1
                                                                     Exhibit 4.2

                      SECOND AMENDED, RESTATED AND EXTENDED



                            WASTE DISPOSAL AGREEMENT



                                     between



                       ----------------------------------
                                 (Municipality)


                                       and


             PENOBSCOT ENERGY RECOVERY COMPANY, LIMITED PARTNERSHIP



DATED:  _____________________
   2

                                TABLE OF CONTENTS

Article I      Definitions ..................................................  3
Article II     Representations, Warranties and Covenants..................... 10
Article III    Operation of the Facility..................................... 13
Article IV     Weighing ..................................................... 14
Article V      Delivery of Waste to Company.................................. 16
Article VI     Determination of Tipping Fee.................................. 20
Article VII    Capital and Maintenance Reserve Account....................... 22
Article VIII   Term of the Agreement, Termination............................ 27
Article IX     Unacceptable and Hazardous Waste.............................. 30
Article X      Suspension of Operations...................................... 31
Article XI     Damage or Destruction......................................... 32
Article XII    Municipal Review Committee.................................... 32
Article XIII   Default; Liquidated Damages................................... 36
Article XIV    Change in Law ................................................ 39
Article XV     Force Majeure ................................................ 41
Article XVI    Additional Remedies Upon Material, Adverse Changes............ 42
Article XVII   Assignment.................................................... 46
Article XVIII  Performance Credits........................................... 47
Article XIX    Exercise of Option to Extend Term; Option To Purchase
               Partnership Interests; Option To Purchase Limited
               Partnership Interests ........................................ 51
Article XX     Notices....................................................... 57
Article XXI    Binding Effect ............................................... 58
Article XXII   Other Documents............................................... 58
Article XXIII  Headings...................................................... 58
Article XXIV   Counterparts.................................................. 58
Article XXV    Applicable Law ............................................... 59
Article XXVI   Amendment of Agreement........................................ 59
Article XXVII  Severability ................................................. 59
Article XXVIII Relationship of the Parties................................... 59
Article XXIX   Representatives............................................... 59
Article XXX    Integration; Conflicts........................................ 60
Article XXXI   Consents...................................................... 60
Article XXXII  Arbitration................................................... 60


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Article XXXIII Miscellaneous ................................................ 61

                                    Schedules

Schedule A     Notices;  Guaranteed Annual Tonnage.......................i
Schedule B     Charter Municipalities and Reference GATs................ii
Schedule C     Tipping Fee Calculation..................................vi
Schedule D     Procedure To Exercise Option To Purchase Facility under
               Article XVI, Paragraph A ...............................xii
Schedule E     Distributable Cash.....................................xiii
Schedule F     Performance Standards..................................xvii
Schedule G     Types of Vehicles........................................xx
Schedule H     [Deleted]
Schedule H1    [Deleted]
Schedule I     [Deleted]
Schedule J     Litigation and Governmental Proceeding Disclosure......xxiv
Schedule K     [Deleted]

Acknowledgment of Bangor Hydro-Electric Company
Acknowledgment and Agreement of Municipal Review Committee, Inc.


                                      -3-
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         SECOND AMENDED, RESTATED AND EXTENDED WASTE DISPOSAL AGREEMENT

            This Second Amended,  Restated and Extended Waste Disposal Agreement
(this  "Agreement")  is  entered  into in the  State  of  Maine  by and  between
__________  ______________,  Maine, a municipal  corporation  hereinafter called
"MUNICIPALITY";  and Penobscot Energy Recovery Company,  Limited Partnership,  a
Maine limited partnership hereinafter called "COMPANY," and amends, restates and
extends in its entirety that certain First Amended and Restated  Waste  Disposal
Agreement,  between  MUNICIPALITY and COMPANY,  dated as of _________,  199_, as
heretofore  amended  and  supplemented  (as so  amended  and  supplemented,  the
"Outstanding Agreement").

            WHEREAS, MUNICIPALITY is in need of a comprehensive, environmentally
sound,  reliable,  long-term  management  strategy  for handling the present and
projected volumes of non-hazardous Solid Waste generated within MUNICIPALITY;

            WHEREAS, it is the policy of the State of Maine to reduce the volume
of Solid Waste going into  landfills,  to recycle Solid Waste whenever  possible
and to maximize resource recovery;

            WHEREAS,  improved  waste  management  within  the  region  of which
MUNICIPALITY is a part will serve the following goals:

            1. Recovery of energy from waste;

            2. Reduction in indiscriminate disposal of waste;

            3. Coordination of Solid Waste management among political
subdivisions; and

            4. Orderly and deliberate development of financially secure waste
facilities:

            WHEREAS,  State  law  requires  each  municipality  to  provide  for
disposal  facilities  for  domestic  and  commercial  non-hazardous  Solid Waste
generated within such municipality;


                                      -4-
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            WHEREAS,   Solid  Waste  issues  present  communities  with  serious
long-term  financial,  management,  governmental  and technical  problems in the
disposal of Solid Waste;

            WHEREAS,  effective  management  of Solid  Waste is  crucial  to the
continued  financial  well-being of MUNICIPALITY and the region of which it is a
part;

            WHEREAS,  COMPANY owns and operates a facility that recovers certain
recyclable  materials and otherwise converts Solid Waste into energy in the Town
of Orrington, Penobscot County, Maine (as hereinafter defined, the "Facility");

            WHEREAS,  MUNICIPALITY  is willing  to assure  the steady  supply of
specified quantities of Solid Waste to the Facility for a fixed period; and

            WHEREAS,  approximately  130 communities  delivering  Solid Waste to
COMPANY (as hereinafter  defined, the "Charter  Municipalities")  have so-called
"charter municipality" waste disposal agreements with COMPANY; and

            WHEREAS,  COMPANY and Bangor Hydro-Electric  Company (as hereinafter
defined,  "Bangor  Hydro")  have  entered into a Power  Purchase  Agreement,  as
amended,  pursuant to which  Bangor  Hydro has agreed to purchase  the  electric
generating capacity of, and electric power generated at, the Facility; and

            WHEREAS,  Bangor  Hydro  desires  to reduce the price for energy and
capacity as now provided for in the Power  Purchase  Agreement and has requested
that  COMPANY  amend the Power  Purchase  Agreement  to reduce the burden on its
ratepayers; and

            WHEREAS,  to effect such  amendment it is necessary to refinance the
outstanding  indebtedness  that  financed  the  Facility as well as to amend the
outstanding "charter municipality" waste disposal agreements between COMPANY and
such   charter    municipalities   (as   hereinafter   defined,   the   "Charter
Municipalities"); and

            WHEREAS,  MUNICIPALITY and other Charter  Municipalities are members
of the Municipal  Review  Committee,  Inc., which has engaged in discussions and
negotiations  with Bangor  Hydro and COMPANY on behalf of  MUNICIPALITY  and the
other  Charter  Municipalities,  resulting  in a plan to  restructure  the Power
Purchase Agreement and the


                                      -5-
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outstanding "charter municipality" waste disposal agreements and to refinance
the outstanding indebtedness that financed the Facility; and

            WHEREAS,  COMPANY seeks to amend, supplement and extend its existing
waste  disposal  agreement with  MUNICIPALITY  and  substantially  similar waste
disposal  agreements with other Charter  Municipalities it serves,  and, for the
convenience of the parties,  to restate such amended,  supplemented and extended
agreements;

            NOW, THEREFORE, in consideration of the foregoing and the mutual
agreements hereinafter set forth, and other good and valuable consideration, the
receipt and sufficiency thereof being hereby acknowledged, MUNICIPALITY and
COMPANY hereby agree to amend, supplement and extend the Outstanding Agreement
and to restate the Outstanding Agreement as so amended, supplemented and
extended, as follows: ARTICLE I. DEFINITIONS

            A. "Acceptable  Waste" means [this definition to be adapted for each
Charter  Municipality  based on  applicable  provisions  of its  existing  waste
disposal agreement] Solid Waste,  including all ordinary  household,  municipal,
institutional,  commercial  and  industrial  wastes which  consist  primarily of
combustible  materials,  except for the following  (unless  Specially  Permitted
Waste):

            1.    demolition or construction debris from building and roadway
                  projects or locations;

            2.    liquid wastes or sludges;

            3.    abandoned or junk vehicles;

            4.    Hazardous Waste;

            5.    dead animals or portions thereof or other pathological wastes;

            6.    water treatment facility residues;

            7.    tree stumps;

            8.    tannery sludge;


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            9.    waste oil;

            10.   discarded "white goods" such as freezers, refrigerators,
                  washing machines, etc.;

            11.   waste  which in the  reasonable  judgment of  COMPANY'S  weigh
                  station  operator based solely upon a visual  inspection has a
                  BTU content of less than 4000 BTU's per pound unless the waste
                  fails  to meet  the  aforementioned  BTU  minimum  requirement
                  solely because of the moisture  content of such waste and such
                  moisture content is due to abnormally wet weather conditions;

            Notwithstanding  the  above  limitations,   Acceptable  Waste  shall
include Specially Permitted Waste.

            B.  "Agreement"  means this Second  Amended,  Restated  and Extended
Waste  Disposal   Agreement   (including   Schedules  attached  hereto)  between
MUNICIPALITY and COMPANY, as it may be amended or supplemented from time to time
in accordance with its terms.

            C. "Amending Charter Municipality" means a Charter Municipality that
enters  into a waste  disposal  agreement  with  COMPANY on terms  substantially
similar to those  contained in this  Agreement on or before  September 30, 1998.
Amending  Charter  Municipalities  shall also  include (i) those  municipalities
which, with the prior approval of the Municipal Review  Committee,  enter into a
new waste disposal agreement with COMPANY and those  municipalities  which amend
and supplement their outstanding waste disposal agreements with COMPANY on terms
substantially  similar to those  contained in this Agreement after September 30,
1998 and before March 31, 2004,  and (ii) those  municipalities  which after the
Closing Date enter into an  agreement  with  COMPANY and are  recognized  by the
Municipal  Review  Committee  and  COMPANY as an Amending  Charter  Municipality
pursuant  to  Article  VIII(C);   provided,   however,   that  Amending  Charter
Municipalities described in clauses (i) and (ii) of this sentence shall not have
the rights of Amending Charter Municipalities to receive warrants for shares of


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common stock of Bangor Hydro, as contemplated by Article XII, paragraph E, or to
purchase limited  partnership  interests in COMPANY,  as contemplated by Article
XIX.

            D. "Bangor Hydro" means Bangor Hydro-Electric Company, a Maine
corporation, or any permitted successors as Buyer under the Power Purchase
Agreement, dated as of June 21, 1984, as amended through Amendment No. 2, with
the COMPANY.

            E. "By-Pass Waste" means all Acceptable Waste which COMPANY is
required but is unable to accept at the Facility.

            F. "Capital and Maintenance Reserve Account" means the reserve
account established by COMPANY and more specifically described in Article VII.

            G. "Change in Law" means those events described in Article XIV
hereof.

            H.  "Charter   Municipality"   means  the   MUNICIPALITY   and  each
municipality that is a party to a waste disposal agreement with COMPANY on terms
substantially  similar to those contained in the  Outstanding  Agreement or this
Agreement,  and which are listed and designated as such on Schedule B hereto, as
such schedule may be amended by COMPANY upon the request of the Municipal Review
Committee  from time to time in  accordance  with the  provisions  of Article V,
paragraph F.

            I. "Closing Date" means the date on which refunding bonds are issued
by the Finance Authority of Maine, or other issuer, and funds are made available
to  COMPANY  to  redeem  all of the  outstanding  bonds  issued  by the  Town of
Orrington,  Maine,  to finance the Facility,  and Bangor Hydro and COMPANY shall
have executed and delivered Amendment No. 2 to the Power Purchase Agreement with
COMPANY,  Bangor Hydro and the other  parties  thereto  shall have  executed and
delivered the warrant agreement  referenced in Article XII, paragraph E, and the
parties to the Trust  Agreement  shall have  executed  and  delivered  the Trust
Agreement.

            J. "COMPANY" means Penobscot Energy Recovery Company, Limited
Partnership, a Maine limited partnership, or any successor thereto or assign
thereof as permitted by this Agreement.


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            K. "CPI-U" means the Consumer Price Index-All Urban Consumers (U.S.
cities average, all items) as published bi-monthly by the United States Bureau
of Labor Statistics in a report currently entitled "CPI Detailed Report." If
this index ceases to be published, a comparable index shall be designated by
agreement of COMPANY and the Municipal Review Committee.

            L. "Delivery Hours" means a minimum of not less than eight (8) hours
per day Monday through Saturday,  certain specified  holidays  excluded,  during
which deliveries of Acceptable Waste, will be normally accepted at the Facility.
Such hours shall be determined by COMPANY with due  consideration to be given to
the needs of MUNICIPALITY  and the concerns of the Host  Municipality.  Delivery
Hours may be suspended by COMPANY due to a Suspension of  Operations,  hazardous
conditions or lawful orders to do so.

            M. "District" means the Penobscot Valley Refuse Disposal District or
any other successor  district which may be formed to exercise some or all of the
powers of said district or those powers which are conferred upon  municipalities
pursuant to 38 M.R.S.A. Chapter 17.

            N. "Equity Charter Municipality" means an Amending Charter
Municipality that timely exercises the option to participate in the purchase of
a limited partnership interest in COMPANY granted in Article XIX, paragraph C.

            O. "Facility" means the waste to energy facility owned by COMPANY in
Orrington designed to convert Acceptable Waste into electrical and/or steam
energy.

            P. "FEPR" means front end processing residue, including glass, grit,
ferrous metals and other non-processible material removed from the waste stream
prior to combustion.

            Q. "Force Majeure Event" means an act of God, act of public enemy,
war, earthquake, storm, flood, and other causes not reasonably within the
control of any party invoking Article XV for its benefits.


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            R.  "Guaranteed   Annual  Tonnage"  means  the  number  of  tons  of
Acceptable  Waste that  originates  within  its  boundaries  which  MUNICIPALITY
guarantees to deliver to the Facility  during the  Operating  Year (as initially
set forth on Schedule A attached hereto), as such number of tons may be adjusted
pursuant to Article V hereof.

            S.  "Guaranteed  Plant  Capacity  Share"  means a number  of tons of
Acceptable Waste equal to 125% of MUNICIPALITY's Guaranteed Annual Tonnage as in
effect with respect to  MUNICIPALITY  in any  Operating  Year,  which COMPANY is
required to accept from MUNICIPALITY during such Operating Year.

            T. "Hazardous Waste" means waste with inherent properties which make
such waste dangerous to manage by ordinary means, including, but not limited to,
chemicals, explosives, pathological wastes, radioactive wastes, toxic wastes and
other wastes  defined as hazardous at any time during the term of this Agreement
by the State of Maine or the Resource  Conservation  and Recovery Act of 1976 as
amended, or other Federal,  State or local laws,  regulations,  orders, or other
actions promulgated or taken with respect thereto.

            U. "Host Municipality" means the municipality of Orrington,
Penobscot County, Maine which is not a Charter Municipality.

            V.  "MRC  Administration  Authorization"  means  the  bylaws  of the
Municipal Review Committee, as amended and restated and in effect on the Closing
Date,  which govern the rights and obligations of the Municipal Review Committee
in its capacity as advisor or agent to the Amending  Charter  Municipalities  in
respect  of  all or  certain  of its  duties  under  this  Agreement  and  other
agreements  contemplated  by this Agreement,  including  Articles XII and XIX of
this Agreement, as such bylaws may be amended or supplemented from time to time,
or  any  successor  or  supplemental  agreement  between  the  Municipal  Review
Committee and the Amending Charter Municipalities.

            W. "Municipal Review Committee" means the Municipal Review
Committee, Inc., a nonprofit corporation organized under the laws of the State
of Maine, or any


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successor  entity  operating as the Municipal  Review  Committee as described in
Article XII as the same may be constituted from time to time.

            X. "Operating Year" means a twelve (12) month period of Facility
operation beginning January 1 and concluding December 31.

            Y. "Outstanding Agreement" means the existing First Amended and
Restated Waste Disposal Agreement, dated _______________, 199_, between
MUNICIPALITY and COMPANY, as such had been heretofore amended and supplemented.

            Z. "Pass-through Cost" has the meaning given in Paragraph B of
Schedule C to this Agreement.

            AA.  "Reference GAT" means,  with respect to a Charter  Municipality
and as of the date of  determination,  the  Guaranteed  Annual Tonnage set forth
opposite  such  Charter  Municipality  on  Schedule  B, which  initially  is the
Guaranteed Annual Tonnage of such Charter  Municipality as of March 31, 1995, as
such may be  amended  from time to time in  accordance  with the  provisions  of
Article V, paragraph F.

            BB. "Residue" means materials (including, but not limited to, bottom
ash, fly ash, and solids from emission control equipment) remaining after
processing of Acceptable Waste at the Facility.

            CC.  "Solid  Waste"  means   non-hazardous   solid   materials  with
insufficient  liquid  content  to be  free-flowing  which are of no value to the
immediate  source  from  which  they  emanate as  evidenced  by their  disposal,
discard,  or abandonment  without  consideration in return,  including,  but not
limited to, rubbish,  sludge from a wastewater treatment plant, scrap materials,
junk, and refuse,  but excluding septic tank sludge and agricultural  waste. The
fact  that  value  may be  derived  from  such  solid  materials  by  recycling,
reprocessing,  or other method of resource  recovery  shall have no bearing upon
their classification as "Solid Waste."

            DD. "Specially Permitted Waste" means Unacceptable Waste which
COMPANY by written addendum to this Agreement agrees to accept at the Facility
to the extent that efficient operation of


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the Facility will permit, subject to such conditions and limitations as may be
imposed by COMPANY.

            EE. "Spot Market Contract" means a written or oral agreement for not
more  than  one  (1)  year   between   COMPANY  and  an  entity,   municipal  or
non-municipal, allowing deliveries of Acceptable Waste on an interruptible basis
at COMPANY's option in each case, pursuant to which said entity has the right to
deliver  Acceptable  Waste to the  Facility,  and COMPANY  agrees to accept such
Acceptable Waste, subject to interruption,  or termination at the COMPANY's sole
discretion.

            FF.  "Supplemental  Fuel" means, oil, coal, natural gas, wood chips,
other  biomass,  tires,  or any other fuel burned or consumed in the  Facility's
combustion  units as a supplement  to  Acceptable  Waste,  excluding  oil burned
during a start up or shut down of the Facility.

            GG.   "Suspension  of  Operations"   means  the  suspension  of  the
Facility's  operation for a temporary period to allow for repairs,  maintenance,
retrofitting, change in law modifications and regulatory compliance during which
COMPANY is unable to accept delivery of Acceptable Waste at the Facility.

            HH. "Termination of Operations" means the termination of the
Facility's operation with no apparent intention or ability to resume operation.

            II.  "Tipping  Fee"  means  the  payments  required  to be  made  by
MUNICIPALITY  to  COMPANY  for  processing  Acceptable  Waste  at the  Facility,
diverting  By-Pass  Waste  to  another  location  at the  COMPANY's  cost  or as
otherwise provided for in this Agreement.

            JJ. "Trust Agreement" means the [Trust Agreement] to be entered into
between COMPANY and a trustee, pursuant to which a trust is established to
receive all revenues of the Facility and to distribute the same as therein
provided.

            KK. "Unacceptable Waste" means all Solid Waste that is not
Acceptable Waste.


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            ARTICLE II. REPRESENTATIONS, WARRANTIES AND COVENANTS

            A. COMPANY warrants and represents to MUNICIPALITY the following:

                  1. COMPANY is a limited partnership duly organized and validly
existing under the laws of the State of Maine in good  standing,  and authorized
to do  business  under the laws of the State of Maine and that it has full power
and  authority to execute and to enter into this  Agreement  and is qualified to
perform this Agreement in accordance with its terms.

                  2. The execution and delivery of this Agreement by COMPANY has
been duly authorized by all appropriate  partnership  actions and this Agreement
constitutes the legal,  valid and binding  obligation of COMPANY  enforceable in
accordance with its terms (except as enforceability may be limited by applicable
bankruptcy or similar laws  affecting  creditor's  rights and by  application of
equitable principles if equitable remedies are sought).

                  3. Assuming the redemption of all Town of Orrington  bonds and
cancellation  of the letter of credit  supporting  such  bonds,  the  execution,
delivery  and  performance  of this  Agreement  by COMPANY  will not violate any
provision  of law,  any order of any court or other  agency of  government,  the
Agreement  of Limited  Partnership  of  COMPANY,  as amended,  supplemented  and
restated,  or any  indenture,  material  agreement or other  instrument to which
COMPANY  is now a party or by which it or any of its  properties  or  assets  is
bound,  or be in conflict  with,  result in a breach of or  constitute a default
(with  due  notice of the  passage  of time or both)  under any such  indenture,
agreement or other  instrument,  or result in the creation or  imposition of any
lien,  charge or encumbrance of any nature whatsoever upon any of the properties
or assets of COMPANY.

                  4.  Except  as set  forth  on  Schedule  J, to the best of its
knowledge,  there  is  no  pending  or  threatened  litigation  or  governmental
proceeding  which  would  adversely  affect  COMPANY's  ability to  operate  the
Facility  or would  affect its  ability to perform  its  obligations  under this
Agreement.


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                  5.  Each  general  partner  of  COMPANY  is  either a  limited
partnership or corporation duly organized and validly existing under the laws of
the State of its  organization  in good standing and qualified to do business in
the State of Maine,  and has the power to enter into, and had duly authorized by
proper action the execution and delivery of, this  Agreement as general  partner
on behalf of COMPANY.  The  execution  and  delivery of this  Agreement  by such
general  partners of COMPANY and  performance  of this Agreement by such general
partners of COMPANY and  performance  of this  Agreement by COMPANY will not (i)
violate  any  provision  of law or any  order of any  court or other  agency  of
government  applicable to such general partner,  (ii) violate the organizational
documents of such general  partner,  or (iii) be in conflict  with,  result in a
breach of, or  constitute  a default  (with due notice or the passage of time or
both) under any such material indenture,  agreement or other instrument to which
such general  partner is now a party or by which it or any of its  properties or
assets is bound.

                  6. COMPANY shall provide to MUNICIPALITY an opinion of its
legal counsel to the effect of Paragraphs 1 through 5.

            B. MUNICIPALITY warrants and represents to COMPANY each of the
following:

                  1. The execution and delivery of this  Agreement has been duly
authorized by all appropriate actions of MUNICIPALITY'S governing body, and this
Agreement  constitutes the legal, valid and binding  obligations of MUNICIPALITY
enforceable  in  accordance  with its terms  (except  as  enforceability  may be
limited by applicable  bankruptcy or similar laws affecting  creditors'  rights,
and by application of equitable principles if equitable remedies are sought).

                  2. To the  best  of its  knowledge,  there  is no  pending  or
threatened litigation or governmental proceedings which would affect its ability
to perform its obligations under this Agreement.

                  3. MUNICIPALITY shall provide to COMPANY (and if COMPANY
requests, to any financial institution providing financing for the Facility or
credit


                                      -14-
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support for any  refinancing of the Facility) an opinion of its legal counsel to
the effect of Paragraphs 1 through 2.

            ARTICLE III. OPERATION OF THE FACILITY

            A. COMPANY shall, except as otherwise expressly provided for herein:

                  1.  Either  operate  and  maintain  the  Facility  so as to be
capable of receiving  and  combusting  Acceptable  Waste in quantities up to the
aggregate  Guaranteed  Plant Capacity  Shares of all Charter  Municipalities  or
arrange for the disposal of such Acceptable  Waste in the manner provided herein
for  By-Pass  Waste;  provided,  however,  that  COMPANY  shall  in no  event be
obligated to accept or process Unacceptable Waste; and

                  2. Require any operator of the Facility (including COMPANY, if
applicable)  to operate the Facility in accordance  with  standards that are not
lower than the General Duties (as that term is defined in the current Operations
and Maintenance Agreement between COMPANY and ESOCO Orrington, Inc.).

            B. COMPANY shall use reasonable  efforts to maintain the Facility in
a  manner  which  will  minimize  any  adverse  impact  upon  residents  of  the
surrounding area, including the following:

                  1. all waste and waste by products shall be screened from
public view by natural buffers or man-made barriers;

                  2. vehicular access to the Facility shall be restricted during
non-Delivery Hours;

                  3. the premises of the Facility, except for storage areas,
shall be kept reasonably free of litter and other debris other than in its
designated location; and

                  4. roads on the premises of the Facility shall be kept in good
order and repair.

            C. COMPANY  shall  accept  Acceptable  Waste at the Facility  during
Delivery Hours only,  except that if in the event of a natural disaster or other
emergency  condition,  MUNICIPALITY  requests COMPANY to accept Acceptable Waste
outside of Delivery Hours,


                                      -15-
   16

COMPANY shall make a reasonable  effort to  accommodate  MUNICIPALITY's  request
provided  MUNICIPALITY  agrees to pay any  additional  expenses that COMPANY may
incur in accommodating  such request.  If COMPANY determines that it is not able
to accommodate such request, its determination shall be final. In case of such a
determination,  COMPANY will make a reasonable  effort to locate an  alternative
disposal or storage site for such Acceptable Waste.

            D. The marketing of energy  products and  materials  produced by the
Facility, including the pricing thereof, shall be sole and exclusive prerogative
of  COMPANY  and  COMPANY,  except  as  otherwise  set  forth  herein  shall  be
exclusively  entitled to any benefits  derived from the sale of any materials it
may recover from Acceptable Waste.

            E. COMPANY  shall be  responsible  at its cost for  disposing of all
Residue  generated  by the  Facility  and all By-Pass  Waste except as otherwise
provided  for in this  Agreement  but  MUNICIPALITY  shall  bear  all  costs  of
delivering  waste to the  Facility,  including  the costs of operating  transfer
stations and all costs of removing any  significant  quantities of  Unacceptable
Waste delivered to the Facility by MUNICIPALITY or its agents.

            ARTICLE IV. WEIGHING

            A. Except as otherwise  provided  herein,  COMPANY shall operate and
maintain  for use by  MUNICIPALITY,  a  container  and/or  motor truck scale (or
scales)  to weigh all  vehicles  of up to sixty  (60) feet in length  delivering
Acceptable Waste to the Facility for disposal. COMPANY shall provide for regular
inspections  of  the  scale(s)  by  the   appropriate   public   officials  with
responsibility  for certifying  weights and measures to ensure their  reasonable
accuracy,  such  inspection to be conducted not less than annually,  and at such
other times as MUNICIPALITY at its expense deems  necessary.  COMPANY shall have
available a backup scale for use when installed scales are inoperative.

            B. Deliveries by MUNICIPALITY shall be recorded separately. COMPANY
and MUNICIPALITY shall jointly establish reasonable procedures to ensure proper
vehicle identification and weighing of loads. Unless otherwise agreed, each
incoming and


                                      -16-
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outgoing  waste  vehicle  shall be weighed with gross  weight,  time,  and truck
identification indicated on a weigh record.  MUNICIPALITY,  COMPANY and operator
of each weighed  vehicle shall  receive a copy of the weigh  ticket.  Each weigh
ticket shall include at least the following information:

            * Date and Time

            * Hauler Code

            * Vehicle I.D. number

            * Tons delivered (to nearest hundredth of a ton)

COMPANY  shall retain all weigh  tickets for a period of not less than one year.
The weigh records shall be used by COMPANY and  MUNICIPALITY  as a basis for the
calculations   required   herein  and  shall  be  verified  at  least  annually.
MUNICIPALITY  shall have the right to inspect  COMPANY's  weigh  records upon 24
hours prior written notice.  Such inspections shall be conducted during business
hours  in  such  a  manner  as  to  not  unreasonably  interfere  with  Facility
operations.

            C. If all weighing  facilities are  inoperative or are being tested,
COMPANY  shall  estimate the  quantity of waste  delivered on the basis of truck
volumes and estimated data obtained through historical  information pertinent to
MUNICIPALITY.  These estimates  shall take the place of actual weighing  records
during the scale outage.

            D. In the event  Acceptable  Waste is directed  to another  facility
under the  provisions  of this  Agreement,  the  weight  records of the place of
disposal,  absent  manifest  error,  shall be used to  determine  the tonnage of
Acceptable Waste for purposes of this Agreement.

            E. COMPANY agrees to notify  MUNICIPALITY  and the Municipal  Review
Committee of the amount of recycled waste  delivered to the Facility that can be
credited  toward its recycling goals for the purpose of compliance and reporting
under the Maine  Comprehensive  Solid  Waste Act and to  provide  the  Municipal
Review  Committee  on an annual  basis  the  aggregate  amount of such  credited
recycled  waste,  to the  extent  allowed  by the State  Planning  Office or any
successor.


                                      -17-
   18

            ARTICLE V. DELIVERY OF WASTE TO COMPANY

            A.  MUNICIPALITY  will use its best efforts to cause to be delivered
to the Facility in self  discharging  equipment of the general type specified in
Schedule G the Acceptable Waste collected by it and other Acceptable Waste under
its control up to its Guaranteed  Plant Capacity Share and will adopt reasonable
measures to prevent the disposal of Unacceptable Waste at the Facility.

            B. MUNICIPALITY shall use its best efforts to cause to be delivered
to the Facility the Acceptable Waste per operating month as shown on Schedule A.

            C. COMPANY agrees that  MUNICIPALITY may at its option,  at any time
or from time to time during the term of this  Agreement,  if MUNICIPALITY is not
then in default  hereunder,  increase its  Guaranteed  Annual Tonnage (and, as a
consequence,  its Guaranteed  Plant  Capacity  Share) upon giving written notice
thereof  to  COMPANY;  provided,  however,  that  MUNICIPALITY  may not,  by the
exercise of the option  granted in this  paragraph C,  increase  its  Guaranteed
Annual  Tonnage  to more  than  125%  of its  Reference  GAT.  The  increase  in
Guaranteed  Annual  Tonnage  shall  take  effect as of  January 1 of the  second
calendar year  following the calendar  year in which  COMPANY  receives  written
notice from MUNICIPALITY of the increase.

            D.  COMPANY  agrees that the Charter  Municipalities  may pool their
rights to increase their  Guaranteed  Annual  Tonnage under  paragraph C of this
Article V or similar provisions of other waste disposal  agreements with COMPANY
(substantially  similar to the Outstanding Agreement or this Agreement) so as to
permit any Charter  Municipality,  if it is not then in default  under its waste
disposal  agreement with COMPANY and subject to the prior written consent of the
Municipal  Review  Committee  delivered to COMPANY,  to increase its  Guaranteed
Annual  Tonnage to more than 125% of its Reference GAT then in effect;  subject,
however, to the following  conditions,  which are hereby consented and agreed to
by MUNICIPALITY and the Municipal Review Committee:


                                      -18-
   19

                  1. Following such increase, the aggregate Guaranteed Annual
            Tonnages of all Charter Municipalities shall not exceed 225,000
            tons;

                  2.  In  the  event  of  any  such  pooling,  the  right  of an
            individual  Charter  Municipality to increase its Guaranteed  Annual
            Tonnage by 125% of its Reference GAT then in effect shall be limited
            to the extent  necessary  to assure  that the  aggregate  Guaranteed
            Annual  Tonnages  of all  Charter  Municipalities  does  not  exceed
            225,000 tons, with any conflicts among Charter  Municipalities as to
            the  allocation  among  them  of  any  necessary  limitations  to be
            resolved by the Municipal Review Committee;

                  3.  Following  any such  increase and on or before  January 1,
            2003,  the  Guaranteed   Annual  Tonnage  of  all  Amending  Charter
            Municipalities  in the  aggregate  shall not be less than 51% of the
            Guaranteed  Annual  Tonnage  of all  Charter  Municipalities  in the
            aggregate; and

                  4.  The  right  of  the  Charter   Municipalities,   including
            MUNICIPALITY,  to increase its Guaranteed  Annual Tonnage under this
            paragraph D and  COMPANY's  obligation to accept  increased  tons of
            waste  shall at all times be  governed  by and  subject to the waste
            processing capacity of the Facility from time to time.

The increase in Guaranteed  Annual  Tonnage shall take effect as of January 1 of
the second  calendar year following the calendar year in which COMPANY  receives
written notice from the Municipal Review Committee of the increase.

            E.  MUNICIPALITY may at any time and from time to time, if it is not
then in  default  hereunder,  and  with the  approval  of the  Municipal  Review
Committee,  decrease its  Guaranteed  Annual Tonnage (and its Reference GAT) for
purposes of this Agreement if one or more other Amending Charter  Municipalities
increase their Guaranteed Annual Tonnages (and their Reference GATs) by the same
aggregate   amount  under  their  waste   disposal   agreements   with  COMPANY.
Correspondingly, MUNICIPALITY may increase its Guaranteed Annual Tonnage


                                      -19-
   20

hereunder (and its Reference GAT) by agreeing to increase its Guaranteed  Annual
Tonnage  in  response  in whole or in part to a  corresponding  decrease  in the
Guaranteed  Annual  Tonnage (and  Reference  GAT) of one or more other  Amending
Charter  Municipalities  under their waste disposal agreements with COMPANY. Any
such  decreases and increases in Guaranteed  Annual  Tonnage (and Reference GAT)
shall be effected by  delivery to COMPANY of written  notice from the  Municipal
Review  Committee of the amount of such decreases and increases and the Amending
Charter Municipalities affected thereby. Such decreases and increases shall take
effect as of the January 1 of the  calendar  year next  succeeding  the calendar
year in which such  notice is  received  by  COMPANY  if the notice is  received
before  September  1, or, if such  notice is  received  by  COMPANY  on or after
September 1, as of January 1 of the second succeeding calendar year.

            F.  Following  the  effective  date of increases or decreases in the
Guaranteed  Annual  Tonnage  of  MUNICIPALITY  or  any  other  Amending  Charter
Municipality, as permitted by paragraph E, COMPANY shall promptly amend Schedule
B to this  Agreement to reflect such  increases  and  decreases in the Reference
GATs of the Amending Charter  Municipalities and provide to the Municipal Review
Committee a copy thereof, and thereupon such Schedule B shall be amended for all
purposes  of this  Agreement.  Furthermore,  upon the  addition  of an  Amending
Charter Municipality, COMPANY shall promptly amend Schedule B to this Agreement,
as requested by the  Municipal  Review  Committee,  to reflect such addition and
provide to the Municipal  Review  Committee a copy thereof,  and thereupon  such
Schedule B shall be amended for all purposes of this Agreement.

            G. All Acceptable Waste delivered to the Facility by MUNICIPALITY or
directed to another facility during a Suspension of Operations shall be credited
toward  MUNICIPALITY'S  Guaranteed Annual Tonnage and all Acceptable Waste shall
become the property of COMPANY after it is delivered to the Facility.

            H. For the duration of this Agreement, MUNICIPALITY shall be
obligated to deliver Acceptable Waste to COMPANY equal to its Guaranteed Annual
Tonnage or pay any amounts due under paragraph I of this Article. Only
Acceptable Waste which originates


                                      -20-
   21

from  within  MUNICIPALITY  or,  with the  written  consent  of  COMPANY,  which
MUNICIPALITY  otherwise  causes to be so  delivered,  shall be  delivered to the
Facility by or on behalf of  MUNICIPALITY  and credited  towards its  Guaranteed
Annual  Tonnage.  For purpose of determining  whether  MUNICIPALITY  has met its
Guaranteed  Annual  Tonnage,  no  credit  shall  be given  to  MUNICIPALITY  for
Acceptable  Waste  delivered  to the  Facility  during  the  last  month  of the
Operating  Year in excess of 150% of the normal  monthly  tonnage  specified  in
Schedule A unless such excess  Acceptable  Waste is  actually  processed  by the
Facility.

            I. On an Operating Year basis, if the aggregate amount of Acceptable
Waste credited during the Operating Year to all of the Charter Municipalities is
less than the aggregate Guaranteed Annual Tonnage of all Charter  Municipalities
(for reasons  other than Force  Majeure or  Termination  of  Operations),  those
municipalities  which did not meet their Guaranteed  Annual Tonnage  requirement
shall make a payment,  as described below,  based on their pro-rata share of the
shortfall in tonnage. The payment shall be calculated as follows: municipality's
pro-rata  share  of  an  additional  fee  for  the  shortfall  computed  by  (i)
multiplying  the  aggregate  shortfall  in  tonnage  by  the  Tipping  Fees  (as
determined  by taking the  average  Tipping Fee in effect  during the  Operating
Year)  which the  Charter  Municipalities  would  have paid to  COMPANY  had the
Guaranteed Annual Tonnage of all Charter Municipalities been credited during the
Operating  Year in  question,  and  adding  (ii)  COMPANY's  cost of  purchasing
Supplemental  Fuel equal in BTU value to the shortfall using the actual measured
BTU value per pound of Acceptable  Waste over such Operating  Year. This payment
shall  be  made  not  later  than  the  March  1  or  thirty   (30)  days  after
reconciliation  pursuant  to  Paragraph  F of  Schedule  C  next  following  the
Operating  Year in  which  such  shortfall  in  aggregate  Charter  Municipality
Guaranteed Annual tonnage was not delivered.

            ARTICLE VI. DETERMINATION OF TIPPING FEE

            A. Tipping Fees. From and after April 1, 1991, MUNICIPALITY shall
pay COMPANY a Tipping Fee calculated and adjusted as provided on Schedule C
attached hereto. The Tipping Fee payable to COMPANY shall be calculated by
multiplying the Tipping


                                      -21-
   22

Fee in effect during the period of deliveries of Acceptable Waste, by the number
of tons of Acceptable Waste that MUNICIPALITY caused to be delivered to Facility
or caused to be delivered to another waste facility at the direction of COMPANY,
which tonnage is based on weight  records  referred to in Article IV hereof,  as
tallied  and  formulated  into  invoices  on a monthly  basis and  submitted  to
MUNICIPALITY by COMPANY.

            B.  Invoices;  Payment.  Payment of the Tipping  Fees (and any other
amounts listed on the invoices) shall be made by MUNICIPALITY within thirty (30)
days of its receipt of said  invoices.  Any late payments shall bear interest at
lesser of 1.5% per month or the rate of interest  announced by Bank of Boston or
its successor as its prime or base rate of interest, adjusted daily, plus 2% per
annum.

            C.  Components of Tipping Fee. The two components of the Tipping Fee
shall be first the Base Rate as defined on Schedule C, and second,  the Variable
Rate as defined on Schedule C attached  hereto.  The Base Rate shall be adjusted
(up or down) on the first day of each January commencing with January 1, 1992 by
a  percentage  equal to the  annual  percentage  change  in the  CPI-U as of the
immediately preceding September from that of the September of the prior year and
the Variable Rate shall be adjusted (up or down)  quarterly  commencing  July 1,
1991 as set forth on  Schedule  C. The  Tipping  Fee to be paid by  MUNICIPALITY
shall be adjusted in accordance with the terms of Schedule C attached hereto.

            D. The provisions of this  Agreement  relating to payment of Tipping
Fees,  Guaranteed Annual Tonnage and other  requirements which are based upon an
Operating  Year basis shall be modified  to reflect the  percentage  of the year
during which the  Facility  operates or the  percentage  of the year after which
MUNICIPALITY  begins  delivery  or  the  percentage  of  the  year  prior  to  a
termination.  For this purpose,  all Operating Year  requirements to be adjusted
shall be  multiplied  by a  fraction,  the  numerator  of which is the number of
months  during which the Facility  has  operated and  fractions  thereof and the
denominator of which is twelve (12).


                                      -22-
   23

            E. COMPANY may add a surcharge on the Tipping Fee imposed by COMPANY
for  delivery  and  acceptance  of  Specially  Permitted  Waste by  MUNICIPALITY
provided  that such  surcharge  shall not exceed an amount  necessary  to offset
COMPANY's  incremental  costs  of  handling  and  disposing  of  such  Specially
Permitted  Waste,  and,  if  applicable,  the lower BTU value of such  Specially
Permitted Waste.

            ARTICLE VII. CAPITAL AND MAINTENANCE RESERVE ACCOUNT

            A. COMPANY has  established  and shall fund an account  entitled the
Capital and Maintenance Reserve Account ("CMRA"). All amounts funded at any time
by COMPANY in the CMRA shall be held by Fleet Bank or its successor  pursuant to
a Custodial Agreement, dated on or about June 13, 1991, and shall be used solely
for  Capital or  Maintenance  Expenditures  as defined  in  paragraph  G of this
Article.  MUNICIPALITY and the other Charter Municipalities shall be entitled to
a  first  possessory  priority  lien  on  amounts  in the  CMRA  to  secure  the
performance by COMPANY of its obligations to MUNICIPALITY and the other Amending
Charter Municipalities pursuant to this Agreement and similar agreements and the
other Charter  Municipalities  pursuant to their respective Charter Municipality
agreements;  provided,  however, that no entity (including,  without limitation,
MUNICIPALITY)  other than the Municipal  Review  Committee  shall be entitled to
enforce such lien on behalf of Charter  Municipalities  or to effect any set-off
against amounts held in such Account.

            B. There shall be paid into the CMRA during each Operating Year from
payment  of  the  Tipping   Fees  paid  by   MUNICIPALITY   and  other   Charter
Municipalities  an amount equal to the Monthly  Reserve  Fund  Amount,  which is
defined and computed pursuant to paragraph C of this Article.

            C. The Monthly Reserve Fund Amount shall be calculated as follows:

                  (i) for  each  Operating  Year  commencing  April 1,  1991,  a
deposit of  $116,667  per month (or a  fraction  thereof  as  described  below),
adjusted up or down as of the first day of each Operating Year  commencing on or
after January 1, 1992 by a percentage equal to the


                                      -23-
   24

percentage  change in the CPI-U for  September 30 of the  immediately  preceding
Operating  Year as compared to the CPI-U for April  1991.  (Until the  aggregate
Guaranteed  Annual Tonnage of MUNICIPALITY and all other Charter  Municipalities
("Charter  Tonnage")  reaches 216,480 tons per year, the deposit of $116,667 per
month,  as  adjusted,  shall be  reduced  to an  amount  that is  determined  by
multiplying  $116,667  by a  fraction,  the  numerator  of which is the  Charter
Tonnage and the denominator of which is 216,480 tons); and

                  (ii) in the event that in the judgment of COMPANY,  consistent
with  paragraph H, the amount in the CMRA at the end of any Operating  Year will
exceed $5 million,  COMPANY will, as of the  beginning of such  Operating  Year,
reduce the Base Rate  portion of the Tipping Fee for that  Operating  Year by an
aggregate  amount equal to the amount of such excess.  Such Base Rate  reduction
will be calculated on a per ton of Acceptable Waste basis based on the aggregate
Guaranteed  Annual  Tonnage of all  Charter  Municipalities  applicable  to such
Operating  Year.  COMPANY shall also reduce the Monthly  Reserve Fund Amount for
such Operating Year by an amount equal to the amount of such excess,  divided by
twelve (12).

            D. The  failure  of  COMPANY  to deposit in any year or month in the
CMRA any amounts required to be deposited therein by it by reason of the failure
of MUNICIPALITY or any Charter Municipality to pay any amounts due COMPANY shall
not constitute a default by COMPANY of any of its obligations under this Article
VII.

            E. All monies in the CMRA shall be invested and  reinvested  in such
obligations  issued  or  guaranteed  by the  United  States  of  America  as the
Custodian shall determine.  The Custodian shall not be liable or responsible for
any  depreciation  of the value of any investment made by it. Interest earned or
accrued on any monies or  investments  in the CMRA shall be held in and credited
to the CMRA for the purposes thereof.

            F. COMPANY shall be entitled to withdraw from the CMRA those amounts
determined by it at the time of such withdrawal,  to pay, or to reimburse itself
for,  any  Capital or  Maintenance  Expenditures  paid or  incurred by it in the
Operating  Year in which such Capital or Maintenance  Expenditure is made.  When
COMPANY withdraws funds from the


                                      -24-
   25

CMRA, it shall furnish a statement to the Municipal Review Committee  certifying
that the funds withdrawn are for Capital or Maintenance Expenditures,  including
a description of the  expenditure  and  substantiation  of the costs. If COMPANY
withdraws funds from the CMRA due to an event covered by an insurance  policy or
subject to a warranty or third party claim,  COMPANY will use good faith efforts
to recover any amounts owed, and deposit into the CMRA any insurance proceeds it
recovers or damages it collects,  minus reasonable  expenses incurred (including
any attorneys fees) by COMPANY.

            G. "Capital or Maintenance Expenditures" shall consist only of those
costs,  fees,  expenses  and  liabilities  paid by or incurred by COMPANY in the
construction,  acquisition, operation or maintenance of the Facility for Capital
or  Maintenance  Expenditures.  Capital or  Maintenance  Expenditures  shall not
include such costs, fees,  expenses and liabilities paid or incurred as a result
of  a  Change-in-Law  which  are  included  in  the  full  amount  thereof  as a
Change-in-Law  cost for  purposes  of  computing  the  Variable  Rate.  "Capital
Expenditures"  means only those amounts  recorded in accordance  with  Generally
Accepted Accounting  Principles ("GAAP") in respect of any period by COMPANY for
the  purchase  or  acquisition  for  value of fixed or  capital  assets  for the
Facility.  "Maintenance  Expenditures"  means all  expenditures  for  repairs or
modifications to existing  equipment  whether or not due to normal wear and tear
to the Facility or maintenance work performed spontaneously during the operation
of the Facility,  in excess of $20,000  individually  for any one item or in the
aggregate for any series of related items.  Maintenance  Expenditures  shall not
include items  included as "Scheduled  Maintenance"  on COMPANY's  annual budget
which  includes  quarterly  boiler  grate  cleaning  and  annual  minor  turbine
inspections.

            H. As part of the  annual  budget  to be  prepared  by  COMPANY  and
submitted to the Municipal Review  Committee,  COMPANY will show projected uses,
to the extent then known, of the CMRA for the next Operating Year.

            I. If as of May 10, August 10, November 10 or February 10, the
cumulative amounts of money deposited in the CMRA in the first quarter, second
quarter, third


                                      -25-
   26

quarter or fourth quarter, respectively, of any Operating Year are less than the
cumulative  amounts of money that should have been deposited in the CMRA in said
quarter  ("Cumulative CMRA  Shortfall"),  and if COMPANY within twenty (20) days
next following either May 10, August 10, November 10 or February 10, as the case
may be, does not fund the Cumulative CMRA Shortfall, then Charter Municipalities
may withhold from their future monthly  Tipping Fee payments an amount up to the
Cumulative CMRA Shortfall.  The Municipal  Review  Committee shall determine the
amount to be  withheld by each  Charter  Municipality,  including  MUNICIPALITY,
which  amount  along  with  that  portion  of  the  then  current   Tipping  Fee
attributable  to  MUNICIPALITY's  contribution  to the CMRA (the  "CMRA  Account
Payment") as determined by the Municipal  Review  Committee shall be paid to the
Municipal Review  Committee to be held in escrow.  The CMRA Account Payments may
be  withheld in escrow only to the extent and only as long as any portion of the
Cumulative CMRA shortfall  remains.  Once the Cumulative CMRA Shortfall has been
paid into the CMRA account,  the Municipal Review Committee shall within two (2)
days release the CMRA  Account  Payments in escrow to COMPANY for deposit in the
CMRA; provided,  however, if COMPANY cures any shortfalls to the extent that the
release of any money from  escrow  would  bring the amount  current,  said money
shall be released.

            J. If pursuant to Article  VIII(C),  this  Agreement  is  terminated
prior to March  31,  2018,  the  balance  (if any) in the CMRA as of the date of
termination  shall be distributed to COMPANY and MUNICIPALITY (and other Charter
Municipalities  whose agreements will similarly be terminated) as follows: a pro
rata share,  based on the proportion of COMPANY's  contributions  to CMRA to the
Charter Municipalities'  contributions to the CMRA, with COMPANY's proportionate
share to be paid to COMPANY and the Charter  Municipalities' share to be divided
among  the  Charter   Municipalities  as  determined  by  the  Municipal  Review
Committee.

            K. Notwithstanding any provision of this Agreement to the contrary,
a pro rata share, based on the proportion of the Reference GAT of MUNICIPALITY
to the


                                      -26-
   27

aggregate Reference GATs for all Charter Municipalities, of the balance (if any)
remaining in the CMRA shall be paid to MUNICIPALITY if this Agreement is in full
force and  effect  on March 31,  2018 and  MUNICIPALITY  is not then in  default
hereunder.  COMPANY shall be entitled to all amounts that  otherwise  would have
been  allocable to Charter  Municipalities  which  terminated  their  respective
agreements effective prior to March 31, 2018.

            ARTICLE VIII. TERM OF AGREEMENT; TERMINATION

            A.  The  term of  this  Agreement,  as it  extends  the  term of the
Outstanding  Agreement (which began on April 1, 1991), shall be from the Closing
Date through March 31, 2018, unless earlier terminated as herein provided.

            B. [Intentionally Reserved]

            C. If as a result of a  termination  notice or notices  received  by
COMPANY   from   Charter   Municipalities   that   are  not   Amending   Charter
Municipalities,  the  aggregate  Guaranteed  Annual  Tonnage  of  nonterminating
Charter  Municipalities  (based upon Guaranteed  Annual Tonnage in effect at the
time of  giving  of such  notice(s)),  together  with the  tonnage  of all other
municipalities  delivering waste under long-term waste disposal  agreements with
COMPANY,  will  fall  below  155,000  tons  after  the  effective  date  of such
termination,  COMPANY may elect to  terminate  all of the  Charter  Municipality
agreements,  including this Agreement.  If COMPANY makes this election, all then
effective  Charter  Municipality  agreements shall terminate on either March 31,
2000,  March 31, 2002,  or March 31,  2004,  as the case may be,  unless  before
either March 31, 2000,  March 31, 2002,  or March 31, 2004,  as the case may be,
the  non-terminating  Charter  Municipalities  exercise any one of the following
options.

            COMPANY shall promptly provide to the Municipal Review Committee
copies of termination notices from Charter Municipalities that are not Amending
Charter Municipalities and a statement as to the amount of the Charter
Municipality aggregate Guaranteed Annual Tonnage capacity (if any) made
available as a result of the notices and the amount of the shortfall below
155,000 tons created as a result of each such notice. The Municipal Review


                                      -27-
   28

Committee  will have one  hundred and twenty  (120) days to  exercise  either an
option  (1) to arrange  for a  reallocation  of the  Guaranteed  Annual  Tonnage
capacity  created as a result of the  notices or (2) to arrange  for  Guaranteed
Annual Tonnage under a substitute waste disposal  agreement  containing the same
terms as this Agreement.  If the Municipal Review  Committee  exercises all or a
portion of the first option, it shall notify COMPANY and Charter  Municipalities
as to which  Charter  Municipalities  the  capacity  shall be  allocated,  to be
effective on the effective date of the applicable termination and said notice(s)
shall constitute an increase to that  Municipality's  Guaranteed Annual Tonnage;
provided, however, no such reallocation on or before January 1, 2003 shall cause
the aggregate  Guaranteed Annual Tonnage of all Amending Charter  Municipalities
to be less than 51% of the aggregate  Guaranteed  Annual  Tonnage of all Charter
Municipalities.  If the Municipal Review Committee exercises all or a portion of
the second option,  then the  municipality  entering into the  substitute  waste
disposal  agreement shall be an Amending Charter  Municipality and the effective
date of its agreement  shall be the same as the effective date of the applicable
termination;  provided,  however,  that such Amending Charter Municipality shall
not have rights of  Amending  Charter  Municipalities  to receive  warrants  for
shares  of  common  stock of Bangor  Hydro,  as  contemplated  by  Article  XII,
paragraph  E, or to  purchase  limited  partnership  interests  in  COMPANY,  as
contemplated  by Article XIX.  COMPANY will cooperate with the Municipal  Review
Committee in its efforts to obtain  replacement  tonnage.  The Municipal  Review
Committee can only obtain  replacement  tonnage in order to meet the 155,000 ton
minimum or such  greater  amount of  Guaranteed  Annual  Tonnage as COMPANY  may
approve in writing. If as a result of the exercise of this option, the aggregate
Guaranteed Annual Tonnage of the remaining Charter Municipalities, together with
the tonnage of all other  municipalities  delivering waste under long-term waste
disposal  agreements  with  COMPANY,  meets or  exceeds  155,000  tons as of the
effective date of the termination  notices,  COMPANY shall not have the right to
terminate the remaining Charter Municipality agreements under this paragraph C.


                                      -28-
   29

            Notwithstanding the immediately  preceding paragraph,  COMPANY shall
not have the right to terminate the remaining Charter  Municipality  agreements,
including this  Agreement,  under this  paragraph C if (i) the Municipal  Review
Committee  causes to be paid to COMPANY  the full  amount of  Tipping  Fees that
would otherwise have been payable under the Charter Municipality  agreements and
in the same manner as the put-pay obligations are paid in this Agreement,  as if
the  aggregate   Guaranteed  Annual  Tonnage  under  such  Charter  Municipality
agreements were 155,000 tons, and (ii) the aggregate  Guaranteed  Annual Tonnage
under  all  Charter  Municipality  agreements  then in  effect  is not less than
140,000 tons.

            In  consideration  of the  option  granted to the  Municipal  Review
Committee in this  paragraph C, the Municipal  Review  Committee  agrees that it
shall  continue to consent to COMPANY  entering into  long-term  waste  disposal
agreements on terms  substantially  similar to those contained in this Agreement
with any municipality other than the City of Ellsworth and the Towns of Newport,
Pittsfield, Detroit, Monroe, Prospect, Winterport and Frankfort, Maine, to which
the Municipal Review Committee has otherwise  consented until a total of 180,000
tons of Guaranteed Annual Tonnage has been achieved and, thereafter, in order to
maintain at least 180,000 tons of Guaranteed Annual Tonnage.  The option granted
to the Municipal Review Committee in this paragraph C is further  conditioned on
and shall remain  effective only so long as no Charter  Municipality has filed a
civil action or initiated an arbitration  proceeding against COMPANY alleging or
based  upon an  infirmity  in the  Municipal  Review  Committee's  consent  or a
violation or breach of Article  XXXIII of this  Agreement  or the other  Charter
Municipality agreements;  provided that COMPANY may waive this limitation on the
effectiveness of such amendments.

            D. [Intentionally reserved]

            E. No termination of this Agreement  shall relieve  MUNICIPALITY  of
its  obligation  to make any  Tipping  Fee  payments  (including  any  remaining
balances of  Change-in-Law  costs as set forth in Schedule C) or either party of
any indemnity or payment  obligations with respect to waste delivered or matters
occurring on or before the effective date of termination


                                      -29-
   30

hereunder, and upon termination, MUNICIPALITY and COMPANY shall execute a mutual
release of the other with only such exceptions specified in this paragraph E.

            ARTICLE IX. UNACCEPTABLE AND HAZARDOUS WASTE

            Unacceptable Waste shall be handled in the following manner:

            A. COMPANY's  weigh station  operator shall have authority to reject
all loads of waste  delivered  to the Facility on behalf of  MUNICIPALITY  which
have significant  amounts of Unacceptable  Waste. The determination of the weigh
station  operator  or other agent of  COMPANY,  if made in good faith,  shall be
binding on MUNICIPALITY.  COMPANY shall  immediately  notify the MUNICIPALITY of
any rejected  loads and shall provide to it  particulars  about the hauler,  the
reason for rejection and the  information  on the weight ticket  provided for by
Article IV hereof, for that rejected load. MUNICIPALITY shall notify all haulers
delivering waste on its behalf of what constitutes Unacceptable Waste.

            B. Subject to the  provisions  of  paragraph  A,  COMPANY  shall not
knowingly  permit any delivery by any person at the Facility of Hazardous  Waste
or  Unacceptable   Waste.   COMPANY  shall  exercise   reasonable  care  in  the
identification  and  extraction  from the waste  stream of  Hazardous  Waste and
Unacceptable  Waste  received at the  Facility.  If the  probable  source of the
Hazardous  Waste  or  Unacceptable  Waste  can be  identified  as  MUNICIPALITY,
MUNICIPALITY  shall  either  immediately  remove such waste from the Facility or
reimburse COMPANY for all costs incurred by the COMPANY in the required clean-up
of such waste.

            ARTICLE X. SUSPENSION OF OPERATIONS

            A. If a Suspension of  Operations  occurs,  COMPANY  shall  promptly
advise MUNICIPALITY of such occurrence,  its effect on the ability of COMPANY to
accept  Acceptable  Waste from  MUNICIPALITY  at the  Facility  and its probable
duration.  During a Suspension of Operations  COMPANY shall, in consideration of
the  Tipping  Fee,  provide  for  and pay for  the  disposal  of  MUNICIPALITY's
Acceptable  Waste and other Charter  Municipalities'  Acceptable Waste up to the
aggregate Guaranteed Plant Capacity Share of the Charter


                                      -30-
   31

Municipalities.  COMPANY shall use its best efforts to resume normal  operations
at the Facility at the earliest  practicable  time. So long as COMPANY meets its
obligations hereunder it shall not be deemed in default of this Agreement.

            B.  During  a  Suspension   of   Operations,   COMPANY  may  require
MUNICIPALITY  to deliver its Acceptable  Waste to an alternative  waste disposal
facility.  COMPANY  shall use its best  efforts to arrange for said  alternative
waste  facility in close  proximity to the Facility with due regard for costs of
each of the parties.  COMPANY  shall pay any  incremental  transportation  costs
incurred by MUNICIPALITY or its members as a result of delivering  By-Pass Waste
to such alternative waste disposal facility,  but only if such alternative waste
disposal  facility is located a distance  greater  than 10 miles radius from the
intersection  of Union and Main  Streets in Bangor.  MUNICIPALITY'S  incremental
transportation  costs shall include a reasonable mileage allowance for vehicular
use, added labor costs,  and, if applicable,  any  additional  storage  capacity
required  by  MUNICIPALITY  as the result of a  decrease  in the number of waste
deliveries that can be made in a given day due to an increase in distance.

            C. COMPANY may periodically  suspend  operations for maintenance and
repair purposes and shall use its best efforts to schedule such  maintenance and
repairs at periods  when  delivery  of a low  quantity  of  Acceptable  Waste is
anticipated and at periods of any energy  purchaser's  off-peak demand.  COMPANY
shall use its best  efforts  to give  thirty  (30) day prior  written  notice to
MUNICIPALITY  of a scheduled  Suspension of Operations,  indicating the expected
time, duration and nature of such Suspension of Operations.

            ARTICLE XI. DAMAGE OR DESTRUCTION

            If the Facility or any substantial  portion thereof is so damaged or
destroyed  by fire,  the elements or other  casualty  that it is not feasible to
restore,  repair or reconstruct the Facility,  a Termination of Operations shall
be deemed to have occurred and this Agreement shall be automatically  terminated
as of the date of such occurrence  without any further  liability on the part of
any party  except  for  accrued  and unpaid  Tipping  Fees  including  remaining
balances  of  Change-in-Law  costs  as set  forth in  Schedule  C,  payments  to
reimburse COMPANY for expenses


                                      -31-
   32

incurred or paid by it to dispose of Unacceptable  Waste and Performance  Credit
amounts accrued or earned but unpaid.

            ARTICLE XII. MUNICIPAL REVIEW COMMITTEE

            A. In order to facilitate  review of Facility  operations and of the
performance  and the  interfacing of the numerous  Charter  Municipalities  with
COMPANY  and  Bangor  Hydro  during  the  life of this  Agreement,  the  Charter
Municipalities   have  formed  the  Municipal   Review  Committee  to  serve  as
representative  for the Charter  Municipalities.  The Municipal Review Committee
has established bylaws to govern its activities.

            B. The  functions of the  Municipal  Review  Committee,  in general,
shall  encompass  review  of  COMPANY's  financial  operating   information  and
monitoring of COMPANY  expenses,  Tipping Fee adjustments  and of  Change-in-Law
costs.  COMPANY  shall  provide  monthly and  annually to the  Municipal  Review
Committee operation and performance reports of the Facility.

            C.  COMPANY  will  notify  the  Municipal  Review  Committee  of any
material  adverse  change or  potential  change in the  financial  condition  of
COMPANY  which in its opinion  could  result in a cessation of  operations.  Any
notice of material  adverse changes under this paragraph shall be signed by each
of  COMPANY'S  general  partners and shall  include,  but not be limited to, the
following circumstances:

            a.    receipt by COMPANY from its lenders of a written notice that
                  an event of default has occurred and is continuing and that
                  such lenders intend to foreclose on the Facility or to take
                  possession thereof;

            b.    the occurrence of any material adverse change, claim or action
                  with  respect to COMPANY  which in its  opinion  would  likely
                  result in the Facility no longer  remaining in the business of
                  being a municipal solid waste disposal facility; or

            c.    a decision by COMPANY to cause the Facility no longer to
                  remain in the business of being a municipal solid waste
                  disposal facility.


                                      -32-
   33

COMPANY  acknowledges its obligation of good faith in the giving of such notices
to the Municipal Review Committee.

            The Municipal Review Committee will have up to ninety (90) days from
COMPANY's notice in which to evaluate the  circumstances and to propose whatever
remedial  action it deems  necessary.  COMPANY  will have up to thirty (30) days
thereafter to provide a response to the Municipal Review  Committee's  proposal,
after which each party  agrees to consider  the  proposals  of the other in good
faith  for a period of up to sixty  (60)  days  before  taking  action(s).  Upon
delivery of any such notice by COMPANY,  the Municipal Review Committee may also
exercise the rights granted in Article XVI hereof.

            D. In conjunction  with the execution and delivery of this Agreement
and pursuant to a Warrant to Purchase  Common Stock,  dated as of  ____________,
1998 (the "Warrant Agreement"),  Bangor Hydro has issued to the Municipal Review
Committee  on  behalf  of  the  Amending   Charter   Municipalities,   including
MUNICIPALITY,  in care and custody of Bangor Savings Bank or another institution
designated by the Municipal Review Committee,  as custodian,  warrants entitling
the holders to acquire one million  shares of common stock of Bangor Hydro.  The
warrants are exercisable as provided in the Warrant Agreement. The warrants will
be held in the custody of Bangor Savings Bank pursuant to a custodial agreement,
of even  date  herewith.  MUNICIPALITY  hereby  irrevocably  delegates,  for the
current  year and, to the extent  permitted  by law, for each future year during
the term of the Warrant  Agreement,  to the Municipal Review  Committee,  as its
agent, sole discretion to exercise or direct the sale of the warrants as further
provided in the MRC  Administration  Authorization  and the custodial  agreement
with Bangor  Savings Bank. The Municipal  Review  Committee has agreed to advise
the Amending Charter  Municipalities  regarding the exercise of the warrants and
to distribute proceeds thereof to the Amending Charter Municipalities,  based on
their respective ownership interests in the warrants.  MUNICIPALITY acknowledges
and agrees that COMPANY has no responsibility or duty whatsoever to MUNICIPALITY
or the  Municipal  Review  Committee  in respect of the warrants or the exercise
thereof.


                                      -33-
   34

            E.  Under  Article  XIX  hereof,  Amending  Charter  Municipalities,
including MUNICIPALITY, are granted the option to participate in the purchase of
limited  partnership  interests in COMPANY and to designate  all or a portion of
the Performance  Credits to be used to pay the purchase price of such interests.
The Municipal  Review Committee shall administer and advise the Amending Charter
Municipalities  regarding the exercise of the option to participate  therein and
whether  to  purchase  such  interests  as  provided  in the MRC  Administration
Authorization.  If MUNICIPALITY  exercises the option to participate as provided
in Article XIX and thus  becomes an Equity  Charter  Municipality,  MUNICIPALITY
hereby  confirms its  irrevocable  authorization  and direction to the Municipal
Review  Committee,  granted  in  the  MRC  Administration  Authorization,   this
Agreement  and the other  agreements  contemplated  by this  Agreement,  for the
current  year and, to the extent  permitted  by law, for each future year during
the term of this  Agreement,  to receive the  Performance  Credits to be paid to
MUNICIPALITY  under  Article  XVIII  and  apply  them  as  provided  in the  MRC
Administration Authorization or in such other manner acceptable to MUNICIPALITY.
MUNICIPALITY  acknowledges and agrees that COMPANY has no responsibility or duty
whatsoever  to  MUNICIPALITY  to advise it as to the  exercise of such option to
participate  in the  purchase of such  limited  partnership  interests or in the
purchase thereof.

            If MUNICIPALITY becomes an Equity Charter Municipality, MUNICIPALITY
hereby  confirms  its  authorization  and  direction  to  the  Municipal  Review
Committee to administer and receive  partnership  distributions  from COMPANY in
the  name  and on  behalf  of  MUNICIPALITY,  as  further  provided  in the  MRC
Administration  Authorization  to be executed by MUNICIPALITY  and the Municipal
Review  Committee as a condition to  exercising  the option to  participate,  as
provided in Article XIX, paragraph C.

            ARTICLE XIII. DEFAULT; LIQUIDATED DAMAGES

            A. Each of the following events shall constitute an "Event of
Default" hereunder:


                                      -34-
   35

                  1. A failure to pay when due and payable any amounts owed one
party to the other and the continuance of such failure for thirty (30) days
after receipt of written notice of nonpayment; or

                  2.  Failure  of  either  party  to  observe  and  perform  any
covenant,  condition  or  agreement  on its  part  required  to be  observed  or
performed by this  Agreement  for a  continuous  period of sixty (60) days after
receipt of written notice from the non-defaulting party, specifying such failure
and  demanding  such failure be  corrected;  provided,  however,  if the failure
stated in the notice cannot be corrected within such period,  the non-defaulting
party will not unreasonably  withhold its consent to an extension of such period
if corrective  action is instituted  within such period and  diligently  pursued
until the default is corrected.

            B.  Whenever  any  Event  of  Default  shall  have  occurred  and be
continuing,  which  Event of  Default  is  substantial  and  concerns a material
provision  of this  Agreement,  the  non-defaulting  party  may  terminate  this
Agreement upon giving thirty (30) days' written notice to the defaulting  party.
This  provision,  however,  is subject to the condition that if, after sending a
notice of termination and prior to the date on which such termination  otherwise
becomes  effective,  the  defaulting  party pays in full any amounts owing under
this  Agreement  or  otherwise  cures  the  Event  of  Default,  the  notice  of
termination  shall be canceled and the parties  shall be restored to their prior
position  under  this  Agreement,  but no such  cancellation  shall  affect  any
subsequent default or impair or exhaust any rights or powers arising therefrom.

            C.  Whenever  an  Event  of  Default  shall  have  occurred  and  be
continuing,  the non-defaulting  party may take whatever action may be necessary
or desirable to collect the payments and other  amounts then due and  thereafter
to become due as provided in this Agreement,  and/or to enforce  performance and
observance of any obligation, agreement or covenant under this Agreement.

            D. [this provision to be adapted for each Charter Municipality based
on applicable  provisions of its existing  waste  disposal  agreement] If at any
time, a Termination  of  Operations  occurs which is not caused by a termination
under Article VIII, Article XI or a Force


                                      -35-
   36

Majeure Event, COMPANY shall pay to MUNICIPALITY,  as liquidated damages in lieu
of all other damages, including special, consequential, or indirect damages, two
hundred and fifty  percent  (250%) of (1) the total Tipping Fees paid to COMPANY
by the  MUNICIPALITY  for  Acceptable  Waste  delivered  to the  Facility  or to
alternate disposal facilities in accordance with this Agreement by it during the
twelve (12) months  immediately  preceding the date on which the  Termination of
Operations  occurred,  or (2) if twelve (12)  months  have not elapsed  from the
commencement of the delivery by MUNICIPALITY of Acceptable  Waste to the date on
which the  Termination  of Operation  occurs,  the total Tipping Fees that would
have been paid by  MUNICIPALITY  to COMPANY had it  delivered to the Facility an
amount of  Acceptable  Waste  equal to its  Guaranteed  Annual  Tonnage for such
Operating Year.

            As  provided  in  the   Outstanding   Agreement  and  other  similar
agreements with the Charter Municipalities,  there is a ceiling in the aggregate
for total  liquidated  damages  that may be paid to the Charter  Municipalities,
except as otherwise provided in the next succeeding  paragraph.  This ceiling is
$5 million, adjusted annually at January 1 (commencing with January 1, 1992) for
changes in the CPI-U as of the immediately  preceding  September 30 from that of
the September of the prior year. A Charter Municipalities' pro rata share of the
ceiling amount is the same ratio as the ratio of its  Guaranteed  Annual Tonnage
to the aggregate of the Guaranteed Annual Tonnage of all Charter  Municipalities
delivering  waste to the  Facility  as of the  date  Termination  of  Operations
occurs.  This  limitation  on liability  for monetary  damages in the event of a
Termination of Operations shall be calculated for all Charter Municipalities and
the  pro  rata  share  of  the  ceiling   amount   allocable  to  those  Charter
Municipalities not constituting Amending Charter Municipalities shall be applied
as a limitation on the amounts payable to such Charter Municipalities.

            In  consideration of the execution and delivery of this Agreement by
MUNICIPALITY and similar  agreements by other Amending  Charter  Municipalities,
COMPANY  hereby  agrees  that the  ceiling  amount  described  in the  foregoing
paragraph and allocable to the


                                      -36-
   37

Amending  Charter  Municipalities  shall  not  apply to the  liquidated  damages
payable to the Amending Charter Municipalities, including MUNICIPALITY.

            It is acknowledged and agreed that the liability of Energy National,
Inc.,  a Utah  corporation  ("ENI"),  as a general  partner of COMPANY,  for the
payment of liquidated damages by COMPANY under this paragraph D shall be limited
to $5 million,  adjusted annually at January 1 (commencing with January 1, 1992)
for changes in the CPI-U as of the immediately  preceding September 30 from that
of the September of the prior year. A Charter  Municipalities' pro rata share of
the  ceiling  amount  applicable  to ENI is the same  ratio as the  ratio of its
Guaranteed  Annual Tonnage to the aggregate of the Guaranteed  Annual Tonnage of
all  Charter  Municipalities  delivering  waste to the  Facility  as of the date
Termination of Operations occurs.

            E. If at any time prior to Termination of Operations,  COMPANY fails
to accept and/or provide for the disposal of Acceptable Waste delivered to it by
MUNICIPALITY  up to its Guaranteed  Plant Capacity Share and such failure is not
caused  by a  Force  Majeure  Event,  COMPANY  shall  pay  to  MUNICIPALITY  all
reasonable costs incurred by MUNICIPALITY in disposing of such Acceptable Waste,
provided that nothing herein  contained  shall be construed to bar  MUNICIPALITY
from obtaining specific  performance of any obligation of COMPANY if such remedy
is otherwise  available.  COMPANY shall not be liable for its refusal or failure
to process any amounts  annually in excess of  MUNICIPALITY'S  Guaranteed  Plant
Capacity  Share,  if at the time such  excess is  proposed  to be  delivered  to
COMPANY,  COMPANY  will not have the  capacity to process such excess based upon
the amount of waste it is receiving from others; provided,  however, that to the
extent the  capacity  is not  available  because of spot  market  tonnage  being
brought in at a Tipping Fee higher than MUNICIPALITY's Tipping Fee, MUNICIPALITY
shall have the option of agreeing to pay such higher Tipping Fee for such excess
in which case COMPANY shall be obligated to accept such waste. COMPANY shall pay
such costs  within  forty-five  (45) days of receipt  of an  itemized  bill from
MUNICIPALITY.


                                      -37-
   38

            F.  In the  event  any  agreement  or  covenant  contained  in  this
Agreement  should be  breached by one party and  thereafter  waived by the other
party, such waiver shall be limited to the particular breach so waived and shall
not be deemed to waive any other breach hereunder.

            ARTICLE XIV. CHANGE IN LAW

            A.  "Change  in  Law"  includes  the  following:  The  promulgation,
adoption,  enactment or change in any law, code,  ordinance or regulation and/or
the rendering of any judgment, order, decree or other governmental action of any
Federal, State or local court, administrative agency, government office, body or
branch,  occurring  subsequent  to January 1, 1991  affecting  the  operation or
maintenance  of the  Facility or the  disposal of Residue,  including  by way of
example but not by way of  limitation a refusal by such a  governmental  body to
grant,  issue or renew  any  required  permit or  license  or  approval  for the
operation  of  the  Facility  unless  changes  in the  Facility  are  made  or a
regulatory requirement imposed after January 1, 1991 by such a governmental body
implementing a previously  enacted statute.  Changes in Federal and State income
tax laws shall not be considered a Change in Law.

            B.  "Change  in  Law  costs"  means  any  increase  in the  cost  of
financing, construction, modifying, operating or maintaining the Facility or the
Site,  or the disposal of Residue,  FEPR or By-Pass  Waste  related  solely to a
Change in Law, which on a cumulative  basis exceeds  $100,000,  provided that if
any such increase in cost results solely from a change in the design,  fuel mix,
or operating  criteria of the Facility which is not mandated by law and which is
initiated by the COMPANY  subsequent  to the execution of this  Agreement,  such
Change in Law cost  shall be  disregarded  for  purposes  of this  Article.  See
Schedule C pertaining to Tipping Fee calculation as to how  Change-in-Law  costs
will be paid.

            C. The following procedures shall govern this Article:

                  1. COMPANY shall notify the  MUNICIPALITY and Municipal Review
Committee  and the  Municipal  Review  Committee  shall  notify  the  COMPANY in
writing, as soon as either party has knowledge of any  administrative,  court or
other governmental action


                                      -38-
   39

or the  enactment  of any law or  regulation  which  could lead to a claim of an
occurrence of a Change in Law. COMPANY shall keep the Municipal Review Committee
informed of the progress of such actions.

                  2.  Upon  determining  the  impact  of  any  Change  in Law or
determining any  Change-in-Law  costs,  COMPANY shall give the Municipal  Review
Committee a detailed  explanation  thereof,  including,  appropriate  designs or
plans  for new  construction  or  modifying  items,  bid cost  and  construction
schedule,  and information  regarding  operations and maintenance costs. COMPANY
shall not expend any monies in response  to a Change in Law until the  Municipal
Review  Committee  has had  forty-five  (45) days to review  such  data,  unless
COMPANY has been directed to or is required to take prior corrective action. The
Municipal  Review  Committee  must  authorize or disapprove  expenditure  of any
Change in Law costs proposed by COMPANY within  forty-five  (45) days of receipt
of the data, or propose an alternative  reasonably  satisfactory to COMPANY,  or
said expenditure shall be conclusively  deemed to be authorized by MUNICIPALITY.
During any Suspension of Operations  because of any Change in Law pending review
by Municipal Review Committee under this paragraph, COMPANY shall be relieved of
any penalties and shall not be deemed to be in default.

            E. Nothing in this Article shall relieve COMPANY from compliance
with any law or regulation or other lawful order.

            ARTICLE XV. FORCE MAJEURE

            A.  Except as herein  provided,  if any  party is  rendered  unable,
wholly or in part, by a Force Majeure Event to carry out its  obligations  other
than any payment  obligation  under the Agreement,  that party shall give to the
other party prompt  written  notice of the Force Majeure  Event with  reasonably
full  particulars  concerning it.  Thereupon the obligations of the Party giving
the notice,  so far as they are affected by the Force  Majeure  Event,  shall be
suspended during, but no longer than the continuance of the Force Majeure Event,
and for a reasonable time thereafter if required to remedy the physical  damages
and/or place the Facility back in operation.


                                      -39-
   40

In the event that the Facility is subjected to a Force  Majeure  Event,  COMPANY
shall not be  obligated  to accept  Acceptable  Waste or arrange  for or pay for
disposal of By-Pass Waste.

            B. The party whose performance is excused due to the occurrence of a
Force  Majeure  Event shall,  during such  period,  keep the other party and the
Municipal  Review  Committee duly notified of all such actions required in order
for it to be able to commence or resume  performance  of its  obligations  under
this Agreement.

            C. Financial  inability of either party hereto or the  technological
inability  of the  Facility to  accomplish  the  purposes  contemplated  by this
Agreement shall not be deemed to be a Force Majeure Event.

            ARTICLE XVI. ADDITIONAL REMEDIES UPON MATERIAL ADVERSE CHANGES

            A. In the event that  COMPANY is required  to provide the  Municipal
Review  Committee  with  notice  of a  material  adverse  change as set forth in
Article XII, paragraph C, and such notice states as therein  contemplated either
COMPANY's  lenders intend to foreclose on the Facility,  COMPANY'S  opinion that
such change  would  likely  result in the  Facility no longer  remaining  in the
business  of being a municipal  solid  waste  disposal  facility,  or  COMPANY's
decision to cause the  Facility  no longer to remain in the  business of being a
municipal solid waste disposal facility, then the Municipal Review Committee may
take the following  actions in addition to those  described in said Article XII,
paragraph C:

            So  long as all  the  Charter  Municipality  agreements  shall  then
expressly  provide  for the same (i.e.  expressly  agree to the  options  herein
described),  no later than 180 days from the date of such  written  notice,  the
Charter  Municipalities may irrevocably elect in writing addressed to COMPANY to
purchase  the  Facility,  including  any reserves of COMPANY not used to satisfy
obligations  under or pursuant to any  obligations of COMPANY to any provider of
credit  enhancement or support for the bonds as set forth below (which  purchase
shall be concluded  no later than the end of such 180 day period) in  accordance
with the  provisions  set forth in Schedule D to this  Agreement,  at a purchase
price equal to $1.00, and title to the Facility


                                      -40-
   41

and such reserves shall be conveyed as provided in Schedule D. Concurrently with
such purchase and as a condition  precedent  thereto,  (i) the  purchaser  shall
assume  all  of  COMPANY'S   then  existing   obligations   in  respect  to  the
construction,  ownership  and  operation  of  the  Facility  (other  than  those
obligations which are obligations that the partners, affiliates or associates of
COMPANY have  undertaken in their  individual  capacities and not as partners or
affiliates of COMPANY),  (ii) all parties to whom such  partners,  affiliates or
associates shall have undertaken any obligations with respect to the Facility in
their individual  capacities and not as partners,  including without limitation,
any  obligations in connection  with COMPANY'S power purchase and sale agreement
with Bangor Hydro and under or relating to capital  contribution  agreements  of
the partners,  but specifically  excluding any obligations to or for the benefit
of  Orrington  Waste  Ltd.  Limited  Partnership  and  any  guaranties  of  such
obligations,  shall have unconditionally released such partners,  affiliates and
associates  therefrom  pursuant to instruments in form and substance  reasonably
satisfactory to each of them;  (iii) all of the obligations of COMPANY under and
pursuant to any agreement or instrument with any provider of credit  enhancement
or support for the bonds shall have been indefeasibly  satisfied in full in cash
by  purchaser,  and (iv) all  parties  whose  consent  is  required  to any such
purchase or assumption shall have  unconditionally  consented thereto in writing
pursuant to instruments in form and substance  satisfactory to COMPANY.  Nothing
in this  Article  XVI  shall  limit or  otherwise  restrict  any right or remedy
provided to any provider of credit  enhancement  or support for the bonds or the
holders  of the  bonds,  including,  without  limitation,  the  right to sell or
otherwise  dispose of the Facility free and clear of any rights  granted by this
Article XVI, upon any exercise of the rights or remedies  provided therein or in
any way  change  or alter any of the  obligations  of  COMPANY  set forth in any
agreements  relating to or securing the bonds or any agreement  between  COMPANY
and any provider of credit enhancement or support for the bonds.

            MUNICIPALITY  and the Municipal  Review  Committee  acknowledge that
some  circumstances  which would give rise to a notice by COMPANY  under Article
XII,  paragraph C could make it difficult or beyond its  reasonable  control for
COMPANY to prevent


                                      -41-
   42

cessation of operations  during the 180 day period  contemplated by this Article
XVI  without a cure of a default or other  interim  remedy  until the  Municipal
Review Committee has concluded its  consideration of appropriate  actions.  Both
COMPANY,  MUNICIPALITY and the Municipal Review Committee agree,  however,  that
there  shall be no  obligation  of either  party to provide  an interim  cure or
remedy, other than the obligation of the parties to diligently meet and consider
measures  to enable  the  Municipal  Review  Committee  to  exercise  its rights
hereunder.

            B.  Notwithstanding  the  rights  set  forth in  paragraph  A above,
COMPANY  may at any time cure,  remedy or cause the  cessation  of the  default,
claim or  adverse  circumstance  which  gave  rise to the  notice  and  possible
cessation of  operations  or loss of  possession;  in which case  COMPANY  shall
provide  the  Municipal  Review  Committee  notice that said  default,  claim or
adverse circumstance has in fact been remedied or cured, or has ceased whereupon
the Municipal Review  Committee's rights under paragraph A above shall terminate
nunc pro tunc;  provided,  however,  that in the event of such cure,  if COMPANY
fails to  provide  the  Municipal  Review  Committee  with  notice of  COMPANY'S
intention  to cure,  remedy  or cause the  cessation  of the  default,  claim or
adverse  circumstance  within 90 days of COMPANY  having  provided  notice under
Article XII, paragraph C, COMPANY shall reimburse the Municipal Review Committee
for justifiable and reasonable costs and expenses the Municipal Review Committee
incurs with respect to the intended purchase of Facility pursuant to paragraph A
so long as  COMPANY'S  need to cure or  remedy  the  default  (of which it gives
notice of its intention) is not caused by the Charter Municipalities'  inability
to purchase the Facility.

            C. The  provisions  set forth in this Article XVI shall not restrict
the rights of COMPANY to secure  additional  or  alternative  financing  for the
Facility  prior to providing  notice under  Article XII,  paragraph C.  However,
COMPANY acknowledges its obligation under the Charter Municipality agreements to
fully  inform  the   Municipal   Review   Committee   of   COMPANY'S   financial
circumstances.  COMPANY  agrees to provide upon request by the Municipal  Review
Committee  copies of its credit  agreements  and other  financing  agreements to
which it is a party.  COMPANY also  acknowledges  that since changes in the debt
obligations of


                                      -42-
   43

COMPANY with respect to the  Facility  are of interest to the  Municipal  Review
Committee  as a potential  purchaser  of the  Facility,  COMPANY will advise the
Municipal  Review  Committee  of any new  financing  activities.  In  turn,  the
Municipal Review Committee  acknowledges  that any active pursuit of alternative
financing by the Municipal Review Committee  without  COMPANY'S  knowledge could
have an  adverse  impact on  COMPANY'S  operating  ability  and agrees to advise
COMPANY  first of any  desire to  refinance  the  Facility  and to  utilize  the
consultation  provisions  of the  Charter  Municipality  agreements  to consider
mutually with COMPANY any such proposals.

            D.  After  the  Municipal  Review  Committee   undertakes   remedial
measures,  if the Facility  continues to be available to Charter  Municipalities
for processing  their waste,  notwithstanding  a decision by some or all Charter
Municipalities  to  terminate  their  delivery of waste to the  Facility,  it is
intended  by this  Article  XVI that an  Event of  Default  and  Termination  of
Operations shall not be deemed to have occurred and COMPANY'S  obligations under
Article XIII, if any,  relating to the payment of liquidated  damages to Charter
Municipalities in the event of a Termination of Operations shall not apply.

            E. The  provisions  set forth in  paragraph  A granting  the Charter
Municipalities  the right to acquire COMPANY'S right,  title and interest in the
Facility and all of COMPANY'S obligations are conditioned upon receipt of a duly
authorized  waiver,  from all of the  Charter  Municipalities,  of  damages  and
acknowledgment  of the  absence  of an  Event of  Default  under  Article  XIII,
paragraph D of the Charter  Municipality  agreements.  Such waiver of damages by
the Charter  Municipalities  shall not apply to any  subsequent  Termination  of
Operations  if the  Municipal  Review  Committee's  remedial  efforts  result in
continued  availability of Facility under COMPANY'S  ownership or possession and
there is a subsequent  cessation of operations in a separate  occurrence that is
not remedied.

            F. The waivers and  obligations of COMPANY set forth in this Article
XVI shall remain  effective only so long as no Charter  Municipality has filed a
civil action or initiated an arbitration  proceeding against COMPANY alleging or
based upon an infirmity in the


                                      -43-
   44

Municipal Review Committee's  consent or a violation or breach of Article XXXIII
of the Charter  Municipality  agreements;  provided  that COMPANY may waive this
limitation on the  effectiveness of its waivers and obligations  created by this
Article XVI.

            ARTICLE XVII. ASSIGNMENT

            A. Except as provided in paragraph D below, this Agreement shall not
be assigned by COMPANY to any third party  without  Municipal  Review  Committee
approval, which shall not be unreasonably withheld.

            B. This Agreement shall not be assigned by MUNICIPALITY to any third
party without COMPANY approval, which shall not be unreasonably withheld.

            C. Notwithstanding paragraphs A and B of this Article,  MUNICIPALITY
may assign  its  interest  in this  Agreement  to the  District,  provided  such
District includes the MUNICIPALITY.

            D.  MUNICIPALITY  acknowledges that this Agreement has been assigned
as security to the banks  which  provided  financing  for the  Facility  and the
assignment  remains  effective in all respects  with respect to this  Agreement.
MUNICIPALITY  further  acknowledges  that  this  Agreement  has  been or will be
assigned as security to the Finance  Authority of Maine,  as the issuer of bonds
to provide  refinancing  for the  Facility,  to the  trustee for holders of such
bonds and to any other entity or entities  which provide credit support for such
bonds, and the assignment remains effective in all respects with respect to this
Agreement.  MUNICIPALITY agrees to provide,  upon written request of COMPANY, to
COMPANY  or  any  party  described  in  the  previous   sentence  in  writing  a
confirmation of its  acknowledgment of and consent to any such assignment and as
to the effectiveness of this Agreement.

            ARTICLE XVIII. PERFORMANCE CREDITS

            A. Under Article XVIII of the Outstanding Agreement, MUNICIPALITY is
entitled  to certain  Performance  Credits on the terms and  conditions  therein
specified.  Since this Agreement amends the manner of calculation of Performance
Credits,  MUNICIPALITY  and  COMPANY  hereby  agree  that  for  purposes  of the
calculation of Performance Credits and Net


                                      -44-
   45

Compensation under the Outstanding  Agreement,  the close of business of the day
before the Closing  Date shall be treated as the end of a calendar  year and any
Performance Credits and Net Compensation earned under the Outstanding  Agreement
shall be  calculated  and  determined  as of such  date,  giving  effect  to the
release,  if any, of funds from  reserve  accounts  effected on the Closing Date
which are to be taken into account as  Distributable  Cash (as defined in and in
accordance with the Outstanding  Agreement).  It is acknowledged and agreed that
the Finance Authority of Maine has indicated that it will require the funding of
certain  reserve  funds or accounts on the Closing  Date:  $6,000,000  in a debt
service  reserve  account,  such deposit to be made by funds  advanced by Bangor
Hydro under the amended  Power  Purchase  Agreement;  $3,000,000 in an operating
reserve fund, such deposit to be made by funds provided by COMPANY from existing
reserves  released as a result of the  refinancing;  and $1,000,000 in a capital
improvement  fund,  such  deposit to be made by funds  provided by COMPANY  from
existing  reserves  released  as  a  result  of  the  refinancing.  MUNICIPALITY
acknowledges  and agrees that such  closing  requirements  are  preliminary  and
consents to  additional  deposits in these or other  reserve  accounts as may be
required  of COMPANY or Bangor  Hydro by the  Finance  Authority  of Maine,  the
trustee for the bonds or any provider of credit  enhancement or support for such
bonds, as approved by the Municipal  Review  Committee.  It is acknowledged  and
agreed that to the extent that any cash  reserves of COMPANY  existing  prior to
the Closing Date are used to fund  operating  or debt service  reserves or other
financial  requirements  in respect of, or are required in connection  with, the
bonds  to be  issued  on the  Closing  Date  to  refinance  the  Facility,  such
pre-existing cash reserves shall not be treated as Distributable  Cash under the
Outstanding Agreement. It is further acknowledged and agreed that COMPANY on the
Closing  Date,   after   providing  for  payment  or  reserves  for  payment  of
Distributable  Cash (as  defined in the  Outstanding  Agreement)  to the Charter
Municipalities  and  COMPANY  (including  Net  Compensation  (as  defined in the
Outstanding  Agreement)),  funding  reserves  and capital  improvement  funds as
contemplated  above and retaining  sufficient  operating funds,  consistent with
prior practices and prudent  financial  management,  to permit operations of the
Facility, shall


                                      -45-
   46

distribute  the remainder of its then existing cash balances  one-half  (50%) to
the Charter Municipalities and one-half (50%) to partners in COMPANY.

            The Performance Credits earned under the Outstanding Agreement shall
be calculated as of the Closing Date and a preliminary  payment  thereof made by
COMPANY as soon as reasonably  practicable  thereafter,  initially calculated on
the assumption  that all Charter  Municipalities  will become  Amending  Charter
Municipalities,  subject to a final payment and adjustment to reflect the actual
Amending Charter Municipalities to be made on or before September 1, 1998.

            B. Performance  Credits under this Agreement shall be determined and
paid in accordance  with this paragraph B. The Amending  Charter  Municipalities
shall have the right to receive, in cash, one-third (33-1/3%) of the cumulative,
Distributable  Cash, as defined in Schedule E annexed hereto, from and after the
Closing  Date (the  "Performance  Credits"),  which  shall be  payable to Bangor
Savings Bank or other institution  designated by the Municipal Review Committee;
provided,  however,  that the rights of the Amending Charter  Municipalities  to
receive  Performance  Credits shall be subject to and limited by the prior right
of the Municipal Review Committee to allocate and apply  Performance  Credits to
the purchase of limited  partnership  interests in COMPANY pursuant to Paragraph
(C)(3)(III)  of Article XIX of this  Agreement.  Notwithstanding  the  foregoing
provisions  of this Article  XVIII,  (i) any cash  deposited  in the  "Principal
Reserve and  Redemption  Account" (or similar  account) or in the "Bangor  Hydro
Reserve Account" (or similar account) required by the Finance Authority of Maine
into which Bangor Hydro's installment  payments under the amended Power Purchase
Agreement are payable,  and (ii) any payments made to reserve accounts  required
by the Finance  Authority of Maine, the trustee for the bonds or any provider of
credit  enhancement  or support for such bonds by COMPANY or  MUNICIPALITY  from
installment  payments  made by Bangor  Hydro  under the amended  Power  Purchase
Agreement or from  amounts  that would  otherwise  constitute  distributions  to
COMPANY or MUNICIPALITY  under the Trust Agreement,  to the extent not otherwise
applied in accordance with the Trust Agreement or other document governing such


                                      -46-
   47

reserve  account  (collectively,  the "Equity  Reserves"),  shall not constitute
Distributable Cash under this Agreement, and the Amending Charter Municipalities
and the  partners in COMPANY as of the Closing Date shall each have the right to
receive  one-half  (50%)  of the  Equity  Reserves  and  any  investment  income
therefrom, from and after the Closing Date, but only if and to the extent and at
the time that such Equity Reserves and investment income (or funds held in other
accounts in lieu  thereof) are released to COMPANY,  as further  provided in the
Trust  Agreement;  provided,  however,  that the rights of the Amending  Charter
Municipalities to receive Equity Reserves and investment income thereon shall be
subject to and limited by the prior right of the Municipal  Review  Committee to
allocate and apply such Equity Reserves and investment income to the purchase of
limited  partnership  interests in COMPANY pursuant to Paragraph  (C)(3)(III) of
Article XIX of this  Agreement.  The amount of Equity Reserves to be distributed
to the Amending Charter Municipalities shall be allocated to MUNICIPALITY in the
same  proportion  that  Performance  Credits are then allocated to  MUNICIPALITY
under the next  succeeding  paragraph.  The portion of the Equity  Reserves  and
investment  income to be paid to  MUNICIPALITY  shall be paid to Bangor  Savings
Bank or other institution designated by the Municipal Review Committee. From the
Performance Credits payable to the Amending Charter  Municipalities  there shall
be  deducted  "Performance  Credits"  (as  defined  therein)  payable to Charter
Municipalities that are not Amending Charter Municipalities under waste disposal
agreements with COMPANY.

            The amount of Performance  Credits to be distributed to the Amending
Charter  Municipalities  shall be allocated to MUNICIPALITY in proportion to the
average of (a) the proportion of Acceptable Waste credited to MUNICIPALITY under
this  Agreement to the aggregate  amount of Acceptable  Waste credited to all of
the Amending  Charter  Municipalities  under this  Agreement  and similar  waste
disposal  agreements in the calendar  quarter for which the Performance  Credits
are being calculated; and (b) the proportion of the Guaranteed Annual Tonnage of
MUNICIPALITY  to  the  Guaranteed   Annual  Tonnage  for  all  Amending  Charter
Municipalities,  as of the  last  day of the  calendar  quarter  for  which  the
Performance Credits are


                                      -47-
   48

being  calculated.  Notwithstanding  the  immediately  preceding  sentence,  the
Municipal Review Committee,  upon a vote of its Board,  following an opportunity
to be heard by any  affected  Amending  Charter  Municipality,  and upon written
notice to  COMPANY  and  MUNICIPALITY  given not less  than 45 days  before  the
effective date of such change, may change the allocation of Performance  Credits
among  the  Amending  Charter  Municipalities,   including   MUNICIPALITY.   The
Performance  Credits shall be calculated  quarterly based upon the operations of
the Facility  during the preceding  quarter.  The  Performance  Credits shall be
recognized upon  determination,  but  MUNICIPALITY  shall not be entitled to any
credit or payment of Performance  Credits until the end of the following quarter
or as soon thereafter as funds are released  therefor under the Trust Agreement,
but only to the extent that funds are released under the Trust Agreement and are
available  therefor.   Upon  delivery  of  the  annual  audit  of  COMPANY,  the
Performance  Credits  for the year  covered by the audit  shall be  adjusted  to
accord with the audit, and any credits or debits thereto shall be applied to the
next distribution of Performance Credits hereunder.

            ARTICLE XIX. EXERCISE OF OPTION TO EXTEND TERM; OPTION TO PURCHASE
PARTNERSHIP INTERESTS; OPTION TO PURCHASE LIMITED PARTNERSHIP INTERESTS

            A. By the execution and delivery of this Agreement, MUNICIPALITY has
irrevocably  elected to exercise the option under Article XIX of the Outstanding
Agreement,  alternative (D)(3), to extend the term of the Outstanding  Agreement
for 15 years.  MUNICIPALITY  acknowledges  and consents to the  reduction in the
extension of the term of the Outstanding Agreement from 15 years to 14 years, as
evidenced by this  Agreement,  in order to coincide  with the stated  expiration
date of the original and amended Power Purchase  Agreement  between Bangor Hydro
and COMPANY,  and  MUNICIPALITY  acknowledges  and agrees that such reduction in
term is in the best interests of  MUNICIPALITY  and its residents.  MUNICIPALITY
further acknowledges and agrees that such exercise is effective  notwithstanding
any variation of terms of this Agreement from the Outstanding Agreement.


                                      -48-
   49

            By the execution and delivery of this Agreement and of similar waste
disposal agreements by other Amending Charter  Municipalities and the acceptance
hereof and thereof by COMPANY,  it is acknowledged and agreed that MUNICIPALITY,
with such other Amending Charter Municipalities,  have effectively exercised the
option  granted  to  the  Charter   Municipalities  under  Article  XIX  of  the
Outstanding  Agreement  and other  similar  agreements  (alternative  (D)(3)) to
extend  the  term  of the  Outstanding  Agreement  and the  outstanding  Charter
Municipality   agreements   between  COMPANY  and  the  other  Amending  Charter
Municipalities,  notwithstanding that the extension is in substance for 14 years
instead of 15 years (since that date coincides with the stated  expiration  date
of the original and amended Power  Purchase  Agreement  between Bangor Hydro and
COMPANY),  notwithstanding  any  variation of terms of this  Agreement  from the
Outstanding  Agreement,  and  notwithstanding  that  the  effectiveness  of such
exercise  is to be based  on the  selection  of an  alternative  by the  Charter
Municipalities  with a majority of  Guaranteed  Annual  Tonnage as of January 1,
2003 (since the Amending Charter  Municipalities  will constitute at the Closing
Date a majority of Guaranteed Annual Tonnage and no pooling of Guaranteed Annual
Tonnage on or before January 1, 2003, may cause the Guaranteed Annual Tonnage of
the Amending Charter Municipalities to be less than 51% of the Guaranteed Annual
Tonnage  of all  Charter  Municipalities,  as  provided  in  Article  V of  this
Agreement  and the  other  Charter  Municipality  agreements  with the  Amending
Charter Municipalities).  Consequently,  no other option remains to be exercised
by  MUNICIPALITY  under  Article XIX of the  Outstanding  Agreement  (including,
without limitation, the option to purchase the Facility on March 31, 2004).

            B. The Amending Charter Municipalities,  including MUNICIPALITY,  if
they remain  parties to Charter  Municipality  agreements  with COMPANY  through
March 31, 2018,  have the right to purchase as of March 31, 2018 all partnership
interests in COMPANY not owned by Equity  Charter  Municipalities,  in whole but
not in part,  at their  then fair  market  value,  as  further  provided  in the
partnership agreement of COMPANY as in effect on the Closing Date,


                                      -49-
   50

whether  or  not  such  Amending  Charter   Municipalities  are  Equity  Charter
Municipalities,  and which option may be  exercised by one,  more or all of such
Amending Charter Municipalities.

            C. MUNICIPALITY  shall have the right, in conjunction with the other
Amending  Charter   Municipalities  (except  those  municipalities  that  become
Amending  Charter  Municipalities  after  September  30,  1998),  to exercise an
irrevocable  option  to  participate  in the  purchase  of  limited  partnership
interests in COMPANY (the "Equity Participation  Option") up to 50% of the total
interest in capital and profits of COMPANY,  which is hereby granted to all such
Amending Charter  Municipalities  and described below,  subject to the following
terms and conditions:

            1. Term of Equity  Participation  Option.  Notice of exercise of the
Equity  Participation Option must be given by 5:00 o'clock p.m. on September 30,
1998.  If notice  of the  exercise  of the  Equity  Participation  Option is not
received  by  COMPANY  as  provided  in  subparagraph  (2)  hereof,  the  Equity
Participation  Option in favor of MUNICIPALITY shall expire. The exercise of the
Equity Participation Option is irrevocable by MUNICIPALITY.

            2. Means of  Exercise.  The  Equity  Participation  Option  shall be
exercised by written notice  delivered to COMPANY at its offices at the Facility
in Orrington,  Maine,  either by personal delivery to the Facility on-site plant
Manager,  or by certified mail,  received prior to the expiration of the term of
the Equity Participation Option.

            3. Participation by MUNICIPALITY. To be an effective exercise of the
Equity Participation  Option, the notice of exercise of the Equity Participation
Option shall contain a certification  by MUNICIPALITY and an  acknowledgment  by
the Municipal  Review  Committee  that  MUNICIPALITY  and the  Municipal  Review
Committee  have entered into the MRC  Administration  Authorization  pursuant to
which  MUNICIPALITY has irrevocably  appointed the Municipal Review Committee to
act as its agent in the  administration  of the purchase of limited  partnership
interests  in  COMPANY  pursuant  to the  Equity  Participation  Option  and the
application  of  partnership  distributions,  including  authorization  for  the
Municipal   Review  Committee  to  designate  in  the  name  and  on  behalf  of
MUNICIPALITY the amount of


                                      -50-
   51

Performance  Credits to be applied on the  account of  MUNICIPALITY  to purchase
limited  partnership  interests in COMPANY,  as  contemplated  by paragraph  III
below.

            If  an  Amending  Charter  Municipality,   including   MUNICIPALITY,
effectively  exercises its Equity Purchase Option,  it then shall have the right
to purchase limited partnership  interests in COMPANY on the following terms and
conditions,  as further provided in the partnership  agreement of COMPANY, as in
effect on the Closing Date:

            I. Additional Partnership Interests. Such limited partnership
interests shall be additional limited partnership interests authorized by the
partnership agreement of COMPANY, and shall not constitute a sale or assignment
by any current partner in COMPANY of its partnership interest as in effect
before the Closing Date.

            II.  Purchase Price.  The purchase price of five-ninths  (5/9ths) of
the total  limited  partnership  interests in COMPANY  (which  equals 50% of the
total   interest  in  capital  and  profits  of  COMPANY)   shall  be  equal  to
$31,000,000.00 (the "Purchase Price");  provided,  however,  that if less than a
five-ninths  (5/9ths) limited  partnership  interest is purchased,  the purchase
price shall be equal to a proportionate share of the Purchase Price based on the
limited partnership interests acquired.

            The total  limited  partnership  interests  for all  Equity  Charter
Municipalities  acquired at any one time,  as provided in  paragraph  III below,
shall be equal to the product of: (i) five-ninths  (5/9ths) of the total limited
partnership  interests in COMPANY,  times (ii) the aggregate amount then paid by
the Equity Charter  Municipalities  pursuant to paragraph III,  divided by (iii)
the Purchase Price;  provided,  however, that at no time through the exercise of
the Equity Participation Option may the Equity Charter Municipalities acquire in
the  aggregate  more than 50% of the total  interest  in capital  and profits of
COMPANY.

            III. Payment of Purchase Price. If MUNICIPALITY has effectively
exercised the Equity Purchase Option, the Municipal Review Committee, on behalf
of MUNICIPALITY, may, at any time and from time to time (but not more frequently
than once each calendar quarter) after the later of: (i) September 30, 1998, or
(ii) the date six months after


                                      -51-
   52

the Closing  Date,  purchase  limited  partnership  interests  in COMPANY by the
designation  of  all  or  a  portion  of  the  Performance  Credits  payable  to
MUNICIPALITY or previously  paid to  MUNICIPALITY  under Article XVIII or Equity
Reserves payable or previously paid to MUNICIPALITY  under Article XVIII for use
by COMPANY in the prepayment and redemption of bonds or other borrowing that has
refinanced  the Facility and COMPANY hereby agrees to apply such amounts to such
purpose as soon as is reasonably  practicable under the documents  evidencing or
securing such bonds or other  borrowing.  The effective  date of the purchase of
the  limited  partnership  interests  shall  be  the  date  on  which  COMPANY's
obligations  in respect of the bonds or such other  borrowing  is  prepaid.  The
amount of Performance  Credits or Equity Reserves to be applied by the Municipal
Review  Committee  on  behalf  of  MUNICIPALITY  and all  other  Equity  Charter
Municipalities  at any single time to  purchase  limited  partnership  interests
shall be equal in principal amount to an authorized principal amount of bonds or
such other borrowing that may then be prepaid in accordance with their terms.

            Pursuant  to the MRC  Administration  Authorization,  the  Municipal
Review Committee on behalf of MUNICIPALITY shall designate quarterly the amount,
if any, of the Performance Credits and Equity Reserves allocated to MUNICIPALITY
to be applied to such purchase.  To the extent that such Performance Credits and
Equity  Reserves  are so  applied,  MUNICIPALITY  shall  have  acquired  limited
partnership interests in COMPANY to the extent of the purchase price thereof, as
further  provided in the  partnership  agreement of COMPANY.  COMPANY  agrees to
evidence such partnership interests in its books and records and to provide such
further  documentation thereof as MUNICIPALITY or the Municipal Review Committee
shall reasonably request.

            MUNICIPALITY  acknowledges  that  its  ownership  share  of  limited
partnership  interests  in  COMPANY  will be  based on its  respective  share of
cumulative prior contributions of Performance Credits and Equity Reserves toward
the purchase of such limited partnership interests. MUNICIPALITY hereby ratifies
and confirms its delegation to the Municipal  Review  Committee  pursuant to the
MRC Administration Authorization, to the extent


                                      -52-
   53

permitted by law, of authority to vote and  otherwise act in its name and on its
behalf  as  to  its  limited  partnership  interests  in  COMPANY.   Partnership
distributions to be made to MUNICIPALITY as a result of its limited  partnership
interest in COMPANY shall be made to Bangor  Savings  Bank, as custodian,  to be
administered by the Municipal Review Committee on behalf of MUNICIPALITY.

            MUNICIPALITY   acknowledges   and  agrees   that   COMPANY   has  no
responsibility  or duty  whatsoever  to  MUNICIPALITY  or the  Municipal  Review
Committee to advise either of them as to the use and  application of Performance
Credits or Equity Reserves, exercise of the Option or the use and application of
partnership distributions, if any.

            ARTICLE XX. NOTICES

            All notices  herein  required or  permitted to be given or furnished
under this Agreement by either party to the other shall be in writing, and shall
be  deemed  sufficiently  given  and  served  upon  the  other  party if sent by
certified  or  registered  mail,  return  receipt  requested,  postage  prepaid,
addressed as follows:

            If to COMPANY:      Penobscot Energy Recovery Company,
                                  Limited Partnership
                                  P.O. Box 160
                                    Route 15
                                   River Road
                             Orrington, Maine 04475
                            Attention: Plant Manager

            With copies to:     Charles J. Micoleau, Esq.
                                Curtis Thaxter Stevens
                                Broder & Micoleau
                                One Canal Plaza
                                P.O. Box 7320 DTS
                                Portland, Maine 04112

                                and

                                Municipal Review Committee, Inc.
                                Eastern Maine Development Corporation
                              One Cumberland Place
                               Bangor, Maine 04401


                                      -53-
   54

            If to MUNICIPALITY: See Schedule A

            With a copy to:     Municipal Review Committee, Inc.
                                Eastern Maine Development Corporation
                              One Cumberland Place
                               Bangor, Maine 04401

Each party  shall have the right,  from time to time to  designate  a  different
person and/or address by notice given in conformity with this section.

            ARTICLE XXI. BINDING EFFECT

            The  Agreement  shall  bind  upon and  inure to the  benefit  of the
parties hereto and their respective successors or assignees.

            ARTICLE XXII. OTHER DOCUMENTS

            Each  party   promises   and  agrees  to  execute  and  deliver  any
instruments  and to  perform  any acts  which  may be  necessary  or  reasonably
required in order to give full effect hereto.

            ARTICLE XXIII. HEADINGS

            Captions  and headings  herein are for ease of reference  and do not
constitute a part of this Agreement.

            ARTICLE XXIV. COUNTERPARTS

            This Agreement may be executed in more than one counterpart, each of
which shall be deemed an original and all of which together shall constitute the
same agreement.

            ARTICLE XXV. APPLICABLE LAW

            The  law  of  the  State  of  Maine  shall   govern  the   validity,
interpretation, construction and performance hereof.

            ARTICLE XXVI. AMENDMENT OF AGREEMENT

            No amendments to this Agreement may be made except in writing signed
by both parties.  This Agreement has been or will be assigned to a trustee under
bond financing


                                      -54-
   55

arrangements  or to the issuer or the providers of credit  enhancement  for such
bonds and the  written  consent of all such  assignees  shall  also be  required
before any amendment becomes effective.

            ARTICLE XXVII. SEVERABILITY

            In the event any covenant,  condition or provision of this Agreement
is  held to be  invalid  or  unenforceable  by a final  judgment  of a court  of
competent jurisdiction,  the invalidity or unenforceability  thereof shall in no
way affect any of the other covenants, conditions or provisions hereof, provided
that such  remaining  covenants,  conditions  or  provisions  can  thereafter be
applicable and effective without  materially  changing the obligations of either
party.

            ARTICLE XXVIII. RELATIONSHIP OF THE PARTIES

            Nothing herein shall be deemed to constitute either party a partner,
agent or local  representative  of the other  party or to create  any  fiduciary
relationship between the parties. MUNICIPALITY may, however, acquire an interest
in COMPANY as provided in Article XIX hereof.

            ARTICLE XXIX. REPRESENTATIVES

            The  authorized  representative  of  each  of the  parties  for  the
purposes  hereof  shall be such  persons  as the  parties  may from time to time
designate in writing.

            ARTICLE XXX. INTEGRATION; CONFLICTS

            This instrument  (including all Schedules attached hereto, which are
hereby  incorporated  herein and made a part hereof)  embodies the whole of this
Agreement.  There are no promises, terms, conditions, or obligations between the
parties  other  than  those  contained  herein  or  in  the  written  agreements
specifically  referenced herein (such as the Trust Agreement,  the amended Power
Purchase Agreement between Bangor Hydro and COMPANY and the Warrant  Agreement).
This  Agreement  amends,  supplements,  restates,  extends  and  supersedes  the
Outstanding  Agreement  and  all  supplements  thereto  and all  other  previous
communications,  representations, or agreements, either oral or written, between
the parties hereto in respect of the subject matters covered hereby.


                                      -55-
   56

            In the event that the  requirements of any Article of this Agreement
shall be found to be inconsistent with those of any Schedule,  the Article shall
control.

            ARTICLE XXXI. CONSENTS

            To the extent that the consent of either party to this  Agreement is
required to any action of the other  party  pursuant  to any  provision  of this
Agreement, such consent will not be unreasonably withheld.

            ARTICLE XXXII. ARBITRATION

            A. MUNICIPALITY and COMPANY shall confer from time to time to review
Facility operations and the relationship in general.

            B.  MUNICIPALITY and COMPANY agree that, if any dispute arises under
Articles V(D), (E) and (I), VI, VII, X, XII, XIII,  XIV, XVI, XVII,  XVIII,  and
XIX(F),  resolution  of that  dispute  shall be  conducted  by  COMPANY  and the
Municipal  Review  Committee  pursuant  to this  Article  XXXII and the  results
thereof  shall be binding on  MUNICIPALITY,  COMPANY  and the  Municipal  Review
Committee.

            C. The parties  shall submit such dispute to an arbitrator to obtain
a binding resolution  thereof.  The dispute shall be submitted to the arbitrator
as soon as the dispute arises.  The arbitrator shall be a person mutually agreed
upon by the parties or, if the parties are unable to reach such agreement, there
shall be three (3) arbitrators,  one selected by each of the parties within five
(5) days after the dispute arises and a third chosen by the two appointed within
five (5) days after their  selection.  The parties then shall  provide  whatever
information and material the arbitrators  deem necessary to resolve the dispute.
The  arbitrators  shall  decide the  dispute  within  twenty (20) days after the
arbitrators  have been selected.  If there is only one arbitrator,  his decision
shall be binding on COMPANY,  MUNICIPALITY and the Municipal  Review  Committee,
and if there are three,  the  decision of any two shall be binding.  The parties
intend  that  this  arbitration  process  will  expeditiously  resolve  disputes
relative to financial or


                                      -56-
   57

technical matters relating to the Facility. The costs of such arbitration shall
be shared equally by the parties.

            ARTICLE XXXIII. MISCELLANEOUS

            To  the  extent   permitted   by  law,  no   municipality,   Charter
Municipality,   or   commercial   entity   will   be   offered   a  long   term,
non-interruptible  waste  disposal  agreement  by  COMPANY  on  any  terms  more
favorable than  described  herein unless either the Municipal  Review  Committee
consents or all more favorable terms,  including tipping fee, are made available
to  MUNICIPALITY.  No  municipality  will be offered  any Spot  Market  Contract
without Municipal Review Committee consent.

            COMPANY  agrees  that the  tipping  fee rate under any future  waste
disposal  contracts  with  the  City of  Ellsworth  and the  Towns  of  Newport,
Pittsfield,  Detroit,  Monroe, Prospect,  Winterport and Frankfort,  Maine, will
equal at least  the  greater  of (i) the  market  rate in effect at the time for
waste disposal  agreements  with  substantially  similar terms, or (ii) the then
current  Charter  Municipality  rate (the  average of the Tipping Fee under this
Agreement and, if there are Charter Municipalities that are not Amending Charter
Municipalities, the Tipping Fee in effect under the waste disposal agreements of
such Charter  Municipalities  with  COMPANY),  plus the  "Equivalent  Escalating
Spread,"  as  reasonably   determined  by  the  Municipal  Review  Committee  in
consultation with COMPANY.

            COMPANY  may  engage  in  refinancing  of   indebtedness   or  other
borrowings  at any time without the consent of the  Municipal  Review  Committee
only if such refinancings or other borrowing do not materially  adversely affect
Distributable Cash or the Performance Credits;  provided,  however, that COMPANY
may incur  indebtedness,  without the consent of the Municipal Review Committee,
to the extent COMPANY  reasonably deems necessary to provide for maintenance and
repair of the Facility or to enable the Facility or its operation to comply with
applicable law or permit requirements.


                                      -57-
   58

            This  Agreement  shall not take effect  unless and until the Closing
Date occurs.  If the Closing Date does not occur on or before December 31, 1998,
this Agreement shall be without force and effect, and the Outstanding Agreement,
as such as been heretofore otherwise amended or supplemented,  shall continue to
govern.

            IN WITNESS  WHEREOF,  the parties hereto have executed this amended,
supplemented, restated and extended agreement on this ____ day of _______, 199_.

WITNESS:                              [MUNICIPALITY]



____________________________          By:_______________________________________

                                       Its

                                    PENOBSCOT ENERGY RECOVERY COMPANY,
                                      LIMITED PARTNERSHIP


                                    By: PERC Management Company,

                                          Its General Partner


                                    By: PERC, Inc.

                                          Its General Partner


                                       By:

                                          Its President


                                      -58-
   59

                                    By: Energy National, Inc.,

                                          Its General Partner


                                       By:

                                        Title:


                                      -59-
   60

                                   SCHEDULE A

Name and address of MUNICIPALITY:




Send copy of notices to MUNICIPALITY to:




1. Guaranteed Annual Tonnage per Operating Year to be delivered by MUNICIPALITY
pursuant to Article V

2. Monthly Estimate (non-binding) of tons of Acceptable Waste

                  Jan.  ______      July  ______
                  Feb.  ______      Aug.  ______
                  March ______      Sept. ______
                  April ______      Oct.  ______
                  May   ______      Nov.  ______
                  June  ______      Dec.  ______


                                      -60-
   61

                                   SCHEDULE B

                    Charter Municipalities and Reference GATs

                        Charter Municipality                    Reference GAT
                        --------------------                    -------------

                           Albion                                     600
                           Alton                                      260
                           Atkinson                                   144
                           Baileyville                              1,200
                           Bangor                                  27,000
                           Bar Harbor                               4,600
                           Blue Hill                                2,000
                           Boothbay Reg.                            4,500
                           Bradley                                    425
                           Brewer                                   9,000
                           Brooks                                     258
                           Brownville                                 640
                           Bucksport                                2,750
                           Burnham                                    500
                           Camden, Rockport, Lincolnville, Hope     5,400
                           Carmel                                     700
                           Central Penobscot                        1,100
                           China                                    1,000
                           Clifton                                    300
                           Clinton                                  2,000
                           Corinna                                  1,729
                           Cushing                                    444
                           Dedham                                     400
                           Dexter                                   3,600
                           Dover-Foxcroft                           1,700
                           Eddington                                  960
                           Enfield                                    700
                           Exeter                                     250
                           Fairfield                                3,000
                           Friendship                                 492
                           Glenburn                                 1,300
                           Gouldsboro                                 800
                           Greenbush                                  375
                           Guilford                                 1,400
                           Hampden                                  3,200
                           Hancock                                  1,014
                           Hermon                                   1,965
                           Holden                                   1,050
                           Jackson                                    130
                           Charter Municipality             Reference GAT
                           --------------------             -------------


                                      -61-
   62

                           Lamoine                                    350
                           Lee                                        352
                           Levant                                     679
                           Lincoln                                  3,000
                           Lucerne                                    175
                           Mariaville                                 106
                           Marion                                   5,400
                           Mars Hill                                  500
                           Mattawamkeag                               400
                           Milford                                  1,100
                           Millinocket                              3,000
                           Milo                                     1,320
                           Monson                                     160
                           Mt. Desert                               1,800
                           Newburgh                                   500
                           Old Town                                 5,000
                           Orland                                     750
                           Orono                                    5,100
                           Otis                                       210
                           Owls Head                                  780
                           Palmyra                                    500
                           Parkham                                    168
                           Penobscot County                           700
                           Pleasant River SWD                       1,400
                           Plymouth                                   360
                           Reed Plantation                            100
                           Rockland                                 5,100
                           St. Albans                                 474
                           Sangerville                                400
                           Searsport                                1,500
                           South Thomaston                            600
                           Southwest Harbor                         2,000
                           Stetson                                    220
                           Steuben                                    380
                           Stonington                                 604
                           Surry                                    1,000
                           Thomaston                                1,560
                           Thorndike                                  200
                           Tremont                                  1,000
                           Trenton                                    600
                           Troy                                       250
                           Union                                      300
                           Unity                                      702
                           Charter Municipality             Reference GAT
                           --------------------             -------------

                           Vassalboro                               1,250
                           Veazie                                     800


                                      -62-
   63

                           Verona                                     275
                           Waldoboro                                2,100
                           Waterville                              21,000
                           West Gardner                             1,005
                           Winslow                                  3,850
                           Winthrop                                 3,200


                                      -63-
   64

       MUNICIPALITIES WITH LONG-TERM WASTE DISPOSAL CONTRACTS WITH COMPANY
         BUT WHICH ARE NOT CHARTER MUNICIPALITIES AS OF THE CLOSING DATE

                Municipality                      Guaranteed Annual Tonnage
                ------------                      -------------------------

                Abbott                                        190
                Aroostook Valley                              790
                Bowerbank                                      25
                Bridgewater                                    75
                Burlington/Lowell                             200
                Castine                                       260
                Cherryfield                                   300
                Chester                                       220
                Dixmont                                       150
                Edinburg                                       38
                Etna                                          350
                Freedom                                       194
                Harrington                                    300
                Howland                                       425
                Hudson                                        150
                Kenduskeag                                    170
                Knox                                          150
                LaGrange                                      180
                Maxfield                                       24
                Medford                                        50
                Milbridge                                     625
                Monticello                                    240
                Montville                                     260
                NARIF                                       8,000
                Northern Katahdin                           1,500
                Oakfield                                      260
                Passadumkeag                                  160
                Piscataquis                                   200
                Reed Plantation Group                         224
                St. Francis, St. John Plantation              275
                Searmont                                      270
                Sebec                                         180
                Sherman                                       480
                Springfield                                   160
                Swans Island                                  200
                TriCounty                                   1,180
                Wiscasset                                   3,400


                                      -64-
   65

                                   SCHEDULE C

                             Tipping Fee Calculation

            A. The two  components  of the total  Tipping Fee to be paid are the
Base Rate and the  Variable  Rate.  The Base Rate,  for the period from April 1,
1991 through and including  December 31, 1991, is $35.16 per ton which Base Rate
shall  be  available  to only  Charter  Municipalities.  The Base  Rate  will be
adjusted in subsequent  Operating Years as provided for in Article VI, Paragraph
C of the Agreement.

            The  Variable  Rate  shall be  added  to the  Base  Rate and paid by
Municipality in accordance with the terms of the Agreement.  For the period from
April 1, 1991 through June 30, 1991,  the Variable  Rate shall be $7.45 per ton.
The Variable Rate in respect of any calendar quarter commencing on or after July
1, 1991 shall be an amount per ton of Acceptable Waste equal to:

            1.    the initial Variable Rate of $7.45 per ton; plus

            2.    the  Pass-through  Costs  as  estimated  by  COMPANY  for such
                  quarter,  divided by the total tons of  Acceptable  Waste that
                  COMPANY estimates will be delivered in such quarter (except in
                  calculating  the  Change-in-Law  costs  and  Change in Rate of
                  Interest Cost, the denominator shall not include tonnage under
                  Spot Market  Contracts  originating  from outside the State of
                  Maine); plus

            3.    a reconciliation calculated as the difference between (i) the
                  amount in dollars corresponding to the Variable Rate component
                  of the total Tipping Fee that COMPANY was entitled to receive
                  from the Charter Municipalities in the previous quarter; and
                  (ii) the amount in dollars corresponding to the Variable Rate
                  component of the total Tipping Fee that is actually payable or
                  was paid to COMPANY from the Charter Municipalities in the
                  previous quarter, all divided by the tons of Acceptable Waste
                  that COMPANY estimates will be delivered by the Charter
                  Municipalities in the current quarter; minus

            4.    any adjustments for failure of the Facility to operate or to
                  meet the Performance Standards other than by reason of
                  Suspension of Operations, Force Majeure, or MUNICIPALITY
                  default; all


                                      -65-
   66

                  divided by the tons of Acceptable Waste that COMPANY estimates
                  will be delivered in such quarter; plus

            5.    any adjustments for Change-in-Law costs and Change in Rate of
                  Interest Cost, as converted to dollars per ton in accordance
                  with Section E below;

and where the amounts in items (2), (3) and (5) can be positive or negative.

            B. For purposes of calculating Section A(2) above, Pass-through
Costs shall be defined as the sum of the following:

                  (1) Changes in the cost of Residue  disposal.  The  difference
between (i) the sum of all fees,  costs,  expenses and liabilities  that COMPANY
estimates  it will incur or pay in respect of Residue  disposal for the calendar
quarter  (including but not limited to transportation  costs), and (ii) the base
amount for Residue disposal which is $368,188.

                  (2)  Changes  in the  cost of FEPR  disposal.  The  difference
between  (i) the sum of all fees,  costs,  and  expenses  and  liabilities  that
COMPANY  estimates  it will  incur or pay in respect  of FEPR  disposal  for the
calendar quarter  (including but not limited to transportation  costs), and (ii)
the base amount for FEPR disposal which is $526, 274.

            C. For purposes of calculating  Section A(4) above,  the adjustments
for failure to meet the Performance Standards (for reasons other than Suspension
of Operations, Force Majeure or MUNICIPALITY default) shall be calculated in the
first  quarter  of  each  Operating  Year on the  basis  of  performance  in the
preceding Operating Year. Such adjustments shall be defined as follows:

                  1. for failure to comply with the Residue Moisture Standard,
the actual costs of transportation and disposal associated with the excess tons.

                  2. for failure to comply with the Residue  Combustible Content
Standard and/or the Ferrous Quality Standard, the actual costs of transportation
and disposal for the excess tons associated with excess combustible material.


                                      -66-
   67

                  3. for failure to comply with the Residue Truck Loading
Standard and/or the FEPR Truck Loading Standard, the cost of transportation
associated with the excess shipments.

                  4. for failure to comply with both the Glass and Grit Quantity
and Quality Standards,  the actual costs of transportation and disposal, for the
excess tons provided  that no  adjustment  shall be made unless the Facility has
failed to comply with both standards.

            E. For purposes of the adjustments in Section A(5) above,
Changes-in-Law costs and Changes in Rate of Interest Costs shall be defined as
the sum of the following:

                  (1)  Change-in-Law  costs.  The  Change-in-Law  costs  for any
calendar quarter are the fees, costs,  expenses and liabilities paid or incurred
by COMPANY  during such calendar  quarter,  by reason of a  Change-in-Law  event
(including an allocated portion of capital  expenditures and direct quantifiable
additions to operating or maintenance  costs) but only as and to the extent such
fees,  costs,  expenses and  liabilities in respect of any  Change-in-Law  event
exceeds  $100,000   (whether  or  not  paid  in  any  calendar   quarter).   The
Change-in-Law  costs to be included in any  adjustments of the Variable Rate for
any  calendar  quarter  may  not  exceed  25%  of the  Tipping  Fee  payable  by
MUNICIPALITY for such calendar quarter (before giving effect to the inclusion of
the full amount thereof without reference to such limitation). Any Change-in-Law
costs which exceed the 25% cap in a particular calendar quarter shall be accrued
and be  included as and to the extent  permitted  by the  immediately  preceding
sentence in the next succeeding calendar quarter(s) in which such inclusion will
not be prohibited by such limitation.

            The amount of the  Change-in-Law  costs  which is not  received in a
calendar quarter by reason of such 25% limitation shall,  together with interest
on the unpaid and  unrecorded  amount  thereof at a rate per annum  equal to the
rate of interest  announced  by Bank of Boston or its  successor  as its base or
prime rate of interest plus 2% per annum on the unrecovered  amount thereof,  be
thereafter  treated as a  Change-in-Law  costs and  included in any  calculation
thereof until received in full. All calculations of Change-in-Law costs shall be
prepared  on the basis that  unpaid  amounts of  Change-in-Law  costs from prior
calendar quarters


                                      -67-
   68

are the first ones to be included and recovered and Change-in-Law  costs paid in
the  calendar  quarter in question  are the last to be included  and  recovered.
Notwithstanding  the foregoing,  such 25% limitation  shall not be applicable as
and to the extent that any Change-in-Law  costs paid or incurred in the calendar
quarter  would not be  recovered  by  amortizing  the amount  thereof on an even
calendar quarter basis (based on the number of remaining calendar quarters) over
the period ending March 31, 2018.

            In the event of a termination of this Agreement  whether by COMPANY,
pursuant to Article VIII or Article XIII or by MUNICIPALITY, pursuant to Article
XIII, or pursuant to Article XI,  MUNICIPALITY  shall be required to pay COMPANY
an amount equal to its pro-rata share (based on the then Guaranteed  Tonnage and
the Guaranteed  Annual Tonnage of all Charter  Municipalities)  of any remaining
balances of  Change-in-Law  costs at the effective date of any such  termination
which  have not been  recovered  prior to such  date;  provided,  however,  that
MUNICIPALITY  may at the effective date of such termination by written notice to
COMPANY  elect to pay any  such  amount  owing  by it  based on an even  monthly
amortization  of the  amount  thereof  over a period of up to  forty-eight  (48)
months as  MUNICIPALITY  shall  elect.  Any  amount to be  amortized  shall bear
interest at a rate per annual equal to the rate of interest announced by Bank of
Boston or its  successor as its base or prime rate of interest plus 2% and shall
be payable at the time each such monthly payment is made.

            (2)  Changes in Rate of Interest  cost.  Changes in Rate of Interest
cost to be paid by COMPANY to the  trustee of its  presently  outstanding  bonds
shall be an amount equal to the  aggregate  difference  between (i) the interest
expense of COMPANY to be paid or accrued in respect of the bonds as estimated by
COMPANY in respect of such calendar quarter,  and (ii) the interest expense that
would have been paid or accrued in  respect of the bonds  during  such  calendar
quarter at a 6.40% constant rate; provided, however, that the interest rate used
in making the  calculation  in clause  (i) shall in no event  exceed the rate of
8.00% per annum.  COMPANY will use its best efforts to fix the rate on the bonds
at a time and on a basis which is  mutually  agreeable  between  COMPANY and the
Municipal Review Committee the cost of which


                                      -68-
   69

fixing of  interest  rate  shall be paid by  Charter  Municipalities,  including
MUNICIPALITY,  as a  Pass-through  Cost,  in a  manner  which  is  agreeable  to
Municipal Review Committee and COMPANY.

            F.  COMPANY  will  certify to the  Municipal  Review  Committee  the
validity of quarterly  Pass-through  Costs and deliver to the  Municipal  Review
Committee  the  certificate  and the  quarterly  reconciliation  statement  with
accompanying  invoices and other  agreed-upon  documentation  within twenty (20)
days  after  the end of the  calendar  quarter  so  that  the  Municipal  Review
Committee can review the  reconciliation.  The Municipal  Review  Committee will
have twenty  (20) days from  receipt of the  statement  to accept or dispute the
reconciliation.  Unless the Municipal Review Committee files a written objection
to the  statement  with COMPANY  within  twenty (20) days of receiving the same,
setting  forth the basis for such  dispute,  such  statement  shall be final and
binding  on  all  parties,  including  MUNICIPALITY.  If  the  Municipal  Review
Committee files such written  objection,  the amount of the disputed items shall
not be  included  in Tipping  Fee  invoices,  but the  disputed  items  shall be
referred to binding arbitration for resolution as provided for in Article XXXII.
Adjustments to Pass-through Costs determined by resolution of the disputed items
shall be reflected in future invoices as referred to in paragraph A above.

            G. Annual  Projections of Tipping Fees. On or before September 15 of
each Operating  Year,  commencing  with the Operating Year beginning  January 1,
1992,  or on such  other date as shall be  mutually  acceptable  to COMPANY  and
MUNICIPALITY,  COMPANY shall use its best efforts to notify MUNICIPALITY and the
Municipal  Review  Committee of COMPANY's then estimate of the Base Rate per ton
and the Variable  Rate per ton, so that  MUNICIPALITY  may include in its budget
adequate  contingency  amounts to cover  potential  increases  in its  projected
Tipping Fees. Any such estimates shall not be binding on any of the parties.


                                      -69-
   70

                                   SCHEDULE D

      Procedure To Exercise Option To Purchase Facility under Article XVI,
                                   Paragraph A

            If  the  Municipal  Review  Committee,  on  behalf  of  the  Charter
Municipalities,  elects to purchase the  Facility as  permitted  and provided in
Article XVI, Paragraph A of this Agreement, the notice of exercise of the Option
shall  specify the date of the closing of the  transfer of title from COMPANY to
Charter  Municipalities or their designee,  which closing shall occur within 180
days of the date of the written notice given by the Municipal  Review  Committee
under Article XVI, Paragraph A. At closing, COMPANY shall convey the Facility by
quitclaim deed with covenant and bills of sale with warranty covenants, free and
clear of all liens and  encumbrances.  Any liens and encumbrances  including the
balances  of any unpaid  amounts  secured by the  mortgage to the trustee or any
provider  of credit  enhancement  or support  of bonds  providing  financing  or
refinancing of the Facility or any portion thereof,  together with all interest,
fees and costs due to the trustee and such providers  secured thereby,  shall be
paid in cash at closing.

            The condition contained in the preceding sentence is for the benefit
of both  parties  and may not be  waived  by any  party to this  Agreement.  The
parties  shall  make  appropriate  provisions  for  the  orderly  assumption  of
executory  contracts and  reconcile  real estate taxes and other such items on a
pro  rata  basis.  Unless  otherwise  agreed  prior  to  closing,   the  Charter
Municipalities  will not be acquiring  accounts  receivable or assuming accounts
payable of COMPANY.


                                      -70-
   71

                                   SCHEDULE E

                               Distributable Cash

            For the purpose of calculating  Performance  Credits  referred to in
Article  XVIII  of the  Agreement  for any  period,  amounts  used to  calculate
Distributable  Cash  shall be  determined  consistent  with  Generally  Accepted
Accounting  Principles  and shall be derived from the following  types of income
and expenses:

            (1) all amounts  received by COMPANY from Bangor Hydro in respect to
the sale of electricity to it during such period; provided, however, that to the
extent such funds  constitute  Equity  Reserves  (as  defined in Article  XVIII,
paragraph  B),  such  funds  and  any  investment   income  therefrom  shall  be
distributed  one-half (50%) to the Amending Charter  Municipalities and one-half
(50%)  to the  partners  in the  COMPANY  as of the  Closing  Date,  if and when
released to COMPANY;

            (2) all sums  received  by COMPANY  during such period in respect to
all Acceptable Waste delivered to COMPANY during such period;

            (3) all amounts received by COMPANY in respect of the sale by it of
recoverable materials, steam or byproducts during such period; and

            (4) all investment  income of COMPANY earned (other than earnings on
monies in accounts  maintained  pursuant to this Agreement,  the trust indenture
between the Finance Authority of Maine, or other issuer,  and the bond trustees,
existing credit or other  agreements  between COMPANY and any provider of credit
enhancement or support for the bonds) during such period.

            From the sum of the  amounts  and income set forth  above,  shall be
deducted the sum of all fees,  costs,  expenses and liabilities paid or incurred
by COMPANY in respect to such period including debt service,  amounts  deposited
into or credited to any account maintained pursuant to the trust indenture,  the
credit  agreements  between  COMPANY and any provider of credit  enhancement  or
support for the bonds, or this Agreement,  any plant management fee allocable to
COMPANY or bonus payments paid or incurred by COMPANY


                                      -71-
   72

pursuant to the operating agreement between COMPANY and ESOCO Orrington, Inc. or
any subsequent operating agreement.

            In the calculation of Distributable Cash, distributions to partners
of COMPANY in respect to any ownership interests in the partnership shall not be
considered to be a fee, a cost, an expense, or a liability. Further,
Distributable Cash shall not include:

            (1) any 1990 through March 31, 1991 interim  tipping fee payments or
any payments for this purpose made over time after March 31, 1991;

            (2) amounts received from borrowing or drawing-down of letters of
credit;

            (3) insurance or condemnation proceeds or awards;

            (4) amounts received in satisfaction of claims;

            (5) capital contributions and indemnity payments;

            (6) debt service  savings  (including  any  reductions  in letter of
credit or other credit  enhancement fees or commissions or any remarketing fees)
resulting  from  the  prepayment  of bonds or  other  borrowings  effected  with
payments made by Equity  Charter  Municipalities  under  Article XIX,  paragraph
(B)(5) of this Agreement; and

            (7) any other  amount  not  representing  revenues  received  in the
ordinary course of business  (including,  without  limitation,  withdrawals from
accounts  maintained  under the  trust  indenture,  credit  or other  agreements
between COMPANY and its lenders,  or this Agreement);  provided,  however,  that
funds, if any, remaining in the debt service reserve fund,  capital  improvement
reserve  fund and  operating  reserve fund  securing the bonds when  released to
COMPANY shall be Distributable Cash; provided,  further,  however, to the extent
such reserve  funds  constitute  Equity  Reserves (as defined in Article  XVIII,
paragraph  B),  such  funds  and  any  investment   income  therefrom  shall  be
distributed  one-half (50%) to the Amending Charter  Municipalities and one-half
(50%) to the partners in COMPANY as of the Closing Date, if and when released by
the Finance Authority of Maine or the trustee.


                                      -72-
   73

            Distributable  Cash shall be calculated in a manner  consistent with
the  description  below.  All  capitalized  terms not defined  elsewhere in this
Agreement  refer to specific line items in COMPANY's  profit and loss operations
statements  ("Operating P&L") as prepared monthly by COMPANY's controller in the
regular  course of  COMPANY's  financial  affairs  and  audited  annually  by an
independent accounting firm.

            1.    Start with Total Revenues.

            2.    Subtract the following summary line items:

                  a.    Total Fixed Expenses;
                  b.    Total Variable Expenses; and
                  c.    Total Non-Operating Income Expenses.

            3.    Add back the following individual line items:

                  a.    Depreciation; and
                  b.    Amortization.

            4.    Subtract the following:

                  a.    The principal paid on the outstanding bonds; and
                  b.    The amount of debt service savings resulting from the
                        prepayment  of bonds or other  borrowings  effected with
                        payments  made by Equity  Charter  Municipalities  under
                        Article XIX, paragraph (B)(5) of this Agreement.

            5.    Adjust for other cash and non-cash items and cash flow lags as
                  calculated  and  substantiated  by COMPANY and  otherwise  not
                  incorporated into the Operating P&L.

            In the event that COMPANY  changes the  definitions of line items on
its  Operating  P&L, it shall  inform the  Municipal  Review  Committee  of such
changes, and appropriate adjustments to the calculation described above shall be
made by mutual agreement.

            COMPANY  shall  submit its  calculation  of  Distributable  Cash and
Performance  Credits to the Municipal Review Committee within sixty (60) days of
the close of each calendar quarter and within thirty (30) days of the completion
of the  annual  independent  audit.  Quarterly  calculations  of the  amount  of
Distributable  Cash and  Performance  Credits  for a year  shall be  subject  to
adjustment  and  reconciled  with the  annual  audit.  Such  submittal  shall be
accompanied by the following:


                                      -73-
   74

            1. A certificate signed by COMPANY's  controller stating that he has
reviewed the  submittal  and the  calculations,  that the submittal is a correct
representation  of the matters set forth and was prepared  from data prepared in
accordance  with  Generally  Accepted  Accounting   Principles  consistent  with
COMPANY's  historical  operating  practices and in accordance  with the terms of
this Agreement;

            2. A certificate signed by an authorized officer of COMPANY that
COMPANY has complied with its obligations under this Agreement as they affect
the calculation of Performance Credits;

            3. Company Operating P&L for the period;

            4. A written statement setting forth the detailed calculation of the
Performance Credits;

            5. A written  statement  setting forth the tons of Acceptable  Waste
accepted from each Charter Municipality in the period.


                                      -74-
   75

                                   SCHEDULE F

                              Performance Standards

1.          THE RESIDUE MOISTURE STANDARD

            The  moisture  in the  Residue  as shipped  shall not  exceed  forty
            percent (40%) by weight on an annual basis. The annual average shall
            be the  simple  average  of the  results  of  analysis  of  compound
            samples.  The size of the  samples,  the  frequency  of sampling and
            sample  compounding  and the procedures for storing and  compounding
            samples in  waterproof  containers  shall be  established  by mutual
            agreement of COMPANY and the Municipal Review  Committee.  Protocols
            for analysis of the samples  shall be in  accordance  with  standard
            American  Society  for  Testing  and  Materials  (ASTM)  methods  or
            otherwise by mutual  agreement of COMPANY and the  Municipal  Review
            Committee.

2.          THE RESIDUE COMBUSTIBLE CONTENT STANDARD

            The percent  weight of the unburned  combustibles  in the Residue as
            measured by the percent LOI shall not exceed the Residue Combustible
            Content Standard on an annual average basis. The Residue Combustible
            Content  Standard  shall  be set for  1991 at nine  percent  (9%) by
            weight (dry),  and shall be adjusted for Operating  Years after 1991
            by mutual  agreement of COMPANY and the Municipal  Review  Committee
            using the results of analysis of compound samples taken during 1991.
            The size of the  samples,  the  frequency  of  sampling  and  sample
            compounding and the procedures for storing and  compounding  samples
            in waterproof containers shall be established by mutual agreement of
            COMPANY and the Municipal Review  Committee.  Protocols for analysis
            of the samples shall be in accordance  with standard ASTM methods or
            otherwise by mutual  agreement of COMPANY and the  Municipal  Review
            Committee.


                                      -75-
   76

3.          THE RESIDUE TRUCK LOADING STANDARD

            The annual  average net weight of shipments of Residue  shall not be
            less than twenty (20) tons per truck.  Net weights and the number of
            shipments  shall be  determined  on the  basis of  monthly  disposal
            invoices as verified for accuracy.

4.          THE FEPR TRUCK LOADING STANDARD

            The annual average net weight of shipments of FEPR (including  glass
            and grit, non-processible waste, and to the extent that its disposal
            costs are based on explicit  payments  for  transportation  on a per
            truck basis,  recovered  ferrous  materials)  shall not be less than
            twenty (20) tons per truck.  Net weights and the number of shipments
            shall be  determined  on the basis of monthly  disposal  invoices as
            verified for accuracy.

5.          THE FERROUS QUALITY STANDARD

            The higher heating value (HHV) of the recovered ferrous materials as
            measured  by the ratio of the BTUs of the free  combustibles  to the
            total weight of the recovered ferrous materials shall not exceed the
            Ferrous  Quality  Standard on an annual average  basis.  The Ferrous
            Quality Standard shall be set for 1991 at 940 BTU/lb on the basis of
            ten percent (10%) free  combustible  content by weight at an assumed
            HHV of 9400 BTU/lb,  and shall be adjusted for Operating Years after
            1991  by  mutual  agreement  of  COMPANY  and the  Municipal  Review
            Committee  using the results of analysis of compound  samples  taken
            during 1991. The size of the samples,  the frequency of sampling and
            sample  compounding  and the procedures for storing and  compounding
            samples in  waterproof  containers  shall be  established  by mutual
            agreement of COMPANY and the Municipal Review  Committee.  Protocols
            for analysis of the samples shall be in


                                      -76-
   77

            accordance  with  standard  ASTM  methods  or  otherwise  by  mutual
            agreement of COMPANY and the Municipal Review Committee.

6.          THE GLASS AND GRIT QUANTITY STANDARD

            The weight of the glass and grit shall not exceed twenty-six percent
            (26%) of the weight of all Acceptable Waste accepted at the Facility
            (including  nonprocessible waste) on an annual basis. The weights of
            the glass and grit and the  Acceptable  Waste shall be determined on
            the basis of monthly  disposal  invoices as verified for accuracy by
            COMPANY.

7.          THE GLASS AND GRIT QUALITY STANDARD

            The Glass and Grit Quality  Standard shall not be applicable  unless
            the  Facility  has not  complied  with the Glass  and Grit  Quantity
            Standard.  The HHV of the glass and grit  shall not exceed the Glass
            and Grit Quality  Standard on an annual average basis. The Glass and
            Grit-Quality  Standard  shall be set  initially  at 2088  BTU/lb and
            shall  be  adjusted  by  mutual  agreement  of the  COMPANY  and the
            Municipal Review Committee using the results of analysis of compound
            samples taken during 1991. The size of the samples, the frequency of
            sampling and sample  compounding  and the procedures for storing and
            compounding samples in waterproof containers shall be established by
            mutual  agreement  of COMPANY and the  Municipal  Review  Committee.
            Protocols for analysis of the samples  shall be in  accordance  with
            standard  ASTM methods or  otherwise by mutual  agreement of COMPANY
            and the Municipal Review Committee.


                                      -77-
   78

                                   SCHEDULE G

                                Type of Vehicles

            All vehicles depositing waste on the Facility tipping floor shall be
capable of discharging their loads mechanically. Included within the category of
vehicles  permitted to tip are:  standard  solid waste packer  trucks,  transfer
trailers and  hydraulic  dump  trucks.  In  addition,  all solid waste  vehicles
entering  the  Facility  shall have their loads  enclosed  within a container or
covered  securely by means of a tarp.  No pick-up  trucks,  so-called,  or other
vehicles which would require manual unloading,  either by design or by reason of
malfunction,  shall be permitted to  discharge  Acceptable  Waste on the tipping
floor.


                                      -78-
   79

                                   SCHEDULE H


                                    [Deleted]


                                      -79-
   80

                                  SCHEDULE H(1)


                                    [Deleted]


                                      -80-
   81

                                   SCHEDULE I


                                    [Deleted]


                                      -81-
   82

                                   SCHEDULE J

           Pending or Threatened Litigation or Governmental Proceeding

            1. [to come]

            _.  COMPANY  during  the  conduct of its  business  is  involved  in
numerous  governmental  proceedings and investigations  with respect to permits,
approvals and  administrative  matters relative to the ownership,  operation and
maintenance  of the  Facility  which,  if  adversely  determined,  could  result
adversely and affect COMPANY's ability to operate the Facility.



                  TO BE UPDATED, IF NECESSARY, PRIOR TO CLOSING


                                      -82-
   83

                                   SCHEDULE K


                                    [Deleted]


                                      -83-
   84

                 ACKNOWLEDGMENT OF BANGOR HYDRO-ELECTRIC COMPANY

            Bangor  Hydro-Electric  Company ("Bangor Hydro") hereby acknowledges
that it has  received  a copy of the  foregoing  Second  Amended,  Restated  and
Extended  Waste  Disposal  Agreement,  dated as of  ___________,  199_,  between
[Municipality] and Penobscot Energy Recovery Company,  Limited Partnership,  and
that the  references  to the Common  Stock  Warrant and  Registration  Agreement
contained  in Article  XII,  paragraph  E of the  Agreement  are  correct in all
material respects.

            IN WITNESS  WHEREOF,  Bangor  Hydro has  caused its duly  authorized
officer to execute this Acknowledgment as of the ____ day of ____________, 199_.

                                       BANGOR HYDRO-ELECTRIC COMPANY


                                       By /s/ Andrew Landry
                                          --------------------------------------
                                          Its General Counsel, Secretary & Clerk
                                          


                                      -84-
   85

        ACKNOWLEDGMENT AND AGREEMENT OF MUNICIPAL REVIEW COMMITTEE, INC.

            Municipal Review Committee,  Inc. (the "Municipal Review Committee")
hereby acknowledges receipt of a copy of the foregoing Second Amended,  Restated
and Extended Waste Disposal  Agreement,  dated as of ___________,  199_, between
[Municipality] and Penobscot Energy Recovery Company,  Limited Partnership,  and
hereby agrees to undertake and perform all duties and  responsibilities  imposed
upon it by the provisions thereof.

            IN WITNESS  WHEREOF,  the Municipal  Review Committee has caused its
duly authorized  officer to execute this  Acknowledgment and Agreement as of the
____ day of ____________, 199_.

                                       MUNICIPAL REVIEW COMMITTEE, INC.

                                                      By

                                       By Gerald Kempen
                                          --------------------------------------
                                          Its President


                                      -85-