EMCON
10-K, 1997-03-31
ENGINEERING SERVICES
Previous: MEDSTONE INTERNATIONAL INC/, 10-K, 1997-03-31
Next: FMG RITA RANCH LIMITED PARTNERSHIP, 10-K405, 1997-03-31



                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM 10-K


(Mark One)

[X]  ANNUAL REPORT  PURSUANT TO SECTION 13 OR 15(d) OF THE  SECURITIES  EXCHANGE
     ACT OF 1934 [FEE REQUIRED]

     For the fiscal year ended December 31, 1996

                                       OR

[ ]  TRANSITION  REPORT  PURSUANT  TO  SECTION  13 OR  15(d)  OF THE  SECURITIES
     EXCHANGE ACT OF 1934

                         Commission file number 0-16225
                                      EMCON
             (Exact name of Registrant as specified in its charter)

         California                                              94-1738964
(State or other jurisdiction of                               (I.R.S. Employer
incorporation of organization)                                Identification No.

400 South El Camino Real
Suite 1200
San Mateo, California                                               94402
(Address, of principal executive offices)                         (Zip Code)

Registrant's telephone number, including area code (415) 375-1522

Securities registered pursuant to Section 12(b) of the Act:
                                                          Name of each exchange
       Title of each class                                  on which registered
       -------------------                                ---------------------
             None                                                   None

Securities registered pursuant to Section 12(g) of the Act:

                                  Common Stock
                                (Title of Class)

     Indicate  by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
Registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes X No ____




                                       1
<PAGE>




Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ X ]

The  aggregate  market  value  of the  voting  stock of the  Registrant  held by
non-affiliates of the Registrant, based on the closing price of the Registrant's
Common  Stock as quoted  by the  National  Association  of  Securities  Dealers'
Automated  Quotation  System on February 28,  1997,  was  $16,410,000  Shares of
Common Stock held by each officer and director and by each person who owns 5% or
more of the outstanding Common Stock have been excluded in that such persons may
be  deemed to be  affiliates.  This  determination  of  affiliate  status is not
necessarily a conclusive determination for other purposes.

The number of shares of the Registrant's Common Stock outstanding as of February
28, 1997, was 8,543,012.

                       DOCUMENTS INCORPORATED BY REFERENCE

Parts of the  Registrant's  definitive  proxy  statement  to be  filed  with the
Commission within 120 days of the end of Registrant's fiscal year ended December
31, 1996 are incorporated by reference in Part III of this Form 10-K.

The Index to Exhibits appears on pages 41 of this Report. This Report, including
all exhibits and attachments, contains 127 pages.





                                       2
<PAGE>






                                TABLE OF CONTENTS

PART I                                                                   PAGE
  Item  1:    Business.................................................    4

  Item  2:    Properties...............................................    10

  Item  3:    Legal Proceedings........................................    10

  Item  4:    Submission of Matters to a Vote of Security Holders......    10

PART II
  Item  5:    Market for the Registrant's Common Equity and Related
               Stockholder Matters.....................................    11

  Item  6:    Selected Financial Data..................................    12

  Item  7:    Management's Discussion and Analysis of Financial
               Condition and Results of Operations.....................    12

  Item  8:    Financial Statements and Supplementary Data..............    18

  Item  9:    Changes in and Disagreements with Accountants on
               Accounting and Financial Disclosure.....................    37
PART III
  Item 10:    Directors and Executive Officers of the Registrant.......    37

  Item 11:    Executive Compensation...................................    37

  Item 12:    Security Ownership of Certain Beneficial Owners and
                Management.............................................    37

  Item 13:    Certain Relationships and Related Transactions...........    37

PART IV
 Item 14:     Exhibits, Financial Statement Schedules, and Reports
                on Form 8-K............................................    38

              Signatures...............................................    39





                                       3
<PAGE>

                                     PART I

Item 1.       BUSINESS

EMCON (referred to herein as "EMCON" and the "Company")  provides  comprehensive
environmental engineering, design, construction, operations and maintenance, and
equipment fabrication services to a variety of public and private clients. EMCON
is a leader in the design,  construction  and remediation of solid and hazardous
waste  transfer,  storage and disposal  facilities,  having  participated in the
design,  construction  and remediation of several hundred such facilities in the
United  States,  as well as  Argentina,  Canada,  Hong  Kong,  Mexico,  Peru and
Venezuela.   EMCON's  waste  facility   services   include  site  selection  and
evaluation,  facility design,  development of preprocessing and operating plans,
assistance in regulatory  compliance  and  permitting,  final  closure,  end-use
planning and design, construction, and operations and maintenance. The Company's
services also include the  development  of programs  dealing with  environmental
assessments and remediation of contaminated  sites, as well as services  related
to applied sciences such as fuel spill damage assessment, marine fate-and-effect
studies and natural resource damage assessment. The Company's professional staff
includes chemical, civil, geotechnical, mechanical, electrical and environmental
engineers; marine and terrestrial biologists;  oceanographers; plant ecologists;
chemists;   geologists;   hydrogeologists;   hydrologists   and   toxicologists.
References  to the  Company  and  EMCON in this  report  include  the  Company's
subsidiaries, unless the context indicates otherwise.

On February  29,  1996,  EMCON  acquired all the  outstanding  capital  stock of
Organic  Waste  Technologies,  Inc.  ("OWT"),  a  Cleveland-based  construction,
equipment and operations and maintenance  company with significant  expertise in
solid  waste  management.  OWT was  subsequently  integrated  into  and is now a
significant component of the Company's Operation and Construction  Division. The
Company  purchased OWT for  $13,859,000 in cash plus the issuance of convertible
notes and other contractual  obligations to pay certain senior OWT management in
the aggregate  principal amount of $1,747,000.  The notes and other  contractual
obligations  to pay bear  interest  payable at the rate of 8% per annum with all
principal due and payable in full on March 1, 2001. The above obligations may be
converted into shares of OWT common stock upon an  underwritten  public offering
of OWT's  common stock in an amount in excess of  $10,000,000.  In the event the
notes have not been converted into OWT shares they may instead be converted into
shares of EMCON  common  stock for a period of ninety  days after  November  30,
2001, at a conversion price of $6.50 per share.

The Company, through its wholly owned subsidiary,  Columbia Analytical Services,
Inc.  ("CAS"),  also operates a full-service,  integrated  network of analytical
laboratories in Alaska, Arizona,  California,  Florida, New York and Washington.
On December 31, 1996,  the Company  signed a Letter of Intent to sell CAS to the
CAS employees  for cash,  notes and other  consideration  valued,  in total,  at
approximately  $7.5  million.  The sale is expected to close prior to the end of
the first quarter of 1997. In anticipation  of the sale, the Company  recognized
an impairment in its investment in CAS of $3,327,000; including, a write-down in
the carrying value of goodwill associated with previous laboratory  acquisitions
of $1,426,000.

On December  31,  1996,  the  Company  completed  the sale of its Yolo  landfill
gas-to-energy  project in return for a one-time cash payment in January, 1997 of
$800,000. The Company incurred a loss in 1996 of $88,000 on the sale.






                                       4
<PAGE>


On March  6,  1997,  the  Company  completed  the  sale of its  Marina  landfill
gas-to-energy  project for a net up front cash payment of $800,000.  The Company
is eligible to receive an additional $200,000 prior to December 31, 1997 subject
to certain post-closing  contingencies - specifically,  that no material adverse
changes are made to the provisions of Section 29 of the Internal Revenue Code of
1986, as amended, pertaining to the availability of unconventional fuel credits.

                                    Services

Following  the  sale of CAS,  the  Company  will be  comprised  of two  distinct
operating divisions:  the Professional  Services Division (formerly known as the
Consulting Division);  and the Operations and Construction Division.

                              Solid Waste Services

The Company's  Professional  Services  Division and Operations and  Construction
Division  offer a full range of services  to  operators  of solid and  hazardous
waste transfer,  storage,  recycling, and disposal facilities;  from the design,
permitting  and  construction  of the  facility,  to the  provision of necessary
equipment and components,  to post-closure,  operations and maintenance services
and end-use  planning.  Customers may utilize the full range or a portion of the
Company's services.

Through its  extensive  experience  in  disposal  site  design,  the Company has
developed expertise in three critical areas of waste disposal technology - liner
systems,  leachate  treatment,  and gas  control/recovery  systems.  To  protect
surrounding soil and water, natural and synthetic liners are used to collect and
contain  potentially  hazardous liquids  percolating through the waste that have
been  deposited  at the site  ("leachate").  Leachate is then  collected  on the
surface of the liner,  withdrawn  from the landfill and treated using  physical,
chemical,  evaporative  and/or  biological  methods.  Gas control  and  recovery
systems,  which may be  installed  on active  or closed  landfills,  are used to
control  the  methane  gas  produced  by  decomposing   organic  refuse.   Where
economical,  recovery  systems are designed to extract  methane to generate heat
and/or  electricity,  or in some cases to evaporate leachate using the Company's
patented leachate  evaporation system.  Federal regulation now requires that all
new land disposal  facilities  utilize liners and methane control  systems,  and
that these systems be required to meet increasingly stringent design standards.

EMCON's  services to its clients  often begin with the  evaluation  of potential
disposal  facility sites.  The  hydrogeological  and  geotechnical  staff of the
Professional  Services  Division  evaluate  soils,  groundwater  occurrence  and
quality,  seismic stability and potential flooding at possible locations,  while
other professionals analyze operational  considerations,  such as proximity of a
site  to  water  sources,  visibility  to the  public  and  estimated  operating
expenses. Once desirable sites are identified,  the Company assists in obtaining
regulatory  approvals  by  drafting  environmental  impact  reports  and  permit
applications, appearing at hearings and negotiating with government agencies.

EMCON performs detailed cost/benefit analyses of design alternatives,  using, if
possible,  natural  features of the site to reduce cost.  EMCON engineers design
the waste disposal facility, considering such factors as the volume and types of
material  to be  disposed  at the site,  land use and  public  policy,  physical
characteristics  of the site and regulatory  requirements.  EMCON identifies the
type of natural or synthetic  liners which are  appropriate  or required for the
site and designs  the  monitoring  systems,  landfill  gas  control  systems and
leachate  recovery and  treatment  systems.  EMCON also  monitors  statutory and
regulatory  developments,  and assists operators in implementing required design
or  operating  changes  and  preparing   additional   permit   applications  and
environmental reports.

                                       5
<PAGE>

Throughout the construction process, the Professional Services Division performs
services  such  as  preparing  detailed  construction  documents,  assisting  in
contractor  selection,  scheduling and monitoring  work in progress,  performing
construction quality assurance review, review of contractor requests for payment
and assisting with regulatory compliance and permitting. The Company also trains
disposal facility personnel,  performs  environmental  monitoring services,  and
designs site maintenance programs and operating plans.

Where appropriate,  the Operations and Construction Division can perform a broad
range of related services,  including  construction of landfill cells,  landfill
remediation and collection systems, landfill gas flares and control systems, and
leachate  evaporation systems, as well as the capping,  closure,  development of
landfill gas recovery projects,  and long-term  operation and maintenance of old
landfills.

The Operations and  Construction  Division is complimented  by ET  Environmental
Corporation  ("ET"),  a  50/50  joint  venture  between  EMCON  and  The  Turner
Construction   Company   ("Turner").   ET's  charter  is  to  provide  primarily
above-ground  environmental,  remedial and  construction  services on a national
basis,  utilizing the regional  resources of EMCON and Turner. ET is a leader in
the development and construction of solid waste transfer  stations and materials
recovery facilities on a design build basis.

                            Site Restoration Services

EMCON's  environmental  expertise  incorporates  analytical and  risk-assessment
capabilities enabling remediation  specialists to design site-specific solutions
to environmental  compliance and  contamination  problems.  The Company is often
called upon to design and monitor  remediation  plans when corrective  action is
required  at solid or  hazardous  waste  storage or disposal  facilities  and at
commercial or industrial  plant sites.  Problems  which may require  remediation
include  leaching of  hazardous  chemicals  or wastes into  groundwater,  ground
instability  or erosion,  flooding and migration of landfill gas. Work generally
entails  site  reconnaissance,   drilling  exploratory  borings,  and  soil  and
groundwater sampling as part of the assessment program.  Using data collected in
the  assessment  phase of a project,  the  Company  then  defines the nature and
extent  of  the  problem,  develops  a  remediation  program  and  monitors  its
implementation.

The Company generally  approaches such projects by consulting with the client on
the nature and scope of the problem.  Historical  information about the site, if
available,  is reviewed to determine  the most likely  sources and  locations of
contamination.  Information  about the local  geology and  hydrogeology  is also
reviewed to determine potential migration pathways. A detailed work plan is then
prepared  that  describes  the  field  investigation  program  to be  conducted,
including  the number and location of samples to be  collected  and the specific
chemical  analyses to be  performed.  Trained  personnel  then conduct the field
investigation  program,  which may include  drilling  soil  borings,  installing
groundwater  monitoring  wells,  and  collecting  samples of soil,  groundwater,
surface water and/or industrial discharges.

Following laboratory analysis of the various samples collected,  the results are
evaluated by Company engineers and scientists to determine the nature and extent
of contamination at the site.  Depending on the complexity of the site, this may
require more than one round of sampling. Site cleanup levels are then determined
based on the media that have been impacted,  the  contaminants  of concern,  the
intended use of the property, and state and federal regulations. In consultation
with the  client,  various  remediation  alternatives  are then  identified  and
evaluated for  implementability,  effectiveness,  permanence and cost.  Remedial


                                       6
<PAGE>

alternatives  at a site may include the excavation and removal of the sources of
contamination  and  contaminated  soil, the removal and treatment of groundwater
using physical and chemical  treatment  systems,  or the installation of surface
caps and vertical hydraulic barriers.  EMCON also applies in-situ  technologies,
such  as  vapor  extraction  or  bioremediation  as  appropriate,  to  remediate
contaminated  soils  and  ground-water  as a means to reduce  cost and  minimize
disturbance. To assure continued compliance during and after remediation,  EMCON
designs  and  provides   operations  and   maintenance   programs  for  affected
facilities.

Through its ET joint venture with Turner,  the Company is also able to provide a
complete turnkey package to clients,  combining  planning and  implementation of
facility/plant   decommissioning;    remediation   of   soil   and   groundwater
contamination, and lead based paint and asbestos abatement.

                                In-Plant Services

In the last several years the market has seen a significant  trend among many of
the larger  industrial  clients to outsourcing many of their  environmental  and
health and safety compliance requirements. EMCON offers responsive assistance to
the  regulated  community  in a broad  range  of  areas  including  air  quality
regulatory   compliance   through  provision  of  air  quality   assessment  and
engineering  services.  Company  personnel have direct experience in air quality
permitting  under  the  New  Source  Review  (NSR),  Prevention  of  Significant
Deterioration (PSD) and added requirements under the Clean Air Act Amendments of
1990,  preparing  emission  inventories (for criteria and toxic air pollutants),
performing  risk  assessment to evaluate  potential  human and ecological  risk,
evaluating  emission  control  technologies  (BACT/RACT/LAER/MACT),   dispersion
modeling,  ambient  air  quality  and  meteorological  measurements,   pollution
prevention and waste  minimization,  indoor air,  litigation  support and expert
testimony, and compliance audits. EMCON's air quality staff are fully integrated
with  staff  in  other  environmental  disciplines  to  provide  cost  effective
evaluations and compliance  solutions to situations which involve multiple media
contamination.  In addition,  EMCON provides OSHA required  environmental health
and safety training to its clients and other EMCON subsidiaries.

                         Analytical Laboratory Services

Columbia  Analytical  Services,  Inc.  (CAS),  EMCON's  wholly-owned  laboratory
subsidiary,  provides a broad spectrum of analytical services for its clients in
industry  and  government.   Industrial  accounts  include  aerospace,  defense,
electronics,  petroleum, pulp and paper, and waste disposal. CAS is comprised of
a network of analytical laboratories  headquartered in Kelso,  Washington,  with
branches  in  Anchorage,  Alaska;  Phoenix,  Arizona;  Canoga Park and San Jose,
California;  Jacksonville,  Florida; Tuxedo, New York, and Bothell,  Washington.
CAS also  operates  a number of  mobile  laboratories.  With a highly  qualified
staff, a rigorous quality assurance  program,  and  state-of-the-art  analytical
testing equipment,  CAS implements a rigorous quality assurance  program,  which
with  its   state-of-the-art   equipment,   permits  the   provision  of  timely
cost-effective  services  tailored  to the  individual  needs  of  its  clients.
Approximately  25% of CAS  revenues  have been  generated  from  within  EMCON's
Professional Services Division.

In addition to  participation  in the US EPA Water  Pollution  and Water  Supply
programs,  CAS  performs  work for the  Department  of  Defense  under  programs
sponsored by the U.S. Army Corps of Engineers and the U.S.  Navy.  CAS currently
holds  or  has  pending  certifications/accreditations  in a  number  of  states
including Alaska, Arizona, California, Florida, Idaho, Massachusetts,  New York,
Oregon,  Utah  and  Washington.   Other  accreditations   include  the  American
Association  of  Laboratory  Accreditations  (A2LA) and the American  Industrial
Hygiene Associations (AIHA).

                                       7
<PAGE>

On December 31, 1996,  the Company  signed a Letter of Intent to sell CAS to the
CAS employees  for cash,  notes and other  consideration  valued,  in total,  at
approximately  $7.5  million.  The sale is expected to close prior to the end of
the first quarter of 1997. In anticipation  of the sale, the Company  recognized
an impairment in its investment in CAS of $3,327,000;  including a write-down in
the carrying value of goodwill associated with previous laboratory  acquisitions
of $1,426,000.

                              Clients and Marketing

EMCON's  principal clients are industrial  concerns,  predominantly in the waste
disposal,  petroleum, wood products, chemicals and manufacturing industries. The
Company also provides services to utilities, non-regulatory government entities,
and financial  institutions.  No single  client  accounts for 10% or more of the
Company's net revenue.  The Company often enters into master service  agreements
with major clients, which set forth the general terms and conditions under which
EMCON will perform services and which  facilitate  repeated use of the Company's
services.

EMCON focuses significant efforts on providing high quality services in a timely
manner and developing long-term relationships with its clients. EMCON assigns an
experienced project manager to each project to coordinate work undertaken by the
numerous  professionals  from  different  disciplines  within the Company.  This
approach  reduces the time and cost  required to complete a project and relieves
the client of the  responsibility  of  coordinating  the efforts of  independent
consultants.  Because  the  Company  provides a broad  range of  services,  work
performed  for a  client  in one  technical  area  often  leads to work in other
technical areas.

In the last  several  years,  an  increasing  amount  of work has been done on a
competitive  bid basis in response to client  requests for  proposals.  This has
required the dedication of significantly  greater  resources to proposal writing
and  general  business  development,  and the  implementation  of a more  formal
marketing program to share leads and coordinate resources nationwide.

To further  promote its  services,  the Company takes an active role in industry
trade associations to enhance its national  reputation for technical  expertise.
Similarly, EMCON provides services to a wide variety of local, state and federal
government  agencies and  contractors.  Participation  in such contracts  allows
EMCON to remain on the leading  edge of new  technological  developments  and to
publicize its expertise.

                                   Regulation

Public  concern over health,  safety and  preservation  of the  environment  has
resulted in the enactment of a broad range of environmental laws and regulations
by  local,  state  and  federal  lawmakers  and  agencies.  These  laws  and the
implementing  regulations affect nearly every industry,  as well as the agencies
of  federal,  state  and  local  governments  charged  with  their  enforcement.
Recently,   the  level  of  enforcement  has  waned  given  governmental  budget
constraints and a number of environmental laws set for renewal have been allowed
to lapse.  Nonetheless,  those laws and regulations still in force will continue
to  stimulate  demand  for the kinds of  services  offered  by EMCON.  They also
subject the Company to stringent regulation in the conduct of its operations.

                        Potential Liability and Insurance

The Company's work involves assisting clients in handling, storing and disposing
of  hazardous  materials,  toxic  wastes  and other  pollutants,  as well as the
remediation  of existing  contamination.  The Company  therefore is exposed to a
significant risk of professional liability for environmental damage and personal
injury.

                                       8
<PAGE>

EMCON maintains health and safety and quality assurance/quality control programs
to  reduce  the  risk of  potential  damage  to  persons  and  property  and the
associated   potential  liability.   In  addition,   EMCON  currently  maintains
professional  liability  insurance  (covering  damages  resulting from negligent
acts,  errors,  mistakes  or  omissions  in  rendering  or failing to render its
professional  services)  as  well  as  commercial  general  liability  insurance
(covering bodily injury and property damage).

EMCON endeavors contractually to limit its potential liability to the amount and
terms of its  insurance  policies,  and to be  indemnified  by its clients  from
potential liability to third parties. However, the Company is not always able to
obtain such  limitations on liability or  indemnification,  and such provisions,
when  obtained,   may  not  adequately   shelter  the  Company  from  liability.
Consequently,  a partially or completely  uninsured  claim, if successful and of
sufficient  magnitude,  could have a material  adverse effect on the Company and
its financial condition and results of operations.

Although the  liabilities  arising out of  environmental  laws are more directly
applicable  to the Company's  clients,  such laws could,  under certain  factual
circumstances,  apply to some of the  activities  pursued by the  Company in the
course of business,  including failure to properly design a cleanup,  removal or
remedial  action  plan or failure  to  achieve  required  cleanup  standards  in
compliance  with  such laws and  standards.  Such  liabilities  can be joint and
several where other parties are involved. Because much of the Company's business
is  generated  either  directly or  indirectly  as a result of federal and state
governmental   programs  and  regulations,   changes  in  governmental  policies
affecting such programs, or regulations or administrative  actions affecting the
funding or sponsorship of such programs, could have a material adverse effect on
the Company's business. See Item 3 - Legal Proceedings.

                                   Competition

EMCON competes  directly with a wide variety of national and local  engineering,
consulting,  construction,  equipment,  and operations and maintenance companies
which offer services similar to those provided by the Company.  However, many of
these  competitors  are only engaged in certain  segments of the industry and do
not provide the broad range of services  provided by the  Company.  In addition,
the  Company  competes   indirectly  with  remediation   companies  which  offer
environmental  consulting and engineering  services,  as well as transportation,
storage or disposal  capabilities  generally not provided by EMCON.  The Company
believes  that the  principal  competitive  factors in its  industry  are price,
reputation, technical proficiency, management experience and breadth of services
offered. The industry has also experienced a significant amount of consolidation
activity.  Management  anticipates  that  these  trends  will  continue  for the
foreseeable future.

                                    Employees

As of December 31, 1996, the Company had a total of 1,057 employees,  including:
454 professionals;  279 technical personnel;  and 324 administrative and support
personnel.   The  Company's   professional  staff  includes   chemical,   civil,
geotechnical,  mechanical,  electrical and environmental  engineers;  marine and
terrestrial biologists;  oceanographers; plant ecologists; chemists; geologists;
hydrogeologists;  hydrologists  and  toxicologists.  The  Company's  ability  to
attract and retain qualified engineers, scientists and other professionals is an
important factor in determining its future success. EMCON's employees have never
been  represented  by a union,  and the Company  believes its relations with its
employees are good.

                                       9
<PAGE>

                                     Backlog

The Company  estimates  that at  December  31,  1996,  the backlog of future net
revenue from  contracts in existence and orders  believed to be firm  (excluding
CAS) was in excess  of $80  million,  all of which is  expected  to be  received
within the next twelve months,  compared to $55 million  backlog at December 31,
1995. However, there can be no assurance that this work will not be postponed or
canceled.  Furthermore, a substantial portion of the Company's work is performed
pursuant to agreements by which the Company is compensated for time and expenses
devoted to projects with indefinite lives.

Item 2.       PROPERTIES

The  Company's  corporate  office,  located in San Mateo,  California,  occupies
approximately  3,000 square feet and is leased through July, 2001. The Company's
accounting center,  located in Sacramento,  California,  occupies  approximately
4,000 square feet and is leased through December 31, 1997.

The  Company  owns a 25,000  square-foot  building  in  Kelso,  Washington.  The
facility  includes  office  and  warehouse  space and  currently  houses the CAS
corporate operations.

The Company  leases  office,  warehouse  and  laboratory  space in a total of 72
facilities  located  in  Alaska,  Arizona,  California,   Connecticut,  Florida,
Georgia, Illinois, Iowa, Maine, Massachusetts, Michigan, Nevada, New Jersey, New
York, Ohio,  Oregon,  Pennsylvania,  Puerto Rico, Texas,  Vermont,  Virginia and
Washington  under leases expiring at various times through  December 2002. These
facilities have a combined area of approximately 482,000 square feet.

Item 3.       LEGAL PROCEEDINGS

As a firm  engaged in  environmental-related  matters,  the  Company  encounters
potential liability,  including claims for significant  environmental damage, in
the normal course of business.  The Company is party to lawsuits and is aware of
potential  exposure related to certain claims. In the fourth quarter of 1996 the
Company agreed to settlement terms on a number of outstanding legal matters.  At
the same time the Company assessed the potential  exposure relative to all other
known pending matters.  Based on the foregoing,  the Company increased its legal
reserve by an additional $1,553,000. In the opinion of management the resolution
of all known  lawsuits/claims at amounts in excess of established  reserves will
not have a material adverse affect on the Company's financial position,  results
of operations or cash flows.

Item 4.       SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

There were no matters  submitted  to a vote of the security  holders  during the
fourth quarter of the fiscal year ended December 31, 1996.



                                       10
<PAGE>




                                     PART II

Item 5.        MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
               MATTERS

The Company's  common stock is traded on the NASDAQ National Market System under
the symbol MCON. The following  table sets forth the quarterly range of high and
low bid quotations per quarter for 1996 and 1995:
- -------------------------------------------------------------------------------
                                                 High              Low
- -------------------------------------------------------------------------------
January 1 - March 31, 1995                      $4.50             $3.00
April 1 - June 30, 1995                          5.13              3.75
July 1 - September 30, 1995                      6.50              4.00
October 1 - December 31, 1995                    5.00              3.38

January 1 - March 31, 1996                       4.88              4.00
April 1 - June 30, 1996                          5.13              4.13
July 1 - September 30, 1996                      4.13              3.19
October 1 - December 31, 1996                    4.25              3.50
- -------------------------------------------------------------------------------

On February 28, 1997,  there were 579  shareholders  of record of the  Company's
common stock.

Although the Company does make annual distributions to a minority shareholder of
one of the OWT  subsidiaries,  the Company did not pay cash  dividends  to EMCON
shareholders  in 1996 or 1995 and does  not  plan to pay cash  dividends  to its
shareholders in the near future.  Furthermore,  the payment of cash dividends is
restricted  by the  Company's  bank  line of  credit  arrangement.  The  Company
presently intends to retain earnings for further development of its business.



                                       11
<PAGE>

Item 6.       SELECTED FINANCIAL DATA

Five Year Financial Highlights
<TABLE>
<CAPTION>

- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                    Years Ended December 31,
                                                        ---------------------------------------------------------------------------
(In thousands, except per share amounts)                        1996           1995            1994            1993           1992
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                         <C>                  <C>           <C>            <C>              <C>
OPERATIONS STATEMENT DATA (a)
Gross revenue ........................................      $ 137,626       $ 122,542       $ 115,638       $  98,612      $  93,438
Net revenue ..........................................        117,705         103,409          95,926          83,062         79,636
Direct expenses ......................................         52,608          39,473          37,307          32,201         29,411
Indirect expenses ....................................         65,844          61,498          59,302          47,528         46,676
Restructuring/other charges ..........................          8,197             (17)          1,958            --             --
Impairment of assets held for sale ...................          3,327            --              --              --             --
Income (loss) from operations ........................        (12,271)          2,455          (2,641)          3,333          3,549
Interest income ......................................            317             369             348             313            588
Interest expense .....................................          1,112             181              66              57             40
Equity in income/(loss) of affiliates ................             39             (74)            (58)           --             --
Income (loss) before provision (benefit) for
   income taxes ......................................        (13,027)          2,569          (2,417)          3,589          4,097
Provision (benefit) for income taxes .................         (2,936)            783            (500)          1,165          1,098
Net income (loss) ....................................        (10,091)          1,786          (1,917)          2,424          2,999
- ------------------------------------------------------------------------------------------------------------------------------------
PER SHARE DATA (a)
Income (loss) per share ..............................      $   (1.19)      $    0.22       $   (0.24)      $    0.33      $    0.40
Shares used in computing income (loss) per
   share .............................................          8,485           8,961           7,919           7,720          7,506
- ------------------------------------------------------------------------------------------------------------------------------------
BALANCE SHEET DATA (a)
Total assets .........................................      $  90,912       $  78,636       $  80,989       $  68,852      $  66,247
Working capital ......................................         34,601          36,313          32,582          36,200         35,491
Noncurrent obligations and deferred income
   taxes .............................................         16,799           1,700           1,348             882          1,773
Shareholders' equity .................................         55,812          65,306          63,059          58,997         56,591
 ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(a)    The Company was involved in several  acquisitions  and mergers during the
       five year  period  presented.  See Note 5 to the  Company's  consolidated
       financial statements.

Item 7.       MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
              AND RESULTS OF OPERATIONS

RESULTS OF OPERATIONS

The following  table sets forth (i) certain items in the Company's  Consolidated
Statements of Operations as a percentage of net revenue and (ii) the  percentage
increase  (decrease)  in the  dollar  amount  of  those  items  for  the  period


                                       12
<PAGE>

indicated.  Net  revenue  is  determined  by  subtracting  the costs of  outside
subcontractor services,  largely drilling contractors and specialized consultant
services,  from gross revenue. Since EMCON's use of subcontractors can vary from
period to period  and the costs of these  services  are passed  directly  to the
Company's  clients,  the Company  believes  that net revenue is a more  accurate
measure of the value of its services.
<TABLE>
<CAPTION>

- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                 Percentage of                        Percentage
                                                                                  Net Revenue                    Increase (Decrease)
                                                                 --------------------------------------          ------------------
                                                                                                                  1996        1995
                                                                                                                  vs.          vs.
Years Ended December 31,                                              1996          1995          1994            1995        1994
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                   <C>           <C>             <C>            <C>         <C>
Net Revenue ..............................................          100.0%         100.0%         100.0%          13.8%       7.8%
Direct Expenses ..........................................           44.7%          38.2%          38.9%          33.3%       5.8%
Indirect Expenses ........................................           55.9%          59.4%          61.8%           7.1%       3.7%
Restructuring/Other Charges ..............................            7.0%            --            2.0%            --        --
Impairment of Assets held for sale .......................            2.8%            --             --             --        --
Income (Loss) from Operations ............................          (10.4%)          2.4%          (2.7%)       (599.8%)      --
Interest Income (Expense), Net ...........................           (0.7%)          0.2%           0.3%        (522.9%)     (33.3%)
Equity in Income/(Loss) of Affiliates ....................             --           (0.1%)         (0.1%)          --        (27.6%)
Income (Loss) before Provision (Benefit) for
   Income Taxes ..........................................          (11.1%)          2.5%          (2.5%)       (607.1%)      --
Provision (Benefit) for Income
  Taxes ..................................................           (2.5%)          0.8%          (0.5%)        475.0%       --
Net Income (Loss) ........................................           (8.6%)          1.7%          (2.0%)       (665.0%)      --
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
Net Revenue:

Net revenue for 1996 increased by 13.8% to  $117,705,000  from  $103,409,000  in
1995.  Excluding  net  revenue  of  $20,596,000  contributed  by  Organic  Waste
Technologies,  Inc. ("OWT"), following its acquisition on February 29, 1996, net
revenue in 1996 totaled $97,109,000, a 6.1% decrease from 1995. The decrease was
primarily   attributable  to  significant   underperformance  of  the  Company's
Professional  Services Division  (formerly known as the Consulting  Division) in
the Alaska,  Washington and Southeast markets,  combined with a general decrease
in revenue following recent reductions in work force throughout the Professional
Services  Division.  The decrease was, to a lesser extent,  also attributable to
particularly  difficult weather  conditions in the Northeast and Northwest areas
during the first quarter.

Net revenue for 1995  increased by 7.8% over net revenue of $95,926,000 in 1994.
The  increase  in net  revenue in 1995 was partly  attributable  to  significant
improvements  in the  Company's  consulting  division in its West and  Southeast
areas. The increase was also due in part to the inclusion of Wehran  Envirotech,
Inc.  ("Wehran")  for all of 1995 as  compared  to all but the first  quarter of
1994,  following its acquisition in April of 1994.  Although Wehran  contributed
net revenue of  $5,472,000  in the  quarter  ended  March 31,  1995,  due to the
underperformance  of  their  Northeast  and  Midwest  operations,   Wehran  only
contributed  an  additional  $3,730,000  in net  revenue in 1995 over 1994.  Net
revenue  was  also  positively  impacted  by the  expansion  of  the  laboratory
division's operations in Florida and Southern California.



                                       13
<PAGE>

Direct Expenses:

Direct expenses in 1996 were  $52,608,000,  a 33.3% increase over $39,473,000 in
direct expenses in 1995.  Excluding  direct expenses of $14,744,000  incurred by
OWT,  direct  expenses in 1996 totaled  $37,864,000,  a 4.1% decrease from 1995.
Direct  expense  includes  compensation  for billable  hours for  technical  and
professional  staff and other project related expenses,  as well as direct labor
and  materials  for in-house  laboratory  testing and  construction  activities.
Excluding OWT, direct expenses,  as a percent of net revenue in 1996,  increased
to 39.0% from 38.2% in 1995;  due largely to relative  increases  in the cost of
labor and materials within the laboratory division.

Direct  expenses in 1995 were up 5.8% over direct  expenses  of  $37,307,000  in
1994.  The increase was due in part to higher  overall  salary costs,  increased
utilization of technical and professional staff, and the inclusion of Wehran for
all of 1995 versus only the last three quarters of 1994 (Wehran  incurred direct
expenses of $7,739,000 and $6,524,000 in 1995 and 1994, respectively). The ratio
of direct expenses to net revenue in 1995 decreased to 38.2% from 38.9% in 1994.

Indirect Expenses:

Indirect  expenses  totaled  $65,844,000  in 1996, an increase of 7.1% over 1995
indirect  expenses of  $61,498,000.  Excluding  indirect  expenses of $3,173,000
incurred by OWT, indirect expenses in 1996 totaled $62,671,000,  a 1.9% increase
over 1995.  Indirect expenses include salary  compensation for nonbillable hours
for professional and technical  staff, and general and  administrative  expenses
such  as  facility  rent,  bonuses,  benefits,  insurance,   depreciation,   and
legal/settlement expenses.  Excluding OWT, indirect expenses as a percent of net
revenue in 1996  increased to 64.5% from 59.4% in 1995; due in part to the above
noted decrease in net revenue, combined with the effect of significant severance
costs and expenses  related to the closing of several small  offices  during the
first nine months of 1996.  In addition,  during the fourth  quarter of 1996 the
Company  increased  reserves  relating  to  pending  litigation  matters  by  an
additional $1,553,000.

Indirect  expenses  in 1995  increased  by 3.7% over 1994  indirect  expenses of
$59,302,000.  The ratio of indirect expenses to net revenue decreased from 61.8%
in 1994  to  59.4%  in  1995,  due to  improved  utilization  of  technical  and
professional  staff as well as  selective  reductions  in force and  other  cost
containment and restructuring measures put in place during the fourth quarter of
1994 and throughout 1995.

Restructuring/Other Charges:

In the  fourth  quarter  of  1996,  senior  management  reviewed  the  Company's
operational and  administrative  functions for the purpose of further  improving
the Company's  competitiveness and overall profitability.  Based on this review,
the  Company's  Board of Directors  approved a strategic  restructuring  plan in
December,  1996 to reposition the Company to fully exploit its core strengths in
engineering,  design,  construction,  operations and maintenance. As a result of
these actions, the Company recognized pre-tax restructuring and other charges of
$1,237,000 and $6,960,000,  respectively.  Included in the restructuring  charge
were $604,000  relating to the closure or downsizing of several  underperforming
offices,  $628,000 related to employee severance and the write-off of employment
contracts for former employees no longer actively participating in the Company's
affairs,  and a $5,000 adjustment to the 1994  restructuring  plan.  Included in


                                       14
<PAGE>

other charges were $4,768,000 related to the write-down in the carrying value of
goodwill associated with the Company's  continuing operating units in accordance
with the Statement of Financial  Accounting  Standards No. 121,  "Accounting for
the  Impairment of Long-Lived  Assets and for  Long-Lived  Assets to Be Disposed
Of", $1,529,000 related to the write-off of idle or disposed of assets, $368,000
related to the write-down of the Company's  landfill gas  production  rights and
related  fixed assets, and $156,000  related to the buyout and  cancellation  of
outstanding  stock  options  to  purchase  approximately  743,000  shares of the
Company's common stock held by employees of the Company. Also, included in other
charges were $139,000 for various other operational costs.

Anticipated savings in 1997 from the restructuring charge alone are estimated to
exceed $1,500,000.  As of December 31, 1996,  $119,000 of the 1996 restructuring
adjustment   has  been  incurred  and   $1,113,000   remains  in  other  accrued
liabilities. All remaining actions are expected to be substantially completed by
the third quarter of 1997.

In October 1994, the Board of Directors  appointed  Eugene M. Herson to serve as
the Company's new President and Chief Executive Officer. Shortly thereafter,  in
December,  1994, the Company's Board of Directors  approved senior  management's
recommendation to implement a restructuring plan designed to improve operational
efficiencies.  Under the plan, the Company  eliminated  substantially all of its
regional  consulting  subsidiaries  in  favor  of  a  divisional  structure.  In
addition,  the Company  consolidated  and  streamlined  all  unnecessary  and/or
redundant  administrative  functions.  As a result  of the  actions  taken,  the
Company recognized a pre-tax  restructuring charge in the fourth quarter of 1994
of $1,181,000.  Of this amount,  $611,000 related to the write-off of employment
contracts for former employees no longer actively participating in the Company's
affairs,  $287,000 related to employee severance,  and $263,000 related to costs
associated with excess  facilities and equipment.  Anticipated  savings from the
1994  restructuring  plan were estimated to exceed $1,000,000 per year. To date,
$1,142,000 of  restructuring  costs have been incurred and adjustments of $5,000
and  ($17,000)  were made to  increase/(reduce)  the  reserve  in 1996 and 1995,
respectively,  to the required remaining balances. At December 31, 1996, $27,000
of accrued  restructuring  costs for write-off of  employment  contracts in 1994
were included in accrued  liabilities in the accompanying  consolidated  balance
sheet.  All remaining  actions are expected to be completed by the first quarter
of 1997.

During the fourth  quarter  of 1994,  the  Company  also  incurred  nonrecurring
charges of $777,000  related to the  write-down of the carrying value of certain
of the Company's  landfill gas  production  rights and of certain  related fixed
assets due to the  reevaluation  of future cash flows  expected to be  generated
from the related projects.

Impairment of Assets Held for Sale:

In December 1996, the Company executed a letter of intent to sell its laboratory
division,  Columbia Analytical  Services,  Inc. ("CAS"), to the employees of CAS
for  cash,  notes  and  other  consideration  valued  in total at  approximately
$7,500,000.  The transaction is expected to be completed by the first quarter of
1997. In anticipation  of the sale, the Company  recognized an impairment in its
investment in CAS of $3,327,000; including a write-down in the carrying value of
goodwill associated with previous laboratory acquisitions of $1,426,000.
For the year ended December 31, 1996, CAS had a loss before taxes of $142,000.

Interest Income:

The Company recorded interest income of $317,000 in 1996 compared to $369,000 in
1995 and $348,000 in 1994.



                                       15
<PAGE>

Interest Expense:

The Company incurred interest expense of $1,112,000 in 1996 compared to $181,000
in 1995. The increase in interest expense in 1996 over 1995 was due primarily to
increases in long-term  debt of  $11,747,000  incurred for purposes of financing
the  acquisition  of OWT in  February  of 1996 and  $5,000,000  for  purposes of
financing the subsequent expansion of OWT's landfill gas-to-energy project.

The  increase  in  interest  expense in 1995 over 1994 was  primarily  due to an
imposition of interest on a one-time state tax assessment  with respect to prior
years.

Income Taxes Provision (Benefit):

The provision  (benefit) for income taxes in 1996 was  ($2,936,000)  compared to
$783,000 for 1995 and  ($500,000)  for 1994. The effective tax rate for 1996 was
(22.5%)  versus  30.5% in 1995 and  (20.7%)  for 1994.  The 1996 tax  benefit is
primarily  due to  the  alternative  minimum  tax  credits  generated  from  the
Company's landfill  gas-to-energy  project and from temporary timing differences
consisting of the restructuring charges,  impairment of assets held for sale and
the legal reserve.

Included in the  Company's  balance sheet at December 31, 1996 are total current
and long-term net deferred tax assets of  $6,455,000.  The full  utilization  of
such  assets is  dependent  upon a number of  factors  including  the  Company's
ability  to  generate  future  profits,  the  successful  implementation  of the
Company's  restructuring plan and the anticipated  reduction in the level of new
tax  credits  generated  from  the  Company's  existing  landfill  gas-to-energy
projects.  Based on these factors,  the Company  believes that it is more likely
than not that the full  benefit of the net  deferred tax assets will be realized
by the Company in due course.

SUBSEQUENT MATTERS

On March  6,  1997,  the  Company  completed  the  sale of its  Marina  landfill
gas-to-energy  project for a net up front cash payment of $800,000.  The Company
is eligible to receive an additional $200,000 prior to December 31, 1997 subject
to certain post-closing  contingencies - specifically,  that no material adverse
changes are made to the provisions of Section 29 of the Internal Revenue Code of
1986, as amended, pertaining to the availability of unconventional fuel credits.

LIQUIDITY AND CAPITAL RESOURCES

Working Capital:

Cash  provided  by  operating  activities  for  fiscal  1996,  1995 and 1994 was
$1,583,000,  $5,232,000,  and  $4,875,000,  respectively.  The  changes  in cash
provided  by  operating  activities  in  1996,  1995  and  1994  were  primarily
attributed to changes in the Company's net income  (loss),  accounts  receivable
and accounts payable and in 1996 and 1995, depreciation and amortization.  Cash,
cash equivalents, and marketable securities decreased to $5,331,000 in 1996 from
$9,952,000 in 1995.

In  conjunction  with  the  acquisition  of  OWT,  the  Company  entered  into a
$20,000,000   secured  credit  agreement  with  its  existing  commercial  bank,
replacing  its  previous  $10,000,000  unsecured  line of credit.  Under the new
agreement,  the  Company  borrowed  $10,000,000  on a term  loan  basis  with an
interest  at a managed  rate not to exceed the prime  rate.  Principal  is to be


                                       16
<PAGE>

amortized  over seven years,  but with any unpaid amount finally due and payable
on June 30,  2001.  The  remaining  $10,000,000  under the Credit  Agreement  is
available  for  working  capital  purposes  (with up to  $5,000,000  also  being
available for non-working capital purposes). The line of credit component of the
Credit Agreement  expires on May 31, 1997. The Company expects to renew the line
of credit component of the Credit Agreement following its expiration. The Credit
Agreement  contains  provisions with respect to the payment of dividends and the
level of capital expenditures and requires the maintenance of specific levels of
working capital, tangible net worth and continued quarterly profitability.  As a
result  of  the  fourth  quarter  loss  in  1996,  the  impact  of  the  related
restructuring  actions  and the  payment of certain  profit  distributions  to a
minority  shareholder  in one of  OWT's  subsidiaries,  the  Company  was not in
compliance with these  covenants at year-end.  However,  the Company  obtained a
waiver from the bank for its non compliance and agreed to related  amendments of
the Credit Agreement  reducing the tangible net worth requirement and permitting
distribution to the minority shareholder in OWT's subsidiary.

Capital Expenditures:

The Company invested  $2,484,000 in 1996 in additions to property and equipment;
mainly computers,  field and laboratory equipment. The Company believes that its
cash on hand and cash  generated  from  operations,  together with its available
bank  financing  will be sufficient  to meet the Company's  capital needs for at
least the next twelve months.



                                       17
<PAGE>


Item 8.       FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

                                                                     Page
                                                                  -----------
Consolidated Statements of Operations for each of
   the three years ended December 31, 1996, 1995, and 1994.......     19

Consolidated Balance Sheets as of December 31, 1996 and 1995.....     20

Consolidated Statements of Shareholders' Equity for each of
   the three years ended December 31, 1996, 1995, and 1994.......     21

Consolidated Statements of Cash Flows for each of the three
   years ended December 31, 1996, 1995, and 1994.................     22

Notes to Consolidated Financial Statements.......................     23

Report of Ernst & Young LLP, Independent Auditors................     36




                                       18
<PAGE>

EMCON
CONSOLIDATED STATEMENTS OF OPERATIONS
<TABLE>
<CAPTION>

 ----------------------------------------------------------------------------------------------------------------------------------
                                                                                               Years Ended December 31,
                                                                                ---------------------------------------------------
 (In thousands, except per share amounts)                                           1996                1995                1994
 ----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                   <C>                <C>                 <C>

Gross revenue .......................................................           $ 137,626            $ 122,542            $ 115,638
Outside services at cost ............................................              19,921               19,133               19,712
                                                                                ---------            ---------            ---------

         Net revenue ................................................             117,705              103,409               95,926

Costs and expenses:
     Direct expenses ................................................              52,608               39,473               37,307
     Indirect expenses ..............................................              65,844               61,498               59,302
     Restructuring/other charges ....................................               8,197                  (17)               1,958
     Impairment of assets held for sale .............................               3,327                 --                   --
                                                                                ---------            ---------            ---------

         Income (loss) from operations ..............................             (12,271)               2,455               (2,641)

Interest income .....................................................                 317                  369                  348
Interest expense ....................................................              (1,112)                (181)                 (66)
Equity in income (loss) of affiliate ................................                  39                  (74)                 (58)
                                                                                ---------            ---------            ---------

Income (loss) before provision (benefit) for
   income taxes .....................................................             (13,027)               2,569               (2,417)
Provision (benefit) for income taxes ................................              (2,936)                 783                 (500)
                                                                                ---------            ---------            ---------

Net income (loss) ...................................................           $ (10,091)           $   1,786            $  (1,917)
                                                                                ---------            ---------            ---------

Income (loss) per share .............................................           $   (1.19)           $    0.22            $   (0.24)
                                                                                ---------            ---------            ---------

Shares used in computing income (loss) per share ....................               8,485                8,961                7,919
                                                                                =========            =========            =========
</TABLE>

  See accompanying notes.




                                       19
<PAGE>

<TABLE>
<CAPTION>


CONSOLIDATED BALANCE SHEETS
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                 December 31,
                                                                                                       ----------------------------
 (In thousands, except share amounts)                                                                      1996              1995
 -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                                        <C>                <C>
 ASSETS
 Current Assets:
 Cash and cash equivalents ..................................................................           $  5,331           $  9,451
 Marketable securities ......................................................................               --                  501
 Accounts receivable, net of allowance for doubtful accounts of $951
     and $1,052 at December 31, 1996 and 1995, respectively .................................             32,860             34,925
 Costs and estimated earnings in excess of billings on
      uncompleted contracts .................................................................                904               --
 Prepaid expenses and other current assets ..................................................              4,425              3,066
 Assets held for sale .......................................................................              9,382               --
                                                                                                          -------            -------


     Total Current Assets ...................................................................             52,902             47,943

 Net property and equipment, at cost ........................................................             14,722             16,690

 Other assets ...............................................................................              4,800              3,579
 Deferred tax assets ........................................................................              4,818              1,677
 Goodwill, net of amortization ..............................................................             12,716              7,609
 Other intangible assets, net of amortization ...............................................                954              1,138
                                                                                                        --------           --------

     Total Assets ...........................................................................           $ 90,912           $ 78,636
                                                                                                        ========           ========

 LIABILITIES AND SHAREHOLDERS' EQUITY
 Current Liabilities:
 Accounts payable ...........................................................................           $  5,483           $  4,174
 Accrued payroll and related benefits .......................................................              6,020              4,975
 Other accrued liabilities ..................................................................              4,454              2,109
 Billings in excess of costs and estimated earnings
      on uncompleted contracts ..............................................................                 94               --
 Long-term obligations due within one year ..................................................              2,250                372
                                                                                                        --------           --------

     Total Current Liabilities ..............................................................             18,301             11,630

 Long-term debt .............................................................................             14,667                431
 Other noncurrent obligations ...............................................................              2,132              1,269

 Commitments and contingencies ..............................................................               --                 --

 Shareholders' Equity:
 Preferred stock, no par value, 5,000,000 shares authorized;
     no shares issued or outstanding ........................................................               --                 --
 Common stock, no par value, 15,000,000 shares authorized;
     8,512,688 and 8,329,343 shares issued and outstanding at
     December 31, 1996 and 1995, respectively ...............................................             42,001             41,401
 Retained earnings ..........................................................................             13,811             23,918
 Unrealized losses on marketable securities .................................................               --                  (13)
                                                                                                        --------           --------

     Total Shareholders' Equity .............................................................             55,812             65,306
                                                                                                        --------           --------

     Total Liabilities and Shareholders' Equity .............................................           $ 90,912           $ 78,636
                                                                                                        ========           ========

</TABLE>


                                       20
<PAGE>

<TABLE>
<CAPTION>

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY

 ----------------------------------------------------------------------------------------------------------------------------------
                                                                                                          Unrealized
                                                                                                          Gain (Loss)
                                                                                                             on           Total
                                                                         Common Stock          Retained    Marketable  Shareholders'
 (In thousands)                                                        Shares      Amount      Earnings    Securities      Equity
 ----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                     <C>           <C>         <C>          <C>            <C>
Balance at December 31, 1993 .................................        7,279      $ 34,948      $ 24,049                    $ 58,997
Issuance of common  stock upon exercise of
  options, net of redemptions ................................           55           243          --                           243
Income tax benefits of employee stock option
  exercises ..................................................         --             103          --                           103
Issuance of common  stock under purchase of
  Wehran Envirotech, Inc. ....................................          915         6,029          --                         6,029
Issuance of common  stock under the Employee
  Stock Purchase Plan ........................................           69           439          --                           439
Issuance of restricted stock, net of cancellation ............            1             8          --                             8
Repurchase of common stock ...................................         (133)         (812)         --                          (812)
Unrealized losses on marketable securities ...................         --            --            --            (31)           (31)
Net loss .....................................................         --            --          (1,917)                     (1,917)
                                                                   -----------------------------------------------------------------

Balance at December 31, 1994 .................................        8,186        40,958        22,132          (31)        63,059
Issuance of common  stock upon exercise of
  options, net of redemptions ................................           30            35          --                            35
Income tax benefits of employee stock option
  exercises ..................................................         --              50          --                            50
Issuance of common  stock under the Employee
  Stock Purchase Plan ........................................          114           369          --                           369
Issuance of restricted stock, net of cancellation ............           (1)          (11)         --                           (11)
Net change in unrealized losses on marketable
  securities .................................................         --            --            --             18             18
Net income ...................................................         --            --           1,786                       1,786
                                                                   ----------------------------------------------------------------

Balance at December 31, 1995 .................................        8,329        41,401        23,918           (13)       65,306
Issuance of common  stock upon exercise of
  options, net of redemptions ................................            5            15          --                            15
Issuance of common  stock under the Employee
  Stock Purchase Plan ........................................           88           258          --                           258
Issuance of restricted stock, net of cancellation ............           91           327          --                           327
Net change in unrealized losses on marketable
  securities .................................................         --            --            --              13            13
Dividends paid ...............................................         --            --             (16)                        (16)
Net loss .....................................................         --            --         (10,091)                    (10,091)
                                                                   ----------------------------------------------------------------

Balance at December 31, 1996 .................................        8,513      $ 42,001      $ 13,811      $      0      $ 55,812
                                                                   ----------------------------------------------------------------
</TABLE>

See accompanying notes.



                                       21
<PAGE>

<TABLE>
<CAPTION>

EMCON
CONSOLIDATED STATEMENTS OF CASH FLOWS

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

                                                                                                      Years Ended December 31,

 Increase (decrease) in cash and cash equivalents (in thousands)                                1996          1995           1994
 -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                             <C>           <C>             <C>
Cash flow from operating activities:
Net income (loss) .....................................................................      $(10,091)      $  1,786       $ (1,917)
Adjustments to reconcile net income (loss) to net cash provided
   by operating activities:
   Depreciation .......................................................................         7,330          4,487          3,710
   Amortization .......................................................................         1,034            613            654
   Loss on sale/disposal of property and equipment ....................................           474            129            416
   Write-down of gas production rights ................................................           247            --             655
   Impairment of goodwill .............................................................         6,194            --             --
   Increase in salary continuation plan ...............................................           133             62             93
   Changes in operating assets and liabilities:
       Accounts receivable ............................................................         1,226          3,398         (1,290)
       Prepaid expenses and other current assets ......................................        (1,527)           187          1,056
       Other assets ...................................................................        (2,275)          (786)           642
       Deferred tax assets ............................................................        (2,995)           382         (1,469)
       Accounts payable ...............................................................          (351)        (4,672)         2,300
       Accrued payroll and related benefits ...........................................           661           (605)         1,173
       Other accrued liabilities ......................................................         1,523            251         (1,148)
- -----------------------------------------------------------------------------------------------------------------------------------
          Net cash provided by operating activities ...................................         1,583          5,232          4,875
- -----------------------------------------------------------------------------------------------------------------------------------
Cash flow from investing activities:
   Additions to property and equipment ................................................        (2,484)        (4,082)        (7,050)
   Purchase of available for sale securities ..........................................          --             --           (5,967)
   Maturities of available for sale securities ........................................           514          1,953          8,800
   Cash portion of assets held for sale ...............................................          (593)          --             --
   Acquisitions, net of cash acquired .................................................       (13,827)          --              258
   Proceeds from sale of property and equipment .......................................           508            327            442
- -----------------------------------------------------------------------------------------------------------------------------------
          Net cash used for investing activities ......................................       (15,882)        (1,802)        (3,517)
- -----------------------------------------------------------------------------------------------------------------------------------
Cash flow from financing activities:
   Proceeds of new debt obligation ....................................................        17,526            476         (6,662)
   Payments of current and noncurrent obligations .....................................        (7,931)          --             --
   Issuance of common stock for cash ..................................................           600            393            690
   Repurchase of common stock .........................................................          --             --             (812)
   Dividend payments ..................................................................           (16)          --             --
- -----------------------------------------------------------------------------------------------------------------------------------
          Net cash provided by (used for) financing activities ........................        10,179            869         (6,784)
- -----------------------------------------------------------------------------------------------------------------------------------
Increase (decrease) in cash and cash equivalents ......................................        (4,120)         4,299         (5,426)
Cash and cash equivalents, beginning of year ..........................................         9,451          5,152         10,578
- -----------------------------------------------------------------------------------------------------------------------------------
Cash and cash equivalents, end of year ................................................      $  5,331       $  9,451       $  5,152
- -----------------------------------------------------------------------------------------------------------------------------------
See accompanying notes.
</TABLE>



                                       22
<PAGE>

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation:

The accompanying  consolidated  financial statements include the accounts of the
Company and its wholly owned  subsidiaries  after elimination of all significant
intercompany  accounts and  transactions.  Certain  amounts in the 1995 and 1994
financial statements have been reclassified to conform to the 1996 presentation.

In 1994,  the Company  converted  to a  fifty-two/fifty-three  week fiscal year,
resulting in a fifty-three  week year in 1996 and a fifty-two week year in 1995.
The  Company's  year end  falls  on the  Friday  closest  to the last day of the
calendar  quarter.  The Company also  follows a  five-four-four  week  quarterly
cycle.  While the actual  period  ends for the  fiscal  years 1996 and 1995 were
January 3, 1997 and December 29, 1995, respectively,  for convenience,  the date
shown on accompanying  financial  statements is December 31, the last day of the
calendar periods.

Use of Estimates in the Preparation of Financial Statements:

The preparation of financial  statements,  in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the reported amounts of revenue and expenses during the reporting period. Actual
results could differ from those estimates.

Revenue Recognition and Expenses:

Revenue  from  engineering  service  contracts  is  recognized  as services  are
provided and revenue from construction projects is recognized on a percentage of
completion basis. The Company routinely subcontracts for outside services,  such
as drilling  and  specialized  laboratory  services.  These costs are  generally
passed through to the Company's customers. The Company believes net revenue is a
more accurate  measure of the value of its services than gross  revenue.  Direct
costs include  compensation  for billable hours for  professional  and technical
staff and other project expenses  reimbursed by clients.  Indirect costs include
compensation  for  non-billable  professional  and  technical  staff hours,  all
employee fringe benefits,  marketing,  and general and  administrative  expenses
such as rent, insurance and depreciation.

Cash and Cash Equivalents and Marketable Securities:

The Company considers all investment  instruments and marketable securities with
an original  maturity date of 90 days or less at the date of purchase to be cash
equivalents.  Management  determines  the  appropriate  classifications  of debt
securities at the time of purchase and reevaluates  such  designation as of each
balance  sheet  date.  Investments  consisting  primarily  of  high  grade  U.S.
government  and  corporate   marketable   debt   securities  are  classified  as
available-for-sale,  and are  carried  at fair  value,  based on  quoted  market
prices, with the unrealized gains and losses, net of tax, reported in a separate
component of shareholders'  equity.  The cost of debt securities is adjusted for
amortization  of premiums and  accretion  of  discounts  to  maturity,  which is


                                       23
<PAGE>

included in interest  income.  Realized  gains and losses and  declines in value
judged to be other-than-temporary,  as well as any interest on these securities,
are included in interest  income.  The cost of  securities  sold is based on the
specific  identification method. There were no available-for-sale  securities as
of December 31, 1996.

The following is a summary of  available-for-sale  securities as of December 31,
1995:
- -------------------------------------------------------------------------------
                                          Gross         Gross
                                        Unrealized    Unrealized     Estimated
(In thousands)                  Cost      Gains         Loss       Fair Value
- --------------------------------------------------------------------------------
U.S. Treasury Bills/Notes     $514,000     $ -         $13,000        $501,000
- -------------------------------------------------------------------------------

All  marketable  securities  held by the  Company as of  December  31, 1995 were
available for the Company's current working capital  requirements and matured in
less than one year.  Accordingly,  all such amounts were  classified  as current
assets in the accompanying consolidated balance sheets.

Supplemental Cash Flow Information:

Cash paid for income taxes was approximately $659,000,  $58,000 and $469,000 for
the years ended December 31, 1996,  1995 and 1994,  respectively.  Cash paid for
interest was  approximately  $951,000,  $181,000 and $66,000 for the years ended
December 31, 1996, 1995 and 1994, respectively.

In 1995,  the Company sold certain land and buildings in exchange for $1,100,000
in marketable trade credits which will be used to reduce cash payments of future
recurring  corporate  expenses.  No significant gain or loss was incurred on the
transaction. The trade credits expire in eight years, and the Company expects to
utilize such credits prior to  expiration.  The Company has  agreements  for the
utilization  of $625,000 of the trade  credits.  $225,000  and $400,000 of these
credits are  included on the  December 31, 1996  consolidated  balance  sheet in
other current  assets and other assets,  respectively.  To-date,  $55,000 of the
trade credits have been applied to payments.  The remaining  balance of $420,000
is included on the December 31, 1996 consolidated balance sheet in other assets.

Property and Equipment:

Property and equipment, net of assets held for sale, consists of (in thousands):
- -------------------------------------------------------------------------------
Years Ended December 31,                                 1996          1995
- -------------------------------------------------------------------------------
Land and buildings                                      $  2,808     $  2,723
Machinery and equipment                                   18,886       23,723
Furniture and fixtures                                     4,130        5,915
Vehicles                                                   2,871        3,638
Leasehold improvements                                     1,328        2,324
- -------------------------------------------------------------------------------
     Total                                                30,023       38,323
Less accumulated depreciation and amortization            15,301       21,633
- --------------------------------------------------------------------------------
Net property and equipment                               $14,722      $16,690
- -------------------------------------------------------------------------------
Property and equipment are stated at cost.  Depreciation  and  amortization  are
provided  on the  straight-line  basis over the lesser of the  estimated  useful
lives of the  assets or the term of the lease  (lives  range  from 3-31  years).
Amortization of property and equipment acquired under capital leases is included
with  depreciation  expense.

Approximately  $7,058,000  of fixed assets net of  accumulated  depreciation  of
$6,236,000 were sold or disposed of in 1996.

                                       24
<PAGE>

Income (Loss) per Share:

Primary and fully diluted  earnings per share are  substantially  the same. Loss
per share in 1996 and 1994 were based on the weighted  average  number of common
shares  outstanding.  Income per share in 1995 was based on the weighted average
number of common and dilutive common  equivalent  shares  outstanding  using the
modified treasury stock method. Common equivalent shares are comprised of shares
issuable under the Company's stock option plans.

Business Segment and Concentration of Credit Risk:

The Company operates within one business segment,  which provides  comprehensive
environmental engineering, consulting,  construction,  facilities operations and
maintenance,  and laboratory  services to industrial,  private and  governmental
concerns,  predominantly  in  the  waste  disposal,  petroleum,  wood  products,
chemical and manufacturing industries;  as well as to utilities,  non-regulatory
government entities,  financial  institutions and real estate developers.  There
are no  significant  operations  or revenues  generated  from non United  States
locations.  Ongoing credit evaluations of its customers' financial condition are
performed by the Company, generally requiring no collateral.

2. CONTRACTS IN PROGRESS

Information related to contracts in progress (in thousands):
- --------------------------------------------------------------------------------
Years Ended December 31,                                1996             1995
- --------------------------------------------------------------------------------
Costs incurred on uncompleted contracts                $4,181        $      --
Estimated earnings on uncompleted contracts               940               --
                                                      -------
                                                        5,121
Less billings to date on uncompleted contracts          4,311               --
- -------------------------------------------------------------------------------
       Total                                          $   810         $     --
- --------------------------------------------------------------------------------

Included  in the  accompanying  consolidated  balance  sheets  on an  individual
contract basis are (in thousands):
- --------------------------------------------------------------------------------
Years Ended December 31,                                1996             1995
- --------------------------------------------------------------------------------
Costs and estimated earnings in excess of billings
    on uncompleted contracts.                         $   904        $      --
Billings in excess of costs and estimated earnings
    on uncompleted contracts                              (94)              --
- --------------------------------------------------------------------------------
        Total                                         $   810        $      --
- --------------------------------------------------------------------------------

3. RESTRUCTURING/OTHER CHARGES

In the  fourth  quarter  of  1996,  senior  management  reviewed  the  Company's
operational and  administrative  functions for the purpose of further  improving
the Company's  competitiveness and overall profitability.  Based on this review,
the  Company's  Board of Directors  approved a strategic  restructuring  plan in
December,  1996 to reposition the Company to fully exploit its core strengths in
engineering,  design,  construction,  operations and maintenance. As a result of
these actions, the Company recognized pre-tax restructuring and other charges of
$1,237,000 and $6,960,000,  respectively.  Included in the restructuring  charge
were $604,000  related to the closure or  downsizing of several  underperforming
offices,  $628,000 related to employee severance and the write-off of employment
contracts for former employees no longer actively participating in the Company's
affairs,  and a $5,000 adjustment to the 1994  restructuring  plan.  Included in


                                       25
<PAGE>

other charges were $4,768,000 related to the write-down in the carrying value of
goodwill associated with the Company's  continuing operating units in accordance
with the Statement of Financial  Accounting  Standards No. 121,  "Accounting for
the  Impairment of Long-Lived  Assets and for  Long-Lived  Assets to Be Disposed
Of", $1,529,000 related to the write-off of idle or disposed of assets, $368,000
related to the write-down of the Company's  landfill gas  production  rights and
related  fixed assets, and $156,000  related to the buyout and  cancellation  of
outstanding  stock  options  to  purchase  approximately  743,000  shares of the
Company's common stock held by employees of the Company. Also, included in other
charges were $139,000 for various  other  operational  costs.  Fair value of the
goodwill associated with the Company's  continuing  operating units was based on
each operating unit's expected future discounted cash flows.

As of December 31, 1996, $119,000 of the 1996 restructuring  adjustment has been
incurred and  $1,113,000  remains in other  accrued  liabilities.  All remaining
actions are expected to be substantially completed by the third quarter of 1997.

In October 1994, the Board of Directors  appointed  Eugene M. Herson to serve as
the Company's new President and Chief Executive Officer. Shortly thereafter,  in
December,  1994, the Company's Board of Directors  approved senior  management's
recommendation to implement a restructuring plan designed to improve operational
efficiencies.  Under the plan, the Company  eliminated  substantially all of its
regional  consulting  subsidiaries  in  favor  of  a  divisional  structure.  In
addition,  the Company  consolidated  and  streamlined  all  unnecessary  and/or
redundant  administrative  functions.  As a result  of the  actions  taken,  the
Company recognized a pre-tax  restructuring charge in the fourth quarter of 1994
of $1,181,000.  Of this amount,  $611,000 related to the write-off of employment
contracts for former employees no longer actively participating in the Company's
affairs,  $287,000 related to employee severance,  and $263,000 related to costs
associated with excess  facilities and equipment.  Anticipated  savings from the
1994  restructuring  plan were estimated to exceed $1,000,000 per year. To date,
$1,142,000 of  restructuring  costs have been incurred and adjustments of $5,000
and  ($17,000)  were made to  increase/(reduce)  the  reserve  in 1996 and 1995,
respectively,  to the required remaining balances. At December 31, 1996, $27,000
of accrued  restructuring  costs for write-off of  employment  contracts in 1994
were included in accrued  liabilities in the accompanying  consolidated  balance
sheet.  All remaining  actions are expected to be completed by the first quarter
of 1997.

During the fourth  quarter  of 1994,  the  Company  also  incurred  nonrecurring
charges of $777,000  related to the  write-down of the carrying value of certain
of the Company's  landfill gas  production  rights and of certain  related fixed
assets due to the  reevaluation  of future cash flows  expected to be  generated
from the related projects.

4. IMPAIRMENT OF ASSETS HELD FOR SALE

In December 1996, the Company executed a Letter of Intent to sell its laboratory
division,  Columbia Analytical  Services,  Inc. ("CAS"), to the employees of CAS
for  cash,  notes  and  other  consideration  valued  in total at  approximately
$7,500,000.  The  transaction  is expected to be completed  the first quarter of
1997. In accordance  with Statement of Financial  Accounting  Standards No. 121,
"Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to
Be Disposed Of", the Company  recognized an impairment in its  investment in CAS
of  $3,327,000;  including  a  write-down  in the  carrying  value  of  goodwill
associated with previous  laboratory  acquisitions  of $1,426,000.  For the year
ended December 31, 1996, CAS had a loss before taxes of $142,000.  The estimated
fair value of CAS is reflected in the accompanying  consolidated  balance sheets
as assets held for sale as of December 31, 1996.

                                       26
<PAGE>

5. ACQUISITIONS

Goodwill

On February  29,  1996,  EMCON  acquired all the  outstanding  capital  stock of
Organic  Waste  Technologies,  Inc.  ("OWT"),  a Cleveland  based  construction,
equipment and operations and maintenance  company with significant  expertise in
solid waste  management.  The Company purchased OWT for $13,859,000 in cash plus
the issuance of convertible  notes and other  contractual  indebtedness  held by
certain  senior  OWT  management  in the  principal  amount of  $1,747,000.  The
transaction was accounted for as a purchase.  The indebtedness bears interest at
the rate of 8% per annum with all  principal due and payable in full on March 1,
2001. The  indebtedness may be converted into shares of OWT common stock upon an
underwritten  public  offering of OWT's  common  stock in an amount in excess of
$10,000,000.  In the  event the  indebtedness  has not been  converted  into OWT
shares,  it may instead be  converted  into shares of EMCON  common  stock for a
period of ninety days after November 30, 2001 at a conversion price of $6.50 per
share. Goodwill of approximately  $11,129,000 resulting from this acquisition is
being  amortized  over thirty  years using the  straight  line  method.  Related
accumulated amortization at December 31, 1996, was approximately $310,000.

The following summarizes the unaudited pro forma net revenue, net income (loss),
and income  (loss) per share of the combined  company for the  unaudited  twelve
months  ended  December  31, 1996  compared to  unaudited  twelve  months  ended
December 31, 1995 (in thousands):

- -------------------------------------------------------------------------------
                                                  Pro Forma       Pro Forma 
                                                     1996            1995  
Twelve  months  ended  December  31,             (unaudited)     (unaudited)
- -------------------------------------------------------------------------------
Net revenue                                      $120,738          $120,928
Net income (loss)                                 (10,407)            1,606 
Income (loss) per share                            ($1.23)         $   0.20
- -------------------------------------------------------------------------------
The above pro forma  results of operations do not purport to reflect the actual
results of operations had the Company actually  acquired OWT as of the beginning
of 1996.

Effective April 1, 1994, the Company acquired all of the capital stock of Wehran
Envirotech,  Inc. ("Wehran"),  an environmental consulting company headquartered
in Middletown,  New York, in exchange for 410,000 shares of the Company's common
stock  valued at  $2,818,000  and  $439,000  in direct  acquisition  costs.  The
transaction was accounted for as a purchase. An additional 80,000 shares, valued
at $290,000, were issued to Wehran shareholders in December, 1994 as a result of
their attaining certain  predetermined  operating performance goals. Goodwill of
approximately $1,896,000 resulting from this acquisition is being amortized over
twenty years using the  straight  line method.  Accumulated  amortization  as of
December 31, 1996,  was  approximately  $253,000.  Subsequent to the purchase of
Wehran,  the Company issued an additional  425,000 shares of its common stock to
retire approximately  $5,000,000 of Wehran's convertible  subordinated notes. In
addition,  the Company  also paid  approximately  $6,100,000  in cash to satisfy
amounts  borrowed  against  Wehran's  revolving  credit  line  ($5,000,000)  and
obligations due to settlement of certain litigation ($1,100,000).

On May 31, 1996,  EMCON acquired the operations of Cascade Pacific  Engineering,
Inc.  ("Cascade").  The transaction was structured as an asset  acquisition with
EMCON  acquiring  substantially  all the assets of Cascade for  $546,000 in cash
plus the assumption of substantially all of Cascade's liabilities.  The tangible
net assets  were valued at $80,000.  The  $466,000  excess of cost over the fair


                                       27
<PAGE>

value of net assets  acquired,  net of accumulated  amortization at December 31,
1996, of $93,000 was subsequently written-off in 1996 due to an evaluation based
on a discounted cash flow analysis.

Acquisitions  made in the  Southeast  and  Alaska  between  1990 and  1993  were
evaluated  based on a discounted cash flow basis and resulted in a write-down of
goodwill of  $4,394,000.  Remaining  goodwill and  accumulated  amortization  at
December 31, 1996 were approximately $1,734,000 and $1,480,000, respectively.

Other Intangible Assets:

Intangible assets include $879,000 and $2,476,000 at December 31, 1996 and 1995,
respectively,   representing   gross  costs  incurred  to  obtain  landfill  gas
production rights.  Amortization of these gas production rights is recognized as
the greater of either the  straight-line  or  units-of-production  method over a
term not  exceeding  the  period  of the gas  production  leases.  The  expected
amortization  periods  range  from one to ten  years.  The  related  accumulated
amortization was approximately  $798,000 and $1,338,000 at December 31, 1996 and
1995,  respectively.  In December,  1996 the Company  reduced the value of these
landfill gas production rights by $247,000 to their estimated fair value.

Other intangible assets at December 31, 1996 also include $888,000, representing
the gross cost to reacquire  certain patent rights associated with the Company's
proprietary leachate evaporation system technology.  Accumulated amortization at
December 31, 1996 was  approximately  $15,000 and the patent is being  amortized
over the 15 year life of such patents.

6. OTHER NONCURRENT OBLIGATIONS

Certain employees  participate in a salary  continuation plan which will provide
the employees with a 10-year  benefit from the Company.  Monthly  benefits range
from $600 to $4,500, and the employees vest in varying amounts from the fifth to
the tenth  anniversary  date of their  contracts.  Such  amounts will be paid in
addition to those payments due specifically as  consideration  for the employees
meeting the non-competition provisions of their contracts.

Included in other  noncurrent  obligations are the Company's  liabilities  under
salary  continuation  agreements and capital  leases.  Liabilities  under salary
continuation  agreements  were  $939,000  and  $802,000 at December 31, 1996 and
1995,  respectively.  Capital lease obligations are  collateralized by equipment
included in property and equipment with a cost and  accumulated  depreciation of
$324,000 and $80,000,  respectively,  at December 31, 1996,  and  $1,020,000 and
$863,000, respectively, at December 31, 1995.

7. RETIREMENT PLAN

The Company  sponsors a qualified  retirement plan,  generally  available to all
employees,  which is based on Section 401(k) of the Internal Revenue.  Employees
may elect to contribute up to 15% of their annual compensation to the plan up to
the Internal  Revenue  Service  annual  contribution  limit $9,500 for 1996. The
Company  voluntarily  matched the employee's  contribution to a maximum of 3% of
annual  compensation.  The Company's  contributions  to the retirement plan were
$1,146,000,  $1,177,000 and $674,000 for the years ended December 31, 1996, 1995
and 1994, respectively.



                                       28
<PAGE>

8. COMMITMENTS

The  Company  leases  its  office  facilities,  as well as office  and  computer
equipment,  under operating  leases in various  locations.  Until 1995,  certain
office  facilities were leased from  partnerships in which certain  officers and
shareholders of the Company had controlling  interests.  Lease arrangements with
the  partnerships  were  terminated in 1995.  The annual rents under leases from
partnerships  were  approximately  $473,000  and  $516,000  for 1995  and  1994,
respectively. The Company's minimum annual lease commitments under all operating
leases are approximately (in thousands):
- -------------------------------------------------------------------------------
Years Ending December 31,
- --------------------------------------------------------------------------------
1997                                                              $5,385
1998                                                               4,044
1999                                                               3,313
2000                                                               2,155
2001 and thereafter                                                2,657
- --------------------------------------------------------------------------------

Rent expense was  approximately  $5,263,000,  $4,429,000  and $3,964,000 for the
years ended December 31, 1996, 1995 and 1994, respectively.

Certain employees have signed non-competition agreements which will provide them
with  monthly  payments  from  $400 to $3,000  for a period of up to ten  years,
commencing on the tenth anniversary date of the agreements. (See note 6.)

9. LITIGATION

As a firm  engaged in  environmental-related  matters,  the  Company  encounters
potential liability,  including claims for significant  environmental damage, in
the normal course of business.  The Company is party to lawsuits and is aware of
potential  exposure related to certain claims. In the fourth quarter of 1996 the
Company agreed to settlement terms on a number of outstanding legal matters.  At
the same time the Company assessed the potential  exposure relative to all other
known pending matters.  Based on the foregoing,  the Company increased its legal
reserve by an additional $1,553,000. In the opinion of management the resolution
of all known  lawsuits/claims at amounts in excess of established  reserves will
not have a material adverse affect on the Company's financial position,  results
of operations or cash flows.



                                       29
<PAGE>

10. LONG-TERM DEBT
<TABLE>
<CAPTION>

Long-term debt consists of the following (in thousands):
- ------------------------------------------------------------------------------------------------------------------------------------
Years Ended December 31,                                                                                       1996            1995
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                                          <C>               <C>
Variable-rate note payable to bank .................................................................         $ 9,286            --
     (effective rate at 12/31/96 was 7.35%).  Payable in quarterly
     installments of $357 with a final payment of $3,214 in 2001.
     Collateralized by the assets of EMCON.
8% unsecured notes payable to OWT shareholders.  Payable on.........................................           1,747            --
     termination date in 20001
7.99% note payable to bank in monthly installments through 2006.....................................           4,661            --
     Collateralized by the assets of OWT with a net book value of $6,186
8.49% note payable to bank in monthly installments through 2001.....................................             374            --
     Collateralized by equipment of OWT with a net book value of $458
8.99% note payable to bank in monthly installments through 2000.....................................             296            --
     Collateralized  by the assets of OWT with a net book value of $6,186 
Other indebtedness, interest rates vary from 5.3% to 15.9% payable..................................             553             803
     in installments through 2000.  (Primarily lease obligations)
                                                                                                             -------         -------
Total Long-term Debt ...............................................................................         $16,917         $   803
                                                                                                             -------         -------
Less current portion ...............................................................................         $ 2,250         $   372
- ------------------------------------------------------------------------------------------------------------------------------------
Long-term Debt, net of current portion .............................................................         $14,667         $   431
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

Interest paid on all  outstanding  debt amounted to $951,000 in 1996 and $58,000
in 1995. Carrying value of the debt approximates fair value.

Aggregate principal payments for the next five years for years ending December
31,
- -------------------------------------------------------------------------------
1997                                                           $ 2,250
1998                                                             2,172
1999                                                             2,039
2000                                                             2,030
2001 and thereafter                                              8,426
- -------------------------------------------------------------------------------

In  conjunction  with  the  acquisition  of  OWT,  the  Company  entered  into a
$20,000,000   secured  Credit  Agreement  with  its  existing  commercial  bank,
replacing  its  previous  $10,000,000  unsecured  line of credit.  Under the new
agreement,  the Company borrowed  $10,000,000 on a term loan basis with interest
at a managed  rate not to exceed the prime rate.  Principal  is to be  amortized
over seven years, but with any unpaid amount finally due and payable on June 30,
2001.  The  remaining  $10,000,000  under the Credit  Agreement is available for
working  capital  purposes  (with up to  $5,000,000  also  being  available  for
non-working  capital  purposes).  The line of  credit  component  of the  Credit
Agreement  expires on May 31,  1997.  The  Company  expects to renew the line of
credit  component of the Credit Agreement  following its expiration.  The Credit


                                       30
<PAGE>

Agreement  contains  provisions with respect to the payment of dividends and the
level of capital expenditures and requires the maintenance of specific levels of
working capital, tangible net worth and continued quarterly profitability.  As a
result  of  the  fourth  quarter  loss  in  1996,  the  impact  of  the  related
restructuring  actions  and the  payment of certain  profit  distributions  to a
minority  shareholder  in one of  OWT's  subsidiaries,  the  Company  was not in
compliance with these  covenants at year-end.  However,  the Company  obtained a
waiver from the bank for its non compliance and agreed to related  amendments of
the Credit Agreement  reducing the tangible net worth requirement and permitting
distributions to the minority shareholders in OWT's subsidiary.

11. SHAREHOLDERS' EQUITY

Preferred Stock:

The Board of Directors of the Company has the authority to determine the rights,
preferences, privileges and restrictions of the authorized preferred stock.

Stock Option Plan:

The Company has issued  options to purchase  shares of common stock  pursuant to
its 1986  Incentive  Stock  Option Plan (now  expired) and its 1988 Stock Option
Plan (the "Plans").  These options are granted with option exercise prices which
are equal to 100%,  105% or 110% of fair market value on the date of grant,  and
expire over terms ranging from five to ten years. Options generally vest ratably
over a two year or four year period. A summary of activity of the Plans follows:
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------
                                                                            Options Outstanding
                                                           --------------------------------------------------
                                       Available        Number            Price              Aggregate
                                       for Grant       of Shares        Per Share              Value
- --------------------------------------------------------------------------------------------------------------
<S>                                      <C>             <C>                 <C>               <C>
Balance at
   December 31, 1993 ........          383,482         1,985,745      $ 1.15 - $11.25      $ 16,034,340
Options authorized ..........          750,000              --              --                   --
Options granted .............         (448,900)          448,900      $ 5.00 - $ 8.37         2,984,999
Options canceled ............          153,702          (153,702)     $ 3.33 - $11.25        (1,322,592)
Options exercised ...........             --             (54,606)     $ 1.15 - $ 7.67          (250,724)
- -------------------------------------------------------------------------------------------------------------
Balance at
   December 31, 1994 ........          838,284         2,226,337      $ 1.15 - $11.25        17,446,023
Options granted .............         (386,650)          386,650      $ 3.50 - $ 4.88         1,545,537
Options canceled ............           72,629           (72,629)     $ 3.33 - $10.00          (591,701)
Options exercised ...........             --             (30,000)     $ 1.15                    (34,666)
- -------------------------------------------------------------------------------------------------------------
Balance at
   December 31, 1995 ........          524,263         2,510,358      $ 3.33 - $11.25        18,365,193
Options granted .............         (192,448)          192,448      $ 3.25 - $ 4.88           728,144
Options canceled ............        1,518,674        (1,518,674)     $ 3.33 - $11.25       (12,357,381)
Options exercised ...........             --              (4,700)     $ 3.33 - $ 3.50           (15,698)
- -------------------------------------------------------------------------------------------------------------
Balance at
   December 31, 1996 ........        1,850,489         1,179,432      $ 3.25 - $11.25      $  6,720,258
- -------------------------------------------------------------------------------------------------------------
</TABLE>

                                       31
<PAGE>

Restricted Stock Plan:

The Company's  Restricted  Stock Plan was approved by its  shareholders  in May,
1991. A total of 225,000 shares of the Company's  Common Stock were reserved for
issuance under the Restricted Stock Plan.  Shares granted to employees under the
Restricted Stock Plan generally vest in equal annual  installments  over periods
ranging  from three to four years.  At December  31,  1996,  99,191  shares were
available for issuance.

Employee Stock Purchase Plan:

The  Employee  Stock  Purchase  Plan  (ESPP)  provides  that  substantially  all
employees may purchase the Company's common stock at a price equal to 85% of its
fair value on certain  specified dates via a payroll deduction plan. At December
31, 1996, 248,338 shares were available for issuance.  The Company  discontinued
the ESPP effective February 1, 1997.

Stock-Based Compensation:

As  permitted  under  FASB  Statement  No.  123,   "Accounting  for  Stock-Based
Compensation"   (FASB  123),  the  Company  has  elected  to  follow  Accounting
Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees" (APB
25) in accounting for stock-based awards to employees. Under APB 25, the Company
generally recognizes no compensation expense with respect to such awards.

Pro Forma information  regarding net income (loss) and earnings (loss) per share
is required by FASB 123 for awards  granted  after  December 31, 1994, as if the
Company had accounted  for its  stock-based  awards to employees  under the fair
value method of FASB 123. For these  purposes,  the fair value of the  Company's
stock-based  awards to employees  was  estimated  using a  Black-Scholes  option
valuation model. The Black-Scholes  option valuation model was developed for use
in  estimating   the  fair  value  of  traded  options  which  have  no  vesting
restrictions and are fully  transferable.  In addition,  the Black-Scholes model
requires the input of highly subjective assumptions including the expected stock
price  volatility.  Because the Company's  stock-based  awards to employees have
characteristics  significantly  different  from  those of  traded  options,  and
because changes in the subjective  input  assumptions can materially  affect the
fair  value  estimate,  in  management's  opinion,  the  existing  models do not
necessarily  provide  a  reliable  single  measure  of  the  fair  value  of its
stock-based  awards to employees.  The fair value of the  Company's  stock-based
awards to  employees  was  estimated  assuming  no  expected  dividends  and the
following weighted-average assumptions.

- -------------------------------------------------------------------------------
                               Options                     ESPP
                              -------                     ----
                          1996        1995           1996        1995
- -------------------------------------------------------------------------------
Expected life (years)      6.6         7.0           0.5          0.5
Expected volatility        .49         .49           .32          .42
Risk-free interest rate    6.1%        6.3%          5.5%         6.1%
- -------------------------------------------------------------------------------



                                       32
<PAGE>

For pro forma  purposes,  the estimated fair value of the Company's  stock-based
awards to employees is amortized over the options'  vesting period (for options)
and the six-month  purchase  period (for stock  purchases  under the ESPP).  The
Company's pro forma information follows:
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------
In thousands except for earnings (loss) per share information                        1996               1995
- ----------------------------------------------------------------------------------------------------------------
<S>                                                                               <C>              <C>
Net income (loss)
     As reported ............................................................... $  (10,091)         $   1,786
     Pro forma ................................................................. $  (10,393)         $   1,688
Primary (loss) earnings per share
     As reported ............................................................... $    (1.19)         $    0.22
     Pro forma ................................................................. $    (1.27)         $    0.20
- ---------------------------------------------------------------------------------------------------------------
</TABLE>

Because FASB 123 is applicable only to awards granted subsequent to December 31,
1994, its pro forma effect will not be fully reflected until approximately 1999.

The  weighted  average  fair value of options  granted  during 1996 and 1995 was
$2.14 and $2.30 per share, respectively.

The following  summarizes  information about fixed stock options  outstanding at
December 31, 1996:
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------
                                  Options Outstanding                             Options Exercisable
                                                              Weighted                          Weighted
                             Number       Weighted Average    Average                           Average
   Range of Exercise     Outstanding at      Remaining        Exercise        Number            Exercise
        Prices              12/31/96      Contractual Life    Price           Exercisable        Price
- -------------------------------------------------------------------------------------------------------------
       <C>                  <C>                <C>              <C>               <C>              <C>
    $ 9.25 - $11.25         239,125             5.6         $   9.34          238,450           $   9.34
    $ 6.50 - $ 8.83         227,694             4.0         $   7.43          198,644           $   7.50
    $ 5.00 - $ 6.00          36,015             4.2         $   5.59           28,265           $   5.69
    $ 3.25 - $ 4.88         676,598             7.9         $   3.83          208,041           $   3.80
- -------------------------------------------------------------------------------------------------------------
    $ 3.25 - $11.25       1,179,432             6.5         $   5.70          673,400           $   6.93
- ------------------------------------------------------------------------------------------------------------
</TABLE>
At December 31, 1995,  1,562,833  shares were exercisable at an average exercise
price of $8.10 per share.

In December,  1996 employees  (other than officers and  directors)  with options
having  exercise  prices of $5.00 per share or  greater  were given the right to
either sell back their options to the Company, to exchange their options for new
options,  to retain their original  options or elect a combination of the three.
The rates at which the  outstanding  options  could be exchanged or sold back to
the Company varied depending on the original option exercise price. Participants
could  exchange  their  outstanding  stock options for newly granted  options at
rates  ranging  from one new share for every three old option  shares to one new
share for every five old option shares.  Alternatively,  participants could sell
back their options at prices ranging from $0.10 to $0.40 per option share.  This
resulted in options for 743,319 shares being  canceled for a cash  settlement of
approximately  $156,000,  and an additional  203,727 shares canceled in exchange
for the grant of new options  covering  47,247  shares  with an option  exercise
price of $3.68 per share.



                                       33
<PAGE>


12. INCOME TAXES

The  provision  (benefit)  for  income  taxes  consists  of  the  following  (in
thousands):
- -------------------------------------------------------------------------------
Years Ended December 31,                   1996          1995           1994
- -------------------------------------------------------------------------------

Federal:
   Current                                 $607          $438         $(112)
   Deferred                              (3,358)           61          (378)
- -------------------------------------------------------------------------------
        Total Federal                    (2,751)          499          (490)
- -------------------------------------------------------------------------------
State:
   Current                                   73            78           200
   Deferred                                (258)          206          (210)
- -------------------------------------------------------------------------------
        Total State                        (185)          284           (10)
- -------------------------------------------------------------------------------
        Total Federal and State         $(2,936)         $783         $(500)
- -------------------------------------------------------------------------------

A  reconciliation  between the Company's  effective tax rate of (22.5%) in 1996,
30.5% in 1995 and (20.7%) in 1994 and the U.S.  statutory rate is as follows (in
thousands):
- -------------------------------------------------------------------------------
Years Ended December 31,                   1996          1995           1994
- -------------------------------------------------------------------------------
Tax at U.S. statutory rate              $(4,559)         $899          $(846)
State taxes, net of federal benefit        (280)          149             (7)
Tax exempt income                            --            --            (38)
Fuel tax credits                           (454)         (515)            --
Goodwill amortization                     2,306           150            135
Meals and entertainment                      94           105            101
Other individually immaterial items         (43)           (5)           155
- -------------------------------------------------------------------------------
        Total Federal and State         $(2,936)         $783          $(500)
- -------------------------------------------------------------------------------
As of December 31, 1996, the Company has federal  alternative minimum tax credit
carryforwards of approximately $2,327,000 which have no expiration date.



                                       34
<PAGE>

Deferred  income  taxes  reflect  the net tax effects of  temporary  differences
between the carrying  amounts of assets and liabilities for financial  reporting
purposes and the amounts used for income tax purposes. Significant components of
the Company's deferred tax assets and liabilities  consisted of the following at
(in thousands):
- -------------------------------------------------------------------------
Years Ended December 31,                              1996        1995
- -------------------------------------------------------------------------
Deferred tax assets:
     Alternative minimum tax credit carryforwards     $2,327     $1,744
     Deferred compensation                               340        306
     Allowance for doubtful accounts                     403        421
     Vacation accruals                                   636        595
     Restructuring accruals                            3,145         --
     Unrecognized loss on property                        --         --
     Other individually immaterial items                 424        454
- --------------------------------------------------------------------------
         Total deferred tax assets                    $7,275     $3,520
- --------------------------------------------------------------------------
Deferred tax liabilities:
     Tax over book depreciation                      $   532    $   352
     Tax accounting method changes                        70        102
     Payment liabilities deducted                        108        116
     Supplies                                            110        110
- --------------------------------------------------------------------------
         Total deferred tax liabilities              $   820    $   680
- --------------------------------------------------------------------------
Total net deferred tax assets                         $6,455     $2,840
- --------------------------------------------------------------------------

13. QUARTERLY DATA (UNAUDITED)
<TABLE>
<CAPTION>
 ----------------------------------------------------------------------------------------------------------------------------------
 (In thousands                                                                  First           Second        Third        Fourth
 except per share amounts)                                                     Quarter         Quarter       Quarter       Quarter
 ----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                             <C>             <C>            <C>          <C>
1995
Gross revenue .........................................................       $ 30,369       $ 31,116       $ 32,106       $ 28,951
Net revenue ...........................................................         26,276         26,453         26,636         24,044
Income from operations ................................................            528            985            816            126
Net income ............................................................            397            711            650             28
Income per share ......................................................       $   0.05       $   0.09       $   0.08       $   0.01
- ------------------------------------------------------------------------------------------------------------------------------------
1996
Gross revenue .........................................................       $ 28,564       $ 35,881       $ 36,416       $ 36,765
Net revenue ...........................................................         24,607         30,542         31,560         30,996
Income (loss) from operations .........................................            119            790            582        (13,762)
Net income (loss) .....................................................             34            365            259        (10,749)
Income (loss) per share ...............................................       $   0.01       $   0.05       $   0.03       $  (1.26)
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

Historically,  the  Company's  net  revenue is  adversely  affected in the first
quarter  of each year,  primarily  as a result of  restricted  field work due to
weather conditions.



                                       35
<PAGE>

The Board of Directors and Shareholders
EMCON

We have  audited the  accompanying  consolidated  balance  sheets of EMCON as of
December  31,  1996  and  1995,  and  the  related  consolidated  statements  of
operations,  shareholders' equity, and cash flows for each of the three years in
the period  ended  December  31, 1996.  Our audits also  included the  financial
statement schedule listed in the Index at Item 14(a). These financial statements
and  schedule  are  the   responsibility  of  the  Company's   management.   Our
responsibility  is to  express  an opinion  on these  financial  statements  and
schedule based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material respects,  the consolidated financial position of EMCON at December
31, 1996 and 1995, and the  consolidated  results of its operations and its cash
flows for each of the three years in the period  ended  December  31,  1996,  in
conformity with generally accepted accounting principles.  Also, in our opinion,
the related  financial  statement  schedule,  when considered in relation to the
basic  financial  statements  taken as a whole,  present  fairly in all material
respects the information set forth therein.

                                                       Ernst & Young LLP

San Francisco, California
February 6, 1997



                                       36
<PAGE>


Item 9.       CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
              FINANCIAL DISCLOSURE

None
                                    PART III


Item 10.      DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

       The  information  required under this Item is  incorporated  by reference
from the  Registrant's  definitive  proxy  statement for the  Registrant's  1997
Annual Meeting of Shareholders  to be filed with the Commission  within 120 days
of the end of Registrant's fiscal year ended December 31, 1996.

Item 11.      EXECUTIVE COMPENSATION

       The  information  required under this Item is  incorporated  by reference
from the  Registrant's  definitive  proxy  statement for the  Registrant's  1997
Annual Meeting of Shareholders  to be filed with the Commission  within 120 days
of the end of Registrant's fiscal year ended December 31, 1996.

Item 12.      SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

       The  information  required under this Item is  incorporated  by reference
from the  Registrant's  definitive  proxy  statement for the  Registrant's  1997
Annual Meeting of Shareholders  to be filed with the Commission  within 120 days
of the end of Registrant's fiscal year ended December 31, 1996.

Item 13.      CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

       The  information  required under this Item is  incorporated  by reference
from the  Registrant's  definitive  proxy  statement for the  Registrant's  1997
Annual Meeting of Shareholders  to be filed with the Commission  within 120 days
of the end of Registrant's fiscal year ended December 31, 1996.



                                       37
<PAGE>





                                     PART IV

Item 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND
          REPORTS ON FORM 8-K                                             Page

(a)(1)    Financial Statements                                             18

(a)(2)    Schedule II - Valuation and Qualifying Accounts                  40

(b)       Reports on Form 8-K                                              --

          No  reports  on Form 8-K were  filed  during
          the  quarter  ended December 31, 1996.

(c)       Index to Exhibits                                                41

                    Exhibits  filed  herewith  and  attached
                    hereto   under    separate    cover   or
                    incorporated by reference herein will be
                    furnished  to  security  holders  of the
                    Registrant   upon  written  request  and
                    payment  of a fee of $.30 per page which
                    fee   covers   only   the   Registrant's
                    reasonable  expenses in furnishing  such
                    exhibits.






                                       38
<PAGE>




                                   SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                         EMCON

Dated:        3/28/97            By     /s/ Eugene M. Herson
             ---------                  --------------------
                                        Eugene M. Herson
                                        President and Chief Executive Officer

     Pursuant to the  requirements of the Securities  Exchange Act of 1934, this
report  has  been  signed  below  by the  following  persons  on  behalf  of the
Registrant in the capacities and on the dates indicated.

    Signature                        Title                             Date
    ---------                        -----                             ----
/s/Dougals P. Crane     Chairman of the Board and Director        March 28, 1997
- --------------------
Douglas P. Crane

/s/Eugene M. Herson     President, Chief Executive Officer        March 28, 1997
- --------------------    and Director (Principal Executive
Eugene M. Herson        Officer)


/s/R. Michael Momboisse  Chief Financial Officer,                 March 28, 1997
- -----------------------  Vice President - Legal and
R. Michael Momboisse     Secretary (Principal Financial
                         and Accounting Officer)

/s/Donald R. Andres      Vice President and Director               March28, 1997
- --------------------
Donald R. Andres

/s/Richard A. Peluso     Vice President and Director              March 28, 1997
- ---------------------
Richard A. Peluso

                         Director                                 March __, 1997
- -----------------------
Donald R. Kerstetter

/s/Jack M. Marzluft      Director                                 March 28, 1997
- --------------------
Jack M. Marzluft

/s/Peter Vardy           Director                                  March 28 1997
- ---------------
Peter Vardy



                                       39
<PAGE>





                                   SCHEDULE II

                                      EMCON
                        VALUATION AND QUALIFYING ACCOUNTS

                                 (In Thousands)

<TABLE>
<CAPTION>

                                              Additions
                                  Balance     Charged to                Balance
                                at Beginning  Costs and                 at End
                                 of Period     Expenses   Write-offs   of Period
                                ------------  ---------   ----------   ---------
<S>                                 <C>           <C>         <C>           <C>
Allowance for
Doubtful Accounts:

Year Ended
December 31, 1994 .........      $   480      $ 2,889      $(2,394)      $   975

Year Ended
December 31, 1995 .........      $   975      $   765      $  (688)      $ 1,052

Year Ended
December 31, 1996 .........      $ 1,052      $ 1,985      $(2,086)      $   951

</TABLE>




                                       40
<PAGE>




                                INDEX TO EXHIBITS

                                                                    Sequentially
Exhibit                                                               Numbered
Number                                                                  Page
- -----                                                               -----------

2.1    Stock Purchase  Agreement dated January 30, 1996, among Organic     *
       Waste  Technologies,  Inc. ("OWT"),  Registrant and the selling
       shareholders  and   optionholders   of  OWT,   incorporated  by
       reference  from  Exhibit 2.1 of the Current  Report on Form 8-K
       dated March 14, 1996, (the "March 1996 8-K").

3.1    Articles  of   Incorporation,   as  amended,   incorporated  by     *
       reference  from  Exhibit 3.1 of the  Registrant's  Registration
       Statement on Form S-1 (File No. 33-16337)  effective  September
       16, 1987 (the "Form S-1 Registration Statement").

3.2    Certificate of Amendment of Restated  Articles of Incorporation     *
       as  filed  on May 24,  1988,  incorporated  by  reference  from
       Exhibit  3.2 of the  Annual  Report on Form 10-K for the fiscal
       year ended December 31, 1988 (the "1988 10-K").

3.3    Certificate of Amendment of Restated  Articles of Incorporation     *
       as  filed  on June 4,  1991,  incorporated  by  reference  from
       Exhibit 4.1 of the Quarterly Report on Form 10-Q for the fiscal
       quarter ended June 30, 1991 (the "June 1991 10-Q").

3.4    Bylaws, as amended,  incorporated by reference from Exhibit 4.2     *
       of the June 1991 10-Q.

10.1   EMCON  1986   Incentive   Stock  Option  Plan  and   Amendment,     *(1)
       incorporated  by reference  *(1) from Exhibit 10.15 of the Form
       S-1 Registration Statement.

10.2   Form  of  Agreement  pursuant  to  Salary   Continuation  Plan,     *(1)
       incorporated  by *(1)  reference from Exhibit 10.17 of the Form
       S-1 Registration Statement.

10.3   Schedule identifying Agreements pursuant to Salary Continuation     44(1)
       Plan between

10.4   Form of Indemnity  Agreement between the Registrant and each of     *
       the  Registrant's  officers  and  directors,   incorporated  by
       reference from Exhibit 10.20 of the Registrant's  Annual Report
       on Form 10-K for the fiscal year ended  December  31, 1988 (the
       "1988 10-K").

10.5   EMCON 1988 Stock Option Plan,  amended by shareholder  approval     *(1)
       on May  25,1994,  *(1)  including  form of  Nonqualified  Stock
       Option Agreement (Outside Directors), incorporated by reference
       from Exhibit 10.9 of Registrant's Quarterly Report on Form 10-Q
       for the fiscal  quarter ended June 30, 1994 (the "June 30, 1994
       10-Q").

10.6   EMCON Employee Stock  Purchase Plan  incorporated  by reference     *(1)
       from Exhibit 10.10 of the Registrant's Quarterly Report on Form
       10-Q for the fiscal quarter ended June 30, 1995.



                                  41
<PAGE>


                                                                    Sequentially
Exhibit                                                               Numbered
Number           INDEX TO EXHIBITS (Continued)                          Page
- -----                                                               -----------
10.7   EMCON  Restricted  Stock Plan  incorporated  by reference  from     *(1)
       Exhibit  10.15 of the Annual Report on Form 10-K for the fiscal
       year ended December 31, 1990.

10.8   EMCON Deferred  Compensation  Plan  effective  January 1, 1994,     *(1)
       incorporated   by   reference   from   Exhibit   10.12  of  the
       Registrant's  Annual  Report on Form 10-K for the  fiscal  year
       ended December 31, 1993 (the "1993 10-K").

10.9   Trust  Agreement for the EMCON Deferred  Compensation  Plan and     *(1)
       Salary Continuation Plan Trust dated February 19, 1994, between
       Registrant and Wells Fargo Bank, N.A. incorporated by reference
       from Exhibit 10.13 of the 1993 10-K.

 10.10 Agreement   between  Eugene  M.  Herson  and  Registrant  dated     *(1)
       November 30, 1995, incorporated by reference from Exhibit 10.21
       of Registrant's  Annual Report on Form 10-K for the fiscal year
       ended December 31, 1995 (the "1995 10-K").

10.11  Agreement  between R. Michael  Momboisse and  Registrant  dated     *(1)
       November 10, 1995, incorporated by reference from Exhibit 10.22
       of the 1995 10-K..

10.12  Credit  Agreement  between  The Bank of  California,  N.A.  and     *
       Registrant  dated February 29, 1996,  incorporated by reference
       from Exhibit 10.2 of the March 1996 8-K.

10.13  Security  Agreement  between The Bank of  California,  N.A. and     *
       Registrant  dated February 29, 1996,  incorporated by reference
       from Exhibit 10.3 of the March 1996 8-K.

10.14  Pledge  Agreement  between  The Bank of  California,  N.A.  and     *
       Registrant  dated February 29, 1996,  incorporated by reference
       from Exhibit 10.4 of the March 1996 8-K.

10.15  Eurodollar   Rate   Option   Agreement   between  The  Bank  of     *
       California,  N.A.  and  Registrant  dated  February  29,  1996,
       incorporated  by reference  from Exhibit 10.5 of the March 1996
       8-K.

 10.16  Fixed Rate  Amortization  Option Agreement  between The Bank of    *
       California,  N.A.  and  Registrant  dated  February  29,  1996,
       incorporated  by reference  from Exhibit 10.6 of the March 1996
       8-K.

10.17  Note Agreement among the Registrant, OWT, and certain employees     *
       of OWT , *  incorporated  by reference from Exhibit 10.1 of the
       March 1996 8-K.

10.18  Rescission and Reformation  Agreement dated effective  November     45
       1, 1996 among EMCON, OWT, and certain employees of OWT.

10.19  New Note  Agreement  dated  effective  November  1, 1996  among     66
       EMCON, OWT and certain employees of OWT.



                                  42
<PAGE>
                                                                    Sequentially
   Exhibit                                                            Numbered
   Number           INDEX TO EXHIBITS (Continued)                       Page
- --------------                                                      -----------
10.20  Asset Purchase  Agreement  between Yolo Energy Partners,  Inc.,     78
       Yolo  Landfill  Gas  Corporation,  EMCON,  Yolo  Neo  LLC,  and
       Minnesota Methane LLC dated December 31, 1996.

10.21  Second  Amendment to Credit  Agreement dated effective  January     111
       27,  1997  among  EMCON  and  Union  Bank of  California,  N.A.
       (formerly known as The Bank of California, N.A.)

10.22  Acquisition  Agreement  between  EMCON  and  its  wholly  owned     112
       subsidiary,  Monterey  Landfill  Gas  Corporation  and  Biomass
       Energy Partners V, L.P., dated March 6, 1997

10.23  Third  Amendment to Credit  Agreement dated effective March 27,     123
       1997 among EMCON and Union Bank of California,  N.A.  (formerly
       known as The Bank of California, N.A.)

11.1   Computation of Income (Loss) Per Share.                             124

21.1   Significant Subsidiaries of Registrant.                             125

23.1   Consent of Ernst & Young, LLP, Independent Auditors.                126

27     Financial Data Schedule, included herein.                           127


*   Incorporated by reference
(1) Management contract or compensatory plan or arrangement required to be filed
    as an exhibit to this form  pursuant  to Item 14(c) of the  instructions  to
    Form 10-K.



                                  43
<PAGE>

                             EXHIBIT 10.3

                                 EMCON
                 SALARY CONTINUATION PLAN PARTICIPANTS


                           Monthly Payments
                --------------------------------------
                                      Salary                    Date Payments
          Participant             Continuation   Non-compete       Commence
- --------------------------------------------------------------------------------

Thorley D. Briggs ..............      $1,800      $1,200      January       1993
                                      $1,200      $  800      July          1993
John G. Pacey ..................         -0-      $1,080      January       1993
Donald R. Andres ...............      $1,800      $1,200      January       1993
Richard J. Leach ...............         -0-      $  819      January       1993
Fred W. Cope ...................      $  600      $  400      January       1994
Robert E. Van Heuit ............         -0-      $  400      January       1994
H. Randolph Sweet ..............      $1,350      $  900      April         1997
Eugene M. Herson ...............      $1,800      $1,200      November      2000
                                      $2,700      $1,800      November      2004
R. Michael Momboisse ...........      $  600      $  400      January       2003
                                      $1,200      $  800      November      2004
                                      $  600      $  400      November      2006
Gary O. McEntee ................      $  600      $  400      November      2004
Mark H. Shipps .................      $1,800      $1,200      March         2006
Alan Ortiz .....................      $1,200      $  800      October       2006


                                       44


                                  EXHIBIT 10.18

                      RESCISSION AND REFORMATION AGREEMENT


         This  Rescission  and  Reformation  Agreement is entered into
effective as of November 1, 1996 (the  "Effective  Date") by and among
EMCON, a California corporation ("EMCON"); Organic Waste Technologies,
Inc., a Delaware  corporation  (the  "Company");  and the  undersigned
former  holders of the  Company's  common stock and options to acquire
the Company's common stock  (individually a "Management  Stakeholder,"
and collectively the "Management Stakeholders").

                                    RECITALS

         A. Pursuant to a Stock Purchase  Agreement entered into as of
January  30,  1996  (the  "Stock  Purchase  Agreement"),  the  Company
purchased (the  "Purchase") from the Management  Stakeholders  some or
all of the  shares of the  Company's  common  stock  (the  "Shares  at
Issue") and options to purchase  shares of the Company's  common stock
(the "Options at Issue") held by each such  Management  Stakeholder as
set forth opposite such Management  Stakeholder's name on Exhibit A in
exchange for a convertible  promissory note executed by the Company, a
copy of which is set forth on  Exhibit B  (individually  a "Note"  and
collectively the "Notes").

         B. EMCON  guaranteed  payment of the Notes and entered into a
note  agreement  in the  form  set  forth  as  Exhibit  C  (the  "Note
Agreement"),  pursuant to which, among other obligations, EMCON agreed
to (i) exchange each Note for shares of EMCON common stock if the Note
had not been converted  into the Company's  common stock in accordance
with the terms of the Note prior to the fifth  anniversary of the date
of the Note  Agreement  and (ii)  loan  each  Management  Stakeholder,
pursuant  to the terms of a loan  agreement  set forth as Exhibit A to
the Note  Agreement  (the "Loan  Agreement"),  an amount  equal to any
federal,  state and local  income  taxes  required  to be paid by each
Management  Stakeholder  as a  result  of the  Purchase.  None  of the
obligations  set forth in the Note  Agreement has arisen and EMCON has
not executed any Loan Agreement.

         C. The  purchase  of the  Options  at  Issue  by the  Company
resulted in cancellation of the Options at Issue. The parties intended
that the  portion of the  principal  amount of the Notes  representing
payment  for the  Options  at Issue,  plus  interest  related  thereto
(collectively  the  "Option  Payment  Amounts"),  be a mere  unfunded,
unsecured  promise of the  Company,  guaranteed  by EMCON,  to pay the
Option Payment Amounts in the future, when due.

         D. The parties  desire to rescind  the  Purchase ab initio so
that the  Management  Stakeholders  shall own the  Shares at Issue and
Options  at  Issue  held  by  each  of  them   immediately   prior  to
consummation of the Purchase.

         E. The Management Stakeholders desire to sell their Shares at
Issue  and the  Company  desires  to  acquire  the  Shares at Issue in
exchange for new  promissory  notes (the "New Notes") in the same form
set forth in the Notes, but in the amounts set forth in Exhibit D. The
Management   Stakeholders  desire  to  have  their  Options  at  Issue
canceled,  and the Company  desires to cancel  such  Options at Issue,
pursuant to the terms of this Agreement.

                                       45
<PAGE>

         F.  Capitalized  terms not defined  herein have the same meaning as set
forth in the Stock Purchase Agreement.

                                    AGREEMENT

         1. RESCISSION.  EMCON, the Company and Management  Stakeholders  hereby
rescind the Purchase ab initio,  and thereby  undo such  Purchase so as to place
the parties for all purposes with respect to the Shares at Issue and the Options
at Issue in the same position as of the Effective  Date in which they would have
been had such Purchase never occurred.  To effect such  rescission,  the parties
agree that:

             (a) STOCK  PURCHASE  AGREEMENT.  With respect to the Purchase,  the
Stock  Purchase  Agreement is of no force and effect,  except as  otherwise  set
forth herein. All of the parties to the Stock Purchase Agreement remain bound by
the Stock  Purchase  Agreement  for all  other  purposes,  including,  by way of
example  but  not by way of  limitation,  (i) all  representations,  warranties,
covenants,  agreements,  objections  and rights  other than with  respect to the
Purchase,  and  (ii) all  representations,  warranties,  covenants,  agreements,
obligations, rights and actions of any person who is a Management Stakeholder in
any capacity other than as a Management Stakeholder.  In addition, Sections 12.1
to 12.8 of the Stock Purchase  Agreement apply with full force and effect to the
transactions contemplated by this Agreement.

             (b) OPTIONS AT ISSUE AND SHARES AT ISSUe.  Pursuant to this Section
1, the Management  Stakeholders  own the Shares at Issue and Options at Issue as
of the Effective  Date,  and the  assignment of the Options at Issue executed by
each of the Management Stakeholders pursuant to the Stock Purchase Agreement and
the cancellation thereof is null and void.

             (c)  NOTES.  The  Management  Stakeholders  have  marked  the Notes
canceled and have returned the original, executed Notes to the Company.

             (d) NOTE AGREEMENT. The Note Agreement is null and void.

         2. SALE OF SHARES AT ISSUE.  The  Management  Stakeholders  hereby sell
their  Shares at Issue to the Company and the Company  hereby buys the Shares at
Issue of each of the Management  Stakeholders  in exchange for a New Note in the
amount  and form set forth as  Exhibit  D. The  parties  hereto  agree that as a
result of the sale pursuant to this Agreement, it shall not be necessary for the
Company to reissue certificates for the Shares at Issue to effect the rescission
set forth in Section 1.

         3.  CANCELLATION  OF OPTIONS AT ISSUE.  The Options at Issue are hereby
canceled in exchange for the  Company's  unfunded,  unsecured  promise to pay to
Management  Stakeholders  the  amounts  set  forth  on  Exhibit  D (the  "Option
Cancellation  Amounts"),  on the dates set forth on Exhibit D. The Company shall
have no right to prepay the Option Cancellation Amounts.

             (a) ISSUANCE OF COMPANY STOCK. If the Company consummates a sale of
the Company's  common stock (the "OWT Common Stock") to the public pursuant to a
firm  commitment  underwritten  public  offering  in an  amount  of at least Ten
Million Dollars ($10,000,000) or any lesser amount as may be approved in writing
by Mark H. Shipps,  (the  "Initial  Public  Offering")  at any time prior to the
expiration  of the term  hereof,  upon the  consummation  of the Initial  Public


                                       46
<PAGE>

Offering,   the  Option  Base  Amount  as  set  forth  on  Exhibit  D  shall  be
automatically  converted  (the  "Conversion")  into shares of OWT Common  Stock,
pursuant to the terms of this  Section 3. In such event,  a pro-rata  portion of
the unpaid  Option  Cancellation  Amounts  for each of the first  through  fifth
periods  set forth on  Exhibit D shall be  immediately  due and  payable  by the
Company to the Management Stakeholders,  based on the Option Cancellation Amount
for each such  period  multiplied  by the ratio of (i) the number of days within
such period which have elapsed prior to the Conversion divided by (ii) the total
number of days in such period (the "Period Ratio");  provided,  however, that if
the Option  Cancellation  Amount for the first period has not been paid in full,
the amount paid shall  include the First  Period  Acceleration  Penalty plus the
product  of (x) the  Remainder  set forth on Exhibit  D,  multiplied  by (y) the
Period Ratio for the first period.

                 (1) CONVERSION  PRICE. The number of shares of OWT Common Stock
into which the Option Base Amount shall be converted  shall be the amount of the
Option Base Amount,  divided by the OWT  Conversion  Price.  The OWT  Conversion
Price shall  initially be Four Dollars and Eighty  Cents  ($4.80),  and shall be
adjusted as set forth in Section 3(a)(2) hereof.

                 (2)  ADJUSTMENTS  TO OWT CONVERSION  PRICE.  The OWT Conversion
Price shall be adjusted as set forth in this section 3(a)(2):

                      (i)  SUBDIVISIONS.  If  the  Company  shall  at  any  time
subdivide the outstanding  shares of OWT Common Stock,  the OWT Conversion Price
in  effect  immediately  prior  to such  subdivision  shall  be  proportionately
decreased,  and in case the Company  shall at any time  combine the  outstanding
shares of OWT Common Stock, the OWT Conversion Price in effect immediately prior
to such combination shall be proportionately  increased,  effective at the close
of business on the date of such subdivision or combination, as the case may be.

                      (ii) STOCK DIVIDENDS. If the Company shall at any time pay
a dividend with respect to OWT Common Stock  payable in OWT Common  Stock,  then
the OWT  Conversion  Price in effect  immediately  prior to the record  date for
distribution  of such  dividend  shall be adjusted to that price  determined  by
multiplying the OWT Conversion Price in effect  immediately prior to such record
date by a  fraction  (i) the  numerator  of which  shall be the total  number of
shares of OWT Common Stock  outstanding  immediately  prior to such dividend and
(ii) the  denominator of which shall be the total number of shares of OWT Common
Stock outstanding immediately after such dividend.

                      (iii) RECLASSIFICATION OR MERGER. If any reclassification,
change or conversion of the OWT Common Stock occurs (other than as a result of a
subdivision or combination  described above and other than upon any Acceleration
Event, as defined below),  the Management  Stakeholders  shall have the right to
receive,  the kind and amount of shares of stock,  other  securities,  money and
property receivable upon such reclassification, change or conversion by a holder
of the number of shares of OWT Common  Stock into which the Option  Base  Amount
could  then be  exchanged  in the event  that an  Initial  Public  Offering  had
occurred.  The provisions of this  subparagraph  (iii) shall  similarly apply to
successive reclassifications, changes, and conversions.

                      (iv) ANTI-DILUTION  PROTECTion.  If the Company issues and
sells shares of OWT Common Stock to EMCON or affiliated companies of EMCON, at a
price per share that is less than the OWT Conversion Price then in effect,  then
the OWT Conversion Price shall be adjusted to equal such per share price.

                                       47
<PAGE>

                 (3)  Participation in Initial Public  Offering.  If the Company
undertakes  an  Initial   Public   Offering  or  any  other  public   registered
underwritten  offering  pursuant to the  Securities Act of 1933, as amended (the
"Act"),  each Management  Stakeholder may, at his option, sell the shares of OWT
Common  Stock into which the Option  Base  Amount may be  converted  pursuant to
Section 3 hereof on a pro rata  basis  with  EMCON and the other  holders of OWT
Common  Stock  participating  in such  offering,  subject to the approval of the
managing underwriters for such offering. This right shall expire at such time as
Management  Stakeholder  may sell all shares of OWT Common  Stock into which the
Option Base Amount may be converted  in any three month period  pursuant to Rule
144 under the Act. The procedures and terms of such registration rights shall be
as set forth in Sections 4 to 7 of the Agreement Note (as defined below).

             (b) OFFSET.

                 (1)  The  Option  Cancellation  Amounts  due  hereunder  may be
reduced by any amounts due from the Management  Stakeholder to EMCON pursuant to
Section 12.2 of the Stock  Purchase  Agreement,  which  section  remains in full
force and effect.

                 (2) In addition, the Option Cancellation Amounts may be reduced
by any amount  outstanding from the Management  Stakeholders under the Loan Note
(as defined in the Note Agreement) which the Management  Stakeholders  then owes
to OWT or EMCON.

             (c) ACCELERATION.

                 (1) Notwithstanding  anything to the contrary herein, if any of
the events set forth in  paragraphs  (a) through (h) of this Section 3(c) (each,
an "Acceleration Event") shall occur at any time after the date hereof, then, at
the option of the  Management  Stakeholders,  the  Option  Base  Amount,  plus a
pro-rata portion of the unpaid Option Cancellation Amounts for each of the first
through  fifth  periods  set  forth on  Exhibit D shall be  immediately  due and
payable by the Company to the Management  Stakeholders.  The pro-rata portion of
the unpaid  Option  Cancellation  Amounts for each period  shall be based on the
Option  Cancellation Amount for each such period multiplied by the Period Ratio;
provided,  however,  that if the Option Cancellation Amount for the first period
has not been paid in full,  the  amount  paid  shall  include  the First  Period
Acceleration  Penalty plus the product of (x) the Remainder set forth on Exhibit
D,  multiplied  by (y) the Period Ratio for the first  period.  An  Acceleration
Event includes the following:

                      (i) upon a  consolidation  or merger of EMCON with or into
any other corporation or corporations  (other than a wholly-owned  subsidiary of
EMCON and other than a merger in which EMCON is the surviving  corporation),  or
the sale,  transfer  or other  disposition  of all or  substantially  all of the
assets of EMCON;

                      (ii) upon a change in ownership of Fifty  Percent (50%) or
more,  in a single  transaction,  of the stock of the Company,  other than to an
affiliate or affiliates of EMCON which does not materially  alter EMCON's direct
or indirect ownership of the Company;

                      (iii) upon a change in ownership of Fifty Percent (50%) or
more, in a series of two (2) or more  transactions,  of the outstanding stock of
the  Company,  other than to an  affiliate  or  affiliates  of the Company and a
substantial diminution in the responsibilities of Mark H. Shipps with respect to
the Company in his capacity as an employee of EMCON;

                                       48
<PAGE>

                      (iv) upon a change in  ownership  of  Thirty-Five  Percent
(35%) or more of the stock of EMCON to a single buyer or an affiliated  group of
buyers, resulting in a change in the majority of the board of directors of EMCON
from the board of  directors as it existed  immediately  prior to such change in
ownership,  or upon a change in ownership of Fifty  Percent  (50%) or more, in a
single transaction, of the stock of EMCON;

                      (v) upon the liquidation, dissolution or winding up of the
Company or the  consolidation  or merger of the  Company  with and into  another
corporation  (other  than a  merger  in  which  the  Company  is  the  surviving
corporation);Error! Bookmark not defined.

                      (vi) upon the occurrence of any  transaction,  without the
consent  of Mark  H.  Shipps,  in  which  Twenty  Percent  (20%)  or more of the
outstanding stock of the Company becomes owned by persons other than EMCON or an
affiliate or affiliates of EMCON;

                      (vii)  upon the death of the  Management  Stakeholders  or
termination of the  Management  Stakeholders'  employment by the Company,  other
than a  Termination  for Cause.  "Termination  for Cause" is intended to embrace
intentionally  or  grossly  negligent  conduct  on the  part  of the  Management
Stakeholders which is materially detrimental to the operations and/or reputation
of the Company or EMCON. By way of illustration such actions would include (but
would not be  limited  to) a  material  breach of the  Management  Stakeholders'
obligations under any employment  agreement between the Management  Stakeholders
and OWT and/or  conviction  of a crime  (other  than minor  infractions  such as
parking or similar  traffic  violations),  moral turpitude and revocation by the
applicable licensing authority of professional licenses (if any) material to the
Management   Stakeholders'  ability  to  perform  the  Management  Stakeholders'
employment obligations;

                      (viii)  upon  a  fundamental  change  in  EMCON's  current
strategy  of  focussing  a material  amount of  EMCON's  resources  on  services
relating to the design,  construction,  ownership,  operation and maintenance of
infrastructure;  provided,  however, that upon any Acceleration Event, no amount
shall be due and payable hereunder in the event that the Management  Stakeholder
has  exchanged  this  Note for  common  stock  of  EMCON,  pursuant  to the Note
Agreement.

         4. NOTE AGREEMENT. The parties hereto shall enter into a note agreement
substantially in the form attached hereto as Exhibit E.

         5.  CONSISTENT  TREATMENT.  Each  party  shall  treat the  Purchase  as
rescinded  for all  purposes  and shall  take no action  inconsistent  with such
treatment.

         6.   REPRESENTATIONS  AND  WARRANTIES  OF  THE  COMPANY.   The  Company
represents and warrants, as of the Date of the Deposit, to EMCON that, except as
set forth on the Company  Disclosure  Schedule and without  giving effect to the
Contemplated Transactions:

             (a) CORPORATION ORGANIZATION.

                 (1) The Company is a corporation,  duly  incorporated,  validly
existing  and in good  standing  under  the laws of the State of  Delaware.  The
Company  has all  requisite  corporate  power  to own,  operate  and  lease  its
properties  and to conduct its business as now being  conducted.  The Company is
duly qualified or licensed to do business,  and is in good standing as a foreign
corporation,  in each  state or other  jurisdiction  in which it owns or  leases


                                       49
<PAGE>

properties  or where the nature of its  business  or  operations  requires  such
qualification  or  licensing,  unless  the  failure  to do so  would  not have a
material  adverse  effect  on the  Company's  assets,  business,  operations  or
financial  condition.  To the knowledge of the Company, the Company has obtained
all approvals, authorizations, consents, licenses, clearances and orders of, and
has currently  effective all registrations with, all governmental and regulatory
authorities  that are  necessary to the conduct of its business or operations as
now being conducted, except where the failure to do so would not have a material
adverse effect on the Company.

                 (2)  The  only  Subsidiaries  of  the  Company  are:  Omni  Gen
Technologies,  Inc., an Ohio corporation ("Omni Gen"); Keystone Recovery,  Inc.,
an Ohio corporation  ("Keystone");  LFG  Specialties,  Inc., an Ohio corporation
("LFG"); O.W.T.  Construction Company, an Ohio corporation ("OWT"); and American
Landfill  Supply  Co.,  an Iowa  corporation  ("ALS")  (collectively,  Omni Gen,
Keystone, LFG, OWT and ALS, the "Company Subsidiaries"). (Except where otherwise
indicated or, given the context otherwise appropriate,  references herein to the
"Company"  shall  also  include  the  Company  Subsidiaries.)  Except for a five
percent (5%) minority interest in Keystone,  as of the Closing Date, the Company
will own all of the issued and outstanding  capital stock of each of the Company
Subsidiaries.  Each of the Company  Subsidiaries is duly  incorporated,  validly
existing  and in good  standing in the state of its  incorporation.  Each of the
Company Subsidiaries has all requisite corporate power to own, operate and lease
its properties and to conduct its business as now being  conducted.  Each of the
Company  Subsidiaries  is duly  qualified or licensed to do business,  and is in
good standing as a foreign  corporation in each state or other  jurisdiction  in
which it owns or leases  properties  or where  the  nature  of its  business  or
operations requires such qualification or licensing, unless the failure to do so
would not have a material adverse effect on its assets, business,  operations or
financial  condition.  To the  knowledge  of the  Company,  each of the  Company
Subsidiaries  has obtained all approvals,  authorizations,  consents,  licenses,
clearances and orders of, and has currently  effective all  registrations  with,
all governmental and regulatory  authorities  which are necessary to the conduct
of its business or operations as now being  conducted,  except where the failure
to do so would not have a material adverse effect on the Company.

             (b) CAPITALIZATION.

                 (1) The authorized capital stock of the Company consists solely
of 7,500,000  shares of common stock,  $0.01 par value,  and 2,841,481 shares of
preferred  stock,  $0.01 par value,  1,360,000 of which are designated  Series A
Preferred  Stock,  740,740 of which are designated  Series B Preferred Stock and
740,741 of which are designated  Series C Preferred  Stock.  There are currently
issued and  outstanding  712,000  shares of common  stock,  1,360,000  shares of
Series A Preferred Stock, 740,740 shares of Series B Preferred Stock and 740,741
shares of Series C Preferred Stock. The Company Disclosure Schedule sets forth a
true and complete  description of the authorized,  issued and outstanding shares
of the capital stock of the Company and each of the Company Subsidiaries showing
all  stockholders of the Company and each of the Company  Subsidiaries as of the
date of this Agreement.  All of the issued and outstanding shares of the Company
and the Company Subsidiaries are duly authorized, validly issued, fully paid and
nonassessable  except where  failure to be so would not have a material  adverse
effect on the business,  financial position or operating results of the Company.
All such shares have been issued in accordance with federal and applicable state
securities  laws concerning the issuance of securities.  The Company  Disclosure
Schedule  accurately  lists all holders of the Company's  capital stock and each
such person's actual ownership interest. The rights,  preferences and privileges
of the Company's  capital stock are as stated in the  Company's  Certificate  of
Incorporation, as heretofore amended.

                                       50
<PAGE>

                 (2) Except for the  Options and as  otherwise  set forth in the
Company  Disclosure  Schedule,  no  options,  warrants,  conversion  privileges,
preemptive  rights,  rights to first  refusal  or other  rights,  agreements  or
commitments  written or  otherwise  by the  Company or to the  knowledge  of the
Company by any Management  Stakeholder are currently  outstanding to purchase or
otherwise  receive  any of the  capital  stock  of the  Company  or the  Company
Subsidiaries.

                 (3)  The  Company  has  delivered  to the  Buyer  complete  and
accurate copies of the Certificates of Incorporation  and Bylaws  (including all
amendments  thereto) of the Company  and each of the Company  Subsidiaries.  Not
less than  twenty  (20) days  before  the  Closing  Date the  Company  will make
available  to the  Buyer  the  minute  books  of the  Company  and  the  Company
Subsidiaries containing minutes for all meetings of, and written consents issued
by the Company and executed by, each such corporation's  stockholders,  Board of
Directors  and all  committees of such Board since the date of  organization  of
such corporation.

             (c) CORPORATE  AUTHORITY.  The Company has all requisite  corporate
authority  and  power to  execute  and  deliver  this  Agreement  and the  other
agreements  referenced herein and to perform all of its obligations with respect
to the  Contemplated  Transactions.  The execution,  delivery and performance of
this Agreement and the other agreements  referenced  herein and the consummation
of the transactions  contemplated  hereby and thereby have been duly authorized,
or prior to the  Closing  will be duly  authorized,  by the  Company's  Board of
Directors and, if required, by its stockholders.

             (d) DISSOLUTION;  FORFEITURE.  No action at law or in equity and to
the Knowledge of the Company no investigation  or proceeding,  whatsoever is now
pending or threatened to: (a) liquidate,  dissolve or disincorporate the Company
or any of the Company  Subsidiaries,  (b) declare any of the  corporate  rights,
powers or  privileges of the Company or any of the Company  Subsidiaries,  to be
null and void or otherwise  than in full force and effect,  (c) declare that the
Company  or any of the  Company  Subsidiaries,  or their  respective  Boards  of
Directors or any of their respective officers,  agents or employees has exceeded
or violated any of their respective corporate rights,  powers or privileges,  or
(d) obtain any  decree,  order,  judgment  or other  judicial  determination  or
administrative or other ruling that would or might impede or detract from any of
the  corporate  rights,  powers or  privileges  now  vested in or claimed by the
Company or any of the Company Subsidiaries.

             (e) THE COMPANY FINANCIAL  STATEMENTS.  The consolidated  financial
statements  of the Company  for the fiscal  years  ended  December  31, 1993 and
December 31, 1994 have been  prepared and audited in  accordance  with GAAP (the
"Audited Financial Statements") and the consolidated financial statements of the
Company for year ended December 31, 1995 (the "Unaudited Financial  Statements")
(collectively,  the Audited  Financial  Statements  and the Unaudited  Financial
Statements being referred to as the "Company  Financial  Statements")  have been
prepared in accordance  with GAAP and fairly  present the financial  position of
the Company in accordance with GAAP as at the dates thereof; provided,  however,
that the Unaudited Financial  Statements do not contain the footnote disclosures
required by GAAP.

             (f) Absence of Unaccrued  or  Undisclosed  Liabilities.  Except for
claims, liabilities or obligations:

                                       51
<PAGE>

                 (1)  which  were  properly  reflected  or  adequately  reserved
against  in the  balance  sheet  included  as  part of the  Unaudited  Financial
Statements;

                 (2) which were  incurred  in the  Ordinary  Course of  Business
since December 31, 1995;

                 (3) which are listed on the Company Disclosure Schedule;

                 (4) which are less than $25,000 in any single case; or

                 (5) which  result from any failure to properly  account for any
of the Company's  estimated  project costs and/or project revenue  recognized in
the Audited Financial  Statements or Unaudited  Financial  Statements and which,
taken in the aggregate  with all other accrued  project and related costs and/or
revenue  recognized as of December 31, 1995, do not result in a net reduction in
the aggregate  profit  recognized  by the Company on all projects  subsequent to
December 31,  1995,the  Company does not have any material  liabilities  whether
absolute, accrued,  unaccrued,  contingent or otherwise whether due or to become
due.

                 Except  as set  forth in  paragraphs  (1)  through  (5) of this
Section  6(f),  the Company  does not have  knowledge  of and has no  reasonable
grounds  to know of any basis  for any  assertion  against  the  Company  of any
material claims, liabilities or obligations of any nature required by GAAP to be
reflected in a corporate  balance  sheet which have not been fully  reflected or
reserved  against in the December 31, 1995 balance sheet included as part of the
Unaudited Financial Statements,  provided, however, that no limitation set forth
in this  Section  6(f)  shall in any way  affect  any  other  representation  or
warranty contained in this Agreement.

                 (g) ABSENCE OF CERTAIN  CHANGES.  Since December 31, 1995 there
has not been  any:  (1)  material  adverse  change  in the  business,  financial
condition or operations of the Company and the Company  Subsidiaries  taken as a
whole,  (2)  recapitalization,  amendment to the Certificate of Incorporation or
Bylaws or any change in,  authorization,  creation,  issuance or  agreement  for
issuance of, the capital stock or any securities  convertible  into, or options,
warrants  or other  rights to  subscribe  to any shares of capital  stock of the
Company or the Company Subsidiaries, or any declaration setting aside or payment
of any dividend or distribution  (whether in cash,  securities or property) with
respect   thereto,   except  as  contemplated   hereby,   (3)  increase  in  the
compensation, direct or indirect, payable to any of the officers or employees of
the Company or the Company  Subsidiaries,  including  adoption of or increase in
any  bonus,  insurance,  pension  or other  employee  benefit  plan,  payment or
arrangement, or any other agreement or arrangement with its officers,  employees
or stockholders,  except as contemplated hereby, (4) unwaived default in respect
of any Material Contracts (as defined in Section 6(n), except for such defaults,
if any, which do not have a material  adverse effect on the financial  position,
business or operating results of the Company, (5) material change in the methods
and  procedures  employed in keeping the books and records of the Company or the
Company Subsidiaries or (6) strike or material labor dispute.

                 (h) TAXES.  All tax  returns  of the  Company  required  by law
(including, without limitation, all income, unemployment compensation,  worker's
compensation,  Social Security,  excise, privilege and franchise tax laws of the
United States or any state or municipal subdivision thereof) to be filed through
the Closing Date (true and complete  copies of which have been made available to
the  Buyer)  have  been or  will  be  duly  and  timely  filed,  and all  taxes,
assessments,  contributions,  fees and governmental charges or impositions shown
on said returns or reports  (other than those not yet due and payable or payable
without penalty or interest) have been paid, except where any failure to so file


                                       52
<PAGE>
or pay would,  individually or in the aggregate,  have a material adverse effect
on the Company and the Company  subsidiaries,  taken as a whole. The Company has
not received any notice of assessment of any federal,  state, municipal or other
tax upon or measured by its income and, to the Company's knowledge,  there is no
basis for an additional  assessment of any such tax,  except for those for which
the Company has  established  adequate  reserves.  The Company has not knowingly
waived any law or  regulation  fixing,  or  consented to the  extension  of, any
period of time for the assessment of any tax or other  governmental  imposition,
or become  committed  so to do.  There are no audits of the Company  pending and
there are no matters under discussion with any federal,  state, local or foreign
authorities with regard to the payment of any taxes by the Company. There are no
issues that have been raised by the IRS or other taxing  authority in connection
with an  examination or otherwise  which by  application  of similar  principles
could  reasonably be expected to result in a proposed  deficiency for any period
not examined.

                 (i) TITLE TO PROPERTIES; ACCOUNTS RECEIVABLE

                      (1) Except for  property  and assets  that the Company has
disposed of in the Ordinary  Course of Business,  the Company has, and will have
at the Closing Date,  good and  marketable  title to all  properties  and assets
shown or  represented  on the balance  sheet  included as part of the  Unaudited
Financial  Statements or acquired since December 31, 1995, free and clear of all
mortgages,  pledges,  liens,  defects in title,  conditional sale agreements and
other  encumbrances,  except for  liens,  encumbrances  and  defects in title in
respect of property or assets of the Company  which:  (i) are  incidental to the
conduct of the Company's  business;  (ii) have arisen in the Company's  Ordinary
Course of Business;  (iii) were not incurred in connection with the borrowing of
money or the  obtaining  of advances or credit  (other than credit  arrangements
related to purchase  money liens);  and (iv) do not in the aggregate  materially
detract from the property and assets of the Company.  The Company has  performed
all the  obligations  required to be  performed by it with respect to all assets
leased by it through the date hereof,  except where the failure to perform would
not have a material adverse effect on the business or financial condition of the
Company.  The Company enjoys peaceful and  undisturbed  possession of all of its
offices,  warehouses,   buildings  and  all  other  real  property  and  related
facilities, whether owned, leased or operated (collectively,  the "Facilities"),
and such  Facilities  are not subject to any claims,  liens,  pledges,  options,
charges,  easements,  security interests,  rights-of-way,  encumbrances or other
rights,  or  any  encroachments,  building  or  use  restrictions,   exceptions,
reservations  or  limitations  which in any material  respect  interfere with or
impair the present and continued use thereof in the usual and normal  conduct of
its  business.  There are no  pending  or  threatened  condemnation  proceedings
relating  to any  of the  Facilities.  The  Facilities  and  the  real  property
improvements  (including leasehold  improvements),  equipment and other tangible
assets  owned or used by the  Company at the  Facilities  are insured in amounts
believed by the Company to be adequate and, to the Knowledge of the Company, are
structurally  sound with no material defects.  Said items are not subject to any
commitment  or other  arrangement  for their sale by the Company or use by third
parties  other than  commitments  or  arrangements  entered into in the Ordinary
Course of  Business.  The assets are valued at or below the lower of fair market
value or actual cost less an adequate and proper  depreciation  charge.  For tax
purposes,  the  Company  has not  depreciated  any of the  assets in any  manner
inconsistent with applicable IRS guidelines, if any.

                      (2) All tangible  property,  real and  personal,  owned or
leased by the Company is in good  operating  condition  and  repair,  except for
ordinary wear and tear and any defects the cost of repairing which, singly or in


                                       53
<PAGE>

the aggregate, would not be material or are accrued for on the Company Financial
Statements. To the knowledge of the Company, such property is in conformity with
all  applicable  laws,  ordinances,   orders,   regulations,   rules  and  other
requirements (including applicable zoning,  environmental,  motor vehicle safety
or standards,  occupational safety and health laws and regulations) currently in
effect and relating thereto,  except where the failure to conform would not have
a material adverse effect on the business,  operations or financial condition of
the Company.

                      (3) All accounts  receivable  of the Company  shown on the
Company  Financial  Statements are valid,  genuine and subsisting,  arose in the
Ordinary Course of Business,  and the aggregate  amount thereof less the reserve
for doubtful  accounts with respect  thereto set forth in the Company  Financial
Statements, are, to the best knowledge of the Company after due inquiry, current
and collectible within customary payment terms.

                  (j) Proprietary Rights.

                      (1) The  Company  owns the  rights to use all  trademarks,
trade secrets, trade names, copyrights,  processes, designs, formulas, know-how,
inventions,  licenses and  intellectual  property rights used in connection with
its  business  and the same are  believed  by the  Company to be  sufficient  to
conduct such  business as it is now or  heretofore  has been  conducted  with no
known or asserted conflict with or infringement of the asserted or actual rights
of others.  The Company has no Knowledge of any  infringement by any third party
in connection with any of the foregoing and the Company has not taken or omitted
to take any action  which  would  have the  effect of waiving  any of its rights
thereunder, in each case except where such infringement or waiver would not have
a material adverse effect on the business,  prospects,  condition  (financial or
otherwise)  or results of  operations  of the Company.  To the  Knowledge of the
Company, no third party has filed or been issued or granted any applications for
patents,  trademarks,  trade  names or  registered  copyrights  relating  to the
Company's assets.

                      (2) The Company  Disclosure  Schedule  lists all  patents,
patent applications,  trademarks, trade names and registered copyrights owned by
the Company. Except as set forth in the Company Disclosure Schedule, the Company
is not required to pay any royalty,  license fee or similar type of compensation
in connection  with the conduct of its business as it is now or  heretofore  has
been conducted.

                      (3) The Company has obtained  written  agreements from all
required parties and entities assigning to the Company any material  proprietary
rights relating to the Company's assets. Such agreements are currently valid and
in full  force and  effect  and  except as set forth in the  Company  Disclosure
Schedule,  do not  contain any  provisions  or  restrictions  with regard to the
rights  granted to the Buyer  under this  Agreement.  Except as set forth on the
Company  Disclosure  Schedule,  each of the  Company's  employees  and any other
Person  who,  either  alone or in  concert  with  others,  developed,  invented,
discovered,  derived,  programmed, or designed any trade secrets of the Company,
or who have knowledge of or access to information  related to them, have entered
into  appropriate  confidentiality  agreements,  copies of which will,  at least
twenty (20) days prior to the Closing Date, have been provided to the Buyer. All
material trade secrets of the Company are currently protectable and are not part
of the public  knowledge or literature,  nor have they been used,  divulged,  or
appropriated for the benefit of any past or present  employees or other persons,
or to the detriment of, the Company.

                 (k) CUSTOMER  LISTS.  The Company has provided the Buyer access
to a  complete  and  accurate  list  of each of the  material  customers  of the


                                       54
<PAGE>

Company.  The  relationships  between the Company and its active  customers  and
suppliers are, in the aggregate,  in good standing, and since December 31, 1994,
no  material  customer  or  supplier  has  canceled  or  terminated,  or, to the
Knowledge  of the  Company,  threatened  to  cancel,  terminate  or  change  its
relationship with the Company in any manner adverse to the Company.

                  (l) BENEFIT PLANS AND ARRANGEMENTS.

                      (1)  Except  as  set  forth  in  the  Company   Disclosure
Schedule,  or as otherwise  contemplated by this Agreement,  the consummation of
the  Contemplated  Transactions  will not  result  in any  payment  (whether  of
severance  pay or  otherwise)  becoming  due from the  Company to any  employee,
consultant or other third party.

                      (2) The Company  Disclosure  Schedule  lists all  pension,
retirement, stock purchase, stock option, stock bonus, savings or profit sharing
plan, individual employment agreement, bonus or incentive compensation programs,
deferred compensation  agreements,  severance pay plans,  consultant,  bonus, or
group insurance contracts, or any other material incentive,  welfare or employee
benefit  plan,  or  similar  arrangement,  understanding  or course of  dealing,
including  all employee  benefit  plans and employee  pension  benefit  plans as
defined in Section 3(3) of ERISA (the "Employee Plans").

                      (3) With respect to the Employee Plans,  the Company will,
at least  twenty (20) days prior to the Closing  Date,  have  delivered  or made
available to the Buyer copies of any: (1) plans and related trust  documents and
amendments thereto;  (ii) the most recent summary plan descriptions and the most
recent annual report; (iii) annual reports on Form 5500 which were filed in each
of the most recent  three (3) plan years,  including,  without  limitation,  all
schedules  thereto  and all  financial  statements  with  attached  opinions  of
independent  accountants;  (iv) Form PBGC-1  which was filed in each of the most
recent three (3) plan years; (v) the most recent actuarial  valuation;  and (vi)
the most recent  determination  letter  received  from the IRS.  Such  financial
statements  fairly  present the  financial  condition of each  Employee  Plan in
accordance with United States generally accepted  accounting  principles applied
on a consistent  basis. All Employee Plans have been administered in substantial
compliance  with  their  terms,  ERISA  to the  extent  applicable,  and,  where
applicable, Section 401 of the Code.

                      (4) No event of the type set forth in  Section  4043(b) of
ERISA has  occurred  and is  continuing  with  respect to Employee  Plans except
insofar  as such an  event  may  arise as a result  of the  consummation  of the
Contemplated  Transactions or would not have a material  adverse effect upon the
Company's  business,  financial position or operating  results.  There exists no
material  violation of ERISA with  respect to the filing of reports,  documents,
and notices  regarding  the Employee  Plan  participants  or  beneficiaries.  No
action, suit, or proceeding is pending, nor, to the Knowledge of the Company, is
any  threatened  or  imminent,  with  respect to the assets of any of the trusts
under any Employee Plan. All amendments  required to bring an Employee Plan into
conformity,  in all applicable and material respects, with ERISA have been made.
Any bonding with  respect to an Employee  Plan  required  under ERISA is in full
force and effect. To the Knowledge of the Company,  the Company has not incurred
any  liability,  pursuant  to  Subtitle A of Title IV of ERISA,  to the  Pension
Benefit Guaranty Corporation.

                      (5) No breach of  fiduciary  responsibility  has  occurred
with respect to any of the Employee Plans other than such breach,  if any, which
would not have a material  adverse effect on the Company's  business,  financial
position or operating results. There is no suit, litigation or claim (other than


                                       55
<PAGE>

routine benefit claims) pending or, to the Knowledge of the Company,  threatened
against the Company or any fiduciary of any Employee Plan involving any Employee
Plan or against any such plan or its assets by any  employee or former  employee
(or beneficiary  thereof) of the Company which  individually or in the aggregate
would adversely affect the financial condition of any such Employee Plan.

                  (m) Compliance with Laws; Legal Proceedings.

                      (1) The Company is not in violation of, or in default with
respect to, any term or provision of (i) its  Certificate  of  Incorporation  or
Bylaws, or (ii) any judgment, writ, order, injunction, or decree of any court or
of any  federal,  state,  or  municipal  agency  or  authority  in any  case  or
proceeding expressly naming the Company.

                      (2) To the  Knowledge of the Company,  the Company and its
operations are in compliance with applicable statutes, ordinances,  regulations,
requirements   and  orders  of  the  federal   government  and  of  all  states,
municipalities,  and  agencies  thereof,  and of all  other  authorities  having
jurisdiction  in  respect  of any of its  assets or  operations  (including  any
applicable  foreign government or agency or subdivision  thereof),  except where
the failure to do so would not have a material adverse effect on the Company.

                      (3) The Company has not been threatened  with, nor is it a
party to, directly or indirectly, nor, to the Knowledge of the Company, is there
any set of facts  that is likely to give rise to,  any  material  legal  action,
governmental  investigation,  or other  proceeding  (governmental  or  private),
including   investigations,   inquiries,   citations,   complaints,   orders  or
stipulations  by any federal,  state or local agency or  governmental  unit, and
there are no judgments,  orders,  restrictions or decrees of a continuing nature
outstanding against the Company.  The Company has not been threatened with, nor,
to the Knowledge of the Company is there any set of facts that is likely to give
rise to, a charge of any  material  violation  of any  provision of any federal,
state, local or other law (including common law), or administrative  regulations
in respect of its business or property.

                 (n) Contracts and Obligations.  The Company Disclosure Schedule
sets forth a true and complete list of the following  agreements and instruments
to which the Company is a party:  (a) all executory  contracts,  agreements  and
instruments  having  a total  contract  price  in  excess  of  $50,000;  (b) all
contracts,  agreements  or  instruments  which  are in  the  nature  of  teaming
agreements,   joint  venture  agreements,   non-compete  agreements,   franchise
agreements, exclusive license agreements or other similar agreements restricting
access  to any  business  opportunity  of the  Company;  (c)  all  loan  or debt
agreements,  guarantees, indemnities and bonding commitments; (d) all license or
technology transfer agreements;  (e) all leases, subleases and equipment leases,
having a total contract price in excess of $50,000;  (f) all agreements  between
the  Company,  on  the  one  hand,  and  any  of  the  officers,   directors  or
stockholders;  (g) all material agreements between the Company, on the one hand,
and any other  employees  of the  Company on the other  hand;  (h) all  material
licenses or permits issued by any government agency or authority for the benefit
of the  Company  and/or  one  or  more  of the  Company  Subsidiaries;  (i)  any
management or consultation  agreement not terminable at will without  liability;
(j) any contracts or agreements  requiring the payment of fees or commissions in
connection with any sale of all or  substantially  all of the Company's stock or
assets or any sale of a substantial  interest in the Company;  and (k) any other
agreement which materially affects the Company's business, financial position or


                                       56
<PAGE>

operating results or which was entered into other than in the Ordinary Course of
Business (collectively,  the "Material Contracts"). The Company has delivered to
the Buyer  true and  complete  copies  of each of the  Material  Contracts.  The
Company is not in  material  violation  of, or in default  with  respect to, any
Material Contract and the Material Contracts are valid, binding and enforceable,
subject only to applicable  bankruptcy,  insolvency  and similar laws  affecting
creditors  rights  generally  and  subject,  as to  enforceability,  to  general
principles of equity. To the Knowledge of the Company, the relationships between
the Company and the other  parties to each of the Material  Contacts are in good
standing,  and no such other  contract  party has  canceled  or  terminated,  or
threatened to cancel,  terminate or change in any manner  adverse to the Company
such relationship or the terms of any Material Contract.

                 (o) EMPLOYEE RELATIONS.

                      (1) The  Company  has no  union or  collective  bargaining
agreement,  any contract or other agreement with any labor  organization or with
any  employee or  consultant  which is not  terminable  at will by the  Company,
without  liability,  and no such  contract or agreement is under  discussion  by
management of the Company with any employee or consultant.  There are no pending
or threatened (i) strikes,  work  stoppages,  slowdowns or picketing  respecting
employees of the  Company,  (ii) unfair labor  practice  complaints  against the
Company, or (iii) statutes, contracts or agreements,  domestic or foreign, which
will obligate the Company to make any severance payments as a consequence of the
execution  of  this   Agreement  or  the   consummation   of  the   Contemplated
Transactions.

                      (2) The Company has not received  notice that there is any
key employee who intends to leave the Company's employ as a result of, or at the
conclusion of, the Contemplated  Transactions.  The Company's  relationship with
its employees is good.

                 (p)  INSURANCE.  The  properties  and risks of the  Company are
covered by valid and currently  effective  insurance policies issued in favor of
the Company,  which policies are set forth on the Company  Disclosure  Schedule,
and the Company is included as an insured party under such  policies,  with full
rights as loss payee. The Company Disclosure  Schedule contains a list and brief
description  of each  insurance  policy  (copies of which  have been  previously
provided  to the  Buyer)  maintained  with  respect  to  the  Company  (or  such
corporation's  assets or operations),  which provides  continuing coverage as of
the date hereof. The Company Disclosure  Schedule also includes a list and brief
description of individual claims in excess of $10,000 now pending or made during
the 36-month period immediately  preceding the date of this Agreement,  by or on
behalf of the Company under any insurance policies.

                 (q) ENVIRONMENTAL COMPLIANCE.

                      (1) The Company has all  material  permits,  licenses  and
other authorizations  required under applicable laws and regulations relating to
pollution control and protection of the environment  necessary for the operation
of its Facilities.  The Company is not in material violation of any of the terms
or conditions of any such permits, licenses,  leases, or authorizations.  To the
Knowledge  of the  Company,  the  Company  has not  acted  or  failed  to act in
violation of any law or regulation,  order or other  requirement of governmental
authorities  with respect to the  pollution or the  atmosphere,  surface  water,
groundwater  and noise,  the  handling of toxic or hazardous  waste  material or
other  matters  related  to the  environment.  There are no  pending  or, to the
Knowledge  of the  Company,  threatened  civil or criminal  actions,  notices of
violations  or  administrative  proceedings  relating  to  pollution  control or
protection of the environment  that would have a material  adverse effect on the
business or financial condition of the Company.

                                       57
<PAGE>

                      (2) To the Knowledge of the Company, there are no material
conditions,  circumstances,  activities,  practices, incidents, actions or plans
which would be  reasonably  likely to interfere  with or prevent  compliance  or
continued  compliance by the Company with any  environmental  laws  currently in
force  or  with  any  existing  regulation,   code,  order,  decree,   judgment,
injunction,  notice or demand letter  issued,  entered,  promulgated or approved
thereunder,  or which may give rise to any common law or other legal  liability,
including without  limitation,  liability under the Comprehensive  Environmental
Response, Compensation and Liability Act ("CERCLA") or similar state, foreign or
local laws,  or otherwise  form the basis of any claim,  action,  demand,  suit,
proceeding,  hearing, notice of violation,  study or investigation of or against
the Company, based on or related to the manufacture,  processing,  distribution,
use,  treatment,  storage,  disposal,  transport or handling,  or the  emission,
discharge,  release or threatened release into the workplace or the environment,
of any  pollutant,  contaminant,  chemical,  or  industrial,  toxic or hazardous
material,  substance or waste on any properties owned or leased by, or under the
direct control of, the Company.  Without in any way limiting the  foregoing,  no
release, emission or discharge to the environment of any hazardous substance (as
that term is currently  defined under CERCLA or under any  applicable  analogous
state law  ("Hazardous  Substance"))  has occurred or is currently  occurring in
connection  with any action or failure to act on any properties  owned or leased
by, or under the direct  control of, the Company which has or could give rise to
any liability of the Company.

                                       15
<PAGE>

                 (r) ADVANCES; RELATED PARTY TRANSACTIONS

                      (1) There are no  receivables  of the Company owing by any
directors, officers, employees or consultants of the Company or to any affiliate
of any such Company person or entity,  other than advances by the Company in the
ordinary course of business to officers and employees for reimbursable  business
expenses.

                      (2) No stockholder,  officer,  director or employee of the
Company, nor any member of the Family of any such stockholder, officer, director
or employee owns, or since December 31, 1993, has owned, directly or indirectly,
any  interest  exceeding  five percent  (5%) in (a) any  business,  corporate or
other,  which is material party to any material  business  arrangement  with the
Company or (b) any material property or rights, tangible or intangible,  used in
the  business  of the  Company.  No  stockholder,  officer,  or  director of the
Company,  owns,  directly or  indirectly,  any  interest in, or is an officer or
director of, any business,  corporate or other (other than as a stockholder of a
public company), which competes with the Company.

                 (s)  POWERS  OF  ATTORNEY.   The  Company  Disclosure  Schedule
contains a complete  list of all powers of attorney (or similar  instruments  or
authorizations)  granted by the Company to any person or entity. All such powers
of  attorney  (or  similar   instruments  or  authorizations)   are  subject  to
termination  or  revocation  by the Company at any time,  without  notice to any
other person or entity and without penalty.

                 (t) NO BROKERS.  The Company has not entered  into and will not
enter into any contract,  agreement or understanding with any Person, except for
Raymond James & Associates,  Inc. (a copy of which contract has been provided to
Buyer),  which may result in the  obligation  of the Company or the Buyer to pay
any finder's fee, brokerage commission or similar payment in connection with the
Contemplated Transactions.

                 (u) OTHER  AGREEMENTS TO SELL THE COMPANY.  Except as set forth
herein,  the Company has no legal  obligation,  absolute or  contingent,  to any
person or firm to sell any capital stock of the Company or to effect any merger,


                                       58
<PAGE>

consolidation  or other  reorganization,  or disposition of all or substantially
all the assets, of the Company.

                 (v)  BANKING  RELATIONSHIPS.  The Company  Disclosure  Schedule
correctly and completely lists all banks and accounts in such banks,  with which
the Company  has  deposits,  indicating  the names of those  authorized  to sign
documents  with  respect to such  accounts  as of the date of the most  recently
approved banking resolution with respect to each.

                 (w) INFORMATION SUPPLIED.  Neither this Agreement,  the Company
Financial Statements,  the Company Disclosure Schedule, the Exhibits attached to
this Agreement, nor any other certificate, statement or document furnished or to
be  furnished  by the  Company  or the  Sellers  pursuant  to the  terms of this
Agreement,  contains or will  contain any untrue  statement  of a material  fact
known to the  Company  or the  Sellers,  respectively,  or omits or will omit to
state a material fact known by the Company or the Sellers respectively necessary
to make the statements  contained in such information not misleading in light of
the circumstances under which such statements were made.

         7.  REPRESENTATIONS  AND  WARRANTIES OF MANAGEMENT  STAKEHOLDERS.  Each
Management  Stakeholder,  as to himself,  herself or itself only, represents and
warrants,  as of the Date of the Deposit, and except as set forth on the Company
Disclosure Schedule, to the Company and EMCON as follows:

             (a)  OWNERSHIP  OF SHARES AT ISSUE AND OPTIONS AT ISSUE.  Except as
set  forth in the  Company  Disclosure  Schedule,  after  giving  effect  to the
rescission provided for in Section 1 hereof, the Management  Stakeholder owns of
record  and  beneficially  the  number of Shares at Issue and  Options at Issue,
indicated opposite such Management  Stakeholder's name in Exhibit B to the Stock
Purchase  Agreement,  with full right and  authority to exchange  such Shares at
Issue hereunder and to assign such Options at Issue hereunder, and upon delivery
of such Shares at Issue  and/or  Options at Issue  hereunder,  the Company  will
receive good title thereto, free and clear of all mortgages, pledges or security
interests and not subject to any agreements or understandings  among any Persons
with  respect  to the voting or  transfer  of such  securities  other than those
arising under agreements to which Buyer is a party.

             (b)  EXECUTION,   DELIVERY  AND  ENFORCEABILITY  OF  AGREEMENT;  NO
VIOLATION.  This  Agreement has been duly executed and delivered by or on behalf
of the Management  Stakeholder and any other documents  required hereunder to be
executed and delivered by or on behalf of the Management  Stakeholders will have
been duly executed and delivered.  This Agreement  constitutes the legal,  valid
and binding obligation of the Management  Stakeholder,  enforceable against such
Management  Stakeholder in accordance with its terms,  except as enforcement may
be limited by  applicable  bankruptcy,  insolvency,  reorganization,  fraudulent
conveyance,  moratorium or other laws affecting creditor's rights generally. Any
other agreements or documents required hereunder to be executed and delivered by
the Management  Stakeholder  hereunder  constitute the legal,  valid and binding
agreements of the Management Stakeholder executing the same, enforceable against
such Management Stakeholder in accordance with their respective terms, except as
enforcement may be limited by applicable bankruptcy, insolvency, reorganization,
fraudulent  conveyance,  moratorium or other laws  affecting  creditor's  rights
generally.  Neither the execution of this Agreement nor the  consummation of the
transactions  contemplated hereby by the Management Stakeholder will violate, or


                                       59
<PAGE>

constitute a default under, or permit the acceleration of maturity of, except to
the extent waived,  any indentures,  mortgages,  promissory notes,  contracts or
agreements  to which  such  Management  Stakeholder  is a party or by which such
Management Stakeholder or such Management Stakeholder's properties are bound.

             (c)  INFORMATION  SUPPLIED.  To the  Knowledge  of such  Management
Stakeholder,  neither this Agreement,  the Stock Purchase Agreement, the Company
Financial Statements,  the Company Disclosure Schedule, the Exhibits attached to
this Agreement,  or the Stock Purchase  Agreement,  nor any other certificate or
document  furnished  or to  be  furnished  by  the  Company  or  the  Management
Stakeholders  pursuant  to the terms of this  Agreement  or the  Stock  Purchase
Agreement contains or will contain any untrue statement of a material fact known
to the  Management  Stakeholder or the Company,  respectively,  or omits or will
omit to state a material fact necessary to make the statements contained in such
information  not  misleading  in light of the  circumstances  under  which  such
statements were made.

             (d)  RESIDENCE  AND  DOMICILE.  The  Management  Stakeholder  is  a
resident  of, and  domiciled  in, the State  indicated on Exhibit B to the Stock
Purchase Agreement as being the residence of such Management Stakeholder.

             (e) BROKERS OR FINDERS.  Except as set forth in Section 3.20 of the
Stock  Purchase  Agreement,  neither the  Management  Stakeholder or any of such
Management  Stakeholder's  agents have  incurred any  obligation  or  liability,
contingent or otherwise,  for brokerage or finders' fees or agents'  commissions
or other similar payment in connection  with this Agreement or the  transactions
contemplated hereby.

         8.  REPRESENTATIONS  AND  WARRANTIES  OF EMCON.  EMCON  represents  and
warrants to Management  Stakeholders and the Company,  as of the date hereof and
except as set forth in the Buyer Disclosure Schedule, as follows:

             (a)  ORGANIZATION  AND GOOD STANDING.  EMCON is a corporation  duly
organized, validly existing, and in good standing under the laws of the State of
California.

             (b)  EXECUTION,   DELIVERY  AND  ENFORCEABILITY  OF  AGREEMENT;  NO
VIOLATION.  This  Agreement has been duly executed and delivered by or on behalf
of  EMCON,  and any  other  documents  required  hereunder  to be  executed  and
delivered by or on behalf of EMCON will have been duly  executed and  delivered.
This Agreement  constitutes  the legal,  valid and binding  obligation of EMCON,
enforceable  against EMCON in accordance  with its terms,  except as enforcement
may be limited by applicable bankruptcy, insolvency, reorganization,  fraudulent
conveyance,  moratorium or other laws affecting creditor's rights generally. Any
other  agreements  required  hereunder  to be executed  and  delivered  by EMCON
constitute the legal, valid and binding agreements of EMCON, enforceable against
EMCON in accordance  with its respective  terms,  except as  enforcement  may be
limited  by  applicable  bankruptcy,  insolvency,   reorganization,   fraudulent
conveyance,  moratorium or other laws  affecting  creditor's  rights  generally.
Neither the execution of this Agreement nor the consummation of the transactions
provided for herein by EMCON will  violate,  or constitute a default  under,  or
permit  the  acceleration  of  maturity  of,  except to the extent  waived,  any
indentures,  mortgages, promissory notes, contracts or agreements to which EMCON
is a party or by which EMCON or its properties are bound. Except as set forth in
the Buyer Disclosure  Schedule,  EMCON is not and will not be required to obtain
any Consent from any Person in  connection  with the  execution  and delivery of
this Agreement or the  consummation  or  performance of any of the  transactions
contemplated hereby.

                                       60
<PAGE>

             (c) CERTAIN  PROCEEDINGS.  There is no pending  Proceeding that has
been  commenced  against  EMCON  that  challenges,  or may  have the  effect  of
preventing,  delaying, making illegal, or otherwise interfering with, any of the
transactions  contemplated hereby. To EMCON's Knowledge,  no such Proceeding has
been threatened.

             (d)  BROKERS OR  FINDERS.  EMCON and its  officers  and agents have
incurred no obligation or liability,  contingent or otherwise,  for brokerage or
finders' fees or agents' commissions or other similar payment in connection with
this Agreement.

             (e)  INFORMATION  SUPPLIED.  Neither  EMCON's Annual Report on Form
10-K for the fiscal year ending December 31, 1994, nor Quarterly Reports on Form
10-Q for the quarters ending March 31, 1995, June 30, 1995 or September 30, 1995
contains any untrue  statement  of a material  fact or omits to state a material
fact necessary to make the statements  contained therein not misleading in light
of the circumstances under which such statements were made.

             (f) NO MATERIAL CHANGE. Since September 30, 1995, there has been no
material adverse change in EMCON's business, financial position or operations.

         9. GENERAL PROVISIONS.

             (a)  EXPENSES.  Except  as  otherwise  expressly  provided  in this
Agreement,  each party to the  Agreement  will bear his,  her or its  respective
expenses incurred in connection with the preparation, execution, and performance
of this Agreement,  the  transactions  contemplated  hereby and the Contemplated
Transactions,  including  all  fees and  expenses  of  agents,  representatives,
counsel, and accountants.

             (b) CONFIDENTIALITY. Between the date of this Agreement and January
30, 2001,  EMCON and Management  Stakeholders  will maintain in confidence,  and
will cause the directors, officers, employees, agents, and advisors of EMCON and
the Company to maintain in  confidence,  and not use to the detriment of another
party or the  Company  any  written,  oral,  or other  information  obtained  in
confidence  from another party or the Company in connection with this Agreement,
the  transactions   contemplated  hereby,  or  the  Contemplated   Transactions,
expressly  including  the reports of all  consultants  retained  pursuant to the
terms of this  Agreement  and the  Stock  Purchase  Agreement,  unless  (a) such
information  becomes publicly  available through no fault of such party, (b) the
use of such  information  is  necessary or  appropriate  in making any filing or
obtaining  any  consent  or  approval  required  for  the  consummation  of  the
transactions  contemplated hereby or the Contemplated  Transactions,  or (c) the
furnishing or use of such information is required by legal proceedings.

             (c)   NOTICES   All   notices,   consents,   waivers,   and   other
communications  under this  Agreement  must be in writing  and will be deemed to
have been duly given when (a)  delivered by hand (with written  confirmation  of
receipt),  (b)  sent by  telecopier  (with  written  confirmation  of  receipt),
provided  that a copy is mailed  within  three (3) business  days by  registered
mail, return receipt requested, (c) when received by the addressee, if sent by a
nationally  recognized  overnight delivery service (receipt  requested),  or (d)
three (3) business days after being sent by registered or certified mail, return
receipt  requested,  in each case to the  appropriate  addresses and  telecopier
numbers set forth below (or to such other addresses and telecopier  numbers as a
party may designate by notice to the other parties):

                                       61
<PAGE>

      Management Stakeholders:         To each  Management  Stakeholder  at the
                                       address set forth on Exhibit B to the
                                       Stock Purchase Agreement.

      The Company:                     Organic Waste Technologies, Inc.
                                       7550 Lucerne Drive, Suite 110
                                       Cleveland, Ohio  44130
                                       Attn:  Mark H. Shipps, President
                                       Fax No.:  (216) 891-8288

      with a copy to:                  Dale C. LaPorte, Esq.
                                       Calfee, Halter & Griswold
                                       1400 McDonald Investment Center
                                       800 Superior Avenue
                                       Cleveland, Ohio 44114-2688
                                       Fax No.:  (216) 241-0816

      EMCON:                           EMCON
                                       400 S. El Camino Real, Suite 1200
                                       San Mateo, California  94402
                                       Attention:  R. Michael Momboisse, Esq.
                                       Fax No.:  (415) 375-0763

      with a copy to:                  Gray Cary Ware & Freidenrich
                                       400 Hamilton Avenue
                                       Palo Alto, California 94301
                                       Attention:  Eric J. Lapp, Esq.
                                       Fax No.:  (415) 327-3699

             (d)  BINDING  ARBITRATION;  SERVICE OF  PROCESS.  In the event of a
dispute  between the parties  related to or arising out of this  Agreement,  the
Agent and  representatives  of EMCON and the  Company  will meet  promptly in an
effort to resolve the dispute  amicably.  If such  parties  cannot  agree upon a
resolution  within  thirty (30) days of any such party  requesting a meeting for
resolution  of a dispute,  then the matter will promptly be submitted to binding
arbitration in accordance with this Section 13.5.

                 (i) Arbitration will be held in San Francisco,  California,  in
accordance  with  the  rules  and   regulations  of  the  American   Arbitration
Association.  The  number of  arbitrators  will be one and will be  selected  in
accordance  with  the  rules  and   regulations  of  the  American   Arbitration
Association.  The determination of the arbitrator will be conclusive and binding
upon the parties,  and any  determination  by the  arbitrator of an award may be
filed  with  the  clerk  of  a  court  of  competent  jurisdiction  as  a  final
adjudication of the claim involved, or application may be made to such court for
judicial  acceptance of the award and an order of  enforcement,  as the case may
be. Except to the extent otherwise  directed by the arbitrator,  each party will
bear its own expenses, including legal and accounting fees, if any, with respect
to the arbitration,  and one-half of the costs of the arbitrator and of the fees
imposed by the American Arbitration Association.

                 (ii) In any arbitration  hereunder,  the demand for arbitration
shall  specifically  delineate the claims  asserted and the material issues with
respect thereto.  Within thirty (30) days after filing a demand for arbitration,
claimant  shall  provide to  respondent  a list of all fact  witnesses  known to


                                       62
<PAGE>

claimant,  the names and curriculum vitae of each expert witness  anticipated to
be called by claimant, and a copy of relevant documents. Within thirty (30) days
after receipt of the foregoing information, respondent shall provide to claimant
a list of all fact witnesses known to respondent, the names and curriculum vitae
of each expert witness  anticipated  to be called by  respondent,  and a copy of
relevant documents known to respondent. Within ten (10) days after discovery has
been closed by the arbitrator  (but in no event later than sixty (60) days prior
to the arbitration hearing),  claimant shall present to respondent a list of all
fact and expert witnesses anticipated to be called by claimant, a summary of the
substance  of  each  such  witness'  testimony,  and a  list  of  all  documents
anticipated  to be introduced  by claimant (and a copy of such  documents if not
previously provided to respondent). Within thirty (30) days after receipt of the
foregoing  information,  respondent shall present to claimant a list of all fact
and expert  witnesses  anticipated to be called by respondent,  a summary of the
substance  of  each  such  witness'  testimony,  and a  list  of  all  documents
anticipated to be introduced by respondent  (and a copy of such documents if not
previously  provided to claimant).  Any award by the arbitrator shall be subject
to all dollar and other limitations set forth in this Agreement.

                 (iii) A  demand  for  arbitration  may be  served  on  EMCON or
Management  Stakeholders by certified U.S. Mail,  postage  prepaid,  or reliable
overnight delivery service, to the address set forth in Section 13.4 hereof.

             (e)  FURTHER  ASSURANCES.  The  parties  agree (a) to furnish  upon
request to each other such  further  information,  (b) to execute and deliver to
each other such other documents,  and (c) to do such other acts and things,  all
as the other party may  reasonably  request for the purpose of carrying  out the
intent of this Agreement and the documents referred to in this Agreement.

             (f)  WAIVER.  The  rights  and  remedies  of the  parties  to  this
Agreement are cumulative and not alternative.  Neither the failure nor any delay
by any party in exercising any right,  power,  or privilege under this Agreement
or the documents  referred to in this Agreement will operate as a waiver of such
right, power, or privilege, and no single or partial exercise of any such right,
power,  or privilege will preclude any other or further  exercise of such right,
power, or privilege or the exercise of any other right, power, or privilege.  To
the maximum  extent  permitted by applicable  law, (a) no claim or right arising
out of this  Agreement or the  documents  referred to in this  Agreement  can be
discharged by one party, in whole or in part, by a waiver or renunciation of the
claim or right unless in writing  signed by the other party;  (b) no waiver that
may be given by a party will be applicable  except in the specific  instance for
which it is given; and (c) no notice to or demand on one party will be deemed to
be a waiver of any  obligation of such party or of the right of the party giving
such  notice  or  demand  to take  further  action  without  notice or demand as
provided in this Agreement or the documents referred to in this Agreement.

             (g)  ENTIRE  AGREEMENT  AND  MODIFICATION.  Except  as set forth in
Section 1 hereof,  this Agreement  supersedes all prior  agreements  between the
parties  with  respect to its  subject  matter and  constitutes  (along with the
documents  referred to in this Agreement) a complete and exclusive  statement of
the terms of the  agreement  between  the  parties  with  respect to its subject
matter. This Agreement may not be amended except by a written agreement executed
by the party to be charged with the amendment.

             (h)  ASSIGNMENTS,  SUCCESSORS,  AND NO THIRD PARTY  RIGHTS  Neither
party may assign  any of its  rights  under  this  Agreement  without  the prior
consent of the other parties,  which will not be unreasonably  withheld,  except
that EMCON may assign any of its rights under this  Agreement to any  Subsidiary


                                       63
<PAGE>

of EMCON but EMCON will not be relieved of its obligations hereunder as a result
of such assignment. Subject to the preceding sentence, this Agreement will apply
to, be binding in all respects  upon, and inure to the benefit of the successors
and permitted  assigns of the parties.  Nothing expressed or referred to in this
Agreement  will be  construed  to give any Person other than the parties to this
Agreement any legal or equitable right,  remedy,  or claim under or with respect
to this Agreement or any provision of this Agreement.  This Agreement and all of
its  provisions  and  conditions  are for the sole and exclusive  benefit of the
parties to this Agreement and their successors and assigns.

             (i)  SEVERABILITY.  If any  provision  of  this  Agreement  is held
invalid  or  unenforceable  by any court of  competent  jurisdiction,  the other
provisions of this Agreement will remain in full force and effect. Any provision
of this  Agreement  held  invalid or  unenforceable  only in part or degree will
remain in full force and effect to the extent not held invalid or unenforceable.

             (j) SECTION  HEADINGS,  CONSTRUCTION.  The  headings of Sections in
this  Agreement  are  provided  for  convenience  only and will not  affect  its
construction or interpretation.  Unless otherwise  indicated,  all references to
"Sections" refer to the corresponding Sections of this Agreement. All words used
in this  Agreement  will be  construed  to be of such  gender  or  number as the
circumstances require. Unless otherwise expressly provided, the word "including"
does not limit the preceding words or terms.

             (k) INTERPRETATION OF AGREEMENT.  This Agreement has been submitted
to the scrutiny of all parties hereto and their respective  counsel and shall be
given a fair and reasonable  interpretation without consideration being given to
its having been drafted by either party or its counsel.

             (l) TIME OF ESSENCE.  With regard to all dates and time periods set
forth or referred to in this Agreement, time is of the essence.

             (m) GOVERNING LAW. This Agreement will be governed by and construed
under the laws of the State of  Delaware  without  regard to  conflicts  of laws
principles.

             (n)  COUNTERPARTS.  This  Agreement  may be executed in one or more
counterparts,  each of  which  will be  deemed  to be an  original  copy of this
Agreement and all of which,  when taken  together,  will be deemed to constitute
one and the same agreement.

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

EMCON                                      THE COMPANY

EMCON, a California corporation            ORGANIC WASTE TECHNOLOGIES,INC.,
                                           a Delaware corporation

By:      /s/R. Michael Momboisse             By:     /s/Mark H. Shipps
         ---------------------------                 -----------------------
         R. Michael Momboisse                        Mark H. Shipps

Its:     CFO & Vice President Legal          Its:    President
         ---------------------------                 -----------------------

                                       64
<PAGE>


                                               THE MANAGEMENT STAKEHOLDERS

                                             /s/Mark H. Shipps
                                             -------------------------------
                                             MARK H. SHIPPS

                                             /s/Anthony A. Alexander
                                             -------------------------------
                                             ANTHONY A. ALEXANDER

                                             /s/James Helmick
                                             -------------------------------
                                             JAMES HELMICK

                                             /s/Raymond J. Nardelli
                                             -------------------------------
                                             RAYMOND J. NARDELLI

                                             /s/Stephen Lingafelter
                                             -------------------------------
                                             STEPHEN LINGAFELTER

                                             /s/Randall W. Chapman
                                             -------------------------------
                                             RANDALL W. CHAPMAN



                                       65

                                  EXHIBIT 10.19

                               NEW NOTE AGREEMENT


         THIS  AGREEMENT  is  made  effective  as of  the  1st  day of
November,   1996,  by  and  among  EMCON,  a  California   corporation
("EMCON"),  Organic Waste Technologies,  Inc., a Delaware corporation,
("OWT"),  and the  undersigned  holders of common  stock  ("Shares  at
Issue") of OWT and holders of options to purchase  the common stock of
OWT  ("Options  at  Issue")  listed  on  the  signature  pages  hereto
(collectively,    the   holders    thereof   being   the   "Management
Stakeholders").

         WHEREAS,  the  Management  Stakeholders  are  parties to that
certain  Rescission and Reformation  Agreement dated as of November 1,
1996 by and  among the  Management  Stakeholders,  OWT and EMCON  (the
"Rescission Agreement");

         WHEREAS,   pursuant  to  the   Rescission   Agreement,   each
Management  Stakeholder has agreed to the  cancellation of the Options
at Issue held by him in exchange for an unfunded, unsecured promise of
OWT to pay certain  sums,  and the exchange of Shares at Issue held by
him  for a  new  convertible  note  made  by  OWT  (collectively,  the
"Notes");

         WHEREAS, in connection  therewith,  the parties hereto desire
to enter into additional agreements regarding the Notes;

         WHEREAS, EMCON desires to lend each Management Stakeholder an
amount equal to any additional  federal,  state and local income taxes
(the "Tax  Liability")  paid by him as a result of the cancellation of
the  Options in exchange  for an  unfunded,  unsecured  promise to pay
certain  sums and the exchange of the Shares at Issue owned by him for
a Note (the "Loan Amount").

         NOW,  THEREFORE,  in  consideration  of the foregoing and the
agreements  set forth  below,  the  parties  agree  with each other as
follows:

         1. LOAN.  Upon the date on which any  amounts  are  withheld  by OWT or
EMCON for each Management  Stakeholder's  Tax Liability or paid directly by such
Management  Stakeholder to the appropriate taxing authority,  EMCON shall pay to
such  Management  Stakeholder  an  amount  equal  to  such  withholding  or  Tax
Liability,  by cashier's check or wire transfer, and such Management Stakeholder
shall execute a note in the principal amount of the Loan Amount,  in the form of
Exhibit A hereto (the "Loan Note").

         2. (a)  EXCHANGE  RIGHT.  In the event that the Note or the Option Base
Amount (as defined in the Rescission  Agreement) has not been converted into OWT
Common Stock in accordance with its terms prior to the fifth  anniversary of the
date hereof,  each Management  Stakeholder shall have the right, for a period of
ninety (90) days prior to the fifth  anniversary of the date hereof, to exchange
the Note payable to him for fully paid and nonassessable shares of Common Stock,
no par value,  of EMCON as such stock exists on the date of issuance of the Note
payable  to him and the  date of the  Rescission  Agreement,  or any  shares  of


                                       66
<PAGE>

capital  stock of EMCON  into which such  stock  shall  hereafter  be changed or
reclassified  (the "EMCON  Common  Stock") at the exchange  price  determined as
provided  herein (the "EMCON Exchange  Price").  Upon the surrender of the Note,
accompanied  by a Notice of Exchange of  Convertible  Note in the form  attached
hereto as  Exhibit B with  respect to both the amount due under the Note and the
Option Base  Amount,  properly  completed  and duly  executed by the  Management
Stakeholder (an "Exchange Notice"), EMCON shall issue and deliver to or upon the
order of the Management  Stakeholder that number of shares of EMCON Common Stock
for which the sum of the  Principal (as defined in the Note) and the Option Base
Amount shall be  exchanged,  as determined  in  accordance  herewith.  Upon such
exchange,  any accrued but unpaid interest on the Notes shall be immediately due
and payable.

         The number of shares of EMCON Common Stock to be issued upon conversion
of each Note and Option Base Amount shall be  determined  by dividing the sum of
the  Principal  of such  Note and the  Option  Base  Amount  of such  Management
Stakeholder  by the EMCON  Exchange  Price in  effect  on the date the  Exchange
Notice is delivered to EMCON by the Management Stakeholder.

             (b) EXCHANGE  PRICE.  The EMCON Exchange  Price shall  initially be
$6.50.

                 (i) SUBDIVISIONS. In case EMCON shall at any time subdivide the
outstanding  shares of EMCON Common Stock,  the EMCON  Exchange  Price in effect
immediately prior to such subdivision shall be proportionately decreased, and in
case the  Company  shall at any time  combine  the  outstanding  shares of EMCON
Common Stock, the Exchange Price in effect immediately prior to such combination
shall be  proportionately  increased,  effective at the close of business on the
date of such subdivision or combination, as the case may be.

                 (ii) STOCK  DIVIDENDS.  In case  EMCON  shall at any time pay a
dividend with respect to EMCON Common Stock payable in EMCON Common Stock,  then
the EMCON  Exchange  Price in effect  immediately  prior to the record  date for
distribution  of such  dividend  shall be adjusted to that price  determined  by
multiplying the EMCON Exchange Price in effect  immediately prior to such record
date by a  fraction  (i) the  numerator  of which  shall be the total  number of
shares of Common Stock  outstanding  immediately prior to such dividend and (ii)
the  denominator  of which shall be the total  number of shares of EMCON  Common
Stock outstanding immediately after such dividend.

                 (iii)    RECLASSIFICATION   OR   MERGER.   In   case   of   any
reclassification,  change or conversion of the EMCON Common Stock (other than as
a result of a subdivision or combination described above and other than upon any
Acceleration  Event, as defined below),  each Management  Stakeholder shall have
the right to receive, upon exchange of the Note owned by him and satisfaction of
the  promise  to pay the  Option  Base  Amount  the kind and amount of shares of
stock,   other   securities,   money   and   property   receivable   upon   such
reclassification,  change or  conversion  by a holder of the number of shares of
EMCON Common Stock the number of EMCON Common Shares into which his Note and his
respecting  Option Base Amount could then be exchanged.  The  provisions of this
subparagraph  (iii)  shall  similarly  apply  to  successive  reclassifications,
changes, and conversions.

             (c) AUTHORIZED  SHARES.  EMCON covenants that during the period the
exchange  right set forth in this Section 2 exists,  EMCON will reserve from the
authorized  and unissued  EMCON  Common  Stock a sufficient  number of shares to
provide for the  issuance of EMCON  Common  Stock upon the full  exchange of the
Notes and the Option Base Amounts.  EMCON  represents  that upon issuance,  such
shares will be duly and validly issued, fully paid and non-assessable.

                                       67
<PAGE>

             (d) METHOD OF EXCHANGE. Except as otherwise provided in the Note or
the Rescission Agreement, or agreed by the Management Stakeholder, the Note held
by him and his respective  Option Base Amount may be exchanged by the Management
Stakeholder  in whole by (i)  submitting  to EMCON an  Exchange  Notice and (ii)
surrendering the Note held by him at the principal office of EMCON.

             (e) RESTRICTIONS  CONCERNING THE SHARES. The shares of EMCON Common
Stock to be held by  Management  Stakeholders  pursuant  to the  exercise of the
exchange  rights  set forth in Section 2 may not be sold or  transferred  unless
either (i) such shares first shall have been registered under the Securities Act
of 1933 (the "Act") and  applicable  state  securities  laws or (ii) EMCON shall
have been  furnished  with an opinion of legal  counsel to the effect  that such
sale or transfer is exempt from the registration requirements of the Act and all
applicable  state  securities  laws. Each certificate for shares of EMCON Common
Stock to be held by the Management Stakeholders that have not been so registered
and that have not been sold pursuant to an exemption that permits removal of the
legend, shall bear a legend substantially in the following form, as appropriate:

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THE
          SECURITIES  HAVE BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE
          SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF AN EFFECTIVE
          REGISTRATION   STATEMENT  FOR  THE   SECURITIES   UNDER  THE
          SECURITIES ACT OF 1933, AS AMENDED, OR AN OPINION OF COUNSEL
          THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT.

Upon the request a  Management  Stakeholder,  EMCON shall  remove the  foregoing
legend from the  certificate  representing  the EMCON  Common Stock held by such
Management  Stakeholder upon exercise of the exchange rights pursuant to Section
2 or issue to such Management Stakeholder a new certificate therefor free of any
transfer legend, if, with such request,  EMCON shall have received either (i) an
opinion of counsel to the effect that any such  legend may be removed  from such
certificate, or (ii) if the present paragraph (k) of Rule 144 or a substantially
similar successor rule remains in force and effect, satisfactory representations
from the Management  Stakeholder  that such Management  Stakeholder is not then,
and has not been during the preceding  three (3) months,  an affiliate of EMCON,
and that a period of at least three (3) years has elapsed since the later of the
date the securities  were acquired (as determined  under Rule 144) from EMCON or
an affiliate of EMCON.

             (f)  ACCELERATION OF EXCHANGE RIGHTS.  Notwithstanding  anything to
the contrary herein,  in the event that any of the following events set forth in
paragraphs (i) through (v) of this Section 2(f) (each, an "Acceleration  Event")
shall occur,  then the exchange  rights set forth in Section 2(a) shall,  at the
option of each Management Stakeholder, be immediately exercisable:

                 (i) by any  Management  Stakeholder  upon  a  consolidation  or
merger of EMCON with or into any other corporation or corporations (other than a
wholly-owned  subsidiary  of EMCON and other than a merger in which EMCON is the
surviving  corporation),  or the sale,  transfer or other  disposition of all or
substantially all of the assets of EMCON;

                                       68
<PAGE>

                 (ii) by any Management Stakeholder,  upon a change in ownership
of Fifty Percent (50%) or more,  in a single  transaction,  of the stock of OWT,
other than to an  affiliate  or  affiliates  of EMCON which does not  materially
alter EMCON's direct or indirect ownership of OWT;

                 (iii) by any Management Stakeholder, upon a change in ownership
of Fifty Percent (50%) or more, in a series of two (2) or more transactions,  of
the  outstanding  stock of OWT,  other than to an affiliate or affiliates of OWT
and a  substantial  diminution  in the  responsibilities  of Mark H. Shipps with
respect to OWT in his capacity as an employee of EMCON;

                 (iv) (A) upon a change  in  ownership  of  Thirty-Five  Percent
(35%) or more of the stock of EMCON to a single buyer or an affiliated  group of
buyers, resulting in a change in the majority of the board of directors of EMCON
from the board of  directors as it existed  immediately  prior to such change in
ownership,  or (B) upon a change in ownership of Fifty Percent (50%) or more, in
a single transaction, of the stock of EMCON;

                 (v)  by  any  Management  Stakeholder,  upon  the  liquidation,
dissolution or winding up of OWT or the  consolidation or merger of OWT with and
into  another  corporation  (other  than a merger in which OWT is the  surviving
corporation);

                 (vi) by any Management Stakeholder,  upon the occurrence of any
transaction,  without the consent of Mark H.  Shipps,  in which  Twenty  Percent
(20%) or more of the  outstanding  common stock of OWT becomes  owned by persons
other than EMCON or an affiliate or affiliates of EMCON;

                 (vii)  by any  Management  Stakeholder  upon  his  death or the
termination  of his  employment by OWT other than a Termination  for Cause,  the
"Termination  for  Cause"  is  intended  to  embrace  intentionally  or  grossly
negligent  conduct on the part of the Maker which is materially  detrimental  to
the operations  and/or  reputation of OWT or the Holder.  By way of illustration
such actions  would  include (but would not be limited to) a material  breach of
Maker's  obligations  under any employment  agreement  between the Maker and OWT
and/or the Holder,  and/or  conviction of a crime (other than minor  infractions
such as parking or similar traffic  violations),  moral turpitude and revocation
by the applicable licensing authority of professional licenses (if any) material
to the Maker's ability to perform the Maker's employment obligations; or

                 (viii) by any Management  Stakeholder upon a fundamental change
in EMCON's current strategy of focussing a material amount of EMCON's  resources
on services  relating  to the design,  construction,  ownership,  operation  and
maintenance of infrastructure.

         3. REQUEST FOR REGISTRATION.

             (a) Upon the receipt by EMCON of Exchange  Notices from  Management
Stakeholders  holding Notes, the aggregate  Principal of which together with the
Option Base Amounts owed to such Management  Stakeholders,  may be exchanged for
EMCON Common Stock with an aggregate value, based on the closing price of the


                                       69
<PAGE>

EMCON Common Stock on the principal  market on which such stock is traded on the
date of such Exchange Notices, $1,000,000 or more, EMCON will:

                 (i) promptly file a registration  statement with the Securities
and Exchange  Commission (the  "Commission") and effect all such  registrations,
qualifications and compliances (including,  without limitation, the execution of
an undertaking to file  post-effective  amendments,  appropriate  qualifications
under the applicable  blue sky or other state  securities  laws and  appropriate
compliance with exemptive  regulations  issued under the Securities Act of 1933,
as amended (the "Securities  Act"), and any other  governmental  requirements or
regulations)  as would permit or facilitate the sale and  distribution of all of
the EMCON  Common  Stock  issuable  upon the full  exchange  of the Notes by the
Management  Stakeholders  and the  cancellation  of (the  "Management  Shares");
provided,   however,   that  EMCON  shall  not  be   obligated  to  effect  such
registration, qualification or compliance pursuant to this Section 3(a)(i)(A) in
any  particular  jurisdiction  in which  EMCON  would be  required  to execute a
general consent to service of process unless EMCON is already subject to service
in such  jurisdiction and except as required by the Securities Act and (B) after
EMCON has already effected one such registration, qualification or compliance;

                 (ii) promptly give notice to all Management Stakeholders of the
expected registration of the Management Shares;

                 (iii) use its best  efforts  to cause such  registration  to be
declared effective by the Commission;

                 (iv) keep such registration statement effective for a period of
one year or until the Management  Stakeholders  have completed the  distribution
described in the registration statement, whichever first occurs;

                 (v) prepare and file with the  Commission  such  amendments and
supplements to such registration statement and the prospectus used in connection
with  such  registration  statement  as may be  necessary  to  comply  with  the
provisions  of  the  Securities  Act  with  respect  to the  disposition  of all
securities offered by such registration statement;

                 (vi) furnish such number of  prospectuses  and other  documents
incident thereto, including any amendment of or supplement to the prospectus, as
a Management Stakeholder from time to time may reasonably request;

                 (vii) notify each Management  Stakeholder  selling EMCON Common
Stock  covered  by such  registration  statement  at any time when a  prospectus
relating  thereto is required to be delivered  under the  Securities  Act of the
happening  of any  event as a result of which the  prospectus  included  in such
registration  statement,  as then in effect,  includes an untrue  statement of a
material fact or omits to state a material fact required to be stated therein or
necessary to make the  statements  therein not  misleading  or incomplete in the
light  of the  circumstances  then  existing,  and at the  request  of any  such
Management  Stakeholder,  prepare and furnish to such  Management  Stakeholder a
reasonable  number  of  copies  of a  supplement  to or  an  amendment  of  such
prospectus  as  may  be  necessary  so  that,  as  thereafter  delivered  to the
purchasers of such shares, such prospectus shall not include an untrue statement
of a  material  fact or omit to state a  material  fact  required  to be  stated
therein or necessary to make the statements therein not misleading or incomplete
in the light of the circumstances then existing;

                                       70
<PAGE>

                 (viii) cause all such EMCON Common  Stock  registered  pursuant
hereunder to be listed on each  securities  exchange,  if any, on which  similar
securities issued by EMCON are then listed;

                 (ix)  otherwise  use  its  best  efforts  to  comply  with  all
applicable rules and regulations of the Commission; and

                 (x) in connection with any underwritten  offering pursuant to a
registration   statement   filed  pursuant  to  this  Section,   enter  into  an
underwriting  agreement  reasonably  necessary  to effect  the offer and sale of
EMCON Common Stock,  provided such  underwriting  agreement  contains  customary
underwriting provisions and provided further that if the underwriter so requests
the underwriting agreement will contain customary contribution provisions.

             (b)  During the  period  that  EMCON's  registration  statement  is
effective  pursuant to this Section 3, the Management  Stakeholders shall comply
with all applicable EMCON policies  regarding  trading of securities by insiders
and members of management, including the observance of "window period" and other
restrictions.

         4. EMCON REGISTRATION.

             (a) If, at any time after the registration  statement  described in
Section 3 is no longer  effective,  EMCON shall determine to register any of its
securities  either for its own  account or the  account of a security  holder or
holders, other than a registration relating solely to employee benefit plans, or
a registration  relating solely to a Rule 145 transaction,  or a registration on
any registration form that does not permit secondary sales, EMCON will:

                 (i) promptly give to each Management Stakeholder written notice
thereof;

                 (ii) use its best efforts to include in such  registration (and
any related  qualification  under blue sky laws or other compliance),  except as
set forth in Section 4(b) below, and in any underwriting  involved therein,  all
the Management  Shares  specified in a written request or requests,  made by any
Management  Stakeholder  and received by EMCON within twenty (20) days after the
written  notice from EMCON  described in clause (i) above is mailed or delivered
by  EMCON.  Such  written  request  may  specify  all or a part of a  Management
Stakeholder's Management Shares;

                 (iii) furnish such number of  prospectuses  and other documents
incident thereto, including any amendment of or supplement to the prospectus, as
a Management Stakeholder from time to time may reasonably request;

                 (iv)  cause all such EMCON  Common  Stock  registered  pursuant
hereunder to be listed on each securities  exchange on which similar  securities
issued by EMCON are then listed; and

                 (v)   otherwise  use  its  best  efforts  to  comply  with  all
applicable rules and regulations of the Commission.

                                       71
<PAGE>

             (b) If the  registration  of  which  EMCON  gives  notice  is for a
registered public offering involving an underwriting,  EMCON shall so advise the
Management  Stakeholders  as a part of the  written  notice  given  pursuant  to
Section  4(a)(i).  In such event,  the right of any  Management  Stakeholder  to
registration  pursuant  to  this  Section  4  shall  be  conditioned  upon  such
Management Stakeholder's participation in such underwriting and the inclusion of
such  Management  Stakeholder's  Management  Shares in the  underwriting  to the
extent  provided  herein.  All Management  Stakeholders  proposing to distribute
their securities  through such  underwriting  shall (together with EMCON and the
other  holders of securities of EMCON with  registration  rights to  participate
therein  distributing their securities through such underwriting)  enter into an
underwriting  agreement  in  customary  form  with  the  representative  of  the
underwriter or underwriters selected by EMCON.

             (c)  Notwithstanding  any other provision of this Section 4, if the
representative  of the  underwriters  advises  EMCON in writing  that  marketing
factors  require a limitation  on the number of shares to be  underwritten,  the
representative  may (subject to the limitations set forth below) exclude all the
Management Stakeholders from, or limit the number of the Management Shares to be
included  in,  the  registration  and  underwriting.  EMCON  shall so advise the
Management  Stakeholders  and all other holders of EMCON  securities (the "Other
Shares")  requesting  registration and the number of Management Shares and Other
Shares that may be included shall be allocated among the Management Stakeholders
and other selling  stockholders  requesting  inclusion of shares pro rata on the
basis of the number of Management  Shares and Other Shares that are requested to
be registered.

             (d) EMCON's obligations  pursuant to this Section 4 shall expire as
to each Management  Stakeholder at such time as such Management  Stakeholder may
sell all shares of EMCON Common Stock issued upon  exchange for such  Management
Stakeholder's Note during any successive two quarter period pursuant to Rule 144
under the Securities Act.

         5. EXPENSES OF REGISTRATIOn.  All Registration Expenses (as hereinafter
defined)  incurred  in  connection  with  any  registration,   qualification  or
compliance  pursuant  to  Section 3 and 4 hereof  shall be borne by  EMCON.  All
Selling Expenses (as hereinafter  defined)  relating to securities so registered
shall be borne by the Management Stakeholders who own such Management Shares pro
rata on the basis of the  number of  Management  Shares so  registered  on their
behalf.  For purposes of this Section 5,  Registration  Expenses  shall mean all
expenses  incurred in effecting  any  registration  pursuant to this  Agreement,
including, without limitation, all registration, qualification, and filing fees,
printing  expenses,  escrow fees, fees and  disbursements  of counsel for EMCON,
blue sky fees and  expenses,  and  expenses  of any  regular or  special  audits
incident to or required by any such registration,  but shall not include Selling
Expenses and fees and disbursements of counsel for the Management  Stakeholders.
For  purposes of this Section 5. Selling  Expenses  shall mean all  underwriting
discounts  and  selling  commissions  applicable  to the sale of the  Management
Shares and fees and  disbursements  of counsel  for any  Management  Stakeholder
(other  than the fees and  disbursements  of counsel  included  in  Registration
Expenses).

         6. INDEMNIFICATION.

             (a) EMCON will indemnify each Management  Stakeholder  with respect
to which registration,  qualification,  or compliance has been effected pursuant
to this Agreement,  and each  underwriter,  if any, and each person who controls
within the meaning of Section 15 of the Securities Act, any underwriter, against
all expenses, claims, losses, damages, and liabilities (or actions, proceedings,


                                       72
<PAGE>

             or settlements in respect  thereof)  arising out of or based on any
untrue  statement (or alleged untrue  statement) of a material fact contained in
any  prospectus  offering  circular,  or other  document  (including any related
registration  statement,  notification,  or  the  like)  incident  to  any  such
registration, qualification, or compliance, or based on any omission (or alleged
omission)  to state  therein a material  fact  required to be stated  therein or
necessary to make the  statements  therein not  misleading,  or any violation by
EMCON of the Securities Act or any rule or regulation  thereunder  applicable to
EMCON and relating to action or inaction  required of EMCON in  connection  with
any such  registration,  qualification,  or compliance,  and will reimburse each
such Management Stakeholder, each such underwriter, and each person who controls
any such underwriter,  for any legal and any other expenses  reasonably incurred
in connection with investigating and defending or settling any such claim, loss,
damage,  liability or action, provided that EMCON will not be liable in any such
case to the extent  that any such claim,  loss,  damage,  liability,  or expense
arises out of or is based on any untrue statement or omission based upon written
information furnished to EMCON by such Management Stakeholder or underwriter and
stated to be  specifically  for use  therein.  It is agreed  that the  indemnity
agreement  contained  in this  Section  6 shall  not  apply to  amounts  paid in
settlement  of any such  loss,  claim,  damage,  liability,  or  action  if such
settlement is effected  without the consent of EMCON (which consent has not been
unreasonably withheld).

             (b) Each Management  Stakeholder will, if Management Shares held by
him or her  are  included  in the  securities  as to  which  such  registration,
qualification,  or compliance is being effected,  indemnify  EMCON,  each of its
directors,   officers,   partners,  legal  counsel,  and  accountants  and  each
underwriter,  if any,  of  EMCON's  securities  covered  by such a  registration
statement, each person who controls EMCON or such underwriter within the meaning
of Section 15 of the  Securities  Act,  and each  other  Management  Stakeholder
against  all claims,  losses,  damages  any  liabilities  (or actions in respect
thereof)  arising out of or based on any untrue  statement  (or  alleged  untrue
statement)  of a material  fact  contained in any such  registration  statement,
prospectus,  offering circular,  or other document,  or any omission (or alleged
omission)  to state  therein a material  fact  required to be stated  therein or
necessary to make the  statements  therein not  misleading,  and will  reimburse
EMCON and such Management  Stakeholders,  directors,  officers,  partners, legal
counsel, and accountants, persons, underwriters or control persons for any legal
or any other expenses  reasonably  incurred in connection with  investigating or
defending any such claim,  loss, damage,  liability,  or action, in each case to
the extent,  but only to the  extent,  that such  untrue  statement  (or alleged
untrue statement) or omission (or alleged omission) is made in such registration
statement, prospectus, offering circular, or other document in reliance upon and
in conformity  with written  information  furnished to EMCON by such  Management
Stakeholder and stated to be  specifically  for use therein  provided,  however,
that the obligations of such Management Stakeholder hereunder shall not apply to
amounts paid in settlement of any such claims,  losses,  damages, or liabilities
(or actions in respect  thereof)  if such  settlement  is  effected  without the
consent of such Management  Stakeholder (which consent shall not be unreasonably
withheld).

             (c) Each party  entitled to  indemnification  under this  Section 6
(the  "Indemnified  Party")  shall give notice to the party  required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit  the  Indemnifying  Party to  assume  the  defense  of such  claim or any
litigation  resulting  therefrom,  provided  that  counsel for the  Indemnifying
Party,  who shall conduct the defense of such claim or any litigation  resulting
therefrom,  shall be approved by the Indemnified Party (whose approval shall not
unreasonably  be withheld),  and the  Indemnified  Party may participate in such
defense at such party's  expense,  and provided  further that the failure of any


                                       73
<PAGE>

Indemnified  Party to give  notice as  provided  herein  shall not  relieve  the
Indemnifying  Party of its obligations under this Agreement,  to the extent such
failure is not  prejudicial.  No Indemnifying  Party, in the defense of any such
claim or litigation,  shall,  except with the consent of each Indemnified Party,
consent  to entry of any  judgment  or enter into any  settlement  that does not
include as an unconditional term thereof the giving by the claimant or plaintiff
to such  Indemnified  Party of a release from all liability with respect to such
claim or  litigation.  Each  Indemnified  Party shall  furnish such  information
regarding  itself  or  the  claim  in  question  as an  Indemnifying  Party  may
reasonably request in writing and as shall be reasonably  required in connection
with defense of such claim and litigation resulting therefrom.

             (d) If the  Indemnification  provided for in this Section 6 is held
by a court of competent  jurisdiction to be unavailable to an Indemnified  Party
with  respect to any loss,  liability,  claim,  damage,  or expense  referred to
therein,  then the Indemnifying  Party, in lieu of indemnifying such Indemnified
Party  hereunder,  shall  contribute  to the  amount  paid  or  payable  by such
Indemnified Party as a result of such loss, liability, claim, damage, or expense
in such  proportion  as is  appropriate  to reflect  the  relative  fault of the
Indemnifying  Party on the one hand and of the Indemnified Party on the other in
connection  with  the  statements  or  omissions  that  resulted  in such  loss,
liability,  claim,  damage, or expenses as well as any other relevant  equitable
considerations.  The  relative  fault  of  the  Indemnifying  Party  and  of the
Indemnified  Party shall be  determined  by reference  to,  among other  things,
whether  the  untrue or  alleged  untrue  statement  of a  material  fact or the
omission  to state a  material  fact  relates  to  information  supplied  by the
Indemnifying Party or by the Indemnified Party and the parties' relative intent,
knowledge,  access to  information,  and  opportunity to correct or prevent such
statement or omission.

             (e)  Notwithstanding   the  foregoing,   to  the  extent  that  the
provisions on  indemnification  and  contribution  contained in the underwriting
agreement  entered into in connection with the underwritten  public offering are
in conflict with the  foregoing  provisions,  the provision in the  underwriting
agreement shall control.

         7. RULE 144 REPORTING.  With a view to making available the benefits of
certain  rules and  regulations  of the  Commission  that may permit the sale of
restricted  securities to the public without  registration,  EMCON agrees to use
its best efforts to:

             (a) Make and keep public  information  regarding EMCON available as
those terms are understood and defined in Rule 144 under the Securities Act;

             (b) File with the  Commission  in a timely  manner all  reports and
other  documents  required of EMCON under the  Securities Act and the Securities
Exchange Act of 1934, as amended; and

             (c)  So  long  as a  Management  Stakeholder  owns  any  restricted
securities, furnish to the Management Stakeholder forthwith upon written request
a  written   statement  by  EMCON  as  to  its  compliance  with  the  reporting
requirements of Rule 144; and of the Securities Act and the Exchange Act.

         8. OWT'S REGISTRATION RIGHTS  OBLIGATIONS.  In the event that OWT shall
be  required  to  register  shares of its stock  pursuant  to Section 2.3 of the
Notes, then the provisions of Sections 4 to 7 hereof shall apply with respect to
such registration.

                                       74
<PAGE>

         9. MISCELLANEOUS.

             (a)   NOTICES.   All   notices,   consents,   waivers,   and  other
communications  under this  Agreement  must be in writing  and will be deemed to
have been duly given when (a)  delivered by hand (with written  confirmation  of
receipt),  (b)  sent by  telecopier  (with  written  confirmation  of  receipt),
provided  that a copy is mailed  within  three (3) business  days by  registered
mail, return receipt requested, (c) when received by the addressee, if sent by a
nationally  recognized  overnight delivery service (receipt  requested),  or (d)
three (3) business days after being sent by registered or certified mail, return
receipt  requested,  in each case to the  appropriate  addresses and  telecopier
numbers set forth below (or to such other addresses and telecopier  numbers as a
party may designate by notice to the other parties):

        Management Stakeholders:     To each  Management  Stakeholder  at the
                                     address set forth on Schedule 1

        EMCON:                       EMCON
                                     400 S. El Camino Real, Suite 1200
                                     San Mateo, California  94402
                                     Attention:  R. Michael Momboisse, Esq.
                                     Fax No.:  (415) 375-0763

             (b)  ENTIRE  AGREEMENT.   This  Agreement  constitutes  the  entire
agreement of the parties with respect to the matters  contemplated  herein. This
Agreement  supersedes any and all prior  understandings as to the subject matter
of this Agreement.

             (c)  AMENDMENTS,  WAIVERS  AND  CONSENTS.  Any  provision  in  this
Agreement  to the  contrary  notwithstanding,  changes in or  additions  to this
Agreement may be made, and compliance with any covenant or provision  herein set
forth  may  be  omitted  or  waived,  if  agreed  to  by  EMCON  and  Management
Stakeholders  holding Notes representing in aggregate in excess of Fifty Percent
(50%) of the aggregate amount due under all of the Notes.

             (d) BINDING  EFFECT;  ASSIGNMENT.  This Agreement  shall be binding
upon and inure to the benefit of the personal  representatives and successors of
the respective parties hereto, except that no Management  Stakeholder shall have
the  right to  assign  its  rights  hereunder  or any  interest  herein  without
obtaining the prior written  consent of EMCON.  Notwithstanding  the  foregoing,
each Management Stakeholder may assign his rights hereunder

                 (i)  to  his  spouse,   parents,   grandparents,   children  or
grandchildren or other family members (including relatives by marriage), or to a
custodian, trustee or other fiduciary for his account or the account of a member
of his family, or

                 (ii) by way of bequest or inheritance upon death.

             (e) GENERAL.  The  headings  contained  in this  Agreement  are for
reference  purposes  only  and  shall  not in any  way  affect  the  meaning  or
interpretation  of this Agreement.  In this Agreement the singular  includes the
plural, the plural the singular.

             (f) SEVERABILITY. If any provision of this Agreement shall be found
by any court of  competent  jurisdiction  to be  invalid or  unenforceable,  the
parties hereby waive such provision to the extent that it is found to be invalid


                                       75
<PAGE>

or unenforceable.  Such provision shall, to the maximum extent allowable by law,
be modified  by such court so that it becomes  enforceable,  and,  as  modified,
shall be enforced as any other provision hereof, all the other provisions hereof
continuing in full force and effect.

             (g)  COUNTERPARTS.  This Agreement may be execute in  counterparts,
all of which together shall constitute one and the same instrument.

             (h) GOVERNING LAW. This Agreement shall be governed by the internal
laws of the State of Delaware  without  regard to the  principles of conflict of
laws.

                                       76
<PAGE>


         IN WITNESS WHEREOF, the parties have caused this Agreement to
be duly executed as of the date first written above.

                       EMCON
                       /s/ R. Michael Momboisse
                       ----------------------------------
                       By: R. MICHAEL MOMBOISSE
                       Title:    CFO and VP Legal

                       ORGANIC WASTE TECHNOLOGIES, INC.
                       /s/ Anthony A. Alexander
                       ----------------------------------
                       By: ANTHONY A. ALEXANDER
                       Title:    Secretary

                       MANAGEMENT STAKEHOLDERS
  
                       /s/Mark H. Shipps
                       ----------------------------------
                       MARK H. SHIPPS

                       /s/Anthony A. Alexander
                       ----------------------------------
                       ANTHONY A. ALEXANDER

                       /s/James Helmick
                       ----------------------------------
                       JAMES HELMICK

                       /s/Raymond J. Nardelli
                       ----------------------------------
                       RAYMOND J. NARDELLI

                       /s/Stephen Lingafelter
                       ----------------------------------
                       STEPHEN LINGAFELTER

                       /s/Randall W. Chapman
                       ----------------------------------
                       RANDALL W. CHAPMAN



                                       77


                                  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.



                                       78
<PAGE>

         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");

                                       79
<PAGE>


             (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


                                       80
<PAGE>

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.

                                       81
<PAGE>

             (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


                                       82
<PAGE>

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.

                                       83
<PAGE>

                 (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.

                                       84
<PAGE>

                 (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
<PAGE>

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


                                       86
<PAGE>

(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


                                       87
<PAGE>

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


                                       88
<PAGE>

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


                                       89
<PAGE>

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


                                       90
<PAGE>

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
<PAGE>

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):

                                       92
<PAGE>

             (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
<PAGE>

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
<PAGE>

                 (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
<PAGE>

             (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
<PAGE>

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
<PAGE>

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
<PAGE>

             (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
<PAGE>

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
<PAGE>

             (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
<PAGE>

                 (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
<PAGE>

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
<PAGE>

                 (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
<PAGE>

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
<PAGE>

                 (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
<PAGE>

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
<PAGE>

             (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
<PAGE>

         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
<PAGE>

         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

                                  EXHIBIT 10.21

                          AMENDMENT TO CREDIT AGREEMENT

THIS SECOND  AMENDMENT  ("Amendment")  is made  effective  as of the 17th day of
January,  1997, by and between EMCON  ("Borrower") and Union Bank of California,
N.A. ("Bank").

                                    RECITALS

A.             Borrower is currently  indebted to Bank pursuant to the terms and
               conditions of that certain  Credit  Agreement  dated February 29,
               1996 and amended on September 13, 1996 (the "Agreement");

B.             Borrower  and Bank have agreed to amend the  Agreement to reflect
               certain changes in the terms and conditions set forth therein.

C.             All  references  to the  "Prime  Rate" in all the Loan  Documents
               shall  be  deemed  to be  references  to  the  "Reference  Rate".
               "Reference  Rate" shall mean the rate announced by Bank from time
               to time at its corporate  headquarters as its Reference Rate. The
               Reference  Rate is an index rate  determined by Bank from time to
               time as a means of pricing  certain  extensions  of credit and is
               neither  directly  tied to any external rate of interest or index
               nor  necessarily  the lowest rate of interest  charged by Bank at
               any given time.

NOW, THEREFORE, the parties hereto agree as follows:

1.             Section  5.2(b) of the Agreement  the amount  Forty-One
               Million Dollars ($41,000,000) is deleted and the amount
               Thirty Six Million Dollars ($36,000,000) is substituted
               therefore.

2.             Section  6.8 of the  Agreement  the amount Six  Million
               Dollars  ($6,000,000)  is deleted and the amount  Three
               Million Five Hundred Thousand  Dollars  ($3,500,000) is
               substituted therefore.

3.             Upon the sale of Columbia  Analytical  Services,  Inc.,
               under the  terms of that  Agreement  between  EMCON and
               Columbia Analytical  Services,  Inc., EMCON will reduce
               the outstanding term loan with the Bank by $3,000,000.

                          GENERAL AMENDMENT PROVISIONS

A. Except as specifically provided herein, all terms and conditions of
the  Agreement  remain in full  force and  effect,  without  waiver or
modification.  All terms defined in the Agreement  shall have the same
meaning  when  used in this  Amendment,  and  this  Amendment  and the
Agreement shall be read together as one document. Where any provisions
of the Agreement amended by this Amendment appear in a promissory note
tied to the Agreement,  the same  provisions in said  promissory  note
shall be deemed likewise amended.

B.  Borrower  hereby  confirms  all   representations  and  warranties
contained in the  Agreement  and  reaffirms  all  covenants  set forth
therein.  Further,  Borrower  certifies  that,  as of the date of this
Amendment,  there  exists  no  Event  of  Default  as  defined  in the
Agreement,  nor any  condition,  act or event which with the giving of
notice or the  passage  of time or both would  constitute  an Event of
Default.

IN WITNESS  WHEREOF,  the parties hereto have caused this amendment to
become effective as of the date and year first written above.

Union Bank of California, N.A.            EMCON

By:     /s/ William Hinch                 By:   /s/ R. Michael Momboisse
        --------------------                    ------------------------
        William Hinch                           R. Michael Momboisse

Title:  Vice President                    Title:  Chief Financial Officer &
                         Vice President Legal

                                          Dated:  1/28/97





                                      111

                                  EXHIBIT 10.22

                              ACQUISITION AGREEMENT


         THIS  AGREEMENT made and entered into as of this 6th day of March 1997,
by and between EMCON, a California corporation  ("EMCON"),  and its wholly-owned
subsidiary,  MONTEREY  LANDFILL GAS CORPORATION,  a California  corporation (the
"Seller"),  both having an address at 400 S. El Camino  Real,  Suite  1200,  San
Mateo, California 94402, and BIOMASS ENERGY PARTNERS V, L.P., a Delaware limited
partnership  having an office at 40 Tower  Lane,  Avon,  Connecticut  06001 (the
"Buyer").


                              W I T N E S S E T H :


         WHEREAS,  the Seller is party to those certain agreements  described on
Exhibit A annexed  hereto  (the  "Project  Agreements"),  pursuant  to which the
Seller was granted the  exclusive  lease of all rights to the Landfill Gas which
is produced within the Monterey  Peninsula Landfill located north of the Town of
Marina,  County  of  Monterey,  State of  California,  as shown on the  attached
Exhibit B (hereinafter referred to as the "Landfill"); and


         WHEREAS,  the District has constructed and installed  certain  Landfill
Gas recovery  wells and other  equipment in the Landfill and further  intends to
construct  additional  wells and equipment in the Landfill and all of such wells
and  equipment  are used or are to be used in the Landfill Gas Recovery  Project
conducted at the Landfill under the terms of the Project Documents and are owned
by the Seller; and


         WHEREAS,  the Seller desires to sell to the Buyer and the Buyer desires
to acquire from the Seller for the consideration hereinafter set forth, the sole
and  exclusive  right and privilege to drill and recover all Landfill Gas at the
Landfill and all other related rights covered by the Project Documents,  subject
to the terms and  conditions  of the  Project  Documents  and to the  provisions
hereof,  and the parties  further desire that the Seller shall sell to the Buyer
all of the Seller's interest in the wells and equipment used in the Landfill Gas
Recovery Project.


         NOW, THEREFORE, in consideration,  of the performance and observance of
the mutual covenants,  terms and conditions herein contained,  the parties agree
as follows:

                                      112
<PAGE>


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

             (a) "Agreements" - this Agreement, the Assignment, the Bill of Sale
and any other agreements between Buyer and Seller relating hereto.

             (b) "Amendment to and Restatement of Gas Sales Contract"  Amendment
and Restatement dated December 22, 1986, as amended,  originally  between Marina
Landfill Gas Corporation and Monterey Landfill Gas Corporation.

             (c) "Amendments" - The Third Lease Amendment and Amendment No. 2 to
Amended and Restated Gas Sales Contract,  each as more particularly described on
Exhibit A annexed hereto.

             (d) "Assignment" - the assignment of Seller's rights in the Project
Documents,  in the form  annexed  hereto as Exhibit E, and in form  suitable for
recording.

             (e) "Bill of Sale" - the bill of sale in the form annexed hereto as
Exhibit G.

             (f) "Code" - the Internal Revenue Code of 1986, as amended.

             (g) "Construction Contract" - defined as in Section 5(c).

             (h) "District" - Monterey Regional Waste Management  District,  the
owner and operator of the Landfill.

             (i)  "Equipment"  - the  Landfill  Gas  recovery  wells  and  other
equipment now used and to be used in  connection  with the Landfill Gas Recovery
Project  at  the  Landfill  and  more  particularly  described  in  the  Project
Documents.

             (j)  "Expansion  Area" -  Module 3 and the  "Wet  Weather"  area as
described on Exhibit B annexed hereto.

             (k) "Landfill" - Monterey  Peninsula  Landfill located in Monterey,
California, as shown on Exhibit B annexed hereto.

             (l)  "Landfill  Gas" - methane gas and other gases  produced by the
anaerobic decomposition of matter within the Landfill.

             (m) "Landfill Gas Lease" - the Lease, dated June, 1983, as amended,
originally  entered into between Monterey  Peninsula Garbage and Refuse Disposal
District and Marina Landfill Gas Corporation.

             (n)  "Landfill  Gas  Recovery  Project"  - the  project  to recover
Landfill Gas now and to be  undertaken  at the  Landfill,  utilizing the Project
Properties.

             (o)  "Permits" - the permits and licenses  relating to the Landfill
Gas Recovery Project as more fully described in Section 2(a)(iv).


                                      113
<PAGE>

             (p) "Project  Documents" - The Landfill Gas Lease, the Amendment to
and  Restatement  of Gas  Sales  Contract  and  the  Amendments,  each  as  more
particularly described as Exhibit A annexed hereto.

             (q) "Project Properties" - the assets described in Section 2(a).

             (r) "Section 29 Credits" - the credits against income tax liability
provided for the production and sale of fuel from a nonconventional source under
Section 29 of the Code.

             (s) "User" - Pacific Gas and Electric Company.

         2. SALE AND ASSIGNMENT.

             (a)  Subject  to the  payment  by  Buyer of the  purchase  price of
$1,150,000,  Seller  hereby  sells,  transfers  and assigns unto the Buyer,  its
successors and assigns, all of Seller's right, title and interest in

                 (i)  the  Project  Documents  and  the  Landfill  Gas  Recovery
Project,  including,  without  limitation,  all  easements,  rights of way,  and
appurtenances  and all rights to drill for  Landfill  Gas in all sections of the
Landfill, whether developed now or hereafter;

                 (ii) the  Landfill Gas and the Landfill Gas reserves at, in and
under the Landfill;

                 (iii) the Equipment; and

                 (iv) all  other  tangible  and  intangible  personal  property,
interests and rights relating to the Landfill Gas Recovery  Project,  including,
without  limitation,  any  use,  occupancy,  water,  environmental,   discharge,
construction and operating  permits or licenses (the  "Permits"),  to the extent
assignable.

             All  the   foregoing   are  referred  to  herein  as  the  "Project
Properties."

             All of Buyer's  rights  shall be subject to the rights of
the District under the Project Documents.


             (b) As a material  condition  hereof and covenant of the Buyer, the
Buyer agrees to be bound by all the terms, covenants, obligations and conditions
of the Project Documents.

             (c) The Seller has received from the Buyer simultaneously  herewith
all of the following duly executed:


                 (i) the Assignment; and


                 (ii) the Bill of Sale.

             (d) The Buyer has received from the Seller simultaneously herewith:

                 (i) the  Assignment,  duly  executed  by the  Seller  and  duly
consented to by the District;

                                      114
<PAGE>

                 (ii) the Bill of Sale;

                 (iii) such other  instruments  of transfer and consent as shall
be necessary to transfer to Buyer the rights to the Project Properties.

         3.  ALLOCATION  OF  PURCHASE  PRICE.  The  purchase  price set forth in
section 2(a) shall be allocated  as set forth in Exhibit D annexed  hereto.  The
Buyer and the  Seller  shall  report  the  transfer  of  project  properties  in
accordance  with the provisions of Section 1060 of the Internal  Revenue Code of
1986, as amended and the regulations thereunder.

         4. PAYMENT.

             (a) In consideration  for the Seller's  agreements  hereunder,  the
Buyer shall pay an aggregate of $1,150,000, payable as follows:

                 (i) The  Buyer has  heretofore  paid to the  Seller  the sum of
$7,500.

                 (ii) The Buyer has paid to the  Seller the sum of  $942,500  in
immediately available funds on the date hereof; and

                 (iii) The Buyer  shall pay to Seller  the sum of  $200,000,  in
immediately  available funds,  upon the first to occur of the following  events,
with  interest  at the rate of 9% per  annum  from  the  date of this  Agreement
through the date of payment, payable at the date of payment:

                       (x) December 31, 1997, if no changes to Section 29 of the
Code  materially  adverse to Buyer with  respect to the  Landfill  Gas
Recovery  Project shall have been enacted into law prior to that date;
or, if enacted, shall have been repealed prior to that date; or

                 (y) the date upon which an amendment to Section  29(g)(1)(A) of
the Code shall have been enacted into law;  provided  that the July 1, 1998 date
in such Section shall be changed to a date no earlier than December 31, 1997 and
no other  amendments to Section 29 of the Code  materially  adverse to the Buyer
with respect to the Landfill Gas Recovery  Project  shall have been enacted into
law; or

                 (z) the date  upon  which  the  next  Federal  budget  shall be
enacted into law;  provided that no changes to Section 29 of the Code materially
adverse to the Buyer with respect to the Landfill  Gas  Recovery  Project  shall
have been enacted into law in connection with the enactment of such budget.

If none of the above  events shall occur on or before  December 31, 1997,  then,
upon such date,  the  obligation  to make the  $200,000  payment  along with any
accrued  interest shall  terminate and be of no further force and effect and the
aggregate consideration shall be thereupon reduced automatically to $950,000.

         5.  EMCON'S  AND  SELLER'S  WARRANTIES.  EMCON and the  Seller  jointly
represent and warrant to the Buyer on and as of the date hereof:

             (a) The Seller is a  corporation  duly and  validly  organized  and
existing in good standing under the laws of the state of its  organization;  the


                                      115
<PAGE>

Seller has all necessary  power and authority to own its properties and carry on
its  business  in the places  where the  ownership  of such  properties  and the
conduct of such  business so requires;  the Seller has the  necessary  power and
authority  to  enter  into the  Agreements  and to  carry  out the  transactions
contemplated  hereunder  and  thereunder;  the  execution  and  delivery  of the
Agreements by the Seller and the  performance of its  obligations  hereunder and
thereunder,  including the conveyance of its rights under the Project  Documents
and the  acceptance of the purchase  price in exchange  therefor and the sale of
the Project Properties, have been duly authorized by all necessary action of the
Seller and do not violate or conflict  with (i) any provision of the Articles of
Incorporation  or  By-Laws  of the  Seller,  (ii)  any law or any  order,  writ,
injunction,  decree, rule or regulation of any court,  administrative  agency or
any other governmental  authority, or (iii) any agreement to which the Seller is
a party or by which the Seller's  interest in the Project  Properties  is bound;
the Seller is not subject to any restriction or agreement which (with or without
the giving of notice or passage of time or both)  prohibits or would be violated
by, and the Seller has  obtained  all of the  consents of the parties  necessary
for,  the  consummation  of  the  transactions   contemplated  hereby;  and  the
Agreements  constitute,  and when executed and delivered  will  constitute,  the
valid and binding obligations of the Seller enforceable in accordance with their
terms.

             (b) The  Seller  is the sole  owner  of the  leasehold  estate  and
Landfill  Gas rights  created or granted by the Project  Documents  all of which
upon  transfer  to Buyer  shall  be free and  clear  of all  liens,  claims  and
encumbrances  of any kind or nature  whatsoever.  With respect to the Equipment,
the  Seller has not  transferred  any  interest  in the  Equipment,  nor made or
suffered any lien, claim or encumbrance, to or by any person.

             (c) The  District  has entered into a  Construction  Contract  (the
"Construction  Contract")  with  O.W.T.  Construction  Company  effective  as of
December 31, 1996 to build an addition to the  Landfill Gas Recovery  Project in
the Expansion  Area. A true and complete copy of this  Construction  Contract is
attached to this  Agreement as Exhibit C. The  Construction  Contract is in full
force  and  effect,  is  valid  and  subsisting,  and  no  party  is in  default
thereunder.   The  Project  Documents,   including,   without  limitation,   the
Amendments,  and the Construction Contract, are valid and subsisting and in full
force and effect, no party is in default  thereunder,  and the Project Documents
grant all rights  necessary for the conduct of the Landfill Gas Recovery Project
upon the lands described therein.

             (d) The Seller has good and lawful right to assign rights under the
Project Documents and to assign the Landfill Gas lying in and under the Landfill
to the Buyer as done in the  Assignment  and to sell the Equipment as is done by
the Bill of Sale.

             (e) The Buyer shall have the exclusive  right to recover and remove
the Landfill Gas in and under the Landfill (including any areas of the Landfills
not yet developed), subject to the terms of the Project Documents.

             (f) The  Seller  has  granted  to the  Buyer  its  entire  economic
interest in the Landfill Gas in the Landfill subject to the terms hereof.

             (g) The Project Properties will be kept free from any adverse lien,
security interest or encumbrance  attributable to the acts of the Seller and the
Seller warrants  specially its title to the leasehold  estate granted herein and
hereby subject to the terms of the Project Documents.

             (h) All income, sales, use, value added, or other taxes,  licenses,
tolls, inspection or other fees, permits or certificates  ("Imposts") which were
or may be required to be paid or obtained in connection  with the Seller and the
Seller's  business  operations  have been, or when due will promptly be, paid in
full or obtained.

                                      116
<PAGE>

             (i) There is no action,  suit or  proceeding  pending or threatened
against  the Seller or any other  party  before or by any court,  administrative
agency or other governmental  authority  affecting the Project  Properties,  the
Landfill  Gas  Recovery  Project  or  the   transactions   contemplated  by  the
Agreements.  In  connection  with its  operation  of the  Landfill  Gas Recovery
Project,   the  Seller  has  complied  with  all  applicable   laws,   statutes,
regulations,  ordinances and rules,  including those relating to the environment
and the Seller and the District  have secured all necessary  Permits,  copies of
which have been heretofore furnished to the Buyer.

             (j) The Seller has furnished or will, upon request,  furnish to the
Buyer  a  true,  correct  and  complete  copy  of  the  Project  Documents,  the
Amendments,  the  agreement  with the User relating to the sale by the Seller to
the User of electricity and of each and every material document  delivered to or
by the  Seller,  as the case may be,  in  connection  with the  purchase  of the
Project Properties by Seller.

             (k) To the best of Seller's  knowledge,  the  Equipment  is in good
working order and operating condition.

             (l) The gas flow projections prepared by John Pacey, dated December
12, 1996,  attached to this  Agreement  as Exhibit F,  represent  Seller's  best
estimate of the flow of Landfill Gas to be produced at the Landfill Gas Recovery
Project from January 1, 1997 to 2020.  Buyer  acknowledges  that projections and
the related representations herein are not to be construed as a guarantee of the
actual flow of Landfill Gas to be provided at the Landfill Gas Recovery  Project
after the closing. The attached Exhibit H represents Seller's accurate statement
of income received from the sale of LFG to the District for the period indicated
in Exhibit H. In addition,  the Section 29 Credits generated by the Landfill Gas
Recovery Project for the period January 1, 1994 through November 30, 1996 are as
follows:

                           1994 - 12 months - $126,588
                           1995 - 12 months - $173,562
                           1996 - 11 months - $120,621

             (m)  In  connection  with  the  construction,  fuel  supply,  power
generation and transmission  and other operations and processes  relating to the
Landfill Gas  Recovery  Project,  no release,  emission,  or discharge  into the
environment  of petroleum  or petroleum  products,  or hazardous  substances  as
defined  under  the  Comprehensive  Environmental  Response,  Compensation,  and
Liability Act of 1980, 42 U.S.C.  ss.9601 et seq., or hazardous waste as defined
under the Solid Waste Disposal Act, 42 U.S.C. ss.6901 et seq., or air pollutants
as  defined  under the  Clean  Air Act,  42  U.S.C.  ss.7401  et seq.,  or toxic
pollutants as defined under the Clean Water Act, 33 U.S.C. ss.1251 et seq., has,
to the best of the  Seller's or the  Seller's  Affiliate's  knowledge  and after
inquiry,  occurred,  is presently occurring,  or is expected to occur other than
federally  permitted  releases  or  those  equal  to  or  less  than  reportable
quantities, or other than releases, emissions or discharges that do not or would
not  exceed  applicable  standards  or  limitations  under any other  applicable
federal, state, or local laws or regulations. The Landfill Gas Recovery Project,
the Project Properties, and the Seller's use and proposed use thereof are not in
violation of any environmental or occupational  safety and health laws, or other
applicable law now in effect,  the effect of which violation,  in any case or in
the  aggregate,  would  materially  adversely  affect the  Landfill Gas Recovery
Project or the Seller's use thereof,  or which, in any case or in the aggregate,
would impose a material liability on or jeopardize the interest of the Seller in
the  Landfill  Gas  Recovery  Project.  Seller has no  knowledge  of any past or
existing  violations of any such laws,  ordinances or regulations  issued by any
governmental authority.

                                      117
<PAGE>

             (n) Except with respect to the Equipment,  as to which Seller makes
no representation, there are no liabilities or obligations affecting the Project
Properties  or the Landfill Gas Recovery  Project,  except as  specifically  set
forth in this Agreement or the Project Documents.

             (o) To the best of their  knowledge,  neither  EMCON nor  Seller is
aware of any fact or circumstance through the date hereof that would prevent the
Landfill  Gas to be  recovered  from the  Landfill  Gas  Recovery  Project to be
eligible for Section 29 Credits at least through December 31, 2002. For purposes
hereof, the liability of EMCON and Seller for a breach of this warranty shall in
the  aggregate  not  exceed the total  purchase  price  actually  paid to Seller
pursuant to Section 4 above.

         6. BUYER'S WARRANTIES. the Buyer represents and warrants to the Seller:

             (a) The Buyer is a limited  partnership duly and validly  organized
and existing in good standing under the laws of the state of Delaware; the Buyer
has all power and authority to own its  properties  and carry on its business in
the  places  where the  ownership  of such  properties  and the  conduct of such
business so  requires;  the Buyer has the power and  authority to enter into the
Agreements,  and to  carry  out  the  transactions  contemplated  hereunder  and
thereunder;  the execution  and delivery of the  Agreements by the Buyer and the
performance of its obligations  hereunder and thereunder,  including the payment
of the purchase  price in exchange  for the  assignment  of the Seller's  rights
under the Project  Documents,  have been duly authorized by all necessary action
of the  Buyer and do not  violate  or  conflict  with (i) any  provision  of the
Buyer's  limited  partnership  agreement or certificate of limited  partnership,
(ii) any law, or any order, writ, injunction,  decree, rule or regulation of any
court,  administrative agency or any other governmental  authority, or (iii) any
agreement  to which the  Buyer is a party or by which  the  Buyer is bound;  the
Buyer is not subject to any  restriction or agreement which (with or without the
giving of notice or the passage of time or both)  prohibits or would be violated
by, and the Buyer has obtained all of the  consents of third  parties  necessary
for,  the  consummation  of  the  transactions   contemplated  hereby;  and  the
Agreements  constitute and when executed will constitute,  the valid and binding
obligations of the Buyer enforceable in accordance with their terms.

         7. INDEMNIFICATION BY SELLER.

             (a) The Seller hereby indemnifies and holds the Buyer harmless from
and  against  any and all loss,  cost,  damage,  injury or  expense  (including,
without limitation,  court costs and reasonable attorneys' fees) wheresoever and
howsoever  arising  which the Buyer or its  officers,  directors,  shareholders,
agents,  employees,  successors  or assigns may incur by reason of any breach by
the Seller of any of the warranties or  representations  by, or obligations  of,
the Seller set forth in this  Agreement,  up to and  including  the date of this
Agreement.  The Seller further indemnifies and holds the Buyer harmless from and
against any loss  sustained or reasonable  expense  incurred by the Buyer as the
direct result of, or arising out of, the  imposition on the Equipment of any tax
lien, or the foreclosure of such lien, by virtue of the Seller's failure to pay,
or the  underpayment  of, any tax required to be paid by the Seller  pursuant to
this Agreement.

             (b) Without  limiting the  generality of the  provisions of Section
7(a) above, the Seller further indemnifies and holds the Buyer harmless from any
loss, liability,  claim, damage or expense resulting from any defect of title as
specially  warranted herein and further agrees to assume and bear the reasonable
expense of the  defense of any action  brought  against the Buyer as a result of


                                      118
<PAGE>

such title defect;  and the Seller covenants that it will take no action or omit
to  take  any  action  which  would  result  in  the  amendment,   modification,
cancellation  or  termination  either  of  the  Project  Documents  unless  such
amendment,  modification,  cancellation  or  termination  shall not diminish the
Buyer's rights under this Agreement.  If the Seller fails to perform any of such
covenants and agreements  within a reasonable time after written notice thereof,
the Buyer shall have the right to make the same and to perform  such  obligation
and cause Seller to reimburse Buyer for its cost in so doing.

         8. INDEMNIFICATION BY BUYER. The Buyer hereby indemnifies and holds the
Seller  harmless  from and against  any and all loss,  cost,  damage,  injury or
expense (including,  without limitation,  court costs and reasonable  attorneys'
fees) wheresoever and howsoever arising which the Seller or its officers, agents
or  employees  may  incur by  reason  of any  breach  by the Buyer of any of the
warranties or representations by, or obligations of, the Buyer set forth in this
agreement.  The Buyer further indemnifies and holds the Seller harmless from and
against any loss  incurred by the Seller as the direct result of, or arising out
of, the imposition on the Equipment of any tax liens, or the foreclosure of such
lien, by virtue of the Buyer's failure to pay, or the Buyer's  underpayment  of,
any federal,  state or local income tax liability,  franchise tax,  capital tax,
value added tax or other taxes or fees.

         9. NOTICES.

             Any notice,  consent,  communication or delivery which is permitted
or required  hereunder shall be duly and properly given if in writing and either
delivered  personally  to the person to whom it is  authorized to be given or if
sent by nationally  recognized  over-night  courier  (including express mail) or
registered or certified mail,  return receipt  requested,  postage  prepaid,  as
follows:

                  If to the Seller:

                  Monterey Landfill Gas Corporation
                  c/o EMCON
                  400 S. El Camino Real, Suite 1200
                  San Mateo, California 94402
                  Attention:  R. Michael Momboisse, Esq.
                  Telecopy Number:  415-375-0763

                  If to EMCON:

                  EMCON
                  400 S. El Camino Real, Suite 1200
                  San Mateo, California 94402
                  Attention:  R. Michael Momboisse, Esq.
                  Telecopy Number:  415-375-0763
                  If to the Buyer:

                                      119
<PAGE>


                  Biomass Energy Partners V, L.P.
                  c/o ZFC Energy, Inc.
                  40 Tower Lane
                  Avon, Connecticut 06001
                  Attention:  Mr. Martin F. Laughlin
                  Telecopy Number:  (860) 677-4036

                  With a copy to:

                  Newman Tannenbaum Helpern Syracuse & Hirschtritt LLP
                  900 Third Avenue
                  New York, New York  10022
                  Attention:  Stephen Rosenberg, Esq.
                  Telecopy Number:  (212) 371-1084

         Changes of address or parties to be notified shall be  accomplished  in
like manner.

         10. BEST EFFORTS; FURTHER ASSURANCES.  Each of the Buyer and the Seller
agree to use their best  efforts in good faith to  consummate  the  transactions
provided  for and  contemplated  by this  Agreement.  Each of the  Buyer and the
Seller further agree to execute and deliver to the other party such documents or
instruments  as shall be  reasonably  requested  by such other party in order to
carry out the transactions contemplated by this agreement.

         11. MISCELLANEOUS.

             (a)  SURVIVAL.  The  covenants,  agreements,   representations  and
warranties  made  herein of each of the Seller and the Buyer  shall  survive the
execution  and  delivery  of  this  Agreement,  the  other  Agreements,  and the
consummation of the transactions described herein or therein.

             (b)  AMENDMENTS.  This Agreement may not be altered,  modified,  or
amended except by a writing signed by the parties.

             (c)  SUCCESSORS.  The rights and  obligations of the parties hereto
shall  inure to the  benefit  of, and be binding  and  enforceable  upon,  their
respective legal representatives,  successors, assigns, and transferees. Without
limiting  the  foregoing,  the Buyer  shall  have the right to assign all of its
rights and  obligations  under this Agreement to a limited  partnership of which
the Buyer is the general partner. Upon any such assignment, the Buyer shall give
notice thereof to the Seller.

             (d)  GOVERNING  LAW.  This  Agreement  shall be  governed  by,  and
interpreted  under, the laws of the State of California  applicable to contracts
made and to be performed  therein,  without  giving effect to the  principles of
conflict of laws.

             (e) GENDER. All terms and words used in this Agreement,  regardless
of the number or gender in which they are used,  shall be deemed to include  any
other number and any other gender, as the context may require.

             (f)  CAPTIONS.  Captions  used herein are  inserted  for  reference
purposes only and shall not affect the  interpretation  or  construction of this
Agreement.

                                      120
<PAGE>

             (g)  COUNTERPARTS.  This  Agreement  may be executed in one or more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same agreement.

                                      121
<PAGE>

         IN  WITNESS  WHEREOF,  the  Buyer and the  Seller  have  executed  this
Agreement on the date first above written.

           SELLER:

           MONTEREY LANDFILL GAS CORPORATION


           By:    /s/ R. Michael Momboisse
                  --------------------------
           Name:  R. Michael Momboisse
           Title: Chief Financial Officer
                  Vice President - Legal


           BUYER:

           BIOMASS ENERGY PARTNERS V, L.P.

           By: ZFC Energy, Inc., General Partner

           By:     /s/ Martin F. Laughlin
                   ------------------------
           Name:   Martin F. Laughlin
           Title:  Vice President

           EMCON:

           EMCON, a California corporation

           By:    /s/ R. Michael Momboisse
                  -------------------------
                  R. Michael Momboisse
                  Chief Financial Officer
                  Vice President -Legal






                                      122


                                  EXHIBIT 10.23

                          AMENDMENT TO CREDIT AGREEMENT

THIS  THIRD  AMENDMENT  ("Amendment")  is made  effective  as of the 27th day of
March,  1997, by and between EMCON  ("Borrower")  and Union Bank of  California,
N.A. ("Bank").

                                    RECITALS

A.             Borrower is currently  indebted to Bank pursuant to the terms and
               conditions of that certain  Credit  Agreement  dated February 29,
               1996 and amended on September  13, 1996 and January 27, 1997 (the
               "Agreement");

B.             Borrower  and Bank have agreed to amend the  Agreement to reflect
               certain changes in the terms and conditions set forth therein.

C.             All  references  to the  "Prime  Rate" in all the Loan  Documents
               shall  be  deemed  to be  references  to  the  "Reference  Rate".
               "Reference  Rate" shall mean the rate announced by Bank from time
               to time at its corporate  headquarters as its Reference Rate. The
               Reference  Rate is an index rate  determined by Bank from time to
               time as a means of pricing  certain  extensions  of credit and is
               neither  directly  tied to any external rate of interest or index
               nor  necessarily  the lowest rate of interest  charged by Bank at
               any given time.

NOW, THEREFORE, the parties hereto agree as follows:

1.             Section 6.3 of the  Agreement  the first and the second lines are
               to read as follows:

                    Pay any dividends  except those payable  solely in
                    Borrower's capital stock,  provided however,  that
                    Keystone   Recovery,   Inc.   may  pay   dividends
                    according   to   the   Keystone   Recovery,   Inc.
                    Distribution  Policy in effect at the time of this
                    Amendment,   so  long  as  the  aggregate   annual
                    distribution   does  not  exceed  Fifty   Thousand
                    Dollars ($50,000);

                          GENERAL AMENDMENT PROVISIONS

A. Except as specifically provided herein, all terms and conditions of
the  Agreement  remain in full  force and  effect,  without  waiver or
modification.  All terms defined in the Agreement  shall have the same
meaning  when  used in this  Amendment,  and  this  Amendment  and the
Agreement shall be read together as one document. Where any provisions
of the Agreement amended by this Amendment appear in a promissory note
tied to the Agreement,  the same  provisions in said  promissory  note
shall be deemed likewise amended.

B.  Borrower  hereby  confirms  all   representations  and  warranties
contained in the  Agreement  and  reaffirms  all  covenants  set forth
therein.  Further,  Borrower  certifies  that,  as of the date of this
Amendment,  there  exists  no  Event  of  Default  as  defined  in the
Agreement,  nor any  condition,  act or event which with the giving of
notice or the  passage  of time or both would  constitute  an Event of
Default.

IN WITNESS  WHEREOF,  the parties hereto have caused this amendment to
become effective as of the date and year first written above.

Union Bank of California, N.A.           EMCON

By:     /s/ Susan M. Cunliffe            By:      /s/ R. Michael Momboisse
        ---------------------                    -------------------------
        Susan M. Cunliffe                        R. Michael Momboisse
Title:  Vice President                   Title:  Chief Financial Officer
                                                 and Vice President- Legal
                                         Dated:  3/27/97







                                      123

                             EXHIBIT 11.1

                                 EMCON
                COMPUTATION OF INCOME (LOSS) PER SHARE
                 (In thousands except per share data)
<TABLE>
<CAPTION>

                                                                                       Twelve months ended
                                                                                            December 31,
                                                                                  1996          1995          1994
                                                                                  ----          ----          ----
<S>                                                                            <C>        <C>         <C>

Net income (loss) .........................................................    $(10,091)     $ 1,786     $(1,917)

     Pro forma interest income related to modified
     treasury stock method ................................................        N/A           221         N/A
                                                                               --------      -------     -------

Adjusted net income (loss) ................................................    $(10,091)     $ 2,007     $(1,917)
                                                                               ========      =======     =======


Weighted average number of common shares outstanding
during the period .........................................................       8,485        8,274       7,919

     Common equivalent shares from outstanding stock options using the
     modified treasury stock method........................................         N/A          687         N/A


     Incremental shares to reflect full dilution ..........................        N/A             0         N/A
                                                                               --------      -------     -------

Total shares for purposes of calculating diluted
income (loss) per share (1) ...............................................       8,485        8,961       7,919
                                                                               ========      =======     =======

Primary income (loss) per share ...........................................    $  (1.19)     $  0.22     $ (0.24)
                                                                               ========      =======     =======

Fully diluted income (loss) per share .....................................    $  (1.19)     $  0.22     $ (0.24)
                                                                               ========      =======     =======
</TABLE>

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

(1) This  calculation is submitted in accordance  with  Regulation S-K
Item 601(b)(11) although not required by footnote 2 to paragraph 14 to
APB opinion No. 15, because it results in dilution of less than 3%.





                                      124




                             EXHIBIT 21.1

                SIGNIFICANT SUBSIDIARIES OF REGISTRANT




NAME                                                       PLACE OF ORGANIZATION
- ----                                                       --------------------
Columbia Analytical Services, Inc.                              Washington

EMCON Alaska, Inc.                                              Alaska

ET Environmental Corporation                                    Delaware
(50/50 Joint Venture with
The Turner Construction Company)

Organic Waste Technologies, Inc.                                Delaware









                                      125

                             EXHIBIT 23.1

          CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent  to the  incorporation  by  reference  in the  Registration
Statements (Form S-8 Nos. 33-83060,  33-61369 and 33-42186) pertaining
to the EMCON 1986 Incentive  Stock Option and 1988 Stock Option Plans,
the EMCON Employee Stock Purchase Plan and the EMCON  Restricted Stock
Plan of our  report  dated  February  6,  1997,  with  respect  to the
consolidated  financial  statements  and schedule of EMCON included in
the Annual Report (Form 10-K) for the year ended December 31, 1996.



San Francisco, California
March 26, 1997










                                      126

<TABLE> <S> <C>

<ARTICLE>                                              5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
consolidated balance sheets, consolidated statements of income, and consolidated
statements  of cash flows  included  in the  Company's  Form 10-K for the twelve
month  period  ended  December  31,  1996,  and is  qualified in its entirety by
reference to such financial statements and the notes thereto.
</LEGEND>
<CURRENCY>                                                    U.S. DOLLARS
       
<S>                                                                  <C>
<PERIOD-TYPE>                                                       12-MOS
<FISCAL-YEAR-END>                                               JAN-3-1997
<PERIOD-START>                                                 DEC-31-1995
<PERIOD-END>                                                    JAN-3-1997
<EXCHANGE-RATE>                                                          1
<CASH>                                                           5,331,000
<SECURITIES>                                                             0
<RECEIVABLES>                                                   33,811,000
<ALLOWANCES>                                                       951,000
<INVENTORY>                                                              0
<CURRENT-ASSETS>                                                52,902,000
<PP&E>                                                          30,023,000
<DEPRECIATION>                                                  15,301,000
<TOTAL-ASSETS>                                                  90,912,000
<CURRENT-LIABILITIES>                                           18,301,000
<BONDS>                                                                  0
<COMMON>                                                        42,001,000
                                                    0
                                                              0
<OTHER-SE>                                                        (16,000)
<TOTAL-LIABILITY-AND-EQUITY>                                    90,912,000
<SALES>                                                        117,705,000
<TOTAL-REVENUES>                                               117,705,000
<CGS>                                                           52,608,000
<TOTAL-COSTS>                                                   52,608,000
<OTHER-EXPENSES>                                                75,989,000
<LOSS-PROVISION>                                                 1,023,000
<INTEREST-EXPENSE>                                               1,112,000
<INCOME-PRETAX>                                               (13,027,000)
<INCOME-TAX>                                                   (2,936,000)
<INCOME-CONTINUING>                                           (10,091,000)
<DISCONTINUED>                                                           0
<EXTRAORDINARY>                                                          0
<CHANGES>                                                                0
<NET-INCOME>                                                  (10,091,000)
<EPS-PRIMARY>                                                       (1.19)
<EPS-DILUTED>                                                       (1.19)
        
                                    

</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission