EASTERN ENVIRONMENTAL SERVICES INC
8-K, 1998-05-27
REFUSE SYSTEMS
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, DC  20549


                                  ___________



                                    FORM 8-K

                                 CURRENT REPORT


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

                                        


Date of Report (Date of earliest event reported):  May 27, 1998



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

<TABLE>
<CAPTION>
 
 
<S>                                         <C>           <C>
          Delaware                              0-16102           59-2840783
- ------------------------------------------      -------        ----------------
(State or other jurisdiction                  (Commission       (IRS Employer
  of Incorporation)                           File Number)    Identification #)
 
       1000 Crawford Place
       Mt. Laurel, New Jersey                     08054
- ------------------------------------------      -------
(Address of principal executive offices)       (Zip Code)
</TABLE>

Registrant's telephone number, including area code:(609) 235-6009
                                                   --------------



                                Not Applicable
         -------------------------------------------------------------
         (Former name or former address, if changed since last report)
<PAGE>
 
ITEM 5.  Other Events.
         -------------

     Pursuant to a Registration Statement on Form S-3 (Registration No. 333-
49613), as amended (the "Registration Statement"), filed with the Securities and
Exchange Commission (the "Commission") under the Securities Act of 1933, as
amended (the "Act"), and declared effective by the Commission on May 1, 1998,
the Registrant registered shares of common stock, shares of preferred stock,
depository shares, debt securities and warrants to purchase debt securities,
depository shares, preferred stock or common stock of the Registrant
(collectively, the "Registered Securities"), to be offered to the public on a
delayed or continuous basis pursuant to Rule 415 under the Act, at an aggregate
initial offering price not to exceed U.S. $400 million.  Reference is made to
the Registration Statement for further information concerning the terms of the
Registered Securities and the offering thereof.

     On May 20, 1998, an Underwriting Agreement (the "Underwriting Agreement")
was executed by the Registrant, certain stockholders of the Registrant (the
"Selling Stockholders") and Smith Barney, Inc., CIBC Oppenheimer Corp., Merrill
Lynch, Pierce, Fenner & Smith Incorporated and Pacific Growth Equities, Inc.
(collectively, the "Representatives"), as representatives of the several
underwriters named therein, relating to the public offering of 7,000,000 shares
of the Registrant's common stock, par value $.01 per share (the "Common Stock"),
plus up to an additional 1,125,000 shares of Common Stock to cover over-
allotments, to be issued and sold by the Registrant (collectively, the "Company
Shares") and 500,000 shares of Common Stock to be sold by the Selling
Stockholders (the "Selling Stockholder Shares" and, together with the Company
Shares, the "Shares").

     The sale of the Shares was consummated on May 27, 1998.  The Shares were
offered and sold pursuant to a Preliminary Prospectus Supplement dated May 6,
1998 to the prospectus in the Registration Statement and a Prospectus Supplement
dated May 20, 1998 to the prospectus in the Registration Statement, each of
which was filed with the Commission pursuant to Rule 424(b) of the Act.

     The Underwriting Agreement is filed as Exhibit 1 hereto.  The opinion of
Drinker Biddle & Reath LLP, counsel to the Registrant, concerning certain legal
matters with respect to the validity of the Shares is filed as Exhibit 5 hereto.
Such opinion includes the consent of Drinker Biddle & Reath LLP to the reference
of its name in the Preliminary Prospectus Supplement and the Prospectus
Supplement.

     The Registrant is filing this Current Report on Form 8-K in order to cause
the Underwriting Agreement and the opinion and consent of Drinker Biddle & Reath
LLP to be incorporated into the Registration Statement by reference.  By filing
this Current Report on Form 8-K, however, the Registrant does not believe that
the Underwriting Agreement, the opinion and consent of Drinker Biddle & Reath
LLP or the information set forth herein represents, either individually or in
the aggregate, a "fundamental change" (as such term is used in Item
512(a)(1)(ii) of Regulation S-K) in the information set forth in the
Registration Statement.

ITEM 7.  Financial Statements and Exhibits.
         --------------------------------- 

The following exhibits are being filed with this Form 8-K:

Exhibit                  Document
- -------                  --------

1            Underwriting Agreement dated May 20, 1998 among the Registrant, the
             Selling Stockholders and the Representatives

5            Opinion of Drinker Biddle & Reath LLP

23           Consent of Drinker Biddle & Reath LLP (included in Exhibit 5)
<PAGE>
 
                                   SIGNATURES
                                   ----------



     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                            EASTERN ENVIRONMENTAL SERVICES, INC.
 


Date:  May 27, 1998                         By:/s/ Gregory M. Krzemien
                                               ---------------------------
                                               Gregory M. Krzemien,
                                               Chief Financial Officer
 
<PAGE>
 
                                 Exhibit Index
                                 -------------



Exhibit                     Document
- -------                     --------

1               Underwriting Agreement dated May 20, 1998 among the Registrant,
                the Selling Stockholders and the Representatives

5               Opinion of Drinker Biddle & Reath LLP

23              Consent of Drinker Biddle & Reath LLP (included in Exhibit 5)

<PAGE>
                                                                       Exhibit 1
 
                      EASTERN ENVIRONMENTAL SERVICES, INC.

                              7,500,000 Shares/1/
                                  Common Stock
                                ($.01 par value)

                             Underwriting Agreement


                                                              New York, New York
                                                                    May 20, 1998

Salomon Smith Barney
Smith Barney Inc.
CIBC Oppenheimer Corp.
Merrill Lynch, Pierce, Fenner & Smith
                     Incorporated
Pacific Growth Equities, Inc.
  As Representatives of the several Underwriters
c/o Smith Barney Inc.
388 Greenwich Street
New York, New York 10013


Ladies and Gentlemen:

     Eastern Environmental Services, Inc., a Delaware corporation ("EESI"),
proposes to sell to the several underwriters named in Schedule I hereto (the
"Underwriters"), for whom you (the "Representatives") are acting as
representatives, 7,000,000 shares of Common Stock, $.01 par value ("Common
Stock"), of EESI and the persons named in Schedule II hereto (the "Selling
Stockholders") propose to sell to the several Underwriters 500,000  shares of
Common Stock (said shares to be issued and sold by EESI and shares to be sold by
the Selling Stockholders being hereinafter called the "Underwritten
Securities").  EESI also proposes to grant to the Underwriters an option to
purchase up to 1,125,000 additional shares of Common Stock to cover over-
allotments (the "Option Securities"; the Option Securities, together with the
Underwritten Securities, being hereinafter called the "Securities").  To the
extent there are no additional Underwriters listed on Schedule I other than you,
the term Representatives as used herein shall 
- -------------------------------
/1/ Plus an option to purchase from EESI, up to 1,125,000 additional Securities
    to cover over-allotments.
<PAGE>
 
mean you, as Underwriters, and the terms Representatives and Underwriters shall
mean either the singular or plural as the context requires. In addition, to the
extent that there is not more than one Selling Stockholder named in Schedule II,
the term Selling Stockholder shall mean either the singular or plural. Certain
terms used herein are defined in Section 17 hereof.

     EESI and the Selling Stockholders wish to confirm as follows their
agreement with you and the other several Underwriters on whose behalf you are
acting, in connection with the several purchases of the Securities by the
Underwriters.

     1.   Representations and Warranties.  (A) EESI represents and warrants to,
          -------------------------------                                      
and agrees with, each Underwriter as set forth below in this Section 1:

          (a) EESI has filed with the Commission a registration statement on
Form S-3 (No. 333-49613) for the registration of the shares of Common Stock,
shares of preferred stock, debt securities, shares of preferred stock
represented by depositary shares and warrants  for the purchase of Common Stock,
preferred stock and debt securities under the Securities Act of 1933, as
amended, and the rules and regulations of the Commission promulgated thereunder
(the "Securities Act"), and the offering thereof from time to time in accordance
with Rule 415 of the Securities Act, and EESI has filed such amendment or
amendments thereto as may have been required prior to the execution of this
Agreement.  The registration statement (as amended, if applicable) has been
declared effective by the Commission.  The registration statement and the
prospectus (including each prospectus supplement) constituting a part thereof
provided by EESI to the Underwriters for use in connection with the offering and
sale of the Securities (including, in each case, all Incorporated Documents (as
hereinafter defined) and any information deemed to be a part thereof pursuant to
Rule 430A(b) of the Securities Act), as from time to time amended or
supplemented pursuant to the Securities Act or otherwise, are hereinafter
collectively referred to as the "Registration Statement" and the "Prospectus,"
respectively, except that if any revised prospectus shall be provided to the
Underwriters by EESI for use in connection with the offering and sale of the
Securities that differs from the prospectus on file at the Commission (whether
or not such revised prospectus is required to be filed by EESI pursuant to Rule
424(b) of the Securities Act), the term "Prospectus" shall refer to such revised
prospectus from and after the time it is first provided to the Underwriters for
such use; and except further that a prospectus supplement shall be deemed to
have supplemented a prospectus only to the extent that it relates to, and only
with respect to, the offering and sale of the Securities.  All references in
this Agreement to financial statements and schedules and other information that
are "contained," "included" or "stated" in the Registration Statement or the
Prospectus (and all other references of like import) shall be deemed to mean and
include all financial statements and schedules and other information that are or
are deemed to be incorporated by reference in the Registration Statement or the
Prospectus, as the case may be; and all references in this Agreement to
amendments or supplements to the Registration Statement or the Prospectus shall
be deemed to mean and include the filing of any document under the Securities
Exchange Act of 1934, as amended, and the rules and regulations of the
Commission promulgated thereunder (the 

                                      -2-
<PAGE>
 
"Exchange Act"), that is or is deemed to be incorporated by reference in the
Registration Statement or the Prospectus, as the case may be.

          (b) The Prospectus, as of the date it was first provided to the
Underwriters for use in connection with the offering and sale of the Securities
did not, and as of the date hereof does not, 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; provided, however, that the representations and warranties
in this section shall not apply to statements in or omissions from the
Registration Statement or the Prospectus made in reliance upon and in conformity
with information furnished to EESI in writing by or on behalf of any Underwriter
expressly for use therein.

          (c) EESI and the transactions contemplated by this Agreement meet the
requirements for using Form S-3 under the Securities Act.  The Registration
Statement, at the time the Registration Statement became effective, complied,
and as of the date hereof complies, in all material respects with the
requirements of the Securities Act.  The Registration Statement, at the time the
Registration Statement became effective, did not, and as of the date hereof does
not, contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading.

          (d) The documents incorporated or deemed to be incorporated by
reference in the Prospectus pursuant to Item 12 of Form S-3 under the Securities
Act (the "Incorporated Documents"), at the time they were filed with the
Commission (or, if any amendment with respect to any such document was filed,
when such amendment was filed), complied in all material respects with the
requirements of the Exchange Act, and any further Incorporated Documents so
filed will, when they are filed, comply with the requirements of the Exchange
Act; no such document when it was filed (or, if an amendment with respect to any
such document was filed, when such amendment was filed) contained and, when read
together with the other information in the Prospectus, at the time the
Registration Statement became effective and as of the date hereof, did not and
do not contain, an untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading; and no such further document, when it was filed, will contain an
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in the light of
the circumstances under which they were made, not misleading.

          (e) EESI has an authorized, issued and outstanding capitalization as
set forth in the Registration Statement and the Prospectus.  All of the
outstanding shares of capital stock of EESI have been duly authorized and
validly issued, fully paid and nonassessable by EESI and free of and not issued
in violation of any preemptive or similar rights; the Securities to be issued
and sold by EESI have been duly authorized and, when issued and delivered to the
Underwriters against payment therefor in accordance with the terms hereof, will
be validly issued, fully paid and nonassessable by EESI and will be free of and
will not have been issued in violation of any 

                                      -3-
<PAGE>
 
preemptive or other similar rights. Except as described in the Prospectus, (a)
there are no outstanding options, warrants or other rights calling for the
issuance of, and there are no commitments to issue any shares of, capital stock
of EESI or any security convertible into or exchangeable or exercisable for
capital stock of EESI, and (b) there is no holder of any securities of EESI or
any other person who has the right, contractual or otherwise, to cause EESI to
sell or otherwise issue to him or her, or permit him or her to underwrite the
sale of, any of the Securities. The capital stock of EESI conforms to the
description thereof in the Registration Statement and the Prospectus.

          (f) EESI is a corporation duly organized and validly existing in good
standing under the laws of the State of Delaware with full corporate power and
authority to own, lease and operate its properties and to conduct its business
as described in the Registration Statement and the Prospectus, and is duly
registered and qualified to conduct its business and is in good standing in each
jurisdiction or place where the nature of its properties or the conduct of its
business requires such registration or qualification, except where the failure
so to register or qualify does not have a material adverse effect on the
condition (financial or other), business, properties, net worth or results of
operations of EESI and its Subsidiaries (as hereinafter defined) taken as a
whole.

          (g) All of EESI's subsidiaries, other than those which are inactive,
have no business or operations of any kind, have no assets, have no value, or
nominal value, for tax and accounting purposes and would be permitted to be
omitted from any list of subsidiaries pursuant to Item 601(b)(21)(ii) of
Regulation S-K  (collectively, the "Subsidiaries"), are identified on Schedule V
and VI hereto.  Each Subsidiary is a corporation duly organized, validly
existing and in good standing in the jurisdiction of its incorporation, with
full corporate power and authority to own, lease and operate its properties and
to conduct its business as described in the Registration Statement and the
Prospectus, and is duly qualified to conduct its business and is in good
standing in each jurisdiction or place where the nature of its properties or the
conduct of its business requires such qualification, except where the failure so
to qualify would not have material adverse effect on the condition (financial or
other), business, properties, net worth or results of operations of such
Subsidiary; except as described in the Registration Statement and Prospectus,
all of the outstanding shares of capital stock of each of the Subsidiaries have
been duly authorized and validly issued, are fully paid and nonassessable, and
are owned by EESI free and clear of any lien, adverse claim, security interest,
equity, voting agreement or other encumbrance.  Other than with respect to the
Subsidiaries or as described in or contemplated by the disclosure in the
Prospectus, EESI does not have, directly or indirectly, any ownership interest
or agreement or agreement in principle to acquire any ownership interest in any
corporation, partnership, joint venture, association or other business
organization.

          (h) Each company whose stock or assets (and each operation or asset
which) is proposed to be acquired by EESI pursuant to a signed, definitive
acquisition agreement on the date hereof and is listed on Schedule IV hereto is
hereinafter referred to as a "Designated Acquiree."  Each acquisition agreement
to which EESI is a party on the date hereof relating to a 

                                      -4-
<PAGE>
 
Designated Acquiree are hereinafter collectively referred to as the "Acquisition
Agreements". The execution and delivery of, and the performance by EESI of its
obligations under, each of the Acquisition Agreements have been duly and validly
authorized by EESI and each Acquisition Agreement has been duly authorized,
executed and delivered by EESI and, to the knowledge of EESI, constitutes the
legal, valid and binding agreement of each other party thereto, enforceable
against each such party in accordance with its terms, except as the
enforceability thereof may be subject to the effect of (i) any applicable
bankruptcy, fraudulent conveyance, insolvency, reorganizations, moratorium or
other laws affecting creditors' rights generally, and (ii) general principles of
equity (regardless of whether such enforceability is considered in a proceeding
in equity of at law).

          (i) There is no legal or governmental proceeding pending, or to the
knowledge of EESI threatened, against EESI,  any of the Subsidiaries or, to the
knowledge of EESI, any of the Designated Acquirees, or to which EESI, any of the
Subsidiaries or, to the knowledge of EESI, any of the Designated Acquirees, or
to which any of their respective properties is subject that are required to be
described in the Registration Statement or the Prospectus but are not described
as required; and there is no agreement, contract, indenture, lease or other
document or instrument that is required to be described in the Registration
Statement or in any Incorporated Document or the Prospectus, or to be filed as
an exhibit to the Registration Statement or to any Incorporated Document, that
is not described or filed as required by the Securities Act or the Exchange Act.

          (j) Neither EESI nor any of the Subsidiaries is in violation of its
certificate or articles of incorporation or by-laws, or other organizational
documents, or of any statute, law, ordinance, administrative or governmental
rule or regulation applicable to EESI or any of the Subsidiaries or of any
judgment, injunction, order or decree of any court or governmental agency or
body having jurisdiction over EESI or any of the Subsidiaries, or in default in
any material respect in the performance of  any obligation, agreement or
condition contained in any bond, debenture, note or any other evidence of
indebtedness or in any material agreement, indenture, lease or other instrument
to which EESI or any of  the Subsidiaries is a party or by which any of them or
any of their respective properties may be bound.

          (k) Neither the issuance and sale of the Securities, the execution,
delivery or performance of this Agreement by EESI nor the consummation by EESI
of the transactions contemplated hereby (A) requires any consent, approval,
authorization or other order of or registration or filing with, any court,
regulatory body, administrative agency or other governmental body, agency or
official (except such as may be required for the registration of the Securities
under the Securities Act and the Exchange Act and compliance with the securities
or Blue Sky laws of various jurisdictions, all of which have been or will be
effected in accordance with this Agreement) or conflicts or will conflict with
or constitutes or will constitute as of the date hereof and on each Closing Date
(as defined in Section 3) a breach of, or a default under, the certificate or
articles of incorporation or by-laws, or other organizational documents, of EESI
or any of the Subsidiaries or (B) conflicts or will conflict with or constitutes
or will constitute as of 

                                      -5-
<PAGE>
 
the date hereof and on each Closing Date a breach of, or a default under, any
agreement, indenture, lease or other instrument to which EESI or any of the
Subsidiaries is a party or by which any of them or any of their respective
properties may be bound, or violates or will violate as of the date hereof and
on each Closing Date any statute, law, regulation or filing or judgment,
injunction, order or decree applicable to EESI or any of the Subsidiaries or any
of their respective properties, or as of the date hereof and on each Closing
Date will result in the creation or imposition of any lien, charge or
encumbrance upon any property or assets of EESI or any of the Subsidiaries
pursuant to the terms of any agreement or instrument to which any of them is a
party or by which any of them may be bound or to which any of the property or
assets of any of them is subject.

          (l) Each of the accounting firms which have certified or will certify
any of the financial statements included or incorporated by reference in the
Registration Statement and the Prospectus are independent public accountants as
required by the Securities Act.

          (m) The historical consolidated financial statements, together with
the related schedules and notes, included or incorporated by reference in the
Registration Statement and the Prospectus and the supplemental consolidated
financial statements, together with the related schedules and notes, included or
incorporated by reference in the Registration Statement and the Prospectus,
present fairly in all material respects the consolidated financial position,
results of operations, stockholders' equity (and deficit) and cash flows of EESI
and its consolidated Subsidiaries or of one or more businesses acquired or to be
acquired by EESI, as the case may be, on the basis stated in the Registration
Statement and in such Incorporated Document at the respective dates or for the
respective periods to which they apply.  All such financial statements and
related schedules and notes have been prepared in accordance with generally
accepted accounting principles in the United States consistently applied
throughout the periods involved, except as disclosed therein; and the summary
and selected (historical and supplemental) consolidated financial and
statistical information and data included in the Registration Statement and the
Prospectus present fairly the information shown therein and such data have been
compiled on a basis consistent with the financial statements presented therein
and the books and records of EESI and its Subsidiaries.  The pro forma
consolidated financial statements of EESI and its consolidated Subsidiaries,
together with the related schedules and notes, as set forth in and incorporated
in the Registration Statement and the Prospectus, present fairly the information
shown therein, have been prepared in accordance with the applicable provisions
of Article 11 of Regulation S-X promulgated by the Commission with respect to
pro forma financial statements and have been properly compiled on the pro forma
bases described therein and, in the opinion of EESI, the assumptions used in the
preparation thereof are reasonable and the adjustments used therein are
appropriate to give effect to the transactions or circumstances referred to
therein, and the other financial and statistical information and data included
in the Registration Statement and the Prospectus are accurately presented and
prepared on a basis consistent with such financial statements and the books and
records of EESI and the Subsidiaries.  As stated in the Prospectus, EESI has
agreed to change its fiscal year end from June 30 to December 31.

                                      -6-
<PAGE>
 
          (n) The execution and delivery of, and the performance by EESI of its
obligations under, this Agreement have been duly and validly authorized by EESI,
and this Agreement has been duly executed and delivered by EESI and constitutes
the valid and legally binding agreement of EESI, enforceable against EESI in
accordance with its terms, except that (i) such enforceability may be subject to
the effect of any applicable bankruptcy, fraudulent conveyance, insolvency,
reorganization, moratorium or other laws affecting the creditors' rights
generally and general principles of equity (regardless of whether such
enforceability is considered in a proceeding in equity or at law), and (ii)
rights to indemnity and contribution hereunder may be limited by federal or
state securities laws and principles of public policy.

          (o) Except as disclosed in the Registration Statement and the
Prospectus, subsequent to the respective dates as of which such information is
given in the Registration Statement and the Prospectus, neither EESI nor any of
the Subsidiaries has incurred any liability or obligation, direct or contingent,
or entered into any transaction, not in the ordinary course of business, that is
material to EESI and the Subsidiaries taken as a whole, and there has not been
any change in the capital stock, or material increase in the short-term debt or
long-term debt, of EESI or any of the Subsidiaries or any material adverse
change, or any development involving or which may reasonably be expected to
involve, a prospective material adverse effect on the condition (financial or
other), business, properties, net worth or results of operations of EESI and the
Subsidiaries taken as a whole.

          (p) Each of EESI and the Subsidiaries has good and marketable title to
all property (real and personal) described in the Registration Statement and the
Prospectus or in a document filed as an exhibit to the Registration Statement as
being owned by it, free and clear of all liens, claims, security interests or
other encumbrances, except such as are described in the Registration Statement
and the Prospectus or in a document filed as an exhibit to the Registration
Statement or which are not material to EESI and/or the applicable Subsidiary,
and all the property described in the Prospectus as being held under lease by
EESI or any Subsidiary is held by EESI or such Subsidiary under valid,
subsisting and enforceable leases.

          (q) EESI has not distributed and, prior to the later to occur of (i)
the Closing Date and (ii) the completion of the distribution of the Securities,
will not distribute any offering material in connection with the offering and
sale of the Securities other than the Registration Statement, the Prospectus or
other materials, if any, permitted by the Securities Act.

          (r) EESI and each of the Subsidiaries has all such permits, licenses,
franchises and authorizations of governmental or regulatory authorities
("permits") as are necessary to own its respective properties and to conduct its
business in the manner described in the Prospectus, subject to such
qualifications as may be set forth in the Prospectus and except where the
failure to have such permits would not have a material adverse effect on the
condition (financial or other), business, properties, net worth or results of
operations of EESI and the Subsidiaries taken as a whole; EESI and each of the
Subsidiaries has fulfilled and performed all its material obligations with
respect to such permits and no event has occurred which allows, or after notice

                                      -7-
<PAGE>
 
or lapse of time would allow, revocation or termination thereof or results, or
after notice or lapse of time would result,  in any other material impairment of
the rights of the holder of any such permit, subject in each case to such
qualification as may be set forth in the Prospectus; and, except as described in
the Prospectus, none of such permits contains any restriction that is materially
burdensome to EESI or any of the Subsidiaries.

          (s) EESI maintains a system of internal accounting controls sufficient
to provide reasonable assurances that (i) transactions are executed in
accordance with management's general or specific authorization, (ii)
transactions are recorded as necessary to permit preparation of financial
statements in conformity with generally accepted accounting principles and to
maintain accountability for assets, (iii) access to assets is permitted only in
accordance with management's general or specific authorization, and (iv) the
recorded accountability for assets is compared with existing assets at
reasonable intervals and appropriate action is taken with respect to any
differences.

          (t) Neither EESI nor any of its Subsidiaries  nor any employee or
agent of EESI or any of its Subsidiaries has made any payment of funds of EESI
or of any of the Subsidiaries or received or retained any funds in violation of
any statute, law, rule or regulation, which payment, receipt or retention of
funds is of a character required to be disclosed in the Prospectus.

          (u) EESI and each of the Subsidiaries have filed in a timely manner
all tax returns required to be filed with any taxing authority, which returns
are complete and correct and, to the best knowledge of EESI, are not the subject
of any audit proceedings, and neither EESI nor any of the Subsidiaries is in
default in the payment of any taxes which were payable pursuant to said returns
or any assessments with respect thereto, except for such taxes as are being
contested in good faith and as to which adequate reserves have been provided.

          (v) EESI and each of the Subsidiaries, and (to the knowledge of EESI)
each of the Designated Acquirees, has conducted their respective businesses in
compliance with all applicable federal, state, provincial, foreign  and local
laws, regulations, orders, codes and common law including, without limitation,
those promulgated under the Resource Conservation and Recovery Act of 1976
("RCRA"), including the Subtitle D Regulations, the Federal Water Pollution
Control Act of 1972 (the "Clean Water Act"), the Comprehensive Environmental
Response, Compensation and Liability Act of 1980 ("CERCLA"), the Clean Air Act,
and the Occupational Safety and Health Act ("OSHA") and those laws, regulations,
orders, codes and common law applicable to protection of the environment, waste
management and waste disposal, health and safety (collectively, "Environmental
Laws") and, to the knowledge of EESI, under current law there are no existing
circumstances that would prevent, interfere with, or materially increase the
cost of EESI's or of any of the Subsidiaries' compliance with RCRA, the Subtitle
D Regulations, the Clean Water Act, CERCLA, OSHA or any other Environmental Laws
in the future, except for any lack of compliance or the existence of any such
circumstance as would not have, individually or in the aggregate, a material
adverse effect on the condition (financial or

                                      -8-
<PAGE>
 
other), business, properties, net worth or results of operations of EESI and the
Subsidiaries taken as a whole.

          (w) Except as set forth in the Registration Statement and the
Prospectus, there is no claim under any of Environmental Law, including common
law (an "Environmental Claim"), pending or, to the knowledge of EESI, threatened
against EESI or any of the Subsidiaries, and, to the knowledge of EESI, no
Environmental Claim is pending or threatened against any of the Designated
Acquirees that could have a material adverse effect on the condition (financial
or other), business, properties, net worth or results of operations of EESI and
the Subsidiaries, taken as a whole and, to the knowledge of EESI, there are no
past or present actions, activities, circumstances, events or incidents,
including, without limitation, releases of any material into the environment,
that could reasonably be expected to form the basis of any such claim against
EESI, any of the Subsidiaries or any of the Designated Acquirees.

          (x) (i) EESI and each of the Subsidiaries are insured by insurers of
recognized financial responsibility against such losses and risks and in such
amounts as are customary in the businesses in which they are engaged; (ii) all
policies of insurance and fidelity or surety bonds insuring EESI or any of its
Subsidiaries or their respective businesses, assets, employees, officers and
directors are in full force and effect; (iii) EESI and each of the Subsidiaries
are in compliance with the terms of such policies and instruments in all
material respects; and (iv) there are no claims by EESI or any of the
Subsidiaries under any such policy or instrument as to which any insurance
company is denying liability or defending under a reservation of rights clause.

          (y) Each holder of a security of EESI that has any right to require
registration of shares of Common Stock or any other security of EESI because of
the filing of the Registration Statement or consummation of the transactions
contemplated by this Agreement has been notified of EESI's intent to file the
Registration Statement with the Commission and has agreed in writing to waive
such holder's registration rights with respect to the public offering
contemplated hereby.

          (z) EESI and the Subsidiaries  own or possess valid and enforceable
rights to use all patents, trademarks, trademark registrations, service marks,
service mark registrations, trade names, copyrights, licenses, inventions, trade
secrets and rights described in the Prospectus as being owned by them or any of
them or material to the conduct of their respective businesses, and EESI is not
aware of any claim to the contrary or any challenge by any other person or
entity to the rights of EESI and the Subsidiaries with respect to the foregoing
or of any infringement by any other person or entity with respect to the
foregoing.

          (aa)  EESI is not now, and after sale of the Securities to be sold by
it hereunder and application of the net proceeds from such sale as described in
the Prospectus under the caption "Use of Proceeds" will not be, an "investment
company" within the meaning of the Investment Company Act of 1940, as amended.

                                      -9-
<PAGE>
 
          (bb)  The Securities have been approved for quotation, upon notice of
issuance, on the Nasdaq National Market.

          (cc)  EESI is in compliance with the Commission's Staff Legal Bulletin
No. 5 dated January 12, 1998  related to Year 2000 compliance.

          Any certificate signed by an officer of EESI and delivered to the
Representatives or counsel for the Underwriters in connection with the offering
of the Securities shall be deemed a representation and warranty by EESI, as to
matters covered thereby, to each Underwriter.

     (B) Each Selling Stockholder severally represents and warrants to, and
agrees with, each Underwriter as set forth below in this Section 1(B):

          (a) Such Selling Stockholder is the lawful owner of the Securities to
be sold by such Selling Stockholder hereunder and upon sale and delivery of, and
payment for, such Securities, as provided herein, such Selling Stockholder will
convey to the Underwriters good and marketable title to such Securities, free
and clear of all liens, encumbrances, equities and claims whatsoever.

          (b) Such Selling Stockholder is a limited partnership duly formed and
validly existing under the laws of the respective jurisdictions of their
formation; such Selling Stockholder has the full power and authority to execute,
deliver and perform its obligations under this Agreement; and the execution and
delivery of, and the performance by such Selling Stockholder of its obligations
under this Agreement has been duly and validly authorized by such Selling
Stockholder, and this Agreement has been duly executed and delivered by such
Selling Stockholder.

          (c) Such Selling Stockholder has not taken, directly or indirectly,
any action designed to or which has constituted or which might reasonably be
expected to cause or result, under the Exchange Act or otherwise, in
stabilization or manipulation of the price of any security of EESI to facilitate
the sale or resale of the Securities.
 
          (d) No consent, approval, authorization or order of any court or
governmental agency or body is required for the consummation by such Selling
Stockholder of the transactions contemplated herein, except such as may have
been obtained under the Securities Act and such as may be required under the
blue sky laws of any jurisdiction in connection with the purchase and
distribution of the Securities by the Underwriters and such other approvals as
have been obtained.

          (e) Neither the sale of the Securities being sold by such Selling
Stockholder nor the consummation of any other of the transactions herein
contemplated by such Selling Stockholder or the fulfillment of the terms hereof
by such Selling Stockholder will conflict with, result in a breach or violation
of, or constitute a default under any law or the charter or by-laws 

                                      -10-
<PAGE>
 
(or similar organizational documents) of such Selling Stockholder or the terms
of any indenture or other agreement or instrument to which such Selling
Stockholder is a party or bound, or any judgment, order or decree applicable to
such Selling Stockholder of any court, regulatory body, administrative agency,
governmental body or arbitrator having jurisdiction over such Selling
Stockholder.

          (f) Such Selling Stockholder has no reason to believe that the
representations and warranties of EESI contained in Section 1 are not true and
correct in any material respect, is familiar with the Registration Statement and
has no knowledge of any material fact, condition or information not disclosed in
the Prospectus which has adversely affected or may adversely affect the business
of EESI or any of its subsidiaries; and the sale of Securities by such Selling
Stockholder pursuant hereto is not prompted by any information concerning EESI
or any of its subsidiaries which is not set forth in the Prospectus.

          (g) In respect of any statements in or omissions from the Registration
Statement or the Prospectus made in reliance upon and in conformity with
information furnished in writing to EESI by the Selling Stockholder specifically
for use in connection with the preparation thereof, such Selling Stockholder
hereby makes the same representations and warranties to each Underwriter as EESI
makes to such Underwriter under paragraphs (b) and (c) of Section 1(A) of this
Agreement.

          Any certificate signed by any officer of any Selling Stockholder and
delivered to the Representatives or counsel for the Underwriters in connection
with the offering of the Securities shall be deemed a representation and
warranty by such Selling Stockholder, as to matters covered thereby, to each
Underwriter.

     2.   Purchase and Sale.    (a)  Subject to the terms and conditions and in
          ------------------                                                   
reliance upon the representations and warranties herein set forth, each of EESI
and each of the Selling Stockholders agrees, severally and not jointly, to sell
to each Underwriter, and each Underwriter agrees, severally and not jointly, to
purchase from EESI and each of the Selling Stockholders, at a purchase price of
$25.115 per share, the amount of the Underwritten Securities set forth opposite
such Underwriter's name in Schedule I hereto.

          (b)  Subject to the terms and conditions and in reliance upon the
representations and warranties herein set forth, EESI hereby grants an option to
the several Underwriters to purchase, severally and not jointly, up to 1,125,000
Option Securities at the same purchase price per share as the Underwriters shall
pay for the Underwritten Securities.  Said option may be exercised only to cover
over-allotments in the sale of the Underwritten Securities by the Underwriters.
Said option may be exercised in whole or in part at any time on or before the
30th day after the date hereof upon written or telegraphic notice by the
Representatives to EESI setting forth the number of shares of the Option
Securities as to which the several Underwriters are exercising the option and
the settlement date.  Delivery of certificates for the shares of Option
Securities by EESI, and payment therefor to EESI, shall be made as provided in
Section 3 hereof. 

                                      -11-
<PAGE>
 
The number of Option Securities to be purchased by each Underwriter shall be the
same percentage of the total number of shares of the Option Securities to be
purchased by the several Underwriters as such Underwriter is purchasing of the
Underwritten Securities, subject to such adjustments as you in your absolute
discretion shall make to eliminate any fractional shares.

     3.   Delivery and Payment.  Delivery of and payment for the Underwritten
          ---------------------                                              
Securities and the Option Securities (if the option provided for in Section 2(b)
hereof shall have been exercised on or before the third Business Day prior to
the Closing Date) shall be made at 10:00 AM, New York City time, on May 27,
1998, or at such time on such later date not more than three Business Days after
the foregoing date as the Representatives shall designate, which date and time
may be postponed by agreement between the Representatives, EESI and the Selling
Stockholders or as provided in Section 9 hereof (such date and time of delivery
and payment for the Securities being herein called the "Closing Date").
Delivery of the Securities shall be made to the Representatives for the
respective accounts of the several Underwriters against payment by the several
Underwriters through the Representatives of the respective aggregate purchase
prices of the Securities being sold by EESI and each of the Selling Stockholders
to or upon the order of EESI and the Selling Stockholders by wire transfer
payable in same-day funds to the accounts specified by EESI and the Selling
Stockholders.  Delivery of the Underwritten Securities and the Option Securities
shall be made through the facilities of The Depository Trust Company unless the
Representatives shall otherwise instruct.

     Each Selling Stockholder will pay all applicable state transfer taxes, if
any, involved in the transfer to the several Underwriters of the Securities to
be purchased by them from such Selling Stockholder and the respective
Underwriters will pay any additional stock transfer taxes involved in further
transfers.

     If the option provided for in Section 2(b) hereof is exercised after the
third Business Day prior to the Closing Date, EESI will deliver the Option
Securities (at the expense of EESI) to the Representatives on the date specified
by the Representatives (which shall be within three Business Days after exercise
of said option) for the respective accounts of the several Underwriters, against
payment by the several Underwriters through the Representatives of the purchase
price thereof to or upon the order of EESI by wire transfer payable in same-day
funds to an account specified by EESI.  If settlement for the Option Securities
occurs after the Closing Date, EESI will deliver to the Representatives on the
settlement date for the Option Securities, and the obligation of the
Underwriters to purchase the Option Securities shall be conditioned upon receipt
of, supplemental opinions, certificates and letters confirming as of such date
the opinions, certificates and letters delivered on the Closing Date pursuant to
Section 6 hereof.

     4.   Offering by Underwriters.  It is understood that the several
          -------------------------                                   
Underwriters propose to offer the Securities for sale to the public as set forth
in the Prospectus.

     5.   Agreements.  (A) EESI agrees with the several Underwriters that:
          -----------                                                     

                                      -12-
<PAGE>
 
          (a) EESI has prepared a prospectus supplement setting forth the number
of Securities covered thereby and their terms not otherwise specified in the
Prospectus included in the Registration Statement, the names of the Underwriters
and the number of Securities which each severally has agreed to purchase, the
names of the Underwriters acting as co-managers in connection with the offering,
the price at which the Securities are to be purchased by the Underwriters from
EESI, the initial public offering price, if any, the selling concession and
reallowance, if any, and such other information as the Representatives and EESI
deem appropriate; and EESI will promptly transmit copies of the Prospectus and
the prospectus supplement to the Commission for filing pursuant to Rule 424(b)
of the Securities Act and will furnish to the Underwriters named therein as many
copies of the Prospectus (including each prospectus supplement) as the
Representatives shall reasonably request.

          (b) If, at the time the Prospectus  was filed with the Commission
pursuant to Rule 424(b) of the Securities Act, any information shall have been
omitted therefrom in reliance upon Rule 430A of the Securities Act, then
immediately following the execution of this Agreement, EESI will prepare, and
file or transmit for filing with the Commission in accordance with such Rule
430A and Rule 424(b) of the Securities Act, a copy of an amended Prospectus, or,
if required by such Rule 430A, a post-effective amendment to the Registration
Statement (including amended Prospectuses), containing all information so
omitted.  If required, EESI will prepare and file or transmit for filing a Rule
462(b) Registration Statement not later than the date of execution of this
Agreement.  If a Rule 462(b) Registration Statement is filed, EESI shall make
payment of, or arrange for payment of, the additional registration fee owing to
the Commission required by Rule 111 of the Securities Act.

          (c) Prior to the termination of the offering of the Securities, EESI
will not file any amendment of the Registration Statement or supplement to the
Prospectus  or any Rule 462(b) Registration Statement, or file any document
which, upon filing, becomes an Incorporated Document, unless EESI has furnished
you a copy for your review prior to filing and will not file any such proposed
amendment, supplement or document to which you reasonably object.  Subject to
the foregoing sentence, if the Registration Statement has become or becomes
effective pursuant to Rule 430A, or filing of the Prospectus is otherwise
required under Rule 424(b), EESI will cause the Prospectus, properly completed,
and any supplement thereto to be filed with the Commission pursuant to the
applicable paragraph of Rule 424(b) within the time period prescribed and will
provide evidence satisfactory to the Representatives of such timely filing.
EESI will promptly advise the Representatives (1) of the effectiveness of any
amendment to the Registration Statement, (2) when the Prospectus, and any
supplement thereto, shall have been filed (if required) with the Commission
pursuant to Rule 424(b) or when any Rule 462(b) Registration Statement shall
have been filed with the Commission, (3) when, prior to termination of the
offering of the Securities, any amendment to the Registration Statement shall
have been filed or become effective, (4) of any request by the Commission or its
staff for any amendment of the Registration Statement, or any Rule 462(b)
Registration Statement, or for any prospectus supplement or for any additional
information, (5) of the issuance by the Commission of any stop order suspending
the effectiveness of the Registration Statement or the 

                                      -13-
<PAGE>
 
institution or threatening of any proceeding for that purpose, and (6) of the
receipt by EESI of any notification with respect to the suspension of the
qualification of the Securities for sale in any jurisdiction or the institution
or threatening of any proceeding for such purpose. EESI will use its best
efforts to prevent the issuance of any such stop order or the suspension of any
such qualification and, if issued, to obtain as soon as possible the withdrawal
thereof.

          (d) If, at any time when a prospectus relating to the Securities is
required to be delivered under the Securities Act, any event occurs as a result
of which the Prospectus as then supplemented would include any untrue statement
of a material fact or omit to state any material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading, or if it shall be necessary to amend the Registration
Statement or supplement the Prospectus (or to file under the Exchange Act any
document which, upon filing, becomes an Incorporated Document) to comply with
the Securities Act or the rules thereunder, EESI promptly will (1) notify the
Representatives of any such event; (2) prepare and file with the Commission,
subject to paragraph (c) of this Section 5, an amendment, supplement or
Incorporated Document which will correct such statement or omission or effect
such compliance; and (3) supply any such documents to you in such quantities as
you may reasonably request.

          (e) As soon as practicable, EESI will make generally available to its
security holders and to each Representative an earnings statement or statements
of EESI and its Subsidiaries which will satisfy the provisions of Section 11(a)
of the Securities Act and Rule 158 under the Securities Act.

          (f) EESI will furnish to each Representative and counsel for the
Underwriters one signed copy of the Registration Statement (including exhibits
thereto) and to each other Underwriter a copy of the Registration Statement
(without exhibits thereto), such number of copies of the Incorporated Documents
(without exhibits thereto) as the Representatives may reasonably request,  and,
so long as delivery of a prospectus by an Underwriter or dealer may be required
by the Securities Act, as many copies of the Prospectus and any supplement
thereto as the Representatives may reasonably request.

          (g) EESI will arrange, if necessary, for the qualification of the
Securities for sale under the laws of such jurisdictions as the Representatives
may designate and will maintain such qualifications in effect so long as
required for the distribution of the Securities; provided that in no event shall
                                                 --------                       
EESI be obligated to qualify to do business in any jurisdiction where it is not
now so qualified or to take any action that would subject it to service of
process in suits, other than those arising out of the offering or sale of the
Securities, in any jurisdiction where it is not now so subject.

          (h) Except as provided in this Agreement, EESI will not sell, offer to
sell, solicit an offer to buy, contract to sell, grant any option to purchase,
or otherwise transfer or dispose of any Common Stock or any securities
convertible into or exercisable or exchangeable for Common Stock, or any
securities convertible into or exercisable or exchangeable for 

                                      -14-
<PAGE>
 
Common Stock, for a period of 120 days after the date hereof (the "120-Day Lock-
Up Period"), without the prior written consent of Smith Barney Inc., except that
EESI may (i) issue shares of Common Stock ("Acquisition Shares") in connection
with additional acquisitions by EESI, other than shares of Common Stock issued
pursuant to EESI's Acquisition Shelf (as defined in the Prospectus) unless the
purchaser of such Acquisition Shares under the Acquisition Shelf agrees to be
bound by a lock-up letter in the same form as those being delivered to you
pursuant to paragraph (i) below pursuant to which such purchaser agrees with
EESI not to sell, offer to sell, solicit an offer to buy, contract to sell,
grant any option to purchase, or otherwise transfer or dispose of, any such
shares at any time before the expiration of such 120-day period and that the
certificates evidencing such shares shall bear a legend to such effect, (ii)
grant options and/or warrants to purchase shares of Common Stock in connection
with additional acquisitions that are exercisable no earlier than the expiration
of the 120-Day Lock-up Period and (iii) issue shares of Common Stock pursuant to
the exercise of options outstanding on the date hereof under EESI's 1987 Stock
Option Plan, 1991 Stock Option Plan, 1996 Stock Option Plan and 1997 Stock
Option Plan and warrants outstanding on the date hereof. EESI further agrees for
the express benefit of the Underwriters that, during the 120-Day Lock-Up Period,
it will not, without the prior written consent of Smith Barney Inc., waive any
provision of any acquisition or related agreement imposing restrictions on the
transfer or other disposition of shares of Common Stock or securities
convertible into or exercisable or exchangeable for Common Stock and will take
reasonable steps to cause its transfer agent to enforce any such provision so as
to limit the transfer or other disposition of shares of Common Stock or
securities convertible into or exercisable or exchangeable for Common Stock
during the 120-Day Lock-Up Period.

          (i) EESI has furnished or will furnish to you "lock-up" letters of
each of its executive officers (except for Ronald Pirollo) and directors and
certain stockholders identified by you in the respective forms heretofore
delivered to you and approved by you for the lock-up periods set forth in the
letter from Smith Barney Inc. to EESI dated May 20, 1998.

          (j) EESI will not take, directly or indirectly, any action designed to
or which has constituted or which might reasonably be expected to cause or
result, under the Exchange Act or otherwise, in stabilization or manipulation of
the price of any security of EESI to facilitate the sale or resale of the
Securities.

          (k) EESI and the Selling Stockholders (in proportion to the number of
Securities being offered by each of them) agree to pay the costs and expenses
relating to the following matters:  (i) the preparation, printing or
reproduction and filing with the Commission of the Registration Statement
(including financial statements and exhibits thereto), the Prospectus, and each
amendment or supplement to any of them; (ii) the printing (or reproduction) and
delivery (including postage, air freight charges and charges for counting and
packaging) of such copies of the Registration Statement, the Prospectus, and all
amendments or supplements to any of them, as may, in each case, be reasonably
requested for use in connection with the offering and sale of the Securities;
(iii) the preparation, printing, authentication, issuance and delivery of
certificates for the Securities, including any stamp or transfer taxes in
connection 

                                      -15-
<PAGE>
 
with the original issuance and sale of the Securities; (iv) the printing (or
reproduction) and delivery of this Agreement, any blue sky memorandum and all
other agreements or documents printed (or reproduced) and delivered in
connection with the offering of the Securities; (v) the registration of the
Securities under the Exchange Act and the listing of the Securities on the
Nasdaq National Market; (vi) any registration or qualification of the Securities
for offer and sale under the securities or blue sky laws of the several states
(including filing fees and the reasonable fees and expenses of counsel for the
Underwriters relating to such registration and qualification); (vii) any filings
required to be made with the National Association of Securities Dealers, Inc.
(including filing fees and the reasonable fees and expenses of counsel for the
Underwriters relating to such filings); (viii) the transportation and other
expenses incurred by or on behalf of EESI representatives in connection with
presentations to prospective purchasers of the Securities; (ix) the fees and
expenses of EESI's accountants and the fees and expenses of its counsel
(including local and special counsel for EESI and the Selling Stockholders); and
(x) all other costs and expenses incident to the performance by EESI and the
Selling Stockholders of their respective obligations hereunder.

     (B) Each Selling Stockholder agrees with the several Underwriters that:

     (a) Such Selling Stockholder will not sell, offer to sell, solicit an offer
to buy, contract to sell, grant any option to purchase, or otherwise transfer or
dispose of, any shares of Common Stock (except for the Securities to be sold by
such Selling Stockholder pursuant to this Agreement), or any securities
convertible into or exercisable or exchangeable for Common Stock, for a period
of 120 days after the date of this Agreement without prior written consent of
Smith Barney Inc., except that such Selling Stockholder may make gifts of such
securities to members of such Selling Stockholder's "immediate family" (as such
term is defined under Item 404 of Regulation S-K under the Securities Act) or
transfer such securities to one or more trusts established for the benefit of
members of such Selling Stockholder's immediately family; provided, that any
                                                          --------          
such transferee agrees in writing to be bound by the terms hereof.

     (b) Such Selling Stockholder will not take any action designed to or which
has constituted or which might reasonably be expected to cause or result, under
the Exchange Act or otherwise, in stabilization or manipulation of the price of
any security of EESI to facilitate the sale or resale of the Securities.

     (c) Such Selling Stockholder will advise you promptly, and if requested by
you, will confirm such advice in writing, so long as delivery of a prospectus
relating to the Securities by an underwriter or dealer may be required under the
Act, of (i) any material change in EESI's condition (financial or otherwise),
prospects, earnings, business or properties, which comes to the attention of
such Selling Stockholder, (ii) any change in information in the Registration
Statement or the Prospectus relating to such Selling Stockholder or (iii) any
new material information relating to EESI or relating to any matter stated in
the Prospectus which comes to the attention of such Selling Stockholder.

                                      -16-
<PAGE>
 
     (d) Such Selling Stockholder will comply with the agreement contained in
Section 5(A)(k).

     6.   Conditions to the Obligations of the Underwriters.  The obligations of
          --------------------------------------------------                    
the Underwriters to purchase the Underwritten Securities and the Option
Securities, as the case may be, shall be subject to the accuracy of the
representations and warranties on the part of EESI and the Selling Stockholders
contained herein as of the Execution Time, the Closing Date and any settlement
date pursuant to Section 3 hereof, to the accuracy of the statements of EESI and
the Selling Stockholders made in any certificates pursuant to the provisions
hereof, to the performance by EESI and the Selling Stockholders of their
obligations hereunder and to the following additional conditions:

          (a) The Registration Statement and any amendment to the Registration
Statement shall have become effective; if filing of the Prospectus, or any
supplement thereto, is required pursuant to Rule 424(b), the Prospectus, and any
such supplement, will be filed in the manner and within the time period required
by Rule 424(b); and no stop order suspending the effectiveness of the
Registration Statement shall have been issued and no proceedings for that
purpose shall have been instituted or threatened.

          (b) EESI shall have furnished to the Representatives an opinion of
Drinker Biddle & Reath LLP, counsel for EESI, dated the Closing Date and
addressed to the Representatives, to the effect that:

          (i) EESI is validly existing as a corporation in good standing under
          the laws of the State of Delaware, with full corporate power to own,
          lease and operate its properties and to conduct its business as
          described in the Registration Statement and the Prospectus, and EESI
          is duly qualified to conduct its business and is in good standing in
          each jurisdiction or place where the nature of its properties or the
          conduct of its business requires such registration or qualification,
          except where the failure so to register or qualify does not have a
          material adverse effect on the condition (financial or other),
          business, properties, net worth or results of operations of EESI and
          the Subsidiaries taken as a whole;

          (ii)  Each of the Delaware, New Jersey and Pennsylvania Subsidiaries
          identified in Schedule V hereto (collectively, the "Schedule V
          Subsidiaries") is validly existing as a corporation in good standing
          under the laws of the jurisdiction of its organization, with full
          corporate power to own, lease, and operate its properties and to
          conduct its business as described in the Registration Statement and
          the Prospectus and is duly qualified to conduct its business and is in
          good standing in each jurisdiction or place where the nature of its
          properties or the conduct of its business requires such registration
          or qualification, except where the failure so to register or qualify
          does not have a material adverse effect on the condition (financial or
          other), business, properties, net worth or results of 

                                      -17-
<PAGE>
 
          operations of EESI and the Subsidiaries taken as a whole; and all the
          outstanding shares of capital stock of each of the Schedule V
          Subsidiaries have been duly authorized and validly issued, are fully
          paid and nonassessable, and, except as otherwise set forth in the
          Prospectus, all of the outstanding shares of capital stock of each of
          the subsidiaries are owned of record by EESI, free and clear of any
          perfected security interest, lien, adverse claim, equity or other
          encumbrance;

          (iii)  The authorized and actual outstanding capital stock of EESI at
          March 31, 1998 is as set forth under the caption "Capitalization" in
          the prospectus supplement (dated May 20, 1998); and the authorized
          capital stock of EESI conforms in all material respects as to legal
          matters to the description thereof contained in the Prospectus under
          the caption "Description of Capital Stock";

          (iv)  All the shares of capital stock of EESI outstanding (including
          the Securities being sold hereunder by the Selling Stockholders) prior
          to the issuance of the Securities to be issued and sold by EESI
          hereunder have been duly authorized and validly issued by EESI, and
          are fully paid and nonassessable by EESI and were not issued in
          violation of any statutory preemptive or, to such counsel's knowledge,
          other similar rights of any holder of EESI's capital stock;

          (v) The Securities to be issued and sold to the Underwriters by EESI
          hereunder have been duly authorized and, when issued and delivered to
          the Underwriters against payment therefor in accordance with the terms
          hereof, will be validly issued, fully paid and nonassessable by EESI
          and will not have been issued in violation of any statutory preemptive
          or, to the knowledge of such counsel, other similar rights that
          entitle or will entitle any person to acquire any shares upon the
          issuance thereof by EESI.  To the knowledge of such counsel, no
          holders of capital stock of EESI are entitled to have such securities
          registered under the Registration Statement which rights have not been
          waived;

          (vi)    The form of certificates for the Securities conforms to the
          requirements of the Delaware General Corporation Law;

          (vii)   Any required filing of the Prospectus pursuant to Rule 424(b)
          has been made in accordance with Rule 424(b);

          (viii)  EESI has the corporate power and authority to enter into this
          Agreement and to issue, sell and deliver the Securities to be sold by
          it to the Underwriters as provided herein.  This Agreement has been
          duly authorized, executed and delivered by EESI and is a valid, legal
          and binding agreement of EESI, enforceable against EESI in accordance
          with its terms, except as enforcement of rights to indemnity and
          contribution hereunder may be limited by federal or state securities
          laws or principles of public policy and subject to the qualification
          that 
          

                                      -18-
<PAGE>
 
          enforceability of EESI's obligations hereunder may be limited by
          any applicable bankruptcy, fraudulent conveyance, insolvency,
          reorganization, moratorium or other laws affecting the creditors'
          rights generally and by general principles of equity (for purposes of
          the opinion set forth in this paragraph (viii) only, such counsel may
          assume that the provisions of Pennsylvania law are the same as those
          of New York law);

          (ix)  Neither the issuance, offer, sale or delivery of the Securities
          by EESI, the execution, delivery or performance of this Agreement by
          EESI, compliance by EESI with the provisions hereof, nor consummation
          by EESI of the transactions contemplated hereby conflicts with or
          constitutes a breach of, or a default under, the certificate or
          articles of incorporation or by-laws, or other organizational
          documents, of EESI or of any of the Schedule V Subsidiaries, nor
          (assuming compliance with all applicable state or foreign securities
          and Blue Sky laws) will any such action result in any violation of any
          existing federal, New Jersey or Pennsylvania statute, law, rule,
          regulation, ruling, judgment, injunction, order or decree applicable
          to EESI or to the Subsidiaries, or to any of their respective
          properties, or in any violation of any provision of the Delaware
          General Corporation Law;

          (x)   No consent, approval, authorization or other order of, or
          registration or filing with, any court, regulatory body,
          administrative agency or other governmental body, agency, or official
          is required on the part of EESI (except as have been obtained under
          the Securities Act and the Exchange Act or such as may be required
          under state or foreign securities or Blue Sky laws governing the
          purchase and distribution of the Securities) for the valid issuance
          and sale of the Securities to the Underwriters as contemplated by this
          Agreement;

          (xi)  The Registration Statement, at the time it became effective, as
          of the date hereof and as of the Closing Date, and the Prospectus
          (except for the financial statements and the notes thereto and the
          schedules and other financial and statistical data included therein,
          as to which such counsel need not express any opinion) comply as to
          form in all material respects with the requirements of the Securities
          Act; and each of the Incorporated Documents, as amended (except for
          the financial statements and the notes thereto and the schedules and
          other financial and statistical data included therein, as to which
          counsel need not express any opinion) complies as to form in all
          material respects with the Exchange Act;

          (xii)  (A)  To the knowledge of such counsel, other than as described
          in the Prospectus, there are no legal or governmental proceedings
          pending or threatened against EESI or any of the Subsidiaries, or to
          which EESI or any of the Subsidiaries, or any of their property, is
          subject which are required to be described in the Registration
          Statement or Prospectus and (B) there are no agreements,

                                      -19-
<PAGE>
 
          contracts, indentures, leases or other instruments known to such
          counsel that are required to be described in the Registration
          Statement or the Prospectus or to be filed as an exhibit to the
          Registration Statement or to an Incorporated Document, as the case may
          be, that are not described or filed as required;

          (xiii)  The statements in the Registration Statement and Prospectus,
          insofar as they are descriptions of contracts, agreements, instruments
          or other legal documents, or refer to statements of law or legal
          conclusions, are accurate summaries thereof and present fairly the
          information required to be shown in all material respects;

          (xiv)  Upon delivery of the Securities being sold by EESI to the
          several Underwriters pursuant to this Agreement and payment therefor
          as contemplated herein, each Underwriter that has purchased such
          Securities in good faith and without notice of any adverse claim
          within the meaning of the Uniform Commercial Code will acquire good
          title to such Securities, free and clear of any lien, claim, security
          interest, or other encumbrance, restriction on transfer or other
          defect in title;

          (xv)   The Securities being sold by the Selling Stockholders are duly
          listed, admitted and authorized for trading on the NASDAQ National
          Market; and the Securities being sold by EESI, subject to official
          notice of issuance, have been approved for listing on the NASDAQ
          National Market; and

          (xvi)  EESI is not an "investment company" or a person "controlled" by
          an "investment company" within the meaning of the Investment Company
          Act of 1940, as amended.

     In addition, such counsel shall state that based on telephonic confirmation
from the Commission on May 27, 1998, the Registration Statement and all post-
effective amendments, if any, have become effective under the Securities Act and
no stop order suspending the effectiveness of the Registration Statement has
been issued and no proceedings for that purpose are pending before or
contemplated by the Commission.

     Such counsel shall also state that although such counsel has not undertaken
to determine independently, and does not assume any responsibility for, the
accuracy or completeness of the statements in the Registration Statement, such
counsel has participated in conferences with officers and other representatives
of EESI and its Subsidiaries, representatives of the independent public
accountants of EESI and representatives of the Underwriters at which the
contents of the Registration Statement and the Prospectus (including the
Incorporated Documents) and related matters were reviewed and discussed, and
participated in the preparation of the Registration Statement and the Prospectus
and nothing has come to the attention of such counsel that has caused such
counsel to believe that the Registration Statement (including the Incorporated

                                      -20-
<PAGE>
 
Documents) at the time the Registration Statement became effective, or as of the
date hereof, or the Prospectus, as of its date and as of the Closing Date (or
any settlement date pursuant to Section 3 hereof), as the case may be, contained
an untrue statement of a material fact or omitted to state a material fact
required to be stated therein or necessary to make the statements therein, in
the light of the circumstances under which they were made, not misleading or
that any amendment or supplement to the Prospectus, as of its respective date,
and as of the Closing Date (or any settlement date pursuant to Section 3
hereof), as the case may be, contained any untrue statement of a material fact
or omitted 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 (it being understood that such counsel need express no opinion with
respect to the financial statements and the notes thereto and the schedules and
other financial and statistical data included in the Registration Statement or
the Prospectus or any Incorporated Document).

          (c) You shall have received on the Closing Date, an opinion of Robert
M. Kramer & Associates, P.C. dated the Closing Date and addressed to you, as
Representatives of the several Underwriters, to the effect that:

          (i) EESI and each of the Subsidiaries, to the knowledge of such
          counsel, has full authority and all necessary governmental
          authorizations, approvals, orders, licenses, certificates, franchises
          and permits of and from all governmental regulatory officials and
          bodies (except where the failure so to have any such authorizations,
          approvals, orders, licenses, certificates, franchises or permits,
          individually or in the aggregate, would not have a material adverse
          effect on the condition (financial or other), business, properties,
          net worth or results of operations of EESI and the Subsidiaries taken
          as a whole, to own their respective properties and to conduct their
          respective businesses as now being conducted, as described in the
          Prospectus;

          (ii)  Except as disclosed in the Prospectus, EESI owns of record, all
          the outstanding shares of capital stock of each of the Subsidiaries,
          free and clear of any lien, adverse claim, security interest, equity,
          or other encumbrance;

          (iii) None of EESI or any Subsidiary is in violation of its
          certificate or articles of incorporation or by-laws or other
          organizational documents or, to the knowledge of such counsel, in
          default in the performance or observance of any material obligation,
          agreement or condition contained in any bond, debenture, note or other
          evidence of indebtedness, or other material agreement, lease or
          instrument, except as may be disclosed in the Prospectus;

          (iv)  Neither the issuance, offer, sale or delivery of the Securities,
          the execution, delivery or performance of this Agreement, compliance
          by EESI with the provisions hereof, nor consummation by EESI of the
          transactions contemplated hereby constitutes or will constitute a
          breach of, or a default under,

                                      -21-
<PAGE>
 
          or will result in the creation or imposition of any lien, charge or
          encumbrance upon any property or assets of EESI or of any of the
          Subsidiaries pursuant to the terms of any material agreement,
          indenture, lease or other instrument to which EESI or any of the
          Subsidiaries is a party or by which any of them or any of their
          respective properties is bound which has been described in or filed as
          an exhibit to the Registration Statement or to an Incorporated
          Document, or is known to such counsel after due inquiry;

          (v) Other than as described or contemplated in the Prospectus, there
          are no material legal or governmental proceedings pending or, to the
          knowledge of such counsel, threatened against EESI or any of the
          Subsidiaries, or to which EESI or any of the Subsidiaries or any of
          their property, is subject, which are required to be described in the
          Registration Statement or Prospectus;

          (vi)  To the knowledge of such counsel, there are no agreements,
          contracts, indentures, leases or other instruments that are required
          to be described in the Registration Statement or the Prospectus or to
          be filed as an exhibit to the Registration Statement or any
          Incorporated Document that are not described or filed as required, as
          the case may be;

          (vii)  To the knowledge of such counsel, neither EESI nor any of the
          Subsidiaries is in violation of any law, ordinance, administrative or
          governmental rule or regulation applicable to EESI or any of the
          Subsidiaries or of any decree of any court or governmental agency or
          body having jurisdiction over EESI or any of the Subsidiaries, except
          as disclosed in the Prospectus;

          (viii)  To the knowledge of such counsel, except as described in the
          Prospectus, there are no outstanding options, warrants or other rights
          calling for the issuance of, and such counsel does not know of any
          commitment, plan or arrangement to issue, any shares of capital stock
          of EESI or any security convertible into or exchangeable or
          exercisable for capital stock of EESI; and

          (ix)  Except as described in the Prospectus, there is no holder of any
          security of EESI or any other person who has the right, contractual or
          otherwise, to cause EESI to sell or otherwise issue to them, or to
          permit them to underwrite the sale of, the Securities or the right to
          have any Common Stock or other securities of EESI included in the
          Registration Statement or the right, as a result of the filing of the
          Registration Statement, to require registration under the Securities
          Act of any shares of Common Stock or other securities of EESI, which
          right has not been waived.

          (d) You shall have received on the Closing Date, an opinion of each of
(i) Jackson & Kelly, (ii) Walton & Vance, (iii) Varnum Riddering Schmidt &
Howlett LLP, (iv) 

                                      -22-
<PAGE>
 
Sherrill & Roof L.L.P., (v) Carlton, Fields, Ward, Emmanuel, Smith & Cutler,
P.A., (vi) Phillips Nizer Benjamin Krim & Ballon LLP and (vii) Lynowes and
Blocher LLP, dated the Closing Date and addressed to you, as Representatives of
the several Underwriters, to the effect that:

          (i) Each of  the Subsidiaries  identified opposite such counsel's name
          in Schedule VI hereto (collectively, the "Schedule VI Subsidiaries")
          is validly existing as a corporation in good standing under the laws
          of the jurisdiction of its organization, with full corporate power and
          authority to own, lease, and operate its properties and to conduct its
          business as described in the Registration Statement and the Prospectus
          and is duly qualified to conduct its business and is in good standing
          in each jurisdiction or place where the nature of its properties or
          the conduct of its business requires such registration or
          qualification, except where the failure so to register or qualify does
          not have a material adverse effect on the condition (financial or
          other), business, properties, net worth or results of operations of
          EESI and the Subsidiaries taken as a whole;

          (ii)  All the outstanding shares of capital stock of each of the
          Schedule VI Subsidiaries have been duly authorized and validly issued,
          are fully paid and nonassessable, and, except as otherwise set forth
          in the Prospectus, are owned of record by EESI; and

          (iii) To such counsel's knowledge, none of the Schedule VI
          Subsidiaries is in violation of its certificate or articles of
          incorporation or by-laws, or other organizational documents.

          (e) The Selling Stockholders shall have furnished to the
Representatives the opinion of Snell & Smith, A Professional Corporation,
counsel for the Selling Stockholders, dated the Closing Date and addressed to
the Representatives, to the effect that:

          (i) Each Selling Stockholder is a limited partnership duly formed and
          validly existing under the laws of the respective jurisdiction of its
          formation; each Selling Stockholder has the full power and authority
          to execute, deliver and perform its obligations under this Agreement;

          (ii)  this Agreement has been duly authorized, executed and delivered
          by the Selling Stockholders, and each Selling Stockholder has full
          legal right and authority to sell, transfer and deliver in the manner
          provided in this Agreement the Securities being sold by such Selling
          Stockholder hereunder;

          (iii)  the delivery by each Selling Stockholder to the several
          Underwriters of certificates for the Securities being sold hereunder
          by such Selling Stockholder against payment therefor as provided
          herein, will pass good and marketable title 

                                      -23-
<PAGE>
 
          to such Securities to the several Underwriters, free and clear of all
          liens, encumbrances, equities and claims whatsoever;

          (iv)  no consent, approval, authorization or order of any court or
          governmental agency or body is required for the consummation by any
          Selling Stockholder of the transactions contemplated herein, except
          such as may have been obtained under the Act and such as may be
          required under the blue sky laws of any jurisdiction in connection
          with the purchase and distribution of the Securities by the
          Underwriters and such other approvals (specified in such opinion) as
          have been obtained; and

          (v) neither the sale of the Securities being sold by any Selling
          Stockholder nor the consummation of any other of the transactions
          herein contemplated by any Selling Stockholder or the fulfillment of
          the terms hereof by any Selling Stockholder will conflict with, result
          in a breach or violation of, or constitute a default under any law or
          the charter or by-laws of the Selling Stockholder (or similar
          organizational documents) or the terms of any indenture or other
          agreement or instrument known to such counsel and to which any Selling
          Stockholder is a party or bound, or any judgment, order or decree
          known to such counsel to be applicable to any Selling Stockholder of
          any court, regulatory body, administrative agency, governmental body
          or arbitrator having jurisdiction over any Selling Stockholder.

In rendering such opinion, such counsel may rely as to matters of fact, to the
extent they deem proper, on certificates of responsible officers of the Selling
Stockholders and public officials. The opinion of such counsel may be limited to
the federal law of the United States of America, the laws of the State of Texas,
the Delaware Revised Uniform Limited Partnership Act, and the Delaware Limited
Liability Company Act and may assume that the laws of any other applicable
jurisdictions are the same as the laws of the State of Texas.  The opinion of
such counsel shall be rendered to the Underwriters at the request of EESI and
shall so state therein.

          (f) The Representatives shall have received from Morgan, Lewis &
Bockius LLP, counsel for the Underwriters, such opinion or opinions, dated the
Closing Date and addressed to the Representatives, with respect to the issuance
and sale of the Securities, the Registration Statement, the Prospectus and other
related matters as the Representatives may reasonably require, and EESI and the
Selling Stockholders shall have furnished to such counsel such documents as they
request for the purpose of enabling them to pass upon such matters.  The opinion
or opinions of such counsel shall be rendered to the Underwriters at the request
of EESI and shall so state therein.

          (g) EESI shall have furnished to the Representatives a certificate of
EESI signed by the respective Chairman of the Board and the principal financial
or accounting officer 

                                      -24-
<PAGE>
 
of EESI, dated the Closing Date, to the effect that the signers of such
certificates have carefully examined the Registration Statement and the
Prospectus and this Agreement and that:

          (i) the representations and warranties of EESI contained in this
          Agreement are true and correct in all material respects on and as of
          the Closing Date with the same effect as if made on the Closing Date
          and EESI has complied with all the agreements and satisfied all the
          conditions on its part to be performed or satisfied at or prior to the
          Closing Date;

          (ii)  no stop order suspending the effectiveness of the Registration
          Statement has been issued and no proceedings for that purpose have
          been instituted or, to EESI's knowledge, threatened; and

          (iii)  since the date of the most recent financial statements included
          in the Prospectus, there has been no material adverse effect on the
          condition (financial or otherwise), prospects, earnings, business or
          properties of EESI and its Subsidiaries, taken as whole, whether or
          not arising from transactions in the ordinary course of business,
          except as set forth in or contemplated in the Prospectus.

          (h) Each Selling Stockholder shall have furnished to the
Representatives a certificate, signed by a Manager of the General Partner of
such Selling Stockholder, dated the Closing Date, to the effect that the signers
of such certificate have carefully examined the Registration Statement and the
Prospectus and this Agreement and that the representations and warranties of
such Selling Stockholder in this Agreement are true and correct in all material
respects on and as of the Closing Date to the same effect as if made on the
Closing Date.

          (i) You shall have received letters addressed to you, as
Representatives of the several Underwriters, and dated the date hereof and the
Closing Date from each of (i) Ernst & Young LLP, (ii) Deloitte & Touche LLP,
(iii) Daniel P. Irwin & Associates P.C., (iv) BDO Seidman, LLP, (v) Bardall,
Weintraub P.C., (vi) Boyer & Ritter, (vii) Paternostro, Callahan & DeFreitas,
LLP and (viii) B.J. Klinger & Co., P.C., each of which are independent certified
public accountants, substantially in the forms heretofore approved by you.

          (j) Subsequent to the Execution Time or, if earlier, the dates as of
which information is given in the Registration Statement (exclusive of any
amendment thereof) and the Prospectus, there shall not have been (i) any change
or decrease specified in the letter or letters referred to in paragraph (i) of
this Section 6 or (ii) any change, or any development involving a prospective
change, in or affecting the condition (financial or otherwise), earnings,
business or properties of EESI and its Subsidiaries, taken as a whole, whether
or not arising from transactions in the ordinary course of business, except as
set forth in or contemplated in the Prospectus the effect of which, in any case
referred to in clause (i) or (ii) above, is, in the sole judgment of the
Representatives, so material and adverse as to make it impractical or
inadvisable 

                                      -25-
<PAGE>
 
to proceed with the offering or delivery of the Securities as contemplated by
the Registration Statement (exclusive of any amendment thereof) and the
Prospectus.

          (k) At the Execution Time, EESI shall have furnished to you the "lock-
up" letters described in Section 5(A)(i).

          (l) The Securities shall have been listed or approved for quotation
upon notice of issuance on the NASDAQ National Market.

          (m) Prior to the Closing Date, EESI and the Selling Stockholders shall
deliver to the Representatives on each Closing Date such opinions, certificates,
letters and other documents as the Representatives shall reasonably request.
All such opinions, certificates, letters and other documents will be in
compliance with the provisions hereof only if they are satisfactory in form and
substance to you and your counsel.

     If any of the conditions specified in this Section 6 shall not have been
fulfilled in all material respects when and as provided in this Agreement, or if
any of the opinions and certificates mentioned above or elsewhere in this
Agreement shall not be in all material respects reasonably satisfactory in form
and substance to the Representatives and counsel for the Underwriters, this
Agreement and all obligations of the Underwriters hereunder may be canceled at,
or at any time prior to, the Closing Date by the Representatives.  Notice of
such cancellation shall be given to EESI and each Selling Stockholder in writing
or by telephone or facsimile confirmed in writing.

     The documents required to be delivered by this Section 6 shall be delivered
at the offices of Morgan, Lewis & Bockius LLP, counsel for the Underwriters, at
101 Park Avenue, New York, NY 10178, on the Closing Date.

     7.   Reimbursement of Underwriters' Expenses.  If the sale of the
          ----------------------------------------                    
Securities provided for herein is not consummated because any condition to the
obligations of the Underwriters set forth in Section 6 hereof is not satisfied,
because of any termination pursuant to Section 10 hereof or because of any
refusal, inability or failure on the part of EESI or any Selling Stockholder to
perform any agreement herein or comply with any provision hereof other than by
reason of a default by any of the Underwriters, EESI will reimburse the
Underwriters severally through Salomon Smith Barney on demand for all out-of-
pocket expenses (including reasonable fees and disbursements of counsel) that
shall have been incurred by them in connection with the proposed purchase and
sale of the Securities.  If EESI is required to make any payments to the
Underwriters under this Section 7 because of any Selling Stockholder's refusal,
inability or failure to satisfy any condition to the obligations of the
Underwriters set forth in Section 6, the Selling Stockholders pro rata in
                                                              --- ----   
proportion to the percentage of Securities to be sold by each shall reimburse
EESI on demand for all amounts so paid.

                                      -26-
<PAGE>
 
     8.   Indemnification and Contribution.     (a)  EESI and each of the
          ---------------------------------                              
Selling Stockholders, jointly and severally, agree to indemnify and hold
harmless each Underwriter, the directors, officers, employees and agents of each
Underwriter and each person who controls any Underwriter within the meaning of
either the Securities Act or the Exchange Act against any and all losses,
claims, damages or liabilities, joint or several, to which they or any of them
may become subject under the Securities Act, the Exchange Act or other federal
or state statutory law or regulation, at common law or otherwise, insofar as
such losses, claims, damages or liabilities (or actions in respect thereof)
arise out of or are based upon any untrue statement or alleged untrue statement
of a material fact contained in the registration statement for the registration
of the Securities as originally filed or in any amendment thereof, or in the
Prospectus, or in any amendment thereof or supplement thereto, or arise out of
or are based upon the omission or alleged omission to state therein a material
fact required to be stated therein or necessary to make the statements therein
not misleading, and agrees to reimburse each such indemnified party, as
incurred, for any reasonable legal or other expenses incurred by them in
connection with investigating or defending any such loss, claim, damage,
liability or action except that EESI and the Selling Stockholders will not be
liable in any such case to the extent that any such loss, claim, damage or
liability arises out of or is based upon any such untrue statement or alleged
untrue statement or omission or alleged omission made therein in reliance upon
and in conformity with written information furnished to EESI by or on behalf of
any Underwriter through the Representatives specifically for inclusion therein;
provided, however, that the indemnification contained in the paragraph (a) with
- --------  -------                                                              
respect to any Prospectus (containing a preliminary prospectus supplement) shall
not inure to the benefit of any Underwriter (or to the benefit of any person
controlling such Underwriter) on account of any such loss, claim, damage,
liability or expense arising from the sale of the Securities by such Underwriter
to any person if a copy of the Prospectus shall not have been delivered or sent
to such person within the time required by the Securities Act and the untrue
statement or alleged untrue statement or omission or alleged omission of a
material fact contained in such Prospectus was corrected in the Prospectus
(containing the final prospectus supplement), provided that EESI has delivered
the Prospectus (containing the final prospectus supplement) to the several
Underwriters in requisite quantity on a timely basis to permit such delivery or
sending.  This indemnity agreement will be in addition to any liability which
EESI or the Selling Stockholders may otherwise have.

          (b) Each Underwriter severally and not jointly agrees to indemnify and
hold harmless EESI, each of its directors, each of its officers who signs the
Registration Statement, and each person who controls EESI within the meaning of
either the Securities Act or the Exchange Act and each Selling Stockholder, to
the same extent as the foregoing indemnity to each Underwriter, but only with
reference to written information relating to such Underwriter furnished to EESI
by or on behalf of such Underwriter through the Representatives specifically for
inclusion in the documents referred to in the foregoing indemnity.  This
indemnity agreement will be in addition to any liability which any Underwriter
may otherwise have.  EESI and each Selling Stockholder acknowledge that the
statements set forth in the last paragraph of the cover page regarding delivery
of the Securities, the legend in block capital letters on page S-2 related to
stabilization, syndicate covering transactions and penalty bids, and under the
heading 

                                      -27-
<PAGE>
 
"Underwriting", (i) the sentences related to concessions and reallowances and
(ii) the paragraph related to stabilization, syndicate covering transactions and
penalty bids in the Prospectus constitute the only information furnished in
writing by or on behalf of the several Underwriters for inclusion in the
Prospectus.

          (c) Promptly after receipt by an indemnified party under this Section
8 of notice of the commencement of any action, such indemnified party will, if a
claim in respect thereof is to be made against the indemnifying party under this
Section 8, notify the indemnifying party in writing of the commencement thereof;
but the failure so to notify the indemnifying party (i) will not relieve it from
liability under paragraph (a) or (b) above unless and to the extent it did not
otherwise learn of such action and such failure results in the forfeiture by the
indemnifying party of substantial rights and defenses and (ii) will not, in any
event, relieve the indemnifying party from any obligations to any indemnified
party other than the indemnification obligation provided in paragraph (a) or (b)
above.  The indemnifying party shall be entitled to appoint counsel of the
indemnifying party's choice at the indemnifying party's expense to represent the
indemnified party in any action for which indemnification is sought (in which
case the indemnifying party shall not thereafter be responsible for the fees and
expenses of any separate counsel retained by the indemnified party or parties
except as set forth below); provided, however, that such counsel shall be
                            --------  -------                            
satisfactory to the indemnified party. Notwithstanding the indemnifying party's
election to appoint counsel to represent the indemnified party in an action, the
indemnified party shall have the right to employ separate counsel (including
local counsel), and the indemnifying party shall bear the reasonable fees, costs
and expenses of such separate counsel if (i) the use of counsel chosen by the
indemnifying party to represent the indemnified party would present such counsel
with a conflict of interest, (ii) the actual or potential defendants in, or
targets of, any such action include both the indemnified party and the
indemnifying party and the indemnified party shall have reasonably concluded
that there may be legal defenses available to it and/or other indemnified
parties which are different from or additional to those available to the
indemnifying party, (iii) the indemnifying party shall not have employed counsel
satisfactory to the indemnified party to represent the indemnified party within
a reasonable time after notice of the institution of such action or (iv) the
indemnifying party shall authorize the indemnified party to employ separate
counsel at the expense of the indemnifying party.  An indemnifying party will
not, without the prior written consent of the indemnified parties, settle or
compromise or consent to the entry of any judgment with respect to any pending
or threatened claim, action, suit or proceeding in respect of which
indemnification or contribution may be sought hereunder (whether or not the
indemnified parties are actual or potential parties to such claim or action)
unless such settlement, compromise or consent includes an unconditional release
of each indemnified party from all liability arising out of such claim, action,
suit or proceeding.

          (d) In the event that the indemnity provided in paragraph (a) or (b)
of this Section 8 is unavailable or insufficient to hold harmless an indemnified
party for any reason, EESI and the Selling Stockholders, jointly and severally,
and the Underwriters severally agree to contribute to the aggregate losses,
claims, damages and liabilities (including reasonable legal or 

                                      -28-
<PAGE>
 
other expenses incurred in connection with investigating or defending same)
(collectively "Losses") to which EESI, the Selling Stockholders, and one or more
of the Underwriters may be subject in such proportion as is appropriate to
reflect the relative benefits received by EESI and the Selling Stockholders on
the one hand and by the Underwriters on the other from the offering of the
Securities; provided, however, that in no case shall any Underwriter (except as
            --------  -------
may be provided in any agreement among underwriters relating to the offering of
the Securities) be responsible for any amount in excess of the underwriting
discount or commission applicable to the Securities purchased by such
Underwriter hereunder. If the allocation provided by the immediately preceding
sentence is unavailable for any reason, EESI and the Selling Stockholders,
jointly and severally, and the Underwriters severally shall contribute in such
proportion as is appropriate to reflect not only such relative benefits but also
the relative fault of EESI and the Selling Stockholders on the one hand and of
the Underwriters on the other in connection with the statements or omissions
which resulted in such Losses as well as any other relevant equitable
considerations. Benefits received by EESI and the Selling Stockholders shall be
deemed to be equal to the total net proceeds from the offering (before deducting
expenses) received by them, and benefits received by the Underwriters shall be
deemed to be equal to the total underwriting discounts and commissions, in each
case as set forth on the cover page of the Prospectus. Relative fault shall be
determined by reference to, among other things, whether any untrue or any
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information provided by EESI or the Selling
Stockholders on the one hand or the Underwriters on the other, the intent of the
parties and their relative knowledge, access to information and opportunity to
correct or prevent such untrue statement or omission. EESI, the Selling
Stockholders and the Underwriters agree that it would not be just and equitable
if contribution were determined by pro rata allocation or any other method of
allocation which does not take account of the equitable considerations referred
to above. Notwithstanding the provisions of this paragraph (d), no person guilty
of fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. For purposes of this Section 8,
each person who controls an Underwriter within the meaning of either the
Securities Act or the Exchange Act and each director, officer, employee and
agent of an Underwriter shall have the same rights to contribution as such
Underwriter, and each person who controls EESI within the meaning of either the
Securities Act or the Exchange Act, each officer of EESI who shall have signed
the Registration Statement and each director of EESI shall have the same rights
to contribution as EESI, subject in each case to the applicable terms and
conditions of this paragraph (d).

          (e) The liability of each Selling Stockholder under such Selling
Stockholder's representations and warranties contained in Section 1(B) hereof
and under the indemnity and contribution agreements contained in this Section 8
shall be limited to an amount equal to the initial public offering price of the
Securities sold by such Selling Stockholder to the Underwriters.  EESI and the
Selling Stockholders may agree, as among themselves and without limiting the
rights of the Underwriters under this Agreement, as to the respective amounts of
such liability for which they each shall be responsible.

                                      -29-
<PAGE>
 
     9.   Default by an Underwriter.  If any one or more Underwriters shall fail
          --------------------------                                            
to purchase and pay for any of the Securities agreed to be purchased by such
Underwriter or Underwriters hereunder and such failure to purchase shall
constitute a default in the performance of its or their obligations under this
Agreement, the remaining Underwriters shall be obligated severally to take up
and pay for (in the respective proportions which the amount of Securities set
forth opposite their names in Schedule I hereto bears to the aggregate amount of
Securities set forth opposite the names of all the remaining Underwriters) the
Securities which the defaulting Underwriter or Underwriters agreed but failed to
purchase; provided, however, that in the event that the aggregate amount of
          --------  -------                                                
Securities which the defaulting Underwriter or Underwriters agreed but failed to
purchase shall exceed 10% of the aggregate amount of Securities set forth in
Schedule I hereto, the remaining Underwriters shall have the right to purchase
all, but shall not be under any obligation to purchase any, of the Securities,
and if such nondefaulting Underwriters do not purchase all the Securities, this
Agreement will terminate without liability to any nondefaulting Underwriter, the
Selling Stockholders or EESI.  In the event of a default by any Underwriter as
set forth in this Section 9, the Closing Date shall be postponed for such
period, not exceeding five Business Days, as the Representatives shall determine
in order that the required changes in the Registration Statement and the
Prospectus or in any other documents or arrangements may be effected.  Nothing
contained in this Agreement shall relieve any defaulting Underwriter of its
liability, if any, to EESI, the Selling Stockholders and any nondefaulting
Underwriter for damages occasioned by its default hereunder.

     10.  Termination.  This Agreement shall be subject to termination in the
          ------------                                                       
absolute discretion of the Representatives, by notice given to EESI prior to
delivery of and payment for the Securities, if at any time prior to such time
(i) trading in EESI's Common Stock shall have been suspended by the Commission
or the NASDAQ National Market or trading in securities generally on the New York
Stock Exchange or the NASDAQ National Market shall have been suspended or
limited or minimum prices shall have been established on either of such Exchange
or National Market, (ii) a banking moratorium shall have been declared either by
federal or New York State authorities or (iii) there shall have occurred any
outbreak or escalation of hostilities, declaration by the United States of a
national emergency or war or other calamity or crisis the effect of which on
financial markets is such as to make it, in the sole judgment of the
Representatives, impractical or inadvisable to proceed with the offering or
delivery of the Securities as contemplated by the Prospectus.

     11.  Representations and Indemnities to Survive.  The respective
          -------------------------------------------                
agreements, representations, warranties, indemnities and other statements of
EESI or its officers, of each Selling Stockholder and of the Underwriters set
forth in or made pursuant to this Agreement will remain in full force and
effect, regardless of any investigation made by or on behalf of any Underwriter,
any Selling Stockholder or EESI or any of the officers, directors or controlling
persons referred to in Section 8 hereof, and will survive delivery of and
payment for the Securities.  The provisions of Sections 7 and 8 hereof shall
survive the termination or cancellation of this Agreement.

                                      -30-
<PAGE>
 
     12.  Notices.  All communications hereunder will be in writing and
          --------                                                     
effective only on receipt, and, if sent to the Representatives, will be mailed,
delivered or telefaxed to the Salomon Smith Barney General Counsel (fax no.:
(212) 816-7912) and confirmed to the General Counsel, Salomon Smith Barney, at
388 Greenwich Street, New York, New York, 10013, Attention: General Counsel,
with a copy mailed, delivered or telefaxed to Morgan, Lewis & Bockius LLP, at
101 Park Avenue, New York, New York, 10178-0060, (fax no. (212) 309-6273),
Attention: Stephen P. Farrell; or, if sent to EESI, will be mailed, delivered or
telefaxed to 1000 Crawford Place, Mt. Laurel, New Jersey 08054, (fax no. (609)
231-1152), Attention: Robert M. Kramer, General Counsel, with a copy mailed,
delivered or telefaxed to Drinker Biddle & Reath, LLP, 1100 Philadelphia
National Bank Bldg, 1345 Chestnut Street, Philadelphia, PA 19107-3496, fax
number (215) 988-2757, Attention: H. John Michel, Jr.; or if sent to any Selling
Stockholder, will be mailed, delivered or telefaxed and confirmed to it at the
address set forth in Schedule II hereto.

     13.  Successors.  This Agreement will inure to the benefit of and be
          -----------                                                    
binding upon the parties hereto and their respective successors and the officers
and directors and controlling persons referred to in Section 8 hereof, and no
other person will have any right or obligation hereunder.

     14.  Applicable Law.  This Agreement will be governed by and construed in
          ---------------                                                     
accordance with the laws of the State of New York applicable to contracts made
and to be performed within the State of New York.

     15.  Counterparts.  This Agreement may be signed in one or more
          -------------                                             
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same agreement.

     16.  Headings.  The section headings used herein are for convenience only
          ---------                                                           
and shall not affect the construction hereof.

     17.  Definitions.  The terms which follow, when used in this Agreement,
          ------------                                                      
shall have the meanings indicated.

     "Business Day" shall mean any day other than a Saturday, a Sunday or a
     legal holiday or a day on which banking institutions or trust companies are
     authorized or obligated by law to close in New York City.

     "Commission" shall mean the Securities and Exchange Commission.

     "Effective Date" shall mean each date and time that the Registration
     Statement, any post-effective amendment or amendments thereto and any Rule
     462(b) Registration Statement became or become effective.

                                      -31-
<PAGE>
 
     "Execution Time" shall mean the date and time that this Agreement is
     executed and delivered by the parties hereto.

     "Rule 462(b) Registration Statement" shall mean a registration statement
     and any amendments thereto filed pursuant to Rule 462(b) relating to the
     offering covered by the initial registration statement.

     "Salomon Smith Barney" shall mean Smith Barney Inc. or Salomon Brothers Inc
     to the extent that either such party is a signatory to this Agreement.



                           [Signature page follows.]

                                      -32-
<PAGE>
 
     If the foregoing is in accordance with your understanding of our agreement,
please sign and return to us the enclosed duplicate hereof, whereupon this
letter and your acceptance shall represent a binding agreement among EESI, each
of the Selling Stockholders and the several Underwriters.

                              Very truly yours,

                              EASTERN ENVIRONMENTAL SERVICES, INC.

                                   /s/ Louis D. Paolino, Jr.
                              By:___________________________________
                                  Louis D. Paolino, Jr
                                  Chairman of the Board, President
                                     and Chief Executive Officer

                              ENVIRONMENTAL OPPORTUNITIES
                              FUND, L.P.

                                        By: Environmental Opportunities
                                            Management Company, L.L.C.,
                                            General Partner

                                   /s/ Bruce R. McMaken
                              By:___________________________________
                                     Name: Bruce R. McMaken
                                     Title:   Manager

                              ENVIRONMENTAL OPPORTUNITIES
                              FUND (CAYMAN), L.P.

                                    By: Environmental Opportunities
                                       Management Company, L.L.C.,
                                       General Partner

                                   /s/ Bruce R. McMaken
                              By:___________________________________
                                     Name: Bruce R. McMaken

                                     Title:    Manager

                                      -33-
<PAGE>
 
The foregoing Agreement is hereby
confirmed and accepted as of the
date first above written.

SMITH BARNEY INC.
CIBC OPPENHEIMER CORP.
MERRILL LYNCH, PIERCE, FENNER & SMITH
            INCORPORATED
PACIFIC GROWTH EQUITIES, INC.

By:  SMITH BARNEY INC.

     /s/ Bruce Cummings
By:___________________________________
      Name:
      Title:

For themselves and the other
several Underwriters named in
Schedule I to the foregoing
Agreement.

                                      -34-
<PAGE>
 
                                   SCHEDULE I

                                  UNDERWRITERS


<TABLE>
<CAPTION>
                                             Number of
                                           Underwritten
Name                                      Securities to be
                                             Purchased
- ---------------------------------------   ----------------
<S>                                      <C>
Smith Barney Inc.                            3,150,000

CIBC Oppenheimer Corp.                       1,800,000 

Merrill Lynch, Pierce, Fenner & Smith        
                     Incorporated            1,800,000

Pacific Growth Equities, Inc.                  750,000
                                             ---------
   Total                                     7,500,000
</TABLE>

                                      -35-
<PAGE>
 
                                  SCHEDULE II

                              SELLING STOCKHOLDERS


<TABLE>
<CAPTION>
                               Number of Underwritten
Selling Stockholders           Securities to be Sold
- -----------------------------  ----------------------
<S>                            <C>
Environmental Opportunities
 Fund, L.P.
c/o Sanders Morris Mundy
3100 Chase Tower
Houston, TX  77002
713-250-4294 (fax)............                444,850
 
Environmental Opportunities
 Fund (Cayman), L.P.
c/o Sanders Morris Mundy
3100 Chase Tower
Houston, TX  77002
713-250-4294 (fax)............                 55,150 
</TABLE>

                                      -36-
<PAGE>
 
                                  SCHEDULE III

                           FORM OF LOCK-UP AGREEMENT



                      Eastern Environmental Services, Inc.
                      Public Offering of ______Securities
                                of Common Stock



                                                                          , 1998

Smith Barney Inc.
CIBC Oppenheimer Corp.
Merrill Lynch, Pierce, Fenner & Smith
            Incorporated
Pacific Growth Equities, Inc.
  As Representatives of the several Underwriters,
c/o Salomon Smith Barney
388 Greenwich Street
New York, New York 10013

Ladies and Gentlemen:

  The undersigned understands that you and certain other firms propose to enter
into an Underwriting Agreement (the "Underwriting Agreement") providing for the
purchase by you and such other firms (the "Underwriters") of shares (the
"Securities") of Common Stock, par value $.01 per share (the "Common Stock"), of
Eastern Environmental Services, Inc. ("EESI") and that the Underwriters propose
to reoffer the Securities to the public.

  In consideration of the execution of the Underwriting Agreement by the
Underwriters, and for other good and valuable consideration, the undersigned
hereby irrevocably agrees that without the prior written consent of Smith Barney
Inc. the undersigned will not sell, offer to sell, solicit an offer to buy,
contract to sell, grant any option to purchase, or otherwise transfer or dispose
of, any shares of Common Stock, or any securities convertible into or
exercisable or exchangeable for Common Stock, for a period of 120 days after the
date of the Underwriting Agreement relating to the offering of the Securities to
the public by the Underwriters, except that the undersigned may make gifts of
such securities to members of the undersigned's "immediate 

                                      -37-
<PAGE>
 
family" (as such term is defined under Item 404 of Regulation S-K under the
Securities Act of 1933) or transfer such securities to one or more trusts
established for the benefit of members of the undersigned's immediate family;
provided, that any such transferee agrees in writing to be bound by the terms 
- --------
hereof. Notwithstanding the foregoing, nothing herein shall prohibit the
undersigned from exercising any options granted to the undersigned under any
Company stock option or other benefit or incentive plan or warrants held by the
undersigned so long as the shares of Common Stock underlying such options or
warrants are held subject to the terms of this letter.

  The undersigned agrees that the provisions of this agreement shall be binding
also upon the successors, assigns, heirs and personal representatives of the
undersigned.

  In furtherance of the foregoing, EESI and American Stock Transfer and Trust
Company, its transfer agent, are hereby authorized to decline to make any
transfer of securities if such transfer would constitute a violation or breach
of this letter agreement.

  It is understood that, if the Underwriting Agreement does not become effective
in accordance with its terms on or before _____________________________, 1998 or
if the Underwriting Agreement (other than the provisions thereof which survive
termination) shall terminate or be terminated prior to payment for and delivery
of the Shares, this letter agreement shall become null and void and of no
further force or effect.

                                        Very truly yours,


                                        --------------------------------------
                                        [Name of Signatory]

                                      -38-
<PAGE>
 
                                  SCHEDULE IV

                            DESIGNATED ACQUISITIONS



Brambles USA

Brambles Waste Services, Inc.

Atlantic Waste Disposal, Inc.

Atlantic of New York, Inc.

Atlantic Transportation Services, Inc.

Atlantic Collection, Inc.

City of Bethlehem Landfill

Chesser Island Road Landfill, Inc.

Kimmins Corp.

Transcor Waste Services, Inc.

Kimmins Recycling Corp.

                                      -39-
<PAGE>
 
                                   SCHEDULE V

                                  SUBSIDIARIES

<TABLE>
<CAPTION>
SUBSIDIARY                                         STATE OF INCORPORATION
- -------------------------------------------------  ----------------------
<S>                                                <C>
 
Allied Waste Services, Inc.                        Delaware
Eastern Waste of New York, Inc.                    Delaware
Super Kwik, Inc.                                   Pennsylvania
R & A Bender, Inc.                                 Pennsylvania
Eastern Waste of L.I., Inc.                        Delaware
Eastern Container Corporation                      Delaware
Apex Waste Services, Inc.                          Pennsylvania
Eastern Environmental Services of Indiana, Inc.    Delaware
Eastern Transfer of New York, Inc.                 Delaware
Soil Remediation of Philadelphia, Inc.             Delaware
Pine Grove, Inc.                                   Delaware
Pine Grove Hauling, Inc.                           Pennsylvania
Pine Grove Landfill, Inc.                          Pennsylvania
Hamm's Sanitation, Inc.                            New Jersey
H.S.S. Inc.                                        New Jersey
Kelly Run Sanitation Inc.                          Pennsylvania
Hudson Jersey Sanitation Co.                       New Jersey
West Milford Haulage, Inc.                         New Jersey
Specialized Recycling Technologies                 New Jersey
Frank Stamato & Co.                                New Jersey
Eastern Recycling of New Jersey, Inc.              Delaware
Eastern Waste of New Jersey, Inc.                  Delaware
Ecology Systems, Inc.                              New Jersey
Tactical Management, Inc.                          New Jersey
Transpro, Inc.                                     New Jersey
</TABLE>

                                      -40-
<PAGE>
 
                                  SCHEDULE VI

                                  SUBSIDIARIES

<TABLE>
<CAPTION>
                                                                      STATE OF
COUNSEL                                     SUBSIDIARY             INCORPORATION
- --------------------------------  -------------------------------  -------------
<S>                               <C>                              <C>
Jackson & Kelly                   S & S Grading, Inc.              West Virginia
 
Walton & Vance                    Pulaski Grading, Inc.            Kentucky
                                  Bluegrass Containment, Inc.
 
Varnum Riddering Schmidt &        Olney Sanitary System, Inc.      Illinois
 Howlett LLP
                                  S & S Grading of Illinois, Inc.
 
Sherrill & Roof L.L.P.            Carolina Grading, Inc.           South Carolina
 
Carlton, Fields, Ward,            Bayside of Marion, Inc.          Florida
 Emmanuel, Smith & Cutler, PA
                                  Eastern Environmental Services
                                  of Florida, Inc.
                                  Waste Services of South
                                  Florida, Inc.
                                  Waste-X Services, Inc.
 
Phillips Nizer Benjamin Krim &    Donno Company, Inc.              New York
 Ballon
                                  Residential Services, Inc.
                                  Suffolk Waste Systems, Inc.
                                  N.R.T. Realty Corp.
 
Lynowes and Blocher LLP           Pappy, Inc.                      Maryland
                                  Hartford Disposal, Inc.
</TABLE>

                                      -41-

<PAGE>
 
                                                            Exhibit 5
                                                            ---------





                                 May 27, 1998


Eastern Environmental Services, Inc.
1000 Crawford Place
Suite 400
Mt. Laurel, New Jersey  08054


Re:  Eastern Environmental Services, Inc.
     Securities and Exchange Commission
     Registration Statement on Form S-3 (Registration No. 333-49613)
     ---------------------------------------------------------------


Ladies and Gentlemen:

  We have acted as counsel to Eastern Environmental Services, Inc., a Delaware
corporation (the "Company"), in connection with the preparation and filing with
the Securities and Exchange Commission of a Registration Statement on Form S-3
(Registration No. 333-49613), as amended (the "Registration Statement"), under
the Securities Act of 1933, as amended, and the preparation of a Prospectus
Supplement dated May 20, 1998 (the "Prospectus Supplement") to the prospectus
included in the Registration Statement, relating to the public offering of
7,000,000 shares of the Company's common stock, par value $.01 per share
("Common Stock"), plus up to an additional 1,125,000 shares of Common Stock to
cover over-allotments, to be issued and sold by the Company (collectively, the
"Company Shares") and 500,000 shares of Common Stock to be sold by the Selling
Stockholders (the "Selling Stockholder Shares") as provided in the Prospectus
Supplement (the Company Shares and the Selling Stockholder Shares being
collectively referred to herein as the "Offered Shares").

  In this connection, we have examined the originals or copies, certified or
otherwise identified to our satisfaction, of the Certificate of Incorporation
and the By-laws of the Company, each as amended through the date hereof,
resolutions of the Company's Board of Directors, and such other documents and
corporate records relating to the Company and the issuance and sale of the
Offered Shares as we have deemed appropriate.  This opinion is based exclusively
on the General Corporation Law of the State of Delaware.

  In all cases, we have assumed the legal capacity of each natural person
signing any of the documents and corporate records examined by us, the
genuineness of signatures, the authenticity of documents submitted to us as
originals, the conformity to authentic original documents of documents submitted
to us as copies and the accuracy and completeness of all corporate records and
other information made available to us by the Company.

  On the basis of the foregoing, we are of the opinion that the 
<PAGE>
 
Selling Stockholder Shares have been validly issued and are fully paid and
nonassessable by the Company and the Company Shares have been duly and validly
authorized for issuance and, when issued and paid for in the manner as described
in the Prospectus Supplement, will have been validly issued, fully paid and non-
assessable by the Company.

  We hereby consent to the reference of our firm under the caption "Validity of
Common Stock" in the Prospectus Supplement and to the filing of this opinion as
an exhibit to the Company's Current Report on Form 8-K dated May 27, 1998 and to
the incorporation by reference of this opinion in the Registration Statement.
In giving this consent, we do not admit that we come within the categories of
persons whose consent is required under Section 7 of the Securities Act.

                                          Very truly yours,

                                          /s/ Drinker Biddle & Reath LLP

                                          DRINKER BIDDLE & REATH LLP


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