WASTE SYSTEMS INTERNATIONAL INC
S-3/A, 2000-02-16
REFUSE SYSTEMS
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    As filed with the Securities and Exchange Commission on February 16, 2000

                           Registration No. 333-92543
===============================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                             ----------------------

                        WASTE SYSTEMS INTERNATIONAL, INC.
             (Exact name of registrant as specified in its charter)


             DELAWARE                                          95-420366
  (State or other jurisdiction of                          (I.R.S. Employer
   incorporation or organization)                        Identification Number)


                          420 BEDFORD STREET, SUITE 300
                         LEXINGTON, MASSACHUSETTS 02420
                                 (781) 862-3000
               (Address, including zip code, and telephone number,
        including area code, of registrant's principal executive offices)
                                 ---------------

                                PHILIP W. STRAUSS
                        CHAIRMAN, CHIEF EXECUTIVE OFFICER
                                  AND PRESIDENT
                        WASTE SYSTEMS INTERNATIONAL, INC.
                          420 BEDFORD STREET, SUITE 300
                         LEXINGTON, MASSACHUSETTS 02420
                                 (781) 862-3000
                (Name, address, including zip code, and telephone
          number, including area code, of agent for service of process)
                                  -------------

                                   Copies to:
                                NANCY H. CORBETT
                           MORGAN, LEWIS & BOCKIUS LLP
                                 101 PARK AVENUE
                            NEW YORK, NEW YORK 10178
                               TEL: (212) 309-6000
                               FAX: (212) 309-6273
                                 --------------

         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. [ ]

     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, as amended (the "Securities  Act"),  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. [ ]

         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. [ ]

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]


===============================================================================

              CALCULATION OF REGISTRATION FEE

<TABLE>
<S>                    <C>                <C>                  <C>                 <C>

Title of each class                        Proposed maximum     Proposed maximum
  of securities        Amount to be       offering price per   aggregate offering      Amount of
to be registered        registered            security(1)           price(1)        Registration Fee
- ---------------------- ----------------   -------------------  ------------------   ----------------
Common Stock,
par value $.01
per share              6,681,365 shares            $4.00            $26,725,460             (2)
- --------------------- ----------------    -------------------   ------------------   ----------------

</TABLE>


(1)      Estimated  solely for the purpose of determining the  registration  fee
         pursuant to Rule 457(c) under the  Securities  Act of 1933, as amended,
         and  based  upon the  average  of the high and low sale  prices  of the
         Common  Stock  reported  on the Nasdaq  National  Market on February 4,
         2000.

(2)      Registration fee was previously paid.


         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.



                                        1


<PAGE>


                 SUBJECT TO COMPLETION, DATED FEBRUARY ___, 2000

                                6,681,365 SHARES

                        WASTE SYSTEMS INTERNATIONAL, INC.

                                  COMMON STOCK

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

     This prospectus relates to the offer and sale of 6,681,365 shares of common
stock of Waste Systems International, Inc. by the following stockholders:

o        Kevin Baldwin;
o        Kendall Baldwin;
o        Kelly Baldwin;
o        Kimberly Robb;
o        Baldwin, L.P.;
o        Chilton Investment Company Inc.;
o        John Hancock Advisers;
o        Evergreen Investment Management Company;
o        Penn Capital Management;
o        Tudor Investment Corporation;
o        Saugatuck Partners L.P.;
o        First Albany Corporation; and
o        B-III Capital Partners, L.P.

         We will not  receive  any of the  proceeds  from the sale of the shares
offered hereby.  All expenses of registration of the shares which may be offered
hereby  under the  Securities  Act will be paid by us (other  than  underwriting
discounts and selling  commissions,  and fees and expenses of advisors to any of
the Selling Stockholders).

         Our common  stock is traded on the  Nasdaq  National  Market  under the
symbol  "WSII." On February 7, 2000,  the closing  price of the common  stock as
reported on the Nasdaq Market was $4.375.

            THE SHARES OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK.
                SEE "RISK FACTORS" COMMENCING ON PAGE 2 HEREOF.

         Neither the Securities and Exchange Commission nor any state securities
commission has approved or  disapproved  of these  securities or passed upon the
accuracy or adequacy of this prospectus. Any representation to the contrary is a
criminal offense.

         The  information in this prospectus is not complete and may be changed.
The Selling  Stockholders  may not sell these  securities until the registration
statement filed with the Securities and Exchange  Commission is effective.  This
prospectus is not an offer to sell these  securities and it is not soliciting an
offer to buy  these  securities  in any  state  where  the  offer or sale is not
permitted.

                THE DATE OF THIS PROSPECTUS IS FEBRUARY ___, 2000


<PAGE>


                                  RISK FACTORS

An investment in Waste Systems involves a significant degree of risk. You should
consider  carefully  the  following  factors in  addition  to other  information
included in this prospectus before making an investment in our common stock.

Our history of losses makes the common stock a highly speculative investment.

         From Waste Systems'  inception  through September 30, 1999, we have had
aggregate  net losses of  approximately  $56  million on  aggregate  revenues of
approximately  $64 million and have had an accumulated  loss from  operations of
$30  million.  Continued  losses  and  negative  cash flow may  prevent  us from
achieving  our  strategic  objectives,  as well as limit our ability to meet our
financial obligations.

         Following Waste Systems'  restructuring  in 1996, we directed our focus
on becoming an  integrated  solid waste  management  company by  implementing  a
business strategy based on aggressive growth through  acquisitions.  Our ability
to become  profitable  and to maintain  profitability  as we pursue our business
strategy will depend upon several factors, including our ability to:

    o execute  our  acquisition  strategy  and  expand  our  revenue generating
      operations  while maintaining or reducing our proportionate administrative
      expenses;

    o locate sufficient financing to fund acquisitions; and

    o adapt to changing conditions in the competitive market in which we
      operate.

Risks of  substantial  voting  control by Waste  Systems'  management  and major
stockholders.

         As of November 12, 1999, Waste Systems'  directors,  executive officers
and their affiliates and other major stockholders -- those holding 5% or more of
the common stock -- beneficially owned  approximately  65.82% of the outstanding
shares of Common Stock. Accordingly, these stockholders are considered to have a
controlling  influence  over the election of directors  and other  corporate and
stockholder actions.

Issuance of additional equity may be dilutive to stockholders.

         Future  issuance of additional  equity by us may dilute the interest of
our existing stockholders. We currently have:

         o        up  to  4,955,143   shares  of  common  stock   issuable  upon
                  conversion   of  our   7%   Convertible   Subordinated   Notes
                  outstanding as of November 12, 1999,  which are convertible at
                  $10 per share at any time by the holders of the notes,  and by
                  us if the closing price of the common stock after May 13, 2000
                  remains  above $10 per share for  twenty  consecutive  trading
                  days;

         o        up to 1,500,000  shares of common stock issuable upon exercise
                  of outstanding  warrants,  which are  exercisable at $6.25 per
                  share of common stock from September 2, 1999 to March 2, 2004;

         o        up to 3,213,118  shares of common stock issuable upon exercise
                  of options outstanding as of November 12, 1999 under our stock
                  option  plans,  subject  to  vesting  requirements,  at prices
                  ranging from $1.41 to $9.25; and

         o        an  additional  786,882  shares of common stock  reserved for
                  issuance as of November 12, 1999 under our stock option plans.

         In  addition,  in August  1999,  we closed a private  placement  of our
common stock for aggregate  consideration of approximately $16 million at $7 per
share. The proceeds from the private placement will be used for potential future
acquisitions  and general  working  capital  purposes.  Finally,  our ability to
achieve our  business  objectives  depends on our use of a  combination  of debt
financing and equity financing  appropriate for executing our business strategy.
To the extent that  additional  equity  securities  are issued to finance future
acquisitions  instead of  issuing  additional  debt,  the  percentage  ownership
interests of our existing stockholders will be diluted.

Future  sales of common  stock may  adversely  affect  the market for our common
stock.

         Stockholders may be adversely  affected by future sales of common stock
by  other  stockholders.  If any of our  larger  stockholders  sell  substantial
amounts of our common stock  eligible for resale in the public market after this
offering,  the market price of our common stock could fall. These sales may also
make it more  difficult  for us in the future to sell  equity or  equity-related
securities in the public  market,  whether for the purpose of general  corporate
financing  or for use as  consideration  in an  acquisition,  at a time and at a
price that we deem appropriate.

         Upon completion of this offering, we will have 20,330,946 shares of our
common  stock  outstanding  (based on the  number of  shares  outstanding  as of
February 7, 2000 and assuming no exercise of  outstanding  stock  options  after
that date),  20,105,236 of which are freely tradable without  restriction  under
the Securities Act.

         In addition, we have already registered for resale:

    o  up to 4,955,143 shares of common stock issuable upon conversion of our 7%
       Convertible  Subordinated Notes at any time by the holders of the notes;
       and

    o  4,000,000 shares of common stock reserved for issuance under our stock
       option plans; and

    o  1,500,000 shares of common stock issuable upon the exercise of warrants
       to  purchase  shares of common  stock at an exercise price of $6.25 per
       share, for resale by the holders.

Market conditions may reduce the trading price of our common stock.

         The market price of our common stock has  historically  experienced and
may continue to experience high  volatility.  Our quarterly  operating  results,
changes in general  conditions in the economy or the financial markets and other
developments affecting us or our competitors could cause the market price of our
common stock to fluctuate substantially. In addition, in recent years, the stock
market  has  experienced   significant  price  and  volume  fluctuations.   This
volatility has affected the market prices of securities issued by many companies
for reasons  unrelated to their operating  performance and may adversely  affect
the price of our common stock.

It is unlikely that we will pay dividends to our stockholders in the future.

         We have never declared or paid a cash dividend on our common stock.  We
intend  to  retain  earnings  to  repay  debt  and to  finance  the  growth  and
development of our business and do not  anticipate  paying cash dividends on our
common stock in the  foreseeable  future.  Any  declaration  of dividends in the
future  will  depend,  among  other  things,  upon our  results  of  operations,
financial  condition  and  capital  requirements  as  well as  general  business
conditions.  Our  outstanding  debt securities  also contain  restrictions  that
prohibit us from making dividend payments to our stockholders.

Anti-takeover provisions applicable to Waste Systems may not be favorable to our
stockholders.

         Applicable  sections of the Delaware  General  Corporation  Law and our
charter and by-laws may have an  anti-takeover  effect and  discourage  takeover
attempts not first approved by our Board of Directors (including takeovers which
our stockholders  may consider to be in their best  interests).  Such provisions
include:

         o        Section 203 of the Delaware General  Corporation Law which, in
                  general,   imposes   restrictions   upon   certain   acquirers
                  (including  their affiliates and associates) of 15% or more of
                  our common stock;

         o        a charter  provision giving our Board of Directors the ability
                  to issue shares of preferred stock and to establish the voting
                  rights, preferences and other terms of preferred stock without
                  further action by stockholders;

         o        a charter provision limiting the removal of directors only for
                  cause and  requiring for such removal the approval of at least
                  two-thirds of the votes eligible to be cast by stockholders in
                  the election of the director to be removed;

         o        a by-law provision vesting exclusive authority in the Board of
                  Directors to determine the size of the Board of Directors and,
                  subject to limited exceptions, to fill any Board vacancies;

         o        a by-law provision  vesting  exclusive  authority in the Board
                  of Directors to call special meetings of stockholders; and

         o        a by-law  provision  requiring  advance notice for stockholder
                  proposals  and  nominations  for  election  to  the  Board  of
                  Directors.

These  statutory,  charter and by-law  provisions  could delay or frustrate  the
removal of incumbent  directors or the  assumption  of control by  stockholders,
even if these events would be beneficial to stockholders.  These provisions also
could discourage or make more difficult a merger, tender offer or proxy contest,
even if these events would be beneficial to the interest of stockholders.

Failure to achieve adjusted  stockholders'  equity of at least  $40,000,000 will
increase our interest expense.

         We must  increase the interest rate payable on the Senior Notes to 13%,
14% and 15% per year if we do not achieve an Adjusted  stockholders'  equity, as
defined below,  of at least  $40,000,000 on each of December 31, 1999,  June 30,
2000 and December 31, 2000, respectively.  "Adjusted stockholders' equity" means
our  stockholders'  equity as shown on our consolidated  balance sheets filed as
part of our regular  reports with the Securities and Exchange  Commission,  less
the amount of any increase resulting from the issuance of shares of common stock
in exchange for our outstanding 7% Convertible Subordinated Notes, to the extent
that the issuance exceeds 2,343,646 shares of common stock in the aggregate.

Incurring  more debt  could  further  exacerbate  the risks of our high level of
indebtedness.

         Despite our current high level of indebtedness, we may incur additional
indebtedness to fund  acquisitions,  for general working capital purposes or for
other reasons. On August 3, 1999, we entered into a $25 million revolving credit
facility with The BankNorth  Group,  N.A. to fund  acquisitions  and for general
working  capital,  $17.5  million  of  which  has been  drawn to date.  Any debt
incurred  under this credit  facility is secured debt that is  guaranteed by our
subsidiaries. With this new debt added to our current level of debt, the related
risks of indebtedness could intensify for us.

We may not  generate  enough  cash to  service  our  indebtedness  or our  other
liquidity needs.

         Our ability to make payments on and to refinance our  indebtedness  and
to fund planned capital expenditures will depend on our ability to generate cash
in the future. This ability depends in part on our operating performance and the
execution of our business  strategy.  It is also subject to influence by general
economic, financial, competitive, legislative, regulatory and other factors that
are beyond our control.

         We cannot assure you that our business will  generate  sufficient  cash
flow  from  operations,  that we will  realize  anticipated  cost  savings  from
operating  efficiency  improvements,  or that we will be able to  obtain  future
financing in amounts  sufficient to enable us to pay our indebtedness or to fund
our other liquidity needs.



<PAGE>


         The  following  table  outlines  the  schedule  of  our  required  debt
amortization payments:

                                               Principal Payments Due During
<TABLE>
<S>                        <C>       <C>     <C>     <C>    <C>     <C>    <C>    <C>     <C>      <C>        <C>

                            Balance
                               at
                           September
                              30,      1999   2000    2001   2002    2003   2004   2005    2006    Remainder  Total
- -------------------------- --------- ------- ------ ------- ------- ------ ------- ------  ------- ---------- -------
                                                                 (Dollars in thousands)

Long-Term Debt
Bank Credit Facility...     $17,500      --     --  $17,500     --     --      --     --      --         --  $17,500

Capital Leases, Equipment
and other Notes Payable       5,191     748    822     342     374    326     185    201     221      1,972   5,191

Senior Notes...........     100,000      --     --      --      --     --      --     --  100,000        --  100,000

10% Convertible
Subordinated Debentures...      400      --    400      --      --     --      --     --      --         --     400

7% Convertible
Subordinated Notes           49,551      --     --      --      --     --      --  49,551     --         --  49,551

     Total.............    $172,642     748  1,222  17,842     374    326     185  49,752 100,221     1,972  172,642

</TABLE>


         In  addition,  as  disclosed in the Risk Factor  subsection  above,  we
entered into a $25 million  revolving  credit facility on August 3, 1999. We may
need to refinance all or a portion of our indebtedness on or before maturity. We
cannot assure you that we will be able to refinance any of our  indebtedness  on
commercially reasonable terms or at all.

Our high level of indebtedness could adversely affect our financial health.

         We   currently   have  a  high  level  of   indebtedness   relative  to
stockholders'  equity. The following table illustrates our level of indebtedness
and ratio of earnings to fixed charges:


                                                            As of September 30,
                                                                   1999
                                                          (dollars in thousands)
                                                         -----------------------

         Long-term Indebtedness...............................    $171,958

         Stockholders' Equity.................................     $39,803

         Debt to Equity ratio.................................      4.32:1


Our high level of indebtedness could:

         o        limit our flexibility in planning for, or reacting to, changes
                  in business, industry and economic conditions;

         o        require us to dedicate a substantial  portion of our cash flow
                  from operations to repaying indebtedness, thereby reducing the
                  availability of our cash flow to fund working capital, capital
                  expenditures and other general corporate purposes;

         o        place us at a competitive disadvantage compared to our
                  competitors with lower levels of indebtedness; and

         o        limit our ability to borrow additional  funds,  either because
                  of restrictive covenants in our debt documents or because of a
                  potential lender's limits on borrower indebtedness.

         Our high level of indebtedness may have a direct negative impact on our
operations. It may also result in an event of default under our debt instruments
which,  if not cured or  waived,  could have a  material  adverse  effect on our
finances.

                                              For the nine
                                              months ended  For the Years Ended
                                              September 30,    December 31,
                                             -------------- -------------------

                                                1999         1998       1997
                                              --------     --------    --------

  Ratio of Earnings to Fixed Charges..........  N/A           N/A         N/A

         For the nine months ended  September  30, 1999,  we incurred net losses
that did not cover fixed charges by  approximately  $20.5 million;  for the year
ended December 31, 1998, we incurred net losses that did not cover fixed charges
by  approximately  $6.6  million;  and for the year ended  December 31, 1997, we
incurred  net losses  that did not cover  fixed  charges by  approximately  $5.5
million.  For purposes of computing this financial  relationship  of earnings to
fixed  charges,  earnings  consist  of  pretax  income  (loss)  from  continuing
operations  plus fixed charges.  Fixed charges  consist of interest  expense and
financing  costs,  including  capitalized  interest and amortization of deferred
financing  costs,  and an  estimated  portion of rentals  representing  interest
costs.

We have no control over many factors in our ability to finance planned growth.

         We  require  substantial  funds to  complete  and  bring to  commercial
viability all of our currently planned projects.  We also anticipate that future
business acquisitions will be financed not only through cash from operations and
the proceeds from previous debt offerings,  but also by future  borrowings under
bank credit  facilities,  offerings of Waste Systems stock as consideration  for
acquisitions,  or from the  proceeds of  additional  equity or debt  financings.
Therefore,  our ability to satisfy our future capital and operating requirements
for  planned  growth is  dependent  on a number of pending  or future  financing
activities, and we cannot assure you that any of these financing activities will
be successfully completed.

Our future success depends upon our ability to manage rapid growth in operations
and personnel.

         Our objective is continued growth by expanding our services in selected
markets where we can be one of the largest and most profitable  fully-integrated
solid waste  management  companies.  Accordingly,  we may experience  periods of
substantial  rapid growth.  This growth could place a significant  strain on our
operational,   financial  and  other  resources.   Any  failure  to  expand  our
operational and financial  systems and controls in an efficient manner at a pace
consistent with our growth could have a material adverse effect on our business,
financial condition and results of operations.

         Our future success is also highly dependent upon our continuing ability
to identify,  hire,  train and motivate a sufficient  number of highly qualified
personnel for our planned growth.  We face competition for recruiting  qualified
personnel  from our  competitors,  other  companies not in the waste  management
industry, government entities and other organizations. We cannot assure you that
we will be  successful  in  attracting  and  retaining  qualified  personnel  as
required for our present and future planned operations. Our inability to attract
and retain a  sufficient  number of  qualified  personnel  could have a material
negative impact on our business, financial condition and results of operations.

Our future success  depends upon our ability to identify,  acquire and integrate
acquisition targets.

         Our future success is highly  dependent  upon our continued  ability to
successfully identify,  acquire and integrate additional solid waste collection,
recycling,  transfer  and  disposal  businesses.  As the solid waste  management
industry continues to consolidate, competition for acquisition candidates within
the industry  increases  and the  availability  of suitable  candidates on terms
favorable to us may decrease. We compete for acquisition candidates with larger,
more established companies that may have significantly greater capital resources
than we do, which can further decrease the availability of suitable  acquisition
candidates at prices affordable to us. We cannot assure you that we will be able
to  identify  suitable  acquisition   candidates,   to  successfully   negotiate
acquisitions on terms reasonable to us given our resources,  to obtain financing
for those targets on favorable terms, or to successfully  integrate any acquired
targets with our current operations.

A  reduction  in the market  price of our common  stock may limit our ability to
consummate future acquisitions.

         We believe  that a  significant  factor in our  ability  to  consummate
acquisitions will be the attractiveness of our common stock as consideration for
potential  acquisition  targets.  This  attractiveness  may be,  in large  part,
dependent  upon the relative  market  price and capital  prospects of our equity
securities as compared to the equity securities of our competitors. In addition,
some of our competitors have a significantly  larger  capitalization than we do,
which  generally  results  in a more  liquid  market for their  publicly  traded
securities. If the market price of our common stock were to decline, we might be
unable to use our common stock as consideration for future acquisitions.



<PAGE>


Loss of key  executives  could  affect our  ability to  achieve  Waste  Systems'
business objectives.

         We depend to a high degree on the services of Philip Strauss, Chairman,
Chief  Executive  Officer  and  President,  and Robert  Rivkin,  Executive  Vice
President--Acquisitions,  Secretary,  Treasurer  and  Director,  in  planning to
achieve our  business  objectives.  We have  obtained  $1 million key  executive
insurance policies for each of Messrs.  Strauss and Rivkin.  However, if we lost
the services of either of these executives,  our business,  financial  condition
and results of operations could suffer material adverse effects.

Failed  acquisitions or projects may adversely  affect our results of operations
and financial condition.

         In accordance with generally accepted accounting principles,  we record
some  expenditures and advances relating to acquisitions,  pending  acquisitions
and  landfill  projects  as  assets  on our  balance  sheet,  then  amortize  or
depreciate  these  capitalized  expenditures  and  advances  over time,  usually
matching an asset's depreciation against the revenues it generates. We also have
an accounting  policy to record as an expense in the current  accounting  period
all unamortized capital expenditures and advances relating to any operation that
is permanently shut down, any acquisition that will not be consummated,  and any
landfill project that is terminated.  As a result of these accounting practices,
we may  have  to  record  the  entire  capitalized  expenditure  of  any  failed
acquisition or terminated project as a charge against earnings in the accounting
period in which the failure or termination  occurs. A large,  unexpected expense
against typical  earnings could have a material adverse effect on our results of
operations, financial condition and our business.

Our business may not succeed due to the highly  competitive  nature of the solid
waste management industry.

         The solid  waste  management  industry is highly  competitive  and very
fragmented,  and requires  substantial labor and capital resources.  Competition
exists for collection,  recycling,  transfer and disposal service customers,  as
well as for  acquisition  targets.  The  markets  we compete in or are likely to
compete in usually are served by one or more  national,  regional or local solid
waste  companies  who may have a  respected  market  presence,  and who may have
greater financial,  marketing or technical resources than those available to us.
Competition for waste  collection and disposal  business is based on price,  the
quality of service 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.

         We  also  compete  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
public sector competitors in solid waste management.  Additionally,  alternative
disposal facilities such as recycling and incineration may reduce the demand for
the  landfill-based  solid waste disposal  services that we provide and on which
our  strategy  is  based.  We cannot  assure  you that we will be able to remain
competitive  with  our  larger  and  better  capitalized   competitors  or  with
tax-advantaged public sector operators.

Seasonal  revenue  fluctuations may make it more difficult to manage and finance
our business successfully.

         Our revenues and results of operations tend to vary seasonally. We tend
to have lower  revenues in the winter months of the fourth and first quarters of
the calendar  year than in the warmer  months of the second and third  quarters.
The primary reasons for lower revenues in the winter months include:

         o        harsh winter weather conditions that interfere with collection
                  and transportation activities;

         o        the volume of winter month waste in our  operating  regions is
                  generally lower than that which occurs in warmer months; and

         o        the  construction  and  demolition  activities  which generate
                  landfill waste are primarily performed in the warmer seasons.

We believe that the  seasonality  of the revenue stream will not have a material
adverse effect on our business, financial condition and results of operations on
an annualized  basis.  Still,  higher warm weather revenues may not offset lower
cold  season  revenues,  and  seasonal  revenue  fluctuations  may  make it more
difficult to manage and finance our business successfully.



<PAGE>


Our  geographic  concentration  exposes  us to a higher  degree of risk than our
geographically more diverse competitors.

         Waste  Systems has  established  solid waste  management  operations in
Central  Pennsylvania,  Vermont,  Upstate New York, Eastern New England, and the
Baltimore, Maryland/Washington, D.C. region. Since our current primary source of
revenues  will be  concentrated  in these  geographic  locations,  our business,
financial  condition and results of operations  could be materially  affected by
downturns in these local economies,  severe weather conditions in these regions,
and each  region's  state and  local  regulations.  Factors  that have a greater
impact on our selected markets than on our other regions of the country are more
likely to have a negative effect on our business than on our larger regional and
national competitors in the waste management industry.

         Industry  consolidation in our operating regions has also increased the
competition  for  customers  who  generate  waste  streams.  This  may  make  it
increasingly  difficult to expand  operations  within our selected  markets.  We
cannot  assure you that we will be able to continue to increase  the local waste
streams to our operating  landfills or be able to expand our geographic  markets
to  mitigate  the  effects of adverse  economic  events  that may occur in these
regions.

Potential difficulties in acquiring landfill capacity could increase our costs.

         Our operations  depend on our ability to expand the landfills we own or
operate and to develop or acquire new landfill  sites. We cannot assure you that
we will be successful in obtaining new landfill sites or expanding the permitted
capacity of our existing  landfills.  The process of obtaining  required permits
and  approvals  to open  new  landfills,  and to  operate  and  expand  existing
landfills, has become increasingly difficult and expensive. The process can take
several years and involves  hearings and compliance  with zoning,  environmental
and other  requirements.  We cannot  assure  you that we will be  successful  in
obtaining and maintaining  required  permits to open new landfills or expand the
existing landfills we own.

         Even when  granted,  final  permits to expand  landfills  are often not
approved until the remaining capacity of a landfill is very low. In the event we
exhaust our permitted  capacity at one of our  landfills,  our ability to expand
internally  will be  limited  and we  will be  required  to cap and  close  that
landfill.  Furthermore,  as the solid waste  management  industry  continues  to
consolidate,   there  will  be  greater   competition  for  potential   landfill
acquisitions.  As a result of insufficient landfill capacity, we could be forced
to transport waste greater distances to our own landfills that have capacity, or
to dispose of waste locally at landfills operated by our competitors.  In either
case, the additional  costs we would incur could have a material  adverse effect
on our business.

Failure to obtain landfill closure  performance  bonds and letters of credit may
adversely affect our business.

         We 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
some of our landfills and transfer  stations.  Our 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 our business,  financial  condition
and results of operations.

Estimated  accruals for landfill closure and post-closure costs may not meet our
actual financial obligations.

         The closure and  post-closure  costs of our existing  landfills and any
landfill  we may own or  operate  in the  future  represent  material  financial
obligations.  To meet these future  obligations,  we estimate and accrue closure
and  post-closure  costs based on  engineering  estimates of landfill  usage and
remaining  landfill  capacity.  We cannot  assure  you that the  amount of funds
estimated and accrued for landfill closure and post-closure costs will be enough
to  meet  these  future  financial  obligations.   Any  failure  to  meet  these
obligations when they become due, or any use of significant funds to cover a gap
between  such  accruals  and actual  landfill  closure  and  post-closure  costs
incurred,  may  have  a  material  adverse  effect  on our  business,  financial
condition and results of operations.

Environmental and other government  regulations  impose costs and uncertainty on
our operations.

         We and our customers operate in a highly regulated environment, and our
landfill  projects in particular  usually will require federal,  state and local
government  permits and environmental  approvals.  Maintaining  awareness of and
attempting to comply with applicable  environmental  legislation and regulations
require substantial expenditures of our personnel and financial resources. These
efforts,  however,  do not  guarantee  that we will  meet all of the  applicable
regulatory criteria necessary to obtain required permits and approvals.

         Government  regulators generally have broad discretion to deny, revoke,
or modify regulatory permits or approvals under a wide variety of circumstances.
In addition,  government  regulators may adopt new environmental  legislation or
regulations or amend existing legislation, and may interpret or enforce existing
legislation  in new  ways.  All of these  circumstances  may  require  us or our
customers to obtain additional permits or approvals.

         Any delay in obtaining  required  regulatory  permits or approvals  may
delay our ability to obtain project  financing,  thereby  increasing our need to
invest working  capital in projects before  obtaining more permanent  financing.
These  delays may also reduce our project  returns by  deferring  the receipt of
project  revenues to a later  project  completion  date.  If we are  required to
cancel any planned project because we were unable to obtain required  permits or
as a result of any other regulatory  impediments,  we may lose any investment we
have made in the project up to that point. The cancellation,  or any substantial
delay in completion,  of any project may have a significant  negative  effect on
our financial condition and results of operations.

We are exposed to potential  liability for  environmental  damage and regulatory
noncompliance.

         We are  engaged  in the  collection,  transfer  and  disposal  of waste
described as  non-hazardous,  and we believe  that we are  currently in material
compliance with all applicable  environmental laws. Despite these circumstances,
if harmful  substances escape into the environment and cause damages or injuries
as a result of our operating activities, we are exposed to the risk that we will
be held liable for any damages and injuries,  as well as for  significant  fines
for regulatory noncompliance.

Our environmental liability insurance may not cover all risks of loss.

         We  maintain  environmental  impairment  liability  insurance  covering
particular claims for the sudden or gradual onset of environmental damage to the
extent  of  $5  million  per  landfill.  If  we  were  to  incur  liability  for
environmental  damage in excess of our insurance limits, our financial condition
could be adversely  affected.  We also carry a comprehensive  general  liability
insurance policy,  which management  considers  adequate at this time to protect
our assets and operations from other risks.

Addressing  local community  concerns about our operations may adversely  affect
our business.

         Members of the public in the  communities  where we do  business  could
raise concerns with government  regulators and others about the effects on their
communities  of our  existing or planned  operations  and,  in some  areas,  the
proposed development of solid waste facilities.  These concerns cannot always be
anticipated, and our attempts to address these concerns may result in unforeseen
delays,  costs and litigation that could adversely affect our ability to achieve
our business objectives.



<PAGE>


                       WHERE YOU CAN FIND MORE INFORMATION

         We file annual,  quarterly, and current reports, proxy statements,  and
other documents with the Securities and Exchange Commission.  Our file number is
0-25988.  You may  read  and  copy  any  document  we file at the  SEC's  public
reference room at Judiciary  Plaza  Building,  450 Fifth Street,  NW, Room 1024,
Washington,  D.C. 20549. You should call  1-800-SEC-0330 for more information on
the  public   reference   room.   The  SEC   maintains   an  Internet   site  at
http://www.sec.gov where certain information regarding issuers may be found.

         This prospectus is part of a registration  statement that we filed with
the  SEC.  The  registration  statement  contains  more  information  than  this
prospectus  regarding  Waste  Systems and its common  stock,  including  certain
exhibits and schedules.  You can get a copy of the  registration  statement from
the SEC at the address listed above or from its Internet site.

         Our  common  stock is  traded  on The  Nasdaq  National  Market.  Proxy
statements  and other  information  concerning  us can also be  inspected at the
offices of The Nasdaq Stock Market, 1735 K Street, N.W., Washington D.C. 20006.

                       DOCUMENTS INCORPORATED BY REFERENCE

         The SEC allows us to "incorporate" into this prospectus  information we
file with the SEC in other documents.  This means that we can disclose important
information   to  you  by  referring  to  other   documents  that  contain  that
information.  The information may include documents filed after the date of this
prospectus  which  update  and  supersede  the  information  you  read  in  this
prospectus.  The following  documents and other  materials,  which we have filed
with the Securities and Exchange  Commission,  are incorporated and specifically
made a part of this prospectus by reference:

         (1)      Annual Report on Form 10-K for the fiscal year ended  December
                  31,  1998,  as amended by the Report on Form  10-K/A  filed on
                  April 8, 1999, as further amended by the Report on Form 10-K/A
                  Amendment No. 2 filed on August 5, 1999;

         (2)      Quarterly  Report on Form 10-Q for the quarter ended March 31,
                  1999, as amended by the Report on Form 10-Q/A filed on
                  August 5, 1999;

         (3)      Quarterly Report on Form 10-Q for the quarter ended June 30,
                  1999 filed on August 14, 1999;

         (4)      Quarterly Report on Form 10-Q for the quarter ended September
                  30, 1999 filed on November 15, 1999; and

         (5)      Current  Report on Form 8-K filed on March 12,  1999,  Current
                  Report on Form 8-K  filed on March 25,  1999,  as  amended  by
                  Current Report on Form 8-K/A filed on May 24, 1999 and Current
                  Report on Form 8-K filed on December 29, 1999.

         In  addition,  all  documents  that we file  with  the  Securities  and
Exchange  Commission  pursuant  to  sections  13(a),  13(c),  14 or 15(d) of the
Securities Exchange Act of 1934 after the date of this prospectus will be deemed
to be  incorporated  by reference  into this  prospectus  and to be part of this
prospectus from the date of the filing of such documents with the Securities and
Exchange Commission. Any statement contained in this prospectus or in a document
incorporated  or deemed to be  incorporated by reference in this prospectus will
be deemed to be modified or  superseded  for  purposes of this  prospectus  if a
statement  contained  in this  prospectus  or in any  other  subsequently  filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies or supersedes that  statement.  Any statement so modified or superseded
will not be deemed, except as so modified or superseded, to constitute a part of
this prospectus.

         This  prospectus  incorporates  documents  by  reference  that  are not
presented in this prospectus or delivered  herewith.  Copies of these documents,
other than exhibits to these documents that are not specifically incorporated by
reference in this  prospectus,  are available  without  charge to each person to
whom a copy of this prospectus is delivered, upon the written or oral request of
that person.  Requests for any  information  should be directed to Waste Systems
International,  Inc., 420 Bedford Street,  Suite 300,  Lexington,  Massachusetts
02420 (telephone number (781) 862-3000), Attention: Chief Financial Officer.



<PAGE>


                           FORWARD-LOOKING STATEMENTS

         This   prospectus   contains  both   historical   and   forward-looking
statements.  These  forward-looking  statements are not facts;  rather, they are
intentions  and  expectations  relating to our plans,  strategies and prospects.
These  forward-looking  statements  are within the meaning of Section 27A of the
Securities  and  Exchange Act and are intended to be covered by the safe harbors
created thereby.  The forward-looking  statements can generally be identified by
our use of words such as "plan," "intend,"  believe,"  "expect," and other words
of  similar  import.   Although  we  believe  that  our  plans,  intentions  and
expectations  reflected in or suggested by these forward-looking  statements are
reasonable,  we cannot assure you that we will achieve our plans,  intentions or
expectations. We urge you to consider carefully the important factors that could
cause actual results to differ materially from the  forward-looking  statements.
These factors are described in the section entitled "Risk Factors" and elsewhere
in  this  prospectus.  We  make  all  the  forward-looking  statements  in  this
prospectus  only as of the date of this  prospectus,  and we do not undertake to
publicly update these forward-looking statements to reflect subsequent events.

                                   THE COMPANY

         We are an integrated  non-hazardous solid waste management company that
provides  waste  collection,   recycling,  transfer  and  disposal  services  to
commercial, industrial, residential and municipal customers within some regional
markets in the  Northeast  and  Mid-Atlantic  states  where we  operate.  We are
achieving significant growth by implementing an active acquisition strategy, and
plan to  contribute to our growth by  generating  increased  sales from existing
operations  and achieving  greater  operating  efficiencies.  Waste Systems is a
Delaware corporation. Our principal executive offices are located at 420 Bedford
Street,  Suite 300, Lexington,  Massachusetts 02420, and our telephone number is
(781) 862-3000.

Current Integrated Operations

         We  currently  operate,  and intend to  expand,  regional  networks  of
integrated waste collection and disposal  operations.  These integrated networks
consist of operating  landfills,  waste transfer stations,  and waste collection
operations.

         o        Waste Collection Operations

         We own multiple waste collection operating  subsidiaries which serve as
conduits of waste flow to our transfer stations and landfill  operations.  As of
November  12,  1999,  our  waste   collection   operations   serve  a  total  of
approximately 73,000 commercial, industrial, residential and municipal customers
in the Vermont, Central Pennsylvania,  Upstate New York, Eastern New England and
Baltimore, Maryland/Washington, D.C. markets.

         o        Landfill Operations

         We currently  own four  landfills,  one in Vermont and three in Central
Pennsylvania.  Two of these were operating in 1998, and generated  approximately
20% of our 1998  revenues.  Of the remaining  two, one began  operating in March
1999 with the acquisition of Community  Refuse  Service,  Inc., and we expect to
begin  operating the other in December 1999. The aggregate  remaining  estimated
permitted  capacity of these four owned  landfills is  approximately  24 million
cubic yards.  In  addition,  we have a 16-year  contract  with the Town of South
Hadley,  Massachusetts  to operate that town's  landfill,  subject to receipt of
required  permits,  which we expect to begin  operating in the first  quarter of
2000. The South Hadley  landfill has an estimated  capacity of 2.0 million cubic
yards available for future disposal.

         o        Transfer Station Operations

         We provide transfer  station  services  supporting one of our landfills
and have  acquired  another  transfer  station that is  permitted  and has begun
construction.  We recently completed the acquisition of two additional  transfer
stations.  The transfer stations serve as gateways of waste streams by receiving
and compacting  solid waste collected by us and by third parties,  which we then
transfer by long-haul trucks for disposal at landfills we operate.



<PAGE>


The Movement of the Solid Waste Management  Industry Towards  Consolidation  and
Integration

         The solid waste management industry is undergoing general trends toward
significant  consolidation  and  integration.  We believe  these  trends are due
primarily to the following factors:

         o  stringent environmental regulations which require increased capital
            to maintain regulatory compliance;

         o  the inability of many smaller operators to achieve the competitive
            economies of scale enjoyed by larger operators;

         o  the competitive and economic benefits of providing integrated
            collection,  recycling, transfer and disposal services; and

         o  the privatization of solid waste landfills,  transfer  stations, and
            collection services by municipalities.

         Although significant  consolidation has occurred within the solid waste
management industry,  we believe the industry remains highly fragmented and that
a substantial  number of potential  acquisition and privatization  opportunities
remain, including in the Northeast and Mid-Atlantic states where we operate.

Our Strategy to Capitalize on Industry Consolidation and Integration

         We  seek  to  acquire  independent  collection,  transfer  station  and
landfill  operations in appropriate locales to integrate those acquisitions into
our current  operations.  Our objective is to expand the geographic scope of our
operations and to become one of the leading non-hazardous solid waste management
companies  in each local  market  that we serve.  The  primary  elements  of our
strategy for achieving these objectives are:

         o        Executing our acquisition  program.  Our  acquisition  program
                  consists  of  identifying   regional   markets  and  acquiring
                  non-hazardous  solid waste  disposal  assets in those targeted
                  markets  that we can  operate  as  part of a fully  integrated
                  solid  waste  management  operation.  To  establish  ourselves
                  within  a  selected  market,  we seek  acquisitions  that  are
                  consistent  with  our  plan  to  acquire  long-term   disposal
                  capacity in targeted  regional markets,  collection  companies
                  and  transfer  stations  in the  targeted  regions to secure a
                  stable  long-term  waste  flow,  and small  but  complementary
                  "tuck-in"   collection   companies   to  increase  a  regional
                  operation's profitability.

         o        Generating  internal  growth.  We  plan to  generate  internal
                  growth  from   existing   operations   by   increasing   sales
                  penetration  in our current and adjacent  markets,  soliciting
                  new   commercial,   industrial  and   residential   customers,
                  marketing  upgraded services to existing  customers and, where
                  appropriate, raising prices.

         o        Increasing  operating  efficiency.  We expect to increase  our
                  operating    efficiency    through    implementation   of   an
                  organizational   system  that  sets  operating  standards  and
                  analyzes  operating  criteria  of  our  collection,  transfer,
                  disposal and other services.

         In connection with our growth strategy,  Waste Systems currently is and
at any given time will be involved in potential acquisitions that are in various
stages of exploration and negotiation,  ranging from initial  discussions to the
execution of letters of intent and the  preparation  of  definitive  agreements.
Some of these potential acquisitions may be material. No assurance can be given,
however,  that we will be  successful  in  completing  further  acquisitions  in
accordance with our growth strategy, or that acquisitions, if completed, will be
successful.  For a  description  of the risks  involved in our growth  strategy,
please refer to the subsections of the "Risk Factors" section of this prospectus
on page 6 beginning with "We have no control over many factors in our ability to
finance planned growth."



<PAGE>


Our Key Strengths

         Through  the  implementation  of our  growth  strategy,  we  believe we
demonstrate the following key strengths:

         o        Development of Fully Integrated Operations

         We continue to develop more fully integrated operations in our targeted
market  areas.  Throughout  1998 and during the nine months ended  September 30,
1999,  the Company  increased the amount of waste  collected by the Company that
was subsequently disposed at Company landfills,  and increased the amount of the
waste  delivered for disposal at the Company's  landfills  that was collected by
the Company. During the nine months ended September 30, 1999, nearly 100% of the
waste from the Company's  Vermont  operations  was delivered for disposal at the
Moretown  Landfill and  approximately 41% of the waste delivered for disposal at
the  Moretown  Landfill  during this period was  collected  by the  Company.  In
addition, approximately 65% of the waste from the Company's Central Pennsylvania
- - Altoona  division  operations  was  delivered  for  disposal  at the Sandy Run
Landfill and  approximately 70% of the waste delivered for disposal at the Sandy
Run  Landfill  during  this  period  was  collected  by the  Company.  Since the
acquisition of Community  Refuse,  Inc., on March 1, 1999,  approximately 93% of
the  waste  from  the  Company's  Central  Pennsylvania  -  Harrisburg  division
operations was delivered for disposal at the Community Refuse, Inc. landfill and
approximately  19% of the waste delivered for disposal at the Community  Refuse,
Inc. landfill during this period was collected by the Company.  During the third
quarter,  the Company  acquired  Eastern  Trans-Waste of Maryland,  Inc. and C&J
Trucking Company, Inc. and Affiliates. For the quarter ended September 30, 1999,
Eastern Trans-Wastes disposed of approximately 26% of its waste at the Community
Refuse, Inc. landfill.  C&J Trucking Company,  Inc. disposed of approximately 3%
of  its  waste  at the  Community  Refuse,  Inc.  landfill.  It is  management's
intentions to fully  internalize  these operations with WSI owned landfills over
the next several quarters, including the Mostoller landfill which is expected to
open up in December 1999.

         o        Operating Efficiencies

         We are achieving significant operating  efficiencies and reducing costs
through  consolidation  and  elimination  of  redundant  corporate  and  service
functions in acquired businesses.

         o        Significant Disposal Capacity

         We have  approximately 26.0 million cubic yards of landfill capacity in
landfills  we own or  operate,  of which  9.9  million  cubic  yards  are  fully
permitted and operating.  We recently began  construction  on an additional 14.2
million  cubic  yards of  landfill  capacity,  and 2.0  million  cubic yards are
engaged in the final  permitting  process.  This significant  disposal  capacity
gives us the opportunity to achieve a high degree of internalization by allowing
room for disposal of the waste streams  generated by our growing  collection and
transfer operations.

         o        Successful Acquirer and Consolidator

         We believe that we have  demonstrated  our ability to realize  value in
the fragmented  solid waste  management  industry by completing  acquisitions of
three  landfills,   five  transfer  stations,  and  41  solid  waste  collection
operations in the Northeast and Mid-Atlantic  regions since January 1998. Please
see the section of this prospectus entitled "Recent  Developments"  beginning on
page 15 for a more complete description of our current activities.  We have been
effective in executing our acquisition  program to expand our solid waste assets
in our targeted regional markets at prices we believe will provide opportunities
for increased  profits and  flexibility in operations.  As a result of executing
our  acquisition  program,  we have realized  significant  growth in revenue and
earnings before interest,  taxes, depreciation and amortization or EBITDA, which
we believe is a measure  commonly used by lenders and some investors to evaluate
a company's performance in our industry.

         o        Strong Management Team

         Our  management  team has a demonstrated  track record of  identifying,
acquiring,  integrating and operating non-hazardous solid waste disposal assets.
Our  executives and operation  managers  average 13.2 years of experience in the
solid waste disposal industry. In addition, senior management owns a significant
equity stake in Waste Systems, which motivates them to achieve our objectives to
maximize the value of their Waste Systems stock.

                               RECENT DEVELOPMENTS

ACQUISITIONS.

         During the year ended  December 31, 1999,  Waste Systems  acquired five
collection  companies  and a landfill in Central  Pennsylvania,  one  collection
company in Vermont, two collection companies,  two transfer stations and a paper
recycling plant in Eastern New England,  two collection companies and a transfer
station in Upstate New York and a collection  company and a transfer  station in
the  Baltimore,  Maryland/Washington  D.C.  region.  The aggregate cost of these
acquisitions was approximately  $113.0 million consisting of approximately $72.7
million  in cash,  $19.3  million  in common  stock,  $11.6  million in Series C
Preferred Stock and $9.4 million in assumed  liabilities.  The acquisitions have
combined annual revenues of approximately  $42.0 million.  The acquisitions have
all been recorded using the purchase  method of accounting.  In accordance  with
the terms of the issuance,  on October 21, 1999, a special  shareholders meeting
was held and the Series C Preferred Stock was converted into 1,763,000 shares of
common stock.

NEW REVOLVING CREDIT FACILITY

         On August 3,  1999,  we entered  into a $25  million  revolving  credit
facility with The BankNorth  Group,  N.A. to fund  acquisitions  and for general
working  capital  purposes,  $17.5 million of which has been drawn to date.  Any
debt incurred  under this credit  facility is secured debt that is guaranteed by
our  subsidiaries.  The  revolving  credit  agreement has a term of three years,
provides  for an  interest  rate based on LIBOR,  and  includes  other terms and
conditions customary for secured revolving credit facilities.

PRIVATE PLACEMENT OF 2,239,745 SHARES OF COMMON STOCK

         In August 1999,  we closed a private  placement of our common stock for
aggregate  consideration  of  approximately  $16  million at $7 per  share.  The
proceeds  from  the  private   placement  will  be  used  for  potential  future
acquisitions and general working capital purposes.

                                 USE OF PROCEEDS

         We will not  receive  any  proceeds  from the sale of the common  stock
offered hereby.


<PAGE>


                              SELLING STOCKHOLDERS

         The following table sets forth  information with respect to the Selling
Stockholders, including:

o     the number and approximate percentage of shares beneficially owned by each
      of them as of November 12, 1999;

o     the number of shares registered for sale; and

o the number and  approximate  percentage  of shares to be owned by each of them
after the completion of this offering.

         Except as otherwise  disclosed below, none of the Selling  Stockholders
has,  or within  the past three  years has had,  any  position,  office or other
material  relationship with Waste Systems.  Because the Selling Stockholders may
sell all or some portion of the shares of our common stock beneficially owned by
them,  only an estimate  (assuming  each  Selling  Stockholder  sells all of its
shares  offered  hereby)  can be given as to the  number of shares of our common
stock that will be  beneficially  owned by the Selling  Shareholders  after this
offering.  The  address  of  each  person  listed  below  is c/o  Waste  Systems
International,  Inc., 420 Bedford Street,  Suite 300,  Lexington,  Massachusetts
02420.  All persons listed have sole voting and investment power with respect to
their shares unless otherwise indicated.
<TABLE>
<CAPTION>

                                                COMMON STOCK                                COMMON STOCK
                                              BENEFICIALLY OWNED                           BENEFICIALLY OWNED
                                              PRIOR TO OFFERING1/                          AFTER OFFERING
<S>                                       <C>           <C>            <C>             <C>           <C>
                                                                           NUMBER
                                                                          OF SHARES
                 NAME                        NUMBER        PERCENT         OFFERED       NUMBER        PERCENT
- ---------------------------------------- ------------- --------------- -------------- ------------- -------------
Kevin Baldwin                              700,781         3.44%         700,781 6/           0             0%

Kendall Baldwin2/                          700,781         3.44%         700,781 6/           0             0%

Kelly Baldwin3/                            743,776         3.66%         743,776 6/           0             0%

Kimberly Robb4/                            743,776         3.66%         743,776 6/           0             0%

Baldwin, L.P.5/                           1,552,506        7.64%       1,552,506 6/           0             0%

Chilton Investment Company Inc.          1,759,700 7/      8.55%       1,000,000        759,700          3.69%

John Hancock Advisers                    1,845,397 8/      8.67%         307,603      1,537,794          7.23%

Evergreen Investment Management Company     82,678         0.41%          71,428         11,250          0.06%

Penn Capital Management                    159,875         0.79%         150,000          9,875          0.05%

Tudor Investment Corporation                71,428         0.35%          71,428              0             0%

Saugatuck Partners L.P.                     50,000         0.25%          50,000              0             0%

First Albany Corporation                    17,857         0.09%          17,857              0             0%

B-III Capital Partners, L.P.             8,019,955 9/     35.02%         571,429      7,448,526         32.53%
- -------

</TABLE>

1/   Based on a total of 20,330,946 shares of common stock outstanding as of
     February 7, 2000].

2/   Kendall  Baldwin is an employee of Waste Systems and served as a Director
     and as Vice-President of Eastern Trans-Waste of Maryland.

3/   Kelly Baldwin  served as a Director and as Secretary and Treasurer of
     Eastern Trans-Waste of Maryland.

4/   Kimberly Robb served as a Director and as President of Eastern Trans-Waste
     of Maryland.

5/   After the closing of the  acquisition  of Eastern  Trans-Waste of Maryland,
     Kevin   Baldwin,   Kendall   Baldwin,   Kelly  Baldwin  and  Kimberly  Robb
     collectively  transferred  by gift 142,106  shares of common stock of Waste
     Systems and 800 shares of Series C preferred  stock of Waste Systems (which
     were converted  into  1,410,400  shares of common stock of Waste Systems on
     October 21, 1999) to Baldwin, L.P. Horace G. Baldwin is the general partner
     of Baldwin, L.P.

6/   The  former   stockholders   of  Eastern   Trans-Waste   of  Maryland  were
     contractually  restricted  from  selling  any  shares of our  Common  Stock
     pursuant to this  Registration  Statement  until  December 31,  1999.  From
     January 1, 2000 through June 30, 2000, the former  stockholders  of Eastern
     Trans-Waste  of  Maryland  may,  subject  to  the   effectiveness  of  this
     Registration  Statement,  collectively  sell up to 20% of their  shares  of
     Common  Stock  (less  any  shares  of  Common  Stock  sold  by  the  former
     stockholders  of  Eastern   Trans-Waste  of  Maryland   pursuant  to  their
     "piggyback"   registration  rights).   After  June  30,  2000,  the  former
     stockholders  of Eastern  Trans-Waste  of Maryland  may sell their share of
     Common Stock without any contractual restrictions.

7/   Includes  1,504,700  shares of Common  Stock  currently  owned and  255,000
     shares of Common Stock  issuable  upon the exercise of warrants to purchase
     shares of Common Stock at an exercise price of $6.25 per share.

8/   Includes 898,715 shares of Common Stock currently owned,  916,682 shares of
     Common Stock  issuable upon  conversion  of Notes at a conversion  price of
     $10.00 as set forth in the Notes and 30,000 shares of Common Stock issuable
     upon the  exercise of warrants  to  purchase  shares of Common  Stock at an
     exercise price of $6.25 per share.

9/   Includes 5,450,533 shares of Common Stock currently owned, 2,231,922 shares
     of Common Stock issuable upon conversion of Notes at a conversion  price of
     $10.00  as set  forth in the Notes  and  337,500  shares  of  Common  Stock
     issuable  upon the exercise of warrants to purchase  shares of Common Stock
     at an  exercise  price of $6.25 per  share.  DDJ  Capital  Management,  LLC
     ("DDJ") serves as the investment manager to B-III; an affiliate of DDJ acts
     as the general partner of B-III.


         We have  agreed  to use our  best  efforts  to keep  this  Registration
Statement effective generally for a period of three years.


<PAGE>


                              PLAN OF DISTRIBUTION

         The  shares  of  common  stock  registered  hereunder  and owned by the
Selling  Stockholders  may be offered and sold by means of this  prospectus from
time to time as market  conditions  permit in the  over-the-counter  market,  or
otherwise  at prices  and terms  then  prevailing  or at prices  related  to the
then-current  market price, or in negotiated  transactions.  These shares may be
sold by one or more of the following methods, without limitation:

o  a block trade in which a broker or dealer so engaged will attempt to sell the
   shares as agent but may  position and resell a portion of the block as
   principal to facilitate the transaction;

o  a purchase by a broker or dealer as principal and resale by such broker or
   dealer for its account pursuant to this prospectus;

o  ordinary brokerage transactions and transactions in which the broker solicits
   a purchase; and

o  face-to-face transactions between sellers and purchasers without a broker or
   dealer.

         In  effecting  sales,   brokers  or  dealers  engaged  by  the  Selling
Stockholders  may  arrange  for other  brokers or dealers to  participate.  Such
brokers  or  dealers  may  receive   commissions   or  discounts   from  Selling
Stockholders in amounts to be negotiated.

         The  Selling  Stockholders  and  any  brokers  or  dealers  who  act in
connection  with  the  sale  of  the  shares  hereunder  may  be  deemed  to  be
"underwriters"  within  the  meaning  of 2(11) of the  Securities  Act,  and any
commissions  received  by them or any  profit  on any  resale  of the  shares as
principal might be deemed to be underwriting discounts and commissions under the
Securities Act. We have agreed to indemnify the Selling  Stockholders and we may
agree  to  indemnify  any such  broker  or  dealer  who may be  deemed  to be an
underwriter  against  certain  liabilities,   including  liabilities  under  the
Securities Act as an underwriter or otherwise.

         We have advised the Selling Stockholders that, during such time as they
may be engaged in a distribution of the shares of common stock included  herein,
they must  comply  with the  applicable  provisions  of  Regulation  M under the
Exchange  Act, as amended  ("Regulation  M") and, in connection  therewith,  the
Selling Stockholders may not engage in any stabilization  activity in connection
with any of our securities,  that they must furnish copies of this prospectus to
each broker-dealer  through which the shares of our common stock included herein
may be offered,  and that they may not bid for or purchase any of our securities
or  attempt to induce any person to  purchase  any of our  securities  except as
permitted  under  Regulation  M. The  Selling  Stockholders  have also agreed to
inform us and  broker-dealers  through whom sales may be made hereunder when the
distribution of the shares is completed.

                                  LEGAL MATTERS

         The validity of the  issuance of the shares of common stock  offered by
this  prospectus  has been  passed  upon for Waste  Systems by  Morgan,  Lewis &
Bockius LLP, New York, New York.

                                     EXPERTS

         The  consolidated  financial  statements  for each of the  years in the
three-year  period  ended  December 31, 1998  incorporated  by reference in this
prospectus  and elsewhere in this  Registration  Statement  have been audited by
KPMG LLP,  independent  certified public  accountants,  and in reliance upon the
authority of said firm as experts in accounting and auditing.


<PAGE>
No dealer,  representative  or any other person has been  authorized to give any
information or to make any  representations  other than those  contained in this
prospectus,  and if given or made, such information or representations  must not
be relied upon as having been authorized by Waste Systems.  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.  This prospectus does not constitute an
offer to sell or a solicitation of an offer to buy any securities offered hereby
by  anyone  in any  jurisdiction  in which  such  offer or  solicitation  is not
authorized  or in which the  person  making  such offer or  solicitation  is not
qualified  to do so or to anyone to whom it is  unlawful  to make such  offer or
solicitation.

                                TABLE OF CONTENTS

- ----------------------------------------------------------------          ----
RISK FACTORS                                                                2

Our history of losses makes the common stock a highly                       2
   speculative investment.
Risks of substantial voting control by Waste Systems'                       2
   management and major stockholders.
Issuance of additional equity may be dilutive to stockholders.              2

Future sales of common stock may adversely affect the market                3
   for our common stock.
Market conditions may reduce the trading price of our common                3
   stock.
It is unlikely that we will pay dividends to our stockholders               3
   in the future.
Anti-takeover provisions applicable to Waste Systems may not                3
   be favorable to our stockholders.
Failure to achieve adjusted stockholders' equity of at least                4
   $40,000,000 will increase our interest expense.
Incurring more debt could further exacerbate the risks of our               4
   high level of indebtedness.
We may not generate enough cash to service our indebtedness or              4
   our other liquidity needs.
Our high level of indebtedness could adversely affect our                   5
   financial health.
We have no control over many factors in our ability to finance              6
   planned growth.
Our future success depends upon our ability to manage rapid                 6
   growth in operations and personnel.
Our future success depends upon our ability to identify,                    6
   acquire and integrate acquisition costs.
A reduction in the market price of our common stock may limit               6
   our ability to consummate future acquisitions.
Loss of key executives could affect our ability to achieve                  7
   Waste Systems' business objectives.
Failed acquisitions or projects may adversely affect our                    7
   results of operations and financial condition.
Our business may not succeed due to the highly competitive                  7
   nature of the solid waste management industry.
Seasonal revenue fluctuations may make it more difficult to                 7
   manage and finance our business successfully.
Our geographic concentration exposes us to a higher degree of               8
   risk than our geographically more diverse competitors.
Potential difficulties in acquiring landfill capacity could                 8
   increase our costs.
Failure to obtain landfill closure performance bonds and                    8
   letters of credit may adversely affect our business.
Estimated accruals for landfill closure and post-closure                    8
   costs may not meet our actual financial obligations.
Environmental and other government regulations impose                       8
   costs and uncertainty on our operations.
We are exposed to potential liability for environmental                     9
   damage and regulatory noncompliance.
Our environmental liability insurance may not cover all                     9
   risks of loss.
Addressing local community concerns about our operations                    9
   may adversely affect our business.
WHERE YOU CAN FIND MORE INFORMATION                                        10

DOCUMENTS INCORPORATED BY REFERENCE                                        10

FORWARD LOOKING STATEMENTS                                                 11

THE COMPANY                                                                11

Current Integrated Operations.                                             11

The Movement of the Solid Waste Management Industry                        12
   Towards Consolidation and Integration.
Our Strategy to Capitalize on Industry Consolidation and                   12
   Integration.
Our Key Strengths.                                                         13

RECENT DEVELOPMENTS                                                        14

Acquisitions.                                                              14

New Revolving Credit Facility.                                             14

Private Placement of 2,239,745 Shares of Common Stock.                     14

USE OF PROCEEDS                                                            14

SELLING STOCKHOLDERS                                                       15

PLAN OF DISTRIBUTION                                                       17

LEGAL MATTERS                                                              17

EXPERTS                                                                    17

<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

         The  estimated   expenses  to  be  incurred  in  connection   with  the
distribution of the common stock covered by this Registration Statement,  all of
which will be paid by Waste Systems, are as follows:

    SEC Registration Fee                          $  7,830.00
    Nasdaq Listing Fee                                      *
    Printing and Engraving Costs                     5,000.00
    Legal Fees and Expenses                         10,000.00
    Accounting Fees and Expenses                     5,000.00
    Miscellaneous                                    5,000.00
                                                  ------------
    Total                                           32,830.00*

- -----------------------------
* To be filed by amendment.


ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Section  145 of the  Delaware  General  Corporation  Law  (the  "DGCL")
provides that a corporation may indemnify a director, officer, employee or agent
against expenses (including attorneys' fees), judgments,  fines and amounts paid
in  settlement  in respect of or in  successful  defense of any action,  suit or
proceeding if he acted in good faith and in a manner he  reasonably  believed to
be in or not opposed to the best interests of the corporation, and, with respect
to any criminal  action or  proceeding,  had no reasonable  cause to believe his
conduct was unlawful.

         We have obtained  directors' and officers' insurance providing benefits
aggregating  $5  million.  In  addition,  Article X of our  Second  Amended  and
Restated  Certificate of Incorporation  (the "Charter")  provides that directors
and  officers of Waste  Systems,  or others  serving as a director or officer of
another  corporation at our request,  shall be indemnified to the fullest extent
permitted  by the  DGCL.  Article X further  provides  that the  indemnification
rights  provided by such  Article X shall not be deemed  exclusive  of any other
rights to which those  indemnified  may be entitled under any law,  agreement or
vote of stockholders or disinterested directors or otherwise. Article VII of the
Charter  further  provides that no director shall be personally  liable to us or
our  stockholders  for monetary damages for any breach of fiduciary duty by such
person as a director, 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.  Any  amendment or repeal of Article VII by the  stockholders  or an
amendment to the DGCL shall not adversely  affect any right or protection  under
such  Article  existing at the time of such  amendment or repeal with respect to
any act or  omission  occurring  prior to such  amendment  or repeal of a person
serving as a director at the time of such amendment or repeal.

         Article V of our By-laws provides that present and former directors and
officers of Waste  Systems  shall be  indemnified  by us to the  fullest  extent
authorized  by the DGCL,  as the same  exists or may in the future be amended to
provide  for broader  indemnification  rights,  against  any and all  reasonable
expenses or liability  incurred in connection  with any  threatened,  pending or
completed  legal  proceeding in which any such person is involved as a result of
serving  or having  served as a  director  or  officer  of Waste  Systems,  as a
director  or officer of any  subsidiary  of Waste  Systems,  or acting or having
acted in any capacity with any other entity at our written request or direction,
in each  case if such  person  acted in good  faith  and in a  manner  he or she
reasonably  believed to be in, or not opposed  to, the best  interests  of Waste
Systems,  and with respect to criminal actions or proceedings,  that such person
had no reasonable cause to believe his or her conduct was unlawful.  The By-laws
provide that any  indemnification  extended to an officer  pursuant to Article V
shall include the reimbursement of expenses by us prior to the final disposition
of the proceeding upon the receipt of an undertaking by such indemnified  person
to repay such payment if it is determined  that such  indemnified  person is not
entitled to such reimbursement.  The By-laws further provide that the previously
described  provisions  of Article V are deemed to be a  contract  between  Waste
Systems and each director and officer. In addition, the By-laws provide that the
provisions with respect to  indemnification  and payment of expenses incurred in
defending a covered  proceeding  shall not be  exclusive  of any right which any
person may have or hereafter acquire under any statute, provision of the Charter
or the By-laws,  agreement,  vote of the stockholders or disinterested directors
or otherwise.

ITEM 16.  EXHIBITS

   EXHIBIT
    NUMBER                         DESCRIPTION

     4.1  --  Amended and Restated Certificate of Incorporation of Waste Systems
              (incorporated by reference to Exhibit 4.3 to the Registration
              Statement of Waste Systems on Form S-3, No. 333-37217).

     4.2  --  By-laws of Waste Systems (incorporated by reference to Exhibit 4.5
              to the Registration Statement of Waste Systems on Form S-3,
              No. 333-37217).

     4.3  --  Registration  Rights  Agreement  dated as of July 2, 1999 by and
              between Waste Systems and each of Kevin Baldwin, Kendall Baldwin,
              Kelly Baldwin and Kimberly Robb.

     4.4  --  Consent of Baldwin, L.P. dated July 2, 1999.

     5.1  --  Opinion of Morgan, Lewis & Bockius LLP.

    23.1  --  Consent of KPMG LLP.

    23.2  --  Consent of Morgan, Lewis & Bockius LLP (filed as part of
              Exhibit 5).

    24.1  --  Power of Attorney (included with the signature page hereof).



<PAGE>


ITEM 17. UNDERTAKINGS

         The undersigned Registrant hereby undertakes:

         (1) To file,  during  any period in which any 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 of 1933;

                  (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 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
changes 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 other material change to such information in the registration statement.

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

         (2) That  for the  purpose  of  determining  any  liability  under  the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new  registration  statement  relating to the securities being offered therein
and the offering of such  securities at the time may be deemed to be the initial
bona fide offering thereof.

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

         (4) That for purposes of determining any liability under the Securities
Act of 1933, each filing of the  registrant's  annual report pursuant to Section
13(a)  or  Section  15(d)  of the  Securities  Exchange  Act  of  1934  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.

         (5) To deliver or cause to be delivered  with the  prospectus,  to each
person to whom the  prospectus  is sent or given,  the latest  annual  report to
security  holders  that is  incorporated  by  reference  in the  prospectus  and
furnished  pursuant to and meeting the  requirements of Rule 14a-3 or Rule 14c-3
under  the  Securities  Exchange  Act  of  1934;  and  where  interim  financial
information  required to be presented by Article 3 of Regulation  S-X is not set
forth in the prospectus, to deliver, or caused to be delivered to each person to
whom the  prospectus  is sent or given,  the  latest  quarterly  report  that is
specifically incorporated by reference in the prospectus to provide such interim
financial information.

         (6)  Insofar  as  indemnification  for  liabilities  arising  under the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the Company pursuant to the foregoing provisions,  or otherwise,  the
Company  has  been  advised  that  in  the  opinion  of  the   Commission   such
indemnification  is against  public policy as expressed by the Securities Act of
1933  and  is,  therefore,   unenforceable.  In  the  event  that  a  claim  for
indemnification  against such liabilities (other than the payment by the Company
of expenses incurred or paid by a director, officer or controlling person of the
Company 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 Company  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 of whether such  indemnification by it
is against  public policy as expressed in the Securities Act of 1933 and will be
governed by the final adjudication of such issue.


<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 Lexington,  State of  Massachusetts on February ___,
2000.

Date: February ___, 2000            WASTE SYSTEMS INTERNATIONAL, INC.

                                    By:  /s/  James Elitzak
                                    James Elitzak
                                    Vice President and Chief Financial Officer
                                    (Principal Financial and Accounting Officer)


                                POWER OF ATTORNEY

         Each person whose signature appears below hereby appoints James Elitzak
as  his  true  and  lawful  attorney-in-fact  and  agent,  with  full  power  of
substitution  and  resubstitution,  for him and in his name, place and stead, in
any and all capacities, to sign any and all amendments (including post-effective
amendments) to this Registration  Statement and any other registration statement
for the same offering  filed  pursuant to Rule 462 under the  Securities  Act of
1933, and to file the same, with all exhibits thereto and all other documents in
connection therewith,  with the Commission,  granting unto said attorney-in-fact
and agent  full power and  authority  to do and  perform  each and every act and
thing  appropriate  or  necessary  to be done,  as fully and for all intents and
purposes as he might or could do in person,  hereby ratifying and confirming all
that  said  attorney-in-fact  and agent or his  substitute  or  substitutes  may
lawfully do or cause to be done by virtue hereof.

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the date or dates indicated.

 Date: February ___, 2000                By: /s/ Philip Strauss
                                             ----------------------------
                                             Philip Strauss
                                         Chairman, Chief Executive Officer and
                                         President (Principal Executive Officer)


 Date: February ___, 2000                By: /s/ Robert Rivkin
                                             ------------------------------
                                             Robert Rivkin
                                         Executive Vice President--Acquisitions,
                                         Secretary, Treasurer and Director


 Date: February ___, 2000                By: /s/ Jay J. Matulich
                                             ------------------------------
                                             Jay J. Matulich--Director

 Date: February ___, 2000                By: /s/ David J. Breazzano
                                             ------------------------------
                                             David J. Breazzano--Director


 Date: February ___, 2000                By: /s/ Charles Johnston
                                             ------------------------------
                                             Charles Johnston--Director


 Date: February ___, 2000                By: /s/ Judy K. Mencher
                                             ------------------------------
                                             Judy K. Mencher--Director

 Date: February ___, 2000                By: /s/ William B. Philipbar
                                             -------------------------------
                                             William B. Philipbar--Director


<PAGE>


                                INDEX TO EXHIBITS




EXHIBIT
NUMBER                               DESCRIPTION
- ---------   -------------------------------------------------------------------

 4.1  --    Amended and Restated Certificate of Incorporation of Waste Systems
            (incorporated by reference to Exhibit 4.3 to the Registration
            Statement of  Waste Systems on Form S-3, No. 333-37217).

 4.2  --    By-laws of Waste Systems (incorporated by reference to Exhibit 4.5
            to the Registration Statement of  Waste Systems on Form S-3, No.
            333-37217).

 4.3  --    Registration Rights Agreement, dated as of July 2, 1999, by and
            between Waste Systems and each of Kevin Baldwin, Kendall Baldwin,
            Kelly Baldwin and Kimberly Robb.

 4.4  --    Consent of Baldwin, L.P. dated July 2, 1999.

 5.1  --    Opinion of Morgan, Lewis & Bockius LLP.

23.1  --    Consent of KPMG LLP.

23.2  --    Consent of Morgan, Lewis & Bockius LLP (filed as part of Exhibit 5).

24.1  --    Power of Attorney (included with the signature page hereof).



<PAGE>

Exhibit 4.3



                  REGISTRATION  RIGHTS  AGREEMENT (this  Agreement)  dated as of
July 2, 1999 by and between  Waste  Systems  International,  Inc., a corporation
organized  under the laws of the State of Delaware  (the  Company),  and each of
Kevin  Baldwin,  Kendall  Baldwin,  Kelly  Baldwin and  Kimberly  Robb and their
respective permitted transferees and assigns (collectively, the Shareholders and
individually  a  Shareholder).  Capitalized  terms used herein and not otherwise
defined  shall  have  the  meanings  ascribed  to them in the  Merger  Agreement
(defined below).


                              W I T N E S S E T H :


                  WHEREAS,  concurrently  herewith, the Company, WSI Acquisition
Co.,  a Delaware  corporation  and a  wholly-owned  indirect  subsidiary  of the
Company, Eastern Trans-Waste of Maryland, Inc., a Maryland corporation, and each
of the  Shareholders is entering into an Agreement and Plan of Merger,  dated as
of July 2, 1999 (the Merger Agreement); and

                  WHEREAS,  the  execution  and delivery of this  Agreement is a
condition to entering into the Merger Agreement;

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


                                    ARTICLE I
                     REGISTRATION OF PURCHASER COMMON STOCK

                  1.1  Purchaser  shall  prepare  and  file  with  the  SEC  two
registration  statements  on Form S-3,  as follows:  (i) the first  registration
statement (the Initial Registration Statement), to be filed within 30 days after
the Closing  Date,  to register  for resale by the  Shareholders  the  Purchaser
Common  Stock,   and  (ii)  the  second   registration   statement  (the  Second
Registration Statement; and the Initial Registration Statement together with the
Second  Registration  Statement,  the  Registration  Statements)  within 30 days
following the date (the Conversion Date) on which the Purchaser  Preferred Stock
converts  into shares of Common Stock of the Company,  to register for resale by
the  Shareholders  such shares of Common  Stock  issued upon  conversion  of the
Purchaser  Preferred  Stock.  Purchaser  shall use its best efforts to cause the
Registration  Statements  to become  effective  within  180 days  following  the
Closing Date and shall keep the Registration  Statements  effective for at least
three years from the  respective  dates of  effectiveness  of such  Registration
Statements.

                  1.2 If Purchaser has not caused the Registration Statements to
become effective within 180 days after the Closing Date, each Shareholder  shall
be entitled to redeem (i) the shares of Purchaser  Preferred  Stock held by such
Shareholder,  in whole or in part, for immediately  available funds in an amount
equal to (1) the Liquidation  Preference per share of Purchaser  Preferred Stock
redeemed  plus (2) interest  accrued  thereon at a rate of 8% per annum from the
Closing  Date  through the date of  redemption  and (ii) the shares of Purchaser
Common  Stock held by such  Shareholder,  in whole or in part,  for  immediately
available  funds in an  amount  equal to (1) the  Exchange  Price  per  share of
Purchaser  Common Stock redeemed plus (2) interest  accrued thereon at a rate of
8% per annum from the Closing Date through the date of redemption.


                                   ARTICLE II
                             PIGGYBACK REGISTRATIONS

                  2.1 Right to  Piggyback.  Whenever  the  Company  proposes  to
register any of its equity  securities  under the Securities Act (other than for
use in a Rule 145 transaction or for  registrations  for employee plans) and the
registration  form to be used may be used for the  registration  of  Registrable
Securities  (a  Piggyback  Registration),  the  Company  will give notice to the
Shareholders of its intention to effect such a registration  and will include in
such  registration all Registrable  Securities with respect to which the Company
has received a written request from any Shareholder for inclusion therein within
fifteen  (15) days after the  receipt of the  Company's  notice,  subject to the
provisions  of Section 2.2 and 2.3 hereof.  Such  requests for  inclusion  shall
specify the number of Registrable  Securities intended to be disposed of by such
Shareholder and the intended method of distribution thereof.

                  2.2  Priority  on  Primary   Registrations.   If  a  Piggyback
Registration is an underwritten  primary  registration on behalf of the Company,
and the  managing  underwriters  advise the  Company  that in their  opinion the
number of securities  requested to be included in such registration  exceeds the
number  which can be sold in such  offering,  the Company  will  include in such
registration  (i) first,  the  securities  the Company  proposes  to sell,  (ii)
second,  that number of the  Registrable  Securities  and other shares of Common
Stock  proposed  to be  included  in  such  registration,  pro  rata  among  the
respective  holders  thereof  based upon the total  number of shares  which such
holders proposed to include in such registration.

                  2.3  Priority  on  Secondary  Registrations.  If  a  Piggyback
Registration  is an  underwritten  secondary  registration  on behalf of holders
(other than the  Shareholders)  of the  Company's  securities,  and the managing
underwriters  advise the Company that in their  opinion the number of securities
requested  to be included in such  registration  exceeds the number which can be
sold in such  offering,  the Company will include in such  registration  only so
many of the Registrable Securities requested to be included in such registration
by one or more Shareholders that the managing  underwriters deem advisable,  pro
rata among the  respective  Shareholders  thereof based upon the total number of
shares which such Shareholders proposed to include in such registration.


                                   ARTICLE III
                               HOLDBACK AGREEMENTS

                  3.1 Holdback Obligations. The Shareholders agree not to effect
any public sale or distribution  of equity  securities of the Company during the
seven (7) days prior to, and the 90-day period  beginning on, the effective date
of any underwritten registration in which they are participating (except as part
of such  underwritten  registration)  that  relates to  Registrable  Securities,
unless (i) the managing underwriters of the registered public offering otherwise
agree or (ii) the officers,  directors and 5%  stockholders of the Company shall
not be similarly restricted.


                                   ARTICLE IV
                                LOCK-UP AGREEMENT

                  4.1  Purchaser  and each  Shareholder  agrees  that (x)  until
December  31, 1999,  no  Shareholder  shall sell any shares of Purchaser  Common
Stock; provided,  however, that (i) the Shareholders may collectively sell up to
20% of their shares of Purchaser  Common Stock through  exercise of their rights
set forth in  Article  II hereof and (ii) each  Shareholder  may make  unlimited
gifts  of his or her  shares  of  Purchaser  Common  Stock  (including,  without
limitation,  transfers to trusts for estate planning  purposes or other vehicles
including  partnership and escrow agreements)  provided that any donee agrees to
be bound by the terms of the foregoing restrictions,  (y) during the period from
January 1, 2000 through June 30, 2000, the Shareholders may collectively sell up
to 20% of their shares of  Purchaser  Common Stock (less the number of shares of
Purchaser Common Stock sold by the  Shareholders  pursuant to clause (i) of this
Section 4.1) and may make  unlimited  gifts of their shares of Purchaser  Common
Stock (including,  without  limitation,  transfers to trusts for estate planning
purposes or other vehicles including partnership and escrow agreements) provided
that any donee  agrees to be bound by the terms of the  foregoing  restrictions,
and (z) after June 30,  2000,  no  restrictions  on sales of shares of Purchaser
Common Stock by the  Shareholders  shall apply. Any donee as described in clause
(ii) or  clause  (y) of this  Section  4.1  shall be  deemed a  Shareholder  for
purposes of this Agreement and a party hereto.


                                    ARTICLE V
                             REGISTRATION PROCEDURES

                  5.1  With  respect  to the  Initial  and  Second  Registration
Statements and whenever the Company has  determined to effect a registration  of
its  shares  and  one  or  more  Shareholders  have  exercised  their  Piggyback
Registration rights as herein provided,  the Company will use reasonable efforts
to  effect  the  registration  and the sale of such  Registrable  Securities  in
accordance  with the  intended  method of  disposition  thereof  as  quickly  as
possible,  and pursuant  thereto the Company will as expeditiously as reasonably
possible:

                  (a)  prepare  and file  with  the  Commission  a  Registration
Statement  with respect to such  Registrable  Securities  and use all reasonable
efforts  to cause such  Registration  Statement  to become and remain  effective
until the completion of the distribution contemplated thereby; provided, that as
promptly as practicable before filing a Registration  Statement or Prospectus or
any amendments or supplements  thereto,  the Company will (i) furnish to counsel
selected by the holders of Registrable Securities, without charge, copies of all
such documents  proposed to be filed, and (ii) notify each holder of Registrable
Securities  covered by such  Registration  Statement  of (x) any  request by the
Commission  to amend such  Registration  Statement  or amend or  supplement  any
Prospectus,  or (y) any stop order issued or threatened by the  Commission,  and
take all reasonable  actions required to prevent the entry of such stop order or
to promptly remove it if entered;

                  (b) (i) prepare and file with the Commission  such  amendments
and  supplements  to such  Registration  Statement  and the  Prospectus  used in
connection  therewith as may be necessary  to keep such  Registration  Statement
effective  until  all  Registrable   Securities  covered  by  such  Registration
Statement are sold in  accordance  with the intended  plan of  distribution  set
forth in such Registration Statement, and (ii) comply with the provisions of the
Securities 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;

                  (c) furnish to each seller of Registrable Securities,  without
charge,  such number of conformed copies of such  Registration  Statement,  each
amendment and supplement  thereto,  the Prospectus included in such Registration
Statement (including each preliminary Prospectus and, in each case including all
exhibits)  and such other  documents  as such seller may  reasonably  request in
order to facilitate the disposition of the Registrable  Securities owned by such
seller;

                  (d)  use  all   reasonable   efforts   (if  the   offering  is
underwritten)  to  furnish to each  seller of  Registrable  Securities,  without
charge,  a signed  copy,  addressed  to such  seller (and the  underwriters,  if
necessary),  of an opinion of counsel for the Company or special  counsel to the
holders of the Registrable  Securities  covered by such Registration  Statement,
dated  the  effective  date  of  such  Registration   Statement  (and,  if  such
Registration Statement includes an underwritten public offering,  dated the date
of the closing under the underwriting  agreement),  covering  substantially  the
same matters with respect to such  Registration  Statement  (and the  Prospectus
included  therein) as are  customarily  covered in  opinions of issuers  counsel
delivered to the underwriters in underwritten  public offerings,  and such other
legal  matters  as the  seller  (or the  underwriters,  if any)  may  reasonably
request;

                  (e)  notify  the  Shareholders,  at a time  when a  Prospectus
relating  thereto is required to be delivered  under the Securities  Act, of the
happening of any event known to the Company as a result of which the  Prospectus
included in such Registration  Statement,  as then in effect, contains an untrue
statement  of a material  fact or omits to state any fact  required to be stated
therein or necessary to make the  statements  therein not misleading in light of
the  circumstances  under which they were made,  and, at the request of any such
Shareholder,  the Company  will prepare and furnish  such  Shareholder,  without
charge, a reasonable number of copies of a supplement to or an amendment of such
Prospectus  as  may  be  necessary  so  that,  as  thereafter  delivered  to the
purchasers of such Registrable Securities,  such Prospectus shall not include 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 not misleading in
the light of the circumstances under which they were made;

                  (f)  cause  all  Registrable  Securities  to be listed on each
securities  exchange and quotation system on which similar  securities issued by
the Company are then listed;

                  (g)  provide  a  transfer  agent  and  registrar  for all such
Registrable  Securities  not later  than the  effective  date of the  applicable
Registration Statement;

                  (h) make  available for  inspection by the  Shareholders,  any
underwriter  participating  in any  disposition  pursuant  to such  Registration
Statement  and any  attorney,  accountant  or other  agent  retained by any such
Shareholder or underwriter, all financial and other records, pertinent corporate
documents  and  properties  of the Company,  and cause the  Company's  officers,
directors,  employees  and  independent  accountants  to supply all  information
reasonably requested by any such Shareholder,  underwriter, attorney, accountant
or agent in  connection  with such  Registration  Statement  to  enable  them to
conduct a reasonable investigation within the meaning of the Securities Act;

                  (i) use  reasonable  efforts to (i)  register  and qualify the
Registrable  Securities  covered  by  such  Registration  Statement  under  such
securities  or  blue  sky  laws  of  such   jurisdictions  as  the  Shareholders
representing  a  majority  of  the  Registrable   Securities  then   outstanding
reasonably request, (ii) prepare and file in those jurisdictions such amendments
(including post-effective  amendments) and supplements to such registrations and
qualifications as may be necessary to maintain the effectiveness  thereof at all
times until all Registrable  Securities  covered by such Registration  Statement
are sold in accordance with the intended plan of distribution  set forth in such
Registration Statement  (Registration Period ), (iii) take such other actions as
may be necessary to maintain such  registrations and qualifications in effect at
all times  during  the  Registration  Period  and (iv)  take all  other  actions
reasonably necessary or advisable to qualify the Registrable Securities for sale
in such jurisdictions; provided, however, that the Company shall not be required
in connection  therewith or as a condition thereto (1) to qualify to do business
in any jurisdiction  where it would not otherwise be required to qualify but for
this  Section  5.1(i),  (2) to subject  itself to general  taxation  in any such
jurisdiction,  (3) to file a general  consent  to service of process in any such
jurisdiction,  (4) to provide  any  undertakings  that  cause more than  nominal
expense or burden to the  Company  or (5) to make any  change in its  charter or
by-laws,  which in each case the Board of Directors of the Company determines to
be contrary to the best interests of the Company and its stockholders;

                  (j) subject to other  provisions  hereof,  use all  reasonable
efforts  to cause  such  Registrable  Securities  covered  by such  Registration
Statement to be registered with or approved by such other governmental  agencies
or authorities or  self-regulatory  organizations  as may be necessary to enable
the Shareholders to consummate the disposition of such  Registrable  Securities;
and

                  (k) promptly  notify the  Shareholders  of the issuance of any
stop order by the Commission or the issuance by any state securities  commission
or other  regulatory  authority of any order  suspending  the  qualification  or
exemption from  qualification  of any of the Registrable  Securities under state
securities  or ?blue sky laws,  and use every  reasonable  effort to obtain  the
lifting  at  the  earliest  possible  time  of any  stop  order  suspending  the
effectiveness  of any  Registration  Statement  or of any  order  preventing  or
suspending the use of any preliminary Prospectus.


                                   ARTICLE VI
                              REGISTRATION EXPENSES

                  6.1 Registration  Expenses.  All registration and filing fees,
fees and expenses of compliance  with securities or blue sky laws (including the
fees and expenses of counsel in connection with blue sky  qualifications  of the
Registrable  Securities),  printing expenses,  listing fees for securities to be
registered on a national  securities exchange or the Nasdaq Stock Market and all
independent certified public accountants,  underwriters (excluding discounts and
commissions)  and other Persons retained by the Company (all such expenses being
herein called ?Registration Expenses ), will be borne by the Company.

                  6.2   Shareholders   Expenses.   The  Company  shall  have  no
obligation to pay any underwriting discounts or commissions  attributable to the
sale of Registrable  Securities,  which expenses will be borne by all sellers of
securities  (including  the  Shareholders)  included  in  such  registration  in
proportion to the aggregate selling price of the securities to be so registered.


                                   ARTICLE VII
                                 INDEMNIFICATION

                  7.1 Company's Indemnification  Obligations. The Company agrees
to indemnify  and hold  harmless  each of the  Shareholders  (collectively,  the
Holder Indemnitees), as follows:

                           (i)  against  any and  all  loss,  liability,  claim,
                  damage  or  expense  arising  out of or based  upon an  untrue
                  statement  or alleged  untrue  statement  of a  material  fact
                  contained in any  Registration  Statement (or any amendment or
                  supplement  thereto),  including  all  documents  incorporated
                  therein by  reference,  or in any  preliminary  Prospectus  or
                  Prospectus  (or any  amendment or  supplement  thereto) or the
                  omission  or alleged  omission  therefrom  of 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;

                           (ii)  against  any and all  loss,  liability,  claim,
                  damage and expense to the extent of the aggregate  amount paid
                  in settlement of any litigation,  investigation  or proceeding
                  by any governmental  agency or body,  commenced or threatened,
                  or of any  claim  based  upon any  such  untrue  statement  or
                  omission or any such alleged untrue statement or omission,  if
                  such  settlement is effected  with the written  consent of the
                  Company; and

                           (iii) against any and all expense incurred by them in
                  connection with investigating,  preparing or defending against
                  any  litigation,   or   investigation  or  proceeding  by  any
                  governmental agency or body,  commenced or threatened,  or any
                  claim based upon any such untrue  statement or omission or any
                  such alleged untrue statement or omission,  to the extent that
                  any such expense is not paid under clause (i) or (ii) above;

provided,  that this  indemnity  does not apply to any loss,  liability,  claim,
damage or expense to the extent  arising out of an untrue  statement  or alleged
untrue  statement or omission or alleged  omission  made in reliance upon and in
conformity  with  information  furnished  to the  Company by or on behalf of the
Shareholders  expressly for use in the preparation of any Registration Statement
(or any amendment or supplement thereto),  including all documents  incorporated
therein by reference,  or of any  preliminary  Prospectus or Prospectus  (or any
amendment or supplement  thereto);  and provided further,  that the Company will
not be liable to any holder under the  indemnity  agreement in this Section 7.1,
with respect to any preliminary  Prospectus or the final Prospectus or the final
Prospectus  as amended or  supplemented,  as the case may be, to the extent that
any such loss,  liability,  claim, damage or expense of such holder results from
the fact that such holder sold Registrable  Securities to a Person to whom there
was not sent or given,  at or prior to the written  confirmation of such sale, a
copy of the final  Prospectus  or of the final  Prospectus  as then  amended  or
supplemented, whichever is most recent, if the Company has previously and timely
furnished copies thereof to such holder.

                  7.2 Holder's Indemnification  Obligations.  In connection with
any Registration Statement in which any Shareholder is participating,  each such
Shareholder agrees to indemnify and hold harmless (in the same manner and to the
same extent as set forth in Section 7.1 of this  Agreement) the Company and each
Person, if any, who controls the Company within the meaning of Section 15 of the
Securities  Act or Section 20 of the Exchange Act with respect to any  statement
or alleged  statement in or omission or alleged omission from such  Registration
Statement,  any preliminary,  final or summary Prospectus  contained therein, or
any amendment or supplement  thereto,  if such statement or alleged statement or
omission or alleged  omission was made about such holder in reliance upon and in
conformity  with  information  furnished  to the Company by or on behalf of such
holder.

                  7.3 Notices; Defense; Settlement. Promptly after receipt by an
indemnified  party hereunder of written notice of the commencement of any action
or  proceeding  involving  a claim  referred to in Section 7.1 or Section 7.2 of
this Agreement, such indemnified party will, if a claim in respect thereof is to
be made against an indemnifying  party, give written notice to the latter of the
commencement of such action; provided, that the failure of any indemnified party
to give notice as provided  herein shall not relieve the  indemnifying  party of
its obligations under Section 7.1 or Section 7.2 of this Agreement except to the
extent that the  indemnifying  party is actually  prejudiced  by such failure to
give notice.  In case any such action is brought  against an indemnified  party,
the  indemnifying  party will be  entitled to  participate  in and to assume the
defense thereof, with counsel reasonably satisfactory to such indemnified party,
and after notice from the indemnifying  party to such  indemnified  party of its
election so to assume the defense thereof,  the  indemnifying  party will not be
liable to such  indemnified  party for any legal or other expenses  subsequently
incurred by the latter in connection with the defense thereof.  Unless (i) legal
counsel for the indemnifying party notifies the indemnified party that there are
or may  be  legal  defenses  available  to the  indemnified  party  or to  other
indemnified parties which are different from or additional to those available to
the  indemnifying  party,  which, if the indemnified  party and the indemnifying
party were to be represented by the same counsel, would constitute a conflict of
interest of such counsel or prejudice  prosecution of the defenses  available to
such indemnified  party, or (ii) the indemnifying party shall assume the defense
of a claim and fail to diligently prosecute such defense, then in each such case
the indemnified  party, by notice to the indemnifying  party, may employ its own
counsel and control the defense of the claim and the indemnifying party shall be
liable for the reasonable fees, charges and disbursements of one firm of counsel
employed by the indemnified  party; and the indemnified  party shall be promptly
reimbursed or any such fees,  charges and  disbursements,  as and when incurred.
The  indemnifying  party  will not,  without  the prior  written  consent of the
indemnified party,  settle or compromise or consent to the entry of any judgment
in any pending or  threatened  claim,  action,  suit or proceeding in respect of
which  indemnification  may be sought hereunder (whether or not such indemnified
party or any  Person  who  controls  such  indemnified  party is a party to such
claim,  action,  suit or  proceeding),  unless such  settlement,  compromise  or
consent  includes an unconditional  release of such  indemnified  party from all
liability arising out of such claim, action, suit or proceeding. Notwithstanding
anything to the  contrary  set forth  herein,  and without  limiting  any of the
rights set forth above, in any event any party will have the right to retain, at
its own expense, counsel with respect to the defense of a claim.

                  7.4  Indemnity   Provision.   Each  of  the  Company  and  the
Shareholders  shall  provide  for  the  foregoing  indemnity  (with  appropriate
modifications)  in any  underwriting  agreement  with  respect  to any  required
registration or other qualification of securities under any Federal or state law
or regulation of any governmental authority other than the Securities Act.

                  7.5 Payments. The indemnification required by this Article VII
shall be made by periodic  payments of the amount  thereof  during the course of
the investigation or defense,  as and when bills are received or expense,  loss,
damage or liability is incurred.


                                  ARTICLE VIII
                   PARTICIPATION IN UNDERWRITTEN REGISTRATIONS

                  8.1 No Person may participate in any underwritten registration
hereunder unless such Person (i) agrees to sell such Person?s  securities on the
basis  provided  in any  underwriting  arrangements  approved  by the  Person or
Persons entitled  hereunder to approve such  arrangements and (ii) completes and
executes  all  questionnaires,  powers of  attorney,  indemnities,  underwriting
agreements,  escrow  agreements and other documents  required under the terms of
such  underwriting  arrangements  and  consistent  with the  provisions  of this
Agreement.


                                   ARTICLE IX
                                   DEFINITIONS

                  9.1      Terms.  As used in this Agreement, the following
defined terms shall have the meanings set forth below:


                  Business  Day means a day other than  Saturday,  Sunday or any
day on which banks located in the State of New York are  authorized or obligated
to close.

                  Commission  means the U.S. Securities and Exchange Commission.

                  Common Stock means the Common Stock of the Company,  par value
$.01 per share.

                  Exchange Act means the  Securities  Exchange  Act of 1934,  as
amended,  or any similar Federal statute then in effect,  and any reference to a
particular section thereof shall include a reference to the equivalent  section,
if any,  of any such  similar  Federal  statute,  and the rules and  regulations
thereunder.

                  Person  means  any   individual,   corporation,   partnership,
association,  trust or other entity or  organization,  including a government or
political subdivision or an agency or instrumentality thereof.

                  Prospectus  means the Prospectus  included in any Registration
Statement (including without limitation, a Prospectus that disclosed information
previously omitted from a Prospectus filed as part of an effective  Registration
Statement in reliance upon Rule 430A  promulgated  under the Securities Act), as
amended or supplemented by any Prospectus supplement,  with respect to the terms
of the offering of any portion of the  securities  covered by such  Registration
Statement, and all other amendments and supplements to the Prospectus, including
post-effective  amendments, and all material incorporated by reference or deemed
to be incorporated by reference in such Prospectus.

                  Registrable  Securities  means any  shares  of  Common  Stock,
including Purchaser Common Stock, held by the Shareholders. As to any particular
Registrable Securities,  such securities will cease to be Registrable Securities
when they have been (x)  effectively  registered  under the  Securities  Act and
disposed of in accordance with the registration  statement  covering them or (y)
transferred  pursuant to Rule 144 (or any similar  rule then in force) under the
Securities Act or otherwise  transferred and, in each case, new certificates for
them not bearing a restrictive  Securities Act legend have been delivered by the
Company and can be sold without complying with the registration  requirements of
the Securities Act.

                  Registration Statement means any Registration Statement of the
Company  which  covers  any  of  the  Registrable  Securities  pursuant  to  the
provisions  of  this  Agreement,   including  the  Prospectus,   amendments  and
supplements to such Registration Statement, including post-effective amendments,
all  exhibits and all material  incorporated  by reference in such  Registration
Statement.

                  Securities  Act means the  Securities Act of 1933, as amended,
or any similar Federal statute then in effect, and any reference to a particular
section  thereof shall include a reference to a comparable  section,  if any, of
any such similar Federal statute, and the rules and regulations thereunder.

                  9.2 Defined  Terms in  Corresponding  Sections.  The following
defined terms,  when used in this Agreement,  shall have the meaning ascribed to
them in the corresponding Sections of this Agreement listed below:

         Agreement                   --      Preamble
         Company                     --      Preamble
         Holder Indemnitees          --      Section 7.1
         Shareholders                --      Preamble
         Piggyback Registration      --      Section 2.1
         Registration Expenses       --      Section 6.1


                                    ARTICLE X
                                  MISCELLANEOUS

                  10.1  Remedies.  In the event of a breach by any party to this
Agreement of its  obligations  under this  Agreement,  any party injured by such
breach,  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 parties  agree that the  provisions  of this
Agreement shall be specifically enforceable, it being agreed by the parties that
the remedy at law, including monetary damages,  for breach of any such provision
will be inadequate  compensation for any loss and that any defense in any action
for specific performance that a remedy at law would be adequate is waived.

                  10.2  Amendments  and Waivers.  Except as  otherwise  provided
herein, no modification,  amendment or waiver of any provision of this Agreement
will be effective  against the Company or any holder of Registrable  Securities,
unless  such  modification,  amendment  or waiver is  approved in writing by the
Company  and  the  Shareholders  representing  a  majority  of  the  Registrable
Securities  then  outstanding.  The  failure of any party to enforce  any of the
provisions  of this  Agreement  will in no way be  construed as a waiver of such
provisions  and will not affect the right of such  party  thereafter  to enforce
each and every provision of this Agreement in accordance with its terms.

                  10.3  Successors and Assigns.  All covenants and agreements in
this  Agreement by or on behalf of any of the parties hereto will bind and inure
to the benefit of the  respective  successors  and assigns of the parties hereto
whether so expressed or not.

                  10.4 Notices.  All notices,  requests and other communications
hereunder  must be in writing and will be deemed to have been duly given only if
delivered  personally  against written  receipt or by facsimile  transmission or
mailed by pre-paid  registered or certified  mail,  return receipt  requested or
mailed by overnight courier prepaid to the parties at the following addresses or
facsimile numbers:

                  (a)        If to the Company, to:

                                     Waste Systems International, Inc.
                                     420 Bedford Street, Suite 300
                                     Lexington, MA  02420
                                     Facsimile No.:  (781) 862-2929
                                     Attn:  Arthur L. Streeter II, Esq.

                             with a copy to:

                                     Morgan, Lewis & Bockius LLP
                                     101 Park Avenue
                                     New York, New York  10178
                                     Facsimile No.: (212) 309-6273
                                     Attn.:  Nancy H. Corbett, Esq.

                  (b)        If to the Shareholders, to:

                                     Kendall Baldwin
                                     412 Deale Road
                                     Tracy's Landing, Maryland 20779

                                     Kevin Baldwin
                                     1717 Fallowfield Court
                                     Crofton, Maryland 21114

                                     Kelly Baldwin
                                     2123 Colonel Way
                                     Odenton, Maryland 21113

                                     Kimberly Robb
                                     6714 Duck Lane
                                     Tracy's Landing, Maryland 20779

                             with a copy to:

                                     Cooper and Associates, P.C.
                                     1050 17th St., N.W.
                                     Suite 400
                                     Washington, D.C. 20036
                                     Facsimile No.: (202) 293-5855
                                     Attn.:  A. J. Cooper, Esq.

                  (c)        If to any other holder, to:

                                     The last address (or facsimile  number) for
such Person set forth in the records of the Company.

All such  notices,  requests  and  other  communications  will (i) if  delivered
personally  to the address as provided in this Section 8.4, be deemed given upon
delivery, (ii) if delivered by facsimile transmission to the facsimile number as
provided in this  Section  8.4, be deemed  given upon  receipt of  confirmation,
(iii) if  delivered  by mail in the  manner  described  above to the  address as
provided in this  Section  8.4, be deemed given on the earlier of the third full
Business Day following the day of mailing or upon receipt, and (iv) if delivered
by  overnight  courier to the address  provided in this  Section  8.4, be deemed
given on the earlier of the first  Business Day  following the date sent by such
overnight  courier or upon  receipt.  Any party from time to time may change its
address,  facsimile  number or other  information  for the purpose of notices to
that party by giving notice specifying such change to the other parties hereto.

                  10.5 Invalid Provisions. If any provision of this Agreement is
held to be illegal,  invalid or  unenforceable  under any present or future law,
and if the rights or  obligations  of any party hereto under this Agreement will
not be materially  and adversely  affected  thereby,  (i) such provision will be
fully  severable,  (ii) this Agreement will be construed and enforced as if such
illegal,  invalid or unenforceable  provision had never comprised a part hereof,
(iii) the remaining  provisions of this  Agreement will remain in full force and
effect  and  will not be  affected  by the  illegal,  invalid  or  unenforceable
provision or by its severance herefrom and (iv) in lieu of such illegal, invalid
or unenforceable provision,  there will be added automatically as a part of this
Agreement a legal,  valid and enforceable  provision as similar in terms to such
illegal, invalid or unenforceable provision as may be possible.

                  10.6 Governing  Law. This  Agreement  shall be governed by and
construed in accordance  with the laws of the State of Delaware,  without giving
effect to any choice of law or conflict of law provision or rule (whether of the
State of Delaware or any other jurisdiction) that would cause the application of
the laws of any jurisdiction other than the State of Delaware.

                  10.7  Counterparts.  This  Agreement  may be  executed  in any
number of  counterparts,  each of which will be deemed an  original,  but all of
which together will constitute one and the same instrument.


                                   ARTICLE XI
                               RULE 144 REPORTING

                  11.1 The Company hereby agrees as follows:

                  (a) The  Company  shall use its best  efforts to make and keep
public information available,  as those terms are understood and defined in Rule
144 under the Securities Act at all times.

                  (b) The  Company  shall use its best  efforts to file with the
Commission in a timely manner all reports and other  documents as the Commission
may prescribe under Section 13(a) or 15(d) of the Exchange Act at any time after
the Company has become  subject to such reporting  requirements  of the Exchange
Act.

                  (c) The Company shall furnish,  without charge, to each holder
of Registrable  Securities forthwith upon request (i) a written statement by the
Company as to its compliance with the reporting requirements of Rule 144, and of
the  Securities  Act and the Exchange Act, (ii) a copy of the most recent annual
or quarterly  report of the Company,  and (iii) such other reports and documents
so filed as a holder  may  reasonably  request  to avail  itself  of any rule or
regulation of the Commission allowing a holder of Registrable Securities to sell
any such securities without registration.


<PAGE>




                  IN WITNESS  WHEREOF,  the  parties  hereto have  executed  and
delivered this Agreement as of the date first above written.

                                   COMPANY:

                        WASTE SYSTEMS INTERNATIONAL, INC.



                  By:  /s/ Robert S. Rivkin
                       --------------------------------------
                Name:  Robert S. Rivkin
                Title: Executive Vice President - Acquisitions, Secretary,
                       Treasurer and Director


                                   SHAREHOLDERS:



                                   /s/ Kevin Baldwin
                                  ---------------------------------
                                  Kevin Baldwin



                                  /s/ Kendall Baldwin
                                  ---------------------------------
                                  Kendall Baldwin



                                  /s/ Kelly Baldwin
                                  ---------------------------------
                                  Kelly Baldwin



                                  /s/ Kimberly Robb
                                  ---------------------------------
                                  Kimberly Robb

<PAGE>



Exhibit 4.4

                            CONSENT OF BALDWIN, L.P.


         This Consent is made by H.G. Baldwin,  as general partner, on behalf of
Baldwin,  L.P., a limited partnership  organized in accordance with the Maryland
Uniform Limited  Partnership Act, pursuant to the Registration  Rights Agreement
dated as of July 2, 1999 ("Registration  Rights Agreement"),  by and among Waste
Systems International,  Inc., a Delaware corporation, and each of Kevin Baldwin,
Kendall Baldwin,  Kelly Baldwin and Kimberly Robb and their respective permitted
transferees and assigns as set forth in the Registration  Rights Agreement (each
a  "Shareholder").  All  capitalized  terms not  defined  herein  shall have the
meanings set forth in the Registration Rights Agreement.

         In accordance with Article IV, Section 4.1 of the  Registration  Rights
Agreement,  Baldwin,  L.P.,  as a donee of One Hundred  Forty Two  Thousand  One
Hundred Six (142,106)  shares of Purchaser  Common Stock and Eight Hundred (800)
Shares of  Purchaser  Preferred  Stock  from each  Shareholder  and a  permitted
transferee  under the Registration  Rights  Agreement,  hereby agrees,  that for
purposes of Section 4.1 of the  Registration  Rights  Agreement,  Baldwin,  L.P.
shall be deemed a "Shareholder"  subject to the restrictions of clauses (x), (y)
and (z) of such Section 4.1,  and  otherwise  agrees to be bound by the terms of
the restrictions contained in Section 4.1 of the Registration Rights Agreement.

         IN WITNESS WHEREOF,  the undersigned  general partner of Baldwin,  L.P.
has signed this Consent as of the 2nd day of July, 1999.


BALDWIN, L.P.


By:/s/  H.G. Baldwin
H.G. Baldwin, General Partner



                                                              Exhibit 5.1



                                                          _______________, 1999


Waste Systems International, Inc.
420 Bedford Street - Suite 300
Lexington, Massachusetts 02420

         Re:      Issuance of Shares Pursuant to
                  Registration Statement on Form S-3

Ladies and Gentlemen:

         We have  acted as  counsel  to Waste  Systems  International,  Inc.,  a
Delaware  corporation  (the  "Company"),  in connection with the preparation and
filing with the Securities and Exchange  Commission  under the Securities Act of
1933, as amended,  of a  Registration  Statement on Form S-3 (the  "Registration
Statement")  relating to the secondary offering by certain Selling  Stockholders
of an aggregate  of 2,678,620  shares (the  "Shares")  of the  Company's  Common
Stock, par value $.01 per share.

         In so  acting,  we have  examined  originals,  or copies  certified  or
otherwise identified to our satisfaction, of the Certificate of Incorporation of
the  Company  and the  By-Laws  of the  Company  and  such  other  documents  or
instruments as we have deemed  necessary for purposes of the opinions  expressed
below.  We have assumed that the Shares have been issued against  receipt of the
consideration  approved by the Board of  Directors of the Company or a committee
thereof,  which  was no less  than the par  value  thereof,  and were  issued in
compliance with applicable federal and state securities laws.

         Based on the foregoing, we are of the following opinion:

         1. The Company is a corporation duly  incorporated and validly existing
under the laws of the State of Delaware.

         2. The Shares  have been duly  authorized  and  validly  issued and are
fully paid and non-assessable.

         We are expressing the opinions above as members of the Bar of the State
of New York  and  express  no  opinion  as to any law  other  than  the  General
Corporation Law of the State of Delaware.

         We consent to the use of this opinion as an exhibit to the Registration
Statement  and to the use of our name under the caption  "Legal  Matters" in the
Registration Statement.

         Very truly yours,



<PAGE>
Exhibit 23.1


                       CONSENT OF INDEPENDENT ACCOUNTANTS

         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.



         KPMG LLP


Boston, Massachusetts
February 16, 1999



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