WASTE SYSTEMS INTERNATIONAL INC
S-3, 1998-09-29
PATENT OWNERS & LESSORS
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  As filed with the Securities and Exchange Commission on September 29, 1998
                                     Registration Statement No. 333-


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                           -------------------------

                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                           -------------------------

                        WASTE SYSTEMS INTERNATIONAL, INC.
                       (f/k/a BIOSAFE INTERNATIONAL, INC.)
             (Exact name of Registrant as specified in its charter)

       Delaware                                                95-4203626
 (State or other jurisdiction                                (I.R.S. Employer
 of incorporation or organization)                          Identification No.)

                              Lexington Office Park
                          420 Bedford Street, Suite 300
                               Lexington, MA 02173
                                 (781) 862-3000

    (Address,  including zip code, and telephone number,  including area code of
Registrant's principal executive offices)
                         -------------------------------

                                PHILIP W. STRAUSS
                                    President
                        WASTE SYSTEMS INTERNATIONAL, INC.
                              Lexington Office Park
                          420 Bedford Street, Suite 300
                               Lexington, MA 02173
                                 (781) 862-3000

(Name, address, including zip code, and telephone number, including area code,
                              of agent for service)
                         ----------------------------

                                 With a copy to:

                             THOMAS P. STORER, P.C.
                           GOODWIN, PROCTER & HOAR LLP
                                 Exchange Place
                        Boston, Massachusetts 02109-2881
                                 (617) 570-1000
                        ----------------------------

Approximate  date of  commencement  of proposed  sale to the public:  As soon as
practicable after the Registration Statement becomes effective.
                        -----------------------------
        If the only securities  being  registered on this form are being offered
pursuant to dividend or interest  reinvestment plans, please check the following
box.o
        If any of the securities being registered on this form are to be offered
on a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act
of 1933,  other than  securities  offered only in  connection  with  dividend or
interest reinvestment plans, check the following box. x
        If this Form is filed to register additional  securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. o
        If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. o
        If delivery of the prospectus is expected to be made pursuant to Rule
434, please check the following box.  o

                         CALCULATION OF REGISTRATION FEE
<TABLE>

<C>                           <C>                     <C>                       <C>                       <C>
- ----------------------------- ----------------------- ------------------------- ------------------------- ------------------

   Title of Each Class of          Amount to be           Proposed Maximum          Proposed Maximum          Amount of
Securities Being Registered         Registered           Offering Price Per        Aggregate Offering     Registration Fee
                                                             Share (1)                 Price (1)
- ----------------------------- ----------------------- ------------------------- ------------------------- ------------------
- ----------------------------- ----------------------- ------------------------- ------------------------- ------------------

  Common Stock, par value           7,205,022                  $6.01                  $43,302,182            $12,775.00
 $.01 per share. . . . . .
     . . . . . . . . .
- ----------------------------- ----------------------- ------------------------- ------------------------- ------------------
</TABLE>


(1)     Based upon the average of the high and low sale  prices  reported on The
        Nasdaq SmallCap  Market on September 24, 1998, and estimated  solely for
        the purpose of calculating the  registration fee pursuant to Rule 457(c)
        of the Securities Act of 1933, as amended.

(2)     Plus such  additional  shares  as may be  offered  or issued to  prevent
        dilution  resulting from stock splits,  stock  dividends,  reverse stock
        splits, split-ups, recapitalizations or other similar events.

The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933  or  until  the  Registration  Statement  shall  become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.


<PAGE>


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                   SUBJECT TO COMPLETION, DATED SEPTEMBER 29, 1998
- --------------------------------------------------------------------------------
Information contained herein is subject to completion or amendment.  A
registration statement relating to these securities has been filed with the
Securities and Exchange Commission.  These securities may not be sold nor may
offers to buy be accepted prior to the time the registration statement becomes
effective.  This prospectus shall not constitute an offer to sell or the
solicitation of an offer to buy nor shall there be any sale of these
securities  in any State in which  such  offer,  solicitation  or sale  would be
unlawful prior to registration or qualification under the securities laws of any
such State.
- --------------------------------------------------------------------------------

                           PRELIMINARY PROSPECTUS


                             7,205,022 Shares

                      WASTE SYSTEMS INTERNATIONAL, INC.

                               Common Stock
                           -------------------

        All of the shares of common stock, $.01 par value per share (the "Common
Stock"),  offered hereby (the "Shares") are being  registered for the account of
certain  stockholders  of  Waste  Systems  International,  Inc.  (f/k/a  BioSafe
International,  Inc.) ("Waste  Systems" or the  "Company"),  or their  pledgees,
named  herein  (collectively,   the  "Selling   Stockholders").   See  "Plan  of
Distribution"  and  "Selling  Stockholders."  Of the  7,205,022  Shares  offered
hereby,  (i)  6,000,000  Shares  will be issued to holders of the  Company's  7%
Convertible Subordinated Notes due 2005 (the "Subordinated Notes"), (ii) 647,776
Shares were issued on or about May 14, 1998 to certain Selling Stockholders when
the Company exercised its right to convert all of the outstanding  shares of its
Series B Convertible  Preferred Stock,  $.001 par value per share (the "Series B
Preferred  Stock"),  into shares of Common Stock and (iii)  557,246  Shares were
issued to certain Selling Stockholders in connection with various  transactions.
The Company is registering  the Shares to fulfill its  obligations  pursuant to:
(i) a certain Exchange Agreement, dated as of December 30, 1997, relating to the
Series B Preferred Stock (the "Exchange Agreement"), (ii) a certain Registration
Rights Agreement,  dated as of May 13, 1998,  relating to the Subordinated Notes
(the "Registration  Rights  Agreement") and (iii) certain other agreements.  See
"Registration  Obligations."  The  registration  of the  shares of Common  Stock
offered hereby does not necessarily mean that any shares of Common Stock will be
offered or sold by the Selling Stockholders.

        See "Risk Factors" on pages 3 to 6 for a discussion of certain  material
factors that should be considered in connection with an investment in the Common
Stock offered hereby.

   THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
          EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
       SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

        Each of the Selling Stockholders, directly or through agents, dealers or
underwriters  designated  from time to time,  may sell all or a  portion  of the
Shares offered hereby from time to time on terms to be determined at the time of
sale. To the extent  required by law, the specific  Shares to be sold, the names
of the Selling Stockholders,  the respective purchase prices and public offering
prices, the names of any such agent,  dealer or underwriter,  and any applicable
commissions or discounts with respect to a particular offer will be set forth in
an accompanying Prospectus Supplement.  See "Plan of Distribution." Each Selling
Stockholder  reserves the sole right to accept and,  together  with such Selling
Stockholder's  agents,  dealers or underwriters from time to time, to reject, in
whole or in part, any proposed purchase of Shares to be made directly or through
agents, dealers or underwriters.



  The date of this Prospectus is September 29, 1998.

                              1.
<PAGE>


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


        The aggregate proceeds to the Selling  Stockholders from the sale of the
Shares offered hereby (the  "Offering") will be the purchase price of the Shares
sold less the aggregate agents' commissions and underwriters' discounts, if any,
and other expenses of issuance and  distribution  not borne by the Company.  The
Company  will  pay  all of the  expenses  of the  Offering  other  than  agents'
commissions  and  underwriters'  discounts  with  respect to the Shares  offered
hereby and  transfer  taxes,  if any.  The Company will not receive any proceeds
from the sale of the Shares offered hereby by the Selling Stockholders.

        The Selling  Stockholders and any agents,  dealers or underwriters  that
participate with the Selling  Stockholders in the distribution of the Shares may
be deemed to be "underwriters" within the meaning of the Securities Act of 1933,
as amended (the  "Securities  Act"), in which case any  commissions  received by
such agents,  dealers or underwriters and any profit on the resale of the Shares
purchased by them may be deemed underwriting  commissions or discounts under the
Securities  Act. See "Plan of  Distribution"  for  indemnification  arrangements
between the Company and the Selling Stockholders.

        The Common  Stock is traded on The Nasdaq  SmallCap  Market (the "Nasdaq
Market") under the symbol "WSII." On September 24, 1998, the last reported sales
price for the Common Stock on the Nasdaq Market was $6-3/8 per share.

                                   2.
<PAGE>



                              RISK FACTORS

        This Prospectus contains certain  forward-looking  statements within the
meaning of Section 27A of the  Securities  Act and Section 21E of the Securities
Exchange Act of 1934, as amended (the "Exchange  Act"). The Company intends such
forward-looking  statements  to be covered  by the safe  harbor  provisions  for
forward-looking statements contained in the Private Securities Litigation Reform
Act of 1995,  and is including  this  statement  for purposes of complying  with
these safe harbor  provisions.  Forward-looking  statements,  which are based on
certain  assumptions and describe future plans,  strategies and  expectations of
the Company are generally  identifiable by use of the words "believe," "expect,"
"intend,"  "anticipate,"  "estimate,"  "project"  or  similar  expressions.  The
Company's  ability to predict  results or the actual  effect of future  plans or
strategies is inherently uncertain.  Factors which could have a material adverse
affect on the operations and future  prospects of the Company  include,  but are
not  limited  to,  changes  in:  economic  conditions  generally  and the  waste
management industry specifically and  legislative/regulatory  changes (including
changes  to laws  governing  the waste  management  industry).  These  risks and
uncertainties,  together  with  those  stated  below  should  be  considered  in
evaluating forward-looking statements and undue reliance should not be placed on
such statements.

        Prospective  investors should carefully  consider the following factors,
in addition to other matters set forth or incorporated in this Prospectus, prior
to making an  investment  decision  regarding the shares of Common Stock offered
hereby.

        History of Losses.  During the fiscal  years  ending  December 31, 1997,
1996 and 1995, the Company suffered net losses (including non-recurring charges)
of approximately ($5,589,000),  ($13,890,000) and ($7,880,000), respectively, on
revenues of  $3,458,000,  $1,496,000,  and  $1,344,000,  respectively.  From its
inception  through  June  30,  1998,  Waste  Systems  suffered  a  net  loss  of
approximately  $(31,709,000)  on revenues of  approximately  $11,598,000.  Waste
Systems had an accumulated  operating deficit of $(16,041,000) at June 30, 1998.
Prospects for future profitability are heavily dependent upon the success of the
Company's  acquisition  strategy  and  in  its  ability  to  continue  to  build
integrated  solid waste  management  operations.  There can be no assurance that
Waste  Systems  will  generate  sufficient  revenue  to  be  profitable  or,  if
profitable, to maintain profitability in future years.

        The  Independent  Auditors'  Report  of KPMG Peat  Marwick  LLP from the
Company's Annual Report on Form 10-K for each of the fiscal years ended December
31, 1996 and December  31, 1997 states that the Company  must raise  substantial
additional  capital and must achieve a level of revenues adequate to support its
cost structure,  which raises  substantial  doubt about the Company's ability to
continue as a going concern. In addition to immediate capital needs, the Company
must raise substantial  additional capital to bring to commercial  viability all
of its currently  planned projects and must achieve a level of revenues adequate
to support its cost  structure.  There can be no assurance  about the  Company's
ability to raise  additional  capital,  achieve an adequate level of revenues or
continue as a going concern.

        Uncertain  Ability to Finance  the  Company's  Growth.  The  Company has
limited  liquidity  in  relation  to  its  short-term  capital  commitments  and
operating   cash   requirements.   Additionally,   Waste  Systems  will  require
substantial  funds to  complete  and bring to  commercial  viability  all of its
currently  planned  projects.  The  Company  also  anticipates  that any  future
business acquisitions will be financed through cash from operations,  borrowings
under  its bank line of  credit,  the  issuance  of its  Common  Stock or seller
financing,  or additional equity or debt financings.  Therefore,  Waste Systems'
ability to satisfy  its  capital  commitments  and  operating  requirements  are
dependent on a number of pending or future financing  activities,  none of which
are  assured  successful  completion.  Any  failure  of the  Company  to  obtain
sufficient  financing in the short run would have a materially adverse effect on
the Company's financial condition and operations.

                                        3.

<PAGE>


        Dependence  on  Management.  The  Company's  future  success  is  highly
dependent  upon the services of its  executive  officers,  particularly,  Philip
Strauss,  Chairman,  Chief Executive  Officer and President of the Company,  and
Robert Rivkin, Executive Vice President--Acquisitions,  Chief Financial Officer,
Treasurer and Secretary of the Company.  The loss of the services of Mr. Strauss
or Mr. Rivkin could have a material  adverse  effect on the Company's  business,
financial condition and results of operations.  Waste Systems does not currently
maintain key man insurance on any of its personnel.

        The  Company's   future  success  is  also  highly  dependent  upon  its
continuing  ability to  identify,  hire,  train and  motivate  highly  qualified
personnel.  Waste Systems faces competition for hiring such personnel from other
companies,  government  entities  and  other  organizations.  There  can  be  no
assurance  that Waste Systems will be  successful  in  attracting  and retaining
qualified personnel as required for its projected  operations.  The inability to
attract and retain qualified personnel could have a material adverse effect upon
the Company's business, financial condition and results of operations.

        Ability to Manage Growth. The Company's objective is to continue to grow
by expanding its services in markets where it can be one of the largest and most
profitable fully-integrated solid waste management companies.  Accordingly,  the
Company may experience  periods of significant rapid growth.  Such growth, if it
were to occur, could place a significant strain on the Company's  management and
its  operational,  financial  and other  resources.  Any  failure  to expand its
operational  and  financial  systems  and  controls  or to  recruit  appropriate
personnel in an  efficient  manner at a pace  consistent  with such growth could
have a material adverse effect on the Company's  business,  financial  condition
and results of operations.

        Ability to Identify,  Acquire and  Integrate  Acquisition  Targets.  The
future success of the Company is highly  dependent upon the Company's  continued
ability to successfully  identify,  acquire and integrate additional solid waste
collection,  recycling,  transfer and disposal  businesses.  As competition  for
acquisition candidates increases within the solid waste management industry, the
availability of suitable candidates at terms favorable to the Company decreases.
The Company  competes for acquisition  candidates with larger,  more established
companies  that may have  significantly  greater  capital  resources,  which can
further decrease the availability of suitable acquisition candidates.  There can
be no assurance that the Company will be able to identify  suitable  acquisition
candidates and, if available, obtain necessary financings at a price or on terms
and  conditions  favorable  to the Company,  or to  successfully  integrate  the
acquisitions with current operations.

        The  Company  believes  that a  significant  factor  in its  ability  to
consummate acquisitions will be the attractiveness of the Company's Common Stock
as consideration for potential  acquisition targets. This attractiveness may, in
large part, be dependent upon the relative market price and capital appreciation
prospects  of  the  Company's  equity  securities  as  compared  to  the  equity
securities of its competitors. If the market price of the Company's Common Stock
were to decline, the Company's acquisition program could be materially adversely
affected.

        Competition.  The solid waste management industry is highly competitive,
very  fragmented  and  requires   substantial   labor  and  capital   resources.
Competition  exists for collection,  recycling,  transfer and disposal services,
and  acquisition  targets.  The  markets  the  Company  competes or is likely to
compete in are usually served by one or more of the large national,  regional or
local solid waste companies who may have accumulated substantial goodwill and/or
have greater financial, marketing or technical resources than those available to
Waste  Systems.  The Company also competes  with  counties,  municipalities  and
operators  of  alternative  disposal  facilities  that  operate  their own waste
collection and disposal  facilities.  The availability of user fees,  charges or
tax  revenues  and the  availability  of  tax-exempt  financing  may  provide  a
competitive advantage to the public sector.  Additionally,  alternative disposal
facilities  such as  recycling  and  incineration  may reduce the demand for the
disposal of solid  waste in  landfills.  Competition  for waste  collection  and
disposal  business is based on the quality of operation,  price and geographical
location.  From time to time, competitors may reduce the price of their services
in an effort to expand or  maintain  market  share or to win  competitively  bid
contracts.  There  can  be no  assurance  that  the  Company  will  be  able  to
successfully   bid  such  contracts  or  compete  with  the  larger  and  better
capitalized companies.


                                        4.
<PAGE>



        Limitations  on  Landfill   Permitting  and  Expansion.   The  Company's
operations depend on its ability to expand the landfills it owns or operates and
develop new landfill  sites.  There can be no assurance that the Company will be
successful in obtaining new landfill  sites or expanding the permitted  capacity
of its  landfill.  The process of obtaining  required  permits and  approvals to
operate and expand  landfills  and  transfer  stations  has become  increasingly
difficult  and  expensive.  The  process  can take  several  years and  involves
hearings and compliance with zoning, environmental and other requirements. There
can be no  assurance  that the  Company  will be  successful  in  obtaining  and
maintaining  required  permits.  Even when granted,  final permits to expand are
often not approved until the remaining  capacity of the landfill is very low. In
the event the Company  exhausts  its  permitted  capacity at its  landfill,  the
Company's  ability to expand  internally will be limited and the Company will be
required to cap and close the landfill. In addition, the Company could be forced
to dispose of its waste at landfills operated by its competitors. The additional
costs could have a material adverse effect on the Company's business.


        Geographic  Concentration  of  Operations.  The Company has  established
integrated solid waste management  operations in Vermont,  central Pennsylvania,
Massachusetts  and upstate New York. Since the Company's  current primary source
of revenues will be concentrated in these  geographic  locations,  the Company's
business,  financial  condition  and results of  operations  could be materially
affected by,  without  limitation,  the  following:  (i)  downturns in the local
economy,  (ii) severely harsh weather  conditions  and (iii) state  regulations.
Additionally,  the  growing  competition  within the local  economies  for waste
streams may make it increasingly difficult to expand within these regions. There
can be no  assurance  that the Company  will be able to continue to increase the
waste  stream to its  landfills or be able to expand its  geographic  markets to
lessen the effects of adverse events that may occur in these regions.

        Seasonality.  The Company's  revenues and results of operations  tend to
vary  seasonally.  The winter  months of the fourth  and first  quarters  of the
calendar year tend to yield lower revenues than those  experienced in the warmer
months of the second and third quarters.  The primary reasons for lower revenues
in the winter  months  include,  without  limitation:  (i) harsh winter  weather
conditions can interfere with collection and  transportation,  (ii) construction
and demolition  activities which generate landfill waste are primarily performed
in the warmer  seasons and (iii) the volume of waste in the region is  generally
higher in warmer  months.  The  Company  believes  that the  seasonality  of the
revenue  stream  will  not  have a  material  adverse  effect  on the  Company's
business, financial condition and results of operations on an annualized basis.

        Environmental and Government Regulations.  The Company and its customers
operate in a highly regulated environment, and in general the Company's landfill
projects will be required to have federal, state and/or local government permits
and  approvals.  Any of these  permits  or  approvals  may be subject to denial,
revocation or  modification  under various  circumstances.  In addition,  if new
environmental  legislation or regulations are enacted or existing legislation or
regulations  are  amended or are  interpreted  or  enforced  differently,  Waste
Systems or its customers may be required to obtain additional  operating permits
or approvals.  There can be no assurance that Waste Systems will meet all of the
applicable regulatory  requirements.  Any delay in obtaining required permits or
approvals  will tend to cause delays in the Company's  ability to obtain bond or
other project financing,  resulting in increases in the Company's need to invest
working  capital in projects prior to obtaining more  permanent  financing,  and
will also tend to reduce  project  returns by  deferring  the receipt of project
revenues.  In the event that the  Company  is  required  to cancel  any  planned
project  as a result  of the  inability  to  obtain  required  permits  or other
regulatory  impediments,  the Company may lose any investment it has made in the
project up to that point, and the cancellation of any landfill projects may have
a materially adverse effect on the Company's  financial condition and results of
operations.

        Potential  Environmental  Liability and Adverse Effect of  Environmental
Regulation.  Waste Systems' business exposes it to the risk that it will be held
liable if harmful  substances  escape into the  environment and cause damages or
injuries as a result of its operating activities.  Moreover,  federal, state and
local environmental legislation and regulations require substantial expenditures
and impose significant liabilities for noncompliance.

                                        5.
<PAGE>



        Potential  Adverse  Community   Relations.   The  potential  exists  for
unexpected delays,  costs and litigation resulting from community resistance and
concerns relating to specific projects in various communities.

        Performance  or Surety  Bonds and Letters of Credit.  The Company may be
required to post a performance  bond,  surety bond or letter of credit to ensure
proper closure and post-closure  monitoring and maintenance at its landfills and
transfer stations.  Failure to obtain performance bonds, surety bonds or letters
of credit in  sufficient  amounts  or at  acceptable  rates may have a  material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

        Limits on Insurance.  The Company has obtained environmental  impairment
liability  insurance  covering  claims  for  the  sudden  or  gradual  onset  of
environmental damage. If the Company were to incur a liability for environmental
damage in excess of its  insurance  limits,  its  financial  condition  could be
adversely  affected.  The  Company  carries a  comprehensive  general  liability
insurance policy which management considers adequate at this time to protect its
assets and operations from other risks.

        Adequacy of Accruals for Closure and Post-Closure Costs. The Company has
material financial obligations relating to closure and post-closure costs of its
existing  landfills  and any  landfill it may purchase or operate in the future.
The Company  estimates  and  accrues  closure  and  post-closure  costs based on
engineering  estimates of airspace usage and remaining airspace capacity.  There
can be no assurances  that the Company's  financial  obligations for closure and
post-closure costs will not exceed the amount accrued,  and that this may have a
material  adverse  effect on the  Company's  business,  financial  condition and
results of operations.

        Capital  Expenditures.  The  Company  capitalizes,  in  accordance  with
generally  accepted  accounting  principles,  certain  expenditures and advances
relating to  acquisitions,  pending  acquisitions  and  landfill  projects.  The
Company's  policy is to expense in the current  period all  unamortized  capital
expenditures  and advances  relating to any operation that is  permanently  shut
down or any acquisition  that will not be consummated  and any landfill  project
that is terminated.  Thus, the Company may be required to incur a charge against
earnings  in future  periods  that could have a material  adverse  effect on the
Company's business, financial conditions and results of operations.

        Dilution of Existing Stockholders.  As of September 24, 1998, there were
11,711,212  shares of the Company's Common Stock issued and  outstanding.  As of
the same date, the Company had outstanding stock options exercisable for 418,854
shares of the Company's  Common Stock and  Subordinated  Notes  convertible into
6,000,000 shares of the Company's  Common Stock. The exercise and/or  conversion
of such stock options and Subordinated  Notes would dilute the net tangible book
value per share of the Company's Common Stock.

                                   6.
<PAGE>



                                THE COMPANY


General

        Waste  Systems  is  a  regional  integrated  non-hazardous  solid  waste
management company that provides solid waste collection, recycling, transfer and
disposal   services  to  commercial,   industrial,   residential  and  municipal
customers.

        The  Company  currently  owns and  operates  solid  waste  landfills  in
Moretown, Vermont, Hopewell,  Pennsylvania and Somerset County, Pennsylvania and
three  transfer  stations  and  collection  facilities,  which  function  as  an
integrated solid waste operation,  serving over 25,000  commercial,  industrial,
residential and municipal customers in Vermont, central Pennsylvania, upstate
New York and Massachusetts.

        Waste Systems'  objective is to expand the current  geographic  scope of
its operations  primarily within the Northeast and  Mid-Atlantic  regions of the
United States and to become one of the leading providers of non-hazardous  solid
waste  management in each market that it serves.  The Company's  primary  growth
strategy  is to acquire  landfills  in or near urban  metropolitan  areas and to
secure  dedicated  waste streams for such landfills  through the acquisition and
development of collection operations and transfer stations.  The internalization
of waste is a major component of the Company's  strategy.  The Company  believes
that  significant  opportunities  exist to expand its  operations in each of its
current and targeted markets.

        The  Company's  principal  executive  offices are  located at  Lexington
Office Park, 420 Bedford Street,  Suite 300, Lexington,  MA 02173; its telephone
number is (781) 862-3000.  The Company was incorporated in Nevada in 1989 as Zoe
Capital  Corp.  and had no operations  until March 29, 1995.  On that date,  the
Company acquired BioSafe, Inc., a Delaware corporation,  through a merger with a
subsidiary of the Company, and changed its name to "BioSafe International, Inc."
In October 1997, the Company was reincorporated as "Waste Systems International,
Inc." under the laws of the State of  Delaware,  pursuant  to a  reincorporation
merger.

The Series B Preferred Stock Offering

        On December 30, 1997,  the Company  issued 40,488 shares of the Series B
Preferred Stock in a private  placement in exchange for outstanding  convertible
notes of the  Company.  The Series B  Preferred  Stock  returned  a 6.0%  annual
cumulative  dividend and was  convertible  into shares of the  Company's  Common
Stock at a  conversion  price of $6.25  per  share  of such  Common  Stock.  The
dividend was payable in cash or in additional shares of Series B Preferred Stock
at the Company's option. The Series B Preferred Stock was also redeemable (i) at
the  Company's  option for shares of the  Company's  Common Stock if the average
closing  price of the  Company's  Common Stock for 20  consecutive  trading days
equaled or exceeded $6.25 and (ii) at the Company's option for cash equal to the
redemption  price as set forth in the Certificate of Designation of the Series B
Preferred  Stock if any shares of Series B Preferred  Stock were  outstanding on
October 6, 2000. On May 14, 1998, the Company exercised its right to convert all
of the issued and outstanding  shares of Series B Preferred Stock into shares of
Common Stock pursuant to clause (i) of the previous sentence.

The Subordinated Notes Offering

        On May 13,  1998,  the Company  closed an  offering of $60.0  million in
Subordinated   Notes,   which  resulted  in  net  proceeds  to  the  Company  of
approximately $58.3 million. The Subordinated Notes will mature in May 2005, and
bear interest at 7.0% per annum,  payable  semi-annually in arrears on each June
30 and December 31,  commencing  June 30, 1998. The  Subordinated  Notes and any
accrued but unpaid  interest are  convertible  into Common Stock at a conversion
price of $10.00 per share at the  option of the  holder at any time,  and can be
mandatorily  converted by the Company  after two years if the  Company's  Common
Stock closing price equals or exceeds the  conversion  price of $10.00 per share
for a period of 20 consecutive trading days.

                                        7.
<PAGE>



Recent Developments


        Going Concern  Qualification.  The Independent  Auditor's Report of KPMG
Peat Marwick LLP from the  Company's  Annual Report on Form 10-K for each of the
fiscal  years ended  December  31, 1997 and 1996 states that "the  Company  must
raise  substantial  additional  capital  and must  achieve  a level of  revenues
adequate to support the Company's cost structure, which raises substantial doubt
about the Company's ability to continue as a going concern." The factors causing
the going concern opinion were the Company's  accumulated operating deficit, its
working capital deficit and its need to raise substantial  additional capital to
satisfy  existing  and pending  commitments.  Waste  Systems had an  accumulated
operating  deficit at December 31, 1996 and 1997 of approximately  $23.2 million
and $28.8 million,  respectively,  on operating  revenues of approximately  $2.8
million and $6.3 million,  respectively.  In addition, the Company had a working
capital  deficit of $4.5  million  and  working  capital of  approximately  $1.5
million and cash  balances of $265,000 and  $2,965,000  at December 31, 1996 and
1997,  respectively.  To respond to the  operating  and  financial  issues,  the
Company took action in 1996 to conserve cash and working capital, which included
the  restructuring  of the  Company's  operations  to focus  its  resources  and
activities on the development of a solid waste management operation.

        In 1997 and 1998,  the Company  took and has taken  further  measures to
address  its ability to continue as a going  concern,  including  the  continued
implementation  of its 1996  restructuring.  In  addition,  the  Company  raised
approximately  $9.7 million of capital in June of 1997 and, on May 13, 1998, the
Company  closed on an  offering  of $60.0  million of  Subordinated  Notes which
resulted in net proceeds to the Company of approximately $58.3 million. Although
the  Company  is  generating  revenues  and  cash  flows  from its  Vermont  and
Pennsylvania  operations,  substantial additional financing will be necessary to
satisfy  existing and pending  commitments.  The Company's  alternatives in this
regard include the issuance of additional  equity or long-term debt. The Company
believes that,  through a combination of internally  generated  funds and future
financings,  it  will  be  able  to  satisfy  its  anticipated  working  capital
requirements  for at least the next  twelve  months.  The  Company is engaged in
discussions with various parties and believes it will be successful in obtaining
additional capital.  However, no assurance can be given that the Company will be
able to obtain necessary financing,  and the failure to raise additional capital
could have a material  adverse effect on the Company's  financial  condition and
operations.

        Acquisitions.  The  Company  currently  has  two  landfill  projects  at
different  stages of development.  In September  1998,  Waste Systems closed the
acquisition  of the  Mosteller  Landfill,  a 513-acre  solid  waste  landfill in
Somerset County, Pennsylvania.

        Additionally,  the  Company  has  entered  into a contract to operate an
existing 30-acre municipal landfill in South Hadley, Massachusetts. On March 16,
1998,  the  Company  filed  its  draft  environmental  impact  report  with  the
Massachusetts  Department of Environmental  Protection and anticipates receiving
all of its  permits  during the fourth  quarter of 1998 which  would allow Waste
Systems to begin accepting solid waste at the first 6-acre lined cell during the
first half of 1999. The South Hadley landfill  project is currently  expected to
have approximately 2 million cubic yards of new capacity for future disposal.

        During the first nine months of 1998, the Company acquired 10 collection
companies  and a  transfer  station  in the State of  Vermont,  five  collection
companies in Pennsylvania,  seven collection companies and a transfer station in
upstate   New  York  and  a   collection   company  and   transfer   station  in
Western/Central  Massachusetts.  These  acquired  companies  generated  combined
revenues of approximately $35 million in fiscal 1997.

        The  Company  currently  is, and at any given time will be  involved  in
potential   acquisitions   that  are  in  various  stages  of  negotiation   and
consummation  (ranging from initial  discussions  to the execution of definitive
agreements),  some of which may be material.  No assurance can be given that the
Company will be able to complete any such acquisitions.


                                   8.
<PAGE>


                         REGISTRATION OBLIGATIONS

        The  registration  of  the  shares  of  Common  Stock  pursuant  to  the
Registration Statement of which this Prospectus is a part will discharge certain
of the  Company's  obligations  under the terms of the Exchange  Agreement,  the
Registration Rights Agreement and certain other agreements.

        Pursuant  to the  Exchange  Agreement,  the  Company  agreed  to pay all
expenses (other than  underwriting  commissions and the fees and expenses of any
counsel for the Selling  Stockholders)  of  effecting  the  registration  of the
shares of Common Stock with  respect to which the Series B Preferred  Stock were
converted.  The  obligations of the Company with respect to the  registration of
shares of the Company's Common Stock issued upon the conversion of the shares of
the Series B  Preferred  Stock will  expire  and  terminate  at such time as the
Selling Stockholders are entitled to sell the shares of Common Stock issued upon
the conversion of the shares of Series B Preferred Stock without restriction and
without a need for the filing of a registration  statement  under the Securities
Act.

        Pursuant to the Registration Rights Agreement, the Company agreed to pay
all expenses (other than  underwriting  discounts and  commissions) of effecting
the  registration  of the  shares  of Common  Stock  with  respect  to which the
Subordinated Notes may be converted. The obligations of the Company with respect
to the  registration  of shares of the  Company's  Common  Stock issued upon the
conversion of the Subordinated  Notes will expire and terminate upon the earlier
of (i) two years  after the last date of original  issuance of the  Subordinated
Notes and (ii) such time as the Selling  Stockholders  are  entitled to sell the
shares of Common  Stock issued upon the  conversion  of the  Subordinated  Notes
without  restriction  and  without  a need  for  the  filing  of a  registration
statement under the Securities Act.


                             SELLING STOCKHOLDERS

        The following table sets forth certain  information known to the Company
with  respect to the  Selling  Stockholders,  including  the number of shares of
Common  Stock  beneficially  owned by each  Selling  Stockholder,  the number of
Shares  registered  hereby,  and the number and  percentage  of shares of Common
Stock held by each Selling  Stockholder  before the Offering  and,  assuming the
sale of all  registered  Shares,  after the Offering.  There can be no assurance
that all or any of the Shares offered hereby will be sold. If any are sold, each
Selling  Stockholder  will receive all of the net proceeds from the sale of his,
her or its respective  Shares offered  hereby.  The amounts set forth are to the
best of the Company's knowledge.

<TABLE>
<C>                                        <C>           <C>              <C>               <C>              <C>
                                           Shares  Beneficially           Shares to be
                                              Owned Prior to             Registered and     Shares Beneficially
                                                Offering                 Sold in           Owned After Offering
          Beneficial Owner                  Number(1)   Percent(2)          Offering        Number(1)   Percent(2)

Corner Bank Ltd.........................   73,376              *            40,992               32,384        *
Napier Brown Holdings Ltd...............   24,608              *            24,608                0            *
Patrick George Ridgewill
   c/o Napier Brown holdings, Ltd.......   16,400              *            16,400                0            *
Banca Del Gottardo......................  338,254            1.9            73,792               264,462     1.5
Bostar AS...............................  149,923              *            32,800               84,323        *
Nomura International Securities.........  127,163              *            20,496               106,667       *
The RR Fund.............................   20,496              *            20,496                0            *
Swiss American Securities...............  106,592              *           106,592                0            *
Gerlach & Co............................    4,096              *             4,096                0            *
Hillside Holdings Ltd...................   24,608              *            24,608                0            *
Republic National Bank of New York
  (Luxembourg SA).......................    4,096              *             4,096                0            *
Republic National Bank of New York
  (France) SA...........................    4,096              *             4,096                0            *
W&P Bank and Trust Company..............   24,600              *            24,600                0            *
Julius Baer Securities..................   82,000              *            82,000                0            *
Bangholm Enterprises Ltd................    4,096              *             4,096                0            *
Republic National Bank of New York

  (Suisse) SA...........................   20,496              *            20,496                0            *
AS Corona...............................   12,304              *            12,304                0            *
Nicolai Gram............................   50,496              *            24,608               25,888        *
David Anthony Rees......................   16,400              *            16,400                0            *
Peter Spiten............................    4,309              *             4,096               213           *
BFI Banque de Financement & d'Investissment57,408              *            57,408                0            *
Harry K. Benjamin.......................   55,555              *            55,555                0            *
Jacques Khodara.........................   55,555              *            55,555                0            *
John J. Hastings........................  227,961            1.3           227,961                0            *
Terrence J. Hastings....................  227,961            1.3           227,961                0            *
John Hancock Advisors...................1,150,000            6.3         1,150,000                0            *
BEA Associates..........................  700,000            3.9           700,000                0            *
Dawson Samberg Capital Management, Inc..  150,000              *           150,000                0            *
The Prudential Insurance Company
     of America                         1,591,611            8.8         1,000,000            591,611        3.3
B III Capital Partners, L.P.............5,567,406           30.1         2,011,851          3,555,555       19.6
Roton & Co.............................. 1,544,421           8.5         1,002,963            541,458        3.0
                                        ----------        --------------------------           -------------------

TOTAL...................................12,355,581           68.1%       7,205,022           5,202,561      28.7%
                                        ==========  ===============================          ====================

</TABLE>
                                             9.

<PAGE>


- ----------------
*       Less than 1%

(1)     Except as indicated in the other footnotes to this table or as described
        below with respect to the  relationships of the Selling  Stockholders in
        the Company,  based on information  provided by such persons and subject
        to applicable  community  property  laws, the persons named in the table
        above have sole voting and  investment  power with respect to all of the
        shares of Common Stock shown as beneficially owned by them.

(2)     Percentage  of ownership is based on  18,130,066  shares of common share
        equivalents  outstanding on September 24, 1998, consisting of 11,711,212
        shares of issued and outstanding Common Stock,  418,854 shares of Common
        Stock  issuable upon the exercise of stock options that may be exercised
        within 60 days of  September  24,  1998 and  6,000,000  shares of Common
        Stock  issuable  upon the  conversion  of the  outstanding  Subordinated
        Notes.  Shares of Common  Stock that may be issued upon the  exercise of
        stock options that are exercisable  within 60 days of September 24, 1998
        are deemed  outstanding  for computing  the  percentage of the person or
        group holding such options, but are not deemed outstanding for computing
        the percentage of any other person or group.

The relationships of the Selling Stockholders to the Company are as follows:

Name                            Relationship

B III Capital
 Partners, L.P.     DDJ Capital Management, LLC ("DDJ") serves as the investment
                    manager to B III  Capital  Partners,  L.P.  ("B III") and an
                    affiliate  of DDJ acts  as  the  general  partner of  B III.
                    Two  Directors  of  Waste Systems,  Judy K. Mencher and
                    David J. Breazzano,  are managing members of DDJ.

                                   10.
<PAGE>

                             PLAN OF DISTRIBUTION


        The Shares of Common Stock  offered  hereby may be offered and sold from
time to time by the Selling  Stockholders listed above, or by pledgees,  donees,
transferees or other successors in interest. The Company will not receive any of
the proceeds from this Offering. The Shares offered hereby may be sold from time
to time on the  Nasdaq  Market  on  terms to be  determined  at the time of such
sales.  The Shares of Common Stock may be sold by one or more of the  following:
(a) a block trade in which the broker or dealer so engaged  will attempt to sell
the Shares of Common Stock as agent but may position and resell a portion of the
block as principal to facilitate the  transaction;  (b) purchases by a broker or
dealer as principal and resale by such broker or dealer for its account pursuant
to this  Prospectus;  (c) ordinary  brokerage  transactions  and transactions in
which the broker  solicits  purchasers;  (d) private sales directly or through a
broker or brokers;  and (e) to or through  underwriters,  dealers or agents, who
may  receive  consideration  in the  form of  discounts  and  commissions;  such
compensation,  which may be in excess of ordinary brokerage commissions,  may be
paid by the Selling  Stockholders  and/or the  purchasers of the Shares  offered
hereby  for whom such  underwriters,  dealers  or agents  may act.  The  Selling
Stockholders  and any dealers or agents that  participate in the distribution of
the Shares offered hereby may be deemed to be  "underwriters"  as defined in the
Securities Act, and any profit on the sale of such Shares offered hereby by them
and any discounts,  commissions  or concessions  received by any such dealers or
agents might be deemed to be underwriting  discounts and  commissions  under the
Securities Act. The aggregate proceeds to the Selling Stockholders from sales of
the Shares offered by the Selling Stockholders hereby will be the purchase price
of such Common Stock less any broker's commissions.


        To the extent required,  the specific shares of Common Stock to be sold,
the names of the Selling Stockholders, the respective purchase prices and public
offering  prices,  the names of any such agent,  dealer or underwriter,  and any
applicable  commissions or discounts with respect to a particular  offer will be
set forth in an accompanying Prospectus Supplement

        The Shares  offered  hereby may be sold from time to time in one or more
transactions  at a fixed  offering  price,  which may be changed,  or at varying
prices determined at the time of sale or at negotiated prices.

        In order to  comply  with the  securities  laws of  certain  states,  if
applicable,  the Shares offered hereby will be sold in such  jurisdictions  only
through  registered  or licensed  brokers or dealers.  In  addition,  in certain
states Shares may not be sold unless they have been  registered or qualified for
sale  in  the  applicable  state  or  an  exemption  from  the  registration  or
qualification requirement is available and is complied with.

        In  the  event  of  a   "distribution"   of  the  shares,   the  Selling
Stockholders, any selling broker-dealer or agent and any "affiliated purchasers"
may be subject to  Regulation M under the Exchange  Act,  which would  prohibit,
with  certain  exceptions,  each such person from  bidding  for,  purchasing  or
attempting to induce any person to bid for or purchase any security which is the
subject of such  distribution  until his  participation in that  distribution is
completed.  In addition,  Regulation M under the Exchange Act prohibits  certain
"stabilizing bids" or "stabilizing purchases" for the purpose of pegging, fixing
or maintaining the price of Common Stock in connection with this Offering.

        The Company  will pay  substantially  all the  expenses  incurred by the
Selling  Stockholders  and the Company  incident to the Offering and sale of the
Shares to the public, but excluding any underwriting  discounts,  commissions or
transfer  taxes.  The Company has agreed to indemnify  the Selling  Stockholders
against certain liabilities, including liabilities under the Securities Act.


                             AVAILABLE INFORMATION

        The Company is subject to the informational requirements of the Exchange
Act and, in accordance  therewith,  files  reports,  proxy  statements and other
information with the Securities and Exchange Commission (the "Commission").  The
Registration  Statement,  as well as such reports,  proxy  statements  and other
information  can be  inspected  and  copied at the public  reference  facilities
maintained by the Commission at Room 1024,  Judiciary  Plaza,  450 Fifth Street,
N.W.,  Washington,  D.C. 20549,  and at the  Commission's  Regional Offices at 7
World Trade Center, Suite 1300, New York, New York 10048 and Northwestern Atrium
Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 606612511. Copies
of such material can also be obtained from the Public  Reference  Section of the
Commission  at  Room  1024,  Judiciary  Plaza,  450  West  Fifth  Street,  N.W.,
Washington,  D.C. 20549, and at its public reference facilities at New York, New
York and Chicago,  Illinois at prescribed rates. The Commission also maintains a
Web  site  at  http://www.sec.gov  containing  reports,  proxy  and  information
statements and other information regarding  registrants,  including the Company,
that file electronically with the Commission.  In addition, the Company's Common
Stock is listed on Nasdaq Market, and the  aforementioned  materials may also be
inspected  at the  offices of The Nasdaq  Stock  Market,  Inc. at 1735 K Street,
N.W., Washington, D.C. 20006.


                                        11.
<PAGE>



        The Company has filed with the  Commission a  Registration  Statement on
Form S-3 (the "Registration Statement," which term shall include all amendments,
exhibits, annexes and schedules thereto) pursuant to the Securities Act, and the
rules and regulations  promulgated  thereunder,  covering the Common Stock being
offered  hereby.  For further  information  with  respect to the Company and the
shares of Common  Stock being  offered by this  Prospectus,  reference is hereby
made to such  Registration  Statement,  including  the  exhibits  filed  as part
thereof.  Statements  contained in this Prospectus  concerning the provisions of
certain  documents filed with, or incorporated by reference in, the Registration
Statement are not necessarily  complete,  each such statement being qualified in
all respects by such  reference.  Copies of all or any part of the  Registration
Statement, including the documents incorporated by reference therein or exhibits
thereto,  may be obtained upon payment of the prescribed  fees at the offices of
the Commission set forth above.


                  INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

        The  following  documents  previously  filed  by the  Company  with  the
Commission  pursuant to the Exchange Act are  incorporated in this Prospectus by
reference:  (i) the  Company's  Annual  Report on Form 10-K for the fiscal  year
ended  December  31, 1997,  as amended by the  Company's  Annual  Report on Form
10-K/A,  as  further  amended  by the  Company's  Annual  Report on Form  10-K/A
(Amendment  No. 2);  (ii) the  Company's  Quarterly  Report on Form 10-Q for the
quarterly period ended March 31, 1998;  (iii) the Company's  Quarterly Report on
Form 10-Q for the  quarterly  period  ended  June 30,  1998,  as  amended by the
Company's  Quarterly Report on Form 10-Q/A; (iv) the Company's Current Report on
Form 8-K,  as filed  with the  Commission  on May 27,  1998;  (v) the  Company's
Current  Report on Form 8-K, as filed with the  Commission  on June 5, 1998,  as
amended  by the  Company's  Current  Report  on Form  8-K/A,  as filed  with the
Commission on June 12, 1998, as further amended by the Company's  Current Report
on Form 8-K/A (Amendment No. 2), as filed with the Commission on August 4, 1998,
as further amended by the Company's  Current Report on Form 8-K/A (Amendment No.
3), as filed with the  Commission on August 28, 1998 ; (vi) the  description  of
the Company's Common Stock contained in its  Registration  Statement on Form 8-A
(Commission File No. 0-25998) as filed on April 28, 1995 under Section 12 of the
Exchange Act; and (vii) the  description  of the  Company's  Series A, Series C,
Series D, Series E and Placement  Agent Warrants  contained in its  Registration
Statement on Form 8-A  (Commission  File No.  0-25998) as filed on June 26, 1995
under Section 12 of the Exchange Act.

        All documents filed by the Company pursuant to Section 13(a),  13(c), 14
or 15(d) of the Exchange Act subsequent to the date of this Prospectus and prior
to the filing of a  post-effective  amendment  hereto  that  indicates  that all
securities  offered  hereunder  have  been  sold or that  deregisters  all  such
securities then remaining unsold shall be deemed to be incorporated by reference
in this  Prospectus  and to be a part  hereof  from the date of  filing  of such
documents.

        Any  statement  contained  in a  document  incorporated  or deemed to be
incorporated  herein by reference  shall be deemed to be modified or  superseded
for purposes of this Prospectus to the extent that a statement  contained herein
(or  in an  applicable  Prospectus  Supplement)  or in  any  subsequently  filed
document that is  incorporated  by reference  herein modifies or supersedes such
statement.  Any such statement so modified or superseded  shall not be deemed to
constitute a part of this Prospectus or any Prospectus Supplement,  except as so
modified or superseded.

        The Company will provide,  without charge, to each person, including any
owner of Common Stock,  to whom a copy of this  Prospectus is delivered,  at the
written or oral  request of such person,  a copy of any or all of the  documents
incorporated  herein by  reference  (other than  exhibits  thereto,  unless such
exhibits  are  specifically  incorporated  by  reference  into such  documents).
Requests for such copies should be directed to Robert  Rivkin,  Chief  Financial
Officer, Waste Systems  International,  Inc., Lexington Office Park, 420 Bedford
Street, Suite 300, Lexington, MA 02173, telephone (781) 862-3000.

                               LEGAL MATTERS

        The  validity  of the  shares of Common  Stock  offered  hereby has been
passed upon for the Company and the Selling  Stockholders by Goodwin,  Procter &
Hoar LLP, Boston, Massachusetts.

                                        12.
<PAGE>



                                   EXPERTS


        The consolidated  financial  statements of Waste Systems  International,
Inc.  as of  December  31,  1997  and  1996,  and for  each of the  years in the
three-year period ended December 31, 1997,  incorporated  herein by reference to
the Company's  Annual Report on Form 10-K for the year ended  December 31, 1997,
have been so  incorporated  in reliance on the report of KPMG Peat  Marwick LLP,
independent certified public accountants, given on the authority of that firm as
experts in accounting and auditing. The report of KPMG Peat Marwick LLP covering
the  consolidated  financial  statements is incorporated by reference herein and
contains an  explanatory  paragraph  that  states  that the  Company  must raise
substantial  additional capital and must achieve a level of revenues adequate to
support the Company's cost structure  which raises  substantial  doubt about its
ability to continue as a going concern. The consolidated financial statements of
Waste Systems  International,  Inc.,  incorporated by reference  herein,  do not
include any adjustments that might result from the outcome of that uncertainty.


                                        13.
<PAGE>



                                        II-6

No person has been  authorized  in  connection  with the offering made hereby to
give  any  information  or to make  any  representation  not  contained  in this
Prospectus and, if given or made, such information or representation must not be
relied upon as having been authorized by the Company, any Selling Stockholder or
any other  person.  This  Prospectus  does not  constitute an offer to sell or a
solicitation  of an offer to buy any of the  securities  offered  hereby  to any
person or by anyone in any  jurisdiction  in which it is  unlawful  to make such
offer or solicitation. Neither the delivery of this Prospectus nor any sale made
hereunder  shall,  under any  circumstances,  create  any  implication  that the
information  contained  herein is correct as of any date  subsequent to the date
hereof.




                   TABLE OF CONTENTS

                                                 Page

Risk Factors...................................    3

The Company....................................    7

Registration Obligations.......................    9

Selling Stockholders...........................    9

Plan of Distribution...........................   10

Available Information..........................   11

Incorporation of Certain Documents
by Reference...................................   12

Legal Matters..................................   12

Experts........................................   13





                   7,205,022 Shares



                    WASTE SYSTEMS
                  INTERNATIONAL, INC.


                     Common Stock



                      PROSPECTUS














                     __________, 1998









<PAGE>


- -------------------------------------------------------------------------------
                                      PART II.
- -------------------------------------------------------------------------------

                      INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

        The  following  table sets forth an itemized  statement  of all expenses
expected to be incurred in connection with the issuance and  distribution of the
securities being  registered (all of which are estimated,  other than the filing
fee of the Securities and Exchange Commission):

        Securities and Exchange Commission filing fee............   $   12,625
        Legal fees and expenses..................................        7,500
        Accounting fees and expenses.............................        2,000
        Blue sky fees and expenses...............................        5,000
        Miscellaneous............................................   $    5,000
                                                                      ----------
                                                                    $   32,125

Item 15.  Indemnification of Directors and Officers.

        The Delaware General Corporation Law (the "DGCL") empowers a corporation
to  indemnify  any  person who was or is a party or is  threatened  to be made a
party to any  threatened,  pending  or  completed  action,  suit or  proceeding,
whether civil,  criminal,  administrative or investigative (other than an action
by or in the right of the corporation) by reason of the fact that that person is
or was a director,  officer,  employee or agent of the  corporation or is or was
serving at the request of the  corporation as a director,  officer,  employee or
agent  of  another  corporation,  partnership,  joint  venture,  trust  or other
enterprise  (including  employee  benefits  plans) against  expenses  (including
attorneys' fees),  judgments,  fines and amounts paid in settlement actually and
reasonably  incurred  by that person in  connection  with that  action,  suit or
proceeding,  to the  extent  that that  person  (i) acted in good faith and in a
manner that that person reasonably  believed to be in or not opposed to the best
interests of the  corporation  (including  with respect to any employee  benefit
plan  actions in good  faith and in a manner  reasonably  believed  to be in the
interests of the  beneficiaries  of that employee  benefit plan),  and (ii) with
respect to any criminal action or proceeding, had no reasonable cause to believe
that the conduct was unlawful.

        The DGCL also empowers a corporation  to indemnify any person who was or
is a party or is  threatened  to be made a party to any  threatened,  pending or
completed  action or suit by or in the  right of the  corporation  to  procure a
judgment in its favor by reason of the fact that the person  acted in any of the
capacities  set forth  above  (that  is, a  derivative  action or suit)  against
expenses  (including  attorneys' fees) actually and reasonably  incurred by that
person in connection with the defense or settlement of such an action or suit if
that person acted under similar standards, except that no indemnification may be
made in respect of any claim,  issue or matter as to which that  person has been
adjudged to be liable to the corporation unless and to the extent that the Court
of  Chancery  or the court in which the  action or suit was  brought  determines
that, despite the adjudication of liability but in view of all the circumstances
of the case, that person is fairly and reasonably entitled to indemnity for such
expenses as the court deems proper.

                                   II-1

<PAGE>



        The DGCL further  provides  that (i) to the extent a director,  officer,
employee or agent of a  corporation  has been  successful  in the defense of any
action,  suit or  proceeding  referred  to above or in the defense of any claim,
issue or matter in any such  action,  suit or  proceeding,  that person shall be
indemnified against expenses (including attorney's fees) actually and reasonably
incurred by that person in  connection  with that claim,  issue or matter,  (ii)
indemnification  provided  for by the DGCL shall not be deemed  exclusive of any
other  rights  to which  the  indemnified  party  may be  entitled,  and (iii) a
corporation  may  purchase  and  maintain  insurance  on behalf  of a  director,
officer,  employee  or agent of a  corporation  against any  liability  asserted
against  that person or incurred by that person in any such  capacity or arising
out of that person's  status as such whether or not the  corporation  would have
the power to indemnify against such liabilities under the DGCL.


        The  DGCL  also   provides   that   determinations   with   respect   to
indemnification  shall be made (i) by the board of directors of a corporation by
a majority vote of a quorum  consisting of directors who were not parties to the
action,  suit or  proceeding,  (ii) by  independent  legal  counsel in a written
opinion in cases where a quorum is not obtainable, or, even if obtainable when a
quorum of  disinterested  directors so directs,  or (iii) by the stockholders of
the corporation.

        The  DGCL  contains  express  limitations  on the  ability  to  limit or
eliminate   liability  to  a  corporation  or  its  stockholders.   Under  these
limitations,  a director remains  potentially liable for monetary damages to the
corporation  or the  stockholders  for  (i)  breach  of the  director's  duty of
loyalty,  (ii) acts or omissions not in good faith or which involve  intentional
misconduct  or a  knowing  violation  of law,  (iii) an  improper  payment  of a
dividend  or an  improper  repurchase  of the  corporation's  stock and (iv) any
transaction from which a director derives an improper personal benefit.

        Article  VII  of the  Company's  Amended  and  Restated  Certificate  of
Incorporation  (the "Charter")  provides that directors of the Company shall not
be personally liable to the Company or its stockholders for monetary damages for
breach  of  fiduciary  duty,  except  to the  extent  that  the  elimination  or
limitation of liability is not  permitted  under the DGCL as in effect when such
liability  is  determined.  Article X of the Charter  provides  that the Company
shall,  to the fullest  extent  permitted  by the DGCL,  as amended from time to
time,  indemnify each person who was or is a party or is threatened to be made a
party to any  threatened,  pending  or  completed  action,  suit or  proceeding,
whether civil, administrative or investigative,  by reason of the fact that such
person is or was, or has agreed to become, a director or officer of the Company,
or is or was serving,  or has agreed to serve, at the request of the Company, as
a  director,  officer  or trustee  of, or in a similar  capacity  with,  another
corporation,  partnership,  joint venture,  trust or other enterprise,  from and
against all expenses (including attorneys' fees),  judgments,  fines and amounts
paid in settlement  actually and reasonably incurred by such person or on his or
her behalf in connection  with such action,  suit or  proceeding  and any appeal
therefrom.  Indemnification  may  include  payment by the Company of expenses in
defending an action or  proceeding in advance of the final  disposition  of such
action or proceeding upon receipt of any  undertaking by the person  indemnified
to repay such  payment if it is  ultimately  determined  that such person is not
entitled to indemnification, which undertaking may be accepted without reference
to the financial ability of such person to make such payments. The Company shall
not  indemnify any such person  seeking  indemnification  in  connection  with a
proceeding  (or part  thereof)  initiated by such person  unless the  initiation
thereof was approved by the Board of Directors of the Company.


                                   II-2
<PAGE>


        Pursuant to the Company's Bylaws, each officer and non-officer  employee
of the  Company  shall be  indemnified  and held  harmless by the Company to the
fullest  extent  authorized  by the DGCL, as the same exists or may hereafter be
amended  (but, in the case of any such  amendment,  only to the extent that such
amendment  permits the Company to provide broader rights than said law permitted
the Company to provide  prior to such  amendment),  against any and all expenses
incurred  by such  officer  or  non-officer  employee  in  connection  with  any
proceeding in which such officer or non-officer employee is involved as a result
of serving or having served (a) as an officer or employee of the Company, (b) as
a director,  officer or employee of any subsidiary of the Company, or (c) in any
capacity with any other corporation,  organization,  partnership, joint venture,
trust or other  entity at the  written  request  or  direction  of the  Company,
including  service with respect to employee or other  benefit  plans,  and shall
continue as to an officer or non-officer  employee after he or she has ceased to
be an officer or  non-officer  employee and shall inure to the benefit of his or
her heirs,  executors,  administrators and personal  representatives;  provided,
however,  that the  Company  shall  indemnify  any such  officer or  non-officer
employee seeking  indemnification  in connection with a proceeding  initiated by
such officer or non-officer  employee only if such  proceeding was authorized by
the  Board  of  Directors  of  the  Company;   and  further   provided  that  no
indemnification  shall be  provided to an officer or to a  non-officer  employee
with  respect  to a matter as to which  such  person  shall  have  been  finally
adjudicated  in any  proceeding  not to have acted in good faith and in a manner
her or she reasonably  believed to be in, and not opposed to, the best interests
of the Company, and, with respect to any criminal proceeding, had not reasonable
cause to believe his or her conduct was unlawful. In the event that a proceeding
is  compromised  or  settled  prior to final  adjudication  so as to impose  any
liability  or  obligation   upon  an  officer  or   non-officer   employee,   no
indemnification  shall be provided to said officer or non-officer  employee with
respect to a matter if there be a determination that with respect to such matter
such  person  did not act in good  faith  and in a manner  he or she  reasonably
believed to be in, or not opposed to, the best  interests of the  Company,  and,
with respect to any criminal proceeding,  had no reasonable cause to believe his
or her conduct was unlawful.  The  determination  contemplated  by the preceding
sentence  shall be made by (i) a majority  vote of those  Directors  who are not
involved  in  such  proceeding  (the  "Disinterested  Directors");  (ii)  by the
stockholders;  or (iii) if directed by a majority of Disinterested Directors, by
independent  legal counsel in a written opinion.  However,  if more than half of
the Directors are not Disinterested  Directors,  the determination shall be made
by (i) a majority vote of a committee of one or more  Disinterested  Director(s)
chosen by the Disinterested Director(s) at a regular or special meeting; (ii) by
the  stockholders;  or (iii) by independent legal counsel chosen by the Board of
Directors in a written opinion.


        The Company has entered into an  indemnification  agreement  with one of
its directors,  William B. Philipbar.  The  indemnification  agreement requires,
among other  things,  that the Company  indemnify  Mr.  Philipbar to the fullest
extent permitted by law and advance to Mr. Philipbar all related expenses. Under
this  agreement,  the Company  must also  indemnify  and  advance  all  expenses
incurred   by  Mr.   Philipbar   seeking  to  enforce   his  rights   under  the
indemnification agreement, provided Mr. Philipbar prevails. Although the form of
indemnification  agreement  offers  substantially  the same  scope  of  coverage
afforded  by  law,  it  provides  additional  assurance  to Mr.  Philipbar  that
indemnification will be available because, as a contract,  it cannot be modified
unilaterally  in the future by the Board of  Directors  or the  stockholders  to
eliminate  the rights it  provides.  It is the position of the  Commission  that
indemnification  of directors and officers for liabilities  under the Securities
Act is against  public  policy and  unenforceable  pursuant to Section 14 of the
Securities Act.

Item 16.          Exhibits

        4.1       Amended and Restated  Certificate  of  Incorporation  of the
                  Registrant  (previously  filed as an exhibit to Registrant's
                  Registration Statement on Form S-3, No. 333-37217).

        4.2       Bylaws of the Registrant  (previously filed as an exhibit to
                  Registrant's Registration Statement on Form S-3,
                  No. 333-37217).

        4.3       Exchange Agreement,  dated as of December 30, 1997,  regarding
                  10% Convertible, Redeemable, Subordinated Notes due October 6,
                  2000.

        4.4       Registration Rights Agreement, dated as of May 13, 1998.

        5.1       Opinion of Goodwin, Procter & Hoar LLP as to the legality of
                  the Common Stock being registered.

        23.1      Consent of KPMG Peat Marwick L.L.P., Independent Accountants.

        23.2      Consent of Goodwin, Procter & Hoar LLP (included in Exhibit
                  5.1 hereto).

        23.3      Consent of KPMG Peat Marwick L.L.P., Independent Accountants.

        24.1      Power of Attorney (included in the signature page hereto).


                                   II-3
<PAGE>


Item 17. Undertakings


        (a)    The undersigned Registrant hereby undertakes:

               (1)    To file,  during any  period in which  offers or sales are
                      being   made,   a   post-effective   amendment   to   this
                      Registration Statement:

                      (i)    To include any prospectus required by Section 10(a)
                             (3) of the Securities Act;

                      (ii)   To reflect in the  prospectus  any facts or events
                             arising after the effective date of
                             the  Registration  Statement  (or the most recent
                             post-effective  amendment  thereof)
                             which,  individually  or in the  aggregate,
                             represent  a  fundamental  change  in the
                             information set forth in the Registration
                             Statement.  Notwithstanding  the foregoing,
                             any  increase or decrease in volume of  securities
                             offered (if the total dollar value
                             of securities  offered would not exceed that which
                             was  registered)  and any deviation
                             from the low or high and of the estimated  maximum
                             offering range may be reflected in
                             the form of prospectus  filed with the  Commission
                             pursuant to Rule 424(b) if, in the
                             aggregate,  the change in volume and price
                             represent no more than 20 percent change in
                             the maximum  aggregate  offering price set forth in
                             the  "Calculation  of Registration
                             Fee" table in the effective Registration Statement;
                             and

                      (iii)  To include any material information with respect to
                             the plan of distribution  not previously  disclosed
                             in  the  Registration  Statement  or  any  material
                             change  to  such  information  in the  Registration
                             Statement;

        provided,  however,  that paragraphs  (a)(1)(i) and (a)(1)(ii) herein do
        not apply if the information required to be included in a post-effective
        amendment by those  paragraphs is contained in periodic reports filed by
        the  undersigned  Registrant  pursuant to Section 13 or Section 15(d) of
        the Exchange Act that are  incorporated by reference in the Registration
        Statement;

               (2)    That, for the purpose of determining  any liability  under
                      the  Securities  Act, each such  post-effective  amendment
                      shall  be  deemed  to  be  a  new  registration  statement
                      relating  to  the  securities  offered  therein,  and  the
                      offering of such  securities  at that time shall be deemed
                      to be the initial bona fide offering thereof; and

               (3)    To remove from  registration by means of a  post-effective
                      amendment any of the  securities  being  registered  which
                      remain unsold at the termination of the offering.

        (b)    The undersigned  Registrant  hereby undertakes that, for purposes
               of  determining  any  liability  under the  Securities  Act, each
               filing of the  Registrant's  annual  report  pursuant  to Section
               13(a) or  15(d)  of the  Exchange  Act  that is  incorporated  by
               reference in the  Registration  Statement shall be deemed to be a
               new  registration  statement  relating to the securities  offered
               therein,  and the offering of such  securities at that time shall
               be deemed to be the initial bona fide offering thereof.


                                        II-4
<PAGE>



        (c)    Insofar as  indemnification  for  liabilities  arising under the
               Securities Act may be permitted to directors,  officers and
               controlling persons of the Registrant pursuant to the foregoing
               provisions, or  otherwise,  the  Registrant  has  been  advised
               that  in the  opinion  of the  Commission  such
               indemnification  is against  public  policy as expressed in the
               Securities  Act and is,  therefore, unenforceable.  In the event
               that a claim for  indemnification  against such liabilities
               (other than the payment by the Registrant of expenses  incurred
               or paid by a director,  officer,  or controlling
               person of the  Registrant in the successful  defense of any
               action,  suit or proceeding) is asserted
               by such director,  officer or controlling person in connection
               with the securities being registered,
               the  Registrant  will,  unless  in the  opinion  of its  counsel
               the  matter  has been  settled  by
               controlling  precedent,  submit to a court of  appropriate
               jurisdiction  the question  whether such
               indemnification  by it is against  public  policy as expressed in
               the Securities Act and will be governed by the final adjudication
               of such issue.

                                        II-5

<PAGE>




                                         SIGNATURES

        Pursuant  to  the  requirements  of the  Securities  Act  of  1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the  City of  Boston,  The  Commonwealth  of  Massachusetts,  on
September 28, 1998.

                        WASTE SYSTEMS INTERNATIONAL, INC.

                              By:          /s/   Philip  W. Strauss
                                                  ------------------
                                                  Philip W. Strauss
                                                  President

        Known  all men by these  presents,  that  each  person  whose  signature
appears below constitutes and appoints Philip W. Strauss and Robert Rivkin, each
acting singly,  as his or her true and lawful  attorney-in-fact  and agent, with
full power of  substitution,  and from him and in his name,  place and stead, in
any and all  capacities,  to sign  any  and  all  amendments  or  post-effective
amendments  to this  Registration  Statement,  and to file  the  same,  with all
exhibits  thereto  and  other  documents  in  connection  therewith,   with  the
Securities and Exchange Commission, granting unto each of said attorneys-in-fact
and agents,  full power and  authority  to do and perform each and every act and
thing  requisite or necessary to be done in and about the premises,  as fully to
all intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said  attorneys-in-fact and agents, or their substitutes may
lawfully do or cause to be done by virtue thereof.

        Pursuant  to the  requirements  of the  Securities  Act  of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the date indicated.

       Signature                 Title                              Date


 /s/ Philip W. Strauss
     ------------------    President, Chief Executive
                           Officer and  Director              September 28, 1998
     Philip W. Strauss     (Principal Executive Officer)


 /s/ Robert Rivkin
     ---------------       Executive Vice President -
                           Aquisitions, Chief                 September 28, 1998
     Robert Rivkin         Financial Officer and Director
                           (Principal Financial Officer and
                           and Accounting Officer)

 /s/ David Breazzano
     ---------------              Director                   September 28,  1998
     David Breazzano


 /s/ Charles Johnston
     ----------------             Director                    September 28, 1998
     Charles Johnston


 /s/ Jay Matulich
     --------------               Director                    September 28, 1998
     Jay Matulich


 /s/ Judy Mencher
     --------------               Director                    September 28, 1998
     Judy Mencher


 /s/ William B. Philipbar          Director                   September 28, 1998
     --------------------
     William B. Philipbar


<PAGE>


                              Index of Exhibits

4.1      Amended and Restated  Certificate of  Incorporation of the Registrant
         (previously  filed as an exhibit to
         Registrant's Registration Statement on Form S-3, No. 333-37217).

4.2      Bylaws of the Registrant (previously filed as an exhibit to
         Registrant's  Registration  Statement on Form
         S-3, No. 333-37217).

4.3      Exchange  Agreement,  dated as of  December  30,  1997,  regarding  10%
         Convertible, Redeemable, Subordinated Notes due October 6, 2000.

4.4      Registration Rights Agreement, dated as of May 13, 1998.

5.1      Opinion of Goodwin, Procter & Hoar LLP as to the legality of the Common
         Stock being registered.

23.1     Consent of KPMG Peat Marwick L.L.P., Independent Accountants.

23.2     Consent of Goodwin, Procter & Hoar LLP (included in Exhibit 5.1 hereto)

23.3     Consent of KPMG Peat Marwick L.L.P., Independent Accountants.

24.1     Power of Attorney (included in the signature page hereto).


<PAGE>


- ---------------
EXHIBIT  4.3
- ---------------






                         WASTE SYSTEMS INTERNATIONAL, INC.
                         (formerly known as BioSafe, Inc.)

                                 EXCHANGE AGREEMENT



To:      Waste Systems International, Inc.
         10 Fawcett Street
         Cambridge, MA  02138

  Re:      10% Convertible, Redeemable, Subordinated Notes Due October 6, 2000
           -------------------------------------------------------------------

         Reference is made to the above-captioned  Notes (the "Notes") issued by
BioSafe,  Inc.,  formerly a Nevada  corporation and  re-incorporated in Delaware
corporation  as Waste Systems  International,  Inc.  effective  October 27, 1997
(referred to in either case herein as the "Company") in the aggregate  principal
amount of  $8,375,000.  You have  advised the  undersigned  that the Company has
offered to certain  accredited  investors who are holders of Notes,  to exchange
such Notes for shares of Series B Convertible  Preferred Stock,  $.001 par value
per share (the  "Series B  Preferred  Stock"),  of the  Company  (the  "Series B
Shares"),  at an  exchange  price of $100  per  Series  B Share  (the  "Exchange
Price"),  for  consideration  payable in principal amount of and unpaid interest
accrued to the Closing  Date (as defined  herein) and  calculated  on a pro rata
basis  (the  "Pro  Rata   Interest")  on,  the  10%   Convertible,   Redeemable,
Subordinated  Notes due  October 6, 2000 (the  "Notes")  to a holder  exchanging
Notes for Series B Shares (an  "Investor")  pursuant to the terms and conditions
described herein and in the Confidential  Private Exchange  Offering  Memorandum
dated December [ ], 1997 and accompanying this Agreement (the "Exchange Offering
Memorandum"  which,  together with together with this  Agreement  constitute the
"Exchange  Offer") The Exchange  Offer will remain open from  December [ ], 1997
until [ ], unless extended,  by the Company (such date, as extended,  if at all,
the "Expiration Date").

         Based on the foregoing and subject to the terms and  conditions of this
Exchange  Agreement (the "Exchange  Subscription"),  the undersigned agrees with
you as follows:

         1.       Exchange Subscription.



<PAGE>




         The undersigned hereby tenders this Exchange  Subscription and Notes in
the  principal  amount  set  forth on the  signature  page  hereof,  in  minimum
increments of $25,000,  in exchange for a number of Series B Shares equal to (a)
the sum of such principal amount of Notes so tendered plus the Pro Rata Interest
thereon  divided  by (b) the  exchange  price  of 100 per  Series  B Share  (the
"Exchange Price"). In lieu of any fractional Series B Shares,  which will not be
issued,  the Company will pay the  undersigned  at the Closing cash in an amount
equal to the amount of  consideration  described  in clause (a) above  remaining
after  determining  the  integral  number  of Series B Shares  issuable  to such
Investor in the manner described above.

         2.       Acceptance of Exchange Subscription.

         It is  understood  and agreed that this Exchange  Subscription  is made
subject to the following terms and conditions:

                  (a) The Company  shall have the right to accept or reject this
Exchange  Subscription,  in whole  or in part,  for any  reason,  including  the
inability  of the  undersigned  to meet the  standards  imposed by  Regulation D
promulgated by the Securities and Exchange  Commission  under the Securities Act
of 1933, as amended (the "Securities Act"), the ineligibility of the undersigned
to meet the standards imposed by applicable state or foreign securities laws, or
for any  other  reason,  or for no  reason.  If this  Exchange  Subscription  is
rejected,  the Notes  tendered  pursuant to Section 1 hereof will be returned to
the address set forth on the  signature  page by the  undersigned  together with
interest,  if any,  accrued  thereon and payable between the date of such tender
and the date such Notes are  returned  to the  undersigned.  Upon such return of
Notes (and payment of interest as described in the preceding sentence,  if any),
the  undersigned  will have no further  liability  to the Company  other than to
return to the Company the Exchange Offering  Memorandum and other documents,  if
any,  furnished to the  undersigned by or on behalf of the Company in connection
with the Exchange Offer,  and the Company will have no further  liability to the
undersigned arising from the Exchange Offer. Accordingly,  if Notes are tendered
by the  undersigned and returned by the Company during any period in which there
is no interest  payment date arising  under the Notes,  the Company will have no
liability to the  undersigned  arising  from the  Exchange  Offer other than the
return of Notes to the  undersigned  as  described  in this  paragraph,  and the
undersigned  will continue to be entitled  receive  interest  payments under the
terms of the Notes.

                  (b) Two copies of this  Agreement  are being  executed  by the
undersigned.  If accepted,  one copy of this  Agreement  will be retained by the
Company and one copy of this Agreement, after execution by the Company, shall be
delivered to the undersigned.

         3.  Closing of Exchange Offer; Withdrawal of Exchange Offer or
             Exchange Subscription.



<PAGE>




                  (a) The  consummation of the Exchange Offer and the closing of
the  Exchange  (the   "Closing"),   including   delivery  of  the   certificates
representing  the  Series B Shares  and  payment  of cash in lieu of  fractional
Series B Shares with  respect to Notes  tendered  and accepted by the Company in
the Exchange Offer, shall take place on or about [ ], but in any event not later
than one business day after the Expiration Date (as so extended,  if at all, the
"Closing  Date"),  at the  offices of the  Company.  All Notes  tendered  to the
Company in connection  with the Exchange Offer shall be held  unexchanged  until
the Closing Date,  at which time the Company  shall either:  (i) accept any Note
tendered  hereby and issue  Series B Shares and make  payment of cash in lieu of
fractional Series B Shares, if any, to the undersigned;  or (ii) reject any Note
tendered  hereby and return it to the  undersigned,  together with interest,  if
any,  accrued  thereon and payable  between the date of such tender and the date
such Notes are returned,  in each case  pursuant to the terms and  conditions of
the Exchange Offer.


                  (b) The  Exchange  Offer  hereunder  may be  withdrawn  by the
Company for any reason or for no reason.  If the Exchange  Offer is withdrawn by
the Company,  the Company shall promptly return to the holders any and all Notes
previously  tendered to the  Company  hereunder,  and the  Company  will have no
further  liability to the  undersigned  arising from the Exchange Offer upon its
return to the undersigned of such Notes (together with interest, if any, accrued
thereon and payable  between the date of such tender and the date such Notes are
returned to the undersigned).

         4.       Representations and Warranties of the Undersigned.

         The  undersigned  hereby  represents  and  warrants  to the  Company as
follows:

                  (a) all information  provided and representations  made by the
undersigned in the Prospective Investor  Questionnaire (the  "Questionnaire") of
the Company, a form of which  Questionnaire is attached hereto as Exhibit A, are
true and correct in all respects as of the date hereof.

                  (b) The address set forth at the foot of this  Subscription is
the address of the undersigned's  principal residence or place of business,  and
the  undersigned  has no present  intention  of becoming a resident of any other
country, state or jurisdiction.

                  (c) Unless the undersigned  shall have notified the Company to
the contrary in writing prior to or together with the tendering of this Exchange
Subscription,  the undersigned  acknowledges that the undersigned has not relied
upon  the  advice  of  a   "Purchaser   Representative"   (as   defined  in  the
aforementioned  Regulation  D) in  evaluating  the  risks  and  merits  of  this
investment.

                  (d) The  undersigned  has received and read or reviewed and is
familiar  with  the  Exchange  Offering  Memorandum  and its  Exhibits,  and the
undersigned  confirms that all documents,  records,  and books pertaining to the
investment  in the  Company  and  requested  by the  undersigned  have been made
available or delivered to the undersigned.

                  (e) The undersigned has had an opportunity to ask questions of
and  receive  answers  from the  Company,  or a person or persons  acting on the
Company's behalf, concerning the terms and conditions of this investment.



<PAGE>




                  (f)The undersigned understands and acknowledges the following:


                          (i) the  securities for which the  undersigned  hereby
         subscribes in this Exchange Offer  (including any securities into which
         such securities may be converted)  have not been  registered  under the
         Securities  Act or  under  the  securities  laws of any  state or other
         jurisdiction  in reliance upon  exemptions for private  offerings,  and
         that this Exchange Offer has not been passed upon or the merits thereof
         endorsed or approved by any state or federal authorities;

                         (ii) while the Company may in the future  register such
         securities  (or  any  securities  into  which  such  securities  may be
         converted),  it is under no  obligation  to do so,  except as  provided
         herein;

                        (iii) such  securities  (including any  securities  into
         which  such  securities  may be  converted)  cannot  be  resold  unless
         registered  under the Securities Act and any applicable  securities law
         of any state or other  jurisdiction,  or an exemption from registration
         is available;

                         (iv) there can be no assurance  that any public  market
         for  such   securities   (including  any  securities  into  which  such
         securities may be converted) which may currently exist will continue to
         exist in the future;

                          (v) the  undersigned  is  purchasing  such  securities
         without  being  furnished any offering  literature or prospectus  other
         than the Exchange Offering  Memorandum (and the exhibits thereto),  and
         is relying only on the information  contained therein in evaluating the
         risks and merits of this investment; and

                         (vi) no person or entity  has been  authorized  to give
         any  information or make any  representations  in connection  with this
         investment   other  than  that  contained  in  the  Exchange   Offering
         Memorandum (and the exhibits thereto).

                  (g) The securities for which the undersigned hereby subscribes
pursuant to the Exchange Offer are being acquired  solely for the  undersigned's
own  account,  for  investment  and  not  with a  view  to or  for  the  resale,
distribution,  subdivision, or fractionalization thereof; the undersigned has no
present plans to enter into any contract, undertaking, agreement, or arrangement
relating thereto.

                  (h) The undersigned has such knowledge and experience that the
undersigned  is capable of  evaluating  the  matters  set forth in the  Exchange
Offering Memorandum (and the exhibits thereto) and the risks and merits relating
thereto.

                  (i)The undersigned acknowledges and is aware of the following:



<PAGE>



                  (i) the securities offered hereby are a speculative investment
                      which  involves  a high  degree  of  risk  of  loss by the
                      undersigned of the undersigned's  entire investment in the
                      Company; and


                  (ii) no assurances have been given that the  undersigned  will
                       realize any gain from the undersigned's exchange of Notes
                       for Series B Shares  pursuant to the  Exchange  Offer and
                       the  undersigned  may  lose  the   undersigned's   entire
                       investment in the Series B Shares.

                  (j) The  undersigned,  if it is a corporation or other entity,
acknowledges  that it, through the officer(s)  and/or  director(s)  and/or other
employees  responsible  for making an  investment  decision  with regard to this
Exchange  Subscription,  has such  knowledge  and  experience  in financial  and
business  matters that it is capable of evaluating the relative risks and merits
of this  investment,  and  further  acknowledges  that the  representations  and
warranties contained in this Section 4 are true and accurate with respect to it.

         The foregoing  representations  and warranties are true and accurate as
of the date hereof and shall be true and  accurate as of the date of  acceptance
of this Exchange Subscription and delivery of the securities purchased hereunder
and shall survive such delivery.

         5.       Transferability.

         This  Exchange  Subscription,  or  any of  the  undersigned's  interest
herein, may not be transferred or assigned, and any sale, assignment or transfer
of the securities acquired pursuant to the Exchange hereunder shall be made only
in accordance with applicable securities laws.

         6.       Revocation.

         The undersigned agrees that the undersigned shall not cancel, terminate
or revoke this Exchange  Subscription or any agreement of the  undersigned  made
hereunder  except as may be required by  applicable  law, and that this Exchange
Subscription shall survive the death or disability of the undersigned.

         7.       Registration Rights.

         The Company  hereby  grants the  following  rights with  respect to the
shares of Common Stock  issuable  upon  conversion  of the Series B Shares to be
issued to the undersigned in connection with this Exchange Subscription:



<PAGE>




                  (a)  "S-3"  Registrations.  The  Company  shall  use its  best
efforts to  continue  to qualify at all times for  registration  of its  capital
stock on a  Registration  Statement on Form S-3 under the  Securities Act ("Form
S-3") or a  comparable  successor  form,  and to file  within  90 days  from the
Closing Date a registration  statement on Form S-3 (or on such other form as the
Company is then eligible to use under the Securities  Act) for the  registration
of all shares of Common Stock  issuable  upon  conversion of the Series B Shares
issued pursuant to the Exchange Offer.  The Company shall take such steps as are
required  to  register  such  Registrable  Securities  for sale on a delayed  or
continuous basis under Rule 415, and to keep such  registration  effective until
all of such holder's Registrable Securities registered thereunder are sold.
Notwithstanding the foregoing:


                  (i)      the  Company  shall  have no  obligation  to keep any
                           registration  effective  more than 120 days after the
                           initial date of effectiveness  of such  registration;
                           and

                  (ii)     the   Company   may   postpone   the  filing  of  any
                           registration   statement  required  hereunder  for  a
                           reasonable  period of time, not to exceed 90 days, if
                           the Company determines in good faith that such filing
                           would   require   the   disclosure   of  a   material
                           transaction   or  other   factor   and  the   Company
                           determines  reasonably  and in good  faith  that such
                           disclosure  would have a material  adverse  effect on
                           the Company.

         The  obligations  of the Company  under this Section 7 shall expire and
terminate at such time as the holder of Registrable Securities shall be entitled
to sell such securities without restriction and without a need for the filing of
a registration statement under the Securities Act, including without limitation,
for  any  resales  of  restricted  securities  made  pursuant  to  Rule  144  as
promulgated  by the  Securities  and Exchange  Commission.  For purposes of this
Section 7, "Registrable  Securities" shall mean and include the shares of Common
Stock of the Company  issuable upon conversion of the Series B Shares,  pursuant
to the terms of the Series B Preferred Stock, issued to the undersigned pursuant
to the terms of this Exchange Offer.

                  (b) Expenses. In the case of a registration under this Section
7, the  Company  shall bear all costs and  expenses  of each such  registration,
including,  but  not  limited  to,  printing,  legal  and  accounting  expenses;
provided, however, that the Company shall have no obligation to pay or otherwise
bear any portion of the underwriters'  commissions or discounts  attributable to
the Registrable  Securities being offered and sold by the holders of Registrable
Securities  or the fees and  expenses of any counsel for the selling  holders of
Registrable  Securities in connection  with the  registration of the Registrable
Securities.

         8.       Miscellaneous.

                  (a) No Waiver; Cumulative Remedies. No failure or delay on the
part of any party to this Exchange Subscription,  in exercising any right, power
or remedy  hereunder shall operate as a waiver thereof;  nor shall any single or
partial  exercise  of any such  right,  power or  remedy  preclude  any other or
further  exercise  thereof or the exercise of any other  right,  power or remedy
hereunder.  The remedies herein provided are cumulative and not exclusive of any
remedies provided by law.


<PAGE>




                  (b)      Addresses for Notices, etc.  All notices requests,
                           demands and other communications
                           provided for hereunder shall be in writing and
                           mailed, telecommunicated or delivered:


         If to the Company,  to the address set forth above,  Telecopier:  (617)
497-6355,  Attention: Chief Financial Officer, or at such other address as shall
be designated by the Company in a written notice to the undersigned complying as
to delivery with the terms of this Section 8. A copy of all notices, demands and
other  communications  to the  Company  shall be sent to the offices of Goodwin,
Procter & Hoar LLP, Exchange Place, Boston, Massachusetts 02109, Attention:
Thomas P. Storer, P.C.,Telecopier: (617) 523-1231.

         If to the  undersigned,  at its  address as set forth on the  signature
page hereof or at such other address as shall be  designated by the  undersigned
in a written  notice to the Company  complying as to delivery  with the terms of
this Section 8.

         All such notices,  requests,  demands and other  communications  shall,
when mailed,  registered or certified mail,  return receipt  requested,  postage
prepaid,  telecommunicated,  telegraphed or telexed,  respectively, be effective
when  deposited  in  the  mails,  confirmed  received  by  telecommunication  or
delivered  to  the  telegraph  or  telex  company,  respectively,  addressed  as
aforesaid.

                  (c)      Severability.  The invalidity or unenforceability of
                           any provision hereof shall in no way affect the
                           validity or enforceability of any other provision.

                  (d)      Governing Law.  This Exchange Subscription shall be
                           governed by, and construed in accordance with, the
                           laws of The Commonwealth of Massachusetts, without
                           regard to the choice of law principles thereunder.

                  (e) Entire  Agreement;  Amendments.  This  Exchange  Agreement
together  with  all  Exhibits  and  amendments  hereto  constitutes  the  entire
agreement among the parties hereto with respect to the subject matter hereof and
may only be amended by a writing executed by all parties.

                  (f)      Certification.  The undersigned certifies that he has
read the entire Exchange Agreement and every statement on his part and set forth
herein is true and complete.

                     [Remainder of Page Intentionally Left Blank]


<PAGE>




         IN WITNESS  WHEREOF,  the  undersigned  has  executed and sworn to this
Exchange Subscription this ______ day of ____________, 1997.



- ---------------------------------          ------------------------------------
Name of Investor (Please print)                    Signature of Investor
and Capacity in Which
Exchange Subscription is Made

Address of Investor:


- ---------------------------------         ------------------------------------
Number                Street                   Signature of Co-Investor, if Any

- ---------------------------------
City                State          Zip Code

Tel. No. (     )  ___________________

- ---------------------------------
Social Security Number for
Individual or other Taxpayer
Identification Number

Notes:  $___________ Principal Amount of Notes tendered in Exchange Offer at a
        Per Series B Share Exchange Price of $100:

ACCEPTED BY WASTE SYSTEMS INTERNATIONAL, INC.,
this ____ day of ______________, 199__


By:_______________________________________
     Name:
     Title:

Series B Shares:           __________ Series B Shares Issued in the Exchange
                           Offer for the Notes tendered in the
                           principal amount set forth above at an Exchange Price
                           of $100 (Note: calculated on
                           aggregate consideration equal to the sum of
                           $__________ principal amount of and
                           $__________ in Pro Rata Interest on such Notes)

Cash:                     $_____ Cash, if any, issued in lieu of fractional
                          Series B Shares otherwise issuable in exchange for the
                          Notes tendered in the principal amount set
                          forth above at an Exchange Price of $100


<PAGE>




                                     EXHIBIT A


               NAME OF INVESTOR:

                                         PROSPECTIVE INVESTOR QUESTIONNAIRE


                                          Waste Systems International, Inc.
                                                  10 Fawcett Street
                                                Cambridge, MA  02138


         The  securities of Waste Systems  International,  Inc. (the  "Company")
offered by the Company through the Exchange Offer of which the Exchange Offering
Memorandum  is a part,  are being  offered in reliance on Regulation D under the
Securities Act of 1933, as amended  ("Regulation D"), and similar  provisions of
state law. To satisfy the requirements of Regulation D and applicable state law,
the Company must determine whether a prospective investor (the "Investor") meets
Regulation  D and the state law  definitions  of  "accredited  investor"  before
selling  (or,  in  some  states,  offering)  securities  to  such  person.  This
Questionnaire is designed to assist the Company in making this determination.

         Please   complete,   execute   and  date  this   Prospective   Investor
Questionnaire  and deliver it along with an executed  Exchange  Agreement to the
Company at the address set forth above. Your answers will, at all times, be kept
confidential  except as necessary  to  establish  that the offer and sale of the
securities will not result in a violation of applicable law.

1)       To establish the basis of the Investor's status as an accredited
         investor, please answer the questions
         set forth below.

         a)       Is the Investor an individual with a net worth (or net worth
                  with his or her spouse) in excess of $1 million:

                                    Yes                       No


         b)       If the Investor is an individual,  will his or her acquisition
                  of securities of the Company in the offering exceed 25% of the
                  Investor's  net worth (or net worth  with his or her  spouse).
                  For purposes of this Section  1(b),  "net worth"  excludes the
                  value  of  the   Investor's   principal   residence   and  its
                  furnishings.

                                    Yes                       No




<PAGE>




         c)       Is  the  Investor  an  individual  with  net  income  (without
                  including any net income of the  Investor's  spouse) in excess
                  of  $200,000,  or joint income with the  Investor's  spouse in
                  excess of $300,000,  in each of the two most recent years, and
                  does the Investor  reasonably  expect to reach the same income
                  level in the current year?


                                    Yes                       No


         d)       Is the Investor an employee benefit plan within the meaning of
                  the   Employee   Retirement   Income   Security  Act  of  1974
                  (hereinafter  "ERISA") whose decision to invest in the Company
                  is being  made by a plan  fiduciary  which  is  either a bank,
                  savings and loan association,  insurance company or registered
                  investment  adviser  or,  alternatively,   does  the  employee
                  benefit plan have total assets in excess of  $5,000,000  or is
                  the employee  benefit  plan  "self-directed"  with  investment
                  decisions   made  solely  by  person(s)  who  are   accredited
                  investors(s)?

                                    Yes                       No


         e)       Is the Investor a plan  established and maintained by a state,
                  its political  subdivisions,  or any agency or instrumentality
                  of a state or its  political  subdivisions  for the benefit of
                  its employees with total assets in excess of $5,000,000?

                                    Yes                       No


         f)       Is the Investor a trust  (including an  individual  retirement
                  arrangement  formed as a trust or a tax-qualified  pension and
                  profit  sharing  plan (e.g.,  a Keough Plan) formed as a trust
                  but not  subject  to  ERISA)  with  total  assets in excess of
                  $5,000,000  that was not  formed for the  specific  purpose of
                  acquiring  securities  of the  Company  and whose  purchase is
                  directed by a person with such  knowledge  and  experience  in
                  financial and business  matters that such person is capable of
                  evaluating the merits and risks of the prospective investment?

                                    Yes                       No




<PAGE>




         g)       Is the Investor a corporation,  partnership,  Massachusetts or
                  similar business trust or an organization described in Section
                  501(c)(3) of the Internal Revenue Code that was not formed for
                  the specific  purpose of acquiring  securities  of the Company
                  and whose total assets exceed $5,000,000?


                                    Yes                       No


         h)       Is the Investor one of the following entities:

                 (i)       A  "bank"  as  defined  in  Section  3(a)(2)  of  the
                           Securities Act or any "savings and loan  association"
                           or other institution as defined in Section 3(a)(5)(A)
                           of the Securities Act whether acting in an individual
                           or fiduciary capacity;

                (ii)       A "broker/dealer" registered pursuant to Section 15
                           of the Securities Exchange Act of 1934;

               (iii)       An "insurance company," as defined in Section 2(13)
                           of the Securities Act;

                (iv)       An   "investment   company"   registered   under  the
                           Investment   Company  Act  of  1940  or  a  "business
                           development  company" as defined in Section  2(a)(48)
                           of the Investment Company Act of 1940;

                 (v)       A "Small Business Investment Company" licensed by the
                           U.S. Small Business
                           Administration under Section 301(c) or (d) of the
                           Small Business Investment Act of 1958; or

                (vi)       A "Private Business  Development  Company" as defined
                           in Section 202(a)(22) of the Investment  Advisers Act
                           of 1940?

                                    Yes                       No

                           If yes, then which entity (i.e.,  (h)(i) through (vi)
                           above)?






<PAGE>




         i)       Is the Investor an entity  (other than a trust but including a
                  grantor trust and including an investment  retirement account,
                  the  investment  of which is directed by the  beneficiary)  in
                  which all of the equity owners or the beneficiary, as the case
                  may be,  can  answer  "Yes" to any one  question  set forth in
                  Sections 1(a) through 1(h) immediately above?


                                    Yes                       No


2)      Is the Investor acquiring securities of the Company as a principal for
        the purpose of investment and not with a view to resale or distribution?

                                    Yes                       No


3)       By signing this Questionnaire, the Investor hereby confirms the
         following statements:

         a)       The Investor shall immediately provide the Company with
                  corrected information in the event any
                  information given herein was untrue.

         b)       The Investor acknowledges that any delivery to the Investor of
                  a Confidential  Private Exchange Offering Memorandum and other
                  information   relating   to   the   Company,   prior   to  the
                  determination  by  the  Company  of  the  suitability  of  the
                  Investor as an investor in the Company,  shall not  constitute
                  an offer of securities of the Company until such determination
                  of suitability shall be made.

         c)       The answers of the  Investor to the  foregoing  questions  are
                  true and complete to the best of the information and belief of
                  the undersigned, and the Company shall be notified promptly of
                  any changes in the foregoing answers.

                        [Remainder of Page Intentionally Left Blank]


<PAGE>






Signature of Investor                                   Signature of Investor
(or duly authorized agent)                           (or duly authorized agent)



Title:                                                           Title:



Print Name Signed Above                                Print Name Signed Above



Date Signed                                                  Date Signed

<PAGE>



- -------------
EXHIBIT 4.4
- -------------





                   REGISTRATION RIGHTS AGREEMENT

                  This  Registration  Rights Agreement (the "Agreement") is made
and entered into as of May 13, 1998, by and between Waste Systems International,
Inc., a Delaware corporation (the "Company"),  and First Albany Corporation (the
"Initial  Purchaser")  who has  purchased  or has the  right to  purchase  up to
$60,000,000 in aggregate principal amount of the Company's 7% Subordinated Notes
due May 13, 2005 (the "Notes") which shall be convertible into Common Stock upon
the occurrence of certain conditions described therein.

                  This  Agreement is made  pursuant to the  Purchase  Agreement,
dated May 7, 1998,  between the Company and the Initial Purchaser (the "Purchase
Agreement"). In order to induce the Initial Purchaser to enter into the Purchase
Agreement,  the Company has agreed to provide the  registration  rights provided
for in this  Agreement to the Initial  Purchaser and its  respective  direct and
indirect transferees (i) for the benefit of the Initial Purchaser,  (ii) for the
benefit of the  Holders  from time to time of the Notes  (including  the Initial
Purchaser)  and the Holders  from time to time of the Common  Stock  issuable or
issued upon  conversion of the Notes and (iii) for the benefit of the securities
constituting the Transfer Restricted Securities (as such term is defined below).
The  execution  of  this  Agreement  is  a  condition  to  the  closing  of  the
transactions contemplated by the Purchase Agreement.


<PAGE>

                  The parties hereby agree as follow:

1.   Definitions.  As used in this Agreement, the following terms shall have the
     following meanings:


                  Advice:  As defined in Section 2(d) hereof.

                  Affiliate: An affiliate of any specified person shall mean any
other person directly or indirectly controlling or controlled by or under direct
or indirect common control with such specified person.  For the purposes of this
definition,  "control," when used with respect to any person, means the power to
direct the  management  and  policies of such  person,  directly or  indirectly,
whether through the ownership of voting securities, by contract or otherwise and
the terms "affiliated," "controlling" and "controlled" have meanings correlative
to the foregoing.

                  Agreement:  This  Registration  Rights  Agreement,  as the
same may be amended,  supplemented  or modified from time to time in accordance
with the terms hereof.

                  Business Day: Each Monday,  Tuesday,  Wednesday,  Thursday and
Friday that is not a day on which banking institutions in New York, New York are
authorized or obligated by law or executive order to close.

                  Closing Date:  May 13, 1998.

                  Common Stock: Common Stock, $.01 par value, of the Company and
any other shares of common stock as may  constitute  "Common Stock" for purposes
of the Notes, in each case, as issuable or issued upon conversion of the Notes.

                  Company:  Waste  Systems  International,   Inc.,  a  Delaware
corporation,   and  any  successor corporation thereto.

                  Controlling Person:  As defined in Section 6(a) hereof.

                  Effectiveness Period:  As defined in Section 2(a) hereof.

                  Effectiveness Target Date: The 180th day following the receipt
 of the Stockholder Approval.

                  Exchange  Act: The  Securities  Exchange Act of 1934, as
amended, and the rules and  regulations promulgated by the SEC pursuant thereto.

                  Filing Date:  The 60th day after the receipt of the
Stockholder Approval.

                  Holder:  Each owner of any Transfer Restricted Securities.

                  Indemnified Person:  As defined in Section 6(a) hereof.

                  Initial Purchaser:  As defined in the first paragraph hereof.

                  Notes:  As defined in the first paragraph hereof.

                  Proceeding:   An  action,  claim,  suit  or  proceeding
(including,   without  limitation,   an investigation or partial proceeding,
such as disposition), whether commenced or threatened.

                  Prospectus:   The  prospectus  included  in  any  Registration
Statement   (including,   without   limitation,   a  prospectus  that  discloses
information  previously  omitted from a prospectus filed as part of an effective
Registration  Statement in reliance upon Rule 430A  promulgated  pursuant to the
Securities Act), as amended or supplemented by any prospectus  supplement,  with
respect to the resale of any of the Transfer  Restricted  Securities  covered by
such  Registration  Statement,  and all other  amendments and supplements to any
such  prospectus,   including  post-effective   amendments,  and  all  materials
incorporated by reference or deemed to be incorporated by reference,  if any, in
such prospectus.

<PAGE>

                  Purchase Agreement: As defined in the second paragraph hereof.

                  Registration  Statement:  Any  registration  statement  of the
Company filed with the SEC pursuant to the Securities Act that covers the resale
of any of the Transfer Restricted  Securities pursuant to the provisions of this
Agreement,  including  the  Prospectus,   amendments  and  supplements  to  such
registration   statement  or  Prospectus   (including  pre-  and  post-effective
amendments), all exhibits thereto, and all material incorporated by reference or
deemed to be incorporated by reference, if any, in such registration statement.

                  Rule 144:  Rule 144  promulgated  by the SEC  pursuant  to the
Securities  Act, as such Rule may be amended from time to time, or any successor
rule or regulation.

                  Rule 144A:  Rule 144A  promulgated  by the SEC pursuant to the
Securities  Act, as such Rule may be amended from time to time, or any successor
rule or regulation.

                  Rule 158:  Rule 158  promulgated  by the SEC  pursuant  to the
Securities  Act, as such Rule may be amended from time to time, or any successor
rule or regulation.

                  Rule 174:  Rule 174  promulgated  by the SEC  pursuant  to the
Securities  Act, as such Rule may be amended from time to time, or any successor
rule or regulation.

                  Rule 415:  Rule 415  promulgated  by the SEC  pursuant  to the
Securities  Act, as such Rule may be amended from time to time, or any successor
rule or regulation.

                  Rule 424:  Rule 424  promulgated  by the SEC  pursuant  to the
Securities  Act, as such Rule may be amended from time to time, or any successor
rule or regulation.

                  Sale Notice:  As defined in Section 2(d) hereof.

                  SEC:  The Securities and Exchange Commission.

                  Securities  Act:  The  Securities  Act of  1933,  as  amended,
and  the  rules  and  regulations promulgated by the SEC thereunder.

                  Shelf Registration Statement:  As defined in Section 2(a)
hereof.

                  Special  Counsel:  Such  special  counsel as the Holders of
Transfer  Restricted  Securities  may from time to time appoint.

                  Stockholder  Approval.  The  approval  of the  Company's
stockholders  of the terms of the Notes which permit conversion of the Notes
into Common Stock.

                  Transfer  Restricted  Securities:  The shares of Common  Stock
into  which the Notes are  converted  or  convertible  (including  any shares of
Common   Stock  issued  or  issuable   thereon  upon  any  stock  split,   stock
combinations,  stock dividend or the like), upon original issuance thereof,  and
at all times subsequent  thereto,  and associated related rights, if any, until,
in the case of any such shares of Common Stock (and  associated  rights) (i) the
date on which the resale thereof has been registered effectively pursuant to the
Securities  Act and such shares have been  disposed  of in  accordance  with the
Registration  Statement  relating thereto,  (ii) the date on which the shares of
Common Stock issued upon  conversion of such Note are  distributed to the public
pursuant to Rule 144 (or any similar  provisions  then in effect) or are salable
pursuant to Rule 144(k) promulgated by the SEC pursuant to the Securities Act or
(iii) the date on which such shares cease to be  outstanding,  whichever date is
earliest.

<PAGE>

                  Underwritten   Registration   or  Underwritten   Offering:   A
registration in connection  with which  securities of the Company are sold to an
underwriter for reoffering to the public  pursuant to an effective  Registration
Statement.

                  References  herein  to the  term  "Holders  of a  majority  in
aggregate  principal  amount of Transfer  Restricted  Securities"  or words to a
similar  effect  shall  mean,  with  respect  to any  request,  notice,  demand,
objection  or other  action by the  holders of  Transfer  Restricted  Securities
hereunder or pursuant hereto (each, an "Act"), registered holders of a number of
shares  of  then  outstanding  Common  Stock  constituting  Transfer  Restricted
Securities  and  an  aggregate   principal  amount  of  then  outstanding  Notes
constituting Transfer Restricted Securities, such that the sum of such shares of
Common Stock and the shares of Common Stock  issuable  upon  conversion  of such
Notes  constitute  in  excess  of 50% of the sum of all of the then  outstanding
shares of Common  Stock  constituting  Transfer  Restricted  Securities  and the
number of shares of Common Stock  issuable upon  conversion of then  outstanding
Notes  constituting  Transfer  Restricted   Securities.   For  purposes  of  the
immediately  preceding  sentence,  (i) any Holder may elect to take any Act with
respect to all or any portion of Transfer  Restricted  Securities held by it and
only the  portion  as to  which  such Act is  taken  shall  be  included  in the
numerator of the fraction  described in the preceding sentence and (ii) Transfer
Restricted  Securities  owned,  directly  or  indirectly,  by the Company or its
direct or indirect subsidiaries shall be deemed not to be outstanding.

2.                Shelf Registration Statement.

(a) The Company agrees to file with the SEC as soon as practicable after receipt
of the  Stockholder  Approval,  but in no event  later than the Filing  Date,  a
Registration Statement for an offering to be made on a continuous basis pursuant
to Rule 415  covering the resale of all of the  Transfer  Restricted  Securities
(the "Shelf Registration Statement").  The Shelf Registration Statement shall be
on Form S-3 under the Securities Act or another appropriate form selected by the
Company  permitting  registration  of such Transfer  Restricted  Securities  for
resale by the  Holders in the manner or manners  reasonably  designated  by them
(including, without limitation, one or more underwritten offerings). The Company
shall not permit any securities other than the Transfer Restricted Securities or
persons holding  registration  rights in connection with the Company's Preferred
Stock  who  exercise  those  rights  in  order  to  be  included  in  the  Shelf
Registration  Statement.  The Company shall use all reasonable  efforts to cause
the Shelf  Registration  Statement  to be  declared  effective  pursuant  to the
Securities  Act as promptly as  practicable  following the filing thereof and to
keep  the  Shelf  Registration   Statement   continuously  effective  under  the
Securities  Act  for  24  months  (or 48  months  in the  case  of any  Transfer
Restricted  Securities  held by anyone who may be deemed to be an  affiliate  as
defined in the Act for  purposes  of Rule 144 under the Act)  after the  Closing
Date (subject to extension pursuant to Sections 2(a), 2(b) and 2(d) hereof) (the
"Effectiveness  Period"),  or such shorter period ending when there ceases to be
outstanding any Transfer Restricted Securities;  provided that the Company shall
not be  deemed  to have  kept a  Registration  Statement  effective  during  the
applicable  period  if it  voluntarily  takes or fails to take any  action  that
results in selling  Holders covered thereby not being able to sell such Transfer
Restricted  Securities  pursuant to Federal  securities  laws during that period
(and the time period  during  which such  Registration  Statement is required to
remain effective  hereunder shall be extended by the number of days during which
such selling Holders are not able to sell Transfer Restricted Securities).

<PAGE>


(b) Supplements and Amendments.  The Company shall use its reasonable efforts to
keep the Shelf Registration  Statement  continuously  effective by supplementing
and  amending  the  Shelf  Registration  Statement  if  required  by the  rules,
regulations or instructions  applicable to the  registration  form used for such
Shelf  Registration  Statement,  if  required  by  the  Securities  Act,  or  if
reasonably  requested by the Holders of a majority in aggregate principal amount
of the Transfer  Restricted  Securities or by any  underwriter  of such Transfer
Restricted Securities;  provided that the Effectiveness Period shall be extended
to the  extent  required  to  permit  dealers  to  comply  with  the  applicable
prospectus  delivery  requirements of Rule 174 and as otherwise provided herein.
(c) Selling Securityholder  Information.  The Company may require each Holder of
Transfer  Restricted  Securities to be sold  pursuant to the Shelf  Registration
Statement to furnish to the Company such  information  regarding  the Holder and
the distribution of the Transfer  Restricted  Securities as the Company may from
time  to  time  reasonably  require  for  inclusion  in the  Shelf  Registration
Statement,  and the Company  may exclude  from such  registration  the  Transfer
Restricted  Securities  of any Holder  who  unreasonably  fails to furnish  such
information  within a reasonable time after receiving such request.  Each Holder
of Transfer  Restricted  Securities to be sold pursuant to a Shelf  Registration
Statement  further agrees to furnish to the Company all information  required to
be  disclosed  in order  to make the  information  previously  furnished  to the
Company by such Holder not misleading. (d) Certain Notices; Suspension of Sales.
Each Holder agrees by its acquisition of such Transfer Restricted  Securities to
notify the  Company (a "Sale  Notice")  not later than three (3)  Business  Days
prior to any  proposed  sale by such  Holder of Transfer  Restricted  Securities
pursuant to the Shelf  Registration  Statement,  which notice shall be effective
for five (5) Business Days. The Company may, upon written notice to such Holder,
suspend  such  Holder's  use of the  Prospectus  (which  is  part  of the  Shelf
Registration Statement) for a reasonable period not to exceed sixty (60) days if
the  Company  in  its  reasonable  judgment  believes  it may  possess  material
non-public  information  the  disclosure  of which at that  point in time in its
reasonable  judgment would have a material adverse effect on the Company and its
subsidiaries taken as a whole. Each Holder further agrees by acquisition of such
Transfer Restricted Securities that, upon receipt of any notice from the Company
of the  happening  of any  event  of the kind  described  in  Section  4(c)(ii),
4(c)(iii),  4(c)(v) or 4(c)(vi) hereof,  such Holder will forthwith  discontinue
disposition of such Transfer Restricted  Securities covered by such Registration
Statement or Prospectus (other than in transactions exempt from the registration
requirements under the Securities Act) until such Holder's receipt of the copies
of the supplemented or amended  Prospectus  contemplated by Section 4(j) hereof,
or until it is advised in writing (the  "Advice") by the Company that the use of
the  applicable  Prospectus  may be resumed,  and, in either case,  has received
copies of any additional or supplemental filings that are incorporated or deemed
to be  incorporated by reference in such  Prospectus.  If the Company shall give
any such  notice,  the  Effectiveness  Period shall be extended by the number of
days during such period from and including the date of the giving of such notice
to and including the date when each Holder shall have received (x) the copies of
the  supplemented or amended  Prospectus  contemplated by Section 4(j) hereof or
(y) the Advice,  and, in either case,  has received  copies of any additional or
supplemental  filings  that are  incorporated  or deemed to be  incorporated  by
reference in such Prospectus.  (e) Compliance. The Company shall cause the Shelf
Registration  Statement  and the  Prospectus  and any  amendment  or  supplement
thereto, as of the effective date of the Shelf Registration Statement, amendment
or  supplement,  (i) to  comply in all  material  respects  with the  applicable
requirements  of the Securities Act and the rules and regulations of the SEC and
(ii) except with respect to information  provided by any Holder,  not to contain
any  untrue  statement  of a  material  fact or omit to  state a  material  fact
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  (f) As a condition to its receipt of the benefits  conferred  under
this Agreement, each Holder shall agree (a) to cooperate with the Company and to
furnish to the Company all such  information in connection  with the preparation
of the  Registration  Statement  and  any  filings  with  any  state  securities
commissions as the Company may reasonably request, (b) to the extent required by
the Securities Act, to deliver or cause delivery of the prospectus  contained in
the  Registration  Statement  to any  purchaser  of the  shares  covered  by the
Registration  Statement  from the  Holder,  and (c) to notify the Company of any
sale  of  Transfer  Restricted  Securities  by  such  Holder.  (g)  If  (i)  the
Registration  Statement  required by this Agreement is not filed with the SEC on
or prior  to the  Filing  Date,  (ii) the  Registration  Statement  has not been
declared  effective by the SEC on or prior to the Effectiveness  Target Date, or
(iii)  the  Registration  Statement  required  by this  Agreement  is filed  and
declared  effective  but shall  thereafter  cease to be  effective or fail to be
usable for its intended  purpose prior to the expiration of the applicable  time
period  specified by this  Agreement  without being  succeeded  immediately by a
post-effective  amendment to such Registration Statement that cures such default
that is itself declared  effective  immediately  (each such event referred to in
clauses (i) through  (iii),  a  "Registration  Default",  and each period during
which a  Registration  Default has occurred and is continuing,  a  "Registration
Default Period"), then the Company shall pay to each holder of Notes or Transfer
Restricted Securities related to such Notes effective thereby liquidated damages
("Liquidated  Damages") in addition to the base  interest  that would  otherwise
accrue on such  Notes,  with  respect  to the first  90-day  period  immediately
following the occurrence of the first Registration  Default,  an amount equal to
$.05 per week per  $1,000  principal  amount of Notes held by such  Holder.  The
amount of Liquidated  Damages will  increase by an additional  $.05 per week per
$1,000 principal  amount of Notes with respect to each subsequent  90-day period
until  all  Registration  Defaults  have been  cured up to a  maximum  amount of
Liquidated  Damages  of $.50 per week per  $1,000  principal  amount  of  Notes.
Notwithstanding  anything to the contrary set forth  herein,  (x) upon filing of
the Registration  Statement in the case of (i) above, (y) upon the effectiveness
of the Registration Statement, in the case of (ii) above, or (z) upon the filing
of a  post-effective  amendment to the  Registration  Statement or an additional
Registration  Statement  that  causes  the  Registration  Statement  to again be
declared  effective  or made usable in the case of (iii)  above,  the accrual of
Liquidated  Damages  payable  with  respect to the Notes or Transfer  Restricted
Securities with respect thereto as a result of such cause (i), (ii) or (iii), as
applicable,  shall  cease.  All accrued  Liquidated  Damages will be paid by the
Company  to the  Holders  entitled  thereto,  in the manner and at such times as
provided  for the  payment  of  interest  as more  fully set forth in the Notes.
Notwithstanding  the fact that any securities for which  Liquidated  Damages are
due  cease to be  Transferred  Restricted  Securities,  all  obligations  of the
Company to pay Liquidated Damages with respect to securities shall survive until
such time as such  obligations  with respect to such securities  shall have been
satisfied in full.

<PAGE>


3.  Suspension  of  Rights.  If,  and for so long as (a) the Shelf  Registration
Statement is not filed with the Commission on or prior to the Filing Date or (b)
the  Shelf  Registration  Statement  has  not  been  declared  effective  by the
Commission  on or  prior to the  Effectiveness  Target  Date  (each  such  event
referred to in clauses (a) and (b) of this paragraph, a "Registration Default"),
then the Notes will not be subject to mandatory  conversion in  accordance  with
the terms of the Notes;  provided,  however,  that upon the effectiveness of the
Shelf  Registration  Statement,  the Notes  will  become  subject  to  mandatory
conversion in accordance with the terms of the Notes.

4.  Registration  Procedures.  In  connection  with the  Company's  registration
obligations  hereunder,  the  Company  shall  effect such  registrations  on the
appropriate form selected by the Company  available for the sale of the Transfer
Restricted  Securities to permit the sale of Transfer  Restricted  Securities in
accordance  with the intended  method(s) of  disposition  thereof,  and pursuant
thereto the Company shall as expeditiously  as possible:  (a) No fewer than five
Business  Days  prior to the  initial  filing  of a  Registration  Statement  or
Prospectus  and no fewer  than two  Business  Days  prior to the  filing  of any
amendment  or  supplement   thereto   (including  any  document  that  would  be
incorporated or deemed to be incorporated therein by reference),  furnish,  upon
request,  to the registered (as of the most recent  reasonably  practicable date
which shall not be more than two Business  Days prior to the date such notice is
personally delivered,  delivered to a next-day courier, deposited in the mail or
telecopied,  as the case may be)  Holders,  and to the  Special  Counsel and the
managing  underwriters,  if any,  copies of all such  documents  proposed  to be
filed,   which  documents   (including  those   incorporated  or  deemed  to  be
incorporated  by  reference)  will be  subject  to the  review of such  Holders,
Special  Counsel and such  underwriters,  if any. The Company shall not file any
such  Registration   Statement  or  related  Prospectus  or  any  amendments  or
supplements  thereto to which the Holders of a majority in  aggregate  principal
amount of the Transfer Restricted  Securities,  Special Counsel, or the managing
underwriters,  if any,  shall  reasonably  object  within five  Business Days of
receipt of all documents  proposed to be filed in the event of an initial filing
and within two  Business  Days of such  receipt  in the event of  amendments  or
supplemental filing.

(b)  Prepare  and file  with the SEC such  amendments,  including  posteffective
amendments,  to each  Registration  Statement  as may be  necessary to keep such
Registration Statement continuously effective for the applicable time period set
forth  in  Section  2(a)  hereof;   and  cause  the  related  Prospectus  to  be
supplemented by any required Prospectus supplement, and as so supplemented to be
filed  pursuant  to Rule 424 (or any similar  provisions  then in force) and the
Exchange Act with respect to the  disposition of all securities  covered by such
Registration  Statement  during  such  period in  accordance  with the  intended
methods of  disposition  by the sellers  thereof set forth in such  Registration
Statement as so amended or in such Prospectus as so supplemented; (c) Notify the
registered (as of the most recent reasonably practicable date which shall not be
more  than two  Business  Days  prior  to the date  such  notice  is  personally
delivered, delivered to a next-day courier, deposited in the mail or telecopied,
as the case may be)  Holders of  Transfer  Restricted  Securities  to be sold or
Special Counsel and the managing underwriters, if any, promptly (and in the case
of an event  specified by clause (i)(A) of this paragraph in no event fewer than
two Business Days prior to such filing),  and (if requested by any such person),
confirm  such notice in  writing,  (i)(A) when a  Prospectus  or any  Prospectus
supplement or  post-effective  amendment is proposed to be filed,  and, (B) with
respect to a Registration  Statement or any post-effective  amendment,  when the
same has become  effective,  (ii) of any request of the SEC or any other Federal
or state governmental  authority for amendments or supplements to a Registration
Statement or related Prospectus or for additional  information  related thereto,
(iii) of the issuance by the SEC,  any state  securities  commission,  any other
governmental  agency  or any  court  of any  stop  order,  order  or  injunction
suspending or enjoining the use or the effectiveness of a Registration Statement
or the initiation of any proceedings  for that purpose,  (iv) if at any time any
of the  representations and warranties of the Company contained in any agreement
(including any underwriting  agreement)  contemplated by Section 4(1) hereof are
not true and correct in all material respects, (v) of the receipt by the Company
of any  notification  with respect to the  suspension  of the  qualification  or
exemption from  qualification of any of the Transfer  Restricted  Securities for
sale in any jurisdiction, or the initiation or threatening of any proceeding for
such  purpose,  and (vi) of the  existence of any fact and the  happening of any
event that makes any statement  made in such  Registration  Statement or related
Prospectus  untrue in any material  respect,  or that requires the making of any
changes in such Registration  Statement or Prospectus so that in the case of the
Registration  Statement,  it will not contain any untrue statement of a material
fact or omit to state  any  material  fact  required  to be  stated  therein  or
necessary to make the statements therein not misleading and that, in the case of
the  Prospectus,  such  Prospectus  will not contain any untrue  statement  of a
material fact or omit to state any material  fact required to be stated  therein
or necessary to make the statements therein, in light of the circumstances under
which they were made, not  misleading;  (d) Use all reasonable  efforts to avoid
the issuance of, or, if issued,  obtain the withdrawal of any order enjoining or
suspending the use or effectiveness  of a Registration  Statement or the lifting
of any suspension of the qualification (or exemption from  qualification) of any
of the  Transfer  Restricted  Securities  for sale in any  jurisdiction,  at the
earliest  practicable  moment; (e) Subject to Section 2(c) hereof, if reasonably
requested by the managing underwriters,  if any, or the Holders of a majority in
aggregate principal amount of the Transfer  Restricted  Securities being sold in
connection  with  such  offering,  (i)  promptly  incorporate  in  a  Prospectus
supplement  or  post-effective   amendment  such  information  as  the  managing
underwriters,  if any, and such Holders  agree should be included  therein,  and
(ii)  make  all  required   filings  of  such  Prospectus   supplement  or  such
post-effective  amendment as soon as practicable  after the Company has received
notification of the matters to be incorporated in such Prospectus  supplement or
post-effective  amendment;  provided,  however,  that the  Company  shall not be
required to take any action  pursuant to this  Section  4(e) that would,  in the
opinion of counsel for the  Company,  create  substantial  risk of  violation of
applicable law; (f) Furnish to each Holder who so requests,  Special Counsel and
each managing  underwriter,  if any, without charge, at least one conformed copy
of each Registration  Statement and each amendment thereto,  including financial
statements (but excluding schedules,  all documents incorporated or deemed to be
incorporated therein by reference and all exhibits,  unless requested in writing
by such Holder, counsel or managing underwriter); (g) Deliver to each Holder who
so requests,  Special Counsel, and the underwriters,  if any, without charge, as
many  copies  of  the  Prospectus  or  Prospectuses   (including  each  form  of
prospectus)  and each  amendment  or  supplement  thereto as may  reasonably  be
requested  and,  unless  the  Company  shall have  given  notice to such  Holder
pursuant to Sections  4(c)(ii),  (iii), (v) or (vi), the Company hereby consents
to the use of such  Prospectus and each amendment or supplement  thereto by each
of the selling Holders of Transfer  Restricted  Securities and the underwriters,
if any, in  connection  with the offering  and sale of the  Transfer  Restricted
Securities  covered by such Prospectus and any amendment or supplement  thereto;
(h) Prior to any public  offering of  Transfer  Restricted  Securities,  use all
reasonable  efforts to  register or qualify,  or  cooperate  with the Holders of
Transfer Restricted  Securities to be sold, the managing  underwriters,  if any,
and  such   underwriters'   counsel  in  connection  with  the  registration  or
qualification (or exemption from such  registration or  qualification)  of, such
Transfer  Restricted  Securities for offer and sale under the securities or Blue
Sky laws of such  jurisdictions  within  the  United  States  as any  Holder  or
underwriter  reasonably  requests in  writing,  keep each such  registration  or
qualification  (or  exemption   therefrom)  effective  during  the  period  such
Registration Statement is required to be kept effective and do any and all other
acts or things  reasonably  necessary  legally to enable the disposition in such
jurisdictions of the Transfer  Restricted  Securities  covered by the applicable
Registration Statement; provided, however that the Company shall not be required
to qualify generally to do business in any jurisdiction  where it is not then so
qualified or take any action that would subject it to general service of process
in any such jurisdiction where it is not then so subject; (i) In connection with
any sale or transfer of Transfer Restricted  Securities that will result in such
securities  no longer  being  Transfer  Restricted  Securities,  and  unless any
Transfer Restricted  Securities shall be in only book-entry form, cooperate with
the Holders and the managing underwriters,  if any, to (A) facilitate the timely
preparation  and  delivery  of  certificates  representing  Transfer  Restricted
Securities  to be sold,  which  certificates  shall  not  bear  any  restrictive
legends,  shall  bear a CUSIP  number  different  from the CUSIP  number for the
Transfer Restricted  Securities and shall be in a form eligible for deposit with
The Depository Trust Company and (B) enable such Transfer Restricted  Securities
to be in such  denominations  and  registered  in  such  names  as the  managing
underwriters, if any, or Holders may request at least two Business Days prior to
any sale of Transfer Restricted Securities; (j) Upon the occurrence of any event
contemplated by Section 4(c)(vi) hereof,  as promptly as practicable,  prepare a
supplement or amendment,  including, if appropriate, a post-effective amendment,
to each Registration  Statement or a supplement to the related Prospectus or any
document  incorporated  or deemed to be incorporated  therein by reference,  and
file  any  other  required  document  so that,  as  thereafter  delivered,  such
Prospectus  will not contain an untrue  statement of a material  fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not  misleading;  (k)  Prior to the  effective  date of the  first  Registration
Statement  relating to the Transfer  Restricted  Securities,  to provide a CUSIP
number  for  the  Transfer  Restricted  Securities  to be sold  pursuant  to the
Registration   Statement;   (l)  Enter  into  such   agreements   (including  an
underwriting  agreement  in  form,  scope  and  substance  as  is  customary  in
underwritten offerings) reasonably satisfactory to the Company and take all such
other  reasonable  actions in connection  therewith  (including those reasonably
requested by the managing underwriters,  if any, or the Holders of a majority in
aggregate principal amount of the Transfer Restricted  Securities being sold) in
order to expedite or facilitate  the  disposition  of such  Transfer  Restricted
Securities, and in such connection, if an underwriting agreement is entered into
and  the   registration   is  an  underwritten   registration,   (i)  make  such
representations  and  warranties  to the  Holders  of such  Transfer  Restricted
Securities  and the  underwriters,  if any,  with respect to the business of the
Company and its  subsidiaries  (including  with respect to  businesses or assets
acquired  or to be  acquired by any of them),  and the  Registration  Statement,
Prospectus and documents,  if any,  incorporated or deemed to be incorporated by
reference therein, in each case, in form, substance and scope as are customarily
made by  issuers  to  underwriters  in  underwritten  offerings  and  reasonably
acceptable to the Company, and confirm the same if and when requested; (ii) seek
to obtain  opinions of counsel to the Company and updates  thereof which counsel
and opinions (in form, scope and substance) shall be reasonably  satisfactory to
the managing  underwriters,  if any,  and Special  Counsel to the Holders of the
Transfer Restricted  Securities being sold,  addressed to each selling Holder of
Transfer  Restricted  Securities and each of the underwriters,  if any, covering
the matters customarily covered in opinions requested in underwritten  offerings
(including  any such  matters as may be  reasonably  requested  by such  Special
Counsel and underwriters);  (iii) use all reasonable efforts to obtain customary
"cold comfort" letters and updates thereof from the independent certified public
accountants of the Company (and, if necessary,  any other independent  certified
public  accountants of any subsidiary of the Company or of any business acquired
or to be acquired by the Company for which  financial  statements  and financial
data  is,  or is  required  to  be,  included  in the  Registration  Statement),
addressed  (where  reasonably  possible)  to each  selling  Holder  of  Transfer
Restricted  Securities and each of the underwriters,  if any, such letters to be
in customary form and covering matters of the type customarily  covered in "cold
comfort"  letters  in  connection  with  underwritten  offerings;   (iv)  if  an
underwriting  agreement is entered into, the same shall contain  indemnification
provisions and  procedures no less favorable to the selling  Holders of Transfer
Restricted  Securities  and the  underwriters,  if any,  than those set forth in
Section 6 hereof (or such other provisions and procedures  acceptable to Holders
of  a  majority  in  aggregate  principal  amount  of  the  Transfer  Restricted
Securities covered by such Registration  Statement and the managing underwriters
as required by law); and (v) deliver such documents and  certificates  as may be
reasonably  requested by the Holders of a majority in aggregate principal amount
of the  Transfer  Restricted  Securities  being  sold,  Special  Counsel  or the
managing  underwriters,  if any,  to  evidence  the  continued  validity  of the
representations  and warranties made pursuant to clause (i) of this Section 4(l)
and to  evidence  compliance  with any  customary  conditions  contained  in the
underwriting  agreement  or  other  agreement(s)  entered  into by the  Company;
provided,  however,  notwithstanding  the  foregoing,  the Company  shall not be
required to enter into more than two underwriting agreements. (m) Make available
for  inspection  by a  representative  of the  Holders  of  Transfer  Restricted
Securities being sold, any underwriter  participating in any such disposition of
Transfer  Restricted  Securities,  if  any,  and  any  attorney,  consultant  or
accountant retained by such selling Holders or underwriter, at the offices where
normally  kept,  during  reasonable  business  hours,  all  financial  and other
records,  pertinent  corporate  documents and  properties of the Company and its
subsidiaries as they may reasonably request and as shall be reasonably necessary
to enable them to exercise their due diligence  responsibility  (including  with
respect to  business  and assets  acquired  or to be acquired to the extent that
such  information  is  available  to  the  Company),  and  cause  the  officers,
directors,  agents and employees of the Company and its subsidiaries  (including
with  respect to business  assets  acquired or to be acquired to the extent that
such  information is available to the Company) to supply all information in each
case reasonably  requested by any such  representative,  underwriter,  attorney,
consultant or accountant and as shall be reasonably  necessary to enable them to
exercise their due diligence responsibility in connection with such Registration
Statement;  provided,  however,  that any information  that is reasonably and in
good faith  designated by the Company in writing as  confidential at the time of
delivery of such  information  shall be kept  confidential  by such persons (and
such  persons  shall  so  agree  in  writing),  unless  (i)  disclosure  of such
information  is required by court or  administrative  order or is  necessary  to
respond  to  inquiries  of  regulatory  authorities,  (ii)  disclosure  of  such
information is required by law (including any disclosure  requirements  pursuant
to Federal  securities  laws in connection  with the filing of any  Registration
Statement or the use of any  prospectus  referred to in this  Agreement),  (iii)
such  information  becomes  generally  available  to the public  other than as a
result of a  disclosure  or failure to safeguard by any such person or (iv) such
information  becomes  available  to any such person from a source other than the
Company and such source is not bound by a confidentiality  agreement; (n) Comply
with applicable rules and regulations of the SEC and make generally available to
its security  holders  earning  statements  satisfying the provisions of Section
11(a) of the Securities Act and Rule 158 (or any similar rule promulgated  under
the Securities  Act), no later than 45 days after the end of any 12-month period
(or 90 days  after the end of any  12-month  period  if such  period is a fiscal
year),  commencing  on the  first  day of the  first  fiscal  quarter  after the
effective date of a Registration  Statement,  which  statement  shall cover said
period,  consistent  with the  requirements  of Rule  158;  and (o) (i) list all
Common Stock covered by such Registration  Statement on any securities  exchange
on which the Common Stock is then listed or (ii)  authorize for quotation on The
Nasdaq  Small-Cap  System (or the principal  market on which the Common Stock is
then  trading) all Common Stock  covered by such  Registration  Statement if the
Common Stock is then so authorized for quotation. 5. Registration Expenses.

<PAGE>

(a) All fees and expenses incident to the performance of or compliance with this
Agreement  by the  Company  shall  be borne by the  Company  whether  or not any
Registration  Statement  is filed or becomes  effective  and  whether or not any
securities are issued or sold pursuant to any Registration  Statement.  The fees
and  expenses  referred to in the  foregoing  sentence  shall  include,  without
limitation, (i) all registration and filings fees (including without limitation,
fees and expenses  incurred (A) with respect to filings required to be made with
the National Association of Securities Dealers,  Inc. and (B) in compliance with
securities  or  Blue  Sky  laws,  (ii)  printing  expenses  (including,  without
limitation, expenses of printing certificates for Transfer Restricted Securities
in a form eligible for deposit with The Depository Trust Company and of printing
Prospectuses  if the  printing  of  Prospectuses  is  required  by the  managing
underwriters,  if any, or by the Holders of a majority  in  aggregate  principal
amount  of the  Transfer  Restricted  Securities  included  in any  Registration
Statement),  (iii)  messenger,  telephone and delivery  expenses,  (iv) fees and
disbursements  of counsel for the  Company  and Special  Counsel for the Holders
(plus any local  counsel  reasonably  deemed  appropriate  by the  Holders  of a
majority in aggregate principal amount of the Transfer Restricted Securities) in
accordance   with  the   provisions  of  Section  5(b)  hereof,   (v)  fees  and
disbursements  of all independent  certified public  accountants  referred to in
Section 4(1)(iii)  (including,  without limitation,  the expenses of any special
audit and "cold comfort" letters  required by or incident to such  performance),
(vi)  Securities  Act  liability  insurance,  if the  Company  so  desires  such
insurance,  and (vii) fees and  expenses  of all other  persons  retained by the
Company. In addition,  the Company shall pay its internal expenses,  the expense
of an annual audit,  and the fees and expenses  incurred in connection  with the
listing  of  the  securities  to  be  registered  on  any  securities  exchange.
Notwithstanding  the  foregoing or anything in this  Agreement to the  contrary,
each  Holder  shall  pay  all  underwriting  discounts  and  commissions  of any
underwriters  and taxes of any kind  (including  transfer taxes) with respect to
any Transfer Restricted Securities sold by it.

(b) In connection with any registration  hereunder,  the Company shall reimburse
the Holders of the  Transfer  Restricted  Securities  being  registered  in such
registration  for the  fees  and  disbursements  of not  more  than  one firm of
attorneys  representing  the selling Holders (in addition to any local counsel),
which firm shall be chosen by the Holders of a majority in  aggregate  principal
amount of the Transfer Restricted  Securities.  Brown,  Rudnick,  Freed & Gesmer
shall be Special  Counsel  for all  purposes  hereof  unless  and until  another
Special  Counsel shall have been  selected by a majority in aggregate  principal
amount of the Transfer  Restricted  Securities and notice hereof shall have been
given to the Company. 6. Indemnification.

(a) The Company agrees to indemnify and hold harmless (i) the Initial Purchaser,
(ii) each Holder of Transfer Restricted  Securities,  (iii) each person, if any,
who controls  (within the meaning of Section 15 of the Securities Act or Section
20 of the Exchange Act) any of the foregoing (any of the persons  referred to in
this clause (iii) being hereinafter referred to as a "controlling  person"), and
(iv) the respective officers, directors,  partners,  employees,  representatives
and  agents  of the  Initial  Purchaser,  each  Holder  of  Transfer  Restricted
Securities,  or any  controlling  person (any person  referred to in clause (i),
(ii), (iii) or (iv) may hereinafter be referred to as an "Indemnified  Person"),
from and against any and all losses, claims, damages, liabilities,  expenses and
judgments  caused by any untrue  statement  or  alleged  untrue  statement  of a
material fact  contained in any  Registration  Statement,  Prospectus or form of
Prospectus  or in any  amendment  or  supplement  thereto or in any  preliminary
Prospectus,  or caused by any  omission or alleged  omission to state  therein a
material fact required to be stated  therein or necessary to make the statements
therein  (in the case of any  Prospectus  or form of  Prospectus  or  supplement
thereto,  in  light  of the  circumstances  under  which  they  were  made)  not
misleading,  except  insofar  as  such  losses,  claims,  damages,  liabilities,
expenses or  judgments  are caused by any such untrue  statement  or omission or
alleged  untrue  statement or omission  based upon  information  relating to any
Indemnified  Person  furnished in writing to the Company by or on behalf of such
Indemnified  Person  expressly  for use  therein;  provided  that the  foregoing
indemnity  with  respect to any  preliminary  Prospectus  shall not inure to the
benefit of any  Indemnified  Person from whom the person  asserting such losses,
claims,  damages,  liabilities,  expenses and judgments purchased  securities if
such untrue  statement or omission or alleged untrue  statement or omission made
in such preliminary Prospectus is eliminated or remedied in the Prospectus and a
copy of the Prospectus  shall not have been furnished to such person in a timely
manner,  unless such Prospectus was not furnished  because the Company failed to
provide  the  Indemnified  Person  with  sufficient  copies  of  such  corrected
Prospectus within the time period required.

(b) In case any action shall be brought  against any Indemnified  Person,  based
upon any  Registration  Statement  or any such  Prospectus  or any  amendment or
supplement thereto and with respect to which indemnity may be sought against the
Company,  such  Indemnified  Person shall promptly notify the Company in writing
and the Company shall assume the defense  thereof,  including the  employment of
counsel  reasonably  satisfactory to such Indemnified  Person and payment of all
fees and  expenses.  Any  Indemnified  Person  shall  have the  right to  employ
separate counsel in any such action and participate in the defense thereof,  but
the  fees  and  expenses  of  such  counsel  shall  be at the  expense  of  such
Indemnified  Person,  unless (i) the  employment of such counsel shall have been
specifically  authorized in writing by the Company,  (ii) the Company shall have
failed to assume the defense and employ counsel or (iii) such Indemnified Person
or  Persons  shall have been  advised  by  counsel  that there may be a conflict
between  the  positions  of  the  indemnifying  party  or  parties  and  of  the
indemnified  party or  parties  in  conducting  the  defense  of such  action or
proceeding  or that there may be legal  defenses  available to such  Indemnified
Person or  Persons  different  from or in  addition  to those  available  to the
indemnifying  party or  parties  (in which case the  Company  shall not have the
right to assume the defense of such action on behalf of such Indemnified Person,
it being understood, however, that the Company shall not, in connection with any
one such action or separate but substantially  similar or related actions in the
same jurisdiction  arising out of the same general allegations or circumstances,
be liable for the fees and expenses of more than one separate  firm of attorneys
(in addition to any local counsel) for all such Indemnified Persons,  which firm
shall be designated in writing by such  Indemnified  Persons,  and that all such
fees and expenses shall be reimbursed as they are  incurred).  The Company shall
not be liable for any settlement of any such action effected without its written
consent,  but if settled with the written  consent of the  Company,  the Company
agrees to indemnify  and hold harmless any  Indemnified  Person from and against
any loss or liability by reason of such settlement. No indemnifying party shall,
without  the  prior  written  consent  of  the  indemnified  party,  effect  any
settlement  of any  pending  or  threatened  proceeding  in respect of which any
indemnified  party is or could have been a party and  indemnity  could have been
sought hereunder by such indemnified party,  unless such settlement  includes an
unconditional  release of such  indemnified  party from all  liability on claims
that are the subject matter of such proceeding.

<PAGE>


(c) In  connection  with  any  Registration  Statement  in  which  a  Holder  is
participating,  such Holder agrees, severally, and not jointly, to indemnify and
hold  harmless  the  Company,  its  directors,   its  officers  and  any  person
controlling  the Company  within the meaning of Section 15 of the Securities Act
or Section 20 of the Exchange Act, to the same extent as the foregoing indemnity
from the  Company  to each  Indemnified  Person,  but  only  with  reference  to
information  relating to such  Indemnified  Person furnished in writing by or on
behalf  of such  Indemnified  Person  expressly  for  use in  such  Registration
Statement.  In case any action shall be brought against the Company,  any of its
directors,  any such officer or any person controlling the Company based on such
Registration  Statement and in respect of which  indemnity may be sought against
any Indemnified  Person, the Indemnified Person shall have the rights and duties
given to the Company  (except that if the Company shall have assumed the defense
thereof,  such Indemnified Person shall not be required to do so, but may employ
separate  counsel  therein and  participate in defense  thereof but the fees and
expenses of such counsel  shall be at the expense of such  Indemnified  Person),
and the Company, its directors, any such officers and any person controlling the
Company  shall have the rights and  duties  given to the  Indemnified  Person by
Section 6(b) hereof. (d) If the  indemnification  provided for in this Section 6
is  unavailable  to an  indemnified  party in  respect  of any  losses,  claims,
damages,  liabilities,  expenses or  judgments  referred  to therein,  then each
indemnifying  party,  in lieu of  indemnifying  such  indemnified  party,  shall
contribute to the amount paid or payable by such  indemnified  party as a result
of such losses, claims, damages, liabilities, expenses and judgments (i) in such
proportion as is  appropriate  to reflect the relative  faults by the Company on
the one hand and each Indemnified  Person on the other hand from the offering of
the Transfer Restricted  Securities or (ii) if the allocation provided by clause
(i)  above  is not  permitted  by  applicable  law,  in  such  proportion  as is
appropriate  to reflect not only the relative  faults  referred to in clause (i)
above but also the  relative  benefits  received  by the  Company  and each such
Indemnified Person in connection with the statements or omissions which resulted
in such losses, claims, damages, liabilities,  expenses or judgments, as well as
any other relevant equitable  considerations.  The relative fault of the Company
and each such  Indemnified  Person shall be  determined  by reference  to, among
other things,  whether the untrue or alleged untrue statement of a material fact
or the omission to state a material fact relates to information  supplied by the
Company or such Indemnified Person and the parties' relative intent,  knowledge,
access to  information  and  opportunity to correct or prevent such statement or
omission.
                  The Company and the Initial  Purchaser agree that it would not
be just and  equitable  if  contribution  pursuant  to this  Section  6(d)  were
determined by pro rata allocation  (even if the Indemnified  Person were treated
as one entity for such purpose) or by any other method of allocation  which does
not take account of the equitable  considerations referred to in the immediately
preceding  paragraph.  The amount paid or payable by an  indemnified  party as a
result of the  losses,  claims,  damages,  liabilities,  expenses  or  judgments
referred to in the immediately  preceding  paragraph shall be deemed to include,
subject  to the  limitations  set  forth  above,  any  legal or  other  expenses
reasonably  incurred by such indemnified party in connection with  investigating
or defending any such action or claim.  Notwithstanding  the  provisions of this
Section 6, no  Indemnified  Person shall be required to contribute any amount in
excess  of the  amount  by  which  the  total  net  proceeds  received  by it in
connection with the sale of the Transfer Restricted  Securities pursuant to this
Agreement  exceeds the amount of any damages which such  Indemnified  Person has
otherwise  been  required  to pay by reason of such  untrue  or  alleged  untrue
statement  or  omission  or alleged  omission.  No person  guilty of  fraudulent
misrepresentation  (within the meaning of Section 11(f) of the  Securities  Act)
shall be  entitled  to  contribution  from any person who was not guilty of such
fraudulent misrepresentation. The Indemnified Persons' obligations to contribute
pursuant to this Section 6(d) are several,  and not joint,  in proportion to the
respective  amount  of  Transfer  Restricted  Securities  included  in and  sold
pursuant to any such Registration Statement by each Indemnified Person.

(e) The  agreements  contained in this  Section 6 shall  survive the sale of the
Transfer Restricted Securities pursuant to any Registration  Statement and shall
remain in full force and effect,  regardless of any investigation  made by or on
behalf of any Indemnified Person.

<PAGE>


7.                Rules 144 and 144A.

                  The  Company  shall  use all  reasonable  efforts  to file the
reports required to be filed by it under the Securities Act and the Exchange Act
in a timely  manner and, if at any time it is not  required to file such reports
but in the past had been required to or did file such reports, it will, upon the
request of any Holder,  make available other  information as required by, and so
long as  necessary  to  permit  sales of,  its  Transfer  Restricted  Securities
pursuant to Rule 144 and Rule 144A.  Notwithstanding  the foregoing,  nothing in
this  Section 7 shall be deemed to require the  Company to  register  any of its
securities pursuant to the Exchange Act.

8.                Underwritten Registrations.

                  If any of the Transfer  Restricted  Securities  covered by any
Shelf  Registration  Statement are to be sold in an underwritten  offering,  the
investment  banker or  investment  bankers  and  manager or  managers  that will
administer  the  offering  will be  investment  bankers of  recognized  national
standing selected by the Holders of a majority in aggregate  principal amount of
such Transfer Restricted  Securities  included in such offering,  subject to the
consent of the Company (which will not be unreasonably withheld or delayed).

                  No person may  participate  in any  underwritten  registration
hereunder  unless  such  person  (i)  agrees  to  sell  such  person's  Transfer
Restricted  Securities  on the basis  reasonably  provided  in any  underwriting
arrangements   approved  by  the  persons  enticed  hereunder  to  approve  such
arrangements  and (ii)  completes  and  executes all  questionnaires,  powers of
attorney,  indemnities,  underwriting  agreements and other documents reasonably
required under the terms of such underwriting arrangements.

9.                Miscellaneous.

(a) Remedies. In the event of a breach by the Company, or by a Holder, of any of
their   obligations   under  this   Agreement,   each  Holder  or  the  Company,
respectively,  in addition to being  entitled to exercise all rights  granted by
law, including recovery of damages,  will be entitled to specific performance of
its rights under this Agreement. The Company and each Holder agree that monetary
damages would not be adequate  compensation for any loss incurred by reason of a
breach by it of any of the provisions of this Agreement and hereby further agree
that,  in the event of any action for  specific  performance  in respect of such
breach, they shall waive the defense that a remedy at law would be adequate.

<PAGE>


(b) No Inconsistent Agreements. Following the date hereof, the Company shall not
enter into any agreement  with respect to its  securities  that is  inconsistent
with the rights granted to the Holders in this Agreement or otherwise  conflicts
with  the  provisions  hereof.  The  Company  is not  currently  a party  to any
agreement granting any registration rights with respect to any of its securities
to any person which conflicts with the Company's  obligations hereunder or gives
any  other  party  the  right to  include  any  securities  in any  Registration
Statement filed pursuant  hereto,  except for such rights and conflicts as shall
have  been  irrevocably  waived  at  the  Closing  Date.  Without  limiting  the
generality  of the  foregoing,  without the written  consent of the Holders of a
majority in aggregate  principal amount of the Transfer  Restricted  Securities,
following  the date hereof,  the Company shall not grant to any person the right
to request it to register any of its securities  under the Securities Act unless
the rights so granted  are subject in all  respects  to the prior  rights of the
Holders  of  Transfer  Restricted  Securities  set  forth  herein,  and  are not
otherwise in conflict or inconsistent with the provisions of this Agreement. (c)
No Adverse Action Affecting the Transfer Restricted Securities. The Company will
not take any action with respect to the  Transfer  Restricted  Securities  which
would  adversely  affect  the  ability of any of the  Holders  to  include  such
Transfer  Restricted  Securities in a registration  undertaken  pursuant to this
Agreement. (d) No Piggyback on Registrations. The Company shall not grant to any
of  its  security  holders  (other  than  the  Holders  of  Transfer  Restricted
Securities in such  capacity) the right to include any of its  securities in any
Shelf  Registration  Statement other than Transfer  Restricted  Securities.  (e)
Amendments  and  Waivers.  The  provisions  of  this  Agreement,  including  the
provisions of this sentence, may not be amended,  modified or supplemented,  and
waivers or consents to departures from the provisions  hereof, may not be given,
without the written consent of the Holders of a majority in aggregate  principal
amount of the Transfer Restricted  Securities.  Notwithstanding the foregoing, a
waiver or consent to depart from the provisions  hereof with respect to a matter
that  relates  exclusively  to the  rights of  Holders  of  Transfer  Restricted
Securities whose securities are being sold pursuant to a Registration  Statement
and that does not directly or  indirectly  affect the rights of other Holders of
Transfer  Restricted  Securities  may be  given  by  Holders  of a  majority  in
aggregate principal amount of the Transfer  Restricted  Securities being sold by
such Holders pursuant to such Registration  Statement;  provided,  however, that
the provisions of this sentence may not be amended,  modified,  or  supplemented
except in accordance with the provisions of the immediately  preceding sentence.
(f) Notices. All notices and other  communications  provided for herein shall be
made in writing by hand-delivery,  next-day air courier,  certified  first-class
mail, return receipt  requested or telecopy:  (i) if to a Holder, to the address
of such  Holder  as it  appears  in the Note or  Common  Stock  register  of the
Company, as applicable; and

(ii)     if to the Company, to:
                                    Waste Systems International, Inc.
                                    Lexington Office Park
                                    420 Bedford Street
                                    Lexington, MA  02173
                                    Tel:  (781) 862 3000
                                    Fax:  (781) 862 2929
                                    Attn:  Chief Financial Officer

                                    with a copy to:

                                    Goodwin, Procter & Hoar LLP
                                    Exchange Place
                                    Boston, MA  02109-2881
                                    (617) 570-1000
                                    Attn:  Thomas P. Storer, P.C.

(iii)                      if to the Special Counsel, to:

                                    Brown, Rudnick, Freed & Gesmer
                                    One Financial Center
                                    Boston, MA  02111
                                    (617) 856-8200
                                    Attn:  Lawrence M. Levy, Esquire

or such other  Special  Counsel at such other  address and telecopy  number as a
majority in aggregate principal amount of Transfer  Restricted  Securities shall
have given notice to the Company as contemplated by Section (b) hereof.

<PAGE>

                  Except  as  otherwise  provided  in this  Agreement,  all such
communications  shall be deemed to have been duly given, when delivered by hand,
if  personally  delivered;  one Business  Day after being timely  delivered to a
next-day  air courier,  five  Business  Days after being  deposited in the mail,
postage prepaid,  if mailed; and when receipt is acknowledged by the recipient's
telecopier machine, if telecopied.

(g) Successors and Assigns.  This Agreement shall inure to the benefit of and be
binding upon the  successors  and  permitted  assigns of each of the parties and
shall  inure to the  benefit  of each  existing  and future  Holder of  Transfer
Restricted  Securities.  The  Company  may not assign its rights or  obligations
hereunder without the prior written consent of each and every Holder, other than
by operation of law pursuant to a merger or  consolidation  to which the Company
is a party.  In the event the Notes  become  convertible  into  common  stock of
another person pursuant to the terms of the Notes,  the Company shall cause such
person to assume the Company's obligations hereunder.

(h)      Counterparts.  This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same Agreement.
(i)      Governing Law; Submission to Jurisdiction.

                  THIS   AGREEMENT   SHALL  BE  GOVERNED  BY  AND  CONSTRUED  IN
ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK, AS APPLIED TO CONTRACTS MADE
AND  PERFORMED  WITHIN THE STATE OF NEW YORK  WITHOUT  REGARD TO  PRINCIPLES  OF
CONFLICTS OF LAW. THE COMPANY HEREBY IRREVOCABLY  SUBMITS TO THE JURISDICTION OF
ANY NEW YORK STATE COURT  SITTING IN THE BOROUGH OF MANHATTAN IN THE CITY OF NEW
YORK OR ANY FEDERAL COURT SITTING IN THE BOROUGH OF MANHATTAN IN THE CITY OF NEW
YORK IN RESPECT OF ANY SUIT, ACTION OR PROCEEDING  ARISING OUT OF OR RELATING TO
THIS  AGREEMENT,  AND  IRREVOCABLY  ACCEPTS  FOR  ITSELF  AND IN  RESPECT OF ITS
PROPERTY,  GENERALLY AND UNCONDITIONALLY,  JURISDICTION OF THE AFORESAID COURTS.
THE COMPANY  IRREVOCABLY  WAIVES, TO THE FULLEST EXTENT IT MAY EFFECTIVELY DO SO
UNDER  APPLICABLE  LAW, ANY OBJECTION  THAT IT MAY NOW OR HEREAFTER  HAVE TO THE
LAYING OF THE VENUE OF ANY SUCH SUIT,  ACTION OR PROCEEDING  BROUGHT IN ANY SUCH
COURT AND ANY CLAIM THAT ANY SUCH SUIT, ACTION OR PROCEEDING BROUGHT IN ANY SUCH
COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM.

(j) Severability.  The remedies provided herein are cumulative and not exclusive
of any remedies provided by law. If any term, provision, covenant or restriction
of this  Agreement is held by a court of competent  jurisdiction  to be invalid,
illegal,  void  or  unenforceable,  the  remainder  of  the  terms,  provisions,
covenants  and  restrictions  set forth  herein  shall  remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their best efforts to find and employee an alternative means to
achieve the same or substantially  the same result as that  contemplated by such
term, provision,  covenant or restriction.  It is hereby stipulated and declared
to be the  intention of the parties that they would have  executed the remaining
terms, provisions, covenants and restrictions without including any of such that
may be hereafter declared invalid, illegal, void or unenforceable.

<PAGE>


(k) Headings.  The headings in this  Agreement are for  convenience of reference
only and shall not limit or otherwise affect the meaning hereof.  All references
made in this  Agreement to "Section"  and  "paragraph"  refer to such Section or
paragraph of this Agreement,  unless expressly stated otherwise.  (l) Attorneys'
Fees.  In any action or  proceeding  brought to enforce  any  provision  of this
Agreement,  or where any provision hereof is validly asserted as a defense,  the
prevailing  party, as determined by the court,  shall be entitled to recover its
reasonable attorneys' fees in addition to any other available remedy.
                  IN WITNESS WHEREOF,  the parties have caused this Registration
Rights Agreement to be duly executed as of the date first written above.

                        WASTE SYSTEMS INTERNATIONAL, INC.


                                                     By:
                                                     Name:
                                                     Title:


                                                     By:
                                                     Name:
                                                     Title:


                                                     FIRST ALBANY CORPORATION

                                                     By:
                               Authorized Signator


<PAGE>


Exhibit 5.1


                                                 September 28, 1998

Waste Systems International, Inc.
Lexington Office Park
420 Bedford Street, Suite 300
Lexington, MA 02173

        Re:    Registration Statement on Form S-3

Ladies and Gentlemen:

        This opinion is rendered to you in connection  with the  preparation  of
the   Registration   Statement  on  Form  S-3  (File  No.   333-________)   (the
"Registration  Statement")  under the  Securities  Act of 1933,  as amended (the
"Securities  Act"),  relating to the proposed  issuance  and sale,  from time to
time, by certain selling stockholders of Waste Systems International,  Inc. (the
"Company")  of up to 7,205,022  shares (the  "Shares") of the  Company's  common
stock, $.01 par value per share (the "Common Stock").

        We  have  acted  as  counsel  to the  Company  in  connection  with  the
preparation of the Registration Statement. For purposes of this opinion, we have
examined the Certificate of Incorporation  and Bylaws,  as amended and restated,
of the Company;  such records of the corporate  proceedings of the Company as we
have deemed material;  the Registration  Statement and all exhibits thereto; and
such other  documents  as we have deemed  necessary  to enable us to render this
opinion.

        In rendering  the opinions  expressed  herein,  we assume that all steps
necessary to comply with the registration requirements of the Securities Act and
with applicable requirements of state law regulating the sale of securities will
be duly taken.

        Based upon and  subject  to the  foregoing,  and having  regard for such
legal  considerations  as we have deemed  relevant,  it is our opinion  that the
Shares have been authorized for issuance and are validly issued,  fully paid and
nonassessable.

        We hereby  consent  to the  filing of this  opinion as an exhibit to the
Registration  Statement  and to the  reference  to our name in the  Registration
Statement and the Prospectuses contained therein.

                                           Very truly yours,

                                           /s/ Goodwin, Procter & Hoar LLP

                                           GOODWIN, PROCTER & HOAR LLP


<PAGE>



Exhibit 23.1

                       INDEPENDENT AUDITORS' CONSENT


To the Board of Directors
Waste Systems International, Inc.:

We consent to the use of our report  incorporated herein by reference and to the
reference to our firm under the heading "Experts" in the prospectus.  Our report
dated March 26,  1998  includes an  explanatory  paragraph  that states that the
Company must raise  substantial  additional  capital and must achieve a level of
revenues adequate to support its cost structure,  which raises substantial doubt
about its ability to continue as a going  concern.  The  consolidated  financial
statements  incorporated by reference herein do not include any adjustments that
might result from the outcome of that uncertainty.




                                                          KPMG Peat Marwick LLP

Boston, Massachusetts
September 28, 1998


<PAGE>



 Exhibit 23.3

                         Independent Auditors' Consent


Board of Directors
Eagle Recycling, Inc. and Subsidiary:

We consent to the inclusion of our report dated June 5, 1998 with respect to the
consolidated  balance  sheets of Eagle  Recycling,  Inc.  and  Subsidiary  as of
December 31, 1997 and 1996,  and the related  consolidated  statements of income
and  retained  earnings,  and cash flows for the years then ended,  which report
appears in the Form 8-K of Waste Systems International, Inc. dated May 22, 1998.


                                                         KPMG Peat Marwick LLP




Harrisburg, Pennsylvania
September 28, 1998




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