Document:

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                                                                    Exhibit 4.28

         SUPPLEMENTAL INDENTURE TO THE SIXTEENTH SUPPLEMENTAL INDENTURE

      This SUPPLEMENTAL INDENTURE TO THE SIXTEENTH SUPPLEMENTAL INDENTURE, dated
as of September 20, 2005 (this "SUPPLEMENTAL INDENTURE"), among ALLIED WASTE
NORTH AMERICA, INC., a Delaware corporation (the "COMPANY"), having its
principal place of business at 15880 North Greenway-Hayden Loop, Suite 100,
Scottsdale, Arizona 85260, the GUARANTORS signatory hereto (the "GUARANTORS")
and U.S. BANK NATIONAL ASSOCIATION, as trustee (the "TRUSTEE").

                                   WITNESSETH:

      WHEREAS, the Company, the Guarantors party thereto and the Trustee have
heretofore executed and delivered the indenture, dated as of December 23, 1998
(the "BASE INDENTURE"), as supplemented by the sixteenth supplemental indenture,
dated as of March 9, 2005 among the Company, the Guarantors and the Trustee (the
"SIXTEENTH SUPPLEMENTAL INDENTURE" and, as amended, together with the Base
Indenture, the "INDENTURE"), providing for the issuance of 7 1/4% Senior Notes
due 2015 (the "NOTES") of the Company;

      WHEREAS, there is currently outstanding under the Indenture $600,000,000
in aggregate principal amount of the Notes;

      WHEREAS, Section 8.1 of the Base Indenture provides that the Company, the
Guarantors and the Trustee may, without the consent of any Holders at any time
and from time to time, may enter into a supplemental indenture for the purpose
of adding Guarantors to become obligated under the Indenture;

      WHEREAS, the Restricted Subsidiaries listed on Schedule A hereto are
obligated to become Guarantors of the Notes pursuant to Section 15.5 of the Base
Indenture;

      WHEREAS, the Company and each of the Guarantors, has been authorized by a
resolution of each of their respective Board of Directors (or similar governing
body) to enter into this Supplemental Indenture; and

      WHEREAS, all other acts and proceedings required by law, by the Indenture,
by the certificate of incorporation and by-laws (or similar governing documents)
of the Company and each of the Guarantors, to make this Supplemental Indenture a
valid and binding agreement for the purposes expressed herein, in accordance
with its terms, have been duly done and performed;

      NOW, THEREFORE, in consideration of the premises and the covenants and
agreements contained herein, and for other good and valuable consideration the
receipt of which is hereby acknowledged, and for the equal and proportionate
benefit of the Holders of the Notes, the Company and the Trustee hereby agree as
follows:

      Section 1.  ADDITIONAL GUARANTORS.

      (1) The Restricted Subsidiaries listed on Schedule A hereto are henceforth
Guarantors of the Notes pursuant to Section 15.5 of the Base Indenture. The
Guarantors agree to provide an unconditional Guarantee on the terms and subject
to the conditions of the Indenture including but not limited to Article 15
thereof.

      (2) This Supplemental Indenture shall not change any other term of the
Notes, the Indenture or the Sixteenth Supplemental Indenture.

                                       1
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      Section 2. EFFECTIVENESS, OPERATIVENESS

      (1) This Supplemental Indenture will be binding and effective upon the
Company, the Guarantors, the Trustee and the Holders as of the date hereof

      Section 3. REFERENCE TO AND EFFECT ON THE INDENTURE

      (1) On and after the effective date of this Supplemental Indenture, each
reference in the Indenture to "this Indenture," "hereunder," "hereof," or
"herein" shall mean and be a reference to the Indenture as supplemented by this
Supplemental Indenture unless the context otherwise requires.

      (2) Except as specifically amended above, the Indenture shall remain in
full force and effect and is hereby ratified and confirmed.

      Section 4. GOVERNING LAW

      This Supplemental Indenture shall be governed and construed by the
Internal Law of the State of New York but without giving effect to applicable
principles of conflicts of law to the extent that the application of the laws of
another jurisdiction would be required thereby.

      Section 5. DEFINED TERMS

      Unless otherwise indicated, capitalized terms used herein and not defined
shall have the respective meanings given such terms in the Indenture.

      Section 6. TRUST INDENTURE ACT CONTROLS

      If any provision of this Supplemental Indenture limits, qualifies or
conflicts with another provision of this Supplemental Indenture or the Indenture
that is required to be included by the Trust Indenture Act of 1939, as amended
(the "ACT"), as in force at the date this First Supplemental Indenture is
executed, the provision required by said Act shall control.

      Section 7. TRUSTEE DISCLAIMER

      The recitals contained in this Supplemental Indenture shall be taken as
the statements of the Company, and the Trustee assumes no responsibility for
their correctness. The Trustee makes no representations as to the validity or
sufficiency of this Supplemental Indenture.

      Section 8. COUNTERPARTS

      This Supplemental Indenture may be executed in several counterparts, all
of which together shall constitute one agreement binding on all parties hereto,
notwithstanding that all the parties have not signed the same counterpart.

      Section 9. TITLES

      Section titles are for descriptive purposes only and shall not control or
alter the meaning of this Supplemental Indenture as set forth in the text.

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      Section 10. SEVERABILITY

      In case any provision of this Supplemental Indenture shall be invalid,
illegal or unenforceable, the validity, legality and enforceability of the
remaining provisions shall not in any way be effected or impaired thereby.

                            [Signature page follows]

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      IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture to be executed as of the day and year first above written.

                                        ALLIED WASTE NORTH AMERICA, INC.

                                        By: /s/  Thomas P. Martin
                                            ------------------------------------
                                            Name:  Thomas P. Martin
                                            Title: Treasurer

                                        ALLIED WASTE INDUSTRIES, INC.

                                        for purposes of Article 15 of the
                                        Indenture and as Guarantor of the Notes
                                        and as Guarantor of the obligations of
                                        the Subsidiary Guarantors under the
                                        Subsidiary Guarantees

                                        By: /s/   Thomas P. Martin
                                            ------------------------------------
                                            Name:  Thomas P. Martin
                                            Title: Treasurer

                                        Each of the Subsidiary Guarantors Listed
                                        on Schedule A hereto, as Guarantor of
                                        the Notes

                                        By: /s/ Thomas P. Martin
                                            ------------------------------------
                                        Name:  Thomas P. Martin
                                        Title: Treasurer
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                                        U.S. BANK NATIONAL ASSOCIATION

                                        By: /s/  Richard Prokosch
                                            ------------------------------------
                                        Name:  Richard Prokosch
                                        Title: Vice President
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                                     SCHEDULE A

Allied Waste Transfer Services of Florida, LLC, a Florida limited liability
company

Allied Waste Transfer Services of Iowa, LLC, an Iowa limited liability company

Allied Waste Transfer Services of New York, LLC, a New York limited liability
company

Allied Waste Transfer Services of North Carolina, LLC, a North Carolina limited
liability company

Allied Waste Systems of Michigan, LLC, a Michigan limited liability company

Benson Valley Landfill General Partnership, a Kentucky general partnership

Blue Ridge Landfill General Partnership, a Kentucky general partnership

Central Arizona Transfer, Inc., an Arizona corporation

C & C Expanded Sanitary Landfill, LLC, a Missouri limited liability company

Giles Road Landfill TX, LP, a Delaware limited partnership

Green Valley Landfill General Partnership, a Kentucky general partnership

Morehead Landfill General Partnership, a Kentucky general partnership

Tessman Road Landfill TX, LP, a Delaware limited partnershipEXHIBIT 10.1

                         MASTER STANDBY LETTER OF CREDIT
                           AND REIMBURSEMENT AGREEMENT

     This MASTER STANDBY LETTER OF CREDIT AND REIMBURSEMENT AGREEMENT is dated
as of September 30, 2005 (the "Agreement") and is by and among National
Australia Bank Limited, New York Branch (the "Bank"), XL Capital Ltd, a company
incorporated under the laws of the Cayman Islands, XL America, Inc., a Delaware
corporation, XL Insurance (Bermuda) Ltd, a Bermuda limited liability company,
and XL Re Ltd, a Bermuda limited liability company (collectively, the "Account
Parties" and each an "Account Party").

     WHEREAS, the Account Parties have requested that the Bank issue letters of
credit from and after the date hereof and the Bank is prepared to issue such
letters of credit upon the terms and conditions hereof.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     1. Subject to the terms and conditions herein, from and after the date
hereof to but not including September 29, 2006 (the "Termination Date"), the
Bank agrees to issue one or more letters of credit (collectively the "Letters of
Credit" and each a "Letter of Credit") in aggregate principal amount not
exceeding US $150,000,000 at any one time outstanding (the "Commitment").

     2. (a) The obligation of the Bank to issue any Letter of Credit hereunder
shall be subject to receipt by the Bank from an Account Party, in form and
substance reasonably satisfactory to the Bank, of (i) a request in the form of
Exhibit A hereto (a "L/C Application") to issue a letter of credit hereunder,
the expiration of which shall in no event be on a date (the "Expiry Date") which
is later than one year after the date of its issuance, such request to be
received by the Bank at least four business days prior to the proposed date of
issuance, (ii) the proposed form of the letter of credit and (iii) a corporate
secretary's certificate (a) attesting to resolutions of its Board of Directors
or other action taken to authorize this Agreement, the L/C Application and any
other documents reasonably requested to be delivered in connection herewith and
(b) certifying the names, titles and specimen signatures of the officers or
other persons authorized to execute and deliver this Agreement, the L/C
Application and other documents reasonably requested to be delivered in
connection herewith (each an "Authorized Person").

     (b) The Bank shall be entitled to rely conclusively on the authority of the
Authorized Persons identified in such certificate, or any amendment thereof or
substitution therefor, until it shall have received a written notice signed by
an Authorized Person revoking or amending such certificate or substituting a new
certificate therefor.

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     3. The Account Parties unconditionally agree, jointly and severally and
regardless of the identity of the Account Party of a Letter of Credit, to pay to
the Bank, on demand in immediately available funds (in United States Dollars),
on each date on which a disbursement is made by the Bank pursuant to a Letter of
Credit, an amount equal to such disbursement. If payment is not made on the date
of disbursement, such amount shall bear interest (based on a 360-day year and
actual days elapsed) from the date of disbursement until paid in full, but
excluding the date paid, at a rate per annum equal to the rate of interest from
time to time announced by the Bank as its prime rate plus 2%.

     4. The Account Parties agree, jointly and severally, to pay to the Bank,
quarterly in arrears on the last business day of each March, June, September and
December and commencing December 30, 2005, (i) a facility fee which shall accrue
at a rate per annum equal to 0.07% on the Commitment amount (whether used or
unused) during the period from September 30, 2005 to the Termination Date; and
(ii) letter of credit fees which shall accrue at a rate per annum equal to 0.23%
of the amount available to be drawn under each Letter of Credit. All fees
payable hereunder shall be computed on the basis of a 360-day year and paid for
the actual number of days elapsed (including the first day but excluding the
last).

     5. The Account Parties' joint and several obligations to reimburse Letter
of Credit disbursements as provided in Section 3 above shall be absolute,
unconditional and irrevocable, and shall be performed strictly in accordance
with the terms of this Agreement, irrespective of any of the following
circumstances: (a) any lack of validity or enforceability of a Letter of Credit
or any document or instrument relating thereto; (b) the existence of any claim,
setoff, defense or other rights which any of the Account Parties may have at any
time against the Bank, the beneficiary or any other person or entity, whether in
connection with this Agreement or any unrelated transaction; (c) any document
presented under a Letter of Credit proving to be forged, fraudulent, invalid or
insufficient in any respect or any statement therein being untrue or inaccurate
in any respect whatsoever; (d) payment by the Bank under a Letter of Credit
against presentation of a draft or certificate which does not strictly comply
with the terms of a Letter of Credit, provided such payment shall have been made
by the Bank in good faith and without gross negligence and payment is made
against presentation of a draft or other document that at least substantially
complies with the terms of the relevant Letter of Credit; (e) any agreement by
the Bank and the beneficiary extending or shortening the Bank's time after
presentation to examine documents or to honor or give notice of discrepancies;
(f) at any time or from time to time, without notice to any Account Party, the
time for any performance of or compliance with any of such reimbursement
obligations of any other Account Party being waived, extended or renewed; (g)
any of such reimbursement obligations of any other Account Party being amended
or otherwise modified in any respect, or any guarantee of any of such
reimbursement obligations being released, substituted or exchanged in whole or
in part or otherwise dealt with; (h) the occurrence of any Event of Default; (i)
the existence of any proceedings of the type described in clause (g) or (h) of
Article VIII of that certain Credit Agreement dated as of June 22, 2005 among
the Account Parties hereunder, as account parties and guarantors thereunder,
various lenders parties thereto and JPMorgan Chase Bank, N.A., as administrative
agent (the "Syndicated Credit Agreement") with respect to any other Account
Party or any guarantor of any of such

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reimbursement obligations; (j) any lack of validity or enforceability of any of
such reimbursement obligations against any other Account Party or any guarantor
of any of such reimbursement obligations; or (k) any other event or circumstance
whatsoever, whether or not similar to any of the foregoing, that might, but for
the provisions of this Section 5, constitute a legal or equitable discharge of
the obligations of any Account Party hereunder, other than performance by an
Account Party hereunder. Without limiting any other provision of this Agreement,
the Bank: (i) may rely upon any oral, telephonic, facsimile, electronic, written
or other communication believed by it in good faith to have been authorized by
any Account Party, the beneficiary or anyone acting for any of them; (ii) shall
not be responsible for errors, omissions, interruptions or delays in
transmission or delivery of any message, advice or document in connection with a
Letter of Credit, whether transmitted by courier, mail, telecommunication or
otherwise, or for errors in interpretation of technical terms or in translation;
(iii) shall not be responsible for the identity or authority of any signer or
the form, accuracy, genuineness or legal effect of any draft, certificate or
other document presented under a Letter of Credit; and (iv) may accept as a
draft any written or electronic demand or other request for payment under a
Letter of Credit, even if such demand or other request is not in the form of a
negotiable draft.

     6. If after the date hereof, the adoption of or any change in any law or
regulation or in the interpretation thereof by, or compliance by the Bank with
any guideline or request from any central bank or other authority charged with
the administration thereof (whether or not having the force of law) shall
impose, modify or deem applicable any (a) reserve, special deposit or similar
requirement against letters of credit issued by the Bank or (b) capital adequacy
or similar requirement (including without limitation a requirement which affects
the manner in which the Bank allocates capital to letters of credit), and the
result thereof shall be to increase the cost to the Bank of issuing or
maintaining a Letter of Credit (which increase in cost shall be calculated in
accordance with the Bank's reasonable averaging and attribution methods) or to
reduce the rate of return on the Bank's capital as a consequence of its
obligations under a Letter of Credit to a level below that which the Bank could
have achieved but for such circumstances, then the Account Parties shall pay to
the Bank within 10 days of demand such additional amount or amounts as shall
compensate the Bank for such increase in cost or reduction in rate of return;
provided that this Section 6 shall not apply to Taxes, which shall be governed
exclusively by Section 7. A certificate of the Bank as to such additional amount
or amounts shall be conclusive, absent manifest error.

     7. (a) Any and all payments made to the Bank by any Account Party hereunder
shall be made free and clear of and without deduction for any Covered Taxes
unless an Account Party is required to withhold Covered Taxes. If an Account
Party shall be required by law to deduct any Covered Taxes from or in respect of
any sum payable hereunder to the Bank, (i) the sum payable shall be increased as
may be necessary so that after making all required deductions of Covered Taxes
(including deductions applicable to additional sums payable under this Section
7) the Bank receives an amount equal to the sum it would have received had no
such deductions been required and (ii) such Account Party shall pay the full
amount deducted to the relevant taxing authority in accordance with applicable
law and shall provide the Bank with the original or a certified copy of the
receipt evidencing such payment.

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If the Bank determines in good faith that it has received a refund in respect of
any Covered Taxes with respect to which any Account Party has paid additional
amounts pursuant to this Section 7, the Bank shall promptly after the date of
such receipt pay over the amount of such refund to such Account Party (but only
to the extent of additional amounts paid by the Account Party under this Section
7 with respect to the Covered Taxes giving rise to such refund), net of all
reasonable expenses of the Bank (including additional Taxes attributable to such
refund, as determined in good faith by the Bank) and without interest (other
than interest, if any, paid by the relevant taxing authority with respect to
such refund). Any Account Party shall, upon demand, repay to the Bank any amount
paid over to such Account Party by the Bank in the event the Bank is required to
repay any portion of such refund to such taxing authority. If any Account Party
reasonably believes that any Covered Taxes were not correctly or legally
asserted, the Bank will use reasonable efforts to cooperate with such Account
Party (at Account Party's expense) to obtain a refund of such Covered Taxes,
which refund shall be returned to the Account Party to the extent provided in
this Section 7(a). Nothing in this Section 7 shall entitle any Account Party to
have access to the records of the Bank, including, without limitation, tax
returns.

     (b) To the extent it is legally entitled to do so, the Bank shall from time
to time, at the written request of any Account Party, provide to such Account
Party such form, certification or similar documentation, if any (each duly
completed, accurate and signed) as is required by any jurisdiction, in order to
obtain an exemption from, or reduced rate of, deduction, payment or withholding
of Covered Taxes to which the Bank is entitled pursuant to an applicable tax
treaty or other applicable law.

     (c) An assignee of the Bank or subsequent assignee shall not be entitled to
any greater gross-up payments under this Section 7 than such assignee's assignor
was entitled to immediately prior to such assignment (determined taking into
account the provisions of this Section 7) except to the extent that the
entitlement to greater payments resulted solely from a change in law formally
announced after the date on which such assignee became an assignee hereunder.

     (d) For purposes of this Agreement the following terms shall have the
following meanings, respectively:

     "Excluded Taxes" means, with respect to the Bank or any other recipient of
a payment from any Account Party hereunder, (a) any Taxes that are imposed as a
result of a connection the recipient of the payment has with the relevant
jurisdiction (other than a connection that is deemed to arise solely by reason
of both (i) the transactions contemplated by this Agreement and (ii) an Account
Party being organized or resident, maintaining an office or conducting business
in such jurisdiction), including without limitation any such Taxes imposed on
(or measured by) net income, net profits, branch profits or overall gross
receipts, (b) any Tax that is not imposed solely as a result of a change in law
formally announced after the date hereof and (c) any Tax that is attributable to
the recipient's failure to comply with Section 7(b) above.

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     "Covered Taxes" means all Taxes, other than Excluded Taxes, that are
imposed on the Bank with respect to any payment made by any Account Party
hereunder.

     "Tax" or "Taxes" means any present or future income, stamp or other tax,
levy, impost, duty, charge or withholding imposed, levied, collected, withheld
or assessed by any taxing authority (including any interest or penalties
attributable thereto).

     8. Should any of the following events (each an "Event of Default") occur
and be continuing: (a) the Account Parties fail to make payment when due of any
amount payable under this Agreement and such failure continues unremedied for at
least three (3) days; (b) any representation made in any financial statement or
in any certificate or other writing delivered to the Bank by or on behalf of any
Account Party in connection with this Agreement or a Letter of Credit is in any
material respect false or misleading when made; (c) an Account Party shall
default in the due performance or observance by it of any term, covenant or
agreement contained herein and such default shall continue unremedied for a
period of more than twenty (20) days; or (d) an event of default under and as
defined in the Syndicated Credit Agreement; then in each such event, the Bank
may terminate the Commitment and declare the obligations of the Account Parties
hereunder to be due and payable immediately, whereupon such obligations shall
become due and payable immediately, without presentment, demand, protest or
other notice of any kind, all of which are hereby waived by the Account Parties;
and in case of any event with respect to any Account Party described in clause
(g) or (h) of Article VIII of the Syndicated Credit Agreement, the Commitment
shall immediately terminate and the obligations of the Account Parties hereunder
shall automatically become due and payable, without presentment, demand, protest
or other notice of any kind, all of which are hereby waived by each Account
Party. If an Event of Default shall occur and be continuing, the Account Parties
shall pay to the Bank, on demand, for application to drawings under each Letter
of Credit the entire amount thereof which has not been drawn. Any amount so paid
which has not been drawn at the expiration of a Letter of Credit shall be repaid
to the appropriate Account Party, without interest, upon the payment in full of
all other amounts owing hereunder.

     9. Promptly after the occurrence of an Event of Default or an event which
with the giving of notice or the passage of time, or both, would constitute an
Event of Default, the Account Parties shall notify the Bank of such event,
together with a statement setting forth the actions being taken by the Account
Parties to remedy the same.

     10. Each Account Party hereby represents and warrants as to itself that (a)
it is duly organized, validly existing and in good standing under the laws of
the jurisdiction of its organization, has all requisite power and authority to
carry on its business as now conducted and, except where the failure to do so,
individually or in the aggregate, could not reasonably be expected to result in
a Material Adverse Effect (as such term is defined in the Syndicated Credit
Agreement), is qualified to do business in, and is in good standing in, every
jurisdiction where such qualification is required; (b) this Agreement has been
duly executed and delivered by such Account Party and constitutes a legal, valid
and binding obligation of such Account Party, enforceable against such Account
Party in accordance with its terms,

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except as such enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium, examination or similar laws of general applicability
affecting the enforcement of creditors' rights and the application of general
principles of equity (regardless of whether such enforceability is considered in
a proceeding in equity or at law); and (c) the execution, delivery, and
performance of this Agreement will not violate any provision of any existing law
or regulation binding on such Account Party, the violation of which would have a
Material Adverse Effect (as such term is defined in the Syndicated Credit
Agreement) on the business, operations, assets, or financial condition of such
Account Party.

     11. The Account Parties jointly and severally agree to pay all reasonable
out-of-pocket expenses incurred by the Bank, including the fees, charges and
disbursements of legal counsel, in connection with the enforcement or protection
of its rights in connection with this Agreement, including its rights under this
Section 11, or in connection with the Letters of Credit issued hereunder,
including in connection with any workout, restructuring or negotiations in
respect thereof.

     12. The Account Parties jointly and severally agree to indemnify the Bank,
its affiliates and each of their respective directors, officers, employees,
agents and advisors (each an "Indemnitee") against, and to hold each Indemnitee
harmless from, any and all losses, claims, damages, liabilities and related
expenses, including the fees, charges and disbursements of any counsel for any
Indemnitee (but not including Excluded Taxes), incurred by or asserted against
any Indemnitee arising out of, in connection with, or as a result of (a) the
execution or delivery of this Agreement or any agreement or instrument
contemplated hereby, the performance by the parties hereto of their respective
obligations hereunder or the consummation of any transactions contemplated
hereby, (b) any Letter of Credit or the use thereof (including any refusal by
the Bank to honor a demand for payment under a Letter of Credit if the documents
presented in connection with such demand do not strictly comply with the terms
of such Letter of Credit), (c) any actual or alleged presence or release of
Hazardous Materials (as such term is defined in the Syndicated Credit Agreement)
on or from any property owned or operated by any Account Party or any of its
Subsidiaries (as such term is defined in the Syndicated Credit Agreement), or
any Environmental Liability (as such term is defined in the Syndicated Credit
Agreement) related in any way to any Account Party or any of its Subsidiaries
(as such term is defined in the Syndicated Credit Agreement), or (d) any actual
or prospective claim, litigation, investigation or proceeding relating to any of
the foregoing, whether based on contract, tort or any other theory and
regardless of whether any Indemnitee is a party thereto; provided that such
indemnity shall not, as to any Indemnitee, be available to the extent that such
losses, claims, damages, liabilities or related expenses result from or arise
out of the gross negligence or willful misconduct of such Indemnitee.

     13. To the extent permitted by applicable law, no Account Party shall
assert, and each Account Party hereby waives, any claim against any Indemnitee,
on any theory of liability, for special, indirect, consequential or punitive
damages (as opposed to direct or actual damages) arising out of, in connection
with, or as a result of, this Agreement or any

                                      -6-
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agreement or instrument contemplated hereby, any transaction effected in
connection herewith and any Letter of Credit or the use of the proceeds thereof.

     14. Each Account Party hereby consents to the non-exclusive jurisdiction of
any court of record in the City of New York or of the United States District
Court for the Southern District of New York for the purpose of any suit, action,
proceeding or judgment relating to or arising out of this Agreement or a Letter
of Credit, and service of process by the Bank in any such suit, action,
proceeding or judgment may be made by mailing a copy thereof to such Account
Party at its address set forth in Section 20 below. The Account Party also
waives any claim that New York County or the Southern District of New York is an
inconvenient forum.

     15. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
NEW YORK LAW.

     16. If an Event of Default shall have occurred and be continuing, the Bank
is hereby authorized at any time and from time to time, to the fullest extent
permitted by law, to set off and apply any and all deposits (general or special,
time or demand, provisional or final) at any time held and other indebtedness at
any time owing by the Bank to or for the credit or the account of any Account
Party against any of and all the obligations of such Account Party now or
hereafter existing under this Agreement held by the Bank, irrespective of
whether or not the Bank shall have made any demand under this Agreement and
although such obligations may be unmatured. The rights of the Bank under this
Section 16 are in addition to other rights and remedies (including other rights
of setoff) which the Bank may have.

     17. Any articles, sections, clauses, provisions, terms and conditions of
the Syndicated Credit Agreement that are referenced herein (including any
related definitions, schedules and ancillary provisions) and any capitalized
terms used herein with reference to the Syndicated Credit Agreement (the
"Incorporated Terms"), shall be incorporated herein with the same meaning, force
and effect as if such Incorporated Terms were set forth in full as of the date
hereof without amendment (except for those changes or modifications to such
Incorporated Terms as may be necessary or appropriate in the Bank's reasonable
discretion to conform the Incorporated Terms to this Agreement). Each Account
Party agrees to notify the Bank promptly of any amendment or modification of or
change or waiver granted with respect to any Incorporated Term and, if the Bank
so requests by a written instrument, to execute and deliver an amendment to this
Agreement which incorporates such amendment, modification, change or waiver.

     18. No failure on the part of the Bank to exercise, and no delay in
exercising, any right, remedy or power hereunder shall operate as a waiver
thereof, nor shall any single or partial exercise by the Bank of any right,
remedy or power hereunder preclude any other or future exercise of any other
right, remedy or power. Each and every right, remedy and power hereby granted to
the Bank or allowed it by law or other agreement shall be cumulative and not
exclusive the one of any other and may be exercised by the Bank from time to
time.

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     19. The Bank shall provide the relevant Account Party with not less than
sixty (60) days prior written notice of its intent not to renew the term of a
Letter of Credit.

     20. All demands for payment, notices or other communications hereunder
shall be in writing (including communications by facsimile transmission) and
shall be addressed, if to the Bank, at 245 Park Avenue, New York, New York
10167, Attention: Letter of Credit Department, Fax No. [(212) 490-8087], and if
to the Account Parties, c/o XL Capital Ltd, at XL House, One Bermudiana Road,
Hamilton, HM 11 Bermuda, Attention: Mr. Roderick Gray, Fax No. (441) 296-6399,
or to such other address as such party may designate by notice to the other
parties.

     21. This Agreement shall be binding upon the Account Parties and their
successors, assigns, and legal representatives, and shall inure to the benefit
of, and be enforceable by, the Bank, its successors and assigns. Neither the
Bank nor any Account Party may assign any of its rights or obligations under
this Agreement without the prior written consent of the other, such consent not
to be unreasonably withheld.

     22. (a) EACH ACCOUNT PARTY AND THE BANK IRREVOCABLY WAIVES ITS RIGHT TO A
JURY TRIAL IN ANY ACTION OR PROCEEDING BASED UPON OR ARISING OUT OF THIS
AGREEMENT, A CREDIT OR ANY DEALINGS WITH ONE ANOTHER RELATING TO THE SUBJECT
MATTER OF THIS AGREEMENT. Each Account Party hereby irrevocably and
unconditionally submits, for itself and its property, to the nonexclusive
jurisdiction of the Supreme Court of the State of New York sitting in New York
County and of the United States District Court of the Southern District of New
York, and any appellate court from any thereof, in any action or proceeding
arising out of or relating to this Agreement, or for recognition or enforcement
of any judgment, and each of the parties hereto hereby irrevocably and
unconditionally agrees that all claims in respect of any such action or
proceeding may be heard and determined in such New York State or, to the extent
permitted by law, in such Federal court. Each of the parties hereto agrees that
a final judgment in any such action or proceeding shall be conclusive and may be
enforced in other jurisdictions by suit on the judgment or in any other manner
provided by law. Nothing in this Agreement shall affect any right that the Bank
may otherwise have to bring any action or proceeding relating to this Agreement
against any Account Party or its properties in the courts of any jurisdiction.

     (b) Each Account Party hereby irrevocably and unconditionally waives, to
the fullest extent it may legally and effectively do so, any objection which it
may now or hereafter have to the laying of venue of any suit, action or
proceeding arising out of or relating to this Agreement in any court referred to
in this Section. Each of the parties hereto hereby irrevocably waives, to the
fullest extent permitted by law, the defense of an inconvenient forum to the
maintenance of such action or proceeding in any such court.

     (c) By the execution and delivery of this Agreement, XL Capital Ltd, XL
Insurance (Bermuda) Ltd and XL Re Ltd acknowledge that they have by a separate
written instrument,

                                      -8-
<PAGE>

designated and appointed CT Corporation System, 111 Eighth Avenue, 13th floor,
New York, New York 10011 (or any successor entity thereto), as its authorized
agent upon which process may be served in any suit or proceeding arising out of
or relating to this Agreement that may be instituted in any federal or state
court in the State of New York. Each party to this Agreement irrevocably
consents to service of process in the manner provided for in Section 20 hereof.
Nothing in this Agreement will affect the right of any party to this Agreement
to serve process in any other manner permitted by law.

     (d) To the extent that any Account Party has or hereafter may acquire any
immunity from jurisdiction of any court or from any legal process (whether
through service of notice, attachment prior to judgment, attachment in aid of
execution or execution, on the ground of sovereignty or otherwise) with respect
to itself or its property, it hereby irrevocably waives, to the fullest extent
permitted by applicable law, such immunity in respect of its obligations under
this Agreement.

     23. This Agreement may be executed in any number of counterparts and by the
several parties hereto on separate counterparts, each of which when so executed
shall be an original, but all such separate counterparts shall together
constitute but one and the same agreement. The parties agree that all telecopied
or telefaxed execution copies and signatures thereto shall be duplicate
originals.

     24. This is an international credit transaction in which the obligations of
each Account Party to reimburse the Bank and to pay all fees and other expenses
hereunder shall be satisfied only in U.S. dollars ("Dollars"), and the
obligations of each Account Party under this Agreement to make payment to (or
for account of) the Bank in Dollars shall not be discharged or satisfied by any
tender or recovery pursuant to any judgment expressed in or converted into any
other currency except to the extent that such tender or recovery results in the
effective receipt by the Bank of the full amount of Dollars payable to the Bank
under this Agreement. If for the purpose of obtaining judgment in any court it
is necessary to convert a sum due hereunder in Dollars into another currency (in
this Section called the "judgment currency"), the rate of exchange that shall be
applied shall be that at which in accordance with normal banking procedures the
Bank could purchase such Dollars with the judgment currency on the business day
next preceding the day on which such judgment is rendered. The obligation of
each Account Party in respect of any such sum due from it to the Bank (in this
Section called an "Entitled Person") shall, notwithstanding the rate of exchange
actually applied in rendering such judgment, be discharged only to the extent
that on the business day following receipt by such Entitled Person of any sum
adjudged to be due hereunder in the judgment currency such Entitled Person may
in accordance with normal banking procedures purchase Dollars with the amount of
the judgment currency so adjudged to be due; and each Account Party hereby, as a
separate obligation and notwithstanding any such judgment, agrees to indemnify
such Entitled Person against, and to pay such Entitled Person on demand, in
Dollars, the amount (if any) by which the sum originally due to such Entitled
Person in Dollars hereunder exceeds the amount of the Dollars so purchased and
transferred.

                                      -9-
<PAGE>

     25. The Bank hereby notifies each Account Party that pursuant to the
requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into
law October 26, 2001)), the Bank is required to obtain, verify and record
information that identifies each Account Party, which information includes the
name and address of such Account Party and other information that will allow the
Bank to identify each Account Party in accordance with said Act.

     IN WITNESS WHEREOF, the Bank and the Account Parties have entered into this
Agreement as of the date first written above.

NATIONAL AUSTRALIA BANK LIMITED
(ABN 12 004 044 937), New York Branch

By:   /s/ Clinton M. Johnson
      -------------------------------
      Name:    Clinton M. Johnson
      Title:   Senior Vice President

XL CAPITAL LTD                              XL INSURANCE (BERMUDA)
                                                   LTD

By:   /s/ Simon Rich                        By:  /s/ Christopher A. Coelho
      --------------------------------           -------------------------------
      Name:    Simon Rich                        Name:   Christopher A. Coelho
      Title:   Senior Vice President &           Title:  Senior Vice-President &
               Controller                                Chief Financial Officer

XL AMERICA, INC.                            XL RE LTD

By:   /s/ Brian O' Hara                     By:  /s/ Derrick Irby
      --------------------------------           -------------------------------
      Name:    Brian O' Hara                     Name:   Derrick Irby
      Title:   Director                          Title:  Chief Financial Officer

                                      -10-
<PAGE>

                                                                       EXHIBIT A

                            [Form of L/C Application]

                                                             ____________, 200__

National Australia Bank Limited
245 Park Avenue
New York, New York 10167
Attention:  Manager of Letter of Credit Department

Ladies and Gentlemen:

     [           ] (the "Account Party") hereby requests National Australia Bank
Limited, New York Branch (the "Bank") to issue its irrevocable standby letter of
credit (the "Letter of Credit") substantially in the form attached hereto,
including:

     (1)      Name and address of beneficiary:   ________________________
     (2)      Principal amount:$_______________________
     (3)      Effective date:   _______________________
     (4)      Expiration date:  _______________________

     The Letter of Credit will be issued pursuant and subject to the Master
Standby Letter of Credit and Reimbursement Agreement dated September 30, 2005
(the "L/C Agreement") between the Bank, the Account Party and the other Account
Parties referenced therein.

     The Account Party represents and warrants to the Bank that (a) the Letter
of Credit and this request therefor have been duly authorized by all necessary
corporate action, (b) the principal amount of the Letter of Credit, when added
to the aggregate principal amount of all Letters of Credit issued and
outstanding as of the date hereof does not exceed the Commitment amount and (c)
no Event of Default (as defined in the L/C Agreement) or any other event which
with the giving of notice or passage of time, or both, would constitute an Event
of Default has occurred and is continuing or will result from the issuance of
such Letter of Credit.

     The Account Party agrees to pay letter of credit fees with respect to the
Letter of Credit at the times and in the amounts agreed to between the Account
Party and the Bank.

                          Very truly yours,
                          [                             ]

                          By___________________________
                            Name:
                            Title:

                                      -11-

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