EXHIBIT 10.37

                      EXTENSION AND MODIFICATION AGREEMENTS

THIS EXTENSION AND MODIFICATION AGREEMENT  ("Agreement") is made as of March 19,
1999  between  UNION BANK OF  CALIFORNIA,  N.A.,  formerly  known as The Bank of
California, N.A. ("Bank") and EMCON, a California corporation.

RECITALS

This  Agreement  is made and entered  into in  reliance  on the  accuracy of the
following  recitals which are  acknowledged  by Borrower and Bank to be true and
accurate:

A. Borrower is liable to Bank as follows (collectively,  "Liabilities"):  a line
of credit  ("Line of Credit") and a term loan ("Term Loan")  originally  granted
pursuant to the terms of that certain Credit  Agreement dated as of February 29,
1996 (as  amended,  supplemented,  extended,  restated,  or renewed from time to
time, the "Credit  Agreement") by and between Bank and Borrower and evidenced by
that certain (i) Promissory Note Base Rate dated January 27, 1999 in the maximum
principal amount of $10,000,000.00  ("Line of Credit Note");  and (ii) Term Loan
Note dated February 29, 1996 in the original  principal amount of $10,000,000.00
("Term  Note"  together  with  the  Line  of  Credit  Note,  each a  "Note"  and
collectively,  the "Notes").  As of March 17, 1999,  the  outstanding  principal
balance  under  the (1) Line of Credit  Note was  $1,190,893.71,  together  with
accrued and unpaid  interest in the amount of  $9,138.86;  and (2) Term Note was
$3,428,570.00,  together  with  accrued  and  unpaid  interest  in the amount of
$10,497.94;  and (3)  together  with all  accruing  interest,  fees,  costs  and
expenses  provided in the Loan Documents.  The purpose of the Line of Credit was
to support  working  capital needs.  The purpose of the Term Loan was to support
Borrower's  acquisition of Organic Waste Technologies ("OWT") and, in connection
with  this   acquisition,   Borrower   obtained   financing  for  the  operating
requirements of OWT from Charter One Bank ("Charter One"). As of March 17, 1999,
$150,000.000 in the aggregate is unpaid under unexpired letters of credit issued
by Bank for the account of Borrower.

B. To secure Borrower's  obligations to Bank, Borrower executed and delivered to
Bank that certain (i) Security Agreement; and (ii) Pledge Agreement,  each dated
as of  February  29,  1996,  each  executed by Borrower in favor of Bank (each a
"Security Agreement" and collectively,  the "Security  Agreements")  pursuant to
which  Borrower  granted to Bank a security  interest in personal  property  and
fixtures described therein  ("Collateral") which security interest was perfected
by that certain UCC-1  Financing  Statement filed February 29, 1999, as File No.
9606660051,  in the Office of the  Secretary of State of the State of California
("UCC-1").  Pursuant  to the  Security  Agreements  and UCC-1  Bank has a valid,
perfected lien of first priority upon the Collateral.

C. The following documents evidence  Borrower's  obligations to and relationship
with Bank:  the  Agreement,  the Line of Credit Note,  the Term Note, the Credit
Agreement,  the Security Agreements,  the Additional Security Agreement (defined
below), the SLC Agreement (defined below) and the UCC-1. The documents described
above,  together  with any other  documents  executed by or among the parties in
connection with the  Liabilities,  and any and all amendments and  modifications
thereto,  are referred to  collectively  in this Agreement as "Loan  Documents".
There are not written or oral agreements concerning or affecting the Liabilities
between  Borrower  on the one hand and Bank on the  other,  other  than the Loan
Documents. Unless otherwise defined herein, all capitalized terms shall have the
meanings assigned to them in the Loan Documents.



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D.  Borrower,  Bank and Charter One have been working to combine  Borrower's and
OWT's existing financing  arrangements into a combined credit  relationship that
would be  agented by Bank  ("Joint  Lending  Project").  Borrower  has  recently
advised Bank and charter One that  Borrower may be sold and has  requested  that
Bank and Charter One defer work on the combined credit relationship. The Line of
Credit Note will mature on March 19,  1999,  on which date all sums of principal
and  accrued  unpaid  interest  will be due and  payable in full.  Borrower  has
advised Bank that because of the potential  sale of Borrower,  Borrower will not
satisfy it obligations to Bank on the Termination Date ("Potential Default"). In
addition,  Borrower has advised Bank that financing requirements for its working
capital  requirements equal  approximately  $5,000,000.00 for the remaining term
(as extended by this Agreement) of the Line of Credit Note. Borrower has further
requested that Bank extend the Termination Date and provide additional credit in
the form of a cash secured standby letter of credit.  Borrower is also agreeable
to a reduction in the maximum amount available under the Line of Credit Note and
to the cancellation of OWT's line of credit from Charter One.

E. At Borrower's  request,  Bank is willing to modify the Loan  Documents as set
forth herein, provided that the conditions set forth herein are satisfied within
the time periods  required under this Agreement,  and provided  further that all
security  interests and liens under the Loan  Documents  shall continue to exist
and remain in full force and effect.  Bank is entering  into this  Agreement for
the sole purpose of allowing Borrower an additional opportunity to negotiate the
possible sale of Borrower.

AGREEMENT

NOW  THEREFORE,  in  consideration  of the  foregoing  and  for  other  valuable
consideration,  the receipt and  sufficiency  of which are hereby  acknowledged,
Bank and Borrower hereby agree as follows:

1. Incorporation of Recitals.  Each of the above recitals is incorporated herein
and deemed to be the  agreement  of the Bank and  Borrower and is relied upon by
each party to this Agreement in agreeing to the terms of this Agreement.

2. Confirmation  of  Collateral.  Borrower  hereby grants  and confirms that all
obligations  of  Borrower  to Bank are secured by a  perfected,  first  priority
security interest in Collateral.

3. Conditions  Precedent.  Borrower understands that this Agreement shall not be
effective  and Bank  shall  have no  obligation  to amend  the terms of the Loan
Documents as provided  herein unless and until each of the following  conditions
precedent  has been  satisfied  not later than March 19, 1999, or waived by Bank
(in Bank's sole discretion):

         (a) Borrower  shall have executed and delivered to Bank this  Agreement
         together with (i) a promissory note, in form and substance satisfactory
         to Bank in the  maximum  principal  amount of FIVE  MILLION  AND NO/100
         DOLLARS  ($5,000,000.00),  dated  as of  the  date  of  this  Agreement
         ("Replacement  Line of Credit Note"),  which Replacement Line of Credit
         Note  shall  supersede  and  replace  the  Line of  Credit  Note in its
         entirety,  and which Replacement Line of Credit Note shall evidence all
         amounts outstanding under the Line of Credit Note, and such outstanding
         amounts  to be repaid as  provided  in the  Replacement  Line of Credit
         Note; and (ii) a security agreement, in form and substance satisfactory
         to Bank  ("Additional  Security  Agreement"),  granting Bank a security
         interest in that certain  certificate of deposit no.  7009033775 in the
         principal  amount  of  $136,500.00,  issued  and held by Bank,  and all
         renewals  of  and  substitutions  for  such  certificate   ("Additional
         Collateral").


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         (b) Borrower shall have  reimbursed  Bank for Bank's costs and expenses
         through  the date of this  Agreement,  including,  without  limitation,
         reasonable  attorney's fees and expenses  (including the fees of Bank's
         inside  counsel),  incurred in  connection  with both the Joint Lending
         Project and the  negotiation  and  drafting of this  Agreement  and the
         transactions contemplated hereby in the amount of $6,610.00.

         (c) On or before  such time as Bank may  require,  Borrower  shall have
         taken any and all actions and  executed  and  delivered to Bank any and
         all documents  necessary or  appropriate  in Bank's sole  discretion to
         effectuate this Agreement.

         (d) Borrower shall have paid to Bank a non-refundable documentation fee
         in the amount of $10,000.00

4.  Documentation  Fee. In  consideration  of the  extension  and  modifications
granted by Bank to Borrower  pursuant to this Agreement,  Borrower agrees to pay
to Bank a  non-refundable  fee of $10,000.00 which amount shall be paid as maybe
provided in Section 3 above.

5. Waiver of Potential  Default.  Subject to all of the terms and  conditions of
this Agreement,  including,  without  limitation,  the requirements of Section 3
hereof,  Bank hereby agrees to waive its default  rights in connection  with the
Potential Default,  provided,  however,  that this waiver is not a waiver of any
subsequent  breach of the same provision of the Credit  Agreement or any Note or
other Loan Documents,  nor is it a waiver of any current or future breach of any
other  provision of the Credit  Agreement  or any Note or other Loan  Documents.
Bank is not obligated to provide this or any other waiver of its default rights.
Further,  the Bank reserves all of the rights,  powers and remedies available to
it under the Credit  Agreement,  each Note and any other Loan  Documents  if any
subsequent  breach of the same  provisions or any other  provision of the Credit
Agreement, any Note or any other Loan Document should occur.

6. Modification of Loan Documents.  To induce Bank to enter into this Agreement,
Borrower agrees that the Loan Documents are hereby  supplemented and modified as
follows,  which  modifications  shall supersede and prevail over any conflicting
provisions of the Loan Documents:

         (a)  The date "March 19, 1999" in the paragraph  entitled  "Termination
Date" in Article  One of the Credit  Agreement  is hereby  amended to "April 30,
1999".

         (b)  Section  2.1.1 of the Credit  Agreement  is hereby  deleted in its
entirety and replaced with the following:

                  "2.1.1 Line of Credit.  Subject to the terms and conditions of
                  this Agreement  from time to time prior to  Termination  Date,
                  upon request by  Borrower,  Bank will  provide  extensions  of
                  credit ("Line of Credit") to Borrower in the form of Advances.
                  Letters of Credit that, in the aggregate,  shall not exceed at
                  any time FIVE MILLION AND NO/100 DOLLARS  ($5,000,000.00) (the
                  "Credit Limit"), in the following manner."

         (c) Section  2.1.1(a) of the Credit  Agreement is hereby deleted in its
entirety and replaced with the following:

                  "(a)  Advances.  Provide up to the Credit  Limit in  aggregate
                  outstanding principal amounts ("Advance Sublimit") in Advances
                  to Borrower.  Each Advance  shall be payable no later than the
                  Termination  Date.  Borrower  may borrow,  repay and  reborrow
                  under the


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                  Advance Sublimit, as Borrower may elect, in minimum amounts of
                  $10,000.000 or integral multiples  thereof.  Advances shall be
                  used by Borrower  for the  purpose of working  capital for its
                  own operations".

         (d) A new Section  2.1.3 is hereby  added to the Credit  Agreement  and
shall read as follows:

                  "2.1.3 Standby Letter of  Credit/Cash  Secured.  Provide up to
                  $136,500.00  in aggregate  outstanding  unpaid face amount for
                  the  purpose  of  issuing an  irrevocable,  standby  letter of
                  credit,  in form and substance  satisfactory  to Bank, for the
                  account of Borrower in United States Dollars ("SLC").  The SLC
                  shall expire on September 30, 1999.  Borrower  shall  execute,
                  deliver and perform in  accordance  with Bank's  standard form
                  Standby Letter of Credit Application & Agreement, all terms of
                  which  are   incorporated   herein  by  this  reference  ("SLC
                  Agreement").   To  secure   Borrower's   obligations  to  Bank
                  evidenced by the SLC Agreement,  Borrower  execute and deliver
                  to Bank that certain security  agreement dated as of March 19,
                  1999  (Additional  Security  Agreement")"  providing to Bank a
                  first priority security  interest in that certain  certificate
                  of  deposit  no.   7009033775  in  the  principal   amount  of
                  $136,500.00,  issued and held by Bank,  and all renewals of an
                  substitutions for such certificate".

7. Representations and Warranties.  To induce Bank to enter into this Agreement,
Borrower hereby represents and warrants to Bank as follows:

         (a) All representations and warranties  contained in this Agreement and
         in any and all of the other Loan  Documents  are true and correct as of
         the date of this Agreement, and all such representations and warranties
         shall survive the execution of this Agreement.

         (b)  The  execution,  delivery  and  performance  by  Borrower  of this
         Agreement   and  all  documents   contemplated   hereunder  are  within
         Borrower's powers,  have been duly authorized,  and are not in conflict
         with Borrower's  articles of incorporation or by-laws,  or the terms of
         any charter or other organizational  document of Borrower; and all such
         documents   constitute  valid  and  binding  obligations  of  Borrower,
         enforceable  in  accordance  with  their  terms.   In  addition,   such
         execution,  delivery and  performance  by Borrower will not violate any
         law, rule or order of any court or governmental agency or body to which
         Borrower  is  subject;  and cannot  (except as  expressly  provided  or
         contemplated  herein) result in the creation or imposition of any lien,
         security interest or encumbrance on any now owned or hereafter acquired
         property of Borrower.

         (c) With the exception of the Potential Default,  no event has occurred
         or failed to occur  that is, or,  with  notice or lapse of time or both
         would constitute a default, an event of default, or a breach or failure
         of any condition under any Loan Document.

         (d)  Each  Note  represents  an  unconditional,   absolute,  valid  and
         enforceable  obligation  against  Borrower.  Borrower  has no claims or
         defenses  against  Bank or any other  person or entity  which  would or
         might  affect;  (a) the  enforceability  of any  provisions of the Loan
         Documents;  or (b)  the  collectability  of  sums  advanced  by Bank in
         connection with the Liabilities.  Borrower understands and acknowledges
         that the Bank is entering into this  Agreement in reliance upon, and in
         partial consideration for, this acknowledgment and representation,  and
         agrees that such reliance is reasonable and appropriate.


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8. Borrower's  Covenants.  Unless Bank otherwise  consents in writing during the
extension period provided herein, Borrower will do the following:

         (a) Comply with all  requirements  of all Loan  Documents to the extent
not inconsistent with this Agreement.

         (b) On or before April 5, 1999,  provide Bank with written  evidence of
         the cancellation of OWT's credit facility with Charter One.

         (c) Not enter into any agreements  with any of its other creditors that
         might impair it ability to perform under this Agreement.

         (d)  Ensure  that Bank is fully  informed  at all times of all  matters
         relating to the  operation of  Borrower's  business,  including any new
         reformed or revived subsidiaries or affiliates,  any planned changes in
         key personnel or manner of operating its business.

         (e)  Ensure  that Bank is fully  informed  at all times of all  matters
         relating to the possible sale of Borrower.

         (f) Take any and all actions of any kind or nature  whatsoever,  either
         directly  or  indirectly,  that are  necessary  to  prevent  Bank  from
         suffering a loss with respect to the  Liabilities  or being deprived of
         the  Collateral  or the  Additional  Collateral,  or of any  rights  or
         remedies of Bank with respect to the Liabilities, the Loan Documents or
         this  Agreement  in the  event of a  default  by  Borrower  under  this
         Agreement or any other Loan  Documents (or the ability to exercise such
         any rights or remedies).

         (g)  Reimburse  Bank for  Bank's  costs  and  expenses  as set forth in
         Section  3(b) of this  Agreement  for such costs and expenses for which
         Bank  did  not  have  invoices  or  statements  as of the  date of this
         Agreement.

9. Additional Events of Default.  In addition to the events of default set forth
in the Loan Documents,  the occurrence of any of the following events of default
other than the  Potential  Default  shall be an event of default  and, at Bank's
option,  may make all obligations of Borrower  immediately due and payable,  all
without demand, presentment or notice, all of which requirements Borrower hereby
waives:

         (a)  Failure  to  perform  any of the  obligations  set  forth  in this
         Agreement or in any other Loan  documents  (as the same may be modified
         by this Agreement).

         (b) Any  representation  or warranty of Borrower herein or in any other
         Loan Document shall be false, misleading or incorrect.

         (c)  If  there  is  any  substantial  impairment  of  the  prospect  of
         Borrower's  satisfaction  of its  obligations  to Bank  or  substantial
         impairment of the value of the Collateral or the Additional Collateral,
         or any  substantial  impairment  of the  priority  of  Bank's  security
         interest in or lien on any Collateral or Additional Collateral.

10.  Remedies.  Upon the  occurrence  of an Event of  Default  and at all  times
thereafter,  Bank,  without the necessity of obtaining any prior approval of any
court, shall be entitled to terminate all advances or other extensions of credit
under the Loan  Documents and Bank shall also be entitled to exercise all rights
and  remedies  available  to Bank as a creditor  generally,  including,  without
limitation, all remedies


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available  to Bank  under the Loan  Documents,  as well as rights  and  remedies
available  to Bank at law or in equity.  All such rights and  remedies  shall be
cumulative.  No  failure or delay on the part of Bank in  exercising  any power,
right or  remedy  under  any of the Loan  Documents  shall  operate  as a waiver
thereof,  and no single or partial  exercise of any such power,  right or remedy
shall preclude any further  exercise thereof or the exercise of any other power,
right or remedy.

11. Dispute  Resolution.  This Agreement  hereby  incorporates  any  alternative
dispute  resolution  agreement  previously,  concurrently or hereafter  executed
between Borrower and Bank.

12. Waiver of Statute of  Limitations.  Borrower shall not please the statute of
limitations to any action brought by Bank with respect to the  Liabilities,  the
Notes,  Credit Agreement,  any other Loan Document,  the Collateral,  and hereby
waives  the  statute of  limitations  in respect of any and all sums due from it
under the Notes.

13.      Miscellaneous

         (a) All the parties hereto agree to and will cooperate  fully with each
         other in the  performance  of this  Agreement  and the  Loan  Documents
         including,  without limitation,  executing any additional documents and
         instruments  reasonable  or necessary to the full  performance  of this
         Agreement.  Without limiting the generality of the foregoing,  Borrower
         agrees to execute such other and further  documents and  instruments as
         Bank may request to implement the  provisions of this  Agreement and to
         perfect and protect the liens and  security  interests  created by this
         Agreement or any other Loan Document.

         (b) This  Agreement  shall be binding  upon and inure to the benefit of
         and be enforceable by the parties hereto,  their respective  successors
         and  assigns.  No other person or entity shall be entitled to claim any
         right or benefit hereunder,  including,  without limitation, the status
         of a third party beneficiary hereunder, except the Released Parties.

         (c) Bank and Borrower agree that except as expressly  provided  herein,
         the Loan Documents  shall remain in full force and effect in accordance
         with their respective  terms, and this Agreement shall not be construed
         to:

                  (i) Impair the validity, perfection or priority of any lien or
                  security interest securing Borrower's obligations to Bank;

                  (ii) Waive or impair any  rights,  powers or  remedies of Bank
                  under the Loan Documents;

                  (iii) Constitute an agreement by Bank or require Bank to grant
                  forbearance   periods   or  extend  the  term  of  the  Credit
                  Agreement, the Line of Credit Note, or the time for payment of
                  any of  Borrower's  obligations  to Bank  except as  expressly
                  provided  herein,  none of which Bank  agrees or has agreed to
                  do, and all of which  matters are in Bank's sole and  absolute
                  discretion; or

                  (iv) make any other loans or other  extension  of credit to or
                  for the benefit of Borrower.

         In the event of any  inconsistency  between the terms of this Agreement
         and any other Loan  Document,  this  Agreement  shall govern.  Borrower
         acknowledges  that it has  consulted  with  counsel and with such other
         experts and advisors as it has deemed necessary in connection with


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         the negotiation,  execution and delivery of this Agreement,  or has had
         an  opportunity  to so consult and has  knowingly  chosen not to do so.
         This Agreement shall be construed  without regard to any presumption or
         rule  requiring  that it be  construed  against the party  causing this
         Agreement or any part hereof to be drafted.  The headings  used in this
         Agreement  are  for  convenience  only  and  shall  be  disregarded  in
         interpreting the substantive provisions of this Agreement.

         (d) This Agreement and the other Loan Documents  shall not be deemed or
         construed to create a  partnership,  tenancy in common,  joint tenancy,
         joint  venture,  co-ownership  or any other  relationship  aside from a
         continuing  debtor-creditor  relationship  between  Borrower on the one
         hand and Bank on the other.

         (e) In case any provision in this Agreement  shall be invalid,  illegal
         or unenforceable,  such provision shall be severable from the remainder
         of this agreement and the validity,  legality and enforceability of the
         remaining  provisions  shall  not in any way be  affected  or  impaired
         thereby.

         (f) If Bank receives any payment or rents, issues,  profits or proceeds
         of any Collateral  which are subsequently  invalidated,  declared to be
         fraudulent  or  preferential,  set  aside or  required  to be paid to a
         trustee,  debtor-in-possession,  receiver  or any other party under any
         bankruptcy law, common law, equitable cause or otherwise, then, to such
         extent,  the  obligations  or part thereof  intended to be satisfied by
         such  payments or proceeds  shall be reserved  and  continue as if such
         payments or proceeds had not been received by Bank.

         (g) This Agreement may not be amended, waived or modified in any manner
         without  the  prior  written  consent  of the  party  against  whom the
         amendment, waiver or modification is sought to be enforced.

         (h)  Borrower  shall   reimburse  Bank  for  all  costs  and  expenses,
         including,   without   limitation,   reasonable   attorneys'  fees  and
         disbursements  (and fees and  disbursements of Bank's in-house counsel)
         expended  or incurred by Bank in an  arbitration,  mediation,  judicial
         reference,  legal  action or  otherwise  in  connection  with;  (a) the
         negotiation,  preparation, amendment, interpretation and enforcement of
         the Loan Documents,  including, without limitation, during any workout,
         attempted  workout,  and/or in  connection  with the rendering of legal
         advice as to Bank's  rights,  remedies and  obligations  under the Loan
         Documents; (b) collecting any sum which becomes due Bank under any Loan
         Document;  (c) any proceeding for declaratory  relief, any counterclaim
         to any proceeding,  or any appeal; or (d) the protection,  preservation
         or enforcement of any rights of Bank. For the purposes of this section,
         attorneys'  fees shall include,  without  limitation,  fees incurred in
         connection with the following: (1) contempt proceedings;  (2) discover;
         (3) any motion  proceeding or other  activity of any kind in connection
         with a bankruptcy  proceeding or case arising out of or relating to any
         petition  under Title 11 of the United Sates Code, as the same shall be
         in effect from time to time, or any similar law; (4) garnishment, levy,
         and debtor and third party examinations;  and (5) postjudgment  motions
         and  proceedings  of  any  kind,  including,  without  limitation,  any
         activity  taken to collect or enforce any  judgment.  All of such costs
         and expenses  shall bear  interest  from the time of demand at the rate
         then in effect under the Line of Credit Note.

         (i) Except as otherwise  provided herein,  this Agreement and all other
         Loan  Documents and the rights and  obligations  of the parties  hereto
         shall be governed by the laws of the State of California without regard
         to principles concerning choice of law. In any action arising out of or
         connected with this Agreement,  Borrower hereby  expressly  consents to
         the personal  jurisdiction of any state or federal court located in the
         State of  California  and also  consents  to  service of process by any
         means authorized by federal or governing state law.


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         (j) This Agreement may be executed in any number of counterparts which,
         when taken together, shall constitute but one agreement.

         (k) All representations, warranties, covenants, agreements, waivers and
         releases of Borrower contained herein shall survive the payment in full
         of Borrower's obligations to Bank.

         (l)  Any  notices  or  other  communications  provided  for or  allowed
         hereunder  shall be effective  only when given by one of the  following
         methods and addressed to the respective party at its address given with
         the  signatures at the end of this Agreement and shall be considered to
         have been validly given:  (a) upon delivery,  if delivered  personally;
         (b) upon  receipt,  if mailed,  first class postage  prepaid,  with the
         United States Postal Service;  (c) on the next business day, if sent by
         overnight  courier  service  of  recognized  standing;   and  (d)  upon
         telephoned  confirmation  of receipt,  if telecopied.  The addresses to
         which  notices or demands  are to be given may be changed  from time to
         time by notice delivered as provided above.

         (m) In the  event  of any  inconsistency  between  the  terms  of  this
         Agreement and any other  billings,  statements or the like form Bank to
         Borrower  in  connection  with  the  Liabilities,  the  terms  of  this
         Agreement  shall  prevail  over the terms of any other  such  billings,
         statements or the like.

         (n) This Agreement and other Loan Documents are intended by the parties
         as the final  expression of their  agreement and therefore  incorporate
         all  negotiations of the parties hereto and are the entire agreement of
         the  parties  hereto.  Borrower  acknowledges  that it is relying on no
         written or oral agreement,  representation,  warranty, or understanding
         of any kind made by Bank or any  employee  or agent of Bank  except for
         the agreements of Bank set forth herein or in the other Loan Documents.
         Except  as  expressly  set  forth in this  Agreement,  the  other  Loan
         Documents  remain  unchanged  and in full force and  effect.  Where any
         provisions of the Credit Agreement  amended by this Agreement appear in
         a promissory note tied to the Credit Agreement,  the same provisions in
         said promissory note shall be deemed likewise amended.

IN WITNESS  WHEREOF,  Bank and Borrower have  executed this  Agreement as of the
date set forth in the preamble.

EMCON,  a                                   UNION BANK OF CALIFORNIA, N.A.
California corporation

By:  \s\ Eugene M. Herson                   By:  
- - -----------------------------               ------------------------------
Title:  CEO and President                   Title:  

By:  \s\ R. Michael Momboisse
- - -----------------------------
Title:  CFO and VP Legal



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