EXHIBIT 10.20

                            ASSET PURCHASE AGREEMENT

            THIS ASSET PURCHASE  AGREEMENT (the  "Agreement") is dated
            as  of  December  31,  1996,  by  and  among  YOLO  ENERGY
            PARTNERS,  INC., an Indiana corporation  ("Seller"),  YOLO
            LANDFILL GAS CORPORATION,  a California corporation ("Yolo
            Gasco"),  EMCON, a California corporation ("Emcon"),  YOLO
            NEO LLC, a Delaware limited liability company ("NEO Yolo")
            and  Minnesota  Methane LLC, a Wyoming  limited  liability
            company ("Buyer").

         A. Seller is the owner of the lessee's  interest under a Commercial Gas
Production  Agreement dated June 18, 1985 (the "Production  Agreement") with the
County of Yolo, California,  as lessor,  pursuant to which the Seller is granted
the rights to collect,  process,  use and sell landfill gas and produce electric
power at the Yolo County Central Landfill in Yolo County, California.

         B. On April 22, 1988 certain of the rights and  responsibilities  under
the Production Agreement were delegated to and assumed by Yolo Gasco pursuant to
an amendment to the Production Agreement and the terms of a Delegation Agreement
between Seller and Yolo Gasco (the "Delegation Agreement").

         C.  Pursuant to the terms of the  Delegation  Agreement  Yolo Gasco has
caused to be  installed,  owned and operated  certain  landfill  gas  collection
wells, piping,  compressors and associated  equipment for the collection,  sale,
processing and sale to Seller of landfill gas (the "Gas Project").

         D.  Pursuant to the terms of the  Production  Agreement  the Seller has
acquired,  installed,  owned and operated certain electric generation  equipment
and  associated  rights,  permits,  contracts and other  authorizations  for the
production and sale of electric power (the "Electric Project").

         E. EMCON owns all of the issued and  outstanding  shares of Yolo Gasco.
EMCON also has provided services to Yolo Gasco for the operation and maintenance
of the landfill gas collection system owned by Yolo Gasco.

         F. In  1995,  Seller  entered  into an  agreement  with  Pacific  Gas &
Electric  Company  ("PG&E")  pursuant to which Seller agreed to terminate all of
its  rights  to sell  power to PG&E  from the Power  Project  (the  "Termination
Agreement").  The Termination  Agreement  includes certain other restrictions on
the sale of electric  power to PG&E by any  purchasers  of the Electric  Project
that may continue to utilize the electric power generation equipment at the Yolo
County Central Landfill.

         G.  Seller  desires to sell and Buyer  desires to buy the assets of the
Power Project for the purchase price and on the terms set forth herein.



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         H. Yolo Gasco desires to sell and NEO Yolo desires to buy the assets of
the Gas Project for the purchase price and on the terms set forth herein.

         I. As an inducement to NEO Yolo and Buyer to enter into this Agreement,
EMCON has agreed to provide its services at  attractive  rates for the operation
and maintenance of the landfill gas collection system in connection with the Gas
Project to be acquired by NEO Yolo.

         J. In order to settle all claims that may exist  between Yolo Gasco and
the Seller,  the Seller and Buyer have agreed upon the terms of a settlement  of
such claims  which  settlement  will be a condition  precedent to the closing of
this transaction.

         NOW,  THEREFORE,  in  consideration  of the foregoing and of the mutual
agreements herein contained, the parties hereto agree as follows:

         1.  PURCHASE  AND SALE OF  ELECTRIC  PROJECT  ASSETS.  On the terms and
subject to the conditions set forth in this  Agreement,  Seller hereby agrees to
sell, assign, convey,  transfer and deliver to Buyer, and Buyer hereby agrees to
purchase from Seller,  on a going concern basis,  all of the assets and business
properties of every kind and description,  wherever located,  personal or mixed,
tangible  and  intangible,  owned or held by Seller  and used or held for use in
connection  with the Electric  Project  (collectively,  the "Electric  Assets"),
including,  without  limitation,  all right, title and interest of Seller in, to
and under:

             (a)  All  raw  materials,  supplies,  work-in-process,   and  other
materials  included  in the  inventory  of the  Electric  Project or  including,
without limitation, such items that have been ordered by Seller but have not yet
been received by Seller;

             (b) All of the real estate and personal  property leases listed and
described in Schedule 1(b) attached hereto  (collectively  the "Electric Project
Assumed Leases");

             (c) All machinery and equipment, vehicles, furniture, fixtures, and
other personal  property  owned by Seller and used or useful in connection  with
the  Electric  Project  including,  without  limitation,  the  items  listed  or
described on Schedule 1(c) attached hereto;

             (d) The contracts, agreements or understandings listed or described
on Schedule 1(d) attached hereto  (collectively,  the "Electric  Project Assumed
Contracts");

             (e) All of the  permits,  licenses  and  authorizations  listed  or
described on Schedule 1(e) attached hereto (collectively,  the "Electric Project
Permits");

             (f) All customer  lists,  processes,  trade  secrets,  know how and
other proprietary or confidential information used in or related to the Electric
Project (but excluding privileged attorney-client communications,  attorney work
product and such other confidential  information as would ordinarily fall within
the category of "privileged" material for purposes of discovery in general civil
litigation in California's state or federal courts);

             (g) All  trademarks  and trade names  associated  with the Electric
Project (the "Goodwill");

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             (h) All of  Seller's  rights,  claims or  causes of action  against
third parties related to the assets,  properties,  business or operations of the
Electric  Project  arising out of  transactions  occurring  prior to the Closing
Date; and

             (i) Copies of all books and records  which  copies shall be made at
Buyer's expense to the extent such cost exceeds $200.

         2.  PURCHASE  AND SALE OF THE GAS  PROJECT  ASSETS.  On the  terms  and
subject to the conditions set forth in this Agreement,  Yolo Gasco hereby agrees
to sell, assign,  convey,  transfer and deliver to NEO Yolo, and NEO Yolo hereby
agrees to purchase from Yolo Gasco, on a going concern basis,  all of the assets
and  business  properties  of every  kind  and  description,  wherever  located,
personal or mixed, tangible or intangible,  owned by Yolo Gasco and used or held
for use in connection  with the Gas Project  (collectively,  the "Gas  Assets"),
excluding cash and accounts receivable,  but including,  without limitation, all
right, title and interest of Seller in, to and under:

             (a)  All  raw  materials,  supplies,  work-in-process,   and  other
materials  included in the  inventory  of the Gas  Project,  including,  without
limitation,  such  items  that have been  ordered by Yolo Gasco but have not yet
been received by Yolo Gasco;

             (b) All of the real estate and personal  property leases listed and
described  in Schedule  2(b)  attached  hereto  (collectively  the "Gas  Project
Assumed Leases");

             (c) All machinery and equipment and other  personal  property owned
by Yolo Gasco and exclusively used in connection with the Gas Project including,
without  limitation,  the items listed or described  on Schedule  2(c)  attached
hereto;

             (d) The contracts, agreements or understandings listed or described
on  Schedule  2(d)  attached  hereto  (collectively,  the "Gas  Project  Assumed
Contracts");

             (e) All of the  permits,  licenses  and  authorizations  listed  or
described  on Schedule  2(e)  attached  hereto  (collectively,  the "Gas Project
Permits");

             (f) All customer  lists,  processes,  trade  secrets,  know-how and
other proprietary or confidential  information exclusively used in or related to
the  Gas  Project  (but  excluding  privileged  attorney-client  communications,
attorney  work  product  and  such  other  confidential   information  as  would
ordinarily  fall within the  category of  "privileged"  material for purposes of
discovery in general civil litigation in California's state or federal courts);

             (g) All  trademarks and trade names of Yolo Gasco  associated  with
the Gas Project (the "Goodwill");

             (h) All of Yolo Gasco's rights,  claims or causes of action against
third parties related to the assets,  properties,  business or operations of the
Gas Project arising out of transactions occurring prior to the Closing Date; and

             (i) Copies of all books and records,  which copies shall be made at
NEO Yolo's expense to the extent such cost exceeds $200.

         3. PURCHASE PRICE FOR ELECTRIC PROJECT. On the terms and subject to the
conditions set forth in this Agreement, and in


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consideration of the sale, conveyance,  assignment, transfer and delivery of the
Electric Assets,  Buyer agrees to deliver at Closing good funds in the amount of
$550,000 as the purchase price for the Electric  Assets (the  "Electric  Project
Purchase  Price").  As a condition to the Closing,  Buyer shall pay the Electric
Project Purchase Price, and shall also pay certain other amounts,  in accordance
with the following provisions:

             (a) On the terms and  subject to the  conditions  set forth in this
Agreement,  including, without limitation, Section 3(b) below, upon the Closing,
Buyer  agrees to assume and  discharge  the  liabilities  of Seller set forth on
Schedule l(b) attached hereto. All of the foregoing  liabilities and obligations
of Seller to be assumed by Buyer  pursuant to this  Section 3(a) are referred to
as the "Electric Project Assumed Liabilities".

             (b) Buyer  expressly  does not  assume and does not agree to assume
any  liability or obligation  of Seller,  direct or indirect,  known or unknown,
absolute or contingent,  not expressly assumed by Buyer pursuant to Section 3(a)
and,  notwithstanding  anything  to the  contrary in Section  3(a),  none of the
following  shall be Electric  Project  Assumed  Liabilities for purposes of this
Agreement:

                 (i) any income taxes (including foreign, federal, state, county
or local) of Seller or Yolo Gasco;

                 (ii) any costs and expenses  incurred by Seller incident to its
negotiation  and  preparation  of this  Agreement  and the  consummation  of the
transactions  contemplated  herein  (it being  understood  that  such  costs and
expenses are being and will be paid by Seller);

                 (iii) any  liability  under any  insurance,  pension,  deferred
compensation or any other employee benefit plan including any claim or liability
to make any  contribution  to any such  plan  relating  to the  period  prior to
Closing;

                 (iv) any sales,  use or transfer  taxes,  if any, in connection
with this transaction,  any tax liability of Yolo Gasco or Seller resulting from
the  transactions  contemplated  herein,  including,   without  limitation,  any
recapture by Seller of investment tax credit or  depreciation;  (v) any claim or
liability  the  existence  of which  would  constitute  a  breach  of any of the
representations of Seller hereunder  (provided,  however,  that the existence of
any such claim or liability  shall not give rise to, or create an inference with
respect to, any  independent  basis for  asserting or  initiating  any claim for
damages for breach of any representation of Seller hereunder); and

                 (vi)  any  debt,   liability  or  obligation  of  Seller,   its
shareholders,  or any one of them,  other  than  the  Electric  Project  Assumed
Leases.

             (c) Buyer  expressly  does not  assume and does not agree to assume
any  income,  business,  occupation,  employment,  withholding,  sales  and use,
personal property or real estate tax,  assessment or governmental  charge or any
other tax, assessment or governmental charge of any kind related to the Electric
Project or the Electric Assets for any period ending prior to or on the Closing;
provided,   however,   Buyer  does  expressly   assume  taxes,   assessments  or
governmental  charges,  if any, which accrue or relate to a period subsequent to
the Closing as a result of Buyer's ownership, operation, sale or transfer of the
Electric Project or the Electric Assets subsequent to the Closing or as provided
elsewhere herein.

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             (d) The purchase  price for the Electric  Assets shall be allocated
as set forth on Schedule 3(d) attached hereto.

         4. Purchase Price for Gas Project  Assets.  On the terms and subject to
the conditions set forth in this Agreement,  and in  consideration  of the sale,
conveyance,  assignment, transfer and delivery of the Gas Assets, at the Closing
NEO Yolo  agrees to deliver at Closing  good funds in the amount of  $250,000 as
the purchase price for the Gas Assets (the "Gas Project Purchase  Price").  As a
condition to the Closing, Buyer shall pay the Gas Purchase Price, and shall also
pay certain other amounts, in accordance with the following provisions:

             (a) On the terms and  subject to the  conditions  set forth in this
Agreement,  including, without limitation, Section 4(b) below, upon the Closing,
NEO Yolo agrees to assume and discharge the  liabilities of Yolo Gasco set forth
on  Schedule  2(b)  attached  hereto.  All  of  the  foregoing  liabilities  and
obligations  of Yolo Gasco to be assumed by NEO Yolo  pursuant  to this  Section
4(a) are referred to as the "Gas Project Assumed Liabilities".

             (b) NEO Yolo expressly does not assume and does not agree to assume
any liability or obligation of Yolo Gasco, direct or indirect, known or unknown,
absolute or  contingent,  not expressly  assumed by NEO Yolo pursuant to Section
4(a) and,  notwithstanding anything to the contrary in Section 4(a), none of the
following  shall  be Gas  Project  Assumed  Liabilities  for  purposes  of  this
Agreement:

                 (i) any income taxes (including foreign, federal, state, county
or local) of Seller or Yolo Gasco;

                 (ii) any costs and expenses  incurred by Yolo Gasco incident to
its negotiation  and  preparation of this Agreement and the  consummation of the
transactions  contemplated  herein  (it being  understood  that  such  costs and
expenses are being and will be paid by Yolo Gasco);

                 (iii) any  liability  under any  insurance,  pension,  deferred
compensation or any other employee benefit plan including any claim or liability
to make any  contribution  to any such  plan  relating  to the  period  prior to
Closing;

                 (iv) any sales,  use or transfer  taxes,  if any, in connection
with this transaction,  any tax liability of Yolo Gasco or Seller resulting from
the  transactions  contemplated  herein,  including,   without  limitation,  any
recapture by Yolo Gasco of investment tax credit or depreciation;

                 (v) any  claim  or  liability  the  existence  of  which  would
constitute  a  breach  of any of the  representations  of Yolo  Gasco  hereunder
(provided,  however, that the existence of any such claim or liability shall not
give rise to, or create an inference with respect to, any independent  basis for
asserting or initiating  any claim for damages for breach of any  representation
of Yolo Gasco hereunder); and

                 (vi) any debt,  liability  or  obligation  of Yolo  Gasco,  its
shareholders,   or  any  one  of  them,  other  than  the  Gas  Project  Assumed
Liabilities.

             (c) NEO Yolo expressly does not assume and does not agree to assume
any  income,  business,  occupation,  employment,  withholding,  sales  and use,
personal property or real estate tax,  assessment or governmental  charge or any


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other tax,  assessment  or  governmental  charge of any kind  related to the Gas
Project  or the Gas Assets for any  period  ending  prior to or on the  Closing;
provided,  however,  NEO Yolo does expressly  assume,  taxes,  assessments,  and
governmental  charges,  if any, which accrue or relate to a period subsequent to
the Closing as a result of NEO Yolo's ownership,  operation, sale or transfer of
the Gas Project or the Gas Assets subsequent to the Closing.

         5. CLOSING.  The purchase and sale of the Gas Assets and the Electrical
Assets (the "Closing")  shall take place at the offices of Poindexter & Doutre',
Inc., at 10:00 a.m. local time on December 13, 1996, (the "Closing Date"), or at
such other place and time as the parties may mutually agree.

             (a) Deliveries by Seller. At or prior to the Closing,  Seller shall
deliver to Buyer,  in a form  reasonably  satisfactory  to Buyer,  the following
items:

                 (i) A bill of sale and  assignment in the form attached  hereto
as Schedule 5(a)(i), duly executed by Seller,  conveying all of Seller's rights,
title and  interest in and to all of the Electric  Assets to Buyer,  to the full
extent of Seller's interest in the Electric Assets;

                 (ii)  An  assignment  and  assumption  agreement  in  the  form
attached  hereto as Exhibit  5(a)(ii),  duly executed by Seller,  and such other
assignment  agreements as are necessary to transfer,  assign,  and convey all of
Seller's right, title, and interest in and to all leases, agreements, contracts,
licenses, permits, orders and other Electric Assets which constitute an Electric
Project Assumed Lease, an Electric  Project Assumed Contract or Electric Project
Permit;

                 (iii) Such other instruments of sale, conveyance,  transfer and
assignment as Buyer may  reasonably  request,  duly  executed by Seller,  as are
necessary to vest in Buyer as of the Closing all of Seller's  rights,  title and
interest  in and to all of the  Electric  Assets to the full  extent of Seller's
interest in the Electric Assets; and

                 (iv) A duly  certified  copy of  resolutions  of the  Board  of
Directors and shareholders of Seller  authorizing the transactions  that are the
subject of this Agreement.

                 (v) A  duly  executed  Certificate  of  Seller  certifying  the
accuracy of  Seller's  representations  contained  in this  Agreement  as of the
Closing Date and Seller's  compliance  with, and  fulfillment of, all covenants,
agreements, obligations and conditions as required by this Agreement.

                 (vi)  Opinion of Sommer & Barnard,  P.C.,  counsel  for Seller,
dated the Closing Date and in the form attached hereto as Exhibit 5(a) (vi).

                 (vii) Signed  consents or approvals by third  parties set forth
in Schedule 6(c).

                 (viii) A power  purchase  agreement  on Form  Standard  Offer 1
between  Southern  California  Edison  and Buyer with  respect  to the  Electric
Project on terms satisfactory to Buyer.

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                 (ix)  A  transmission  and  interconnection  agreement  between
Pacific  Gas and  Electric  Company  and Buyer with  respect to the  delivery of
electric power from the Electric Project to Southern  California Edison on terms
satisfactory to Buyer.

In connection with the foregoing  deliveries,  on the Closing Date, Seller shall
deliver full possession and enjoyment of all of the Electric Assets to Buyer, to
the full extent of Seller's interest therein,  in accordance with the provisions
of this Agreement. Seller shall cooperate with Buyer after the Closing and shall
execute  and  deliver  such  additional   documents  or  instruments  which  are
reasonably  necessary to sell,  convey,  transfer or assign Seller's interest in
the Electric Assets to Buyer.

             (b)  DELIVERIES BY BUYER.  At or prior to the Closing,  Buyer shall
deliver to Seller,  in form  reasonably  satisfactory  to Seller,  the following
items:

                 (i) Good funds in the amount of $550,000;

                 (ii)  An  assignment  and  assumption  agreement  in  the  form
attached hereto as Exhibit 5(a)(ii),  duly executed by Buyer,  pursuant to which
Buyer  assumes  and agrees to  discharge  all of the  Electric  Project  Assumed
Liabilities;

                 (iii) A duly  certified  copy of resolutions of the Managers or
Members of Buyer authorizing the transactions contemplated by this Agreement;

                 (iv) A duly  executed  Certificate  of  President or Manager of
Buyer  certifying  the  accuracy  of  Buyer's   representations  and  warranties
contained in this Agreement and Buyer's compliance with, and fulfillment of, all
covenants, agreements, obligations and conditions as required by this Agreement;

             (c)  DELIVERIES  BY YOLO GASCO.  At or prior to the  Closing,  Yolo
Gasco shall deliver to NEO Yolo, in a form reasonably  satisfactory to NEO Yolo,
the following items:

                 (i) A bill of sale and  assignment in the form attached  hereto
as Exhibit 5(c)(i),  duly executed by Yolo Gasco,  conveying all of Yolo Gasco's
rights,  title and interest in and to all of the Gas Assets to NEO Yolo,  to the
full extent of Yolo Gasco's interest in the Gas Assets;

                 (ii)  An  assignment  and  assumption  agreement  in  the  form
attached hereto as Exhibit 5(c)(ii), duly executed by Yolo Gasco, and such other
assignment  agreements as are necessary to transfer,  assign,  and convey all of
Yolo  Gasco's  right,  title  and  interest  in and to all  leases,  agreements,
contracts, licenses, permits, orders and other Gas Assets which constitute a Gas
Project Assumed Lease, a Gas Project Assumed Contract or a Gas Project Permit;

                 (iii) Such other instruments of sale, conveyance,  transfer and
assignment as NEO Yolo may reasonably  request,  duly executed by Yolo Gasco, as
are necessary to vest in NEO Yolo as of the Closing all of Yolo Gasco's  rights,
title  and  interest  in and to all of the Gas  Assets  to the  full  extent  of
Seller's interest in the Gas Assets;

                 (iv) A certified  copy of resolutions of the Board of Directors
and Shareholder of Yolo Gasco  authorizing the transactions that are the subject
of this Agreement.

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                 (v) A duly  executed  Certificate  of  President  of Yolo Gasco
certifying  the  accuracy  of Yolo  Gasco's  representations  contained  in this
Agreement  as of  the  Closing  Date  and  Yolo  Gasco's  compliance  with,  and
fulfillment  of,  all  covenants,  agreements,  obligations  and  conditions  as
required by this Agreement.

         In connection with the foregoing deliveries,  on the Closing Date, Yolo
Gasco shall  deliver full  possession  and enjoyment of all of the Gas Assets to
NEO Yolo to the full extent of Yolo Gasco's interest therein, in accordance with
the provisions of this Agreement. Yolo Gasco shall cooperate with NEO Yolo after
the  closing  and  shall  execute  and  deliver  such  additional  documents  or
instruments which are reasonably  necessary to sell, convey,  transfer or assign
Yolo Gasco's interest in the Gas Assets to NEO Yolo.

             (d)  Deliveries by NEO Yolo.  At or prior to the Closing,  NEO Yolo
shall deliver to Yolo Gasco,  in a form  reasonably  satisfactory to Yolo Gasco,
the following items:

                 (i) Good funds in the amount of $250,000;

                 (ii)  An  assignment  and  assumption  agreement  in  the  form
attached  hereto as Exhibit  5(c)(ii),  duly  executed by NEO Yolo,  pursuant to
which NEO Yolo  assumes and agrees to discharge  all of the Gas Project  Assumed
Liabilities;

                 (iii) A duly  certified  copy of  resolution  of the manager or
members of NEO Yolo authorizing the transactions contemplated by this Agreement;

                 (iv) Consents,  waivers,  settlement and termination agreements
and such other documents duly executed by other third parties listed on Schedule
3(b)(iv),  as are reasonably  required for the  consummation of the transactions
contemplated by this Agreement;

                 (v) An agreement of  indemnification by NEO Yolo in the form of
Exhibit 5(c)(v) of Yolo Gasco and EMCON for liabilities, costs and expenses that
arise after the Closing Date for actions by NEO Yolo for actions taken after the
Closing Date that relate to the Gas Project.

                 (vi) A duly executed  Certificate of the President or a Manager
or Member of NEO Yolo certifying the accuracy of NEO Yolo's  representations and
warranties  contained in this  Agreement  and NEO Yolo's  compliance  with,  and
fulfillment  of,  all  covenants,  agreements,  obligations  and  conditions  as
required by this Agreement.

         6.  REPRESENTATIONS  AND  WARRANTIES OF SELLER.  Seller  represents and
warrants to Buyer the following  (both as of the Closing Date and as of the date
hereof):

             (a)  DUE  CORPORATE  FORMATION  AND  QUALIFICATION.   Seller  is  a
corporation  duly organized and validly  existing under the laws of the State of
Indiana,  and is qualified to do business in the State of California and has the
power and lawful authority to carry on its business as now being conducted,  and
to own or lease and operate its  properties  and assets as now owned,  leased or
operated by it. To the best  knowledge  and belief of the Seller,  the Seller is
not required to be licensed or qualified as a foreign  corporation  in any other
jurisdiction  other than the State of California except where a failure to be so
qualified would have a material  adverse effect upon the business of the Seller.
Seller has no subsidiaries  and does not own any securities  issued by any other
business organization or governmental authority. Seller does not own or have any
direct  or  indirect  interest  in  or  control  over  any  other   corporation,
partnership, joint venture or entity of any kind.

             (b)  CORPORATE   AUTHORIZATION  OF  SELLER.  The  Seller  has  full
corporate  power and  authority to execute and deliver this  Agreement  and each
agreement,  document and instrument executed and delivered by Seller pursuant to
this  Agreement and to consummate  the  transactions  contemplated  hereby,  and
assuming due  authorization,  execution  and  delivery of this  Agreement by the
Buyer, Yolo Gasco and NEO Yolo, this Agreement and each agreement,  document and
instrument   executed  and  delivered  by  Seller  pursuant  to  this  Agreement
constitutes  the valid and  binding  obligation  of the  Seller  enforceable  in
accordance  with its  terms,  except  that such  enforcement  may be  subject to
bankruptcy, insolvency, reorganization,  moratorium or other similar laws now or
hereafter in effect relating to creditors rights


                                       85


generally  and the remedy of specific  performance  and other forms of equitable
relief may be subject to equitable  defenses and to the  discretion of the court
before which any proceeding therefor may be brought.

             (c)  AUTHORITY  OF THE  SELLER.  Except  as set  forth in  Schedule
attached  hereto,  to the best  knowledge and belief of the Seller,  no consent,
authorization or approval of, or declaration,  filing or registration  with, any
governmental,  administrative or regulatory body, or any consent,  authorization
or approval of any other third party, is necessary in order to enable the Seller
to  enter  into  and  perform  its  obligations  under  this6  Agreement  and to
consummate the transactions  contemplated hereby, and, to the best knowledge and
belief of the Seller,  neither the execution and delivery of this  Agreement nor
the consummation of the transactions contemplated hereby will:

                 (i) be in violation of the articles of incorporation or code of
bylaws of the Seller or constitute a breach of any evidence of  indebtedness  or
agreement relating to the business to which the Seller is a party;

                 (ii)  cause a default  under any  mortgage  or deed of trust or
other lien, charge or encumbrance to which any of the Electric Assets is subject
or under any contract relating to the Seller's business to which the Seller is a
party, or permit the termination of any such contract by another person;

                 (iii)  result in the  creation or  imposition  of any  security
interest,  lien,  charge or other  encumbrance  upon any of the Electric  Assets
under any agreement or commitment to which the Seller is bound;

                 (iv)  accelerate,  or constitute an event  entitling,  or which
would,  on  notice  or  lapse  of time  or  both,  entitle,  the  holder  of any
indebtedness of the Seller to accelerate the maturity of any such indebtedness;

                 (v)  conflict  with  or  result  in the  breach  of  any  writ,
injunction or decree of any court or governmental instrumentality; or

                 (vi)  violate any  statute,  law,  regulation,  permit order or
other  governmental  authorization  of any  jurisdiction  as such statute,  law,
regulation,  permit,  order or other governmental  authorization  relates to the
properties of the Electric Project.

             (d) FINANCIAL  STATEMENTS  AND TAX RETURNS.  Seller has  heretofore
furnished  the Buyer with the balance  sheet of Seller  dated  December 31, 1994


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(the "Seller  Balance  Sheet  Date"),  together  with the statement of earnings,
stockholders  equity and cash flow of Seller for the twelve-month  period ending
December  31,  1994 and for the two  years  ending  December  31,  1992 and 1993
(collectively,  the  "Seller  Financial  Statements").   Copies  of  the  Seller
Financial  Statements are attached hereto as Schedule 6(d).  Except as otherwise
indicated in the Seller Financial  Statements,  to the best knowledge and belief
of  Seller,  the  Seller  Financial  Statements  have  been  prepared  utilizing
generally  accepted  accounting  principles  consistently  applied.  Seller  has
furnished to Buyer true and correct  copies of its federal and state tax returns
and all amendments thereto for the years 1992, 1993 and 1994.

             (e) ABSENCE OF  UNDISCLOSED  LIABILITIES.  All  liabilities  of the
Seller with respect to the Seller's  business and the Electric  Assets  (whether
accrued, absolute, contingent or otherwise and whether due or to become due) are
set forth or adequately  reserved against in the Seller Financial  Statements in
accordance with generally accepted accounting principles, except for liabilities
set forth on Schedule 6(e) attached hereto and except for  liabilities  incurred
since the  Seller  Balance  Sheet Date in the  ordinary  course of  business  as
therefore conducted.

             (f) TITLE TO PROPERTIES;  ENCUMBRANCES.  Except as reflected in the
Seller  Financial  Statements,  and except for assets and properties  which have
been sold or  otherwise  disposed of in the  ordinary  course of  business,  the
Seller has good,  valid and  marketable  title (except for leasehold  interests,
rights  pursuant to  easements,  licenses and other  interests of third  parties
specifically  set forth on any  Schedule  annexed  hereto)  to all its  material
tangible and intangible personal  properties and assets,  including all tangible
and  intangible  personal  properties  and assets,  which are included among the
Electric  Assets  reflected in the Seller  Financial  Statements,  and all other
tangible and intangible personal properties and assets, which are included among
the Electric  Assets,  purchased by the Seller  since the Seller  Balance  Sheet
Date, in each case subject to no encumbrance,  lien, charge or other restriction
of any kind or  character,  except  for (i)  consisting  of zoning  or  planning
restrictions,  easements,  permits and other  restrictions or limitations on the
use of real or tangible or intangible  personal  property which are described in
Schedule 6(f) attached  hereto,  (ii) liens for current  taxes,  assessments  or
governmental  charges or levies on property not yet due and delinquent and (iii)
liens,  encumbrances  and easements under the contracts and agreements which are
included among the Electric Assets and which are specifically  identified on any
Schedule  annexed  hereto (liens of the type  described in clause (i), (ii), and
(iii) above are hereinafter sometimes referred to as "Electric Project Permitted
Liens"),  and (iv) the liens or other  encumbrances  set forth on Schedule  6(f)
attached hereto.

             (g) COMPLIANCE WITH LAWS.  Except as set forth on Schedule attached
hereto, to the Seller's best knowledge and belief,  with respect to the Seller's
business, (i) Seller has received no notice from any governmental authority that
it is in violation of applicable laws and  regulations,  and (ii) Seller has not
received any  notification of past  violations of such laws or regulations  that
could  reasonably be expected to result in future material claims against it. To
the best knowledge and belief of the Seller, set forth on Schedule 6(g) attached
hereto is a list of all of the Seller's licenses,  permits, orders and approvals
of any  federal,  state or local  governmental  or  regulatory  bodies  that are
material to or necessary for the conduct of the Seller's business  (collectively
"Electric Project Permits"). To the best knowledge and belief of the Seller, all
Electric  Project  Permits  are in full force and effect  and no  proceeding  is
pending or threatened to revoke or limit any Electric Project Permit.

             (h)  LITIGATION.  Except as set  forth on  Schedule  6(h)  attached
hereto,  there are no  actions,  suits or claims,  or legal,  administrative  or


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arbitral  proceedings  or  investigations  pending or, to the best knowledge and
belief of the Seller,  threatened  against or involving the Seller or any of its
properties  or  assets  with  respect  to the  Seller's  business.  To the  best
knowledge  and  belief  of the  Seller,  none  of the  actions,  suits,  claims,
proceedings or investigations set forth on Schedule 6(h), individually or in the
aggregate,  can reasonably be expected to have a material  adverse effect on the
Electric Project.

             (i)  POWER  PURCHASE  AGREEMENTS.  Seller  has  delivered  true and
correct copies of the termination  agreement and any amendments  thereto entered
into between  Seller and PG&E.  Schedule 6(i) sets forth a list of all documents
and  agreements  between  Seller  and PG&E  that have or could  have a  material
adverse effect on the Electric  Project or on the use of the Electric  Assets at
the Yolo County Central  Landfill,  copies of which documents have been provided
to Buyer.

             (j) CONTRACTS AND OTHER  AGREEMENTS.  Schedule 6(j) attached hereto
contains a complete  and accurate  list of all of the  following  contracts  and
other  agreements with respect to the Electric  Project to which the Seller is a
party or by or to which it or its assets or properties are bound or subject;

                 (i) contracts and other  agreements  with any current or former
officer,  director,  or employee  not  cancelable  without  penalty on notice of
thirty (30) days or less;

                 (ii) contracts and other agreements with material  suppliers of
products sold or leased by Seller in the normal course of the Seller's business;

                 (iii) contracts and other agreements  relating to the borrowing
of money including any indenture,  mortgage, promissory note, loan agreement, or
guaranty;

                 (iv) operations and maintenance  agreements with respect to the
Electric Project;

                 (v) any  water  supply  agreement  or any other  agreement  for
condensate or other liquid disposal; and

                 (vi) any other  contract  or other  agreement  which the Seller
reasonably  believes  is  material  to the  Electric  Project  (other than those
reflected  on any of the other  Schedules  to this  Agreement).  There have been
delivered or made available to the Buyer true and complete  copies of all of the
contracts  and  other  agreements  set  forth on  Schedule  6(j) or on any other
Schedule attached hereto. To the best knowledge and belief of the Seller, all of
such  contracts  and other  agreements  are valid and binding upon the Seller in
accordance  with their terms,  and,  except as set forth on Schedule  6(c),  the
Seller is not in material default under any such contracts.

         (k) REAL ESTATE LEASES. Schedule 6(k) attached hereto sets forth a list
and summary description of all leases, subleases,  easements,  licenses or other
agreement under which the Seller is the lessor or lessee of, or uses or occupies
or allows the use or occupancy  of, any real  property  (the "Seller  Leases and
Easements"). All of the Seller Leases and Easements, true and complete copies of
which have been delivered or made available to the Buyer,  are in effect and, to
the best  knowledge  and belief of the  Seller,  the  Seller is not in  material
default  under or with respect to any of the Seller  Leases or Easements nor has
the Seller  received or sent any notice of any default  under or with respect to


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any of the same. To the best knowledge and belief of the Seller,  no other party
to any of the Seller Leases and  Easements is in material  default under or with
respect to any of the same.

             (l) ACCOUNTS AND NOTES RECEIVABLE. To the best knowledge and belief
of the  Seller,  all  accounts  receivable  reflected  on the  Seller  Financial
Statements, and all accounts receivable arising subsequent to the Seller Balance
Sheet Date and prior to the Closing  Date,  have arisen,  or will have arisen at
the  Closing  Date,  in the  ordinary  course  of  business  of the  Seller  and
represent, or will represent, valid obligations due to the Seller and subject to
no set off and counterclaim.  Seller has no account or loans receivable from any
person,  firm or  corporation  which  is  affiliated  with  Seller  or from  any
director, officer or employee of Seller.

             (m) INTELLECTUAL PROPERTY. Schedule 6(m) attached hereto sets forth
a list of all patents, trade secrets,  proprietary rights,  trademarks,  service
marks and trade names (collectively, "Intellectual Property") that relate to the
Seller's  business.  Except as set forth on Schedule 6(m), to the best knowledge
and belief of the Seller, all Intellectual Property is owned outright by Seller,
free and clear of any lien or  encumbrance  and  except as so set  forth,  there
exist no obligations  with respect to any  Intellectual  Property  requiring the
Seller to make any  payment in respect  of its use or  otherwise.  Except as set
forth on Schedule  6(m),  to the best  knowledge  and belief of the Seller,  the
Seller has no notice of any patent, trademark, service mark or trade name of any
other person that  infringes  upon, or is infringed upon by, any of the property
set forth on Schedule  6(m) or notice of any claim of any other person  relating
to any of the property set forth or any process or  confidential  information of
the Seller.  Seller's  rights in all of such  Intellectual  Property  are freely
transferable.

             (n) BROKER'S OR FINDER'S  FEES.  No agent,  broker,  person or firm
acting on behalf of the Seller is, or will be,  entitled  to any  commission  or
broker's or finder's  fees from any of the  parties  hereto,  or from any person
controlling,  controlled  by or under  common  control  with any of the  parties
hereto, in connection with any of the transactions contemplated herein.

             (o) EMPLOYEE BENEFIT PLANS.

                 (i) Schedule  6(o) attached  hereto lists all employee  benefit
plans, as defined in Section 3(3) of the Employee Retirement Income Security Act
of 1974, as amended  ("ERISA"),  and all bonus,  stock option,  stock  purchase,
incentive, deferred compensation,  supplemental retirement,  severance and other
similar fringe or employee  benefit  plans,  programs or  arrangements,  and any
employment  or  compensation  agreements,  written or  otherwise,  currently  or
heretofore  maintained,  contributed  to or  entered  into by the Seller for the
benefit or,  relating  to, or with any  employee  of the Seller  employed in the
Seller's  business  (the  "Employee  Plans").  None of the  Employee  Plans is a
multi-employer   plan,   as   defined  in   Section   4001(a)(3)   of  ERISA  (a
"Multi-employer Plan"). There has been no "prohibited transaction", as such term
is defined in Section 406 of ERISA and Section 4975 of the Code, with respect to
any Employee Plan. No Employee Plan has breached any  requirement  prescribed by
any applicable statute,  order, or governmental rule or regulation  currently in
effect  with  respect  thereto,  nor  has  the  Seller  failed  to  perform  any
obligations  required to be performed by it under, nor is it in default under or
in  violation  of, nor has it knowledge of any default or violation by any other
party of the Employee  Plans which would result in liability to the Buyer.  Each


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Employee  Plan  intended  to qualify  under  Section  401(a) of the Code does so
qualify,  and each trust created thereunder intended to be exempt from tax under
the  provisions  of  Section  501(a) of the Code is so exempt,  a  determination
letter from the Internal  Revenue  Service (the "IRS") that each such plan is so
qualified  and each such trust is so exempt has been  applied for and the Seller
is aware of no reason why each such favorable determination letter should not be
issued;  and there  exists no fact which would  adversely  affect the  qualified
status of any such plan or which would eliminate or partially  eliminate the tax
treatment  accorded to the  employers,  employees or the corpus of any such plan
under the Code.  The Seller has not incurred and does not  reasonably  expect to
incur (i) any liability to the Pension Benefit Guaranty  Corporation (other than
a liability for premiums  pursuant to Section 4007 of ERISA) with respect to any
employee plan subject to Title IV of ERISA or (ii) any withdrawal liability with
respect to any Multi-employer Plan. All contributions required to be made to any
Employee Plan have been made,  and all  appropriate  accruals of  contributions,
disbursements  and expenses have been made with respect to such Employee  Plans.
With respect to each  Employee  Plan which is covered by Title IV of ERISA,  the
market value of assets of such plan as of the date hereof  exceeds the actuarial
present  value of  benefits  accrued  under  such  plan as of the  date  hereof,
determined in accordance  with the actuarial  assumptions  set forth in the most
recent actuarial valuation report of such plan.

                 (ii) The Seller has  delivered  to the Buyer true and  complete
copies of all  Employee  Plans  listed in Schedule  6(o) and of all  agreements,
including  trust  agreements  and other funding  instruments,  such as insurance
contracts,  embodying such plans. With respect to each employee benefit plan, as
defined in Section  3(3) of ERISA,  listed in Schedule  6(o),  true and complete
copies of the (i) last filed  Form 5500 and all  applicable  schedules  thereto;
(ii) summary plan  description  and all  modifications  thereto  communicated to
employees;  and (iii) most recent annual and periodic accounting of related plan
assets, if any, have been delivered to the Buyer and are correct in all material
respects.  With respect to each  employee  pension  benefit  plan, as defined in
Section 3(2) of ERISA,  listed on Schedule 6(o), true and complete copies of the
(i)  most  recent  determination  letter,  if  any,  issued  by the  IRS and the
application therefor, and (ii) most recent annual actuarial valuation report, if
any, have been delivered to the Buyer and are correct in all material respects.

             (p) LABOR  MATTERS.  Except as set forth in Schedule  6(p) attached
hereto,  with  respect to the  Seller's  business,  the Seller is  currently  in
compliance  in all  material  respects  with  all  applicable  laws,  rules  and
regulations  relating to the  employment  of labor,  including  those related to
wages, hours, collective registrations, and authorizations.

             (q)  TAX  RETURNS.   Seller,  as  appropriate,   has  timely  filed
(including extensions) with the appropriate  governmental  authorities,  all tax
and  other  returns  required  to be filed by it and such  returns  are true and
complete  and all  taxes  due have  been  paid.  The  Seller  will  timely  file
(including extensions) with appropriate  governmental  authorities,  all tax and
other  returns  which shall be required to be filed by it after the Closing Date
and such  returns  shall be true and complete and all taxes due shall be paid by
the Seller.

             (r) INSURANCE.  All insurance  policies and  arrangements of Seller
relative the Electric  Project are set forth on Schedule 6(r)  attached  hereto.
Said  insurance  policies  and  arrangements  are in full force and effect,  all
premiums with respect thereto are currently paid, and Seller is in compliance in
all material respects with the terms thereof.

             (s) ENVIRONMENTAL  MATTERs.  Seller has provided to Buyer copies of
all documents,  records and information  available to Seller, a complete listing
of  which  is set  forth  on  Schedule  6(s)  attached  hereto,  concerning  any
environmental or health and safety matter relevant to Seller,  whether generated


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by  Seller or  others,  including,  without  limitation,  environmental  audits,
environmental  risk  assessments,  site  assessments,   documentation  regarding
offsite  disposal,  spill control plans, and reports,  correspondence,  permits,
licenses, approvals, consents, and other authorizations related to environmental
or health and safety matters issued by any governmental agency.

             (t) QUALIFYING FACILITY. Seller has taken all actions and filed all
notices or  applications  necessary to obtain and maintain  qualifying  facility
status  of the  Electric  Project  pursuant  to the  Public  Utility  Regulatory
Policies Act of 1978. Seller has received no notices and has no knowledge of any
facts or  circumstances  that  (i)  violate  the  requirements  for  maintaining
qualifying  facility status for the operations of the Electric Project,  or (ii)
following  the  purchase of the  Electric  Project by Buyer,  would  prevent the
obtaining or  maintaining or would increase the cost of obtaining or maintaining
qualifying  facility  status under such statute for the Electric  Project by the
Buyer.

             (u) PERMITS AND GOVERNMENTAL AUTHORITY.

                 (i) All Electric  Project Permits required for the construction
and operation of the Electric  Project  either (i) have been obtained and remain
in full  force  and  effect  and are  not  subject  to any  appeals  or  further
proceedings  or  to  any   unsatisfied   conditions   that  may  allow  material
modification  or  revocation  or (ii) with respect to Electric  Project  Permits
required for operation and construction and not yet obtained, are of a type that
are routinely  granted on application and that could not be reasonably  obtained
before the Closing  Date.  Upon the purchase of the Electric  Assets,  the Buyer
will,  to the extent  permitted  by law,  without  penalty,  additional  cost or
consent of any person,  be entitled to the benefit of each such Electric Project
Permit so that the operation of the Electric Project may continue, except as set
forth on Schedule 6(u). All applicable  Electric  Project Permits obtained as of
the Closing Date are listed in Schedule l(e).

                 (ii) Except for the  Electric  Project  Permits  identified  in
Schedule l(e), no action by, and no notice to or filing with, any federal, state
or local  governmental  authority or regulatory  body (x) is or will be required
for the due execution,  delivery and performance by the Seller of this Agreement
or any  agreement,  lease or document to be entered into,  assigned or delivered
pursuant to the terms hereof of to which it is or will be a party,  or (y) is or
will be required for the financing and operation of the Electric Assets.

             (v) ENVIRONMENTAL COMPLIANCE.  Seller has taken all necessary steps
to  investigate  the past and present  condition and usage of its properties and
the operations  conducted  thereon and, based upon such diligent  investigation,
has determined and hereby represents and warrants that:

                 (i) Neither the Seller nor any operator of its properties is in
violation, or alleged violation,  of any judgment,  decree, order, law, license,
rule or regulation  pertaining to the environmental  matters,  including without
limitation,  those arising under  federal,  state or local  environmental  laws,
which violation would have a material adverse effect on the business,  assets or
financial condition of the Seller;

                 (ii) The Seller has not  received  notice  from any third party
including,   without  limitation;  any  federal,  state  or  local  governmental
authority,  (a) that it has been  identified by the United States  Environmental
Protection  Agency ("EPA") as a potentially  responsible party under CERCLA with
respect to a site listed on the National  Priorities  List,  40 C.F.R.  Part 300
Appendix  B  (1986);  (b) that any  hazardous  waste,  as  defined  by 42 U.S.C.
ss.6903(5),  any  hazardous  waste,  as  defined by 42 U.S.C.  ss.9601(14),  any
pollutant  or  contaminant  as  defined  by 42 U.S.C.  ss.9601(33)  or any toxic


                                       91


substance, oil or hazardous materials or other chemicals or substances regulated
by any federal, state or local environmental laws ("Hazardous Substances") which
it has generated, transported or disposed of has been found at any site at which
a federal,  state or local  agency or other  third  party has  conducted  or has
ordered  that the  Seller  conduct a  remedial  investigation,  removal or other
response action pursuant to any federal,  state or local  environmental  law; or
(c) that it is or shall be a named party to any claim,  action, cause of action,
complaint,  legal or administrative  proceeding arising out of any third party's
incurrence  of costs,  expenses,  losses or  damages of any kind  whatsoever  in
connection with the release of Hazardous Substances;

                 (iii) (a) No portion of the Seller's  leased real  property has
been  used for the  handling,  processing,  storage  or  disposal  of  Hazardous
Substances  except  in  accordance  with  applicable  federal,  state  or  local
environmental  laws;  and no  underground  tank  or  other  underground  storage
receptacle for Hazardous Substances is located on such real property; (b) in the
course  of any  activities  conducted  by the  Seller or  operators  of the real
property,  no Hazardous Substances have been generated or are being used on such
real  property  except in accordance  with  applicable  federal,  state or local
environmental  laws; (c) there have been no unpermitted  releases (i.e. any past
or present releasing,  spilling, leaking, pumping, pouring, emitting,  emptying,
discharging,  injecting,  escaping, disposing or dumping) or threatened releases
property,  which releases  would have a material  adverse effect on the value of
such real property or adjacent properties or the environment; (d) to the best of
the Seller's  knowledge,  there have been no releases on, upon, from or into any
real  property  in the  vicinity of the real  property  which,  through  soil or
groundwater contamination,  may have come to be located on, and which would have
a  material  adverse  effect  on the  value of,  the real  property;  and (e) in
addition, any Hazardous Substances that have been generated on the real property
have been transported  offsite only by carriers having an identification  number
issued  by the  EPA,  treated  or  disposed  of only by  treatment  or  disposal
facilities maintaining valid permits as required under applicable federal, state
or local  environmental  laws,  which  transporters and facilities have been and
are, to the best of the Seller's  knowledge,  operating in compliance  with such
permits and applicable environmental laws;

                 (iv) The  real  property  owned or  leased  by  Seller  in Yolo
County,  California  is not  subject to any  applicable  environmental  clean up
responsibility  law or environmental  restrictive  transfer law or regulation by
virtue of the transactions set forth herein and contemplated hereby; and

                 (v) The Seller has  provided  the Buyer with true and  complete
copies  of  all  material,   documents,   reports,   site   assessments,   data,
communications  and other  materials in its possession or to which it has access
which contain information with respect to potential environmental liabilities of
the Seller  related to compliance  with federal,  state and local  environmental
laws.

             (w) Disclosure. No representation or warranty made by the Seller in
this Agreement or in any agreement, instrument, document, certificate, statement
or letter  furnished  to the Buyer by or on behalf of or at the  request  of the
Seller in connection with any of the transactions contemplated by this Agreement
contains any untrue  statement  of a material  fact or omits to state a material
fact necessary in order to make the statements  contained therein not misleading
in light of the circumstances in which they are made.

         7.  REPRESENTATIONS  AND WARRANTIES OF BUYER.  The Buyer represents and
warrants to Seller and Yolo Gasco the following (both as of the Closing Date and
as of the date hereof):

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             (a)  DUE  FORMATION  AND  QUALIFICATION.  The  Buyer  is a  limited
liability  company duly organized,  validly  existing and in good standing under
the laws of its state of  formation,  and has the power and lawful  authority to
carry on its business as now being  conducted and to own or lease its properties
and assets as now owned,  leased or operated by it. The Buyer is duly  qualified
or  otherwise  authorized  as a foreign  limited  liability  company to transact
business  and is in good  standing in each  jurisdiction  in which,  to the best
knowledge  and belief of the Buyer,  a failure to be so  qualified  would have a
material adverse effect on the business of the Buyer.

             (b) AUTHORIZATION. The Buyer has full power and authority under its
formation  documents  and operating  agreement  and, the managers and members of
Buyer have taken all  necessary  action to  authorize  the Buyer to execute  and
deliver this Agreement and to consummate the  transactions  contemplated  hereby
and, assuming due authorization, execution and delivery of this Agreement by the
Seller  and Yolo  Gasco,  this  Agreement  constitutes  the  valid  and  binding
obligation of the Buyer  enforceable  in  accordance  with its terms except that
such  enforcement  may be subject  to  bankruptcy,  insolvency,  reorganization,
moratorium  and  other  similar  laws now or  hereafter  in effect  relating  to
creditors'  rights  generally and the remedy of specific  performance  and other
forms of  equitable  relief  may be  subject to  equitable  defenses  and to the
discretion of the court before which any proceeding therefor may be brought.

             (c)  NON-CONTRAVENTION.  Neither the execution and delivery of this
Agreement or the other  agreements  contemplated  hereby nor the consummation of
the transactions contemplated hereby does or will violate, conflict with, result
in a breach of any  provision  of,  constitute  a default  under,  result in the
termination of or permit any third party to terminate  (with or without  notice,
lapse of time or pursuant to any legal or equitable principle) or accelerate the
performance required on the part of the Buyer by the terms of, or accelerate the
maturity of or require the  prepayment of any  indebtedness  of the Buyer under,
any judgment,  order, decree or agreement or instrument to or by which the Buyer
or any of its assets is subject or bound.

             (d)  AUTHORITY OF THE BUYER.  Except as set forth on Schedule  7(d)
attached  hereto,  no consent,  authorization  or approval  of, or  declaration,
filing or  registration  with, any  governmental,  administrative  or regulatory
body,  or any consent,  authorization  or approval of any other third party,  is
necessary  in  connection  with the  Buyer's  purchase  of the  Electric  Assets
contemplated  hereby or the consummation of the other transactions  contemplated
hereby.

             (e)  LITIGATION.  Except as set  forth on  Schedule  7(e)  attached
hereto,  there are no claims,  actions,  suits,  proceedings  or  investigations
pending  or, to the best  knowledge  and belief of the Buyer,  threatened  by or
against the Buyer with respect to the transactions  contemplated  hereby, at law
or in equity or before or by any  federal,  state,  municipal,  foreign or other


                                       93


governmental department, commission, board, agency, instrumentality or authority
nor does the  Buyer  know or have any  reason  to know of any basis for any such
claim,  action,  suit,  proceeding or investigation except with respect to those
claims,  actions,  suits,  proceedings or investigations  which would not have a
material adverse effect on the Buyer.

             (f) BROKER'S OR FINDER'S  FEES.  No agent,  broker,  person or firm
acting on behalf of Buyer is, or will be, entitled to any commission or broker's
or finder's fees from the Seller or from any person  controlling,  controlled by
or  under  common  control  with  the  Seller  in  connection  with  any  of the
transactions contemplated herein.

         8.  REPRESENTATIONS AND WARRANTIES OF YOLO GASCO. Yolo Gasco represents
and  warrants to NEO Yolo the  following  (both as of the Closing Date and as of
the date hereof):

             (a) DUE  CORPORATE  FORMATION  AND  QUALIFICATION.  Yolo Gasco is a
corporation duly organized, validly existing and in good standing under the laws
of the State of California,  and has the power and lawful  authority to carry on
its  business  as now  being  conducted,  and to own or lease  and  operate  its
properties  and  assets  as now  owned,  leased or  operated  by it. To the best
knowledge and belief of Yolo Gasco, Yolo Gasco is not required to be licensed or
qualified  as a foreign  corporation  in any other  jurisdiction  except where a
failure to be so  qualified  would have a material  adverse  effect upon the Gas
Project.  Yolo Gasco has no subsidiaries and does not own any securities  issued
by any other business  organization or governmental  authority.  Yolo Gasco does
not own or  have  any  direct  or  indirect  interest  in or  control  over  any
corporation, partnership, joint venture or entity of any kind.

             (b)  CORPORATE  AUTHORIZATION  OF YOLO  GASCO.  Yolo Gasco has full
power and  authority  under its  corporate  charter to execute and deliver  this
Agreement and each agreement,  document and instrument executed and delivered by
Yolo  Gasco  pursuant  to this  Agreement  and to  consummate  the  transactions
contemplated  hereby, and assuming due authorization,  execution and delivery of
this Agreement by the other parties  hereto,  this Agreement and each agreement,
document and  instrument  executed and delivered by Yolo Gasco  pursuant to this
Agreement constitutes the valid and binding obligation of Yolo Gasco enforceable
in accordance  with its terms,  except that such  enforcement  may be subject to
bankruptcy, insolvency, reorganization,  moratorium or other similar laws now or
hereafter in effect  relating to creditors'  rights  generally and the remedy of
specific  performance  and other  forms of  equitable  relief  may be subject to
equitable  defenses  and to  the  discretion  of  the  court  before  which  any
proceeding therefor may be brought.

             (c)  AUTHORITY OF YOLO GASCO.  Except as set forth in Schedule 8(c)
attached  hereto,  to the best  knowledge and belief of Yolo Gasco,  no consent,
authorization or approval of, or declaration,  filing or registration  with, any
governmental,  administrative or regulatory body, or any consent,  authorization
or approval of any other third party, is necessary in order to enable Yolo Gasco
to enter into and perform its obligations under this Agreement and to consummate
the transactions  contemplated  hereby, and, to the best knowledge and belief of
Yolo Gasco,  neither  the  execution  and  delivery  of this  Agreement  nor the
consummation of the transactions contemplated hereby will:

                 (i) be in violation of the articles of  incorporation or bylaws
of Yolo  Gasco or  constitute  a  breach  of any  evidence  of  indebtedness  or
agreement relating to the Gas Project to which Yolo Gasco is a party;

                 (ii) cause a default  under any  mortgage  or deed of
trust or other lien,  charge or  encumbrance to which any Gas Asset is
subject or under any  contract  relating  to the Gas  Project to which
Yolo Gasco is a party,  or permit the termination of any such contract
by another person;

                 (iii)  result in the  creation or  imposition  of any  security
interest,  lien,  charge  or other  encumbrance  upon any Gas  Assets  under any
agreement or commitment to which Yolo Gasco is bound;



                                       94


                 (iv)  accelerate,  or constitute an event  entitling,  or which
would,  on  notice  or  lapse  of time  or  both,  entitle,  the  holder  of any
indebtedness of Yolo Gasco to accelerate the maturity of any such indebtedness;

                 (v)  conflict  with  or  result  in the  breach  of  any  writ,
injunction or decree of any court or governmental instrumentality; or

                 (vi) violate any statute,  law,  regulation,  permit,  order or
other  governmental  authorization  of any  jurisdiction  as such statute,  law,
regulation,  permit,  order or other governmental  authorization  relates to the
properties of the Gas Project.

             (d) TITLE TO PROPERTIES;  ENCUMBRANCES.  Yolo Gasco has good, valid
and  marketable  title  (except  for  leasehold  interests,  rights  pursuant to
easements,  licenses and other interests of third parties specifically set forth
on any  Schedule  annexed  hereto) to all its material  tangible and  intangible
personal  properties and assets,  including all tangible and intangible personal
properties and assets which are included  among the Gas Assets,  to be purchased
by Yolo Gasco in each case  subject  to no  encumbrance,  lien,  charge or other
restriction of any kind or character,  except for (i) liens consisting of zoning
or  planning  restrictions,   easements,   permits  and  other  restrictions  or
limitations on the use of real or tangible or intangible personal property which
are described in Schedule 8(d) attached  hereto,  (ii) liens for current  taxes,
assessments  or  governmental  charges  or  levies on  property  not yet due and
delinquent and (iii) liens,  encumbrances  and easements under the contracts and
agreements  which are included  among the Gas Assets and which are  specifically
identified on any Schedule annexed hereto (liens of the type described in clause
(i), (ii), and (iii) above are hereinafter  sometimes referred to as "Yolo Gasco
Permitted  Liens"),  and (iv)  the  liens or  other  encumbrances  set  forth on
Schedule 8(d) attached hereto.

             (e)  COMPLIANCE  WITH LAWS.  Except as set forth on Schedule  8e(i)
attached hereto, to Yolo Gasco's best knowledge and belief,  with respect to the
Gas  Project,  (i) Yolo  Gasco  has  received  no notice  from any  governmental
authority that it is in violation of applicable laws and  regulations,  and (ii)
Yolo Gasco has not received any  notification of past violations of such laws or
regulations  that could  reasonably  be  expected  to result in future  material
claims against it. To the best knowledge and belief of Yolo Gasco,  set forth on
Schedule  8e(ii)  attached  hereto  is a list of all of Yolo  Gasco's  licenses,
permits,  orders and approvals of any federal,  state or local  governmental  or
regulatory  bodies that are material to or necessary  for the conduct of the Gas
Project  (collectively "Gas Project Permits").  To the best knowledge and belief
of Yolo  Gasco,  all Gas  Project  Permits  are in full  force and effect and no
proceeding is pending or threatened to revoke, or limit any Gas Project Permit.

             (f) LITIGATION.  There are no actions,  suits or claims,  or legal,
administrative or arbitral proceedings or investigations pending or, to the best
knowledge and belief of Yolo Gasco,  threatened  against or involving Yolo Gasco
or any of its properties or assets with respect to the Gas Project.

             (g)  DELEGATION  AGREEMENT.  Yolo Gasco has received no notice from
either  Seller or Yolo County that it is in  violation or breach of any material
provision of the Delegation Agreement. The Delegation Agreement is in full force
and effect, and Yolo Gasco is not in default or breach under such agreement.

                                       95


             (h) CONTRACTS AND OTHER  AGREEMENTS.  Schedule 8(h) attached hereto
contains a complete and accurate  list of all of the Gas Project  contracts  and
other  agreements  with  respect to the Gas Project to which the Yolo Gasco is a
party or by or to which it or its assets or properties are bound or subject;

             (i)  contracts  and other  agreements  with any  current  or former
officer,  director,  or employee  not  cancelable  without  penalty on notice of
thirty (30) days or less;

                 (ii) contracts and other agreements with material  suppliers of
products sold or leased by Yolo Gasco in the normal course of the Gas Project;

                 (iii) contracts and other agreements  relating to the
borrowing of money including any indenture, mortgage, promissory note,
loan agreement, or guaranty;

                 (iv) operations and maintenance  agreements with respect to the
Gas Project;

                 (v) any  water  supply  agreement  or any other  agreement  for
condensate or other liquid disposal; and

                 (vi) any other  contract  or other  agreement  which Yolo Gasco
reasonably  believes is material to the Gas Project (other than those  reflected
on any of the other Schedules to this  Agreement).  There have been delivered or
made available to NEO Yolo true and complete  copies of all of the contracts and
other  agreements set forth on Schedule 8(h) or on any other  schedule  attached
hereto.  To the best  knowledge and belief of Yolo Gasco,  all of such contracts
and other  agreements  are valid and binding upon Yolo Gasco in accordance  with
their terms, and Yolo Gasco is not in material default under any such contracts.

             (i) REAL ESTATE LEASES.  Schedule 8(i) attached hereto sets forth a
list and summary description of all leases,  subleases,  easements,  licenses or
other  agreements  under which Yolo Gasco is the lessor or lessee of, or uses or
occupies or allows the use or occupancy  of, any real  property (the "Yolo Gasco
Leases and  Easements").  All of the Yolo Gasco Leases and  Easements,  true and
complete  copies of which have been delivered to NEO Yolo, are in effect and, to
the best  knowledge  and belief of Yolo  Gasco,  Yolo  Gasco is not in  material
default  under or with respect to any of Yolo Gasco Leases or Easements  nor has
the Yolo Gasco  received or sent any notice of any default under or with respect
to any of the same.  To the best  knowledge  and belief of Yolo Gasco,  no other
party to any of the Yolo Gasco Leases and Easements is in material default under
or with respect to any of the same.

             (j) INTELLECTUAL PROPERTY. Schedule 8(j) attached hereto sets forth
a list of all patents, trade secrets,  proprietary rights,  trademarks,  service
marks and trade names (collectively,  "Yo1o Gasco Intellectual  Property") owned
by Yolo Gasco that  relate to the Gas  Project.  Except as set forth on Schedule
8(j),  to  the  best  knowledge  and  belief  of  Yolo  Gasco,  all  Yolo  Gasco
Intellectual  Property is owned  outright  by Yolo Gasco,  free and clear of any
lien or encumbrance and except as so set forth,  there exist no obligations with
respect to any Yolo Gasco Intellectual Property requiring Yolo Gasco to make any
payment  in  respect of its use or  otherwise.  Except as set forth on  Schedule
8(j), to the best  knowledge and belief of Yolo Gasco,  Yolo Gasco has no notice
of any patent,  trademark,  service  mark or trade name of any other person that


                                       96


infringes  upon,  or is  infringed  upon by,  any of the  property  set forth on
Schedule 8(j) or notice of any claim of any other person  relating to any of the
property set forth on Schedule 8(j) or any process or  confidential  information
of Yolo  Gasco.  Yolo  Gasco's  rights  in all of such Yolo  Gasco  Intellectual
Property are freely transferable.

             (k) BROKER'S OR FINDER'S  FEES.  No agent,  broker,  person or firm
acting on behalf of Yolo Gasco is, or will be,  entitled  to any  commission  or
broker's or finder's  fees from any of the  parties  hereto,  or from any person
controlling,  controlled  by or under  common  control  with any of the  parties
hereto, in connection with any of the transactions contemplated herein.

             (l) EMPLOYEE BENEFIT PLANS.

                 (i) Schedule  8(l) attached  hereto lists all employee  benefit
plans, as defined in Section 3(3) of the Employee Retirement Income Security Act
of 1974, as amended  ("ERISA"),  and all bonus,  stock option,  stock  purchase,
incentive, deferred compensation,  supplemental retirement,  severance and other
similar fringe or employee  benefit  plans,  programs or  arrangements,  and any
employment  or  compensation  agreements,  written or  otherwise,  currently  or
heretofore  maintained,  contributed  to or  entered  into by Yolo Gasco for the
benefit or,  relating to, or with any employee of Yolo Gasco employed in the Gas
Project (the "Employee  Plans").  None of the Employee Plans is a multi-employer
plan, as defined in Section 4001(a)(3) of ERISA (a "Multi-employer Plan"). There
has been no "prohibited transaction",  as such term is defined in Section 406 of
ERISA and  Section  4975 of the Code,  with  respect to any  Employee  Plan.  No
Employee Plan has breached any requirement prescribed by any applicable statute,
order,  or  governmental  rule or  regulation  currently  in effect with respect
thereto,  nor has Yolo Gasco  failed to perform any  obligations  required to be
performed by it under, nor is it in default under or in violation of, nor has it
knowledge of any default or  violation by any other party of the Employee  Plans
which would result in  liability to NEO Yolo.  Each  Employee  Plan  intended to
qualify  under  Section  401 (a) of the Code  does so  qualify,  and each  trust
created  thereunder  intended  to be exempt  from tax under  the  provisions  of
Section  501 (a) of the  Code is so  exempt  a  determination  letter  from  the
Internal  Revenue  Service (the "IRS") that each such plan is so  qualified  and
each such trust is so exempt has been  applied for and Yolo Gasco is aware of no
reason why each such favorable  determination  letter should not be issued,  and
there exists no fact which would  adversely  affect the qualified  status of any
such plan or which would  eliminate or  partially  eliminate  the tax  treatment
accorded to the  employers,  employees  or the corpus of any such plan under the
Code.  Yolo Gasco has not incurred and does not  reasonably  expect to incur (i)
any  liability  to  the  Pension  Benefit  Guaranty  Corporation  (other  than a
liability  for  premiums  pursuant to Section 4007 of ERISA) with respect to any
employee plan subject to Title IV of ERISA or (ii) any withdrawal liability with
respect to any Multi-employer Plan. All contributions required to be made to any
Employee Plan have been made,  and all  appropriate  accruals of  contributions,
disbursements  and expenses have been made with respect to such Employee  Plans.
With respect to each  Employee  Plan which is covered by Title IV of ERISA,  the
market value of assets of such plan as of the date hereof  exceeds the actuarial
present  value of  benefits  accrued  under  such  plan as of the  date  hereof,
determined in accordance  with the actuarial  assumptions  set forth in the most
recent actuarial valuation report of such plan.

                 (ii) Yolo  Gasco has  delivered  to NEO Yolo true and  complete
copies of all  Employee  Plans  listed in Schedule  8(1) and of all  agreements,
including  trust  agreements  and other funding  instruments,  such as insurance
contracts,  embodying such plans. With respect to each employee benefit plan, as
defined in Section  3(3) of ERISA,  listed in Schedule  8(1),  true and complete
copies of the (a) last filed Form 5500 and all applicable Schedules thereto, (b)


                                       97


summary plan description and all modifications thereto communicated to employees
and (c) most recent annual and periodic  accounting  of related plan assets,  if
any, have been  delivered to NEO Yolo and are correct in all material  respects.
With respect to each employee  pension  benefit plan, as defined in Section 3(2)
of ERISA,  listed on Schedule  8(1),  true and  complete  copies of the (a) most
recent  determination  letter,  if any,  issued  by the IRS and the  application
therefor and (b) most recent annual  actuarial  valuation  report,  if any, have
been delivered to NEO Yolo and are correct in all material respects.

             (m) LABOR MATTERS. Except as set forth in Schedule attached hereto,
with respect to the Gas Project,  Yolo Gasco is currently in  compliance  in all
material  respects with all applicable laws,  rules and regulations  relating to
the employment of labor,  including  those related to wages,  hours,  collective
registrations, and authorizations.

             (n) TAX  RETURNS.  Yolo Gasco,  as  appropriate,  has timely  filed
(including extensions) with the appropriate  governmental  authorities,  all tax
and  other  returns  required  to be filed by it and such  returns  are true and
complete  and all  taxes  due have  been  paid.  Yolo  Gasco  will  timely  file
(including extensions) with appropriate  governmental  authorities,  all tax and
other  returns  which shall be required to be filed by it after the Closing Date
and such  returns  shall be true and complete and all taxes due shall be paid by
Yolo Gasco.

             (o)  ENVIRONMENTAL  MATTERS.  Yolo Gasco has  provided  to NEO Yolo
copies of all  documents,  records and  information  available to Yolo Gasco,  a
complete listing of which is set forth on Schedule  attached hereto,  concerning
any  environmental  or health and safety matter relevant to Yolo Gasco,  whether
generated by Yolo Gasco or others, including, without limitation,  environmental
audits,   environmental  risk  assessments,   site  assessments,   documentation
regarding off-site disposal,  spill control plans, and reports,  correspondence,
permits,  licenses,  approvals,  consents,  and other authorizations  related to
environmental or health and safety matters issued by any governmental agency.

             (p) Section 29 Qualification. Yolo Gasco submitted a purchase order
for the  requisition of certain  equipment for the extraction of landfill gas in
connection with the Gas Project, a true and correct copy of which purchase order
is attached hereto as Exhibit 8 (p).

             (q) PERMITS AND GOVERNMENTAL AUTHORITY.

                 (i) All Gas Project permits  required for the  construction and
operation  of the Gas Project  either (i) have been  obtained and remain in full
force and effect and are not subject to any appeals or further proceedings or to
any unsatisfied conditions that may allow material modification or revocation or
(ii) with respect to Gas Project Permits required for operation and construction
and not yet obtained,  are of a type that are routinely  granted on  application
and that could not be reasonably  obtained  before .the Closing  Date.  Upon the
purchase  of the Gas  Assets,  NEO Yolo will,  to the extent  permitted  by law,
without  penalty,  additional cost or consent of any person,  be entitled to the
benefit of each such Gas Project Permit so that the operation of the Gas Project
may continue. All applicable Gas Project Permits obtained as of the Closing Date
are listed in Schedule 8(u)(i).

                 (ii) Except for the permits identified in Schedule 8(q)(ii), no
action  by,  and no  notice  to or  filing  with,  any  federal,  state or local
governmental authority or regulatory body (i) is or will be required for the due
execution,  delivery  and  performance  by Yolo Gasco of this  Agreement  or any
agreement,  lease or document to be entered into, assigned or delivered pursuant
to the terms  hereof of to which it is or will be a party,  or (ii) is  required
for the  construction,  financing and  operation of the Gas Project  through the
Closing Date.

                                       98


             (r) ENVIRONMENTAL  COMPLIANCE.  Yolo Gasco has taken all reasonable
steps to investigate the past and present condition and usage of the Gas Project
and  the   operations   conducted   thereon  and,   based  upon  such   diligent
investigation, has determined and hereby represents and warrants that, except as
set forth on Schedule 8(r):

                 (i) Neither  Yolo Gasco nor any  operator of the Gas Project is
in  violation,  or alleged  violation,  of any  judgment,  decree,  order,  law,
license, rule or regulation pertaining to the environmental  matters,  including
without  limitation,  those arising under federal,  state or local environmental
laws, which violation would have a material adverse effect on the Gas Project or
the Gas Assets.

                 (ii) Yolo Gasco has not  received  notice  from any third party
including,   without  limitation,  any  federal,  state  or  local  governmental
authority,  (a) that it has been  identified by the United States  Environmental
Protection  Agency ("EPA") as a potentially  responsible party under CERCLA with
respect to a site listed on the National  Priorities  List,  40 C.F.R.  Part 300
Appendix  B  (1986);  (b) that any  hazardous  waste,  as  defined  by 42 U.S.C.
ss.6903(5), any hazardous waste, as defined 42 U.S.C. ss.9601(14), any pollutant
or contaminant as defined by 42 U.S.C.  ss.9601(33) or any toxic substance,  oil
or  hazardous  materials  or other  chemicals  or  substances  regulated  by any
federal,  state or local environmental laws ("Hazardous  Substances") which Yolo
Gasco has  generated,  transported  or disposed of has been found at any site at
which a federal,  state or local agency or other third party to the best of Yolo
Gasco's  knowledge  has  conducted  or has  ordered  that Yolo  Gasco  conduct a
remedial  investigation,  removal  or  other  response  action  pursuant  to any
federal, state or local environmental law, or (c) that it is or shall be a named
party to any claim, action, cause of action, complaint,  legal or administrative
proceeding  arising  out of any third  party's  incurrence  of costs,  expenses,
losses or damages  of any kind  whatsoever  in  connection  with the  release of
Hazardous Substances,

                 (iii) (a) No portion of Yolo Gasco's  leased real  property has
been used by Yolo Gasco for the  handling,  processing,  storage or  disposal of
Hazardous  Substances  except in accordance  with applicable  federal,  state or
local  environmental  laws,  and  to the  best  of  Yolo  Gasco's  knowledge  no
underground  tank  or  other  underground   storage   receptacle  for  Hazardous
Substances is located on such real property; (b) in the course of any activities
conducted by Yolo Gasco,  no  Hazardous  Substances  have been  generated or are
being  used on such  real  property  by Yolo  Gasco  except in  accordance  with
applicable  federal,  state or local environmental laws; (c) to the best of Yolo
Gasco's  knowledge  there have been no  unpermitted  releases  (i.e. any past or
present releasing,  spilling,  leaking,  pumping, pouring,  emitting,  emptying,
discharging,  injecting,  escaping, disposing or dumping) or threatened releases
caused by Yolo Gasco,  which releases Yolo Gasco has  responsibility  to correct
and which it left  uncorrected and which would have a material adverse effect on
the value of such real property or adjacent  properties or the environment;  (d)
to the best of Yolo Gasco's knowledge, there have been no releases by Yolo Gasco
on, upon,  from or into,  any real property in the vicinity of the real property
which,  through soil or groundwater  contamination,  may have come to be located
on, and which  would have a  material  adverse  effect on the value of, the real
property; and (e) in addition, any Hazardous Substances that have been generated
by Yolo Gasco on the real property have been (i) either delivered to Yolo County
for  treatment  and  disposal  or (ii) have  been  transported  offsite  only by
carriers having an identification  number issued by the EPA, treated or disposed


                                       99


of only by  treatment  or  disposal  facilities  maintaining  valid  permits  as
required under  applicable  federal,  state or local  environmental  laws, which
transporters  and facilities  have been and are, to the best of the Yolo Gasco's
knowledge,   operating  in   compliance   with  such   permits  and   applicable
environmental laws;

                 (iv) To the best of Yolo Gasco's  knowledge,  the real property
owned or leased by Yolo Gasco in Yolo County,  California  is not subject to any
applicable   environmental   clean  up   responsibility   law  or  environmental
restrictive  transfer law or regulation by virtue of Yolo Gasco's  activities on
the property;

                 (v) Yolo  Gasco has  provided  NEO Yolo with true and  complete
copies  of  all   material   documents,   reports,   site   assessments,   data,
communications  and other  materials in its possession or to which it has access
which contain information with respect to potential environmental liabilities of
Yolo Gasco related to compliance  with  federal,  state and local  environmental
laws.

             (s) DISCLOSURE. No representation or warranty made by Yolo Gasco in
this Agreement or in any agreement, instrument, document, certificate, statement
or letter  furnished  to NEO Yolo by or on behalf of or at the  request  of Yolo
Gasco in connection with any of the transactions  contemplated by this Agreement
contains any untrue  statement  of a material  fact or omits to state a material
fact necessary in order to make the statements  contained therein not misleading
in light of the circumstances in which they are made.

             (t) INDEPENDENT OPERATIONS.  The operations of Yolo Gasco have been
run  completely  independently  from  those of Seller,  and Yolo Gasco  makes no
representations  or  warranties  about  Seller.   Seller's   operations  or  the
conditions of Seller's assets or properties, whether owned, leased or used.

         9. REPRESENTATIONS AND WARRANTIES OF NEO YOLO.

             NEO Yolo  represents and warrants to Yolo Gasco the following (both
as of the Closing Date and as of the date hereof):

             (a) DUE FORMATION AND QUALIFICATION. NEO Yolo is a corporation duly
organized,  validly existing and in good standing under the laws of its state of
formation,  and has the power and lawful  authority  to carry on its business as
now being  conducted and to own or lease its properties and assets as now owned,
leased or operated by it. NEO Yolo viii, prior to the commencement of activities
in California,  be duly qualified or otherwise  authorized as a foreign  limited
liability company to transact business in California.

             (b) AUTHORIZATION.  NEO Yolo has full power and authority under its
formation documents and operating agreement, and the managers and members of NEO
Yolo have  taken all  necessary  action to  authorize  NEO Yolo to  execute  and
deliver this Agreement and to consummate the  transactions  contemplated  hereby
and,  assuming due  authorization,  execution and delivery of this  Agreement by
Yolo Gasco,  Seller and Buyer, this Agreement  constitutes the valid and binding
obligation of NEO Yolo enforceable in accordance with its terms except that such
enforcement may be subject to bankruptcy, insolvency, reorganization, moratorium
and other similar laws now or hereafter in effect relating to creditors1  rights
generally  and the remedy of specific  performance  and other forms of equitable
relief may be subject to equitable  defenses and to the  discretion of the court
before which any proceeding therefor may be brought.

                                      100


             (c)  NON-CONTRAVENTION.  Neither the execution and delivery of this
Agreement or the other  agreements  contemplated  hereby nor the consummation of
the transactions contemplated hereby does or will violate, conflict with, result
in a breach of any  provision  of,  constitute  a default  under,  result in the
termination of or permit any third party to terminate  (with or without  notice,
lapse of time or pursuant to any legal or equitable principle) or accelerate the
performance  required on the part of NEO Yolo by the terms of, or accelerate the
maturity of or require the prepayment of any indebtedness of NEO Yolo under, any
judgment,  order,  decree or agreement or  instrument to or by which NEO Yolo or
any of its assets is subject or bound.

             (d)  AUTHORITY  OF NEO YOLO.  Except as set forth on Schedule  9(d)
attached  hereto,  no consent,  authorization  or approval  of, or  declaration,
filing or  registration  with, any  governmental,  administrative  or regulatory
body,  or any consent,  authorization  or approval of any other third party,  is
necessary in connection with NEO Yolo's  consummation of the other  transactions
contemplated hereby.

             (e)  LITIGATION.  Except as set  forth on  Schedule  9(e)  attached
hereto,  there are no claims,  actions,  suits,  proceedings  or  investigations
pending  or,  to the best  knowledge  and  belief of NEO Yolo  threatened  by or
against NEO Yolo with respect to the transactions contemplated hereby, at law or
in equity  or  before or by any  federal,  state,  municipal,  foreign  or other
governmental department, commission, board, agency, instrumentality or authority
nor does NEO Yolo  know or have any  reason  to know of any  basis  for any such
claim,  action,  suit,  proceeding or investigation except with respect to those
claims,  actions,  suits,  proceedings or investigations  which would not have a
material adverse effect on NEO Yolo.

         10. SELLER'S AND BUYER CONDITIONS OF CLOSING.

             (a)  The   obligations  of  Buyer  hereunder  are  subject  to  the
fulfillment  to the  reasonable  satisfaction  of Buyer of each of the following
conditions  prior to or on the Closing Date:  (i) Seller have been performed and
complied with all covenants and conditions,  and shall have made all deliveries,
required by this  Agreement to be performed or complied  with by Seller prior to
or at the Closing and the  representations  of Seller shall be true and accurate
in all material respects as of the Closing.

                 (ii) On the Closing Date,  neither  Seller nor Buyer shall be a
party to, nor will there otherwise be pending,  any judicial,  administrative or
other action, proceeding or investigation (other than any such action brought by
Buyer) seeking to enjoin or restrain the transactions  contemplated  hereby, and
there will not be in effect any injunction, writ, temporary restraining order or
any order of any nature  issued by a court of competent  jurisdiction  directing
that any transactions Provided for herein not be consummated as so provided.

                 (iii) Buyer shall have received  executed  counterparts  of any
consents,  releases and other documentation,  including such consents,  releases
and other documentation as are reasonably satisfactory to Buyer from the parties
listed on Schedule 3(b) (iv),  required to permit Seller and Buyer to consummate
the  transactions  contemplated  by this  Agreement  and to vest in Buyer all of
Seller's right,  title and interest in the Electric  Assets,  in accordance with
the provisions of this Agreement.

                                      101


                 (iv) There shall have  occurred no material  adverse  change in
the operations of the Electric  Project or the condition of the Electric  Assets
during the period from the date hereof to the Closing Date,  except for ordinary
wear and tear,  maintenance  and repair of the  Electric  Assets-  For  purposes
hereof,  "material adverse change" shall include,  without  limitation,  (a) any
material  breach by any party  under a material  contract  to which  Seller is a
party,  by which Seller is bound to which the Electric  Assets are subject which
causes a material diminution in value of the Electric Project,  and the Electric
Assets,  (b) any  material  adverse  change  in  relationships  with  licensees,
suppliers,   distributors,   customers   or  other  having   material   business
relationships  with Seller  which causes a material  diminution  in value of the
Electric Project and the Electric Assets,  (c) any sale or other  disposition of
any of the Electrical Assets other than in the ordinary course of business,  (d)
any  further  encumbrance  of any  Electric  Assets,  and (e) any  modification,
amendment or cancellation of any of Sellers existing  commitments,  contracts or
agreements  relating to the  Electric  Project or the  Electric  Assets,  or the
entering into of any new commitments,  contracts or agreements other than in the
ordinary course of business.

                 (v) All liens,  claims  and  encumbrances  upon or against  the
Electric Assets and the Electric Project other than the Electric Permitted Liens
shall be released and discharged against and with respect to the Electric Assets
and the Electric Project to the reasonable satisfaction of Buyer.

                 (vi) Buyer shall have  received  consents and waivers and other
documents reasonably  satisfactory to Buyer, pursuant to which all third parties
under the Electric Project Assumed Contracts and Electric project Assumed Leases
have waived or agreed to waive all  breaches  and  defaults by Seller under such
Electric Project Assumed Contracts and Electric Project Assumed Leases.

                 (vii) Buyer shall have received the approval of this  Agreement
and the transaction  that is the subject hereof by the Board of Directors of NEO
Corporation, as a member of Buyer.

                 (viii)  Buyer  shall be  satisfied  with (a) the results of the
legal,  accounting  and business  due  diligence  investigation  of the Electric
Assets and the  Electric  Project  which  will be  performed  by its  attorneys,
accountants and  representatives,  and the  performance of the Electric  Project
prior to  Closing  and (b) that all legal  and  administrative  proceedings  and
actions  related  to  the  approval  of  this  Agreement  and  the  transactions
contemplated  hereby have been fully and completely  satisfied in such manner as
to vest in Buyer good and  marketable  title to the  Electric  Assets,  free and
clear of all liens,  claims and encumbrances (other than any such lien, claim or
encumbrance  which  comprises  either an Electric  Permitted Lien or an Electric
Project   Assumed   Liability)  upon  the   consummation  of  the   transactions
contemplated hereby.

                 (ix) NEO Yolo shall have  received a bill of sale,  in form and
substance  reasonably  satisfactory  to NEO Yolo,  duly  executed by Yolo Gasco,
conveying  all of Yolo Gasco's  rights,  title and interest in and to all of the
Gas Assets to NEO Yolo.

                 (x) Buyer shall have  entered  into (a) a Standard  Offer No. 1
Power Purchase  Agreement in form and substance  satisfactory  to Buyer with SCE
for purchase of electric  power from the Electric  Project,  (b) a  transmission
agreement  in form  and  substance  satisfactory  to  Buyer  with  PG&E  for the
transmission  by PG&E to SCE of  electric  power  generated  by  Buyer  from the
Electric Project, and (c) such interconnection,  scheduling and other agreements


                                      102


with either PG&E or SCE, or both,  as may be  reasonably  required by Buyer with
respect to the  transmission  and  purchase of electric  power  generated by the
Electric Project as set forth above.

                 (xi)  Buyer  shall  have   received   from  Seller  such  other
documents,  instruments, writings and actions as may. be reasonably requested by
Buyer or its legal counsel to confirm to Buyer  marketable title to the Electric
Assets,  the Electric  Project and the  agreements  with SCE, PG&E and all other
third  parties  other than NEO Yolo or Yolo Gasco  required  for the  profitable
operation of the Electric Project as contemplated herein.

                 (xii) Buyer shall have received from EMCON an agreement in form
and substance  satisfactory  to Buyer  pursuant to which EMCON agrees to use its
best efforts to assist Buyer and NEO Yolo to negotiate with and obtain from Yolo
County an amended and restated  Production  Agreement in which Yolo County would
agree to reduce the  compensation  payable  to it  pursuant  to such  Production
Agreement to a level of compensation that is satisfactory to Buyer and NEO Yolo.

                 (xiii) The  concurrent  closing of the  purchase by NEO Yolo of
the Gas Assets and the Gas Project from Yolo Gasco.

             (b)  The  obligations  of  Seller  hereunder  are  subject  to  the
fulfillment  to the reasonable  satisfaction  of Seller of each of the following
conditions prior to or at the Closing:

                 (i) Buyer shall have  performed and complied with all covenants
and conditions,  and shall have made all deliveries,  required by this Agreement
to be  performed  or  complied  with by Buyer prior to or at the Closing and the
representations  and  warranties  of Buyer  shall be true  and  accurate  in all
material respects as of the Closing.

                 (ii) On the Closing Date,  neither  Seller nor Buyer shall be a
party to, nor will there otherwise be pending, .any judicial,  administrative or
other action, proceeding or investigation (other than any such action brought by
Seller) seeking to enjoin or restrain the transactions  contemplated hereby, and
there will not be in effect any injunction, writ, temporary restraining order or
any order of any nature  issued by a court of competent  jurisdiction  directing
that any transactions Provided for herein not be consummated as so provided.

         11. NEO YOLO'S AND THE YOLO GASCO'S CONDITIONS OF CLOSING.

             (a) The  obligations  of NEO  Yolo  hereunder  are  subject  to the
fulfillment to the reasonable  satisfaction of NEO Yolo of each of the following
conditions prior to or on the Closing Date:

                 (i) Yolo  Gasco  shall have  performed  and  complied  with all
covenants and conditions,  and shall have made all deliveries,  required by this
Agreement  to be  performed  or  complied  with by Yolo Gasco prior to or at the
Closing and the  representations of Yolo Gasco shall be true and accurate in all
material respects as of the Closing.

                 (ii) On the Closing Date, neither Yolo Gasco nor NEO Yolo shall
be a party to, nor will there otherwise be pending, any judicial, administrative
or other action, proceeding or investigation (other than any such action brought
by NEO Yolo) seeking to enjoin or restrain the transactions contemplated hereby,
and there  will not be in effect any  injunction,  writ,  temporary  restraining
order or any order of any  nature  issued by a court of  competent  jurisdiction
directing  that any  transactions  Provided for herein not be  consummated as so
provided.



                                      103


                 (iii) NEO Yolo shall have received executed counterparts of any
consents,  releases and other documentation,  including such consents,  releases
another documentation, including such consents, releases and other documentation
as are reasonably  satisfactory  to NEO Yolo from the parties listed on Schedule
11(a)(iii),  required  to  permit  Yolo  Gasco  and NEO Yolo to  consummate  the
transactions  contemplated by this Agreement and to vest in NEO Yolo all of Yolo
Gasco's  right,  title and interest in the Gas Assets,  in  accordance  with the
provisions of this Agreement.

                 (iv) There shall have  occurred no material  adverse  change in
the operations of the Gas Project, or the condition of the Gas Assets during the
period from the date hereof to the Closing  Date,  except for ordinary  wear and
tear  and  maintenance  and  repair  of the Gas  Assets.  For  purposes  hereof,
"material adverse change" shall include,  without  limitation,  (a) any material
breach by any party under a material contract to which Yolo Gasco is a party, by
which Yolo Gasco is bound or to which the Gas Assets are  subject  which cause a
material  diminution  in value of the Gas Project,  and the Gas Assets,  (b) any
material   adverse   change  in   relationships   with   licensees,   suppliers,
distributors,  customers or others having material business  relationships  with
Yolo Gasco which  causes a material  diminution  in value of the Gas Project and
the Gas Assets, (c) any sale or other disposition of any of the Gas Assets other
than in the ordinary course of business,  (d) any further encumbrance of any Gas
Assets,  and (e) any  modification,  amendment  or  cancellation  of any of Yolo
Gasco's  existing  commitments,  contracts  or  agreements  relating  to the Gas
Project  or the  Gas  Assets,  or the  entering  into  of any  new  commitments,
contracts or agreements other than in the ordinary course of business.

                 (v) All liens,  claims and encumbrances upon or against the Gas
Assets and the Gas Project  shall be released  and  discharged  against and with
respect to the Gas Assets and the Gas Project, to the reasonable satisfaction of
NEO Yolo.

                 (vi) NEO Yolo shall have  received  consents  and  waivers  and
other documents reasonably  satisfactory to NEO Yolo pursuant to which all third
parties under the Gas Project  Assumed  Contracts and Gas Project Assumed Leases
have waived or agreed to waive all breaches and default by Yolo Gasco under such
Gas Project Assumed Contracts and Gas Project Assumed Leases.

                 (vii)  NEO  Yolo  shall  have  received  the  approval  of this
Agreement  and the  transactions  that is the  subject  hereof  by the  Board of
Directors of NEO Corporation, the sole shareholder of NEO Yolo.

                 (viii) NEO Yolo shall be satisfied  with (a) the results of the
legal, accounting and business due diligence investigation of the Gas Assets and
the Gas  Project  which will be  performed  by its  attorneys,  accountants  and
representatives, and the performance of the Gas Project prior to Closing and (b)
that all  legal  and  administrative  proceedings  and  actions  related  to the
approval of this Agreement and the  transactions  contemplated  hereby have been
fully and  completely  satisfied  in such manner as to vest in NEO Yolo good and
marketable  title to the Gas  Assets,  free and clear of all  liens,  claims and
encumbrances upon the consummation of the transactions contemplated hereby.

                 (ix) NEO Yolo shall have  received a bill of sale,  in form and
substance  reasonably  satisfactory  to NEO Yolo,  duly  executed by Yolo Gasco,
conveying  all of Yolo Gasco's  rights,  title and interest in and to all of the
Gas Assets to NEO Yolo.

                 (x) The  receipt by NEO Yolo of an  agreement  between NEO Yolo
and EMCON in which NEO Yolo shall have the right,  at its sole  option to retain
EMCON (i) to install additional landfill gas collection wells at the Yolo County


                                      104


Central  Landfill  at a cost  not to  exceed  $3,250  per  well  for the  period
commencing  with the Closing  Date and  continuing  for a period  ending  twelve
months from the Closing  Date and (ii) to perform  operations,  maintenance  and
repair  services with respect to the landfill gas collection  system at the Yolo
County Central Landfill at either a fixed price or at hourly rates, as set forth
in such  agreement  that  are 75% of the  normal  fixed  price or  hourly  rates
published and billed to other clients by EMCON for  comparable  services for the
period  commencing on the Closing Date and continuing for a period ending twelve
months from the Closing Date.

                 (xi) NEO Yolo  shall have  received  from Yolo Gasco such other
documents,  instruments,  writings and actions as may be reasonably requested by
NEO Yolo or its legal counsel to confirm to NEO Yolo marketable title to the Gas
Assets and the Gas Project,  including any  agreements  with third parties other
than Seller or Buyer required for the Gas Project as contemplated herein.

                 (xii) The  concurrent  closing of the  purchase by Buyer of the
Electric Assets and Electric Project from Buyer.

             (b) The  obligations  of Yolo Gasco  hereunder  are  subject to the
fulfillment  to the  reasonable  satisfaction  of  Yolo  Gasco  of  each  of the
following conditions prior to or at the Closing:

                 (i) NEO  Yolo  shall  have  performed  and  complied  with  all
covenants and conditions,  and shall have made all deliveries,  required by this
Agreement  to be  performed  or  complied  with by NEO  Yolo  prior to or at the
Closing and the  representations  and  warranties  of NEO Yolo shall be true and
accurate in all material respects as of the Closing.

                 (ii) On the Closing Date,  neither Yolo Gasco or NEO Yolo shall
be a party to, nor will there otherwise be pending, any judicial, administrative
or other action,  proceeding or investigation  seeking to enjoin or restrain the
transactions   contemplated  hereby,  and  there  will  not  be  in  effect  any
injunction,  writ, temporary restraining order or any order of any nature issued
by a court of competent  jurisdiction  directing that any transactions  provided
for herein not be consummated as so provided.

                 (iii) The receipt from Seller of an  agreement  with Yolo Gasco
on terms and conditions and in a form  satisfactory  to Yolo Gasco providing for
(a) the settlement of outstanding  claims between Seller and Yolo Gasco, and (b)
such other matters as maybe agreed upon between Seller and Yolo Gasco.

         12. COVENANTS OF SELLER.

             (a) Seller  hereby  covenants  and agrees that,  from and after the
date hereof and until the Closing Date:

                 (i)  Seller  shall   provide  full  access  to  Buyer  and  its
representatives  to all of its  properties,  books,  contracts,  commitments and
records  concerning  the Electric  Assets and the Electric  Project  (other than
privileged  attorney-client  communications  and privilege attorney work product
relating to the Electric Assets and the Electric Project) and shall furnish such
information relating thereto as Buyer may reasonably request.

                                      105


                 (ii)  Seller  will  notify  Buyer   regarding  any  significant
developments,  transactions  and proposals  relating to the Electric Project and
the Electric Assets,  other than in the ordinary course of business as conducted
as of the date  hereof.  In  particular,  Seller will notify  Buyer of any event
that, to Seller's  actual  knowledge,  occurs prior to the Closing Date that (a)
would have required  disclosure in a Schedule or Exhibit to this Agreement if it
had occurred prior to the date hereof or (b) could reasonably cause a failure of
any condition set forth in Section 10(a) hereof.

         13. COVENANTS OF YOLO GASCO.

             (a) Yolo Gasco hereby covenants and agrees that, from and after the
date hereof and until the Closing Date:

                 (i) Yolo Gasco  shall  provide  full access to NEO (Y) Yolo and
its representatives to all of its properties, books, contracts,  commitments and
records  concerning the Gas  Assets-and  the Gas Project (other than  privileged
attorney-client  communications and privileged attorney work product relating to
the Gas Assets and the Gas Project) and shall furnish such information  relating
thereto as NEO (Y) Yolo may reasonably request.

                 (ii) Yolo Gasco will notify NEO Yolo regarding any  significant
developments, transactions and proposals relating to the Gas Project and the Gas
Assets,  other than in the  ordinary  course of business as  conducted as of the
date hereof. In particular,  Yolo Gasco will notify, NEO Yolo of any event that,
to Yolo  Gasco's  actual  knowledge,  occurs  prior to the Closing Date that (a)
would have required  disclosure in a Schedule or Exhibit to this Agreement if it
had occurred prior to the date hereof,  or (b) could  reasonably cause a failure
of any condition set forth in Section Il(a) hereof.

         14. TAXES; PREPAID ITEMS; PRORATIONS; EXPENSES.

             (a)  Buyer  shall pay all  income,  franchise  and other  taxes and
charges,  if any,  arising out of Buyer's  ownership of the  Electric  Assets or
operation  of the  Electric  Project  after the Closing  Date.  Except as may be
included  in the  Electric  Project  Assumed  Liabilities  or  under  assumption
agreements, assignment agreements or consents to assignment executed by Buyer in
connection  herewith,  Buyer  shall not pay nor be  responsible  for any income,
franchise,  sales,  use and other  taxes and  charges,  if any,  arising  out of
Seller's  ownership of the Electric Assets or operations of the Electric Project
prior to and through the Closing Date.

             (b) NEO Yolo shall pay all  income,  franchise  and other taxes and
charges,  if any,  arising  out of NEO  Yolo's  ownership  of the Gas  Assets or
operation of the Gas Project after the Closing  Date.  Except as may be included
in  the  Gas  Project  Assumed  Liabilities  or  under  assumption   agreements,
assignment  agreements  or  consents  to  assignment  executed  by NEO  Yolo  in
connection  herewith,  NEO Yolo shall not pay nor be responsible for any income,
franchise,  sales,  use or other taxes and charges,  if any, arising out of Yolo
Gasco's  ownership of the Gas Assets or  operations  of the Gas Project prior to
and through the Closing Date.

             (c)  Property  taxes and the payment for  easement  rights to James
Fitzgerald  Kelly and Thomas  Ross Kelly as  co-trustees  of the  Margaret  Ross
Noonan Kelly  Irrevocable Trust dated March 14, 1990 shall be prorated as of the


                                      106


Closing Date.  All rights of Seller and Yolo Gasco to any refund or reduction in
assessment of taxes, whether existing before or after the Closing Date, shall be
transferred  by Seller and (Y) Yolo  Gasco to Buyer and NEO Yolo at the  Closing
Date. Such  prorations  shall occur on the Closing Date or as soon thereafter as
is reasonable practicable.

             (d) Each of the parties  shall pay its own  expenses in  connection
with this Agreement and the  transactions  contemplated  hereby.  The expense of
furnishing documents required under this Agreement shall be borne by the parties
which is obligated to furnish the same.

         15. ATTORNEYS;  FEES. If any action be instituted  between or among any
of the  parties  to  enforce  any of  the  provisions  of  this  Agreement,  the
prevailing  party  shall  be  entitled  to  recover  any  expenses  incurred  in
connection with such dispute,  including reasonable  accountants' and attorneys'
fees.

         16. MISCELLANEOUS.

             (a) Buyer  and NEO Yolo each  acknowledge  that  after the  Closing
Seller will have no substantial  assets.  As a result  thereof,  any recovery of
monetary  damages or relief against Seller for any breach of any  representation
or covenant,  or the inaccuracy of any warranty,  under this Agreement  would be
substantially unlikely and speculative. Notwithstanding the foregoing, Buyer and
NEO Yolo each hereby  waives any claims it may have had  against  the  officers,
directors and/or  shareholders of Seller under "piercing the corporate veil" and
other similar theories for any such breach or inaccuracy.

             (b) If the Closing Date has not occurred on or before  December 31,
1996,  any of the parties may terminate  this  Agreement by giving notice of its
election to terminate this Agreement to the other parties in accordance with the
provisions hereof.

             (c) All  Exhibits  and  Schedules  referred to and attached to this
Agreement are hereby  incorporated into and by this reference made apart of this
Agreement.  Disclosure of  information on any of the Schedules to this Agreement
shall be regarded  for all purposes as  disclosure  of such  information  on any
other Schedule for which such information is relevant. This Agreement, including
all such Exhibits and Schedules,  and any agreements and documents  delivered or
entered into in connection  herewith  constitute  the complete  agreement of the
parties   hereto  and  supersede  all   negotiations,   prior   agreements,   or
understandings  between or among the  parties,  and no term or provision of this
Agreement may be altered, amended or waived except by a writing signed by Buyer,
Seller,  Yolo Gasco and NEO Yolo.  The failure of any party hereto to enforce at
any time any provision of this  Agreement  shall not be construed as a waiver of
such  provision,  nor in any way to affect the validity of this Agreement or any
part hereof or the right of any such party  thereafter to enforce each and every
such  provision.  No waiver of any breach of this Agreement  shall  constitute a
waiver of any other or subsequent breach or a continuing waiver.

             (d) This  Agreement  shall be binding upon and inure to the benefit
of,  and be  enforceable  by, the  respective  representatives,  successors  and
assigns of Buyer, Seller, Yolo Gasco and NEO Yolo.

             (e) This Agreement may be executed in several counterparts, each of
which shall be deemed an original, but all of which shall constitute one and the
same instrument.



                                      107


             (f) The subject  headings of the  Paragraphs of this  Agreement are
included for purposes of convenience only and shall not affect the constructions
or interpretation of any of its provisions.

             (g) Each party agrees to pay any  brokerage  commission or finder's
fee  which  may be due on  account  of the  transactions  contemplated  by  this
Agreement  to any broker or finder  employed or retained by it, and to indemnify
and hold the other party  harmless  from all  liabilities,  expenses  (including
reasonable  attorneys~ fees),  damage and claims arising from any claim for such
commission or fees.

             (h) All  notices  or other  communications  required  or  permitted
hereunder shall be in writing and shall be given by hand or by registered  mail,
return receipt requested, addressed as follows:

           If to Seller:
                                            Yolo Energy Partners, Inc.
                                            P.O. Box 1186
                                            Frazier, CA 19355
                                            Attn: Theodore H. Van Buren,
                                            President

         With a copy to:
                                            Sommer & Barnard, PC
                                            4000 Bank One Tower
                                            111 Monument Circle
                                            P.O. Box 44363
                                            Indianapolis, IN 46244
                                            Attn.' Robert J. Hicks, Esq.

         If to Buyer:
                                            Minnesota Methane LLC
                                            c/o NEO Corporation
                                            1221 Nicollet Mall, Suite 700
                                            Minneapolis, MN 55403-2445
                                            Attention: President

         If to Yolo Gasco:
                                            Yolo Landfill Gas Corporation
                                            c/o Emcon
                                            400 S. El Camino Real, Suite 1200
                                            San Mateo, CA 94402
                                            Attention: R. Michael Momboisse
                                            Chief Financial Officer

 
         If to Emcon:
                                            Emcon
                                            400. S. El Camino Real, Suite 1200
                                            San Mateo, CA 94402
                                            Attention: R. Michael Momboisse

                                      108


         If to NEO Yolo:
                                            Yolo NEO LLC
                                            c/o NEO Corporation
                                            1221 Nicollet Mall, Suite 700
                                            Minneapolis, MN 55403-2445
                                            Attention: President

             (i) In case  one or more  provisions  of this  Agreement  shall  be
invalid,  illegal or  unenforceable in any respect under any applicable law, the
validity,  legality and  enforceability  of the remaining  provisions  contained
herein  shall not be affected or impaired  thereby and the parties  hereto shall
enter into an  agreement  amending  such  provision in such manner as to make it
valid,  legal and enforceable while retaining the original intent of the parties
with respect to such provision.

             (j) This Agreement shall be governed by and construed in accordance
with the laws of the State of California.

             (k) Time is of the essence as to the provisions of this Agreement.

             (l) This Agreement shall terminate and shall be of no further force
or effect upon mutual agreement of the parties. No termination of this Agreement
shall release, or be construed as releasing, any party hereto from any liability
or  damage to the other  party  hereto  arising  out of, in  connection  with or
otherwise  relating to, directly or indirectly,  such party's  material  breach,
such party's  material  default or such party's failure in performance of any of
its material covenants, agreements, duties or obligations arising hereunder.

             (m) Each party hereto intends that this Agreement shall not benefit
or create  any right or cause of action in or on behalf of any  person or entity
other than the parties hereto.

             (n)  This  Agreement  may  be  executed  in   counterparts,   which
counterparts, taken collectively, shall constitute one and the same document.

                                      109


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

                               SELLER:

                               YOLO ENERGY PARTNERS, INC.
                               an Indiana Corporation

                               By:     /s/Theodore H. Van Buren
                                       --------------------------
                               Name:   Theodore H. Van Buren
                               Title:  President

                               BUYER:

                               Minnesota Methane LLC
                               a Wyoming limited liability company

                               By:     /s/Peter D. Jones
                                       ---------------------------
                               Name:   Peter D. Jones
                               Title:  Director

                               YOLO LANDFILL GAS CORPORATION
                               a California Corporation

                               By:     /s/R. Michael Momboisse
                                       ---------------------------
                               Name:   R. Michael Momboisse
                               Title:  CFO & Vice President Legal

                               YOLO NEO LLC
                               a Delaware Limited Liability Company

                               By:      /s/Peter D. Jones
                                        --------------------------
                               Name:    Peter D. Jones
                               Title:   Manager

                               EMCON
                               a California Corporation

                               By:      /s/R. Michael Momboisse
                                        --------------------------
                               Name:    R. Michael Momboisse
                               Title:   CFO & Vice President Legal




                                      110