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                                                                     EXHIBIT 3.5

                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                              UNDER SECTION 242 OF

                         THE GENERAL CORPORATION LAW OF

                              THE STATE OF DELAWARE

                                    * * * * *

          IESI NY Corporation, a corporation organized and existing under and by
virtue of the General Corporation Law of the State of Delaware.

          DOES HEREBY CERTIFY:

          FIRST:    That the Board of Directors of said corporation, by the
unanimous written consent of its members, filed with the minutes of the Board of
Directors, adopted a resolution proposing and declaring advisable the following
amendment to the Certificate of Incorporation of said corporation:

          RESOLVED, that the Certificate of Incorporation of IESI NY Corporation
          be amended by deleting Article Seventh in its entirety and renumbering
          Articles subsequent to said Article Seventh accordingly, including
          corresponding cross-references.

          SECOND:   That in lieu of a meeting and vote of stockholders, the
stockholders have given unanimous written consent to said amendment in
accordance with the provisions of Section 228 of the General Corporation Law of
the State of Delaware.

          THIRD:    That the aforesaid amendment was duly adopted in accordance
with the applicable provisions of Sections 242 and 228 of the General
Corporation Law of the State of Delaware.

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          IN WITNESS WHEREOF, the Corporation has caused this Certificate of
Amendment of Certificate of Incorporation to be signed by the undersigned, who
affirms and acknowledges, under penalties of perjury, that the execution hereof
is the act and deed of the corporation, and that the facts stated herein are
true, in accordance with the provisions of Sections 103 and 242 of the General
Corporation Law of the State of Delaware, on June 14, 1999.

                                         By: /s/ Jeffrey J. Keenan
                                             -----------------------------------
                                             Jeffrey J. Keenan
                                             Chairman

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                          CERTIFICATE OF INCORPORATION

                                       OF

                               IESI NY CORPORATION

          1.     The name of the corporation (the "Corporation") is:

          IESI NY CORPORATION

          2.     The address of its registered office in the State of Delaware
is 1209 Orange Street in the City of Wilmington, County of New Castle. The name
of its registered agent at such address is The Corporation Trust Company.

          3.     The nature of the business or purposes to be conducted or
promoted by the Corporation is to engage in any lawful act or activity for which
corporations may be organized under the General Corporation Law of the State of
Delaware.

          4.     The total number of shares of stock which the Corporation shall
have authority to issue is 1,000 shares of Common Stock, par value $.01 per
share.

          5.     The name and mailing address of the incorporator is as follows:

          Jeffrey J. Keenan
          IESI Holding Corporation
          c/o Seneca Management LLC
          81 Main Street, Suite 450
          White Plains, NY 10601-1771.

          6.     In furtherance and not in limitation of the powers conferred by
statute, the by-laws of the Corporation may be made, altered, amended or
repealed by the stockholders or by a majority of the entire board of directors.

          7.     Whenever a compromise or arrangement is proposed between this
Corporation and its creditors or any class of them and/or between this
Corporation and its stockholders or any class of them, any court of equitable
jurisdiction within the State of

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Delaware may, on the application in a summary way of this Corporation or of any
creditor or stockholder thereof or on the application of any receiver or
receivers appointed for this Corporation under the provisions of Section 291 of
Title 8 of the Delaware Code or on the application of trustees in dissolution or
of any receiver or receivers appointed for this Corporation under the provisions
of Section 279 of Title 8 of the Delaware Code, order a meeting of the creditors
or class of creditors, and/or of the stockholders or class of stockholders of
this Corporation, as the case may be, to be summoned in such manner as the said
court directs. If a majority in number representing three-fourths in value of
the creditors or class of creditors, and/or of the stockholders or class of
stockholders of this Corporation, as the case may be, agree to any compromise or
arrangement and to any reorganization of this Corporation as consequence of such
compromise or arrangement, the said compromise or arrangement and the said
reorganization shall, if sanctioned by the court to which the said application
has been made, be binding on all the creditors or class of creditors, and/or on
all stockholders or class of stockholders of this Corporation, as the case may
be, and also on this Corporation.

          8.     Elections of directors need not be by written ballot.

          9.     (a) The Corporation shall indemnify to the fullest extent
permitted under and in accordance with the laws of the State of Delaware any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative by reason of the fact that he is or
was a director, officer, employee or agent of the Corporation, or is or was
serving at the request of the Corporation as a director, officer, trustee,
employee or agent of or in any other capacity with another corporation,
partnership, joint venture, trust or other enterprise, against expenses
(including attorneys' fees), judgments, fines and amounts paid in settlement
actually

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and reasonably incurred by him in connection with such action, suit or
proceeding if he acted in good faith and in a manner he reasonably believed to
be in or not opposed to the best interests of the Corporation, and, with respect
to any criminal action or proceeding, had no reasonable cause to believe his
conduct was unlawful.

          (b)    Expenses incurred in defending a civil or criminal action,
suit or proceeding shall (in the case of any action, suit or proceeding against
a director of the Corporation) or may (in the case of any action, suit or
proceeding against an officer, trustee, employee or agent) be paid by the
Corporation in advance of the final disposition of such action, suit or
proceeding as authorized by the Board upon receipt of an undertaking by or on
behalf of the indemnified person to repay such amount if it shall ultimately be
determined that he is not entitled to be indemnified by the Corporation as
authorized in this Paragraph.

          (c)    The indemnification and other rights set forth in this
paragraph shall not be exclusive of any provisions with respect thereto in the
by-laws or any other contract or agreement between the Corporation and any
officer, director, employee or agent of the Corporation.

          (d)    Neither the amendment nor repeal of this paragraph 9,
subparagraph (a), (b) or (c), nor the adoption of any provision of this
Certificate of Incorporation inconsistent with paragraph 9, subparagraph (a),
(b) or (c), shall eliminate or reduce the effect of this paragraph 9,
subparagraphs (a), (b) and (c), in respect of any matter occurring before such
amendment, repeal or adoption of an inconsistent provision or in respect of any
cause of action, suit or claim relating to any such matter which would have
given rise to a right of indemnification or right to receive expenses pursuant
to this paragraph 9. subparagraph (a), (b) or (c), if such provision had not
been so amended or repealed or if a provision inconsistent therewith had not
been so adopted.

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          (e)    No director shall be personally liable to the Corporation or
any stockholder for monetary damages for breach of fiduciary duty as a director,
except for any matter in respect of which such director (A) shall be liable
under Section 174 of the General Corporation Law of the State of Delaware or any
amendment thereto or successor provision thereto, or (B) shall be liable by
reason that, in addition to any and all other requirements for liability, he:

          (i)    shall have breached his duty of loyalty to the Corporation or
its stockholders;

          (ii)   shall not have acted in good faith or, in failing to act, shall
not have acted in good faith;

          (iii)  shall have acted in a manner involving intentional misconduct
or a knowing violation of law or, in failing to act, shall have acted in a
manner involving intentional misconduct or a knowing violation of law; or

          (iv)   shall have derived an improper personal benefit.

          If the General Corporation Law of the State of Delaware is amended
after June 11, 1997 to authorize corporate action further eliminating or
limiting the personal liability of directors, then the liability of a director
of the Corporation shall be eliminated or limited to the fullest extent
permitted by the General Corporation Law of the State of Delaware, as so
amended.

          THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a Corporation pursuant to the General Corporation Law of the
State of Delaware makes this Certificate, hereby declaring and certifying that
this is his act and deed and the facts herein stated are true and, accordingly,
has hereunto set his hand this 13th day of June, 1997,

                                            /s/ Jeffrey J. Keenan
                                            ------------------------------------
                                            Jeffrey J. Keenan

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