 133.9100 Open Market/Broker
Page 46 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 9/24/2007 Buy 98 133.9300 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 293 133.9400 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 98 133.9500 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,660 133.9618 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,074 133.9782 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 98 133.9800 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 684 133.9871 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 98 133.9900 Open Market/Broker SPO Partners II, L.P. 9/24/2007 Buy 1,463 134.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 49 132.6186 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 30 132.6292 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 7 132.6300 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 2 132.6400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 14 132.6500 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 19 132.6600 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 21 132.6700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 17 132.6900 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 7 132.7000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 19 132.7100 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 5 132.7200 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 7 132.7300 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 36 132.7400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 21 132.7500 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 21 132.7933 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 5 132.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 7 132.9700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 5 132.9800 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 12 132.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 47 133.0000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 56 133.6171 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 12 133.6940 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 37 133.6994 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 26 133.7945 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 9 133.7950 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 9 133.8350 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 12 133.8660 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 9 133.8800 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 12 133.8980 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 33 133.9100 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 2 133.9300 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 7 133.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 2 133.9500 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 40 133.9618 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 26 133.9782 Open Market/Broker
Page 47 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 9/24/2007 Buy 2 133.9800 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 16 133.9871 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 2 133.9900 Open Market/Broker Phoebe Snow Foundation, Inc. 9/24/2007 Buy 37 134.0000 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 878 129.7178 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 5,172 129.9640 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,855 129.9995 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 2,244 130.0830 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 293 130.0967 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,464 130.1300 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.1520 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,171 130.1658 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 293 130.1933 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,757 130.2117 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 684 130.2314 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 4,783 130.2562 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,073 130.3432 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 684 130.3536 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 195 130.3700 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 878 130.3911 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 2,635 130.4000 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.4200 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 2,050 130.4438 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 976 130.4500 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 684 130.4600 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 684 130.4871 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 130.5000 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 976 130.5100 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 146 130.5200 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 244 130.5300 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,171 130.5425 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 4,197 130.5649 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 586 130.5842 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 683 130.5929 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,562 130.6125 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.6320 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,171 130.6367 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 683 130.6386 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 130.6488 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 195 130.6500 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 130.6925 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,074 130.6982 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.7010 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,854 130.7016 Open Market/Broker
Page 48 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 9/25/2007 Buy 2,342 130.7167 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 130.7250 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,757 130.7264 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 130.7275 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 586 130.7333 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 4,880 130.7355 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 683 130.7357 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 878 130.7367 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 878 130.7422 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 40,211 130.7500 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,562 130.7569 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,464 130.7613 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,171 130.7656 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,464 130.7807 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.7840 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 781 130.7913 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 586 130.8083 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 98 130.8100 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,562 130.8131 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,074 130.8245 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.8360 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 878 130.8422 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 586 130.8467 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 781 130.8479 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 2,147 130.8534 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.8690 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,659 130.8818 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 195 130.8900 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 2,147 130.9152 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,171 130.9175 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,757 130.9336 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 586 130.9363 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 195 130.9400 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 586 130.9950 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 6,442 130.9974 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 130.9975 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 130.9980 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 976 131.0290 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 2,538 131.0375 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,464 131.0593 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 488 131.0680 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,464 131.1247 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 131.1300 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,659 131.1403 Open Market/Broker
Page 49 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- SPO Partners II, L.P. 9/25/2007 Buy 2,538 131.1667 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 390 131.1850 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 878 131.2144 Open Market/Broker SPO Partners II, L.P. 9/25/2007 Buy 1,269 131.6600 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 21 129.7178 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 124 129.9640 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 44 129.9995 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 54 130.0830 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 7 130.0967 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 35 130.1300 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.1520 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 28 130.1658 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 7 130.1933 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 42 130.2117 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.2314 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 114 130.2562 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 26 130.3432 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.3536 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 5 130.3700 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 21 130.3911 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 63 130.4000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.4200 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 49 130.4438 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 23 130.4500 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.4600 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.4871 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 10 130.5000 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 23 130.5100 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 4 130.5200 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 6 130.5300 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 28 130.5425 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 100 130.5649 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 14 130.5842 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.5929 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 37 130.6125 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.6320 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 28 130.6367 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.6386 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 130.6488 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 5 130.6500 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 130.6925 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 26 130.6982 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.7010 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 44 130.7016 Open Market/Broker
Page 50 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 9/25/2007 Buy 56 130.7167 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 130.7250 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 42 130.7264 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 130.7275 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 14 130.7333 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 117 130.7355 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 16 130.7357 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 21 130.7367 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 21 130.7422 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 961 130.7500 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 37 130.7569 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 35 130.7613 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 28 130.7656 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 35 130.7807 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.7840 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 19 130.7913 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 14 130.8083 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 2 130.8100 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 37 130.8131 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 26 130.8245 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.8360 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 21 130.8422 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 14 130.8467 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 19 130.8479 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 51 130.8534 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.8690 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 40 130.8818 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 5 130.8900 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 51 130.9152 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 28 130.9175 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 42 130.9336 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 14 130.9363 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 5 130.9400 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 14 130.9950 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 154 130.9974 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 130.9975 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 130.9980 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 23 131.0290 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 61 131.0375 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 35 131.0593 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 12 131.0680 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 35 131.1247 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 131.1300 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 40 131.1403 Open Market/Broker
Page 51 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- Phoebe Snow Foundation, Inc. 9/25/2007 Buy 61 131.1667 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 9 131.1850 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 21 131.2144 Open Market/Broker Phoebe Snow Foundation, Inc. 9/25/2007 Buy 30 131.6600 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 129.7178 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 4 129.9640 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 129.9995 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 2 130.0830 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.1300 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.1658 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.2117 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 3 130.2562 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.3432 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.3911 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 2 130.4000 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.4438 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.4500 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.5100 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.5425 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 3 130.5649 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.5929 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.6125 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.6367 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.6386 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.6488 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.6925 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 2 130.7016 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 2 130.7167 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7250 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7264 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7275 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 3 130.7355 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7357 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7367 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7422 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 28 130.7500 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7569 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7613 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7656 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.7807 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.8131 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.8422 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 2 130.8534 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.8818 Open Market/Broker
Page 52 of 53 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF NUMBER OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE SHARES SHARE ($) TRANSACTION EFFECTED - ---------------------------------- ----------- ---- --------- --------- -------------------- The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 2 130.9152 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.9175 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.9336 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 4 130.9974 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 130.9975 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.0290 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.0375 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.0593 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.1247 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.1300 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.1403 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.1667 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.1850 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.2144 Open Market/Broker The Elizabeth R. & William J. Patterson Foundation 9/25/2007 Buy 1 131.6600 Open Market/Broker
Page 53 of 53 pages EXHIBIT INDEX EXHIBIT DOCUMENT DESCRIPTION - ------- -------------------- A Agreement Pursuant to Rule 13d-1 (k) EX-99.A 2 ex-a.txt JOINT FILING AGREEMENT EXHIBIT A Pursuant to Rule 13d-1(k) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agrees that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth below. Dated: September 27, 2007 By: /s/ Kim M. Silva -------------------------- Kim M. Silva Attorney-in-Fact for: SPO PARTNERS II, L.P.(1) SPO ADVISORY PARTNERS, L.P.(1) SAN FRANCISCO PARTNERS II, L.P.(1) SF ADVISORY PARTNERS, L.P.(1) SPO ADVISORY CORP.(1) JOHN H. SCULLY(1) WILLIAM E. OBERNDORF(1) WILLIAM J. PATTERSON(1) PHOEBE SNOW FOUNDATION, INC.(1) THE ELIZABETH R. & WILLIAM J. PATTERSON FOUNDATION(1) (1) A Power of Attorney authorizing Kim M. Silva to act on behalf of this person or entity is filed as Exhibit B. -----END PRIVACY-ENHANCED MESSAGE-----