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<SEC-DOCUMENT>0000891836-05-000374.txt : 20050829
<SEC-HEADER>0000891836-05-000374.hdr.sgml : 20050829
<ACCEPTANCE-DATETIME>20050829170002
ACCESSION NUMBER:		0000891836-05-000374
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20050829
DATE AS OF CHANGE:		20050829
GROUP MEMBERS:		JOHN H. SCULLY
GROUP MEMBERS:		SAN FRANCISCO PARTNERS II, L.P.
GROUP MEMBERS:		SF ADVISORY PARTNERS, L.P.
GROUP MEMBERS:		SPO ADVISORY CORP.
GROUP MEMBERS:		SPO ADVISORY PARTNERS, L.P.
GROUP MEMBERS:		WILLIAM E. OBERNDORF
GROUP MEMBERS:		WILLIAM J. PATTERSON

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CABOT CORP
		CENTRAL INDEX KEY:			0000016040
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS CHEMICAL PRODUCTS [2890]
		IRS NUMBER:				042271897
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-30636
		FILM NUMBER:		051056130

	BUSINESS ADDRESS:	
		STREET 1:		TWO SEAPORT LANE SUITE 1300
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109-1806
		BUSINESS PHONE:		6173450100

	MAIL ADDRESS:	
		STREET 1:		TWO SEAPORT LANE SUITE 1300
		CITY:			BOSTON
		STATE:			MA
		ZIP:			82109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CABOT GODFREY L INC
		DATE OF NAME CHANGE:	19680418

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SPO PARTNERS II LP
		CENTRAL INDEX KEY:			0001046206
		IRS NUMBER:				752377615
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		4153836600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY, 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAIN STREET PARTNERS LP
		DATE OF NAME CHANGE:	19970916
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>sc0191.txt
<DESCRIPTION>SCHEDULE 13D--CABOT CORP
<TEXT>
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. )*

                                CABOT CORPORATION
                                (Name of Issuer)

                     COMMON STOCK, PAR VALUE $1.00 PER SHARE
                         (Title of Class of Securities)

                                    127055101
                                 (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 18, 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>
                                                              Page 2 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         SPO Partners II, L.P.
- --------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     |_|
                                                                     (b)     |X|
- --------------------------------------------------------------------------------
3.       SEC Use Only
- --------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         WC
- --------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) |_|
- --------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware
- --------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 3,804,400 (1)
                          ------------------------------------------------------
Number Of Shares          8.     SHARED VOTING POWER
Beneficially Owned By            -0-
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 3,804,400 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         3,804,400 (1)
- --------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES |_|
- --------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         6.1%
- --------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         PN
- --------------------------------------------------------------------------------

(1) Power is exercised through its sole general partner, SPO Advisory Partners,
    L.P.

<PAGE>
                                                              Page 3 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         SPO Advisory Partners, L.P.
- --------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     |_|
                                                                     (b)     |X|
- --------------------------------------------------------------------------------
3.       SEC Use Only
- --------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         Not Applicable
- --------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) |_|
- --------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware
- --------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 3,804,400 (1)(2)
                          ------------------------------------------------------
Number Of Shares          8.     SHARED VOTING POWER
Beneficially Owned By            -0-
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 3,804,400 (1)(2)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         3,804,400 (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)
         6.1%
- --------------------------------------------------------------------------------
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.

<PAGE>
                                                              Page 4 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
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
                                 242,900 (1)
                          ------------------------------------------------------
Number Of Shares          8.     SHARED VOTING POWER
Beneficially Owned By            -0-
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 242,900 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         242,900 (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.

<PAGE>
                                                              Page 5 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
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
                                 242,900 (1)(2)
                          ------------------------------------------------------
Number Of Shares          8.     SHARED VOTING POWER
Beneficially Owned By            -0-
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 242,900 (1)(2)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         242,900 (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.

<PAGE>
                                                              Page 6 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
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
                                 4,047,300 (1)(2)
                          ------------------------------------------------------
Number Of Shares          8.     SHARED VOTING POWER
Beneficially Owned By            -0-
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 4,047,300 (1)(2)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         4,047,300 (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)
         6.5%
- --------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         CO
- --------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of SPO Advisory
    Partners, L.P. with respect to 3,804,400 of such shares; and
    solely in its capacity as the sole general partner of SF Advisory
    Partners, L.P. with respect to 242,900 of such shares.

(2) Power is exercised through its three controlling persons, John H. Scully,
    William E. Oberndorf and William J. Patterson.

<PAGE>
                                                              Page 7 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         John H. 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            4,047,300 (1)
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 -0-
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 4,047,300 (1)
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         4,047,300 (1)
- --------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES |_|
- --------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         6.5%
- --------------------------------------------------------------------------------
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.

<PAGE>
                                                              Page 8 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
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            4,047,300 (1)
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 -0-
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 4,047,300 (1)
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         4,047,300 (1)
- --------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES |_|
- --------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         6.5%
- --------------------------------------------------------------------------------
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.

<PAGE>
                                                              Page 9 of 56 pages
CUSIP No. 127055101

- --------------------------------------------------------------------------------
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            4,047,300 (1)
Each Reporting Person     ------------------------------------------------------
With                      9.     SOLE DISPOSITIVE POWER
                                 -0-
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 4,047,300 (1)
- --------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         4,047,300 (1)
- --------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES |_|
- --------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         6.5%
- --------------------------------------------------------------------------------
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>
                                                             Page 10 of 56 pages
ITEM 1.   SECURITY AND ISSUER.

         This statement relates to the shares of Common Stock, par value $1.00
per share ("Shares"), of Cabot Corporation, a Delaware corporation (the
"Issuer"). The principal executive offices of the Issuer are located at Two
Seaport Lane, Boston, Massachusetts 02210.

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>
                                                             Page 11 of 56 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>
                                                             Page 12 of 56 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          $123,143,758
SPO Advisory Partners       Not Applicable                     Not Applicable
SFP                         Contributions from Partners            $7,862,356
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>

                                                             Page 13 of 56 pages

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

         (a) Percentage interest calculations for each Reporting Person are
based upon the Issuer having 62,030,447 total outstanding shares of Common Stock
as reported on the Issuer's 10-Q filed with the Securities and Exchange
Commission on August 9, 2005.

         SPO

         The aggregate number of Shares that SPO owns beneficially, pursuant to
Rule 13d-3 of the Act, is 3,804,400 Shares, which constitutes approximately
6.1% of the outstanding Shares.

         SPO Advisory Partners

         Because of its position as the sole general partner of SPO, SPO
Advisory Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 3,804,400 Shares, which constitutes approximately 6.1%
of the outstanding Shares.

         SFP

         The aggregate number of Shares that SFP owns beneficially, pursuant to
Rule 13d-3 of the Act, is 242,900 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 242,900 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 4,047,300
Shares in the aggregate, which constitutes approximately 6.5% 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
4,047,300 Shares, which constitutes approximately 6.5% 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
4,047,300 Shares, which constitutes approximately 6.5% of the outstanding
Shares.

<PAGE>
                                                             Page 14 of 56 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
4,047,300 Shares, which constitutes approximately 6.5% of the outstanding
Shares.

         To the best of the knowledge of each of the Reporting Persons, other
than as set forth above, none of the persons named in Item 2 hereof is the
beneficial owner of any Shares.

         (b) SPO

         Acting through its sole general partner, SPO has the sole power to vote
or to direct the vote and to dispose or to direct the disposition of 3,804,400
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 3,804,400
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 242,900
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 242,900 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 4,047,300 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 4,047,300 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 4,047,300 Shares held by
SPO and SFP in the aggregate.

<PAGE>
                                                             Page 15 of 56 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 4,047,300 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 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>
                                                             Page 16 of 56 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 29, 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>
                                                             Page 17 of 56 pages
<TABLE>
<CAPTION>
                                                             SCHEDULE I TO
                                                SCHEDULE 13D FOR SPO PARTNERS II, L.P.

                                                                                                   Pages 17 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>         <C>
SPO Partners II, L.P.              6/27/2005          Buy                 4,700         31.35       Open Market/Broker

San Francisco Partners, L.P.       6/27/2005          Buy                   300         31.35       Open Market/Broker

SPO Partners II, L.P.              6/28/2005          Buy                24,100         32.09       Open Market/Broker

San Francisco Partners, L.P.       6/28/2005          Buy                 1,600         32.09       Open Market/Broker

SPO Partners II, L.P.              6/29/2005          Buy                77,000         33.19       Open Market/Broker

San Francisco Partners, L.P.       6/29/2005          Buy                 4,900         33.19       Open Market/Broker

SPO Partners II, L.P.              6/30/2005          Buy                81,800         33.08       Open Market/Broker

San Francisco Partners, L.P.       6/30/2005          Buy                 5,200         33.08       Open Market/Broker

SPO Partners II, L.P.              7/1/2005           Buy                48,400         33.01       Open Market/Broker

San Francisco Partners, L.P.       7/1/2005           Buy                 3,100         33.01       Open Market/Broker

SPO Partners II, L.P.              7/5/2005           Buy               141,000         33.02       Open Market/Broker

San Francisco Partners, L.P.       7/5/2005           Buy                 9,000         33.02       Open Market/Broker

SPO Partners II, L.P.              7/6/2005           Buy                84,600         33.04       Open Market/Broker

San Francisco Partners, L.P.       7/6/2005           Buy                 5,400         33.04       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                 4,700         32.99       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                58,562         33.00       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                 4,512         33.01       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                 2,914         33.02       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                 4,512         33.03       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                   564         33.04       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                 4,230         33.05       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                    94         33.06       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                   846         33.07       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                   376         33.08       Open Market/Broker

SPO Partners II, L.P.              7/7/2005           Buy                84,882         33.09       Open Market/Broker
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                                                                                   Pages 18 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              7/7/2005           Buy                   608         33.10    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                   300         32.99    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                 3,738         33.00    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                   288         33.01    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                   186         33.02    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                   288         33.03    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                    36         33.04    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                   270         33.05    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                     6         33.06    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                    54         33.07    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                    24         33.08    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                 5,418         33.09    Open Market/Broker

San Francisco Partners, L.P.       7/7/2005           Buy                    92         33.10    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                27,636         33.00    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                   470         33.02    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                 1,504         33.03    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                 4,794         33.04    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                42,018         33.05    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                 1,128         33.06    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                    94         33.07    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                   564         33.08    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                 1,222         33.09    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                 1,128         33.10    Open Market/Broker

SPO Partners II, L.P.              7/8/2005           Buy                37,642         33.25    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                 1,764         33.00    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                    30         33.02    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                    96         33.03    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 19 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       7/8/2005           Buy                   306         33.04    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                 2,682         33.05    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                    72         33.06    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                     6         33.07    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                    36         33.08    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                    78         33.09    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                    72         33.10    Open Market/Broker

San Francisco Partners, L.P.       7/8/2005           Buy                 2,358         33.25    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                   188         34.15    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                   282         34.34    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                    94         34.35    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                    94         34.37    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                 3,196         34.38    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                   658         34.39    Open Market/Broker

SPO Partners II, L.P.              7/14/2005          Buy                10,688         34.40    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                    12         34.15    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                    18         34.34    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                     6         34.35    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                     6         34.37    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                   204         34.38    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                    42         34.39    Open Market/Broker

San Francisco Partners, L.P.       7/14/2005          Buy                   712         34.40    Open Market/Broker

SPO Partners II, L.P.              7/18/2005          Buy                   752         34.25    Open Market/Broker

SPO Partners II, L.P.              7/18/2005          Buy                    94         34.49    Open Market/Broker

SPO Partners II, L.P.              7/18/2005          Buy               103,354         34.50    Open Market/Broker

San Francisco Partners, L.P.       7/18/2005          Buy                    48         34.25    Open Market/Broker

San Francisco Partners, L.P.       7/18/2005          Buy                     6         34.49    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 20 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       7/18/2005          Buy                 6,546         34.50    Open Market/Broker

SPO Partners II, L.P.              7/19/2005          Buy                47,000         34.50    Open Market/Broker

San Francisco Partners, L.P.       7/19/2005          Buy                 3,000         34.50    Open Market/Broker

SPO Partners II, L.P.              7/28/2005          Buy                   282         34.15    Open Market/Broker

SPO Partners II, L.P.              7/28/2005          Buy                   618         34.16    Open Market/Broker

San Francisco Partners, L.P.       7/28/2005          Buy                    18         34.15    Open Market/Broker

San Francisco Partners, L.P.       7/28/2005          Buy                    82         34.16    Open Market/Broker

SPO Partners II, L.P.              7/29/2005          Buy                85,200         34.50    Open Market/Broker

San Francisco Partners, L.P.       7/29/2005          Buy                 5,400         34.50    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   188         34.05    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,504         34.06    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,222         34.07    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   752         34.08    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   846         34.09    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   188         34.10    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,128         34.11    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,128         34.12    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   752         34.13    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   658         34.14    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,410         34.15    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,598         34.16    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,410         34.17    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   940         34.18    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 2,256         34.19    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,692         34.20    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,316         34.21    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,034         34.22    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 21 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/2/2005           Buy                   282         34.23    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   564         34.24    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                 1,316         34.25    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                    94         34.26    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                    94         34.27    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                    94         34.28    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   282         34.29    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                   964         34.30    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                    94         34.31    Open Market/Broker

SPO Partners II, L.P.              8/2/2005           Buy                    94         34.33    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    12         34.05    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    96         34.06    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    78         34.07    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    48         34.08    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    54         34.09    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    12         34.10    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    72         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    72         34.12    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    48         34.13    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    42         34.14    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    90         34.15    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                   102         34.16    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    90         34.17    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    60         34.18    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                   144         34.19    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                   108         34.20    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    84         34.21    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 22 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/2/2005           Buy                    66         34.22    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    18         34.23    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    36         34.24    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    84         34.25    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                     6         34.26    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                     6         34.27    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                     6         34.28    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    18         34.29    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                    36         34.30    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                     6         34.31    Open Market/Broker

San Francisco Partners, L.P.       8/2/2005           Buy                     6         34.33    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                    94         34.14    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                   282         34.15    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                   564         34.16    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                 1,880         34.17    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                 2,256         34.18    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                 3,008         34.19    Open Market/Broker

SPO Partners II, L.P.              8/3/2005           Buy                 5,916         34.20    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                     6         34.14    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                    18         34.15    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                    36         34.16    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                   120         34.17    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                   144         34.18    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                   192         34.19    Open Market/Broker

San Francisco Partners, L.P.       8/3/2005           Buy                   384         34.20    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   282         33.84    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   564         33.85    Open Market/Broker

</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 23 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/4/2005           Buy                 1,316         33.86    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   282         33.87    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                 2,068         33.88    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                 2,538         33.89    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                 2,726         33.90    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   564         33.91    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   564         33.92    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   470         33.93    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   940         33.94    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   846         33.95    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   376         33.96    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   658         33.97    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   658         33.98    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                    94         33.99    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   282         34.00    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                 1,504         34.01    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                 1,692         34.02    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   470         34.03    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   658         34.04    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   658         34.05    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   188         34.06    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                    94         34.07    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   674         34.08    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   188         34.09    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   188         34.10    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                    94         34.11    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                   188         34.12    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 24 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/4/2005           Buy                    94         34.13    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                    94         34.15    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                    94         34.18    Open Market/Broker

SPO Partners II, L.P.              8/4/2005           Buy                    94         34.19    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    18         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    36         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    84         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    18         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                   132         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                   162         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                   174         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    36         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    36         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    30         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    60         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    54         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    24         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    42         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    42         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                     6         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    18         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    96         34.01    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                   108         34.02    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    30         34.03    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    42         34.04    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    42         34.05    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    12         34.06    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 25 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/4/2005           Buy                     6         34.07    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    26         34.08    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    12         34.09    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    12         34.10    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                     6         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                    12         34.12    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                     6         34.13    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                     6         34.15    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                     6         34.18    Open Market/Broker

San Francisco Partners, L.P.       8/4/2005           Buy                     6         34.19    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   940         33.82    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                    94         33.83    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   564         33.85    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   940         33.86    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                 1,410         33.87    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                 1,128         33.88    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   470         33.89    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                 1,034         33.90    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                 1,034         33.91    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                 3,102         33.92    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   846         33.93    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   940         33.94    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   752         33.95    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   658         33.96    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   846         33.97    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                 1,410         33.98    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   940         33.99    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 26 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/5/2005           Buy                   376         34.00    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                   282         34.01    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                    94         34.02    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                    94         34.09    Open Market/Broker

SPO Partners II, L.P.              8/5/2005           Buy                    46         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    60         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                     6         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    36         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    60         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    90         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    72         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    30         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    66         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    66         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                   198         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    54         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    60         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    48         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    42         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    54         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    90         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    60         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    24         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    18         34.01    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                     6         34.02    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                     6         34.09    Open Market/Broker

San Francisco Partners, L.P.       8/5/2005           Buy                    54         34.11    Open Market/Broker

</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 27 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/8/2005           Buy                 1,222         33.80    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,692         33.81    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   846         33.82    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 3,102         33.83    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,692         33.84    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   752         33.85    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,410         33.86    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,316         33.87    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,222         33.88    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   940         33.89    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 5,734         33.90    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,692         33.91    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 2,068         33.92    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   658         33.93    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   376         33.94    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   752         33.95    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   752         33.96    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                   564         33.97    Open Market/Broker

SPO Partners II, L.P.              8/8/2005           Buy                 1,210         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    78         33.80    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                   108         33.81    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    54         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                   198         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                   108         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    48         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    90         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    84         33.87    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 28 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/8/2005           Buy                    78         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    60         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                   366         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                   108         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                   132         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    42         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    24         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    48         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    48         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    36         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/8/2005           Buy                    90         33.98    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                    94         33.82    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   188         33.83    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   188         33.84    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   564         33.85    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                 1,034         33.86    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   376         33.87    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   188         33.88    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   658         33.89    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   658         33.90    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   376         33.91    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   940         33.92    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   846         33.93    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   470         33.94    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   564         33.95    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   846         33.96    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                   564         33.97    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 29 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/9/2005           Buy                   752         33.98    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                 1,692         33.99    Open Market/Broker

SPO Partners II, L.P.              8/9/2005           Buy                 8,802         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                     6         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    12         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    12         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    36         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    66         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    24         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    12         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    42         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    42         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    24         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    60         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    54         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    30         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    36         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    54         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    36         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                    48         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                   108         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/9/2005           Buy                   598         34.00    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.81    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.82    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.83    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.84    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 1,222         33.85    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 30 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/10/2005          Buy                    94         33.86    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.87    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.88    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   470         33.89    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                    94         33.90    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   470         33.91    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   376         33.92    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   658         33.93    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 1,410         33.94    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   658         33.95    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   282         33.96    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 1,222         33.97    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 1,034         33.98    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   376         33.99    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 4,042         34.00    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   752         34.01    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 1,880         34.02    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 1,786         34.03    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 2,538         34.04    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 2,538         34.05    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 2,068         34.06    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 2,162         34.07    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 3,854         34.08    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 4,324         34.09    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                 4,324         34.10    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   376         34.11    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   282         34.12    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 31 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/10/2005          Buy                   470         34.13    Open Market/Broker

SPO Partners II, L.P.              8/10/2005          Buy                   174         34.14    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.81    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    78         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    30         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                     6         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    30         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    24         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    42         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    90         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    42         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    18         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    78         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    66         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    24         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   258         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    48         34.01    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   120         34.02    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   114         34.03    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   162         34.04    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   162         34.05    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 32 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/10/2005          Buy                   132         34.06    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   138         34.07    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   246         34.08    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   276         34.09    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                   276         34.10    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    24         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    18         34.12    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    30         34.13    Open Market/Broker

San Francisco Partners, L.P.       8/10/2005          Buy                    26         34.14    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   564         33.93    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                    94         33.98    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                    94         34.06    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   188         34.07    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   940         34.08    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   188         34.09    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,034         34.10    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   564         34.11    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   940         34.12    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   658         34.13    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   376         34.14    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   658         34.15    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   188         34.16    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,034         34.17    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,034         34.18    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   752         34.19    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   752         34.20    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,692         34.21    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 33 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/11/2005          Buy                 1,504         34.22    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,504         34.23    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   940         34.24    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   564         34.25    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   188         34.26    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   282         34.27    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,410         34.28    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,504         34.29    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,128         34.30    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   188         34.31    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   658         34.32    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,222         34.33    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,222         34.34    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,128         34.36    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   564         34.37    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,034         34.38    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   376         34.39    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                13,348         34.40    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   470         34.41    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   564         34.42    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   658         34.43    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 2,820         34.45    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                   282         34.46    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 3,854         34.47    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 1,222         34.48    Open Market/Broker

SPO Partners II, L.P.              8/11/2005          Buy                 2,016         34.49    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    36         33.93    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 34 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/11/2005          Buy                     6         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                     6         34.06    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    12         34.07    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    60         34.08    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    12         34.09    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    66         34.10    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    36         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    60         34.12    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    42         34.13    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    24         34.14    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    42         34.15    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    12         34.16    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    66         34.17    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    66         34.18    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    48         34.19    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    48         34.20    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                   108         34.21    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    96         34.22    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    96         34.23    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    60         34.24    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    36         34.25    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    12         34.26    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    18         34.27    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    90         34.28    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    96         34.29    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    72         34.30    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    12         34.31    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 35 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/11/2005          Buy                    42         34.32    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    78         34.33    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    78         34.34    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    72         34.36    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    36         34.37    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    66         34.38    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    24         34.39    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                   852         34.40    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    30         34.41    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    36         34.42    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    42         34.43    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                   180         34.45    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    18         34.46    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                   246         34.47    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    78         34.48    Open Market/Broker

San Francisco Partners, L.P.       8/11/2005          Buy                    84         34.49    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                    94         33.80    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,222         33.82    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   470         33.83    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   752         33.84    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   470         33.85    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   564         33.86    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   846         33.87    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   846         33.88    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   282         33.89    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   470         33.90    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                    94         33.91    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 36 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/12/2005          Buy                 1,222         33.92    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,222         33.93    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,034         33.94    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,316         33.95    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,410         33.96    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,316         33.97    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 3,572         33.98    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 2,914         33.99    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 2,444         34.00    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   846         34.01    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   846         34.02    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   376         34.03    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,222         34.05    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,598         34.06    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   188         34.07    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                 1,974         34.08    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   188         34.10    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                    94         34.11    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                    94         34.12    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   282         34.14    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                    94         34.15    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                    94         34.16    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   282         34.17    Open Market/Broker

SPO Partners II, L.P.              8/12/2005          Buy                   662         34.20    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                     6         33.80    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    78         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    30         33.83    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 37 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/12/2005          Buy                    48         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    30         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    36         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    54         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    54         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    18         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    30         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                     6         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    78         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    78         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    66         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    84         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    90         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    84         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                   228         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                   186         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                   156         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    54         34.01    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    54         34.02    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    24         34.03    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    78         34.05    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                   102         34.06    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    12         34.07    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                   126         34.08    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    12         34.10    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                     6         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                     6         34.12    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 38 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/12/2005          Buy                    18         34.14    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                     6         34.15    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                     6         34.16    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    18         34.17    Open Market/Broker

San Francisco Partners, L.P.       8/12/2005          Buy                    38         34.20    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   282         33.76    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   282         33.77    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   188         33.78    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                    94         33.80    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   940         33.81    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,410         33.82    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   470         33.83    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,034         33.84    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 2,538         33.85    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   188         33.86    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,034         33.87    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,410         33.88    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,316         33.89    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,692         33.90    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,222         33.91    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,128         33.92    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   658         33.93    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   188         33.94    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   376         33.95    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   470         33.96    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                   752         33.97    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,128         33.98    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 39 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/15/2005          Buy                   846         33.99    Open Market/Broker

SPO Partners II, L.P.              8/15/2005          Buy                 1,854         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    18         33.76    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    18         33.77    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    12         33.78    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                     6         33.80    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    60         33.81    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    90         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    30         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    66         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                   162         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    12         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    66         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    90         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    84         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                   108         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    78         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    72         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    42         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    12         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    24         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    30         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    48         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    72         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                    54         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/15/2005          Buy                   146         34.00    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.29    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 40 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/16/2005          Buy                   846         33.30    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   282         33.31    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,128         33.32    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 9,870         33.33    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.34    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   940         33.35    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.36    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.37    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.44    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.45    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   376         33.46    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   846         33.50    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                11,750         33.51    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 2,632         33.52    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 4,700         33.53    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 6,674         33.54    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 4,230         33.55    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   752         33.56    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   188         33.57    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.59    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   658         33.60    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.61    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.62    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   470         33.63    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,222         33.64    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,034         33.65    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   940         33.66    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 41 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/16/2005          Buy                   376         33.67    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,410         33.68    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.69    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   940         33.70    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   846         33.71    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.73    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.75    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 4,982         33.76    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 2,162         33.77    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   282         33.78    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,222         33.79    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   188         33.80    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 3,196         33.81    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 2,444         33.82    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   470         33.83    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   282         33.84    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.85    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.86    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   376         33.87    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   564         33.88    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,410         33.89    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                 1,034         33.90    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   470         33.91    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   940         33.92    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.94    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                   874         33.95    Open Market/Broker

SPO Partners II, L.P.              8/16/2005          Buy                    94         33.96    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 42 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.29    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    54         33.30    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    18         33.31    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    72         33.32    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   630         33.33    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.34    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    60         33.35    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.36    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.37    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.44    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.45    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    24         33.46    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    54         33.50    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   750         33.51    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   168         33.52    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   300         33.53    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   426         33.54    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   270         33.55    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    48         33.56    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    12         33.57    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.59    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    42         33.60    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.61    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.62    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    30         33.63    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    78         33.64    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    66         33.65    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 43 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/16/2005          Buy                    60         33.66    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    24         33.67    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    90         33.68    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.69    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    60         33.70    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    54         33.71    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.73    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.75    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   318         33.76    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   138         33.77    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    18         33.78    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    78         33.79    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    12         33.80    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   204         33.81    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                   156         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    30         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    18         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    24         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    36         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    90         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    66         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    30         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    60         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/16/2005          Buy                    26         33.95    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 44 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/16/2005          Buy                     6         33.96    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   470         33.29    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                    94         33.30    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   282         33.60    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 1,128         33.61    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         33.68    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         33.69    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                    94         33.79    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         33.80    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 1,034         33.82    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   470         33.83    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                    94         33.84    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 1,034         33.85    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 2,068         33.86    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 1,504         33.87    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   658         33.88    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   282         33.89    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   470         33.90    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   376         33.91    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 2,820         33.92    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   940         33.93    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   752         33.94    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         33.95    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   940         33.96    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 1,222         33.97    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   846         33.98    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                 2,068         33.99    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 45 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/17/2005          Buy                 5,452         34.00    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.01    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.05    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.10    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.11    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   376         34.15    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   376         34.16    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.18    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   282         34.19    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   564         34.20    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   564         34.25    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   658         34.27    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   376         34.28    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   470         34.29    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   564         34.33    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   470         34.34    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.35    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   282         34.36    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   188         34.37    Open Market/Broker

SPO Partners II, L.P.              8/17/2005          Buy                   152         34.38    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    30         33.29    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                     6         33.30    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    18         33.60    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    72         33.61    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         33.68    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         33.69    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                     6         33.79    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 46 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/17/2005          Buy                    12         33.80    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    66         33.82    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    30         33.83    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                     6         33.84    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    66         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                   132         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    96         33.87    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    42         33.88    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    18         33.89    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    30         33.90    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    24         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                   180         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    60         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    48         33.94    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         33.95    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    60         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    78         33.97    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    54         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                   132         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                   348         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.01    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.05    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.10    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.11    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    24         34.15    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    24         34.16    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.18    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 47 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/17/2005          Buy                    18         34.19    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    36         34.20    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    36         34.25    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    42         34.27    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    24         34.28    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    30         34.29    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    36         34.33    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    30         34.34    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.35    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    18         34.36    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    12         34.37    Open Market/Broker

San Francisco Partners, L.P.       8/17/2005          Buy                    48         34.38    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy               470,752         33.77    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   470         33.79    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                23,500         33.83    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                    94         33.85    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   470         33.86    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   658         33.91    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   752         33.92    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   940         33.93    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   752         33.96    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   564         33.98    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                   564         33.99    Open Market/Broker

SPO Partners II, L.P.              8/18/2005          Buy                 6,984         34.00    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                30,048         33.77    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    30         33.79    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                 1,500         33.83    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 48 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/18/2005          Buy                     6         33.85    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    30         33.86    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    42         33.91    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    48         33.92    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    60         33.93    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    48         33.96    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    36         33.98    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                    36         33.99    Open Market/Broker

San Francisco Partners, L.P.       8/18/2005          Buy                   416         34.00    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   188         33.37    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                    94         33.42    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   282         33.45    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                    94         33.48    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 1,504         33.49    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 6,580         33.50    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 4,324         33.51    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 6,110         33.52    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 3,666         33.53    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 2,350         33.54    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 3,102         33.55    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   376         33.56    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 1,128         33.57    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 1,504         33.58    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   752         33.59    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 2,162         33.60    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   564         33.61    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 1,974         33.62    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 49 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/19/2005          Buy                 1,598         33.63    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                    94         33.64    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                 2,444         33.65    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   188         33.66    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   752         33.68    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   376         33.69    Open Market/Broker

SPO Partners II, L.P.              8/19/2005          Buy                   294         33.70    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    12         33.37    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                     6         33.42    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    18         33.45    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                     6         33.48    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    96         33.49    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   420         33.50    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   276         33.51    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   390         33.52    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   234         33.53    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   150         33.54    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   198         33.55    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    24         33.56    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    72         33.57    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    96         33.58    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    48         33.59    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   138         33.60    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    36         33.61    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   126         33.62    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                   102         33.63    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                     6         33.64    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 50 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
San Francisco Partners, L.P.       8/19/2005          Buy                   156         33.65    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    12         33.66    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    48         33.68    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                    24         33.69    Open Market/Broker

San Francisco Partners, L.P.       8/19/2005          Buy                     6         33.70    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                    94         33.44    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   470         33.45    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   188         33.46    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   658         33.47    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                 1,128         33.48    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   846         33.49    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy               441,270         33.50    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   564         33.51    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   752         33.52    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   658         33.53    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                    94         33.54    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   376         33.55    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                    94         33.56    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   188         33.57    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   940         33.59    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   282         33.60    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   564         33.61    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   376         33.62    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   282         33.67    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                    94         33.68    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                 4,136         33.69    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                    94         33.70    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 51 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>                <C>            <C>      <C>
SPO Partners II, L.P.              8/22/2005          Buy                   470         33.71    Open Market/Broker

SPO Partners II, L.P.              8/22/2005          Buy                   282         33.72    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                     6         33.44    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    30         33.45    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    12         33.46    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    42         33.47    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    72         33.48    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    54         33.49    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                28,130         33.50    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    36         33.51    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    48         33.52    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    42         33.53    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                     6         33.54    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    24         33.55    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                     6         33.56    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    12         33.57    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    60         33.59    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    18         33.60    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    36         33.61    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    24         33.62    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    18         33.67    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                     6         33.68    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                   264         33.69    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                     6         33.70    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    30         33.71    Open Market/Broker

San Francisco Partners, L.P.       8/22/2005          Buy                    18         33.72    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 52 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>               <C>            <C>      <C>
SPO Partners II, L.P.              8/24/2005          Buy                 1,034        33.09    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy               217,798        33.10    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                23,970        33.12    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                   752        33.13    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                   752        33.14    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                 1,128        33.15    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                   470        33.24    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                   752        33.28    Open Market/Broker

SPO Partners II, L.P.              8/24/2005          Buy                21,644        33.30    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                    66        33.09    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                13,902        33.10    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                 1,530        33.12    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                    48        33.13    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                    48        33.14    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                    72        33.15    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                    30        33.24    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                    48        33.28    Open Market/Broker

San Francisco Partners, L.P.       8/24/2005          Buy                 1,356        33.30    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                19,082        33.07    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                    94        33.08    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   282        33.12    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   188        33.15    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   658        33.17    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   188        33.19    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   846        33.20    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   282        33.21    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                 4,042        33.22    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 53 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>               <C>            <C>      <C>
SPO Partners II, L.P.              8/25/2005          Buy                   470        33.25    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   470        33.28    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                   752        33.29    Open Market/Broker

SPO Partners II, L.P.              8/25/2005          Buy                29,846        33.30    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                 1,218        33.07    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                     6        33.08    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    18        33.12    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    12        33.15    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    42        33.17    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    12        33.19    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    54        33.20    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    18        33.21    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                   258        33.22    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    30        33.25    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    30        33.28    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                    48        33.29    Open Market/Broker

San Francisco Partners, L.P.       8/25/2005          Buy                 1,954        33.30    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                    94        33.13    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   564        33.14    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                    94        33.16    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   658        33.21    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   752        33.26    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,034        33.30    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,504        33.32    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                    94        33.33    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,410        33.34    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   470        33.35    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 54 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>               <C>            <C>      <C>
SPO Partners II, L.P.              8/26/2005          Buy                   658        33.36    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,034        33.37    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,128        33.38    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,316        33.39    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                15,886        33.40    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   282        33.41    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,128        33.42    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   282        33.43    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,316        33.45    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 2,632        33.46    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,034        33.47    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 1,974        33.48    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                   376        33.49    Open Market/Broker

SPO Partners II, L.P.              8/26/2005          Buy                 7,480        33.50    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                     6        33.13    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    36        33.14    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                     6        33.16    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    42        33.21    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    48        33.26    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    66        33.30    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    96        33.32    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                     6        33.33    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    90        33.34    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    30        33.35    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    42        33.36    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    66        33.37    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    72        33.38    Open Market/Broker
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                   Pages 55 of 56 pages

                                     DATE OF                                         PRICE PER   WHERE/HOW TRANSACTION
        REPORTING PERSON          TRANSACTION         TYPE      NUMBER OF SHARES     SHARE ($)       EFFECTED
- ----------------------------      ----------          ----      ----------------     ---------   ----------------------
<S>                                <C>                <C>               <C>            <C>      <C>
San Francisco Partners, L.P.       8/26/2005          Buy                    84        33.39    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                 1,014        33.40    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    18        33.41    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    72        33.42    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    18        33.43    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    84        33.45    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                   168        33.46    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    66        33.47    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                   126        33.48    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                    24        33.49    Open Market/Broker

San Francisco Partners, L.P.       8/26/2005          Buy                   520        33.50    Open Market/Broker
</TABLE>

<PAGE>

                                                             Page 56 of 56 pages

                                  EXHIBIT INDEX

EXHIBIT     DOCUMENT DESCRIPTION                      PAGE NO.
- -------     ------------------------------------      --------
A           Agreement Pursuant to Rule 13d-1 (k)      1
B           Power of Attorney                         2
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.A
<SEQUENCE>2
<FILENAME>ex-a.txt
<DESCRIPTION>EXHIBIT A--AGREEMENT
<TEXT>
                                    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 29, 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.

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.B
<SEQUENCE>3
<FILENAME>ex-b.txt
<DESCRIPTION>EXHIBIT B--POWER OF ATTORNEY
<TEXT>
                                    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 Cabot
Corporation, 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.]

<PAGE>


IN WITNESS WHEREOF, each Grantor duly assents to this Power of Attorney by his,
her or its signature as of the 29th 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


                                        SF ADVISORY PARTNERS II, 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



<PAGE>

                                        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
                                        ------------------------
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
