Document:

FOURTH AMENDMENT TO
                              AMENDED AND RESTATED
                            AGREEMENT OF PARTNERSHIP
                        GEODYNE ENERGY INCOME PRODUCTION
                                 PARTNERSHIP I-F

      This Fourth Amendment to Amended and Restated  Agreement of Partnership of
Geodyne Energy Income Production  Partnership I-F (the "Partnership") is entered
into  by  and  between  Geodyne  Resources,   Inc.  ("Resources"),   a  Delaware
corporation,  as successor  Managing Partner,  and Geodyne Energy Income Limited
Partnership I-F ("Geodyne I-F"), as General Partner.

      WHEREAS, on September 10, 1986, Geodyne Production Company ("Production"),
as Managing Partner,  and Geodyne I-F, as General Partner,  executed and entered
into that certain Agreement of Partnership of PaineWebber/Geodyne  Energy Income
Production Partnership I-F (the "Preformation Agreement"); and

      WHEREAS,  on December  17, 1986,  Production  and Geodyne I-F executed and
entered into that certain  Amended and Restated  Agreement of  Partnership  (the
"Agreement"); and

      WHEREAS, on February 26, 1993, but effective March 1, 1993, Production and
Geodyne I-F executed and entered  into that certain  First  Amendment to Amended
and Restated Agreement of Partnership (the "Agreement"),  whereby it changed (i)
the name of the Partnership from  "PaineWebber/Geodyne  Energy Income Production
Partnership I-F" to "Geodyne Energy Income Production Partnership I-F", (ii) the
address of the Partnership's  principal place of business, and (iii) the address
for the Partnership's agent for service of process; and

      WHEREAS, on July 1, 1996,  Production and Geodyne I-F executed and entered
into that certain Second  Amendment to Agreement,  whereby all references in the
Agreement  to Geodyne  Production  Company as Managing  Partner  were amended to
reflect, instead, Geodyne Resources, Inc. ("Resources") as Managing Partner; and

      WHEREAS,  Section 10.1 of the Agreement provides that the Managing Partner
(as defined in the Agreement) may,  without prior notice or consent of any other
Partner (as defined in the Agreement), amend any provision of this Agreement if,
in its opinion,  such amendment does not have a material adverse effect upon the
Limited Partnership (as defined in the Agreement); and

                                      -1-
<PAGE>

     WHEREAS,  Section 2.4 of the Agreement  provides that the Partnership shall
continue in full force and effect until  December 31,  2001,  provided  that the
Managing  Partner may extend the term of the  Partnership for up to four periods
of two years each or until  dissolution prior thereto pursuant to the provisions
of the Agreement, and

      WHEREAS,  Resources has elected to extend the life of the  Partnership  an
additional two years.

      NOW,  THEREFORE,  BE IT RESOLVED that Section 2.4. is hereby amended and
restated as follows:

                  The Production  Partnership shall continue in force and effect
            until  December 31,  2003,  provided  that the Managing  Partner may
            extend such term for up to three periods of two years each, or until
            dissolution prior thereto pursuant to the provisions hereof.

       IN WITNESS  WHEREOF,  the parties hereto have hereunto set their hands as
of the 14th day of November, 2001.

                                       Geodyne Resources, Inc.
                                       as Managing Partner

                                       By:  /s/ Dennis R. Neill
                                            ----------------------------
                                            Dennis R. Neill
                                            President

                                       Geodyne Energy Income Limited
                                       Partnership I-F
                                       as General Partner

                                       By Geodyne Resources, Inc.
                                          General Partner

                                       By:  /s/ Dennis R. Neill
                                            ----------------------------
                                            Dennis R. Neill
                                            President

                                      -2-ex10-f

 

Weyerhaeuser Company and Subsidiaries

EXHIBIT 10 (f) — Description of the Weyerhaeuser Company Option Exercise/Share Purchase Program

Option Exercise/Share Purchase Program

In October 2001, the Weyerhaeuser Company Board of Directors approved a program for a limited
number of company employees who had been prohibited for more than two years from exercising options
previously granted to them under company option plans as a result of prohibitions on trading put in
place by the company in connection with material transactions. The company’s executive officers are
all participants in the program. Under the program, participants are allowed to exercise options
granted to them under the company’s 1998 Long-Term Incentive
Plan and prior company option plans
and simultaneously sell to the company the shares acquired upon exercise. Participants who
exercise options under this program receive the difference between the exercise price of the
options and the fair market value of the shares. The fair market value of such shares is the
average of the high and low price for the company’s common stock (as reported in the New York Stock
Exchange Consolidation Tape) on the day of exercise. The remaining terms of the options are
governed by the plans under which the options were granted.<PAGE>

Willamette Industries, Inc.
1300 S.W. Fifth Ave., Ste. 3800
Portland, Oregon  97201

March 16, 2001

[addressee]

--------------------------

--------------------------

Dear _____________:

              This letter amends and supplements the letter agreements dated
April 29, 1999 and January 19, 2001, between you and Willamette Industries, Inc.
("Willamette"), relating to certain benefits following a change in control of
Willamette (the "CIC Agreement"). The changes to Section 3(d)(ii) as previously
in effect are marked on the enclosed copy of that section.

              1. Section 3(d)(ii) is amended to read in its entirety as follows:

              "In lieu of any further salary payments to you for the periods
subsequent to the Date of Termination, an amount of severance pay equal to the
Applicable Percentage (as defined below in this paragraph (ii)) multiplied by
the sum of (A) your annual base salary, at the rate in effect on the date the
Change in Control occurs, plus (B) the average of the two most recent annual
incentive compensation grants (if any) made to you, or accrued to your benefit
(prior to any deferrals), prior to the date the Change in Control occurs, plus
(C) the average annual matching contributions made by the Company on your behalf
to the Company's Stock Purchase Plan and its 1993 Deferred Compensation Plan in
respect of the two fiscal years of the Company last ended prior to the fiscal
year in which the Change in Control occurs. "Applicable Percentage" means 300
percent reduced (if you are age 62 or older as of the Date of Termination) by
8.33 percent for each full month that your age exceeds 62 as of the Date of
Termination.

              For purposes of this Agreement, "annual incentive compensation"
includes, without limitation, annual grants of stock options, Stock Appreciation
Rights (SARs) and restricted stock under the Company's 1995 Long-Term Incentive
Compensation Plan, as amended and restated (the "Incentive Plan"). The value of
your annual incentive compensation represented by restricted stock granted to
you under the Incentive Plan during any fiscal year of the Company, will be
equal to the number of Company Shares granted to you multiplied by the market
value of a Company share on the grant date. The value of your annual incentive
compensation represented by stock options or SARs granted to you under the
Incentive Plan during any fiscal year of the Company will be equal to the number
of Company Shares subject to your stock option or SAR multiplied by the value of
each stock option or SAR determined as of the grant date of that option or SAR
using the Black Scholes option pricing model and the market value of a Company
Share on the grant date and using the following assumptions:

                                      -1-
<PAGE>

              (a) The option or SAR will be assumed to be fully exercisable as
of the grant date;

              (b) The option or SAR will be assumed to have an expected life
equal to the average period for which options or SARs granted under the Plan
have remained outstanding which is 6.4 years;

              (c) The volatility of the Company Shares underlying each option or
SAR will be determined based on the simple average of four volatility
calculations: (1) the daily close stock price for the three-year period
preceding each stock option or SAR grant date; (2) the daily close stock price
for the 52-week preceding each stock option or SAR grant date; (3) the daily
close stock price for the most recent peak-to-peak stock cycle, with a duration
cycle of over 1 year, preceding each stock option or SAR grant date; and (4) the
daily close stock price for the most recent trough-to-trough stock cycle, with a
duration cycle of over 1 year, preceding each stock option or SAR grant date.
For any period of time during which the Company's Shares are being solicited in
the public arena through a public tender offer or public bidding process, the
volatility factor for such period will be the daily average of the S&P forest
products index for the four calculations noted above.

              (d) The risk-free rate will be the yield to maturity on a U.S.
Treasury note with a term of 6.4 years.

              (e) The dividend is the actual per share cash dividend paid with
respect to Company Shares in the most current calendar quarter prior to the
grant date, annualized.

                                            Sincerely,

                                            G. W. Hawley
                                            Executive Vice Pres., C.F.O.

ACCEPTED and agreed to by

---------------------------------------

this _________ day of __________, 2001.

                                      -2-

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