SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D

                   Under the Securities Exchange Act of 1934*

                            USA Waste Services, Inc.

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                                (Name of Issuer)

                     Common Stock, par value $.01 per share
                                        
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                         (Title of Class of Securities)

                                   902917103

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                                 (CUSIP Number)

                                 Lorne D. Bain
                                 Sanifill, Inc.
                         2777 Allen Parkway, Suite 700
                           Houston, Texas 77019-2155
                                 (713) 942-6200

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            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                 June 22, 1996
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            (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [_].

Check the following box if a fee is being paid with this statement [x].  (A fee
is not required only if the reporting person: (1) has a previous statement on
file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of less than five percent of such class.
See Rule 13d-7.)

Note: Six copies of this statement, including all exhibits, should be filed with
the Commission.  See Rule 13d-1(a) for other parties to whom copies are to be
sent.

*The remainder of this cover page should be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                              Page 1 of 16 Pages

 
CUSIP No. 902917103

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(1)  Names of Reporting Persons S.S. or I.R.S. Identification Nos. of Above
     Persons

     Sanifill, Inc.
     76-0279492

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(2)  Check the Appropriate Box if a Member of a Group
                                                          (a)  [_]
                                                          (b)  [x]

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(3)  SEC Use Only

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(4)  Source of Funds

     Not Applicable

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(5)  Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d)
     or 2(e)
                                                               [ ]

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(6)  Citizenship or Place of Organization
Delaware - -------------------------------------------------------------------------------- Number of (7) Sole Voting Power -0- Shares Bene- _____________________________________________________ ficially (8) Shared Voting Power 19,190,437 Shares Owned by _____________________________________________________ Each Report- (9) Sole Dispositive Power -0- ing Person _____________________________________________________ With (10) Shared Dispositive Power -0-
- -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 19,190,437 Shares - -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares [x] - -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 21.7% - -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) CO Page 2 of 16 Pages ITEM 1. SECURITY AND ISSUER The class of securities to which this statement relates is common stock, par value $.01 per share ("Company Common Stock"), of USA Waste Services, Inc., a Delaware corporation (the "Company"). The address of the principal executive offices of the Company is 5400 LBJ Freeway, Suite 300 - Tower One, Dallas, Texas 75240. ITEM 2. IDENTITY AND BACKGROUND This statement on Schedule 13D is filed by Sanifill, Inc., a Delaware corporation ("Sanifill"). The principal business of Sanifill is owning and operating nonhazardous waste disposal, treatment, collection, transfer and recycling businesses and complementary operations. Information with respect to the executive officers and directors of Sanifill, including name, business address, present principal occupation or employment and the organization in which such employment is conducted, and their citizenship is listed on the schedule attached hereto as Schedule I, which is incorporated in this Schedule 13D by reference. The address of the principal business and office of Sanifill is 2777 Allen Parkway, Suite 700, Houston, Texas 77019. During the last five years, neither Sanifill nor, to the best of Sanifill's knowledge, any executive officer or director of Sanifill has been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors) or has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Page 3 of 16 Pages ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION No funds were used in connection with entering into the Irrevocable Proxies, as defined in Item 4 of this Schedule 13D. ITEM 4. PURPOSE OF TRANSACTION On June 22, 1996, the Company, Quatro Acquisition Corp., a Delaware corporation and a wholly owned subsidiary of the Company ("Subsidiary"), and Sanifill entered into an Agreement and Plan of Merger (the "Merger Agreement") pursuant to which Subsidiary would be merged (the "Merger") with and into Sanifill and each outstanding share of common stock of Sanifill, par value $.01 per share ("Sanifill Common Stock"), would be converted into a right to receive 1.7 shares of Company Common Stock. The consummation of the Merger is subject to a number of conditions set forth in the Merger Agreement, including approval of the respective stockholders of Sanifill and the Company and approvals of regulatory authorities. The Company and Sanifill have entered into a Confidentiality Agreement, dated June 17, 1996 (the "Confidentiality Agreement") whereby Sanifill has agreed to keep all confidential information with respect to the Company confidential and not to disclose or reveal any such information to any third parties, subject to certain exceptions. In addition, the Confidentiality Agreement prohibits Sanifill and its affiliates, for a period of two years, from (i) acquiring or offering to acquire beneficial ownership of more than 1% of the voting securities of the Company; (ii) soliciting or encouraging others to solicit proxies with respect to the election of directors of the Company or otherwise for the purpose of acquiring control of the Company, or communicating with or seeking to advise or influence any entity or person with respect to the Company's voting securities; (iii) making a public proposal to the Company concerning a merger or consolidation with, or Page 4 of 16 Pages acquisition of, the Company or taking any action that would require the Company to make certain public announcements; (iv) otherwise joining or forming a group for the purpose of acquiring, holding, voting or disposing of any voting securities of the Company or encouraging, advising or providing certain assistance to others to do any of the foregoing; or (v) requesting that the board of directors of the Company waive any of the foregoing provisions. The Confidentiality Agreement includes provisions stating that if (x) a third party, other than a third party who is an affiliate or is acting in concert with Sanifill, (1) commences a tender offer for 20% or more of the outstanding shares of the Company's common stock or (2) acquires beneficial ownership of more than 20% of the outstanding shares of the Company's common stock or (y) the Company agrees to a merger, consolidation or other acquisition of itself or an acquisition of all or substantially all of its assets, then provisions (i) through (v) above shall lapse and have no effect. Pursuant to seven Agreements and Irrevocable Proxies with each of John E. Drury, Donald F. Moorehead, Jr., David Sutherland-Yoest, Kosti Shirvanian, John G. Rangos, Sr., Alexander W. Rangos and John Rangos Development Corporation, Inc. (collectively, the "Stockholders" and individually, a "Stockholder"), each such agreement dated June 22, 1996 (collectively, the "Irrevocable Proxies" and individually, an "Irrevocable Proxy"), among Sanifill, the Company and each Stockholder, each Stockholder has granted to Sanifill, with respect to all shares of Company Common Stock beneficially owned by such Stockholder currently and all shares of any other class of capital stock of the Company presently or at any future time owned beneficially or of record by such Stockholder, including any and all securities having voting rights issued or issuable in respect thereof, which such Stockholder is entitled to vote (the "Subject Shares"), an irrevocable proxy to vote the Subject Shares (i) to adopt or approve the Merger Agreement and the Page 5 of 16 Pages Merger and any transactions contemplated thereby and (ii) to reject any proposal made in opposition to consummation of the Merger or any other action or transaction intended to frustrate or impair the right or ability of the Company, the Subsidiary or Sanifill to consummate the merger. Moreover, each of Messrs. Drury, Moorehead, Sutherland-Yoest and Shirvanian, with respect to such Stockholder's Subject Shares; Mr. John Rangos, with respect to 7,200,000 shares of such Stockholder's Subject Shares; Mr. Alexander Rangos, with respect to 600,000 shares of such Stockholder's Subject Shares; and John Rangos Development Corporation, Inc., with respect to 1,200,000 shares of such Stockholder's Subject Shares, agrees that, at any time prior to the termination of the Irrevocable Proxy or until such Stockholder has satisfied certain conditions, such Stockholder will not sell, transfer, assign, pledge, hypothecate, cause to be redeemed or otherwise dispose of any of such Subject Shares, or grant any proxy, power-of-attorney or other authorization or interest in or with respect to any of such Subject Shares, or deposit any of such Subject Shares into a voting trust or enter into a voting agreement or arrangement with respect to any of such Subject Shares. The Irrevocable Proxies terminate on the earliest of (i) the Effective Time, as defined in the Merger Agreement, (ii) the date of termination of the Merger Agreement in accordance with its terms or (iii) the giving of written termination notice by Sanifill. Sanifill entered into the Irrevocable Proxies and thereby acquired shared voting power over the Subject Shares, to which this Schedule 13D relates, as an inducement to enter into and consummate the transactions contemplated by the Merger Agreement. As part of the Merger Agreement, Rodney R. Proto, President, Chief Operating Officer and Director of Sanifill, will assume these positions at the Company. Mr. Proto and two designees from Sanifill's Board of Directors will join the Company's Board of Directors, which will remain a twelve-person board. Moreover, the Company will move its headquarters to Houston, Texas. Page 6 of 16 Pages The filing of this Statement shall not be construed as an admission by Sanifill that, for purposes of Sections 13(d) and 13(g) of the Act, it is the beneficial owner of the Subject Shares to which this Statement on Schedule 13D relates. Reference is hereby made to Articles II and III of the Merger Agreement for a description of other transactions or events of the type described in Items (a) through (j) of the instructions to Item 4 of Schedule 13D. Except as set forth above, Sanifill has no present plans or proposals that relate to or would result in any of the actions described in subparagraphs (a) through (h) of Item 4 of Schedule 13D. The foregoing response to this Item 4 is qualified in its entirety by reference to the Merger Agreement, the full text of which is filed as Exhibit 1 hereto and incorporated herein by reference; the Irrevocable Proxies, the full text of each of which is filed as Exhibits 2 to 8 hereto and incorporated herein by reference; and the Confidentiality Agreement, the full text of which is filed as Exhibit 9 hereto and incorporated herein by reference. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER The Company represented in the Merger Agreement that it had outstanding as of June 15, 1996 an aggregate of 88,330,623 shares of Company Common Stock. The number of outstanding shares of Company Common Stock as to which Sanifill shares voting power is 19,190,437 (or approximately 21.7% of the class of such securities), which includes (i) 1,054,938 shares (or approximately 1.9% of the class of such securities) subject to Mr. Drury's Irrevocable Proxy, (ii) 1,650,121 shares (or approximately 1.9% of the class of such securities) subject to Mr. Moorehead's Irrevocable Proxy, (iii) 235,984 shares (or approximately 0.3% of the class of such securities) subject to Mr. Sutherland-Yoest's Irrevocable Proxy, (iv) 6,714,061 shares (or Page 7 of 16 Pages approximately 7.6% of the class of such securities) subject to Mr. Shirvanian's Irrevocable Proxy, (v) 7,663,911 shares (or approximately 8.7% of the class of such securities) subject to Mr. John Rangos's Irrevocable Proxy, (vi) 661,414 shares (or approximately 0.7% of the class of such securities) subject to Mr. Alexander Rangos's Irrevocable Proxy, and (vii) 1,210,008 shares (or approximately 1.4% of the class of such securities) subject to the Irrevocable Proxy of John Rangos Development Corporation, Inc. The Company could be deemed to share voting power to an additional 3,636,546 shares (or approximately 4.1% of the class of such securities) of which the Stockholders have beneficial ownership. Such shares include (i) 435,000 shares issuable pursuant to options exercisable by Mr. Drury within 60 days and 5,176 shares owned by Mr. Drury's spouse; (ii) 369,000 shares issuable pursuant to options exercisable by Mr. Moorehead within 60 days and 228,632 shares owned by Mr. Moorehead's spouse and children; (iii) 179,029 shares issuable pursuant to options exercisable by Mr. Sutherland-Yoest within 60 days and 2,000 shares owned by Mr. Sutherland-Yoest's daughter; (iv) 80,709 shares issuable pursuant to options exercisable by Mr. Alexander Rangos within 60 days; and (v) 2,337,000 shares issuable pursuant to options exercisable by Mr. Shirvanian within 60 days. Mr. Larry Martin, Vice Chairman of the Board and Director of Sanifill, is the beneficial owner of and has the sole right to vote and dispose of 53,333 shares of Company Common Stock (or approximately 0.1% of the class of such securities). Mr. Proto is the beneficial owner of and has the sole right to vote and dispose of 1,416 shares of Company Common Stock (or approximately .001% of the class of such securities). Page 8 of 16 Pages Except for the 54,749 shares of Company Common Stock held by Messrs. Martin and Proto, which were acquired solely for investment purposes, beneficial ownership of the 19,190,437 shares of Company Common Stock was acquired as described in Item 4, although Sanifill does not admit that, for purposes of Sections 13(d) and 13(g) of the Act, it is the beneficial owner of such shares. To the best of Sanifill's knowledge and except as to the shares of Company Common Stock held by Messrs. Martin and Proto, the persons listed on Schedule I in response to Item 2 do not beneficially own any shares of Company Common Stock. The applicable information required by Item 2 with respect to the Stockholders is attached hereto as Schedule II. Except as set forth in this Schedule 13D, to the best of Sanifill's knowledge, neither Sanifill nor the persons listed in Schedule I, including Messrs. Martin and Proto, have effected any transaction in Company Common Stock during the past sixty days. With respect to the Subject Shares, each Stockholder has the right to receive dividends. The information in Item 4 relating to the right of each Stockholder to dispose or to direct the disposition of the Subject Shares is incorporated herein by reference. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER The responses to Item 2, Item 3 and Item 4, the Merger Agreement, the Confidentiality Agreements and the Irrevocable Proxies are incorporated herein by reference. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS. *Exhibit 1 Agreement and Plan of Merger, dated June 22, 1996, by and among USA Waste Services, Inc., Quatro Acquisition Corp. and Sanifill, Inc. (Exhibit 99.2 of the Sanifill, Inc. Current Report on Form 8-K filed on June 25, 1996 (File No. 1-10490) is incorporated by reference). Page 9 of 16 Pages Exhibit 2 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. John E. Drury. Exhibit 3 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. Donald Moorehead, Jr. Exhibit 4 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. David Sutherland-Yoest. Exhibit 5 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. Kosti Shirvanian. Exhibit 6 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. John Rangos, Sr. Exhibit 7 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. Alexander W. Rangos. Exhibit 8 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and John Rangos Development Corporation, Inc. Exhibit 9 Confidentiality Agreement, dated June 17, 1996, between USA Waste Services, Inc., as the Protected Party, and Sanifill, Inc., as the Recipient. - ----------------------- * Incorporated by reference as indicated. Page 10 of 16 Pages After reasonable inquiry and to the best of its knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct. Date: July 2, 1996 SANIFILL, INC. By: /s/ H. STEVEN WALTON ---------------------------------------------- H. Steven Walton Vice President and General Counsel Page 11 of 16 Pages SCHEDULE I DIRECTORS AND EXECUTIVE OFFICERS OF SANIFILL, INC. For each director and executive officer of Sanifill, the following table sets forth the name, business address and present principal occupation or employment and the organization in which such employment is conducted. Unless otherwise indicated below, each such person is a citizen of the United States of America, the business address of each such person is c/o Sanifill, Inc., 2777 Allen Parkway, Suite 700, Houston, Texas 77019-2155, and each listed position is with Sanifill.
PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT; NAME BUSINESS ADDRESS - ---- ---------------------------------------------- Lorne D. Bain Chairman of the Board, Chief Executive Officer and Director. Larry J. Martin Vice Chairman of the Board and Director. Rodney R. Proto President, Chief Operating Officer and Director. Ralph F. Cox Director. Mr. Cox is a management consultant. His business address is 2401 Fountainview, Suite 910, Houston, Texas 77057. He serves as a director of Bonneville Pacific Corporation, an independent power company, of Daniel Industries, Inc., which manufactures oil and gas measurement and flow control equipment, of Rio Grande, Inc., a petroleum exploration and production company, and of CH2M Hill, a consulting engineering firm. Mr. Cox also serves as an Independent Trustee for The Fidelity Group of Funds. Robert G. Jones Director. Mr. Jones is a First Vice President/Investments of Prudential Securities Incorporated, One Lake Shore Drive, # 1500, Lake Charles, Louisiana 70629. Raymond C. Loehr Director. Dr. Loehr is a Professor of Civil Engineering in the Environmental and Water Resources Engineering Program at The University of Texas, where he is the head of the Environmental Solutions Program. His business address is Civil Engineering Department, 9.102 ECJ Hall, University of Texas at Austin, Austin, Texas 78712.
Page 12 of 16 Pages William J. Lynch Director. Mr. Lynch is a Managing Director of Capstone Partners, LLC, a venture capital firm. His business address is 1155 Avenue of the Americas, Suite 2800, New York, New York 10036. William J. Razzouk Director. Until June 21, 1996, Mr. Razzouk was the President of America Online, Inc. Alfred C. Warrington, IV Director. Since June 1992, Mr. Warrington has served as Vice Chairman of House of Cheatham, Inc., a company that manufactures and markets health and beauty aids. J. Chris Brewster Vice President and Chief Financial Officer. H. Steven Walton Vice President--Government Affairs, General Counsel and Secretary. Charles E. Williams Vice President--Environmental Engineering. Page 13 of 16 Pages SCHEDULE II STOCKHOLDERS For each Stockholder, as defined in Item 4, other than John Rangos Development Corporation, Inc., the following table sets forth the name, business address and present principal occupation or employment and the organization in which such employment is conducted. For John Rangos Development Corporation, Inc., the table sets forth the state or other place of its organization, its principal business, and the address of its principal business and office. The table was prepared based on information provided by the Company in the Company's Joint Proxy Statement and Prospectus, dated April 2, 1996. Unless otherwise indicated below, each Stockholder is a citizen of the United States of America, the business address of each such Stockholder is c/o USA Waste Services, Inc., 5400 LBJ Freeway, Suite 300 - Tower One, Dallas, Texas 75240, and each listed position is with the Company. To Sanifill's knowledge and unless otherwise indicated below, no Stockholder has, during the last five years, been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors) or has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT; NAME BUSINESS ADDRESS - ---- ---------------------------------------------- John E. Drury Chairman of the Board, Chief Executive Officer and Director of the Company. Donald F. Moorehead, Jr. Vice Chairman of the Board and Director of the Company. David Sutherland-Yoest President and Director of the Company. John G. Rangos, Sr. Director of the Company. Mr. Rangos is currently retired. His address is c/o USA Waste Services, Inc., 10700 Frankstown Road, Pittsburgh, Pennsylvania 15235. In connection with the settlement of the investigation by the Securities and Exchange Commission (the "Commission") with respect to the accounting method and the accuracy of the financial statements of Chambers Development Company, Inc. ("Chambers"), of which Mr. Rangos was Chairman and Chief Executive Officer, on May 9, 1995, the Commission instituted administrative proceedings against Mr. Rangos and three other individuals who had been or were at that time
Page 14 of 16 Pages officers of Chambers. The Commission found, inter alia, that Mr. Rangos was a cause of Chambers's violations of the reporting, internal controls and record-keeping provisions of the Act. Mr. Rangos consented to the issuance of a cease and desist order without admitting or denying the Commission's findings. Alexander Rangos Vice Chairman of the Board and Director of the Company. John Rangos Development The state of organization of John Rangos Corporation, Inc. Development Corporation, Inc. is Pennsylvania. Its principal business is as a holding company. The address of its principal office is 10700 Frankstown Road, Pittsburgh, Pennsylvania 15235. Kosti Shirvanian Director. Mr. Shirvanian is the Chairman of the Board of Directors, President and Chief Executive Officer of Western Waste Industries, 21061 S. Western Avenue, Torrance, California 90501. Western Waste Industries is a wholly owned subsidiary of the Company. Page 15 of 16 Pages EXHIBIT INDEX *Exhibit 1 Agreement and Plan of Merger, dated June 22, 1996, by and among USA Waste Services, Inc., Quatro Acquisition Corp. and Sanifill, Inc. (Exhibit 99.2 of the Sanifill, Inc. Current Report on Form 8-K filed on June 25, 1996 (File No. 1-10490) is incorporated by reference). Exhibit 2 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. John E. Drury. Exhibit 3 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. Donald Moorehead, Jr. Exhibit 4 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. David Sutherland-Yoest. Exhibit 5 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. Kosti Shirvanian. Exhibit 6 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. John Rangos, Sr. Exhibit 7 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and Mr. Alexander W. Rangos. Exhibit 8 Agreement and Irrevocable Proxy, dated June 22, 1996, among USA Waste Services, Inc., Sanifill, Inc. and John Rangos Development Corporation, Inc. Exhibit 9 Confidentiality Agreement, dated June 17, 1996, between USA Waste Services, Inc., as the Protected Party, and Sanifill, Inc., as the Recipient. - --------------------- * Incorporated by reference as indicated. Page 16 of 16 Pages

 
                                   EXHIBIT 2

                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------


     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and John E. Drury (the
"Stockholder" and, together with Parent and the Company, the "Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement; and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being collectively referred to as the "Shares"), and to represent
and otherwise act as the Stockholder could

 
act, in the same manner and with the same effect as if the Stockholder were
personally present, at any annual, special or other meeting of the stockholders
of Parent, and at any adjournment thereof (a "Meeting"), or pursuant to any
written consent in lieu of meeting or otherwise; provided, however, that any
such vote or consent in lieu thereof or any other action so taken shall be
solely for the purposes of (i) adopting and approving the Merger and the Merger
Agreement and any transactions contemplated thereby or (ii) rejecting any
proposal made in opposition to consummation of the Merger or any other action or
transaction which is intended to frustrate or impair the right or ability of
Parent, the Subsidiary or the Company to consummate the Merger.  Such attorneys
and proxies are hereby authorized to vote the Shares in accordance with the
terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Shares, or grant any proxy, power-of-attorney or other authorization or interest
in or with respect to any of the Shares, or deposit any of the Shares into a
voting trust or enter into a voting agreement or arrangement with respect to any
of the Shares unless and until the Stockholder shall have (i) taken all actions
(including, without limitation, the endorsement of a legend on the certificates
evidencing such Shares) reasonably necessary to ensure that such Shares shall at
all times be subject to all the restrictions, covenants and limitations imposed
by this Agreement and (ii) caused any transferee or pledgee of such Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

     (a) the Stockholder has full power and authority to enter into this
Agreement and to grant the Proxy, and to perform the Stockholder's obligations
hereunder;

                                       2

 
     (b) this Agreement has been duly executed and delivered by, and constitutes
a valid and binding obligation of, the Stockholder;

     (c) as of the date hereof, the issued and outstanding Shares consist of
that number of shares of Parent Common Stock beneficially owned by the
Stockholder which is set forth opposite the name of the Stockholder on the
signature page hereof;

     (d) the Shares are all of the securities of Parent owned beneficially or of
record by the Stockholder on the date hereof which are issued and outstanding;

     (e) the Stockholder owns the Shares free and clear of all liens, charges,
claims, encumbrances and security interests of any nature whatsoever;

     (f) the Stockholder has the present power and right to vote all of the
Shares which are issued and outstanding;

     (g) except as provided herein, the Stockholder has not (i) granted any
proxy, power-of-attorney or other authorization or interest with respect to any
of such Shares, (ii) deposited any of the Shares into a voting trust or (iii)
entered into any voting agreement or other arrangement with respect to the
voting of any of the Shares; and

     (h) the execution and delivery of this Agreement by the Stockholder and the
consummation by the Stockholder of the transactions contemplated hereby do not
require the consent, approval or authorization of, or filing with, any person or
public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE

                                       3

 
STOCKHOLDER AGREES THAT THE PROXY AND ALL OTHER POWER AND AUTHORITY INTENDED TO
BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT IN LAW TO SUPPORT AN
IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9 ABOVE, SHALL NOT BE
REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY LACK OF APPROPRIATE
POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:          /s/   EARL E. DEFRATES
                                  -------------------------------
                                      Name: Earl E. Defrates
                                      Title:   Executive VP & CFO


                         SANIFILL, INC.


                         By:          /s/   RODNEY R. PROTO
                                     -----------------------------
                                      Name: Rodney R. Proto
                                      Title:   President


                         STOCKHOLDER

 
                                      /s/     JOHN E. DRURY
                                      ----------------------------
                                      Printed Name:   John E. Drury
                                      Number of Shares:   1,054,938

                                       5

 
                                   EXHIBIT 3

                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------


     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and Donald Moorehead,
Jr. (the "Stockholder" and, together with Parent and the Company, the
"Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement; and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being collectively referred to as the "Shares"), and to represent
and otherwise act as the Stockholder could

 
act, in the same manner and with the same effect as if the Stockholder were
personally present, at any annual, special or other meeting of the stockholders
of Parent, and at any adjournment thereof (a "Meeting"), or pursuant to any
written consent in lieu of meeting or otherwise; provided, however, that any
such vote or consent in lieu thereof or any other action so taken shall be
solely for the purposes of (i) adopting and approving the Merger and the Merger
Agreement and any transactions contemplated thereby or (ii) rejecting any
proposal made in opposition to consummation of the Merger or any other action or
transaction which is intended to frustrate or impair the right or ability of
Parent, the Subsidiary or the Company to consummate the Merger.  Such attorneys
and proxies are hereby authorized to vote the Shares in accordance with the
terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Shares, or grant any proxy, power-of-attorney or other authorization or interest
in or with respect to any of the Shares, or deposit any of the Shares into a
voting trust or enter into a voting agreement or arrangement with respect to any
of the Shares unless and until the Stockholder shall have (i) taken all actions
(including, without limitation, the endorsement of a legend on the certificates
evidencing such Shares) reasonably necessary to ensure that such Shares shall at
all times be subject to all the restrictions, covenants and limitations imposed
by this Agreement and (ii) caused any transferee or pledgee of such Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

     (a) the Stockholder has full power and authority to enter into this
Agreement and to grant the Proxy, and to perform the Stockholder's obligations
hereunder;

                                       2

 
     (b) this Agreement has been duly executed and delivered by, and constitutes
a valid and binding obligation of, the Stockholder;

     (c) as of the date hereof, the issued and outstanding Shares consist of
that number of shares of Parent Common Stock beneficially owned by the
Stockholder which is set forth opposite the name of the Stockholder on the
signature page hereof;

     (d) the Shares are all of the securities of Parent owned beneficially or of
record by the Stockholder on the date hereof which are issued and outstanding;

     (e) the Stockholder owns the Shares free and clear of all liens, charges,
claims, encumbrances and security interests of any nature whatsoever;

     (f) the Stockholder has the present power and right to vote all of the
Shares which are issued and outstanding;

     (g) except as provided herein, the Stockholder has not (i) granted any
proxy, power-of-attorney or other authorization or interest with respect to any
of such Shares, (ii) deposited any of the Shares into a voting trust or (iii)
entered into any voting agreement or other arrangement with respect to the
voting of any of the Shares; and

     (h) the execution and delivery of this Agreement by the Stockholder and the
consummation by the Stockholder of the transactions contemplated hereby do not
require the consent, approval or authorization of, or filing with, any person or
public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE

                                       3

 
STOCKHOLDER AGREES THAT THE PROXY AND ALL OTHER POWER AND AUTHORITY INTENDED TO
BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT IN LAW TO SUPPORT AN
IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9 ABOVE, SHALL NOT BE
REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY LACK OF APPROPRIATE
POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:          /s/ EARL E. DEFRATES
                                  -------------------------------
                                      Name: Earl E. Defrates
                                      Title:   Executive VP & CFO


                         SANIFILL, INC.


                         By:          /s/ RODNEY R. PROTO
                                     -----------------------------
                                      Name: Rodney R. Proto
                                      Title:   President


                         STOCKHOLDER

 
                                      /s/ DONALD MOOREHEAD, JR. 
                                      -----------------------------
                                      Printed Name:   Donald Moorehead, Jr.
                                      Number of Shares:   1,650,121

                                       5

 
                                   EXHIBIT 4

                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------


     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and David Sutherland-
Yoest (the "Stockholder" and, together with Parent and the Company, the
"Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement; and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being collectively referred to as the "Shares"), and to represent
and otherwise act as the Stockholder could

 
act, in the same manner and with the same effect as if the Stockholder were
personally present, at any annual, special or other meeting of the stockholders
of Parent, and at any adjournment thereof (a "Meeting"), or pursuant to any
written consent in lieu of meeting or otherwise; provided, however, that any
such vote or consent in lieu thereof or any other action so taken shall be
solely for the purposes of (i) adopting and approving the Merger and the Merger
Agreement and any transactions contemplated thereby or (ii) rejecting any
proposal made in opposition to consummation of the Merger or any other action or
transaction which is intended to frustrate or impair the right or ability of
Parent, the Subsidiary or the Company to consummate the Merger.  Such attorneys
and proxies are hereby authorized to vote the Shares in accordance with the
terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Shares, or grant any proxy, power-of-attorney or other authorization or interest
in or with respect to any of the Shares, or deposit any of the Shares into a
voting trust or enter into a voting agreement or arrangement with respect to any
of the Shares unless and until the Stockholder shall have (i) taken all actions
(including, without limitation, the endorsement of a legend on the certificates
evidencing such Shares) reasonably necessary to ensure that such Shares shall at
all times be subject to all the restrictions, covenants and limitations imposed
by this Agreement and (ii) caused any transferee or pledgee of such Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

         (a) the Stockholder has full power and authority to enter into this
     Agreement and to grant the Proxy, and to perform the Stockholder's
     obligations hereunder;

                                       2

 
         (b) this Agreement has been duly executed and delivered by, and
    constitutes a valid and binding obligation of, the Stockholder;

         (c) as of the date hereof, the issued and outstanding Shares consist of
    that number of shares of Parent Common Stock beneficially owned by the
    Stockholder which is set forth opposite the name of the Stockholder on the
    signature page hereof;

         (d) the Shares are all of the securities of Parent owned beneficially
    or of record by the Stockholder on the date hereof which are issued and
    outstanding;

         (e) the Stockholder owns the Shares free and clear of all liens,
    charges, claims, encumbrances and security interests of any nature
    whatsoever;

         (f) the Stockholder has the present power and right to vote all of the
    Shares which are issued and outstanding;

         (g) except as provided herein, the Stockholder has not (i) granted any
    proxy, power-of-attorney or other authorization or interest with respect to
    any of such Shares, (ii) deposited any of the Shares into a voting trust or
    (iii) entered into any voting agreement or other arrangement with respect to
    the voting of any of the Shares; and

         (h) the execution and delivery of this Agreement by the Stockholder and
    the consummation by the Stockholder of the transactions contemplated hereby
    do not require the consent, approval or authorization of, or filing with,
    any person or public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE

                                       3

 
STOCKHOLDER AGREES THAT THE PROXY AND ALL OTHER POWER AND AUTHORITY INTENDED TO
BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT IN LAW TO SUPPORT AN
IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9 ABOVE, SHALL NOT BE
REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY LACK OF APPROPRIATE
POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:       /s/   EARL E. DEFRATES
                                  -------------------------------
                                  Name:    Earl E. Defrates
                                  Title:   Executive VP & CFO


                         SANIFILL, INC.


                         By:       /s/   RODNEY R. PROTO
                                  -----------------------------
                                  Name:    Rodney R. Proto
                                  Title:   President


                         STOCKHOLDER

 
                                   /s/   DAVID SUTHERLAND-YOEST
                                  -----------------------------
                                  Printed Name:   David Sutherland-Yoest
                                  Number of Shares:   270,984

                                       5

 
                                  EXHIBIT 5
 
                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------

     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and Kosti Shirvanian
(the "Stockholder" and, together with Parent and the Company, the "Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement; and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being collectively referred to as the "Shares"), and to represent
and otherwise act as the Stockholder could

 
act, in the same manner and with the same effect as if the Stockholder were
personally present, at any annual, special or other meeting of the stockholders
of Parent, and at any adjournment thereof (a "Meeting"), or pursuant to any
written consent in lieu of meeting or otherwise; provided, however, that any
such vote or consent in lieu thereof or any other action so taken shall be
solely for the purposes of (i) adopting and approving the Merger and the Merger
Agreement and any transactions contemplated thereby or (ii) rejecting any
proposal made in opposition to consummation of the Merger or any other action or
transaction which is intended to frustrate or impair the right or ability of
Parent, the Subsidiary or the Company to consummate the Merger.  Such attorneys
and proxies are hereby authorized to vote the Shares in accordance with the
terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Shares, or grant any proxy, power-of-attorney or other authorization or interest
in or with respect to any of the Shares, or deposit any of the Shares into a
voting trust or enter into a voting agreement or arrangement with respect to any
of the Shares unless and until the Stockholder shall have (i) taken all actions
(including, without limitation, the endorsement of a legend on the certificates
evidencing such Shares) reasonably necessary to ensure that such Shares shall at
all times be subject to all the restrictions, covenants and limitations imposed
by this Agreement and (ii) caused any transferee or pledgee of such Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

     (a) the Stockholder has full power and authority to enter into this
Agreement and to grant the Proxy, and to perform the Stockholder's obligations
hereunder;

                                       2

 
     (b) this Agreement has been duly executed and delivered by, and constitutes
a valid and binding obligation of, the Stockholder;

     (c) as of the date hereof, the issued and outstanding Shares consist of
that number of shares of Parent Common Stock beneficially owned by the
Stockholder which is set forth opposite the name of the Stockholder on the
signature page hereof;

     (d) the Shares are all of the securities of Parent owned beneficially or of
record by the Stockholder on the date hereof which are issued and outstanding;

     (e) the Stockholder owns the Shares free and clear of all liens, charges,
claims, encumbrances and security interests of any nature whatsoever;

     (f) the Stockholder has the present power and right to vote all of the
Shares which are issued and outstanding;

     (g) except as provided herein, the Stockholder has not (i) granted any
proxy, power-of-attorney or other authorization or interest with respect to any
of such Shares, (ii) deposited any of the Shares into a voting trust or (iii)
entered into any voting agreement or other arrangement with respect to the
voting of any of the Shares; and

     (h) the execution and delivery of this Agreement by the Stockholder and the
consummation by the Stockholder of the transactions contemplated hereby do not
require the consent, approval or authorization of, or filing with, any person or
public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE

                                       3

 
STOCKHOLDER AGREES THAT THE PROXY AND ALL OTHER POWER AND AUTHORITY INTENDED TO
BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT IN LAW TO SUPPORT AN
IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9 ABOVE, SHALL NOT BE
REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY LACK OF APPROPRIATE
POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:   /s/   EARL E. DEFRATES
                            -------------------------------
                            Name: Earl E. Defrates
                            Title:   Executive VP & CFO


                         SANIFILL, INC.


                         By:   /s/   RODNEY R. PROTO
                            -----------------------------
                            Name: Rodney R. Proto
                            Title:   President


                         STOCKHOLDER

 
                          /s/ KOSTI SHIRVANIAN
                          -------------------------------
                         Printed Name:   Kosti Shirvanian
                         Number of Shares:   6,714,061

                                       5

 
                                   EXHIBIT 6
 
                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------

     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and John Rangos, Sr.
(the "Stockholder" and, together with Parent and the Company, the "Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement (the "Covered Shares"); and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being

 
collectively referred to as the "Shares"), and to represent and otherwise act as
the Stockholder could act, in the same manner and with the same effect as if the
Stockholder were personally present, at any annual, special or other meeting of
the stockholders of Parent, and at any adjournment thereof (a "Meeting"), or
pursuant to any written consent in lieu of meeting or otherwise; provided,
however, that any such vote or consent in lieu thereof or any other action so
taken shall be solely for the purposes of (i) adopting and approving the Merger
and the Merger Agreement and any transactions contemplated thereby or (ii)
rejecting any proposal made in opposition to consummation of the Merger or any
other action or transaction which is intended to frustrate or impair the right
or ability of Parent, the Subsidiary or the Company to consummate the Merger.
Such attorneys and proxies are hereby authorized to vote the Shares in
accordance with the terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Covered Shares, or grant any proxy, power-of-attorney or other authorization or
interest in or with respect to any of the Covered Shares, or deposit any of the
Covered Shares into a voting trust or enter into a voting agreement or
arrangement with respect to any of the Covered Shares unless and until the
Stockholder shall have (i) taken all actions (including, without limitation, the
endorsement of a legend on the certificates evidencing such Covered Shares)
reasonably necessary to ensure that such Covered Shares shall at all times be
subject to all the restrictions, covenants and limitations imposed by this
Agreement and (ii) caused any transferee or pledgee of such Covered Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

     (a) the Stockholder has full power and authority to enter into this
Agreement and to grant the Proxy, and to perform the Stockholder's obligations
hereunder;

                                       2

 
     (b) this Agreement has been duly executed and delivered by, and constitutes
a valid and binding obligation of, the Stockholder;

     (c) as of the date hereof, the Covered Shares are beneficially owned by the
Stockholder;

     (d) the Shares are all of the securities of Parent owned beneficially or of
record by the Stockholder on the date hereof which are issued and outstanding;

     (e) the Stockholder owns the Shares free and clear of all liens, charges,
claims, encumbrances and security interests of any nature whatsoever;

     (f) the Stockholder has the present power and right to vote all of the
Shares which are issued and outstanding;

     (g) except as provided herein, the Stockholder has not (i) granted any
proxy, power-of-attorney or other authorization or interest with respect to any
of such Shares, (ii) deposited any of the Shares into a voting trust or (iii)
entered into any voting agreement or other arrangement with respect to the
voting of any of the Shares; and

     (h) the execution and delivery of this Agreement by the Stockholder and the
consummation by the Stockholder of the transactions contemplated hereby do not
require the consent, approval or authorization of, or filing with, any person or
public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE STOCKHOLDER AGREES THAT THE PROXY AND ALL
OTHER POWER AND

                                       3

 
AUTHORITY INTENDED TO BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT
IN LAW TO SUPPORT AN IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9
ABOVE, SHALL NOT BE REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY
LACK OF APPROPRIATE POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT
OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:  /s/   EARL E. DEFRATES
                            -------------------------------
                            Name:  Earl E. Defrates
                            Title: Executive VP & CFO


                         SANIFILL, INC.


                         By:  /s/   RODNEY R. PROTO
                            -----------------------------
                            Name:  Rodney R. Proto
                            Title: President


                         STOCKHOLDER

 
                         /s/  JOHN RANGOS, SR.
                         --------------------------------
                         Printed Name:   John Rangos, Sr.
                         Number of Shares:   7,200,000

                                       5

 
                                   EXHIBIT 7

                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------


     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and Alexander W. Rangos
(the "Stockholder" and, together with Parent and the Company, the "Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement (the "Covered Shares"); and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being



 
 
collectively referred to as the "Shares"), and to represent and otherwise act as
the Stockholder could act, in the same manner and with the same effect as if the
Stockholder were personally present, at any annual, special or other meeting of
the stockholders of Parent, and at any adjournment thereof (a "Meeting"), or
pursuant to any written consent in lieu of meeting or otherwise; provided,
however, that any such vote or consent in lieu thereof or any other action so
taken shall be solely for the purposes of (i) adopting and approving the Merger
and the Merger Agreement and any transactions contemplated thereby or (ii)
rejecting any proposal made in opposition to consummation of the Merger or any
other action or transaction which is intended to frustrate or impair the right
or ability of Parent, the Subsidiary or the Company to consummate the Merger.
Such attorneys and proxies are hereby authorized to vote the Shares in
accordance with the terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Covered Shares, or grant any proxy, power-of-attorney or other authorization or
interest in or with respect to any of the Covered Shares, or deposit any of the
Covered Shares into a voting trust or enter into a voting agreement or
arrangement with respect to any of the Covered Shares unless and until the
Stockholder shall have (i) taken all actions (including, without limitation, the
endorsement of a legend on the certificates evidencing such Covered Shares)
reasonably necessary to ensure that such Covered Shares shall at all times be
subject to all the restrictions, covenants and limitations imposed by this
Agreement and (ii) caused any transferee or pledgee of such Covered Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

     (a) the Stockholder has full power and authority to enter into this
Agreement and to grant the Proxy, and to perform the Stockholder's obligations
hereunder;

                                       2


 
 
     (b) this Agreement has been duly executed and delivered by, and constitutes
a valid and binding obligation of, the Stockholder;

     (c) as of the date hereof, the Covered Shares are beneficially owned by the
Stockholder;

     (d) the Shares are all of the securities of Parent owned beneficially or of
record by the Stockholder on the date hereof which are issued and outstanding;

     (e) the Stockholder owns the Shares free and clear of all liens, charges,
claims, encumbrances and security interests of any nature whatsoever;

     (f) the Stockholder has the present power and right to vote all of the
Shares which are issued and outstanding;

     (g) except as provided herein, the Stockholder has not (i) granted any
proxy, power-of-attorney or other authorization or interest with respect to any
of such Shares, (ii) deposited any of the Shares into a voting trust or (iii)
entered into any voting agreement or other arrangement with respect to the
voting of any of the Shares; and

     (h) the execution and delivery of this Agreement by the Stockholder and the
consummation by the Stockholder of the transactions contemplated hereby do not
require the consent, approval or authorization of, or filing with, any person or
public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE STOCKHOLDER AGREES THAT THE PROXY AND ALL
OTHER POWER AND

                                       3

 
AUTHORITY INTENDED TO BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT
IN LAW TO SUPPORT AN IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9
ABOVE, SHALL NOT BE REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY
LACK OF APPROPRIATE POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT
OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:      /s/ EARL E. DEFRATES
                                  -------------------------------
                                      Name: Earl E. Defrates
                                      Title:   Executive VP & CFO


                         SANIFILL, INC.


                         By:      /s/ RODNEY R. PROTO
                                  -----------------------------
                                      Name: Rodney R. Proto
                                      Title:   President


                         STOCKHOLDER

 
                                  /s/ ALEXANDER W. RANGOS 
                                  -----------------------------
                                  Printed Name:   Alexander W. Rangos
                                  Number of Shares:   600,000
 
                                       5

 
                                   EXHIBIT 8
  

                        AGREEMENT AND IRREVOCABLE PROXY
                        -------------------------------


     AGREEMENT AND IRREVOCABLE PROXY (this "Agreement"), dated as of June 22,
1996, among USA Waste Services, Inc., a Delaware corporation ("Parent"),
Sanifill, Inc., a Delaware corporation (the "Company"), and John Rangos
Development Corporation, Inc. (the "Stockholder" and, together with Parent and
the Company, the "Parties").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
Parent and Quatro Acquisition Corp., a wholly-owned subsidiary of Parent
("Subsidiary"), are entering into an Agreement and Plan of Merger dated as of
the date hereof (as amended from time to time, the "Merger Agreement"),
providing, among other things, for the merger of Subsidiary with and into the
Company (the "Merger");

     WHEREAS, the Stockholder is the beneficial owner of the number of issued
and outstanding shares of common stock, par value $0.01 per share, of Parent    
("Parent Common Stock") set forth opposite the Stockholder's name on the
signature page to this Agreement (the "Covered Shares"); and

     WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has requested that the Stockholder grant the Company an
irrevocable proxy (the "Proxy") with respect to the shares of Parent Common
Stock owned by the Stockholder, upon the terms and subject to the conditions
hereof.

     NOW, THEREFORE, in order to induce the Company to enter into the Merger
Agreement and in consideration of the representations, warranties, covenants and
agreements set forth herein and in the Merger Agreement (including the benefits
that the Parties expect to derive from the Merger), the receipt and sufficiency
of all of which are hereby acknowledged by the Parties, the Parties agree as
follows:

     1.  The Stockholder hereby revokes all previous proxies granted with
respect to any shares of Parent Common Stock owned by the Stockholder;

     2.  The Stockholder hereby irrevocably constitutes and appoints the Company
as his true and lawful proxy and attorney-in-fact, with full power of
substitution and resubstitution, for and in the name, place and stead of the
Stockholder, to call and attend any and all meetings of the stockholders of
Parent and any adjournments or continuations thereof, to execute any and all
written consents of stockholders of Parent, and to vote all shares of Parent
Common Stock and all shares of any other class of capital stock of Parent
presently or at any future time owned beneficially or of record by the
Stockholder, including any and all securities having voting rights issued or
issuable in respect thereof, which the Stockholder is entitled to vote (all of
the foregoing being

 
collectively referred to as the "Shares"), and to represent and otherwise act as
the Stockholder could act, in the same manner and with the same effect as if the
Stockholder were personally present, at any annual, special or other meeting of
the stockholders of Parent, and at any adjournment thereof (a "Meeting"), or
pursuant to any written consent in lieu of meeting or otherwise; provided,
however, that any such vote or consent in lieu thereof or any other action so
taken shall be solely for the purposes of (i) adopting and approving the Merger
and the Merger Agreement and any transactions contemplated thereby or (ii)
rejecting any proposal made in opposition to consummation of the Merger or any
other action or transaction which is intended to frustrate or impair the right
or ability of Parent, the Subsidiary or the Company to consummate the Merger.
Such attorneys and proxies are hereby authorized to vote the Shares in
accordance with the terms of this Agreement.

     3.  In the event that the Company is unable or declines to exercise the
power and authority granted by the Proxy for any reason, the Stockholder
covenants and agrees (i) to vote all the Shares at any Meeting in favor of
approval and adoption of the Merger and the Merger Agreement and the
transactions contemplated thereby or provide the Stockholder's written consent
thereto and (ii) unless otherwise requested by the Company in writing, to vote
all of the Shares against any proposal made in opposition to consummation of the
Merger at any Meeting and to refuse to provide the Stockholder's written consent
thereto; provided, however, that the foregoing covenant and agreement shall not
prohibit the Stockholder from taking or omitting to take any action pursuant to
any fiduciary duty imposed upon him by applicable law in his capacity as a
director or officer of Parent even though such action or omission is
inconsistent with any action required to be taken by the Stockholder pursuant to
the foregoing covenant and agreement.

     4.  The Stockholder hereby covenants and agrees that he will not vote or
take any action by written consent of stockholders in lieu of meeting on any
matter which is subject to the Proxy without the prior written consent of the
Company.

     5.  The Stockholder hereby covenants and agrees that the Stockholder will
not, and will not agree to, directly or indirectly, sell, transfer, assign,
pledge, hypothecate, cause to be redeemed or otherwise dispose of any of the
Covered Shares, or grant any proxy, power-of-attorney or other authorization or
interest in or with respect to any of the Covered Shares, or deposit any of the
Covered Shares into a voting trust or enter into a voting agreement or
arrangement with respect to any of the Covered Shares unless and until the
Stockholder shall have (i) taken all actions (including, without limitation, the
endorsement of a legend on the certificates evidencing such Covered Shares)
reasonably necessary to ensure that such Covered Shares shall at all times be
subject to all the restrictions, covenants and limitations imposed by this
Agreement and (ii) caused any transferee or pledgee of such Covered Shares to
execute and deliver to the Company an Agreement and Irrevocable Proxy, in
substantially the form of this Agreement.

     6.  The Stockholder represents and warrants to the Company that:

     (a) the Stockholder has full power and authority to enter into this
Agreement and to grant the Proxy, and to perform the Stockholder's obligations
hereunder;

                                       2

 
     (b) this Agreement has been duly executed and delivered by, and constitutes
a valid and binding obligation of, the Stockholder;

     (c) as of the date hereof, the Covered Shares are beneficially owned by the
Stockholder;

     (d) the Shares are all of the securities of Parent owned beneficially or of
record by the Stockholder on the date hereof which are issued and outstanding;

     (e) the Stockholder owns the Shares free and clear of all liens, charges,
claims, encumbrances and security interests of any nature whatsoever;

     (f) the Stockholder has the present power and right to vote all of the
Shares which are issued and outstanding;

     (g) except as provided herein, the Stockholder has not (i) granted any
proxy, power-of-attorney or other authorization or interest with respect to any
of such Shares, (ii) deposited any of the Shares into a voting trust or (iii)
entered into any voting agreement or other arrangement with respect to the
voting of any of the Shares; and

     (h) the execution and delivery of this Agreement by the Stockholder and the
consummation by the Stockholder of the transactions contemplated hereby do not
require the consent, approval or authorization of, or filing with, any person or
public authority.

     7.  The terms and provisions of this Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware without giving
effect to the provisions thereof relating to conflicts of law.

     8.  The terms and provisions of this Agreement shall be binding upon, inure
to the benefit of, and be enforceable by the heirs, personal representatives,
successors and permitted assigns of the Parties.  This Agreement and the rights
hereunder may not be assigned or transferred by the Company, except with the
prior written consent of the Stockholder.

     9.  This Agreement shall terminate at the earliest of (i) the Effective
Time (as defined in the Merger Agreement), (ii) the date of the termination of
the Merger Agreement in accordance with its terms or (iii) the date upon written
notice of termination of this Agreement is given by the Company to the
Stockholder expressly referring to this paragraph.

     10.  The Stockholder acknowledges that the Company will enter into the
Merger Agreement in reliance upon this Agreement, including the Proxy, and that
the Proxy is granted in consideration for the execution and delivery of the
Merger Agreement by the Company.  THE STOCKHOLDER AGREES THAT THE PROXY AND ALL
OTHER POWER AND

                                       3

 
AUTHORITY INTENDED TO BE CONFERRED HEREBY IS COUPLED WITH AN INTEREST SUFFICIENT
IN LAW TO SUPPORT AN IRREVOCABLE POWER AND, EXCEPT AS PROVIDED IN PARAGRAPH 9
ABOVE, SHALL NOT BE REVOCABLE OR TERMINATED BY ANY ACT OF THE STOCKHOLDER, BY
LACK OF APPROPRIATE POWER OR AUTHORITY OR BY THE OCCURRENCE OF ANY OTHER EVENT
OR EVENTS.

     11.  The Parties acknowledge and agree that performance of their respective
obligations hereunder will confer a unique benefit on the other and that a
failure of performance will result in irreparable harm to the other and will not
be compensable by money damages.  The Parties therefore agree that this
Agreement, including the Proxy, shall be specifically enforceable and that
specific enforcement and injunctive relief shall be a remedy properly available
to each Party for any breach of any agreement, covenant or representation of any
other Party hereunder.

     12.  The Stockholder will, upon request, execute and deliver any additional
documents and take such further actions as may reasonably be deemed by the
Company to be necessary or desirable to complete the Proxy granted herein or to
carry out the provisions hereof.

     13.  If any term, provision, covenant or restriction of this Agreement, or
the application thereof to any circumstance, shall, to any extent, be held by a
court of competent jurisdiction to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Agreement
or the application thereof to any other circumstance, shall remain in full force
and effect, shall not in any way be affected, impaired or invalidated and shall
be enforced to the fullest extent permitted by law.

     14.  This Agreement contains the entire agreement between the Parties with
respect to the subject matter hereof.

     15.  This Agreement may not be changed, amended or modified orally, but
only by an agreement in writing signed by the Party against whom any waiver,
change, amendment, modification or discharge may be sought.

     16.  The words "herein," "hereof" and "hereunder" and other words of
similar import refer to this Agreement as a whole and not to any particular
paragraph or other subdivision. No provision of this Agreement shall be
interpreted or construed against either Party solely because that Party or its
legal representative drafted such provision.

     17.  This Agreement may be executed in counterparts, each of which shall be
deemed to be an original but all of which together shall constitute one and the
same document.

                                       4

 
     IN WITNESS WHEREOF, Parent, the Company and the Stockholder have duly
executed this Agreement or caused this Agreement to be duly executed as of the
date first above written.


                         USA WASTE SERVICES, INC.


                         By:      /s/ EARL E. DEFRATES
                                  -------------------------------
                                      Name: Earl E. Defrates
                                      Title:   Executive VP & CFO


                         SANIFILL, INC.


                         By:      /s/ RODNEY R. PROTO
                                  -----------------------------
                                      Name: Rodney R. Proto
                                      Title:   President


                         STOCKHOLDER

 
                         By:      /s/ ALEXANDER W. RANGOS
                                  ------------------------------
                                      Printed Name:   John Rangos Development
                                      Corporation, Inc.
                                      Number of Shares: 1,200,000

                                       5

 
                                   EXHIBIT 9


June 17, 1996


Sanifill, Inc.
2777 Allen Parkway, Suite 700
Houston, Texas 77019

Attention:  H. Steven Walton
            Vice President-Governmental Affairs
            General Counsel & Secretary

Gentlemen:

     USA Waste Services, Inc. (the "Protected Party") is prepared to furnish
Sanifill, Inc. (the "Recipient") with information relating to the Protected
Party (including information relating to its business and operations, capital
structure and other non-public information) in connection with a proposed
transaction between the Protected Party and the Recipient (the "Transaction"),
which information is confidential or otherwise generally not available to the
public (whether furnished before or after the date hereof, and regardless of the
manner in which it is furnished or whether it is specifically identified as
confidential, together with all analyses, compilations, studies or other
documents that Recipient or its Representatives (as defined below) might prepare
that contain or otherwise reflect such information, the "Confidential
Information"). The term "Confidential Information" shall not include any such
information (a) as may become generally available to the public other than as a
result of a permitted disclosure by Recipient or its Representatives (as defined
below), (b) known to Recipient on a non-confidential basis at the time of
disclosure by or acquired from a source other than the Protected Party that was
not prohibited from making disclosure or (c) subject to paragraph 4 below,
required to be disclosed in order to comply with any applicable law, order,
regulation or ruling. Recipient has prepared and delivered to the Protected
Party, and the Protected Party will execute and adopt concurrent herewith as a
condition to the effectiveness of this letter, a letter substantially identical
to this letter providing for the same rights and conditions relating to the
provision of information by Recipient to the Protected Party in connection with
the Transaction.

     As a condition to furnishing the Confidential Information to Recipient,
Recipient agrees as follows:

 
Sanifill, Inc.
June 17, 1996
Page 2

1.  Unless otherwise agreed to in advance in writing by the Protected Party,
    Recipient agrees (a) except as required by judicial, administrative or
    governmental proceedings, to keep all Confidential Information confidential
    and not to disclose or reveal any Confidential Information to any entity or
    person other than Recipient's employees, representatives, lenders or
    counsel, or affiliates, their employees, representatives, lenders or counsel
    (collectively, "Representatives") who are actively and directly
    participating on Recipient's behalf in connection with the proposed
    Transaction, or who otherwise need to know the Confidential Information for
    Recipient's work in connection with the proposed Transaction (and to be
    responsible for those persons' observing the terms of this agreement) and
    (b) not to use any Confidential Information for any purpose other than in
    connection with the evaluation, negotiation and consummation of the proposed
    Transaction.

    Without the prior written consent of the other party, except to the extent
    required by law or by applicable rules of the New York Stock Exchange in
    order to prevent delisting or prolonged suspension of trading of the
    securities of the disclosing party under such rules or permitted by this
    agreement, neither party nor its Representatives will disclose to any other
    person the fact that discussions or negotiations are taking place concerning
    a possible Transaction, or any of the terms, conditions or other facts with
    respect to any such possible Transaction, including the status thereof.

    The Confidential Information that is written, except for that portion that
    may be found in analyses, compilations, studies or other documents prepared
    by or for Recipient, will be returned to the Protected Party immediately
    upon the Protected Party's request and no copies shall be retained by
    Recipient or Recipient's Representatives. That portion of the Confidential
    Information that is found in analyses, compilations, studies or other
    documents prepared by or for Recipient, the Confidential Information that is
    oral and the Confidential Information that is not so requested or returned
    will be held by Recipient and kept subject to the terms of this agreement,
    or destroyed.

2.  Recipient understands that the Protected Party has endeavored to include in
    the information Recipient has been furnished materials which it believes to
    be reliable and relevant for the purpose of Recipient's evaluation, that the
    Protected Party does not make any representation or warranty as to the
    accuracy or completeness of any information which is so provided, and
    neither the Protected Party nor any officer, director or Representative of
    the Protected Party shall have any liability to Recipient or its
    Representatives resulting from the use of such information by Recipient or
    its Representatives. For purposes of this paragraph 2, "information" is
    deemed to include all

 
Sanifill, Inc.
June 17, 1996
Page 3

    information furnished to Recipient. Only those representations or warranties
    that are made to Recipient in a definitive acquisition agreement when, as,
    and if it is executed, and subject to such limitations and restrictions as
    may be specified in such acquisition agreement, will have any legal effect.

3.  Recipient hereby acknowledges to the Protected Party that it is aware, and
    that it will advise its Representatives, that the Confidential Information
    may contain material, non-public information and that the United States
    securities laws restrict any person who has received any material, non-
    public information regarding an issuer from purchasing or selling securities
    of such issuer or from communicating such information to any other person
    under circumstances in which it is reasonably foreseeable that such person
    is likely to purchase or sell such securities.

4.  In the event Recipient or any of its Representatives should be required (by
    oral questions, interrogatories, requests for information or documents,
    subpoena, civil investigative demand or similar process or by any other
    applicable law or regulation) to disclose any Confidential Information,
    Recipient agrees that it will provide the Protected Party with prompt notice
    of such request or requirement (in any event, within three (3) business days
    after learning of such request or requirement) so that the Protected Party
    may seek an appropriate protective order or other appropriate remedy and/or
    waive Recipient's or its Representatives' compliance with the provisions of
    this agreement.

5.  Recipient hereby acknowledges that the Confidential Information is being
    provided to Recipient in consideration of its agreement that for a period of
    two (2) years from the date hereof neither Recipient nor any of its
    affiliates (as defined in Rule 12b-2 of the Securities Act of 1934, as
    amended (the "Exchange Act")) will (and Recipient and its affiliates will
    not solicit, assist or encourage others to), directly or indirectly, unless
    the Protected Party or the Protected Party's Board of Directors consents
    thereto in writing in advance, (i) acquire, offer to acquire or agree to
    acquire, directly or indirectly, by purchase, gift or otherwise, beneficial
    ownership of any Voting Security (as defined below), if after such
    acquisition the undersigned (together with its affiliates) would hold or
    "beneficially own" (as defined in Rule 13d-3 under the Exchange Act), in the
    aggregate, securities of the Protected Party (including common stock of the
    Protected Party) having the power to vote for the election of directors of
    the Protected Party (or rights, options or warrants to acquire such voting
    securities or any securities convertible into or exchangeable for such
    voting securities) (collectively, "Voting Securities") representing more
    than 1% of the outstanding voting power (determined by the aggregate number
    of votes that may be cast) of the Protected Party's Voting Securities; (ii)
    solicit, or

 
Sanifill, Inc.
June 17, 1996
Page 4

    encourage any other entity or person to solicit, proxies with respect to
    Voting Securities of the Protected Party, or become a "participant" or
    otherwise engage in any "solicitation" of "proxies" (as such terms are
    defined in Regulation 14A under the Exchange Act) with respect to the
    election of directors of the Protected Party in opposition to the nominees
    recommended by the Board of Directors of the Protected Party or otherwise
    for the purpose of acquiring control of the management of the Protected
    Party, or communicate with or seek to advise or influence any entity or
    person with respect to the voting of any Voting Securities; (iii) make any
    public proposals to the Protected Party or any of its directors, officers or
    security holders concerning a merger, consolidation or acquisition of the
    Protected Party or an acquisition of all or substantially all the assets of
    the Protected Party, or any acquisition, disposition, restructuring,
    recapitalization or similar transaction with respect to the Protected Party
    or any subsidiary thereof or take any action which would require the
    Protected Party to make a public announcement regarding the possibility of
    such a transaction with Recipient or any of its affiliates; (iv) otherwise
    join or form a partnership, limited partnership, syndicate or other group
    for the purpose of acquiring, holding, voting or disposing of any Voting
    Securities or encourage, advise or, for the purpose of circumventing or
    avoiding any of the provisions of this agreement, assist any person or
    entity to do any of the foregoing; or (v) request that the Protected Party's
    Board of Directors waive any provision of this paragraph; provided, however,
    that the provisions of this paragraph 5 shall lapse and be of no force and
    effect if (x) a tender or exchange is commenced by a third party (other than
    a third party who is an affiliate of, or acting in concert with, Recipient)
    for 20% or more of the outstanding shares of Protected Party's common stock,
    (y) a third party (including any "group" within the meaning of Section 13d-3
    of the Exchange Act) (other than a third party who is an affiliate of, or
    acting in concert with, Recipient) acquires, after the date of this
    agreement, beneficial ownership (within the meaning of Rule 13d-3 under the
    Exchange Act) of more than 20% of the outstanding shares of Protected
    Party's common stock, or (z) Protected Party agrees (whether by definitive
    agreement or letter of intent) to a merger, consolidation or other
    acquisition of the Protected Party or an acquisition of all or substantially
    all the assets of the Protected Party.

6.  Recipient hereby acknowledges that the Protected Party would not have an
    adequate remedy at law for money damages in the event that this agreement
    were not performed in accordance with its terms and, therefore, agrees that
    the Protected Party shall be entitled to specific performance of the terms
    hereof in addition to any other remedy to which it may be entitled at law or
    in equity; except that in no event shall a party hereto be liable for
    punitive, special or indirect damages.

 
Sanifill, Inc.
June 17, 1996
Page 5

7.  Each party understands and agrees that no contract or agreement providing
    for a Transaction shall be deemed to exist between the Recipient and the
    Protected Party unless and until a definitive acquisition agreement has been
    executed and delivered, and each party hereby waives, in advance, any claims
    (including, without limitation, breach of contract) in connection with any
    such Transaction unless and until the parties have entered into a definitive
    acquisition agreement.

8.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
    LAWS OF THE STATE OF TEXAS.

9.  This Agreement may not be changed, waived, discharged or terminated orally,
    but only by an agreement in writing signed by the party against which the
    enforcement of such change, waiver, discharge or termination is sought.

10. This Agreement shall automatically terminate on the date two (2) years from
    the date of this letter, except that such termination shall not affect any
    rights or remedies of either party arising out of prior breaches of this
    agreement by the other party, provided that legal action to enforce such
    rights or remedies is commenced within two (2) years of such breach and
    except that paragraphs 2, 3, 7, 8, 9 and 10 above shall survive such
    termination.

     If the foregoing is in accordance with Recipient's understanding, please
sign a copy of this letter and return it to the Protected Party, whereupon this
letter shall constitute a binding agreement between the Protected Party and
Recipient.

Very truly yours,

USA Waste Services, Inc.



By:     /s/   GREGORY T. SANGALIS
     ---------------------------------
              Gregory T. Sangalis
              Vice President,
              General Counsel & Secretary

 
Sanifill, Inc.
June 17, 1996
Page 6

AGREED AND ACCEPTED this 17th day of June, 1996.

Sanifill, Inc.

By:     /s/    H. STEVEN WALTON
     --------------------------------
               H. Steven Walton
               Vice President-Government Affairs, 
               General Counsel & Secretary