CET ENVIRONMENTAL SERVICES INC
10-Q, 1999-11-19
HAZARDOUS WASTE MANAGEMENT
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<PAGE>   1
================================================================================


                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q

(Mark One)

(X)  QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
     OF 1934.

                For the quarterly period ended SEPTEMBER 30, 1999


                                       OR


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


                   For the transition period from ________ to________.



                         Commission File Number 1-13852


                        CET ENVIRONMENTAL SERVICES, INC.
             (Exact name of registrant as specified in its charter)


<TABLE>
<CAPTION>

                     CALIFORNIA                                         33-0285964
<S>                                                           <C>
 (State or other jurisdiction of incorporation or            (IRS Employer Identification No.)
                    organization)


    7032 SOUTH REVERE PARKWAY, ENGLEWOOD, COLORADO                          80112
       (Address of principal executive offices)                            (Zip Code)
</TABLE>


       Registrant's telephone number, including area code: (720) 875-9115



Check whether the issuer (1) filed all reports required to be filed by Section
13 or 15(d) of the Exchange Act during the past 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
                                                              ---    ---

As of November 10, 1999, 6,284,288 shares of common stock, no par value per
share, were outstanding.

================================================================================
<PAGE>   2



                                     PART I
                              FINANCIAL INFORMATION

                          ITEM 1. FINANCIAL STATEMENTS

                        CET ENVIRONMENTAL SERVICES, INC.

                            CONDENSED BALANCE SHEETS
                                 (in thousands)

                                     ASSETS

<TABLE>
<CAPTION>

                                                                                   SEPTEMBER 30,
                                                                                       1999                  DECEMBER 31,
                                                                                    (UNAUDITED)                  1998
                                                                                ------------------        ------------------

<S>                                                                             <C>                       <C>
CURRENT ASSETS:
         Cash ..........................................................        $              714        $               25

         Accounts receivable, less allowance for doubtful accounts of
         $447 and $722 in 1999 and 1998, respectively ..................                     6,917                    11,781

         Contracts in process, less allowance for doubtful accounts of
             $119 and $284 in 1999 and 1998, respectively ..............                     5,332                    10,154

         Prepaid expenses and other current assets .....................                     3,431                     4,710
                                                                                ------------------        ------------------

                  Total current assets .................................                    16,394                    26,670

EQUIPMENT AND IMPROVEMENTS, NET ........................................                     3,345                     3,480

OTHER ASSETS ...........................................................                        43                        52
                                                                                ------------------        ------------------

                                                                                $           19,782        $           30,202
                                                                                ==================        ==================
</TABLE>













     The accompanying notes are an integral part of these statements.

                                       1

<PAGE>   3



                        CET ENVIRONMENTAL SERVICES, INC.

                            CONDENSED BALANCE SHEETS
                                 (in thousands)

                      LIABILITIES AND STOCKHOLDERS' EQUITY

<TABLE>
<CAPTION>

                                                                           SEPTEMBER 30,
                                                                               1999          DECEMBER 31,
                                                                            (UNAUDITED)          1998
                                                                             ----------       ----------

<S>                                                                          <C>              <C>
         Cash overdraft ...............................................      $      681       $    1,937

         Accounts payable .............................................           6,163           11,383

         Accrued expenses .............................................           1,677            3,249

         Accrued restructuring ........................................             641               --

         Current portion of long-term debt and capital lease
             obligations ..............................................             883            1,067

         Line of credit ...............................................           3,571            1,040

         Other current liabilities ....................................              --              159
                                                                             ----------       ----------

                  Total current liabilities ...........................          13,616           18,835

DEFERRED INCOME TAXES .................................................              --               --

LONG-TERM DEBT AND CAPITAL LEASE OBLIGATIONS ..........................             283              251

COMMITMENTS AND CONTINGENT LIABILITIES ................................              --               --

STOCKHOLDERS' EQUITY

         Common stock (no par value) - authorized 20.0 million shares;
             issued and outstanding 6.3 million and 6.1 million shares
             in 1999 and 1998, respectively ...........................           8,671            8,540

         4% convertible Preferred Stock (no par value) - authorized 5.0
         ..million shares; -0- and 1,710 shares issued and outstanding
             in 1999 and 1998, respectively ...........................              --            1,589

         Paid-in capital ..............................................             105              574

         Retained earnings (deficit) ..................................          (2,893)             413
                                                                             ----------       ----------

                  Total stockholders' equity ..........................           5,883           11,116
                                                                             ----------       ----------

                                                                             $   19,782       $   30,202
                                                                             ==========       ==========
</TABLE>


     The accompanying notes are an integral part of these statements.

                                       2

<PAGE>   4



                        CET ENVIRONMENTAL SERVICES, INC.

                       CONDENSED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)
                      (in thousands, except per share data)

<TABLE>
<CAPTION>

                                                         THREE MONTHS ENDED SEPTEMBER 30,  NINE  MONTHS ENDED SEPTEMBER 30,
                                                         -------------------------------   -------------------------------
                                                              1999             1998             1999            1998
                                                         --------------    -------------   --------------    -------------

<S>                                                       <C>              <C>              <C>              <C>
PROJECT REVENUE .......................................   $      13,939    $      17,125    $      35,387    $      44,585

PROJECT COSTS
         Direct .......................................          12,426           16,260           28,201           38,787
         Indirect .....................................           1,371            1,952            5,184            5,469
                                                          -------------    -------------    -------------    -------------
                                                                 13,797           18,212           33,385           44,256

                  Gross profit ........................             142           (1,087)           2,002              329

OPERATING EXPENSES
         Selling ......................................             560              431            1,272            1,364
         General and administrative ...................             910              729            2,556            2,032
         Restructuring ................................             913               --              913               --
                                                          -------------    -------------    -------------    -------------
                                                                  2,383            1,160            4,741            3,396
                                                          -------------    -------------    -------------    -------------

                  Operating  income (loss) ............          (2,241)          (2,247)          (2,739)          (3,067)

OTHER INCOME (EXPENSE), NET ...........................            (133)            (356)            (562)            (798)
                                                          -------------    -------------    -------------    -------------

                  Income (loss) before income taxes ...          (2,374)          (2,603)          (3,301)          (3,865)

                  Provision (credit) for income taxes..              --               --               --               --
                                                          -------------    -------------    -------------    -------------

NET INCOME (LOSS) .....................................   $      (2,374)   $      (2,603)   $      (3,301)   $      (3,865)
                                                          =============    =============    =============    =============

Earnings (loss) per common share ......................   $       (0.38)   $       (0.45)   $       (0.53)   $       (0.67)
                                                          =============    =============    =============    =============
Earnings (loss) per common share-assuming dilution ....   $       (0.38)   $       (0.45)   $       (0.53)   $       (0.67)
                                                          =============    =============    =============    =============
</TABLE>










     The accompanying notes are an integral part of these statements.

                                       3

<PAGE>   5



                        CET ENVIRONMENTAL SERVICES, INC.

                       CONDENSED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)
                                 (in thousands)

<TABLE>
<CAPTION>

                                                                                             NINE MONTHS ENDED SEPTEMBER 30,
                                                                                          ---------------------------------------
                                                                                               1999                    1998
                                                                                          ----------------        ---------------

<S>                                                                                       <C>                   <C>
    CASH FLOWS FROM OPERATING ACTIVITIES:
             Net income (loss)......................................................          $   (3,301)             $  (3,865)
             Adjustments to reconcile net income to net cash provided by (used in)
                 Operating activities:
                      Depreciation and amortization.................................                  558                  1,149
                      Restructuring charge..........................................                  913                      -
                      Changes in operating assets and liabilities:
                               Decrease (Increase) in accounts receivable...........                4,864                (4,192)
                               Decrease (Increase) in contracts in process..........                4,823                  4,609
                               Decrease (Increase) in prepaid expenses and other assets               857                     38
                               (Decrease) Increase in accounts payable and
                                   accrued expenses.................................              (7,371)                (1,232)
                               Other................................................                (158)                    (3)
                                                                                          ----------------        ---------------
                               Net cash provided by (used in) operating activities..                1,185                (3,496)
                                                                                          ----------------        ---------------

    CASH FLOWS FROM INVESTING ACTIVITIES:
             Purchase of equipment..................................................                (691)                (1,251)
             Purchase of subsidiary.................................................                    -                  (691)
             Proceeds on sale of  regions...........................................                   50                      -
             Proceeds from sale of subsidiary.......................................                1,250                      -
                                                                                          ----------------        ---------------
                               Net cash provided by (used in) investing activities..                  609                (1,942)
                                                                                          ----------------        ---------------

    CASH FLOWS FROM FINANCING ACTIVITIES:
             Proceeds from issuance of subordinated debt............................                    -                  7,115
             Proceeds from private placement equity offering........................                    -                  1,890
             Payments on debt and capital lease obligations.........................                (467)                  (395)
             Proceeds from exercise of Employee Stock Options.......................                    -                     17
             Preferred Stock dividends..............................................                  (5)                      -
             Preferred Stock redemption.............................................              (1,928)                      -
             Net borrowings on line of credit.......................................                2,531                    781
             Proceeds on loans from shareholders....................................                    -                    825
             Payments on loans from shareholders....................................                    -                  (300)
             Payments on loan to related party......................................                   20                      -
             Bank overdraft.........................................................              (1,256)                      -
                                                                                          ----------------        ---------------
                      Net cash provided by (used in) financing activities...........              (1,105)                  9,933
                                                                                          ----------------        ---------------

             INCREASE (DECREASE) IN CASH............................................                  689                  4,495

             Cash at the beginning period...........................................                   25                    344
                                                                                          ----------------        ---------------

             Cash at end of period..................................................            $     714              $   4,839
                                                                                          ================        ===============
</TABLE>





     The accompanying notes are an integral part of these statements.

                                       4

<PAGE>   6



                        CET ENVIRONMENTAL SERVICES, INC.

                NOTES TO UNAUDITED CONDENSED FINANCIAL STATEMENTS
                               SEPTEMBER 30, 1999


NOTE 1. BASIS OF PRESENTATION. The accompanying unaudited financial statements
     have been prepared in accordance with generally accepted accounting
     principles for condensed interim financial statements and with the
     instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly,
     they do not include all of the information and footnotes required by
     generally accepted accounting principles for complete financial statements.
     In the opinion of management, all adjustments (consisting of normal
     recurring adjustments) considered necessary for a fair presentation have
     been included. Certain amounts in the 1998 financial statements have been
     reclassified to conform to the 1999 presentation. Management does not
     believe the effect of such reclassifications is material. Operating results
     for the quarter and nine months ended September 30, 1999 are not
     necessarily indicative of results that may be expected for the year ending
     December 31, 1999. For further information, refer to the audited financial
     statements and notes thereto included in the Company's Annual Report on
     Form 10-K for the year ended December 31, 1998.

NOTE 2. EARNINGS PER SHARE. The Financial Accounting Standards Board recently
     issued Statement of Financial Accounting Standards No. 128, Earnings Per
     Share ("SFAS 128"). SFAS 128 requires the presentation of basic earnings
     per share ("EPS") and, for companies with potentially dilutive securities
     such as convertible debt, options and warrants, diluted EPS.

     The following table sets forth the computation of basic and diluted
     earnings per share (in thousands, except per share data):

<TABLE>
<CAPTION>

                                                  Three Months Ended September 30,   Nine Months Ended September 30,
                                                       1999               1998           1999                1998
                                                   -------------    -------------    -------------    -------------

<S>                                               <C>               <C>             <C>               <C>
Numerator
    Net Income (loss)                              $      (2,374)   $      (2,603)   $      (3,301)   $      (3,865)
    Preferred Stock dividends                                 --               --               (5)              --
                                                   -------------    -------------    -------------    -------------
    Numerator for basic earnings per share -
        income available to common stockholders           (2,374)          (2,603)          (3,306)          (3,865)
Effect of dilutive securities:
    Preferred Stock dividends                                 --               --               --               --
    Numerator for diluted earnings per share -
        income available to common stockholders    $      (2,374)   $      (2,603)   $      (3,306)   $      (3,865)
        after assumed conversions                  =============    =============    =============    =============

Denominator:
    Denominator for basic earnings per share -
        weighted average shares outstanding                6,284            5,809            6,282            5,809
    Effect of dilutive securities:
        Warrants                                              --               --               --               --
        Convertible Preferred Stock                           --               --               --               --
        Stock options                                         --               --               --               --
            Dilutive potential common shares       -------------    -------------    -------------    -------------
                                                              --               --               --               --
                                                   -------------    -------------    -------------    -------------
    Denominator for diluted earnings per share -
        adjusted weighted average share and
        assumed conversion                                 6,284            5,809            6,282            5,809
                                                   =============    =============    =============    =============
Basic earnings (loss) per share                    $       (0.38)   $       (0.45)   $       (0.53)   $       (0.67)
                                                   =============    =============    =============    =============
Diluted earnings (loss) per share                  $       (0.38)   $       (0.45)   $       (0.53)   $       (0.67)
                                                   =============    =============    =============    =============
</TABLE>

                                       5
<PAGE>   7

                        CET ENVIRONMENTAL SERVICES, INC.

                     NOTES TO UNAUDITED CONDENSED FINANCIAL
                             STATEMENTS - CONTINUED



NOTE 3.   SALE OF SUBSIDIARY. Effective December 1, 1998, the Company sold all
          of the outstanding shares of its subsidiary, Water Quality Management
          Corporation ("WQM") for a sale price of $12.5 million plus an
          adjustment for net working capital of WQM at November 30, 1998. The
          Company received $11.3 million at the date of sale and in the first
          quarter of 1999 received an additional $1.2 million. As of September
          30, 1999, the Company has included in other receivables remaining
          amounts due on the sale of WQM.

NOTE 4.   LINE OF CREDIT AND LONG TERM DEBT. In May 1997, the Company entered
          into a financing agreement (the "Agreement") with National Bank of
          Canada. The Agreement originally provided for a line of credit (the
          "Credit Facility"), a term loan, and a $0.5 million stand-by letter of
          credit which in total would not exceed the lesser of $7.5 million or a
          percentage of eligible receivables (the "Maximum Loan Availability").
          Interest was originally payable under the Agreement at the Bank's
          Reference Rate plus .25%. The Agreement had an expiration date of May
          30, 1999 upon which amounts outstanding under the Credit Facility and
          term loan were due and payable.

          Pursuant to subsequent amendments to the Agreement (collectively the
          "Amendments"), the maturity date of the Agreement has been extended to
          January 6, 2000 and National Bank of Canada has agreed to advance the
          Company necessary funds on a discretionary basis. Additional terms
          under the Agreement which are amended include:

               (i) reduction of Maximum Loan Availability under the Agreement to
               the lesser of (a) $3.5 million as of November 5, 1999 (gradually
               reduced bi-monthly to zero through January 6, 2000) less required
               reductions or (b) a percentage of eligible receivables (as
               defined by the Agreement and subsequently amended) reduced by
               outstanding equipment loans, credit facility and letter of
               credit;

               (ii) extension of the maturity date of the term loans to November
               29, 1999 and exclusion from the receipt of further equipment
               loans;

               (iii) amendment of the interest rate to the Bank's Reference Rate
               plus 2% and the letter of credit fee to 3.5% per annum; and

               (iv) addition of certain covenants to include periodic reporting
               of collateral and financial projections, restricted use of
               proceeds on the Company's sale of assets and required
               reimbursement of certain professional fees incurred by the Bank.

          As of September 30, 1999, the Company's debt under its Agreement with
          National Bank of Canada consisted of $3.6 million outstanding under
          its credit facility and $0.6 million in equipment loans outstanding.
          Beginning September 1, 1999 interest is payable under the Agreement at
          Bank's Reference Rate plus 2% (10.25% at September 30, 1999).
          Additionally, the Agreement and subsequent Amendments provide for
          certain financial covenants which must be maintained. As of September
          30, 1999, the Company was not in compliance with certain of these
          covenants.

NOTE 5.   STOCKHOLDERS' EQUITY. In July 1998, the Company completed a private
          placement of 2,000 shares of 4% convertible Preferred Stock (the
          "Preferred Stock") providing net proceeds of approximately $1.9
          million. The Preferred Stock is convertible into shares of common
          stock based on the stated value of $1,000 per share of Preferred Stock
          divided by conversion price on the conversion date. The conversion
          price is equal to 85% of the lowest closing price of the common stock
          during the six days immediately preceding the conversion date, not to
          exceed $3.35. A total of 290 shares of Preferred Stock were converted
          into 317,786 shares of common stock in 1998 and a total of 140 shares
          of Preferred Stock were converted into 155,017 shares of common stock
          in 1999.


                                       6
<PAGE>   8


          Additionally, in January 1999, the Company redeemed the remaining
          shares of Preferred Stock for approximately $1.9 million. Warrants
          totaling 35,000 issued to the placement agent in the offering remain
          outstanding.

NOTE 6.   CONTINGENCIES. On August 10, 1999, the Company received a notice of
          suspension, pending further review, from the Environmental Protection
          Agency ("EPA"). The suspension resulted from EPA allegations that the
          Company engaged in intentional misconduct with respect to billing for
          services provided under various EPA contracts. Under the suspension,
          the Company was prohibited from receiving additional government
          contracts under the provisions of 48 C.F.R Subpart 9.4 of the Federal
          Acquisitions Regulations. The suspension did however allow the Company
          to continue performance on existing government contracts.

          In November 1999, following consideration of certain information
          provided by the Company to the EPA, the EPA's suspension was
          terminated and an Administrative Agreement ("Administrative
          Agreement") between the EPA and the Company was executed. Upon
          execution of the Administrative Agreement, the Company became
          immediately eligible to bid for, receive, and perform any Federal
          contract or subcontract, or participate in any assistance, loan or
          benefit without restriction. In the Administrative Agreement, the
          Company agreed to cooperate in full with further investigations into
          the EPA allegations including access to records, availability of
          Company personnel, certain reporting requirements, audit of EPA
          billing prior to submission and certain restrictions of Company assets
          without notification to the EPA. In addition, the Administrative
          Agreement provides for a financial reserve of $0.7 million. Management
          has been advised that this reserve relates to the resolution of claims
          filed against the Company related to the Company's Subcontractor
          Agreement with Environmental Chemical Corporation ("ECC") in which
          work was performed under an EPA contract (See also Item 1. Legal
          Proceedings). The financial reserve shall be established by funds
          withheld by the EPA from current and future EPA invoices, estimated
          base fee and determined award fees. During the year ended December 31,
          1998 the Company recorded sufficient reserves for the ECC's claims.

          In certain circumstances of non-compliance, the EPA has the right
          under the Administrative Agreement to terminate the agreement and
          reinstate the Company's suspension. In addition, as defined in the
          Administrative Agreement, in the case of misconduct by the Company
          during the EPA's continued investigation the EPA may immediately
          terminate EPA contracts, subcontracts or further award fees.

          EPA revenue represents approximately 71% and 66%, respectively, of the
          Company's revenue during the quarter and nine months ended September
          30, 1999. Following the notice of suspension, the Company initiated a
          Restructuring Plan which downsized its operations as a decline in
          revenues occurred. The Restructuring Plan includes the sale of certain
          regional offices, regional office downsizing, and closure of certain
          regional offices. See also Note 7 to the Company's Condensed Financial
          Statements. Following completion of the Restructuring Plan, the
          Company will maintain offices in Houston, San Antonio, Denver,
          Seattle, Tustin and Richmond, CA.

          After review of available information and consultation with its legal
          counsel, management believes that the allegations brought against the
          Company did not warrant suspension. Additionally management intends to
          cooperate in full but also vigorously defend itself in the EPA's
          further investigation into the allegations. However, there can be no
          assurance that further suspension will not occur or that the Company
          will prevail in this matter. If further suspension occurs, it will
          have a material effect on the Company's financial position, results of
          operations and liquidity.

          The Company filed a Complaint and Jury Demand against AquaSource
          Services and Technologies, Inc. ("AquaSource"), a Texas corporation,
          on July 15, 1999 for additional amounts due under the Water Quality
          Management Stock Purchase Agreement. The Company believes AquaSource
          owes $2.8 million attributable to Net Working Capital and an
          additional $0.2 million related to expense reimbursements agreed to by
          the parties. AquaSource filed a Motion to Dismiss the Complaint but
          has not yet filed an Answer to the Complaint. In view of this
          litigation, CET's management believes it has adequately provided for
          potential uncollectable amounts related to this dispute.

          On February 13, 1998, the Company filed suit in the United States
          District Court for the District of Oregon against Road Runner Oil,
          Inc. and Bernard J. Roscoe, alleging breach of contract for
          non-payment of services performed by the Company at an oil field in
          Utah. The amount of unpaid invoices, including interest and


                                       7
<PAGE>   9

          collection costs, is approximately $2.1 million. In August 1998 the
          Oregon court determined that the venue for the United States District
          Court action should be in Utah, and venue for the action was changed
          accordingly. Road Runner also filed a claim in this action against the
          Company for breach of contract seeking unspecified damages. The
          Company has also filed mechanic's liens on certain equipment at the
          site and against Road Runner's rights in the oil field. The Default
          Judgments against Road Runner have been awarded in the Tribal Court
          and Utah state court, and foreclosure proceedings and corresponding
          asset investigation are in progress. The Company has written off this
          account receivable.

          In 1998, Environmental Chemical Corporation ("ECC") filed for
          arbitration against the Company for various claims related to the
          Company's Subcontractor Agreement under an EPA contract. As discussed
          above, in November 1999, the Company executed an Administrative
          Agreement which provides for a financial reserve of $0.7 million.
          Management has been advised that this reserve relates to the
          resolution of the claims filed by ECC. The financial reserve shall be
          established by funds withheld by the EPA from current and future EPA
          invoices, estimated base fee and determined award fees.

          In 1998, the Company initiated a lawsuit in the U.S. District Court
          for the Southern District of Texas - Houston Division against PTS
          Properties, Inc., the building owner, Allchem Industries, Inc. and
          Fertilizers and Chemicals, Ltd., the chemical owners, and Aqua-Pak,
          Inc. for collection of an outstanding receivable of $0.4 million from
          performance of an emergency response in 1997 for Aqua-Pak, Inc. The
          Company has written off this account receivable. In 1999, two of the
          defendants settled with the Company for a total received by the
          Company of $0.2 million. Efforts are being pursued for settlement with
          the remaining defendant prior to court proceedings.

          The Company is party to various legal actions arising out of the
          normal course of its business. Management believes that the ultimate
          resolution of such actions, except as previously disclosed, will not
          have a material adverse effect on the Company's financial position,
          results of operations and liquidity of the Company. For a discussion
          of certain legal proceedings to which the Company is party, see Part I
          - Item 3. "Legal Proceedings" in the Company's Annual Report on Form
          10-K for the year ended December 31, 1998.

NOTE 7.   RESTRUCTURING. In August 1999, following the EPA suspension discussed
          in Note 6 "Contingencies" above, the Company initiated a restructuring
          plan ("Restructuring Plan") to reduce operating costs and gain
          efficiencies through sale, downsizing and closure of regional offices.
          In September 1999, under the Restructuring Plan, the Company sold
          substantially all its assets in the Mobile and Jackson regions for
          proceeds totaling $0.5 million. Also under the Restructuring Plan, in
          October 1999, the Company closed its regional office located in New
          Orleans and downsized its regional office in Houston. As a result, the
          Company recorded a total restructuring charge of approximately $0.9
          million, including a $0.3 million non-cash charge for loss on sale of
          regional offices, in the quarter and nine months ended September 30,
          1999.

          Included in the Restructuring Plan is a reserve for personnel
          reduction and facility reduction costs totaling $0.6 million.
          Personnel reduction costs totaling $0.2 million include severance
          payments, retention bonuses, fringe benefits and taxes related to
          employee termination. Additionally personnel reduction costs include
          incremental professional fees to develop and implement the
          Restructuring Plan. Facility reduction costs totaling $0.4 million
          consist of the cost of fulfilling or buying out existing lease
          commitments on regional facilities, related costs for equipment leases
          and facility closure expenses. Facility reduction costs resulting in
          non-cash charges consist principally of the estimated loss on
          disposition of operating assets.

          The balance of accrued restructuring at September 30, 1999 includes
          future cash expenditures of $0.4 million and non-cash expenditures of
          $0.2 million. The Company estimates that future cash expenditures
          relating to the Restructuring Plan will be made during the quarter
          ended December 31, 1999. The Company further believes it has adequate
          reserves and liquidity as of September 30, 1999 to meet future
          expenditures related to the Restructuring Plan.

NOTE 8.   SUBSEQUENT EVENTS. In October 1999, the Company entered into an asset
          purchase and assignment agreement (the "Purchase Agreement") with IT
          Corporation to sell or assign substantially all of the assets in the
          Company's Seattle Regional office. The Purchase Agreement provides for
          the assignment of the Company's remaining EPA contract dated January
          9, 1997 (the "EPA Contract") and the sale of certain assets and the
          assumption of certain


                                       8
<PAGE>   10


          liabilities and obligations used in, directly associated with and
          necessary in the performance of the EPA Contract for a sale price of
          $1.3 million. Closing of the Purchase Agreement is contingent upon the
          execution of a novation agreement by and between the Company, IT
          Corporation and the EPA consenting to the assignment of the EPA
          Contract. As stated in Note 6, EPA revenue represents approximately
          71% and 66%, respectively, of the Company's revenue during the quarter
          and nine months ended September 30, 1999. Upon novation of the EPA
          contract, CET would receive no further EPA revenue. However, there can
          be no assurance that approval of the novation will be received from
          the EPA or that the subsequent closing of the Purchase Agreement will
          occur.







                                       9
<PAGE>   11




          ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS

RESULTS OF OPERATIONS
QUARTER ENDED SEPTEMBER 30, 1999 COMPARED TO QUARTER ENDED SEPTEMBER 30, 1998

         PROJECT REVENUE. Project revenue decreased $3.2 million or 19%, from
$17.1 million in the quarter ended September 30, 1998 to $13.9 million in the
quarter ended September 30, 1999. The decrease results primarily from (i) a $2.2
million decrease in project revenue resulting from the sale of WQM in December
1998 (see also Note 3 to the Company's Condensed Financial Statements) and (ii)
a decline of $1.3 million in commercial contract revenue as a result of an
overall decrease in the Company's commercial business in 1999. Additionally, in
the quarter ended September 30, 1999 the Company experienced an increase of $1.2
million in revenue provided by EPA contracts as a result of delays in project
commencement in the second quarter of 1999. This increase in EPA revenue is
offset by a $1.0 million reduction in other government contract revenue provided
to the Company in 1998 under a Preplaced Remedial Action Contract ("PRAC") with
the US Army Corp of Engineers.

         DIRECT COSTS. Direct costs decreased $3.9 million or 24%, from $16.3
million or 95% of project revenue in the quarter ended September 30, 1998 to
$12.4 million or 89% of project revenue in the quarter ended September 30, 1999.
The improvement in direct costs as a percentage of project revenue in 1999
results primarily from cost overruns incurred in 1998 on one project in the
State of Kansas. The net effect of this project on the results for the quarter
ended September 30, 1998 was a negative margin of $0.5 million or 5.4% of
revenue.

         INDIRECT COSTS. Indirect costs decreased $0.6 million or 30%, from $2.0
million in the quarter ended September 30, 1998 to $1.4 million in the quarter
ended September 30, 1999. Additionally, indirect cost is 11% of project revenue
in the quarter ended September 30, 1998 and 10% of project revenue in the
quarter ended September 30, 1999. Therefore the decrease in indirect costs can
be attributed primarily to the decrease in project revenue described above.

         GROSS PROFIT. Gross profit improved $1.2 million, from $(1.1) million
or a gross margin of (6)% in the quarter ended September 30, 1998 to $0.1
million or a gross margin of 1% in the quarter ended September 30, 1999. As
described above, the improvement in gross margin results primarily from the
decline in project costs as a percentage of project revenue from a total of 106%
of project revenue in 1998 to 99% of project revenue in 1999.

         RESTRUCTURING. Following the EPA suspension discussed in Note 6 to the
Company's Condensed Financial Statements, the Company initiated a Restructuring
Plan to reduce operating costs and gain efficiencies through sale, downsizing
and closure of regional offices. As a result, during the quarter ended September
30, 1999 the Company recorded a restructuring charge totaling $0.9 million,
including a $0.3 million non-cash charge for loss on sale of regional offices.
See also Note 7 to the Company's Condensed Financial Statements.

         NET INCOME (LOSS). The Company's net loss improved slightly by $0.2
million, from a net loss of $2.6 million in the quarter ended September 30, 1998
to a net loss of $2.4 million in the quarter ended September 30, 1999. As
described above, the improvement in net loss is due to a $1.2 million
improvement in gross profit resulting from a reduction of project costs as a
percentage of project revenue. In addition, the improved gross profit is offset
by the $0.9 million restructuring charge recorded by the Company during the
quarter ended September 30, 1999.

NINE MONTHS ENDED SEPTEMBER 30, 1999 COMPARED TO NINE MONTHS ENDED SEPTEMBER 30,
1998

         PROJECT REVENUE. Project revenue decreased $9.2 million or 21%, from
$44.6 million in the nine months ended September 30, 1998 to $35.4 million in
the nine months ended September 30, 1999. The decrease results primarily from
(i) a $7.0 million decrease in project revenue resulting from the sale of WQM in
December 1998 (see also Note 3 to the Company's Condensed Financial Statements);
(ii) a decline of $3.2 million in commercial contract revenue as a result of an
overall decrease in the Company's commercial business in 1999; and (iii) a $2.6
million reduction of other government contract revenue as a result of revenue
provided to the Company in 1998 under a Preplaced Remedial Action Contract
("PRAC") with the US Army Corp of Engineers. These declines in project revenue
are offset by an increase of $3.6 million in revenue provided by EPA contracts.

                                       10
<PAGE>   12

         DIRECT COSTS. Direct costs decreased $10.6 million or 27%, from $38.8
million or 87% of project revenue in the nine months ended September 30, 1998 to
$28.2 million or 80% of project revenue in the nine months ended September 30,
1999. The improvement in direct costs as a percentage of project revenue in 1999
results primarily from cost overruns incurred in 1998 on projects in the State
of Kansas and the State of Washington.

         GROSS PROFIT. Gross profit improved $1.7 million, from $0.3 million or
a gross margin of 1% in the nine months ended September 30, 1998 to $2.0 million
or a gross margin of 6% in the nine months ended September 30, 1999. As
described above, the improvement in gross margin results primarily from the
decline in project costs as a percentage of project revenue from a total of 99%
of project revenue in 1998 to 94% of project revenue in 1999.

         RESTRUCTURING. Following the EPA suspension discussed in Note 6 to the
Company's Condensed Financial Statements, the Company initiated a Restructuring
Plan to reduce operating costs and gain efficiencies through sale, downsizing
and closure of regional offices. As a result, during the nine months ended
September 30, 1999 the Company recorded a restructuring charge totaling $0.9
million, including a $0.3 million non-cash charge for loss on sale of regional
offices. See also Note 7 to the Company's Condensed Financial Statements.

         NET INCOME (LOSS). The Company's net loss improved slightly by $0.6
million, from a net loss of $3.9 million in the nine months ended September 30,
1998 to a net loss of $3.3 million in the nine months ended September 30, 1999.
As described above, the improvement in net loss is due to a $1.7 million
improvement in gross profit resulting from a reduction of direct costs as a
percentage of project revenue. The improved gross profit is offset by the $0.9
million restructuring charge recorded by the Company during the nine months
ended September 30, 1999.

LIQUIDITY AND CAPITAL RESOURCES

         The Company's working capital declined $5.0 million from $7.8 million
as of December 31, 1998 to $2.8 million as of September 30, 1999. The change in
working capital results from a decrease in current assets of $10.3 million
compared to a decrease in current liabilities of $5.2 million. The decrease in
current assets results from a continued reduction in combined receivables of
$9.7 million and a decrease in other current assets of $1.3 million resulting
from the collection of $1.3 million on the sale of business. The decrease in
current liabilities results primarily from a reduction of accounts payable and
accrued liabilities of $6.8 million offset by a $0.6 million restructure reserve
recorded by the Company during the quarter and nine months ended September 30,
1999.

         The Company's financial position has declined in 1999 as a result of
the increase in the Company's current obligations and a decline in equity
resulting from losses incurred during the quarters ended June 30, 1999 and
September 30, 1999. The Company's total obligations have decreased $5.2 million
from $19.1 million at December 31, 1998 to $13.9 million at September 30, 1999.
However, the Company's shareholders equity has declined $13.1 million. The
Company has continued to reduce its combined receivables $9.7 million, from
$21.9 million or 120 days sales outstanding at December 31, 1998 to $12.2
million or 80 days sales outstanding at September 30, 1999.

         The Company's cash and cash equivalents increased $0.7 million, from
$0.03 million at December 31, 1998 to $0.7 million at September 30, 1999. The
increase in cash and cash equivalents results from cash provided to operating
activities and investing activities of $1.2 million and $0.6 million,
respectively. The cash provided by operating and investing activities is offset
by cash used in financing activities of $1.1 million. Cash provided by operating
activities of $1.2 million results primarily from a decrease in combined
receivables of $9.7 million. This increase in cash is offset by a reduction of
accounts payable and accrued expenses of $7.4 million. Cash provided by
investing activities of $0.6 million results from the receipt of $1.3 million
additional proceeds on the sale of WQM offset by a $0.7 million purchase of
assets during the nine months ended September 30, 1999. Cash used in financing
activities of $1.1 million results primarily from a payment of $1.9 million for
the redemption of the Company's preferred stock (see also Note 5 to the
Company's Condensed Financial Statements) and a reduction of $1.3 million in the
Company's cash overdraft. This use of cash in financing activities is offset of
by net borrowings of $2.5 million on the Company's line of credit.

         DEBT. As of September 30, 1999, the Company's debt obligations included
a financing agreement with National Bank of Canada consisting of $3.6 million
outstanding under its credit facility and $0.6 million in equipment loans
outstanding. The Agreement had an original maturity date of May 30, 1999 upon
which amounts outstanding under the Credit Facility and term loans became
immediately due and payable. Pursuant to Amendments to the Agreement, the
maturity date of the Agreement has been extended to January 6, 2000 and National
Bank of Canada has agreed to


                                       11
<PAGE>   13


advance the Company necessary funds on a discretionary basis. Additional
amendments include (i) gradual reduction of the Maximum Loan Availability from
$3.5 million as of November 5, 1999 to zero on January 6, 2000; (ii) extension
of the maturity date of the term loans to November 29, 1999 and exclusion from
the receipt of further equipment loans; (iii) adjustment of the interest rate to
Bank's Reference Rate plus 2% and the letter of credit fee to 3.5% per annum;
and (iv) the addition of certain covenants including periodic reporting of
collateral and financial projections and restricted use of proceeds on the
Company's sale of assets. See also Note 4 to the Company's Condensed Financial
Statements.

         The Company is seeking alternate financing sources for use in future
operating activities and strategic alternatives. However, under its current
financing agreement with National Bank of Canada, the Bank may discontinue
advancing funds on the loans at any time. Management believes that it will be
successful in obtaining alternate sources of financing and that future cash
flows from operations and funds available under these financing arrangements
will be sufficient to fund the Company's immediate needs for working capital.
However, there can be no assurance that funds available under the current
Agreement will not be discontinued or that alternate financing sources can be
successfully negotiated both of which could have a material effect on the
Company's financial position, operating activities and liquidity.

         CONTINGENCIES. On August 10, 1999, the Company received a notice of
suspension, pending further review, from the Environmental Protection Agency
("EPA"). The suspension resulted from EPA allegations that the Company engaged
in intentional misconduct with respect to billing for services provided under
various EPA contracts. Under the suspension, the Company was prohibited from
receiving additional government contracts under the provisions of 48 C.F.R
Subpart 9.4 of the Federal Acquisitions Regulations. The suspension did however
allow the Company to continue performance on existing government contracts.

         In November 1999, following consideration of certain information
provided by the Company to the EPA, the EPA's suspension was terminated and an
Administrative Agreement between the EPA and the Company was executed. Upon
execution of the Administrative Agreement, the Company became immediately
eligible to bid for, receive, and perform any Federal contract or subcontract,
or participate in any assistance, loan or benefit without restriction. In the
Administrative Agreement, the Company agreed to cooperate in full with further
investigations into the EPA allegations including access to records,
availability of Company personnel, certain reporting requirements, audit of EPA
billing prior to submission and certain restrictions of Company assets without
notification to the EPA. In addition, the Administrative Agreement provides for
a financial reserve of $0.7 million. Management has been advised that this
reserve relates to the resolution of claims filed against the Company related to
the Company's Subcontractor Agreement with Environmental Chemical Corporation
("ECC") in which work was performed under an EPA contract (See also Item 1.
Legal Proceedings). The financial reserve shall be established by funds withheld
by the EPA from current and future EPA invoices, estimated base fee and
determined award fees. During the year ended December 31, 1998 the Company
recorded sufficient reserves for the ECC's claims.

         In certain circumstances of non-compliance, the EPA has the right under
the Administrative Agreement to terminate the agreement and reinstate the
Company's suspension. In addition, as defined in the Administrative Agreement,
in the case of misconduct by the Company during the EPA's continued
investigation the EPA may immediately terminate EPA contracts, subcontracts or
further award fees.

         EPA revenue represents approximately 71% and 66%, respectively, of the
Company's revenue during the quarter and nine months ended September 30, 1999.
Following the notice of suspension, the Company initiated a Restructuring Plan
which downsized its operations as a decline in revenues occurred. The
Restructuring Plan includes the sale of certain regional offices, regional
office downsizing, and closure of certain regional offices. See also Note 7 to
the Company's Condensed Financial Statements. Following completion of the
Restructuring Plan, the Company will maintain offices in Houston, San Antonio,
Denver, Seattle, Tustin and Richmond, CA.

         After review of available information and consultation with its legal
counsel, management believes that the allegations brought against the Company
did not warrant suspension. Additionally management intends to cooperate in full
but also vigorously defend itself in the EPA's further investigation into the
allegations. However, there can be no assurance that further suspension will not
occur or that the Company will prevail in this matter. If further suspension
occurs, it will have a material effect on the Company's financial position,
results of operations and liquidity.

                                       12
<PAGE>   14

         In October 1999, the Company entered into an asset purchase and
assignment agreement (the "Purchase Agreement") with IT Corporation to sell or
assign substantially all of the assets in the Company's Seattle Regional office.
The Purchase Agreement provides for the assignment of the Company's remaining
EPA contract dated January 9, 1997 (the "EPA Contract") and the sale of certain
assets and the assumption of certain liabilities and obligations used in,
directly associated with and necessary in the performance of the EPA Contract
for a sale price of $1.3 million. Closing of the Purchase Agreement is
contingent upon the execution of a novation agreement by and between the
Company, IT Corporation and the EPA consenting to the assignment of the EPA
Contract. EPA revenue represents approximately 71% and 66%, respectively, of the
Company's revenue during the quarter and nine months ended September 30, 1999.
Upon novation of the EPA contract, CET would receive no further EPA revenue.
However, there can be no assurance that approval of the novation will be
received from the EPA or that the subsequent closing of the Purchase Agreement
will occur.

         CAPITAL COMMITMENTS. As of September 30, 1999, the Company did not have
any material commitments for capital expenditures. The Company has entered into
leases for its existing facilities with such leases expiring at various dates
through 2004. During the nine months ended September 30, 1999, capital
expenditures totaled approximately $0.7 million.

YEAR 2000 COMPLIANCE

         The Company has assessed the Year 2000 compliance problem and has
determined that it has potential for exposure regarding Year 2000 compliance in
three areas of its internal and external business activities. These areas
include (1) its own internal hardware, software systems, and the
telecommunications systems which are utilized to process and provide the
Company's accounting, operational information, and communications, (2) the
vulnerability of the Company to the failure of other companies to be Year 2000
compliant, and (3) the Year 2000 Compliance efforts of the Environmental
Protection Agency (EPA), a significant client of the Company, on its daily
tracking & billing system. The following discusses management's assessment and
solutions of those risks and the steps that are being taken to minimize them.

         Internal Hardware, Software and Telecommunications. During the past
nine months, the Company has been and is replacing or adding new equipment to
its inventory of network and systems computers. The Company has committed
approximately $350,000 for this hardware/software replacement, which has been
financed with its cash resources and with lease financing. The hardware includes
the Company's organization-wide network systems and servers, telephone systems,
and personal computer equipment. The Company tested Year 2000 compliance on the
new hardware/software as it was accepted. In addition, the Company is upgrading
its current financial application software. The Vendor has warranted that the
software is Year 2000 compliant. System design is substantially complete,
desktop computers have been tested, and the Company is in the process of
correcting any problems that are encountered. In addition, the Company reviewed
its telecommunications systems, analyzed various options, and purchased a new
central telecommunication system that provides increased functionality
associated with multiple office communication requirements. The new system is
Year 2000 compliant, and installation was completed during the second quarter
1999. The cost associated with a new telecommunications system was approximately
$33,000.

         In addition to the above activities, the Company is in the final
process of completing a full inventory and assessment of its computer hardware,
software, and equipment with embedded devices. It is anticipated that this
process will be completed by November 1999. Management intends to identify any
remaining remedial efforts that may be required to ensure its internal hardware
and software systems are Year 2000 complaint.

         Year 2000 Compliance of Other Companies. Although the Company expects
its internal systems to be Year 2000 compliant, the failure of any of its
significant vendors or clients to correct a material Year 2000 problem could
result in an interruption in certain normal business activities and operations.
To date, the Company has received various inquires from its clients and
significant vendors to provide information on Year 2000 compliance or to inform
the Company of their Year 2000 compliance. The Company has been responding to
these requests and notices. Management is not aware of any claims by any client
to provide remedial services under any warranty agreement (stated or implied)
for systems it may have provided, nor is it aware of any system that may have
been provided that may be in violation of any Year 2000 compliance. To the
extent any such claims may be made, the Company intends to address these issues
on a case by case basis.

                                       13
<PAGE>   15

         The Year 2000 problem is not limited to computer hardware and software.
It can affect a multitude of other day-to-day business activities. Any type of
equipment with a microchip that stores and processes dates can be affected. The
company is diligently identifying and addressing these issues so that its
ability to conduct business as usual is not compromised as it moves into the
21st century. The Company is identifying mission-critical business functions
that rely upon date-sensitive equipment, software, or hardware. The Company is
requesting Year 2000 verification in these areas by performance testing or
certifications that use various types of testing for compliance, i.e., century
byte, hardware clock rollover, hardware clock leap year, BIOS rollover, BIOS
leap year, power-on rollover, and power-on leap year. Due to the general
uncertainty inherent in the Year 2000 problem, the Company at this time is
unable to completely determine if any adverse impact will be experienced by the
Company from other companies' Year 2000 failures.

         EPA Year 2000 Compliance. The Company has been working with the EPA on
their efforts to bring their daily tracking & billing system (RCMS) to Year 2000
compliance. The EPA utilizes a DOS-based RCMS which, based on EPA
representation, will be Year 2000 compliant.

         While the Company may be vulnerable to other companies' Year 2000
compliance failures, the Company believes that it is well positioned to minimize
the Year 2000 impact. The Company believes that with the implementation of its
new hardware, software, up-grades to our office equipment, and completion of its
assessment of vendors and clients, the possibility of significant interruptions
of normal operations has been greatly reduced.




                                       14
<PAGE>   16




                                     PART II
                                OTHER INFORMATION


ITEM 1.  LEGAL PROCEEDINGS

         On August 10, 1999, the Company received a notice of suspension,
         pending further review, from the Environmental Protection Agency
         ("EPA"). The suspension resulted from EPA allegations that the Company
         engaged in intentional misconduct with respect to billing for services
         provided under various EPA contracts. Under the suspension, the Company
         was prohibited from receiving additional government contracts under the
         provisions of 48 C.F.R Subpart 9.4 of the Federal Acquisitions
         Regulations. The suspension did however allow the Company to continue
         performance on existing government contracts.

         In November 1999, following consideration of certain information
         provided by the Company to the EPA, the EPA's suspension was terminated
         and an Administrative Agreement between the EPA and the Company was
         executed. Upon execution of the Administrative Agreement, the Company
         became immediately eligible to bid for, receive, and perform any
         Federal contract or subcontract, or participate in any assistance, loan
         or benefit without restriction. In certain circumstances of
         non-compliance, the EPA has the right under the Administrative
         Agreement to terminate the agreement and reinstate the Company's
         suspension. In addition, as defined in the Administrative Agreement, in
         the case of misconduct by the Company during the EPA's continued
         investigation the EPA may immediately terminate EPA contracts,
         subcontracts or further award fees. EPA revenue represents
         approximately 71% and 66%, respectively, of the Company's revenue
         during the quarter and nine months ended September 30, 1999. Following
         the notice of suspension, the Company initiated a Restructuring Plan
         which downsized its operations as a decline in revenues occurred.

         After review of available information and consultation with its legal
         counsel, management believes that the allegations brought against the
         Company did not warrant suspension. Additionally management intends to
         cooperate in full but also vigorously defend itself in the EPA's
         further investigation into the allegations. However, there can be no
         assurance that further suspension will not occur or that the Company
         will prevail in this matter. If further suspension occurs, it will have
         a material effect on the Company's financial position, results of
         operations and liquidity. See also Note 6 and 7 to the Company's
         Condensed Financial Statements.

         The Company filed a Complaint and Jury Demand against AquaSource
         Services and Technologies, Inc. ("AquaSource"), a Texas corporation, on
         July 15, 1999 for additional amounts due under the Water Quality
         Management Stock Purchase Agreement. The Company believes AquaSource
         owes $2.8 million attributable to Net Working Capital and an additional
         $238,000 related to expense reimbursements agreed to by the parties.
         AquaSource filed a Motion to Dismiss the Complaint but has not yet
         filed an Answer to the Complaint. See also Note 3 to the Company's
         Condensed Financial Statements.

         On February 13, 1998, the Company filed suit in the United States
         District Court for the District of Oregon against Road Runner Oil, Inc.
         and Bernard J. Roscoe, alleging breach of contract for non-payment of
         services performed by the Company at an oil field in Utah. The amount
         of unpaid invoices, including interest and collection costs, is
         approximately $2.1 million. In August 1998 the Oregon court determined
         that the venue for the United States District Court action should be in
         Utah, and venue for the action was changed accordingly. Road Runner
         also filed a claim in this action against the Company for breach of
         contract seeking unspecified damages. The Company has also filed
         mechanic's liens on certain equipment at the site and against Road
         Runner's rights in the oil field. The Default Judgments against Road
         Runner have been awarded in the Tribal Court and Utah state court, and
         foreclosure proceedings and corresponding asset investigation are in
         progress. The Company has written off this account receivable.

         In 1998, Environmental Chemical Corporation ("ECC") filed for
         arbitration against the Company for various claims related to the
         Company's Subcontractor Agreement under an EPA contract. As discussed



                                       15
<PAGE>   17


         above, in November 1999, the Company executed an Administrative
         Agreement which provides for a financial reserve of $0.7 million.
         Management has been advised that this reserve relates to the resolution
         of the claims filed by ECC. The financial reserve shall be established
         by funds withheld by the EPA from current and future EPA invoices,
         estimated base fee and determined award fees. See also Note 6 to the
         Company's Condensed Financial Statements.

         In 1998, the Company initiated a lawsuit in the U.S. District Court for
         the Southern District of Texas - Houston Division against PTS
         Properties, Inc., the building owner, Allchem Industries, Inc. and
         Fertilizers and Chemicals, Ltd., the chemical owners, and Aqua-Pak,
         Inc. for collection of an outstanding receivable of $0.4 million from
         performance of an emergency response in 1997 for Aqua-Pak, Inc. In
         1999, two of the defendants settled with the Company for a total
         received by the Company of $0.2 million. Efforts are being pursued for
         settlement with the remaining defendant prior to court proceedings.

         The Company is party to various legal actions arising out of the normal
         course of its business. Management believes that the ultimate
         resolution of such actions, except as previously disclosed, will not
         have a material adverse effect on the Company's financial position,
         results of operations and liquidity of the Company. For a discussion of
         certain legal proceedings to which the Company is party, see Part I -
         Item 3. "Legal Proceedings" in the Company's Annual Report on Form 10-K
         for the year ended December 31, 1998.


ITEM 2.  CHANGES IN SECURITIES

         None.


ITEM 3.  DEFAULTS UPON SENIOR SECURITIES

         None.


ITEM 5.  OTHER INFORMATION

         None.


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

(a)      Exhibits

         10.1* Administrative Agreement between United States Environmental
               Protection Agency ("EPA") and the Registrant.

         10.2* Seventh Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

         10.3* Ninth Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

         10.4* Eleventh Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

                                       16
<PAGE>   18

         10.5* Thirteenth Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

         10.6* Fourteenth Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

         27*   Financial Data Schedule


               *Filed Herewith Electronically


(b)      Reports on Form 8-K

         None.



                                       17
<PAGE>   19




                                   SIGNATURES







In accordance with the requirements of the Exchange Act, the registrant caused
this report to be signed on its behalf by the undersigned, thereunto duly
authorized.






                                  CET ENVIRONMENTAL SERVICES, INC.






Dated:  November 18, 1999         By:     /s/ Steven H. Davis
                                          --------------------------------------
                                          Steven H. Davis, President and
                                          Chief Executive Officer



                                  By:      /s/ Dale W. Bleck
                                           -------------------------------------
                                           Dale W. Bleck, Interim Chief
                                           Financial Officer



                                       18
<PAGE>   20

                                 EXHIBIT INDEX
<TABLE>
<CAPTION>

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

<S>            <C>
 10.1*         Administrative Agreement between United States Environmental
               Protection Agency ("EPA") and the Registrant.

 10.2*         Seventh Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

 10.3*         Ninth Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

 10.4*         Eleventh Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

 10.5*         Thirteenth Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

 10.6*         Fourteenth Amendment to Loan and Security Agreement and Loan
               Documents between National Bank of Canada and the Registrant.

 27*           Financial Data Schedule
</TABLE>


               *Filed Herewith Electronically



<PAGE>   1
                            ADMINISTRATIVE AGREEMENT

                                     between
               UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA)
                                       and
                 CET ENVIRONMENTAL SERVICES, INCORPORATED (CET)

                             EPA Case No. 99-0077-00

                                    PURPOSE

     This agreement is being made between the EPA and CET in order to provide
EPA with certain assurances during the course of a Federal investigation
concerning CET's claims for costs associated with the performance of services
on various EPA contracts.

     This agreement describes the conditions under which EPA will terminate its
suspension of CET, and what assurances CET will provide to protect the
Government's interests on an interim basis, pending development and definition
of the investigation(s) and/or audits that form the bases for EPA's August 10,
1999 suspension of CET.

     It is understood by EPA and CET that this agreement is not a final
resolution of any issue involved in this matter. Nor does this constitute a
resolution of matters that may be pending before any other government agency. At
any time if the information available to the Debarring Official, or the
circumstances, change, the Debarring Official may reinstate CET's suspension.

     Nothing in this agreement is to be construed as a finding by the Debarring
Official or an admission by CET that any amounts in question under CET's
contracts with EPA are due the Agency, or that CET has engaged in misconduct for
which criminal prosecution, civil recovery, or administrative debarment action
is warranted. This agreement recognizes that the allegations that constitute the
bases for EPA's suspension are subject to further definition and factual
development during the ongoing investigation, or are yet to be resolved by audit
resolution. By signing and abiding by this agreement, CET wishes to
affirmatively demonstrate its willingness to cooperate with the audits and
investigation, and to secure important Government business interests pending
resolution of the matters so as to obviate EPA's need to impose suspension to
protect those interests.


<PAGE>   2

                                       2


                                    RECITALS

     On July 30, 1999, the EPA Suspension and Debarment Division (SDD) filed a
request for suspension of CET alleging that CET had engaged in intentional
misconduct with respect to billing EPA for services provided under various EPA
contracts. The SDD made other allegations with respect to CET's billing and
accounting system, and CET's lack of cooperation with Federal authorities
during the course of the audits and investigation.

     On August 10, 1999, the EPA Debarring Official suspended CET, having made
an initial finding that the information presented by the SDD constituted
adequate evidence that a cause for debarment may exist and that immediate action
was necessary to protect procurement and assistance interests of the Federal
Government.

     The United States Attorney's Office for the Western District of Washington
requested that the Debarring Official not engage in fact-finding as to disputed
material facts pursuant to 40 CFR Section 32.412(b)(l)(ii).

     On September 13, 1999, CET's President and Controller personally appeared
with counsel and presented matters in opposition to the suspension before the
EPA Debarring Official at proceedings conducted by EPA Hearing Officer, Mr.
Stanley Stocker-Edwards.

     As part of its presentation in opposition to the suspension, CET provided
relevant information concerning the SDD's allegations, and made certain
assurances(1) and other offers to protect the Government's interests. After
considering all information in the suspension record available at this time, the
Debarring Official has determined that it is appropriate to terminate CET's
suspension upon CET's willingness to adhere to its offers and cooperate fully
with all Federal and other authorities investigating the matter(2), and to take
other actions described in this agreement.

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

     (1) As part of its presentation, CET stated that it would not use the
services of its former Vice President, Mr. John Hopkins, as either a CET
employee or contract consultant on any Government contract until allegations
concerning his conduct in the matter have been resolved and addressed.

     (2) During final submissions, SDD counsel raised questions concerning
certain filings made by CET to the Internal Revenue Service (IRS) and the
Securities and Exchange Commission (SEC). Although the Debarring Official finds
no evidence in the record to conclude impropriety on the part of CET, CET has
agreed to cooperate fully with the IRS and SEC in any inquiry those agencies may
conduct concerning those issues.


<PAGE>   3
                                       3



                                     TERMS

1.   COOPERATION. CET agrees to cooperate fully with any Federal, State or other
     government officials investigating, auditing, or otherwise reconciling
     claims involved in this matter. Cooperation includes providing immediate
     access to CET facilities, documents or other information (regardless of how
     such information was recorded, stored, reported or translated), at
     reasonable times and in reasonable business settings so as to assist
     government officials in ascertaining CET's costs, accounting, billing or
     other business policies and practices related to the issues forming the
     bases of CET's August 10th suspension. This provision includes records
     related to appeals under the disputes clause, or settlement of any claims
     under the contract(s) concerned, whether or not those claims have been
     finally resolved.

2.   ACCESS TO RECORDS. CET agrees to provide immediate access to, records and
     information it has, controls, or is responsible for, without the
     government having to issue subpoenas or other compulsory process to obtain
     information and data. CET will ensure that any documents or other forms of
     information requested by a government office or official are delivered and
     received in accordance with the request. CET understands that this includes
     giving the government access to its software for government officials to
     obtain, inspect and interpret data within CET's computer files, if legally
     permissible.

3.   EMPLOYEE INTERVIEWS. CET agrees to provide the government with unrestricted
     access to its current employees for interviews, and will not impede access
     to former employees. Nothing in this obligation shall be deemed to require
     CET to take any action beyond that of providing reasonable access to
     employees, and CET will not advise, direct or otherwise influence any
     current or former employee with respect to any statement made, or to be
     made, to the government, except as may be legally appropriate in order to
     provide legal representation to CET.

4.   SUBCONTRACTS. While under the obligations of this agreement, CET agrees to
     include the obligations in paragraphs 1-3 above, in any of its future
     subcontracts that are cost-reimbursement, incentive, time and materials, or
     labor-hour type contracts (or any combination of these) that require data
     for submission into the financial and technical progress reports.

5.   FINANCIAL RESERVE. CET agrees that OAM may establish a reserve amount of
     SEVEN HUNDRED THOUSAND DOLLARS ($700,000.00), pending completion of the
     investigation and/or resolution of the audits concerning this matter. Such
     amount shall consist of FIVE HUNDRED THOUSAND DOLLARS ($500,000.00) from
     current and future EPA invoices that are otherwise due and payable but have
     not yet been paid and a FIFTEEN PERCENT (15%) withholding of the estimated
     base fee and determined award fee. Should the AM Director determine the
     current invoices plus the 15 percent withholding

<PAGE>   4

                                        4



     to be insufficient to cover the total reserve amount under this paragraph,
     the OAM Director must notify CET of any deficiency, and CET agrees to
     retain in its own books of account a set-aside of such sums from its
     earnings and profits, sale of assets, other income realized, restructure of
     its debts, or deferred payment of dividends or compensation, in order to
     fund the reserve balance as security against potential claims arising from
     the investigation and/or audits that formed the bases for CET's suspension.
     If at any time during the investigation and/or pending resolution of the
     audits in this matter, the OAM Director determines that a greater or lesser
     reserve is necessary, the OAM Director, after consulting with the Debarring
     Official, shall notify CET and the reserve amount under this paragraph
     shall be adjusted accordingly. If CET is required to retain a set-aside to
     meet an adjusted total reserve under this paragraph, and if that total
     reserve is subsequently decreased, in determining any balance due CET, such
     balance shall be satisfied first from the CET set-aside. Any remaining
     balance due CET may be paid to CET with interest due according to
     applicable rates as determined by the U.S. Department of the Treasury. In
     no event shall any amount retained by OAM as part of the reserve under this
     paragraph, or held by CET as a set-aside to meet the adjusted total
     reserve, be regarded as a failure by the Government to comply with the
     requirements of the Prompt Payment Act, and interest penalties will not
     accrue on any part of the total reserve retained by OAM or set-aside by
     CET.

6.   DAILY REPORTS. CET agrees to comply with any directive or other guidance
     issued by EPA after the effective date of this agreement to clarify CET's
     obligations to submit estimated or actual daily usage and cost information
     on any Emergency Response contract.

7.   SUBMISSION OF INVOICES. CET shall generate invoices only from its job cost
     accounting system. CET shall submit all EPA contract invoices for audit
     review and approval by the cognizant Defense Contract Audit Agency office
     prior to submission for payment by EPA. The terms of such reviews are
     subject to specifications as defined by the EPA Financial Administrative
     Contracting Officer responsible for negotiation of CET's indirect cost
     rates.

8.   ASSURANCE AGAINST DIVERSION OF INCOME/ASSETS. From the date of this
     agreement until relieved of this obligation by the Debarring Official, CET
     shall not transfer income or assets of the corporation, delay the
     recognition or realization of any income, incur unnecessary debt to any
     officer or director, or make other payment of dividends or pay excessive
     compensation to any officer, director, manager or their relatives with the
     intent to place corporate assets or income beyond the reach of the Federal
     Government to satisfy potential claims that may arise from the
     investigation or audits that are the subject of EPA's suspension. Any
     such action that results in the inability of the EPA to satisfy its
     contract claims for reimbursement of losses against CET's assets and
     income may be regarded by the EPA and CET as an ultra vires act for which
     EPA or the United States may seek contribution from CET's corporate
     officers and directors. CET shall notify the EPA Debarring Official in
     the event it plans to reorganize itself, transfer or sell any of its
     assets, or increase compensation or fringe benefit payments to its
     officers or directors, declare unusual dividends, or take other action that
     will significantly change the value of assets available to satisfy
     potential claims under this


<PAGE>   5
                                       5



     paragraph. CET shall inform any potential purchaser of its assets, or any
     portion of its assets, of the existence of this agreement, and that any
     such sale/purchase is subject to the terms of this agreement.

9.   TERMINATION OF FUTURE CONTRACTS, SUBCONTRACTS OR OTHER AWARDS. If EPA
     determines that any serious misconduct occurs within CET in its accounting
     and/or submission of invoices, or services provided to any Federal agency
     or other person during performance of duties under a Government-funded
     contract or assistance award during the existence of this agreement, CET's
     contract, subcontract or award may be immediately terminated for cause, and
     without cost to the Government, its contractor, or any assistance
     participant.

10.  FAILURE TO ADHERE TO THIS AGREEMENT. If CET fails to comply with its
     obligations under this agreement in any material respect, the EPA Debarring
     Official may unilaterally terminate the agreement and reinstate CET's
     suspension upon the original cause(s) for action, and for material breach
     of the provisions of this agreement. In such event, the EPA Debarring
     Official will provide CET with appropriate notice and an opportunity to
     contest the action in accordance with 40 CFR Part 32.

11.  TERMINATION OF CET'S SUSPENSION. Upon execution of this agreement by the
     EPA Debarring Official and CET's representative(s), EPA shall immediately
     terminate CET's suspension and notify the General Services Administration
     (GSA) to remove CET's name, address and entry from the GSA List of Parties
     Excluded from Federal Procurement and Non-procurement Programs. Upon
     execution of this agreement by the parties, CET shall be eligible to bid
     for, receive, and perform any Federal contract or subcontract, or
     participate in any assistance, loan or benefit without restriction, except
     as may be required by law or regulation, this agreement, or the terms of a
     particular contract, subcontract or nonprocurement award or transaction.

12.  RELEASE. CET agrees to release and hold harmless any agency of the United
     States, or officials acting on its behalf in their official or personal
     capacity, from any damages and claims CET may otherwise believe it is
     entitled to pursue as a result of its suspension by EPA.

13.  MODIFICATION OR TERMINATION OF THIS AGREEMENT. The terms of this agreement
     may be modified by CET and the EPA Debarring Official at any time in
     accordance with information developed during the Government's
     investigation and/or audits. If at any time, CET desires to conclude the
     administrative suspension/debarment matters as part of a comprehensive
     settlement, CET may apply to the Debarring Official for termination,
     modification or other adjustment of this agreement as a final settlement in
     accordance with a comprehensive resolution under 40 CFR Section 32.315.

14.  COMPLIANCE REVIEW. At any time during this agreement, EPA may review CET's
     compliance with its obligations under this agreement. Such review may
     include an

<PAGE>   6
                                       6


     examination of CET's books and records, employee interviews, or submission
     of documentation as may be appropriate. In the event a compliance review
     under this paragraph is to be conducted which will necessitate a site visit
     by EPA employees, the EPA Debarring Official shall notify CET of EPA's
     intent to conduct a review at least five (5) working days prior to such
     review.

15.  INCORPORATION BY REFERENCE. CET agrees that OAM may unilaterally modify EPA
     Contract No. 68-W7-0016 to incorporate by reference any or all of the
     requirements contained in this agreement as it deems appropriate to the
     administration of that contract.

- ------------------------------------         --------------------------------
Robert F. Meunier                            Date
Debarring Official


- ------------------------------------         --------------------------------
Steven Davis, President                      Date
CET Environmental Services, Inc.


     We, the undersigned officers and directors of CET, hereby sign this
agreement as our acknowledgment of our obligations contained in paragraph 8 of
this agreement. (Add others as appropriate)


- ------------------------------------         --------------------------------
Name and Title                               Date


- ------------------------------------         --------------------------------
Name and Title                               Date


- ------------------------------------         --------------------------------
Name and Title                               Date


- ------------------------------------         --------------------------------
Name and Title                               Date




<PAGE>   7
                                       7


     examination of CET's books and records, employee interviews, or submission
     of documentation as may be appropriate. In the event a compliance review
     under this paragraph is to be conducted which will necessitate a site visit
     by EPA employees, the EPA Debarring Official shall notify CET of EPA's
     intent to conduct a review at least five (5) working days prior to such
     review.

15.  INCORPORATION BY REFERENCE. CET agrees that OAM may unilaterally modify EPA
     Contract No. 68-W7-0016 to incorporate by reference any or all of the
     requirements contained in this agreement as it deems appropriate to the
     administration of that contract.


- --------------------------------------       --------------------------------
Robert F. Meunier                            Date
Debarring Official


/s/ STEVEN H. DAVIS                          November 4, 1999
- --------------------------------------       --------------------------------
Steven H. Davis, President                   Date
CET Environmental Services, Inc.

     We, the undersigned officers and directors of CET, hereby sign this
agreement as our acknowledgment of our obligations contained in paragraph 8 of
this agreement.


/s/ CRAIG C. BARTO                           November 4, 1999
- --------------------------------------       --------------------------------
Craig C. Barto, Director                     Date


/s/ DALE W. BLECK                            November 4, 1999
- --------------------------------------       --------------------------------
Dale W. Bleck, Interim Chief Financial       Date
   Officer, Assistant Secretary


/s/ DOUGLAS W. COTTON                        November 4, 1999
- --------------------------------------       --------------------------------
Douglas W. Cotton, Executive Vice            Date
   President, Director

/s/ STEVEN H. DAVIS                          November 4, 1999
- --------------------------------------       --------------------------------
Steven H. Davis, President, Chief            Date
   Executive Officer, Secretary,
   Director

<PAGE>   8
                                       8


/s/ GEORGE PRATT                             November 4, 1999
- --------------------------------------       --------------------------------
George Pratt, Director                       Date


/s/ ROBERT A. TAYLOR                         November 4, 1999
- --------------------------------------       --------------------------------
Robert A. Taylor, Director                   Date



<PAGE>   1
                SEVENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT
                               AND LOAN DOCUMENTS

THIS SEVENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT AND LOAN DOCUMENTS (this
"Amendment"), dated as of August 13, 1999, is between NATIONAL BANK OF CANADA, a
Canadian chartered bank ("Lender"), and CET ENVIRONMENTAL SERVICES, INC., a
California corporation ("Borrower").

                                    Recitals

A.      Lender and Borrower entered into a Loan and Security Agreement dated May
        29, 1997, as amended by an Amendment to Loan and Security Agreement and
        Loan Documents dated as of August 29, 1997 and as further amended by a
        Second Amendment to Loan and Security Agreement and Loan Documents dated
        as of April 10, 1998 and as further amended by a Third Amendment to Loan
        and Security Agreement and Loan Documents dated as of January 8, 1999,
        and as further amended by a Fourth Amendment to Loan and Security
        Agreement and Loan Documents dated as of May 21, 1999, and as further
        amended by a Fifth Amendment to Loan and Security Agreement and Loan
        Documents dated as of June 18, 1999 and as further amended by a Sixth
        Amendment to Loan and Security Agreement and Loan Documents dated as of
        July 30, 1999 (as amended, the "Loan Agreement"), providing for the
        Revolving Loans, Equipment Loans, a Term Loan and Letters of Credit in
        the aggregate amended maximum available amount not to exceed $7,500,000.
        Defined terms used herein and not defined herein shall have the meaning
        set forth in the Loan Agreement.

B.      The Loans are secured by the Collateral.

C.      Pursuant to a Notice of Suspension (the "Notice of Suspension") dated
        August 10, 1999 from the United States Environmental Protection Agency
        (the "EPA"), the EPA suspended Borrower under 40 C.F.R. Part 32.

D.      The Borrower and Lender desire to enter into this Amendment in order to,
        among other things, (i) reduce the Maximum Loan Availability from
        $7,500,000 to $6,000,000, and (ii) extend the Maturity Date from August
        13, 1999 to August 20, 1999.

                                    Agreement

IN CONSIDERATION of the foregoing and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Lender and Borrower
agree as follows:

1.      Extension of Maturity Date. In order to extend the Maturity Date of the
        Loans, Section 1(t) of the Loan Agreement is hereby revised by
        substituting the date "August 20, 1999" for the date "August 13, 1999"
        in Subsection (i) in the second line of the Section.



                                      - 1 -

<PAGE>   2


2.       Maximum Loan Availability. In order to decrease the Maximum Loan
         Availability, Section 1(u) of the Loan Agreement is revised by
         replacing the phrase "Seven Million Five Hundred Thousand Dollars
         ($7,500,000) with the phrase "Six Million Dollars ($6,000,000)".

3.       Advances. Without limiting in any way Lender's discretion or other
         rights under the Loan Agreement, Borrower acknowledges and agrees that
         advances to Borrower under the Loan Agreement are discretionary, and
         Borrower understands and agrees that Lender may, in Lender's sole and
         absolute discretion, discontinue the advancing of funds under Section 4
         of the Loan Agreement at any time. Lender's advancing funds on the
         Loans from or after the date hereof shall not act as a waiver of
         Lender's right to discontinue making advances at any time.

4.       Loan Documents.

         a.       Lender and Borrower agree that any and all notes or other
                  documents executed in connection with the Loans (collectively,
                  the "Loan Documents") are hereby amended to reflect the
                  amendments set forth herein and that no further amendments to
                  any Loan Documents are required to reflect the foregoing.

         b.       All references in any document to the Loan Agreement or any
                  other Loan Document shall refer to the Loan Agreement or such
                  Loan Document as amended pursuant to this Amendment.

5.       Representations and Warranties. Borrower hereby certifies to the Lender
         that as of the date of this Amendment (taking into consideration the
         transactions contemplated by this Amendment), all of Borrower's
         representations and warranties contained in the Loan Agreement and all
         Loan Documents are true, accurate and complete in all material
         respects, and no Event of Default (other than an Event of Default which
         may arise out of the Notice of Suspension) or event that with notice or
         the passage of time or both would constitute an Event of Default has
         occurred under the Loan Agreement or any Loan Document. Without
         limiting the generality of the foregoing, Borrower represents and
         warrants that the execution and delivery of this Amendment has been
         authorized by all necessary action on the part of Borrower, that the
         person executing this Amendment on behalf of Borrower is duly
         authorized to do so and that this Amendment constitutes the legal,
         valid, binding and enforceable obligation of Borrower.

6.       Additional Documents. Borrower shall execute and deliver to Lender at
         any time and from time to time such additional amendments to the Loan
         Agreement and the Loan Documents as the Lender may request to confirm
         and carry out the transactions contemplated hereby or to confirm,
         correct and clarify the security for the Loan.



                                      - 2 -

<PAGE>   3



7.       Continuation of the Loan Agreement, Etc. Except as specified in this
         Amendment, the provisions of the Loan Agreement and the Loan Documents
         shall remain in full force and effect, and if there is a conflict
         between the terms of this Amendment and those of the Loan Agreement or
         the Loan Documents, the terms of this Amendment shall control.

8.       Miscellaneous.

         a.       This Amendment shall be governed by and construed under the
                  laws of the State of Colorado and shall be binding upon and
                  inure to the benefit of the parties hereto and their
                  successors and permissible assigns.

         b.       This Amendment may be executed in two or more counterparts,
                  each of which shall be deemed an original and all of which
                  together shall constitute one instrument.

         c.       This Amendment and all documents to be executed and delivered
                  hereunder may be delivered in the form of a facsimile copy,
                  subsequently confirmed by delivery of the originally executed
                  document.

         d.       This Amendment constitutes the entire agreement between
                  Borrower and the Lender concerning the subject matter of this
                  Amendment. This Amendment may not be amended or modified
                  orally, but only by a written agreement executed by Borrower
                  and the Lender and designated as an amendment or modification
                  of the Loan Agreement as amended by this Amendment.

         e.       Execution of this Amendment is not intended to and shall not
                  constitute a waiver by the Lender of any Event of Default or
                  event that with notice or the passage of time, or both, would
                  constitute an Event of Default, including, without limitation,
                  any Event of Default which may arise as a result of the Notice
                  of Suspension.



                                      - 3 -

<PAGE>   4

         EXECUTED as of the date first set forth above.

                                                BORROWER:

                                                CET ENVIRONMENTAL SERVICES,
                                                INC., a California corporation


                                                By:
                                                   -----------------------------
                                                Name:
                                                     ---------------------------
                                                Title:
                                                      --------------------------

                                                LENDER:

                                                NATIONAL BANK OF CANADA, a
                                                Canadian chartered bank


                                                By:
                                                   -----------------------------
                                                    Andrew M. Conneen, Jr.
                                                    Vice President



                                      - 4 -



<PAGE>   1
                 NINTH AMENDMENT TO LOAN AND SECURITY AGREEMENT
                               AND LOAN DOCUMENTS


THIS NINTH AMENDMENT TO LOAN AND SECURITY AGREEMENT AND LOAN DOCUMENTS (this
"Amendment"), dated as of August 27, 1999, is between NATIONAL BANK OF CANADA, a
Canadian chartered bank ("Lender"), and CET ENVIRONMENTAL SERVICES, INC., a
California corporation ("Borrower").

                                    Recitals

A.       Lender and Borrower entered into a Loan and Security Agreement dated
         May 29, 1997, as amended by an Amendment to Loan and Security Agreement
         and Loan Documents dated as of August 29, 1997 and as further amended
         by a Second Amendment to Loan and Security Agreement and Loan Documents
         dated as of April 10, 1998 and as further amended by a Third Amendment
         to Loan and Security Agreement and Loan Documents dated as of January
         8, 1999, and as further amended by a Fourth Amendment to Loan and
         Security Agreement and Loan Documents dated as of May 21, 1999, and as
         further amended by a Fifth Amendment to Loan and Security Agreement and
         Loan Documents dated as of June 18, 1999 and as further amended by a
         Sixth Amendment to Loan and Security Agreement and Loan Documents dated
         as of July 30, 1999 and as further amended by a Seventh Amendment to
         Loan and Security Agreement and Loan Documents dated as of August 13,
         1999, and as further amended by an Eighth Amendment to Loan and
         Security Agreement and Loan Documents dated as of August 20, 1999 (as
         amended, the "Loan Agreement"), providing for the Revolving Loans,
         Equipment Loans, a Term Loan and Letters of Credit in the aggregate
         amended maximum available amount not to exceed $6,000,000. Defined
         terms used herein and not defined herein shall have the meaning set
         forth in the Loan Agreement.

B.       The Loans are secured by the Collateral.

C.       Pursuant to a Notice of Suspension (the "Notice of Suspension") dated
         August 10, 1999 from the United States Environmental Protection Agency
         (the "EPA"), the EPA suspended Borrower under 40 C.F.R. Part 32.

D.       The Borrower and Lender desire to enter into this Amendment in order to
         (i) extend the Maturity Date from August 27, 1999 to September 3, 1999,
         and (ii) amend the interest rate on all Loans.

                                    Agreement

IN CONSIDERATION of the foregoing and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Lender and Borrower
agree as follows:



                                      - 1 -

<PAGE>   2

1.       Extension of Maturity Date. In order to extend the Maturity Date of the
         Loans, Section 1(t) of the Loan Agreement is hereby revised by
         substituting the date "September 3, 1999" for the date "August 27,
         1999" in Subsection (i) in the second line of the Section.

2.       Interest Rate. From and after September 1, 1999, all Loans shall bear
         interest at a rate equal to the Reference Rate plus 2.00%.

3.       Advances. Without limiting in any way Lender's discretion or other
         rights under the Loan Agreement, Borrower acknowledges and agrees that
         advances to Borrower under the Loan Agreement are discretionary, and
         Borrower understands and agrees that Lender may, in Lender's sole and
         absolute discretion, discontinue the advancing of funds under Section 4
         of the Loan Agreement at any time. Lender's advancing funds on the
         Loans from or after the date hereof shall not act as a waiver of
         Lender's right to discontinue making advances at any time. Without
         limiting in any way the foregoing, Borrower understands and agrees that
         in no event shall the total amount outstanding under all Loans exceed
         $6,000,000.

4.       Loan Documents.

         a.       Lender and Borrower agree that any and all notes or other
                  documents executed in connection with the Loans (collectively,
                  the "Loan Documents") are hereby amended to reflect the
                  amendments set forth herein and that no further amendments to
                  any Loan Documents are required to reflect the foregoing.

         b.       All references in any document to the Loan Agreement or any
                  other Loan Document shall refer to the Loan Agreement or such
                  Loan Document as amended pursuant to this Amendment.

5.       Representations and Warranties. Borrower hereby certifies to the Lender
         that as of the date of this Amendment (taking into consideration the
         transactions contemplated by this Amendment), all of Borrower's
         representations and warranties contained in the Loan Agreement and all
         Loan Documents are true, accurate and complete in all material
         respects, and no Event of Default (other than an Event of Default which
         may arise out of the Notice of Suspension) or event that with notice or
         the passage of time or both would constitute an Event of Default has
         occurred under the Loan Agreement or any Loan Document. Without
         limiting the generality of the foregoing, Borrower represents and
         warrants that the execution and delivery of this Amendment has been
         authorized by all necessary action on the part of Borrower, that the
         person executing this Amendment on behalf of Borrower is duly
         authorized to do so and that this Amendment constitutes the legal,
         valid, binding and enforceable obligation of Borrower.

6.       Additional Documents. Borrower shall execute and deliver to Lender at
         any time and from time to time such additional amendments to the Loan
         Agreement and the Loan



                                      - 2 -

<PAGE>   3

         Documents as the Lender may request to confirm and carry out the
         transactions contemplated hereby or to confirm, correct and clarify the
         security for the Loan.

7.       Continuation of the Loan Agreement, Etc. Except as specified in this
         Amendment, the provisions of the Loan Agreement and the Loan Documents
         (as previously amended) shall remain in full force and effect, and if
         there is a conflict between the terms of this Amendment and those of
         the Loan Agreement or the Loan Documents (as previously amended), the
         terms of this Amendment shall control.

8.       Miscellaneous.

         a.       This Amendment shall be governed by and construed under the
                  laws of the State of Colorado and shall be binding upon and
                  inure to the benefit of the parties hereto and their
                  successors and permissible assigns.

         b.       This Amendment may be executed in two or more counterparts,
                  each of which shall be deemed an original and all of which
                  together shall constitute one instrument.

         c.       This Amendment and all documents to be executed and delivered
                  hereunder may be delivered in the form of a facsimile copy,
                  subsequently confirmed by delivery of the originally executed
                  document.

         d.       This Amendment constitutes the entire agreement between
                  Borrower and the Lender concerning the subject matter of this
                  Amendment. This Amendment may not be amended or modified
                  orally, but only by a written agreement executed by Borrower
                  and the Lender and designated as an amendment or modification
                  of the Loan Agreement as amended by this Amendment.

         e.       Execution of this Amendment is not intended to and shall not
                  constitute a waiver by the Lender of any Event of Default or
                  event that with notice or the passage of time, or both, would
                  constitute an Event of Default, including, without limitation,
                  any Event of Default which may arise as a result of the Notice
                  of Suspension.



                                      - 3 -

<PAGE>   4

         EXECUTED as of the date first set forth above.

                                               BORROWER:

                                               CET ENVIRONMENTAL SERVICES,
                                               INC., a California corporation


                                               By:
                                                  ------------------------------
                                               Name:
                                                    ----------------------------
                                               Title:
                                                     ---------------------------


                                               LENDER:

                                               NATIONAL BANK OF CANADA, a
                                               Canadian chartered bank


                                               By:
                                                  ------------------------------
                                                   Andrew M. Conneen, Jr.
                                                   Vice President



                                      - 4 -



<PAGE>   1
                ELEVENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT
                               AND LOAN DOCUMENTS


THIS ELEVENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT AND LOAN DOCUMENTS (this
"Amendment"), dated as of September 10, 1999, is between NATIONAL BANK OF
CANADA, a Canadian chartered bank ("Lender"), and CET ENVIRONMENTAL SERVICES,
INC., a California corporation ("Borrower").

                                    Recitals

A.       Lender and Borrower entered into a Loan and Security Agreement dated
         May 29, 1997, as amended by an Amendment to Loan and Security Agreement
         and Loan Documents dated as of August 29, 1997 and as further amended
         by a Second Amendment to Loan and Security Agreement and Loan Documents
         dated as of April 10, 1998 and as further amended by a Third Amendment
         to Loan and Security Agreement and Loan Documents dated as of January
         8, 1999, and as further amended by a Fourth Amendment to Loan and
         Security Agreement and Loan Documents dated as of May 21, 1999, and as
         further amended by a Fifth Amendment to Loan and Security Agreement and
         Loan Documents dated as of June 18, 1999 and as further amended by a
         Sixth Amendment to Loan and Security Agreement and Loan Documents dated
         as of July 30, 1999 and as further amended by a Seventh Amendment to
         Loan and Security Agreement and Loan Documents dated as of August 13,
         1999, and as further amended by an Eighth Amendment to Loan and
         Security Agreement and Loan Documents dated as of August 20, 1999, and
         as further amended by a Ninth Amendment to Loan and Security Agreement
         and Loan Documents dated as of August 27, 1999, and as further amended
         by a Tenth Amendment to Loan and Security Agreement and Loan Documents
         dated as of September 3, 1999 (as amended, the "Loan Agreement").
         Defined terms used herein and not defined herein shall have the meaning
         set forth in the Loan Agreement.

B.       The Loans are secured by the Collateral.

C.       Pursuant to a Notice of Suspension (the "Notice of Suspension") dated
         August 10, 1999 from the United States Environmental Protection Agency
         (the "EPA"), the EPA suspended Borrower under 40 C.F.R. Part 32.

D.       The Borrower and Lender desire to enter into this Amendment in order
         to, among other things, (i) reduce the Maximum Loan Availability from
         $6,000,000 to $5,500,000, and (ii) extend the Maturity Date from
         September 10, 1999 to September 17, 1999.

                                    Agreement

IN CONSIDERATION of the foregoing and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Lender and Borrower
agree as follows:



                                      - 1 -

<PAGE>   2

1.       Extension of Maturity Date. In order to extend the Maturity Date of the
         Loans, Section 1(t) of the Loan Agreement is hereby revised by
         substituting the date "September 17, 1999" for the date "September 10,
         1999" in Subsection (i) in the second line of the Section.

2.       Equipment Loans. The parties hereby agree that Borrower shall no longer
         have the right to any Equipment Loans pursuant to paragraph 2(b) of the
         Loan Agreement.

3.       Collateral Reports Section 9(a) of the Loan Agreement is hereby amended
         by amending and restating the first sentence of such section to read as
         follows:

                  Borrower shall deliver to Lender, on a weekly basis, on or
                  before Tuesday of each week for the prior week, a collateral
                  report (the "Collateral Report") describing the aging of the
                  Accounts, all Eligible Accounts created or acquired by
                  Borrower subsequent to the immediately preceding Collateral
                  Report, information in connection with any Account which has
                  ceased to be an Eligible Account since the most recent
                  Collateral Report, and information on all amounts collected by
                  Borrower on Accounts subsequent to the immediately preceding
                  Collateral Report; provided that Lender reserves the right to
                  require such report on a more frequent basis at any time
                  requested by Lender.

4.       Maximum Loan Availability. In order to decrease the Maximum Loan
         Availability, Section 1(u) of the Loan Agreement is revised effective
         as of September 15, 1999 by replacing the phrase "Six Million Dollars
         ($6,000,000)" with the phrase "Five Million Five Hundred Thousand
         Dollars ($5,500,000)".

5.       Letter of Credit Fee. From and after September 15, 1999, the letter of
         credit fee set forth in Section 3(b) of the Loan Agreement shall be
         equal to three and one-half percent (3.5%) per annum (computed on the
         basis of a year of three hundred sixty (360) days for the actual number
         of days elapsed) of the average undrawn face amount of the Letters of
         Credit, payable monthly in arrears within 10 days after the end of each
         month.

6.       Advances. Without limiting in any way Lender's discretion or other
         rights under the Loan Agreement, Borrower acknowledges and agrees that
         advances to Borrower under the Loan Agreement are discretionary, and
         Borrower understands and agrees that Lender may, in Lender's sole and
         absolute discretion, discontinue the advancing of funds under Section 4
         of the Loan Agreement at any time. Lender's advancing funds on the
         Loans from or after the date hereof shall not act as a waiver of
         Lender's right to discontinue making advances at any time.

7.       Additional Reporting Requirements. In addition to all reporting
         requirements set forth in the Loan Agreement (as amended by this
         Amendment), Borrower covenants and agrees that Borrower shall provide
         to Lender no later than September 16, 1999, a projected



                                      - 2 -

<PAGE>   3

         income statement and balance sheet of Borrower for each of the months
         of September, October, November, and December, 1999.

8.       Loan Documents.

         a.       Lender and Borrower agree that any and all notes or other
                  documents executed in connection with the Loans (collectively,
                  the "Loan Documents") are hereby amended to reflect the
                  amendments set forth herein and that no further amendments to
                  any Loan Documents are required to reflect the foregoing.

         b.       All references in any document to the Loan Agreement or any
                  other Loan Document shall refer to the Loan Agreement or such
                  Loan Document as amended pursuant to this Amendment.

9.       Representations and Warranties. Borrower hereby certifies to the Lender
         that as of the date of this Amendment (taking into consideration the
         transactions contemplated by this Amendment), all of Borrower's
         representations and warranties contained in the Loan Agreement and all
         Loan Documents are true, accurate and complete in all material
         respects, and no Event of Default (other than an Event of Default which
         may arise out of the Notice of Suspension) or event that with notice or
         the passage of time or both would constitute an Event of Default has
         occurred under the Loan Agreement or any Loan Document. Without
         limiting the generality of the foregoing, Borrower represents and
         warrants that the execution and delivery of this Amendment has been
         authorized by all necessary action on the part of Borrower, that the
         person executing this Amendment on behalf of Borrower is duly
         authorized to do so and that this Amendment constitutes the legal,
         valid, binding and enforceable obligation of Borrower.

10.      Additional Documents. Borrower shall execute and deliver to Lender at
         any time and from time to time such additional amendments to the Loan
         Agreement and the Loan Documents as the Lender may request to confirm
         and carry out the transactions contemplated hereby or to confirm,
         correct and clarify the security for the Loan.

11.      Continuation of the Loan Agreement, Etc. Except as specified in this
         Amendment, the provisions of the Loan Agreement and the Loan Documents
         (as previously amended) shall remain in full force and effect, and if
         there is a conflict between the terms of this Amendment and those of
         the Loan Agreement or the Loan Documents (as previously amended), the
         terms of this Amendment shall control.

12.      Miscellaneous.

         a.       This Amendment shall be governed by and construed under the
                  laws of the State of Colorado and shall be binding upon and
                  inure to the benefit of the parties hereto and their
                  successors and permissible assigns.



                                      - 3 -

<PAGE>   4

         b.       This Amendment may be executed in two or more counterparts,
                  each of which shall be deemed an original and all of which
                  together shall constitute one instrument.

         c.       This Amendment and all documents to be executed and delivered
                  hereunder may be delivered in the form of a facsimile copy,
                  subsequently confirmed by delivery of the originally executed
                  document.

         d.       This Amendment constitutes the entire agreement between
                  Borrower and the Lender concerning the subject matter of this
                  Amendment. This Amendment may not be amended or modified
                  orally, but only by a written agreement executed by Borrower
                  and the Lender and designated as an amendment or modification
                  of the Loan Agreement as amended by this Amendment.

         e.       Execution of this Amendment is not intended to and shall not
                  constitute a waiver by the Lender of any Event of Default or
                  event that with notice or the passage of time, or both, would
                  constitute an Event of Default, including, without limitation,
                  any Event of Default which may arise as a result of the Notice
                  of Suspension.

         EXECUTED as of the date first set forth above.

                                                  BORROWER:

                                                  CET ENVIRONMENTAL SERVICES,
                                                  INC., a California corporation


                                                  By:
                                                     ---------------------------
                                                  Name:
                                                       -------------------------
                                                  Title:
                                                        ------------------------

                                                  LENDER:

                                                  NATIONAL BANK OF CANADA, a
                                                  Canadian chartered bank


                                                  By:
                                                     ---------------------------
                                                       Andrew M. Conneen, Jr.
                                                       Vice President



                                      - 4 -




<PAGE>   1


               THIRTEENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT
                               AND LOAN DOCUMENTS



     THIS THIRTEENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT AND LOAN DOCUMENTS
     (this "Amendment"), dated as of October 4,1999, is between NATIONAL BANK OF
     CANADA, a Canadian chartered bank ("Lender"), and CET ENVIRONMENTAL
     SERVICES, INC., a California corporation ("Borrower").

                                    Recitals

     A.   Lender and Borrower entered into a Loan and Security Agreement dated
          May 29, 1997, as amended by the first through twelfth amendments (as
          amended, the "Loan Agreement"). Defined terms used herein and not
          defined herein shall have the meaning set forth in the Loan
          Agreement.

     B.   The Loans are secured by the Collateral.

     C.   Pursuant to a letter from Lender to Borrower dated September 21, 1999,
          Lender notified Borrower of numerous Events of Default under the Loan
          Agreement, and in connection therewith, Lender provided to Borrower a
          forbearance letter dated September 23, 1999 (the "Forbearance
          Letter").

     D.   The Borrower and Lender desire to enter into this Amendment in order
          to make certain other revisions to the Loan Agreement.

                                   Agreement

     IN CONSIDERATION of the foregoing and other good and valuable
     consideration, the receipt and sufficiency of which are hereby
     acknowledged, Lender and Borrower agree as follows:

     1.   Maximum Loan Availability. Without in any way limiting the rights of
          the Lender under this Agreement or the Forbearance Letter, or the sole
          discretion of Lender to elect whether or not to make Advances,
          Section 1(u) of the Loan Agreement is hereby amended by replacing the
          phrase "Five Million Five Hundred Thousand Dollars ($5,500,000)" as
          follows:

          a.   From the date hereof up to and including October 21, 1999, with
               the phrase "Four Million Five Hundred Thousand Dollars
               (S4,500,000)";

          b.   From October 22, 1999 through October 31, 1999, with the phrase
               "Four Million Dollars ($4,000,000)"; and


<PAGE>   2




          c.   From November 1, 1999 up to and including the Maturity Date, with
               the phrase "Three Million Five Hundred Thousand Dollars
               ($3,500,000)".

          On October 22, 1999, Borrower shall pay to Lender the amount by which
          the outstanding amount of the Revolving Loan plus the aggregate
          undrawn face-amount of all Letters of Credit exceeds the lesser of
          S4,000,000 or the Revolving Loan Availability.

          On November 1, 1999, Borrower shall pay to Lender the amount by which
          the outstanding amount of the Revolving Loan plus the aggregate
          undrawn face amount of all Letters of Credit exceeds the lesser of
          $3,500,000 or the Revolving Loan Availability.

     2.   Eligible Accounts. The definition of "Eligible Accounts" is hereby
          amended by amending and restating Section 1(i) in its entirety to
          read as follows:

          (i)  "Eligible Accounts" shall mean those Accounts of Borrower which
               are unpaid less than ninety (90) days from invoice date, and
               which Lender, in its sole discretion determines to be eligible.
               Without limiting Lender's discretion, unless otherwise agreed by
               Lender, the following Accounts of Borrower are not Eligible
               Accounts: (i) all Accounts owing by a single Account Debtor,
               including currently scheduled Accounts, if twenty-five percent
               (25%) or more of the balance owing by such Account Debtor to
               Borrower is unpaid more than ninety (90) days from the invoice
               date or is ineligible under clauses (iv) or (v) below; (ii)
               Accounts with respect to which the Account Debtor is an officer,
               director, employee, Subsidiary or Affiliate of Borrower; (iii)
               Accounts with respect to which the Account Debtor is not a
               resident of the United States unless the Account Debtor has
               supplied Borrower with an irrevocable letter of credit, in form
               and substance satisfactory to Lender, issued by a U.S. financial
               institution satisfactory to Lender, to cover the full amount of
               such Account, and such letter of credit is assigned and delivered
               to Lender; (iv) Accounts in dispute or with respect to which the
               Account Debtor asserted a counterclaim or has asserted a right of
               setoff; (v) Accounts with respect to which the prospect of
               payment or performance by the Account Debtor is or will be
               impaired, as determined by Lender in the exercise of its sole
               discretion; (vi) Accounts with respect to which Lender does not
               have a first and valid fully perfected security interest; (vii)
               Accounts with respect to which the Account Debtor is the subject
               of bankruptcy or a similar insolvency proceeding or has made an
               assignment for the benefit of creditors or whose assets have been
               conveyed to a receiver or trustee; (viii) Accounts with respect
               to which the Account Debtor's obligation to pay the Account is
               conditional upon the Account Debtor's approval or is otherwise
               subject to any prepurchase obligation or return right, as with
               sales made on a bill-and-hold, guaranteed sale, sale-or-return,
               sale on approval or consignment basis; (ix) Accounts to the
               extent that the Account Debtor's indebtedness to Borrower exceeds
               a credit limit determined by Lender in Lender's discretion; (x)
               Accounts with respect to which the Account Debtor is




                                      -2-
<PAGE>   3




               located in New Jersey or Minnesota unless Borrower (a) with
               respect to each such state, has received a certificate of
               authority to do business and is in good standing in such state,
               or (b) has filed a Notice of Business Activities Report with the
               New Jersey Division of Taxation or the Minnesota Department of
               Revenue, as applicable, for the then current year; (xi) Accounts
               which arise out of sales not made in the ordinary course of
               Borrower's business, including, without limitation, any Accounts
               arising out of the sale of any assets of Borrower other than
               Inventory; (xii) Accounts with respect to which the Account
               Debtor has returned to Borrower any portion of the Inventory the
               sale of which gave rise to such Accounts; (xiii) Accounts with
               respect to which any document or agreement executed or delivered
               in connection therewith, or any procedure used in connection with
               any such document or agreement, fails in any material respect to
               comply with the requirements of applicable law; (xiv) Accounts
               which arise out of sales generated by or under the control or
               supervision of, or services performed by or under the control or
               supervision of offices of Borrower which have been sold or
               closed, if such Accounts remain outstanding 45 days after such
               office's closing date, even if such Accounts would otherwise be
               deemed eligible; and (xv) bonded accounts.

3.   Eligible Unbilled Accounts. The definition of "Eligible Unbilled Accounts"
     in Section 1(j) is hereby deleted in its entirety. In addition, any
     reference to Eligible Unbilled Accounts in the Loan Agreement is hereby
     deleted in its entirety.

4.   Revolving Loan Availability. The definition of "Revolving Loan
     Availability" is hereby amended by amending and restating Section 1(cc) in
     its entirety to read as follows:

     (cc) Revolving Loan Availability" shall mean at any time, up to eighty
          percent (80%) of the face amount (less maximum discounts, credits and
          allowances which may be taken by or granted to Account Debtors in
          connection therewith) then outstanding under existing Eligible
          Accounts at such time, less such reserves as Lender in its sole
          discretion elects to establish.

          Lender may at any time and from time to time in its sole discretion
          change the advance percentage as set forth above.

5.   Fees and Charges. Section 3(d) of the Loan Agreement is hereby amended and
     restated in its entirety to read as follows:

     (d)

          Borrower shall pay to Lender all audit fees, travel and other
          out-of-pocket expenses, in connection with any audit of Borrower
          conducted by Lender or any agent of Lender, including, without
          limitation, those fees required to continually test Accounts for
          eligibility and prepare the cash flow schedules and any other reports
          required by the Lender.



                                      -3-
<PAGE>   4


6.   Additional Covenants of Borrower. Section 12 of the Loan Agreement is
     hereby amended by amending and restating Section 12(q) in its entirety and
     by adding a new Section 12(v) and 12(w) to read as follows:

     (q)  Borrower shall reimburse Lender for all costs and expenses, including,
          without limitation, (1) legal expenses and attorney's fees, incurred
          by Lender in connection with documentation and consummation of this
          transaction and any other transactions between Borrower and Lender,
          including, without limitation, Uniform Commercial Code and other
          public record searches, lien filings, Federal Express or other similar
          express or messenger delivery, (2) appraisal costs, surveys, title
          insurance and environmental audit or review costs, (3) all costs
          incurred by Lender from accountants, auditors, consultants, or other
          financial advisors of Lender in connection with the Loans, Lender's
          administration of the Loans or the Collateral (whether before, during
          or after an Event of Default), any default or any workout of the
          Loans, and (4) in seeking to administer, collect, protect or enforce
          any rights in or to the Collateral or incurred by Lender in seeking to
          collect any Liabilities and to administer, participate, assign and/or
          enforce any of Lender's rights under this Agreement and the Other
          Agreements. All such costs, expenses and charges shall constitute
          Revolving Loans hereunder, shall be payable by Borrower to Lender on
          demand, and, until paid, shall bear interest at the rate then
          applicable to Loans hereunder.

     (v)  Immediately upon the receipt of any proceeds derived from the sale of
          any assets of Borrower other than Inventory, Borrower shall pay such
          proceeds to Lender to be applied first to any unpaid principal or
          interest (in such order as Lender shall determine) on the Tern Loan,
          and, upon full satisfaction of the Tern Loan, to be applied to the
          Revolving Loan as permanent reductions to the Maximum Loan
          Availability. Such reductions to the Maximum Loan Availability shall
          be in addition to the scheduled reductions described in Section 1(u)
          above.

     (w)  The reporting requirements set forth in Sections 4(a), 4(b) and 4(e)
          of the Forbearance Letter are hereinafter incorporated by reference
          into the Loan Agreement.

7.   Loan Documents.

     a.   Lender and Borrower agree that any and all notes or other documents
          executed in connection with the Loans (collectively, the "Loan
          Documents") are hereby amended to reflect the amendments set forth
          herein and that no further amendments to any Loan Documents are
          required to reflect the foregoing.



                                      -4-
<PAGE>   5

     b.   All references in any document to the Loan Agreement or any other Loan
          Document shall refer to the Loan Agreement or such Loan Document as
          amended pursuant to this Amendment.

8.   Representations and Warranties. Borrower hereby certifies to the Lender
     that as of the date of this Amendment (taking into consideration the
     transactions contemplated by this Amendment), all of Borrower's
     representations and warranties contained in the Loan Agreement and all Loan
     Documents are true, accurate and complete in all material respects, and no
     Event of Default (other than as set forth in the Forbearance Letter) or
     event that with notice or the passage of time or both would constitute an
     Event of Default has occurred under the Loan Agreement or any Loan
     Document. Without limiting the generality of the foregoing, Borrower
     represents and warrants that the execution and delivery of this Amendment
     has been authorized by all necessary action on the part of Borrower, that
     the person executing this Amendment on behalf of Borrower is duly
     authorized to do so and that this Amendment constitutes the legal, valid,
     binding and enforceable obligation of Borrower.

9.   Additional Documents. Borrower shall execute and deliver to Lender at any
     time and from time to time such additional amendments to the Loan Agreement
     and the Loan Documents as the Lender may request to confirm and carry out
     the transactions contemplated hereby or to confirm, correct and clarify the
     security for the Loan.

10.  Continuation of the Loan Agreement, Etc. Except as specified in this
     Amendment, the provisions of the Loan Agreement and the Loan Documents (as
     previously amended) shall remain in full force and effect, and if there is
     a conflict between the terms of this Amendment and those of the Loan
     Agreement or the Loan Documents (as previously amended), the terms of this
     Amendment shall control.

11.  Miscellaneous.

     a.   This Amendment shall be governed by and construed under the laws of
          the State of Colorado and shall be binding upon and inure to the
          benefit of the parties hereto and their successors and permissible
          assigns.

     b.   This Amendment may be executed in two or more counterparts, each of
          which shall be deemed an original and all of which together shall
          constitute one instrument.

     c.   This Amendment and all documents to be executed and delivered
          hereunder may be delivered in the form of a facsimile copy,
          subsequently confirmed by delivery of the originally executed
          document.



                                      -5-
<PAGE>   6

     d.   This Amendment constitutes the entire agreement between Borrower and
          the Lender concerning the subject matter of this Amendment. This
          Amendment may not be amended or modified orally, but only by a written
          agreement executed by Borrower and the Lender and designated as an
          amendment or modification of the Loan Agreement as amended by this
          Amendment.

     e.   Execution of this Amendment is not intended to and shall not
          constitute a waiver by the Lender of any Event of Default or event
          that with notice or the passage of time, or both, would constitute an
          Event of Default, including, without limitation, any Events of Default
          set forth in the Forbearance Letter.

     EXECUTED as of the date first set forth above.


                                        BORROWER:


                                        CET ENVIRONMENTAL SERVICES,
                                        INC., a California corporation

                                        By: /s/ DALE W. BLECK
                                            -------------------------------
                                        Name: Dale W. Bleck
                                             ------------------------------
                                        Title: CFO
                                              -----------------------------

                                        LENDER:

                                        NATIONAL BANK OF CANADA, a
                                        Canadian chartered bank

                                        By:
                                            -------------------------------
                                                  Alan C. Balk
                                                  Vice President




                                      -6-

<PAGE>   1
               FOURTEENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT
                               AND LOAN DOCUMENTS

THIS FOURTEENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT AND LOAN DOCUMENTS
(this "Amendment"), dated as of November 5, 1999, is between NATIONAL BANK OF
CANADA, a Canadian chartered bank ("Lender"), and CET ENVIRONMENTAL SERVICES,
INC., a California corporation ("Borrower").

                                    Recitals

A.       Lender and Borrower entered into a Loan and Security Agreement dated
         May 29, 1997, as amended by the first through thirteenth amendments (as
         amended, the "Loan Agreement"). Defined terms used herein and not
         defined herein shall have the meaning set forth in the Loan Agreement.

B.       The Loans are secured by the Collateral.

C.       Pursuant to a letter from Lender to Borrower dated September 21, 1999,
         Lender notified Borrower of numerous Events of Default under the Loan
         Agreement, and in connection therewith, Lender provided to Borrower a
         forbearance letter dated September 23, 1999 as amended by a letter
         dated October 5, 1999 from Lender to Borrower (as amended, the
         "Forbearance Letter").

D.       The Borrower and Lender desire to enter into this Amendment in order to
         make certain other revisions to the Loan Agreement.

                                    Agreement

IN CONSIDERATION of the foregoing and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Lender and Borrower
agree as follows:

1.       Maximum Loan Availability. Without in any way limiting the rights of
         the Lender under this Agreement or the Forbearance Letter, or the sole
         discretion of Lender to elect whether or not to make Advances, Section
         1(u) of the Loan Agreement is hereby amended and restated in its
         entirety to read as follows:

                  "Maximum Loan Availability" shall mean (1) the lesser of (a)
                  $3,500,000 minus the Required Reductions or (b) the Revolving
                  Loan Availability minus (2) the sum of (a) the outstanding
                  principal amount of all Equipment Loans, (b) the aggregate
                  undrawn face amount of all Letters of Credit and (c) the
                  aggregate amount of all Revolver Reductions.



                                      - 1 -

<PAGE>   2


                  On each date that the Maximum Loan Availability is determined,
                  Borrower shall pay to Lender the amount by which the
                  outstanding amount of the Revolving Loan plus the aggregate
                  undrawn face amount of all Letters of Credits exceeds the
                  revised Maximum Loan Availability.

2.       Additional Definitions. Section 1 of the Loan Agreement is hereby
         further amended by adding a new section 1(hh), 1(ii), and 1(jj) to read
         as follows:

                  1(hh)    "Required Reductions" shall mean the greater of (a)
                           the Set Reduction Amount, or (b) the Collection
                           Reduction Amount.

                  1(ii)    "Set Reduction Amount" shall mean the following
                           amounts for the periods opposite such figures:

<TABLE>
<S>                                                  <C>
- ---------------------------------------------------------------
     November 5, 1999 through                                $0
     November 14, 1999
- ---------------------------------------------------------------
     November 15, 1999 through                         $500,000
     November 28, 1999
- ---------------------------------------------------------------
     November 29, 1999 through                       $1,250,000
     December 11, 1999
- ---------------------------------------------------------------
     December 12, 1999 through                       $2,000,000
     December 25, 1999
- ---------------------------------------------------------------
     December 26, 1999 through                       $2,750,000
     January 5, 2000
- ---------------------------------------------------------------
</TABLE>

                  1(jj)    "Collection Reduction Amount" shall mean an amount
                           equal to 15% of the amount of Accounts collected or
                           payments received on Accounts from November 5, 1999
                           up to and including the business day prior to the
                           date such amount is determined.

3.       Collateral Reports Section 9(a) of the Loan Agreement is hereby amended
         by amending and restating the first sentence of such section to read as
         follows:

                  Borrower shall deliver to Lender, (a) from November 5, 1999
                  through November 30, 1999, on a bi-weekly basis, on Tuesday
                  and Friday of each week, for the period from the prior
                  reporting date to the day prior to the current reporting date,
                  and (b) from December 1, 1999 and thereafter, on a daily
                  basis, for the prior day, a collateral report (the "Collateral
                  Report") describing the aging of the Accounts, all Eligible
                  Accounts created or acquired by Borrower subsequent to



                                      - 2 -

<PAGE>   3

                  the immediately preceding Collateral Report, information in
                  connection with any Account which has ceased to be an Eligible
                  Account since the most recent Collateral Report, and
                  information on all amounts collected by Borrower on Accounts
                  subsequent to the immediately preceding Collateral Report;
                  provided that Lender reserves the right to require such report
                  on a more frequent basis at any time requested by Lender.

4.       Additional Covenants of Borrower. Section 12 of the Loan Agreement is
         hereby amended by amending and restating Section 12(v) in its entirety
         to read as follows:

         (v)      Immediately upon the receipt of any proceeds derived from the
                  sale of any assets of Borrower other than Inventory, Borrower
                  shall pay such proceeds to Lender to be applied first to any
                  unpaid principal or interest (in such order as Lender shall
                  determine) on the Term Loan, and, upon full satisfaction of
                  the Term Loan, to be applied to the Revolving Loan as
                  permanent reductions ("Revolver Reductions") to the Maximum
                  Loan Availability. Such Revolver Reductions shall be in
                  addition to the other scheduled reductions described in
                  Section 1(u) above. Notwithstanding the foregoing, Borrower
                  shall pay all outstanding amounts due under the Term Loan on
                  or before November 22, 1999, regardless of whether Borrower
                  receives adequate proceeds from the sale of assets to do so.

5.       Loan Documents.

         a.       Lender and Borrower agree that any and all notes or other
                  documents executed in connection with the Loans (collectively,
                  the "Loan Documents") are hereby amended to reflect the
                  amendments set forth herein and that no further amendments to
                  any Loan Documents are required to reflect the foregoing.

         b.       All references in any document to the Loan Agreement or any
                  other Loan Document shall refer to the Loan Agreement or such
                  Loan Document as amended pursuant to this Amendment.

6.       Representations and Warranties. Borrower hereby certifies to the Lender
         that as of the date of this Amendment (taking into consideration the
         transactions contemplated by this Amendment), all of Borrower's
         representations and warranties contained in the Loan Agreement and all
         Loan Documents are true, accurate and complete in all material
         respects, and no Event of Default (other than as set forth in the
         Forbearance Letter) or event that with notice or the passage of time or
         both would constitute an Event of Default has occurred under the Loan
         Agreement or any Loan Document. Without limiting the generality of the
         foregoing, Borrower represents and warrants that the execution and
         delivery of this Amendment has been authorized by all necessary action
         on the part of Borrower, that the person executing this Amendment on
         behalf of Borrower is duly



                                      - 3 -

<PAGE>   4


         authorized to do so and that this Amendment constitutes the legal,
         valid, binding and enforceable obligation of Borrower.

7.       Additional Documents. Borrower shall execute and deliver to Lender at
         any time and from time to time such additional amendments to the Loan
         Agreement and the Loan Documents as the Lender may request to confirm
         and carry out the transactions contemplated hereby or to confirm,
         correct and clarify the security for the Loan.

8.       Continuation of the Loan Agreement, Etc. Except as specified in this
         Amendment, the provisions of the Loan Agreement and the Loan Documents
         (as previously amended) shall remain in full force and effect, and if
         there is a conflict between the terms of this Amendment and those of
         the Loan Agreement or the Loan Documents (as previously amended), the
         terms of this Amendment shall control.

9.       Miscellaneous.

         a.       This Amendment shall be governed by and construed under the
                  laws of the State of Colorado and shall be binding upon and
                  inure to the benefit of the parties hereto and their
                  successors and permissible assigns.

         b.       This Amendment may be executed in two or more counterparts,
                  each of which shall be deemed an original and all of which
                  together shall constitute one instrument.

         c.       This Amendment and all documents to be executed and delivered
                  hereunder may be delivered in the form of a facsimile copy,
                  subsequently confirmed by delivery of the originally executed
                  document.

         d.       This Amendment constitutes the entire agreement between
                  Borrower and the Lender concerning the subject matter of this
                  Amendment. This Amendment may not be amended or modified
                  orally, but only by a written agreement executed by Borrower
                  and the Lender and designated as an amendment or modification
                  of the Loan Agreement as amended by this Amendment.

         e.       Execution of this Amendment is not intended to and shall not
                  constitute a waiver by the Lender of any Event of Default or
                  event that with notice or the passage of time, or both, would
                  constitute an Event of Default, including, without limitation,
                  any Events of Default set forth in the Forbearance Letter.



                                      - 4 -

<PAGE>   5


         EXECUTED as of the date first set forth above.

                                                BORROWER:

                                                CET ENVIRONMENTAL SERVICES,
                                                INC., a California corporation


                                                By:
                                                   -----------------------------
                                                Name:
                                                     ---------------------------
                                                Title:
                                                      --------------------------


                                                LENDER:

                                                NATIONAL BANK OF CANADA, a
                                                Canadian chartered bank


                                                By:
                                                   -----------------------------
                                                     Allen C. Balk
                                                     Vice President


                                                By:
                                                   -----------------------------
                                                     Name:
                                                          ----------------------
                                                     Title:
                                                           ---------------------



                                      - 5 -





<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED FINANCIAL STATEMENTS OF THE COMPANY FOR THE NINE MONTHS ENDED
SEPTEMBER 30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                             714
<SECURITIES>                                         0
<RECEIVABLES>                                   12,815
<ALLOWANCES>                                       566
<INVENTORY>                                        182
<CURRENT-ASSETS>                                16,394
<PP&E>                                           6,147
<DEPRECIATION>                                   2,802
<TOTAL-ASSETS>                                  19,782
<CURRENT-LIABILITIES>                           13,616
<BONDS>                                            283
                                0
                                          0
<COMMON>                                         8,671
<OTHER-SE>                                         105
<TOTAL-LIABILITY-AND-EQUITY>                    19,782
<SALES>                                              0
<TOTAL-REVENUES>                                35,387
<CGS>                                           33,385
<TOTAL-COSTS>                                   33,385
<OTHER-EXPENSES>                                 4,741
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 387
<INCOME-PRETAX>                                (3,301)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (3,301)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (3,301)
<EPS-BASIC>                                   $ (0.53)
<EPS-DILUTED>                                 $ (0.53)


</TABLE>


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