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                                                                     EXHIBIT 5.1

                               HALE AND DORR LLP
                               COUNSELORS AT LAW

                                  haledorr.com
                       60 STATE STREET - BOSTON, MA 02109
                         617-526-6000 - FAX 617-526-5000



                                           July 24, 2003

Casella Waste Systems, Inc.
25 Greens Hill Lane
Rutland, Vermont 05701

     Re:     REGISTRATION STATEMENT ON FORM S-4

Dear Ladies and Gentlemen:

     This opinion is furnished to you in connection with a Registration
Statement on Form S-4 (the "Registration Statement") filed with the Securities
and Exchange Commission (the "Commission") relating to the registration under
the Securities Act of 1933, as amended (the "Securities Act"), of the issuance
and exchange of up to $150,000,000 original principal amount of 9.75% Senior
Subordinated Notes Due 2013 (the "New Notes"), of Casella Waste Systems, Inc., a
Delaware corporation (the "Company"), and the guarantees of the obligations
represented by the New Notes (the "Guarantees" and, together with the New Notes,
the "Securities") by the subsidiaries of the Company set forth on SCHEDULE A
hereto (such entities, collectively, the "Guarantors").

     The Securities are to be issued pursuant to an Indenture, dated as of
January 24, 2003, as supplemented and amended from time to time (the
"Indenture"), among the Company, the Guarantors and U.S. Bank National
Association, as trustee (the "Trustee"). The Securities are to be issued in an
exchange offer (the "Exchange Offer") for a like aggregate original principal
amount of 9.75% Senior Subordinated Notes Due 2013 currently outstanding (the
"Old Notes") in accordance with the terms of an Exchange and Registration Rights
Agreement, dated as of January 21, 2003 (the "Registration Rights Agreement"),
by and among the Company, the Guarantors and the Purchasers (as defined
therein), which is filed as Exhibit 4.2 to the Registration Statement.

     We are acting as counsel for the Company and the Guarantors in connection
with the issuance by the Company and the Guarantors of the Securities. We have
examined signed copies of the Registration Statement as filed with the
Commission. We have also examined and relied upon the Registration Rights
Agreement, the Indenture, resolutions adopted by the boards of directors or sole
member, as the case may be, of each of the Company and the Guarantors, as
provided to us by the Company and the Guarantors, the certificates of
incorporation and by-laws or other organizational documents, as the case may be,
of the Company and each of the

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        HALE AND DORR LLP IS A MASSACHUSETTS LIMITED LIABILITY PARTNERSHIP        * AN INDEPENDENT JOINT VENTURE LAW FIRM
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Casella Waste Systems, Inc.
July 24, 2003
Page 2

Guarantors, each as restated and/or amended to date, and such other documents as
we have deemed necessary for purposes of rendering the opinions hereinafter set
forth.

     In our examination of the foregoing documents, we have assumed the
genuineness of all signatures, the authenticity of all documents submitted to us
as originals, the conformity to original documents of all documents submitted to
us as copies, the authenticity of the originals of such latter documents and the
legal competence of all signatories to such documents.

     We assume that the appropriate action will be taken, prior to the offer and
exchange of the Securities in the Exchange Offer, to register and qualify the
Securities for issuance under all applicable state securities or "blue sky"
laws.

     We express no opinion herein with respect to matters governed by any laws
other than the state laws of the State of New York and the Commonwealth of
Massachusetts, the General Corporation Law of the State of Delaware and the
federal laws of the United States of America.

     Our opinions below are qualified to the extent that they may be subject to
or affected by applicable bankruptcy, insolvency, reorganization, moratorium,
usury, fraudulent conveyance or similar laws affecting the rights of creditors
generally, and general equity principles (including limitations on the
enforceability of a penalty), regardless of whether such enforceability is
considered in a proceeding in equity or at law. Furthermore, we express no
opinion as to the availability of any equitable or specific remedy, or as to the
successful assertion of any equitable defense, upon any breach of any agreements
or documents or obligations referred to herein, or any other matters, inasmuch
as the availability of such remedies or defenses may be subject to the
discretion of a court.

     Based upon and subject to the foregoing, we are of the opinion that the New
Notes, when executed by the Company, authenticated by the Trustee in the manner
provided by the Indenture and issued and delivered against surrender of the Old
Notes in accordance with the terms and conditions of the Registration Rights
Agreement, the Indenture and the Exchange Offer, will be binding and valid
obligations of the Company, entitled to the benefits provided by the Indenture
and enforceable against the Company in accordance with their terms, and that the
Guarantees, when the New Notes are issued, authenticated and delivered in
accordance with the terms of the Registration Rights Agreement, the Indenture
and the Exchange Offer, will be binding and valid obligations of the Guarantors,
enforceable against each of them in accordance with their respective terms.

     It is understood that this opinion is to be used only in connection with
the offer and exchange of the Securities while the Registration Statement is in
effect.

     Please note that we are opining only as to the matters expressly set forth
herein, and no opinion should be inferred as to any other matters. This opinion
is based upon currently existing statutes, rules, regulations and judicial
decisions, and we disclaim any obligation to advise you of any change in any of
these sources of law or subsequent legal or factual developments which might
affect any matters or opinions set forth herein.

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Casella Waste Systems, Inc.
July 24, 2003
Page 3

     We hereby consent to the filing of this opinion with the Commission as an
exhibit to the Registration Statement in accordance with the requirements of
Item 601(b)(5) of Regulation S-K under the Securities Act and to the use of our
name therein and in the related Prospectus under the caption "Legal Matters". In
giving such consent, we do not hereby admit that we are in the category of
persons whose consent is required under Section 7 of the Securities Act or the
rules and regulations of the Commission.

                                            Very truly yours,

                                            /s/ Hale and Dorr LLP

                                            HALE AND DORR LLP

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SCHEDULE A

          All Cycle Waste, Inc.
          Alternate Energy, Inc.
          Atlantic Coast Fibers, Inc.
          B. and C. Sanitation Corporation
          Blasdell Development Group, Inc.
          Bristol Waste Management, Inc.
          Casella NH Investors Co., LLC
          Casella NH Power Co., LLC
          Casella RTG Investors Co., LLC
          Casella Transportation, Inc.
          Casella Waste Management of Massachusetts, Inc.
          Casella Waste Management of N.Y., Inc.
          Casella Waste Management of Pennsylvania, Inc.
          Casella Waste Management, Inc.
          Data Destruction Services, Inc.
          Fairfield County Recycling, Inc.
          FCR Camden, Inc.
          FCR Florida, Inc.
          FCR Greensboro, Inc.
          FCR Greenville, Inc.
          FCR Morris, Inc.
          FCR Redemption, Inc.
          FCR Tennessee, Inc.
          FCR, Inc.
          Forest Acquisitions, Inc.
          Grasslands Inc.
          Hakes C & D Disposal, Inc.
          Hiram Hollow Regeneration Corp.
          The Hyland Facility Associates
          K-C International, Ltd.
          KTI Bio Fuels, Inc.
          KTI Environmental Group, Inc.
          KTI New Jersey Fibers, Inc.
          KTI Operations Inc.
          KTI Recycling of New England, Inc.
          KTI Specialty Waste Services, Inc.
          KTI, Inc.
          Maine Energy Recovery Company, Limited Partnership
          Mecklenburg County Recycling, Inc.
          Natural Environmental, Inc.
          New England Waste Services of Massachusetts, Inc.
          New England Waste Services of ME, Inc.
          New England Waste Services of N.Y., Inc.

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          New England Waste Services of Vermont, Inc.
          New England Waste Services, Inc.
          Newbury Waste Management, Inc.
          North Country Environmental Services, Inc.
          Northern Properties Corporation of Plattsburgh
          Northern Sanitation, Inc.
          PERC, Inc.
          PERC Management Company Limited Partnership
          Pine Tree Waste, Inc.
          R.A. Bronson Inc.
          ReSource Recovery of Cape Cod, Inc.
          ReSource Recovery Systems of Sarasota, Inc.
          ReSource Recovery Systems, Inc.
          ReSource Transfer Services, Inc.
          ReSource Waste Systems, Inc.
          Rochester Environmental Park, LLC
          Schultz Landfill, Inc.
          Sunderland Waste Management, Inc.
          U.S. Fiber, Inc.
          Waste-Stream Inc.
          Westfield Disposal Service, Inc.
          Winters Brothers, Inc.