AIR & WATER TECHNOLOGIES CORP
S-1/A, 1997-12-23
ENGINEERING SERVICES
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<PAGE>
 
   
AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 23, 1997     
                                                   
                                                REGISTRATION NO. 333-39115     
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                                ---------------
                                
                             AMENDMENT NO. 1     
                                       
                                    TO     
                                   FORM S-1
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
                                ---------------
                     AIR & WATER TECHNOLOGIES CORPORATION
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

       DELAWARE                      7311                      13-3418759
   (STATE OR OTHER        (PRIMARY STANDARD INDUSTRIAL      (I.R.S. EMPLOYER
   JURISDICTION OF        CLASSIFICATION CODE NUMBER)       IDENTIFICATION
   INCORPORATION OR      (ADDRESS, INCLUDING ZIP CODE,           NUMBER)
    ORGANIZATION)       AND TELEPHONE NUMBER, INCLUDING 
                      AREA CODE OF REGISTRANT'S PRINCIPAL
                              EXECUTIVE OFFICES)         
                                ---------------
                           DOUGLAS A. SATZGER, ESQ.
                        SENIOR VICE PRESIDENT, GENERAL
                             COUNSEL AND SECRETARY
                     U.S. HIGHWAY 22 WEST AND STATION ROAD
                         BRANCHBURG, NEW JERSEY 08876
                                (908) 685-4600
               (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
              NUMBER, INCLUDING AREA CODE, OF AGENT FOR SERVICE)
                                ---------------
                                  COPIES TO:
<TABLE>
<S>                               <C>                         <C>  
RICHARD A. STEINWURTZEL, ESQ.         JOHN A. BICK, ESQ.         MARTHA E. MCGARRY, ESQ.
    FRIED, FRANK, HARRIS,           DAVIS POLK & WARDWELL     SKADDEN, ARPS, SLATE, MEAGHER
     SHRIVER & JACOBSON             450 LEXINGTON AVENUE              & FLOM LLP
        SUITE 800                 NEW YORK, NEW YORK 10017         919 THIRD AVENUE
1001 PENNSYLVANIA AVENUE,N.W.          (212) 450-4000          NEW YORK, NEW YORK 10022
  WASHINGTON, D.C. 20004                                            (212) 735-3000
      (202) 639-7000         
</TABLE> 
                                ---------------
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement.
 
  If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box. [X]
 
  If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [_]
 
  If this form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]
 
  If this form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]
 
  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [_]
                                ---------------
                        CALCULATION OF REGISTRATION FEE
 
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<TABLE>   
<CAPTION>
 TITLE OF EACH CLASS OF
    SECURITIES TO BE       AMOUNT TO       PROPOSED MAXIMUM        AMOUNT OF
       REGISTERED        BE REGISTERED AGGREGATE OFFERING PRICE REGISTRATION FEE
- --------------------------------------------------------------------------------
<S>                      <C>           <C>                      <C>
Rights..................      (1)                N/A                  None(2)
- --------------------------------------------------------------------------------
Common Stock, par value
 $.001 per share........      (3)            $210,000,000          $63,637(4)
- --------------------------------------------------------------------------------
Warrants................      (3)                N/A                  None
</TABLE>    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
(1) Such indeterminable number of Rights as may be issued to existing
    stockholders.
(2) Pursuant to Rule 457(g), no registration fee is payable with respect to
    the Rights since the Rights are being registered in the same registration
    statement as the securities to be offered pursuant thereto.
(3) Such indeterminable number of shares of Class A Common Stock, Class B
    Common Stock and Warrants as may be issued at the actual offering price
    per share such that the maximum aggregate offering price equals
    $210,000,000.
   
(4) Previously paid.     
                           ---------------

  THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(a) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A         +
+REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE   +
+SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY  +
+OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT        +
+BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR   +
+THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE      +
+SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE    +
+UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF  +
+ANY SUCH STATE.                                                               +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                 
              SUBJECT TO COMPLETION DATED DECEMBER 23, 1997.     
 
[LOGO]
 
                                       SHARES
 
                      AIR & WATER TECHNOLOGIES CORPORATION
 
                                  COMMON STOCK
 
              WARRANTS TO PURCHASE SHARES OF CLASS A COMMON STOCK
 
                                  -----------
   
  Air & Water Technologies Corporation, a Delaware corporation (the "Company")
is distributing to holders of record ("Recordholders") of shares of its Class A
Common Stock, par value $.001 per share (the "Class A Common Stock"), at the
close of business on      , 1997 (the "Record Date"), transferable subscription
rights (the "Rights") to subscribe for and purchase additional shares of its
Common Stock (as defined hereinafter). An aggregate of      shares of Class A
Common Stock (the "Underlying Shares") are being offered pursuant to the
exercise of Rights (the "Rights Offering"), subject to the Company's obligation
to issue shares of its Class B Common Stock, par value $.001 per share (the
"Class B Common Stock" and, together with the Class A Common Stock, the "Common
Stock"), in certain circumstances.     
   
  The Company is issuing the Rights in connection with a recapitalization of
the Company (the "Recapitalization"). See "The Recapitalization." The Rights
expire at 5:00 p.m., New York City time, on     
 
                                                        (continued on next page)
   
  BEFORE MAKING AN INVESTMENT DECISION, POTENTIAL INVESTORS SHOULD CAREFULLY
CONSIDER THE FACTORS SET FORTH IN "RISK FACTORS" BEGINNING ON PAGE 19.     
 
STOCKHOLDERS WHO DO NOT EXERCISE THEIR  RIGHTS IN FULL WILL EXPERIENCE DILUTION
 IN THEIR RELATIVE PERCENTAGE OWNERSHIP IN THE COMPANY UPON ISSUANCE OF THE
             COMMON STOCK TO STOCKHOLDERS EXERCISING THEIR RIGHTS.
 
THESE SECURITIES  HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE  SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY  STATE SECURITIES COMMISSION PASSED UPON THE
      ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE 
                        CONTRARY IS A CRIMINAL OFFENSE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<TABLE>   
<CAPTION>
                                     SUBSCRIPTION DISCOUNTS AND PROCEEDS TO THE
                                        PRICE      COMMISSIONS    COMPANY(1)
- -------------------------------------------------------------------------------
<S>                                  <C>          <C>           <C>
Per Share...........................     $            None           $
- -------------------------------------------------------------------------------
Total Maximum Subscription(2)....... $210,000,000     None       $210,000,000
- -------------------------------------------------------------------------------
Total Minimum Subscription(3)....... $185,000,000     None       $185,000,000
</TABLE>    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
   
(1) Estimated expenses of $    payable by the Company, including registration
    fees, legal and accounting fees, subscription and information agent fees,
    printing expenses and other miscellaneous fees and expenses will be paid
    out of existing cash of the Company.     
          
(2) Assumes that Public subscribers in the Rights Offering exercise Rights
    providing at least $25 million of gross proceeds in the Rights Offering.
           
(3) Assumes that CGE exercises its Basic Subscription Privilege and the
    Conditional CGE Subscription and no holder of Rights other than CGE or
    Anjou purchases Class A Common Stock.     
 
                                  -----------
 
                  THE DATE OF THIS PROSPECTUS IS      , 1997.

<PAGE>
 
(Continued from previous page)
   
       , 1998 unless the Company extends such time (as it may be extended, the
"Expiration Date"). See "The Rights Offering--Expiration Date."     
   
  Each Recordholder will receive    Rights for each share of Class A Common
Stock owned of record as of the close of business on the Record Date. Each
Right allows the holder to acquire one share of Common Stock (the "Basic
Subscription Privilege") at a cash price of $    per share (the "Subscription
Price"). See "The Rights Offering--Subscription Privileges--Basic Subscription
Privilege." The Rights will be evidenced by transferable Rights certificates
(the "Rights Certificates").     
   
  Rights holders other than Compagnie Generale des Eaux ("CGE"), the
beneficial owner of  % of the outstanding Class A Common Stock, and Anjou
International Company, a wholly owned subsidiary of CGE ("Anjou"), which
exercise their Basic Subscription Privilege will also be eligible to subscribe
(the "Oversubscription Privilege") at the same cash price of $    per share
for shares of Class A Common Stock that are not otherwise purchased pursuant
to the exercise of Rights (the "Excess Shares"). Rights holders other than CGE
and Anjou are referred to herein as "Public Rights holders" or the "Public."
If an insufficient number of Excess Shares is available to satisfy fully all
oversubscriptions, each Public Rights holder exercising the Oversubscription
Privilege will receive a pro rata portion of the Excess Shares available based
upon the number of Underlying Shares it subscribed for pursuant to the Basic
Subscription Privilege. See "The Rights Offering--Subscription Privileges--
Oversubscription Privilege." A Rights holder cannot revoke the exercise of its
Rights. See "The Rights Offering--No Revocation."     
          
  Public Rights holders who exercise Rights in the Rights Offering also will
receive a certain number of transferable warrants (the "Warrants") to acquire
shares of Class A Common Stock. Each Warrant will entitle the holder to
acquire one share of Class A Common Stock at an exercise price of $2.50 per
share, subject to adjustment under certain circumstances. The Company may
issue up to 10,000,000 Warrants. The number of Warrants actually issued by the
Company will depend on Public participation in the Rights Offering. The
Company will issue that percentage of the 10,000,000 Warrants equal to the
percentage of the total number of Underlying Shares that the Public actually
purchased in the Rights Offering relative to the total number of Underlying
Shares that the Public would have purchased in the Rights Offering if all
Rights held by the Public had been exercised. Each Public subscriber in the
Rights Offering will receive a pro rata portion of the Warrants issued based
upon the total number of Underlying Shares that are purchased by such
subscriber in the Rights Offering. See "Prospectus Summary--The Warrants,"
"Rights Offering--The Rights" and "Description of Warrants--General."     
   
  As of the date of this Prospectus CGE beneficially owns an aggregate of
shares of Class A Common Stock, or   % of all of the outstanding Class A
Common Stock. In the Rights Offering, CGE has agreed to exercise its Basic
Subscription Privilege in full. In addition, if the Public Rights holders do
not exercise all of their Rights and do not purchase the total number of
Underlying Shares available to be purchased by the Public in the Rights
Offering, CGE will subscribe for and purchase, at the same cash price of $
per share (the "Conditional CGE Subscription"), the Underlying Shares not
purchased by the Public in the Rights Offering, provided that the gross
proceeds to the Company from CGE's Basic Subscription Privilege and the
Conditional CGE Subscription shall not exceed $185 million. See "The Rights
Offering--Subscription Privileges--Conditional CGE Subscription."     
          
  If no Rights holder other than CGE and Anjou exercises Rights in the Rights
Offering, CGE will beneficially own     shares of Common Stock, representing
approximately   % of the outstanding shares of Common Stock. If Public Rights
holders exercise their Rights in full, then CGE will beneficially own
shares of Common Stock, representing approximately   % of the outstanding
shares of Common Stock of the Company.     
 
                                       2
<PAGE>
 
   
  The Class A Common Stock is traded on the American Stock Exchange, Inc. (the
"AMEX") under the symbol "AWT." On September 23, 1997, the last full trading
day prior to the public announcement of the Recapitalization, the closing sale
price of the Class A Common Stock on the AMEX was $1.50 per share. On      ,
1997, the last full day of trading prior to the effective date of the
registration statement of which this Prospectus forms a part, the closing sale
price of the Class A Common Stock on the AMEX was $   per share.     
   
  The Rights will be admitted to dealings on the AMEX and will trade on the
AMEX under the symbol "AWT. RT" until the close of business on the last
trading day prior to the Expiration Date, at which time they will cease to
have value. The Company intends to apply for the Warrants to be listed on the
AMEX. The Company does not intend to apply for listing of the Class B Common
Stock.     
 
                             AVAILABLE INFORMATION
 
  The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). Reports, proxy
statements and other information filed by the Company can be inspected and
copied at the public reference facilities maintained by the Commission at Room
1024, 450 Fifth Street, N.W., Washington, D.C. 20549 and at the Regional
Offices of the Commission located at 7 World Trade Center, 13th Floor, New
York, New York 10048 and Citicorp Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661-2511. Copies of such material can be obtained upon
written request addressed to the Public Reference Section of the Commission at
450 Fifth Street, N.W., Washington D.C. 20549, at prescribed rates. The
Commission maintains an Internet Web site that contains reports, proxy and
information statements and other information regarding issuers that file
electronically. The address of that Web site is http://www.sec.gov. The
Company's Class A Common Stock is listed on the American Stock Exchange, Inc.
and such reports, proxy statements and other information can also be inspected
at the offices of the American Stock Exchange, Inc., 86 Trinity Place, New
York, New York 10006.
 
  The Company has filed with the Commission a Registration Statement on Form
S-1 (together with any amendments thereto, the "Registration Statement") under
the Securities Act of 1933, as amended (the "Securities Act"), with respect to
the Rights, the Warrants and the shares of Common Stock issuable upon exercise
of the Rights. This Prospectus (this "Prospectus") does not contain all the
information set forth in the Registration Statement. Such additional
information may be obtained from the Commission's principal office in
Washington, D.C. Statements contained in this Prospectus as to the contents of
any contract or other document referred to herein or therein summarize all
material elements of the relevant document but are not necessarily complete,
and, in each instance, reference is made to the copy of such contract or other
document filed as an exhibit to the Registration Statement or such other
document, each such statement being qualified in all respects by such
reference.
 
                                       3
<PAGE>
 
 
                               PROSPECTUS SUMMARY
 
  The following material is qualified in its entirety by and should be read in
conjunction with the more detailed information and financial statements,
including the notes thereto, appearing elsewhere in this Prospectus. Each
prospective investor is urged to read this Prospectus in its entirety.
 
                                  THE COMPANY
 
GENERAL
   
  Air & Water Technologies Corporation, through its subsidiaries, provides a
comprehensive range of services and technologies directed principally at
providing complete services for the operation, maintenance and management of
water and wastewater treatment systems; engineering, design and construction of
water and wastewater treatment facilities; and the remediation of hazardous
waste. The Company believes it provides a complement of products and services
that satisfy the environmental and essential services needs of its targeted
client base. The Company markets its products and services through two widely
recognized trade names: Professional Services Group ("PSG") for the operation,
maintenance and management of water and wastewater treatment systems and
Metcalf & Eddy for water, wastewater-related and hazardous waste products and
engineering services.     
 
  The Company provides its full complement of products and services to
predominantly four major customer sectors consisting of the electric generating
industry; the solid waste incineration industry; governmental entities,
including municipalities and state and federal agencies; and specific
industrial categories, such as petroleum refining, pulp and paper,
pharmaceutical, chemical, primary and secondary metals, food processing,
printing and furniture manufacture.
   
  On December 2, 1997, the Company announced its decision to divest Research-
Cottrell. Research-Cottrell designs and develops products and technologies
targeted at specific client needs such as air pollution control equipment. The
Company is currently in negotiations with several interested parties and
expects that most of the air pollution control businesses operated through
Research-Cottrell will be sold within the next several months.     
 
  The Company's principal executive offices are located at U.S. Highway 22 West
and Station Road, Branchburg, New Jersey 08876.
 
PROFESSIONAL SERVICES GROUP
   
  PSG provides operation, maintenance and management services ("OM&M") for
treatment systems in the various water and wastewater and sludge and biosolid
waste management markets. PSG operates in thirty-five states, Canada and Puerto
Rico. In the United States, PSG currently has 135 projects, concentrated east
of the Mississippi, with the highest concentration in the Northeast. These
services range from assisting owners and operators in addressing individual
operating needs to the assumption by PSG of complete responsibility for
operating complex treatment systems. PSG provides OM&M services for water
supply and wastewater treatment systems, primarily for cities, municipalities
and other local governmental entities. PSG also serves the industrial market
and federal and state governments by providing OM&M services for wastewater
treatment systems and groundwater remediation treatment systems. In addition,
PSG has experience dealing with the planning and implementation of large
biosolids management programs, including composting facilities. The water and
wastewater privatization market is estimated to be, on the basis of annual
revenues, a $1.1 billion market, of which PSG has approximately a 45% market
share among the top seven companies and approximately a 25% share of the total
market. PSG's sales were $270.6 million and $271.7 million during the fiscal
years ended October 31, 1996 and 1997, respectively. PSG's operating income was
$7.4 million and $1.8 million for the fiscal years ended October 31, 1996 and
1997, respectively.     
 
                                       4
<PAGE>
 
 
METCALF & EDDY
   
  Metcalf & Eddy provides its clients with a broad spectrum of environmental
consulting services, including engineering studies and design, project
management, site evaluation, environmental assessment and master planning.
Metcalf & Eddy's services are directed principally at the protection of public
health and the environment through sound water resources management, hazardous
waste remediation, and solid waste disposal. These services include protection,
treatment and distribution of water from surface and groundwater sources;
collection, treatment and disposal of wastewater and its associated by-products
such as sludge; pretreatment of industrial wastewater prior to discharge into a
municipal system or on-site treatment and disposal; remediation of hazardous
waste sites involving contaminated soils and groundwater; monitoring and
closure of sanitary landfills with disposal of associated leachate; and
management and transportation of hazardous waste. In addition, Metcalf & Eddy
provides expertise in environmental science, institutional and public policy
support, regulatory compliance and the use of innovative technologies to meet
clients' needs. Metcalf & Eddy's sales were $215.4 million and $186.5 million
during the fiscal years ended October 31, 1996 and 1997, respectively. Metcalf
& Eddy's operating income was $13.4 million for the fiscal year ended October
31, 1996 and its operating loss was $14.7 million for the fiscal year ended
October 31, 1997.     
       
RECENT DEVELOPMENTS
 
 Recapitalization
   
  The Company entered into the Recapitalization Agreement (the
"Recapitalization Agreement"), dated as of September 24, 1997, with Anjou and
CGE. The purpose of the Recapitalization and related transactions is to improve
the Company's overall liquidity, while offering Public stockholders the
opportunity to participate in the Company's recovery. The Recapitalization is
intended to substantially reduce the Company's interest and dividend
requirements, enhance the Company's ability to fund its working capital
requirements, capital expenditures and other corporate needs and provide
liquidity for Public stockholders in an informed trading market.     
   
  The Recapitalization Agreement provides, among other things, for the exchange
(the "Exchange") by CGE and its subsidiaries of $60 million of 5 1/2% Series A
Convertible Exchangeable Preferred Stock, par value $.01 per share, of the
Company (the "Series A Preferred Stock") for shares of Class A Common Stock at
an exchange price equal to the Subscription Price. On      , 1997, the Company
and CGE effected the Exchange and the Company issued     shares of Class A
Common Stock in exchange for the Series A Preferred Stock. See "The
Recapitalization--The Exchange." Prior to the Exchange, CGE beneficially owned
approximately 50.0009% of the outstanding Class A Common Stock of the Company.
Immediately following the Exchange, CGE beneficially owned approximately   % of
the outstanding Class A Common Stock of the Company.     
 
  In addition, the Recapitalization Agreement provides for the Rights Offering
and various other strategic and business matters, including the use of the
proceeds from the Rights Offering. See "The Recapitalization" and "Use of
Proceeds."
   
  In accordance with the terms of the Investment Agreement, dated as of March
30, 1994, among the Company, Anjou and CGE, as amended as of September 24, 1997
(the "Investment Agreement"), the terms and conditions of the Recapitalization
Agreement were negotiated at arm's length between CGE and a special committee
(the "Special Committee") of Independent Directors (as defined hereinafter) and
were approved by the Board of Directors of the Company (the "Board") based in
part on the recommendation of the Special Committee. The Investment Agreement
was approved by the Company's stockholders at the 1994 Annual Stockholders
Meeting and was amended by the Recapitalization Agreement. It contains ongoing
covenants among the Company, CGE and Anjou, including covenants concerning the
composition of the Company's Board of Directors (and the maintenance of not
less than three Independent Directors), CGE's right to cause the election of
the Company's Chief Executive Officer and its Chief Financial Officer, the use
of an independence governing     
 
                                       5
<PAGE>
 
mechanism to review certain transactions between the Company and CGE (and its
affiliates), and CGE's agreement for the Company to be CGE's exclusive vehicle
in the United States for certain purposes. See "Certain Relationships and
Related Transactions--The Investment Agreement--Certain Covenants of CGE--
Exclusivity."
 
 Consent Solicitation
   
  Concurrently with the Rights Offering, the Company is soliciting the consent
(the "Consent Solicitation") of the holders of at least a majority in principal
amount (the "Requisite Consents") of the Company's outstanding 8% Convertible
Subordinated Debentures due 2015 (the "Convertible Debentures") to amend
certain provisions of the indenture (the "Indenture") governing the Convertible
Debentures permitting the holders to require the Company to repurchase the
Convertible Debentures if any person acquires beneficial ownership of 75% or
more of the voting power of the Company (the "Change of Control Provision").
       
  In the event the Requisite Consents are not obtained prior to the Expiration
Date and the exercise of the Basic Subscription Privilege or Oversubscription
Privilege or the Conditional CGE Subscription would cause a person's beneficial
ownership of Class A Common Stock to exceed 74%, the Company shall be obligated
to issue to such person only such number of shares of Class A Common Stock as
would cause such person's beneficial ownership of the Company's voting power to
equal 74% of the outstanding voting power. Any additional shares to be issued
thereunder shall be shares of Class B Common Stock. Prior to the Expiration
Date, the Company intends to effect the Charter Amendment (as defined
hereinafter) which, among other things, will amend the terms of the Class B
Common Stock such that the Class A Common Stock and the Class B Common Stock
will be identical in all respects except that (i) the Class B Common Stock will
not be entitled to vote and (ii) the Class B Common Stock will automatically
convert into Class A Common Stock immediately upon the earlier of August 1,
2000 or seventy-five days following the termination (by amendment of the
Indenture, redemption of the Convertible Debentures or otherwise) of the Change
of Control Provision. Based upon the current ownership of Class A Common Stock,
the Company does not believe that any stockholder other than CGE would be
issued Class B Common Stock in the event the Company fails to obtain the
Requisite Consents.     
 
 Charter Amendment
   
  Prior to the Expiration Date, the Company intends to amend the Restated
Certificate of Incorporation of the Company (the "Charter Amendment") to (i)
increase the authorized capital stock of the Company to permit the issuance of
shares of Class A Common Stock and, to the extent necessary, Class B Common
Stock in the Rights Offering and (ii) to amend the terms of the Class B Common
Stock to provide that such Class B Common Stock will be non-voting and will
automatically convert into Class A Common Stock immediately upon the earlier of
August 1, 2000 or seventy-five days following the termination (by amendment of
the Indenture, redemption of the Convertible Debentures or otherwise) of the
Change of Control Provision. CGE and Anjou each provided its written consent
for the Charter Amendment. The consent of CGE and Anjou is sufficient to adopt
the Charter Amendment without any further vote of the Company's stockholders.
The Charter Amendment will be effective upon the filing of an appropriate
certificate of amendment with the Secretary of State of the State of Delaware,
which filing is expected to occur as soon as practicable following the
expiration of the twenty calendar day period following the mailing of an
information statement pursuant to Rule 14c-2 under the Exchange Act (the
"Information Statement").     
 
 Business Planning Committee
   
  In connection with the Recapitalization, the Company has established a new
business planning committee of the Board (the "Business Planning Committee") to
review the business strategies prepared by senior management of the Company
and, as appropriate, make recommendations on the formulation and implementation
of those strategies that have as their objective increasing stockholder value.
The Business Planning Committee,     
 
                                       6
<PAGE>
 
which will remain in place through the end of fiscal year 1999, is comprised of
three CGE appointed directors and two directors who are unaffiliated with and
independent of CGE.
   
  Among other things, the Business Planning Committee will identify areas where
CGE's management expertise and the Company's business may be effectively
integrated. The Chairman of the Business Planning Committee is currently Daniel
Caille, the Chief Executive of CGE's worldwide water business.     
 
 USF&G Guarantees by CGE
   
  The Company is often required to procure bid and performance bonds from
surety companies, particularly for clients in the public sector. A bid bond
guarantees that the Company will enter into the contract under consideration at
the price bid and a performance bond guarantees performance of the contract. In
August 1997, United States Fidelity and Guaranty Company and certain of its
affiliates ("USF&G") notified the Company that it would suspend the renewal and
issuance of new bid and performance bonds as of September 30, 1997, due to the
Company's operating performance and resulting financial condition as reported
at the end of the fiscal quarter ended April 30, 1997, unless it received
indemnification from CGE or Anjou for at least 20% of all future bond requests
including renewals. Anjou has entered into an agreement with USF&G regarding an
arrangement pursuant to which, until terminated at Anjou's discretion, Anjou
will enter into guarantees of certain obligations of the Company relating to
the bonding of certain contracts under the Master Surety Agreement dated as of
October 31, 1995, between USF&G and the Company and its subsidiaries. Such
guarantees would cover, in each instance, 30% of the aggregate amount of the
bonds executed, procured or provided on behalf of the Company or its
subsidiaries on or after October 1, 1997, and certain penalty amounts, up to
$45 million. See "The Recapitalization--Other--USF&G Bonding Guarantees."     
   
 Bank Credit Facility     
   
  The Company maintains a three-year senior secured credit facility (the "Bank
Credit Facility") dated as of March 10, 1995, with The First National Bank of
Chicago and Societe Generale, New York Branch ("Societe Generale"), co-agents
for a syndicate which includes six additional banks (the "Lending Banks"). On
December 12, 1997, Societe Generale purchased and assumed from all of the other
Lending Banks all of such banks' rights and obligations under the Bank Credit
Facility, becoming the sole lending bank thereunder, and the Company entered
into an amendment (the "Amendment") to extend the Bank Credit Facility until
December 11, 1998. The Bank Credit Facility had been scheduled to expire on
March 31, 1998. The Amendment waives the Company's compliance with certain
covenants and amends others. The prior amendments and waiver would have
terminated on December 15, 1997 had the Bank Credit Facility not been amended.
Following the Recapitalization, the Company intends to enter into discussions
regarding the establishment of a new credit facility following the maturity of
the Bank Credit Facility. CGE also has reaffirmed to Societe Generale the terms
of CGE's existing credit support of the Company, including a commitment by CGE
to maintain a minimum 48% voting equity ownership interest and to check to
ensure that the Company will have sufficient financial resources to meet its
obligations under the Bank Credit Facility.     
   
 Revised Business Strategy     
   
  During the second quarter of 1997, the Company completed a review of its
operations' three year business plans. These plans included a detailed analysis
of markets, growth opportunities and forecasted three year operating results,
cash flows and return on capital employed for each business segment. As a
result of this review, management considered the actions necessary to redeploy
its capital to PSG and Metcalf & Eddy, its core water business. The strategic
analysis conducted led to the conclusion that the Company did not have the
overall size and expertise to grow the air pollution control businesses
profitably. Among other factors contributing to this approach were recent tax
law changes which may extend the duration of OM&M contracts and create
additional opportunities within the water and wastewater treatment markets
which are the primary markets for PSG and Metcalf & Eddy. See "Business--The
Water/Wastewater Privatization Market."     
 
                                       7
<PAGE>
 
   
  Furthermore, the returns on capital employed within the PSG and Metcalf &
Eddy segments are forecasted to be greater than the returns for the Research-
Cottrell segment. From a competitive standpoint, management also believes that
the Company has greater competitive advantages and market penetration through
its PSG and Metcalf & Eddy businesses than what has been achieved by its
Research-Cottrell operations.     
   
  As a result of the above, management assessed the impact of de-emphasizing
the Research-Cottrell business segment and redeploying its capital to its PSG
and Metcalf & Eddy segments. A financial advisor was retained to assist the
Company in exploring strategic alternatives related to this redeployment. On
December 2, 1997, the Company announced its decision to divest Research-
Cottrell. The Company is currently in negotiations with several interested
parties and expects that most of the air pollution control businesses operated
through Research-Cottrell will be sold within the next several months.     
       
                             RELATIONSHIP WITH CGE
   
  As of the date hereof, CGE, directly and indirectly through Anjou,
beneficially owns approximately  % of the Class A Common Stock. In addition,
pursuant to the Investment Agreement, CGE received the right to designate as
members of the Company's Board of Directors (and all committees thereof, other
than the Special Committee) at least that number of directors that is
proportionate to the aggregate voting power represented by the shares of Class
A Common Stock and Series A Preferred Stock beneficially owned by CGE (subject
to a minimum of three Independent Directors on the Board). The Company has also
agreed in the Investment Agreement that CGE shall have the right to designate
the Chief Executive Officer and the Chief Financial Officer of the Company. See
"Certain Relationships and Related Transactions--The Investment Agreement
Certain Covenants of the Company--Representation on the Board of Directors;
Management." In addition, the Bank Credit Facility requires CGE to maintain its
support of the Company, including a minimum 48% voting equity ownership
interest in the Company and its right to designate at least 48% of the
Company's Board of Directors as well as the Chief Executive Officer and the
Chief Financial Officer. See "Certain Relationships and Related Transactions--
Involvement of CGE in Other Financing Arrangements." As a result of its
ownership interest and its representation on the Board of Directors of the
Company, CGE exercises significant influence on the Company and its governance
structure. See "Risk Factors--Controlling Stockholder; Ability of Controlling
Stockholder to Increase Ownership."     
   
  In connection with the Investment Agreement, the Company and CGE also entered
into a Credit Agreement dated as of June 14, 1994, pursuant to which the
Company received a $125 million unsecured term loan from CGE (the "CGE Note")
due June 15, 2001. See "Certain Relationships and Related Transactions--CGE
Note." On August 2, 1996, the Company entered into a seven-year $60 million
unsecured revolving credit facility with Anjou (the "Anjou Note"). The facility
matures on August 2, 2003. See "Certain Relationships and Related
Transactions--Anjou Note" and "Risk Factors--Substantial Leverage." Both the
CGE Note and the Anjou Note contain restrictive covenants requiring CGE to
remain the largest stockholder of the Company and to maintain a certain voting
interest in the Company's common stock. See "Risk Factors--Controlling
Stockholder; Ability of Controlling Stockholder to Increase Ownership." Other
than the first $25 million of gross proceeds, if any, received from
subscriptions by the Public, the gross proceeds of the Rights Offering will be
used to repay the CGE Note and the Anjou Note. See "Use of Proceeds."     
   
  CGE has unconditionally guaranteed performance by PSG of PSG's contract with
the Puerto Rico Aqueduct & Sewer Authority ("PRASA"). Pursuant to the contract,
PSG manages wastewater plants, water treatment plants and related collection
and distribution systems and pumping stations in Puerto Rico. During the fiscal
years ended October 31, 1996 and 1997, PSG's contract with PRASA accounted for
39% and 38% of PSG's total sales and 22% and 23% of the Company's total sales,
respectively. See "Risk Factors--Dependency on Key Projects and Government
Contracts" and "Certain Relationships and Related Transactions--
Recapitalization Agreement; Other CGE Related Matters."     
 
                                       8
<PAGE>
 
 
  Pursuant to the Recapitalization Agreement, immediately prior to the Record
Date, CGE and the Company effected the Exchange pursuant to which the shares of
Series A Preferred Stock held by CGE were automatically exchanged for    shares
of Class A Common Stock. In addition, CGE has agreed to exercise in full its
Basic Subscription Privilege and the Conditional CGE Subscription, up to a
maximum aggregate subscription of $185 million. As a result, if no other Rights
are exercised and the Requisite Consents are obtained, CGE will acquire
shares of Class A Common Stock. Consequently, immediately after the
Recapitalization, CGE would own approximately  % of the total outstanding Class
A Common Stock of the Company. Under such circumstances, if all Rights holders
exercise their Rights in the Rights Offering CGE would own approximately   % of
the total outstanding Class A Common Stock of the Company. See "Risk Factors--
Controlling Stockholder; Ability of Controlling Stockholder to Increase
Ownership."
 
  Following the Recapitalization, the Company will require additional financial
resources to develop and support each of its businesses at PSG and Metcalf &
Eddy, to undertake related long-term capital expenditures or other investments
and to participate in the emerging privatization market in the wastewater
management industry. CGE has informed the Company that it intends to work with
the Company to explore various ways to develop such financial resources for
these purposes, including, among others, the raising by CGE of an investment
fund or other off-balance sheet vehicle which would invest, on a case-by-case
basis, in various project financings undertaken by the Company. It is
anticipated that any such vehicle would invest in such project finance
activities of the Company on terms which are commercially reasonable. As a
result, CGE and the Company and possibly others, investing either directly or
indirectly through such vehicle or otherwise, would share in the returns on
such projects pro rata in relation to their respective equity investments.
 
                                       9
<PAGE>
 
 
                              THE RIGHTS OFFERING
 
Securities Offered......     
                          The Company is offering an aggregate of     shares of
                          Class A Common Stock in the Rights Offering, subject
                          to the Company's obligation to issue Class B Common
                          Stock in certain circumstances. In addition, the
                          Company will issue on a pro rata basis to Public
                          subscribers in the Rights Offering a certain number
                          of Warrants to purchase shares of Class A Common
                          Stock at an exercise price of $2.50 per share. The
                          number of Warrants actually issued by the Company
                          will depend on Public participation in the Rights
                          Offering. See "The Rights Offering--The Rights" and
                          "Description of Warrants."     
 
Basic Subscription           
 Privilege..............  Each Recordholder of Class A Common Stock at the
                          close of business on the Record Date will receive, at
                          no cost, approximately     Rights for each share of
                          Class A Common Stock owned of record at the close of
                          business on the Record Date. Each Right will allow
                          the holder to subscribe for one share of Class A
                          Common Stock at the Subscription Price, subject to
                          the Company's obligation to issue shares of Class B
                          Common Stock in certain circumstances. No fractional
                          Rights or cash in lieu thereof will be issued or
                          paid. Fractional Rights will be rounded to the
                          nearest whole number, with such adjustments as may be
                          necessary to ensure that if all Rights are exercised,
                          the Company will receive gross proceeds of $210
                          million. ONCE A RIGHT HAS BEEN PROPERLY EXERCISED, IT
                          CANNOT BE REVOKED. See "The Rights Offering--
                          Subscription Privileges--Basic Subscription
                          Privilege."     
 
Oversubscription             
 Privilege..............  Each Public Rights holder which elects to exercise
                          the Basic Subscription Privilege may also subscribe
                          at the Subscription Price for Excess Shares of Class
                          A Common Stock, subject to availability and proration
                          and the Company's obligation to issue shares of Class
                          B Common Stock in certain circumstances. If an
                          insufficient number of Excess Shares is available to
                          satisfy fully all elections to exercise the
                          Oversubscription Privilege, the available Excess
                          Shares will be prorated among holders who exercise
                          their Oversubscription Privilege based on the number
                          of shares of Class A Common Stock each Rights holder
                          subscribed for pursuant to its Basic Subscription
                          Privilege. The Subscription and Information Agent
                          will return any excess payments by mail without
                          interest or deduction promptly after the Expiration
                          Date and after effecting all prorations and
                          adjustments contemplated by the Rights Offering. See
                          "The Rights Offering--Subscription Privileges--
                          Oversubscription Privilege."     
 
Conditional CGE              
 Subscription...........  CGE, the beneficial owner of approximately  % of the
                          Class A Common Stock currently outstanding, has
                          agreed to exercise in full its Basic Subscription
                          Privilege to subscribe for     shares of Class A
                          Common Stock. In addition, if all Underlying Shares
                          are not purchased in the Rights Offering (including
                          pursuant to the Oversubscription Privilege), CGE will
                          subscribe for and purchase at the Subscription Price
                          an additional number of shares of Class A Common
                          Stock (subject to the Company's obligation to issue
                          Class B Common Stock in certain circumstances)
                          pursuant to its Conditional CGE Subscription. The
                          total number of shares subscribed for by CGE and its
                          subsidiaries pursuant to the Conditional CGE
                          Subscription     
 
                                       10
<PAGE>
 
                             
                          will not exceed (i) the total number of shares of
                          Class A Common Stock available to be purchased by the
                          Public in the Rights Offering, minus (ii) the total
                          number of shares of Class A Common Stock actually
                          purchased by the Public in the Rights Offering, and
                          in no event will the gross proceeds resulting from
                          CGE's and its subsidiaries' Basic Subscription
                          Privilege and the Conditional CGE Subscription exceed
                          $185 million. As a result, if no other Rights holder
                          exercises Rights in the Rights Offering, CGE will
                          purchase     shares of Class A Common Stock in the
                          Rights Offering (subject to the Company's obligation
                          to issue shares of Class B Common Stock in certain
                          circumstances). See "The Rights Offering--
                          Subscription Privileges-- Conditional CGE
                          Subscription."     
     
Subscription Price......  $    per share.     
 
Record Date.............        , 1997.
 
Expiration Date.........  The Rights will expire, if not exercised, at 5:00
                          p.m., New York City time on    , 1998, unless
                          extended for up to ten days in the sole discretion of
                          the Company. See "The Rights Offering--Expiration
                          Date."
     
Transferability of        
 Rights.................  The Rights will be evidenced by transferable Rights
                          Certificates that may be exercised by a Rights holder
                          until the Expiration Date. The Rights will be
                          admitted to dealings on the AMEX and will trade on
                          the AMEX until the close of business on the last
                          trading day prior to the Expiration Date, at which
                          time they will cease to have value. However, the
                          Company can give no assurance that a market for the
                          Rights will develop or, if such a market develops,
                          how long it will continue. See "Risk Factors--No
                          Prior Market for Rights or Warrants."     
     
Procedure for             
 Exercising Rights......  To exercise the Basic Subscription Privilege and the
                          Oversubscription Privilege, a Rights holder should
                          properly complete and sign the Rights Certificate and
                          forward it (or follow the Guaranteed Delivery
                          Procedures), with payment of the Subscription Price
                          for each Underlying Share subscribed for pursuant to
                          the Basic Subscription Privilege and the
                          Oversubscription Privilege, to the Subscription and
                          Information Agent. The Subscription and Information
                          Agent must receive the Rights Certificate or Notice
                          of Guaranteed Delivery with payment of the
                          Subscription Price on or prior to the Expiration
                          Date. Rights holders who use the mail to forward
                          Rights Certificates are urged to use insured,
                          registered mail, return receipt requested. See "The
                          Rights Offering--Method of Subscription--Exercise of
                          Rights."     
   
                          If the aggregate Subscription Price paid by an
                          exercising Rights holder is insufficient to purchase
                          the number of Underlying Shares that the Rights
                          holder indicates are being subscribed for, or if an
                          exercising Rights holder does not specify the number
                          of Underlying Shares to be purchased, then the Rights
                          holder will be deemed to have exercised the Basic
                          Subscription Privilege to the full extent of the
                          payment tendered. If the aggregate Subscription Price
                          paid by an exercising Rights holder exceeds the
                          amount necessary to purchase the number of Underlying
                          Shares for which the     
 
                                       11
<PAGE>
 
                          Rights holder has indicated an intention to
                          subscribe, then the Rights holder will be deemed to
                          have exercised the Oversubscription Privilege to the
                          full extent of the excess payment tendered, and any
                          remaining amount shall be returned to such Rights
                          holder. No interest will be paid on funds delivered
                          in payment of the Subscription Price. See "The Rights
                          Offering--Method of Subscription--Exercise of
                          Rights."
 
                          ONCE A HOLDER OF RIGHTS HAS EXERCISED THE BASIC
                          SUBSCRIPTION PRIVILEGE OR THE OVERSUBSCRIPTION
                          PRIVILEGE, SUCH EXERCISE MAY NOT BE REVOKED. RIGHTS
                          NOT EXERCISED PRIOR TO THE EXPIRATION DATE WILL
                          EXPIRE.
     
Persons Holding Shares,
 or Wishing to Exercise
 Rights, Through
 Others.................  Persons who hold shares of Class A Common Stock
                          beneficially and receive the Rights distributable
                          with respect to those shares through a broker,
                          dealer, commercial bank, trust company or other
                          nominee, as well as persons who hold certificates of
                          Class A Common Stock directly and prefer to have such
                          institutions effect transactions relating to the
                          Rights on their behalf, should contact the
                          appropriate institution or nominee and request it to
                          effect the transactions for them. If a beneficial
                          owner wishes to obtain a separate Rights Certificate,
                          it should contact the nominee as soon as possible and
                          request that a separate Rights Certificate be issued
                          by the Subscription and Information Agent. A nominee
                          may request any Rights Certificate held by it to be
                          split into such smaller denominations as it wishes,
                          provided that the Subscription and Information Agent
                          receives the Rights Certificate, properly endorsed,
                          no later than 11:00 a.m., New York City time, on
                           , 1998. See "The Rights Offering--Method of
                          Subscription--Exercise of Rights."     
    
Procedure for
 Exercising Rights by
 Foreign and Certain
 Other Stockholders.....  The Subscription and Information Agent will not mail
                          Rights Certificates to holders of Class A Common
                          Stock whose addresses are outside the United States
                          or who have an Army Post Office ("APO") or a Fleet
                          Post Office ("FPO") address, but will hold the Rights
                          Certificates for the accounts of such holders. To
                          exercise their Rights, such holders must notify the
                          Subscription and Information Agent, and take all
                          other steps which are necessary to exercise the
                          Rights, on or prior to 11:00 a.m., New York City
                          time, on      , 1998. If such holders do not follow
                          the procedures set forth in the preceding sentence
                          prior to the Expiration Date, the Rights will expire.
                          See "The Rights Offering--Foreign and Certain Other
                          Stockholders."     
 
Federal Income Tax
 Consequences...........  For United States income tax purposes, receipt of
                          Rights by a Recordholder pursuant to the Rights
                          Offering will be treated as a nontaxable distribution
                          with respect to the Class A Common Stock. See
                          "Certain United States Federal Income Tax
                          Consequences."
 
 
                                       12
<PAGE>
 
Issuance of Class A
 Common Stock...........
                             
                          The Subscription and Information Agent will deliver
                          certificates representing shares of Class A Common
                          Stock purchased pursuant to the Basic Subscription
                          Privilege and Oversubscription Privilege and the
                          Conditional CGE Subscription to subscribers as soon
                          as practicable after the Expiration Date and after
                          all prorations and adjustments contemplated by the
                          terms of the Rights Offering have been effected,
                          subject to the Company's obligation to issue Class B
                          Common Stock under certain circumstances. See "The
                          Rights Offering--Subscription Privileges."     
 
Issuance of Class B
 Common Stock...........
                             
                          In the event the Company does not obtain the
                          Requisite Consents prior to the Expiration Date and
                          the exercise of the Basic Subscription Privilege or
                          Oversubscription Privilege or the Conditional CGE
                          Subscription would cause a person's beneficial
                          ownership of the Company's voting power to exceed
                          74%, the Company shall issue to such person only such
                          number of shares of Class A Common Stock as would
                          cause such person's beneficial ownership of the
                          Company's voting power to be no greater than 74% of
                          the outstanding voting power and any additional
                          shares to be issued shall be shares of Class B Common
                          Stock. The Subscription and Information Agent will
                          deliver certificates representing shares of Class B
                          Common Stock purchased pursuant to the Basic
                          Subscription Privilege or Oversubscription Privilege
                          or the Conditional CGE Subscription to subscribers at
                          the same time as the shares of Class A Common Stock.
                          Based upon the current stock ownership of the
                          Company, the Company expects that CGE would be the
                          only stockholder to be issued shares of Class B
                          Common Stock. See "The Recapitalization--Consent
                          Solicitation; Issuance of Class B Common Stock."     
 
Issuance of Warrants....  Certificates representing the transferable Warrants
                          acquired pursuant to the Rights Offering will be
                          issued to Public subscribers in the Rights Offering
                          as soon as practicable following the Expiration Date
                          but in no event later than the date on which
                          certificates representing Underlying Shares purchased
                          pursuant to the Basic Subscription Privilege and
                          Oversubscription Privilege are delivered to
                          subscribers.
 
No Board or Special
 Committee
 Recommendation.........
                          An investment in the Class A Common Stock, the Class
                          B Common Stock (to the extent applicable) and the
                          Warrants must be made pursuant to each investor's
                          evaluation of such investor's best interests.
                          Accordingly, neither the Board of Directors of the
                          Company nor the Special Committee makes any
                          recommendation to Rights holders regarding whether
                          they should exercise their Rights.
 
AMEX Symbol for Class A
 Common Stock...........
                          "AWT"
 
AMEX Symbol for              
 Rights.................  "AWT.RT"     
 
AMEX Symbol for              
 Warrants...............  "AWT.WS"     
 
                                       13
<PAGE>
 
 
Use of Proceeds.........     
                          If no Rights holder other than CGE exercises Rights
                          in the Rights Offering, the gross cash proceeds to
                          the Company from the sale of the Underlying Shares
                          pursuant to the Rights Offering are estimated to be
                          $185 million. Assuming Public Rights holders exercise
                          Rights providing the Company with at least $25
                          million of gross proceeds, the aggregate gross cash
                          proceeds to the Company from the sale of the
                          Underlying Shares pursuant to the Rights Offering are
                          estimated to be $210 million. CGE has agreed to
                          subscribe in the Rights Offering for up to $185
                          million of Class A Common Stock (subject to the
                          Company's obligation to issue shares of Class B
                          Common Stock in certain circumstances). The Rights
                          Offering, however, is not conditioned upon any
                          minimum level of exercise of Rights by the Public.
                          Consequently, there can be no assurance that the
                          Company will raise more than $185 million of proceeds
                          from the Rights Offering or that the Public will
                          participate in the Rights Offering. See "Risk
                          Factors-- Indefinite Amount and Use of Proceeds."
                          Other than the first $25 million of gross proceeds
                          received from subscriptions by the Public, which the
                          Company will retain for general corporate purposes,
                          the Company will use the gross proceeds of the Rights
                          Offering, including the Conditional CGE Subscription,
                          to repay the $185 million aggregate principal amount
                          of debt of CGE and its subsidiaries consisting of (i)
                          the $125 million CGE Note and (ii) the $60 million
                          Anjou Note. The Company has taken all necessary legal
                          actions in order to repay such indebtedness,
                          including obtaining any required waivers. See "Use of
                          Proceeds."     
   
Subscription and
 Information Agent......
                             
                               See "Subscription and Information Agent."     
       
                                       14
<PAGE>
 
                                  THE WARRANTS
 
The Warrants............     
                          The Company has available for issuance up to
                          10,000,000 Warrants, which when exercised, would
                          entitle the holders to purchase, in the aggregate, up
                          to 10,000,000 shares of Class A Common Stock. The
                          Company will issue that percentage of the 10,000,000
                          Warrants equal to the percentage of the total number
                          of Underlying Shares purchased by the Public in the
                          Rights Offering relative to the total number of
                          Underlying Shares issuable upon full exercise of
                          Rights by the Public in the Rights Offering (the
                          "Warrant Pool"). The Company will issue to each
                          Public subscriber in the Rights Offering that
                          fraction of the Warrant Pool equal to the total
                          number of Underlying Shares purchased by such holder
                          in the Rights Offering divided by the total number of
                          Underlying Shares purchased by all Public subscribers
                          in Rights Offering. See "The Rights Offering--The
                          Rights" and "Description of Warrants--General."     
 
Expiration Date.........  The Warrants will expire three years from the date of
                          issuance (the "Warrant Expiration Date"). See
                          "Description of Warrants--General."
 
Exercise................     
                          Each Warrant will entitle the holder, subject to
                          certain conditions, to purchase, at any time and from
                          time to time prior to the Warrant Expiration Date,
                          one share of Class A Common Stock (a "Warrant Share")
                          at a price equal to $2.50 per share (the "Warrant
                          Exercise Price"), subject to adjustment from time to
                          time upon the occurrence of certain changes in Class
                          A Common Stock. See "Description of Warrants--
                          General" and "Description of Warrants--Adjustments."
                              
Rights as                    
 Stockholders...........  Holders of Warrants will not have any rights as
                          stockholders of the Company. See "Description of
                          Warrants--General."     
 
Registration of Warrant      
 Shares.................  Holders of Warrants will be able to exercise their
                          Warrants only if a registration statement relating to
                          the Warrant Shares is then in effect or the exercise
                          of such Warrants is exempt from the registration
                          requirements of the Securities Act and the Warrant
                          Shares are qualified for sale or exempt from
                          qualification under the applicable state blue sky
                          laws. Subject to Black Out Periods (as defined
                          hereinafter), at such time as the average daily
                          Closing Price of the Class A Common Stock equals or
                          exceeds 85% of the Warrant Exercise Price ($2.125)
                          for twenty consecutive Trading Days, the Company will
                          prepare, file and use its best efforts to cause to
                          become effective a registration statement for all of
                          the Warrant Shares, and the Company will use its
                          commercially reasonable efforts to keep such
                          registration statement continuously effective under
                          the Securities Act to permit the prospectus included
                          in the registration statement to be lawfully
                          delivered. See "Description of Warrants--Registration
                          of Warrant Shares" and "Risk Factors--Ability to
                          Exercise Warrants."     
 
Transfer Restrictions/       
 Listing................  The Warrants will be freely transferable. The Company
                          will use its commercially reasonable efforts to
                          secure and maintain the listing of the Warrants and
                          the Warrant Shares upon the AMEX, so long as any
                          other     
 
                                       15
<PAGE>
 
                             
                          shares of Class A Common Stock will be listed or
                          quoted upon the AMEX. See "Description of Warrants--
                          Transfer Restrictions; Listing" and "Risk Factors--No
                          Prior Market for the Rights or Warrants."     
 
Warrant Agent...........  For additional information concerning the Rights, the
                          Warrants and the Common Stock, see "The Rights
                          Offering," "Description of Warrants" and "Description
                          of Capital Stock."
 
                                  RISK FACTORS
 
  Purchasers of securities in the Rights Offering should carefully consider the
factors set forth under the caption "Risk Factors" and other information
included in this Prospectus prior to making an investment decision.
 
                                       16
<PAGE>
 
                      SUMMARY CONSOLIDATED FINANCIAL DATA
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>   
<CAPTION>
                                             FISCAL YEARS ENDED OCTOBER 31,
                                            ----------------------------------
                                               1995        1996        1997
                                            ----------  ----------  ----------
<S>                                         <C>         <C>         <C>
INCOME STATEMENT DATA:
Sales.....................................  $  398,661  $  482,091  $  456,375
Cost of sales.............................     309,496     394,124     385,573
Selling, general and administrative ex-
 penses...................................      66,697      62,316      75,755
Depreciation and amortization.............      12,279      13,983      16,861
Impairment charge.........................         --          --        5,000
                                            ----------  ----------  ----------
Operating income (loss) from continuing
 operations...............................      10,189      11,668     (26,814)
Interest income...........................       1,113         923         359
Interest expense..........................     (23,925)    (22,597)    (24,356)
Other expense, net........................         (37)     (2,296)       (502)
                                            ----------  ----------  ----------
Loss from continuing operations before in-
 come taxes...............................     (12,660)    (12,302)    (51,313)
Income tax (expense) benefit..............        (587)      1,246        (514)
                                            ----------  ----------  ----------
Loss from continuing operations ..........     (13,247)    (11,056)    (51,827)
Income (loss) from discontinued opera-
 tions....................................       5,262       5,788    (108,754)
                                            ----------  ----------  ----------
Net loss..................................      (7,985)     (5,268)   (160,581)
Preferred stock dividend..................      (3,300)     (3,300)     (3,300)
                                            ----------  ----------  ----------
Net loss applicable to common stockhold-
 ers......................................  $  (11,285) $   (8,568) $ (163,881)
                                            ==========  ==========  ==========
Earnings (loss) per common share (after
 preferred stock dividend):
  Continuing operations ..................  $    (0.52) $    (0.45) $    (1.72)
  Discontinued operations.................        0.17        0.18       (3.40)
                                            ----------  ----------  ----------
  Net loss................................  $    (0.35) $    (0.27) $    (5.12)
                                            ==========  ==========  ==========
Weighted average shares outstanding.......      32,018      32,018      32,019
                                            ==========  ==========  ==========
</TABLE>    
 
<TABLE>   
<CAPTION>
                                  AS OF OCTOBER 31,    AS OF OCTOBER 31, 1997
                                  ------------------  -------------------------
                                                      AS ADJUSTED  AS ADJUSTED
                                                        MINIMUM      MAXIMUM
                                    1996     1997     SUBSCRIPTION SUBSCRIPTION
                                  -------- ---------  ------------ ------------
<S>                               <C>      <C>        <C>          <C>
BALANCE SHEET DATA:
Working capital (deficit)........ $  7,556 $ (55,802)  $ (60,402)   $ (35,402)
Total assets.....................  496,358   383,065     376,965      401,965
Goodwill.........................  169,578   164,337     164,337      164,337
Long-term debt...................  306,542   307,845     122,845      122,845
Stockholders' equity (deficit)...   54,241  (109,262)     69,638       94,638
</TABLE>    
 
                                       17
<PAGE>
 
                  NOTES TO SUMMARY CONSOLIDATED FINANCIAL DATA
          
(1) The Company has never declared or paid cash dividends on the Class A Common
    Stock, and the Bank Credit Facility prohibits the Company from declaring or
    paying cash dividends on the Class A Common Stock. The Company intends to
    retain its earnings, if any, to finance the growth and development of its
    business and to repay outstanding indebtedness and does not anticipate
    paying cash dividends on its Class A Common Stock in the foreseeable
    future.     
   
(2) The Company did not declare the quarterly dividend of $825,000 due
    September 30, 1997 on the Series A Preferred Stock, all of which was held
    by CGE, due to its concerns over liquidity and adequacy of its surplus. The
    Company currently intends to pay all such dividends in arrears ($1.1
    million at October 31, 1997) in connection with the Recapitalization.     
   
(3) See Note 2 to the Consolidated Financial Statements contained elsewhere in
    this Prospectus for discussion of the Recapitalization Agreement and the
    Company's relationship with CGE.     
   
(4) See Note 3 to the Consolidated Financial Statements contained elsewhere in
    this Prospectus for discussion of the planned Research-Cottrell divestiture
    and its related losses reflected in fiscal 1997.     
          
(5) See Note 11 to the Consolidated Financial Statements contained elsewhere in
    this Prospectus for discussion of PSG's contract with PRASA.     
          
(6) Pro forma loss per share for the year ended October 31, 1997, after giving
    effect to the issuance of 140,000,000 shares of Class A Common Stock under
    the Minimum Subscription and the Exchange and approximately 154,286,000
    shares of Class A Common Stock under the Maximum Subscription and the
    Exchange and the application of the net proceeds necessary to fund the
    repayment of the CGE Note and Anjou Note, would be $(0.23) per share and
    $(0.21) per share, respectively.     
 
                                       18
<PAGE>
 
                                 RISK FACTORS
 
  Each prospective purchaser should carefully examine all the information
contained in this Prospectus and should give particular consideration to the
following factors in evaluating an investment in the securities offered
hereby:
 
SUBSTANTIAL LEVERAGE
   
  Following the Rights Offering, the Company will continue to be highly
leveraged. As of October 31, 1997, the Company's total consolidated long-term
indebtedness (excluding the current portion) was approximately $307.8 million,
primarily consisting of an aggregate of $125.0 million principal amount
outstanding under the CGE Note, $60.0 million principal amount outstanding
under the Anjou Note and $115.0 million principal amount of Convertible
Debentures. At such date the Company's consolidated cash and cash equivalents
was approximately $12.1 million and its stockholders' deficit was
approximately $109.3 million. On a pro forma basis, after giving effect to the
Rights Offering and the application of the proceeds therefrom to the payment
of the CGE Note and the Anjou Note, the Company's consolidated long-term
indebtedness (excluding the current portion) would have been approximately
$122.8 million. Assuming no Rights holder other than CGE and Anjou exercises
Rights in the Rights Offering, after giving effect to the Rights Offering, the
Company's consolidated cash and cash equivalents would have been approximately
$7.5 million and its stockholders' equity would have been approximately $69.6
million. Assuming full participation in the Rights Offering, after giving
effect to the Rights Offering, the Company's consolidated cash and cash
equivalents would have been approximately $32.5 million and its stockholders'
equity would have been approximately $94.6 million. There can be no assurances
that any Rights holder other than CGE will exercise Rights in the Rights
Offering.     
   
  The level of the Company's indebtedness could have materially adverse
consequences to holders of the Company's securities, including but not limited
to the following: (i) a substantial portion of the Company's cash flow from
operations will be required to be dedicated to debt service and will not be
available for other purposes; (ii) the Company's ability to obtain additional
debt financing in the future for working capital and capital expenditures
could be limited; (iii) the Company may be more vulnerable to extended
economic downturns and may be restricted in exploiting business opportunities;
and (iv) the Company's level of indebtedness could limit its flexibility in
planning for, or reacting to, changes in market conditions, including adverse
governmental regulations (including a decline in enforcement of environmental
regulations). The Company may not be able to obtain the additional capital
required in connection with its planned growth initiatives, including
additional investments resulting from potential new or renewals of OM&M
contracts and acquisitions. See "--Reliance on Environmental Regulation;
Potential Environmental Liabilities."     
   
RESTRICTIONS IMPOSED BY TERMS OF BANK CREDIT FACILITY     
   
  On December 12, 1997, the Company entered into the Amendment to extend the
Bank Credit Facility until December 11, 1998. The facility had been scheduled
to expire on March 31, 1998. The Amendment waives the Company's compliance
with certain covenants and amends others. The prior amendments and waiver
would have terminated on December 15, 1997 had the Bank Credit Facility not
been amended. Following the Recapitalization, the Company intends to enter
into discussions regarding the establishment of a new credit facility
following the maturity of the Bank Credit Facility.     
   
  The Bank Credit Facility contains certain financial and other restrictive
covenants, including, among other things, the maintenance of certain financial
ratios, and restrictions on the incurrence of additional indebtedness,
acquisitions, the sale of assets, the payment of dividends and the repurchase
of subordinated debt.     
   
  The Company's ability to comply with the financial and other covenants in
the Bank Credit Facility beyond March 31, 1998 is substantially dependent upon
the completion of the Rights Offering. Failure to complete the Rights Offering
may require additional waivers or amendments to the Bank Credit Facility.
There can be no assurance that such waivers or amendments could be obtained.
In the absence of a waiver or amendment, Societe Generale would have the right
to refuse any further extensions of credit and the right to accelerate payment
of     
 
                                      19
<PAGE>
 
all outstanding amounts under the Bank Credit Facility. In addition,
substantially all of the Company's long-term debt and certain other financial
and non-financial obligations contain cross-default or acceleration
provisions. In the event the Company were required to repay accelerated
outstanding amounts under the Bank Credit Facility and other obligations, the
Company does not believe that it will have financial resources adequate to
repay such amounts and to satisfy its ongoing working capital requirements.
Therefore, the failure to complete the Rights Offering could have a material
adverse effect on the Company's business prospects and on its financial
condition and liquidity.
   
RISK OF FLUCTUATING MARKET CONDITIONS; RISING INTEREST RATES     
   
  The ability of the Company to satisfy its obligations under the Bank Credit
Facility will be dependent upon its future performance and market conditions,
which will be subject to prevailing economic conditions and to financial,
business and other factors, including factors beyond the Company's control. A
substantial portion of the long-term indebtedness of the Company bears
interest at rates that fluctuate with the London Interbank Offered Rate
("LIBOR"). The Anjou Note bears interest at LIBOR plus 0.6%, the CGE Note
bears interest at a rate based upon one, two, three or six-month LIBOR, as
selected by the Company, plus 1.25%, and the Bank Credit Facility, as amended,
bears interest at LIBOR plus 1.25%, or at a defined bank rate approximating
prime. As a result, the Company's financial performance may be adversely
affected by increases in LIBOR.     
 
CONTINUING NET LOSSES
   
  The Company has experienced net losses on a historical basis and may incur
net losses in the future. The Company incurred net losses of approximately
$160.6 million, $5.3 million, $8.0 million, $261.8 million and $5.6 million
for the fiscal years ended October 31, 1997, 1996, 1995, 1994 and 1993,
respectively. The amount of the Company's net loss for the fiscal year ended
October 31, 1997 is primarily the result of certain operating charges and
asset write-offs taken in connection with the Company's decision to divest the
Research-Cottrell businesses. The amount of the Company's net loss for the
fiscal year ended October 31, 1994 is attributable in part to the impact of
unusual charges, losses from discontinued operations and extraordinary loss in
the amount of $224.5 million for such period. See "Selected Consolidated
Financial Data." There can be no assurance as to when, if ever, the Company
will be profitable.     
   
REDEPLOYMENT OF CAPITAL; REVISED BUSINESS STRATEGY; LIQUIDITY     
          
  As a result of its consideration of a revised business strategy and the
actions necessary to redeploy its capital to the higher growth water and
wastewater businesses that it operates through PSG and Metcalf & Eddy, on
December 2, 1997, the Company announced its decision to divest Research-
Cottrell. The Company is currently in negotiations with several interested
parties and expects that most of the air pollution control businesses operated
through Research-Cottrell will be sold within the next several months. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Results of Operations."     
          
  The Company's future results and financial condition are dependent on the
successful implementation of this new business strategy. The Company's revised
business plans include assumptions relating to growth initiatives related to
longer term OM&M contracts, including those related to the privatization of
the water and wastewater treatment market, which may require significant up-
front investments including capital improvements, upgrades or other
investments. There can be no assurance that such assumptions will be realized,
and the failure to achieve such assumptions could have a material adverse
effect on the Company's ability to implement successfully its revised business
strategy. In addition, new capital may be required to be invested in the
Metcalf & Eddy segment in order to achieve its growth targets through
geographical expansion and/or acquisitions. The Company's ability to access
capital for these requirements, whether through access to the capital markets
or a potential investment fund or off-balance sheet funding vehicle raised by
CGE, may have a significant impact on the successful implementation of its
business plans. There can be no assurance that the Company will have the
access to capital necessary to implement successfully its revised business
strategy. The     
 
                                      20
<PAGE>
 
   
Company's inability to implement a revised business strategy or realize the
anticipated benefits of such a strategy may have a material adverse effect on
the Company's results of operations and financial condition.     
   
  The Company believes it will have sufficient working capital to finance its
on-going operations through improved working capital management, asset
divestitures related to the Research-Cottrell divestiture and reduction of
financing costs through the strengthening of its current capital structure as
contemplated by the Recapitalization, however, there can be no assurance that
the Company will have adequate liquidity to finance its on-going operations.
       
CONTINUED LISTING OF SECURITIES; MEETING CONTINUED LISTING REQUIREMENTS     
   
  On August 13, 1997, the Company's Convertible Debentures were delisted from
the Nasdaq SmallCap Market as a consequence of the Company's capital and
surplus not meeting the established requirements. In addition, on September
16, 1997, the AMEX temporarily suspended trading on that day of the Company's
Class A Common Stock for approximately five hours in connection with its
review of the Company's press release announcing its third quarter financial
results. Trading in the Class A Common Stock resumed on September 17, 1997.
The AMEX will consider suspending dealings in, or removing from listing,
securities of a company which, among other things, fails to meet certain
minimum levels of stockholders' equity and/or suffers sustained losses for a
certain period. Pursuant to the Recapitalization Agreement, the Company has
agreed to use its commercially reasonable efforts to meet the continued
listing requirements of the AMEX and to continue to be listed thereon and for
the Rights and Warrants to be admitted to dealings and listed thereon, as the
case may be. There can be no assurance, however, that the Company will
continue to meet the requirements for continued listing or admission to
dealings on the AMEX, as the case may be, of its Class A Common Stock or the
Rights or the Warrants.     
          
ABILITY TO EXECUTE PROJECTS WITHIN COST ESTIMATES     
       
  A substantial amount of the Company's revenues are derived from fixed price
long-term contracts. The ultimate profitability of these contracts is
contingent upon the Company's ability to meet its required contractual
obligations related to a service or product within the current cost estimates
which are subject to change as the project develops. Among other factors which
would impact the profitability under such contracts are the resolution of
various claims and back charges related to its subcontractors or clients.
Historically the Company has experienced difficulties in executing certain
projects from time to time within the original cost estimates in all segments
but primarily within the Research-Cottrell segment. The Company's inability to
execute its existing backlog within the current cost estimates may have a
material adverse impact on its financial condition and results of operations.
 
POTENTIAL LITIGATION LIABILITY
 
  In connection with a broad investigation by the U.S. Department of Justice
into alleged illegal payments by various persons to members of the Houston
City Council, the Company's subsidiary, PSG, received a federal grand jury
subpoena on May 31, 1996 requesting documents regarding certain PSG
consultants and representatives that had been retained by PSG to assist it in
advising the City of Houston regarding the benefits that could result from the
privatization of Houston's water and wastewater system (the "DOJ
Investigation"). PSG has cooperated and continues to cooperate with the
Department of Justice which has informed the Company that it is reviewing
transactions among PSG and its consultants. The Company promptly initiated its
own independent investigation into these matters and placed PSG's then Chief
Executive Officer on administrative leave of absence with pay. The former PSG
Chief Executive Officer, who has denied any wrongdoing, resigned from PSG on
December 4, 1996. In the course of its ongoing investigation, the Company
became aware of questionable financial transactions with third parties and
payments to certain PSG consultants and other individuals, the nature of which
requires further investigation. The Company has brought these matters to the
attention of the Department of Justice and continues to cooperate fully with
its investigation. No charges of
 
                                      21
<PAGE>
 
wrongdoing have been brought against PSG or any PSG executive or employee by
any grand jury or other government authority. However, since the government's
investigation is still underway and is conducted largely in secret, no
assurance can be given as to whether the government authorities will
ultimately determine to bring charges or assert claims resulting from this
investigation that could implicate or reflect adversely upon or otherwise have
a material adverse effect on the financial position or results of operations
of PSG or the Company taken as a whole.
   
  The City of Bremerton, Washington brought a contribution action against
Metcalf & Eddy Services, Inc. ("M&E Services"), the operator of a City-owned
wastewater treatment plant from 1987 until late 1995. The contribution action
arises from two prior lawsuits against the City for alleged odor nuisances
brought by two groups of homeowners neighboring the plant. In the first
homeowners' suit, the City paid $4.3 million in cash and approximately $5.0
million for odor control technology to settle the case. M&E Services
understands the odor control measures generally have been successful and the
odors have been reduced as a result. M&E Services was not a party to the first
homeowners' suit, which has been dismissed with prejudice as to all parties.
In the settlement of the second homeowners' case, the City of Bremerton paid
the homeowners $2.9 million, and M&E Services contributed $0.6 million to the
settlement without admitting liability. All claims raised by the homeowners in
the second suit (except for two recalcitrant homeowners) were resolved. All
claims by and between M&E Services and the City in the second homeowners' suit
were expressly reserved and will be tried after the City's contribution
action, which is currently scheduled for trial in March 1998. The City is
seeking to recover the amounts it expended on the two settlements, damages for
M&E Services' alleged substandard operation of the plant and attorneys' fees.
M&E Services denies any liability to the City and believes that it has
meritorious defenses to the claim. However, no assurances can be given that an
adverse judgment would not have a material adverse effect on the financial
position or results of operations of M&E Services or the Company taken as a
whole.     
   
  On October 14, 1997, Research-Cottrell, Inc. and its subsidiary, Research-
Cottrell Belgium, S.A. ("R-C Belgium"), were named in a lawsuit by N.V.
Seghers Engineering ("Seghers") filed in the Commercial Court in Mechelen,
Belgium. Seghers is R-C Belgium's joint venture partner on two large pollution
control projects. The suit claims damages of approximately $13 million
allegedly resulting from R-C Belgium's breach of contract and substandard
performance. Damages claimed in the lawsuit consist not only of Seghers'
alleged cost to repair the R-C Belgium equipment, but also lost profits,
damages to business reputation, theft of employees (R-C Belgium hired two
former Seghers' employees), increased costs arising out of the failure to gain
timely acceptance of the two plants, excessive payments to R-C Belgium due to
alleged unfair pricing practices by R-C Belgium and other miscellaneous
interest charges and costs. The initial response to the suit is due January
20, 1998. The case involves complex technical and legal issues and is in its
earliest stages. Nevertheless, the Company denies liability to Seghers and,
based upon the information currently available, believes Seghers' claimed
damages are grossly inflated. In addition, the Company believes it has
meritorious counterclaims based upon Seghers' breaches of contract and poor
performance.     
 
  The Company and its subsidiaries are parties to various other legal actions
arising in the normal course of their businesses, some of which involve claims
for substantial sums. Moreover, as a general matter, providers of services
similar to those provided by the Company may be subject to lawsuits alleging
negligence or other similar claims and environmental liabilities, which may
involve claims for substantial damages. Damages assessed in connection with,
and the costs of defending any such actions could be substantial. The
Company's management believes that the levels of coverage are adequate to
cover currently estimated exposures. Although the Company believes that it
will be able to obtain adequate insurance coverage in the future at acceptable
costs, there can be no assurance that the Company will be able to obtain such
coverage or will be able to do so at an acceptable cost or that the Company
will not incur significant liabilities in excess of policy limits.
 
HIGHLY COMPETITIVE INDUSTRY
 
  The Company faces substantial competition in each market in which it
operates. The Company competes primarily on its engineering, scientific and
technological expertise. To the extent that non-proprietary or
 
                                      22
<PAGE>
 
   
conventional technologies are used, the Company also relies upon its experience
and trade names as a basis for competition. Such trade names include:
"Professional Services Group" and "Metcalf & Eddy" in the water and wastewater
treatment and sludge management markets and "Metcalf & Eddy" in the hazardous
waste remediation market. Many companies, some of which have greater resources
than the Company, participate in the Company's markets and no assurance can be
given that such other companies will not enter its markets.     
 
  Customers for PSG's and Metcalf & Eddy's water and wastewater treatment
services are primarily governmental entities and typically award contracts on
the basis of technical qualifications and price. For PSG's treatment system
OM&M contracts, technical qualification is required; however, price is
generally a key determining factor. For Metcalf & Eddy's design services
contracts, the majority of which are cost-plus-fixed-fee arrangements,
technical qualifications are the primary factor, followed by price
competitiveness. In the hazardous waste clean-up market, Metcalf & Eddy
competes with many local, regional and national firms on the basis of
experience, reputation and price.
          
  There can be no assurance that the Company will be able to compete
successfully with its existing or any new competitors or that competitive
pressures faced by the Company will not materially and adversely affect its
results or operations and financial condition. In addition, there can be no
assurance that due to competitive pressures the margins achieved from contracts
obtained and renewed will not be decreased. See "Business--Competition."     
 
DEPENDENCY ON KEY PROJECTS AND GOVERNMENT CONTRACTS
   
  In any given period, a substantial percentage of the Company's sales is
dependent upon several large projects. Typically, Metcalf & Eddy's fifteen
largest projects in terms of sales represent approximately 50% of its total
sales. To the extent that these projects are canceled or substantially delayed
and not replaced, it could have a material adverse impact on the Company's
sales and earnings.     
   
  Approximately 90% of the Company's fiscal year 1997 gross revenues were
derived from contracts with federal, state, municipal and other governmental
agencies. The termination of any of the Company's significant contracts with
such governmental agencies, or the failure to obtain either extensions or
renewals of certain existing contracts or additional contracts with such
governmental agencies, could have a material adverse effect on the Company's
earnings and business.     
   
  PSG historically has been successful in obtaining most of its OM&M contract
renewals. Approximately 35 projects with annual revenues of $40 million are
expected to be renewed in fiscal year 1998. The failure to renew most of these
projects at comparable operating margins could materially and adversely impact
PSG's financial condition and results of operations.     
   
  During the fiscal years ended October 31, 1997 and 1996, PSG's contract with
the Puerto Rico Aqueduct and Sewer Authority ("PRASA") accounted for 38% and
39% of PSG's total sales and 23% and 22% of the Company's total sales,
respectively. Operations were initiated under the contract on September 1,
1995. The contract has a five-year term but PRASA may cancel the contract for
any reason after August 31, 1998. Pursuant to the contract, PSG manages 69
wastewater plants, 128 water treatment plants and related collection and
distribution systems and pumping stations in Puerto Rico. The contract's
profitability is contingent upon achieving certain contract incentives. In
addition, PSG had receivables of $34.3 million due from PRASA for certain
reimbursable costs at October 31, 1997. The Company's wholly-owned subsidiary,
PS Group of Puerto Rico, Inc., is in the process of negotiations with PRASA
regarding a replacement contract for the existing five-year contract.
Management currently expects that the contract with PRASA will not be canceled
by PRASA in August 1998, but will remain in effect through its original five-
year term ending August 2000 or be amended or replaced with a new contract.
Additionally, the PRASA employees who operate the PRASA facilities are subject
to a collective bargaining agreement which expires in June 1998.     
 
                                       23
<PAGE>
 
   
USF&G GUARANTEES BY CGE     
   
  The Company is often required to procure bid and performance bonds from
surety companies, particularly for clients in the public sector. A bid bond
guarantees that the Company will enter into the contract under consideration
at the price bid and a performance bond guarantees performance of the
contract. In August 1997, USF&G notified the Company that it would suspend the
renewal and issuance of new bid and performance bonds as of September 30,
1997, due to the Company's operating performance and resulting financial
condition as reported at the end of the fiscal quarter ended April 30, 1997,
unless it received indemnification from CGE or Anjou for at least 20% of all
future bond requests including renewals. Anjou has entered into an agreement
with USF&G regarding an arrangement pursuant to which, until terminated at
Anjou's discretion, Anjou will enter into guarantees of certain obligations of
the Company relating to the bonding of certain contracts under the Master
Surety Agreement dated as of October 31, 1995 between USF&G and the Company
and its subsidiaries. Such guarantees would cover, in each instance, 30% of
the aggregate amount of the bonds executed, procured or provided on behalf of
the Company or its subsidiaries on or after October 1, 1997, and certain
penalty amounts, up to $45 million. There can be no assurance that USF&G will
be willing to provide bid bonds to the Company following the Recapitalization
without a guarantee from CGE (or one of its affiliates) and there can be no
assurance that CGE (or one of its affiliates) would be willing to provide such
a guarantee following the Recapitalization. See "--Dependency on Key Projects
and Government Contracts."     
 
RELIANCE ON ENVIRONMENTAL REGULATION; POTENTIAL ENVIRONMENTAL LIABILITIES
   
  Federal, state and local legislation and regulations which require
substantial expenditures to meet environmental quality standards and which
impose substantial penalties for non-compliance are a principal factor driving
demand for the Company's services. A decline in enforcement and related
required expenditures could have a significant adverse effect on the demand
for the Company's services. Furthermore, to the extent the Company may have
assumed or may in the future assume liability for the quality of the water
discharged by treatment facilities it operates under contract or the treatment
facilities and water pollution control systems to which it provides its
services, and to the extent the discharged water may not comply with water
pollution control standards established by federal and state regulations due
to factors within the Company's control, the Company may be held liable for
such non-compliance and perhaps for any consequences thereof. See "--Potential
Litigation Liability."     
   
  The Company is also subject to regulation under federal, state and local
environmental laws and regulations pertaining to the discharge of materials
into the environment, the handling and disposition of wastes (including solid
and hazardous wastes) or otherwise relating to protection of the environment.
The Company believes that it is currently in compliance with all applicable
material environmental laws and regulations.     
 
EFFECTIVENESS OF BUSINESS PLANNING COMMITTEE
 
  The Board of Directors has constituted the Business Planning Committee to
review the business strategies prepared by the Company's senior management
and, as appropriate, make recommendations on the formulation and
implementation of those strategies that have as their objective increasing
stockholder value. There can be no assurance that the Business Planning
Committee will successfully identify any such strategies, or if identified
that such strategies can be successfully implemented or will increase
stockholder value.
 
CONTROLLING STOCKHOLDER; ABILITY OF CONTROLLING STOCKHOLDER TO INCREASE
OWNERSHIP
   
  After giving effect to the Exchange, CGE, directly and indirectly through
Anjou, beneficially owns shares of Class A Common Stock representing
approximately  % of the Class A Common Stock (and voting power) of the
Company. In addition, pursuant to the Investment Agreement, CGE received the
right to designate as members of the Company's Board of Directors (and all
committees thereof, other than the Special Committee) at least that number of
directors that is proportionate to the aggregate voting power represented by
the shares of Class A Common Stock and Series A Preferred Stock beneficially
owned by CGE (subject to a minimum of three Independent Directors on the
Board). The Company has also agreed in the Investment Agreement that CGE shall
have the right to designate the Chief Executive Officer and the Chief
Financial Officer of the Company. Except for the two current Independent
Directors, the Company's seven person Board of Directors is comprised     
 
                                      24
<PAGE>
 
   
entirely of CGE designees. Furthermore, the Bank Credit Facility requires CGE
to maintain its support of the Company, including a minimum 48% voting equity
ownership interest in the Company and its right to designate at least 48% of
the Company's Board of Directors as well as the Chief Executive Officer and
the Chief Financial Officer of the Company. In addition, the CGE Note and
Anjou Note both contain restrictive covenants requiring CGE to remain the
largest stockholder of the Company and to maintain a certain voting interest
(26% under the CGE Note and 40% under the Anjou Note) in the Company's common
stock. As a result of its ownership interest and its representation on the
Board of Directors of the Company, CGE exercises significant influence on the
Company and its governance structure.     
 
  Pursuant to the Investment Agreement, CGE and its affiliates have the right
to engage in transactions with the Company and its affiliates, including the
acquisition of securities, subject to approval, in certain circumstances, of a
majority of the Independent Directors or a special committee thereof.
Moreover, pursuant to the Recapitalization Agreement, until the third
anniversary of the consummation of the Recapitalization, CGE has agreed not to
effect a "short-form" merger of the Company without approval of a majority of
the Independent Directors. See "The Recapitalization--Other."
   
  Pursuant to the Recapitalization Agreement, immediately prior to the Record
Date, the shares of Series A Preferred Stock held by CGE were automatically
exchanged into     shares of Class A Common Stock. In addition, CGE has agreed
to exercise in full its Basic Subscription Privilege and the Conditional CGE
Subscription, up to a maximum aggregate subscription of $185 million of Class
A Common Stock (subject to the Company's obligation to issue Class B Common
Stock in certain circumstances). As a result, if no other Rights are exercised
and the Requisite Consents are obtained, CGE would acquire    shares of Class
A Common Stock (subject to the Company's obligation to issue Class B Common
Stock in certain circumstances). Consequently, immediately after the Exchange
and Rights Offering, CGE would own approximately  % of the total outstanding
Class A Common Stock of the Company. See "The Rights Offering--Subscription
Privileges--Basic Subscription Privilege" and "The Rights Offering--
Subscription Privileges--Conditional CGE Subscription."     
 
  There can be no assurance that the interests of CGE will be the same as
those of the other stockholders of the Company. In addition, CGE's controlling
ownership interest in the Company may tend to deter non- negotiated tender
offers or other efforts to obtain control of the Company and thereby preclude
stockholders from having the opportunity to sell shares at prices higher than
those otherwise prevailing.
 
PROHIBITION ON PAYMENT OF DIVIDENDS ON THE CLASS A COMMON STOCK
 
  The Company has never paid cash dividends on the Class A Common Stock, and
the Company currently intends to retain its earnings, if any, to finance the
growth and development of its business and to repay any outstanding
indebtedness and does not expect to pay dividends on the Class A Common Stock
in the foreseeable future. In addition, the Bank Credit Facility prohibits the
Company from declaring or paying cash dividends on the Class A Common Stock.
See "Price Range of Class A Common Stock and Dividend Policy."
 
MARKET RISKS ASSOCIATED WITH THE CLASS A COMMON STOCK
   
  The Subscription Price of $   per share of Class A Common Stock represents a
[discount/premium] of  % from the average closing price of $   for the Class A
Common Stock as reported on the AMEX for the ten consecutive trading day
period ending on      , 1997, five days before the Record Date, and a
[discount/premium] of  % from the average closing price of $   for the Class A
Common Stock as reported on the AMEX for the 60 day trading period ending on
the Record Date.     
 
  The market price of the Company's Class A Common Stock has been volatile in
recent years and on    , 1997 reached a 52-week low of $   . Factors such as
quarter-to-quarter variations in the Company's revenues and results of
operations and liquidity have caused and are expected to continue to cause the
market price of the Company's securities to fluctuate significantly. In
addition, in recent years the stock markets have experienced significant
volatility, which often may be unrelated to the operating performance of the
affected companies. Such volatility may also adversely affect the market price
of the Company's securities. See "Price Range of Class A Common Stock and
Dividend Policy."
 
                                      25
<PAGE>
 
  There can be no assurance that the market price of the Class A Common Stock
will not decline during the period the Rights and Warrants are outstanding or
that, following the issuance of the Rights, the Underlying Shares and
Warrants, respectively, a subscribing holder will be able to sell shares
purchased in the Rights Offering at a price equal to or greater than the
Subscription Price or to sell the Warrants. Once a holder of Rights has
exercised the Basic Subscription Privilege or the Oversubscription Privilege,
such exercise may not be revoked. See "The Rights Offering--No Revocation."
Moreover, until certificates are delivered, subscribing Rights holders may not
be able to sell the shares of Class A Common Stock that they have purchased in
the Rights Offering. Certificates representing shares of Class A Common Stock
purchased pursuant to the Rights Offering will be delivered as soon as
practicable after the Expiration Date and all prorations and adjustments
contemplated by the terms of the Rights Offering have been effected.
   
  No interest will be paid to Rights holders on funds delivered to the
Subscription and Information Agent pursuant to the exercise of Rights pending
delivery of Underlying Shares.     
 
NO PRIOR MARKET FOR RIGHTS OR WARRANTS
   
  The Rights and Warrants constitute new issues of securities with no
established trading market. The Rights will be admitted to dealings on the
AMEX and will trade on the AMEX under the symbol "AWT.RT." However, no
assurance can be given as to the liquidity of the Rights. The Company has
agreed to use its commercially reasonable efforts to cause the Warrants to be
listed on the AMEX, however, there can be no assurance that the Warrants will
be accepted for listing. Accordingly, no assurance can be given as to the
liquidity of, or trading market for, the Warrants.     
       
ABILITY TO EXERCISE WARRANTS
   
  Holders of Warrants will be able to exercise their Warrants only if a
registration statement relating to the Warrant Shares is then in effect or the
exercise of such Warrants is exempt from the registration requirements of the
Securities Act and the Warrant Shares are qualified for sale or exempt from
qualification under the applicable securities laws of the states in which the
various holders of the Warrants reside. The Company is required under the
terms of the Warrant Agreement (as defined hereinafter) to use its best
efforts to cause to become effective under the Securities Act, at such time as
the average daily Closing Price of the Class A Common Stock is greater than or
equal to 85% of the Warrant Exercise Price ($2.125) for twenty consecutive
Trading Days, a registration statement covering the issuance and resale, to
the extent applicable, of the Warrant Shares. Subject to certain Black-Out
Periods, the Company will also be required to use its best efforts to maintain
the effectiveness of the registration statement relating to the Warrant Shares
until the expiration or exercise of all Warrants. See "Description of
Warrants--Registration of Warrant Shares." There can be no assurance that the
Company will be able to file, cause to be declared effective or keep a
registration statement continuously effective until all of the Warrants have
been exercised or have expired.     
 
DILUTION
   
  The consummation of the Recapitalization will result in an increase of up to
    shares of Class A Common Stock outstanding, assuming full exercise of
Rights if the Requisite Consents are obtained, or, if the Requisite Consents
are not obtained, up to     shares of Class A Common Stock and     shares of
Class B Common Stock (which, except that it does not vote and shares convert
automatically into an equal number of shares of Class A Common Stock
immediately upon the earlier of August 1, 2000 or seventy-five days following
the termination of the Change of Control Provision, is identical to the Class
A Common Stock).     
 
  Holders who do not exercise their Rights will experience a substantial
decrease in their proportionate interest in the equity ownership and voting
power of the Company. The sale of the Rights may not compensate a holder for
all or any part of any reduction in the market value of such stockholder's
Class A Common Stock resulting from the Rights Offering. Stockholders who do
not exercise or sell their Rights will relinquish any value inherent in the
Rights.
 
 
                                      26
<PAGE>
 
CHANGE OF CONTROL PROVISION OF CONVERTIBLE DEBENTURES
 
  The Company currently has outstanding $115 million of Convertible
Debentures. The Change of Control Provision of Article Fifteen of the
Indenture grants holders of the Convertible Debentures the right to require
the Company to repurchase outstanding Convertible Debentures at a repurchase
price of 100% of the principal amount of the Convertible Debentures, together
with accrued interest to the repurchase date, if any person becomes the
beneficial owner of 75% or more of the total voting power of all shares of
capital stock of the Company entitled to vote in the election of directors.
The Indenture currently provides that at the option of the Company, if such
repurchase right is triggered and exercised, the Company may repurchase such
Convertible Debentures with a cash payment or, so long as the Class A Common
Stock is listed on a national securities exchange or quoted on the Nasdaq
National Market System, by delivery of shares of Class A Common Stock having a
fair market value equal to the redemption price. For purposes of a repurchase
with Class A Common Stock, the fair market value of shares of the Class A
Common Stock shall be equal to 95% of the average of quoted prices over a
five-day period prior to the repurchase date.
 
  The Company is currently conducting the Consent Solicitation to amend the
Indenture to delete the Change of Control Provision. The Rights Offering is
not conditioned upon obtaining the Requisite Consents, and there can be no
assurance that the Company will obtain the Requisite Consents. See "Prospectus
Summary--The Company--Recent Developments." Moreover, assuming the Requisite
Consents are not obtained, there can be no assurance that after the Expiration
Date a person will not acquire beneficial ownership of 75% or more of voting
power of the Company thus triggering the Change of Control Provision or that
the Company would have adequate cash available to redeem the Convertible
Debentures. If the Company were to satisfy its obligations in respect of the
Change of Control Provision by delivering Class A Common Stock, as discussed
above, stockholders would experience substantial dilution in their relative
ownership interest in the Class A Common Stock.
 
INDEFINITE AMOUNT AND USE OF PROCEEDS
   
  If no Rights holder other than CGE and Anjou exercises Rights in the Rights
Offering, the gross proceeds from the Rights Offering will be $185 million.
Assuming Public Rights holders exercise Rights providing the Company with at
least $25 million in gross proceeds, the aggregate gross proceeds from the
Rights Offering will be $210 million. The first $25 million of gross proceeds,
if any, received pursuant to the Rights Offering from subscriptions by the
Public will be retained by the Company for general corporate purposes. Other
than the first $25 million of gross proceeds received from subscriptions by
the Public, the gross proceeds of the Rights Offering will be used to repay
the $185 million aggregate principal amount of debt of CGE and its
subsidiaries consisting of the CGE Note and the Anjou Note. See "Use of
Proceeds."     
   
  CGE has agreed to subscribe in the Rights Offering for up to $185 million of
Class A Common Stock, for a total subscription of up to     shares of Class A
Common Stock (subject to the Company's obligation to issue shares of Class B
Common Stock in certain circumstances). The Rights Offering, however, is not
conditioned upon any minimum level of exercise of the Rights. Consequently,
there can be no assurance that the Company will raise more than $185 million
of gross proceeds from the Rights Offering or that the Public will participate
in the Rights Offering.     
 
                                      27
<PAGE>
 
                                USE OF PROCEEDS
   
  If Public Rights holders exercise Rights providing the Company with at least
$25 million in gross proceeds, the aggregate gross proceeds from the Rights
Offering will be $210 million. If no Rights holder other than CGE and Anjou
exercises Rights in the Rights Offering, the gross proceeds from the Rights
Offering will be $185 million. CGE has agreed to subscribe in the Rights
Offering for up to $185 million of Class A Common Stock, for a total
subscription of up to     shares of Class A Common Stock (subject to the
Company's obligation to issue shares of Class B Common Stock in certain
circumstances). The Rights Offering, however, is not conditioned upon any
minimum level of exercise of Rights by the Public. Consequently, there can be
no assurance that the Company will raise more than $185 million of gross
proceeds from the Rights Offering or that the Public will participate in the
Rights Offering. See "Risk Factors--Indefinite Amount and Use of Proceeds."
    
  The gross proceeds will be used in the following order of priority. The first
$25 million of gross proceeds, if any, received pursuant to the Rights Offering
from subscriptions by the Public will be retained by the Company for general
corporate purposes. Other than the first $25 million of gross proceeds received
from subscriptions by the Public, the gross proceeds of the Rights Offering
will be used to repay the $185 million aggregate principal amount of debt of
CGE and its subsidiaries consisting of (i) the $125 million CGE Note and (ii)
the $60 million Anjou Note. The Company has taken all necessary legal actions
in order to repay such indebtedness, including obtaining any required waivers.
Any remaining proceeds will be retained for general corporate purposes.
 
  The CGE Note is an unsecured facility bearing interest at a rate based upon
one, two, three or six-month LIBOR, as selected by the Company, plus 1.25% and
has a final maturity of June 15, 2001. The loan contains certain financial and
other restrictive covenants with respect to the Company relating to, among
other things, the maintenance of certain financial ratios, and restrictions on
the sale of assets and the payment of dividends on or the redemption,
repurchase, acquisition or retirement of securities of the Company or its
subsidiaries. The CGE Note also contains a covenant requiring CGE to remain the
largest stockholder of the Company and maintain at least a 26% voting interest
in the Company's common stock.
 
  The Anjou Note is an unsecured revolving credit facility that matures on
August 2, 2003 and bears interest at LIBOR plus 0.6%. The Anjou Note also
contains a covenant requiring CGE to remain the largest stockholder of the
Company and maintain at least a 40% voting interest in the Company's common
stock.
 
                                       28
<PAGE>
 
            PRICE RANGE OF CLASS A COMMON STOCK AND DIVIDEND POLICY
 
  The Class A Common Stock began trading publicly on August 10, 1989 at an
initial public offering price of $17.00 per share and is traded on the AMEX
under the symbol "AWT." On      , 1997 there were   holders of record of the
Company's Class A Common Stock.
 
  The following table sets forth, for the fiscal periods shown, the high and
low sales prices for the Class A Common Stock as reported on the AMEX.
 
<TABLE>   
<CAPTION>
                                                                   HIGH   LOW
                                                                  ------ ------
       <S>                                                        <C>    <C>
       Fiscal 1996
         First Quarter........................................... $8.125 $4.000
         Second Quarter.......................................... $7.000 $5.250
         Third Quarter........................................... $6.750 $4.969
         Fourth Quarter.......................................... $9.500 $5.500
       Fiscal 1997
         First Quarter........................................... $7.500 $5.000
         Second Quarter.......................................... $6.500 $4.500
         Third Quarter........................................... $5.250 $2.250
         Fourth Quarter.......................................... $4.063 $1.250
       Fiscal 1998
         First Quarter (through December 19, 1997)............... $1.688 $1.063
</TABLE>    
 
  On September 23, 1997, the last trading day immediately prior to the
announcement of the Recapitalization, the closing price per share on the AMEX
for the Class A Common Stock was $1.50. On      , 1997, the day before the
effective date of the Registration Statement of which this Prospectus forms a
part, the closing price per share on the AMEX for the Class A Common Stock was
$    .
   
  The Company did not declare any cash dividends on its Class A Common Stock
during fiscal 1996 and fiscal 1997. Pursuant to the Bank Credit Facility, the
Company is prohibited from declaring or paying cash dividends on its Class A
Common Stock or making other restricted payments, as defined in the Bank Credit
Facility. The Company currently intends to retain its earnings, if any, to
finance the growth and development of its business and to repay outstanding
indebtedness and does not anticipate paying cash dividends on its Class A
Common Stock in the foreseeable future.     
 
                                       29
<PAGE>
 
                                   DILUTION
   
  The Company currently has a negative tangible net worth. The negative net
tangible book value of the shares of Class A Common Stock as of October 31,
1997 was approximately ($353,982,000) or ($11.06) per share which will change
to ($295,082,000) or ($4.45) per share upon consummation of the Exchange
(assuming an exchange price of $1.75 per share and assuming the payment of
$1,100,000 of preferred stock dividends in arrears at October 31, 1997). "Net
tangible book value" per share represents the amount of total tangible assets
(total assets less intangible assets) less total liabilities, divided by the
number of shares of Class A Common Stock outstanding. Assuming the Requisite
Consents are obtained and a Subscription Price of $1.75 per share, (i) after
giving effect to the sale by the Company of approximately 105,714,000 shares
of Class A Common Stock in the case of the "Minimum Subscription," such that
the Company will receive gross proceeds of $185 million, and after deducting
the estimated offering expenses, the pro forma negative net tangible book
value of the Company as of October 31, 1997 would have been approximately
($115,082,000), or ($0.67) per share, representing an immediate and
substantial dilution of ($2.42) per share and (ii) after giving effect to the
sale by the Company of approximately 120,000,000 shares of Class A Common
Stock in the case of the "Maximum Subscription," such that the Company will
receive gross proceeds of $210 million, and after deducting the estimated
offering expenses, the pro forma negative net tangible book value of the
Company as of October 31, 1997 would have been approximately ($90,082,000), or
($0.48) per share, representing an immediate and substantial dilution of
($2.23) per share, in each case, in respect of the Subscription Price for
shares of Class A Common Stock purchased pursuant to the Rights Offering. The
following table illustrates the per share dilution:     
 
<TABLE>   
<CAPTION>
                                                   DILUTION        DILUTION
                                                    MINIMUM         MAXIMUM
                                                 SUBSCRIPTION    SUBSCRIPTION
                                                 --------------  --------------
<S>                                              <C>     <C>     <C>     <C>
Subscription Price..............................         $ 1.75          $ 1.75
  Net negative tangible book value per share
   before Rights Offering, as adjusted for the
   Exchange(1).................................. $(4.45)         $(4.45)
  Increase per share attributable to
   stockholders exercising Rights...............   3.78            3.97
                                                 ------          ------
Pro forma net tangible book value per share
 after Rights Offering..........................          (0.67)          (0.48)
                                                         ------          ------
Dilution to stockholders exercising Rights(2)...         $(2.42)         $(2.23)
                                                         ======          ======
</TABLE>    
- --------
   
(1) Reflects the issuance of approximately 34,286,000 shares of Class A Common
    Stock for $60 million of Series A Preferred Stock at an exchange price
    equal to $1.75 per share and payment of $1,100,000 of preferred stock
    dividends in arrears at October 31, 1997.     
(2) Dilution is determined by subtracting the pro forma negative net tangible
    book value per share from the Subscription Price paid by an investor for a
    share of Class A Common Stock in the Rights Offering.
 
                                      30
<PAGE>
 
                             THE RECAPITALIZATION
 
GENERAL
 
  On September 24, 1997, the Company, CGE and Anjou entered into the
Recapitalization Agreement, whereby the Company would restructure its debt and
retire all of the outstanding shares of Series A Preferred Stock. The
Recapitalization is comprised of two primary elements: (i) the Exchange and
(ii) the Rights Offering. Pursuant to the Recapitalization Agreement, the
Company, CGE and Anjou also entered into agreements with respect to certain
other matters, including the Consent Solicitation, the Charter Amendment and
CGE's intent to work with the Company to enhance the Company's participation
in the emerging privatization market in the wastewater management industry.
See "--Consent Solicitation" and "--Other." Certain of the terms of the
Recapitalization are summarized below. Such summary is qualified in its
entirety by reference to the Recapitalization Agreement which is an exhibit to
the Registration Statement of which this Prospectus forms a part.
 
BACKGROUND
   
  In early 1997, management of the Company determined to consider a
recapitalization of the Company. On January 28, 1997, the Company retained
Lazard Freres & Co. LLC ("Lazard Freres") to explore various strategic
alternatives relating to a recapitalization of the Company and a possible
disposition of Research-Cottrell. Lazard Freres subsequently proposed a rights
offering structure to the Company's management. Shortly thereafter, management
of the Company approached CGE with the concept of a rights offering, at which
time CGE determined to retain its own legal and financial advisors for
purposes of entering into discussions with the Board of Directors of the
Company with respect to a recapitalization.     
 
  In a special meeting of the Board of Directors of the Company on June 23,
1997, the Board of Directors decided, in anticipation of entering into
discussions with CGE and in accordance with the Investment Agreement, that Ms.
Carol Lynn Green and Lieutenant General John W. Morris, the Company's
directors not affiliated with CGE, would be appointed as the Special Committee
to consider any recapitalization proposal by CGE.
 
  Shortly thereafter, the Special Committee retained Wasserstein Perella &
Co., Inc. ("WP&Co.") as its financial advisor and Fried, Frank, Harris,
Shriver & Jacobson ("Fried, Frank") as its special legal counsel, having
previously identified and interviewed prospective independent advisors to
assist in its assignment.
 
 The July 10 Proposal
 
  On July 10, 1997, CGE and its financial advisor, Houlihan, Lokey, Howard &
Zukin Capital ("Houlihan Lokey"), and its special legal counsel, Skadden,
Arps, Slate, Meagher & Flom LLP ("Skadden, Arps") met with and presented a
recapitalization proposal (the "July 10 Proposal") to the Special Committee
(and its advisors), other members of the Company's Board of Directors, the
Company's outside legal counsel, Davis Polk & Wardwell, and its financial
advisor, Lazard Freres. CGE invited questions or discussions about any aspects
of its proposal at any stage of the Special Committee's study of the proposal.
 
  The July 10 Proposal consisted of an exchange of CGE's Series A Preferred
Stock for Class A Common Stock at a conversion price of $1.75 per share with a
concurrent rights offering for a new series of convertible preferred stock
(the "Convertible Preferred Stock"). Each holder of Class A Common Stock,
including CGE, would have received, for every 0.700 share of Class A Common
Stock owned, a nontransferable right to acquire one share of Convertible
Preferred Stock at a subscription price of $2.00 per share. The Convertible
Preferred Stock would have been immediately convertible into the Company's
Class A Common Stock on a one-for-one basis at a conversion price of $2.00 per
share, with the conversion price subsequently reset two years from the date of
issuance based upon the then trading price of the Class A Common Stock,
subject to a maximum conversion price of $2.00 per share and a minimum
conversion price of $.50 per share. The Convertible Preferred Stock would have
carried a dividend rate of 8% on its par value per share to be paid in kind
and would have
 
                                      31
<PAGE>
 
been mandatorily converted by the Company into Class A Common Stock three
years from the date of issuance or upon a change in control of the Company at
the conversion price in effect on such date.
 
  The Rights Offering under the July 10 Proposal would have permitted
stockholders (including CGE) exercising their rights to subscribe for
additional underlying shares available as a result of the unexercised rights.
 
  CGE's participation in the July 10 Proposal's rights offering was
conditioned upon the Special Committee's approval of (i) the exchange of CGE's
Series A Preferred Stock for Class A Common Stock at an exchange price of
$1.75 per share, (ii) successful completion of the Consent Solicitation to
amend the Indenture governing the Convertible Debentures to eliminate the
Change of Control Provision and (iii) an amendment to Section 5.6 of the
Investment Agreement to clarify that it shall not apply to CGE's existing
investments in OTV-Kruger, Inc., Consumers Water Company, Philadelphia
Suburban Corporation and to similar water-utility-related investments,
acquisitions or activities by CGE or its affiliates.
 
  Following the July 10, 1997 meeting, WP&Co. conducted financial due
diligence and Fried, Frank conducted legal due diligence with respect to the
Company on behalf of the Special Committee. During the course of this review,
the Special Committee and its advisors met numerous times, both collectively
and in working groups, to consider business and financial information
collected independently, and from the Company and CGE and their respective
advisors, and to analyze the July 10 Proposal and alternatives thereto. During
the course of its review in July and August, the Special Committee determined
that certain alternatives to the July 10 Proposal, including various break-up
scenarios, a Chapter 11 reorganization, an immediate liquidation of the
Company upon dissolution, a sale of the Company to a third party, and a CGE
debt to equity exchange, alone would have been either undesirable or likely to
have been less attractive to the Public stockholders than other alternatives
potentially available to them.
 
  On August 20, 1997, the financial and legal advisors of the Special
Committee met with the financial and legal advisors of CGE to discuss the
proposed terms of the recapitalization and to present the preliminary views of
the Special Committee with respect to the July 10 Proposal. On behalf of the
Special Committee, Fried, Frank and WP&Co. communicated the Committee's
rejection of the July 10 Proposal on several bases, including the lack of
business resolutions to the Company's business problems, concerns over the
structure of the July 10 Proposal's rights offering due to such factors as the
rights' nontransferability and its pricing, and the combined adverse dilutive
effect of the reset mechanism and payment-in-kind provisions on the Public
stockholders' share ownership in the Company. The advisors to the Special
Committee proposed to the CGE advisors that CGE make a tender offer for the
Public stockholders' Class A Common Stock. The CGE advisors expressed doubt
concerning CGE's receptivity to this alternative but indicated CGE's
willingness to listen to all of the Special Committee's ideas and proposals.
The financial advisors to the Special Committee and to CGE agreed that, based
upon their respective determinations of the Company's enterprise value, the
Class A Common Stock currently had no intrinsic value. The respective advisors
agreed that a meeting between the Special Committee and CGE's representative,
Mr. Francois Jobard, Charge de Mission a la Direction Financiere of CGE,
should be organized.
 
  The Special Committee and Mr. Jobard agreed to meet on September 3, 1997. On
August 29, 1997, and in response to his request, the Special Committee wrote
Mr. Jobard, among other things, to identify three objectives for any
recapitalization proposal to be acceptable to the Special Committee: (i) the
Company must be placed on a financially viable basis, (ii) CGE and the Company
must establish a demonstrably effective long-term business strategy for the
Company and (iii) Public stockholders must have liquidity in a fair, active
and reliable trading market.
 
  On September 3 and 4, CGE, the Special Committee and their respective
advisors met to discuss the July 10 Proposal. The Special Committee stated
that the July 10 Proposal was unacceptable, citing among other things, its
belief that the terms of the rights offering made it unlikely that Public
stockholders would have participated and that the reset and payment-in-kind
provisions of any shares of Convertible Preferred Stock acquired by CGE could
have had a potentially high dilutive impact on the Public stockholders, and
under certain
 
                                      32
<PAGE>
 
circumstances, could have resulted in Public ownership of the Class A Common
Stock of as low as 3.4%. Moreover, the July 10 Proposal provided for the
reduction of the Company's debt burden by as much as $180 million with full
Public participation in the rights offering or, assuming less than full Public
participation, if CGE exercised its oversubscription privilege in the rights
offering; however, CGE made no commitment to do so.
 
  The Special Committee also noted the absence in the July 10 Proposal of any
specific business commitment of CGE to the Company, observing that it provided
no mechanism for CGE to fund, or assist the Company in funding, future capital
expenditures such as those necessary to successfully compete in the
privatization of the United States municipal wastewater treatment market (to
the extent such a market should emerge) nor did it address CGE's role in
assisting the Company to develop new and more effective business strategies.
 
  In response, the Special Committee instead proposed that CGE consider a two-
step acquisition consisting of a cash tender offer followed by a merger
pursuant to which CGE would acquire 100% of the Class A Common Stock of the
Company. Mr. Jobard, however, informed the Special Committee that CGE believed
that in order to successfully accomplish a two-step acquisition, the offer
price would have to be close to or above the market price of the Class A
Common Stock and that because the market price of the Class A Common Stock was
so far above what CGE believed the intrinsic value of the Class A Common Stock
to be, a tender offer, in CGE's view, was not financially prudent. Moreover,
CGE rejected this approach on the basis that its funds would not have gone
toward the Company's capital needs and instead would only have been additive
to such needs. While the two parties discussed possible elements of a common
understanding affecting the Company's business need for support and improved
business strategy, no consensus was reached. Mr. Jobard inquired at what price
the Special Committee would consider a cash tender offer. The Special
Committee indicated it would consider a cash tender offer proposal from CGE at
$3.00 per share. Mr. Jobard rejected any further effort by the Special
Committee to pursue a CGE acquisition proposal, but instead requested a
counterproposal to be based on a structure similar to that set forth in the
July 10 Proposal.
 
 The September 4 Proposal
 
  On September 4, 1997, the Special Committee made a proposal to CGE (the
"September 4 Proposal") pursuant to which CGE would exchange the Series A
Preferred Stock, the Anjou Note and the CGE Note for Class A Common Stock, at
a price of $3.35 per share, and the Public would receive warrants as a
dividend. Under the September 4 Proposal, the initial Public ownership of
Class A Common Stock would have been approximately 18%, with the Public
receiving freely transferable warrants exercisable at the price at which CGE
would have converted its debt to equity in order to enable the Public over
time to increase its ownership to approximately 35% of the Class A Common
Stock. In addition, the Special Committee proposed that CGE agree to
repurchase shares of Class A Common Stock held by the Public in up to three
future "Dutch auction" tender offers in the event the average closing price of
the Class A Common Stock fell below a determined threshold preceding any of
the first three anniversaries of the recapitalization. The Special Committee
also proposed that CGE agree to offer to purchase all outstanding shares of
Class A Common Stock held by the Public, at a price to be independently agreed
upon at a later date, if the Public's percentage ownership or the market
capitalization of the Class A Common Stock held by the Public fell below a
determined threshold or certain other events occurred.
 
  The September 4 Proposal raised certain strategic business issues which the
Special Committee explained were important to its conception of fairness. For
example, the September 4 Proposal, among other things, called for CGE to
commit to provide a substantial amount of project investments, guarantees and
other capital support and for CGE to provide management to the Company to
enhance the Company's business efforts. The September 4 Proposal also called
for CGE to reaffirm the language of Section 5.6 of the Investment Agreement
that designates the Company as CGE's exclusive vehicle in the United States
with respect to water and wastewater management and air pollution activities.
The September 4 Proposal further would have required the Company to conduct a
regular stockholder relations program and to promote analyst coverage.
 
 The September 5 Proposal
 
  CGE rejected the Special Committee's September 4 Proposal primarily because
(i) the implied price at which CGE would exchange its securities into the
Company's Class A Common Stock was in excess of the
 
                                      33
<PAGE>
 
intrinsic value of such stock, (ii) the proposed warrants were being given to
the Public for no consideration, (iii) CGE did not consider it to be an
appropriate balance to provide only the Public with downside price protection,
and (iv) CGE was not prepared to commit now to the funding of unidentified
projects at an unknown time in the future. On September 5, 1997, CGE provided
a counterproposal (the "September 5 Proposal") to the Special Committee.
Pursuant to the September 5 Proposal, CGE would exchange approximately $105
million of debt of CGE ("CGE Debt"), consisting of the CGE Note and the Anjou
Note, into shares of Class A Common Stock at an exchange price of $1.75 per
share, and would exchange the remaining approximately $80 million of CGE Debt
as well as the $60 million of Series A Preferred Stock into a new series of
cumulative redeemable pay-in-kind ("PIK") preferred stock which would pay
market rate dividends in kind for an agreed upon period of time and be
mandatorily redeemed at an agreed upon date. This proposal, in CGE's view,
would have resulted in the Company exchanging its $245 million of cash pay
obligations into equity securities with no cash interest or cash dividend
payment obligations, and would have resulted in Public stockholders initially
having a 20% ownership interest in the Class A Common Stock of the Company.
CGE agreed to consider the strategic business points raised in the Special
Committee's September 4 Proposal, including CGE's working with the Company to
formulate a focused business strategy and implementing a process of making
available funding of capital expenditures for the Company's business on a
project-by-project basis, if commercially reasonable. The September 5 Proposal
left the determination of holding analysts conferences and other such programs
to the discretion of the Company's management. Furthermore, if the Company did
not obtain the consent of the Convertible Debenture holders to eliminate the
Change of Control Provision from the Indenture, the September 5 Proposal
called for the Company to satisfy the Change of Control Provision by
delivering Class A Common Stock in lieu of cash to the Convertible Debenture
holders in accordance with the terms of the Indenture.
 
 The September 8 Proposal
 
  The Special Committee rejected CGE's September 5 Proposal in part because
the Special Committee believed that it did not adequately resolve problems
with the Company's capital structure and would have left Public stockholders
with inadequate value after taking into account the financial implications of
the $140 million of manditorily redeemable PIK preferred stock. The September
5 Proposal also lacked, in the Special Committee's view, a means by which the
Public stockholders could further participate in the Company's future
potential, beyond their 20% ownership interest, among other things. In
addition, the Special Committee disfavored CGE's approach with respect to the
Convertible Debentures because of its potentially dilutive impact on the
minority stockholders in the event the Consent Solicitation failed.
 
  On September 8, 1997, the Special Committee and its advisors suggested
another proposal in anticipation of a meeting with CGE and its advisors (the
"September 8 Proposal") that modified the exchange provisions of CGE's
September 5 Proposal and provided for the issuance of two series of freely
transferable warrants. The September 8 Proposal called for the exchange of
approximately $91 million of CGE Debt into shares of Class A Common Stock at
an exchange price of $2.50 per share and the exchange of approximately $94
million of CGE Debt into shares of a new issue of nonvoting convertible
preferred stock (the "Exchange Preferred Stock") at an exchange price of $2.50
per share. The Exchange Preferred Stock would have been convertible into Class
A Common Stock in certain circumstances. In addition, CGE would have
separately exchanged its Series A Preferred Stock for a new series of
redeemable participating preferred stock (the "Participating Preferred Stock")
that would have paid market rate cash dividends commencing at such time as the
Company achieved an agreed upon level of earnings before taxes excluding
extraordinary items for any four consecutive profitable quarters, and which
would have been mandatorily redeemed on the tenth anniversary following
issuance. Immediately after the exchange and assuming conversion of the
Exchange Preferred Stock into Class A Common Stock, CGE would have
beneficially owned approximately 83% of the Class A Common Stock.
 
  In addition to the exchange of the CGE Note, Anjou Note and Series A
Preferred Stock, the September 8 Proposal provided that the Company would
issue to Public stockholders two series of freely tradable Warrants. The first
series of warrants (the "Recap Warrants") would have entitled the Public to
purchase 10% of the Class A Common Stock at an exercise price of $2.50 per
share and would have expired eighteen months from the date of issuance. The
Recap Warrants were intended to enable the Public to fund the recapitalization
on a cost basis
 
                                      34
<PAGE>
 
similar to CGE. Upon exercise of the Recap Warrants and assuming conversion of
the Exchange Preferred Stock into Class A Common Stock, the Public would have
owned up to approximately 27% of the outstanding shares of Class A Common
Stock. The second series of warrants (the "Term Warrants") would have entitled
the Public to purchase an additional 8% of the Class A Common Stock at an
exercise price representing a premium to the exercise price of the Recap
Warrants. The Term Warrants would have expired five years from the date of
issuance and were intended to enable the Public to participate in the long-
term appreciation potential of the Company and to provide the Company with
capital for project and infrastructure development. Upon exercise of the Recap
Warrants and Term Warrants and assuming conversion of the Exchange Preferred
Stock, the Public would have owned up to approximately 35% of the Class A
Common Stock. Proceeds from the exercise of the Recap and Term Warrants would
have been retained by the Company to fund working capital requirements and
capital expenditures.
 
  The September 8 Proposal also set forth several strategic business issues.
The September 8 Proposal would have required CGE to defer an acquisition of
the Company for five years from the date of the recapitalization to provide
sufficient time for the recapitalization to succeed. The September 8 Proposal
also called for approval of the recapitalization by a majority of the
outstanding shares of publicly-held Class A Common Stock in addition to a
majority of the outstanding shares of Class A Common Stock and Series A
Preferred Stock, and repeated requirements for the establishment of a
stockholder relations program and efforts to improve analyst coverage. The
September 8 Proposal further called for, among other things, the creation of
the Business Planning Committee comprised of three CGE appointed directors and
two directors who are independent and unaffiliated with CGE to review business
strategies prepared by the Company's senior management and, as appropriate,
make recommendations on the formulation and implementation of those strategies
that would have as their objective increasing stockholder value. Among other
things, for example, the Business Planning Committee would have identified
areas where CGE's water management expertise and resources and the Company's
business could be effectively integrated. The Business Planning Committee
would have remained in place through the end of fiscal year 1999.
 
  The September 8 Proposal also repeated the requirement that CGE reaffirm
that the Company be CGE's exclusive North American vehicle for water-related
investments, including water utilities, but provided for certain
clarifications to the Investment Agreement with respect to CGE investments
prior to execution of the Investment Agreement. The September 8 Proposal
reiterated CGE's intention of implementing a process of making available
funding of capital expenditures entered into in the course of the Company's
business through an off-balance sheet vehicle or entity, but would have
required that the Company have the right of first investment for any such
capital expenditures and the opportunity to co-invest in the equity of all
Company related projects otherwise sponsored by CGE, to the extent the Company
had the resources necessary to do so, if and when such vehicle was realized.
 
  CGE rejected the September 8 Proposal, reiterating that it would not accept
a proposal which it believed was not supportable on a valuation basis, and
provided the Company's Class A Common stockholders with, in its view, zero
cost warrants, and required CGE to provide significant financial commitments
on the Company's behalf. CGE returned to its September 5 Proposal, pursuant to
which it would have converted the CGE Note and Anjou Note into Class A Common
Stock at a conversion price of $1.75 per share and exchanged its Series A
Preferred Stock for newly issued mandatorily redeemable PIK preferred stock.
CGE disagreed with the concept of requiring Public stockholder approval of a
recapitalization agreement by a majority of the outstanding shares of
publicly-held Class A Common Stock based on its analysis of applicable law.
Among other things, CGE expressed a willingness to consider offering two
series of warrants to Public stockholders. CGE acknowledged the Special
Committee's concern that a funding vehicle not compete with the Company, but
expressed concerns that the Special Committee's framework would have deterred
third party investors. CGE objected to the Special Committee's position that
Section 5.6 of the Investment Agreement applied to water utilities businesses
except for certain pre-existing CGE investments, since such position
conflicted, in CGE's view, with the history of the negotiations of the
Investment Agreement. CGE reiterated its position that water utility
investments were never intended to be encompassed by the Investment Agreement.
 
 
                                      35
<PAGE>
 
 The September 9 Proposal
 
  On September 9, 1997, the Special Committee suggested a compromise proposal
(the "September 9 Proposal") pursuant to which CGE would have exchanged the
CGE Note and the Anjou Note for Class A Common Stock at an exchange price of
$2.25 per share. The exchange under the September 9 Proposal was conditioned
on receiving the Requisite Consents to amend the Indenture. In the event the
Consent Solicitation was unsuccessful, the Special Committee called for the
exchange of the CGE Note and the Anjou Note to be handled in the same manner
as in its September 8 Proposal. Under the September 9 Proposal, the Series A
Preferred Stock would have been exchanged for a new series of preferred stock
that would have been noncumulative participating preferred stock for three
years and thereafter would have been cumulative preferred stock with a cash
dividend. The September 9 Proposal also provided that Public stockholders
would receive two series of warrants, entitling them to purchase shares of
Class A Common Stock at a premium to the above- referenced exchange price,
such that after full exercise of the warrants by the Public, the Public would
own 35% of the Class A Common Stock. The Special Committee also sought
protection against a short-form merger of the Company with or into CGE or an
affiliate for a period of five years following the recapitalization; agreed to
study further the vote requirements that should apply with respect to the
Company's stockholders; repeated requirements for establishment of a policy
requiring the Company to hold semi-annual analyst conferences, conduct
conference calls concurrent with earnings releases, promote analyst coverage
of its stock and initiate a stockholder relations program; reiterated the
establishment of the Business Planning Committee; and detailed further how a
funding vehicle would not compete with the Company. The Special Committee also
undertook to study further the background of Section 5.6 of the Investment
Agreement.
 
 The September 10 Proposal
 
  On September 10, 1997, CGE rejected the September 9 Proposal and made a
revised proposal to the Special Committee (the "September 10 Proposal"). The
September 10 Proposal provided that CGE would exchange the Anjou Note and the
CGE Note for Class A Common Stock at an exchange price of $2.00 per share and
would exchange the Series A Preferred Stock into shares of newly issued PIK
preferred stock which, for the first five years, would have paid dividends at
the rate of 7% in cash or 9% in kind at the Company's option and after five
years, would have paid 7% dividends in cash. CGE's proposal also provided for
the issuance of two series of warrants to the Public stockholders: (i)
warrants entitling the holders to acquire seven million shares of Class A
Common Stock at an exercise price of $2.75 per share and expiring two years
from the date of issuance and (ii) warrants entitling holders to acquire seven
million shares of Class A Common Stock at an exercise price of $4.00 per share
and expiring five years from the date of issuance. The exercise price of the
warrants implied a 17% annual rate of accretion. Assuming full exercise of the
warrants by the Public, Public ownership in the Company would have increased
to approximately 23%.
 
  In addition, under the terms of the September 10 Proposal, CGE reiterated
its willingness to explore a process of making available funding of capital
expenditures for the Company's business through an off-balance sheet vehicle
or entity on a project-by-project basis if commercially reasonable but
remained resistant to any firm commitment to set dollar amounts or specific
terms of a capital funding program. CGE required that the recapitalization be
contingent upon the resolution of interpretive issues with respect to Section
5.6 of the Investment Agreement through either a non-compete agreement (based
on the Company's existing business) or an amendment to Section 5.6 of the
Investment Agreement to make clear its inapplicability, in CGE's view, to
water utility businesses and to certain businesses in which CGE had pre-1994
investments. CGE further offered to agree not to conduct a short-form merger
of the Company prior to the eighteen-month anniversary of a recapitalization
without the prior consent of the Company's Independent Directors (as defined
in the Investment Agreement). CGE rejected the idea of requiring Public
stockholder approval of a recapitalization agreement by a majority of the
outstanding shares of publicly-held Class A Common Stock.
 
 The September 12 Proposal
 
  On September 12, 1997, the Special Committee responded to CGE's September 10
Proposal by reiterating its offer to exchange the CGE Note and the Anjou Note
for a combination of Class A Common Stock and newly
 
                                      36
<PAGE>
 
issued preferred stock at an exchange price of $2.25 per share and to issue to
Public stockholders two series of warrants to acquire shares of Class A Common
Stock (the "September 12 Proposal"). The preferred stock issuable upon
exchange of the CGE Note and the Anjou Note under the September 12 Proposal
contained the same features as the Exchange Preferred Stock issuable upon the
exchange of the CGE Note and Anjou Note under the September 8 Proposal.
 
  The September 12 Proposal further provided for the exchange of CGE's Series
A Preferred Stock into shares of newly issued noncumulative preferred stock
(the "New Preferred Stock") that would have paid 7% cash dividends or 9%
dividends in-kind, at the option of the Company. The New Preferred Stock was
exchangeable, at the option of the Company, into subordinated debt of the
Company, provided that a certain financial ratio was satisfied.
 
  The September 12 Proposal further called for Public stockholders to receive
two series of freely tradable warrants to acquire shares of Class A Common
Stock. The warrants to be issued under the September 12 Proposal contained
similar expiration terms as the warrants to be issued under the September 9
Proposal of the Special Committee. The first series of warrants (the "Recap
Warrants") would have entitled the Public to purchase 11.35 million shares of
Class A Common Stock at an exercise price of $2.72 per share and would have
expired two years from the date of issuance. The second series of warrants
(the "Market Warrants") would have entitled the Public to purchase 11.35
million shares of Class A Common Stock at an exercise price of $3.62 per
share, provided that the exercise price of the Market Warrants would be
adjusted downward by the aggregate amount of dividends received by CGE on the
New Preferred Stock through the third anniversary of issuance, and would have
expired five years from the date of issuance. Recap Warrants not exercised
prior to their expiration would have automatically converted into an
equivalent amount of additional Market Warrants. Upon exercise of the Recap
Warrants and Market Warrants and assuming conversion of the Exchange Preferred
Stock into Class A Common Stock, the Public would have owned up to
approximately 30% of the outstanding Class A Common Stock of the Company.
Proceeds from the exercise of the Recap Warrants and Market Warrants would
have been retained by the Company to fund working capital requirements and
capital expenditures.
 
  The September 12 Proposal further required CGE, Company management and the
Special Committee to commence negotiations, within fifteen days of agreement
on the terms of the recapitalization, on a process whereby CGE would make
available guarantees and funding of capital expenditures enabling the Company,
on an exclusive basis and through one or more off-balance sheet vehicles or
entities on a project-by-project basis, to bid on and obtain management and
other project related contracts. The September 12 Proposal further required
that by the closing of the recapitalization, CGE and the Company would agree
on the terms of such funding process which would remain in place for a period
of five years following the date of the recapitalization.
 
  The September 12 Proposal also contemplated the amendment of Section 5.6 of
the Investment Agreement (i) to provide that the exclusivity clause would not
apply to privately-owned (versus government or non-profit majority owned or
operated) drinking water activities or investments, including Philadelphia
Suburban and Consumers Water, (ii) to clarify that the exclusivity clause
would cover all other CGE North American air and water business activities
and/or other investments, and (iii) to indicate that CGE and its affiliates
would not compete with the Company (including through its investment in OTV-
Kruger) except with respect to privately-owned drinking water activities or
investments. The amendment of Section 5.6 of the Investment Agreement was
conditioned upon (i) the Special Committee's confirmation that it (a) would
not have been inconsistent with the intent of the parties to the Investment
Agreement and (b) would not have represented a competitive conflict with the
Company based upon its current business plans, and (ii) the Special
Committee's satisfaction with the terms of the off-balance sheet and/or other
funding process to be established.
 
  With respect to other strategic issues, the September 12 Proposal required
that CGE agree not to acquire the Company through a short-form merger through
the fifth anniversary of the recapitalization, repeated the language of
earlier proposals for a policy under which the Company would hold semi-annual
analyst conferences, conduct conference calls concurrent with earnings
releases, promote analyst coverage of its stock and initiate a stockholder
relations program and continued to call for the creation of a Business
Planning Committee as
 
                                      37
<PAGE>
 
provided in the September 8 Proposal. Under the September 12 Proposal, the
Special Committee further withdrew its earlier proposal to require approval of
the recapitalization by a majority of the outstanding shares of the publicly-
held Class A Common Stock, contemplating instead stockholder consent (without
a meeting) under the standard Delaware statutory vote to increase the
authorized number of shares of the Common Stock of the Company.
 
 The Form 10-Q for the Quarter Ended July 31, 1997
 
  On September 15, 1997, the Company filed with the Commission its Form 10-Q
for the quarter ended July 31, 1997 (the "10-Q"). Among other things, the 10-Q
addressed the Company's deteriorating operating results; the establishment of
the Special Committee and the fact that discussions were being held regarding
a range of possible debt restructuring or other recapitalization alternatives
but that an agreement had not yet been reached; the delisting of the Company's
Convertible Debentures from the Nasdaq SmallCap Market; the possible need to
obtain an amendment of the Bank Credit Facility (or other long-term debt or
other obligations) or waivers in the event that the Company was in violation
of covenants under the Bank Credit Facility at October 31, 1997, and the
expectation that the Lending Banks would request additional credit support
from CGE and certain other changes to the Bank Credit Facility as a condition
to a waiver, which support CGE was not prepared to provide pending the outcome
of its discussions with the Special Committee; and the notification from USF&G
that it would suspend the renewal and issuance of new bid and performance
bonds as of September 30, 1997, unless it received certain indemnification
from CGE or Anjou, which indemnification CGE was not prepared to provide
pending the outcome of its discussions with the Special Committee. The 10-Q
also stated the possibility of a material adverse effect on the business
prospects and financial condition of the Company in the event the Company was
unsuccessful in reaching an agreement on the terms of a possible debt
restructuring or other recapitalization transaction or satisfactory
arrangements with the Lending Banks or USF&G. On September 16, 1997, the AMEX
temporarily suspended trading on that day of the Company's Class A Common
Stock pending review of the Company's earnings release. The closing price of
the Company's Class A Common Stock dropped from $3.125 on September 15, 1997
to $1.438 on September 17, 1997.
 
  During the week of September 15, 1997, the Special Committee and its
advisors received additional information on the status of negotiations among
the Company, CGE and representatives of the Lending Banks and USF&G. CGE and
the Special Committee and its advisors also were apprised of the status of
certain of the Company's management contracts with its customers and potential
adverse impact of the Company's business prospects and financial condition, as
disclosed in the 10-Q, on the continuation of such contracts.
 
 The September 18 Proposal
 
  On September 17, 1997, Mr. Jobard sent a letter to the Special Committee
summarizing the position of CGE on the recapitalization negotiations to date
and underscoring CGE's desire to complete discussions expeditiously. On
September 18, the Special Committee responded to Mr. Jobard's letter and
stated that it too was looking forward to resuming discussions. Mr. Jobard and
the Special Committee met that night at dinner to confirm this mutual
objective and review the history of the negotiations.
 
  On September 18, 1997, CGE sent a new proposal to the Special Committee (the
"September 18 Proposal") which reintroducted the concept of a rights offering.
Under the September 18 Proposal, following the exchange by CGE of $60 million
of Series A Preferred Stock for Class A Common Stock, each holder of Class A
Common Stock would have received for every 0.5525 share of Class A Common
Stock a transferable right to acquire one share of Class A Common Stock at a
subscription price of $1.75 per share. The September 18 Proposal also included
an oversubscription privilege which would have allowed all stockholders
exercising rights in the rights offering to subscribe for additional
underlying shares of Class A Common Stock available as a result of unexercised
rights, if any. Assuming full participation of all holders of Class A Common
Stock in the rights offering, the gross proceeds to the Company from the
rights offering would have been approximately $210 million.
 
  Under the September 18 Proposal, CGE would have agreed to exercise its
oversubscription privilege in the rights offering to the extent required to
result in total proceeds available to repay the CGE Note and the Anjou
 
                                      38
<PAGE>
 
Note in the case that the Public invested less than $24 million, and in the
case that the Public invested $24 million or more, to the extent of $185
million less the amount invested by the Public over $24 million up to the
point the Public had invested $34 million. The first $24 million of proceeds
from the Public and all proceeds from the exercise of CGE's rights would have
been used to repay the CGE Note and the Anjou Note, with all additional
proceeds, if any, being used by the Company for general corporate purposes.
 
  The September 18 Proposal provided that CGE's offer to participate in the
rights offering was conditioned on the Special Committee's approval of: (i) a
separate exchange offer whereby CGE would exchange its $60 million of Series A
Preferred Stock for Class A Common Stock at an exchange price of $1.75 per
share, which newly issued shares of Class A Common Stock would be eligible to
participate in the rights offering, (ii) successful completion of the Consent
Solicitation to amend the Indenture governing the Convertible Debentures to
delete the Change of Control Provision, and (iii) an amendment to Section 5.6
of the Investment Agreement to clarify that it shall not apply to CGE's
existing investments in OTV-Kruger, Inc., Consumers Water Company and
Philadelphia Suburban Corporation and to any similar water utility-related
investments, acquisitions or activities by CGE or its affiliates. The
September 18 Proposal also provided that if the Requisite Consents were not
obtained in the Consent Solicitation, CGE would have received in the exchange
of its Series A Preferred Stock the number of shares of a new class of
nonvoting common stock required to limit its voting control of the Company to
74.0%. Other than voting rights, the rights and privileges of the nonvoting
common stock would have been identical to the Class A Common Stock and would
have automatically converted into Class A Common Stock upon expiration of the
Change of Control Provision.
 
  With respect to strategic issues, the September 18 Proposal adopted prior
Special Committee proposals for a Business Planning Committee and a policy
under which the Company would hold semi-annual analyst conferences, conduct
conference calls concurrent with earnings releases, promote analyst coverage
of its stock and initiate a stockholder relations program. The September 18
Proposal, in addition, provided that following the recapitalization, CGE would
assess various methods of funding capital expenditures on a project-by-project
basis and would give the Company the opportunity to co-invest in the equity of
such projects to the extent the Company had the resources necessary to do so.
CGE further would have agreed not to acquire the Company through a short-form
merger without the approval of the Independent Directors of the Company
through the eighteen-month anniversary of the recapitalization.
 
  On September 19 and 20, the Special Committee and its advisors and CGE and
its advisors continued negotiations. On September 19, the Special Committee
objected, among other things, to the pricing of the rights offering, the use
of Public stockholders' proceeds raised, if any, from the rights offering
being first used to pay down the Company's indebtedness to CGE and Anjou, and
the shortness of the period during which Public stockholders would not have
been subject to a short form merger transaction.
 
  On September 19, 1997, the Special Committee suggested that the terms of the
rights offering provide, among other things, that if Public stockholders did
not exercise at least 50% of their rights in the rights offering, the Public
stockholders' unexercised rights would "roll over" into a deferred
transferable right which, among other terms, could be extended for a period of
three years. The Special Committee, moreover, suggested a discount mechanism
for the rights offering and different pricing of CGE's exchange of its Series
A Preferred Stock. The Special Committee and CGE continued to discuss Section
5.6 of the Investment Agreement.
 
  CGE rejected the deferred rights mechanism and instead proposed that Public
stockholders exercising their rights in the rights offering receive a share of
a fixed pool of warrants, such warrants entitling the holders to acquire
additional shares of Class A Common Stock. Pursuant to its proposal, CGE
reaffirmed its proposed subscription price in the rights offering, and its
proposed exchange price for its Series A Preferred Stock, of $1.75 per share.
CGE also suggested that the first $10 million of any Public proceeds raised by
the rights offering be retained by the Company, with any additional Public
proceeds then being used to pay down the CGE Note and Anjou Note. CGE also
offered to extend to a period of up to two and one-half years, the period
during which it agreed not to acquire the Company through a short-form merger
without approval of the Independent Directors of the Company.
 
                                      39
<PAGE>
 
  On September 20, 1997, the Special Committee rejected CGE's proposed warrant
structure and expressed a willingness to consider a rights offering with a
minimum subscription price of $1.75, or an 18% discount from the market price
of the Class A Common Stock, whichever was higher, with the additional
requirement that CGE exchange its Series A Preferred Stock at an exchange
price equal to the subscription price and agree to subscribe, if necessary,
for unexercised rights sufficient to pay down the CGE Note and the Anjou Note.
The Special Committee also suggested a restructuring of the pool of warrants
to be issued to Public stockholders, including, among other things, the
ratable issuance of up to 10,000,000 warrants with an exercise price of $2.49.
The exercise price of the warrants was based on a 12.5% annual rate of
accretion. The Special Committee and CGE continued to discuss other terms,
including the use of Public proceeds, if any, raised from the rights offering
and limitations on CGE's ability to acquire the Company through a short-form
merger within a specified time period to be determined.
 
  CGE accepted the Special Committee's warrant formulation and sought a
ceiling price of $2.50 for the subscription price in the rights offering. CGE
also indicated a willingness to limit its ability to dilute the Public
stockholders by setting a cap on its own subscription rights at $185 million
in the rights offering. After additional meetings and discussions, the parties
reached an oral agreement in principle on the terms of the Recapitalization.
From September 21 to 24, CGE and the Special Committee (and their respective
advisors) negotiated the written terms of the Recapitalization Agreement.
 
 The Recapitalization Agreement
 
  In the afternoon of September 24, 1997, the Special Committee (i) determined
that the Recapitalization is fair to, and in the best interests of, the
Company and its stockholders (other than CGE and its subsidiaries) and (ii)
resolved to approve and recommend the Recapitalization Agreement and the
transactions contemplated thereby to the Board of Directors of the Company,
having taken into account, among other things, the written opinion of WP&Co.
to the effect that as of such date, and based upon and subject to the
assumptions and limitations set forth therein, the financial terms of the
Recapitalization Transactions (as defined in the opinion) taken as a whole
were fair to the holders of the Class A Common Stock (other than CGE and its
subsidiaries) from a financial point of view. Later that same day, the Special
Committee met with the Board of Directors of the Company. Following the report
of the Special Committee, the Board of Directors of the Company unanimously
(i) determined that the Recapitalization is fair to, and in the best interests
of, the Company and its stockholders and (ii) resolved to approve and adopt
the Recapitalization and the transactions contemplated thereby subject to the
terms and conditions thereof.
   
  On September 24, 1997, the Company, CGE and Anjou entered into the
Recapitalization Agreement. The Company and CGE issued a joint press release
announcing that they had entered into a definitive agreement with respect to
the recapitalization of the Company. On September 25, 1997, the Company issued
a press release supplementing the press release of September 24, 1997, for the
purpose of clarifying the effect of an amendment to the Indenture to eliminate
the Change of Control Provision.     
 
REASONS FOR THE RECAPITALIZATION
 
 Special Committee
 
  The Special Committee met with its financial and legal advisors on 18
different occasions from July 10, 1997 to September 24, 1997 to review the
July 10 Proposal, evaluate the Company and its financial and business
condition and its prospects, consider alternatives presented by its financial
and legal advisors and respond to alternative CGE proposals. CGE and the
Special Committee met on five different occasions during this time period and
its respective advisors had discussions in addition to these occasions. In
considering and evaluating recapitalization proposals, the Special Committee
considered a number of factors in reaching its decision. It did not quantify,
rank or otherwise assign relative weights to the factors discussed below.
 
  The Special Committee considered the business, results of operations,
financial condition, assets, liabilities, business strategy and prospects for
the Company. The members of the Committee were generally familiar in respect
of such matters and further informed themselves in the course of their
evaluation. Among other things,
 
                                      40
<PAGE>
 
the Special Committee considered the financial analysis of its financial
advisor, WP&Co., and its view that the common equity of the Company lacked any
intrinsic value at this time, the disappointing historical operations and
financial performance of the Company, the current condition of the business,
including the highly leveraged nature of its balance sheet, the content and
relative reliability of internal projections, management tenure at the
operating levels, the potential impact of the DOJ Investigation of certain
matters related to PSG, the status and prospects for Research-Cottrell, the
Company's standing with the Lending Banks and USF&G, the Company's overall
liquidity, and the impact of such matters on the Company's ability to meet its
customer's expectations and needs for current and future contracts.
   
  In reaching its decision, the Special Committee took into account the
opinion of WP&Co. which was delivered on September 24, 1997. WP&Co. advised
the Special Committee, subject to the assumptions and limitations described in
its opinion (including the limitation that WP&Co. is not opining as to any
individual term of the Recapitalization Agreement), that the financial terms
of the Recapitalization Agreement, taken as a whole, are fair from a financial
point of view to the Public stockholders. A copy of the opinion of WP&Co. is
attached as Annex A to this Prospectus. Such opinion should be read in its
entirety for a description of the opinion expressed, procedures followed,
matters considered and limitations of review undertaken in connection with
such opinion. The Special Committee considered such opinion and the
presentation made by WP&Co. on September 24, 1997 to support its decision as
well as the multiple alternatives considered and rejected by WP&Co. and the
Special Committee.     
 
  The Recapitalization Agreement, in the Special Committee's view, was reached
after long, difficult and active negotiations. As discussed above, the Special
Committee sought to meet three general principles: (i) to place the Company on
a financially viable basis, (ii) to establish a demonstrably effective long-
term business strategy for the Company, and (iii) to provide liquidity for the
Public stockholders in a fair, active and reliable trading market. In its
view, it achieved these principles in an arm's-length independent manner with
the advice of its independent financial and legal advisors by approving a
program that would successfully deleverage the Company's balance sheet, create
a structure to implement an effective business strategy, minimize the dilutive
effects to the Public stockholders of a necessary recapitalization and
maximize the Public stockholders' ability to participate in the Company's
progress free of the threat of an unfair short-form merger during the next
three years, among other elements of the Recapitalization Agreement.
 
  In this regard, the Special Committee believes that the following factors
are reasons in support of the Recapitalization:
 
    (i) Through the elimination of $185 million in debt and the Series A
  Preferred Stock, the Recapitalization Agreement substantially reduces the
  Company's interest and dividend requirements and enhances the Company's
  ability to fund its working capital requirements, capital expenditures and
  other corporate needs.
 
    (ii) The Recapitalization Agreement calls for CGE to support the
  Company's surety bond relationship with USF&G through consummation of the
  Recapitalization. This step permits the Company to continue to do business
  in the ordinary course.
 
    (iii) The execution of the Recapitalization Agreement and its closing
  should permit the Company to resume normal commercial banking
  relationships.
 
    (iv) The Recapitalization Agreement offers less dilution to the Public
  stockholders in its worst case (10.7% Public stockholder ownership) than
  the worst case arising under the July 10 Proposal (3.4% Public stockholder
  ownership with the reset mechanism) and is not materially different than
  the July 10 Proposal without the reset mechanism in a worst case (11.4%
  Public stockholder ownership).
 
    (v) Taking into account the Warrants issuable to Public stockholders in
  the Rights Offering, and assuming full Public stockholder participation in
  the Rights Offering, the Recapitalization offers more Public stockholder
  ownership potential--31.4% (assuming a Subscription Price of $1.75) or
  37.3% (assuming a Subscription Price of $2.50)--than the Public
  stockholders would have had under the July 10 Proposal (27.8%).
 
                                      41
<PAGE>
 
    (vi) The Rights Offering provides the Public stockholders value in the
  form of transferable Rights that may be resold in lieu of exercise by the
  receiving Public stockholder. This factor assumes that the Rights will have
  value.
 
    (vii) The commitment by the Company and CGE to a timely and coordinated
  roadshow enhances the ability of Public stockholders and other potential
  investors to make informed judgments on whether and how to participate in
  the Rights Offering. No such commitment was made in the July 10 Proposal.
 
    (viii) Through the Warrants (which are received by a subscribing Public
  stockholder in the Rights Offering), the stockholder is able to defer a
  further investment in the Company until the stockholder has seen
  substantial evidence of the Company's progress of recovery. The Warrants
  are available to subscribing Public stockholders and not to CGE. Because
  the warrants are transferable, the warrants should have value even if not
  exercised by the holder thereof.
 
    (ix) The Recapitalization does not contemplate the triggering of the
  Change of Control Provision set forth in the Indenture.
 
    (x) The stated commitment of CGE to work with the Company in developing
  further sources of capital for the Company is an important statement of
  assurance to the Company's Public stockholders, customers, creditors, and
  employees.
 
    (xi) CGE's agreement not to effect a short-form merger under applicable
  Delaware law for three years without the approval of a majority of the
  Independent Directors of the Company (as defined in the Investment
  Agreement) protects the Public stockholders' ability to benefit from the
  Company's recovery in such time period.
 
    (xii) The newly created Business Planning Committee is an appropriate
  means to refine and implement a demonstrably effective business strategy
  and to identify areas where CGE's water management expertise and resources
  and the Company's business could be effectively integrated with those of
  the Company.
 
    (xiii) The Recapitalization Agreement requires the Company to take steps
  designed to obtain better financial market coverage of its affairs and to
  take other steps aimed at improving the investment community's
  understanding of the Company and thus to improve the quality of the trading
  market in the Common Stock.
 
    (xiv) If the Public stockholders invest in the Rights Offering, up to $25
  million of such investments will be used by the Company in its business and
  will not be used to repay the Company's debt obligations to CGE and its
  affiliates. Under the July 10 Proposal if all Rights were exercised, the
  maximum amount of proceeds which would remain in the Company would have
  been $10 million.
 
    (xv) Upon consummation of the Recapitalization, the Class A Common Stock
  is expected to have intrinsic value which is higher generally, the Special
  Committee believes, than the range of intrinsic values implied in the July
  10 Proposal.
 
    (xvi) The Recapitalization permits Public stockholders to realize value
  for their shares which, the Special Committee believes, would have been
  unavailable or lower in a Chapter 11 reorganization, liquidation or certain
  other transactions involving the Company and third parties.
 
 Company Board
 
  On September 24, 1997, the Board of Directors of the Company unanimously (i)
determined that the Recapitalization is fair to, and in the best interests of,
the Company and its stockholders, and (ii) resolved to approve and adopt the
Recapitalization Agreement and the transactions contemplated thereby subject
to the terms and conditions thereof. In reaching such determinations, the
Board of Directors of the Company considered the following factors, each of
which, in the view of the Board, supported such determinations: (i) the
conclusions and recommendations of the Special Committee; (ii) the factors
referred to above as having been taken into account by the Special Committee,
including the receipt by the Special Committee of the opinion of WP&Co.,
 
                                      42
<PAGE>
 
that subject to the assumptions and limitations described in its opinion
(including the limitation that WP&Co. is not opining as to any individual term
of the Recapitalization Agreement), that the financial terms of the
Recapitalization Transactions (as defined in the opinion) taken as a whole are
fair from a financial point of view to the Public stockholders, (iii) the fact
that the terms and conditions of the Recapitalization Agreement were the
result of arm's-length negotiations between the Special Committee and CGE and
(iv) the financial position of the Company as disclosed in the 10-Q.
 
  The members of the Board of Directors of the Company, including the members
of the Special Committee, evaluated the Recapitalization in light of their
knowledge of the business, financial condition and prospects of the Company,
and based upon the advice of financial and legal advisors. In light of the
number and variety of factors that the Board of Directors of the Company and
the Special Committee considered in connection with their evaluation of the
Recapitalization, the Board of Directors of the Company did not find it
practicable to assign relative weights to the foregoing factors, and
accordingly, the Board of Directors of the Company did not do so.
 
  The Board of Directors of the Company, including the members of the Special
Committee, believes that the Recapitalization is procedurally fair because,
among other things: (i) the Special Committee consisted of Independent
Directors appointed to represent the interests of the stockholders other than
CGE; (ii) the Special Committee retained and was advised by independent legal
counsel; (iii) the Special Committee retained WP&Co. as its independent
financial advisor to assist it in evaluating a proposed recapitalization and
received advice from WP&Co.; (iv) the deliberations pursuant to which the
Special Committee evaluated the proposed recapitalization and alternatives
thereto were procedurally fair; and (v) the terms and conditions of the
Recapitalization Agreement resulted from active arm's-length bargaining
between representatives of the Special Committee, on the one hand, and
representatives of CGE on the other.
 
ROLE OF FINANCIAL ADVISOR
 
  In connection with the review of the Recapitalization, the Special Committee
retained an independent financial advisor to assist it in its consideration of
valuation, financial and other matters relating to the transactions
contemplated by the Recapitalization Agreement. In this regard, the Special
Committee retained WP&Co. as its financial advisor, and WP&Co. has acted
exclusively in such capacity and is not, among other things, acting as
underwriter for or otherwise participating in the distribution of the
securities being offered hereby.
 
  Prior to the establishment of the Special Committee to review CGE's
recapitalization proposal, the Company had engaged Lazard Freres in January
1997 to develop a preliminary recapitalization plan and to assess the
possibility of de-emphasizing the Research-Cottrell business segment and
redeploying capital to the PSG and Metcalf & Eddy segments. The Special
Committee retained WP&Co. in July 1997 to assist the Special Committee in its
review of the recapitalization proposal presented by CGE to the Company.
During the course of the assignment, WP&Co. conducted business and financial
due diligence with respect to the Company and CGE's initial recapitalization
proposal of July 10, 1997. During that time, WP&Co. interviewed corporate
executives of the Company, management of the Company's operating subsidiaries,
and met with the Company's financial advisor, Lazard Freres. WP&Co. also held
meetings with CGE's financial advisor, Houlihan Lokey, in an effort to
understand the purposes, operation and implications of CGE's recapitalization
proposals. WP&Co.'s analysis has taken into consideration, among other things,
financial information provided by the Company and others; several alternative
business plans with accompanying financial projections provided by management;
independent financial and business information compiled by WP&Co.; and
responses to WP&Co.'s questions with respect to the Company and the objectives
the Special Committee sought to achieve in a recapitalization.
 
  In approving the Recapitalization Agreement for consideration by the Board
of Directors of the Company after determining that the Recapitalization
Agreement was desirable and in the best interests of the Company and its
Public stockholders, the Special Committee considered the views and the
written opinion of WP&Co., dated September 24, 1997 (the "WP&Co. Opinion"),
described below.
 
                                      43
<PAGE>
 
 Opinion of Wasserstein Perella & Co., Inc.
 
  The Special Committee retained WP&Co. to assist in evaluating the terms of
and responding to a recapitalization proposal from CGE. WP&Co. was not
authorized to and did not (i) solicit bids or conduct an auction for the sale
of the Company or (ii) solicit alternative proposals to the Recapitalization
from any person other than CGE. The WP&Co. Opinion does not address the
Company's or the Special Committee's underlying business decision to effect
the Recapitalization nor does it address the fairness of any individual term
of the Recapitalization Agreement. In addition, WP&Co. expresses no opinion as
to the price at which the shares of Class A Common Stock, the Rights or the
Warrants will actually trade at any time or as to the fairness to any
stockholder or the Company of the Subscription Price or the Warrant Exercise
Price. The WP&Co. Opinion does not constitute a recommendation that any
stockholder should exercise its Rights or Warrants and should not be relied
upon by any holder as such or as to the manner in which any stockholder should
vote with respect to the Recapitalization. The terms of the Recapitalization
Agreement were determined in arm's length negotiations between CGE and the
Special Committee in which negotiations the Special Committee was advised by
WP&Co. No restrictions or limitations were imposed upon WP&Co. with respect to
the investigations made or procedures followed by WP&Co. in rendering its
opinion.
 
  A copy of the WP&Co. Opinion is attached as Annex A to this Prospectus.
Stockholders are urged to read the WP&Co. Opinion in its entirety for
information with respect to the procedures followed, assumptions made, matters
considered and limits of the review by WP&Co. in rendering its opinion.
References to the WP&Co. Opinion herein and the summary of the WP&Co. Opinion
set forth below are qualified by reference to the full text of the WP&Co.
Opinion, which is incorporated herein by reference.
 
  As discussed above, on July 10, 1997, the Special Committee, its legal
advisors and WP&Co. met with, among other persons, CGE and its financial and
legal advisors to receive CGE's July 10 Proposal. Thereafter, both upon
concluding its initial due diligence of the financial and business condition
of the Company and during the course of its representation of the Special
Committee, WP&Co. held meetings (in person or by telephone) with the Special
Committee and its legal counsel, and with CGE's various advisors on numerous
occasions.
 
  On August 8, 1997, after concluding initial due diligence, WP&Co. provided
to the Special Committee an initial summary overview of the financial and
business condition of the Company and of the initial CGE recapitalization
proposal of July 10, 1997, in comparison to various other alternatives
available to the Company. WP&Co. continued to perform due diligence after this
date. On August 20, 1997, WP&Co. and the Special Committee's legal counsel met
with CGE's financial and legal advisors to discuss preliminary reactions to
CGE's July 10 proposal. Subsequently, the Special Committee and its advisors,
including WP&Co., met with CGE and its advisors regarding recapitalization
discussions on five occasions and held numerous other telephonic discussions
in various working group combinations to continue recapitalization
discussions.
   
  On September 24, 1997, WP&Co. made its final presentation to the Special
Committee with respect to the Recapitalization Agreement that had been
negotiated between CGE and the Special Committee, which presentation was
accompanied by delivery of its written opinion dated the same date, to the
effect that, as of such date, and based upon and subject to the assumptions
and limitations set forth in such opinion, the financial terms of the
"Recapitalization Transactions," taken as a whole, are fair from a financial
point of view to the holders of the Class A Common Stock (other than CGE and
its affiliates). The Recapitalization Transactions are defined in the WP&Co.
Opinion to include (i) the Exchange, (ii) the declaration of a dividend by the
Company on the Record Date to all holders of Common Stock of transferable
Rights entitling the holders to purchase at the Subscription Price in the
aggregate such number of shares of Common Stock which, when multiplied by the
Subscription Price will equal $210,000,000 in gross proceeds, with each Right
being exercisable at the Subscription Price for one share of Common Stock and,
in the case of each stockholder other than CGE and its Subsidiaries, a number
of Warrants referred to in clause (iii), (iii) the issuance to each person
other than CGE and its subsidiaries that exercises a Right of a number of
Warrants equal to such person's pro rata portion of the Warrant Pool, (iv) the
Conditional CGE Subscription, and (v) the use of proceeds from the Rights
Offering to     
 
                                      44
<PAGE>
 
   
repay $185,000,000 aggregate principal amount of indebtedness owed to CGE and
its affiliates, other than the first $25,000,000 of gross proceeds received
from holders of Rights in the Rights Offering (other than CGE and its
subsidiaries) which are to be retained by the Company for general corporate
purposes. Following WP&Co.'s September 24, 1997 presentation, the Special
Committee and the Company's Board of Directors separately authorized the
Recapitalization Agreement on that same date.     
 
  WP&Co.'s September 24 presentation to the Special Committee included a
summary and analysis of the Recapitalization Agreement, a comparison of the
Recapitalization Agreement to the July 10 Proposal, various financial analyses
of the Company, an analysis of the business of the Company and a discussion of
general developments in the industries in which the Company is involved. A
summary of certain of the analyses performed by WP&Co. is set forth below
under "Summary and Analysis of the Recapitalization Proposal."
 
  In arriving at its opinion, WP&Co. reviewed, among other things, (i) drafts
of the Recapitalization Agreement, (ii) certain publicly available business
and financial information with respect to the Company, including publicly
available consolidated financial statements of the Company for recent years
and interim periods that were available as of the date of the WP&Co. Opinion,
(iii) certain internal financial and operating information, including
financial forecasts, analyses and projections prepared by or on behalf of the
Company and provided by or on behalf of the management of the Company to
WP&Co. for purposes of its analysis and (iv) certain financial and stock
market data relating to the Company. WP&Co. then compared such data with
similar data for certain other companies, the securities of which are publicly
traded, that WP&Co. believed to be relevant or comparable in certain respects
to the Company or one or more of its businesses or assets. In evaluating the
Company's financial condition and prospects, WP&Co. considered, among other
things, limitations placed by the Company's banks on its ability to borrow
amounts otherwise available under its banking facilities and the necessity of
seeking waivers in order to avoid an event of default under such facilities,
the expected suspension of certain USF&G bonding arrangements as of September
30, 1997, the pending DOJ Investigation with regard to certain activities of
PSG, the involuntary cessation of quotation of the Company's Convertible
Debentures on the Nasdaq SmallCap Market and the notification by AMEX that the
Company no longer meets certain requirements for its Class A Common Stock to
be listed on AMEX. WP&Co. also considered the implications of the Company's
capital structure to bidding for contracts being awarded by municipalities and
other entities.
 
  WP&Co. met with management of the Company to review and discuss, among other
matters, the Company's business, operations, assets, financial condition and
future prospects as well as its financial difficulties, liquidity constraints,
difficulty in funding operations in the ordinary course and certain contingent
liabilities identified in the Company's public filings. In addition, WP&Co.
performed such studies, analyses and investigations and reviewed such other
information as it considered appropriate for purposes of arriving at and
preparing the WP&Co. Opinion.
 
  In rendering its opinion, WP&Co. relied upon and assumed the accuracy and
completeness of, without independent verification, all of the financial and
other information that was available to it from public sources or that was
provided to it by the Company or its representatives. WP&Co. relied upon the
reasonableness and accuracy of the financial projections, forecasts and
analyses provided to it and WP&Co. assumes that such projections, forecasts
and analyses (as such were modified by management of the Company in the course
of WP&Co.'s assignment) were reasonably prepared in good faith and on bases
reflecting the best currently available judgments and estimates of the
Company's management. WP&Co. expresses no opinion with respect to such
projections, forecasts and analyses or the assumptions upon which they are
based. In addition, WP&Co. did not, and was not requested to, review any of
the books and records of the Company, or conduct a physical inspection of the
properties or facilities of the Company, or make or obtain an independent
valuation or appraisal of the assets or liabilities of the Company, and WP&Co.
was not provided with any such independent valuation or appraisal.
 
  In arriving at its opinion, WP&Co. assumed that the final form of the
Recapitalization Agreement document would not differ in any material respect
from the drafts provided to it and that the Recapitalization Transactions
 
                                      45
<PAGE>
 
would be consummated on the terms set forth or provided for in the
Recapitalization Agreement, without material waiver or modification. In
addition, WP&Co. assumed that the terms of the definitive agreement evidencing
the Warrants will reflect the terms of the Warrants as set forth on Exhibit A
to the Recapitalization Agreement, but noted that WP&Co. had not been provided
with any drafts of such definitive agreement. Furthermore, WP&Co. assumed
that, prior to completing the Rights Offering, the Company would adopt an
amendment to its Restated Certificate of Incorporation in the form of Exhibit
B to the Recapitalization Agreement.
 
  The WP&Co. Opinion is based on economic and market conditions and other
circumstances as they existed and were evaluated by WP&Co. as of the date of
the WP&Co. Opinion. WP&Co. has no duty or obligation to advise the Company or
any other person of any change in any fact or matter affecting its opinion of
which it becomes aware after the date of its opinion. WP&Co.'s valuation
analyses of the Company necessarily required it to make a broad range of
subjective judgments as to appropriate comparable companies and
recapitalizations and appropriate multiples of various selected financial data
and appropriate discount rates. WP&Co. relied upon its experience in valuing
companies to select data that enabled WP&Co. to perform the valuation analyses
necessary to permit it to arrive at its opinion.
 
 Summary and Analysis of the Recapitalization
 
  At the September 24, 1997 meeting of the Special Committee, WP&Co. presented
its analysis of the material terms of the Recapitalization. In addition,
WP&Co. reviewed with the Special Committee certain financial, business and
historical stock market information with respect to the Company, and the
procedures used in arriving at, and the analyses underlying, the WP&Co.
Opinion. The summary set forth below does not purport to be a complete
description of the analyses relating to the WP&Co. Opinion. The preparation of
a fairness opinion is a complex process that is not purely mathematical and is
not necessarily susceptible to partial analyses or summary description.
Stockholders are urged to review WP&Co.'s written opinion in its entirety.
 
 Summary Implied Valuation of the Company
   
  WP&Co. performed the following valuation analyses of the Company, as more
fully described below, in order to determine a range of values for the Company
before giving effect to the Recapitalization. WP&Co.'s valuation analyses
included a value for Research-Cottrell which was provided to WP&Co. by Lazard
Freres, which has been engaged by the Company to assist in exploring various
strategic alternatives for Research-Cottrell including a possible disposition
of the Research-Cottrell business, based upon preliminary expressions of
interest proposed by potential acquirors of Research-Cottrell. These valuation
analyses demonstrated a range of values for the Company, before giving effect
to the Recapitalization, of between $207 million and $325 million and
indicated that before giving effect to the Recapitalization the Company's
Common Stock had no intrinsic value per share.     
 
  Discounted Cash Flow Analysis. WP&Co. performed a discounted cash flow
analysis of the business of the Company on a subsidiary-by-subsidiary basis
excluding Research-Cottrell. A discounted cash flow analysis is a traditional
valuation methodology used to derive a valuation of a corporate entity by
capitalizing estimated future earnings and calculating the estimated future
unlevered free cash flows of such corporate entity (unlevered net income plus
deprecation and amortization, less capital expenditures and changes in working
capital) and discounting such aggregated results back to a present value using
a range of risk-adjusted discount rates (representing a range of risk-adjusted
costs of capital for companies with similar and/or appropriate business
portfolios than the applicable division). The WP&Co. discounted cash flow
analysis considered the projected operating performance of the Company for the
years ended October 31, 1998, through 2000 based on a management case
utilizing projections prepared by the Company's management for PSG as of May
1997 (the "May 1997 PSG Projections") and for Metcalf & Eddy as of May 1997
(the "May 1997 M&E Projections") and as of July 1997 (the "July 1997 M&E
Projections"). WP&Co. conducted various analyses in the course of its due
diligence to evaluate the reasonableness of the projections, including a
review of historical financial data of PSG and Metcalf & Eddy to analyze the
relationship between projected and actual results, review of unusual expense
items for the latest twelve months, and interviews with senior management of
the Company and its subsidiaries. The July 1997 M&E Projections reflect the
Company's senior management's expectations for the financial performance of
Metcalf & Eddy at that time and reflect a downward revision of the May 1997
M&E
 
                                      46
<PAGE>
 
Projections in light of earlier downward revisions to the 1997 Metcalf & Eddy
forecast to reflect actual operating results and expectations for future
periods and also exclude the results of two projected acquisitions that were
included in the May 1997 M&E Projections.
 
  Discount rate ranges utilized ranged from 13.0% to 15.0% in the case of PSG
and Metcalf & Eddy. The sum of the present values of such cash flows was then
added to the present value of the applicable subsidiary's terminal value in
2000. The terminal value was calculated by multiplying the earnings before
interest, taxes, depreciation and amortization ("EBITDA") for fiscal year 2000
by multiples ranging from 6.0x to 7.0x (in the case of PSG) to 5.0x to 6.0x
(in the case of Metcalf & Eddy). Based on this analysis, WP&Co. calculated a
pre-tax valuation reference range of $116 million to $150 million for PSG
(utilizing the May 1997 PSG Projections). In addition WP&Co. calculated a pre-
tax valuation reference range of $138 million to $170 million for Metcalf &
Eddy (utilizing the May 1997 M&E Projections) and of $61 million to $74
million for Metcalf & Eddy (utilizing the July 1997 M&E Projections).
 
  With respect to the discounted cash flow analysis, WP&Co. noted that the
selection of an appropriate discount rate is an inherently subjective process
and is affected by such factors as the Company's cost of capital, the
uncertainty associated with achieving the projections provided by the
management of the Company and transaction risk generally. WP&Co. also noted
that discounted cash flow analysis is a widely used valuation methodology, but
that it relies on numerous assumptions regarding the future performance of a
company and the future economic environment, including earnings growth rates,
unlevered free cash flows, terminal values and discount rates, all of which
are inherently uncertain because they are predicated upon future events and
circumstances not under the Company's control.
 
  Comparable Companies. WP&Co. analyzed stock price performance and operating
performance of the Company and certain selected comparable companies to
conduct a comparable companies analysis. WP&Co. considered a variety of
multiples and other financial information for the companies, including
multiples of Enterprise Value to Sales, Enterprise Value to EBITDA, and
Enterprise Value to earnings before interest and taxes ("EBIT"), and Market
Value as a multiple of Net Income and Book Value. Comparable companies
utilized in the analysis for the Company included ATC Group Services, Dames &
Moore, Harding Lawson, ICF Kaiser International, International Technology, Ohm
Corp, Roy F. Weston, Terra Tech, and U.S. Filter.
 
  The comparable corporations were chosen because they are publicly traded
companies with operations that, for purposes of this analysis, may be
considered to be similar to the operations of the Company. WP&Co. observed
that comparable company analysis is subject to certain limitations, including
the fact that no individual company has a business mix that precisely mirrors
that of any division of the Company and the analysis has limited applicability
to a loss-making business. Accordingly, an assessment of the results of
WP&Co.'s analysis necessarily involves certain considerations and judgments
concerning differences in the financial and operating characteristics of each
subsidiary which could affect the implied trading values of the companies to
which it is being compared.
 
  Based on such calculations, WP&Co. determined that the appropriate range of
valuation multiples for PSG was .4x to .6x for revenue, 7.5x to 8.5x for
EBITDA, and 10.5x to 11.5x for EBIT. Likewise, WP&Co. determined that the
appropriate range of multiples for Metcalf & Eddy was 0.4x to 0.5x for
revenue, 6.0x to 8.0x for EBITDA, and 9.0x to 10.0x for EBIT. WP&Co. applied
such multiples of PSG to the subsidiary's 1998 operating projections to arrive
at the following revenue, EBITDA and EBIT valuation ranges for PSG: $125
million to $187 million for revenue, $157 million to $178 million for EBITDA
and $121 million to $132 million for EBIT. Likewise, WP&Co. applied such
multiples of Metcalf & Eddy to the subsidiary's 1998 operating projections
(utilizing management projections for Metcalf & Eddy as of July 1997) to
arrive at revenue, EBITDA and EBIT valuation ranges for Metcalf & Eddy as
follows: $78 million to $98 million for revenue, $76 million to $102 million
for EBITDA and $55 million to $61 million for EBIT. Utilizing management
projections for Metcalf & Eddy as of May 1997, WP&Co. arrived at the following
revenue, EBITDA and EBIT valuation ranges for Metcalf & Eddy: $90 million to
$113 million for revenues, $119 million to $158 million for EBITDA, and $119
million to $132 million for EBIT.
 
                                      47
<PAGE>
 
  Comparable Acquisitions Analysis. WP&Co. reviewed and analyzed certain
financial information based on eleven selected mergers and acquisitions in
industries considered comparable to the Company between 1993 and 1996.
Comparable acquisitions (listed by acquiror/acquiree) for the Company included
Heidemij N.V./Geraghty & Miller, Inc.; OHM Corp./Environmental Remediation
Services of Rust International; Insituform Technologies/Insituform Mid-
America; Fluor Daniel/Groundwater Technology Inc.; U.S. Filter Corp./Zimpro
Environmental Inc.; U.S. Filter Corp./Davis Water & Waste Industries; U.S.
Filter Corp./Utility Supply Group; U.S. Filter Corp./WaterPro; U.S. Filter
Corp./Water Systems and Manufacturing Group of Wheelabrator Technologies;
Rollins Environmental Services/Laidlaw Environmental Services; and USA Waste
Services/Mid-American Waste. WP&Co. considered certain financial information
related to those transactions, including multiples of Enterprise Value to
Sales, Enterprise Value to EBITDA, and Enterprise Value to EBIT.
 
  The comparable transactions were chosen because, for the purpose of this
analysis, the acquired companies may be considered to be similar to the
operations of the Company. WP&Co. observed that comparable acquisitions
analysis is subject to certain limitations, including that the analysis does
not take into account the timing of the transactions, no single transaction is
precisely comparable in business characteristics and market conditions, there
is a scarcity of public disclosure on terms of comparable transactions and the
financial performance of acquirees and the analysis has limited applicability
to financially distressed businesses. Accordingly, an analysis of the results
of the foregoing necessarily involves certain considerations and judgments
concerning differences in the financial and operating characteristics of the
Company and certain other characteristics that could affect the derived value
of the transactions to which the Company is being compared. WP&Co. also noted
that the particular circumstances surrounding the business and financial
condition of the Company, including its financial distress, the changes in its
market base, its substantial ownership and control by CGE, and legal
uncertainties surrounding PSG make a control premium implied in a comparable
transactions analysis not as meaningful. In arriving at its range of
enterprise valuations for the Company, WP&Co. noted that it did not give
significant weight to the multiples and values implied in the comparable
acquisitions analysis.
   
  Enterprise Valuation. WP&Co. determined the enterprise value of the Company
to be the sum of valuations for each of its PSG and Metcalf & Eddy businesses
using discounted cash flow and comparable companies analysis and the value for
Reseach-Cottrell provided to WP&Co. by Lazard Freres. WP&Co.'s valuation
analysis also included the discounted cash flow analysis of the corporate
overhead costs of the Company at $30 million to $33 million utilizing rates of
10.0% to 11.0% and a terminal multiple of 5.5x to 6.0x. Based on the Company's
May 1997 projections for PSG and Metcalf & Eddy, and corporate overhead and
values for Research-Cottrell (as provided to WP&Co.), WP&Co. determined that
the enterprise value of the Company was between $272 million to $325 million.
Based on the revised July 1997 forecast for Metcalf & Eddy, the enterprise
value of the Company would be between $207 million and $260 million. The
management projections from May, 1997 were favored as a basis of valuation
because these represented the only comprehensive set of projections that were
prepared and reviewed by senior management and business division heads
available from management. WP&Co. also conducted a sensitivity analysis on the
discount rates and terminal EBITDA multiples used to determine Enterprise
Value. At one end of the range, using a 16.0% discount rate and 5.0x EBITDA
multiple applied to PSG and Metcalf & Eddy, the Enterprise Value of the
Company was determined to be $231 million and at the other end, using a 12.0%
discount rate and a 7.5x EBITDA multiple, the Enterprise Value of the Company
was determined to be $377 million (based on May 1997 projections). WP&Co.'s
range of enterprise valuation excludes the value, if any, arising from the
Company's net operating loss carryforwards because of its potentially limited
utilization based on the Company's projections.     
   
 Other Analyses of the Company     
 
  Cash Flow and Liquidity Analysis. WP&Co. conducted a cash flow and liquidity
analysis to evaluate the Company's financial condition. The analysis shows
that assuming a sale of Research-Cottrell in fiscal 1998 and without a
recapitalization, the Company will not be able to meet interest payments for
fiscal year 1999 based on management's July 1997 business projections.
Furthermore, if the Company is unable to use proceeds from such
 
                                      48
<PAGE>
 
a sale of Research-Cottrell for general corporate purposes, the Company will
run out of cash during fiscal 1998 (which commences November 1, 1997).
 
  Pro Forma Ownership Effects of the Recapitalization. WP&Co. also analyzed
the pro forma effects of a recapitalization involving CGE under the
Recapitalization Agreement and under other recapitalization alternatives
considered by CGE and the Company. In performing its pro forma analysis WP&Co.
took into account a number of assumptions. For example, in a comparison of the
pro forma effects of the July 10 Proposal with the Recapitalization Agreement,
WP&Co. used an assumed enterprise value of the Company of $300 million, and
calculated EBITDA figures using the July 1997 M&E Projections under various
cases where all stockholders exercised their rights and no Public stockholders
exercised their rights (other than CGE and its affiliates) under specified
subscription and stock prices.
 
  WP&Co. described the pro forma ownership effects on the Company's
stockholders under the Recapitalization Agreement and in comparison to
alternative proposals such as the July 10 Proposal. Assuming full
participation in the Rights Offering under the Recapitalization Agreement at a
Subscription Price of $1.75 per share, the Public stockholders' equity
position would be reduced to approximately 27.8%. At a Subscription Price of
$2.50 per share, that percentage would be 32.9%. Under the case in which only
CGE and its affiliates participated in the Rights Offering at a Subscription
Price of $1.75 per share, the Public stockholders would be diluted down to
10.7%. At a Subscription Price of $2.50 per share, that percentage would be
14.2%. These percentages do not reflect the Warrants to be issued to Public
stockholders who exercise their Rights. Public stockholders exercising Rights
also would receive their respective pro rata share of the Warrants issued from
the Warrant Pool under the Recapitalization Agreement that would be
exercisable at any time up to three years from the date of issuance into
shares of Class A Common Stock at a Warrant Exercise Price of $2.50 per share.
If all of the 10,000,000 Warrants available for issuance were issued and
exercised, the Public stockholder's equity position would increase by
approximately 3.6% from 27.8% to 31.4% at a Subscription Price of $1.75 per
share. At a Subscription Price of $2.50 per share, that figure would increase
from 32.9% to 37.3%.
 
  In contrast WP&Co.'s analysis indicated that, under the July 10 Proposal,
Public stockholders would be diluted down to 3.4% under one outcome, taking
into account the proposed dividend and reset mechanism and assuming the
minimum conversion price of $0.50, or 11.4% in the event the reset mechanism
were eliminated.
 
  Pro Forma Implied Value Per Share Estimates. WP&Co. analyzed the pro forma
implied value per Class A Common Stock share under different subscription
prices on holders of the Company's shares of Class A Common Stock. The pro
forma analysis was based on certain assumptions set forth in the WP&Co.
presentation, including the assumption that the Company had a $300 million
enterprise value. The implied value per share to holders immediately after the
Recapitalization (excluding the value of the Warrants) based on WP&Co.'s
estimates ranged from $1.024 to $0.963 depending, respectively, on whether all
or no Public stockholders exercised their rights at an assumed Subscription
Price of $1.75 per share. If the Subscription Price rose to $2.50 per share,
the estimated pro forma implied value per share to holders (excluding the
value of the Warrant) increased to a range of $1.362 to $1.274 depending,
respectively, on whether all or no Public stockholders exercised their rights.
WP&Co. determined that absent the Recapitalization or a comparable
transaction, the intrinsic value per share to the Public stockholders of the
Company presently is zero.
 
  Value per Warrant. WP&Co., using the Black-Scholes options valuation
methodology and assuming 35% volatility, calculated the theoretical value per
Warrant to be $0.193 given the closing price of the Class A Common Stock on
September 23, 1997 of $1.50 per share; at a market price of $2.50 per share,
the theoretical value per Warrant would be $0.776. WP&Co.observed that while
the Black-Scholes options valuation methodology is the generally accepted
theoretical valuation methodology for warrants, there is significant amount of
judgment involved in determining various variables, such as volatility rates,
for the valuations. WP&Co. noted that the actual market value of each Warrant
may be different from the theoretical value implied by the Black-Scholes
model.
 
 
                                      49
<PAGE>
 
  Pro Forma Interest Coverage and Debt Ratios. WP&Co. analyzed the pro forma
impact of the Recapitalization on certain interest coverage ratios and debt
ratios of the Company under different cases where none of the Public
stockholders exercised their Rights and where all of the Public stockholders
exercised their Rights. These analyses showed that the Company's debt to
projected 1998 EBITDA ratio improved from 12.3x prior to Recapitalization to
4.2x to 5.2x after the Recapitalization (depending on whether all or none of
the Public stockholders exercised their Rights), regardless of the
Subscription Price range provided in the Recapitalization. Moreover, the
Company's projected 1998 EBITDA to interest coverage ratio improved from 1.1x
prior to the Recapitalization to 2.6x to 2.2x after the Recapitalization
(depending on whether all or none of the Public stockholders exercised their
Rights), regardless of the Subscription Price range provided in the
Recapitalization.
 
  Analysis of the Company's Position in its Respective Industries. WP&Co.
analyzed and discussed with the Special Committee its views regarding the
current and future competitive position of the Company and each of PSG and
Metcalf & Eddy on a stand-alone basis, including industry-wide factors such as
the potential for market growth in the water and waste-water management
industry through privatization of public projects, and the shift to longer-
term contracts.
 
  Strategic Options. In addition to a stand-alone strategy, WP&Co. reviewed
with the Special Committee the advantages and disadvantages of considering
potential merger or acquisition partners in terms of business ramifications,
potential bidder interest and other factors.
 
  Common Stock Performance Analysis. WP&Co.'s analysis of the performance of
the Company's Class A Common Stock consisted of an historical analysis of
average closing prices and trading volumes each quarter from August 10, 1989,
through June 30, 1997. WP&Co. also reviewed average closing prices and trading
on a weekly basis from the week of August 9, 1996 through September 19, 1997.
The Company's Class A Common Stock traded down to $1.438 per share on
September 17, 1997, as a result of negative earnings results and prospects
reported in the Company's 10-Q for the fiscal quarter ended July 31, 1997; as
of September 24, 1997, the September 17 price represented the lowest price of
the Class A Common Stock since the Company went public at $17.00 in August
1989 and down from a peak of $30.00 in June 1990. For the ninety days ended
September 19, 1997 the average closing price per share of the Company's Class
A Common Stock was $3.12 and the average daily volume was 74,652 shares.
   
  Rights Pricing Analysis. WP&Co. compared subscription price discounts for
fifteen rights offerings since July 1996 based on market prices reflecting the
closing market price as of the offering date, the average closing price over a
30-day period after the offering date, and the average closing price over a
90-day period after the offering date in order to evaluate the Subscription
Price. WP&Co.'s analysis confirmed the appropriateness of a subscription price
based, in part, upon a discount to the then current market price of the Common
Stock.     
   
  While the foregoing summary describes all analyses and examinations that
WP&Co. deemed material to the preparation of its opinion, it does not purport
to be a comprehensive description of all analyses and examinations actually
conducted by WP&Co. WP&Co. believes that its analyses must be considered as a
whole and that selecting portions of its analyses and the factors considered
by it, without considering all factors and analyses, could create a misleading
view of the process underlying the WP&Co. Opinion. While the conclusions
reached in connection with each analysis were considered carefully by WP&Co.
in arriving at its opinion, WP&Co. made various subjective judgments in
arriving at its opinion and did not consider it practicable to, nor did it
attempt to, assign relative weights to the individual analyses and specific
factors considered in reaching its opinion. In performing its analyses, WP&Co.
made numerous macroeconomic, operating and financial assumptions with respect
to industry performance, general business, regulatory and economic conditions
and other matters, many of which are beyond the control of the Company. Any
estimates incorporated in the analyses performed by WP&Co. are not necessarily
indicative of actual past or future results or values, which may be
significantly more or less favorable than such estimates. Estimated values do
not purport to be appraisals and do not necessarily reflect the prices at
which businesses or companies may be sold. Since such estimates are inherently
subject to uncertainty, WP&Co. does not assume any responsibility for their
accuracy. No company analyzed for comparative purposes is identical to the
Company or the business segment for which a comparison is being made.     
 
                                      50
<PAGE>
 
Accordingly, an analysis of comparative companies and comparative business
combinations is not simply mathematical but rather involves complex
considerations and judgments concerning financial and operating
characteristics of the companies involved and other factors that affect value.
 
  WP&Co. is an investment banking firm engaged in, among other things, the
valuation of businesses and their securities in connection with mergers and
acquisitions, negotiated underwritings, competitive biddings, secondary
distributions of listed and unlisted securities, private placements and
valuations for corporate and other purposes. The Special Committee selected
WP&Co. as its financial advisor because WP&Co. is an internationally
recognized investment banking firm and members of WP&Co. have substantial
experience in transactions such as the Recapitalization and in valuing
companies.
 
  Pursuant to the terms of an engagement letter dated July 18, 1997, the
Company, based on the authorization of the Special Committee, agreed to pay
WP&Co. a fee consisting of (i) a monthly advisory fee of $90,000 due and
payable from the execution of the engagement letter through the later of the
consummation of the Recapitalization and December 31, 1997, (ii) an additional
fee of $300,000 in connection with rendering the WP&Co. Opinion (against which
25% of the monthly advisory fee, up to $150,000, may be credited) and (iii) an
additional contingent fee that is related to the preservation of the Public
stockholders' value in the Company and that is limited to a maximum of
$300,000 and contingent upon the consummation of the Recapitalization. The
Company has also agreed to reimburse WP&Co., whether or not the
Recapitalization is consummated, for its reasonable out-of-pocket expenses,
including all reasonable fees, disbursements and other charges of counsel, and
to indemnify WP&Co. and certain related persons against certain liabilities
relating to or arising out of its engagement, including certain liabilities
under the federal securities laws. The terms of the fee arrangement with
WP&Co., which WP&Co. believes are customary in transactions of this nature,
were negotiated at arm's length between the Company and WP&Co. and the
Company's Board of Directors was aware of such arrangement, including the fact
that a significant portion of the aggregate fee payable to WP&Co. is
contingent upon consummation of the Recapitalization.
 
  In the ordinary course of its business, WP&Co. may actively trade the
securities of the Company for the accounts of WP&Co. and for the accounts of
its customers and, accordingly, may at any time hold a long or short position
in such securities.
 
THE EXCHANGE
 
  In the Exchange, at the close of business on the trading day immediately
preceding the Record Date of the Rights Offering, CGE's 1,200,000 shares of
Series A Preferred Stock (representing all of the issued and outstanding
shares of Series A Preferred Stock of the Company) were automatically
exchanged for     shares of Class A Common Stock at an exchange price equal to
the Subscription Price. Immediately following the Exchange, CGE beneficially
owned approximately  % of the outstanding Class A Common Stock of the Company.
 
THE RIGHTS OFFERING
 
  The Recapitalization Agreement provides that the Company will conduct the
Rights Offering and sets forth certain terms thereof, including the number of
Rights to be distributed, the Subscription Price, the Basic Subscription
Privilege, the Oversubscription Privilege, the issuance of Warrants and the
Conditional CGE Subscription. For a description of the Rights Offering, see
"The Rights Offering."
 
CONSENT SOLICITATION; ISSUANCE OF CLASS B COMMON STOCK
 
  Concurrently with the Rights Offering, the Company is conducting the Consent
Solicitation to eliminate the Change of Control Provision in the Indenture. In
the event the Requisite Consents are not obtained prior to the Expiration Date
and the exercise of the Basic Subscription Privilege or Oversubscription
Privilege or the Conditional CGE Subscription would cause a person's
beneficial ownership of Class A Common Stock to exceed
 
                                      51
<PAGE>
 
74%, the Company shall issue to such person only such number of shares of
Class A Common Stock as would cause such person's beneficial ownership of the
Company's voting power to equal 74% of the outstanding voting power and any
additional shares to be issued thereunder shall be shares of Class B Common
Stock. The Class A Common Stock and the Class B Common Stock are identical in
all respects except that (i) the Class B Common Stock is not entitled to vote
and (ii) the Class B Common Stock converts into Class A Common Stock
immediately upon the earlier of August 1, 2000 or seventy-five days following
the termination of the Change of Control Provision. Based upon the current
ownership of Class A Common Stock, the Company does not believe that any
stockholder other than CGE would be issued Class B Common Stock in the event
the Company fails to obtain the Requisite Consents.
 
OTHER
 
 Business Planning Committee
 
  In connection with the Recapitalization, the Board of Directors of the
Company has agreed to establish the Business Planning Committee, a five-member
committee of the Board of Directors comprised of three CGE appointed directors
and two directors who are unaffiliated with and independent of CGE, to review
the business strategies prepared by the senior management of the Company and,
as appropriate, make recommendations on the formulation and implementation of
those strategies that have as their objective increasing stockholder value.
Among other things, the Business Planning Committee will identify areas where
CGE's management expertise and the Company's business may be effectively
integrated. The Business Planning Committee will remain in place through the
end of fiscal 1999.
 
 Analyst Conferences
   
  The Board of Directors of the Company also has agreed, for as long as shares
of Class A Common Stock of the Company are traded on the AMEX or any other
national securities exchange or national quotation system, to cause management
of the Company to hold semi-annual analyst conferences, conduct conference
calls concurrent with earnings releases, promote analyst coverage of its stock
and initiate a stockholder relations program.     
 
 USF&G Bonding Guarantees
   
  CGE and the Company also have agreed that from September 30, 1997 and
continuing until the consummation of the Recapitalization, CGE (or one of its
affiliates) will enter into guarantees of certain obligations of the Company
relating to the bonding of certain contracts under the Master Surety Agreement
dated as of October 31, 1995 between USF&G and the Company and its
subsidiaries. In consideration, CGE (or one of its affiliates) will receive
assurances from USF&G that, in the event of a default by the Company, USF&G
will assign and transfer to CGE (or one of its affiliates) any and all of
USF&G's resultant rights in the bonded commercial contract (whether arising
under the Master Surety Agreement, or by operation of law, or otherwise). Any
such arrangement will be negotiated between CGE and USF&G. See "Summary--
Recent Developments-- USF&G Guarantees by CGE." and "Risk Factors--USF&G
Guarantees by CGE."     
 
 No Short-Form Merger
 
  In addition, in connection with the Recapitalization, CGE has agreed for a
period of three years from the Closing Date of the Recapitalization not to
acquire the Company by way of a short-form merger without the approval of a
majority of the Independent Directors of the Company (as defined in the
Investment Agreement).
 
 Clarification of Investment Agreement
 
  The Recapitalization Agreement also amends and restates the exclusivity
provision of the Investment Agreement to clarify that the exclusivity
provision in the original Investment Agreement should apply to both water
management and wastewater management activities, but should not apply to those
businesses and
 
                                      52
<PAGE>
 
   
contractual arrangements in existence at the time the Investment Agreement was
entered into or to OTV-Kruger. See "Certain Relationships and Related
Transactions--Covenants of CGE."     
 
 Charter Amendment
   
  In order to consummate the Recapitalization, as soon as reasonably
practicable, the Company, acting through the Board, has agreed to duly approve
and adopt an amendment to the Company's Restated Certificate of Incorporation
(i) to increase the number of shares of Class A Common Stock that the Company
is authorized to issue from 100,000,000 shares to 260,000,000 shares, of which
230,000,000 shares would be Class A Common Stock and 30,000,000 shares would
be Class B Common Stock and (ii) to amend the conversion rights of the holders
of the Company's Class B Common Stock to provide for automatic conversion of
shares of Class B Common Stock into Class A Common Stock upon the earlier of
August 1, 2000 or seventy-five days following the termination of the effect of
the Change of Control Provision. In addition, the Company has obtained the
written consent of the Company's stockholders in respect of such amendments to
the Restated Certificate of Incorporation of the Company. CGE and Anjou have
given their written consent to the Company in respect of such amendments.     
 
  The Charter Amendment will be effective upon the filing of an appropriate
certificate of amendment with the Secretary of State of the State of Delaware,
which filing is expected to occur as soon as practicable following the
expiration of the twenty calendar day period following the mailing of the
Information Statement.
 
  The obligations of the Company and CGE to consummate the transactions
contemplated by the Recapitalization Agreement are conditioned upon a number
of factors, including, among other things, (i) there being an effective
registration statement under the Securities Act in connection with the Rights
Offering and with respect to the Rights, the Warrants and the Underlying
Shares; (ii) the Company's completion of the Exchange; and (iii) the filing of
any required amendment or amendments to the Restated Certificate of
Incorporation of the Company in connection with the authorization of
additional shares of the Company's common stock and the amendment of the
conversion rights of the holders of the Company's Class B Common Stock.
 
                                      53
<PAGE>
 
                                CAPITALIZATION
   
  The capitalization of the Company at October 31, 1997, as set forth below,
gives effect to the Rights Offering and Exchange as of such date assuming: (i)
the Exchange has been effected at an exchange price of $1.75 per share, (ii) a
Subscription Price of $1.75 per share, (iii) in the case of the "Minimum
Subscription," no Rights holder other than CGE and Anjou exercises Rights in
the Rights Offering such that the gross proceeds from the Rights Offering are
$185 million, (iv) the Requisite Consents are obtained, (v) in the case of the
"Maximum Subscription," full exercise of the Rights by the Public such that
gross proceeds in the Rights Offering are $210 million, (vi) the Charter
Amendment has been effected, (vii) the gross proceeds from the Rights Offering
are used to repay the CGE Note and the Anjou Note and (viii) all fees and
expenses incurred in connection with the Rights Offering are paid out of
available cash of the Company. See "Risk Factors--Indefinite Amount and Use of
Proceeds" and "Use of Proceeds." There can be no assurance that any Public
Rights holder will exercise Rights in the Rights Offering and, consequently,
that gross proceeds in the Rights Offering will exceed $185 million.     
   
  The following pro forma capitalization table is presented for informational
purposes only and is not necessarily indicative of the capitalization that
would have occurred if the Rights Offering had been consummated on October 31,
1997, nor is it necessarily indicative of the future capitalization of the
Company.     
 
<TABLE>   
<CAPTION>
                                                     OCTOBER 31, 1997
                                           -------------------------------------
                                                       AS ADJUSTED  AS ADJUSTED
                                                         MINIMUM      MAXIMUM
                                           HISTORICAL  SUBSCRIPTION SUBSCRIPTION
                                           ----------  ------------ ------------
                                            (IN THOUSANDS, EXCEPT SHARE DATA)
<S>                                        <C>         <C>          <C>
Short-term debt:
  Current portion of long-term debt....... $     398    $     398    $     398
                                           =========    =========    =========
Long-term debt:
  CGE Note................................ $ 125,000    $     --     $     --
  Convertible Debentures .................   115,000      115,000      115,000
  Anjou Note..............................    60,000          --           --
  Bank Credit Facility....................     3,000        3,000        3,000
  Other...................................     5,243        5,243        5,243
                                           ---------    ---------    ---------
                                             308,243      123,243      123,243
    Less current portion..................      (398)        (398)        (398)
                                           ---------    ---------    ---------
Total long-term debt......................   307,845      122,845      122,845
                                           ---------    ---------    ---------
Stockholders' equity (deficit):
  Preferred Stock, par value $.01,
   authorized 2,500,000 shares; issued
   1,200,000 shares; liquidation value
   $60,000................................        12          --           --
  Class A Common Stock, par value $.001,
   authorized 95,000,000 shares;
   authorized 230,000,000 shares following
   the Charter Amendment; issued
   32,109,156 shares (172,109,156 shares,
   as adjusted Minimum Subscription;
   186,394,870 shares, as adjusted Maximum
   Subscription)..........................        32          172          186
  Class B Common Stock, par value $.001,
   authorized 5,000,000 shares; authorized
   30,000,000 shares following the Charter
   Amendment; issued none.................       --           --           --
  Additional paid-in capital..............   427,036      606,908      631,894
  Accumulated deficit.....................  (535,214)    (536,314)    (536,314)
  Common stock in treasury, at cost.......      (108)        (108)        (108)
  Cumulative currency translation
   adjustment.............................    (1,020)      (1,020)      (1,020)
                                           ---------    ---------    ---------
Total stockholders' equity (deficit)......  (109,262)      69,638       94,638
                                           ---------    ---------    ---------
Total capitalization...................... $ 198,583    $ 192,483    $ 217,483
                                           =========    =========    =========
Book value per common share............... $   (5.29)   $    0.40    $    0.51
                                           =========    =========    =========
</TABLE>    
 
  See also the Notes to Unaudited Pro Forma Condensed Consolidated Financial
                                  Statements.
 
                                      54
<PAGE>
 
        UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
   
  The following unaudited pro forma condensed consolidated financial
statements have been prepared by the Company's management from its historical
consolidated financial statements which are contained elsewhere in this
Prospectus. The Unaudited Pro Forma Condensed Consolidated Statement of
Operations of the Company for the fiscal year ended October 31, 1997 and the
Unaudited Pro Forma Condensed Consolidated Balance Sheet as of October 31,
1997 have been prepared to illustrate the estimated effects of the
Recapitalization. The Unaudited Pro Forma Condensed Consolidated Statement of
Operations for the year ended October 31, 1997 was prepared as if the
Recapitalization was effective as of November 1, 1996. The Unaudited Pro Forma
Condensed Consolidated Balance Sheet was prepared as if the Recapitalization
was effective as of October 31, 1997, assuming, among other things, (i) that
the Exchange is effected at an exchange price of $1.75 per share, (ii) that
the Subscription Price is $1.75 per share, (iii) that gross proceeds from the
Rights Offering are $185 million for the "Minimum Subscription" and $210
million for the "Maximum Subscription," (iv) that the Requisite Consents are
obtained, (v) that the Charter Amendment is effected and (vi) all fees and
expenses incurred in connection with the Rights Offering are paid out of
available cash. The pro forma adjustments described in the accompanying notes
are based upon preliminary estimates and certain assumptions that management
of the Company believes are reasonable in such circumstances. The proceeds of
the Rights Offering have been assumed to be applied as set forth under "Use of
Proceeds." The Rights Offering, however, is not conditioned upon any minimum
level of exercise of Rights by the Public. Consequently, there can be no
assurance that the Rights Offering will raise more than $185 million or that
the Public will participate in the Rights Offering. See "Risk Factors--
Indefinite Amount and Use of Proceeds" and "Use of Proceeds."     
   
  The unaudited pro forma condensed consolidated financial statements are not
necessarily indicative of what the financial position or results of operations
actually would have been if the Recapitalization had occurred on the
applicable dates indicated. Moreover, they are not intended to be indicative
of future results of operations or financial position. The Unaudited Pro Forma
Condensed Consolidated Statement of Operations includes the historical sales
and costs of the Company, adjusted for costs and expenses which are
attributable to the Recapitalization, such as interest expense impacts
resulting from the new capital structure. The unaudited pro forma condensed
consolidated financial statements should be read in conjunction with the
historical consolidated financial statements of the Company and the related
notes thereto which are contained elsewhere in this Prospectus.     
 
                                      55
<PAGE>
 
                   
                UNAUDITED PRO FORMA CONDENSED CONSOLIDATED     
                      
                   BALANCE SHEET AS OF OCTOBER 31, 1997     
                                 
                              (IN THOUSANDS)     
 
<TABLE>   
<CAPTION>
                                      PRO FORMA                    PRO FORMA
                                     ADJUSTMENTS                  ADJUSTMENTS
                                         FOR          PRO FORMA       FOR        PRO FORMA
                          HISTORICAL   MINIMUM         MINIMUM      MAXIMUM       MAXIMUM
                           COMPANY   SUBSCRIPTION    SUBSCRIPTION SUBSCRIPTION  SUBSCRIPTION
                          ---------- ------------    ------------ ------------  ------------
<S>                       <C>        <C>             <C>          <C>           <C>
ASSETS
Current Assets:
  Cash and cash
   equivalents..........   $ 12,089   $  (4,600)(b)    $  7,489     $25,000(b)    $ 32,489
  Accounts receivable,
   net..................     76,681         --           76,681         --          76,681
  Costs and estimated
   earnings in excess of
   billings on
   uncompleted
   contracts............     33,557         --           33,557         --          33,557
  Inventories...........      1,893         --            1,893         --           1,893
  Prepaid expenses and
   other current
   assets...............      4,460                       4,460         --           4,460
                           --------   ---------        --------     -------       --------
    Total current
     assets.............    128,680      (4,600)        124,080      25,000        149,080
Property, plant and
 equipment, net.........     13,388         --           13,388         --          13,388
Investments in
 environmental treatment
 facilities.............     21,817         --           21,817         --          21,817
Goodwill, net...........    164,337         --          164,337         --         164,337
Other assets............     30,391      (1,500)(b)      28,891         --          28,891
Net non-current assets
 of discontinued
 operations.............     24,452         --           24,452         --          24,452
                           --------   ---------        --------     -------       --------
    Total assets........   $383,065   $  (6,100)       $376,965     $25,000       $401,965
                           ========   =========        ========     =======       ========
LIABILITIES AND
 STOCKHOLDERS' EQUITY
 (DEFICIT)
Current Liabilities:
  Current installments
   of long-term debt....   $    398   $     --         $    398     $   --        $    398
  Accounts payable......     80,007         --           80,007         --          80,007
  Accrued expenses......     86,681         --           86,681         --          86,681
  Billings in excess of
   costs and estimated
   earnings on
   uncompleted
   contracts............     15,320         --           15,320         --          15,320
  Income taxes payable..      1,485         --            1,485         --           1,485
  Net current
   liabilities of
   discontinued
   operations...........        591         --              591         --             591
                           --------   ---------        --------     -------       --------
    Total current
     liabilities........    184,482         --          184,482         --         184,482
Long-term debt..........    307,845    (185,000)(a)     122,845         --         122,845
Total stockholders'
 equity (deficit).......   (109,262)    178,900 (b)      69,638      25,000(b)      94,638
                           --------   ---------        --------     -------       --------
    Total liabilities
     and stockholders'
     equity.............   $383,065   $  (6,100)       $376,965     $25,000       $401,965
                           ========   =========        ========     =======       ========
</TABLE>    
      
   See also the Notes to Unaudited Pro Forma Condensed Consolidated Financial
                                Statements.     
 
                                       56
<PAGE>
 
              
           UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT     
            
         OF OPERATIONS FOR THE FISCAL YEAR ENDED OCTOBER 31, 1997     
                      
                   (IN THOUSANDS, EXCEPT PER SHARE DATA)     
 
<TABLE>   
<CAPTION>
                                                      PRO FORMA
                                     HISTORICAL    ADJUSTMENTS FOR
                                      COMPANY      RECAPITALIZATION PRO FORMA
                                     ----------    ---------------- ---------
<S>                                  <C>           <C>              <C>
Sales..............................   $456,375         $   --       $456,375
Cost of sales......................    385,573             --        385,573
                                      --------         -------      --------
  Gross margin.....................     70,802             --         70,802
Selling, general and administrative
 expenses..........................     75,755             --         75,755
Depreciation and amortization......     16,861             --         16,861
Impairment charge..................      5,000             --          5,000
                                      --------         -------      --------
  Operating loss from continuing
   operations......................    (26,814)            --        (26,814)
Interest income....................        359             --            359
Interest expense...................    (24,356)         12,401(c)    (11,955)
Other expense, net.................       (502)            --           (502)
                                      --------         -------      --------
  Loss from continuing operations
   before income taxes.............    (51,313)         12,401       (38,912)
Income tax expense.................       (514)            -- (d)       (514)
                                      --------         -------      --------
  Loss from continuing operations..   $(51,827)        $12,401      $(39,426)
                                      ========         =======      ========
  Loss per common share from
   continuing operations...........   $  (1.72)(e)                  $  (0.23)(e)
                                      ========                      ========
</TABLE>    
      
   See also the Notes to Unaudited Pro Forma Condensed Consolidated Financial
                                Statements.     
 
                                       57
<PAGE>
 
   NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>   
<CAPTION>
                                                         MINIMUM      MAXIMUM
                                                       SUBSCRIPTION SUBSCRIPTION
                                                       ------------ ------------
   <S>                                                 <C>          <C>
   (a) Reflects the impact of changes in long-term
    debt resulting from:
       Repayment of CGE Note.........................    $125,000     $125,000
       Repayment of Anjou Note.......................      60,000       60,000
                                                         --------     --------
                                                         $185,000     $185,000
                                                         ========     ========
   (b) Changes in stockholders' equity resulting from
          the Recapitalization:
          Sale of Class A Common Stock at $1.75 per
          share......................................    $185,000     $210,000
       Estimated fees on sale of Class A Common Stock
        paid from available cash, including $1,500
        paid as of October 31, 1997 included in other
        assets.......................................      (5,000)      (5,000)
       Payment of dividend in arrears on Series A
        Preferred Stock..............................      (1,100)      (1,100)
                                                         --------     --------
                                                         $178,900     $203,900
                                                         ========     ========
</TABLE>    
   
  The maximum proceeds resulting from the sale of an additional 14,286 shares
of Class A Common Stock at $1.75 per share would result in the Company
receiving an additional $25,000 in gross proceeds to be used for general
corporate purposes. Including the 34,286 shares issued in exchange for the
Series A Preferred Stock, the total additional shares issued under the Minimum
Subscription is 140,000 and under the Maximum Subscription is 154,286.     
 
  (c) Reflects change in net interest expense resulting from the application
of the gross proceeds of the Recapitalization as follows:
 
<TABLE>   
<CAPTION>
                                                                   YEAR ENDED
                                                                OCTOBER 31, 1997
                                                                ----------------
   <S>                                                          <C>
   CGE Note (LIBOR plus 1.25%).................................     $  8,715
   Anjou Note (LIBOR plus 0.6%)................................        3,686
                                                                    --------
                                                                    $ 12,401
                                                                    ========
</TABLE>    
       
  (d) Due to the Company's tax position, the pro forma adjustments would not
have an impact on the Company's tax provision.
   
  (e) Loss per common share from continuing operations is calculated as
follows:     
 
<TABLE>   
<CAPTION>
                                                                  YEAR ENDED
                                                               OCTOBER 31, 1997
                                                               ----------------
   <S>                                                         <C>
    Average weighted shares outstanding......................        32,019
    Exchange of Series A Preferred Stock at $1.75 per share..        34,286
    Sale of 105,714 new shares of Class A Common Stock for
     cash at $1.75 per share (Minimum Subscription)..........       105,714
                                                                  ---------
    Adjusted weighted average shares (Minimum Subscription)..       172,019
                                                                  ---------
    Sale of 14,286 new shares of Class A Common Stock for
     cash at $1.75 per share (Maximum Subscription) .........        14,286
                                                                  ---------
    Adjusted weighted average shares (Maximum Subscription)..       186,305
                                                                  =========
   Pro Forma Calculation:
    Loss from continuing operations..........................     $ (39,426)
                                                                  =========
    Loss per share from continuing operations (Minimum
     Subscription)...........................................     $   (0.23)
                                                                  =========
    Loss per share from continuing operations (Maximum
     Subscription)...........................................     $   (0.21)
                                                                  =========
</TABLE>    
   
  Fully-diluted earnings per share are not presented as the assumed conversion
of the Company's $115,000 Convertible Debentures is assumed to be anti-
dilutive to amounts presented herein. The above calculation reflects the
elimination of dividends related to the Series A Preferred Stock assumed to be
exchanged.     
 
                                      58
<PAGE>
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
                      
                   (IN THOUSANDS, EXCEPT PER SHARE DATA)     
   
  The following selected consolidated financial data of the Company as of and
for the fiscal years ended October 31, 1996 and 1997 has been derived from, and
should be read in conjunction with, the consolidated financial statements and
related notes thereto as of and for the years then ended that have been audited
by McGladrey & Pullen, LLP, independent public accountants, and are included
elsewhere in this Prospectus. The following selected consolidated financial
data of the Company as of and for the years ended October 31, 1993, 1994 and
1995 has been derived from, and should be read in conjunction with, the
consolidated financial statements as of and for the years then ended that have
been audited by Arthur Andersen LLP, independent public accountants.     
 
<TABLE>   
<CAPTION>
                                  FISCAL YEARS ENDED OCTOBER 31,
                         -----------------------------------------------------
                           1993       1994       1995       1996       1997
                         ---------  ---------  ---------  ---------  ---------
<S>                      <C>        <C>        <C>        <C>        <C>
INCOME STATEMENT DATA:
Sales................... $ 299,365  $ 309,401  $ 398,661  $ 482,091  $ 456,375
Cost of sales...........   226,600    243,786    309,496    394,124    385,573
Selling, general and
 administrative
 expenses...............    48,256     64,814     66,697     62,316     75,755
Depreciation and
 amortization...........     7,036      9,969     12,279     13,983     16,861
Unusual charges.........       --      63,400        --         --       5,000
                         ---------  ---------  ---------  ---------  ---------
Operating income (loss)
 from continuing
 operations.............    17,473    (72,568)    10,189     11,668    (26,814)
Interest income.........       390        979      1,113        923        359
Interest expense........   (23,212)   (24,117)   (23,925)   (22,597)   (24,356)
Other expense, net......    (1,861)    (3,762)       (37)    (2,296)      (502)
                         ---------  ---------  ---------  ---------  ---------
Loss from continuing
 operations before
 income taxes and
 extraordinary item ....    (7,210)   (99,468)   (12,660)   (12,302)   (51,313)
Income tax (expense)
 benefit................       433     (1,172)      (587)     1,246       (514)
                         ---------  ---------  ---------  ---------  ---------
Loss from continuing
 operations before
 extraordinary item.....    (6,777)  (100,640)   (13,247)   (11,056)   (51,827)
 Income (loss) from
  discontinued
  operations............     1,222   (153,138)     5,262      5,788   (108,754)
 Extraordinary item.....       --      (8,000)       --         --         --
                         ---------  ---------  ---------  ---------  ---------
   Net loss.............    (5,555)  (261,778)    (7,985)    (5,268)  (160,581)
Preferred stock
 dividend...............        --     (1,245)    (3,300)    (3,300)    (3,300)
                         ---------  ---------  ---------  ---------  ---------
Net loss applicable to
 common stockholders.... $  (5,555) $(263,023) $ (11,285) $  (8,568) $(163,881)
                         =========  =========  =========  =========  =========
Earnings (loss) per
 common share (after
 preferred stock
 dividend):
 Continuing operations
  before extraordinary
  item.................. $   (0.27) $   (3.69) $   (0.52) $   (0.45) $   (1.72)
 Discontinued
  operations............      0.05      (5.54)      0.17       0.18      (3.40)
 Extraordinary item.....       --       (0.29)       --         --         --
                         ---------  ---------  ---------  ---------  ---------
 Net loss .............. $   (0.22) $   (9.52) $   (0.35) $   (0.27) $   (5.12)
                         =========  =========  =========  =========  =========
Weighted average shares
 outstanding............    24,812     27,632     32,018     32,018     32,019
                         =========  =========  =========  =========  =========
<CAPTION>
                                         AS OF OCTOBER 31,
                         -----------------------------------------------------
                           1993       1994       1995       1996       1997
                         ---------  ---------  ---------  ---------  ---------
<S>                      <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Working capital
 (deficit).............. $ 101,371  $ (51,206) $ (12,568) $   7,556  $ (55,802)
Total assets............   530,051    496,953    489,318    496,358    383,065
Goodwill................   126,552    177,888    174,601    169,578    164,337
Long-term debt..........   221,463    245,984    289,120    306,542    307,845
Stockholders' equity
 (deficit)..............   210,314     74,381     63,089     54,241   (109,262)
</TABLE>    
 
                                       59
<PAGE>
 
                 NOTES TO SELECTED CONSOLIDATED FINANCIAL DATA
          
(1) The Company has never declared or paid cash dividends on the Class A
    Common Stock, and the Bank Credit Facility prohibits the Company from
    declaring or paying cash dividends on the Class A Common Stock. The
    Company intends to retain its earnings, if any, to finance the growth and
    development of its business and to repay outstanding indebtedness and does
    not anticipate paying cash dividends on its Class A Common Stock in the
    foreseeable future.     
   
(2) The Company did not declare the quarterly dividend of $825,000 due
    September 30, 1997 on the Series A Preferred Stock, all of which was held
    by CGE, due to its concerns over liquidity and adequacy of its surplus.
    The Company currently intends to pay all such dividends in arrears ($1.1
    million at October 31, 1997) in connection with the Recapitalization.     
   
(3) See Note 2 to the Consolidated Financial Statements contained elsewhere in
    this Prospectus for discussion of the Recapitalization Agreement and the
    Company's relationship with CGE.     
   
(4) See Note 3 to the Consolidated Financial Statements contained elsewhere in
    this Prospectus for discussion of the planned Research-Cottrell
    divestiture and its related losses reflected in fiscal 1997.     
   
(5) On June 14, 1994, the Company acquired CGE's PSG water/wastewater
    management subsidiary for $70.2 million (6,701,500 shares of Class A
    Common Stock at the quoted market price at date of issuance, plus direct
    acquisition costs of $4.9 million), resulting in goodwill of $57.8
    million.     
   
(6) See Note 11 to the Consolidated Financial Statements contained elsewhere
    in this Prospectus for discussion of PSG's contract with PRASA.     
   
(7) The Company's results in 1994 include losses from discontinued operations
    including $38.2 million related to its asbestos abatement business
    ("Falcon"), $4.6 million related to its natural gas compressor and power
    generation system business ("Pamco") and $110.3 million related to its air
    pollution control business ("Research-Cottrell") including unusual charges
    of $81.8 million related to among other items, anticipated divestitures,
    deferred software and other asset write-offs and specific contract
    reserves and project costs overruns. The $8.0 million extraordinary loss
    reflected in 1994 resulted from a one-time premium required to retire $100
    million aggregate principal amount of 11.8% Senior Notes with The
    Prudential Insurance Company of America. The 1994 results also include
    unusual charges to continuing operations of $63.4 million related to among
    other items estimated costs to settle pending litigation including PRASA's
    dispute with Metcalf & Eddy, termination of certain leases and facility
    closings, employee termination benefits and various costs and asset
    writedowns related to certain businesses and specific projects.     
   
(8) Pro forma loss per share for the year ended October 31, 1997, after giving
    effect to the issuance of 140,000,000 shares of Class A Common Stock under
    the Minimum Subscription and the Exchange and approximately 154,286,000
    shares of Class A Common Stock under the Maximum Subscription and the
    Exchange and the application of the net proceeds necessary to fund the
    repayment of the CGE Note and Anjou Note, would be $(0.23) per share and
    $(0.21) per share, respectively.     
 
                                      60
<PAGE>
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
BACKGROUND
   
  The Company was organized by an investment group including Odyssey Partners,
L.P., Allen & Company Incorporated ("Allen & Company") and affiliates of First
Chicago Corporation to make a cash tender offer to purchase all of the
outstanding shares of capital stock of Research-Cottrell, Inc. ("RCI") and its
subsidiaries, (collectively, "Research-Cottrell"), including Metcalf & Eddy,
Inc. The Research-Cottrell acquisition was completed on July 13, 1987 (the
"Acquisition"). As a result of the Acquisition, the Company incurred
approximately $250 million in debt and recorded approximately $200 million in
goodwill. The Company's results of operations since the Acquisition have been
adversely affected by the interest expense related to the Acquisition debt,
which was refinanced in 1990, and the amortization of goodwill. See "--
Financial Condition" and the Notes to the accompanying Consolidated Financial
Statements.     
 
RESULTS OF OPERATIONS
   
  The Company operates principally in two segments: PSG which is focused on the
operation of water and wastewater treatment facilities and Metcalf & Eddy which
is focused on engineering consulting in the areas of water/wastewater and
hazardous waste remediation. On December 2, 1997, the Company announced its
decision to divest Research-Cottrell. See"--Financial Condition."     
 
  DEMAND FOR THE COMPANY'S SERVICES AND TECHNOLOGIES
   
  Demand for the Company's services and technologies arises principally from
three sources:     
 
  . need for governmental agencies to reduce costs through productivity
    improvements and improve the quality of services;
     
  . upgrade of existing facilities and the need for new capacity at water and
    wastewater treatment facilities and various industrial pollution sources,
    such as waste incineration and industrial process plants, which must
    comply with existing environmental legislation and regulations; and     
     
  . regulations mandating new or increased levels of water pollution control,
    water supply and solid waste management as well as remediation of
    contaminated sites.     
          
  DEPENDENCE ON KEY PROJECTS AND GOVERNMENT CONTRACTS     
 
  In any given period, a substantial percentage of the Company's sales is
dependent upon several large projects. To the extent that these projects are
canceled or substantially delayed and not replaced, it could have a material
adverse impact on the Company's sales and earnings.
   
  Approximately 90% of the Company's fiscal year 1997 gross revenues were
derived from contracts with federal, state, municipal and other governmental
agencies. The termination of any of the Company's significant contracts with
such governmental agencies, or the failure to obtain either extensions or
renewals of certain existing contracts or additional contracts with such
governmental agencies, could have a material adverse effect on the Company's
earnings and business.     
   
  In fiscal year 1997, PSG's contract with PRASA accounted for 38% of PSG's
total sales and 23% of the Company's total sales. Operations were initiated
under the contract on September 1, 1995. The contract has a five-year term but
PRASA may cancel the contract for any reason after August 31, 1998. Pursuant to
the contract, PSG manages 69 wastewater plants, 128 water treatment plants and
related collection and distribution systems and pumping stations in Puerto
Rico. The contract's profitability is contingent upon achieving certain
contract incentives. In addition, PSG had receivables of $34.3 million due from
PRASA for certain reimbursable costs at October 31, 1997. See "--Financial
Condition." The Company's wholly-owned subsidiary, PS Group of Puerto Rico,
Inc., is in the process of negotiations with PRASA regarding a replacement
contract for the existing five-year contract. Management currently expects that
the contract with PRASA will not be canceled by PRASA in August 1998, but will
remain in effect through its original five-year term ending August 2000 or be
amended or replaced with a new contract. Additionally, the PRASA employees who
operate the PRASA facilities are subject to a collective bargaining agreement
which expires in June 1998.     
 
                                       61
<PAGE>
 
          
  Summarized below is certain financial data including information relating to
the Company's business segments.     
 
<TABLE>   
<CAPTION>
                                              FISCAL YEARS ENDED OCTOBER 31,
                                              --------------------------------
                                                1995       1996        1997
                                              ---------- ---------- ----------
                                                      (IN THOUSANDS)
<S>                                           <C>        <C>        <C>
SALES:
  Professional Services Group...............  $ 179,713  $ 270,640  $  271,650
  Metcalf & Eddy............................    216,852    215,358     186,490
  Other and eliminations....................      2,096     (3,907)     (1,765)
                                              ---------  ---------  ----------
                                              $ 398,661   $482,091  $  456,375
                                              ---------  ---------  ----------
COST OF SALES:
  Professional Services Group...............  $ 151,893   $242,225  $  241,538
  Metcalf & Eddy............................    158,068    155,806     145,800
  Other and eliminations....................       (465)    (3,907)     (1,765)
                                              ---------  ---------  ----------
                                              $ 309,496   $394,124  $  385,573
                                              ---------  ---------  ----------
SELLING, GENERAL AND ADMINISTRATIVE EX-
 PENSES:
  Professional Services Group...............  $  12,542  $  13,657  $   20,169
  Metcalf & Eddy............................     42,057     39,939      47,136
  Other.....................................      2,524        --          --
  Corporate (unallocated)...................      9,574      8,720       8,450
                                              ---------  ---------  ----------
                                              $  66,697  $  62,316  $   75,755
                                              ---------  ---------  ----------
DEPRECIATION AND AMORTIZATION:
  Professional Services Group...............  $   5,679  $   7,335  $    8,119
  Metcalf & Eddy............................      5,691      6,223       8,227
  Other.....................................        307        --          --
  Corporate (unallocated)...................        602        425         515
                                              ---------  ---------  ----------
                                              $  12,279  $  13,983  $   16,861
                                              ---------  ---------  ----------
IMPAIRMENT CHARGE:
  Professional Services Group...............  $     --   $     --   $      --
  Metcalf & Eddy............................        --         --          --
  Other.....................................        --         --          --
  Corporate (unallocated)...................        --         --        5,000
                                              ---------  ---------  ----------
                                              $     --   $     --   $    5,000
                                              ---------  ---------  ----------
OPERATING INCOME (LOSS):
  Professional Services Group...............  $   9,599  $   7,423  $    1,824
  Metcalf & Eddy............................     11,036     13,390     (14,673)
  Other.....................................       (270)       --          --
  Corporate (unallocated)...................    (10,176)    (9,145)    (13,965)
                                              ---------  ---------  ----------
                                              $  10,189  $  11,668  $  (26,814)
                                              ---------  ---------  ----------
Interest expense, net.......................  $ (22,812) $ (21,674) $  (23,997)
Other expense, net..........................        (37)    (2,296)       (502)
Income tax (expense) benefit................       (587)     1,246        (514)
                                              ---------  ---------  ----------
Loss from continuing operations.............    (13,247)   (11,056)    (51,827)
Income (loss) from discontinued operations..      5,262      5,788    (108,754)
                                              ---------  ---------  ----------
Net loss....................................  $  (7,985) $  (5,268) $ (160,581)
                                              =========  =========  ==========
</TABLE>    
 
                                      62
<PAGE>
 
   
FISCAL YEAR ENDED OCTOBER 31, 1997 COMPARED TO FISCAL YEAR ENDED OCTOBER 31,
1996     
 
 Overview
   
  As discussed in more detail with the comparison of each segment's results,
the Company's net loss increased from $5.3 million during the year ended
October 31, 1997 to $160.6 million (including losses from discontinued
operations of $108.8 million) during the year ended October 31, 1997. This was
primarily the result of certain operating charges and asset write-offs,
including charges taken in connection with the planned Research-Cottrell
divestiture, all as more fully described below. Sales have decreased from
$482.1 million to $456.4 million primarily due to lower Metcalf & Eddy sales
volumes as a result of delays in awards of new contracts. At October 31, 1997,
the Company's total backlog was approximately $1.1 billion and consisted of
PSG (78%) and Metcalf & Eddy (22%).     
   
 Revised Business Strategy     
   
  During the second quarter of 1997, the Company completed a review of its
operations' three year business plans. These plans included a detailed
analysis of markets, growth opportunities and forecasted three year operating
results, cash flows and return on capital employed for each business segment.
As a result of this review, management considered the actions necessary to
redeploy its capital to PSG and Metcalf & Eddy, its core water business. The
strategic analysis conducted led to the conclusion that the Company did not
have the overall size and expertise to grow the air pollution control
businesses profitably. Among other factors contributing to this approach were
recent tax law changes which may extend the duration of OM&M contracts and
create additional opportunities within the water and wastewater treatment
markets which are the primary markets for PSG and Metcalf & Eddy. See
"Business--The Water/Wastewater Privatization Market."     
   
  Furthermore, the returns on capital employed within the PSG and Metcalf &
Eddy segments are forecasted to be greater than the returns for the Research-
Cottrell segment. From a competitive standpoint, management also believes that
the Company has greater competitive advantages and market penetration through
its PSG and Metcalf & Eddy businesses than what has been achieved by its
Research-Cottrell operations.     
   
  As a result of the above, management assessed the impact of de-emphasizing
the Research-Cottrell business segment and redeploying its capital to its PSG
and Metcalf & Eddy segments. A financial advisor was retained to assist the
Company in exploring strategic alternatives related to this redeployment. On
December 2, 1997, the Company announced its decision to divest Research-
Cottrell. The Company is currently in negotiations with several interested
parties and expects that most of the air pollution control businesses operated
through Research-Cottrell will be sold within the next several months.     
       
 Professional Services Group
   
  Operating income was $1.8 million for the year ended October 31, 1997 and
reflects a $5.6 million decrease from the comparable 1996 period primarily due
to certain operating charges and asset write-offs which approximated $6.9
million. These charges were primarily related to professional fees of $5.7
million related to marketing consultants, the DOJ Investigation and certain
litigation matters, and provisions of $1.2 million for revised collectibility
estimates for certain non-current note receivables. Excluding the effect of
the aforementioned charges, the operating results were $1.3 million higher
than the comparable 1996 period due to the timing of certain contractual
incentive clauses realized under the PRASA project.     
 
  Sales remained comparable to the prior period as a result of the
privatization market developing more slowly than anticipated. Although the
Company has been successful in obtaining contract renewals, it continues to
experience delays in negotiating and closing new business opportunities due to
municipal clients' implementation schedules.
 
                                      63
<PAGE>
 
 Metcalf & Eddy
   
  The operating loss of $14.7 million for the year ended October 31, 1997 was
primarily the result of $19.4 million of charges, including $5.5 million of
provisions required in order to properly reflect the Company's revised
estimates for the collectibility of certain receivables based on recent
adverse developments in contract negotiations and collection efforts; $6.0
million of increases to its reserves for litigation, professional liability
and certain project contingencies due to revised estimates of the expected
outcome of certain unasserted and asserted claims and litigation incurred in
the normal course of business; $3.4 million of equipment write-offs; a $1.7
million charge related to a cancellation penalty for a high cost leased
facility; and other direct and indirect costs of $2.8 million.     
   
  In addition to the effect of the aforementioned charges, lower sales volume
and gross margin rates and higher depreciation expenses, partially offset by
lower selling, general and administrative expenses, reduced the operating
results by $8.7 million from the comparable prior period ended October 31,
1996. The reduction in sales volume of $28.9 million during the period reduced
the operating results by $8.0 million due to delays in obtaining task order
releases primarily within the hazardous waste remediation service lines,
several contracts which were awarded to competitors and delayed procurement in
international markets. Delays are increasing due to funding and administrative
issues with certain government agencies (e.g., EPA and Department of Defense).
The lower gross margin rates reduced the operating results by $2.9 million
during the period primarily due to favorable pricing adjustments reflected in
the prior periods, pricing pressures and a business mix shift from self-
performed work to subcontracted work. Partially off-setting the lower margins
were selling, general, and administrative expense reductions of $2.9 million
during the year ended October 31, 1997 as compared to the comparable 1996
period as a result of lower personnel related costs including discretionary
and self insured employee benefit costs. This increase in depreciation and
amortization from the prior comparable period primarily resulted from the
reduction of the estimated useful lives of computer equipment.     
       
 Corporate and Other
   
  The unallocated corporate costs were comparable to the prior period except
for the $5.0 million impairment charge related to the Branchburg, New Jersey
property which is anticipated to be sold. In addition, higher average
borrowings resulted in increased interest expense.     
   
 Discontinued Operations--Research-Cottrell     
   
  The loss from discontinued operations for the year ended October 31, 1997
was $108.8 million including a loss on disposal of $63.9 million, significant
operating charges of $40.5 million, other operating losses of $2.9 million and
non-operating expenses of $1.5 million. The loss on disposal was developed
using a range of estimated proceeds based on current negotiations with several
potential buyers of the businesses and also includes estimated future losses
of $8.5 million through the estimated disposal date. The significant operating
charges include a $25.0 million impairment charge recognized during the second
quarter primarily related to a writedown of goodwill and other non-current
assets of Ecodyne and KVB, receivable provisions of $3.4 million at Ecodyne
and R-C International, warranty provisions of $10.0 million at RC
International and Custodis and $2.1 million of higher than anticipated costs
on a specific APCD project. In addition to the loss on disposal and
significant operating charges, the remaining operating loss was due to lower
sales volume and reduced margin rates as a result of fewer bid opportunities
due to delays in issuing new air quality standards by the EPA, lack of
enforcement of existing standards, price pressures from highly competitive
markets and project execution.     
       
       
FISCAL YEAR ENDED OCTOBER 31, 1996 COMPARED TO FISCAL YEAR ENDED OCTOBER 31,
1995
 
 Overview
   
  As discussed in more detail with the comparison of each segment's results,
the Company's net loss decreased from $8.0 million during the year ended
October 31, 1995 to $5.3 million during the year ended October 31, 1996. The
results for the year reflected decreases in operating margins (primarily for
PSG) due to     
 
                                      64
<PAGE>
 
   
the highly competitive marketplace and increases in selling and marketing
expenses (primarily for PSG) which were partially offset by overhead
reductions within Metcalf & Eddy and Corporate. Sales increased from $398.7
million to $482.1 million primarily due to increased service revenues
associated with PSG's contract with PRASA. At October 31, 1996, the Company's
backlog was approximately $1.0 billion and consisted of PSG (78%) and Metcalf
& Eddy (22%).     
       
 Professional Services Group
   
  Operating income was $7.4 million for the year ended October 31, 1996 and
reflects a $2.2 million decrease from the comparable prior period due to
additional selling, general and administrative expenses as well as
depreciation and amortization related to growth initiatives which were
partially off-set by higher gross margins. The increase in PSG's sales is a
result of the PRASA contract which began September 1, 1995 and has not had a
proportional impact on operating income.     
 
 Metcalf & Eddy
   
  Although sales remained comparable to the prior year, Metcalf & Eddy's
operating income increased by $2.4 million during the year ended October 31,
1996. The higher operating income was attributable primarily to personnel,
facilities and insurance cost reductions which resulted in a decrease in
selling, general and administrative expenses of $2.1 million. In addition,
estimated favorable pricing adjustments partially offset the impact of
unfavorable sales mix to more design/build and construction type projects.
       
 Corporate and Other     
   
  The corporate (unallocated) selling, general and administrative expenses
decreased by $0.9 million during the year ended October 31, 1996 due to cost
reduction efforts, including personnel related costs and professional fees.
The results for the year compared to the prior year were also favorably
impacted by slightly lower financing costs and the favorable resolution of
several pending tax issues.     
   
 Research-Cottrell     
   
  Income from discontinued operations increased by $0.5 million primarily due
to an increase in non-operating income in 1997 partially offset by a decrease
in operating income. Operating income decreased by $0.6 million during the
year ended October 31, 1996 from the comparable prior period. The changes in
operating income reflect the decreases in margin rates in most business units
caused by price pressures from highly competitive markets, unfavorable product
line mix and project execution. Partially off-setting the reduced margins are
lower selling, general and administrative expenses of $3.2 million during the
year ended October 31, 1996 (primarily at its APCD and KVB operations).
International sales volume continued to increase by $10.7 million due to
improved market penetration during the aforementioned period, however the
higher sales related to international activities were more than offset by
lower sales volume in KVB of $11.0 million during the year ended October 31,
1996. KVB's lower volume, compared with the prior period, is due to the
fulfillment of orders for equipment required by utility customers to comply
with the Clean Air Act Amendments of 1990.     
       
       
FINANCIAL CONDITION
   
  During the year ended October 31, 1997, cash generated by operating
activities was $15.0 million including $13.9 million from discontinued
operations. The operating activities of continuing operations generated $1.1
million after interest payments of $23.6 million. The $15.0 million increase
in receivables and $23.1 million increase in payables were primarily related
to PSG's contract with PRASA under which certain unreimbursed costs paid on
behalf of PRASA have not been collected ($34.3 million at October 31, 1997),
and the payment of certain power costs to the Puerto Rico Electric Power
Authority ("PREPA") ($33.2 million at October 31, 1997) has been delayed.
Management believes that such receivables will be fully collected and will be
used to pay the power costs due to PREPA. The cash generated from discontinued
operations was primarily related to various working capital reductions of
Research-Cottrell due to lower sales volume and the sale of certain
businesses.     
 
                                      65
<PAGE>
 
   
The Company typically has receivables in which the ultimate realizability is
dependent upon the successful negotiation or resolution of contractual issues
or disputes as well as the client's ability to fund and pay the amounts due.
Historically, significant charges have been reflected as provisions for
receivable reserves and write-offs including those reflected in the current
period. Management believes that adequate provisions have been made to the
receivable balances reflected in the October 31, 1997 financial statements;
however, additional provisions may be required in the future based on new
developments which may arise in the near term related to the factors discussed
above.     
          
  Investment activities required $12.2 million of cash during the year ended
October 31, 1997 including $1.0 million for Research-Cottrell's capital
expenditures. Investments related to the start up of operations, maintenance
and management of treatment facilities within the PSG segment were $7.9
million. Capital expenditures of $4.9 million were made in the PSG and Metcalf
& Eddy segments primarily for computer and field equipment and leasehold
improvements. Proceeds of $2.0 million from the sale of certain Research-
Cottrell operations and other assets were also received during the year. As
discussed more fully below, significant investments may be required in the near
term due to current growth initiatives.     
   
  Financing activities required $3.4 million of cash during the year ended
October 31, 1997 primarily due to the payment of cash dividends of $2.5 million
paid on the Series A Preferred Stock and fees of $1.5 million related to the
Recapitalization, partially offset by net borrowings under credit facilities of
$1.7 million discussed more fully below.     
       
  In connection with the Investment Agreement, the Company maintains a $125
million unsecured term loan with CGE. The CGE Note bears interest at one, two,
three or six-month LIBOR, as selected by the Company, plus 1.25% and has a
final maturity of June 15, 2001. The CGE Note contains certain financial and
other restrictive covenants with respect to the Company relating to, among
other things, the maintenance of certain financial ratios, and restrictions on
the sale of assets and the payment of dividends on or the redemption,
repurchase, acquisition or retirement of securities of the Company or its
subsidiaries. The Company expects to repay the CGE Note with a portion of the
gross proceeds from the Rights Offering. See "Use of Proceeds."
   
  The Company also maintains a $60.0 million seven-year unsecured revolving
credit facility with Anjou. The facility matures on August 2, 2003. As of
October 31, 1997, the Company's outstanding borrowings under the facility
totaled $60.0 million. The Anjou Note bears interest at LIBOR plus 0.6%. The
Company expects to repay the Anjou Note with a portion of the gross proceeds
from the Rights Offering. See "Use of Proceeds."     
   
  The Company also maintains the three-year senior secured Bank Credit Facility
which was increased by $20.0 million to $70.0 million as of April 28, 1997. As
of October 31, 1997, the Company's borrowings under the Bank Credit Facility
totaled $3.0 million and outstanding letters of credit under the Bank Credit
Facility totaled $22.5 million (unused capacity of $44.5 million).     
   
  As of December 12, 1997, the configuration and structure of the Bank Credit
Facility was revised. As a result of this revision Societe Generale purchased
and assumed from all of the other Lending Banks all of such banks' rights and
obligations under the Bank Credit Facility, becoming the sole lending bank
thereunder, and the Company and Societe Generale entered into the Amendment to
extend the Bank Credit Facility until December 11, 1998. The Bank Credit
Facility had been scheduled to expire on March 31, 1998. The Amendment waives
the Company's compliance with certain covenants and amends others. The prior
amendments and waiver would have terminated on December 15, 1997 had the Bank
Credit Facility not been amended.     
   
  The Bank Credit Facility is primarily designed to finance working capital
requirements, subject to certain limitations, and provide for the issuance of
letters of credit, and is secured by a first security interest in substantially
all of the assets of the Company. Of the total commitment, borrowings are
limited to the lesser of $70.0 million or the sum of a percentage of certain
eligible receivables, inventories, net property, plant and equipment and costs
and estimated earnings in excess of billings, and bear interest at LIBOR plus
1.25%, or at a defined bank rate approximating prime. The Bank Credit Facility
also allows for certain additional borrowings, including, among other things,
project financing and foreign borrowing facilities, subject to limitations, and
contains certain financial and other restrictive covenants, including, among
other things, the maintenance of     
 
                                       66
<PAGE>
 
   
certain financial ratios, and restrictions on the incurrence of additional
indebtedness, acquisitions, the sale of assets, the payment of dividends and
the repurchase of subordinated debt. In addition, the related agreement
requires CGE to maintain its support of the Company, including, a minimum 48%
voting equity ownership interest in the Company and its right to designate at
least 48% of the Company's Board of Directors as well as to appoint the Chief
Executive Officer and the Chief Financial Officer of the Company. The Company
compensates CGE for its support in an amount equal to 0.95% per annum of the
outstanding commitment of its credit facilities ($1.2 million, $1.2 million
and $0.8 million for the years ended October 31, 1997, 1996 and 1995,
respectively).     
          
  The Company's ability to comply with the financial and other covenants in
such agreements beyond March 31, 1998 is substantially dependent upon the
completion of the Rights Offering. Failure to complete the Rights Offering may
require additional waivers or amendments to the Bank Credit Facility. There
can be no assurance that such waivers or amendments could be obtained. In the
absence of a waiver or amendment, Societe Generale would have the right to
refuse any further extensions of credit and the right to accelerate payment of
all outstanding amounts under the Bank Credit Facility. In addition,
substantially all of the Company's long-term debt and certain other financial
and non-financial obligations contain cross-default or acceleration
provisions. In the event the Company were required to repay accelerated
outstanding amounts under the Bank Credit Facility and other obligations, the
Company does not believe that it will have financial resources adequate to
repay such amounts and to satisfy its ongoing working capital requirements.
Therefore, the failure to complete the Rights Offering could have a material
adverse effect on the Company's business prospects and on its financial
condition and liquidity.     
   
  On September 24, 1997, the Company, CGE and Anjou entered into the
Recapitalization Agreement, whereby the Company would restructure its debt and
retire all of the outstanding shares of Series A Preferred Stock. The
consummation of the transactions contemplated by the Recapitalization
Agreement will reduce the Company's annual interest expense by approximately
$12.4 million and eliminate $3.3 million of annual dividends on the Series A
Preferred Stock.     
   
  As of December 19, 1997, the Company has Bank Credit Facility borrowings of
$14.8 million and outstanding letters of credit under the Bank Credit Facility
of $22.9 million. In addition to the $32.3 million of unused capacity under
its Bank Credit Facility at December 19, 1997, the Company believes it can
finance its on-going operations in the near term (including additional working
capital requirements if a growth in sales occurs, but excluding the
significant investments discussed below) through improved working capital
management by focusing on Metcalf & Eddy's past due receivables, asset
divestitures related to the Research-Cottrell segment and reduction of
financing costs through the strengthening of its current capital structure as
contemplated by the Recapitalization. A significant amount of planned asset
divestiture proceeds is expected to fund the related retained liabilities,
however, the cash outlays may occur during different periods.     
   
  The businesses of the Company have not historically required significant
ongoing capital expenditures. For the years ended October 31, 1997, 1996 and
1995 total capital expenditures were $5.0 million, $6.3 million and $5.4
million, respectively. At October 31, 1997, the Company had no material
outstanding purchase commitments for capital expenditures, however, following
the Recapitalization, the Company will require additional financial resources
to develop and support each of its business at PSG and Metcalf & Eddy, to
undertake related long-term capital expenditures or other investments and to
participate in the emerging privatization market in the wastewater management
industry. CGE has informed the Company that it intends to work with the
Company to explore various ways to develop such financial resources for these
purposes, including, among others, the raising by CGE of an investment fund or
other off-balance sheet vehicle which would invest, on a case-by-case basis,
in various project financings undertaken by the Company. It is anticipated
that any such vehicle would invest in such project finance activities of the
Company on terms which are commercially reasonable. As a result, CGE and the
Company and possibly others, investing either directly through such vehicle or
otherwise, would share in the returns on such projects pro rata in relation to
their respective equity investments.     
 
 
                                      67
<PAGE>
 
   
  The Company is often required to procure bid and performance bonds from
surety companies, particularly for clients in the public sector. A bid bond
guarantees that the Company will enter into the contract under consideration
at the price bid and a performance bond guarantees performance of the
contract. In August 1997, USF&G notified the Company that it would suspend the
renewal and issuance of new bid and performance bonds as of September 30,
1997, due to the Company's operating performance and resulting financial
condition as reported at the end of the fiscal quarter ended April 30, 1997,
unless it received indemnification from CGE or Anjou for at least 20% of all
future bond requests including renewals. Anjou has entered into an agreement
with USF&G regarding an arrangement pursuant to which, until terminated at
Anjou's discretion, Anjou will enter into guarantees of certain obligations of
the Company relating to the bonding of certain contracts under the Master
Surety Agreement dated as of October 31, 1995 between USF&G and the Company
and its subsidiaries. Such guarantees would cover, in each instance, 30% of
the aggregate amount of the bonds executed, procured or provided on behalf of
the Company or its subsidiaries on or after October 1, 1997, and certain
penalty amounts, up to $45 million. There can be no assurance that USF&G will
be willing to provide bid bonds to the Company following the Recapitalization
without a guarantee from CGE (or one of its affiliates), and there can be no
assurance that CGE would be willing to provide such a guarantee following the
Recapitalization. See "--Dependence on Key Projects and Government Contracts,
"Risk Factors--Dependency on Key Projects and Government Contracts" and "Risk
Factors--USF&G Guarantees by CGE."     
   
  The realizability of goodwill and other long lived assets is the result of
an estimate based on the underlying assets' remaining estimated useful lives
and projected operating cash flows. It is possible that this estimate will
change as a consequence of further deterioration in market conditions and
operating results. The effect of a change, if any, would be material to the
financial condition or results of operations. At October 31, 1997, unamortized
goodwill was $164.3 million.     
   
YEAR 2000 ISSUE     
   
  Based on a preliminary study by management, the Company expects to incur
approximately $3 million during 1998 and 1999 to modify its information
systems appropriately to accurately process information in the year 2000 and
beyond. The Company continues to evaluate appropriate courses of corrective
action, including replacement of certain systems whose associated costs would
be recorded as assets and amortized. Management expects that the costs to
convert the Company's information systems to year 2000 compliance will not
have a material impact on the Company's consolidated financial statements.
    
                                      68
<PAGE>
 
FORWARD LOOKING STATEMENTS
 
  CAUTIONARY STATEMENT FOR PURPOSES OF THE "SAFE HARBOR" PROVISIONS OF THE
PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995.
   
  The Private Securities Litigation Reform Act of 1995 provides a "safe
harbor" for forward-looking statements so long as those statements are
identified as forward-looking and are accompanied by meaningful cautionary
statements identifying important factors that could cause actual results to
differ materially from those projected in the statement. Included herein are
certain forward-looking statements concerning the Company's operations,
economic performance and financial condition, including, in particular,
forward-looking statements regarding the Company's expectation of future
performance following implementation of its revised business strategy. Such
statements are subject to various risks and uncertainties. Accordingly, the
Company hereby identifies the following important factors that could cause the
Company's actual financial results to differ materially from those projected,
forecasted, estimated or budgeted by the Company in such forward-looking
statement:     
 
  . The Company's highly competitive marketplace.
 
  . Changes in as well as enforcement levels of federal, state and local
    environmental legislation and regulations that change demand for a
    significant portion of the Company's services.
 
  . Adverse developments in the DOJ Investigation.
 
  . Dependency on key projects, customers and contracts.
 
  . The ability to obtain new contracts (some of which are significant) from
    existing and new clients.
 
  . The execution of the expected new projects and those projects in backlog
    within the most recent cost estimates.
 
  . Changes in interest rates causing an increase in the Company's effective
    borrowing rate.
 
  . Adverse resolution of litigation matters and existing claims arising in
    the ordinary course of business.
 
  . The extent of public participation in the Rights Offering.
 
  . The failure to consummate the Rights Offering by the end of the second
    quarter of fiscal 1998.
     
  . The ability of the Company to access capital (through an investment fund,
    off-balance sheet vehicle or otherwise) and to effect and finance future
    investments.     
 
  . The ability of the Company to obtain any necessary waivers, extensions or
    renewals of the Bank Credit Facility.
 
  . The acceptance by the Company's current and prospective customers of the
    Company's financial position following the Recapitalization.
 
  . The effectiveness of the Business Planning Committee in identifying
    strategies aimed at increasing stockholder value.
 
                                      69
<PAGE>
 
                                   BUSINESS
 
OVERVIEW
   
  Air & Water Technologies Corporation, through its subsidiaries, provides a
comprehensive range of services and technologies directed principally at
providing complete services for the operation, maintenance and management of
water and wastewater treatment systems; engineering, design and construction
of water and wastewater facilities; the remediation of hazardous waste; and
services and technologies for controlling air pollution. The Company believes
it provides a complement of products and services that satisfy the
environmental and essential services needs of its targeted client base. The
Company markets its products and services through two widely recognized trade
names: Professional Services Group for the operation, maintenance and
management of water and wastewater treatment systems and Metcalf & Eddy for
water, wastewater and hazardous waste engineering and consulting services. PSG
provides operation, maintenance and management services for treatment systems
in various water, wastewater, sludge and biosolids waste management markets.
Metcalf & Eddy provides its clients with a broad spectrum of environmental
consulting services, including engineering studies and design, project
management, site evaluation, environmental assessment and master planning. On
December 2, 1997, the Company announced its decision to divest Research-
Cottrell. Research-Cottrell designs and develops products and technologies
targeted at specific client needs such as air pollution control equipment. The
Company is currently in negotiations with several interested parties and
expects that most of the air pollution control businesses operated through
Research-Cottrell will be sold within the next several months. The Company
provides its full complement of products and services to predominantly four
major customer sectors: the electric generating industry; the solid waste
incineration industry; governmental entities, including municipalities and
state and federal agencies; and specific industrial categories, such as
petroleum refining, pulp and paper, pharmaceutical, chemical, primary and
secondary metals, food processing, printing and furniture manufacture.     
   
  PSG provides its clients with operation, maintenance and management services
for treatment systems in the various water and wastewater and sludge and
biosolid waste management markets. These services range from assisting owners
and operators in addressing individual operating needs to the assumption by
PSG of complete responsibility for operating complex treatment systems. PSG
provides operation, maintenance and management services for water supply and
wastewater treatment systems, primarily for cities, municipalities and other
local governmental entities. PSG also serves the industrial market and federal
and state governments by providing OM&M services for wastewater treatment
systems and groundwater remediation treatment systems. PSG has experience
dealing with the planning and implementation of large biosolids management
programs, including composting facilities.     
 
  Metcalf & Eddy's services are directed principally at the protection of
public health and the environment in an efficient, cost-effective manner
through sound water resources management, hazardous waste remediation and
solid waste disposal. These services include protection, treatment and
distribution of water from surface and groundwater sources; collection,
treatment and disposal of wastewater and its associated by-products such as
sludge; pretreatment of industrial wastewater prior to discharge into a
municipal system or on-site treatment and disposal; remediation of hazardous
waste sites involving contaminated soils and groundwater; monitoring and
closure of sanitary landfills with disposal of associated leachate; and
management and transportation of hazardous waste. In addition, Metcalf & Eddy
provides expertise in environmental science, institutional and public policy
support, regulatory compliance and the use of innovative technologies to meet
clients' needs.
   
  Research-Cottrell's air pollution control related technologies and services
are directed principally at cost-effectively reducing air pollution, treating
thermal discharges, dispersing airborne contaminants, continuously monitoring
emissions and providing engineering services for a wide range of industrial
processing plants and power generation facilities in the United States and
internationally. Research-Cottrell's services include identifying and
analyzing air pollution control problems and recommending effective and cost-
efficient control options; designing and engineering treatment facilities and
equipment; procuring, fabricating, constructing and installing air pollution
control equipment; and providing overall project management. In addition,
Research-Cottrell provides high quality replacement parts and expert
maintenance and repair services for its own base of installed equipment as
well as equipment provided by others on a routine outage and emergency
response basis.     
 
                                      70
<PAGE>
 
   
Research-Cottrell's air pollution control technologies includes electrostatic
precipitators; fabric filters; NOx and acid gas control technologies; concrete
chimneys and steel stacks; industrial dust collector systems; continuous
emissions monitoring devices; technologies for the destruction or capture of
volatile organic compounds, or VOCs and heat exchangers, fired heaters and
recuperators. These technologies are provided separately or can be combined
into an integrated pollution control system.     
 
THE WATER/WASTEWATER PRIVATIZATION MARKET
 
  The Company believes that its redeployment of capital and revised business
strategy will facilitate the participation of PSG and Metcalf & Eddy in the
emerging privatization market in the water and wastewater treatment industry.
   
  The Company believes that the water/wastewater privatization market has
reached a critical juncture in its development. More than ever before, both
small and large municipalities are entering into privatization arrangements and
adopting alternative forms of public/private partnerships ("PPPs").
Historically, the market has been dominated by short-term (three to five-year)
OM&M contracts. However, recently, the market has shown indications of a
potential shift to longer-term contracts. Two recent Presidential Executive
Orders and a recent IRS Rule Change have been issued which generally facilitate
the implementation of PPPs and allow for greater flexibility and creativity in
structuring PPPs. The new regulations make it easier for municipalities to
enter into long-term OM&M contracts.     
   
  Long-term partnerships will make it easier for municipalities to assign
responsibility of entire systems to private operators such as PSG whose core
competency is to operate, maintain and manage water and wastewater treatment
systems. As a complete service provider, the Company through PSG will be
capable of providing not only standard OM&M services, but also design/build of
treatment facilities through Metcalf & Eddy, as well as arranging for financing
for capital improvements, financing capital improvements or arranging for
financing for up-front capital payments that the community can apply toward
other uses.     
   
  The water and wastewater privatization market in the United States and its
territories is estimated to be, on an annual basis, a $1.1 billion market.
Revenues of the top seven companies total approximately $600 million or 55% of
the total market. Among the top seven companies, PSG has a 45% share of that
market segment. Overall, PSG commands a 25% share of the total $1.1 billion
market.     
 
  According to industry analysts, the water and wastewater treatment industry
is poised for significant short-term and long-term growth. Analysts predict
growth in annual revenue generation from the issuance of major new contracts to
set the pace for the water industry at 15-25% over the next four years.
Industry growth is the result of several market factors including cost savings;
more reliable and higher quality private sector delivery of necessary public
services; guaranteed performance and regulatory compliance; relief from day-to-
day operational, management and administrative burdens; enhanced risk
management; and achievement of user rate stabilization and system cost
containment. Additional market factors encouraging the implementation of more
sophisticated PPPs include private sector time/cost efficiencies for the
design/build portion of a project; shift of future responsibility for capital
improvements to the private sector; use of private sector financing to
accomplish needed capital improvements; and the ability to monetize the asset
(i.e., secure up-front cash payments).
 
  The Company believes that PSG is well-positioned to take advantage of
industry growth and continue its market leadership role. In addition to being a
market leader for short-term OM&M contracts, PSG is among a few firms
pioneering alternative forms of PPPs. PSG has already converted four existing
contracts into long-term contracts through contract renewals as a result of the
IRS Rule Change and currently is pursuing several additional long-term contract
renewals. Examples of the shift towards other types of PPPs include the
Franklin, Ohio asset sale to a private sector company; Franklin, Ohio's PPP for
the design/construction/finance/operation and ownership of a new water
treatment facility; the Freeport, Texas design/build/finance/operate project;
the long-term OM&M agreement in North Brunswick, New Jersey; and the Cranston,
Rhode Island 25-year lease transaction. Freeport and Cranston are PSG projects.
 
                                       71
<PAGE>
 
   
  PSG believes that the Freeport, Texas project and Cranston, Rhode Island
lease were among firsts in the water and wastewater industry. In the Freeport,
Texas project, the City of Freeport asked PSG to act as a total service
provider and not just a contract operator. PSG was engaged to operate the City
of Freeport's water and wastewater systems and in addition undertook the
design/build of its wastewater facility upgrade to comply with a consent
order. PSG utilized Metcalf & Eddy for the design/build portion of the
project, arranged for the financing of the upgrade and managed the process for
the issuance of City of Freeport revenue bonds.     
 
  In March 1997, a team including PSG and Metcalf & Eddy won the first long-
term lease transaction in the United States water and wastewater industry. PSG
will be the operator for the entire wastewater treatment system in Cranston,
Rhode Island for the next twenty-five years. Metcalf & Eddy will provide
design/build services for certain capital improvements which will bring the
city into compliance with environmental regulations at a fraction of the
previously estimated cost.
 
  To compete effectively in the emerging water and wastewater privatization
market, the Company will require access to capital for expenditures relating
to long-term OM&M contracts. Following the Recapitalization the Company will
explore various means of obtaining such capital, including through an
investment fund or other off-balance sheet vehicle with the assistance of CGE.
See "Certain Relationships and Related Transactions-- Recapitalization
Agreement; Other CGE Related Matters."
 
PROFESSIONAL SERVICES GROUP-OPERATION, MAINTENANCE AND MANAGEMENT OF TREATMENT
SYSTEMS
 
  OVERVIEW
 
  Prior to its acquisition by the Company from CGE pursuant to the Investment
Agreement, PSG had been a wholly-owned subsidiary of Anjou. Since 1978, PSG
has been operating, maintaining and managing water and wastewater treatment
systems, sludge and biosolid waste disposal programs and public works
projects, and providing operations assistance primarily to municipal entities
but also to industrial companies. In the following description, references to
PSG are intended to include, where appropriate, the operation, maintenance and
management services of Metcalf & Eddy Services, a subsidiary of the Company
involved in the substantially identical business as PSG that has been
integrated with PSG subsequent to June 14, 1994. See "--Metcalf & Eddy-Water
and Wastewater Treatment/Hazardous Waste Remediation."
 
  OPERATION AND MAINTENANCE SERVICES
   
  PSG provides operation, maintenance and management services for treatment
systems in the various water and wastewater and sludge and biosolid waste
management markets. These services range from assisting owners and operators
in addressing individual operating needs to the assumption by PSG of complete
responsibility for operating complex treatment systems. PSG does not, however,
own any treatment facilities except for a municipal sludge composting facility
in Baltimore, Maryland and two wastewater treatment plants in Auburn, Alabama.
Based on annual revenues, PSG is the market leader in providing operation,
maintenance and management services for water and wastewater treatment systems
and sludge and biosolid waste management services, particularly in the area of
large municipal waste treatment systems. In size and scope, PSG rivals the
largest municipal wastewater systems in the United States if its projects were
viewed as a single wastewater system. PSG operates in thirty-five states,
Canada and Puerto Rico and it provides services to approximately 385
facilities (approximately 220 wastewater and 165 water treatment plants) at
over 115 locations. In the United States, PSG currently has 135 projects,
concentrated east of the Mississippi, with the highest concentration in the
Northeast. See Figure 1.1 which depicts the geographic presence of PSG. PSG on
a daily basis treats approximately 590 million gallons of water and 630
million gallons of wastewater. PSG's services reach over eight million people
per day. PSG operates and maintains more than 17,000 miles of piping systems
and more than 2,400 pumping stations. PSG manages more than 160,000 dry tons
of biosolids per year, through a number of environmentally sound approaches.
       
  The Company believes that PSG's relative size permits it to provide its
clients with a higher caliber of benefits. PSG operates a large number of
facilities and systems, with more employees, than any other company     
 
                                      72
<PAGE>
 
in the industry. PSG believes that its size allows each client partnership to
take advantage of PSG's collective experiences and best practices. PSG
maintains extensive infrastructure and equipment and provides sophisticated
maintenance practices and programs. As a result, PSG believes that it can
maintain, protect and preserve its clients' large investments in facilities
and equipment in a highly competitive manner. In addition, PSG believes that
through its process control expertise, developed through the hands-on
operation of many complex facilities, PSG can make the cutting edge of
innovation and technology immediately available to all of its clients'
treatment facilities.
 
  In addition, PSG believes that its relationship with CGE further
differentiates it from competitors. PSG believes that access to the technical
and financial resources of CGE greatly enhances PSG's competitive position,
financial strength and technical capabilities. With an annual budget of over
$40 million, CGE's research facility is the world's largest private research
institution dedicated exclusively to water and wastewater. Year after year,
CGE strives to develop innovative, cost-efficient technology. PSG believes
that access to CGE's technical expertise is an important benefit to PSG's
clients as they face facility upgrades and expansions. PSG believes that its
clients also benefit from CGE's knowledge and expertise in operating more than
7,000 water and wastewater facilities worldwide. PSG believes that the
experience and support of CGE allows clients to realize further operational
efficiencies and process enhancements.
 
                                      73
<PAGE>
 
                                   
                                Figure 1.1     
   
[Figure 1.1 is a map of the United States that depicts the location and
geographic dispersion of PSG Projects throughout the continental United
States, Hawaii and Puerto Rico, with an inset map depicting the concentration
in the Northeast.]     
   
  Figure 1.1 depicts the location and geographic dispersion of PSG Projects
throughout the continental United States, Hawaii and Puerto Rico. The inset
depicts the concentration of PSG Projects in the Northeast.     
 
                                      74
<PAGE>
 
  WATER SUPPLY AND WASTEWATER TREATMENT SERVICES
 
  PSG provides operation, maintenance and management services for water supply
and wastewater treatment systems, primarily for cities, municipalities and
other local governmental entities. PSG also serves the industrial market and
federal and state governments by providing OM&M services for wastewater
treatment systems and groundwater remediation treatment systems. Typically,
under each of PSG's contracts, the client owns the water supply or wastewater
treatment facilities and subcontracts to PSG, for a fixed annual fee, the
provision of staff, supervision, and management for the operation, maintenance
and management of the facilities. In addition, as contract operator, PSG is
responsible for the efficient operation and maintenance of the facilities, for
maintaining compliance with federal, state and local regulations, and for
fulfilling all relevant reporting requirements with respect to the facilities.
 
  In addition to being a service provider under short-term OM&M contracts, PSG
is among a few firms pioneering alternative forms of public/private
partnerships, or PPPs, such as long-term OM&M contracts. See "--The
Water/Wastewater Privatization Market."
 
  The water and wastewater privatization market is estimated to be, on an
annual basis, a $1.1 billion market. The top seven companies total about $600
million in revenues or 55% of the total market. Among the top seven companies,
PSG has a 45% share of that market segment. Overall, PSG commands a 25% market
share of the total $1.1 billion market.
   
  Examples of water treatment facilities which PSG operates include Newark, New
Jersey; Brockton, Massachusetts; and Alamogordo, New Mexico. PSG's wastewater
treatment facility contracts include New Orleans, Louisiana; Oklahoma City,
Oklahoma; Cranston, Rhode Island; West Haven, Connecticut; and Kenner,
Louisiana. In addition, PSG operates and manages the water and wastewater
systems for the Commonwealth of Puerto Rico. PSG's PRASA contract is one of the
largest OM&M contracts in the world. The facilities managed by PSG in Puerto
Rico include 69 wastewater plants (capacity 304 mgd), 128 water treatment
plants (capacity 318 mgd), and related collection and distribution systems and
pumping stations.     
 
  SLUDGE AND BIOSOLID WASTE MANAGEMENT SERVICES
   
  PSG has experience dealing with the planning and implementation of large
biosolids management programs. Compared to other OM&M firms, PSG is among the
leaders in large, complex biosolids plant operation and management experience.
PSG manages more than 16,000 dry tons of biosolids per year, through a number
of environmentally sound approaches. Methods used by PSG include landfilling,
land application, composting and incineration. PSG also has significant
experience in operating and managing composting facilities.     
 
  PUBLIC WORKS
 
  PSG provides a full range of public works services under contract to small
towns, villages and municipalities, including meter reading, sanitation
services, street maintenance, customer billing and parks and grounds
maintenance. These services are typically provided by PSG under OM&M contracts
with a municipality's public works department for a fixed annual fee. These
contracts typically result in lower cost and reduced administrative burdens for
a municipality's personnel. PSG maintains such contracts with the following
municipalities: Moore, Oklahoma; Mustang, Oklahoma; and Pikeville, Kentucky.
 
  COMPOSTING
 
  PSG has experience in operating and maintaining composting facilities and
effectively controlling and reducing offensive odors. Solid waste composting,
along with recycling and source reduction, is utilized by local governments as
a means of reducing landfills. In a composting facility, the non-decomposable
waste is removed, and the organic waste is shredded and then efficiently broken
down by naturally occurring micro-organisms in the composting process, in which
moisture content, aeration and temperature of the organic waste is controlled
so as to accelerate the biological decomposition. Through further processing,
composting produces a fine humus-
 
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like soil product which is sold or otherwise disposed of as a soil fertilizer
or mulch. In Baltimore, Maryland, PSG currently operates one of the largest
facilities that transforms municipal wastewater sludge into a usable compost
product. PSG operates other composting facilities at Schenectady, New York;
Bristol, Tennessee; and Hickory, North Carolina. PSG's management believes
that composting is a viable market and has positioned PSG to increase its
business in this market segment.
 
METCALF & EDDY--WATER AND WASTEWATER TREATMENT/HAZARDOUS WASTE REMEDIATION
 
  OVERVIEW
 
  Metcalf & Eddy provides a comprehensive range of environmental services to
clients in industry and government, aimed principally at the protection of
public health and the environment in a cost-effective manner, including
planning, engineering, design and construction management, as well as on-site
and off-site remediation of environmental contamination. Metcalf & Eddy's
clients are faced with projects involving the protection, treatment and
distribution of drinking water; the collection, treatment and disposal of
wastewater and by-products such as sludge; the treatment and disposal of
hazardous wastes; and the management of solid waste.
 
  Metcalf & Eddy receives support from CGE in the development and application
of new and innovative technologies worldwide. As the world's largest water
company, CGE invests over $40 million annually in the development of new
technologies for water and wastewater treatment.
 
  SERVICES AND TECHNOLOGIES
 
  To address water pollution problems, Metcalf & Eddy provides a full spectrum
of services focusing on design, construction, management and operation of
complex biological, chemical and physical treatment technologies, as well as
waste minimization and alternative disposal techniques; analyzes and assesses
complex aquatic and other environments; and prepares specifications and
designs for treatment systems. Metcalf & Eddy prepares permit and license
applications, manages construction and field installation of treatment
facilities, and provides startup, corrective action and rehabilitation
services for those facilities. Metcalf & Eddy also develops operations and
maintenance manuals for facilities and develops scheduling and maintenance
procedures to ensure their efficient operation. Metcalf & Eddy also provides
its clients with the expertise to address institutional, financial and public
policy challenges which often arise in the development and implementation of
environmental projects.
 
  WATER SUPPLY AND WASTEWATER TREATMENT SERVICES
 
  Since 1907, Metcalf & Eddy has conducted extensive hydrologic and geologic
evaluations of hundreds of surface and groundwater supplies for governmental
and industrial clients in the United States and abroad. Metcalf & Eddy has
expertise in analyzing the nature of water resource problems, both in terms of
available capacities and the quality of the sources, and in developing and
evaluating different types of cost-effective treatment technologies. Metcalf &
Eddy's experience includes the design of over fifty water treatment
facilities, using technologies ranging from simple extraction and distribution
of water to more complex technologies such as ozonation, carbon absorption,
air stripping, desalinization, biologically active carbon ("BAC") and membrane
filtration. Metcalf & Eddy has also evaluated and investigated over 250 dams,
conducted groundwater contamination studies at over thirty sites and conducted
computerized analyses on over 100 water distribution systems. In water system
computer modeling, Metcalf & Eddy's expertise includes water system hydraulic
and quality aspects and treatment process optimization.
 
  Metcalf & Eddy is a partner in the development of water treatment for New
York City. Over the past year, Metcalf & Eddy, with its partners, has been
conducting piloting for water treatment processes for New York City's Croton
supply and is currently assisting the City with the process selection, which
the Metcalf & Eddy team has been contracted to design.
 
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<PAGE>
 
  In the wastewater treatment market, Metcalf & Eddy has conducted evaluations
of a broad range of effluents discharged from municipalities and industries,
including petrochemical, petroleum, chemical, pulp and paper, electroplating,
textile, ferrous and non-ferrous industries. Metcalf & Eddy has also conducted
numerous studies of controlled and uncontrolled discharges entering on-site and
off-site treatment facilities, lagoons and other bodies of water. Among the
traditional and innovative solutions Metcalf & Eddy has developed for its
clients are various biological, chemical and physical treatment technologies,
including activated sludge, trickling filters, nutrient removal, constructed
wetlands and land application. In conjunction with CGE, Metcalf & Eddy has
established a research center in the United States for the development of
technologies for water reuse. Metcalf & Eddy has designed over 200 wastewater
treatment plants, including some of the largest facilities in the United
States, utilizing these technologies. A major market for Metcalf & Eddy's
services is the upgrade of treatment facilities that were built under the
Federal Construction Grants Program during the 1970s.
 
  Since August 1988, Metcalf & Eddy has played a vital role in one of the
premier wastewater treatment projects in the world, serving as lead design
engineer for the Massachusetts Water Resources Authority's ("MWRA's") Boston
Harbor Project. Under this contract, Metcalf & Eddy has had primary
responsibility for directing the design of the entire primary and secondary
treatment facilities, including a five-mile inter-island tunnel and a nine and
one half mile outfall tunnel/diffuser system. Work on the court-ordered project
included development of the conceptual design for the entire wastewater
treatment system, preparation of a project Design Manual, including standard
specifications, development of the MWRA's CADD system, and management of all
project design engineers providing final design services. As lead engineer,
Metcalf & Eddy has also conducted a number of special investigations, including
an air quality/odor control pilot study, a hydroelectric feasibility study, a
stacked clarifier hydraulic model, a disinfection study, various hydraulic
models of the outfall/diffuser system, and a project-wide geotechnical
exploration program. During the ongoing construction phase, lead engineer
services include coordinating interaction among all construction packages,
plant-wide technical submittal review an instrumentation and control systems.
 
  Metcalf & Eddy also provided, as project design engineer, the final design
services and engineering services during construction for the entire primary
treatment portion, a major part of the secondary treatment portion and
miscellaneous support facilities at the plant. Under a separate contract
awarded in 1993, Metcalf & Eddy has provided training to MWRA management staff
and the tools they need to train plant operations and maintenance staff on an
ongoing basis. The long-term training contract has been considered a critical
element to MWRA's ability to operate and maintain the new facility, and to
protect the $3.4 billion investment of public funds in the project. Major
portions of the plant, including the new primary treatment facilities, are now
on-line. In August 1997, MWRA celebrated the successful start-up of the first
portion of the secondary treatment facilities and the revitalization of a
critical natural resource.
 
  Under a separate contract with the MWRA, Metcalf & Eddy completed a master
plan and combined sewer overflow ("CSO") facilities plan. Four communities
served by MWRA, including the City of Boston, were faced with controlling
pollution from over 80 overflow points into Boston Harbor and its tributary
rivers from a sewer system which combines stormwater and sewage. In one of the
largest CSO studies ever undertaken, Metcalf & Eddy provided a comprehensive
investigation of the MWRA's collection system and developed a plan which
reduced the estimated cost of a CSO control project from $1.3 billion to $370
million, while achieving the client's goal of protecting beaches, shellfish
beds and other critical resources. The project included water quality
monitoring, strategic system planning, monitoring CSOs and interceptors, and
developing CSO management solutions with the input of multiple stakeholders.
The Metcalf & Eddy plan was awarded the 1995 American Academy of Engineers
grand prize, and is used as a national model for comprehensive, watershed-based
solutions for complex wet weather pollution control challenges. Presently,
Metcalf & Eddy is conducting detailed design of major parts of the plan, and
will continue to assist the MWRA with its implementation.
 
  Metcalf & Eddy is routinely asked to provide hands-on assistance to numerous
water and wastewater treatment facilities in such operational areas as
maintaining and servicing equipment, mechanical and instrumentation process
control, troubleshooting, training of staff, and facility rehabilitation and
upgrading. One of the most important areas of this assistance is in the
optimization of plant and system operation to maximize the effectiveness at
minimum cost.
 
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<PAGE>
 
  HAZARDOUS WASTE MANAGEMENT AND REMEDIATION SERVICES
 
  Metcalf & Eddy provides a full range of services for the identification,
characterization, evaluation, design and implementation of cleanup measures for
soil and groundwater contaminated with hazardous and toxic waste. Diagnostic
services include geophysical surveys, surface and subsurface sampling,
hydroelectrical investigations, analytical laboratory services and underground
storage tank testing. To evaluate and design remedial measures, Metcalf & Eddy
performs feasibility studies, public health and ecological risk assessments,
pilot and bench scale treatability studies and groundwater modeling. Metcalf &
Eddy applies a broad range of proven and innovative technologies for soil and
groundwater cleanup, including soil venting, bioremediation, air stripping,
heavy metals precipitation, activated carbon absorption, UV-oxidation and ion
exchange.
 
  Metcalf & Eddy has been awarded several contracts with the Department of
Defense for investigation and remediation of site contamination problems at
military installations under the Base Realignment and Closure ("BRAC") program,
at active installations and formerly-used defense sites under the Defense
Environmental Restoration Program, and at Superfund sites administered by the
Army Corps of Engineers for the EPA. Turnkey design, construct and operate
contracts are currently held with the Army Corps of Engineers for groundwater
cleanup projects. Contracts covering a wide range of hazardous and toxic
investigation and design services are or were recently held with the Army Corps
of Engineers in New England; Savannah, Georgia; Louisville, Kentucky and
Mobile, Alabama; with the Army Environmental Center for Total Environmental
Program Support nationwide; and with the Air Force Material Command at Wright
Patterson and Kelly Air Force Bases. Metcalf & Eddy is performing nationwide
contaminated soil and tank removal assignments under contract to the Air Force
Center for Environmental Excellence at Brooks Air Force Base, remediation of
petroleum oils and lubricants under subcontract with the Naval Energy and
Environmental Support Activity at Fort Hueneme, California, and has been
selected for environmental compliance services by both the Naval Facilities
Engineering Command's Southern and Western Divisions and by the Air Force
Mobility Command for a major nationwide subcontract role.
 
  In recent years, Metcalf & Eddy has focused on the in-field remediation
portion of the hazardous waste market. To meet client needs for expedited and
cost-effective cleanup, Metcalf & Eddy has brought several new technologies to
the marketplace, providing its clients with engineered solutions tailored to
their site needs. Technologies introduced by Metcalf & Eddy include HYDRO-
SEP(SM) soil washing system, GEMEP(SP) mercury removal system and NoVOCs(SM)
in-well vapor stripping system. Metcalf & Eddy has taken an active role in the
brownfields redevelopment market, partnering with nationwide real estate
management and development firms.
 
  Metcalf & Eddy is a remediation contractor for the State of Florida, a
remedial investigation and feasibility study contractor for the states of
Massachusetts and Connecticut, and a contractor to the EPA for a full spectrum
of services from investigation to design and implementation of remedial
measures in the six New England states. Metcalf & Eddy was selected by the EPA
for a Response Action Contract ("RAC") covering New England. The maximum value
of this contract is approximately $400 million over a ten-year contract term.
 
  In 1996, Metcalf & Eddy was one of four vendors selected to participate on
projects valued at $190 million to provide remediation, pollution prevention,
and BRAC services over a five-year period at McClellan Air Force Base in
Sacramento, California.
 
  SLUDGE MANAGEMENT SERVICES
 
  Because of Metcalf & Eddy's experience with treatment technologies used for
water supply and wastewater disposal, numerous municipal and industrial clients
have engaged Metcalf & Eddy to assist in the management and disposal of the
sludge generated as a by-product of the treatment process. For these clients,
Metcalf & Eddy develops programs to minimize the generation of sludge, to alter
it to a more environmentally acceptable forms, and to develop and evaluate
alternative processing and disposal technologies such as thickening, anaerobic
digestion, conditioning, dewatering, incineration, composting and land
application. Metcalf & Eddy has assessed sludge handling and disposal
alternatives, designed and assisted in the implementation of treatment
technologies
 
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and operated sludge management facilities. Working with its clients, Metcalf &
Eddy has analyzed and designed innovative technologies and treatment
alternatives for over forty-five sludge management projects and facilities with
over three billion gallons per day of treatment capacity.     
 
  Metcalf & Eddy has designed and is providing construction support and
training services for the San Diego Municipal Biosolids Center ("MBC"). When
completed, the MBC, which represents San Diego's largest-ever infrastructure
program, will be one of the largest, most innovative sludge processing systems
in the United States.
 
  SOLID WASTE MANAGEMENT SERVICES
 
  Metcalf & Eddy has assisted numerous clients in the evaluation of solid waste
management needs including quantification of amounts and type, development of
waste minimization programs and assessment of needed disposal capacity. Metcalf
& Eddy is experienced in planning and implementing alternative technologies and
facilities for solid waste management which include landfills, incinerators,
resource recovery plants and recycling.
 
  Metcalf & Eddy's services for solid waste management facilities include
facility planning, siting and permitting, design, construction management,
operations and maintenance assistance, closure and post-closure programs for
landfills and the collection and treatment of leachate from landfills. Metcalf
& Eddy is also experienced in the installation of monitoring wells and related
sampling and testing procedures for groundwater protection in or about
landfills.
 
  Metcalf & Eddy has been responsible for the final design of nine waste-to-
energy facilities, including a major solid waste resource recovery facility
located in Chicago, Illinois, and has assisted various communities in
activities associated with resource recovery implementation, including
evaluating and monitoring air emission control equipment programs. In addition,
Metcalf & Eddy has designed landfills and ashfills in accordance with
regulatory requirements.
 
  PROGRAM MANAGEMENT SERVICES
 
  Metcalf & Eddy has developed extensive program management capabilities
through its experience in the program planning and development, scheduling,
financial planning, contract administration, procurement, construction
management, control and coordination of large and complex projects. These
capabilities enable Metcalf & Eddy to effectively manage its own projects as
well as to provide program management services to large environmental
development and capital expenditure programs of others.
 
  Metcalf & Eddy has continually expanded its program management expertise and
resources by providing program management services for major national defense
and municipal programs. For example, Metcalf & Eddy has been providing long-
term program management services for the upgrade of one of the largest
wastewater facilities in the United States, the Blue Plains advanced wastewater
treatment plant serving Washington, D.C., and for the drinking water system in
Lawrence, Massachusetts. Under contract to the United States Air Force
Logistics Command for the Peace Shield project, Metcalf & Eddy entered into a
joint venture with CRSS Inc. to provide program management services to deliver
ground based facilities to support a new air defense system for the Royal Saudi
Arabian Air Force. Metcalf & Eddy was primarily responsible for applying its
geotechnical, hydrological and construction management skills to site and build
structures, roads, water and wastewater systems and other infrastructure to
support the complex defense system. The facilities include underground command
and control centers, long range radar sites, a central command center, a
central maintenance facility and communications sites.
 
  DESIGN/BUILD AND DESIGN/BUILD/OPERATE SERVICES
 
  To expedite project delivery and reduce overall program costs, Metcalf & Eddy
offers design/build and, in conjunction with its sister company, PSG,
design/build/operate service packages. The design/build market has grown
tenfold in the last decade and, because of its many advantages, is expected to
be the dominant project delivery method by the year 2000. During 1996 and 1997,
Metcalf & Eddy was awarded several design/build projects in the United States
and overseas, including providing design/build services in connection with
PSG's
 
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design/build/finance/operate project in Freeport, Texas, and providing
design/build services for capital improvements in connection with PSG's
Cranston, Rhode Island lease transaction. The Cranston, Rhode Island project
involves innovative financing and long-term operation by PSG. See "--The
Water/Wastewater Privatization Market."
 
  INTERNATIONAL BUSINESS
 
  Metcalf & Eddy has provided environmental and engineering services to clients
in more than eighty nations, spanning all seven continents. Presently, Metcalf
& Eddy is providing planning, design, program and construction management
services on several large projects in Egypt, Thailand, Singapore, Latin America
and Eastern Europe.
 
  COMPETITION
 
  Metcalf & Eddy's competitors fall into several categories. National
competitors include integrated consulting engineering firms (offering several
different services including consulting, design/build and contract operations),
along with single service consulting firms. Regional firms are also
competitors, although many have been acquired by larger firms. Low-cost
regional providers also compete with Metcalf & Eddy, particularly in the
municipal water and wastewater market. Metcalf & Eddy also competes with
specialty construction management firms, niche players, major A/E firms,
construction and utility companies, investor-owned water utilities, and
integrated companies. Depending on the client's needs, however, Metcalf & Eddy
often teams with firms which might be competitors in other settings.
 
  In the dynamic market for environmental services, Metcalf & Eddy is well
positioned to answer clients' needs for cost-effective delivery of public
service, management of environmental risk, and the development and employment
of innovative technologies. Working with its sister companies and global
partners, Metcalf & Eddy believes that it can offer an array of solutions and
approaches which few competitors can match.
   
DISCONTINUED OPERATION--RESEARCH-COTTRELL--AIR POLLUTION CONTROL     
          
  The Company has marketed air pollution control related products and services
through Research-Cottrell. Research-Cottrell is comprised of six companies: Air
Pollution Control Division (APCD), Custodis, Flex-Kleen, KVB, REECO and Thermal
Transfer Corporation. Research-Cottrell's technologies and services are
directed principally at cost-effectively reducing air pollution, treating
thermal discharges, dispersing airborne contaminants, continuously monitoring
emissions, and providing engineering services for industrial process plants and
power generation in the United States and internationally. Research-Cottrell's
services have included identifying and analyzing air pollution control problems
and recommending effective and cost-efficient control options; designing and
engineering treatment facilities and equipment; procuring, fabricating,
constructing, and installing air pollution control and related equipment; and
providing overall project management. In addition, Research-Cottrell has
participated in the aftermarket services sector.     
       
BUSINESS SEGMENTS AND FOREIGN OPERATIONS
   
  For financial information concerning the Company's operations by industry
segment and the Company's foreign and domestic operations, see "Management's
Discussion and Analysis of Financial Condition and Results of Operations--
Results of Operations" and Note 11 to the Company's Consolidated Financial
Statements, included elsewhere in this Prospectus.     
 
MARKETS AND CUSTOMERS
   
  The Company markets its services and technologies to governmental and
industrial customers throughout the United States, the Caribbean, Canada and
the Pacific Rim. The Company also services customers in Europe, the Middle
East, Central and South America and the Far East. A majority of the Company's
sales are technical in nature and involve senior technical and management
professionals, supported by the Company's marketing groups. The Company uses a
coordinated system of in-house sales representatives and marketing managers,
organized primarily by business segments and markets served. In fiscal 1997,
sales to governmental customers approximated 96% and 83% of the Company's PSG
and Metcalf & Eddy segment sales, respectively.     
 
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<PAGE>
 
   
  Contracts with federal, state, municipal and other governmental agencies
generally may be terminated at any time at the option of the customer. In
fiscal 1997, sales associated with PSG's contract with PRASA accounted for 23%
of the Company's sales for such period and sales to the federal government
approximated 10% of the Company's consolidated sales for such period. The
Company benefits substantially from its long-term relationships with many of
its clients which result in a significant amount of repeat business. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Results of Operations."     
 
  The Company has experienced no difficulty in obtaining raw materials used in
its operations and relies on a broad range of suppliers, the loss of any of
which would not have a material adverse effect on the Company.
 
BACKLOG
   
  At October 31, 1997, the Company's total backlog was approximately $1.1
billion, the same level as at October 31, 1996, and consisted of PSG (78%) and
Metcalf & Eddy (22%). The Company estimates that approximately $330 million of
the backlog represents work which will be completed in the next twelve months.
The total backlog at October 31, 1997 represents work for which the Company has
entered into a signed agreement or purchase order with respect thereto or has
received an order to proceed with work up to a specified dollar amount and
includes approximately $275 million from PSG's contract with PRASA. Backlog
amounts have historically resulted in revenues; however, no assurance can be
given that all amounts included in backlog will ultimately be realized, even if
covered by written contracts or work orders. Most of the Company's long-term
contracts contain escalation provisions designed to protect the Company against
increases in material and unit labor costs. The Company's total backlog
included approximately 95% of work to be performed for federal, state and
municipal governmental agencies as of October 31, 1997.     
 
COMPETITION
   
  The Company faces substantial competition in each market in which it
operates. The Company competes primarily on its engineering, scientific and
technological expertise. To the extent that non-proprietary or conventional
technologies are used, the Company also relies upon its experience and trade
names as a basis for competition. Such trade names include: "Professional
Services Group" and "Metcalf & Eddy" in the water and wastewater treatment and
sludge management markets and "Metcalf & Eddy" in the hazardous waste
remediation market. Many companies, some of which have greater resources than
the Company, participate in the Company's markets and no assurance can be given
that such other companies will not enter its markets. See "--Professional
Services Group--Operation, Maintenance and Management of Treatment Systems--
Water Supply and Wastewater Treatment Services," "--Metcalf & Eddy--Water and
Wastewater Treatment/Hazardous Waste Remediation--Competition" and "Risk
Factors--Highly Competitive Industry."     
 
  Customers for PSG's and Metcalf & Eddy's water and wastewater services are
primarily governmental entities and typically award contracts on the basis of
technical qualifications and price. For PSG's treatment system OM&M contracts,
technical qualification is required; however, price is generally a key
determining factor. Treatment system OM&M agreements are generally for three to
five-year periods, with various renewal options up to five years in duration,
and contain certain escalators for inflation. In addition, recent developments
in the water and wastewater treatment markets may lead to longer-term
contracts. See "--The Water/Wastewater Privatization Market." For Metcalf &
Eddy's design services contracts, the majority of which are cost-plus- fixed-
fee arrangements, technical qualifications are the primary factor followed, by
price competitiveness. In the hazardous waste clean-up market, Metcalf & Eddy
competes with many local, regional and national firms on the basis of
experience, reputation and price.
 
  PSG typically competes for its contracts under a competitive procurement
process. This process can vary, but typically follows one of three methods. The
first method is the issuance of a Request for Qualifications ("RFQ") with a
selection made on qualifications only. Negotiations are held only with the most
qualified company. The second method is a two-step procurement process
consisting of an RFQ followed by a short listing of the most qualified firms.
The short listed firms are then requested to provide a proposal, which includes
a
 
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<PAGE>
 
price proposal, based on a Request For Proposals ("RFP") and a firm is then
selected. The selection can range from a decision based on the lowest price to
a decision based on price and other factors. The third method is a one-step
procurement which is an RFQ/Price Proposal. The selection is usually based on
price and other factors, but low price is sometimes the only deciding factor.
Prospective clients often will hire consultants or advisors to assist in the
procurement and selection process. The entire procurement and selection process
can range from four months to two years, with larger, more complex projects
taking the longer amount of time. When factors other than price are considered
in the final selection, such factors include technical qualifications;
experience and reputation; financial capabilities necessary to ensure delivery
of services; assumption of risk being required for the contract; proposed
operating and employee transition plans; depth of corporate resources; and
other value added considerations.
   
  In competing for municipal work, Metcalf & Eddy most often participates in a
process which involves an RFQ, a short-listing of qualified firms, then an RFP.
In most cases, those firms submitting proposals are asked to make a
presentation to the client selection committee. Due to its extensive
experience, client relationships and reputation in the field, Metcalf & Eddy is
generally short-listed in municipal election processes, and wins approximately
30% of the projects it pursues. In the industrial market, selections are
generally made from a limited, pre-qualified list of consultants, and
competition is based on price. Metcalf & Eddy believes that its strategic
alliance with Betz-Dearborn will enable it to leverage the access of Betz's
2,500 person sales force to aggressively pursue opportunities in the rapidly
growing market for outsourcing of industrial water, wastewater and hazardous
waste management. Federal procurements are conducted in accordance with strict
federal requirements set forth in the Federal Acquisition Regulations ("FAR").
Selections are made on a combination of qualifications and cost criteria, and
there is often competition for assignments among several selected consultants
after the award of a contract.     
          
  There can be no assurance that the Company will be able to compete
successfully with its existing or any new competitors or that competitive
pressures faced by the Company will not materially and adversely affect its
results of operations and financial condition. See "Risk Factors--Highly
Competitive Industry." In addition, while the Company has been successful in
obtaining new contracts and renewing existing contracts, there can be no
assurance that due to competitive pressures the margins achieved from such
contracts will not be decreased. See "Risk Factors--Dependency on Key Projects
and Government Contracts."     
 
REGULATION
 
  Over the past twenty-five years, significant environmental laws at the
federal, state and local level have been enacted in response to public concern
over the environment. Those laws and their implementation through regulation
affect numerous industrial and governmental actions and form a key market
driver for the Company's products and services.
       
       
       
       
       
  The Safe Drinking Water Act of 1974 directs the EPA to set drinking water
standards for the estimated 57,561 community water supply systems in the United
States. In 1996, Congress reauthorized the act through the Safe Drinking Water
Act Amendments of 1996. The amendments will bring substantial changes to the
regulation and financing of water systems. The changes focus on four elements:
 
  .  regulatory improvements, including standards based on better science,
     risk assessment, and prioritization of efforts;
 
  .  new, stronger programs to prevent contamination of drinking water
     sources;
 
  .  expanded information for water system consumers, including specific
     "right-to-know" provisions; and
 
  .  new funding for states and community water systems through a drinking
     water state revolving fund program.
 
  The new regulatory framework provides a more manageable program for community
systems to monitor and treat drinking water supplies than the previous law.
Communities therefore will not be as delayed by uncertainty and will be able to
design and install the technologies and systems needed to achieve regulatory
compliance.
 
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<PAGE>
 
  The amendments maintain the current process and set a schedule for
implementation of two far-reaching proposals the EPA made in 1994. The first
proposal, the disinfectants and disinfection byproducts rule ("D/DBP"),
establishes disinfectant level goals for chlorination and maximum contaminant
level goals for potentially harmful disinfection byproducts, notably
trihalomethanes. The second proposal, the enhanced surface water treatment rule
("ESWTR"), focuses on treatment requirements for waterborne disease-causing
organisms, or pathogens. Final adoption of these rules under the new schedule
will affect the majority of the Company's municipal clients who will need to
study, design, build and operate more sophisticated facilities.
 
  Congress established for the first time a major federal financial assistance
program for community water systems, the drinking water state revolving fund
program. The amendments authorize nearly $9.6 billion through 2003 to be
allotted based on need to states to create low interest loan funds for
installing and upgrading drinking water treatment facilities. Many of the
Company's municipal water clients will be in a position to use these funds for
needed capital improvements.
 
  The Federal Water Pollution Control Act of 1972 (the "Clean Water Act")
established a system of standards, permits and enforcement procedures for the
discharge of pollutants from industrial and municipal wastewater sources. The
law set treatment standards for industries and wastewater treatment plants and
provided federal grants to assist municipalities in complying with the new
standards. According to the EPA's survey of wastewater and sewage treatment
needs, as much as $137 billion will be needed for construction and upgrade of
wastewater treatment facilities by the year 2012. The EPA and/or delegated
state agencies are placing some of these non-complying communities under
enforcement schedules. In cases of non-compliance, the EPA may petition for
court-ordered compliance and penalties. In 1987, the law was amended to phase
out federal grants by 1991 and replace them with state revolving funds, with a
commitment to provide federal money through 1994. It is presently expected that
federal funding will continue to be appropriated for state revolving funds.
 
  Key areas for which regulations have been issued include industrial
wastewater pretreatment, surface water toxics control and sewage sludge
disposal. The Clean Water Act requires pretreatment of industrial wastewater
before discharge into municipal systems and gives the EPA the authority to set
pretreatment limits for direct and indirect industrial discharges. These rules
issued by the EPA will increase the need for facility upgrading and control of
industrial discharges. The revised regulations tighten prohibitions against
discharge of toxic wastes, and subject industries, which discharge into public
sewers, to stringent controls, inspections, monitoring and testing
requirements. The surface water toxics program requires states to identify
waters adversely affected by toxics and propose control strategies. Also under
the Clean Water Act, the EPA published, in February 1993 and amended in
February 1994, a rule setting standards for the use and disposal of sludge when
it is applied to land to condition the soil, is disposed on land by placing it
in surface disposal sites, or is incinerated. Final "Stormwater" regulations
were issued in November 1990 and establish management requirements for
municipalities serving populations over 100,000 and industries within specified
categories.
 
  In 1994, the EPA signed a final regulation that outlines the national
Combined Sewer Overflow ("CSO") policy. CSO systems are a combination of rain
and sanitary sewage in sewer systems. CSOs contain pollutants that are present
in the domestic and industrial wastewaters, as well as those in the urban
stormwater runoff that enters the combined sewer system. The CSO plan impacts
1,100 municipalities, mainly in the Northeast and Midwest. The EPA estimates
the cost associated with improving and upgrading these sewer-stormwater systems
at $41 billion over the next fifteen year period.
 
  The Resource Conservation and Recovery Act of 1976 ("RCRA") provides a
comprehensive scheme for the regulation of generators and transporters of
hazardous waste as well as persons engaged in the treatment, storage and
disposal of hazardous waste. The intent of RCRA is to control hazardous wastes
from the time they are generated by industry until they are disposed of
properly. In addition, RCRA governs the disposal of solid wastes.
 
                                       83
<PAGE>
 
  Under applicable RCRA regulations, generators who generate more than a
certain amount of hazardous waste per month are required to package and label
shipments of hazardous waste in accordance with detailed regulations and to
prepare a manifest identifying the material and stating its destination before
shipment off-site. Every facility that treats, stores or disposes of hazardous
waste must obtain a RCRA permit from the EPA, or a state agency which has been
authorized by the EPA to administer its state program, and must comply with
certain operating, financial responsibility and disclosure requirements. RCRA
also provides for corrective actions to remediate contamination resulting from
the disposal of hazardous waste.
   
  Regulations issued pursuant to RCRA significantly affect the need for
environmental treatment and services in the following areas: municipal solid
waste disposal, land disposal of hazardous waste, remediation of environmental
contamination, and management of underground storage tanks. Regulations
establishing land disposal restrictions for hazardous wastes are being
published in serial form.     
   
  In December 1995 the EPA proposed a new system for exempting high-volume,
low-risk wastes from RCRA hazardous waste management rules. This new rule, part
of the Hazardous Waste Identification Rule ("HWIR"), would establish a risk-
based "floor" for these wastes, encouraging the use of innovative waste
treatment technologies. The EPA is also promoting a program that encourages
RCRA corrective action facilities to meet performance standards through self-
implementing programs. The Company expects that both of these programs will
benefit the Company by hastening the pace of cleanups and encouraging the use
of on-site engineered systems. However, as a result of a settlement with
hazardous waste industry litigants, the EPA is not required to finalize a HWIR
rule for industrial process wastes until April 2001.     
 
  The Comprehensive Environmental Response, Compensation and Liability Act of
1980 ("Superfund") established the Superfund program to clean up hazardous
waste sites and provides for penalties for noncompliance. Superfund has been
interpreted to impose strict, joint and several liability on owners and
operators of facilities, transporters, and persons who arrange for the disposal
or treatment of hazardous substances for the costs of removal and remediation,
other necessary response costs and damages for injury to natural resources.
Where potentially responsible parties cannot be identified, are without
resources or are unresponsive, federal funds may be used. In addition, the
Superfund Amendments and Reauthorization Act of 1986 established more stringent
cleanup standards and accelerated mandatory schedules to ensure rapid and
permanent solutions in cleaning up sites. Superfund was slated for
reauthorization, and possible substantial revision, in 1994, 1995, 1996 and
again in 1997. It will be reconsidered in 1998, although it is unclear whether
reauthorization will occur due to the very controversial issues surrounding
retroactive liability and natural resource damage evaluation.
 
  The exodus of U.S. industry from inner-city or other industrial locations
during the past thirty years has left behind thousands of former manufacturing
and commercial sites, many of which have been abandoned because of
contamination and associated liability to owners and/or operators. These sites,
known as "brownfields", number more than 500,000 nationwide. In 1995, the
Clinton Administration introduced the Brownfields Initiative, which was
designed to encourage inner-city economic development and property reuse by
resolving the cleanup and liability issues associated with contaminated
industrial properties. To date, the EPA and state agencies in 35 states have
initiated targeted efforts under this Initiative. These efforts have included
funding for pilot programs, legislation geared at limiting owner and lender
liability, and relaxed cleanup standards that balance potential environmental
and public health risk with future site use. Brownfields continue to be a high
priority for the Administration and this initiative is being expanded in scope
and funding. The Company is well-positioned to serve the market, which includes
current property owners and potential buyers, through its management and
cleanup capabilities and its long-term relationships with both governmental and
industrial clients.
   
  In addition to federal environmental regulations, most states and many local
authorities have enacted laws regulating activities affecting the environment.
Many of these state and local laws have imposed stricter standards and
regulations than their federal counterparts, and as a result are also an
important market driver for the Company's products and services.     
 
                                       84
<PAGE>
 
BONDING
 
  The Company is often required to procure bid and performance bonds from
surety companies, particularly for clients in the public sector. A bid bond
guarantees that the Company will enter into the contract under consideration at
the price bid and a performance bond guarantees performance of the contract.
The Company is required to indemnify surety companies providing bid and
performance bonds for any payments the sureties are required to make under the
bonds.
   
  The Company and its subsidiaries obtain bid and performance bonds pursuant to
a Master Surety Agreement with USF&G. The Company also has outstanding bid and
performance bonds pursuant to agreements with Reliance Insurance Company,
United Pacific Insurance Company and Planet Insurance Company of Federal Way,
Washington, although no bonds have been obtained under this agreement since
June 27, 1995. In addition, the Company's Bank Credit Facility provides for
issuance of letters of credit for purposes which include direct or indirect
fulfillment of bid and performance bond requirements by the Company and its
subsidiaries. The Company has never forfeited a bid or a performance bond and
no project sponsor has ever called and drawn a bond issued in support of the
Company's contract obligations.     
   
  In August 1997, USF&G notified the Company that it would suspend the renewal
and issuance of new bid and performance bonds as of September 30, 1997, due to
the Company's operating performance and resulting financial condition as
reported at the end of the fiscal quarter ended April 30, 1997, unless it
received indemnification from CGE or Anjou for at least 20% of all future bond
requests including renewals. Anjou has entered into an agreement with USF&G
regarding an arrangement pursuant to which, until terminated at Anjou's
discretion, Anjou will enter into guarantees of certain obligations of the
Company relating to the bonding of certain contracts under the Master Surety
Agreement dated as of October 31, 1995 between USF&G and the Company and its
subsidiaries. Such guarantees would cover, in each instance, 30% of the
aggregate amount of the bonds executed, procured or provided on behalf of the
Company or its subsidiaries on or after October 1, 1997, and certain penalty
amounts, up to $45 million. There can be no assurance that USF&G will be
willing to provide bid bonds to the Company following the Recapitalization
without a guarantee from CGE (or one of its affiliates) and there can be no
assurance that CGE would be willing to provide such a guarantee following the
Recapitalization. See "Risk Factors--USF&G Guarantees by CGE" and "Risk
Factors--Dependency on Key Projects and Government Contracts."     
 
INSURANCE
 
  The Company currently maintains various types of insurance, including
workers' compensation, general and professional liability and property
coverages. The Company believes that it presently maintains adequate insurance
coverages for all of its present operational activities. It has been both a
Company policy and a requirement of many of its clients that the Company
maintain certain types and limits of insurance coverage for the services and
products it offers, provided that such types and limits can be obtained on
commercially reasonable terms. In addition to existing coverages, the Company
has been successful in obtaining commercially reasonable coverage for certain
pollution risks, though coverage has been on a claims made rather than
occurrence basis due to the professional nature of some of the Company's
exposures. Claims made policies provide coverage to the Company only for claims
reported during the policy period. The Company's general liability and other
insurance policies have historically contained absolute pollution exclusions,
brought about in large measure because of the insurance industry's adverse
claims experience with environmental exposures. Accordingly, there can be no
assurance that environmental exposures that may be incurred by the Company and
its subsidiaries will continue to be covered by insurance, or that the limits
currently provided or that may be obtained in the future will be sufficient to
cover such exposures. A successful claim or claims in an amount in excess of
the Company's insurance coverage or for which there is no coverage could have a
material adverse effect on the Company.
 
                                       85
<PAGE>
 
PROPERTIES
   
  The Company believes that its facilities are suitable and adequate for its
current and foreseeable operational and administrative needs. At October 31,
1997 the principal physical properties of the Company were as follows:     
 
<TABLE>   
<CAPTION>
                                                   APPROXIMATE    APPROXIMATE
                                                  SQUARE FOOTAGE SQUARE FOOTAGE   LEASE
LOCATION                         FUNCTION             OWNED          LEASED     EXPIRATION
- --------                         --------         -------------- -------------- ----------
<S>                      <C>                      <C>            <C>            <C>
Branchburg, NJ.......... Corporate Office/Metcalf   89,466 on           --          --
                         & Eddy Office and           46 acres
                         Research-Cottrell Office
Wakefield, MA........... Metcalf & Eddy Office            --        139,687        2005
Palo Alto, CA........... Metcalf & Eddy Office            --         17,672        2005
Miramar, FL............. Metcalf & Eddy Office            --         13,936        2005
Chicago, IL............. Metcalf & Eddy Office            --          7,030        2002
Itasca, IL.............. Research-Cottrell Office         --         13,759        2002
Houston, TX............. PSG Corporate Office             --         22,706        2003
Honolulu, HI............ Metcalf & Eddy Office            --         15,833        2003
Santa Barbara, CA....... Metcalf & Eddy Office            --          4,328        2000
New York, NY............ Metcalf & Eddy Office            --         10,413        2004
Columbus, OH............ Metcalf & Eddy Office            --         22,515        2004
Irvine, CA.............. Research-Cottrell                --         80,561        1999
                         Office & Manufacturing
Atlanta, GA............. Metcalf & Eddy Office            --         11,051        2004
San Diego, CA........... Metcalf & Eddy Office            --         12,978        2002
</TABLE>    
 
  In addition, the Company leases or owns space in approximately 50 other
domestic locations and 17 locations in Canada, Europe and the Middle East. The
Company has no current plans or requirements for additional space. Also, the
Company operates and provides services from approximately 115 treatment
facilities, two of which it owns.
 
EMPLOYEES
   
  At October 31, 1997, the Company had approximately 2,900 full-time employees,
of which approximately 1,600 are employed in PSG, 900 are employed in Metcalf &
Eddy and 400 are employed in Research-Cottrell.     
 
LEGAL PROCEEDINGS
   
  In connection with a broad investigation by the U.S. Department of Justice
into alleged illegal payments by various persons to members of the Houston City
Council, the Company's subsidiary, PSG, received a federal grand jury subpoena
on May 31, 1996 requesting documents regarding certain PSG consultants and
representatives that had been retained by PSG to assist it in advising the City
of Houston regarding the benefits that could result from the privatization of
Houston's water and wastewater systems. PSG has cooperated and continues to
cooperate with the Department of Justice which has informed the Company that it
is reviewing transactions among PSG and its consultants. The Company promptly
initiated its own independent investigation into these matters and placed PSG's
then Chief Executive Officer, on administrative leave of absence with pay. The
former PSG Chief Executive Officer, who has denied any wrongdoing, resigned
from PSG on December 4, 1996. In the course of its ongoing investigation, the
Company became aware of questionable financial transactions with third parties
and payments to certain PSG consultants and other individuals, the nature of
which requires further investigation. The Company has brought these matters to
the attention of the Department of Justice and continues to cooperate fully
with its investigation. No charges of wrongdoing have been brought     
 
                                       86
<PAGE>
 
   
against PSG or any PSG executive or employee by any grand jury or other
government authority. However, since the government's investigation is still
underway and is conducted largely in secret, no assurance can be given as to
whether the government authorities will ultimately determine to bring charges
or assert claims resulting from this investigation that could implicate or
reflect adversely upon or otherwise have a material adverse effect on the
financial position or results of operations of PSG or the Company taken as a
whole.     
   
  The City of Bremerton, Washington brought a contribution action against M&E
Services, the operator of a city-owned wastewater treatment plant from 1987
until late 1995. The contribution action arises from two prior lawsuits against
the City for alleged odor nuisances brought by two groups of homeowners
neighboring the plant. In the first homeowners' suit, the City paid $4.3
million in cash and approximately $5 million for odor control technology to
settle the case. M&E Services understands the odor control measures generally
have been successful and the odors have been reduced as a result. M&E Services
was not a party to the first homeowners' suit, which has been dismissed with
prejudice as to all parties. In the settlement of the second homeowners' case,
the City of Bremerton paid the homeowners $2.9 million, and M&E Services
contributed $0.6 million to the settlement without admitting liability. All
claims raised by the homeowners in the second suit (except for two recalcitrant
homeowners) were resolved. All claims by and between M&E Services and the City
in the second homeowner's suit were expressly reserved and will be tried after
the City's contribution action, which is currently scheduled for trial in March
1998. The City is seeking to recover the amounts it expended on the two
settlements, damages for M&E Services' alleged substandard operation of the
plant, and attorneys' fees. M&E Services denies any liability to the City and
believes it has meritorious defenses to the claim. However, no assurances can
be given that an adverse judgment would not have a material adverse effect on
the financial position or results of operations of M&E Services or the Company
taken as a whole.     
   
  On October 14, 1997, Research-Cottrell and R-C Belgium were named in a
lawsuit by Seghers filed in the Commercial Court in Mechelen, Belgium. Seghers
is R-C Belgium's joint venture partner on two large pollution control projects.
The suit claims damages of approximately $13 million allegedly resulting from
R-C Belgium's breach of contract and substandard performance. Damages claimed
in the lawsuit consist not only of Seghers' alleged cost to repair the R-C
Belgium equipment, but also lost profits, damages to business reputation, theft
of employees (R-C Belgium hired two former Seghers' employees), increased costs
arising out of the failure to gain timely acceptance of the two plants,
excessive payments to R-C Belgium due to alleged unfair pricing practices by R-
C Belgium and other miscellaneous interest charges and costs. The initial
response to the suit is due January 20, 1998. The case involves complex
technical and legal issues and is in its earliest stages. Nevertheless, the
Company denies liability to Seghers and, based upon the information currently
available, believes Seghers' claimed damages are grossly inflated. In addition,
the Company believes it has meritorious counterclaims based upon Seghers'
breaches of contract and poor performance.     
 
 
  The Company and its subsidiaries are parties to various other legal actions
arising in the normal course of their businesses, some of which involve claims
for substantial sums. Moreover, as a general matter, providers of services
similar to those provided by the Company may be subject to lawsuits alleging
negligence or other similar claims and environmental liabilities, which may
involve claims for substantial damages. Damages assessed in connection with,
and the costs of defending any such actions could be substantial. The Company's
management believes that the levels of coverage are adequate to cover currently
estimated exposures. Although the Company believes that it will be able to
obtain adequate insurance coverage in the future at acceptable costs, there can
be no assurance that the Company will be able to obtain such coverage or will
be able to do so at an acceptable cost or that the Company will not incur
significant liabilities in excess of policy limits.
 
                                       87
<PAGE>
 
                                  MANAGEMENT
   
  Set forth below are the names, ages and principal occupations of the
directors and executive officers of the Company as of October 31, 1997:     
 
<TABLE>   
<CAPTION>
NAME                          AGE                           POSITION
- ----                          ---                           --------
<S>                           <C> <C>
William Kriegel.............   52 Chairman of the Board of Directors
Thierry Mallet..............   37 President, Chief Executive Officer and Director
Alain Brunais...............   49 Senior Vice President, Chief Financial Officer and Director
Douglas A. Satzger..........   46 Senior Vice President, General Counsel and Secretary
Joseph R. Vidal.............   50 Treasurer
Gail M. Fulwider............   49 Vice President of Human Resources
Robert S. Volland...........   56 Vice President and Chief Administrative Officer
Jekabs P. Vittands..........   61 Senior Vice President and President, Metcalf & Eddy, Inc.
George C. Mammola...........   57 Senior Vice President and President, Research-Cottrell, Inc.
Patrick L. McMahon..........   49 Senior Vice President and President, Professional Services
                                  Group, Inc.
Jean-Claude Banon...........   49 Director
Daniel Caille...............   46 Director
Carol Lynn Green............   51 Director
John W. Morris..............   76 Director
</TABLE>    
 
  Mr. Kriegel was elected Chairman of the Board in October 1997 and has served
as a director of the Company since June 14, 1994. Mr. Kriegel has served as
Chairman of the Board, President, Chief Executive Officer and a Director of
Sithe Energies, Inc. and all of its subsidiaries since 1981. Prior to coming
to the United States in 1984, Mr. Kriegel co-founded an unaffiliated French
energy company that within three years of its formation in 1980 became
France's largest privately-owned company engaged in the development of small
hydro-electric projects. Since December 1996, Mr. Kriegel has served as
Chairman of the Board and Chief Executive Officer of Anjou, the United States
holding company subsidiary of CGE. In this capacity, Mr. Kriegel is the
representative of CGE in the United States. Mr. Kriegel has been designated by
CGE as a director of the Company under the Investment Agreement.
   
  Mr. Mallet was appointed President and Chief Executive Officer of the
Company on October 24, 1997 and a director of the Company on October 26, 1997.
Prior to joining the Company, Mr. Mallet served from 1995 as "Consejo
Delegado" (President and CEO) of Sociedad Mediterranea de Aguas ("SMA") which
manages the water and wastewater business of CGE in Spain. Prior to SMA, Mr.
Mallet was Charge de Mission to the General Management of CGE in Paris. Mr.
Mallet has been designated by CGE as President, Chief Executive Officer and a
director of the Company under the Investment Agreement.     
   
  Mr. Brunais was elected Vice President and Chief Financial Officer of the
Company in September 1994, a director in November 1996 and Senior Vice
President in May 1997. Prior to joining the Company, Mr. Brunais was
responsible since 1990 for foreign investment, primarily in the United
Kingdom, under the direction of the Finance Director of CGE. From 1983 to 1989
he was responsible for corporate development for Ciments Francais in the U.S.
and Canada. Prior thereto, Mr. Brunais organized a sales and services network
for Aerospatiale General Aviation line of aircraft in Europe, Africa and North
America. Mr. Brunais has been designated by CGE as Chief Financial Officer and
a director of the Company under the Investment Agreement.     
 
                                      88
<PAGE>
 
  Mr. Satzger joined the Company in June 1991 as Deputy General Counsel. He
was elected Senior Vice President, General Counsel and Secretary in July 1993.
Prior to joining the Company, Mr. Satzger was a partner in the law firm
Richards & O'Neil, New York, New York, from April 1985 to June 1991.
 
  Mr. Vidal was elected Treasurer of the Company in January 1995. Prior to
joining the Company, Mr. Vidal had broad experience in both international and
domestic treasury operations, most recently with American Cyanamid Company
from 1982 to 1995 and prior thereto with Bristol-Myers Squibb. Mr. Vidal has
also had experience as a controller and auditor and began his professional
career with the accounting firm of Arthur Andersen LLP.
   
  Ms. Fulwider joined the Company in March 1997 as Vice President of Human
Resources. Prior to joining the Company, Ms. Fulwider was Vice President of
Human Resources at Smith Technologies Corporation from February 1995 until she
joined the Company. Prior to that, Ms. Fulwider served as Vice President of
Human Resources at International Technology Corporation, where she worked for
13 years in a wide variety of human resources management positions.     
   
  Mr. Volland was elected Vice President and Chief Administrative Officer of
the Company in June 1994 with oversight responsibility for real estate,
facilities management, procurement, and insurance and management information
systems. Mr. Volland has over 25 years of experience in finance,
administration, asset management, cost control and organizational
efficiencies. From 1973 to 1986, Mr. Volland served as Vice President and
Treasurer for Commercial Credit Company. From 1986 to 1993 he served as Vice
President and Treasurer, and Vice President, Corporate Assets, for Primerica
Corp. Prior thereto, he was Senior Vice President of Real Estate for Paine
Webber.     
 
  Mr. Vittands was elected President of Metcalf & Eddy in February 1997 and
Senior Vice President of the Company in May 1997. Prior to being named
President, he was the branch manager of Metcalf & Eddy's Northeast Region. Mr.
Vittands joined Metcalf & Eddy in 1963, and has served in numerous capacities
since then, including as client principal for the Massachusetts Water Resource
Authority with responsibility for the Boston Harbor Project and for
Washington, D.C., among others.
 
  Mr. Mammola has been the President of Research-Cottrell since December 1994
and was elected Senior Vice President of the Company in May 1997. From 1992 to
1994, he served in various senior management positions for Research-Cottrell.
From 1989 to 1992 he served as Executive Vice President and General Manager of
REECO. Prior to joining REECO, Mr. Mammola served as Executive Vice President
of PPS Inc., an industrial distributor of fluid and air handling systems.
Prior to this, he served in various positions for Interpace Corporation, a
manufacturer and provider of products and services domestically and
internationally to the water and wastewater and utility industries.
 
  Mr. McMahon joined PSG in May 1995 as Senior Vice President and Chief
Operating Officer. He served as President and CEO on an interim basis from
August 1996 to December 1996, when he was named President of PSG by the
Company. He was elected Senior Vice President of the Company in May 1997.
During the nine-month period immediately prior to joining PSG, Mr. McMahon
served as Vice President of National Accounts at International Technology
Corporation. Before joining PSG, Mr. McMahon spent 23 years in a number of
management positions at Brown & Root, Inc., where his responsibilities
included strategic planning, international business development and
operations.
   
  Mr. Banon was elected as a director of the Company on October 9, 1997. Since
1989, Mr. Banon has been Managing Director of General Utilities PLC, the
holding company for CGE's investments in the water industry in the United
Kingdom, and since 1992 he has been Managing Director of General Utilities
Holdings Ltd., the holding company for all CGE activities in the United
Kingdom. In this capacity, Mr. Banon is the representative of CGE in the
United Kingdom. Prior to 1989, Mr. Banon was General Management Delegate
responsible for overseeing the development of CGE's business in the United
States. Mr. Banon has been designated by CGE as a director of the Company
under the Investment Agreement.     
 
                                      89
<PAGE>
 
   
  Mr. Caille was elected as a director of the Company on May 29, 1997. Mr.
Caille presently serves as the Chief Executive of CGE's worldwide water
business which has annual revenues in excess of $7 billion. Previously, Mr.
Caille served as Chairman of the Board of Compagnie Generale de Sante, CGE's
health care subsidiary, which he founded in 1987. Mr. Caille joined CGE in
1982 as director of research and development and created Anjou Recherche,
CGE's center for research and development related to its water and wastewater
activities, and he served as Director of Anjou Recherche from 1982 to 1990.
Mr. Caille has been designated by CGE as a director of the Company under the
Investment Agreement.     
   
  Ms. Green was elected as a director of the Company on June 14, 1994. Ms.
Green is a Partner in the Washington, D.C. law office of Bryan, Cave LLP where
she has practiced environmental law since 1986. Prior thereto, Ms. Green
served at the United States Department of Justice from 1980 to 1986 as the
first Assistant Chief of the Environmental Enforcement Section. At the Justice
Department, Ms. Green was liaison with the EPA on Clean Water Act enforcement
and worked with the EPA in developing the first Superfund settlement policy
and designing some of the early Superfund generator settlements. She currently
serves on the National Environmental Policy Institute's panel to reinvent the
EPA's enforcement and compliance programs.     
   
  Lieutenant General Morris became director of the Company in June 1992. From
1988 to October 1992, Lieutenant General Morris served as a director of
Metcalf & Eddy Companies Inc. Lieutenant General Morris has been President of
J.W. Morris Ltd., an engineering consulting firm, for more than five years. In
addition, he presently serves as President of the National Waterways
Foundation, Chairman of the Water Resources Congress and Chairman of the
Environmental Effects Committee of the U.S. Committee on Large Dams. From 1986
to 1987 he served as President and Chairman of the Engineering Group of
Planning Research Corporations. Lieutenant General Morris served as the Chief
of Engineers, U.S. Army Corps of Engineers, from 1976 to 1980.     
 
BOARD OF DIRECTORS AND COMMITTEES
 
  General. Directors are elected annually and executive officers hold office
for such terms as may be determined by the Board of Directors.
   
  Board Meetings. During the Company's fiscal year ended October 31, 1997, the
Board of Directors of the Company held a total of thirteen meetings. During
the fiscal year ended October 31, 1997, each director attended at least 75% of
the aggregate number of meetings of the Board of Directors and committees on
which he or she served during the period he or she served on the Board of
Directors.     
 
  Committees of the Board. The Board of Directors of the Company has an Audit
Committee and a Compensation and Stock Option Committee, and, in connection
with the Recapitalization, has established a Business Planning Committee.
   
  The Audit Committee of the Board of Directors met three times during the
fiscal year ended October 31, 1997. Ms. Green and Lieutenant General Morris
currently serve as members of the Audit Committee, which reviews the
engagement of the Company's independent auditors, reviews annual financial
statements, considers matters relating to accounting policy and internal
controls and reviews the scope of annual audits.     
   
  The Compensation and Stock Option Committee of the Board of Directors met
three times during the fiscal year ended October 31, 1997. Lieutenant General
Morris, Ms. Green and Mr. Banon are currently members of the Compensation and
Stock Option Committee, which reviews, approves and makes recommendations on
the Company's compensation policies, practices and procedures to ensure that
legal and fiduciary responsibilities of the Board of Directors are carried out
and that such policies, practices and procedures contribute to the success of
the Company. The Compensation and Stock Option Committee also administers the
Company's 1989 Long-Term Incentive Compensation Plan ("Long-Term Incentive
Plan").     
 
  The Company does not have a standing Nominating Committee.
   
  In a special meeting of the Board of Directors of the Company on June 23,
1997, the Board of Directors decided, in anticipation of entering into
discussions with CGE and in accordance with the Investment Agreement, that Ms.
Carol Lynn Green and Lieutenant General John W. Morris, the Company's
directors not affiliated with CGE, would be appointed as the Special Committee
to consider any recapitalization proposal by CGE. See "The Recapitalization--
Background."     
 
                                      90
<PAGE>
 
   
  In connection with the Recapitalization, the Company has established a
Business Planning Committee to review the business strategies prepared by
senior management and, as appropriate, make recommendations on the formulation
and implementation of those strategies that have as their objective increasing
stockholder value. The Business Planning Committee, which will remain in place
through the end of fiscal year 1999, is comprised of three CGE appointed
directors and two directors who are unaffiliated with and independent of CGE.
Among other things, the Business Planning Committee will identify areas where
CGE's management expertise and the Company's business may be effectively
integrated. The Chairman of the Business Planning Committee is currently
Daniel Caille, the Chief Executive of CGE's worldwide water business.     
 
COMPENSATION OF DIRECTORS
 
  Directors who are not employees of the Company or any of its affiliated
companies receive an annual fee of $18,000 for service on the Board of
Directors and an additional $7,500 per annum for service on each Committee
thereof. In addition, directors are reimbursed for out-of-pocket expenses of
attending Board and Committee meetings.
 
  Each Special Committee member is entitled to receive a flat fee of $50,000
for his or her service on the Special Committee and its work through October
1, 1997 and is entitled to reimbursement for reasonable expenses. The Company
and the Special Committee have not reached any agreement with respect to
compensation for Special Committee work performed or to be performed after
October 1, 1997.
 
  In addition, pursuant to the Long-Term Incentive Plan, on July 31 of each
year each director who is a member of the Compensation and Stock Option
Committee with responsibility for administering such Plan as of such date is
granted a non-qualified option to purchase either (i) 3,000 shares of Class A
Common Stock, if the director has served less than one year on the Committee,
or (ii) 500 shares of Class A Common Stock, if the director has served one
year or more on the Committee. The options granted vest annually in four equal
installments commencing one year from the date of grant with exercise prices
equal to the fair market value of the Class A Common Stock on the grant date.
The Long-Term Incentive Plan provides that, upon a "change-in-control" of the
Company (as determined by the Board of Directors), any outstanding options not
theretofore fully exercisable shall immediately become exercisable in their
entirety.
 
                                      91
<PAGE>
 
EXECUTIVE COMPENSATION
   
  The following table shows, for the fiscal years ended October 31, 1997, 1996
and 1995, the cash compensation paid by the Company, as well as certain other
compensation paid or accrued for those years, to the Chief Executive Officer
of the Company and each of the four most highly compensated executive officers
of the Company other than the Chief Executive Officer in all capacities in
which they served. Messrs. Houdaille and Sheh each ceased to be an executive
officer of the Company as of November 1996 and October 1997, respectively.
    
                          SUMMARY COMPENSATION TABLE
 
<TABLE>   
<CAPTION>
                                                          LONG-TERM COMPENSATION
                                  ANNUAL COMPENSATION             AWARDS
                                  ---------------------- ------------------------
                                                          RESTRICTED  SECURITIES     ALL OTHER
                                                            STOCK     UNDERLYING    COMPENSATION
 NAME AND PRINCIPAL POSITION YEAR SALARY ($)   BONUS ($) AWARD(S) ($) OPTIONS (#)       ($)
 --------------------------- ---- ----------   --------- ------------ -----------   ------------
<S>                          <C>  <C>          <C>       <C>          <C>           <C>
Alain Houdaille (1)*...      1996  106,121      195,000        0             0         45,840(2)
 President and Chief
 Executive Officer
Robert B. Sheh (3)*....      1997  407,697            0        0        50,000(4)     100,136(5)
 Chairman of the Board
 of
 Directors and Chief
 Executive Officer
Thierry M. Mallet (6)..      1997  300,000            0        0             0              0
 President, Chief
 Executive Officer and
 Director
Alain Brunais..........      1997  209,810            0        0             0         75,788(7)
 Senior Vice President,      1996  207,450       75,000        0        18,000(8)      77,000(9)
 Chief Financial             1995  203,674       85,000        0             0         74,000(10)
 Officer and Director
George C. Mammola......      1997  216,229            0        0             0         15,000(11)
 Senior Vice President       1996  213,996       55,000        0        35,500(12)     15,750(13)
 and                         1995  210,000      110,000        0             0          8,868(14)
 President, Research-
 Cottrell, Inc.
Douglas A. Satzger.....      1997  206,003            0        0             0          5,970(15)
 Senior Vice President,      1996  211,622       32,000        0        41,500(16)     13,750(17)
 General Counsel and         1995  200,013       55,000        0             0         10,750(18)
 Secretary
Patrick L. McMahon.....      1997  190,784            0        0             0         16,650(19)
 Senior Vice President       1996  170,019       75,000        0        19,000(20)      2,200(21)
 and President,              1995   66,003(22)   60,000        0             0          1,100(23)
 Professional Services
 Group, Inc.
</TABLE>    
- --------
 *  No longer employed by the Company.
       
          
(1) Mr. Houdaille served as President and Chief Executive Officer of the
    Company from May 1996 to November 1996.     
   
(2) "All Other Compensation" for Mr. Houdaille for fiscal year 1996 consists
    of $45,840 of housing expenses paid on behalf of Mr. Houdaille.     
   
(3) Mr. Sheh served as Chairman of the Board of Directors and Chief Executive
    Officer of the Company from November 1996 to October 1997.     
   
(4) Mr. Sheh was granted 50,000 options exercisable at $6.31 per share
    pursuant to the Company's Long-Term Incentive Plan.     
   
(5) "All Other Compensation" for Mr. Sheh for fiscal year 1997 consists of
    $89,415 paid to Mr. Sheh as relocation expenses and $10,721 resulting from
    an automobile leased for Mr. Sheh by the Company.     
   
(6) Mr. Mallet was elected President and Chief Executive Officer of the
    Company on October 24, 1997 and it is presently anticipated that he will
    be paid an annual salary of approximately $300,000 per year.     
 
                                      92
<PAGE>
 
   
(7) "All Other Compensation" for Mr. Brunais for fiscal year 1997 consists of
    approximately $65,036 paid as a housing allowance on behalf of Mr.
    Brunais, approximately $7,752 resulting from an automobile leased for Mr.
    Brunais by the Company and $3,000 contributed to the Company's Savings and
    Retirement Plan on behalf of Mr. Brunais.     
   
(8) Mr. Brunais was granted 18,000 options exercisable at $6.563 per share
    pursuant to the Company's Long-Term Incentive Plan.     
   
(9) "All Other Compensation" for Mr. Brunais for fiscal year 1996 consists of
    approximately $71,000 paid as a housing allowance on behalf of Mr. Brunais
    and approximately $6,000 paid as an automobile allowance.     
   
(10) "All Other Compensation" for Mr. Brunais for fiscal year 1995 consists of
     approximately $71,000 paid as a housing allowance on behalf of Mr.
     Brunais and approximately $3,000 paid as an automobile allowance.     
   
(11) "All Other Compensation" for Mr. Mammola for fiscal year 1997 consists of
     approximately $12,000 paid as an automobile allowance and $3,000
     contributed to the Company's Savings and Retirement Plan on behalf of Mr.
     Mammola.     
   
(12) Mr. Mammola was granted 20,157 options exercisable at $6.563 per share
     pursuant to the Company's Long-Term Incentive Plan and 15,343 options
     exercisable at $8.00 per share pursuant to the Company's "Fresh Start"
     program.     
          
(13) "All Other Compensation" for Mr. Mammola for fiscal year 1996 consists of
     approximately $12,000 paid as an automobile allowance and $3,750
     contributed to the Company's Savings and Retirement Plan on behalf of Mr.
     Mammola.     
   
(14) "All Other Compensation" for Mr. Mammola for fiscal year 1995 consists of
     $4,055 contributed to the Company's Savings and Retirement Plan on behalf
     of Mr. Mammola and $4,813 paid to Mr. Mammola as an automobile allowance.
            
(15) "All Other Compensation" for Mr. Satzger for fiscal year 1997 consists of
     $2,970 resulting from an automobile leased for Mr. Satzger by the Company
     and $3,000 contributed to the Company's Savings and Retirement Plan on
     behalf of Mr. Satzger.     
   
(16) Mr. Satzger was granted 20,167 options exercisable at $6.563 per share
     pursuant to the Company's Long-Term Incentive Plan and 21,333 options
     exercisable at $8.00 per share pursuant to the Company's "Fresh Start"
     program.     
   
(17) "All Other Compensation" for Mr. Satzger for fiscal year 1996 consists of
     approximately $10,000 paid to Mr. Satzger as an automobile allowance and
     $3,750 contributed to the Company's Savings and Retirement Plan on behalf
     of Mr. Satzger.     
   
(18) "All Other Compensation" for Mr. Satzger for fiscal year 1995 consists of
     approximately $7,000 paid to Mr. Satzger as an automobile allowance and
     $3,750 contributed to the Company's Savings and Retirement Plan on behalf
     of Mr. Satzger.     
   
(19) "All Other Compensation" for Mr. McMahon for fiscal year 1997 consists of
     $8,946 resulting from an automobile leased for Mr. McMahon by the Company
     and $7,704 contributed to PSG's Pension Plan.     
   
(20) Mr. McMahon was granted 9,000 options at $6.563 per share pursuant to the
     Company's Long-Term Incentive Plan and 10,000 options at $8.00 per share
     pursuant to the Company's "Fresh Start" program.     
       
          
(21) "All Other Compensation" for Mr. McMahon during fiscal year 1996 consists
     of approximately $2,200 resulting from an automobile leased for Mr.
     McMahon by PSG.     
   
(22) Represents amounts paid to Mr. McMahon during fiscal year 1995 since
     joining PSG in May 1995. Mr. McMahon was paid a base salary of $170,000.
            
(23) "All Other Compensation" for Mr. McMahon during fiscal year 1995 consists
     of approximately $1,100 paid to Mr. McMahon resulting from an automobile
     leased for Mr. McMahon by PSG.     
       
       
                                      93
<PAGE>
 
AGGREGATED OPTION EXERCISES AND FISCAL YEAR-END OPTION VALUES
   
  The following table sets forth information with respect to the named
executives concerning unexercised options, held as of October 31, 1997. No
options were exercised during fiscal 1997 by any of the named executive
officers.     
 
  AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END OPTION
                                    VALUES
 
<TABLE>   
<CAPTION>
                              NUMBER OF SECURITIES
                             UNDERLYING UNEXERCISED     VALUE OF UNEXERCISED
                             OPTIONS AT FISCAL YEAR-    IN-THE-MONEY OPTIONS
                                       END              AT FISCAL YEAR-END(1)
                            ------------------------- -------------------------
                            EXERCISABLE UNEXERCISABLE EXERCISABLE UNEXERCISABLE
NAME                            (#)          (#)          (#)          (#)
- ----                        ----------- ------------- ----------- -------------
<S>                         <C>         <C>           <C>         <C>
Alain Houdaille(3)*........        0            0           0            0
Robert B. Sheh(4)*.........   50,000            0           0(2)         0(2)
Thierry M. Mallet(5).......        0            0           0            0
Alain Brunais(6)...........   52,800       15,200           0(2)         0(2)
George C. Mammola(7).......   28,642        6,858           0(2)         0(2)
Douglas A. Satzger(8)......   33,142        8,358           0(2)         0(2)
Patrick L. McMahon(9)......   11,750        7,250           0(2)         0(2)
</TABLE>    
- --------
 * No longer employed by the Company.
   
(1) The value of unexercised in-the-money options at fiscal year-end assumes a
    fair market value for the Class A Common Stock of $1.50, the closing sale
    price per share of the Class A Common Stock as reported on the American
    Stock Exchange Composite Tape for October 31, 1997.     
   
(2) The exercisable and unexercisable options held by Messrs. Sheh, Brunais,
    Mammola, Satzger and McMahon were not in-the-money as of October 31, 1997.
        
          
(3) Mr. Houdaille served as President and Chief Executive Officer of the
    Company from May 1996 to November 1996.     
   
(4) On October 24, 1997, Mr. Sheh and the Company entered into an agreement,
    which terminated the Employment Agreement dated November 7, 1996, and
    entered into the Sheh Separation Agreement relating to their relationship
    thereafter. The options held by Mr. Sheh as of such date are currently
    exercisable at an exercise price of $6.310 per share. The options were
    granted in November 1996 pursuant to the Employment Agreement.     
   
(5) Mr. Mallet was elected President and Chief Executive Officer of the
    Company on October 24, 1997.     
   
(6) The exercise price of the options held by Mr. Brunais is (i) $6.563 per
    share in the case of his option to purchase 18,000 shares granted in March
    1996 or (ii) $8.00 per share in the case of his option to purchase 50,000
    shares granted in August 1994.     
          
(7) The exercise price of the options held by Mr. Mammola is (i) $6.563 per
    share in the case of his option to purchase 20,157 shares granted in March
    1996 or (ii) $8.00 per share in the case of his option to purchase 15,343
    shares granted in January 1996.     
   
(8) The exercise price of the options held by Mr. Satzger is (i) $6.563 per
    share in the case of his option to purchase 20,167 shares granted in March
    1996 or (ii) $8.00 per share in the case of his option to purchase 21,393
    shares granted in January 1996.     
   
(9) The exercise price of options held by Mr. McMahon is (i) $6.563 per share
    in the case of his option to purchase 9,000 shares granted in March 1996
    or (ii) $8.00 per share in the case of his option to purchase 10,000
    shares granted in January 1996.     
 
 
                                      94
<PAGE>
 
SUPPLEMENTAL PENSION PLAN
 
  The following table shows the estimated annual benefits payable upon
retirement to participants in the Company's Supplemental Pension Plan.
 
                     ESTIMATED ANNUAL RETIREMENT BENEFITS
 
<TABLE>
<CAPTION>
                                                   YEARS OF SERVICE
          BONUS                         ---------------------------------------
       REMUNERATION                       15      20      25      30      35
       ------------                     ------- ------- ------- ------- -------
       <S>                              <C>     <C>     <C>     <C>     <C>
       $ 25,000........................ $ 5,625 $ 7,500 $ 9,375 $11,250 $13,125
         50,000........................  11,250  15,000  18,750  22,500  26,250
         75,000........................  16,875  22,500  28,125  33,750  39,375
        100,000........................  22,500  30,000  37,500  45,000  52,500
        125,000........................  28,125  37,500  46,875  56,250  65,625
</TABLE>
   
  The unfunded Supplemental Pension Plan provides additional annual retirement
benefits equal to 1.5% of the average of the participant's final five bonuses
multiplied by the participant's years of service, up to a maximum of 35 years.
No separate accounts are maintained and no amounts are vested until a
participant reaches retirement in the employ of the Company. The benefit
amounts set forth in the table above are not subject to reduction for social
security benefits or for other offsets.     
 
EMPLOYMENT CONTRACTS, TERMINATION OF EMPLOYMENT AND CHANGE-IN-CONTROL
ARRANGEMENTS
   
  Employment Contracts. On November 7, 1996 the Company entered into an
employment agreement (the "Employment Agreement") with Robert B. Sheh,
pursuant to which Mr. Sheh served as Chief Executive Officer and President of
the Company. Consistent with the terms of the Investment Agreement, Mr. Sheh
was appointed Chief Executive Officer and President pursuant to CGE's right to
designate the Chief Executive Officer of the Company. The Employment Agreement
provided for an annual base salary of $400,000, with such increases as
determined by the Board of Directors of the Company from time to time in its
sole discretion. In addition, the Employment Agreement provided that Mr. Sheh
would be eligible to receive a supplemental bonus of up to 60% of Mr. Sheh's
base salary in each fiscal year, which bonus would be determined by the Board
of Directors of the Company. Mr. Sheh was awarded 50,000 fully vested options
upon commencement of employment, with 50,000 options to be awarded each year
at the beginning of the second, third, fourth and fifth fiscal year of his
service. If Mr. Sheh's employment was terminated by the Company for cause, the
Employment Agreement provided that the Company would pay to Mr. Sheh only his
base salary through the date of termination. If Mr. Sheh's employment was
terminated without cause (absent death or disability), the Employment
Agreement provided for Mr. Sheh to receive certain payments for a period of
two years from the date of termination.     
 
  On October 24, 1997, Mr. Sheh and the Company jointly entered into an
agreement (the "Sheh Separation Agreement"), which terminated the Employment
Agreement and provided for the following: (i) except for certain non-
competition and confidentiality provisions which shall survive, the
termination of the Employment Agreement, (ii) the resignation of Mr. Sheh as a
director of the Company, and (iii) the payment of certain amounts to Mr. Sheh
over a two-year period.
          
  Change in Senior Management. On October 24, 1997, Mr. Sheh was succeeded by
Thierry Mallet as President and Chief Executive Officer of the Company, and
the Board of Directors of the Company appointed then serving director Mr.
William Kriegel as Mr. Sheh's successor as Chairman of the Board of the
Company. On October 26, 1997, the Board also named Mr. Mallet as a director of
the Company. Mr. Kriegel has been a Director of the Company since 1994. Since
December 1996, he has served as Chairman and Chief Executive Officer of Anjou.
Mr. Kriegel is also Chairman, President and Chief Executive Officer of Sithe
Energies, Inc. and all of its subsidiaries. Prior to his appointment, Mr.
Mallet served as Chief Executive Officer of CGE's water and wastewater
activities in Spain.     
 
  Options. The Company's Long-Term Incentive Plan provides that, upon a
"change-in-control" of the Company (as determined by the Board of Directors),
any outstanding options not theretofore fully exercisable
 
                                      95
<PAGE>
 
shall immediately become exercisable in their entirety. The Board of Directors
has determined that the consummation of the transactions contemplated by the
Investment Agreement constituted a "change-in-control" for purposes of such
plan.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
   
  On and prior to January 21, 1997, the Compensation and Stock Option
Committee (the "Compensation Committee") of the Board of Directors consisted
of Messr. Deschamps, Lieutenant General Morris and Ms. Green. Mr. Deschamps
resigned from the Board of Directors of the Company on January 21, 1997. From
January 21, 1997 to October 9, 1997, the Compensation Committee consisted of
Lieutenant General Morris and Ms. Green. On October 9, 1997, Mr. Banon was
elected a director of the Company. Since October 9, 1997, the Compensation
Committee consists of Lieutenant General Morris, Ms. Green and Mr. Banon. Mr.
Deschamps is Adjunct Director General of CGE. Ms. Green is a partner at the
law firm of Bryan, Cave, LLP, which has performed limited legal services for
the Company from time to time. Ms. Green has not personally represented the
Company. Since 1989, Mr. Banon has been Managing Director of General Utilities
PLC, the holding company for CGE's investments in the water industry in the
United Kingdom, and since 1992 he has been Managing Director of General
Utilities Holdings Ltd., the holding company for all CGE activities in the
United Kingdom. Mr. Banon has been designated by CGE as a director of the
Company under the Investment Agreement.     
 
                                      96
<PAGE>
 
                          OWNERSHIP OF CAPITAL STOCK
   
  The following table sets forth information regarding the beneficial
ownership of the Company's capital stock as of    , 1997 and on a pro forma
basis assuming that the Requisite Consents are obtained, the Charter Amendment
is effected and, in the case of the "Maximum Subscription," that each Rights
holder exercises its Basic Subscription Privilege in full, and, in the case of
the "Minimum Subscription," that CGE and Anjou are the only stockholders
exercising Rights in the Rights Offering, in each case at the Subscription
Price, with respect to (i) each person known by the Company to beneficially
own in excess of 5% of the outstanding shares of Class A Common Stock, (ii)
each of the Company's directors, (iii) each named executive officer of the
Company, and (iv) all directors and executive officers as a group. Unless
otherwise indicated, each of the stockholders has sole voting and investment
power with respect to the shares beneficially owned.     
 
<TABLE>   
<CAPTION>
                                                           PRO FORMA                 PRO FORMA
                                                           NUMBER OF    PRO FORMA    NUMBER OF    PRO FORMA
                                                           SHARES OF    PERCENT OF   SHARES OF    PERCENT OF
                              NUMBER OF                     CLASS A     SHARES OF     CLASS A     SHARES OF
                              SHARES OF       PERCENT OF  COMMON STOCK   CLASS A    COMMON STOCK   CLASS A
                               CLASS A        SHARES OF   BENEFICIALLY COMMON STOCK BENEFICIALLY COMMON STOCK
                             COMMON STOCK      CLASS A       OWNED     OUTSTANDING     OWNED     OUTSTANDING
                             BENEFICIALLY    COMMON STOCK   MAXIMUM      MINIMUM      MINIMUM      MINIMUM
 NAME OF PERSON OR GROUP        OWNED        OUTSTANDING  SUBSCRIPTION   EXERCISE   SUBSCRIPTION SUBSCRIPTION
 -----------------------     ------------    ------------ ------------ ------------ ------------ ------------
<S>                          <C>             <C>          <C>          <C>          <C>          <C>
William V. Kriegel........             0          *
Thierry Mallet............             0          *
Jean Claude Banon.........             0          *
Daniel Caille.............             0          *
Alain Brunais.............        53,800 (1)      *
Carol Lynn Green..........             0          *
John W. Morris............         3,079          *
Alain Houdaille(2)**......             0          *
Robert B. Sheh(3)**.......        50,000 (4)      *
George C. Mammola.........        29,522 (5)      *
Douglas A. Satzger........        35,142 (6)      *
Patrick L. McMahon........        11,750 (7)      *
Joseph R. Vidal...........         5,675 (8)      *
Gail M. Fulwider..........             0          *
Robert S. Volland.........        34,850 (9)      *
Jekabs P. Vittands........        25,672(10)      *
Compagnie Generale
 des Eaux.................    18,409,975(11)   50.0009
 52 Rue d'Anjou
 75384 Paris Cedex 08
 France
State of Wisconsin
 Investment Board.........     3,116,775(12)     9.7
 P.O. Box 7842
 Madison, Wisconsin 53207
U.S. Bancorp and Qualivest
 Capital Management, Inc...    2,829,300(13)     8.8
 111 S.W. Fifth Avenue
 Portland, Oregon 97204
All directors and officers
 as a group (14 persons)..    18,609,465(14)     50.3
</TABLE>    
- --------
 * Less than 1% ownership
          
** No longer employed by the Company.     
 
                                      97
<PAGE>
 
   
(1) Includes 52,800 shares of Class A Common Stock which may be acquired
    within 60 days of the date of the table.     
   
(2) Mr. Houdaille served as President and Chief Executive Officer of the
    Company from May 1996 to November 1996.     
          
(3) Mr. Sheh served as Chairman of the Board of Directors and Chief Executive
    Officer of the Company from November 1996 to October 1997.     
   
(4) Represents 50,000 shares of Class A Common Stock which may be acquired
    within 60 days of the date of the table. On October 24, 1997, Mr. Sheh and
    the Company jointly entered into an agreement, which terminated the
    Employment Agreement dated November 7, 1996, and entered into the Sheh
    Separation Agreement relating to their relationship thereafter.     
   
(5) Includes 28,642 shares of Class A Common Stock which may be acquired
    within 60 days of the date of the table.     
   
(6) Includes 33,142 shares of Class A Common Stock which may be acquired
    within 60 days of the date of the table.     
   
(7) Represents 11,750 shares of Class A Common Stock which may be acquired
    within 60 days of the date of the table.     
   
(8) Includes 5,460 shares of Class A Common Stock which may be acquired within
    60 days of the date of the table.     
   
(9) Includes 31,850 shares of Class A Common Stock which may be acquired
    within 60 days of the date of the table.     
   
(10) Includes 20,190 shares of Class A Common Stock which may be acquired
     within 60 days of the date of this table.     
   
(11) Includes 6,702,500 shares of Class A Common Stock owned indirectly
     through Anjou. Includes 4,800,000 shares of Class A Common Stock
     underlying the 1,200,000 shares of the Series A Preferred Stock
     beneficially owned by CGE. CGE owns all of the outstanding shares of the
     Series A Preferred Stock.     
   
(12) As reported by the State of Wisconsin Investment Board in a Report on
     Schedule 13G filed with the Commission.     
   
(13) As reported by U.S. Bancorp and Qualivest Capital Management, Inc., a
     wholly-owned subsidiary of U.S. Bancorp, in a Report on Schedule 13G for
     the year ended December 31, 1996, filed with the Commission on February
     14, 1997. Pursuant to such Schedule 13G, U.S. Bancorp reports that it has
     sole power to vote or direct the vote of 2,781,500 shares, sole power to
     dispose or direct the disposition of 1,338,700 shares and shared power to
     dispose or direct the disposition of 77,000 shares.     
   
(14) Includes 183,834 shares of Class A Common Stock which may be acquired
     within 60 days of the date of the table. Includes 18,409,975 shares of
     Class A Common Stock beneficially owned by CGE.     
 
                                      98
<PAGE>
 
                CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
INITIAL CGE INVESTMENT; LETTER AGREEMENT
 
  Pursuant to a letter agreement dated March 18, 1994 between the Company and
CGE, CGE purchased 500,000 shares of the Company's Class A Common Stock, at
$10.00 per share for a total purchase price of $5,000,000. CGE also agreed in
the letter agreement that, subject to approval by CGE, CGE would co-sign on a
case-by-case basis with the Company applications for letters of credit with
respect to the Company's water and wastewater management and air pollution
projects, which CGE acknowledged could reach or exceed the level of letters of
credit carried by the Company at March 18, 1994.
 
THE INVESTMENT AGREEMENT
   
  On June 14, 1994, the stockholders of the Company approved the issuance of
Company securities pursuant to the Investment Agreement pursuant to which,
among other things, the Company (i) issued to CGE 1,200,000 shares of Series A
Preferred Stock, convertible into 4,800,000 shares of Class A Common Stock,
for cash consideration of $60 million, and (ii) issued to Anjou an aggregate
of 6,701,500 shares of Class A Common Stock in connection with the acquisition
from Anjou of PSG and PSG Canada, Inc., a Canadian corporation ("PSG Canada").
As a result, CGE increased its ownership interest in the Company to
approximately 48% of the total voting power of the Company's voting
securities. In addition, the Company benefited from certain financial
undertakings from CGE, including the $125 million CGE Note, and became CGE's
exclusive vehicle in the United States, its possessions and its territories
for CGE's water management and wastewater management and air pollution
activities, subject to certain exceptions. CGE also has representation on the
Company's Board of Directors and the right to designate the Company's Chief
Executive Officer and the Chief Financial Officer, all as further described
below. In August 1996, the Company entered into a seven-year $60 million
unsecured revolving credit facility with Anjou. On September 24, 1997, the
Company, CGE and Anjou entered into the Recapitalization Agreement, whereby
the Company would effect the Exchange and the Rights Offering and use a
portion of the gross proceeds from the Rights Offering to repay the CGE Note
and the Anjou Note. See "The Recapitalization." Pursuant to the
Recapitalization Agreement, the Company, CGE and Anjou also entered into
agreements with respect to certain other matters, including the Consent
Solicitation, the Charter Amendment and certain other strategic business
issues. See "The Recapitalization--Consent Solicitation" and "The
Recapitalization--Other." On    , 1997, CGE and the Company effected the
Exchange pursuant to which all of the shares of Series A Preferred Stock held
by CGE were exchanged for shares of Class A Common Stock at an exchange price
equal to the Subscription Price.     
 
  CERTAIN COVENANTS OF THE COMPANY
   
  Representation on the Board of Directors; Management. Under the terms of the
Investment Agreement, the Company has agreed that CGE will have the right to
designate as members of the Company's Board of Directors at least that number
of directors that is proportionate to the aggregate voting power represented
by the Shares of Class A Common Stock and Series A Preferred Stock
beneficially owned by CGE (subject to a minimum of three Independent
Directors). Although the Investment Agreement requires the Company to maintain
three Independent Directors, the Company currently has only two Independent
Directors. The Company has further agreed that CGE will have proportionate
representation on all Committees of the Board (other than any Special
Committee of Independent Directors) to the same extent as CGE is entitled to
representation on the Board of Directors. For purposes of the Investment
Agreement, "Independent Director" is defined as "any Director who is not an
employee, agent or representative of AWT, CGE or any of their respective
Affiliates or Associates (as defined in the Investment Agreement) and may
include any person acting as outside counsel or financial advisor for either
AWT or CGE or any of their respective Affiliates or Associates." All
Independent Directors must be satisfactory to CGE. The Chairman of the Board
of the Company also shall be designated by CGE.     
 
  The Company has also agreed in the Investment Agreement that CGE shall have
the right to designate the Chief Executive Officer and the Chief Financial
Officer of the Company.
 
                                      99
<PAGE>
 
   
  At the Annual Meeting held on May 29, 1997, stockholders of the Company
elected three directors who were designated by CGE (Messrs. Sheh, Brunais and
Kriegel). Also in accordance with the terms of the Investment Agreement, the
Board of Directors appointed, as designees of CGE, Mr. Sheh as Chairman of the
Board of Directors, President and Chief Executive Officer and Mr. Alain
Brunais as Senior Vice President and Chief Financial Officer. At meetings of
the Board held on May 29, 1997 and October 9, 1997, the Board of Directors
appointed Messrs. Caille and Banon, respectively, to fill the vacancies on the
Board. On October 24, 1997, the Board of Directors of the Company appointed
CGE's designee Mr. Kriegel as Mr. Sheh's replacement as Chairman of the Board
and also appointed CGE's designee Mr. Mallet as Mr. Sheh's successor as
President and Chief Executive Officer of the Company. Mr. Mallet was appointed
to the Board of Directors as CGE's designee on October 26, 1997.     
   
  Registration Rights. Pursuant to the terms of the Investment Agreement, CGE
and Anjou will have the right to require on up to four occasions that the
Company register all shares of Class A Common Stock, Series A Preferred Stock
or Convertible Debt (as defined hereinafter) owned from time to time by CGE
and its affiliates for sale to the public under the Securities Act (a "Demand
Registration"), provided that the Company is not obligated (i) to effect more
than one Demand Registration in any six-month period, (ii) to effect a Demand
Registration for less than five percent of the outstanding Class A Common
Stock, (iii) to effect a Demand Registration within six months of CGE or Anjou
selling any shares of Class A Common Stock, Series A Preferred Stock or
Convertible Debt (as defined hereinafter), pursuant to a Piggyback
Registration (as defined below) or (iv) to effect a Demand Registration if the
Company shall have filed or announced its intention to file a registration
statement of an offering of shares of Class A Common Stock for its own account
and shall be taking steps in pursuance thereof or if the Company shall have
completed such a registered offering within the immediately preceding ninety
days. In addition, CGE and Anjou will have the right to participate in
registrations by the Company of its Class A Common Stock (a "Piggyback
Registration"). The Company will pay all registration expenses on behalf of
CGE and Anjou, including certain related fees and expenses, other than
underwriting fees and discounts.     
   
  Access to Books and Records. The Company has agreed that for so long as CGE
beneficially owns directly or indirectly at least 26% of the outstanding
shares of Class A Common Stock on a fully-diluted basis, CGE will have access
on reasonable terms to the books, records and employees of the Company and its
subsidiaries and to the provision by the Company of all information reasonably
requested by CGE, subject to confidentiality obligations that at the time may
be owed by the Company to third parties and to appropriate confidentiality
arrangements and requirements of law.     
 
  CERTAIN COVENANTS OF CGE
   
  Exclusivity. Under the terms of the original Investment Agreement CGE agreed
on behalf of itself and its affiliates that, for so long as CGE (with its
affiliates) is the largest stockholder of the Company, the Company would be
CGE's exclusive vehicle in the United States, its possessions and its
territories for CGE's water and wastewater management and air pollution
activities. CGE also agreed to assist (and to cause its affiliates to assist)
the Company in developing its water and wastewater management and air
pollution activities in both Canada and Mexico, subject to existing
contractual agreements and taking into account the respective interests of the
Company and CGE and its affiliates. In addition, CGE agreed to offer (and to
cause its affiliates to offer) the Company active participation in any new
water management investments by CGE (or its affiliates) in the United States
which are too capital intensive for the Company to undertake on a stand-alone
basis.     
   
  Pursuant to the Recapitalization Agreement and the Investment Agreement as
amended by the Recapitalization Agreement, CGE agreed on behalf of itself and
its affiliates that, for so long as CGE (with its affiliates) is the largest
stockholder of the Company, the Company shall be CGE's exclusive vehicle in
the United States, its possessions and its territories for its water
management and wastewater management and air pollution     
 
                                      100
<PAGE>
 
activities; provided that the foregoing shall not apply to any acquisition or
investment by CGE (or any of its affiliates) of a privately-owned, publicly-
traded or publicly-owned company in the water utility sector whose primary
business is the production, distribution and/or sale of potable, fire, bulk,
draining or irrigation water ("Water Utility"), nor to CGE's present or future
investments in Consumers Water Company and Philadelphia Suburban Corporation
(such Water Utilities, Consumers Water Company and Philadelphia Suburban
Corporation hereinafter referred to collectively as the "Water Businesses").
   
  In addition, CGE has agreed to assist (and cause its affiliates to assist)
the Company in developing its water management and wastewater management and
air pollution activities in both Canada and Mexico, subject to contractual
agreements as of March 30, 1994 and taking into account the respective
interests of the Company and CGE and its affiliates. CGE also agreed to offer
the Company an active participation in any proposed water management or
wastewater management activities by CGE (or any of its affiliates) in the
United States (which shall be deemed to exclude the Water Businesses), which
investment is too capital intensive for the Company to undertake on a stand-
alone basis.     
   
  In addition, in the event CGE (or any of its affiliates) acquires control of
a Water Business which is also engaged in wastewater activities similar to
those conducted by the Company as of the date of the original Investment
Agreement, then CGE (or such affiliate) has agreed to use reasonable efforts
to cause, subject to the fiduciary duties of the board of directors of such
Water Business and other applicable regulatory standards, that Water Business
to offer to the Company the opportunity to obtain "operating and maintenance"
contracts with the wastewater management business of, and the opportunity to
obtain engineering contracts with, such Water Business on terms which are
commercially reasonable in the judgment of such Water Business; provided that
the foregoing shall not apply to any existing business of Consumers Water
Company or Philadelphia Suburban Corporation as of the date of the original
Investment Agreement.     
   
  In addition, CGE (and its affiliates) and the Company agreed to establish a
privileged commercial relationship for the development of air pollution
activities in Europe.     
 
  Finally, the Investment Agreement, as amended, provides that the exclusivity
provision shall have no application to Kruger, Inc., a distributor of water
treatment plant parts and components and an indirect subsidiary of Omnium
Traitement et de Valorisation.
   
  Affiliate Transactions. CGE has agreed on behalf of itself and its
affiliates that any transactions (or series of related transactions in a
chain) between the Company and any of its affiliates and CGE or any of its
affiliates will be on an arm's length basis. Any such transaction (or such
series of transactions) having an aggregate value in excess of $1,000,000 must
be approved by a majority of the Independent Directors or a special committee
thereof acting in a separate meeting or by unanimous written consent. The
Company, CGE and Anjou have further agreed that all actions by the Company
with respect to any claim by the Company against CGE or its affiliates under
the Investment Agreement will be taken only by majority approval of such
Independent Directors or a special committee thereof, so acting in a separate
meeting or by unanimous written consent.     
   
  Sales of Shares. CGE has also agreed to give the Company one day's prior
written notice of any sale of shares of Class A Common Stock or Series A
Preferred Stock held by CGE or its affiliates if, to the knowledge of CGE,
such sale would result in any person beneficially owning more than 15% of the
outstanding shares of Class A Common Stock.     
 
 ISSUANCE OF SERIES A PREFERRED STOCK
 
  Pursuant to the terms of the Investment Agreement, the Company issued to CGE
1,200,000 shares of Series A Preferred Stock, convertible into 4,800,000
shares of Class A Common Stock, for an aggregate cash purchase price of
$60,000,000. The Series A Preferred Stock is exchangeable at the option of the
Company for the Company's 5 1/2% Convertible Subordinated Notes with a
maturity of ten years from the date of issuance of such notes (the
"Convertible Debt"). See "Description of Capital Stock." The Series A
Preferred Stock was
 
                                      101
<PAGE>
 
   
exchanged for     shares of Class A Common Stock in the Exchange at an
exchange price equal to the Subscription Price. During fiscal 1996 and 1997,
the Company paid $3.3 million and $2.5 million, respectively, in dividends to
CGE on the Series A Preferred Stock.     
 
CGE NOTE
   
  In connection with the Investment Agreement, the Company and CGE entered
into a Credit Agreement dated as of June 14, 1994 pursuant to which the
Company received the CGE Note in a principal amount of $125 million. The CGE
Note is an unsecured facility bearing interest at a rate based upon one, two,
three or six-month LIBOR, as selected by the Company, plus 1.25% and has a
final maturity of June 15, 2001. The CGE Note contains certain financial and
other restrictive covenants with respect to the Company relating to, among
other things, the maintenance of certain financial ratios, and restrictions on
the sale of assets and the payment of dividends on or the redemption,
repurchase, acquisition or retirement of securities of the Company or its
subsidiaries. On June 14, 1994, the Company utilized a substantial portion of
the proceeds from the CGE Note to retire its 11.8% Senior Notes with The
Prudential Insurance Company of America. The Company had incurred
approximately $8.9 million and $8.7 million of interest related to the CGE
Note during fiscal 1996 and 1997, respectively. The Company expects to repay
the CGE Note with a portion of the gross proceeds from the Rights Offering.
See "Use of Proceeds."     
 
INVOLVEMENT OF CGE IN OTHER FINANCING ARRANGEMENTS
   
  On March 10, 1995, the Company entered into the Bank Credit Facility with
The First National Bank of Chicago and Societe Generale, New York Branch,
acting as co-agents for a syndicate which includes seven additional banks. As
of December 19, 1997, the Company's borrowings under the Bank Credit Facility
totaled $14.8 million and outstanding letters of credit under the Bank Credit
Facility totaled $22.9 million (unused capacity of $32.3 million). The Bank
Credit Facility is primarily designed to finance working capital requirements
and provide for the issuance of letters of credit, both subject to limitations
and secured by a first security interest in substantially all of the assets of
the Company. Of the total commitment under the terms of the Bank Credit
Facility, borrowings are limited to the lesser of $70 million or the sum of a
percentage of certain eligible receivables, inventories, net property, plant
and equipment and costs and estimated earnings in excess of billings, and bear
interest at LIBOR plus 1.25%, or at a defined bank rate approximating prime.
The Bank Credit Facility also allows for certain additional borrowings,
including, among other things, project financing and foreign borrowing
facilities, subject to limitations and contains certain financial and other
restrictive covenants, including, among other things, the maintenance of
certain financial ratios, and restrictions on the incurrence of additional
indebtedness, acquisitions, the sale of assets, the payment of dividends and
the repurchase of subordinated debt. In addition, the related agreement
requires CGE to maintain its support of the Company, including, a minimum 48%
voting equity ownership interest in the Company and its right to designate at
least 48% on the Company's Board of Directors, as well as to appoint the Chief
Executive Officer and the Chief Financial Officer of the Company. The Company
compensates CGE for its support in an amount equal to 0.95% per annum of the
outstanding commitment of its credit facilities ($1.2 million for each of the
years ended October 31, 1996 and 1997,).     
 
ANJOU CREDIT AGREEMENT
   
  On August 2, 1996, the Company entered into a $60 million seven-year
unsecured revolving credit facility with Anjou pursuant to which the Company
received the Anjou Note. The facility matures on August 2, 2003. The Anjou
Note bears interest at LIBOR plus 0.6%. In conjunction with this new financing
the Company reduced its more expensive $130 million Bank Credit Facility to
$50 million. As of October 31, 1997, the Company's outstanding borrowings
under the Anjou Note totaled $60 million. The Company had incurred
approximately $0.7 million and $3.7 million of interest on this loan during
fiscal 1996 and 1997, respectively. The Company expects to repay the Anjou
Note with a portion of the proceeds from the Rights Offering. See "Use of
Proceeds."     
 
                                      102
<PAGE>
 
RECAPITALIZATION AGREEMENT; OTHER CGE RELATED MATTERS
 
  On September 24, 1997, the Company, CGE and Anjou entered into a
Recapitalization Agreement whereby the Company would, among other things,
effect the Exchange, and conduct the Rights Offering. See "The
Recapitalization--General." Pursuant to the Recapitalization Agreement, the
Company, CGE and Anjou also entered into agreements with respect to certain
other matters, including the Consent Solicitation, the Charter Amendment and
CGE's agreement to work with the Company to enhance the Company's
participation in the emerging privatization market in the wastewater
management industry. See"The Recapitalization--Consent Solicitation" and "The
Recapitalization--Other."
 
  Pursuant to the Recapitalization Agreement, immediately prior to the Record
Date, CGE and the Company effected the Exchange pursuant to which the shares
of Series A Preferred Stock held by CGE were automatically exchanged for
shares of Class A Common Stock. In addition, CGE has agreed to exercise in
full its Basic Subscription Privilege and has agreed to the Conditional CGE
Subscription, up to a maximum aggregate subscription of $185 million. As a
result, if no other Rights are exercised, CGE will acquire    shares of Class
A Common Stock. Consequently, immediately after the Recapitalization, CGE
would own approximately   % of the total outstanding Class A Common Stock of
the Company. See "Risk Factors--Controlling Stockholder; Ability of
Controlling Stockholder to Increase Ownership."
 
  Anjou has entered into an agreement with USF&G regarding an arrangement
pursuant to which, until terminated at Anjou's discretion, Anjou will enter
into guarantees of certain obligations of the Company relating to the bonding
of certain contracts under the Master Surety Agreement dated as of October 31,
1995 between USF&G and the Company and its subsidiaries. Such guarantees would
cover, in each instance, 30% of the aggregate amount of the bonds executed,
procured or provided on behalf of the Company or its subsidiaries on or after
October 1, 1997, and certain penalty amounts, up to $45 million. CGE will
receive a fee of 1% of the lesser of (i) 30% of the aggregate amount of the
bonds executed, procured or provided on behalf of the Company or its
subsidiaries on or after October 1, 1997, and certain penalty amounts, or (ii)
$45 million.
   
  The Company did not declare the quarterly dividend of $825,000 due September
30, 1997 on the Series A Preferred Stock, all of which was held by CGE, due to
its concerns over liquidity and the adequacy of its surplus. The Company
currently intends to pay all such dividends in arrears in connection with the
Recapitalization.     
   
  CGE has unconditionally guaranteed performance by PSG of PSG's contract with
PRASA. During fiscal years ended October 31, 1997 and 1996, PSG's contract
with PRASA accounted for 38% and 39% of PSG's total sales and 23% and 22% of
the Company's total sales, respectively.     
 
  Following the Recapitalization, the Company will require additional
financial resources to develop and support each of its businesses at PSG and
Metcalf & Eddy, to undertake related long-term capital expenditures and to
participate in the emerging privatization market in the wastewater management
industry. CGE has informed the Company that it intends to work with the
Company to explore various ways to develop such financial resources for these
purposes, including, among others, the raising by CGE of an investment fund or
other off-balance sheet vehicle which would invest, on a case-by-case basis,
in various project financings undertaken by the Company. It is anticipated
that any such vehicle would invest in such project finance activities of the
Company on terms which are commercially reasonable. As a result, CGE and the
Company and possibly others, investing either directly or indirectly through
such vehicle or otherwise, would share in the returns on such projects pro
rata in relation to their respective equity investments.
 
OTHER RELATED TRANSACTIONS
 
  Ms. Green, a Director of the Company since June 1994, is a partner at the
law firm of Bryan, Cave LLP. Bryan, Cave LLP has performed limited legal
services for the Company from time to time. Ms. Green has not personally
represented the Company.
 
                                      103
<PAGE>
 
                              THE RIGHTS OFFERING
 
THE RIGHTS
   
  The Company is hereby distributing transferable Rights at no cost to each
Recordholder of outstanding shares of Class A Common Stock as of the close of
business on the Record Date of       , 1997. Each Recordholder of Class A
Common Stock at the close of business on the Record Date will receive
approximately     Rights for each share of Class A Common Stock owned of
record at the close of business on such date. The Rights will be evidenced by
transferable Rights Certificates. Each Right allows the holder thereof to
subscribe for one share of Class A Common Stock at the Subscription Price,
subject to the Company's obligation to issue Class B Common Stock in the event
the Requisite Consents are not obtained and issuing Class A Common Stock to
any individual stockholder would cause such person to beneficially own more
than 74% of the voting power of the Company. Each holder of Rights other than
CGE and Anjou who elects to exercise the Basic Subscription Privilege may also
subscribe at the Subscription Price for Excess Shares of Class A Common Stock
pursuant to the Oversubscription Privilege, subject to availability and
proration and the Company's obligation to issue shares of Class B Common Stock
in certain circumstances. An aggregate of    shares of Class A Common Stock
are being offered in the Rights Offering, subject to the Company's obligation
to issue shares of Class B Common Stock in certain circumstances. In addition,
the Company will issue on a pro rata basis to Rights holders other than CGE
and Anjou who purchase shares in the Rights Offering an aggregate number of
Warrants equal to the Warrant Pool, to purchase shares of Class A Common Stock
at an exercise price of $2.50 per share. See "Description of Warrants"     
 
  No fractional Rights or cash in lieu thereof will be issued or paid.
Instead, the number of Rights distributed to each Recordholder will be rounded
to the nearest whole number, with such adjustments as may be necessary to
ensure that if all Rights are exercised, gross proceeds to the Company will
equal $210 million.
 
  Because the number of Rights distributed to each Recordholder will be
rounded to the nearest whole number, with such adjustments as may be necessary
to ensure that no more than    shares of Class A Common Stock, subject to the
Company's obligation to issue shares of Class B Common Stock in certain
circumstances, are issued hereunder, beneficial owners of Class A Common Stock
who are also Recordholders of their shares may receive more Rights under
certain circumstances than beneficial owners of Class A Common Stock who are
not Recordholders of their shares and who do not obtain (or cause the record
holder of their shares of Class A Common Stock to obtain) a separate Rights
Certificate with respect to the shares beneficially owned by them, including
shares held in an investment advisory or similar account. To the extent that
Recordholders of Class A Common Stock or beneficial owners of Class A Common
Stock who obtain a separate Rights Certificate receive more Rights, they will
be able to subscribe for more shares pursuant to the Basic Subscription
Privilege and, in the event shares subscribed for pursuant to the
Oversubscription Privilege are prorated, such Recordholders or beneficial
owners will be able to subscribe for more shares pursuant to the
Oversubscription Privilege. See "--Method of Subscription--Exercise of
Rights."
 
EXPIRATION DATE
   
  The Rights will expire, if not exercised, at 5:00 p.m., New York City time,
on       , 1998, unless extended for up to ten days in the sole discretion of
the Company. After the Expiration Date, unexercised Rights will be null and
void. The Company will not be obligated to honor any purported exercise of
Rights received by the Subscription and Information Agent after 5:00 p.m., New
York City time, on the Expiration Date, regardless of when the documents
relating to such exercise were sent, except pursuant to the Guaranteed
Delivery Procedures described below. The Company may extend the Expiration
Date by giving oral or written notice to the Subscription and Information
Agent on or before the Expiration Date, followed by a press release no later
than 9:00 a.m., New York City time on the next business day after the
previously scheduled Expiration Date.     
 
SUBSCRIPTION PRIVILEGES
   
  Basic Subscription Privilege. Each Right will allow the holder thereof to
receive, upon payment of the Subscription Price, one share of Class A Common
Stock, subject to the Company's obligation to issue shares of     
 
                                      104
<PAGE>
 
Class B Common Stock in certain circumstances. The certificates representing
shares of Class A Common Stock and shares of Class B Common Stock, if any,
purchased pursuant to the Basic Subscription Privilege will be delivered to
subscribers as soon as practicable after the Expiration Date.
 
  Oversubscription Privilege. Subject to availability and proration as
described below and the Company's obligation to issue shares of Class B Common
Stock in certain circumstances, Rights holders who exercise the Basic
Subscription Privilege will be eligible to subscribe, at the Subscription
Price, for additional shares of Class A Common Stock.
   
  Shares of Class A Common Stock will be available for purchase pursuant to
the Oversubscription Privilege only to the extent that any Underlying Shares
are not subscribed for through the Basic Subscription Privilege. The Excess
Shares will be allocated pro rata (subject to the elimination of fractional
shares) among those Rights holders who exercise their Oversubscription
Privilege, in proportion, not to the number of shares requested pursuant to
the Oversubscription Privilege, but to the number of shares each beneficial
holder exercising the Oversubscription Privilege has purchased pursuant to the
Basic Subscription Privilege; provided, however, that if such pro rata
allocation results in any Rights holder being allocated a greater number of
Excess Shares than such holder subscribed for pursuant to the exercise of such
holder's Oversubscription Privilege, then such holder will be allocated only
such number of Excess Shares as such holder subscribed for and the remaining
Excess Shares will be allocated among all other holders exercising the
Oversubscription Privilege on the same pro rata basis outlined above; such
proration will be repeated until all Excess Shares have been allocated to the
full extent of the Oversubscription Privilege; provided further, however, that
CGE will not be allocated any Excess Shares pursuant to the Conditional CGE
Subscription until all other Rights holders exercising the Oversubscription
Privilege have been allocated the number of Excess Shares for which they
oversubscribed. Payment for oversubscription will be deposited upon receipt by
the Subscription and Information Agent pending a final determination of the
number of Underlying Shares to be issued pursuant to such Oversubscription
Privilege. If a proration of the Excess Shares results in a Rights holder
receiving fewer Excess Shares than such Rights holder subscribed for pursuant
to the Oversubscription Privilege, then the excess funds paid by that holder
at the Subscription Price for shares not issued will be returned by mail
without interest or deduction promptly after the expiration date and after all
prorations and adjustments contemplated by the Rights Offering have been
effected. Certificates representing shares of Class A Common Stock purchased
pursuant to the Oversubscription Privilege will be delivered to subscribers as
soon as practicable after the Expiration Date and after all prorations and
adjustments contemplated by the terms of the Rights Offering have been
effected.     
   
  Banks, brokers and other nominee Rights holders who exercise the Basic
Subscription Privilege and the Oversubscription Privilege on behalf of
beneficial owners of Rights will be required to certify to the Subscription
and Information Agent and the Company, in connection with the exercise of the
Oversubscription Privilege, as to the aggregate number of Rights that have
been exercised and the number of Underlying Shares that are being subscribed
for pursuant to the Oversubscription Privilege by each beneficial owner of
Rights on whose behalf such nominee holder is acting.     
   
  Conditional CGE Subscription. CGE, the beneficial owner of approximately   %
of the Class A Common Stock currently outstanding, has agreed to exercise in
full its Basic Subscription Privilege to subscribe for    shares of Class A
Common Stock. In addition, in the event that all Underlying Shares are not
purchased pursuant to the Rights Offering (including pursuant to the
Oversubscription Privilege), CGE will subscribe for and purchase at the
Subscription Price an additional number of shares of Class A Common Stock,
subject to the Company's obligation to issue Class B Common Stock in certain
circumstances. The total number of shares subscribed for by CGE and its
subsidiaries pursuant to the Conditional CGE Subscription will be no greater
than (i) the total number of shares of Class A Common Stock available to be
purchased by the Public in the Rights Offering, minus (ii) the total number of
shares of Class A Common Stock actually purchased by the Public in the Rights
Offering, and in no event will the gross proceeds resulting from CGE's and its
subsidiaries' Basic Subscription Privilege and the Conditional CGE
Subscription exceed $185 million. As a result, if no other Rights holder
exercises Rights in the Rights Offering, CGE will purchase    shares of Class
A Common Stock in the Rights Offering, subject to the Company's obligation to
issue Class B Common Stock in certain circumstances.     
 
                                      105
<PAGE>
 
SUBSCRIPTION PRICE
   
  The Subscription Price of $    per share was determined pursuant to a
formula set forth in the Recapitalization Agreement which provides that the
Subscription Price in the Rights Offering shall be equal to 82% of the average
daily Closing Prices (as defined hereinafter) of the Class A Common Stock for
the ten consecutive Trading Days (as defined hereinafter) ending five days
prior to the Record Date; provided, however, that in no event shall the
Subscription Price be less than $1.75 per share of Class A Common Stock or
exceed $2.50 per share of Class A Common Stock. As used herein, (i) "Closing
Price" means on any day the last reported sale price regular way on such day
or in case no sale takes place on such day, the average of the reported bid
and asked prices regular way on the AMEX or, if the Class A Common Stock is
not listed on such exchange, on the principal national securities exchange or
quotation system on which such Class A Common Stock is listed or admitted to
trading or quoted, or, if not listed or admitted to trading or quoted on any
national securities exchange or quotation system, the average of the closing
bid and asked prices in the over-the-counter market on such day as reported by
the National Quotation Bureau Incorporated, or a similar generally accepted
reporting service, or, if not so available in such manner, as furnished by any
New York Stock Exchange Member firm selected from time to time by the Board of
Directors of the Company for that purpose and (ii) "Trading Day" means a day
on which securities traded on the national securities exchange or quotation
system or in the over-the-counter market used to determine the Closing Price.
Payment of the Subscription Price will be held in a segregated account to be
maintained by the Subscription and Information Agent (as hereinafter defined)
and will be applied to the purchase of Class A Common Stock as provided
herein.     
          
  For example, assuming a Record Date of December 5, 1997, the ten consecutive
Trading Day period ending on November 30, 1997, five days prior to the Record
Date, would include November 14, 17, 18, 19, 20, 21, 24, 25, 26, and 28. The
daily Closing Prices per share of the Class A Common Stock for such dates,
respectively, were: $1.563, $1.625, $1.625, $1.563, $1.563, $1.438, $1.500,
$1.375, $1.125 and $1.250. The average daily Closing Prices would be $1.463
per share, and 82% of such average daily Closing Prices would be $1.199 per
share. However, because in no event shall the Subscription Price be less than
$1.75 per share, the Subscription Price would be $1.75 per share of Class A
Common Stock.     
   
  The Subscription Price represents a [discount/premium] of   % from the
average daily closing price of $    for the Class A Common Stock as reported
on the AMEX for the ten consecutive trading day period ending five days prior
to the Record Date, and a [discount/premium] of  % from the average daily
closing price of $    for the Class A Common Stock as reported on the AMEX for
the 60 day trading period ending on     , 1997, the Record Date. There can be
no assurance that the Class A Common Stock will trade at prices above the
Subscription Price. See "Risk Factors--Market Risks Associated with the Class
A Common Stock."     
 
  The Subscription Price was determined through arm's-length negotiation
between the Special Committee and CGE and has been approved and adopted by the
Company's Board of Directors. In making this determination, the material
factors considered by the Company were the amount of proceeds that the Company
needs to raise, the average market price of the Class A Common Stock, the
intrinsic value of the Class A Common Stock, the exchange price for the Series
A Preferred Stock, the pro rata nature of the offering and pricing policies
customary for transactions of this type. The Subscription Price should not be
considered an indication of the actual value of the Company or the Class A
Common Stock.
 
NO BOARD OR SPECIAL COMMITTEE RECOMMENDATION
 
  An investment in the Class A Common Stock and the Warrants must be made
pursuant to each investor's evaluation of such investor's best interests.
Accordingly, neither the Board of Directors of the Company nor the Special
Committee makes any recommendation to Rights holders regarding whether they
should exercise their Rights.
 
METHOD OF SUBSCRIPTION--EXERCISE OF RIGHTS
   
  The Basic Subscription Privilege and the Oversubscription Privilege may be
exercised by delivering to     (the "Subscription and Information Agent"), at
or prior to 5:00 p.m., New York City time, on the Expiration Date, the
properly completed and executed Rights Certificate or Rights Certificates
evidencing such     
 
                                      106
<PAGE>
 
   
Rights with any signatures required to be guaranteed so guaranteed, together
with payment in full of the Subscription Price for each Underlying Share
subscribed for pursuant to the Basic Subscription Privilege and the
Oversubscription Privilege. Payment of the Subscription Price will be held in
a segregated account to be maintained by the Subscription and Information
Agent. All payments must be made in U.S. dollars for the full number of shares
being subscribed for (a) by check or bank draft drawn upon a U.S. bank or
postal or express money order payable to    , as Subscription and Information
Agent, or (b) by wire transfer of same-day funds, to the account maintained by
the Subscription and Information Agent for purposes of accepting subscriptions
in the Rights Offering at     ABA No.      , Acct. No.    , (the "Subscription
Account"). Payments will be deemed to have been received by the Subscription
and Information Agent only upon (i) clearance of any uncertified check, (ii)
receipt by the Subscription and Information Agent of any certified check or
bank draft upon a U.S. bank or of any postal or express money order or (iii)
receipt of collected funds in the Subscription and Information Agent's account
designated above. IF PAYING BY UNCERTIFIED PERSONAL CHECK, PLEASE NOTE THAT
THE FUNDS PAID THEREBY MAY TAKE AT LEAST FIVE BUSINESS DAYS TO CLEAR.
ACCORDINGLY, RIGHTS HOLDERS WHO WISH TO PAY THE SUBSCRIPTION PRICE BY MEANS OF
UNCERTIFIED PERSONAL CHECK ARE URGED TO MAKE PAYMENT SUFFICIENTLY IN ADVANCE
OF THE EXPIRATION DATE TO ENSURE THAT SUCH PAYMENT IS RECEIVED AND CLEARS BY
SUCH DATE AND ARE URGED TO CONSIDER PAYMENT BY MEANS OF CERTIFIED OR CASHIER'S
CHECK, MONEY ORDER OR WIRE TRANSFER OF FUNDS.     
   
  The Rights Certificate and payment of the Subscription Price or, if
applicable, Notices of Guaranteed Delivery, as defined below, must be
delivered to the Subscription and Information Agent by one of the methods
described below:     
 
    by Mail:
 
    by Hand:
 
    by Overnight Courier:
       
    Telephone Number for Confirmation:     
 
  Delivery to an address other than those above does not constitute valid
delivery.
   
  The Company will pay all fees and expenses of the Subscription and
Information Agent and has also agreed to indemnify the Subscription and
Information Agent from certain liabilities which it may incur in connection
with the Rights Offering. All commissions, fees and other expenses (including
brokerage commissions and transfer taxes) incurred in connection with the
purchase, sale or exercise of Rights will be for the account of the transferor
of the Rights, and none of such commissions, fees or expenses will be paid by
the Company or the Subscription and Information Agent.     
   
  If a Rights holder wishes to exercise Rights, but time will not permit such
holder to cause the Rights Certificate or Rights Certificates evidencing such
Rights to reach the Subscription and Information Agent on or prior to the
Expiration Date, such Rights may nevertheless be exercised if all of the
following conditions (the "Guaranteed Delivery Procedures") are met:     
     
    (i) the Rights holder has caused payment in full of the Subscription
  Price for each Underlying Share being subscribed for pursuant to the Basic
  Subscription Privilege and the Oversubscription Privilege to be received
  (in the manner set forth above) by the Subscription and Information Agent
  on or prior to the Expiration Date;     
 
                                      107
<PAGE>
 
     
    (ii) the Subscription and Information Agent receives, on or prior to the
  Expiration Date, a guarantee notice ("Notice of Guaranteed Delivery"),
  substantially in the form provided with the instructions as to use of Air &
  Water Technologies Corporation Rights Certificates (the "instructions")
  distributed with the Rights Certificates, from a member firm of a
  registered national securities exchange or a member of the National
  Association of Securities Dealers, Inc. ("NASD"), or from a commercial bank
  or trust company having an office or correspondent in the United States or
  from a bank, stockbroker, savings and loan association or credit union with
  membership in an approved signature guarantee medallion program, pursuant
  to Rule 17Ad-15 of the Exchange Act (each, an "Eligible Institution"),
  stating the name of the exercising Rights holder, the number of Rights
  represented by the Rights Certificate or Rights Certificates held by such
  exercising Rights holder, the number of Underlying Shares being subscribed
  for pursuant to the Basic Subscription Privilege and the number of
  Underlying Shares, if any, being subscribed for pursuant to the
  Oversubscription Privilege, and guaranteeing the delivery to the
  Subscription and Information Agent of any properly completed and executed
  Rights Certificate or Rights Certificates evidencing such Rights within
  three (3) business days following the date of the Notice of Guaranteed
  Delivery; and     
     
    (iii) the properly completed Rights Certificate or Rights Certificates
  evidencing the Rights being exercised, with any signatures required to be
  guaranteed so guaranteed, is received by the Subscription and Information
  Agent within three (3) business days following the date of the Notice of
  Guaranteed Delivery. The Notice of Guaranteed Delivery may be delivered to
  the Subscription and Information Agent in the same manner as Rights
  Certificates at the address set forth above, or may be transmitted to the
  Subscription and Information Agent by facsimile transmission (Telecopy No.:
     ). Additional copies of the form of Notice of Guaranteed Delivery are
  available upon request from the Subscription and Information Agent.     
   
  Funds received in payment of the Subscription Price for Excess Shares
subscribed for pursuant to the Oversubscription Privilege will be held in a
segregated account to be maintained by the Subscription and Information Agent
pending issuance of such Excess Shares. If the aggregate Subscription Price
paid by an exercising Rights holder is insufficient to purchase the number of
Underlying Shares that the Rights holder indicates are being subscribed for,
or if no number of Underlying Shares to be purchased is specified, then the
Rights holder will be deemed to have exercised the Basic Subscription
Privilege to purchase Underlying Shares to the full extent of the payment
tendered. If the aggregate Subscription Price paid by an exercising Rights
holder exceeds the amount necessary to purchase the number of Underlying
Shares for which the Rights holder has indicated an intention to subscribe
(such excess being the "Subscription Excess"), then the Rights holder will be
deemed to have exercised the Oversubscription Privilege to the full extent of
the excess payment tendered, to purchase, to the extent available, that number
of whole shares of Class A Common Stock, subject to the Company's obligation
to issue shares of Class B Common Stock in certain circumstances, equal to the
quotient obtained by dividing the Subscription Excess by the Subscription
Price. Any remaining amount shall be returned to such Rights holder by mail
without interest or deduction as soon as practicable after the Expiration Date
and after all prorations and adjustments contemplated by the terms of the
Rights Offering have been effected.     
   
  Unless a Rights Certificate (i) provides that the shares to be issued
pursuant to the exercise of Rights represented thereby are to be delivered to
the Recordholder of such Rights or (ii) is submitted for the account of an
Eligible Institution, signatures on such Rights Certificate must be guaranteed
by an Eligible Institution or other eligible guarantor institution which is a
member of or a participant in a medallion guarantee program acceptable to the
Subscription and Information Agent. A Rights holder may request any Rights
Certificate held by it to be split into such smaller denominations as it
wishes, provided that the Rights Certificate is received by the Subscription
and Information Agent, properly endorsed, no later than 11:00 a.m., New York
City time, on     , 1998.     
 
  Persons holding shares of Class A Common Stock beneficially and receiving
the Rights distributable with respect thereto, through a broker, dealer,
commercial bank, trust company or other nominee, as well as persons holding
certificates of Class A Common Stock directly who would prefer to have such
institutions effect transactions relating to the Rights on their behalf,
should contact the appropriate institution or nominee and
 
                                      108
<PAGE>
 
   
request it to effect the transactions for them. If a beneficial owner wishes
to obtain a separate Rights Certificate, such beneficial owner should contact
the nominee as soon as possible and request that a separate Rights Certificate
be issued.     
   
  The instructions accompanying the Rights Certificates should be read
carefully and followed in detail. RIGHTS CERTIFICATES SHOULD BE SENT WITH
PAYMENT TO THE SUBSCRIPTION AND INFORMATION AGENT. DO NOT SEND RIGHTS
CERTIFICATES TO THE COMPANY.     
   
  THE METHOD OF DELIVERY OF RIGHTS CERTIFICATES AND PAYMENT OF THE
SUBSCRIPTION PRICE TO THE SUBSCRIPTION AND INFORMATION AGENT WILL BE AT THE
ELECTION AND RISK OF THE RIGHTS HOLDER, BUT IF SENT BY MAIL, IT IS RECOMMENDED
THAT SUCH CERTIFICATES AND PAYMENTS BE SENT BY REGISTERED MAIL, PROPERLY
INSURED, WITH RETURN RECEIPT REQUESTED, AND THAT A SUFFICIENT NUMBER OF DAYS
BE ALLOWED TO ENSURE DELIVERY TO THE SUBSCRIPTION AND INFORMATION AGENT AND
THE CLEARANCE OF PAYMENT PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE
EXPIRATION DATE. BECAUSE UNCERTIFIED PERSONAL CHECKS MAY TAKE AT LEAST FIVE
BUSINESS DAYS TO CLEAR, YOU ARE STRONGLY URGED TO PAY, OR ARRANGE FOR PAYMENT,
BY MEANS OF CERTIFIED OR CASHIER'S CHECK, MONEY ORDER OR WIRE TRANSFER OF
FUNDS.     
   
  All questions concerning the timeliness, validity, form and eligibility of
any exercise of Rights will be determined by the Company, whose determinations
will be final and binding. The Company in its sole discretion may waive any
defect or irregularity, or permit a defect or irregularity to be corrected
within such time as it may determine, or reject the purported exercise of any
Right. Subscriptions will not be deemed to have been received or accepted
until all irregularities have been waived or cured within such time as the
Company determines in its sole discretion. Neither the Company nor the
Subscription and Information Agent will be under any duty to give notification
of any defect or irregularity in connection with the submission of Rights
Certificates or incur any liability for failure to give such notification.
    
          
  Any questions or requests for assistance concerning the method of exercising
Rights or requests for additional copies of this Prospectus, the Instructions
or the Notice of Guaranteed Delivery should be directed to the Subscription
and Information Agent,     , at the address and telephone number set forth
above.     
 
NO REVOCATION
 
  ONCE A HOLDER OF RIGHTS HAS EXERCISED THE BASIC SUBSCRIPTION PRIVILEGE OR
THE OVERSUBSCRIPTION PRIVILEGE, SUCH EXERCISE MAY NOT BE REVOKED. RIGHTS NOT
EXERCISED PRIOR TO THE EXPIRATION DATE WILL EXPIRE.
 
PROCEDURES FOR BOOK ENTRY TRANSFER FACILITY PARTICIPANTS
          
  In the case of Rights that are held of record through the Depository Trust
Company or the Philadelphia Depositary Trust Company (each, a "Book-Entry
Transfer Facility"), exercises of the Basic Subscription Privilege and the
Oversubscription Privilege may be effected by instructing the Book-Entry
Transfer Facility to transfer Rights from the Book-Entry Facility account of
such holder to the Book-Entry Transfer Facility account of the Subscription
and Information Agent, together with certification as to the aggregate number
of Rights exercised and the number of Underlying Shares thereby subscribed for
pursuant to the Basic Subscription Privilege and the Oversubscription
Privilege by each beneficial owner of Rights on whose behalf such nominee is
acting, and payment of the Subscription Price for each share of Class A Common
Stock (subject to the Company's obligation to issue Class B Common Stock in
certain circumstances) subscribed for pursuant to the Basic Subscription
Privilege and Oversubscription Privilege.     
 
EFFECTS OF RIGHTS OFFERING ON OTHER SECURITIES AND STOCK OPTIONS OF THE
COMPANY AND COMPANY PLANS
 
  The number of shares covered by certain stock options and the option prices
thereunder are subject to adjustment in accordance with the provisions
thereof. The Company's stock option plan or, in certain cases, the
 
                                      109
<PAGE>
 
stock option agreements evidencing awards made thereunder, require the
Compensation Committee of the Board of Directors to make appropriate
adjustments to the outstanding options or other awards in the event of any
split-ups, stock dividends, recapitalizations, mergers, consolidations,
combination, exchanges of shares and the like (each an "Adjustment Event").
The Compensation Committee, whose determination shall be conclusive, has
discretion to determine the nature and extent of the adjustments to be made in
order to make the outstanding options or awards, immediately after such
Adjustment Event, equivalent to such options or awards immediately prior to
such Adjustment Event.
 
  The Compensation Committee will meet to determine whether the Rights
Offering is an Adjustment Event and if so, what adjustment to make.
 
FOREIGN AND CERTAIN OTHER STOCKHOLDERS
   
  Rights Certificates will not be mailed to Holders whose addresses are
outside the United States or who have an APO or FPO address, but will be held
by the Subscription and Information Agent for their accounts. To exercise such
Rights, such holders must notify the Subscription and Information Agent, and
must take all other steps which are necessary to exercise the Rights on or
prior to 11:00 a.m., New York City time, on    , 1998. If the procedures set
forth in the preceding sentence are not followed prior to the Expiration Date,
the Rights will expire.     
 
OTHER MATTERS
   
  The Rights Offering is not being made in any state or other jurisdiction in
which it is unlawful to do so, nor is the Company selling or accepting any
offers to purchase any shares of Class A Common Stock, subject to the
Company's obligation to issue Class B Common Stock in certain circumstances,
from Rights holders who are residents of any such state or other jurisdiction.
The Company may delay the commencement of the Rights Offering in certain
states or other jurisdictions, or change the terms of the Rights Offering, in
order to comply with the securities law requirements of such states or other
jurisdictions. It is not anticipated that there will be any changes in the
terms of the Rights Offering. If any such change is made that is material and
has an adverse effect on any holder that has previously exercised Rights, such
holder will be provided the opportunity to revoke such exercise. The Company,
if it so determines in its sole discretion, may decline to make modifications
to the terms of the Rights Offering requested by certain states or other
jurisdictions, in which event Rights holders resident in those states or
jurisdictions will not be eligible to participate in the Rights Offering.     
 
                                      110
<PAGE>
 
                            DESCRIPTION OF WARRANTS
 
  The Warrants will be issued pursuant to a warrant agreement (the "Warrant
Agreement") by and between the Company and       as warrant agent (the
"Warrant Agent"). The following summary of certain provisions of the Warrant
Agreement and the Warrants does not purport to be complete and is qualified in
its entirety by reference to the Warrant Agreement and the Warrants, including
the definitions therein of certain terms. The Warrant Agreement will be
substantially in the form of the Warrant Agreement filed as an exhibit to the
Registration Statement of which this Prospectus is a part.
 
GENERAL
 
  The Company has available for issue up to 10,000,000 Warrants, which when
exercised, would entitle the holders thereof to purchase, in the aggregate, up
to 10,000,000 shares of Class A Common Stock. The Company will issue that
percentage of 10,000,000 Warrants equivalent to the percentage of the total
number of Underlying Shares purchased by the Public in the Rights Offering
relative to the total number of Underlying Shares issuable upon full exercise
of Rights by the Public in the Rights Offering. See "The Rights Offering--The
Rights."
 
  The Company will issue to each Public subscriber in the Rights Offering such
number of Warrants to purchase shares of Class A Common Stock equal to the
product of the Warrant Pool multiplied by a fraction the numerator of which is
the total number of Underlying Shares purchased by such holder in the Rights
Offering and the denominator is the total number of Underlying Shares
purchased by all Public subscribers in the Rights Offering.
 
  Each Warrant, when exercised, will entitle the holder thereof to acquire, at
any time from time to time prior to the Warrant Expiration Date, one Warrant
Share at an exercise price of $2.50 per share. The Warrant Exercise Price was
determined through arm's-length negotiation between CGE and the Special
Committee. The Warrant Exercise Price represents a premium of approximately
66.7% over the last sale price of the Class A Common Stock on the AMEX on the
last trading day immediately prior to the announcement of the Recapitalization
and a premium of approximately  % over the Subscription Price. The Warrant
Exercise Price and the number of Warrant Shares issuable on exercise of a
Warrant are both subject to adjustment in certain cases referred to below. The
Warrants are exercisable only if a registration statement relating to the
Warrant Shares is then in effect, or the exercise is exempt from the
registration requirements of the Securities Act and such securities are
qualified for sale or exempt from qualification under the applicable state
blue sky laws. Unless exercised, the Warrants will expire on the Warrant
Expiration Date which is three years from the date of issuance.
   
  The Warrants may be exercised at any time by surrendering to the Company at
the office of the Warrant Agent the Warrant certificates evidencing such
Warrants with the accompanying form of election to purchase properly completed
and executed, together with payment of the Warrant Exercise Price. Payment of
the Warrant Exercise Price may be made in the form of cash or a certified or
official bank check payable to the order of the Company or upon the surrender
of additional Warrants. Upon surrender of the Warrant certificate and payment
of the Warrant Exercise Price, the Warrant Agent will deliver or cause to be
delivered, to or upon the written order of such holder, a stock certificate
representing the number of whole Warrant Shares or other securities or
property to which such holder is entitled under the Warrant Agreement and the
Warrants. If less than all of the Warrants evidenced by a Warrant certificate
are to be exercised, a new Warrant certificate will be issued for the
remaining number of Warrants.     
 
  No fractional Warrant Share will be issued upon exercise of the Warrants. If
any fraction of a Warrant Share would, except for the foregoing provision, be
issuable on the exercise of any Warrants (or a specified portion thereof), the
Company shall pay an amount in cash equal to the current market price per
Warrant Share, as determined on the day immediately preceding the date the
Warrant is presented for exercise, multiplied by such fraction, computed to
the nearest whole U.S. cent; provided that Warrant holders may elect to
purchase full shares of Class A Common Stock by delivering an appropriate
amount of cash.
 
                                      111
<PAGE>
 
  Certificates for Warrants will be issued in registered form only, and no
service charge will be made for registration of transfer or exchange upon
surrender of any Warrant certificate at the office of the Warrant Agent
maintained for that purpose. The Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration, transfer or exchange of Warrant
certificates.
 
  Warrant holders will not, by virtue of being such holders, have any rights
as stockholders of the Company. Warrant holders have no right to vote on
matters submitted to the stockholders of the Company and have no right to
receive dividends. Warrant holders are not entitled to share in the assets of
the Company in the event of liquidation, dissolution or winding up of the
Company's affairs.
 
  In the event of taxable distribution to holders of Class A Common Stock
which results in an adjustment to the number of Warrant Shares or other
consideration for which a Warrant may be exercised, Warrant holders may, in
certain circumstances, be deemed to have received a distribution subject to
United States federal income tax as a dividend. See "Certain Federal Income
Tax Considerations."
 
ADJUSTMENTS
   
  The number of shares of Class A Common Stock purchasable upon the exercise
of the Warrants and the Warrant Exercise Price both will be subject to
adjustment in certain events (subject to certain exceptions) including (i) the
payment by the Company of dividends (and other distributions) on Class A
Common Stock payable in Class A Common Stock or other shares of the Company's
capital stock, (ii) subdivisions, combinations, exchanges, split-ups and
reclassifications of Class A Common Stock, (iii) the issuance of rights,
options or warrants to subscribe for Class A Common Stock or of securities
convertible into or exchangeable for Class A Common Stock, for a consideration
per share of Class A Common Stock which is less than the current market price
per share of Class A Common Stock and (iv) the distribution to all holders of
Class A Common Stock of any of the Company's assets.     
 
  No adjustment in the Warrant Exercise Price will be required unless such
adjustment would require an increase or decrease of at least one percent (1%)
in the Warrant Exercise Price; provided, however, that any adjustment which is
not made will be carried forward and taken into account in any subsequent
adjustment.
 
  If the Company consolidates or merges with or into, or transfers or leases
all or substantially all of its assets to, any person, upon consummation of
such transaction, the Warrants will automatically become exercisable for the
kind and amount of securities, cash or other assets which the Warrant holder
would have owned immediately after the consolidation, merger, transfer or
lease if the holder had exercised the Warrant immediately before the effective
date of the transaction. No such consolidation, merger, transfer or lease will
be effected unless the successor company, if other than the Company, assumes
by written instrument the obligation to issue securities, cash or other assets
as aforesaid.
 
REGISTRATION OF WARRANT SHARES
 
  Warrant holders will be able to exercise their Warrants only if a
registration statement relating to the Warrant Shares is then in effect, or
the exercise of such Warrants is exempt from the registration requirements of
the Securities Act and such securities are qualified for sale or exempt from
qualification under the applicable state blue sky laws. Subject to Black Out
Periods, at such time as the average daily Closing Price of the Class A Common
Stock is greater than or equal to 85% of the Warrant Exercise Price ($2.125)
for twenty consecutive Trading Days, the Company will prepare, file and use
its best efforts to cause to become effective a registration statement in
respect of all of the Warrant Shares and the Company will use its commercially
reasonable efforts to keep such registration statement continuously effective
under the Securities Act in order to permit the prospectus included therein to
be lawfully delivered. Notwithstanding the foregoing, the Company will not be
required to amend or supplement the registration statement, any related
prospectus or any document incorporated therein by reference, for a period (a
"Black Out Period") not to exceed the shorter of (x) the period ending on
 
                                      112
<PAGE>
 
the date the information responsible for the Black Out Period is disclosed to
the public and (y) 60 days (provided that no two Black Out Periods will occur
during any period of 135 consecutive days) in the event that (i) an event
occurs and is continuing as a result of which the registration statement, any
related prospectus or any document incorporated therein by reference as then
amended or supplemented would, in the Company's good faith judgment, contain
an untrue statement of a material fact or omit to state a material fact
necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading, and (ii)(A) the
Company determines in its good faith judgment that the disclosure of such
event at such time would have a material adverse effect on the business,
operations or prospects of the Company or (B) the disclosure otherwise relates
to a material business transaction which has not yet been publicly disclosed;
provided that no Black Out Period may be in effect during the six months prior
to the Warrant Expiration Date and there will be no more than three Black Out
Periods during the term of the Warrants. See "Risk Factors--Ability to
Exercise Warrants."
 
TRANSFER RESTRICTIONS; LISTING
 
  The Warrants will be freely transferrable and freely tradable. The Company
will use its commercially reasonable efforts to secure the listing of the
Warrants and the Warrant Shares upon each national securities exchange or
automated quotation system, if any, upon which the shares of Class A Common
Stock are then listed and will use its commercially reasonable efforts to
maintain such listing, so long as any other shares of Class A Common Stock
will be so listed or quoted. See "Description of Warrants--Transfer
Restrictions; Listing" and "Risk Factors--No Prior Market for the Rights or
Warrants."
 
AUTHORIZED SHARES
 
  The Company has authorized for issuance such number of shares of Class A
Common Stock as shall be issuable upon the full exercise of all outstanding
Warrants. The Company is required to reserve a sufficient number of authorized
shares of Class A Common Stock to permit the exercise of all the Warrants
issued. Such shares of Class A Common Stock, when paid for and issued, will be
duly and validly issued, fully paid and non-assessable, free of preemptive
rights and free from all taxes, liens, charges and security interests with
respect to the issue thereof (other than any such tax, lien, charge or
security interest imposed upon or granted by the holder of the Class A Common
Stock).
 
AMENDMENT
 
  From time to time, the Company and the Warrant Agent, without the consent of
the Warrant holders, may amend or supplement the Warrant Agreement for certain
purposes, including curing defects or inconsistencies or making changes that
do not materially adversely affect the rights of any holder. Any amendment or
supplement to the Warrant Agreement that has a material adverse effect on the
interests of the Warrant holders shall require the written consent of the
holders of a majority of the then outstanding Warrants (excluding Warrants
held by the Company or any of its affiliates). The consent of each holder of
the Warrants affected shall be required for any amendment pursuant to which
the Warrant Exercise Price would be increased or the number of Warrant Shares
purchasable upon exercise of Warrants would be decreased (other than pursuant
to adjustments provided in the Warrant Agreement).
 
GOVERNING LAW
 
  The Warrant Agreement and the Warrants will be governed by, and construed in
accordance with, the laws of the State of New York without regard to the
principles of conflicts of law thereof.
 
                                      113
<PAGE>
 
                         DESCRIPTION OF CAPITAL STOCK
 
  The following general summary of the capital stock summarizes certain
material elements of the Company's Restated Certificate of Incorporation, as
amended (the "Certificate of Incorporation"). Such summary is not necessarily
complete and is qualified in its entirety by reference to the Certificate of
Incorporation, a copy of which is on file with the Commission. See "Available
Information."
 
  The Company is authorized by the Certificate of Incorporation to issue
100,000,000 shares of Common Stock, par value $.001 per share, and 2,500,000
shares of preferred stock, par value $.01 per share (the "Preferred Stock").
As of    , 1997,     shares of Class A Common Stock were issued and
outstanding. Pursuant to the Exchange, the Company exchanged all of the
outstanding shares of Series A Preferred Stock for     shares of Class A
Common Stock. See "The Recapitalization--The Exchange."
   
  There are currently insufficient shares of Class A Common Stock authorized
to permit issuance of Class A Common Stock upon the exercise of Rights or
Warrants. In order to consummate the Recapitalization, as soon as reasonably
practicable, the Company, acting through the Board, has agreed to duly approve
and adopt an amendment to the Company's Certificate of Incorporation (i) to
increase the number of shares of Common Stock that the Company is authorized
to issue from 100,000,000 shares to 260,000,000 shares, of which 230,000,000
shares would be Class A Common Stock and 30,000,000 shares would be Class B
Common Stock and (ii) to amend the conversion rights of the holders of the
Company's Class B Common Stock to provide for automatic conversion of shares
of Class B Common Stock into Class A Common Stock immediately upon the earlier
of August 1, 2000 or seventy-five days following the termination of the Change
of Control Provision. In addition, CGE and Anjou, the holders of a majority of
the voting power of the Company, have agreed to provide their written consent
for the requisite approval of the Company's stockholders in respect of such
amendments to the Certificate of Incorporation. See "Risk Factors--
Insufficient Authorized Capital to Permit Exercise of Rights and Warrants."
    
VOTING RIGHTS AND POWERS
 
  Holders of issued and outstanding shares of Class A Common Stock are
entitled to one vote for each share they hold. Holders of Series A Preferred
Stock are entitled to that number of votes equal to the number of votes to
which the shares of Class A Common Stock issuable upon conversion of such
shares of Series A Preferred Stock would have been entitled if such shares of
Class A Common Stock had been outstanding on the record date. In addition, the
Series A Preferred Stock votes separately as a class on any amendments to the
Certificate of Incorporation or By-Laws of the Company, whether by merger,
consolidation, combination, reclassification or otherwise, which would alter
or circumvent the voting powers, rights and preferences of the Series A
Preferred Stock. No amendment or alteration of the dividends payable,
liquidation preference or par value of the Series A Preferred Stock may be
effected without the consent of each holder of Series A Preferred Stock.
Following the Exchange, there are currently no issued and outstanding shares
of Series A Preferred Stock.
 
DIVIDENDS
 
  Holders of the Class A Common Stock are entitled to receive dividends as may
from time to time be declared by the Board of Directors of the Company. The
Company has not paid cash dividends on the Class A Common Stock in recent
years, and does not expect to pay dividends in the foreseeable future. In
addition, the Bank Credit Facility prohibits the Company from declaring or
paying cash dividends on the Class A Common Stock.
 
  The holders of shares of the Series A Preferred Stock are entitled to
receive, when, as and if declared by the Board of Directors, out of funds
legally available therefor, cumulative dividends at an annual rate of $2.75
per share, payable in cash quarterly in arrears in equal amounts on March 31,
June 30, September 30 and December 31 of each year (each a "Dividend Payment
Date"). Holders of the Series A Preferred Stock are entitled to receive all
accrued dividends in preference to and priority over dividends on the Class A
Common Stock, and no distribution in respect of the Class A Common Stock and
no redemption, purchase, retirement or acquisition for value of the Class A
Common Stock may occur, or money be set apart therefor, unless all
 
                                      114
<PAGE>
 
dividends accrued on the Preferred Stock through the immediately preceding
Dividend Payment Date have been declared and paid.
 
RANKING; LIQUIDATION PREFERENCES
 
  The Class A Common Stock ranks junior to the Series A Preferred Stock with
respect to dividend rights and rights on liquidation, winding up and
dissolution. In the event of any voluntary or involuntary liquidation,
dissolution or winding up of the affairs of the Company, holders of shares of
the Preferred Stock will be entitled to be paid out of the assets of the
Company available for distribution to its stockholders an amount in cash equal
to $50.00 for each share outstanding, plus accrued and unpaid dividends
thereon to the date fixed for liquidation, dissolution or winding up, whether
or not declared to the date of such payment, before any payment shall be made
or any assets distributed to the holders of the Common Stock.
 
CLASS B COMMON STOCK
 
  Following effectiveness of the Charter Amendment, the Class B Common Stock
will be identical in all respects except that (i) the Class B Common Stock
will not be entitled to vote and (ii) the Class B Common Stock will
automatically convert into Class A Common Stock immediately upon the earlier
of August 1, 2000 or seventy-five days following the termination of the Change
of Control Provision.
 
CONVERSION OF CONVERTIBLE DEBENTURES
 
  Currently $115 million principal amount of Convertible Debentures of the
Company are outstanding. Any Convertible Debenture or any portion of the
principal amount thereof which is $1,000 or an integral multiple of $1,000 may
be converted into shares of Class A Common Stock at a conversion price of
$30.00 per share, subject to adjustments. As a result of the Rights Offering,
the conversion price for such Convertible Debentures will be $   per share.
 
  The beneficial ownership by a person of 75% or more of the outstanding
voting securities of the Company following the Rights Offerings could permit
the holders of the Convertible Debentures to require the Company to redeem
outstanding Convertible Debentures following the Rights Offering at a
redemption price of 100% of the principal amount, together with accrued
interest to the redemption date. At the option of the Company, if such put
right is triggered and exercised, the Company may repurchase such Convertible
Debentures with a cash payment or by delivery of shares of Class A Common
Stock. See "Risk Factors--Change of Control Provision of Convertible
Debentures." The Convertible Debentures are redeemable in whole or in part at
the option of the Company for cash at a redemption price of 102.4% of the
principal amount in 1997 reducing to 100% of the principal amount in 2000,
together with accrued interest to the redemption date. The Convertible
Debentures require equal annual sinking fund payments beginning May 15, 2000,
which are calculated to retire 75% of the Convertible Debentures prior to
maturity.
 
  Prior to or concurrently with the consummation of the Rights Offering and in
connection with the Recapitalization, the Company has agreed to conduct a
Consent Solicitation to seek the consent of the holders of not less than a
majority in aggregate principal amount of the Convertible Debentures
outstanding in order to delete Section 1501 from the Indenture governing such
Convertible Debentures. See "The Recapitalization-- Consent Solicitation;
Issuance of Class B Common Stock."
 
CLASS A COMMON STOCK OUTSTANDING AFTER RECAPITALIZATION
 
  CGE received approximately     shares of Class A Common Stock in the
Exchange. In addition, approximately     shares of Class A Common Stock will
be issued to Rights holders in connection with the Rights Offering assuming
exercise of all Rights. Based on the     shares of Class A Common Stock
outstanding as of     , 1997, the issuance of such shares would result (on a
pro forma basis as of such date) in a  % increase in the amount of Class A
Common Stock.
 
  The outstanding shares of the Class A Common Stock are listed on the AMEX
under the symbol "AWT".
 
  The transfer agent and registrar for the Class A Common Stock is First
Chicago Trust Company of New York.
 
                                      115
<PAGE>
 
             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES
   
  The following summary sets forth the material United States federal income
tax consequences of the receipt, ownership, exercise and disposition of the
Rights and the Warrants, and of the receipt, ownership, and disposition of
Warrant Shares, to the United States holders described herein under present
law. This summary is based on the Internal Revenue Code of 1986, as amended to
the date hereof (the "Code"), administrative pronouncements, judicial
decisions and existing and proposed Treasury Regulations, changes to any of
which subsequent to the date of this Prospectus may affect the tax
consequences described herein, possibly on a retroactive basis. This summary
does not discuss all aspects of United States federal income taxation that may
be relevant to a particular investor or to certain types of investors subject
to special treatment under the United States federal income tax laws (for
example, persons deemed to hold directly or indirectly 10% or more of
Company's stock, banks, dealers in securities, life insurance companies, tax
exempt organizations foreign taxpayers or persons holding the Company's stock
as part of a straddle or conversion transaction), nor does it discuss any
aspect of state, local or foreign income or other tax laws. This discussion is
limited to United States holders of Class A Common Stock who hold such stock
as a capital asset.     
 
THE RIGHTS
 
  Holders of Class A Common Stock will not recognize taxable income in
connection with the receipt or exercise of the Rights and, except as provided
in the following sentence, the basis of the Rights received by a stockholder
as a distribution with respect to such stockholder's Class A Common Stock will
accordingly be zero. If either (i) the fair market value of the Rights on the
date of issuance is 15% or more of the fair market value (on the date of
issuance) of the Class A Common Stock with respect to which they are received
or (ii) the stockholder elects, in his or her federal income tax return for
the taxable year in which the Rights are received, to allocate part of the
basis of such Class A Common Stock to the Rights, then upon exercise or
transfer of the Rights, the stockholder's basis in such Class A Common Stock
will be allocated between the Class A Common Stock and the Rights in
proportion to the fair market values of each on the date of Issuance. The
holding period of a stockholder with respect to the Rights received as a
distribution on such stockholder's Class A Common Stock will include the
stockholder's holding period for the Class A Common Stock with respect to
which the Rights were issued.
   
  A stockholder who sells Rights received in the Rights Offering prior to
exercise will recognize capital gain or loss equal to the difference between
the sale proceeds and such stockholder's basis (if any) in the Rights sold. In
the case of certain non-corporate taxpayers, any such capital gain generally
will be subject to a maximum U.S. Federal income tax rate of (i) 28% if such
beneficial holder's holding period is more than 12 months but not more than 18
months and (ii) 20% if such holding period is more than 18 months. The
distinction between capital gain or loss and ordinary income is also relevant
for purposes of, among other things, limitations on the deductibility of
capital losses.     
 
  Stockholders who allow the Rights received by them in the Rights Offering to
lapse will not recognize any gain or loss, and no adjustment will be made to
the basis of the Class A Common Stock, if any, owned by such holders of the
Rights.
 
  Rights holders will not recognize any gain or loss upon the exercise of such
Rights. The aggregate basis of the Class A Common Stock and Warrants acquired
through exercise of the Rights will be equal to the sum of the Subscription
Price therefor and the Rights holder's basis in such Rights (if any) as
described above. Such aggregate basis will be allocated between such Class A
Common Stock and Warrants based upon their respective fair market values at
the time such Rights are exercised. The holding period for the Class A Common
Stock acquired through exercise of the Rights will begin on the date the
Rights are exercised.
 
THE WARRANTS
 
  Upon the exercise of a Warrant, a Warrant holder will not recognize gain or
loss (except to the extent of cash, if any, received in lieu of the issuance
of fractional shares) and will have a tax basis in the Warrant Shares acquired
(including fractional Warrant Shares in lieu of which cash is received)
pursuant to such exercise equal
 
                                      116
<PAGE>
 
   
to such holder's tax basis in the exercised Warrant (which, in the case of an
initial holder, will equal the portion of the Subscription Price properly
allocable to such Warrant, as described above, plus the Warrant Exercise
Price). The holding period of such Warrant Shares so acquired will commence on
the day after the date of exercise of the Warrant. If any cash is received in
lieu of fractional shares, the Warrant holder will recognize gain or loss, the
amount and character of which will be determined as if such holder had
received such fractional shares and then immediately had them redeemed by the
Company for cash. Similarly, upon the sale of Warrant Shares received upon
exercise of a Warrant, a Warrant holder will generally recognize capital gain
or loss equal to the difference between the amount realized upon the sale and
such holder's tax basis in the Warrant Shares. In the case of certain non-
corporate taxpayers, any such capital gain generally will be subject to a
maximum U.S. Federal income tax rate of (i) 28% if such beneficial holder's
holding period is more than 12 months but not more than 18 months and (ii) 20%
if such holding period is more than 18 months. The distinction between capital
gain or loss and ordinary income is also relevant for purposes of, among other
things, limitations on the deductibility of capital losses. Warrant holders
should consult with their own tax advisors with respect to the particular
federal, state, local and foreign tax consequences to them of the ownership of
Warrants or Warrant Shares.     
   
  The sale of a Warrant will generally result in the recognition of capital
gain or loss to the Warrant holder in an amount equal to the difference
between the amount realized and such holder's tax basis in the Warrant (which,
in the case of an initial Warrant holder, will equal the portion of the
Subscription Price properly allocable to the Warrant, as described above).
       
  If a Warrant expires unexercised, a Warrant holder will recognize a capital
loss equal to such holder's tax basis in the Warrant.     
 
  Under Section 305 of the Code, adjustments to the exercise price or
conversion ratio of the Warrants which may occur under certain circumstances,
or the failure to make such adjustments, may result in the receipt of taxable
constructive dividends by a Warrant holder to the extent of the Company's
current or accumulated earnings and profits, regardless of whether there is a
distribution of cash or property.
 
  THE FOREGOING SUMMARY IS INCLUDED FOR GENERAL INFORMATION ONLY. ACCORDINGLY,
EACH RIGHTS HOLDER IS URGED TO CONSULT WITH HIS OR HER OWN TAX ADVISOR WITH
RESPECT TO THE TAX CONSEQUENCES OF THE RIGHTS OFFERING ON HIS OR HER OWN
PARTICULAR TAX SITUATION, INCLUDING THE APPLICATION AND EFFECT OF STATE, LOCAL
AND FOREIGN INCOME AND OTHER TAX LAWS.
 
                                 LEGAL MATTERS
 
  The validity of the authorization and issuance of the securities offered
hereby is being passed upon by Douglas A. Satzger, Esq., Senior Vice
President, General Counsel and Secretary of the Company.
 
                                    EXPERTS
   
  The consolidated financial statements as of and for the years ended October
31, 1996 and 1997 included in this Prospectus and elsewhere in this
Registration Statement have been audited by McGladrey & Pullen, LLP,
independent public accountants, and are included herein in reliance upon such
report and upon the authority of said firm as experts in accounting and
auditing.     
   
  The consolidated statements of operations, stockholders' equity and cash
flows included in this Prospectus and elsewhere in this Registration Statement
for the year ended October 31, 1995 have been audited by Arthur Andersen LLP,
independent public accountants, as indicated in their report with respect
thereto, and are included herein in reliance upon the authority of said firm
as experts in accounting and auditing, in giving said report.     
 
                                      117
<PAGE>
 
                     AIR & WATER TECHNOLOGIES CORPORATION
 
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>   
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
Reports of Independent Public Accountants................................  F-2
Consolidated Balance Sheets as of October 31, 1997 and 1996..............  F-4
Consolidated Statements of Operations for the Years Ended October 31,
 1997, 1996 and 1995.....................................................  F-5
Consolidated Statements of Stockholders' Equity for the Years Ended Octo-
 ber 31, 1997, 1996 and 1995.............................................  F-6
Consolidated Statements of Cash Flows for the Years Ended October 31,
 1997, 1996 and 1995.....................................................  F-7
Notes to Consolidated Financial Statements...............................  F-8
</TABLE>    
 
                                      F-1
<PAGE>
 
                    
                 REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS     
   
To the Stockholders and Board of Directors of Air & Water Technologies Corpo-
 ration:     
   
  We have audited the accompanying consolidated balance sheets of Air & Water
Technologies Corporation and its Subsidiaries as of October 31, 1997 and 1996,
and the related consolidated statements of operations, stockholders' equity
and cash flows for the years then ended. These financial statements are the
responsibility of the Company's management. Our responsibility is to express
an opinion on these financial statements based on our audits.     
   
  We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.     
   
  In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Air & Water Technologies
Corporation and its Subsidiaries as of October 31, 1997 and 1996 and the
results of their operations and their cash flows for the years then ended in
conformity with generally accepted accounting principles.     
                                             
                                          McGladrey & Pullen, LLP     
   
New York, New York     
   
December 13, 1997     
 
                                      F-2
<PAGE>
 
                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Air & Water Technologies Corporation:
   
  We have audited the accompanying consolidated statements of operations,
stockholders' equity and cash flows of Air & Water Technologies Corporation (a
Delaware corporation) and subsidiaries for the year ended October 31, 1995.
These financial statements are the responsibility of the Company's management.
Our responsibility is to express an opinion on these financial statements
based on our audit.     
   
  We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audit provides a reasonable basis
for our opinion.     
   
  In our opinion, the consolidated statements of operations, stockholders'
equity and cash flows referred to above present fairly, in all material
respects, the results of operations and cash flows of Air & Water Technologies
Corporation and subsidiaries for the year ended October 31, 1995, in
conformity with generally accepted accounting principles.     
 
                                          Arthur Andersen LLP
 
Roseland, New Jersey
December 8, 1995
 
                                      F-3
<PAGE>
 
                      AIR & WATER TECHNOLOGIES CORPORATION
 
                          CONSOLIDATED BALANCE SHEETS
                         
                      AS OF OCTOBER 31, 1997 AND 1996     
                        
                     (IN THOUSANDS, EXCEPT SHARE DATA)     
 
<TABLE>   
<CAPTION>
                                                      OCTOBER 31,
                                                  --------------------
                                                    1997       1996
                                                  ---------  ---------
<S>                                               <C>        <C>
                     ASSETS
Current Assets:
  Cash and cash equivalents, including restricted
   cash of $413 and $849 in 1997 and 1996, re-
   spectively.................................... $  12,089  $  12,667
  Accounts receivable, less allowance for doubt-
   ful accounts of $3,300 and $1,300 in 1997 and
   1996, respectively............................    76,681     61,818
  Costs and estimated earnings in excess of
   billings on uncompleted contracts.............    33,557     37,437
  Inventories....................................     1,893      1,921
  Prepaid expenses and other current assets......     4,460      7,878
  Net current assets of discontinued operations..       --      21,410
                                                  ---------  ---------
    Total current assets.........................   128,680    143,131
                                                  ---------  ---------
Property, plant and equipment, net...............    13,388     28,890
Investments in environmental treatment facili-
 ties............................................    21,817     22,062
Goodwill, net....................................   164,337    169,578
Other assets.....................................    30,391     27,927
Net non-current assets of discontinued opera-
 tions...........................................    24,452    104,770
                                                  ---------  ---------
    Total assets................................. $ 383,065  $ 496,358
                                                  =========  =========
  LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Current liabilities:
  Current installments of long-term debt......... $     398  $     378
  Accounts payable...............................    80,007     56,914
  Accrued expenses...............................    86,681     63,921
  Billings in excess of costs and estimated
   earnings on uncompleted contracts.............    15,320     12,520
  Income taxes payable...........................     1,485      1,842
  Net current liabilities of discontinued opera-
   tions.........................................       591        --
                                                  ---------  ---------
    Total current liabilities....................   184,482    135,575
                                                  ---------  ---------
Long-term debt...................................   307,845    306,542
                                                  ---------  ---------
Commitments and contingencies (Note 13)                 --         --
Stockholders' equity (deficit):
  Preferred stock, par value $.01, authorized
   2,500,000 shares; issued 1,200,000 shares;
   liquidation value $60,000.....................        12         12
  Common stock, par value $.001, authorized
   100,000,000 shares; issued 32,109,156 shares
   ..............................................        32         32
  Additional paid-in capital.....................   427,036    427,036
  Accumulated deficit............................  (535,214)  (372,433)
  Common stock in treasury, at cost..............      (108)      (108)
  Cumulative currency translation adjustment.....    (1,020)      (298)
                                                  ---------  ---------
    Total stockholders' equity (deficit).........  (109,262)    54,241
                                                  ---------  ---------
    Total liabilities and stockholders' equity
     (deficit)................................... $ 383,065  $ 496,358
                                                  =========  =========
</TABLE>    
     
  The accompanying notes to consolidated financial statements are an integral
                    part of these financial statements.     
 
                                      F-4
<PAGE>
 
                      AIR & WATER TECHNOLOGIES CORPORATION
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
               
            FOR THE YEARS ENDED OCTOBER 31, 1997, 1996 AND 1995     
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>   
<CAPTION>
                                       YEARS ENDED OCTOBER 31,
                                    -------------------------------  
                                      1997       1996       1995
                                    ---------  ---------  ---------
<S>                                 <C>        <C>        <C>        
Sales.............................  $ 456,375  $ 482,091  $ 398,661
Cost of sales.....................    385,573    394,124    309,496
                                    ---------  ---------  ---------
    Gross margin..................     70,802     87,967     89,165
Selling, general and
 administrative expenses..........     75,755     62,316     66,697
Depreciation and amortization.....     16,861     13,983     12,279
Impairment charge.................      5,000        --         --
                                    ---------  ---------  ---------
    Operating income (loss) from
     continuing operations........    (26,814)    11,668     10,189
Interest income...................        359        923      1,113
Interest expense..................    (24,356)   (22,597)   (23,925)
Other expense, net................       (502)    (2,296)       (37)
                                    ---------  ---------  ---------
    Loss from continuing
     operations before income
     taxes .......................    (51,313)   (12,302)   (12,660)
Income tax (expense) benefit......       (514)     1,246       (587)
                                    ---------  ---------  ---------
    Loss from continuing
     operations...................    (51,827)   (11,056)   (13,247)
Discontinued operations:
Income (loss) from operations of
 discontinued segment.............    (44,854)     5,788      5,262
Loss from disposal of discontinued
 segment..........................    (63,900)       --         --
                                    ---------  ---------  ---------
    Net loss......................   (160,581)    (5,268)    (7,985)
Preferred stock dividend,
 including dividends in arrears of
 $1,100 at October 31, 1997.......     (3,300)    (3,300)    (3,300)
                                    ---------  ---------  ---------
    Net loss applicable to common
     stockholders.................  $(163,881) $  (8,568) $ (11,285)
                                    =========  =========  =========
Income (loss) per common share
 (after preferred stock dividend):
    Continuing operations.........  $   (1.72) $    (.45) $    (.52)
    Discontinued operations.......      (3.40)       .18        .17
                                    ---------  ---------  ---------
    Net loss......................  $   (5.12) $    (.27) $    (.35)
                                    =========  =========  =========
</TABLE>    
     
  The accompanying notes to consolidated financial statements are an integral
                    part of these financial statements.     
 
                                      F-5
<PAGE>
 
                      AIR & WATER TECHNOLOGIES CORPORATION
 
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
               
            FOR THE YEARS ENDED OCTOBER 31, 1997, 1996 AND 1995     
                        
                     (IN THOUSANDS, EXCEPT SHARE DATA)     
 
<TABLE>   
<CAPTION>
                          SERIES A          CLASS A
                      PREFERRED STOCK    COMMON STOCK                           CLASS A COMMON   CUMULATIVE
                       $.01 PAR VALUE   $.001 PAR VALUE  ADDITIONAL             TREASURY STOCK    CURRENCY
                      ---------------- -----------------  PAID-IN   ACCUMULATED ---------------  TRANSLATION
                       SHARES   AMOUNT   SHARES   AMOUNT  CAPITAL     DEFICIT   SHARES   AMOUNT  ADJUSTMENT    TOTAL
                      --------- ------ ---------- ------ ---------- ----------- -------  ------  ----------- ---------
<S>                   <C>       <C>    <C>        <C>    <C>        <C>         <C>      <C>     <C>         <C>
Balance, October 31,
 1994...............  1,200,000  $12   32,107,906  $32    $427,028   $(352,580) (89,902) $ (108)   $    (3)  $  74,381
Net loss............        --   --           --   --          --       (7,985)     --      --         --       (7,985)
Cash dividends,
 Series A Preferred
 Stock..............        --   --           --   --          --       (3,300)     --      --         --       (3,300)
Currency translation
 adjustment.........        --   --           --   --          --          --       --      --          (7)         (7)
                      ---------  ---   ----------  ---    --------   ---------  -------  ------    -------   ---------
Balance, October 31,
 1995...............  1,200,000   12   32,107,906   32     427,028    (363,865) (89,902)   (108)       (10)     63,089
Net loss............        --   --           --   --          --       (5,268)     --      --         --       (5,268)
Cash dividends,
 Series A Preferred
 Stock..............        --   --           --   --          --       (3,300)     --      --         --       (3,300)
Exercise of stock
 options............        --   --         1,250  --            8         --       --      --         --            8
Currency translation
 adjustment.........        --   --           --   --          --          --       --      --        (288)       (288)
                      ---------  ---   ----------  ---    --------   ---------  -------  ------    -------   ---------
Balance, October 31,
 1996...............  1,200,000   12   32,109,156   32     427,036    (372,433) (89,902)   (108)      (298)     54,241
Net loss............        --   --           --   --          --     (160,581)     --      --         --     (160,581)
Cash dividends,
 Series A Preferred
 Stock..............        --   --           --   --          --       (2,200)     --      --         --       (2,200)
Currency translation
 adjustment.........        --   --           --   --          --          --       --      --        (722)       (722)
                      ---------  ---   ----------  ---    --------   ---------  -------  ------    -------   ---------
Balance, October 31,
 1997...............  1,200,000  $12   32,109,156  $32    $427,036   $(535,214) (89,902) $ (108)   $(1,020)  $(109,262)
                      =========  ===   ==========  ===    ========   =========  =======  ======    =======   =========
</TABLE>    
     
  The accompanying notes to consolidated financial statements are an integral
                    part of these financial statements.     
 
                                      F-6
<PAGE>
 
                      AIR & WATER TECHNOLOGIES CORPORATION
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
               
            FOR THE YEARS ENDED OCTOBER 31, 1997, 1996 AND 1995     
                                 (IN THOUSANDS)
 
<TABLE>   
<CAPTION>
                                                    YEARS ENDED OCTOBER 31,
                                                  -----------------------------
                                                    1997       1996      1995
                                                  ---------  --------  --------
<S>                                               <C>        <C>       <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
 Net loss.......................................  $(160,581) $ (5,268) $ (7,985)
 Adjustments to reconcile net loss to net cash
  provided by (used for) continuing operations--
 Discontinued operations........................    108,754    (5,788)   (5,262)
 Depreciation and amortization..................     16,861    13,983    12,279
 Other..........................................      7,865       890       196
 Changes in assets and liabilities, excluding
  effects of divestitures--
  (Increase) decrease in assets--
  Accounts receivable...........................    (14,988)   (2,318)   (2,993)
  Costs and estimated earnings in excess of
   billings on uncompleted contracts............      3,880    (7,383)   (1,213)
  Inventories...................................         28    (1,199)      169
  Prepaid expenses and other current assets.....      3,418      (798)   (1,103)
  Other assets..................................      8,100      (380)   14,827
  Increase (decrease) in liabilities--
  Accounts payable..............................     23,061    11,240    19,134
  Accrued expenses..............................      2,266    (7,317)   (6,776)
  Billings in excess of costs and estimated
   earnings on uncompleted contracts............      2,800      (681)     (171)
  Income taxes..................................       (357)     (600)    3,412
                                                  ---------  --------  --------
   Net cash provided by (used for) continuing
    operations..................................      1,107    (5,619)   24,514
   Net cash provided by (used for) discontinued
    operations..................................     13,887     6,507   (11,531)
                                                  ---------  --------  --------
   Net cash provided by operating activities....     14,994       888    12,983
                                                  ---------  --------  --------
CASH FLOWS FROM INVESTING ACTIVITIES:
 Proceeds from sale of businesses...............      2,015     6,186    12,962
 Capital expenditures...........................     (4,949)   (6,276)   (5,402)
 Investment in environmental treatment
  facilities....................................        123       530       798
 Start up costs and other.......................     (8,400)  (11,122)   (5,501)
 Discontinued operations........................       (978)   (1,206)   (3,569)
                                                  ---------  --------  --------
   Net cash used for investing activities.......    (12,189)  (11,888)     (712)
                                                  ---------  --------  --------
CASH FLOWS FROM FINANCING ACTIVITIES:
 Proceeds from issuances of common and preferred
  stock.........................................        --          8       --
 Payments of notes payable and long-term debt...       (377)     (366)     (654)
 Net borrowings under credit facilities.........      1,700    17,800    14,500
 Accounts receivable repurchased................        --        --    (20,000)
 Cash dividends paid on preferred stock.........     (2,475)   (3,300)   (3,300)
 Other..........................................     (2,231)   (1,643)   (2,670)
                                                  ---------  --------  --------
   Net cash provided by (used for) financing
    activities..................................     (3,383)   12,499   (12,124)
                                                  ---------  --------  --------
   Net increase (decrease) in cash and cash
    equivalents.................................       (578)    1,499       147
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR..     12,667    11,168    11,021
                                                  ---------  --------  --------
CASH AND CASH EQUIVALENTS AT END OF YEAR........  $  12,089  $ 12,667  $ 11,168
                                                  =========  ========  ========
SUPPLEMENTAL DISCLOSURES OF CASH FLOW
 INFORMATION:
 Cash paid for interest.........................  $  23,599  $ 22,417  $ 24,879
                                                  =========  ========  ========
 Cash paid for income taxes.....................  $   1,468  $  1,292  $    604
                                                  =========  ========  ========
</TABLE>    
     
  The accompanying notes to consolidated financial statements are an integral
                    part of these financial statements.     
 
                                      F-7
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
                   
                NOTES TO CONSOLIDATED FINANCIAL STATEMENTS     
   
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIIES     
   
 Consolidation     
   
  The consolidated financial statements include the accounts of Air & Water
Technologies Corporation ("AWT" or the "Company") and all majority-owned
subsidiaries. All significant intercompany transactions have been eliminated.
Investments in joint ventures, which are 50% or less owned, are accounted for
using the equity method, while the Company's share of joint venture results of
operations are included pro rata in "sales," "cost of sales" and "selling,
general and administrative expenses" in the accompanying consolidated
statements of operations.     
   
 Use of accounting estimates     
   
  The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosures of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.     
   
 Cash equivalents     
   
  Cash equivalents consist of investments in short-term highly liquid
securities having an original maturity of three months or less and primarily
include investments in bank time deposits.     
   
 Revenue recognition     
   
  The Company follows the practice of accruing income from long-term contracts
using the percentage-of-completion method. Under this method, the Company
primarily recognizes as profit that proportion of the total anticipated profit
which the cost of work completed bears to the estimated total cost of the work
covered by the contract, including estimated warranty and performance
guarantee costs. As contracts extend over one or more years, revisions of cost
and profit estimates are made periodically and are reflected in the accounting
period in which they are determined. If the estimate of total costs on a
contract indicates a loss, the total anticipated loss is recognized
immediately. Revenues related to the operations, maintenance and management
services within the PSG operating segment are generally recognized as the
related services are provided.     
   
  The asset, "Costs and estimated earnings in excess of billings on
uncompleted contracts," represents contract costs incurred plus earned margin
in excess of amounts billed and includes unbilled retentions which result from
performance of work on contracts in progress in advance of billings pursuant
to certain contract terms. Substantially all of the costs and estimated
earnings in excess of billings on uncompleted contracts are expected to be
collected in fiscal year 1998. The liability, "Billings in excess of costs and
estimated earnings on uncompleted contracts," represents billings in excess of
contract costs incurred plus earned margin.     
   
 Inventories     
   
  Inventories are stated principally at the lower of cost or market (first in,
first out method) and consists primarily of chemicals and spare parts.     
 
 
                                      F-8
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
            
         NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
 Property, plant and equipment     
   
  Property, plant and equipment is stated at cost. Depreciation and
amortization of property, plant and equipment is primarily computed on the
straight-line method over the estimated useful lives of the assets. The
estimated useful lives are generally 20 to 30 years for buildings and
improvements and 3 to 10 years for machinery, equipment and fixtures.
Leasehold improvements are amortized over the term of the lease. Repair and
maintenance costs are expensed as incurred; major renewals and betterments are
capitalized. Property, plant and equipment at October 31 consists of the
following (in thousands):     
 
<TABLE>   
<CAPTION>
                                                                1997     1996
                                                               -------  -------
     <S>                                                       <C>      <C>
     Land and land improvements............................... $   122  $ 4,733
     Buildings and leasehold improvements.....................   3,899   13,114
     Machinery, equipment and fixtures........................  26,324   31,842
                                                               -------  -------
                                                                30,345   49,689
     Less--Accumulated depreciation and amortization.......... (16,957) (20,799)
                                                               -------  -------
                                                               $13,388  $28,890
                                                               =======  =======
</TABLE>    
   
  In connection with the planned Research-Cottrell divestiture (See Note 3),
the Company has decided to sell the land and building located in Branchburg,
New Jersey which was primarily occupied by the operations of Research-
Cottrell. The carrying value was reduced to approximately $5,500,000 after the
recognition of a $5,000,000 impairment charge based on current offers from
interested parties and is classified in other non-current assets.     
   
 Goodwill and long-lived assets     
   
  Goodwill is being amortized over 40 years under the straight-line method.
Goodwill amortization was $5,240,000, $5,025,000 and $4,987,000 for the years
ended October 31, 1997, 1996 and 1995. Accumulated amortization of goodwill
was $38,873,000 and $33,132,000 at October 31, 1997 and 1996. The Company
continually evaluates whether events and circumstances have occurred that
indicate the remaining estimated useful life of goodwill and other long-lived
assets may warrant revision or the remaining balance of goodwill and other
long-lived assets may not be recoverable. When factors indicate that goodwill
and other long-lived assets should be evaluated for possible impairment, the
Company uses an estimate of the related business segment's undiscounted
operating cash flows over the remaining life of the assets in determining
whether the assets are impaired. Any impairment is measured using discounted
operating cash flows or other fair value measures as appropriate. The
realizablility of goodwill and other long lived assets is the result of an
estimate based on the underlying assets' remaining estimated useful lives and
projected operating cash flows. It is possible that this estimate will change
as a consequence of further deterioration in market conditions and operating
results. The effect of a change, if any, would be material to the financial
condition and results of operations.     
   
 Deferred costs     
   
  Certain direct costs which are incurred for new projects, primarily related
to the start up of the operations, maintenance and management of treatment
facilities within the PSG operating segment, are deferred and amortized over
the terms of the specific new contract using the straight-line method. These
unamortized deferred costs are included in other assets and amounted to
$14,044,000 and $13,767,000 at October 31, 1997 and 1996. Deferred debt
issuance costs are amortized over the life of the related debt utilizing the
effective interest method. The unamortized costs were included in other assets
and amounted to $2,946,000 and $3,147,000 at October 31, 1997 and 1996.     
 
                                      F-9
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
            
         NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
 Accrued expenses     
   
  Accrued expenses included the following as of October 31, 1997 and 1996 (in
thousands):     
 
<TABLE>   
<CAPTION>
                                                                1997    1996
                                                               ------- -------
      <S>                                                      <C>     <C>
      Salaries and benefits................................... $19,736 $24,166
      Self-insured loss reserves..............................  21,863  20,700
      Retained liabilities of discontinued operations (Note
       3).....................................................  21,000     --
      Interest and other financing costs......................   6,843   5,820
      Other...................................................  17,239  13,235
                                                               ------- -------
        Total................................................. $86,681 $63,921
                                                               ======= =======
</TABLE>    
   
 Earnings (loss) per share     
   
  The earnings (loss) per share was computed by dividing the net income (loss)
after preferred stock dividends by the weighted average number of common
shares outstanding each period. The weighted average number of shares
outstanding was 32,019,000 in 1997 and 32,018,000 in 1996 and 1995. Common
stock equivalents (stock options) and the Company's 8% Convertible
Subordinated Debentures due 2015 (the "Convertible Debentures") have not been
included in the earnings (loss) per share calculation since the effect is
antidilutive.     
   
 Income taxes     
   
  Deferred taxes are provided on a liability method whereby deferred tax
assets are recognized for deductible temporary differences and operating loss
and tax credit carryforwards and deferred tax liabilities are recognized for
taxable temporary differences. Temporary differences are the differences
between the reported amounts of assets and liabilities and their tax bases.
Deferred tax assets are reduced by a valuation allowance when, in the opinion
of management, it is more likely than not that some portion or all of the
deferred tax assets will not be realized. Deferred tax assets and liabilities
are adjusted for the effects of changes in tax laws and rates on the date of
enactment.     
   
 Reclassifications     
   
  Certain reclassifications have been made to the 1996 and 1995 consolidated
financial statements to conform to the 1997 presentation including the effects
of removing the accounts of the discontinued operations from continuing
operations (See Note 3).     
   
 Recently issued accounting pronouncements     
   
  Statement 128: "Earnings Per Share"--This statement requires that the
Company begin to report "basic" and "diluted" earnings per share which would
replace "primary" and "fully diluted" earnings per share currently reported by
the Company. The key difference is that "basic" earnings per share does not
adjust for common stock equivalents. Statement 128 is effective for the
Company beginning with the first quarter of fiscal 1998 (the three-month
period ending January 31, 1998) and requires restatement of all prior-period
earnings per share data. Adoption of Statement 128 is not expected to have a
material effect.     
   
(2) CGE RELATIONSHIP     
   
  As of October 31, 1997, approximately 43% of the Company's Class A Common
Stock, par value $.001 per share (the "Class A Common Stock"), and all of the
5 1/2% Series A Convertible Exchangeable Preferred Stock (the "Series A
Preferred Stock") comprising approximately 50.0009% of the voting power of the
Company, are owned by Compagnie Generale Des Eaux ("CGE"), a French Company.
The Company also has     
 
                                     F-10
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
            
         NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
certain financial and other relationships with Anjou International Company, a
wholly-owned subsidiary of CGE ("Anjou"). Pursuant to a March 1994 Investment
Agreement among the Company, CGE and Anjou, as amended as of September 24,
1997 by the Recapitalization Agreement discussed below, CGE received the right
to designate a number of members of the Company's Board of Directors
proportionate to the voting power represented by CGE's ownership interest and
to appoint the Company's Chief Executive Officer and Chief Financial Officer.
CGE has agreed to make the Company its exclusive vehicle in the United States,
its possessions and its territories for CGE's water management and wastewater
management and air pollution activities; provided that the foregoing shall not
apply to any acquisition or investment by CGE (or any of its affiliates) of a
privately-owned, publicly-traded or publicly-owned company in the water
utility sector whose primary business is the production, distribution and/or
sale of potable, fire, bulk, draining or irrigation water, nor to CGE's
present or future investments in Consumers Water Company and Philadelphia
Suburban Corporation; provided further, that the foregoing shall have no
application to Kruger, Inc., a distributor of water treatment plant parts and
components and an indirect subsidiary of Omnium Traitement et de Valorisation.
       
  In addition to its direct ownership interest, the Company has benefited from
certain financial undertakings by CGE, including a $125 million term loan from
CGE (See Note 6) and a $60 million credit facility with Anjou (See Note 5). In
connection with a major contract undertaken by PSG in Puerto Rico (See Note
11), CGE has unconditionally guaranteed performance of the contract by PSG.
Anjou has also agreed to guarantee certain obligations of the Company relating
to the bonding of certain contracts (See Note 13). The Company compensates CGE
for its support of the Company's credit facilities (See Note 5) in an amount
equal to 0.95% per annum of the outstanding commitment of its credit
facilities ($1.2 million, $1.2 million and $0.8 million for the years ended
October 31, 1997, 1996 and 1995).     
   
  On September 24, 1997, the Company, CGE and Anjou entered into the
Recapitalization Agreement, whereby the Company would repay the CGE note and
the Anjou credit facility and exchange all of the outstanding shares of Series
A Preferred Stock. The Recapitalization is comprised of two primary elements:
(i) the exchange of the Series A Preferred Stock for shares of Class A Common
Stock and (ii) the Rights Offering pursuant to which CGE has committed to
subscribe to a minimum of $185 million of common stock, the proceeds of which
would be used to reduce the debt to CGE and Anjou discussed above. The pro
forma loss per share, for the year ended October 31, 1997, after giving effect
to the issuance of 140,000,000 shares under the Minimum Subscription and for
the exchange of the Series A Preferred Stock and repayment of the $125 million
term loan from CGE and $60 million credit facility with Anjou would be $0.23
per share. Other items included in the Recapitalization Agreement are as
follows: (i) the Company has agreed to conduct a Consent Solicitation of its
Convertible Debenture holders to amend certain provisions of the indenture
which require the Company to repurchase the debentures if any person acquires
more than 75% of the voting control of the Company; (ii) an amendment to the
Company's charter will be made which would increase the authorized shares of
Class B Common Stock, par value $.001 per share, a class of nonvoting common
stock of the Company, which would be issued to CGE in the event the Company
does not receive the requisite consents in the Consent Solicitation; and (iii)
CGE agreed to further its efforts with the Company to enhance the Company's
participation in the privatization market in the water and wastewater
management industry. The Rights Offering provides for public participation up
to an additional $25 million in gross proceeds. The Recapitalization Agreement
may be terminated by either party on or after March 22, 1998.     
   
(3) RESEARCH-COTTRELL     
   
  On December 2, 1997, the Company announced that it will divest its Research-
Cottrell business segment which provides air pollution control technologies
and services. The Company is currently in negotiations with several interested
parties and believes that most of these businesses will be sold within the
next several months,     
 
                                     F-11
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
but in any event no later than November 30, 1998, and has reported its results
of operations and financial condition as a discontinued operation. Summarized
financial data of Research-Cottrell is as follows (in thousands):     
 
<TABLE>   
<CAPTION>
                                                               1997      1996
                                                              -------  --------
     <S>                                                      <C>      <C>
     Current assets.......................................... $44,441  $ 61,607
     Current liabilities.....................................  45,617    41,912
                                                              -------  --------
     Net current assets (liabilities)........................  (1,176)   19,695
     Goodwill................................................  20,383    96,282
     Property, plant and equipment and other.................   4,069     8,488
                                                              -------  --------
     Net non-current assets..................................  24,452   104,770
                                                              -------  --------
     Net carrying value...................................... $23,276  $124,465
                                                              =======  ========
</TABLE>    
   
  The current assets consist primarily of accounts receivable, costs and
estimated earnings in excess of billings on uncompleted contracts and
inventories. The current liabilities consist primarily of accounts payable,
accrued expenses and billings in excess of costs and estimated earnings on
uncompleted contracts. In addition to the above amounts are estimated retained
liabilities of $21,000,000 related to the estimated losses through disposition,
certain warranty, litigation, lease and other obligations which are included in
accrued expenses at October 31, 1997.     
 
<TABLE>   
<CAPTION>
                                              (IN THOUSANDS)           
                                          1997       1996      1995
                                        ---------  --------  --------
<S>                                     <C>        <C>       <C>       
Sales.................................. $ 173,140  $219,008  $220,207
Costs and expenses.....................   211,400   206,910   207,487
Depreciation and amortization..........     5,101     6,032     6,069
                                        ---------  --------  --------
Operating income (loss)................   (43,361)    6,066     6,651
Non-operating income (expense).........      (854)      550      (861)
                                        ---------  --------  --------
Income (loss) before taxes and loss on
 disposal..............................   (44,215)    6,616     5,790
Income taxes...........................      (639)     (828)     (528)
                                        ---------  --------  --------
Loss before loss on disposal ..........   (44,854)    5,788     5,262
Loss on disposal.......................   (63,900)      --        --
                                        ---------  --------  --------
Income (loss) from discontinued
 operations............................ $(108,754) $  5,788  $  5,262
                                        =========  ========  ========
</TABLE>    
   
  The loss on disposal was developed using a range of estimated proceeds based
on current negotiations with several potential buyers and includes estimated
losses through disposition of $8,500,000. The loss may change in the near-term
based on the ultimate negotiated sale prices and proceeds received, the timing
of the anticipated sale transactions, actual results through disposition and
final resolution of any retained liabilities.     
   
  Also included in the Company's consolidated balance sheets are the net
current assets of the discontinued asbestos abatement operations which amounted
to $585,000 and $1,715,000 at October 31, 1997 and 1996.     
   
(4) INVESTMENTS IN ENVIRONMENTAL TREATMENT FACILITIES     
   
  The Company designed and constructed environmental treatment facilities for
certain governmental entities (the "entities"). The cost of these facilities
was primarily funded through the issuance of tax-exempt Industrial Revenue
Bonds by the entities, the proceeds of which were loaned to the Company. The
entities have entered into long-term service agreements with the Company which
transfers to them substantially all risks of ownership and which will generate
sufficient revenues to service the debt and return the Company's investment.
    
                                      F-12
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
Accordingly, these transactions have been accounted for as sales-type leases.
Consistent with the definition of a legal right of offset (the related
agreements provide for a net settlement of the obligations between the parties,
and the revenues referred to above are legally assigned to payment of debt
service), neither the facilities nor the associated debt (approximately
$28,575,000 and $29,925,000 at October 31, 1997 and 1996) are reflected in the
accompanying consolidated balance sheets. These agreements provide for various
performance guarantees by the Company. Management believes that the Company
will continue to maintain the stipulated performance guarantees.     
   
  The net investment in these sales-type leases consists of the following at
October 31 (in thousands):     
 
<TABLE>   
<CAPTION>
                                                              1997      1996
                                                            --------  --------
     <S>                                                    <C>       <C>
     Future minimum lease payments........................  $ 35,804  $ 38,099
     Expected residual value (unguaranteed)...............     9,354     9,354
     Unearned income......................................    (4,607)   (5,538)
                                                            --------  --------
     Net investment in leases.............................    40,551    41,915
     Offset--nonrecourse debt of $28,600 million and
      $29,900 million, respectively, in 1997 and 1996, net
      of available funds in hands of trustee..............   (23,933)  (25,584)
                                                            --------  --------
     Net investment in leases.............................    16,618    16,331
     Facility enhancements, net of depreciation...........     5,199     5,731
                                                            --------  --------
     Investments in environmental treatment facilities....  $ 21,817  $ 22,062
                                                            ========  ========
</TABLE>    
   
  At October 31, 1997, minimum lease payments to be received, net of executory
costs for each of the five succeeding fiscal years, are $1,961,000, $2,069,000,
$2,216,000, $2,306,000 and $2,306,000.     
   
(5) FINANCING ARRANGEMENTS:     
   
  The Company maintains a $60.0 million seven-year revolving credit facility
with Anjou which matures on August 2, 2003. As of October 31, 1997 and 1996,
the Company's borrowings under the facility totaled $60.0 million. The facility
bears interest at LIBOR plus 0.6% (6.2% at October 31, 1997). Interest expense
related to this facility which was entered into during 1996 was $3,686,000 and
$714,000 for the years ended October 31, 1997 and 1996. The Company expects to
repay the outstanding borrowings under the facility with a portion of the gross
proceeds from the Rights Offering discussed in Note 2.     
   
  The Company also maintains a secured bank credit facility (the "Bank Credit
Facility") which was increased by $20.0 million to $70.0 million as of April
28, 1997. As of October 31, 1997, the Company's borrowings under the Bank
Credit Facility totaled $3.0 million and outstanding letters of credit under
the Bank Credit Facility totaled $22.5 million (unused capacity of $44.5
million).     
   
  As of December 12, 1997 the configuration and structure of the Bank Credit
Facility was revised. Societe Generale purchased and assumed from all of the
other lending banks under the Bank Credit Facility all of such banks' rights
and obligations under the Bank Credit Facility, becoming the sole lending bank
thereunder. In addition, the Company and Societe Generale, entered into an
amendment to extend the $70.0 million credit facility until December 11, 1998.
The facility had been scheduled to expire on March 31, 1998. The amendment
waives the Company's compliance with certain covenants and amends others. The
prior amendments and waiver would have terminated on December 15, 1997 had the
facility not been amended.     
   
  The Bank Credit Facility is primarily designed to finance working capital
requirements, subject to certain limitations, and provide for the issuance of
letters of credit, and is secured by a first security interest in substantially
all of the assets of the Company. Of the total commitment, borrowings are
limited to the lesser of     
 
                                      F-13
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
$70.0 million or the sum of a percentage of certain eligible receivables,
inventories, net property, plant and equipment and costs and estimated earnings
in excess of billings, and bear interest at LIBOR plus 1.25% (6.9% at October
31, 1997), or at a defined bank rate approximating prime (8.5% at October 31,
1997). The Bank Credit Facility also allows for certain additional borrowings,
including, among other things, project financing and foreign borrowing
facilities, subject to limitations, and contains certain financial and other
restrictive covenants, including, among other things, the maintenance of
certain financial ratios, and restrictions on the incurrence of additional
indebtedness, acquisitions, the sale of assets, the payment of dividends and
the repurchase of subordinated debt. In addition, the related revised agreement
requires CGE to maintain its support of the Company, including a minimum 48%
voting equity ownership interest in the Company and its right to designate at
least 48% of the Company's Board of Directors, as well as to appoint the Chief
Executive Officer and the Chief Financial Officer of the Company.     
   
  The gross amount of proceeds from and repayments of working capital
borrowings under these credit facilities consists of the following (in
thousands):     
 
<TABLE>   
<CAPTION>
                                                 1997        1996       1995
                                              -----------  ---------  ---------
     <S>                                      <C>          <C>        <C>
     Borrowings.............................. $ 1,171,000  $ 728,900  $ 509,000
     Repayment...............................  (1,169,300)  (711,100)  (494,500)
                                              -----------  ---------  ---------
     Net..................................... $     1,700  $  17,800  $  14,500
                                              ===========  =========  =========
</TABLE>    
   
(6) LONG-TERM DEBT     
   
  The Company's long-term debt consists of the following at October 31 (in
thousands):     
 
<TABLE>   
<CAPTION>
                                 1997      1996
                               --------  --------
     <S>                       <C>       <C>
     Term loan from CGE......  $125,000  $125,000
     Convertible Subordinated
      Debentures due May 15,
      2015...................   115,000   115,000
     Anjou Credit Facility
      (Note 5)...............    60,000    60,000
     Bank Credit Facility
      (Note 5)...............     3,000       --
     Note due July 1, 2007 at
      8.5%...................     3,095     3,200
     Real estate mortgage
      loans at 8.75%.........     2,148     2,420
     Other...................       --      1,300
                               --------  --------
                                308,243   306,920
     Less current
      installments of long-
      term debt..............      (398)     (378)
                               --------  --------
     Long-term debt..........  $307,845  $306,542
                               ========  ========
</TABLE>    
   
  The $125 million term loan from CGE is an unsecured facility bearing interest
at a rate based upon one, two, three or six-month LIBOR, as selected by the
Company, plus 1.25% (6.9% at October 31, 1997), as defined, and has a final
maturity of June 15, 2001. The term loan contains certain financial and other
restrictive covenants with respect to the Company relating to, among other
things, the maintenance of certain financial ratios, and restrictions on the
sale of assets and the payment of dividends on or the redemption, repurchase,
acquisition or retirement of securities of the Company or its subsidiaries.
Interest expense related to this term loan was $8,715,000, $8,884,000 and
$9,142,000 during the years ended October 31, 1997, 1996 and 1995. The Company
expects to repay the term loan from CGE with a portion of the gross proceeds
from the Rights Offering (see Note 2).     
   
  Interest on the Convertible Debentures is payable semi-annually at 8%. The
Convertible Debentures are redeemable in whole or in part at the option of the
Company at any time, at a redemption price of 102.4% of the     
 
                                      F-14
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
            
         NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
principal amount as of October 31, 1997 reducing to 100% of the principal
amount on May 15, 2000, together with accrued interest to the redemption date.
The Convertible Debentures require equal annual sinking fund payments
beginning May 15, 2000, which are calculated to retire 75% of the Convertible
Debentures prior to maturity. The Convertible Debentures are convertible into
shares of Class A Common Stock at a conversion price of $30.00 per share
subject to adjustments as defined. In addition, each holder of Convertible
Debentures has the right to require the Company to repurchase such holder's
Convertible Debentures at a repurchase price of 100% of the principal amount
of the Convertible Debentures, together with accrued interest to the
repurchase date for cash or common stock (at the option of the Company), if
any person becomes the beneficial owner of 75% or more of the total voting
power of all shares of capital stock of the Company entitled to vote in an
election of directors (See Note 2 regarding the Consent Solicitation).     
   
  At October 31, 1997, the aggregate maturities of long-term debt for each of
the five succeeding fiscal years and thereafter are approximately $0.4
million, $3.4 million, $6.2 million, $131.3 million, $6.3 million, and $160.6
million.     
   
  The Company has obtained a waiver relating to violations of certain
financial covenants under the CGE term loan through November 1, 1998.     
   
(7) COMMON AND PREFERRED STOCK     
   
  The Company has authorized 2,500,000 shares of preferred stock which the
Board of Directors may allocate to any class or series of preferred stock and
determine the relative rights and preferences for each class or series
designated.     
   
  At the option of the Company, its Series A Preferred Stock, all of which is
held by CGE, is exchangeable for the Company's 5.5% Convertible Subordinated
Notes with a maturity of 10 years from the date of issuance of such notes at
$50.00 per share. Such notes and Series A Preferred Stock are convertible at
$12.50 per share into shares of Class A Common Stock, subject to adjustments
as defined. The Company did not declare the quarterly dividend of $825,000 due
September 30, 1997 on the Series A Preferred Stock due to its concerns over
liquidity and the adequacy of its surplus. The Company currently intends to
pay all such dividends in arrears in connection with the Recapitalization.
(See Note 2 for discussion of Recapitalization Agreement).     
   
(8) STOCK OPTION AND PURCHASE PLANS     
   
  Under the Company's employee stock purchase plan (the "Stock Purchase
Plan"), officers and other key employees may be granted the right to purchase
up to 1,000,000 shares of the Company's Class A Common Stock. The Compensation
Committee of the Board of Directors determines the purchase price of shares
issuable under the Stock Purchase Plan. At each of October 31, 1997 and 1996,
approximately 232,000 shares of Class A Common Stock were available for grant
under the Stock Purchase Plan.     
   
  The Company established a stock incentive plan (the "Plan") in 1996 under
which stock options and awards may be granted to purchase shares of common
stock of the Company. The Plan authorizes the granting of stock options and
restricted stock awards for up to an aggregate of 1,000,000 shares of Class A
Common Stock of the Company plus shares remaining available for award under
the prior plan established in 1989. In addition, during 1996 the Company
instituted a "Fresh Start" option program under which employees could
relinquish their rights under outstanding options (at exercise prices ranging
from $11.75 to $29.43) and receive a new option at $8.00 per share as adjusted
using a Black-Scholes pricing model. Under this program, options to purchase
996,737 shares were forfeited and options to purchase 447,291 shares were
granted. The following is a summary of certain information pertaining to
options under the Plan, all of which were granted at the fair market value.
    
                                     F-15
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
            
         NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
 
<TABLE>   
<CAPTION>
                                                 1997        1996       1995
                                               ---------  ----------  ---------
     <S>                                       <C>        <C>         <C>
     Outstanding
      Beginning of year....................... 1,711,331   1,985,120  2,291,347
      Granted.................................    60,000     999,177    129,200
      Exercised...............................       --       (1,250)       --
      Forfeited...............................  (563,997) (1,271,716)  (435,427)
                                               ---------  ----------  ---------
     Outstanding
      End of year............................. 1,207,334   1,711,331  1,985,120
                                               =========  ==========  =========
     At October 31
      Exercisable ............................   934,910     887,952  1,375,493
      Available for grant..................... 2,543,161   2,039,164    766,625
     Outstanding Option price per share:
      Weighted average........................ $    7.91  $     8.16  $   12.76
      Range................................... $    4.31  $     4.25  $    4.31
                                                  to          to         to
                                               $   28.57  $    28.57  $   31.43
     Exercised Option price per share:........ $     --   $     6.00  $     --
</TABLE>    
   
  As permitted under generally accepted accounting principles, grants under
the Plan are accounted for following APB Opinion No. 25 and related
interpretations, and accordingly no compensation cost has been recognized in
the financial statements. Had compensation cost for the Plan been determined
based on the grant date fair values of awards (the method described in FASB
Statement No. 123), reported net loss would have been increased to
$161,671,000 and $6,427,000 in the years ended October 31, 1997 and 1996 and
the loss per common share after preferred stock dividend would have been
increased to $5.15 and $0.30 in the years ended October 31, 1997 and 1996. In
determining the pro forma amounts referred to above, the fair value of each
grant is estimated at the grant date using the Black-Scholes option pricing
model with the following weighted average assumptions for grants: zero
dividend rate, price volatility of 44% and expected lives of 8 years for both
years and risk free interest rates of 6.0% and 6.3% in 1997 and 1996.     
   
(9) BENEFIT PLANS     
   
  The Company has various retiree benefit plans, the most significant of which
are as follows:     
   
  The Company maintains savings and retirement plans in which the Company
matches a fixed percentage of each employees' contribution up to a maximum of
4% of such employees' compensation. One plan also provides for annual
discretionary Company contributions which are fixed by the Board of Directors
based on the performance of the applicable employee group for certain eligible
employees within the Metcalf & Eddy and Research-Cottrell segments. The
expense charged to continuing operations applicable to these plans was
approximately $1,700,000, $2,200,000 and $2,200,000 for the years ended
October 31, 1997, 1996 and 1995.     
   
  The Company maintains defined benefit plans which cover certain active and
retired employees, including substantially all of its eligible employees
within the PSG operating segment. The pension costs related to these plans
were determined by actuarial valuations and assumptions (including discount
rates at 7.5%) and approximated $1,500,000, $1,300,000 and $1,000,000 for the
years ended October 31, 1997, 1996 and 1995. The accrued pension liabilities
were approximately $2,800,000, $2,800,000 and $2,700,000 at October 31, 1997,
1996 and 1995.     
 
 
                                     F-16
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
(10) INVESTMENTS IN JOINT VENTURES     
   
  The Company, in the normal conduct of its subsidiaries' businesses, has
entered into certain partnership arrangements, referred to as "joint ventures,"
for engineering and program management projects. A separate joint venture is
established with respect to each such project. The joint venture arrangements
generally commit each partner to supply a predetermined proportion of the
engineering labor and capital, and provide each partner a predetermined
proportion of income or loss. Each joint venture is terminated upon the
completion of the underlying project.     
   
  The Company's investment in joint ventures (included in other assets)
amounted to $2,775,000 and $5,050,000 at October 31, 1997 and 1996. In
addition, the Company had receivables from the joint ventures totaling
$2,581,000 and $3,848,000 at October 31, 1997 and 1996 related to current
services provided by the Company to the joint ventures. The Company's share of
its joint venture income amounted to $897,000, $1,407,000 and $3,167,000 during
the years ended October 31, 1997, 1996 and 1995. The data presented above
primarily represent Metcalf & Eddy's investment in a 43%-owned joint venture
with CRSS Inc., providing services to the U.S. Air Force in Saudi Arabia, which
is essentially completed.     
   
(11) BUSINESS SEGMENTS     
   
  Through October 31, 1997, the Company's operation may be categorized in three
business segments:     
        
     Professional Services Group provides complete services for the
     operations, maintenance and management of treatment facilities in the
     various water and wastewater, and sludge and biosolids waste management
     markets. Sales are primarily to municipal government agencies, including
     sales under its contract with PRASA representing 38%, 39% and 12% of
     total segment sales in 1997, 1996 and 1995. In addition, total
     receivables due from PRASA for certain reimbursable costs were $34.3
     million and $16.0 million at October 31, 1997 and 1996. The contract
     with PRASA has a five year term, but PRASA may cancel the contract for
     any reason after August 31, 1998. The Company's wholly-owned subsidiary,
     PS Group of Puerto Rico, Inc., is in the process of negotiations with
     PRASA regarding a replacement contract for the existing five-year
     contract. Management currently expects that the contract with PRASA will
     not be canceled by PRASA in August 1998, but will remain in effect
     through its original five-year term ending August 2000 or be amended or
     replaced with a new contract. Additionally, the PRASA employees who
     operate the PRASA facilities are subject to a collective bargaining
     agreement which expires in June 1998.     
        
     Metcalf & Eddy provides a comprehensive range of water related services,
     including treatment process design and on-site and off-site remediation
     of environmental contamination. Sales to federal, state and municipal
     governmental agencies approximated 80% of Metcalf & Eddy's sales for
     each of the three years ended October 31, 1997.     
        
     Research-Cottrell provides air pollution control technologies and
     services. As discussed in Note 3, the Company's Board of Directors has
     decided to divest this segment.     
     
    Sales to the federal government represented approximately 10%, 15% and
  16% of consolidated sales in the years ended October 31, 1997, 1996 and
  1995. Sales between segments are included within the segment recording the
  sales transaction and eliminated for consolidation purposes. Unallocated
  corporate expenses includes administrative costs not allocable to a
  specific segment. Identifiable assets are those assets used by each segment
  in its operation. Corporate assets primarily include cash, fixed assets,
  net assets from discontinued operations and deferred debt issuance costs.
  Sales and identifiable assets of foreign operations as of and for the years
  ended October 31, 1997, 1996 and 1995 were less than 10% of the
  consolidated assets and sales.     
 
                                      F-17
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
  Information by business segment is as follows (in thousands):     
 
<TABLE>   
<CAPTION>
                                   METCALF   RESEARCH-         UNALLOCATED
                            PSG     & EDDY   COTTRELL  OTHER    CORPORATE  ELIMINATIONS CONSOLIDATED
                          -------- --------  --------- ------  ----------- ------------ ------------
<S>                       <C>      <C>       <C>       <C>     <C>         <C>          <C>
FOR THE YEAR ENDED
 OCTOBER 31, 1997:
- ------------------------
Sales...................  $271,650 $186,490  $    --   $  --    $    --      $(1,765)     $456,375
Costs and expenses......   261,707  192,936       --      --      13,450      (1,765)      466,328
Depreciation and amorti-
 zation.................     8,119    8,227       --      --         515         --         16,861
                          -------- --------  --------  ------   --------     -------      --------
Operating income
 (loss).................  $  1,824 $(14,673) $    --   $  --    $(13,965)    $   --       $(26,814)
                          ======== ========  ========  ======   ========     =======      ========
Identifiable assets as
 of October 31, 1997....  $173,041 $165,794  $ 24,452  $   88   $ 19,690     $   --       $383,065
                          ======== ========  ========  ======   ========     =======      ========
Capital expenditures....  $  2,448 $  2,479  $    --   $  --    $     22     $   --       $  4,949
                          ======== ========  ========  ======   ========     =======      ========
Depreciation............  $  1,676 $  4,785  $    --   $  --    $    378     $   --       $  6,839
                          ======== ========  ========  ======   ========     =======      ========
FOR THE YEAR ENDED
 OCTOBER 31, 1996:
- ------------------------
Sales...................  $270,640 $215,358  $    --   $  --    $    --      $(3,907)     $482,091
Costs and expenses......   255,882  195,745       --      --       8,720      (3,907)      456,440
Depreciation and amorti-
 zation.................     7,335    6,223       --      --         425         --         13,983
                          -------- --------  --------  ------   --------     -------      --------
Operating income
 (loss).................  $  7,423 $ 13,390  $    --   $  --    $ (9,145)    $   --       $ 11,668
                          ======== ========  ========  ======   ========     =======      ========
Identifiable assets as
 of October 31, 1996....  $157,566 $188,403  $124,465  $  154   $ 25,770     $   --       $496,358
                          ======== ========  ========  ======   ========     =======      ========
Capital expenditures....  $  2,520 $  3,604  $    --   $  --    $    152     $   --       $  6,276
                          ======== ========  ========  ======   ========     =======      ========
Depreciation............  $  1,703 $  3,083  $    --   $  --    $    406     $   --       $  5,192
                          ======== ========  ========  ======   ========     =======      ========
FOR THE YEAR ENDED
 OCTOBER 31, 1995:
- ------------------------
Sales...................  $179,713 $216,852  $    --   $6,133   $    --      $(4,037)     $398,661
Costs and expenses......   164,435  200,125       --    6,096      9,574      (4,037)      376,193
Depreciation and amorti-
 zation.................     5,679    5,691       --      307        602         --         12,279
                          -------- --------  --------  ------   --------     -------      --------
Operating income
 (loss).................  $  9,599 $ 11,036  $    --   $ (270)  $(10,176)    $   --       $ 10,189
                          ======== ========  ========  ======   ========     =======      ========
Identifiable assets as
 of October 31, 1995....  $148,402 $181,590  $127,417  $3,037   $ 28,872     $   --       $489,318
                          ======== ========  ========  ======   ========     =======      ========
Capital expenditures....  $  2,135 $  2,818  $    --   $  --    $    449     $   --       $  5,402
                          ======== ========  ========  ======   ========     =======      ========
Depreciation............  $  1,660 $  2,747  $    --   $  241   $    584     $   --       $  5,232
                          ======== ========  ========  ======   ========     =======      ========
</TABLE>    
   
(12) INCOME TAXES     
   
  At October 31, 1997, the Company has a net deferred tax asset of $139,700,000
which has been fully reserved by a valuation allowance. The deferred tax asset
is comprised of the tax effects of net operating losses ($116,400,000),
receivable reserves ($2,900,000), inventory reserves ($300,000), other assets
($1,900,000) and accruals not yet deductible ($22,800,000). A deferred tax
liability of $4,600,000 is comprised of fixed assets depreciation. At October
31, 1997, the Company had tax loss carryforwards of approximately $333,000,000.
Such carryforwards expire through 2012.     
   
  Income (loss) from continuing operations before income taxes during the years
ended October 31, 1997, 1996 and 1995, respectively, from the United States was
$(51,131,000), $(9,041,000) and $(12,982,000) and from foreign jurisdictions
was $(182,000), $(3,261,000) and $322,000. The provision (benefit) for income
    
                                      F-18
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
            
         NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
taxes during the years ended October 31, 1997, 1996 and 1995, respectively,
included foreign taxes of $185,000, $(1,071,000) and $146,000 and state taxes
of $329,000, $(175,000) and $441,000. The difference between the income tax
provision (benefit) computed by applying the statutory federal income tax rate
to the pretax loss from continuing operations and the actual tax provision
(benefit) is as follows (in thousands):     
 
<TABLE>   
<CAPTION>
                                                      1997     1996     1995
                                                    --------  -------  -------
     <S>                                            <C>       <C>      <C>
     Statutory benefit............................. $(17,960) $(4,306) $(4,431)
     State income taxes............................      214     (114)     287
     Goodwill and other............................    2,709    2,634    1,745
     Impact of net operating loss..................   15,302      470    2,953
     Impact of foreign operations..................      249       70       33
                                                    --------  -------  -------
                                                    $    514  $(1,246) $   587
                                                    ========  =======  =======
</TABLE>    
   
(13) COMMITMENTS AND CONTINGENCIES     
   
 DOJ Investigation     
   
  In connection with a broad investigation by the U.S. Department of Justice
(the "DOJ") into alleged illegal payments by various persons to members of the
Houston City Council, the Company's subsidiary, PSG, received a federal grand
jury subpoena on May 31, 1996 requesting documents regarding certain PSG
consultants and representatives that had been retained by PSG to assist it in
advising the City of Houston regarding the benefits that could result from the
privatization of Houston's water and wastewater system. PSG has cooperated and
continues to cooperate with the DOJ which has informed the Company that it is
reviewing transactions among PSG and its consultants. The Company promptly
initiated its own independent investigation into these matters and placed
PSG's then Chief Executive Officer on administrative leave of absence with
pay. The PSG Chief Executive Officer, who has denied any wrongdoing, resigned
from PSG on December 4, 1996. In the course of its ongoing investigation, the
Company became aware of questionable financial transactions with third parties
and payments to certain PSG consultants and other individuals, the nature of
which requires further investigation. The Company has brought these matters to
the attention of the DOJ and continues to cooperate fully with its
investigation. No charges of wrongdoing have been brought against PSG or any
PSG executive or employee by any grand jury or other government authority.
However, since the government's investigation is still underway and is
conducted largely in secret, no assurance can be given as to whether the
government authorities will ultimately determine to bring charges or assert
claims resulting from this investigation that could implicate or reflect
adversely upon or otherwise have a material adverse effect on the financial
position or results of operations of PSG or the Company taken as a whole.     
   
 Bremerton Litigation     
   
  The City of Bremerton, Washington brought a contribution action against
Metcalf & Eddy Services, Inc. ("M&E Services"), the operator of a City-owned
wastewater treatment plant from 1987 until late 1995. The contribution action
arises from two prior lawsuits against the City for alleged odor nuisances
brought by two groups of homeowners neighboring the plant. In the first
homeowners' suit, the City paid $4.3 million in cash and approximately $5
million for odor control technology to settle the case. M&E Services
understands the odor control measures generally have been successful and the
odors have been reduced as a result. M&E Services was not a party to the first
homeowners' suit, which has been dismissed with prejudice as to all parties.
In the settlement of the second homeowners' case, the City of Bremerton paid
the homeowners $2.9 million, and M&E Services contributed $0.6 million to the
settlement without admitting liability. All claims raised by the homeowners in
the second suit (except for two recalcitrant homeowners) were resolved. All
claims by and between M&E Services and the City in the second homeowners' suit
were expressly reserved and will be tried     
 
                                     F-19
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
after the city's contribution action, which is currently scheduled for trial in
March 1998. The City is seeking to recover the amounts it expended on the two
settlements, damages for M&E Services' alleged substandard
       
operation of the plant, and attorneys' fees. M&E Services denies any liability
to the City and believes it has meritorious defenses to the claim. However, no
assurances can be given that an adverse judgment would not have a material
adverse effect on the financial position or results of M&E Services or the
Company taken as a whole.     
   
 R-C Belgium Litigation     
   
  On October 14, 1997, Research-Cottrell, Inc. and its subsidiary, Research-
Cottrell Belgium, S.A. ("R-C Belgium"), were named in a lawsuit by N.V. Seghers
Engineering ("Seghers") filed in the Commercial Court in Mechelen, Belgium.
Seghers is R-C Belgium's joint venture partner on two large pollution control
projects. The suit claims damages of approximately $13 million allegedly
resulting from R-C Belgium's breach of contract and substandard performance.
Damages claimed in the lawsuit consist not only of Seghers' alleged cost to
repair the R-C Belgium equipment, but also lost profits, damages to business
reputation, theft of employees (R-C Belgium hired two former Seghers'
employees), increased costs arising out of the failure to gain timely
acceptance of the two plants, excessive payments to R-C Belgium due to alleged
unfair pricing practices by R-C Belgium, and other miscellaneous interest
charges and costs. The initial response to the suit is due January 20, 1998.
The case involves complex technical and legal issues and is in its earliest
stages. Nevertheless, the Company denies liability to Seghers and, based upon
the information currently available, believes Seghers' claimed damages are
grossly inflated. In addition, the Company believes it has meritorious
counterclaims based upon Seghers' breaches of contact and poor performance.
       
 Other Matters     
   
  The Company and its subsidiaries are parties to various other legal actions
arising in the normal course of their businesses, some of which involve claims
for substantial sums. The Company believes that the disposition of such
actions, individually or in the aggregate, will not have a material adverse
effect on the consolidated financial position or results of operations of the
Company taken as a whole.     
   
  The Company and its subsidiaries are obligated under various leases for
office and manufacturing facilities and certain machinery, equipment and
fixtures. Lease terms range from under one year to ten years. Certain leases
have renewal or escalation clauses or both. Certain equipment leases have
purchase options. During December 1996, the Company exercised a cancellation
clause for one of its leased facilities which required an immediate cash
payment of approximately $2.2 million. Total rent expense in the periods ended
October 31, 1997, 1996 and 1995 was $16.9 million, $17.1 million and $16.7
million, respectively. At October 31, 1997, minimum rental commitments under
all noncancellable leases for the five succeeding fiscal years, and thereafter,
are $11.4 million, $10.5 million, $8.5 million, $7.6 million, $6.7 million and
$12.5 million. These minimum rental commitments are net of non-cancelable sub-
leases for the five succeeding fiscal years of $1.3 million, $1.3 million, $1.2
million $1.1 million and $0.5 million.     
   
  The Company currently maintains various types of insurance, including
workers' compensation, general and professional liability and property
coverages and believes that it presently maintains adequate insurance coverages
for all of its present operational activities. It has been both a Company
policy and a requirement of many of its clients that the Company maintain
certain types and limits of insurance coverage for the services and products it
offers, provided that such types and limits can be obtained on commercially
reasonable terms. In addition to existing coverages, the Company has been
successful in obtaining commercially reasonable coverage for certain pollution
risks, though coverage has been on a claims made rather than occurrence basis
due to the professional nature of some of the Company's exposures. Claims made
policies provide coverage to the     
 
                                      F-20
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
Company only for claims reported during the policy period. The Company's
general liability and other insurance policies have historically contained
absolute pollution exclusions, brought about in large measure because of the
insurance industry's adverse claims experience with environmental exposures.
Accordingly, there can be no assurance that environmental exposures that may be
incurred by the Company and its subsidiaries will continue to be covered by
insurance, or that the limits currently provided or that may be obtained in the
future will be sufficient to cover such exposures. A successful claim or claims
in an amount in excess of the Company's insurance coverage or for which there
is no coverage could have a material adverse effect on the Company.     
   
  In connection with the sale of two manufacturing facilities in prior years,
the Company remains contingently liable as guarantor under $2.9 million of
Industrial Revenue Bond financing.     
   
  The Company is often required to procure bid and performance bonds from
surety companies, particularly for clients in the public sector. A bid bond
guarantees that the Company will enter into the contract under consideration at
the price bid and a performance bond guarantees performance of the contract.
The Company is required to indemnify surety companies providing bid and
performance bonds for any payments the sureties are required to make under the
bonds. The Company and its subsidiaries obtain bid and performance bonds
pursuant to a Master Surety Agreement with USF&G. The Company also has
outstanding bid and performance bonds pursuant to agreements with Reliance
Insurance Company, United Pacific Insurance Company and Planet Insurance
Company of Federal Way, Washington, (collectively, "Reliance") although no
bonds have been obtained under this agreement since June 27, 1995, and the
Company anticipates that all of its foreseeable future bonding requirements
will be provided by USF&G. In addition, the Company's Bank Credit Facility
provides for issuance of letters of credit for purposes which include direct or
indirect fulfillment of bid and performance bond requirements by the Company
and its subsidiaries. The Company has never forfeited a bid or a performance
bond and no project sponsor has ever called and drawn a bond issued in support
of the Company's contract obligations. The Company has obtained a waiver
relating to violations of certain financial covenants relating to its bonding
agreement with Reliance through November 1, 1998.     
   
  In August 1997, USF&G notified the Company that it would suspend the renewal
and issuance of new bid and performance bonds as of September 30, 1997, due to
the Company's operating performance and resulting financial condition as
reported at the end of the fiscal quarter ended April 30, 1997, unless it
received indemnification from CGE or Anjou for at least 20% of all future bond
requests including renewals. Anjou has entered into an agreement with USF&G
regarding an arrangement pursuant to which, until terminated at Anjou's
discretion, Anjou will enter into guarantees of certain obligations of the
Company relating to the bonding of certain contracts under the Master Surety
Agreement dated as of October 31, 1995, between USF&G and the Company and its
subsidiaries. Such guarantees would cover, in each instance, 30% of the
aggregate amount of the bonds executed, procured or provided on behalf of the
Company or its subsidiaries on or after October 1, 1997, and certain penalty
amounts, up to $45 million. There can be no assurance that USF&G will be
willing to provide bid bonds to the Company following the Recapitalization
without a guarantee from CGE (or one of its affiliates) and there can be no
assurance that CGE (or one of its affiliates) would be willing to provide such
a guarantee.     
   
  On May 26, 1995, Metcalf & Eddy settled litigation with PRASA that was
initiated in September 1990. Pursuant to the terms of the settlement, Metcalf &
Eddy was to receive aggregate payments of $17.5 million, plus interest. Metcalf
& Eddy received payment of $4.5 million on June 26, 1995, at which time a
Stipulation of Dismissal with Prejudice was filed with the United States
District Court for the District of Puerto Rico formally terminating the
lawsuit. Metcalf & Eddy also received two $6.5 million negotiable promissory
notes bearing interest at market rates and maturing in May 1998 and August
2000, respectively. On September 1, 1995, Metcalf & Eddy sold the two notes and
received net proceeds of $12.8 million of cash, after applicable fees and
expenses.     
 
 
                                      F-21
<PAGE>
 
                      
                   AIR & WATER TECHNOLOGIES CORPORATION     
             
          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)     
   
(14) QUARTERLY FINANCIAL DATA (UNAUDITED)     
   
  Summarized quarterly financial data for 1997 and 1996 is as follows (in
thousands, except per share data):     
 
<TABLE>   
<CAPTION>
                                           1997 BY QUARTER
                            -------------------------------------------------
                             FIRST     SECOND    THIRD     FOURTH     YEAR
                            --------  --------  --------  --------  ---------
<S>                         <C>       <C>       <C>       <C>       <C>
Sales...................... $106,637  $108,631  $110,828  $130,279  $ 456,375
                            --------  --------  --------  --------  ---------
Gross margin...............   17,170     7,522    21,371    24,739     70,802
                            --------  --------  --------  --------  ---------
Loss from continuing
 operations................   (9,792)  (33,304)   (2,024)   (6,707)   (51,827)
                            --------  --------  --------  --------  ---------
Loss from discontinued
 operations................   (2,738)  (30,682)   (2,766)  (72,568)  (108,754)
                            --------  --------  --------  --------  ---------
Net loss................... $(12,530) $(63,986) $ (4,790) $(79,275) $(160,581)
                            ========  ========  ========  ========  =========
Loss per common share
 after preferred stock
 dividend:
Continuing operations...... $   (.33) $  (1.07) $   (.09) $   (.20) $   (1.72)
                            --------  --------  --------  --------  ---------
Discontinued operations....     (.09)     (.95)     (.09)    (2.27)     (3.40)
                            --------  --------  --------  --------  ---------
Net loss................... $   (.42) $  (2.02) $   (.18) $  (2.47) $   (5.12)
                            ========  ========  ========  ========  =========
<CAPTION>
                                           1996 BY QUARTER
                            -------------------------------------------------
                             FIRST     SECOND    THIRD     FOURTH     YEAR
                            --------  --------  --------  --------  ---------
<S>                         <C>       <C>       <C>       <C>       <C>
Sales...................... $110,557  $113,165  $119,524  $138,845  $ 482,091
                            --------  --------  --------  --------  ---------
Gross margin...............   20,623    23,459    22,426    21,459     87,967
                            --------  --------  --------  --------  ---------
Loss from continuing
 operations................   (3,401)   (2,963)   (1,819)   (2,873)   (11,056)
                            --------  --------  --------  --------  ---------
Income from discontinued
 operations................      456     1,658     1,361     2,313      5,788
                            --------  --------  --------  --------  ---------
Net loss................... $ (2,945) $ (1,305) $   (458) $   (560) $  (5,268)
                            ========  ========  ========  ========  =========
Income (loss) per common
 share
 after preferred stock
 dividend:
Continuing operations...... $   (.13) $   (.12) $   (.08) $   (.12) $    (.45)
                            --------  --------  --------  --------  ---------
Discontinued operations....      .01       .05       .04       .08        .18
                            --------  --------  --------  --------  ---------
Net loss................... $   (.12) $   (.07) $   (.04) $   (.04) $    (.27)
                            ========  ========  ========  ========  =========
</TABLE>    
- --------
   
Note a: Earnings (loss) per share for the full year is not necessarily the sum
    of the four quarters due to different average shares outstanding for each
    discrete period.     
   
Note b: Significant charges affecting the comparability of the 1997 quarterly
    loss from continuing operations include a $1.7 million first quarter charge
    related to a cancellation penalty for a high cost leased facility;
    operating charges of $26.6 million reflected in the second quarter for
    professional fees related to marketing consultants and the DOJ
    investigation, increases to reserves for litigation, professional liability
    and certain project contingencies, increases to receivable reserves,
    equipment write-offs and other direct and indirect costs; a $3.2 million
    third quarter reduction in previously accrued discretionary and self-
    insured employee benefits; a fourth quarter $5.0 million asset impairment
    charge related to the Branchburg facility and a $0.8 million severance
    benefit related to the former chief executive officer.     
   
Note c: Significant charges affecting the comparability of the 1997 quarterly
    loss from discontinued operations include a $25.0 million impairment charge
    primarily related to Ecodyne and KVB and operating charges of $4.0 million
    related to increases to Ecodyne receivable and Custodis warranty reserves
    both of which were reflected during the second quarter; third quarter
    operating charges of $2.3 million primarily related to higher than
    anticipated costs on a specific APCD project and increases to receivable
    and warranty reserves for R-C International partially off-set by a
    reduction of previously accrued discretionary and self insured employee
    benefits; fourth quarter operating charges of $8.1 million related to
    additional increases to warranty reserves at R-C International, additional
    costs related to an APCD project and various other reserves for retained
    assets of businesses previously sold as well as an estimated loss on the
    disposal of the segment of $63.9 million.     
 
                                      F-22
<PAGE>
 
                                                                        ANNEX A
 
                [LETTERHEAD OF WASSERSTEIN PERELLA & CO., INC.]
 
                                                             September 24, 1997
 
Special Committee of the
Board of Directors
Air & Water Technologies Corporation
U.S. Highway 22 West and Station Road
Branchburg, New Jersey 08876
 
Members of the Special Committee:
 
  You have asked us to advise you with respect to the fairness, from a
financial point of view, to the holders (other than the Compagnie Generale des
Eaux ("CGE") or its affiliates) of the Class A common stock, par value $.001
per share (the "Common Stock"), of Air & Water Technologies Corporation ("AWT"
or the "Company") of the financial terms of the transactions, taken as a
whole, described in items 1 through 5 of the next paragraph below
(collectively the "Recapitalization Transactions"), pursuant to the terms of
the Recapitalization Agreement, dated as of September 24, 1997, among the
Company, CGE and Anjou International Company (the "Recapitalization
Agreement"). Capitalized terms used herein without definition have the
meanings assigned thereto in the Recapitalization Agreement.
 
  Pursuant to the Recapitalization Agreement, the following Recapitalization
Transactions will occur:
 
    1. CGE will exchange 1,200,000 shares of 5 1/2% Series A Convertible
  Exchangeable Preferred Stock of AWT for a number of newly issued shares of
  Common Stock (the "Exchange Shares") equal to the quotient obtained by
  dividing 60,000,000 by the Subscription Price, all as more fully described
  in Section 1.1 of the Recapitalization Agreement.
 
    2. AWT will declare a dividend on the Record Date to all holders of
  Common Stock of transferable Rights entitling the holders to purchase at
  the Subscription Price in the aggregate such number of shares of Common
  Stock which, when multiplied by the Subscription Price, will equal
  $210,000,000 in gross proceeds, with each Right being exercisable at the
  Subscription Price for one share of Common Stock and, in the case of each
  shareholder other than CGE and its subsidiaries, a number of Warrants
  referred to in paragraph 3 below, all as more fully described in Section
  1.2 of the Recapitalization Agreement.
 
    3. Each person (other than CGE and its subsidiaries) that exercises a
  Right will be entitled to receive a number of Warrants (having the terms
  set forth on Exhibit A to the Recapitalization Agreement) equal to its pro
  rata portion of the Warrant Pool, all as more fully described in Section
  1.2 of the Recapitalization Agreement.
 
    4. CGE will agree to exercise in full all Rights issued to it in the
  Rights Offering and, in addition, CGE will subscribe for and purchase the
  shares of Common Stock underlying Rights that are not exercised in the
  Rights Offering subject to a limitation on CGE's investment pursuant to the
  Rights Offering and the Conditional CGE Subscription of $185,000,000, as
  more fully described in Section 1.3 of the Recapitalization Agreement.
 
    5. The proceeds from the Rights Offering will be used to repay
  $185,000,000 aggregate principal amount of indebtedness owed to CGE and its
  affiliates, except that the first $25,000,000 of gross proceeds received
  pursuant to the Rights Offering from holders of Rights in the Rights
  Offering (other than CGE and its subsidiaries), shall be retained by AWT
  for general corporate purposes, all as more fully described in Section 1.4
  of the Recapitalization Agreement.
 
                                      A-1
<PAGE>
 
  In connection with rendering our opinion, we have reviewed a draft dated
September 24, 1997 of the Recapitalization Agreement, and for purposes hereof,
we have assumed that the final form of this document will not differ in any
material respect from the draft provided to us. In addition, we have assumed
that the terms of the definitive agreement evidencing the Warrants will
reflect the terms of the Warrants as set forth on Exhibit A to the
Recapitalization Agreement but note that we have not been provided with any
drafts of such definitive agreement. We understand that prior to completing
the Rights Offering, the Company will have adopted an amendment to its
Certificate of Incorporation in the form of Exhibit B to the Recapitalization
Agreement (the "Charter Amendment"). We have also reviewed and analyzed
certain publicly available business and financial information relating to the
Company for recent years and interim periods to date, as well as certain
internal financial and operating information, including financial forecasts,
analyses and projections prepared by or on behalf of the Company and provided
to us for purposes of our analysis, and we have met with management of the
Company to review and discuss such information and, among other matters, the
Company's business, operations, assets, financial condition and future
prospects as well as its current financial distress, liquidity constraints,
difficulty in funding operations in the ordinary course and contingent
liabilities identified in its public filings. In evaluating the Company's
financial condition and prospects, we have been apprised of certain
limitations placed by the Company's banks on its ability to borrow amounts
otherwise available under its banking facilities and the necessity of seeking
waivers in order to avoid an event of default under the Company's bank credit
agreement, the possible suspension of certain USF&G bonding arrangements as of
September 30, 1997 in the absence of the timely consummation of a transaction
such as the Recapitalization Transactions or receipt of financial support of
CGE, the possibility of seeking bankruptcy protection as a possible
alternative to the Recapitalization Transactions, the pending investigation by
the Department of Justice with regard to certain activities of Professional
Services Group, the involuntary cessation of quotation of the Company's
Convertible Subordinated Debentures due 2015 on NASDAQ and the recent
notification by the American Stock Exchange ("AMEX") that the Company no
longer meets certain requirements for its Common Stock to be listed on the
AMEX.
 
  We have reviewed and considered certain financial and stock market data
relating to the Company, and we have compared that data with similar data for
certain other companies, the securities of which are publicly traded, that we
believe may be relevant or comparable in certain respects to the Company or
one or more of its businesses or assets. We have also performed such other
studies, analyses, and investigations and reviewed such other information as
we considered appropriate for purposes of this opinion.
 
  In our review and analysis and in formulating our opinion, with your
consent, we have assumed and relied upon the accuracy and completeness of all
the financial and other information provided to or discussed with us or
publicly available, and we have not assumed any responsibility for independent
verification of any such information and have relied upon the reasonableness
and accuracy of the financial projections, forecasts and analyses provided to
us and we have assumed that such projections, forecasts and analyses (as such
were modified by management of the Company in the course of our subsequent
discussions with them) were reasonably prepared in good faith and on bases
reflecting the best currently available judgments and estimates of the
Company's management, and we express no opinion with respect to such
projections, forecasts and analyses or the assumptions upon which they are
based. In addition, we have not reviewed any of the books and records of the
Company, or assumed any responsibility for conducting a physical inspection of
the properties or facilities of the Company, or for making or obtaining an
independent valuation or appraisal of the assets or liabilities of the
Company. We have assumed that the Recapitalization Transactions and the other
agreements and matters described in the Recapitalization Agreement will be
consummated on the terms set forth or provided for therein, without material
waiver or modification. Our opinion is necessarily based on economic and
market conditions and other circumstances as they exist and can be evaluated
by us as of the date hereof. Nothing contained in this opinion shall be
construed as creating or imposing upon us any undertaking or obligation to
advise any person of any change in any fact or matter affecting our opinion of
which we become aware after the date hereof. In rendering this opinion, we are
not expressing any opinion as to the price at which the shares of Common
Stock, Rights or Warrants will actually trade at any time, neither are we
expressing any opinion as to the fairness to any
 
                                      A-2
<PAGE>
 
shareholder or the Company of the Subscription Price or the exercise price of
the Warrants, other than in connection with our consideration of the
Recapitalization Transactions taken as a whole.
 
  We were engaged by the Special Committee of the Board of Directors of AWT
(the "Special Committee") in July of 1997 to assist it in evaluating the terms
of and responding to a recapitalization proposal from CGE and we will receive
a fee for our services, a portion of which is contingent upon the consummation
of the Recapitalization Transactions, as well as a fee for rendering this
opinion. In the ordinary course of our business, we may actively trade
securities of AWT for our own account and for the accounts of our customers
and, accordingly, may at any time hold a long or short position in such
securities. We were not authorized to and did not (i) solicit bids or conduct
an auction for the sale of the Company or (ii) solicit alternative proposals
to the Recapitalization Transactions from any person other than CGE. This
opinion does not address the relative merits of the Recapitalization
Transactions, any other agreements or matters provided for or contemplated by
the Recapitalization Agreement or any other transaction that may be or have
been available as an alternative to the Recapitalization Transactions, whether
or not any such alternative could be or have been achieved, or the terms upon
which any such alternative transaction could be or may have been achieved.
Further, this opinion does not address the fairness of any individual term of
the Recapitalization Transactions other than the fairness, from a financial
point of view, of the financial terms of the Recapitalization Transactions
taken as a whole, to the holders of Common Stock (other than CGE and its
affiliates). Our opinion does not address the Company's or Special Committee's
underlying business decision to effect the Recapitalization Transactions.
 
  It is understood that this letter is for the benefit and use of the Special
Committee of the Board of Directors of the Company in its consideration of the
Recapitalization Transactions, and, except for inclusion in its entirety in a
registration statement relating to the Rights Offering and a proxy statement
relating to the Charter Amendment (or the press release announcing the
Recapitalization Transactions in a form approved by us), may not be quoted,
used or reproduced for any other purpose without our prior written consent.
This opinion does not constitute a recommendation to any shareholder with
respect to how such holder should vote with respect to the Recapitalization
Transactions (including, without limitation, with respect to the Charter
Amendment) or whether any shareholder should exercise, purchase or sell, as
the case may be, any securities of the Company, including but not limited to
shares of Common Stock, Rights or Warrants, and should not be relied upon by
any shareholder as such.
 
  Based upon and subject to the foregoing, including the various assumptions
and limitations set forth herein, it is our opinion that as of the date
hereof, the financial terms of the Recapitalization Transactions, taken as a
whole, are fair from a financial point of view to the holders of the Common
Stock (other than CGE and its affiliates).
 
                                          Very truly yours,
 
                                          Wasserstein Perella & Co., Inc.
 
                                      A-3
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
NO DEALER, SALESPERSON OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY IN-
FORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS IN CONNECTION WITH THE OFFER MADE BY THIS PROSPECTUS, AND, IF GIVEN
OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING
BEEN SANCTIONED OR AUTHORIZED BY THE COMPANY. NEITHER THE DELIVERY OF THIS
PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL UNDER ANY CIRCUMSTANCES CREATE
ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY
SINCE THE DATE HEREOF. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER OR SOLICI-
TATION BY ANYONE IN ANY JURISDICTION IN WHICH THE PERSON MAKING SUCH OFFER OR
SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANY PERSON TO WHOM IT IS UNLAWFUL
TO MAKE SUCH OFFER OR SOLICITATION.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>   
<CAPTION>
                                                                         PAGE
                                                                         ----
<S>                                                                      <C>
Available Information...................................................   3
Prospectus Summary......................................................   4
Risk Factors............................................................  19
Use of Proceeds.........................................................  28
Price Range of Class A Common Stock and Dividend Policy.................  29
Dilution................................................................  30
The Recapitalization....................................................  31
Capitalization..........................................................  54
Unaudited Pro Forma Condensed
 Consolidated Financial Statements......................................  55
Selected Consolidated Financial Data....................................  59
Management's Discussion and Analysis of Financial Condition and Results
 of Operations..........................................................  61
Business................................................................  70
Management..............................................................  88
Ownership of Capital Stock..............................................  97
Certain Relationships and Related Transactions..........................  99
The Rights Offering..................................................... 104
Description of Warrants................................................. 111
Description of Capital Stock............................................ 114
Certain United States Federal Income Tax Consequences................... 116
Legal Matters........................................................... 117
Experts................................................................. 117
Index to Financial Statements........................................... F-1
Opinion of Wasserstein Perella & Co..................................... Annex A
</TABLE>    
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                  AIR & WATER
                                 TECHNOLOGIES
                                  CORPORATION
 
                                     SHARES OF
                                 COMMON STOCK
 
                                      AND
 
                          WARRANTS TO PURCHASE SHARES
                            OF CLASS A COMMON STOCK
 
                                ---------------
 
                                  PROSPECTUS
 
                                ---------------
 
                               DATED      , 1997
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                    PART II
 
                    INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
  The following table sets forth expenses in connection with the issuance and
distribution of the securities being registered. All amounts shown are
estimated, except the SEC registration fee.
 
<TABLE>   
      <S>                                                               <C>
      SEC registration fee............................................. $63,637
      Subscription and Information Agent's fees and expenses...........       *
      Information Agent's fees and expenses............................       *
      Accounting fees..................................................       *
      Legal fees and expenses (including Blue Sky fees and expenses)...       *
      Printing and engraving fees......................................       *
      Miscellaneous....................................................       *
                                                                        -------
        Total.......................................................... $     *
                                                                        =======
</TABLE>    
- --------
* To be supplied by amendment.
 
ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
  Section 145 of the General Corporation Law of the State of Delaware (the
"DGCL") grants each corporation organized thereunder the power to indemnify
its directors and officers against liabilities for certain of their acts.
 
  Article VIII of the Company's By-Laws, a copy of which is filed as Exhibit
3.02 to this Registration Statement, provides, in substance, that directors,
officers, employees and agents shall be indemnified to the fullest extent
permitted by Section 145 of the DGCL.
 
  The Company's Restated Certificate of Incorporation, a copy of which is
filed as Exhibit 3.01 to this Registration Statement, provides that no
director shall be liable to the Company or its stockholders for monetary
damages for breaches of fiduciary duty as a director (the "Indemnity
Provision"). This indemnification does not cover liability (i) for any breach
of the director's duty of loyalty to the Company or its stockholders, (ii) for
acts or omissions not in good faith or which involve intentional misconduct or
a knowing violation of law, (iii) pursuant to Section 174 of the DGCL
(liability for unlawful payment of dividend or unlawful stock purchase or
redemption) or (iv) for any transaction from which the director derived an
improper personal benefit. The repeal or modification of the Indemnity
Provision by the stockholders shall not adversely affect any right or
protection of a director which exists at the time of such repeal or
modification with respect to acts or omissions which occurred prior to such
repeal or modification. In addition, the directors and officers of the Company
are beneficiaries under directors' and officers' insurance policies.
 
ITEM 15. RECENT SALE OF UNREGISTERED SECURITIES.
 
  None.
 
                                     II-1
<PAGE>
 
ITEM 16. EXHIBITS
 
<TABLE>   
<CAPTION>
 EXHIBIT
  NUMBER               DESCRIPTION OF DOCUMENT                    LOCATION
 --------              -----------------------                    --------
 <C>      <S>                                                 <C>
  3.01    Restated Certificate of Incorporation of the               (1)
          Registrant, dated July 10, 1987
  3.01(a) Certificate of Amendment of Certificate of                 (2)
          Incorporation of the Registrant dated October 27,
          1987
  3.01(b) Certificate of Amendment to Certificate of                 (2)
          Incorporation of the Registrant filed June 21,
          1989
  3.01(c) Certificate of Amendment of the Restated                   (2)
          Certificate of Incorporation of the Registrant
          filed July 5, 1989
  3.01(d) Certificate of Amendment of the Restated                   (3)
          Certificate of Incorporation of the Registrant
          filed August 13, 1990
  3.01(e) Certificate of Designation of 5 1/2% Series A              (4)
          Convertible Exchangeable Preferred Stock filed
          June 14, 1994
  3.02    By-Laws of the Registrant, as amended                      (1)
  4.01    Warrant Agreement between the Registrant and the            *
          Warrant Agent
  4.02    Indenture, dated as of May 15, 1990, between the           (12)
          Registrant and Midlantic National Bank, as
          trustee.
  4.03    Form of Rights Certificate                                 **
  5.01    Opinion of Douglas A. Satzger re: validity of               *
          securities
 10.01    Form of Supplemental Pension Agreement of            (1)(Ex. 10.20)
          Research-Cottrell
 10.02    1988 Long-Term Incentive Compensation Plan of              (5)
          Metcalf & Eddy, effective as of September 30,
          1988, as amended September 7, 1989 and March 19,
          1990
 10.02(a) 1989 Long-Term Compensation Plan of the                    (2)
          Registrant, effective as of July 31, 1989
 10.03    Research-Cottrell Environmental Engineering          (6)(Ex. 10.27)
          Profit Sharing Plan, as amended
 10.04    Research-Cottrell Environmental Thrift Plan          (6)(Ex. 10.29)
 10.05    Senior Guaranteed Credit Agreement, dated as of            (7)
          March 10, 1995, by and among the Registrant, the
          Persons listed on Annex B thereto as Borrowers
          and Guarantors, the Banks listed on the signature
          pages thereof, the First National Bank of Chicago
          as Arranging Agents, the First National Bank of
          Chicago as Administrative Agent, and Societe
          Generale, New York Branch, as Collateral Agent
          and Issuing Bank
 10.06    Agreement, dated March 13, 1989, between             (8)(Ex. 10.31)
          Research-Cottrell and certain of its air
          subsidiaries and Reliance Insurance Company,
          United Pacific Insurance and Planet Insurance
          Company of Federal Way, Washington
 10.07    Agreement, dated March 13, 1989, between            (8)(Ex. 10.31(A))
          Research-Cottrell and certain of its water
          subsidiaries and Reliance Insurance Company,
          United Pacific Insurance and Planet Insurance
          Company of Federal Way, Washington
 10.08    Letter Agreement, dated March 18, 1994, between            (4)
          the Registrant and Compagnie Generale des Eaux
 10.09    Investment Agreement, dated as of March 30, 1994,          (4)
          among the Registrant, Compagnie Generale des Eaux
          and Anjou International Company
 10.10    Credit Agreement, dated as of June 14, 1994,               (4)
          between the Registrant and Compagnie Generale des
          Eaux
 10.11    Amended and Restated Subordination Agreement,              (9)
          dated as of March 10, 1995, as amended and
          restated as of March 10, 1995, as amended and
          restated as of November 1995, among Compagnie
          Generale des Eaux, the Registrant, the First
          National Bank of Chicago and United States
          Fidelity and Insurance Company, Fidelity and
          Guaranty Insurance Company and Fidelity and
          Guaranty Insurance Underwriters, Inc. and any
          affiliate of the foregoing
</TABLE>    
 
                                      II-2
<PAGE>
 
<TABLE>   
<CAPTION>
 EXHIBIT
 NUMBER                    DESCRIPTION OF DOCUMENT                     LOCATION
 -------                   -----------------------                     --------
 <C>     <S>                                                           <C>
  10.12  Master Surety Agreement made October 31, 1995 by the            (9)
         Registrant, Research-Cottrell, Inc., Metcalf & Eddy, Inc.,
         and Professional Services Group, Inc., for the continuing
         benefit of United States Fidelity and Guaranty Company,
         Fidelity and Guaranty Insurance Underwriters, Inc. and
         Fidelity and Guaranty Insurance Company and USF&G Insurance
         Company of Mississippi
  10.13  Revolving Credit Agreement, dated as of August 2, 1996,         (10)
         between the Registrant and Anjou International Company
  10.14  Employment Agreement, dated as of November 7, 1996, between     (10)
         Robert B. Sheh and the Registrant
  10.15  Recapitalization Agreement, dated September 24, 1997, among     (11)
         the Registrant, Compagnie Generale des Eaux and Anjou
         International Company
  10.16  Separation Agreement, dated as of October 24, 1997, between      *
         Robert B. Sheh and the Registrant
  11     Statement re: computation of per share earnings                  **
  21     List of Subsidiaries of the Registrant                          (10)
  23.1   Consent of McGladrey & Pullen, LLP                               **
  23.2   Consent of Arthur Andersen LLP                                   **
  23.3   Consent of Douglas A. Satzger (included in Exhibit 5.01)         *
  24.1   Power of attorney (included in the signature page to the        ***
         Registration Statement)
  99.1   Form of Subscription and Information Agency Agreement            *
  99.2   Form of Instructions for Rights Certificates                     **
  99.3   Form of Notice of Guaranteed Delivery                            **
  99.4   Important Tax Information                                        **
</TABLE>    
- --------
 (1) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Registration Statement on Form
     S-1 (No. 33-17833), as amended, which became effective on April 12, 1988.
   
 (2) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Registration Statement on Form
     S-1 (No. 33-29568), as amended, which became effective on August 10,
     1989.     
   
 (3) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Registration Statement on Form
     S-4 (No. 33-43143), as filed with the Securities and Exchange Commission
     on October 3, 1991.     
   
 (4) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Annual Report on Form 10-K for
     the fiscal year ended October 21, 1994, as filed with the Securities and
     Exchange Commission on January 30, 1995.     
   
 (5) Incorporated by reference to Annex I to the Registrant's Proxy Statement
     on Schedule 14A dated May 24, 1994, in connection with its Annual Meeting
     of Stockholders held on June 14, 1994.     
   
 (6) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to Metcalf & Eddy's Registration Statement on Form
     S-1 (No. 33-24315), as amended, which became effective on October 18,
     1988.     
       
 (7) Incorporated by reference to Exhibit 1 to the Registrant's Quarterly
     Report on Form 10-Q for the fiscal quarter ended April 30, 1995, as filed
     with the Securities and Exchange Commission on June 14, 1995.
   
 (8) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to Metcalf & Eddy's Registration Statement on Form
     S-1 (No. 33-28846), as amended, which became effective on June 29, 1989.
         
          
 (9) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Annual Report on Form 10-K for
     the fiscal year ended October 31, 1995, as filed with the Securities and
     Exchange Commission on January 3, 1996.     
 
                                     II-3
<PAGE>
 
   
(10) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Annual Report on Form 10-K for
     the fiscal year ended October 31, 1996, as filed with the Securities and
     Exchange Commission on January 29, 1997.     
          
(11) Incorporated by reference to Exhibit 10.1 to the Current Report on Form
     8-K of the Registrant, dated September 24, 1997.     
   
(12) Incorporated by reference to Exhibit 4.5 to the Registrant's Registration
     Statement on S-1 ( No. 33-33088), as filed with the Securities and
     Exchange Commission on April 24, 1990.     
   
  (*) To be filed by amendment.
 (**) Filed herewith.
(***) Previously filed.     
 
ITEM 17. UNDERTAKINGS
 
  (a) The undersigned registrant hereby undertakes:
 
    (1) To file, during any period in which offers or sales are being made, a
  post-effective amendment to this registration statement:
 
      (i) To include any prospectus required by Section 10(a)(3) of the
    Securities Act of 1933;
 
      (ii) To reflect in the prospectus any facts or events arising after
    the effective date of the registration statement (or the most recent
    post-effective amendment thereof) which, individually or in the
    aggregate, represent a fundamental change in the information set forth
    in the registration statement. Notwithstanding the foregoing, any
    increase or decrease in volume of securities offered (if the total
    dollar value of securities offered would not exceed that which was
    registered) and any deviation from the low or high and of the estimated
    maximum offering range may be reflected in the form of prospectus filed
    with the Commission pursuant to Rule 424(b) if, in the aggregate, the
    changes in volume and price represent no more than 20 percent change in
    the maximum aggregate offering price set forth in the "Calculation of
    Registration Fee" table in the effective registration statement.
 
      (iii) To include any material information with respect to the plan of
    distribution not previously disclosed in the registration statement or
    any material change to such information in the registration statement;
 
    (2) That, for the purpose of determining any liability under the
  Securities Act of 1933, each such post-effective amendment shall be deemed
  to be a new registration statement relating to the securities offered
  therein, and the offering of such securities at that time shall be deemed
  to be the initial bona fide offering thereof.
 
    (3) To remove from registration by means of a post-effective amendment
  any of the securities being registered which remain unsold at the
  termination of the offering.
 
  (b) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the registrant pursuant to the foregoing provisions, or otherwise, the
registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in such
Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered hereby, the registrant will,
unless in the opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as
expressed in such Act and will be governed by the final adjudication of such
issue.
 
                                     II-4
<PAGE>
 
                                  SIGNATURES
   
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT
HAS DULY CAUSED THIS AMENDMENT TO THE REGISTRATION STATEMENT TO BE SIGNED ON
ITS BEHALF BY THE UNDERSIGNED, THEREUNTO DULY AUTHORIZED, IN THE CITY OF
BRANCHBURG, STATE OF NEW JERSEY, ON DECEMBER 23, 1997.     
 
                                          Air & Water Technologies Corporation
 
                                                     /s/ Alain Brunais
                                          By: _________________________________
                                                 ALAIN BRUNAIS SENIOR VICE
                                               PRESIDENT AND CHIEF FINANCIAL
                                                          OFFICER
       
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS
REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE
CAPACITIES AND ON THE DATES INDICATED.
 
              SIGNATURE                        TITLE                 DATE
 
                                       Chairman of the               
               *                        Board of Directors       December 23,
- -------------------------------------                             1997     
           WILLIAM KRIEGEL
 
                                       President, Chief             
               *                        Executive Officer        December 23,
- -------------------------------------   and Director              1997     
           THIERRY MALLET               (Principal
                                        Executive Officer)
 
          /s/ Alain Brunais            Senior Vice                  
- -------------------------------------   President, Chief         December 23,
            ALAIN BRUNAIS               Financial Officer         1997     
                                        and Director
                                        (Principal
                                        Accounting Officer)
                                        (Principal
                                        Financial Officer)
 
                                       Director                      
               *                                                 December 23,
- -------------------------------------                             1997       
          JEAN-CLAUDE BANON
 
                                       Director                      
               *                                                 December 23,
- -------------------------------------                             1997     
            DANIEL CAILLE
 
                                     II-5
<PAGE>
 
              SIGNATURE                         TITLE                DATE
 
                                        Director                 
               *                                                 December 23,
- -------------------------------------                             1997      
          CAROL LYNN GREEN
 
                                        Director                 
               *                                                 December23,
- -------------------------------------                             1997      
           JOHN W. MORRIS

           
        /s/ Alain Brunais      
*By ____________________________ 
        ATTORNEY-IN-FACT     
 
                                      II-6
<PAGE>
 
                                 EXHIBIT INDEX
 
<TABLE>   
<CAPTION>
 EXHIBIT
 NUMBER                DESCRIPTION OF DOCUMENT                    LOCATION
 -------               -----------------------                    --------
 <C>      <S>                                                 <C>
  3.01    Restated Certificate of Incorporation of the               (1)
          Registrant, dated July 10, 1987
  3.01(a) Certificate of Amendment of Certificate of                 (2)
          Incorporation of the Registrant dated October 27,
          1987
  3.01(b) Certificate of Amendment of the Certificate of             (2)
          Incorporation of the Registrant filed June 21,
          1989
  3.01(c) Certificate of Amendment of the Restated                   (2)
          Certificate of Incorporation of the Registrant
          filed July 5, 1989
  3.01(d) Certificate of Amendment to Restated Certificate           (3)
          of Incorporation of the Registrant filed August
          13, 1990
  3.01(e) Certificate of Designation of 5 1/2% Series A              (4)
          Convertible Exchangeable Preferred Stock filed
          June 14, 1994
  3.02    By-Laws of the Registrant, as amended                      (1)
  4.01    Warrant Agreement between the Registrant and the            *
          Warrant Agent
  4.02    Indenture, dated as of May 15, 1990, between the          (12)
          Registrant and Midlantic National Bank, as
          trustee
  4.03    Form of Rights Certificate                                 **
  5.01    Opinion of Douglas A. Satzger re: validity of               *
          securities
 10.01    Form of Supplemental Pension Agreement of            (1)(Ex. 10.20)
          Research-Cottrell
 10.02    1988 Long-Term Incentive Compensation Plan of              (5)
          Metcalf & Eddy, effective as of September 30,
          1988, as amended September 7, 1989 and March 19,
          1990
 10.02(a) 1989 Long-Term Compensation Plan of the                    (2)
          Registrant, effective as of July 31, 1989
 10.03    Research-Cottrell Environmental Engineering          (6)(Ex. 10.27)
          Profit Sharing Plan, as amended
 10.04    Research-Cottrell Environmental Thrift Plan          (6)(Ex. 10.29)
 10.05    Senior Guaranteed Credit Agreement, dated as of            (7)
          March 10, 1995, by and among the Registrant, the
          Persons listed on Annex B thereto as Borrowers
          and Guarantors, the Banks listed on the signature
          pages thereof, the First National Bank of Chicago
          as Arranging Agents, the First National Bank of
          Chicago as Administrative Agent, and Societe
          Generale, New York Branch, as Collateral Agent
          and Issuing Bank
 10.06    Agreement, dated March 13, 1989, between             (8)(Ex. 10.31)
          Research-Cottrell and certain of its air
          subsidiaries and Reliance Insurance Company,
          United Pacific Insurance and Planet Insurance
          Company of Federal Way, Washington
 10.07    Agreement, dated March 13, 1989, between            (8)(Ex. 10.31(A))
          Research-Cottrell and certain of its water
          subsidiaries and Reliance Insurance Company,
          United Pacific Insurance and Planet Insurance
          Company of Federal Way, Washington
 10.08    Letter Agreement, dated March 18, 1994, between            (4)
          the Registrant and Compagnie Generale des Eaux
 10.09    Investment Agreement, dated as of March 30, 1994,          (4)
          among the Registrant, Compagnie Generale des Eaux
          and Anjou International Company
 10.10    Credit Agreement, dated as of June 14, 1994,               (4)
          between the Registrant and Compagnie Generale des
          Eaux
 10.11    Amended and Restated Subordination Agreement,              (9)
          dated as of March 10, 1995, as amended and
          restated as of March 10, 1995, as amended and
          restated as of November 1995, among Compagnie
          Generale des Eaux, the Registrant, the First
          National Bank of Chicago and United States
          Fidelity and Insurance Company, Fidelity and
          Guaranty Insurance Company and Fidelity and
          Guaranty Insurance Underwriters, Inc. and any
          affiliate of the foregoing
</TABLE>    
 
                                      II-7
<PAGE>
 
<TABLE>   
<CAPTION>
 EXHIBIT
 NUMBER                    DESCRIPTION OF DOCUMENT                     LOCATION
 -------                   -----------------------                     --------
 <C>     <S>                                                           <C>
 10.12   Master Surety Agreement made October 31, 1995 by the            (9)
         Registrant, Research-Cottrell, Inc., Metcalf & Eddy, Inc.,
         and Professional Services Group, Inc., for the continuing
         benefit of United States Fidelity and Guaranty Company,
         Fidelity and Guaranty Insurance Underwriters, Inc. and
         Fidelity and Guaranty Insurance Company and USF&G Insurance
         Company of Mississippi
 10.13   Revolving Credit Agreement, dated as of August 2, 1996,         (10)
         between the Registrant and Anjou International Company
 10.14   Employment Agreement, dated as of November 7, 1996, between     (10)
         Robert B. Sheh and the Registrant
 10.15   Recapitalization Agreement, dated September 24, 1997, among     (11)
         the Registrant, Compagnie Generale des Eaux and Anjou
         International Company
 10.16   Separation Agreement, dated as of October 24, 1997, between      *
         Robert B. Sheh and the Registrant
 11      Statement re: computation of per share earnings                  **
 21      List of Subsidiaries of the Registrant                          (10)
 23.1    Consent of McGladrey & Pullen, LLP                               **
 23.2    Consent of Arthur Andersen LLP                                   **
 23.3    Consent of Douglas A. Satzger (included in Exhibit 5.01)         *
 24.1    Power of attorney (included in the signature page to the        ***
         Registration Statement)
 99.1    Form of Subscription and Information Agency Agreement            *
 99.2    Form of Instructions for Rights Certificates                     **
 99.3    Form of Notice of Guaranteed Delivery                            **
 99.4    Important Tax Information                                        **
</TABLE>    
- --------
 (1) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Registration Statement on Form
     S-1 (No. 33-17833), as amended, which became effective on April 12, 1988.
   
 (2) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Registration Statement on Form
     S-1 (No. 33-29568), as amended, which became effective on August 10,
     1989.     
   
 (3) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Registration Statement on Form
     S-4 (No. 33-43143), as filed with the Securities and Exchange Commission
     on October 3, 1991.     
   
 (4) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Annual Report on Form 10-K for
     the fiscal year ended October 21, 1994, as filed with the Securities and
     Exchange Commission on January 30, 1995.     
   
 (5) Incorporated by reference to Annex I to the Registrant's Proxy Statement
     on Schedule 14A dated May 24, 1994, in connection with its Annual Meeting
     of Stockholders held on June 14, 1994.     
   
 (6) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to Metcalf & Eddy's Registration Statement on Form
     S-1 (No. 33-24315), as amended, which became effective on October 18,
     1988.     
          
 (7) Incorporated by reference to Exhibit 1 to the Registrant's Quarterly
     Report on Form 10-Q for the fiscal quarter ended April 30, 1995, as filed
     with the Securities and Exchange Commission on June 14, 1995.     
   
 (8) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to Metcalf & Eddy's Registration Statement on Form
     S-1 (No. 33-28846), as amended, which became effective on June 29, 1989.
         
       
                                     II-8
<PAGE>
 
   
 (9) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Annual Report on Form 10-K for
     the fiscal year ended October 31, 1995, as filed with the Securities and
     Exchange Commission on January 3, 1996.     
   
(10) Incorporated by reference to the similarly numbered exhibit (unless
     otherwise indicated) to the Registrant's Annual Report on Form 10-K for
     the fiscal year ended October 31, 1996, as filed with the Securities and
     Exchange Commission on January 29, 1997.     
   
(11) Incorporated by reference to Exhibit 10.1 to the Current Report on Form
     8-K of the Registrant, dated September 24, 1997.     
   
(12) Incorporated by reference to Exhibit 4.5 to the Registrant's Registration
     Statement on S-1 ( No. 33-33088), as filed with the Securities and
     Exchange Commission on April 24, 1990.     
   
  (*) To be filed by amendment.     
   
 (**) Filed herewith.     
   
(***) Previously filed.     
 
                                     II-9

<PAGE>
 
                                                                    EXHIBIT 4.03

AIR & WATER TECHNOLOGIES CORPORATION             RIGHTS CERTIFICATE NO. ________
CUSIP NO. 009058 12 4                                  NUMBER OF RIGHTS ________


       THE TERMS AND CONDITIONS OF THE RIGHTS OFFERING ARE SET FORTH IN THE
     PROSPECTUS OF AIR & WATER TECHNOLOGIES CORPORATION (THE "COMPANY") DATED
                 , 1997 (THE "PROSPECTUS") AND ARE INCORPORATED HEREIN BY
     REFERENCE. COPIES OF THE PROSPECTUS ARE AVAILABLE UPON REQUEST FROM THE
     SUBSCRIPTION AGENT AND THE INFORMATION AGENT.

       THIS CERTIFICATE OR A NOTICE OF GUARANTEED DELIVERY MUST BE RECEIVED BY
     THE SUBSCRIPTION AND INFORMATION AGENT WITH PAYMENT IN FULL AT OR PRIOR TO
     5:00 P.M., NEW YORK CITY TIME, ON                 , 1998, UNLESS SUCH TIME
     IS EXTENDED BY THE COMPANY AS PROVIDED IN THE PROSPECTUS (AS IT MAY BE
     EXTENDED, THE "EXPIRATION DATE").

- --------------------------------------------------------------------------------
 The Rights represented by this Rights Certificate may be exercised by duly
 completing Form 1; and may be transferred, assigned, exercised or sold through
 a bank or broker by duly completing Form 2.  Rights holders are advised to
 review the Prospectus and instructions, copies of which are available from the
 Subscription and Information Agent, before exercising or selling their Rights.

 IMPORTANT: Complete appropriate FORM and, if applicable, delivery instructions,
 and SIGN on reverse side.
- --------------------------------------------------------------------------------

SUBSCRIPTION PRICE $             PER SHARE          RIGHTS TO PURCHASE SHARES OF
REGISTERED OWNER:                                    COMMON STOCK OF AIR & WATER
                                                        TECHNOLOGIES CORPORATION

       The registered owner whose name is inscribed hereon, or assigns, is
     entitled to subscribe for and purchase shares of Class A Common Stock, par
     value $.001 per share, of the Company (the "Class A Common Stock") (subject
     to the Company's obligation to issue Class B Common Stock, par value $.001
     per share, of the Company (the "Class B Common Stock") in certain
     circumstances) upon the terms and subject to the conditions set forth in
     the Prospectus and instructions relating thereto.


Date:


By:                                    By:                         
   -----------------------------------    -------------------------
   Subscription and Information Agent,         Thierry Mallet      
          Authorized Signatory                  President and      
                                       and Chief Executive Officer 
 By:                                    
    -------------------------------------
             Douglas A. Satzger         
   Senior Vice President, General Counsel
             and Secretary                    

       THIS RIGHTS CERTIFICATE IS TRANSFERABLE AND MAY BE COMBINED OR DIVIDED
     (BUT ONLY INTO RIGHTS CERTIFICATES EVIDENCING A WHOLE NUMBER OF RIGHTS) AT
     THE OFFICE OF THE SUBSCRIPTION AND INFORMATION AGENT.

       RIGHTS HOLDERS SHOULD BE AWARE THAT IF THEY CHOOSE TO EXERCISE OR
     TRANSFER LESS THAN ALL OF THE RIGHTS EVIDENCED HEREBY, THEY MAY NOT RECEIVE
     A NEW RIGHTS CERTIFICATE IN SUFFICIENT TIME TO EXERCISE THE REMAINING
     RIGHTS EVIDENCED THEREBY.

       FORM 1--EXERCISE AND SUBSCRIPTION: The undersigned hereby irrevocably
     exercises one or more Rights to subscribe for shares of Class A Common
     Stock (subject to the Company's obligation to issue Class B Common Stock in
     certain circumstances), as indicated below, on the terms and subject to the
     conditions specified in the Prospectus, receipt of which is hereby
     acknowledged.

     (a)    Number of shares subscribed for pursuant to the Basic Subscription
            Privilege (as defined in the Prospectus): __________
            (One Right needed to subscribe for each full share)

     (b)    Number of shares subscribed for pursuant to the Oversubscription
            Privilege (as defined in the Prospectus): __________ *

     (c)    Total Subscription Price:  $__________**
            (Total number of shares subscribed for pursuant to both the Basic
            Subscription Privilege and the Oversubscription Privilege, times the
            Subscription Price of $             )

- ---------------
*  SHARES OF CLASS A COMMON STOCK AVAILABLE TO RIGHTS HOLDERS PURSUANT TO THE
   OVERSUBSCRIPTION PRIVILEGE MAY BE LIMITED AS SET FORTH IN THE PROSPECTUS. IF
   THE SHARES OF CLASS A COMMON STOCK SUBSCRIBED FOR PURSUANT TO THE
   OVERSUBSCRIPTION PRIVILEGE EXCEED THE NUMBER OF SHARES ACTUALLY TENDERED TO
   THE SUBSCRIBER, THE PORTION OF THE SUBSCRIPTION PRICE TENDERED CORRESPONDING
   TO THOSE EXCESS SHARES SHALL BE RETURNED TO THE SUBSCRIBER, WITHOUT INTEREST,
   AS SOON AS PRACTICABLE AFTER THE EXPIRATION DATE.

** IF THE AGGREGATE SUBSCRIPTION PRICE ENCLOSED OR TRANSMITTED IS INSUFFICIENT
   TO PURCHASE THE NUMBER OF UNDERLYING SHARES SUBSCRIBED FOR, OR IF NO NUMBER
   OF UNDERLYING SHARES TO BE PURCHASED IS SPECIFIED, THEN YOU WILL BE DEEMED TO
   HAVE EXERCISED THE BASIC SUBSCRIPTION PRIVILEGE TO PURCHASE UNDERLYING SHARES
   TO THE FULL EXTENT OF THE PAYMENT PRICE TENDERED. IF THE AGGREGATE
   SUBSCRIPTION PRICE PAID BY YOU EXCEEDS THE AMOUNT NECESSARY TO PURCHASE THE
   NUMBER OF UNDERLYING SHARES FOR WHICH YOU HAVE INDICATED AN INTENTION TO
   SUBSCRIBE (SUCH EXCESS BEING THE "SUBSCRIPTION EXCESS"), THEN YOU WILL BE
   DEEMED TO HAVE EXERCISED THE OVERSUBSCRIPTION PRIVILEGE TO THE FULL EXTENT OF
   THE EXCESS PAYMENT TENDERED, TO PURCHASE, TO THE EXTENT AVAILABLE, THAT
   NUMBER OF WHOLE SHARES OF CLASS A COMMON STOCK (SUBJECT TO THE COMPANY'S
   OBLIGATION TO ISSUE SHARES OF CLASS B COMMON STOCK IN CERTAIN CIRCUMSTANCES)
   EQUAL TO THE QUOTIENT OBTAINED BY DIVIDING THE SUBSCRIPTION EXCESS BY THE
   SUBSCRIPTION PRICE. ANY REMAINING AMOUNT SHALL BE RETURNED TO YOU BY MAIL
   WITHOUT INTEREST OR DEDUCTION AS SOON AS PRACTICABLE AFTER THE EXPIRATION
   DATE AND AFTER ALL PRORATIONS AND ADJUSTMENTS CONTEMPLATED BY THE TERMS OF
   THE RIGHTS OFFERING HAVE BEEN EFFECTED.
<PAGE>
 
       METHOD OF PAYMENT (CHECK ONE)

       [_] CHECK, BANK DRAFT OR MONEY ORDER PAYABLE TO "                    ".

       [_] WIRE TRANSFER DIRECTED TO             ABA NO.          (MARKED: "AIR
           & WATER TECHNOLOGIES CORPORATION SUBSCRIPTION").


     (d)    If the number of Rights being exercised pursuant to the Basic
            Subscription Privilege is less than all of the Rights represented by
            the Rights Certificate (check only one):

       [_] DELIVER TO ME A NEW RIGHTS CERTIFICATE EVIDENCING THE REMAINING
           RIGHTS TO WHICH I AM ENTITLED.

       [_] DELIVER A NEW RIGHTS CERTIFICATE EVIDENCING THE REMAINING RIGHTS IN
           ACCORDANCE WITH MY FORM 2 INSTRUCTIONS (which include any required
           signature guarantee).

       [_] CHECK HERE IF RIGHTS ARE BEING EXERCISED PURSUANT TO A NOTICE OF
           GUARANTEED DELIVERY DELIVERED TO THE SUBSCRIPTION AND INFORMATION
           AGENT PRIOR TO THE DATE HEREOF AND COMPLETE THE FOLLOWING:

           Name(s) of Registered Owner(s): ______________________________
           Window Ticket Number (if any): _______________________________
           Date of Execution of Notice of Guaranteed Delivery: __________
           Name of Institution which guaranteed delivery: _______________

       FORM 2--TO TRANSFER YOUR RIGHTS CERTIFICATE OR SOME OR ALL OF YOUR RIGHTS
     OR TO EXERCISE OR SELL RIGHTS THROUGH YOUR BANK OR BROKER:  For value
     received,               Rights represented by this Rights Certificate are
     hereby assigned to (please print name and address and Social Security
     Number or Taxpayer Identification Number of transferee in full):


           Name ____________________________________________
 
           Address _________________________________________
 
           _________________________________________________
                      Social Security Number or
                    Taxpayer Identification Number


       FORM 3--DELIVERY INSTRUCTIONS: Name and/or address for mailing any stock
     certificates, new Rights Certificate or cash payment if other than shown on
     the reverse hereof:


                               Name ____________________________________________

                               Address _________________________________________

                               _________________________________________________
                                              (Including Zip Code)
<PAGE>
 
                                   IMPORTANT
      RIGHTS HOLDER SIGN HERE AND, IF RIGHTS ARE BEING SOLD OR EXERCISED,
                         COMPLETE SUBSTITUTE FORM W-9
 
 
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                          (Signature(s) of Holder(s))
Dated
      --------------------------------------------------------------------------
(Must be signed by the registered holder(s) exactly as name(s) appear(s) on this
Rights Certificate. If signature is by trustee(s), executor(s),
administrator(s), guardian(s), attorney(s)-in-fact, agent(s), officer(s) of a
corporation or another acting in a fiduciary or representative capacity, please
provide the following information. See Instructions.)
 
 
Name(s)
        ------------------------------------------------------------------------
                                 (Please Print)
Capacity
         -----------------------------------------------------------------------
Address
        ------------------------------------------------------------------------
                              (Including Zip Code)
Area Code and Telephone Number
                               -------------------------------------------------
                                     (Home)
 
- --------------------------------------------------------------------------------
                                   (Business)

Social Security Number or Taxpayer Identification Number
                                                         -----------------------
                                                  (Complete Substitute Form W-9)


                           GUARANTEE OF SIGNATURE(S)
                    NOTE: SEE SECTION 5(c) OF INSTRUCTIONS


Authorized Signature
                     -----------------------------------------------------------
Name(s)
        ------------------------------------------------------------------------
Title
      --------------------------------------------------------------------------
Name of Firm
             -------------------------------------------------------------------
Address
        ------------------------------------------------------------------------
Area Code and Telephone Number
                               -------------------------------------------------
Dated
      --------------------------------------------------------------------------

<PAGE>
 
                                                                   
                                                                EXHIBIT 11     
 
                     AIR & WATER TECHNOLOGIES CORPORATION
                       COMPUTATION OF PER SHARE EARNINGS
                    
                 (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)     
 
<TABLE>   
<CAPTION>
                                              1997       1996      1995
                                              ----       ----      ----
<S>                                         <C>        <C>       <C>       
PRIMARY EARNINGS (LOSS) PER SHARE:
 1. Loss from continuing operations........ $ (51,827) $(11,056) $(13,247)
 2. Less preferred dividends (2)...........    (3,300)   (3,300)   (3,300)
 3. Loss from continuing operations
 applicable to common  stockholders........   (55,127)  (14,356)  (16,547)
 4. Income (loss) from discontinued
 operations................................  (108,754)    5,788     5,262
 5. Net loss applicable to common
 stockholders.............................. $(163,881) $ (8,568) $(11,285)
 6. Weighted average shares outstanding....    32,019    32,018    32,018
 7. Loss per share from continuing
 operations (3/6).......................... $   (1.72) $   (.45) $   (.52)
 8. Income (loss) per share from
 discontinued operations (4/6).............     (3.40)      .18       .17
 9. Net loss per share..................... $   (5.12) $   (.27) $   (.35)
FULLY DILUTED EARNINGS (LOSS) PER SHARE
 (1):
10. Line 3. above.......................... $ (55,127) $(14,356) $(16,547)
11. Add back preferred dividends...........     3,300     3,300     3,300
12. Add back interest, on assumed
 conversion of the Company's 8%
  Convertible Debentures...................     9,200     9,200     9,200
13. Loss from continuing operations........   (42,627)   (1,856)   (4,047)
14. Income (loss) from discontinued
 operations................................  (108,754)    5,788     5,262
15. Net income (loss)...................... $(151,381) $  3,932  $  1,215
16. Weighted average shares outstanding
 (Line 6)..................................    32,019    32,018    32,018
17. Add additional shares issuable upon
 assumed conversion of preferred  shares
 from date of issuance.....................     4,800     4,800     4,800
18. Add additional shares issuable upon
 assumed conversion of the  Company's 8%
 Convertible Debentures....................     3,833     3,833     3,833
19. Adjusted weighted average shares
 outstanding...............................    40,652    40,651    40,651
20. Loss per share from continuing
 operations (13/19)........................ $   (1.05) $   (.05) $   (.10)
21. Income (loss) per share from
 discontinued operations (14/19)...........     (2.67)      .15       .13
22. Net income (loss) per share ........... $   (3.72) $    .10  $    .03
</TABLE>    
- --------
   
(1) Fully diluted earnings (loss) per share are not presented as the assumed
    conversion of the Company's 8% Convertible Debentures is anti-dilutive.
        
(2) Includes preferred stock dividends in arrears of $1,100 from July 1, 1997
    through October 31, 1997.

<PAGE>
 
                                                                    EXHIBIT 23.1
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
   
  We hereby consent to the use in the Prospectus constituting part of this
Registration Statement of our report, dated December 13, 1997, relating to the
consolidated financial statements of Air & Water Technologies Corporation. We
also consent to the reference to our Firm under the captions "Selected
Consolidated Financial Data" and "Experts" in such Prospectus. However, it
should be noted that McGladrey & Pullen, LLP has not prepared or certified such
"Selected Consolidated Financial Data".     
 
                                          McGladrey & Pullen, LLP
 
New York, New York
   
December 19, 1997     

<PAGE>
 
                                                                    EXHIBIT 23.2
                    
                 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS     
   
To Air & Water Technologies Corporation:     
   
  As independent public accountants, we hereby consent to the use of our report
and to all references to our Firm included in or made a part of this
Registration Statement File No. 333-39115.     
                                             
                                          Arthur Andersen LLP     
   
Roseland, New Jersey     
   
December 18, 1997     

<PAGE>
 
                                                                    EXHIBIT 99.2

                                    FORM OF
                           INSTRUCTIONS AS TO USE OF
                     AIR & WATER TECHNOLOGIES CORPORATION
                              RIGHTS CERTIFICATES



                CONSULT THE SUBSCRIPTION AND INFORMATION AGENT,
                    YOUR BANK OR BROKER AS TO ANY QUESTIONS


  The following instructions relate to a Rights Offering (as defined
hereinafter) by Air & Water Technologies Corporation, a Delaware corporation
(the "Company"), to the holders of record ("Recordholders") of its Class A
Common Stock, par value $.001 per share (the "Class A Common Stock"), as
described in the Company's Prospectus dated               , 1997 (the
"Prospectus").  Recordholders of Class A Common Stock at the close of business
on              , 1997 (the "Record Date") are receiving transferable
subscription rights (the "Rights") to subscribe for and purchase additional
shares of Class A Common Stock (the "Underlying Shares") (subject to the
Company's obligation to issue shares of its Class B Common Stock, par value
$.001 per share (the "Class B Common Stock"), in certain circumstances).  An
aggregate of        Underlying Shares are being offered by the Prospectus.
Each Recordholder will receive Rights for each share of Class A Common Stock
owned of record as of the close of business on the Record Date. The Rights will
expire, if not exercised, at 5:00 p.m., New York City time, on           , 1998,
unless extended for up to ten days in the sole discretion of the Company (as it
may be extended, the "Expiration Date").  After the Expiration Date, unexercised
Rights will be null and void. The Company will not be obligated to honor any
purported exercise of Rights received by the Subscription and Information Agent
after 5:00 p.m., New York City time, on the Expiration Date, regardless of when
the documents relating to such exercise were sent, except pursuant to the
Guaranteed Delivery Procedures described below.  The Company may extend the
Expiration Date by giving oral or written notice to the Subscription and
Information Agent on or before the Expiration Date, followed by a press release
no later than 9:00 a.m., New York City time on the next business day after the
previously scheduled Expiration Date.  The Rights will be evidenced by
transferable Rights certificates (the "Rights Certificates"). The Rights will be
traded on the American Stock Exchange up to the close of business on the last
trading day prior to the Expiration Date.  As used herein, the term "Rights
Offering" means the offering of securities pursuant to (i) the Basic
Subscription Privilege (as defined hereinafter), (ii) the Oversubscription
Privilege (as defined hereinafter) and (iii) the Conditional CGE Subscription
(as defined hereinafter).

  Each Right allows the holder to acquire, upon payment of $        in cash
(the "Subscription Price"), one share of Class A Common Stock (the "Basic
Subscription Privilege") (subject to the Company's obligation to issue Class B
Common Stock in certain circumstances).  In addition, each holder of Rights
other than Compagnie Generale des Eaux ("CGE"), the beneficial owner of
% of the outstanding Class A Common Stock, and Anjou International Company, a
wholly owned subsidiary of CGE  ("Anjou"), which elects to exercise the Basic
Subscription Privilege may also subscribe (the "Oversubscription Privilege") at
the Subscription Price for additional shares of Class A Common Stock, up to the
amount offered by the Prospectus, that are not otherwise purchased pursuant to
the exercise of Rights (the "Excess Shares"), subject to availability and
proration as described below and the Company's obligation to issue Class B
Common Stock in certain circumstances.  Shares of Class A Common Stock (subject
to the Company's obligation to issue Class B Common Stock in certain
circumstances) will be available for purchase pursuant to the Oversubscription
Privilege only to the extent that any Underlying Shares are not subscribed for
pursuant to the Basic Subscription Privilege.  The Excess Shares will be
allocated pro rata (subject to the elimination of fractional shares) among those
Rights holders who exercise the Oversubscription Privilege, in proportion, not
to the number of shares requested pursuant to the Oversubscription Privilege,
but to the number of shares each beneficial holder exercising the
Oversubscription Privilege has purchased pursuant to the Basic Subscription
Privilege; provided, however, that if such pro rata allocation results in any
holder being allocated a greater number of Excess Shares than such holder
subscribed for pursuant to the exercise of such holder's Oversubscription
Privilege, then such holder will be allocated only such number of Excess Shares
as such holder
<PAGE>
 
subscribed for and the remaining Excess Shares will be allocated among all other
holders exercising the Oversubscription Privilege on the same pro rata basis
outlined above; such proration will be repeated until all Excess Shares have
been allocated to the full extent of the Oversubscription Privilege; provided
further, however, that CGE will not be allocated any Excess Shares pursuant to
the Conditional CGE Subscription until all other Rights holders exercising their
Oversubscription Privilege have been allocated the number of Excess Shares for
which they oversubscribed. See "The Rights Offering--Subscription Privileges" in
the Prospectus.

          In addition, the Company will issue on a pro rata basis to Rights
holders (other than CGE and Anjou) who purchase shares in the Rights Offering an
aggregate number of transferable warrants (the "Warrants") to purchase shares of
Class A Common Stock at an exercise price of $2.50 per share.  The number of
Warrants actually issued by the Company will depend on the proportion of Rights
exercised by Rights holders (other than CGE and Anjou) in the Rights Offering.
See "Description of Warrants" in the Prospectus.

          CGE, as of the date of the Prospectus, beneficially owns an aggregate
of    shares of Class A Common Stock.  CGE has agreed to exercise in full its
Basic Subscription Privilege to subscribe for     shares of Class A Common
Stock.  In addition, in the event that all Underlying Shares are not purchased
pursuant to the Rights Offering (including pursuant to the Oversubscription
Privilege), CGE will subscribe for and purchase at the Subscription Price an
additional number of shares of Class A Common Stock (the "Conditional CGE
Subscription") (subject to the Company's obligation to issue Class B Common
Stock in certain circumstances).  The total number of shares subscribed for by
CGE and its subsidiaries pursuant to the Conditional CGE Subscription will be no
greater than (i) the total number of shares of Class A Common Stock available to
be purchased by Rights holders (other than CGE and Anjou) in the Rights
Offering, minus (ii) the total number of shares of Class A Common Stock actually
purchased by Rights holders (other than CGE and Anjou) in the Rights Offering,
and in no event will the gross proceeds resulting from CGE's and its
subsidiaries' Basic Subscription Privilege and the Conditional CGE Subscription
exceed $185 million.

          Concurrently with the Rights Offering, the Company is conducting the
Consent Solicitation (as defined in the Prospectus) to eliminate the Change of
Control Provision (as defined the Prospectus) in the indenture governing  the
Company's outstanding 8% Convertible Debentures due 2015 (the "Convertible
Debentures") .  In the event the Requisite Consents (as defined in the
Prospectus) are not obtained prior to the Expiration Date and the exercise of
the Basic Subscription Privilege or Oversubscription Privilege or Conditional
CGE Subscription would cause a person's beneficial ownership of Class A Common
Stock to exceed 74%, the Company shall be obligated to issue to such person only
such number of  shares of Class A Common Stock as would casue such person's
beneficial ownership of the Company's voting power to equal 74% of the
outstanding voting power.  Any additional shares to be issued thereunder shall
be shares of Class B Common Stock.  Prior to the Expiration Date, the Company
intends to effect the Charter Amendment (as defined in the Prospectus), among
other things, to amend the terms of the Class B Common Stock such that the Class
A Common Stock and the Class B Common Stock will be identical in all respects
except that (i) the Class B Common Stock will not be entitled to vote and (ii)
the Class B common Stock will automatically convert into Class A Common stock
immediately upon the earlier of August 1, 2000 or seventy-five days following
the termination (by amendment of the indenture, redemption of the Convertible
Debentures or otherwise) of the Change of Control Provision.  Based upon the
current ownership of Class A Common Stock, the Company does not believe that any
stockholder other than CGE would be issued Class B Common Stock in the event the
Company fails to obtain the Requisite Consents.

No fractional Rights or cash in lieu thereof will be issued or paid. Instead,
the number of Rights distributed to each Recordholder has been rounded up to the
nearest whole number, with such adjustments as may be necessary to ensure that
if all Rights are exercised, gross proceeds to the Company will equal $210
million.

The number of Rights to which you are entitled is printed on the face of your
Rights Certificate. You should indicate your wishes with regard to the exercise,
transfer or sale of your Rights by completing the appropriate form or forms on
your Rights Certificate and returning the certificate to the Subscription and
Information Agent in the envelope provided.

                                       2
<PAGE>
 
YOUR RIGHTS CERTIFICATES, OR NOTICE OF GUARANTEED DELIVERY, AND PAYMENT OF THE
SUBSCRIPTION PRICE, INCLUDING FINAL CLEARANCE OF ANY CHECKS, MUST BE RECEIVED BY
THE SUBSCRIPTION AND INFORMATION AGENT, ON OR BEFORE 5:00 P.M., NEW YORK CITY
TIME, ON THE EXPIRATION DATE.  ONCE A HOLDER OF RIGHTS HAS EXERCISED THE BASIC
SUBSCRIPTION PRIVILEGE OR THE OVERSUBSCRIPTION PRIVILEGE, SUCH EXERCISE MAY NOT
BE REVOKED.  RIGHTS NOT EXERCISED PRIOR TO THE EXPIRATION DATE WILL EXPIRE.

          1.  METHOD OF SUBSCRIPTION--EXERCISE OF RIGHTS

          To exercise Rights, complete Form 1 of your Rights Certificate and
send the properly completed and executed Rights Certificate evidencing such
Rights with any signatures required to be guaranteed so guaranteed, together
with payment in full of the Subscription Price for each Underlying Share
subscribed for pursuant to the Basic Subscription Privilege and the
Oversubscription Privilege, to the Subscription and Information Agent, on or
prior to 5:00 p.m., New York City time, on the Expiration Date.  Payment of the
Subscription Price will be held in a segregated account to be maintained by the
Subscription and Information Agent.  All payments must be made in U.S. dollars
for the full number of Underlying Shares being subscribed for (a) by check or
bank draft drawn upon a U.S. bank or postal or express money order payable to
, as Subscription and Information Agent, or (b) by wire transfer of same-day
funds, to the account maintained by the Subscription and Information Agent for
purposes of accepting subscriptions in the Rights Offering at      ABA No.
, Acct. No.          , (the "Subscription Account").  Any wire transfer should
clearly indicate the identity of the subscriber who is paying the Subscription
Price by the wire transfer.  Payments will be deemed to have been received by
the Subscription and Information Agent only upon (i) clearance of any
uncertified check, (ii) receipt by the Subscription and Information Agent of any
certified check or bank draft drawn upon a U.S. bank or of any postal or express
money order or (iii) receipt of collected funds in the Subscription Account
designated above. IF PAYING BY UNCERTIFIED PERSONAL CHECK, PLEASE NOTE THAT THE
FUNDS PAID THEREBY MAY TAKE AT LEAST FIVE BUSINESS DAYS TO CLEAR. ACCORDINGLY,
RIGHTS HOLDERS WHO WISH TO PAY THE SUBSCRIPTION PRICE BY MEANS OF UNCERTIFIED
PERSONAL CHECK ARE URGED TO MAKE PAYMENT SUFFICIENTLY IN ADVANCE OF THE
EXPIRATION DATE TO ENSURE THAT SUCH PAYMENT IS RECEIVED AND CLEARS BY SUCH DATE
AND ARE URGED TO CONSIDER PAYMENT BY MEANS OF CERTIFIED OR CASHIER'S CHECK,
MONEY ORDER OR WIRE TRANSFER OF FUNDS.

          The Rights Certificate and payment of the Subscription Price, or, if
applicable, Notices of Guaranteed Delivery, as defined below, must be delivered
to the Subscription and Information Agent by one of the methods described below:


                                                           Telephone Number for
By Mail:                        By Hand:                       Confirmation:
 
 
 
 
                             By Overnight Courier:
 
 
 

          Delivery to an address other than those above does not constitute
valid delivery.


          You may also transfer your Rights Certificate to your bank or broker
in accordance with the procedures specified in Section 3(a) below, by making
arrangements for the delivery of funds on your behalf and requesting such bank
or broker to exercise the Rights Certificate on your behalf.  Alternatively, you
may cause a

                                       3
<PAGE>
 
written guarantee substantially in the form of Exhibit A to these instructions
(the "Notice of Guaranteed Delivery"), from a member firm of a registered
national securities exchange or a member of the National Association of
Securities Dealers, Inc. ("NASD"), or from a commercial bank or trust company
having an office or correspondent in the United States or from a bank,
stockbroker, savings and loan association or credit union with membership in an
approved signature guarantee medallion program, pursuant to Rule 17Ad-15 of the
Securities Exchange Act of 1934, as amended, (each, an "Eligible Institution"),
to be received by the Subscription and Information Agent on or prior to the
Expiration Date together with payment in full of the applicable Subscription
Price. Such Notice of Guaranteed Delivery must state your name, the number of
Rights represented by the Rights Certificate or Rights Certificates held by you,
the number of Underlying Shares being subscribed for pursuant to the Basic
Subscription Privilege and the number of Underlying Shares, if any, being
subscribed for pursuant to the Oversubscription Privilege, and will guarantee
the delivery to the Subscription and Information Agent of any properly completed
and executed Rights Certificate or Rights Certificates evidencing such Rights
within three (3) business days following the date of the Notice of Guaranteed
Delivery. If this procedure is followed, the properly completed Rights
Certificate or Rights Certificates evidencing the Rights being exercised, with
any signatures required to be guaranteed so guaranteed, must be received by the
Subscription and Information Agent within three (3) business days following the
date of the Notice of Guaranteed Delivery.  The Notice of Guaranteed Delivery
may be delivered to the Subscription and Information Agent in the same manner as
Rights Certificates at the address set forth above, or may be transmitted to the
Subscription and Information Agent by facsimile transmission (Telecopy No.:
).  Additional copies of the Notice of Guaranteed Delivery may be obtained upon
request from the Subscription and Information Agent at the address, or by
calling the telephone number, set forth above.

          BANKS, BROKERS AND OTHER NOMINEE HOLDERS OF RIGHTS WHO EXERCISE THE
BASIC SUBSCRIPTION PRIVILEGE AND THE OVERSUBSCRIPTION PRIVILEGE ON BEHALF OF
BENEFICIAL OWNERS OF RIGHTS WILL BE REQUIRED TO CERTIFY TO THE SUBSCRIPTION AND
INFORMATION AGENT AND THE COMPANY, IN CONNECTION WITH THE EXERCISE OF THE
OVERSUBSCRIPTION PRIVILEGE AS TO THE AGGREGATE NUMBER OF RIGHTS THAT HAVE BEEN
EXERCISED, AND THE NUMBER OF UNDERLYING SHARES THAT ARE BEING SUBSCRIBED FOR
PURSUANT TO THE OVERSUBSCRIPTION PRIVILEGE, BY EACH BENEFICIAL OWNER OF RIGHTS
(INCLUDING SUCH NOMINEE ITSELF) ON WHOSE BEHALF SUCH NOMINEE HOLDER IS ACTING.
If more Excess Shares are subscribed for pursuant to the Oversubscription
Privilege than are available for sale, Excess Shares will be allocated, as
described above, among beneficial owners exercising the Oversubscription
Privilege in proportion to such owners' exercise of Rights pursuant to the Basic
Subscription Privilege.

          If you exercise less than all of the Rights evidenced by your Rights
Certificate by so indicating in Form 1 of your Rights Certificate, the
Subscription and Information Agent either (i) will issue to you a new Rights
Certificate evidencing the unexercised Rights or (ii) if you so indicate in Form
2 of your Rights Certificate, will transfer the unexercised Rights in accordance
with your instructions.  A new Rights Certificate will be issued to you or
transferred according to your instructions upon the partial exercise of Rights
only if the Subscription and Information Agent receives a properly endorsed
Rights Certificate no later than the fourth business day prior to the Expiration
Date.  After such time and date no new Rights Certificates will be issued.
Accordingly, after such time and date if you exercise less than all of your
Rights you will lose the power to exercise your remaining Rights.  A new Rights
Certificate will be sent by first class mail to you if the Subscription and
Information Agent receives your properly completed Rights Certificate by 11:00
a.m. New York City time, on    , 1998.  Unless you make arrangements with the
Subscription and Information Agent, a new Rights Certificate received by the
Subscription and Information Agent after 11:00 a.m. New York City time, on
, 1998 will be held for pick-up at the Subscription and Information Agent's hand
delivery address provided above.  All deliveries of newly issued Rights
Certificates will be at your own risk.

          If the aggregate Subscription Price paid by you is insufficient to
purchase the number of Underlying Shares subscribed for, or if no number of
Underlying Shares to be purchased is specified, then you will be deemed to have
exercised the Basic Subscription Privilege to purchase Underlying Shares to the
full extent of the payment tendered.  If the aggregate Subscription Price paid
by you exceeds the amount necessary to purchase the number of Underlying Shares
for which you have indicated an intention to subscribe  (such excess being the

                                       4
<PAGE>
 
"Subscription Excess"), then you will be deemed to have exercised the
Oversubscription Privilege to the full extent of the excess payment tendered, to
purchase, to the extent available, that number of whole shares of Class A Common
Stock (subject to the Company's obligation to issue shares of Class B Common
Stock in certain circumstances) equal to the quotient obtained by dividing the
Subscription Excess by the Subscription Price.  Any remaining amount shall be
returned to you by mail without interest or deduction as soon as practicable
after the Expiration Date and after all prorations and adjustments contemplated
by the terms of the Rights Offering have been effected.

          2.  ISSUANCE OF COMMON STOCK AND WARRANTS

          The following deliveries and payments will be made to the address
shown on the face of your Rights Certificate unless you provide instructions to
the contrary in Form 3 of your Rights Certificate.

          (a)  Basic Subscription Privilege. As soon as practicable after the
Expiration Date and the valid exercise of Rights, the Subscription and
Information Agent will mail to each exercising Rights holder certificates
representing shares of Class A Common Stock and shares of Class B Common Stock,
if any, purchased pursuant to the Basic Subscription Privilege.

          (b)  Oversubscription Privilege. As soon as practicable after the
Expiration Date and after all prorations and adjustments contemplated by the
terms of the Rights Offering have been effected, the Subscription and
Information Agent will mail to each Rights holder who validly exercises the
Oversubscription Privilege certificates representing the number of shares of
Class A Common Stock and shares of Class B Common Stock, if any, allocated to
such Rights holder pursuant to the Oversubscription Privilege. See "The Rights
Offering--Subscription Privileges--Oversubscription Privilege" in the
Prospectus.

          (c)  Issuance of Warrants. As soon as practicable following the
Expiration Date but in no event later than the date on which certificates
representing Underlying Shares purchased pursuant to the Basic Subscription
Privilege and Oversubscription Privilege are delivered to subscribers, the
Subscription and Information Agent will mail certificates representing the
appropriate number of Warrants to each Rights holder entitled to receive
Warrants.

          (d)  Cash Payments. As soon as practicable after the Expiration Date
and after all prorations and adjustments contemplated by the terms of the Rights
Offering have been effected, the Subscription and Information Agent will mail to
each Rights holder who exercises the Oversubscription Privilege any excess
amount, without interest or deduction, received in payment of the Subscription
Price for Excess Shares that are subscribed for by such Rights holder but not
allocated to such Rights holder pursuant to the Oversubscription Privilege.

          3.  SALE OR TRANSFER OF RIGHTS

          (a)  Sale of Rights Through a Bank or Broker. To sell all Rights
evidenced by a Rights Certificate through your bank or broker, so indicate on
Form 2 and deliver your properly completed and executed Rights Certificate to
your bank or broker. Your Rights Certificate should be delivered to your bank or
broker in ample time for it to be exercised.  If Form 2 is completed without
designating a transferee, the Subscription and Information Agent may thereafter
treat the bearer of the Rights Certificate as the absolute owner of all of the
Rights evidenced by such Rights Certificate for all purposes, and the
Subscription and Information Agent shall not be affected by any notice to the
contrary. Because your bank or broker cannot issue Rights Certificates, if you
wish to sell less than all of the Rights evidenced by a Rights Certificate,
either you or your bank or broker must instruct the Subscription and Information
Agent as to the action to be taken with respect to the Rights not sold, or you
or your bank or broker must first have your Rights Certificate divided into
Rights Certificates of appropriate denominations by following the instructions
in Section 4 of these instructions. The Rights Certificates evidencing the
number of Rights you intend to sell can then be transferred by your bank or
broker in accordance with the instructions in this Section 3(a).

          (b)  Transfer of Rights to a Designated Transferee. To transfer all of
your Rights to a transferee other than a bank or broker, you must complete Form
2 in its entirety, execute the Rights Certificate and

                                       5
<PAGE>
 
have your signature guaranteed by an Eligible Institution. A Rights Certificate
that has been properly transferred in its entirety may be exercised by a new
holder without having a new Rights Certificate issued. In order to exercise, or
otherwise take action with respect to, such a transferred Rights Certificate,
the new holder should deliver the Rights Certificate, together with payment of
the applicable Subscription Price (with respect to the exercise of both the
Basic Subscription Privilege and the Oversubscription Privilege) and complete
separate instructions signed by the new holder, to the Subscription and
Information Agent in ample time to permit the Subscription and Information Agent
to take the desired action. Because only the Subscription and Information Agent
can issue Rights Certificates, if you wish to transfer less than all of the
Rights evidenced by your Rights Certificate to a designated transferee, you must
instruct the Subscription and Information Agent as to the action to be taken
with respect to the Rights not sold or transferred, or you must divide your
Rights Certificate into Rights Certificates of appropriate smaller denominations
by following the instructions in Section 4 below. The Rights Certificate
evidencing the number of Rights you intend to transfer can then be transferred
by following the instructions in this Section 3(b).

          Rights holders wishing to transfer a portion of their Rights (but not
fractional Rights) should allow a sufficient amount of time prior to the
Expiration Date for (i) the transfer instructions to be received and processed
by the Subscription and Information Agent, (ii) a new Rights Certificate to be
issued and transmitted to the transferee or transferees with respect to
transferred Rights, and to the transferor with respect to retained Rights, if
any, and (iii) the Rights evidenced by such new Rights Certificates to be
exercised or sold by the recipients thereof.  Neither the Company nor the
Subscription and Information Agent shall have any liability to a transferee or
transferor of Rights if Rights Certificates are not received in time for
exercise or sale prior to the Expiration Date.

          The Company will pay all fees and expenses of the Subscription and
Information Agent and has also agreed to indemnify the Subscription and
Information Agent from certain liabilities which it may incur in connection with
the Rights Offering.  All commissions, fees and other expenses (including
brokerage commissions and transfer taxes) incurred in connection with the
purchase, sale or exercise of Rights will be for the account of the transferor
of the Rights, and none of such commissions, fees or expenses will be paid by
the Company or the Subscription and Information Agent.

          4.  DIVISION OF RIGHTS CERTIFICATE INTO SMALLER DENOMINATIONS

          To have a Rights Certificate divided into smaller denominations, send
your Rights Certificate, together with complete separate instructions (including
specification of the denominations into which you wish your Rights to be
divided) signed by you, to the Subscription and Information Agent, allowing a
sufficient amount of time for new Rights Certificates to be issued and returned
so that they can be used prior to the Expiration Date. Alternatively, you may
ask a bank or broker to effect such actions on your behalf. Your signature must
be guaranteed by an Eligible Institution if any of the new Rights Certificates
are to be issued in a name other than that in which the old Rights Certificate
was issued. Rights Certificates may not be divided into fractional Rights, and
any instruction to do so will be rejected. AS A RESULT OF DELAYS IN THE MAIL,
THE TIME OF THE TRANSMITTAL, THE NECESSARY PROCESSING TIME AND OTHER FACTORS,
YOU OR YOUR TRANSFEREE MAY NOT RECEIVE SUCH NEW RIGHTS CERTIFICATES IN TIME TO
ENABLE THE RIGHTS HOLDER TO COMPLETE A SALE OR EXERCISE BY THE EXPIRATION DATE.
NEITHER THE COMPANY NOR THE SUBSCRIPTION AND INFORMATION AGENT WILL BE LIABLE TO
EITHER A TRANSFEROR OR TRANSFEREE FOR ANY SUCH DELAYS.

          5.  EXECUTION.

          (a)  Execution by Registered Holder. The signature on the Rights
Certificate must correspond with the name of the registered holder exactly as it
appears on the face of the Rights Certificate without any alteration or change
whatsoever. Persons who sign the Rights Certificate in a representative or other
fiduciary capacity must indicate their capacity when signing and, unless waived
by the Subscription and Information Agent

                                       6
<PAGE>
 
is its sole and absolute discretion, must present to the Subscription and
Information Agent satisfactory evidence of their authority to so act.

     (b)  Execution by Person Other than Registered Holder. If the Rights
Certificate is executed by a person other than the holder named on the face of
the Rights Certificate, proper evidence of authority of the person executing the
Rights Certificate must accompany the same unless, for good cause, the
Subscription and Information Agent dispenses with proof of authority.

     (c)  Signature Guarantees. Your signature must be guaranteed by an Eligible
Institution if (i) you wish to transfer your Rights, as specified in Section
3(b) above, to a transferee other than a bank or broker, (ii) if you wish a new
Rights Certificate to be issued in a name other than that in which the old
Rights Certificate was issued, as specified in Section 4 above, or (iii) if you
specify special payment or delivery instructions pursuant to Form 3.

          6.  METHOD OF DELIVERY.

          THE METHOD OF DELIVERY OF RIGHTS CERTIFICATES AND PAYMENT OF THE
SUBSCRIPTION PRICE TO THE SUBSCRIPTION AND INFORMATION AGENT WILL BE AT THE
ELECTION AND RISK OF THE RIGHTS HOLDER, BUT, IF SENT BY MAIL, IT IS RECOMMENDED
THAT SUCH CERTIFICATES AND PAYMENTS BE SENT BY REGISTERED MAIL, PROPERLY
INSURED, WITH RETURN RECEIPT REQUESTED, AND THAT A SUFFICIENT NUMBER OF DAYS BE
ALLOWED TO ENSURE DELIVERY TO THE SUBSCRIPTION AND INFORMATION AGENT AND THE
CLEARANCE OF PAYMENT PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION
DATE.  BECAUSE UNCERTIFIED PERSONAL CHECKS MAY TAKE AT LEAST FIVE BUSINESS DAYS
TO CLEAR, YOU ARE STRONGLY URGED TO PAY, OR ARRANGE FOR PAYMENT, BY MEANS OF
CERTIFIED OR CASHIER'S CHECK, MONEY ORDER OR WIRE TRANSFER OF FUNDS.

          7.  SPECIAL PROVISIONS RELATING TO THE DELIVERY OF RIGHTS THROUGH THE
              DEPOSITORY TRUST COMPANY.

          In the case of Rights that are held of record through the Depository
Trust Company or the Philadelphia Depositary Trust Company (each, a "Book-Entry
Transfer Facility"), exercises of the Basic Subscription Privilege and the
Oversubscription Privilege may be effected by instructing the Book-Entry
Transfer Facility to transfer Rights from the Book-Entry Transfer Facility
account of such holder to the Book-Entry Transfer Facility account of the
Subscription and Information Agent, together with certification as to the
aggregate number of Rights exercised and the number of Underlying Shares thereby
subscribed for pursuant to the Basic Subscription Privilege and the
Oversubscription Privilege by each beneficial owner of Rights on whose behalf
such nominee is acting, and payment of the Subscription Price for each share of
Class A Common Stock (subject to the Company's obligation to issue Class B
Common Stock in certain circumstances) subscribed for pursuant to the Basic
Subscription Privilege and Oversubscription Privilege.

          8.  SUBSTITUTE FORM W-9.

          Each Rights holder who elects to exercise Rights should provide the
Subscription and Information Agent with a correct Taxpayer Identification Number
(TIN) on Substitute Form W-9, a copy of which is included as Exhibit B hereto.
Additional copies of Substitute Form W-9 may be obtained upon request from the
Subscription and Information Agent at the address or by calling the telephone
number indicated above. Failure to provide the information on the form may
subject such holder to a $50.00 penalty for each such failure and to 31% federal
income tax withholding with respect to dividends that may be paid by the Company
on shares of Class A Common Stock (or Class B Common Stock pursuant to the
Company's obligation to issue Class B Common Stock in certain circumstances)
purchased upon the exercise of Rights (for those holders exercising Rights).

                                       7
<PAGE>
 
                                                                       EXHIBIT A


                         Notice of Guaranteed Delivery
<PAGE>
 
                                                                       EXHIBIT B


                                      W-9

<PAGE>
 
                                                                    EXHIBIT 99.3

                                    FORM OF
                         NOTICE OF GUARANTEED DELIVERY

                                      FOR

                              RIGHTS CERTIFICATES

                                   ISSUED BY

                     AIR & WATER TECHNOLOGIES CORPORATION



     This form, or one substantially equivalent hereto, must be used to exercise
     Rights pursuant to the Rights Offering described in the Prospectus dated
                    , 1997 (the "Prospectus") of Air & Water Technologies
     Corporation, a Delaware corporation (the "Company"), if a holder of Rights
     cannot deliver the certificate(s) evidencing the Rights (the "Rights
     Certificate(s)"), to the Subscription and Information Agent listed below
     (the "Subscription and Information Agent") at or prior to 5:00 p.m. New
     York City time on                  , 1998, unless such time is extended by
     the Company as described in the Prospectus (as it may be extended, the
     "Expiration Date"). Such form must be delivered by hand or sent by
     telegram, facsimile transmission, first class mail or overnight courier to
     the Subscription and Information Agent, and must be received by the
     Subscription and Information Agent on or prior to the Expiration Date.  See
     "The Rights Offering--Method of Subscription--Exercise of Rights" in the
     Prospectus.  Payment of the Subscription Price of $       per share for
     each share of the Company's Class A Common Stock (subject to the Company's
     obligation to issue shares of Class B Common Stock in certain
     circumstances) subscribed for upon exercise of such Rights must be received
     by the Subscription and Information Agent in the manner specified in the
     Prospectus at or prior to 5:00 p.m. New York City time on the Expiration
     Date even if the Rights Certificate(s) evidencing such Rights is (are)
     being delivered pursuant to the Guaranteed Delivery Procedures thereof.

                  The Subscription and Information Agent is:
 
                         [                          ]
 
If by Mail or Telegram:          If by Hand:        If by Overnight Courier:
 
 


                           Facsimile Transmission:


 
                            Confirm by Telephone:





DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE OR 
TRANSMISSION OF THIS INSTRUMENT VIA FACSIMILE OTHER THAN AS SET FORTH ABOVE 
DOES NOT CONSTITUTE A VALID DELIVERY.
<PAGE>
 
Ladies and Gentlemen:

  The undersigned hereby represents that the undersigned is the holder of Rights
Certificate(s) representing            Rights and that such Rights
Certificate(s) cannot be delivered to the Subscription and Information Agent at
or before 5:00 p.m., New York City time on the Expiration Date. Upon the terms
and subject to the condition set forth in the Prospectus, receipt of which is
hereby acknowledged, the undersigned hereby elects to exercise (i) the Basic
Subscription Privilege to subscribe for            share(s) of Class A Common
Stock per Right (subject to the Company's obligation to issue shares of Class B
Common Stock in certain circumstances) with respect to each of
Rights represented by such Rights Certificate(s) and (ii) the Oversubscription
Privilege relating to such Rights, to the extent that Excess Shares (as defined
in the Prospectus) are available therefor, for an aggregate of up to
Excess Shares, subject to availability and proration and the Company's
obligation to issue Class B Common Stock in certain circumstances. The
undersigned understands that payment of the Subscription Price of $         per
share for each share of Class A Common Stock (subject to the Company's
obligation to issue shares of Class B Common Stock in certain circumstances)
subscribed for pursuant to the Basic Subscription Privilege and Oversubscription
Privilege must be received by the Subscription and Information Agent at or
before 5:00 p.m., New York City time, on the Expiration Date and represents that
such payment, in the aggregate amount of $           either (check appropriate
box):

   [_] is being delivered to the Subscription and Information Agent herewith

                               or

   [_] has been delivered separately to the Subscription and Information Agent

  in the manner set forth below (check appropriate box and complete information
  relating thereto):

   [_] Wire transfer of funds
       -  Name of transferor institution:______________________________
       -  Date of transfer:____________________________________________
       -  Confirmation number (if available):__________________________
 
   [_] Uncertified check (Payment by uncertified check will not be deemed to
       have been received by the Subscription and Information Agent until such
       check has cleared. Holders paying by such means are urged to make payment
       sufficiently in advance of the Expiration Date to ensure that such
       payment clears by such date.)
 
   [_] Certified check
 
   [_] Bank draft (cashier's check)
 
   [_] Money order
       -  Name of maker:_______________________________________________
       -  Date of check, draft or money order:_________________________
       -  Check, draft or money order number:__________________________
       -  Bank on which check is drawn or issuer of money order:_______
 
Signature(s) ________________________   Address______________________________
_____________________________________   _____________________________________
Name(s)______________________________   _____________________________________
_____________________________________   Area code and Tel. no(s)_____________
        (Please type or print)

Rights Certificate
No(s). (if available) _______________________________________________________
 


                             GUARANTEE OF DELIVERY
          (NOT TO BE USED FOR RIGHTS CERTIFICATE SIGNATURE GUARANTEE)


       The undersigned, a member firm of a registered national securities
     exchange or of the National Association of Securities Dealers, Inc. or a
     commercial bank or trust company having an office or correspondent in the
     United States, or a bank, stockbroker, savings and loan association or
     credit union with membership in an approved signature guarantee medallion
     program, pursuant to Rule 17Ad-15 of the Securities Act of 1934, as
     amended, guarantees that the undersigned will deliver to the Subscription
     and Information Agent the certificates representing the Rights being
     exercised hereby, with any required signature guarantee and any other
     required documents, all within three business days after the date hereof.


_____________________________________   Dated :
_____________________________________
_____________________________________   _____________________________________
            (Address)                               (Name of Firm)
 
_____________________________________   _____________________________________
  (Area Code and Telephone Number)              (Authorized Signature)

                                       2
<PAGE>
 
     The institution which completes this form must communicate the guarantee to
     the Subscription and Information Agent and must deliver the Rights
     Certificate(s) to the Subscription and Information Agent within the time
     period shown herein. Failure to do so could result in a financial loss to
     such institution.

                                       3

<PAGE>

                                                                    EXHIBIT 99.4

                           IMPORTANT TAX INFORMATION

This tax information is provided in connection with the Prospectus of Air &
Water Technologies Corporation dated               , 1997 (the "Prospectus").
Capitalized terms used herein but not otherwise defined herein shall have the
meanings assigned to such terms in the Prospectus.

  Under the United States Federal income tax laws, dividend payments that may be
made by the Company on shares of Class A Common Stock and Class B Common Stock,
if any, issued upon the exercise of Rights may be subject to backup withholding.
Generally such payments will be subject to backup withholding unless the holder
(i) is exempt from backup withholding or (ii) furnishes the payer with its
correct  taxpayer identification number (TIN) and that the number provided is
correct and further certifies that such holder is not subject to backup
withholding as a result of a failure to report all interest or dividend income.
Each Rights holder who exercises Rights and wishes to avoid backup withholding
should provide the Subscription and Information Agent, as the Company's agent in
respect of exercised Rights (the "requester"), with such Rights holder's correct
taxpayer identification number (or with a certification that such Rights holder
is awaiting a taxpayer identification number) and with a certification that such
Rights holder is not subject to backup withholding by completing Substitute Form
W-9 below.

Certain Rights holders (including, among others, all corporations and certain
foreign individuals) are exempt from these backup withholding and reporting
requirements. In general, in order for a foreign individual to qualify as an
exempt recipient, that Rights holder must submit a statement, signed under the
penalties of perjury, attesting to that individual's exempt status. Such
statements may be obtained from the Subscription and Information Agent. Exempt
Rights holders, while not required to file Substitute Form W-9, should file
Substitute Form W-9 to avoid possible erroneous backup withholding. See the
enclosed GUIDELINES FOR REQUEST FOR TAXPAYER IDENTIFICATION NUMBER AND
CERTIFICATION ON SUBSTITUTE FORM W-9 for additional instructions.

If backup withholding applies, the Company or the Subscription and Information
Agent, as the case may be, will be required to withhold 31% of any such dividend
payments made to the Rights holder.  Backup withholding is not an additional
tax. Rather, the amount of backup withholding is treated, like any other
withheld amounts, as an advance payment of the person's tax liability, and the
tax liability of persons subject to backup withholding will be reduced by the
amount of tax withheld. If withholding results in an overpayment of taxes, a
refund may be obtained.

PURPOSE OF SUBSTITUTE FORM W-9

To prevent backup withholding on dividend payments, the Rights holder is
required to notify the Subscription and Information Agent of such Rights
holder's correct taxpayer identification number by completing Substitute Form W-
9 below and certifying on Substitute Form W-9 that the taxpayer identification
number provided is correct (or that such Rights holder is awaiting a taxpayer
identification number).  In addition, the Rights holder is required to certify
on Substitute Form W-9 that it is (i) exempt from backup withholding, or (ii)
not subject to backup withholding due to prior under-reporting of interest or
dividend income, or (iii) the Internal Revenue Service (the "IRS") has notified
it that it is no longer subject to backup withholding.

WHAT NUMBER TO GIVE THE SUBSCRIPTION AND INFORMATION AGENT

The Rights holder is required to give the Subscription and Information Agent the
taxpayer identification number of the record owner of the Rights. If such record
owner is an individual, the TIN is the taxpayer's social security number.  For
most other entities, the taxpayer identification number is the employer
identification number. If the Rights are in more than one name or are not in the
name of the actual owner, consult the enclosed GUIDELINES FOR REQUEST FOR
TAXPAYER IDENTIFICATION NUMBER AND CERTIFICATION ON SUBSTITUTE FORM W-9 for
additional guidelines on what number to report. If the Subscription and
Information Agent is not provided with the correct taxpayer identification
number in connection with such payments, the Rights holder may be subject to a
$50.00 penalty imposed by the IRS.
<PAGE>
 
             REQUESTER'S NAME: [SUBSCRIPTION AND INFORMATION AGENT]


              GIVE FORM TO THE REQUESTER.  DO NOT SEND TO THE IRS.

<TABLE>
<CAPTION>
                                          Name: (If a joint account or you changed your name, see enclosed Guidelines.)
 
                             -------------------------------------------------------------------------------------------------------

                                                             Business name, if different from above.
 
                             -------------------------------------------------------------------------------------------------------

                             Check appropriate box: [ ] Individual/Sole Proprietor [ ] Corporation [ ] Partnership [ ] Other _______
 
                             -------------------------------------------------------------------------------------------------------

                                                         Address (number, street, and apt. or suite no.)
 
                             -------------------------------------------------------------------------------------------------------

                                                                    City, state and ZIP code

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

        SUBSTITUTE                          PART I--TAXPAYER IDENTIFICATION NUMBER (TIN).                    PART II--FOR PAYEES
                                                                                                             EXEMPT FROM BACKUP
                                                                                                            WITHHOLDING (See the
                                                                                                             enclosed Guidelines)
                             ---------------------------------------------------------------------------
<S>                          <C>                                    <C>                                   <C>
Form W-9                     Enter your TIN in the appropriate             Social Security Number
Department of the Treasury   box. For most individuals, this is
Internal Revenue Service     your social security number (SSN).     ------------------------------------
                             For most other entities, it is your
                             employer identification number            Employer Identification Number
                             (EIN). If you do not have a number,
                             see HOW TO GET A TIN in the enclosed   ------------------------------------
                             Guidelines.
 
 
Payer's Request For          NOTE: If the account is in more than
 Taxpayer Identification     one name, see the chart in the
 Number (TIN)                enclosed Guidelines to determine
                             what number to give.
</TABLE>

PART III--CERTIFICATION
 
Under penalties of perjury, I certify that:
 
1.  THE NUMBER SHOWN ON THIS FORM IS MY CORRECT TAXPAYER IDENTIFICATION NUMBER
    (OR I AM WAITING FOR A NUMBER TO BE ISSUED TO ME), AND
 
2.  I AM NOT SUBJECT TO BACKUP WITHHOLDING BECAUSE: (A) I AM EXEMPT FROM BACKUP
    WITHHOLDING; OR (B) I HAVE NOT BEEN NOTIFIED BY THE INTERNAL REVENUE SERVICE
    (IRS) THAT I AM SUBJECT TO BACKUP WITHHOLDING AS A RESULT OF A FAILURE TO
    REPORT ALL INTEREST OR DIVIDENDS; OR (C) THE IRS HAS NOTIFIED ME THAT I AM
    NO LONGER SUBJECT TO BACKUP WITHHOLDING.
 
CERTIFICATION INSTRUCTIONS--You must cross out item 2 above if you have been
notified by the IRS that you are subject to backup withholding because you have
failed to report all interest and dividends on your tax return.  However, if
after being notified by the IRS that you were subject to backup withholding you
received another notification from the IRS that you are no longer subject to
backup withholding, do not cross out item 2.
 
THE INTERNAL REVENUE SERVICE DOES NOT REQUIRE YOUR CONSENT TO ANY PROVISION OF
THIS DOCUMENT OTHER THAN THE CERTIFICATIONS REQUIRED TO AVOID BACKUP
WITHHOLDING.

SIGNATURE                                                 DATE
          -----------------------------------------------      -----------------


     NOTE: FAILURE TO COMPLETE THIS FORM MAY RESULT IN BACKUP WITHHOLDING
     OF 31% OF ANY PAYMENTS MADE TO YOU. PLEASE REVIEW ENCLOSED GUIDELINES
      FOR REQUEST FOR TAXPAYER IDENTIFICATION NUMBER AND CERTIFICATION ON
                  SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.
<PAGE>
 
                                GUIDELINES FOR
         REQUEST FOR TAXPAYER IDENTIFICATION NUMBER AND CERTIFICATION
                            ON SUBSTITUTE FORM W-9


WHAT NAME AND NUMBER TO GIVE THE REQUESTER

  NAME

  If you are an individual, you must generally enter the name shown on your
Social Security card.  However, if you have changed your last name, for
instance, due to marriage, without informing the Social Security Administration
of the name change, enter your first name, the last name shown on your Social
Security card, and your new last name.  If the account is in joint names, list
first and then circle the name of the person or entity whose number you enter in
Part I of the form.

  Sole Proprietor--You must enter your INDIVIDUAL NAME as shown on your Social
Security card.  You may enter your business, trade or "doing business as" name
on the BUSINESS NAME line.

  Other Entities--Enter the business name as shown on required Federal income
tax documents.  This name should match the name shown on the charter or other
legal document creating the entity.  You may enter any business, trade or "doing
business as" name on the business name line.

  TAXPAYER IDENTIFICATION NUMBER (TIN)

  You must enter your taxpayer identification number in the appropriate box.  If
you are a resident alien and you do not have and are not eligible to get a
Social Security number, your taxpayer identification number is your IRS
individual taxpayer identification number (ITIN).  Enter it in the Social
Security number box.  If you do not have an individual taxpayer identification
number, see HOW TO GET A TIN below.  If you are a sole proprietor and you have
an employer identification number, you may enter either your Social Security
number or employer identification number.  However, using your employer
identification number may result in unnecessary notices to the requester.

  Social Security numbers (SSN's) have nine digits separated by two hyphens:
i.e. 000-00-0000. Employer identification numbers (EIN's) have nine digits
separated by only one hyphen: i.e. 00-0000000.

  The table below will help determine the number to give the requester.

<TABLE>
<CAPTION>
FOR THIS TYPE OF ACCOUNT:                                                    GIVE NAME AND SSN OF:
<S>                                                                          <C>
1.  Individual                                                               The individual
2.  Two or more individuals (joint account)                                  The actual owner of the account or, if
                                                                             combined funds, the first individual on the
                                                                             account/(1)/
3.  Custodian account of a minor (Uniform Gift to Minors Act)                The minor/(2)/
4.  a.  The usual revocable savings trust (grantor is also trustee)          The grantor-trustee/(1)/
    b.  The so-called trust account that is not a legal or valid             The actual owner/(1)/
        trust under State law
5.  Sole proprietorship                                                      The owner/(3)/


FOR THIS TYPE OF ACCOUNT:                                                    GIVE NAME AND EIN OF:

6.  Sole proprietorship                                                      The owner/(3)/
7.  A valid trust, estate or pension trust                                   Legal entity/(4)/
8.  Corporation                                                              The corporation
9.  Association, club, religious, charitable, educational or other           The organization
    tax-exempt organization
10. Partnership                                                              The partnership
11. A broker or registered nominee                                           The broker or nominee
</TABLE>

                                       3
<PAGE>
 
<TABLE>
<CAPTION>
FOR THIS TYPE OF ACCOUNT:                                                    GIVE NAME AND SSN OF:
<S>                                                                          <C>
12. Account with the Department of Agriculture in the name of a              The public entity
    public entity (such as a State or local government, school
    district, or prison) that receives agricultural program payments
</TABLE>

(1) List first and circle the name of the person whose number you furnish.  If
    only one person on a joint account has a Social Security number, that
    person's number must be furnished.

(2) Circle the minor's name and furnish the minor's Social Security number.

(3) You must show your individual name, but you may also enter your business or
    "doing business as" name.  You may use either your Social Security number or
    employer identification number (if you have one).

(4) List first and circle the name of the legal trust, estate or pension trust.
    (Do not furnish the taxpayer identification number of the personal
    representative or trustee unless the legal entity itself is not designated
    in the account title.)

NOTE: If no name is circled when more than one name is listed, the number will
be considered to be that of the first name listed.


  HOW TO GET A TIN

  If you do not have a taxpayer identification number, apply for one
immediately.  To apply for a Social Security number, get FORM SS-5, Application
for a Social Security Number Card, from your local Social Security
Administration Office.  Get FORM W-7 to apply for an individual taxpayer
identification number or FORM SS-4, Application for Employer Identification
Number, to apply for an employer identification number.  You can get Forms W-7
and SS-4 from the IRS.

  If you do not have a taxpayer identification number, write "Applied For" in
the space for the taxpayer identification number, sign and date the form, and
give it to the requester.   For interest and dividend payments and certain
payments made with respect to readily tradable instruments, you will generally
have 60 days to get a taxpayer identification number and give it to the
requester.  Other payments are subject to backup withholding.

  NOTE:  Writing "Applied For" means that you have already applied for a
taxpayer identification number OR that you intend to apply for one soon.


EXEMPTION FROM BACKUP WITHHOLDING

  PAYEES EXEMPT FROM BACKUP WITHHOLDING

  Individuals (including sole proprietors) are NOT exempt from backup
withholding.  Corporations are exempt from backup withholding for certain
payments, such as interest and dividends.
 
  For interest and dividends, the following payees are exempt from backup
withholding:

  .  A corporation.

  .  A financial institution.

  .  An organization exempt from tax under section 501(a) of the Internal
     Revenue Code of 1986, as amended (the "Code"), an individual retirement
     account (IRA), or a custodial account under section 403(b)(7) of the Code
     if the account satisfies the requirements of section 401(f)(2) of the Code.

  .  The United States or any of its agencies or instrumentalities.

  .  A state, the District of Columbia, a possession of the United States, or
     any of their political subdivisions or instrumentalities.

  .  A foreign government or any of its political subdivisions, agencies, or
     instrumentalities.

  .  An international organization or any of its agencies or instrumentalities.

                                       4
<PAGE>
 
  .  A dealer in securities or commodities required to register in the United
     States, the District of Columbia, or a possession of the United States.

  .  A real estate investment trust.

  .  A common trust fund operated by a bank under section 584(a) of the Code.

  .  An entity registered at all times during the tax year under the Investment
     Company Act of 1940.

  .  A foreign central bank of issue.
 
  .  A middleman known in the investment community as a nominee or who is listed
     in the most recent publication of the American Society of Corporate
     Secretaries, Inc., Nominee List.

  .  A trust exempt from tax under section 664 of the Code or described in
     section 4947 of the Code.
 

  PAYMENTS EXEMPT FROM BACKUP WITHHOLDING

  Dividends and patronage dividends that generally are exempt from backup
withholding include:

  .  Payments to nonresident aliens subject to withholding under section 1441 of
     the Code.

  .  Payments to partnerships not engaged in a trade or business in the United
     States and that have at least one nonresident alien partner.

  .  Payments of patronage dividends not paid in money.

  .  Payments made by certain foreign organizations.

  .  Payments made by an ESOP pursuant to section 404(k) of the Code.
 
  Interest payments that are generally exempt from backup withholding include:

  .  Payments of interest on obligations issued by individuals.  Note, however,
     that such a payment may be subject to backup withholding if this interest
     is $600 or more and is paid in the course of the payer's trade or business
     and. you have not provided your correct taxpayer identification number or
     you have provided an incorrect taxpayer identification number to the payer.

  .  Payments of tax-exempt interest (including exempt-interest dividends under
     section 852 of the Code).

  .  Payments described in section 6049(b)(5) of the Code to nonresident aliens.

  .  Payments on tax-free covenant bonds under section 1451 of the Code.

  .  Payments made by certain foreign organizations.

  Payments that are not subject to information reporting are also not subject to
backup withholding. For details, see sections 6041, 6041A, 6042, 6044, 6045,
6049, 6050A and 6050N of the Code, and their regulations.

  If you are exempt from backup withholding, you should still complete and file
Substitute Form W-9 to avoid possible erroneous backup withholding. ENTER YOUR
CORRECT TAXPAYER IDENTIFICATION NUMBER IN PART I, WRITE "EXEMPT" IN PART II, AND
SIGN AND DATE THE FORM AND RETURN IT TO THE REQUESTER.

     If you are a nonresident alien or a foreign entity not subject to backup
withholding, give the requester a completed FORM W-8, Certificate of Foreign
Status.


PRIVACY ACT NOTICE

  Section 6109 of the Code requires you to give your correct taxpayer
identification number to persons who must file information returns with the IRS
to report interest, dividends and certain other income paid to you. The IRS uses
the numbers for identification purposes and to help verify the accuracy of your
tax return. The IRS may also provide this information to the Department of
Justice for civil and criminal litigation and to cities, states, and the
District of Columbia to carry out their tax laws.  You must provide your
taxpayer identification number whether or not you are required to file a tax
return. Payers

                                       5
<PAGE>
 
must generally withhold 31% of taxable interest, dividends and certain other
payments to a payee who does not furnish a taxpayer identification number to a
payer. Certain penalties may also apply.


PENALTIES

  (1) FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER. If you fail to furnish
your correct taxpayer identification number to a requester, you are subject to a
penalty of $50.00 for each such failure unless your failure is due to reasonable
cause and not to willful neglect.

  (2) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING. If you
make a false statement with no reasonable basis which results in no backup
withholding, you are subject to a $500.00 penalty.

  (3) CRIMINAL PENALTY FOR FALSIFYING INFORMATION. Willfully falsifying
certifications or affirmations may subject you to criminal penalties including
fines and/or imprisonment.


            FOR ADDITIONAL INFORMATION, CONTACT YOUR TAX CONSULTANT
                        OR THE INTERNAL REVENUE SERVICE.

                                       6


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