SEC Filing | Lamar Advertising

View:

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* LAMAR ADVERTISING COMPANY (Name of Issuer) CLASS A COMMON STOCK, PAR VALUE $0.001 PER SHARE (Title of Class of Securities) 512815101 (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) AUGUST 10, 2005 (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 87 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 5,390,100 (1) ------------------------------------------------------ Number Of Shares 8. SHARED VOTING POWER Beneficially Owned By -0- Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER 5,390,100 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,390,100 (1) - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.0% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN - -------------------------------------------------------------------------------- (1) Power is exercised through its sole general partner, SPO Advisory Partners, L.P.

CUSIP No. 512815101 Page 2 of 87 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 5,390,100 (1)(2) ------------------------------------------------------ Number Of Shares 8. SHARED VOTING POWER Beneficially Owned By -0- Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER 5,390,100 (1)(2) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,390,100 (1)(2) - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.0% - -------------------------------------------------------------------------------- 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. 512815101 Page 3 of 87 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 324,130 (1) ------------------------------------------------------ Number Of Shares 8. SHARED VOTING POWER Beneficially Owned By -0- Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER 324,130 (1) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 324,130 (1) - -------------------------------------------------------------------------------- 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. 512815101 Page 4 of 87 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 324,130 (1)(2) ------------------------------------------------------ Number Of Shares 8. SHARED VOTING POWER Beneficially Owned By -0- Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER 324,130 (1)(2) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 324,130 (1)(2) - -------------------------------------------------------------------------------- 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. 512815101 Page 5 of 87 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 5,714,230 (1)(2) ------------------------------------------------------ Number Of Shares 8. SHARED VOTING POWER Beneficially Owned By -0- Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER 5,714,230 (1)(2) ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,714,230 (1)(2) - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.3% - -------------------------------------------------------------------------------- 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 5,390,100 of such shares; and solely in its capacity as the sole general partner of SF Advisory Partners, L.P. with respect to 324,130 of such shares. (2) Power is exercised through its three controlling persons, John H. Scully, William E. Oberndorf and William J. Patterson.

CUSIP No. 512815101 Page 6 of 87 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 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 By 5,714,230 (1) Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER -0- ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER 5,714,230 (1) - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,714,230 (1) - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.3% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON IN - -------------------------------------------------------------------------------- (1) 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. 512815101 Page 7 of 87 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 By 5,714,230 (1) Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER -0- ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER 5,714,230 (1) - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,714,230 (1) - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.3% - -------------------------------------------------------------------------------- 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. 512815101 Page 8 of 87 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 -0- ------------------------------------------------------ Number Of Shares 8. SHARED VOTING POWER Beneficially Owned By 5,714,230 (1) Each Reporting Person ------------------------------------------------------ With 9. SOLE DISPOSITIVE POWER -0- ------------------------------------------------------ 10. SHARED DISPOSITIVE POWER 5,714,230 (1) - -------------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,714,230 (1) - -------------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| - -------------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.3% - -------------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON IN - -------------------------------------------------------------------------------- (1) These 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.

Page 9 of 87 pages ITEM 1. SECURITY AND ISSUER. This statement relates to the shares of Class A common stock, par value $0.001 per share ("Shares"), of Lamar Advertising Company, a Delaware corporation (the "Issuer"). The principal executive offices of the Issuer are located at 5551 Corporate Boulevard, Baton Rouge, Louisiana 70808. ITEM 2. IDENTITY AND BACKGROUND. (a) The undersigned hereby file this Schedule 13D Statement on behalf of SPO Partners II, L.P., a Delaware limited partnership ("SPO"), SPO Advisory Partners, L.P., a Delaware limited partnership ("SPO Advisory Partners"), San Francisco Partners II, L.P., a California limited partnership ("SFP"), SF Advisory Partners, L.P., a Delaware limited partnership ("SF Advisory Partners"), SPO Advisory Corp., a Delaware corporation ("SPO Advisory Corp."), John H. Scully ("JHS"), William E. Oberndorf ("WEO") and William J. Patterson ("WJP"). SPO, SPO Advisory Partners, SFP, SF Advisory Partners, SPO Advisory Corp., JHS, WEO and WJP are sometimes hereinafter referred to as the "Reporting Persons." The Reporting Persons are making this single, joint filing because they may be deemed to constitute a "group" within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the "Act"), although neither the fact of this filing nor anything contained herein shall be deemed to be an admission by the Reporting Persons that a group exists. (b) - (c) SPO SPO is a Delaware limited partnership, the principal business of which is the purchase, sale, exchange, acquisition and holding of investment securities. The principal business address of SPO, which also serves as its principal office, is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. Pursuant to Instruction C to Schedule 13D of the Act, certain information with respect to SPO Advisory Partners, the sole general partner of SPO, is set forth below. SPO ADVISORY PARTNERS SPO Advisory Partners is a Delaware limited partnership, the principal business of which is serving as the sole general partner of SPO. The principal business address of SPO Advisory Partners, which also serves as its principal office, is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. Pursuant to Instruction C to Schedule 13D of the Act, certain information with respect to SPO Advisory Corp., the sole general partner of SPO Advisory Partners, is set forth below. SFP SFP is a California limited partnership, the principal business of which is the purchase, sale, exchange, acquisition and holding of investment securities. The principal business address of SFP, which also serves as its principal office, is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. Pursuant to Instruction C to Schedule 13D of the Act, certain information with respect to SF Advisory Partners, the sole general partner of SFP, is set forth below. SF ADVISORY PARTNERS SF Advisory Partners is a Delaware limited partnership, the principal business of which is serving as the sole general partner of SFP. The principal business address of SF Advisory Partners,

Page 10 of 87 pages which also serves as its principal office, is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. Pursuant to Instruction C to Schedule 13D of the Act, certain information with respect to SPO Advisory Corp., the sole general partner of SF Advisory Partners, is set forth below. SPO ADVISORY CORP. SPO Advisory Corp. is a Delaware corporation, the principal business of which is serving as the sole general partner of each of SPO Advisory Partners and SF Advisory Partners. The principal business address of SPO Advisory Corp., which also serves as its principal office, is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. Pursuant to Instruction C to Schedule 13D of the Act, certain information with respect to JHS, WEO and WJP, the three controlling persons of SPO Advisory Corp., is set forth below. JHS JHS' business address is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. His present principal occupation is serving as a managing director of SPO Partners & Co., a Delaware corporation. The principal business of SPO Partners & Co. is operating as an investment firm. The principal business address of SPO Partners & Co., which serves as its principal office, is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. JHS is one of three controlling persons of SPO Advisory Corp., the sole general partner of each of SPO Advisory Partners and SF Advisory Partners. WEO WEO's business address is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. His present principal occupation is serving as a managing director of SPO Partners & Co. WEO is one of three controlling persons of SPO Advisory Corp., the sole general partner of SPO Advisory Partners and SF Advisory Partners. WJP WJP's business address is 591 Redwood Highway, Suite 3215, Mill Valley, California 94941. His present principal occupation is serving as a managing director of SPO Partners & Co. WJP is one of three controlling persons of SPO Advisory Corp., the sole general partner of SPO Advisory Partners and SF Advisory Partners. (d) None of the entities or persons identified in this Item 2 has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) None of the entities or persons identified in this Item 2 has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. (f) All of the natural persons identified in this Item 2 are citizens of the United States of America.

Page 11 of 87 pages 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 $226,841,150 SPO Advisory Partners Not Applicable Not Applicable SFP Contributions from Partners $13,656,171 SF Advisory Partners Not Applicable Not Applicable SPO Advisory Corp. Not Applicable Not Applicable JHS Not Applicable Not Applicable WEO Not Applicable Not Applicable WJP Not Applicable Not Applicable ITEM 4. PURPOSE OF TRANSACTION. The Reporting Persons have acquired the Shares reported herein for investment purposes. Consistent with such purpose, the Reporting Persons have had, and may have in the future, discussions with management of the Issuer and may make suggestions concerning the Issuer's operations, prospects, business and financial strategies, assets and liabilities, business and financing alternatives and such other matters as the Reporting Persons may deem relevant to their investments in the Shares and other securities of the Issuer. Each Reporting Person expects that it will, from time to time, review its investment position in the Issuer and may, depending on market and other conditions, increase or decrease its investment position in the Shares or other securities of the Issuer. Whether the Reporting Persons purchase any additional Shares or other securities of the Issuer or dispose of any Shares or other securities of the Issuer, and the amount and timing of any such transactions, will depend upon the Reporting Persons' individual continuing assessments of pertinent factors, including the availability of Shares or other securities of the Issuer for purchase at particular price levels, the Issuer's and the particular Reporting Person's business and prospects, other business investment opportunities available to the particular Reporting Person, economic conditions, stock market conditions, money market conditions, the attitudes and actions of the Board of Directors and management of the Issuer, the availability and nature of opportunities to dispose of the particular Reporting Person's interest in the Issuer, to realize trading profits or minimize trading losses, and other plans and requirements of the particular Reporting Person. Depending upon its individual assessments of these factors from time to time, each Reporting Person may change its present intentions as stated above, including determining to acquire additional Shares or other securities of the Issuer (by means of open market or privately negotiated purchases) or to dispose of some or all of the Shares or other securities of the Issuer held by or under the control of such Reporting Person. In addition, each Reporting Person may from time to time enter into equity swap or other derivative transactions with respect to its investment in the Shares or other securities of the Issuer. Except as set forth in this Item 4, the Reporting Persons have no present plans or proposals that relate to or that would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D of the Act.

Page 12 of 87 pages ITEM 5. INTEREST IN SECURITIES OF THE ISSUER. (a) Percentage interest calculations for each Reporting Person are based upon the Issuer having 90,062,811 total outstanding shares of Class A common stock as reported on the Issuer's 10-Q filed with the Securities and Exchange Commission on August 8, 2005. SPO The aggregate number of Shares that SPO owns beneficially, pursuant to Rule 13d-3 of the Act, is 5,390,100 Shares, which constitutes approximately 6.0% 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 5,390,100 Shares, which constitutes approximately 6.0% of the outstanding Shares. SFP The aggregate number of Shares that SFP owns beneficially, pursuant to Rule 13d-3 of the Act, is 324,130 Shares, which constitutes approximately 0.4% of the outstanding Shares. 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 324,130 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 5,714,230 Shares in the aggregate, which constitutes approximately 6.3% of the outstanding Shares. JHS Because of his position as a control person of SPO Advisory Corp., JHS may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 5,714,230 Shares, which constitutes approximately 6.3% of the outstanding Shares. WEO Because of his position 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 5,714,230 Shares, which constitutes approximately 6.3% of the outstanding Shares.

Page 13 of 87 pages WJP Because of his position as a control person of SPO Advisory Corp., WJP may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial owner of 5,714,230 Shares, which constitutes approximately 6.3% 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 5,390,100 Shares. 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 5,390,100 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 324,130 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 324,130 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 5,714,230 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 5,714,230 Shares held by SPO and SFP in the aggregate. 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 5,714,230 Shares held by SPO and SFP in the aggregate.

Page 14 of 87 pages WJP 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, 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 5,714,230 Shares held by SPO and SFP in the aggregate. (c) Within the past 60 days of the date of this statement, Reporting Persons purchased Shares in open market transactions on the Nasdaq National Market 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 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER. Except as set forth herein or in the Exhibits filed herewith, there are no other contracts, arrangements, understandings or relationships of the type required to be disclosed in response to Item 6 of Schedule 13D of the Act with respect to the Shares owned by the Reporting Persons. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS. Exhibit A: Agreement pursuant to Rule 13d-1 (k) Exhibit B: Power of Attorney

Page 15 of 87 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 August 22, 2005 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) (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 87 pages SCHEDULE I TO SCHEDULE 13D FOR SPO PARTNERS II, L.P. DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/20/2005 Buy 282 42.78 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 707 42.80 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 2,145 42.81 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 1,410 42.83 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 1,410 42.84 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 114 42.86 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 1,443 42.87 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 1,410 42.88 Open Market/Broker SPO Partners II, L.P. 6/20/2005 Buy 479 42.89 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 18 42.78 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 45 42.80 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 137 42.81 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 90 42.83 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 90 42.84 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 7 42.86 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 92 42.87 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 90 42.88 Open Market/Broker San Francisco Partners, L.P. 6/20/2005 Buy 31 42.89 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 94 42.09 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 376 42.10 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 282 42.11 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 846 42.14 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 188 42.17 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 470 42.22 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 94 42.23 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 291 42.26 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 179 42.27 Open Market/Broker

Page 17 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/21/2005 Buy 509 42.30 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 346 42.31 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 49 42.32 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 9 42.33 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 882 42.34 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 658 42.35 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 376 42.36 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 846 42.39 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 85 42.40 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 1,222 42.44 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 866 42.45 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 1,034 42.46 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,162 42.47 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 470 42.48 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 474 42.49 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 7,403 42.50 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 470 42.61 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 752 42.65 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,538 42.67 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,914 42.68 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,162 42.69 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,071 42.70 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 860 42.71 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 1,974 42.72 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,051 42.73 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 1,983 42.74 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 5,050 42.75 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 942 42.76 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 321 42.77 Open Market/Broker

Page 18 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/21/2005 Buy 159 42.78 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 2,247 42.79 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 1,284 42.80 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 940 42.81 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 282 42.83 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 94 42.84 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 420 42.86 Open Market/Broker SPO Partners II, L.P. 6/21/2005 Buy 75 42.88 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 6 42.09 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 24 42.10 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 18 42.11 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 54 42.14 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 12 42.17 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 30 42.22 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 6 42.23 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 19 42.26 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 11 42.27 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 33 42.30 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 22 42.31 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 3 42.32 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 1 42.33 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 56 42.34 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 42 42.35 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 24 42.36 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 54 42.39 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 5 42.40 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 78 42.44 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 55 42.45 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 66 42.46 Open Market/Broker

Page 19 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/21/2005 Buy 138 42.47 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 30 42.48 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 30 42.49 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 472 42.50 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 30 42.61 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 48 42.65 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 162 42.67 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 186 42.68 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 138 42.69 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 132 42.70 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 55 42.71 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 126 42.72 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 131 42.73 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 127 42.74 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 322 42.75 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 60 42.76 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 20 42.77 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 10 42.78 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 143 42.79 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 82 42.80 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 60 42.81 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 18 42.83 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 6 42.84 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 27 42.86 Open Market/Broker San Francisco Partners, L.P. 6/21/2005 Buy 28 42.88 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 94 41.99 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 2,726 42.00 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 4,233 42.01 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 940 42.02 Open Market/Broker

Page 20 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/22/2005 Buy 2,169 42.03 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,366 42.04 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 10,093 42.05 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 660 42.06 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 2,442 42.07 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,222 42.08 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,598 42.09 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 2,068 42.10 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 564 42.11 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 470 42.13 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,137 42.14 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 6,533 42.15 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 101 42.16 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 573 42.17 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 282 42.18 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 713 42.19 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 889 42.20 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 94 42.21 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 282 42.22 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 573 42.23 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,161 42.24 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,410 42.25 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 4,520 42.26 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,452 42.27 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,085 42.28 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 564 42.30 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 282 42.31 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 277 42.32 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 2,260 42.33 Open Market/Broker

Page 21 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/22/2005 Buy 188 42.34 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 280 42.35 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 622 42.36 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 470 42.37 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,803 42.39 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 169 42.44 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 8 42.45 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 282 42.46 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 489 42.49 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,769 42.60 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 487 42.62 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 453 42.63 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 94 42.65 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 94 42.71 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,410 42.74 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 1,128 42.75 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 372 42.84 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 286 42.86 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 94 42.89 Open Market/Broker SPO Partners II, L.P. 6/22/2005 Buy 469 42.94 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 6 41.99 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 174 42.00 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 270 42.01 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 60 42.02 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 138 42.03 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 87 42.04 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 644 42.05 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 42 42.06 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 156 42.07 Open Market/Broker

Page 22 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/22/2005 Buy 78 42.08 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 102 42.09 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 132 42.10 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 36 42.11 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 30 42.13 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 73 42.14 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 417 42.15 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 6 42.16 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 37 42.17 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.18 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 45 42.19 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 57 42.20 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 6 42.21 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.22 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 37 42.23 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 74 42.24 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 90 42.25 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 288 42.26 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 93 42.27 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 69 42.28 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 36 42.30 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.31 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.32 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 144 42.33 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 12 42.34 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.35 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 40 42.36 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 30 42.37 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 115 42.39 Open Market/Broker

Page 23 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/22/2005 Buy 11 42.44 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.46 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 31 42.49 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 113 42.60 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 31 42.62 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 29 42.63 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 6 42.65 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 6 42.71 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 90 42.74 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 72 42.75 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 24 42.84 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 18 42.86 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 6 42.89 Open Market/Broker San Francisco Partners, L.P. 6/22/2005 Buy 31 42.94 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 49 41.48 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 568 41.56 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 9 41.57 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 470 41.58 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 564 41.59 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,622 41.60 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 2,162 41.61 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,323 41.62 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 94 41.63 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 384 41.64 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 188 41.65 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 368 41.66 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,073 41.67 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 122 41.68 Open Market/Broker

Page 24 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/23/2005 Buy 376 41.69 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 109 41.70 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 49 41.71 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 529 41.72 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 153 41.75 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 103 41.76 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 207 41.77 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 282 41.78 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,147 41.80 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 928 41.81 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 940 41.82 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 94 41.83 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 149 41.85 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 9 41.86 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 2,884 41.87 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 3,596 41.88 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 5,289 41.90 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,685 41.91 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 944 41.92 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 2,999 41.93 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 367 41.94 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,433 41.95 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 2,761 41.96 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 59 41.97 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 940 42.00 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,927 42.01 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 564 42.03 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 282 42.05 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 3,290 42.08 Open Market/Broker

Page 25 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/23/2005 Buy 1,128 42.09 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,504 42.10 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 515 42.11 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 3,290 42.12 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 82 42.17 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,014 42.18 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,516 42.19 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 3,979 42.20 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 2,019 42.21 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 3,807 42.22 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 2,711 42.23 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,895 42.24 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 6,580 42.25 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,128 42.31 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,410 42.34 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 94 42.38 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,597 42.40 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,411 42.41 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 1,504 42.42 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 940 42.44 Open Market/Broker SPO Partners II, L.P. 6/23/2005 Buy 585 42.53 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 3 41.48 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 36 41.56 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 1 41.57 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 30 41.58 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 36 41.59 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 103 41.60 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 138 41.61 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 84 41.62 Open Market/Broker

Page 26 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/23/2005 Buy 6 41.63 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 24 41.64 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 12 41.65 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 24 41.66 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 68 41.67 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 8 41.68 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 24 41.69 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 7 41.70 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 3 41.71 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 34 41.72 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 10 41.75 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 7 41.76 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 13 41.77 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 18 41.78 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 73 41.80 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 59 41.81 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 60 41.82 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 6 41.83 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 9 41.85 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 1 41.86 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 184 41.87 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 230 41.88 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 338 41.90 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 108 41.91 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 60 41.92 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 191 41.93 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 23 41.94 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 91 41.95 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 176 41.96 Open Market/Broker

Page 27 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/23/2005 Buy 4 41.97 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 60 42.00 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 123 42.01 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 36 42.03 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 18 42.05 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 210 42.08 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 72 42.09 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 96 42.10 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 33 42.11 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 210 42.12 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 5 42.17 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 65 42.18 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 97 42.19 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 254 42.20 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 129 42.21 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 243 42.22 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 173 42.23 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 121 42.24 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 420 42.25 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 72 42.31 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 90 42.34 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 6 42.38 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 102 42.40 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 90 42.41 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 96 42.42 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 60 42.44 Open Market/Broker San Francisco Partners, L.P. 6/23/2005 Buy 17 42.53 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 352 41.62 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,810 41.63 Open Market/Broker

Page 28 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/24/2005 Buy 1,410 41.64 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,875 41.65 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,351 41.66 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 3,260 41.67 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,641 41.68 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,128 41.69 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 2,132 41.70 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 3,042 41.71 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 45 41.72 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 282 41.73 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 752 41.74 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 188 41.75 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,880 41.76 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 888 41.77 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 54 41.78 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 3,008 41.80 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 564 41.81 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,410 41.89 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,274 41.90 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 478 41.91 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 834 41.93 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 3,196 41.94 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,363 41.95 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 5,014 41.96 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 2,130 41.97 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,128 41.98 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 1,428 41.99 Open Market/Broker SPO Partners II, L.P. 6/24/2005 Buy 583 42.00 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 22 41.62 Open Market/Broker

Page 29 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/24/2005 Buy 116 41.63 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 90 41.64 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 120 41.65 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 86 41.66 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 208 41.67 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 105 41.68 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 72 41.69 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 136 41.70 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 194 41.71 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 3 41.72 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 18 41.73 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 48 41.74 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 12 41.75 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 120 41.76 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 57 41.77 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 3 41.78 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 192 41.80 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 36 41.81 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 90 41.89 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 81 41.90 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 30 41.91 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 53 41.93 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 204 41.94 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 87 41.95 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 320 41.96 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 136 41.97 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 72 41.98 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 72 41.99 Open Market/Broker San Francisco Partners, L.P. 6/24/2005 Buy 17 42.00 Open Market/Broker

Page 30 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/27/2005 Buy 7,520 40.94 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,820 40.99 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 1,880 41.00 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 6,580 41.01 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,820 41.02 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 940 41.04 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 5,640 41.05 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 1,880 41.06 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 11,750 41.07 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,820 41.08 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 940 41.09 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,350 41.10 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 3,290 41.11 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 3,760 41.12 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 4,230 41.13 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 940 41.14 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 4,700 41.15 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 4,230 41.16 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 5,170 41.17 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 7,990 41.19 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 12,220 41.20 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 6,110 41.21 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 3,290 41.22 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 9,400 41.23 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 8,930 41.25 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 1,880 41.27 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 940 41.28 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 29,610 41.30 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,820 41.31 Open Market/Broker

Page 31 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/27/2005 Buy 1,410 41.40 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,350 41.41 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 1,880 41.43 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 2,820 41.44 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 940 41.69 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 1,880 41.71 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 940 41.73 Open Market/Broker SPO Partners II, L.P. 6/27/2005 Buy 930 41.75 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 480 40.94 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 180 40.99 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 120 41.00 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 420 41.01 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 180 41.02 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 60 41.04 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 360 41.05 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 120 41.06 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 750 41.07 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 180 41.08 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 60 41.09 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 150 41.10 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 210 41.11 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 240 41.12 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 270 41.13 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 60 41.14 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 300 41.15 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 270 41.16 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 330 41.17 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 510 41.19 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 780 41.20 Open Market/Broker

Page 32 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/27/2005 Buy 390 41.21 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 210 41.22 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 600 41.23 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 570 41.25 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 120 41.27 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 60 41.28 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 1,890 41.30 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 180 41.31 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 90 41.40 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 150 41.41 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 120 41.43 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 180 41.44 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 60 41.69 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 120 41.71 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 60 41.73 Open Market/Broker San Francisco Partners, L.P. 6/27/2005 Buy 70 41.75 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 940 41.48 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 940 41.91 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 7,990 41.92 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 5,640 41.94 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 10,810 41.95 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 940 41.96 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 4,700 41.97 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 1,410 41.99 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 19,740 42.00 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 2,350 42.06 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 6,580 42.07 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 6,580 42.09 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 12,220 42.10 Open Market/Broker

Page 33 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/28/2005 Buy 940 42.12 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 940 42.13 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 940 42.25 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 1,880 42.40 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 2,068 42.45 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 4,700 42.46 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 3,290 42.47 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 1,410 42.49 Open Market/Broker SPO Partners II, L.P. 6/28/2005 Buy 5,492 42.50 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 60 41.48 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 60 41.91 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 510 41.92 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 360 41.94 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 690 41.95 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 60 41.96 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 300 41.97 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 90 41.99 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 1,260 42.00 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 150 42.06 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 420 42.07 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 420 42.09 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 780 42.10 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 60 42.12 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 60 42.13 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 60 42.25 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 120 42.40 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 132 42.45 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 300 42.46 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 210 42.47 Open Market/Broker

Page 34 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/28/2005 Buy 90 42.49 Open Market/Broker San Francisco Partners, L.P. 6/28/2005 Buy 308 42.50 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 1,880 42.40 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.41 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.45 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.46 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.47 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 1,410 42.51 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 5,640 42.55 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 1,880 42.56 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.58 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.59 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.60 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 2,820 42.61 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 3,760 42.62 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 4,700 42.63 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 1,880 42.65 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 3,290 42.67 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 1,880 42.69 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 4,700 42.70 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 1,410 42.71 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 940 42.72 Open Market/Broker SPO Partners II, L.P. 6/29/2005 Buy 3,230 42.75 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 120 42.40 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.41 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.45 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.46 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.47 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 90 42.51 Open Market/Broker

Page 35 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 6/29/2005 Buy 360 42.55 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 120 42.56 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.58 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.59 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.60 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 180 42.61 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 240 42.62 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 300 42.63 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 120 42.65 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 210 42.67 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 120 42.69 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 300 42.70 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 90 42.71 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 60 42.72 Open Market/Broker San Francisco Partners, L.P. 6/29/2005 Buy 270 42.75 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 940 42.7400 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 3,760 42.7500 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 940 42.7700 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 282 42.7865 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 282 42.7989 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 2,256 42.8000 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 1,880 42.8100 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 3,290 42.8200 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 940 42.8300 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 564 42.8500 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 282 42.8533 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 94 42.8700 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 1,222 42.8800 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 1,504 42.8900 Open Market/Broker

Page 36 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 6/30/2005 Buy 188 42.9000 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 1,974 42.9100 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 2,080 42.9200 Open Market/Broker SPO Partners II, L.P. 6/30/2005 Buy 6,222 42.9500 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 60 42.7400 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 240 42.7500 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 60 42.7700 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 18 42.7865 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 18 42.7989 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 144 42.8000 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 120 42.8100 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 210 42.8200 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 60 42.8300 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 36 42.8500 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 18 42.8533 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 6 42.8700 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 78 42.8800 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 96 42.8900 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 12 42.9000 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 126 42.9100 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 133 42.9200 Open Market/Broker San Francisco Partners, L.P. 6/30/2005 Buy 378 42.9500 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 526 42.30 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 219 42.31 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 376 42.38 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 841 42.39 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 470 42.40 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 905 42.42 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 752 42.43 Open Market/Broker

Page 37 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/1/2005 Buy 317 42.44 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 3,809 42.45 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 1,222 42.46 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 3,927 42.47 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 1,351 42.48 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 1,982 42.49 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 5,020 42.50 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 4,819 42.51 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 2,068 42.52 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 1,878 42.74 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 94 42.79 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 48 42.80 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 305 42.82 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 9 42.83 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 752 42.85 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 776 42.86 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 20 42.87 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 376 42.88 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 320 42.89 Open Market/Broker SPO Partners II, L.P. 7/1/2005 Buy 2,518 42.91 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 34 42.30 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 14 42.31 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 24 42.38 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 54 42.39 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 30 42.40 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 58 42.42 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 48 42.43 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 20 42.44 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 243 42.45 Open Market/Broker

Page 38 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/1/2005 Buy 78 42.46 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 251 42.47 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 86 42.48 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 126 42.49 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 320 42.50 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 308 42.51 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 132 42.52 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 120 42.74 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 6 42.79 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 3 42.80 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 19 42.82 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 1 42.83 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 48 42.85 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 50 42.86 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 1 42.87 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 24 42.88 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 20 42.89 Open Market/Broker San Francisco Partners, L.P. 7/1/2005 Buy 182 42.91 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 94 42.20 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 752 42.21 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 731 42.22 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 192 42.23 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 1,428 42.24 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 3,844 42.25 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 2,404 42.26 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 1,305 42.27 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 4,733 42.28 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 2,760 42.29 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 3,889 42.30 Open Market/Broker

Page 39 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/5/2005 Buy 33 42.31 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 3,541 42.33 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 1,100 42.34 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 3,088 42.35 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 94 42.36 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 1,034 42.37 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 188 42.38 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 188 42.39 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 470 42.40 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 188 42.41 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 376 42.42 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 470 42.43 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 3,478 42.44 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 1,410 42.45 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 986 42.46 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 1,410 42.47 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 2,995 42.48 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 2,632 42.49 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 632 42.52 Open Market/Broker SPO Partners II, L.P. 7/5/2005 Buy 555 42.53 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 6 42.20 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 48 42.21 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 47 42.22 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 12 42.23 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 91 42.24 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 245 42.25 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 153 42.26 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 83 42.27 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 302 42.28 Open Market/Broker

Page 40 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/5/2005 Buy 176 42.29 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 248 42.30 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 2 42.31 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 226 42.33 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 70 42.34 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 197 42.35 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 6 42.36 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 66 42.37 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 12 42.38 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 12 42.39 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 30 42.40 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 12 42.41 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 24 42.42 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 30 42.43 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 222 42.44 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 90 42.45 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 63 42.46 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 90 42.47 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 191 42.48 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 168 42.49 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 40 42.52 Open Market/Broker San Francisco Partners, L.P. 7/5/2005 Buy 38 42.53 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 282 42.11 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 979 42.12 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 282 42.14 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,598 42.15 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 855 42.16 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,384 42.17 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 3,667 42.18 Open Market/Broker

Page 41 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/6/2005 Buy 1,726 42.19 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 14,463 42.20 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 564 42.21 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,919 42.22 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,379 42.23 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,385 42.24 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 5,350 42.25 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 2,456 42.26 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 3,384 42.28 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 2,675 42.29 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 601 42.30 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,845 42.31 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,716 42.32 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 870 42.33 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 2,056 42.34 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 2,820 42.36 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 94 42.37 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 752 42.38 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 658 42.39 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 171 42.40 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 470 42.42 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 85 42.46 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 573 42.47 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,222 42.48 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 3,724 42.49 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 2,058 42.50 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 94 42.52 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 566 42.53 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,145 42.54 Open Market/Broker

Page 42 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/6/2005 Buy 572 42.55 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 169 42.56 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 470 42.57 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 1,416 42.60 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 459 42.64 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 846 42.65 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 514 42.67 Open Market/Broker SPO Partners II, L.P. 7/6/2005 Buy 186 42.69 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 18 42.11 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 63 42.12 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 18 42.14 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 102 42.15 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 55 42.16 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 88 42.17 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 234 42.18 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 110 42.19 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 923 42.20 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 36 42.21 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 123 42.22 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 88 42.23 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 88 42.24 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 341 42.25 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 157 42.26 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 216 42.28 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 171 42.29 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 38 42.30 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 118 42.31 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 109 42.32 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 55 42.33 Open Market/Broker

Page 43 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/6/2005 Buy 131 42.34 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 180 42.36 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 6 42.37 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 48 42.38 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 42 42.39 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 11 42.40 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 30 42.42 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 5 42.46 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 37 42.47 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 78 42.48 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 238 42.49 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 131 42.50 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 6 42.52 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 36 42.53 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 73 42.54 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 36 42.55 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 11 42.56 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 30 42.57 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 90 42.60 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 29 42.64 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 54 42.65 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 33 42.67 Open Market/Broker San Francisco Partners, L.P. 7/6/2005 Buy 14 42.69 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 1,238 42.07 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 1,671 42.08 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 1,880 42.10 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.13 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.14 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 5,170 42.22 Open Market/Broker

Page 44 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/7/2005 Buy 752 42.23 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.25 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 752 42.27 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 94 42.28 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 246 42.29 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 6,580 42.30 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 4,321 42.31 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 191 42.32 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 1,880 42.33 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 1,786 42.34 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 7,426 42.35 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 939 42.36 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 1,880 42.37 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.40 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.41 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.42 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.43 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 376 42.45 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 397 42.50 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 282 42.51 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 846 42.53 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 188 42.61 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 658 42.62 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 302 42.64 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 940 42.65 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 867 42.69 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 188 42.73 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 470 42.74 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 7,226 42.75 Open Market/Broker

Page 45 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/7/2005 Buy 775 42.84 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 188 42.85 Open Market/Broker SPO Partners II, L.P. 7/7/2005 Buy 211 43.10 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 79 42.07 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 107 42.08 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 120 42.10 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.13 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.14 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 330 42.22 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 48 42.23 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.25 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 48 42.27 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 6 42.28 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 16 42.29 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 420 42.30 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 276 42.31 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 12 42.32 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 120 42.33 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 114 42.34 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 474 42.35 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.36 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 120 42.37 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.40 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.41 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.42 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.43 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 24 42.45 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 25 42.50 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 18 42.51 Open Market/Broker

Page 46 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/7/2005 Buy 54 42.53 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 12 42.61 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 42 42.62 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 19 42.64 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 60 42.65 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 55 42.69 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 12 42.73 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 30 42.74 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 461 42.75 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 93 42.84 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 12 42.85 Open Market/Broker San Francisco Partners, L.P. 7/7/2005 Buy 13 43.10 Open Market/Broker SPO Partners II, L.P. 7/8/2005 Buy 940 42.87 Open Market/Broker SPO Partners II, L.P. 7/8/2005 Buy 470 42.88 Open Market/Broker SPO Partners II, L.P. 7/8/2005 Buy 3,290 42.90 Open Market/Broker SPO Partners II, L.P. 7/8/2005 Buy 470 42.93 Open Market/Broker SPO Partners II, L.P. 7/8/2005 Buy 282 42.94 Open Market/Broker SPO Partners II, L.P. 7/8/2005 Buy 148 42.95 Open Market/Broker San Francisco Partners, L.P. 7/8/2005 Buy 60 42.87 Open Market/Broker San Francisco Partners, L.P. 7/8/2005 Buy 30 42.88 Open Market/Broker San Francisco Partners, L.P. 7/8/2005 Buy 210 42.90 Open Market/Broker San Francisco Partners, L.P. 7/8/2005 Buy 30 42.93 Open Market/Broker San Francisco Partners, L.P. 7/8/2005 Buy 18 42.94 Open Market/Broker San Francisco Partners, L.P. 7/8/2005 Buy 52 42.95 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 188 42.74 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 282 42.75 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 376 42.76 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 752 42.77 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 94 42.78 Open Market/Broker

Page 47 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/14/2005 Buy 564 42.79 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 9,024 42.80 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 470 42.82 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 2,068 42.83 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 470 42.84 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 2,256 42.85 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 3,854 42.86 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 376 42.87 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 376 42.88 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 1,034 42.89 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 15,886 42.90 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 566 42.91 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 374 42.92 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 376 42.93 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 1,025 42.94 Open Market/Broker SPO Partners II, L.P. 7/14/2005 Buy 3,089 42.95 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 12 42.74 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 18 42.75 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 24 42.76 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 48 42.77 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 6 42.78 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 36 42.79 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 576 42.80 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 30 42.82 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 132 42.83 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 30 42.84 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 144 42.85 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 246 42.86 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 24 42.87 Open Market/Broker

Page 48 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/14/2005 Buy 24 42.88 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 66 42.89 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 1,014 42.90 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 36 42.91 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 24 42.92 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 24 42.93 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 65 42.94 Open Market/Broker San Francisco Partners, L.P. 7/14/2005 Buy 221 42.95 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 43.73 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 43.76 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 43.78 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 470 43.79 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 188 43.80 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 188 43.85 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 188 43.87 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 43.88 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 43.89 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 43.90 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 43.91 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 376 43.92 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 188 43.93 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 43.94 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 188 43.95 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 6 43.96 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 43.97 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 111 43.98 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 43.99 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 470 44.01 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 44.02 Open Market/Broker

Page 49 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/27/2005 Buy 282 44.03 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 354 44.11 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 44.12 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 44.14 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 44.15 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 94 44.17 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 376 44.18 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 328 44.22 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 742 44.23 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 369 44.25 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 44.26 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 282 44.27 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 564 44.28 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 1,145 44.29 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 4,700 44.30 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 846 44.31 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 1,034 44.32 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 2,679 44.33 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 3,572 44.34 Open Market/Broker SPO Partners II, L.P. 7/27/2005 Buy 846 44.35 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 43.73 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 43.76 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 43.78 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 30 43.79 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 12 43.80 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 12 43.85 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 12 43.87 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 43.88 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 43.89 Open Market/Broker

Page 50 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/27/2005 Buy 18 43.90 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 43.91 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 24 43.92 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 12 43.93 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 43.94 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 12 43.95 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 43.97 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 7 43.98 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 43.99 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 30 44.01 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 44.02 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 44.03 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 23 44.11 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 44.12 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 44.14 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 44.15 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 6 44.17 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 24 44.18 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 21 44.22 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 47 44.23 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 24 44.25 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 44.26 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 18 44.27 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 36 44.28 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 73 44.29 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 300 44.30 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 54 44.31 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 66 44.32 Open Market/Broker

Page 51 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/27/2005 Buy 171 44.33 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 228 44.34 Open Market/Broker San Francisco Partners, L.P. 7/27/2005 Buy 54 44.35 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 83 43.99 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 564 44.00 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,151 44.01 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,956 44.02 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,692 44.03 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,504 44.04 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 658 44.05 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 752 44.06 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 993 44.07 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 3,196 44.08 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 2,367 44.09 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 3,075 44.10 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 2,255 44.11 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 2,256 44.12 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,786 44.13 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 940 44.14 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,431 44.15 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 846 44.17 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 696 44.18 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 282 44.19 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 752 44.20 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 470 44.21 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,316 44.22 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,505 44.24 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 8,272 44.25 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 564 44.26 Open Market/Broker

Page 52 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 7/28/2005 Buy 1,034 44.27 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,786 44.28 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 940 44.29 Open Market/Broker SPO Partners II, L.P. 7/28/2005 Buy 1,878 44.30 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 5 43.99 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 36 44.00 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 73 44.01 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 125 44.02 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 108 44.03 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 96 44.04 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 42 44.05 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 48 44.06 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 63 44.07 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 204 44.08 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 151 44.09 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 196 44.10 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 144 44.11 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 144 44.12 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 114 44.13 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 60 44.14 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 91 44.15 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 54 44.17 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 44 44.18 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 18 44.19 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 48 44.20 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 30 44.21 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 84 44.22 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 96 44.24 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 528 44.25 Open Market/Broker

Page 53 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/28/2005 Buy 36 44.26 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 66 44.27 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 114 44.28 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 60 44.29 Open Market/Broker San Francisco Partners, L.P. 7/28/2005 Buy 122 44.30 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 132 43.91 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,090 43.92 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 564 43.93 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 658 43.94 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,523 43.95 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 2,049 43.96 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,814 43.97 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,946 43.98 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 2,350 43.99 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 3,602 44.00 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 12,284 44.01 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 2,021 44.02 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,133 44.03 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,687 44.04 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 5,491 44.05 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 9,691 44.06 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 3,565 44.07 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 2,533 44.08 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,043 44.09 Open Market/Broker SPO Partners II, L.P. 7/29/2005 Buy 1,224 44.10 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 8 43.91 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 70 43.92 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 36 43.93 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 42 43.94 Open Market/Broker

Page 54 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 7/29/2005 Buy 97 43.95 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 131 43.96 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 116 43.97 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 124 43.98 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 150 43.99 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 230 44.00 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 784 44.01 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 129 44.02 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 72 44.03 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 108 44.04 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 351 44.05 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 619 44.06 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 228 44.07 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 162 44.08 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 67 44.09 Open Market/Broker San Francisco Partners, L.P. 7/29/2005 Buy 76 44.10 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 470 43.85 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,222 43.86 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 3,008 43.87 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 4,888 43.88 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 2,256 43.89 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 3,572 43.90 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 2,106 43.91 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 5,978 43.92 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 5,452 43.93 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,410 43.94 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 2,687 43.95 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 2,077 43.96 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,816 43.97 Open Market/Broker

Page 55 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/1/2005 Buy 1,034 43.98 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,786 43.99 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,410 44.00 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 940 44.01 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 849 44.02 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 2,817 44.03 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 564 44.04 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 2,076 44.05 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,478 44.06 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 188 44.07 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,898 44.08 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 1,128 44.09 Open Market/Broker SPO Partners II, L.P. 8/1/2005 Buy 4,690 44.10 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 30 43.85 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 78 43.86 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 192 43.87 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 312 43.88 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 144 43.89 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 228 43.90 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 134 43.91 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 382 43.92 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 348 43.93 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 90 43.94 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 171 43.95 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 133 43.96 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 116 43.97 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 66 43.98 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 114 43.99 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 90 44.00 Open Market/Broker

Page 56 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/1/2005 Buy 60 44.01 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 54 44.02 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 180 44.03 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 36 44.04 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 133 44.05 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 94 44.06 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 12 44.07 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 121 44.08 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 72 44.09 Open Market/Broker San Francisco Partners, L.P. 8/1/2005 Buy 310 44.10 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 1,504 43.85 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 658 43.86 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 323 43.87 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 940 43.88 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 2,068 43.89 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 5,881 43.90 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 2,745 43.91 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 2,162 43.92 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 2,822 43.93 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 3,946 43.94 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 12,577 43.95 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 10,195 43.96 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 7,616 43.97 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 5,874 43.98 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 6,950 43.99 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 19,936 44.00 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 22,459 44.01 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 7,907 44.02 Open Market/Broker

Page 57 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/2/2005 Buy 4,697 44.03 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 3,478 44.04 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 11,580 44.05 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 3,847 44.06 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 1,692 44.07 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 2,434 44.08 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 2,045 44.09 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 3,343 44.10 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 1,180 44.11 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 1,523 44.12 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 368 44.13 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 94 44.15 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 282 44.17 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 94 44.19 Open Market/Broker SPO Partners II, L.P. 8/2/2005 Buy 80 44.20 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 96 43.85 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 42 43.86 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 21 43.87 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 60 43.88 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 132 43.89 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 375 43.90 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 175 43.91 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 138 43.92 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 180 43.93 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 252 43.94 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 803 43.95 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 651 43.96 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 486 43.97 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 375 43.98 Open Market/Broker

Page 58 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/2/2005 Buy 444 43.99 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 1,273 44.00 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 1,434 44.01 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 505 44.02 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 300 44.03 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 222 44.04 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 739 44.05 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 246 44.06 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 108 44.07 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 155 44.08 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 130 44.09 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 213 44.10 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 75 44.11 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 97 44.12 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 23 44.13 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 6 44.15 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 18 44.17 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 6 44.19 Open Market/Broker San Francisco Partners, L.P. 8/2/2005 Buy 20 44.20 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,504 43.91 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 573 43.92 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 5,293 43.93 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,880 43.94 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 4,982 43.95 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,167 43.96 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 2,403 43.97 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,484 43.98 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,864 43.99 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 5,194 44.00 Open Market/Broker

Page 59 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/3/2005 Buy 2,054 44.01 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,701 44.02 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 2,895 44.03 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 2,256 44.04 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,340 44.05 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 2,045 44.06 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 1,974 44.07 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 940 44.08 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 752 44.09 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 3,468 44.10 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 104 44.11 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 470 44.12 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 94 44.14 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 188 44.15 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 94 44.18 Open Market/Broker SPO Partners II, L.P. 8/3/2005 Buy 381 44.20 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 96 43.91 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 37 43.92 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 338 43.93 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 120 43.94 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 318 43.95 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 74 43.96 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 153 43.97 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 95 43.98 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 119 43.99 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 331 44.00 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 131 44.01 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 109 44.02 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 185 44.03 Open Market/Broker

Page 60 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/3/2005 Buy 144 44.04 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 85 44.05 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 130 44.06 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 126 44.07 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 60 44.08 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 48 44.09 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 221 44.10 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 7 44.11 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 30 44.12 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 6 44.14 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 12 44.15 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 6 44.18 Open Market/Broker San Francisco Partners, L.P. 8/3/2005 Buy 19 44.20 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 301 43.95 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 733 43.96 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 752 43.97 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 188 43.98 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 1,222 43.99 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 940 44.00 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 1,128 44.01 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 1,692 44.02 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 650 44.03 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 376 44.04 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 2,590 44.05 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 230 44.06 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 484 44.07 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 362 44.08 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 290 44.09 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 10,058 44.10 Open Market/Broker

Page 61 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/4/2005 Buy 752 44.11 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 658 44.12 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 94 44.13 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 1,222 44.14 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 1,222 44.15 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 2,079 44.16 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 1,081 44.17 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 2,339 44.18 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 2,867 44.19 Open Market/Broker SPO Partners II, L.P. 8/4/2005 Buy 2,890 44.20 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 19 43.95 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 47 43.96 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 48 43.97 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 12 43.98 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 78 43.99 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 60 44.00 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 72 44.01 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 108 44.02 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 42 44.03 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 24 44.04 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 165 44.05 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 15 44.06 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 31 44.07 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 23 44.08 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 18 44.09 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 642 44.10 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 48 44.11 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 42 44.12 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 6 44.13 Open Market/Broker

Page 62 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/4/2005 Buy 78 44.14 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 78 44.15 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 133 44.16 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 69 44.17 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 149 44.18 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 183 44.19 Open Market/Broker San Francisco Partners, L.P. 8/4/2005 Buy 210 44.20 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 752 43.91 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 2,538 43.93 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 2,520 43.94 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 4,334 43.95 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 4,597 43.96 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 8,108 43.97 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 5,264 43.98 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 5,241 43.99 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 5,585 44.00 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 6,745 44.01 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 4,324 44.02 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 1,699 44.03 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 2,249 44.04 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 470 44.05 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 658 44.06 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 188 44.07 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 851 44.08 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 1,217 44.09 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 376 44.11 Open Market/Broker SPO Partners II, L.P. 8/5/2005 Buy 1,384 44.20 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 48 43.91 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 162 43.93 Open Market/Broker

Page 63 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/5/2005 Buy 161 43.94 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 277 43.95 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 293 43.96 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 518 43.97 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 336 43.98 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 334 43.99 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 356 44.00 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 431 44.01 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 276 44.02 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 108 44.03 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 144 44.04 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 30 44.05 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 42 44.06 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 12 44.07 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 54 44.08 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 78 44.09 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 24 44.11 Open Market/Broker San Francisco Partners, L.P. 8/5/2005 Buy 116 44.20 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 12,717 40.40 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 26,301 40.45 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 16,262 40.47 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 15,322 40.52 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 6,285 40.59 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 16,544 40.60 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 13,811 40.60 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 16,466 40.65 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 22,544 40.70 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 15,651 40.70 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 56,442 40.75 Open Market/Broker

Page 64 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/8/2005 Buy 28,123 40.77 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 3,936 40.78 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 10,763 40.79 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 23,500 40.80 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 15,134 40.80 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 23,311 40.84 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 11,092 40.86 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 9,729 40.89 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 22,467 40.90 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 13,630 40.91 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 26,394 40.91 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 376 40.94 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 188 40.95 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 376 40.96 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 282 40.97 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 188 40.98 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 64,705 41.00 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 54,612 41.00 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 4,700 41.02 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 1,128 41.03 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 73,226 41.05 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 641,832 41.05 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 94 41.08 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 1,034 41.09 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 14,630 41.10 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 376 41.12 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 13,463 41.13 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 6,862 41.14 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 64,683 41.15 Open Market/Broker

Page 65 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/8/2005 Buy 5,208 41.16 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 6,694 41.16 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 4,606 41.17 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 38,064 41.18 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 19,458 41.20 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 1,410 41.21 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 7,726 41.22 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 290 41.23 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 3,102 41.24 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 30,397 41.25 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 4,756 41.28 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 7,614 41.30 Open Market/Broker SPO Partners II, L.P. 8/8/2005 Buy 93,996 41.30 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 812 40.40 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,679 40.45 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,038 40.47 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 978 40.52 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 401 40.59 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,056 40.60 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 882 40.60 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,051 40.65 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,439 40.70 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 999 40.70 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 3,603 40.75 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,795 40.77 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 251 40.78 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 687 40.79 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,500 40.80 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 966 40.80 Open Market/Broker

Page 66 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/8/2005 Buy 1,488 40.84 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 708 40.86 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 621 40.89 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,434 40.90 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 870 40.91 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,685 40.91 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 24 40.94 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 12 40.95 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 24 40.96 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 18 40.97 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 12 40.98 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 4,130 41.00 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 3,486 41.00 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 300 41.02 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 72 41.03 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 4,674 41.05 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 40,968 41.05 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 6 41.08 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 66 41.09 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 934 41.10 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 24 41.12 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 859 41.13 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 438 41.14 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 4,129 41.15 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 332 41.16 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 427 41.16 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 294 41.17 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 2,430 41.18 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,242 41.20 Open Market/Broker

Page 67 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/8/2005 Buy 90 41.21 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 493 41.22 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 19 41.23 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 198 41.24 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 1,940 41.25 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 304 41.28 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 486 41.30 Open Market/Broker San Francisco Partners, L.P. 8/8/2005 Buy 6,004 41.30 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,350 40.66 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,367 40.73 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,427 40.87 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,444 40.95 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 1,880 40.99 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,444 41.00 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,538 41.10 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,350 41.11 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,350 41.11 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,350 41.21 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 282 41.41 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 27,279 41.72 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 183,939 41.75 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 9,978 41.97 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 55,978 41.99 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 169,044 42.00 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 752 42.59 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 470 42.60 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 846 42.64 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 940 42.67 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 4,700 42.70 Open Market/Broker

Page 68 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/9/2005 Buy 9,712 42.72 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 4,606 42.75 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 23,500 42.75 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 11,098 42.75 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 23,511 42.76 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 4,700 42.78 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,385 42.81 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 15,230 42.82 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,350 42.82 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 4,700 42.82 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 1,504 42.82 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 7,203 42.85 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 5,264 42.85 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 94 42.85 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 5,929 42.88 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,625 42.88 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 9,964 42.90 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 13,779 42.90 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 7,050 42.95 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 2,350 42.98 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 26,123 42.98 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 21,150 43.00 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 94,000 43.05 Open Market/Broker SPO Partners II, L.P. 8/9/2005 Buy 163,465 43.10 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 150 40.66 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 151 40.73 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 155 40.87 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 156 40.95 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 120 40.99 Open Market/Broker

Page 69 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/9/2005 Buy 156 41.00 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 162 41.10 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 150 41.11 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 150 41.11 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 150 41.21 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 18 41.41 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 1,741 41.72 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 11,741 41.75 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 637 41.97 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 3,573 41.99 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 10,790 42.00 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 48 42.59 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 30 42.60 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 54 42.64 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 60 42.67 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 300 42.70 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 620 42.72 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 294 42.75 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 1,500 42.75 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 708 42.75 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 1,501 42.76 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 300 42.78 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 152 42.81 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 972 42.82 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 150 42.82 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 300 42.82 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 96 42.82 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 460 42.85 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 336 42.85 Open Market/Broker

Page 70 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/9/2005 Buy 6 42.85 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 378 42.88 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 168 42.88 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 636 42.90 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 879 42.90 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 450 42.95 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 150 42.98 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 1,667 42.98 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 1,350 43.00 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 6,000 43.05 Open Market/Broker San Francisco Partners, L.P. 8/9/2005 Buy 10,435 43.10 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 4,732 42.47 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 5,566 42.49 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 4,875 42.50 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 4,814 42.52 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 14,109 42.52 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 9,451 42.52 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 17,563 42.55 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 14,499 42.58 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 20,497 42.60 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.67 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 846 42.73 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.76 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.76 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.76 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.77 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.77 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,418 42.77 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,564 42.77 Open Market/Broker

Page 71 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/10/2055 Buy 2,632 42.78 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,914 42.79 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,538 42.79 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,350 42.80 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 1,600 42.80 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,442 42.80 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,726 42.81 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,902 42.82 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,087 42.94 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 27,824 42.98 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 2,445 42.99 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,144 42.99 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 3,853 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 9,494 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 26,696 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 23,500 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 37,294 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,050 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 9,776 43.00 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,144 43.01 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,332 43.01 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 31,960 43.01 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,050 43.01 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 9,588 43.01 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 9,682 43.02 Open Market/Broker SPO Partners II, L.P. 8/10/2055 Buy 7,043 43.02 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 302 42.47 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 355 42.49 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 311 42.50 Open Market/Broker

Page 72 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/10/2005 Buy 307 42.52 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 901 42.52 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 603 42.52 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 1,121 42.55 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 925 42.58 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 1,308 42.60 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.67 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 54 42.73 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.76 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.76 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.76 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.77 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.77 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 154 42.77 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 164 42.77 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 168 42.78 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 186 42.79 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 162 42.79 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 150 42.80 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 102 42.80 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 156 42.80 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 174 42.81 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 185 42.82 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 452 42.94 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 1,776 42.98 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 156 42.99 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 456 42.99 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 246 43.00 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 606 43.00 Open Market/Broker

Page 73 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/10/2005 Buy 1,704 43.00 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 1,500 43.00 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 2,380 43.00 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 450 43.00 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 624 43.00 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 456 43.01 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 468 43.01 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 2,040 43.01 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 450 43.01 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 612 43.01 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 618 43.02 Open Market/Broker San Francisco Partners, L.P. 8/10/2005 Buy 457 43.02 Open Market/Broker SPO Partners II, L.P. 8/11/2005 Buy 3,310 42.79 Open Market/Broker SPO Partners II, L.P. 8/11/2005 Buy 3,245 42.80 Open Market/Broker SPO Partners II, L.P. 8/11/2005 Buy 63,945 42.80 Open Market/Broker San Francisco Partners, L.P. 8/11/2005 Buy 211 42.79 Open Market/Broker San Francisco Partners, L.P. 8/11/2005 Buy 207 42.80 Open Market/Broker San Francisco Partners, L.P. 8/11/2005 Buy 4,082 42.80 Open Market/Broker

Page 74 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/12/2005 Buy 282 42.49 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 282 42.51 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 564 42.55 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 470 42.56 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 282 42.57 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 376 42.58 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 1,974 42.59 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 752 42.59 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 11,844 42.60 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 957 42.61 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 2,134 42.62 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 4,592 42.63 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 2,726 42.64 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 5,922 42.65 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 1,974 42.66 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 136 42.66 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 2,538 42.67 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 2,596 42.68 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 3,740 42.69 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 3,572 42.70 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 940 42.71 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 188 42.72 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 1,034 42.73 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 282 42.74 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 3,611 42.75 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 470 42.76 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 282 42.77 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 282 42.78 Open Market/Broker SPO Partners II, L.P. 8/12/2005 Buy 1,798 42.80 Open Market/Broker

Page 75 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/12/2005 Buy 18 42.49 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 18 42.51 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 36 42.55 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 30 42.56 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 18 42.57 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 24 42.58 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 126 42.59 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 48 42.59 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 756 42.60 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 61 42.61 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 136 42.62 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 293 42.63 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 174 42.64 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 378 42.65 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 126 42.66 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 9 42.66 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 162 42.67 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 166 42.68 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 239 42.69 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 228 42.70 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 60 42.71 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 12 42.72 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 66 42.73 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 18 42.74 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 230 42.75 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 30 42.76 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 18 42.77 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 18 42.78 Open Market/Broker San Francisco Partners, L.P. 8/12/2005 Buy 102 42.80 Open Market/Broker

Page 76 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/15/2005 Buy 103 42.55 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 807 42.56 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 752 42.57 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 2,444 42.58 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 750 42.60 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 7 42.66 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,128 42.67 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,585 42.68 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 3,303 42.69 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 4,700 42.69 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 3,104 42.70 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 3,176 42.72 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 3,956 42.73 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,111 42.74 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 2,568 42.75 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 564 42.76 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,975 42.77 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,226 42.78 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 568 42.79 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 470 42.80 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 470 42.81 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 94 42.87 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 282 42.90 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 94 42.93 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 376 42.94 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 846 43.18 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 564 43.19 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 658 43.20 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 94 43.22 Open Market/Broker

Page 77 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/15/2005 Buy 1,504 43.22 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,128 43.24 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 4,794 43.25 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 6,394 43.26 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 2,162 43.27 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 2,535 43.28 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 3,033 43.29 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 188 43.30 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 8,210 43.30 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 470 43.31 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,034 43.32 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 282 43.33 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 635 43.34 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 1,066 43.35 Open Market/Broker SPO Partners II, L.P. 8/15/2005 Buy 190 43.36 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 7 42.55 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 51 42.56 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 48 42.57 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 156 42.58 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 48 42.60 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 72 42.67 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 101 42.68 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 211 42.69 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 300 42.69 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 198 42.70 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 203 42.72 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 253 42.73 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 71 42.74 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 164 42.75 Open Market/Broker

Page 78 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/15/2005 Buy 36 42.76 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 126 42.77 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 78 42.78 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 36 42.79 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 30 42.80 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 30 42.81 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 6 42.87 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 18 42.90 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 6 42.93 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 24 42.94 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 54 43.18 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 36 43.19 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 42 43.20 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 6 43.22 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 96 43.22 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 72 43.24 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 306 43.25 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 408 43.26 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 138 43.27 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 162 43.28 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 194 43.29 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 12 43.30 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 524 43.30 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 30 43.31 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 66 43.32 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 18 43.33 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 40 43.34 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 68 43.35 Open Market/Broker San Francisco Partners, L.P. 8/15/2005 Buy 55 43.36 Open Market/Broker

Page 79 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/16/2005 Buy 94 43.04 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 94 43.05 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 94 43.06 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 376 43.07 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 376 43.09 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 376 43.11 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 327 43.12 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,286 43.13 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 4,436 43.14 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,069 43.15 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 6,016 43.16 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 940 43.17 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,852 43.18 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,830 43.19 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,197 43.20 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 7,724 43.21 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,938 43.22 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 8,927 43.23 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 3,779 43.24 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 5,701 43.25 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,063 43.26 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 3,299 43.27 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 3,862 43.28 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,110 43.29 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,068 43.30 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 1,638 43.31 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,162 43.32 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 1,786 43.33 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 2,166 43.34 Open Market/Broker

Page 80 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/16/2005 Buy 1,906 43.35 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 4,367 43.36 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 5,567 43.37 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 4,094 43.38 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 4,069 43.39 Open Market/Broker SPO Partners II, L.P. 8/16/2005 Buy 15,311 43.40 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 6 43.04 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 6 43.05 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 6 43.06 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 24 43.07 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 24 43.09 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 24 43.11 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 21 43.12 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 146 43.13 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 283 43.14 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 132 43.15 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 384 43.16 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 60 43.17 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 182 43.18 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 181 43.19 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 140 43.20 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 493 43.21 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 187 43.22 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 570 43.23 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 241 43.24 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 364 43.25 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 132 43.26 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 211 43.27 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 247 43.28 Open Market/Broker

Page 81 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/16/2005 Buy 135 43.29 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 132 43.30 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 105 43.31 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 138 43.32 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 114 43.33 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 138 43.34 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 122 43.35 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 279 43.36 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 355 43.37 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 261 43.38 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 260 43.39 Open Market/Broker San Francisco Partners, L.P. 8/16/2005 Buy 997 43.40 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 376 42.95 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 282 42.97 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,054 42.98 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 5,555 42.99 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 5,468 43.00 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 188 43.01 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,692 43.02 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 3,102 43.03 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 855 43.04 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 4,858 43.05 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 4,067 43.06 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,128 43.07 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 3,419 43.08 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 2,073 43.09 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 752 43.10 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,845 43.11 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 760 43.12 Open Market/Broker

Page 82 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/17/2005 Buy 1,998 43.13 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 2,830 43.14 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 4,229 43.15 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,881 43.16 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 3,948 43.17 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,592 43.18 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 1,506 43.19 Open Market/Broker SPO Partners II, L.P. 8/17/2005 Buy 9,542 43.20 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 24 42.95 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 18 42.97 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 67 42.98 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 355 42.99 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 349 43.00 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 12 43.01 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 108 43.02 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 198 43.03 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 55 43.04 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 310 43.05 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 260 43.06 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 72 43.07 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 218 43.08 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 132 43.09 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 48 43.10 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 118 43.11 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 49 43.12 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 127 43.13 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 181 43.14 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 270 43.15 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 120 43.16 Open Market/Broker

Page 83 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/17/2005 Buy 252 43.17 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 102 43.18 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 96 43.19 Open Market/Broker San Francisco Partners, L.P. 8/17/2005 Buy 559 43.20 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 109 42.01 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,598 42.06 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,786 42.07 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 2,726 42.09 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 470 42.10 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,880 42.11 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 2,162 42.12 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,316 42.13 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 4,700 42.14 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 2,256 42.14 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 191,948 42.15 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 2,068 42.17 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,677 42.18 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 188 42.19 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 2,216 42.20 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 179,959 42.20 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,880 42.21 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,572 42.22 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,034 42.23 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,410 42.24 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,196 42.25 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,880 42.26 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 4,230 42.27 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,008 42.28 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,117 42.29 Open Market/Broker

Page 84 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- SPO Partners II, L.P. 8/18/2005 Buy 7,220 42.30 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 2,444 42.31 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,572 42.32 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,102 42.33 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 4,982 42.34 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 4,700 42.35 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 6,204 42.36 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 940 42.41 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,974 42.45 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 658 42.49 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,692 42.51 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 752 42.53 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,128 42.54 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 216 42.55 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,034 42.57 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,958 42.58 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 3,157 42.59 Open Market/Broker SPO Partners II, L.P. 8/18/2005 Buy 1,881 42.60 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 7 42.01 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 102 42.06 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 114 42.07 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 174 42.09 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 30 42.10 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 120 42.11 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 138 42.12 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 84 42.13 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 300 42.14 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 144 42.14 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 12,252 42.15 Open Market/Broker

Page 85 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/18/2005 Buy 132 42.17 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 107 42.18 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 12 42.19 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 141 42.20 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 11,487 42.20 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 120 42.21 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 228 42.22 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 66 42.23 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 90 42.24 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 204 42.25 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 120 42.26 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 270 42.27 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 192 42.28 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 199 42.29 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 461 42.30 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 156 42.31 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 228 42.32 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 198 42.33 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 318 42.34 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 300 42.35 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 396 42.36 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 60 42.41 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 126 42.45 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 42 42.49 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 108 42.51 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 48 42.53 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 72 42.54 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 14 42.55 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 66 42.57 Open Market/Broker

Page 86 of 87 pages DATE OF PRICE PER WHERE/HOW REPORTING PERSON TRANSACTION TYPE NUMBER OF SHARES SHARE ($) TRANSACTION EFFECTED - --------------------------- ----------- ---- ---------------- --------- -------------------- San Francisco Partners, L.P. 8/18/2005 Buy 253 42.58 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 202 42.59 Open Market/Broker San Francisco Partners, L.P. 8/18/2005 Buy 119 42.60 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 170,000 41.30 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 800 41.31 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 8,400 41.32 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 4,795 41.33 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 1,432 41.34 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 3,700 41.35 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 2,234 41.36 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 9,604 41.37 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 7,300 41.38 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 2,637 41.39 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 75,000 41.40 Open Market/Broker SPO Partners II, L.P. 8/19/2005 Buy 29,098 41.40 Open Market/Broker

Page 87 of 87 pages EXHIBIT INDEX EXHIBIT DOCUMENT DESCRIPTION PAGE NO. - ------- -------------------- -------- A Agreement Pursuant to Rule 13d-1 (k) 1 B Power of Attorney 2

                                    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:  August 22, 2005

                                         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)

                                         (1) A Power of Attorney
                                         authorizing Kim M. Silva to
                                         act on behalf of this
                                         person or entity is filed
                                         as Exhibit B.

EXHIBIT B POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that SPO Partners II, L.P., SPO Advisory Partners, L.P., San Francisco Partners II, L.P., SF Advisory Partners, L.P., SPO Advisory Corp., John H. Scully, William E. Oberndorf and William J. Patterson (each a "Grantor") have made, constituted and appointed, and by these presents do make, constitute and appoint, each of William E. Oberndorf and Kim M. Silva (each an "Attorney"), the true and lawful agent and attorney-in-fact, with full power of substitution and resubstitution, of the Grantor, for and in Grantor's name, place and stead, in any and all capacities, to do all or any of the following acts, matters and things: 1. To sign on behalf of the Grantor statements on Schedule 13D or 13G or Forms 3, 4 and 5, or amendments thereto pursuant to Section 13(d) or Section 16 under the Securities Exchange Act of 1934. 2. To do all such other acts and things as, in such Attorney's discretion, he or she deems appropriate or desirable for the purpose of filing such statements on Schedule 13D or 13G or Forms 3, 4 and 5, or amendments thereto. 3. To appoint in writing one or more substitutes who shall have the power to act on behalf of the Grantor as if that substitute or those substitutes shall have been originally appointed Attorney (s) by this Power of Attorney and/or to revoke any such appointment at any time without assigning any reason therefor. The Grantor hereby ratifies and confirms all that said agents and attorneys-in-fact or any substitute or substitutes may lawfully do or cause to be done by virtue hereof. This power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 or to file reports under Section 13(d) of the Securities Exchange Act of 1934 with respect to the undersigned's holdings of and transactions in securities issued by Lamar Advertising Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact. The words Grantor and Attorney shall include all grantors and attorneys under this Power of Attorney. [Signatures on the Following Pages.]

IN WITNESS WHEREOF, each Grantor duly assents to this Power of Attorney by his, her or its signature as of the 22nd day of August, 2005. SPO PARTNERS II, L.P. By: SPO Advisory Partners, L.P. Its: General Partner By: SPO Advisory Corp. Its: General Partner By: /s/ William E. Oberndorf ---------------------------- Name: William E. Oberndorf Title: Vice President SPO ADVISORY PARTNERS, L.P. By: SPO Advisory Corp. Its: General Partner By: /s/ William E. Oberndorf ---------------------------- Name: William E. Oberndorf Title: Vice President SAN FRANCISCO PARTNERS II, L.P. By: SF Advisory Partners, L.P. Its: General Partner By: SPO Advisory Corp. Its. General Partner By: /s/ William E. Oberndorf ---------------------------- Name: William E. Oberndorf Title: Vice President

SF ADVISORY PARTNERS, L.P. By: SPO Advisory Corp. Its: General Partner By: /s/ William E. Oberndorf ---------------------------- Name: William E. Oberndorf Title: Vice President SPO ADVISORY CORP. By: /s/ William E. Oberndorf ---------------------------- Name: William E. Oberndorf Title: Vice President JOHN H. SCULLY /s/ John H. Scully ------------------ WILLIAM E. OBERNDORF /s/ William E. Oberndorf ---------------------------- WILLIAM J. PATTERSON /s/ William J. Patterson ------------------------