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                                                                    EXHIBIT 10.6

                             THIRD AMENDMENT TO THE
             ALLIED WASTE INDUSTRIES, INC. 1991 INCENTIVE STOCK PLAN
                   (AS AMENDED AND RESTATED ON MARCH 29, 2001)

         THIS AMENDMENT, is made and entered into on February 5, 2004, by ALLIED
WASTE INDUSTRIES, INC., a Delaware corporation ("Employer").

                                R E C I T A L S:

         1.       The Employer maintains the Allied Waste Industries, Inc. 1991
Incentive Stock Plan, as amended and restated effective March 29, 2001 ("Plan"),
and as thereafter amended;

         2.       The Employer has reserved the right to amend the Plan in whole
or in part; and

         3.       The Employer intends to amend the Plan.

THEREFORE, the Employer hereby adopts this Amendment as follows:

                  1.       Section 6(c)(iii) of the Plan is hereby amended to
read as follows:

                  An Option shall be exercised by delivering notice to the
         Company's principal office, to the attention of its Secretary, along
         with the agreement evidencing the Option and payment for shares of
         Common Stock to be purchased upon the exercise of the Option. The
         notice must specify the number of shares of Common Stock with respect
         to which the Option is being exercised and must be signed by the
         Participant. Payment shall be made either (A) in cash, by certified
         check, bank cashier's check or wire transfer, (B) subject to the
         approval of the Committee, in shares of Common Stock owned by the
         Participant for a period of at least six months prior to the effective
         date on which the Option is exercised and valued at their Fair Market
         Value on the effective date of such exercise, (C) subject to the
         approval of the Committee, in the form of a "cashless exercise" (as
         described below) or (D) subject to the approval of the Committee, in
         any combination of the foregoing. Any payment in shares of Common Stock
         shall be effected by the delivery of such shares to the Secretary of
         the Company, duly endorsed in blank or accompanied by stock powers duly
         executed in blank, together with any other documents and evidences as
         the Secretary of the Company shall require from time to time. The
         effective date on which an Option is exercised shall be established by
         the Secretary and shall occur within an administratively reasonable
         period of time (but no later than five business days) after the
         Secretary receives the notice, agreement, and payment referred to
         above. Prior to the exercise date, the Participant may withdraw the
         notice, in which case the Option will not be exercised.

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                  The cashless exercise of an Option shall be pursuant to
         procedures whereby the Participant, by written notice, irrevocably
         directs (A) an immediate market sale or margin loan with respect to all
         or a portion of the shares of Common Stock to which he is entitled upon
         exercise pursuant to an extension of credit by a brokerage firm or
         other party (provided that such brokerage firm or other party is not
         affiliated with the Company) of the exercise price and any tax
         withholding obligations resulting from such exercise, (B) the delivery
         of the shares of Common Stock directly from the Company to such
         brokerage firm or other party, and (C) delivery to the Company from the
         brokerage firm or other party, from the proceeds of the sale or the
         margin loan, of an amount sufficient to pay the exercise price and any
         tax withholding obligations resulting from such exercise.

         2.       The Effective Date of this Amendment shall be February 5,
2004.

         3.       Except as amended, all of the terms and conditions of the Plan
shall remain in full force and effect.

                                    ALLIED WASTE INDUSTRIES, INC., a
                                       Delaware corporation

                                    By__________________________________________
                                       Steven M. Helm, Senior Vice President and
                                       General Counsel<PAGE>

                                                                    EXHIBIT 10.7

                             FOURTH AMENDMENT TO THE
             ALLIED WASTE INDUSTRIES, INC. 1991 INCENTIVE STOCK PLAN
                   (AS AMENDED AND RESTATED ON MARCH 29, 2001)

         THIS AMENDMENT, is made and entered into on February 5, 2004, by ALLIED
WASTE INDUSTRIES, INC., a Delaware corporation ("Employer").

                                R E C I T A L S:

         1.       The Employer maintains the Allied Waste Industries, Inc. 1991
Incentive Stock Plan, as amended and restated effective March 29, 2001 ("Plan"),
and as thereafter amended;

         2.       The Employer has reserved the right to amend the Plan in whole
or in part; and

         3.       The Employer intends to amend the Plan.

         THEREFORE, the Employer hereby adopts this Amendment as follows:

         1.       Section 2(o) of the Plan is amended to read as follows:

                  "Incentive Award" means an Option, a share or unit of
         Restricted Stock, a Performance Award, a share of Phantom Stock, a
         Stock Bonus or Cash Bonus granted pursuant to the terms of the Plan.

         2.       Section 2(q) of the Plan is amended to read as follows:

                  "Issue Date" means the date established by the Committee on
         which certificates representing shares of Restricted Stock shall be
         issued by the Company pursuant to the terms of Section 7(d). With
         respect to units of Restricted Stock, "Issue Date" means the date
         established by the Committee on which either (i) certificates
         representing shares of Common Stock shall be issued by the Company for
         units pursuant to the terms of Sections 7(a) and 7(d)(iii), or (ii)
         payment will be made for such units pursuant to the terms of Section
         7(a).

         3.       Section 2(gg) of the Plan is amended to read as follows:

                  "Vesting Date" means the date established by the Committee on
         which a share or unit of Restricted Stock or Phantom Stock may vest.

         4.       Section 2 of the Plan is amended by adding the following new
definitions in alphabetical order and renumbering the subsections accordingly:

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                  "Original Issue Date" means the date that the certificates
         would have been issued (or payment would have been made) for units of
         Restricted Stock, but for the Participant's election to defer the Issue
         Date pursuant to Section 7(a).

                  Unit of "Restricted Stock" means the Company's unfunded
         promise to pay a share of Common Stock or its cash equivalent (pursuant
         to Section 7(a)) which is granted pursuant to the terms of Section 7
         and which is subject to the restrictions set forth in Section 7(c) for
         so long as such restrictions continue to apply to such unit.

         5.       Section 3 of the Plan is amended as follows:

                  a.       In the first paragraph, the term "shares of
         Restricted Stock" is replaced by "shares and/or units of Restricted
         Stock."

                  b.       In the first, second, and third sentences of the
         second paragraph, the term "shares of Restricted Stock" is replaced by
         "shares or units of Restricted Stock."

                  c.       In the second sentence of the second paragraph, the
         phrase "after the effective date of the amendment" is replaced by
         "after March 29, 2001."

                  c.       In the third paragraph, the following new sentence is
         added: "If any units of Restricted Stock are forfeited or canceled for
         any reason, the shares of Common Stock subject to those units shall
         again be available for grant under the Plan."

         6.       Section 4 of the Plan is amended by replacing the reference to
"share of Restricted Stock" with "share or unit of Restricted Stock" in the
fourth paragraph of that Section.

         7.       Section 7 of the Plan is amended to read as follows:

                  7.       RESTRICTED STOCK

                  The Committee may grant shares and/or units of Restricted
         Stock pursuant to the Plan for such consideration as the Committee may
         determine, including (without limitation) cash, cash equivalents,
         full-recourse promissory notes, past services or future services. Each
         grant of shares or units of Restricted Stock shall be evidenced by an
         agreement in such form as the Committee shall from time to time
         approve. Each grant of shares or units of Restricted Stock shall comply
         with and be subject to the following terms and conditions.

                  (a)      Issue Date and Vesting Date. At the time of the grant
         of shares of Restricted Stock, the Committee shall establish an Issue
         Date or Issue Dates and a Vesting Date or

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         Vesting Dates with respect to such shares. The Committee may divide
         such shares into classes and assign a different Issue Date and/or
         Vesting Date for each class. Except as provided in Sections 7(c) and
         7(f), upon the occurrence of the Issue Date with respect to a share of
         Restricted Stock, a share of Restricted Stock shall be issued in
         accordance with the provisions of Section 7(d). Provided that all
         conditions with respect to the vesting of a share of Restricted Stock
         imposed pursuant to Section 7(b) hereof are satisfied, and except as
         provided in Sections 7(c) and 7(f), upon the occurrence of the Vesting
         Date with respect to a share of Restricted Stock, such share shall vest
         and the restrictions of Section 7(c) shall cease to apply to such
         share.

                  At the time of the grant of units of Restricted Stock, the
         Committee shall establish one or more Vesting Dates with respect to
         such units. Unless otherwise specified in the agreement granting the
         units, the Issue Date for a unit shall be the same date as the Vesting
         Date for such unit. Upon the occurrence of the Issue Date with respect
         to a unit of Restricted Stock, subject to the Participant's right, if
         any, to elect a deferral of the Issue Date (as described below), and as
         provided for in the agreement granting the unit, either (i) one share
         of Common Stock shall be issued to the Participant in accordance with
         the provisions of Section 7(d)(iii) or (ii) a lump sum cash payment
         will be made to the Participant in an amount equal to the Fair Market
         value of one share of Common Stock (determined as of the Issue Date).

                  A Participant who is eligible to participate in the Allied
         Waste Industries, Inc. Executive Deferred Compensation Plan ("Deferred
         Compensation Plan") may elect to defer the Issue Date(s) for one or
         more units of Restricted Stock. The Participant's election must be
         made, in writing, at least one year prior to the Vesting Date(s) for
         such unit(s) (or, if later, within 30 days of the date of grant for
         such unit(s)). The election shall be made pursuant to the terms of the
         Deferred Compensation Plan. When the Original Issue Date occurs, the
         unit subject to the election will be transferred into a deferred
         compensation account established under the Deferred Compensation Plan
         and will be subject to the terms of the Deferred Compensation Plan.
         Notwithstanding any election to defer the Issue Date(s) for one or more
         units, in the event of a Participant's death prior to the transfer to
         the Deferred Compensation Plan, all units subject to such election (and
         otherwise payable under the terms of this Plan) will be paid in full to
         the Participant's beneficiary within a reasonable time after notice to
         the Committee of the Participant's death or, if later, on the date such
         payment would be made to the Participant absent the deferral election.

                  (b)      Conditions to Vesting. At the time of the grant of
         shares or units of Restricted Stock, the Committee may impose such
         restrictions or conditions, not inconsistent with the provisions
         hereof, to the vesting of such shares or units as it, in its absolute
         discretion, deems appropriate. By way of example and not by way of
         limitation, the Committee may require, as a condition to the vesting of
         any class or classes of shares or units of Restricted Stock, that the
         Participant or the Company achieve certain performance criteria, such
         criteria to be specified by the Committee at the time of the grant of
         such shares or units.

                  (c)      Restrictions on Transfer. Prior to the Issue Date, a
         Participant shall not be entitled to assign or transfer a unit of
         Restricted Stock. Prior to the vesting of a share of Restricted Stock,
         a Participant shall be entitled to assign or transfer such share and
         all of the

<PAGE>

         rights related thereto to the extent permitted by this Section 7(c).
         Any such assignment or transfer must not be for value. Any such
         assignment or transfer is limited to an assignment or transfer to: (i)
         a child, stepchild, grandchild, sibling, niece, nephew, mother-in-law,
         father-in-law, son-in-law, daughter-in-law, brother-in-law or
         sister-in-law, including adoptive relationships, (ii) any person
         sharing the Participant's household (other than a tenant or employee),
         (iii) a trust in which the persons described in (i) or (ii) (or the
         Participant) hold more than 50% of the beneficial interest or (iv) a
         private foundation in which the persons described in (i) or (ii) (or
         the Participant) own more than 50% of the voting interests. A transfer
         to any entity in which more than 50% of the voting interests are owned
         by the persons described in (i) or (ii) (or the Participant) in
         exchange for an interest in that entity shall not constitute a transfer
         for value.

                  (d)      Issuance of Certificates

                           (i)      Except as provided in Sections 7(c) or 7(f),
                  reasonably promptly after the Issue Date with respect to
                  shares of Restricted Stock, the Company shall cause to be
                  issued a stock certificate, registered in the name of the
                  Participant to whom such shares were granted, evidencing such
                  shares; provided, that the Company shall not cause to be
                  issued such a stock certificate unless it has received a stock
                  power duly endorsed in blank with respect to such shares. Each
                  such stock certificate shall bear the following legend:

                           The transferability of this certificate and the
                           shares of stock represented hereby are subject to the
                           restrictions, terms and conditions (including
                           forfeiture and restrictions against transfer)
                           contained in the Allied Waste Industries, Inc. 1991
                           Incentive Stock Plan, as amended, and an agreement
                           entered into between the registered owner of such
                           shares and Allied Waste Industries, Inc. A copy of
                           the Plan and agreement is on file in the office of
                           the Secretary of Allied Waste Industries, Inc., 15880
                           North Greenway - Hayden Loop, Suite 100, Scottsdale,
                           Arizona 85260.

                           Such legend shall not be removed from the certificate
                  evidencing such shares until such shares vest pursuant to the
                  terms of this Plan and the agreement governing the grant of
                  Restricted Stock.

                           (ii)     Each certificate issued pursuant to
                  Paragraph 7(d)(i), together with the stock powers relating to
                  the shares of Restricted Stock evidenced by such certificate,
                  shall be held by the Company. The Company shall issue to the
                  Participant a receipt evidencing the certificates held by it
                  which are registered in the name of the Participant.

                           (iii)    If, under Section 7(a), shares of Common
                  Stock are to be issued for a unit of Restricted Stock, then
                  reasonably promptly after the Issue Date with respect to such
                  unit, the Company shall cause to be issued a stock
                  certificate, registered in the name of the Participant to whom
                  such unit was granted, evidencing the share,

<PAGE>

                  provided that such stock certificate shall not be required to
                  bear the legend set forth in Section 7(d)(i) above and that
                  such stock certificate shall not issue a fractional share.
                  Rather, the Fair Market Value of any fractional share will be
                  paid in cash.

                  (e)      Consequences Upon Vesting/Issue Date. Upon the
         vesting of a share of Restricted Stock pursuant to the terms hereof,
         the restrictions of Section 7(c) shall cease to apply to such share.
         Reasonably promptly after a share of Restricted Stock vests pursuant to
         the terms hereof, the Company shall cause to be issued and delivered to
         the Participant to whom such shares were granted, a certificate
         evidencing such share, free of the legend set forth in Paragraph
         7(d)(i), together with any other property of the Participant held by
         Company pursuant to Section 12(a); provided, however, that such
         delivery shall be effected for all purposes when the Company shall have
         deposited such certificate and other property in the United States
         mail, addressed to the Participant.

                  Upon the Issue Date of a unit of Restricted Stock pursuant to
         the terms hereof, the restrictions of Section 7(c) shall cease to apply
         to such unit. Reasonably promptly after the Issue Date of a unit of
         Restricted Stock (and subject to the Participant's right, if any, to
         defer the Issue Date pursuant to Section 7(a)), as required by and
         pursuant to Section 7(a), the Company shall either (i) cause to be
         issued and delivered to the Participant to whom such unit was granted a
         certificate in accordance with Section 7(d)(iii) together with any
         other property of the Participant held by Company pursuant to Section
         12(a), or (ii) cause a lump sum payment to be made to the Participant.
         If the provisions of Section 7(a) require issuance and delivery of a
         certificate, such delivery shall be effected for all purposes when the
         Company shall have deposited such certificate and other property in the
         United States mail, addressed to the Participant.

                  (f)      Effect of Termination of Employment

                           (i)      If the employment of a Participant with the
                  Company shall terminate for any reason other than Cause prior
                  to the vesting of shares or units of Restricted Stock granted
                  to such Participant, a portion of such shares or units, to the
                  extent not forfeited or canceled on or prior to such
                  termination pursuant to any provision hereof, shall vest on
                  the date of such termination. The portion referred to in the
                  preceding sentence shall be determined by the Committee at the
                  time of the grant of such shares or units of Restricted Stock
                  and may be based on the achievement of any conditions imposed
                  by the Committee with respect to such shares or units pursuant
                  to Section 7(b). Such portion may equal zero, and any
                  non-vested shares or units shall be forfeited as of the
                  commencement of business on the date of the Participant's
                  termination of employment.

                           (ii)     In the event of the termination of a
                  Participant's employment for Cause, all shares and units of
                  Restricted Stock granted to such Participant which have not
                  vested as of the commencement of business on the date of such
                  termination shall immediately be forfeited.

<PAGE>

                  (g)      Effect of Change in Control. Upon the occurrence of a
         Change in Control, all shares and units of Restricted Stock which have
         not yet vested (including those with respect to which the Issue Date
         has not yet occurred) shall immediately vest.

                  (h)      Voting and Dividend Rights. The holders of shares of
         Restricted Stock awarded under this Plan shall have the same voting,
         dividend and other rights as the Company's other stockholders (except
         that the transfer of such shares is limited in accordance with Section
         7(c) prior to vesting); provided, however, that the Committee may
         require in the agreement granting the shares of Restricted Stock that
         cash dividends be invested in additional shares of Restricted Stock,
         subject to the same conditions and restrictions as the Incentive Award
         with respect to which the dividends were paid.

                  The holders of units of Restricted Stock awarded under this
         Plan shall have no voting, dividend, or other shareholder rights unless
         and until certificates are issued pursuant to Section 7(d)(iii).
         Notwithstanding the foregoing, the agreement evidencing units of
         Restricted Stock may provide, in the event of a cash dividend paid by
         the Company to holders of Common Stock generally, for the crediting of
         an additional number of units of Restricted Stock ("Additional
         Restricted Stock Units") equal to the total number of whole units of
         Restricted Stock and any Additional Restricted Stock Units previously
         credited multiplied by the dollar amount of the cash dividend paid per
         share of Common Stock by the Company, divided by the Fair Market Value
         of a share of Common Stock. The agreement also may provide, in the
         event of a stock dividend paid by the Company to holders of Common
         Stock generally, for the crediting of Additional Restricted Stock Units
         equal to the total number of whole units of Restricted Stock and
         Additional Restricted Stock Units previously credited multiplied by the
         share dividend paid per share of Common Stock by the Company. Any
         Additional Stock Units shall be subject to the same terms and
         restrictions as the units of Restricted Stock to which they relate.

         8.       The first sentence of Section 11 of the Plan is amended to
read as follows:

                  The Committee may, in its absolute discretion, grant in
         connection with any grant or upon the occurrence of the Issue Date of
         Restricted Stock or shares of Common Stock granted as a Performance
         Award or Stock Bonus or at any time thereafter, a cash bonus, payable
         promptly after the date on which the Participant is required to
         recognize income for federal income tax purposes in connection with
         such Restricted Stock, Performance Award or Stock Bonus, in such
         amounts as the Committee shall determine from time to time; provided,
         however, that in no event shall the amount of a Cash Bonus exceed the
         Fair Market Value of the related shares of Restricted Stock or shares
         of Common Stock granted or issued pursuant to units of Restricted
         Stock, a Performance Award or Stock Bonus on such date.

         9.       The first paragraph of Section 12(a) is amended to read as
follows:

                  Upon the occurrence of any dividend, stock split,
         recapitalization, merger, consolidation, combination, exchange of
         shares or otherwise, unless the Committee otherwise determines in its
         absolute discretion, if a Participant receives any securities or other
         property (including dividends paid in cash) with respect to a share or
         unit of Restricted

<PAGE>

         Stock, the Issue Date with respect to which occurs prior to such event,
         but which has not vested as of the date of such event, such securities
         or other property will not vest until such share or unit of Restricted
         Stock vests and shall be held by the Company pursuant to Paragraph
         7(d)(ii) as if such securities or other property were non-vested shares
         or units of Restricted Stock.

         10.      The second paragraph of Section 12(a) of the Plan is amended
by replacing the term "shares of Restricted Stock" with "shares or units of
Restricted Stock."

         11.      Sections 12(b), (c), (d), and (e) are amended by replacing the
term "Option" or "Options" with "Incentive Award" or "Incentive Awards". Section
12(b) is further amended by replacing "and" with "and/or" in subsection (ii).
Section 12(c) is further amended by adding the phrase ", if applicable," before
the phrase "the securities which a holder." Section 12(d) is further amended by
adding the phrase "full or" before the phrase "partial consideration." Section
12(e) is further amended by adding the phrase ", if applicable," before the
phrase "as the Committee may consider."

         12.      Section 17 is amended to read as follows:

                  Whenever shares of Common Stock are to be issued upon the
         exercise of an Option, the occurrence of the Issue Date or Vesting Date
         with respect to a share or unit of Restricted Stock, the payment of a
         Performance Award in shares of Common Stock or the payment of a Stock
         Bonus, the Company shall have the right to require the Participant to
         remit to the Company in cash an amount sufficient to satisfy federal,
         state and local withholding tax requirements, if any, attributable to
         such exercise, occurrence or payment prior to the delivery of any
         certificate or certificates for such shares. Alternatively, the Company
         shall have the right to withhold from the shares to be issued for such
         Incentive Award an amount sufficient to satisfy the federal, state, and
         local withholding tax requirements, if any, attributable to such
         exercise, occurrence or payment. In addition, upon the grant of a Cash
         Bonus, the payment of a Performance Award, or the making of a payment
         with respect to a share of Phantom Stock or a unit of Restricted Stock,
         the Company shall have the right to withhold from any cash payment
         required to be made pursuant thereto an amount sufficient to satisfy
         the federal, state and local withholding tax requirements, if any,
         attributable to such exercise or grant.

         13.      The Plan is amended by adding the following new Section 25:

                  25. VESTING OF FRACTIONAL AMOUNTS

<PAGE>

                  With respect to any Incentive Award that vests in a manner
         that would result in fractional shares of Common Stock being issued,
         any fractional share which would be one-half or greater a share shall
         be rounded up to a full share, and any fractional share which is less
         than one-half a share shall not be vested or issued unless and until
         the last increment of such Incentive Award becomes vested.

         14.      The Effective Date of this Amendment shall be February 5,
2004.

         15.      Except as amended, all of the terms and conditions of the Plan
shall remain in full force and effect.

                                    ALLIED WASTE INDUSTRIES, INC., a
                                        Delaware corporation

                                    By__________________________________________
                                      Steven M. Helm, Senior Vice President and
                                      General Counsel

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