US CONCRETE INC
SC 13D, 1999-12-06
CONCRETE PRODUCTS, EXCEPT BLOCK & BRICK
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)


                               U.S. CONCRETE, INC.
                                (Name of Issuer)


                    COMMON STOCK, $0.001 PAR VALUE PER SHARE
                         (Title of Class of Securities)

                                   90333L 10 2
                                 (CUSIP Number)

                                Jerry Sklar, Esq.
                        50 North Front Street, Suite 1300
                            Memphis, Tennessee 38103
                                 (901) 543-8000
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)


                                  May 28, 1999
             (Date of Event Which Requires Filing of this Statement)



     If the filing  person has  previously  filed a statement on Schedule 13G to
report the acquisition  which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].





                         (Continued on following pages)



                                Page 1 of 4 Pages



<PAGE>



                                  SCHEDULE 13D
CUSIP No. 90333L 10 2                                         Page 2 of 4 Pages

(1)      NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         Neil Vannucci

(2)      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

                                                                     (a) /   /

                                                                     (b) /   /
(3)      SEC USE ONLY


(4)      SOURCE OF FUNDS

         OO

(5)      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEM 2(d) OR 2(e)

                                                                         /   /

(6)      CITIZENSHIP OR PLACE OF ORGANIZATION

         U.S.

Number of         (7)      SOLE VOTING POWER

Shares                     897,667 Shares

Beneficially      (8)      SHARED VOTING POWER

Owned By                   None

Each              (9)      SOLE DISPOSITIVE POWER

Reporting                  897,667 Shares

Person With       (10)     SHARED DISPOSITIVE POWER

                           None

(11)     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         897,667 Shares

(12)     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

         /   /

(13)     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.5%

(14)     TYPE OF REPORTING PERSON

         IN


<PAGE>




ITEM 1.  SECURITY AND ISSUER.

This  Schedule 13D relates to the common stock,  $0.001 par value per share,  of
U.S. Concrete, Inc., a Delaware corporation.  The principal executive offices of
the issuer are located at 1360 Post Oak  Boulevard,  Suite 800,  Houston,  Texas
77056.

ITEM 2.  IDENTITY AND BACKGROUND.

     (a) The reporting person is Neil Vannucci.

     (b) Mr. Vannucci's  business address is 150 South Linden Avenue,  South San
Francisco, California 94080.

     (c) Mr.  Vannucci's  principal  occupation  is  employment  as an executive
officer of Bay Cities  Building  Materials  Co., Inc., a maker of concrete ready
mix and a wholly-owned  subsidiary of U.S. Concrete,  Inc. The principal address
of the  employer is 150 South Linden  Avenue,  South San  Francisco,  California
94080.

     (d) Mr. Vannucci has not been convicted in a criminal proceeding (excluding
traffic violations or similar misdemeanors) during the last 5 years.

     (e) During the last 5 years,  Mr.  Vannucci has not been a party to a civil
proceeding of a judicial or administrative body of competent  jurisdiction which
resulted  in his having  been or being  subject to a  judgment,  decree or final
order  enjoining  future  violations of, or prohibiting or mandating  activities
subject  to,  Federal or State  securities  laws or finding any  violation  with
respect to such laws.

     (f) Neil Vannucci is a citizen of the United States.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS.

On March 22, 1999,  Bay Cities  Building  Materials Co., Inc. ("Bay Cities") and
its shareholders,  including Mr. Vannucci, entered into an Agreement and Plan of
Reorganization  (attached hereto as Exhibit 1) pursuant to which U.S.  Concrete,
Inc.  would  acquire all the  outstanding  stock of Bay Cities for cash and U.S.
Concrete,  Inc. common stock. Upon the closing of the transactions  contemplated
by the Agreement, Mr. Vannucci received the shares of U.S. Concrete, Inc. common
stock he now owns.

ITEM 4.  PURPOSE OF TRANSACTION.

Concurrently  with  entering  into  the  Bay  Cities  Reorganization   Agreement
discussed in Item 3, U.S.  Concrete,  Inc. entered into similar  agreements with
several  other  entities  with the  objective  of  effecting  an initial  public
offering.  Neil Vannucci  participated in this roll-up  transaction and obtained
his U.S. Concrete,  Inc. common stock for investment purposes. As an individual,
Mr.  Vannucci has no present  intentions  or  arrangements  to effect any of the
transactions  listed in Item 4(a)-(j) of Schedule 13D,  including any additional
purchases by him of U.S. Concrete, Inc. shares. Mr. Vannucci,  however, reserves
the right to make  additional  purchases from time to time. Any decision to make
such  additional  purchases will depend on various  factors,  including  without
limitation  the price of the  common  stock,  stock  market  conditions  and the
business prospects of U.S. Concrete, Inc.

In his professional capacity, Mr. Vannucci is a director of U.S. Concrete,  Inc.
and president of one of its wholly-owned subsidiaries.  Mr. Vannucci's duties as
an executive officer include locating  prospective  acquirees for U.S. Concrete,
Inc. These transactions generally result in the acquiree receiving both cash and
U.S. Concrete, Inc. stock.

<PAGE>

ITEM 5.  INTERESTS IN SECURITIES OF THE ISSUER.

(a) The  aggregate  number of shares of Common Stock  beneficially  owned by the
Neil Vannucci is 897,667,  which  constitutes 5.5% of the issued and outstanding
Common Stock.

(b) The power to vote and  dispose of the  shares  owned by Mr.  Vannucci  rests
solely with him.

(c) None.

(d) Not applicable.

(e) Not applicable.


ITEM 6.  CONTRACTS, ETC. WITH RESPECT TO SECURITIES OF THE ISSUER.

Pursuant to the agreement by which Mr. Vannucci acquired his U.S. Concrete, Inc.
Common Stock  (attached  hereto as an exhibit),  Mr.  Vannucci may not transfer,
encumber,  or otherwise  dispose of his shares prior to May 25, 2000.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBIT.

         1. Agreement and Plan of Reorganization  dated as of March 22, 1999, by
and among U.S. Concrete, Inc., Bay Cities Acquisition, Inc., Bay Cities Building
Materials Co., Inc. and Stockholders.


                                    SIGNATURE


         After reasonable inquiry and to the best of the knowledge and belief of
the  undersigned,  I certify that the information set forth in this statement is
true, complete and correct.


Date:                                                 /s/ Neil Vannucci
     ----------------------                           -----------------
                                                      Print Name: Neil Vannucci


<PAGE>



                                                                       EXHIBIT 1

                      AGREEMENT AND PLAN OF REORGANIZATION

                           DATED AS OF MARCH 22, 1999

                                  BY AND AMONG

                              U.S. CONCRETE, INC.,

                          BAY CITIES ACQUISITION INC.,

                     BAY CITIES BUILDING MATERIALS CO., INC.

                                       AND

                          THE STOCKHOLDERS NAMED HEREIN


Reverse Triangular Merger; Non-Delaware Company; Multiple Stockholders; Company
Financial Statements
<PAGE>
                      AGREEMENT AND PLAN OF REORGANIZATION


     THIS AGREEMENT AND PLAN OF REORGANIZATION  (this "Agreement") is made as of
March 22, 1999 by and among U.S. Concrete, Inc., a Delaware corporation ("USC"),
Bay  Cities  Acquisition  Inc.,  a  Delaware  corporation  and  a  wholly  owned
subsidiary  of USC ("USC  Sub"),  BAY CITIES  BUILDING  MATERIALS  CO.,  INC., a
California corporation (the "Company"),  and the persons listed on the signature
page hereof under the caption "Stockholders" (collectively,  the "Stockholders,"
and each of those persons, individually, a "Stockholder").

                              PRELIMINARY STATEMENT

     The parties to this Agreement have determined it is in their best long-term
interests to effect a business combination pursuant to which:

          (a) USC Sub will  merge into the  Company on the terms and  subject to
     the conditions set forth herein (that merger being the "Merger");

          (b) USC will acquire the stock of all or some of the  entities  listed
     in the  accompanying  Addendum 1 (each,  other than the Company,  an "Other
     Founding  Company"  and,  collectively  with  the  Company,  the  "Founding
     Companies")  pursuant to agreements  that are (i) similar to this Agreement
     and (ii) entered into among those entities and their equity owners, USC and
     subsidiaries of USC (collectively, the "Other Agreements"); and

          (c) USC will effect a public  offering  of shares of its common  stock
     and issue and sell those shares.

     The  respective  boards of  directors  of USC, USC Sub and the Company have
approved and adopted this  Agreement to effect a transaction  subject to Section
351 of the Code.

     NOW, THEREFORE, in consideration of the premises and the mutual agreements,
representations  and undertakings  this Agreement  contains,  the parties hereto
hereby agree as follows:

     Paragraph 1 CERTAIN DEFINED TERMS.  The following terms this Agreement uses
have the meanings this Paragraph 1 specifies.  Capitalized  terms this Agreement
uses,  but this  Paragraph 1 does not define,  have the meanings the preamble to
this  Agreement,  the  Preliminary  Statement above or Article IX of the Uniform
Provisions, as the case may be, specifies.

          "Acquired Business" means the Company.

          "Acquisition" means the Merger.

          "Acquisition Consideration" has the meaning Paragraph 2 specifies.

                                       -1-
<PAGE>
          "Additional Cash Consideration"  means the product of (i) the quotient
     obtained  from  dividing  (A) the sum of (i)  $5,302,046  and (ii) the 1998
     Permitted Restricted Payment by (B) $8.50 multiplied by (ii) the amount, if
     any, by which (A) the IPO Price exceeds (B) $8.50.

          "BCBM"  means BCBM  Transport,  Inc., a  California  corporation,  and
     wholly owned subsidiary of the Company.

          "Ceiling Amount" means the sum of (i) $24,508,185, (ii) the Additional
     Cash Consideration,  if any, (iii) the Positive Net Adjustment, if any, and
     (iv) the Negative Net  Adjustment,  if any;  provided,  however,  that, for
     purposes  of  Sections   6.06(b)  and  7.06(b),   the  Ceiling   Amount  is
     $15,906,139.

          "CGCL" means the General Corporation Law of the State of California.

          "Closing" has the meaning Paragraph 3 specifies.

          "Closing Date" means the IPO Pricing Date.

          "Company  Capital Stock" means the Common Stock,  no par value, of the
     Company.

          "Company Financial Statements" means the audited balance sheets of the
     Company as of  December  31,  1997 and  December  31,  1998 and the related
     audited statements of operations,  cash flows and shareholders'  equity for
     each of the  years  in the  three-year  period  ended  December  31,  1998,
     together with the related audit report of the Independent Accountants.

          "Counsel for the Company and the Stockholders"  means Ferrari,  Olsen,
     Ottoboni & Bebb, LLP.

          "Counsel for USC and USC Sub" means Baker & Botts, L.L.P.

          "Current Balance Sheet" means the audited balance sheet of the Company
     as of December 31, 1998.

          "Current Balance Sheet Date" means December 31, 1998.

          "Current Balance Sheet Date Working Capital" means ($666,000).

          "Effective Date" means the IPO Closing Date.

          "Executive   Employment  Agreement"  means  the  Employment  Agreement
     entered  into  effective as of the IPO Closing Date between the Company and
     Neil J. Vannucci.

                                       -2-
<PAGE>
          "Initial Financial Statements" means the Company Financial Statements.

          "Minimum Cash Balance" means $500,000.

          "Pro Rata  Share" of a  Stockholder  means:  (i) 47.97% in the case of
     Neil J.  Vannucci;  (ii)  47.97% in the case of Gloria  Satterfield;  (iii)
     2.03% in the case of Nino  Campagna;  and (iv) 2.03% in the case of William
     Monlux.

          "Responsible Officer" means Neil J. Vannucci.

          "Surviving  Corporation"  means the Company,  which the Certificate of
     Merger will designate as the surviving corporation of the Merger.

          "Termination Date" means May 31, 1999; provided,  however, that if (i)
     USC has filed the  Registration  Statement  with the SEC prior to that date
     and (ii) the Stockholders would not be entitled to terminate this Agreement
     on that date otherwise than pursuant to Section 11.01(a)(ii),  "Termination
     Date" means September 30, 1999.

          "Uniform Provisions" has the meaning Paragraph 4 specifies.

          "USC Award Agreements" means the award agreements, each in the form of
     Exhibit  1-A,  pursuant to which USC, on the  Closing  Date,  will grant to
     certain key  employees of the Company Neil J.  Vannucci has  designated  by
     written  notice  to USC and USC  has  approved  by  written  notice  to the
     Responsible  Officer (which  approval USC will not  unreasonably  withhold)
     prior to the  Closing  Date,  pursuant  to the  U.S.  Concrete,  Inc.  1999
     Employee  Incentive  Plan, or other  similar stock option plan,  options to
     purchase an aggregate not to exceed 115,418 shares of USC Common Stock at a
     per share exercise price equal to the IPO Price.

          "USC Sub Common  Stock"  means the Common  Stock,  par value $1.00 per
     share, of USC Sub.

          "1998 Permitted Restricted Payment" means $0.

     Paragraph 2 (A) CERTIFICATE OF MERGER.  Subject to the terms and conditions
hereof, the Company will cause the Certificate of Merger to be duly executed and
delivered on or promptly  after the Closing Date and filed with the Secretary of
State of the  State of  California  and the  Secretary  of State of the State of
Delaware.

     (B) THE EFFECTIVE  TIME. The effective  time of the Merger (the  "Effective
Time") will be the time on the Effective  Date which the  Certificate  of Merger
specifies or, if the  Certificate of Merger does not specify  another time, 8:00
a.m., Houston, Texas time, on the Effective Date.

                                       -3-
<PAGE>
     (C) CERTAIN EFFECTS OF THE MERGER. At and as of the Effective Time, (1) USC
Sub will be merged with and into the Company in accordance  with the  provisions
of the CGCL and the DGCL,  (2) USC Sub will cease to exist as a  separate  legal
entity,  (3) the  articles of  incorporation  of the Company  will be amended to
change the Company's  authorized  shares of capital  stock to 1,000 shares,  par
value $1.00 per share,  of Common  Stock,  (4) the Company will be the Surviving
Corporation and, as such, will, all with the effect provided by the CGCL and the
DGCL,  (a) possess  all the  properties  and  rights,  and be subject to all the
restrictions  and duties,  of the Company and USC Sub and (b) be governed by the
laws of the State of California,  (5) the Charter  Documents of the Company then
in effect (after  giving  effect to the  amendment to the Company's  articles of
incorporation  specified  in  clause  (3) of  this  sentence)  will  become  and
thereafter  remain (until changed in accordance  with (a) applicable law (in the
case of the  articles of  incorporation)  or (b) their terms (in the case of the
bylaws)) the Charter  Documents of the  Surviving  Corporation,  (6) the initial
board of directors of the  Surviving  Corporation  will be the persons  Schedule
2(C) names as such,  and those  persons  will hold the office of director of the
Surviving  Corporation,  subject to the provisions of the applicable laws of the
State of California and the Charter Documents of the Surviving Corporation,  and
(7) the initial  officers of the Surviving  Corporation will be as Schedule 2(C)
sets forth,  and each of those  persons will serve in each office  Schedule 2(C)
specifies for that person, subject to the provisions of the Charter Documents of
the Surviving  Corporation,  until that  person's  successor is duly elected to,
and, if necessary, qualified for, that office.

     (D) EFFECT OF THE MERGER ON CAPITAL STOCK.  As of the Effective  Time, as a
result of the Merger and without any action on the part of any holder thereof:

          (1) the  shares  of  Company  Capital  Stock  issued  and  outstanding
     immediately  prior to the Effective Time will (a) convert into the right to
     receive,  subject to the provisions of Paragraph 2(E), without interest, on
     surrender of the certificates  evidencing those shares,  the amount of cash
     and the number of whole and fractional  shares of USC Common Stock Schedule
     2(D) sets  forth  and,  if any,  the  Additional  Cash  Consideration  (the
     "Acquisition Consideration"),  (b) cease to be outstanding and to exist and
     (c) be canceled and retired;

          (2) each share of Company  Capital  Stock held in the  treasury of the
     Company or any Company  Subsidiary  will (a) cease to be outstanding and to
     exist and (b) be canceled and retired; and

          (3)  each  share  of USC  Sub  Common  Stock  issued  and  outstanding
     immediately  prior to the  Effective  Time will  convert  into one share of
     Common Stock,  par value $1.00 per share, of the Surviving  Corporation and
     the  shares of Common  Stock of the  Surviving  Corporation  issued on that
     conversion will constitute all the issued and outstanding shares of Capital
     Stock of the Surviving Corporation.

Each  holder of a  certificate  representing  shares of  Company  Capital  Stock
immediately  prior to the  Effective  Time will,  as of the  Effective  Time and
thereafter,  cease to have any rights  respecting  those  shares  other than the
right to receive, subject to the provisions of Paragraph 2(E), without interest,

                                       -4-
<PAGE>
the  Acquisition  Consideration  and the  additional  cash,  if any,  owing with
respect to those shares as provided in Paragraph 2(F).

     (E) DELIVERY, EXCHANGE AND PAYMENT. (1) At or after the Effective Time: (a)
the  Stockholders,  as holders of  certificates  representing  shares of Company
Capital  Stock,  will, on surrender of those  certificates  to USC (or any agent
that USC may appoint for purposes of this Paragraph 2(E)),  receive,  subject to
the  provisions of this  Paragraph  2(E) and  Paragraph  2(F),  the  Acquisition
Consideration;  and (b) until any certificate representing Company Capital Stock
has  been  surrendered  and  replaced  pursuant  to this  Paragraph  2(E),  that
certificate  will,  for all  purposes,  be deemed to evidence  ownership  of the
number  of  whole  shares  of USC  Common  Stock  included  in  the  Acquisition
Consideration payable in respect of that certificate pursuant to Paragraph 2(D).
All shares of USC Common  Stock  issuable  in the Merger  will be deemed for all
purposes to have been issued by USC at the Effective Time.

          (2) Each  Stockholder  will  deliver to USC (or any agent that USC may
     appoint for purposes of this  Paragraph  2(E)) on or before the IPO Closing
     Date the  certificates  representing all the Company Capital Stock owned by
     that Stockholder, duly endorsed in blank, or accompanied by stock powers in
     blank duly executed,  by that Person,  and with all necessary  transfer tax
     and other revenue stamps,  acquired at that Person's  expense,  affixed and
     canceled. Each Stockholder will cure any deficiencies in the endorsement of
     the  certificates  or other documents of conveyance  respecting,  or in the
     stock powers  accompanying,  the certificates  representing Company Capital
     Stock that Person delivers.

          (3) No  dividends  (or  interest) or other  distributions  declared or
     earned  after the  Effective  Time with  respect  to USC  Common  Stock and
     payable to the holders of record  thereof after the Effective  Time will be
     paid to the holder of any unsurrendered certificates representing shares of
     Company  Capital Stock for which whole shares of USC Common Stock have been
     issued in the Merger until those  certificates  are surrendered as provided
     herein,  but (a) on that surrender USC will cause to be paid, to the Person
     in whose  name the  certificates  representing  those  whole  shares of USC
     Common  Stock  will  then be  issued,  the  amount  of  dividends  or other
     distributions  previously  paid with  respect to those whole  shares of USC
     Common Stock with a record date, or which have  accrued,  subsequent to the
     Effective  Time,  but prior to that  surrender,  and the amount of any cash
     payable to that  Person for and in lieu of  fractional  shares  pursuant to
     Paragraph  2(F)  and  (b) at the  appropriate  payment  date  or as soon as
     practicable thereafter, USC will cause to be paid to that Person the amount
     of dividends or other  distributions with a record date, or which have been
     accrued,  subsequent to the Effective Time, but which are not payable until
     a date  subsequent  to  surrender,  which are payable with respect to those
     whole shares of USC Common  Stock,  subject in all cases to any  applicable
     escheat  laws.  No interest  will be payable with respect to the payment of
     those  dividends  or  other  distributions  or  cash  for  and in  lieu  of
     fractional shares on surrender of outstanding certificates.

     (F)  Notwithstanding  any other  provision  herein,  USC will not issue any
fractional  shares of USC Common Stock, and if any Stockholder would be entitled
hereunder to receive a

                                     -5-
<PAGE>
fractional  share  of USC  Common  Stock  but  for  this  Paragraph  2(F),  that
Stockholder will be entitled hereunder to receive a cash payment for and in lieu
thereof in the amount  (rounded  upward to the nearest whole cent) equal to that
Stockholder's  fractional  interest in a share of USC Common Stock multiplied by
the IPO Price.

     Paragraph 3 THE CLOSING.  On or before the Closing Date, the parties hereto
will take all actions  necessary to (A) effect the  Acquisition  (including,  as
permitted by the CGCL and the DGCL, (i) the execution of a Certificate of Merger
(a) meeting the requirements of the CGCL and the DGCL and (b) providing that the
Merger will become effective on the Effective Date and (ii) the transmitting for
filing of that Certificate of Merger with the Secretary of State of the State of
California and the Secretary of State of the State of Delaware),  (B) verify the
existence and ownership of the certificates evidencing the Company Capital Stock
to be exchanged for the Acquisition Consideration pursuant to Paragraph 2(E) and
(C) satisfy the document  delivery  requirements on which the obligations of the
parties to effect the Acquisition and the other transactions contemplated hereby
are  conditioned by the provisions of Article V (all those actions  collectively
being the  "Closing").  The  Closing  will take place at the  offices of Baker &
Botts, L.L.P., 30th Floor, 910 Louisiana,  Houston, Texas at 10:00 a.m., Houston
time,  on the Closing  Date,  or at such later time on the  Closing  Date as USC
specifies by written notice to the Responsible Officer. The actions taken at the
Closing will not include the delivery of the Company Capital Stock to USC or the
payment of the Acquisition  Consideration to the Stockholders.  Instead,  on the
IPO Closing Date, the Company  Capital Stock will be surrendered in exchange for
the  Acquisition  Consideration  (with  the  cash  portion  of  the  Acquisition
Consideration   being  paid  by  wire  transfer  pursuant  to  instructions  the
Stockholders  deliver  to USC  prior to  Closing  or,  in the  absence  of those
instructions,  a USC check), and all transactions contemplated by this Agreement
to be closed or  completed  on or before the IPO Closing Date will be closed and
completed, as the case may be.


     Paragraph 4 INCORPORATION  OF UNIFORM  PROVISIONS.  (A) The U.S.  Concrete,
Inc.  Uniform  Provisions  for the  Acquisition of Founding  Companies  attached
hereto as Annex 1 (the "Uniform  Provisions")  hereby are  incorporated  in this
Agreement by this  reference and  constitute a part of this  Agreement  with the
same force and effect as if set forth at length herein.

          (B) Section  2.23(vi) is hereby  amended by replacing  "$25,000"  with
     "$50,000."

          (C) The  provisions of Article VIII will not prohibit Neil J. Vannucci
     from  developing,  owning and operating a cement and/or  aggregates  import
     terminal in the San Francisco  Bay Area,  provided that (i) USC (or any one
     or more of its  Subsidiaries it designates)  has the  contractual  right to
     purchase at least 90% of the cement and  aggregates  that terminal  imports
     each year at prices equal to or less than then  prevailing  market  prices,
     (ii) USC (or any one or more of its  Subsidiaries  it  designates)  has the
     contractual  right to operate any  ready-mixed  concrete  operation  at the
     terminal location for its own benefit and (iii) USC is granted an option to
     purchase the terminal  facility,  exercisable at any time from the start-up
     of the  terminal's  operations  to the 10th  anniversary  of that date at a
     purchase  price  determined  by an  appraisal  firm  USC  selects  which is
     reasonably acceptable to Mr. Vannucci.

                                       -6-
<PAGE>
          (D) Notwithstanding the provisions of Section 10.07,  Article VIII and
     the  rights and  obligations  thereunder  of the  parties  thereto  will be
     governed by and construed in accordance  with the  substantive  laws of the
     State of  California  without  regard to the  conflicts  of law  provisions
     thereof.

     Paragraph  5  CERTAIN  CONDITIONS  TO  CLOSING  AND  CONSUMMATION.  (A) The
obligations of the  Stockholders  with respect to the actions to be taken on the
IPO Closing Date are subject to the  satisfaction of the following  condition in
addition to those set forth or referred to in Section 5.02(b): (i) the Executive
Employment  Agreement  then will be in full  force and effect and (ii) USC shall
have tendered the USC Award  Agreements to the  respective  recipients  thereof,
duly signed on its behalf by an authorized officer of USC.

          (B) The  obligations of USC and USC Sub with respect to the actions to
     be taken on the IPO  Closing  Date are subject to the  satisfaction  of the
     following  condition  in  addition  to those  set forth or  referred  to in
     Section 5.03(b):  the Executive  Employment  Agreement then will be in full
     force and effect.

     Paragraph  6  COUNTERPARTS.  This  Agreement  may be  executed  in multiple
counterparts,  each of which will be an original, but all of which together will
constitute one and the same agreement.

     Paragraph  7 NOTICES.  For  purposes  of  Section  10.06,  notices  will be
initially addressed to the Stockholders and the Company, as follows:

          (A) if to a Stockholder, addressed to him or her at:

                  Neil J. Vannucci
                  1981 Eucalyptus Ave.
                  San Carlos, California 94070

                        or

                  Gloria Satterfield
                  2811 Crestmoor Dr.
                  San Bruno, California 94066

                        or

                  Nino Campagna
                  934 Larkspur Dr.
                  Millbrae, California 94030

                        or

                                       -7-
<PAGE>
                  William Monlux
                  5128 Brophy Dr.
                  Fremont, California 94536

                      ; and

            (B) if to the Company, addressed to it at:

                     BAY CITIES BUILDING MATERIALS CO., INC.
                  150 So. Linden Avenue
                  So. San Francisco, California 94080
                  Fax No.: (650) 871-5745
                  Attn:   Neil J. Vannucci

      with copies (which will not constitute notice for purposes of this
      Agreement) to:

                  Ferrari, Olsen, Ottoboni & Bebb, LLP
                  333 West Santa Clara Street, Suite 700
                  San Jose, California 95113
                  Fax No.:  (408) 280-0151
                  Attn:  Richard S. Bebb

     Paragraph 8 ABANDONMENT OF MERGER. If this Agreement is terminated pursuant
to Section  11.01,  the  Merger  will be deemed  for all  purposes  to have been
abandoned and of no force or effect and, if the  Certificate  of Merger has been
filed with the Secretary of State of the Company's  Organization  State prior to
that  termination,  each of the Company and USC Sub is authorized to execute and
file  with  the  Secretary  of  State  of the  Company's  Organization  State  a
certificate of that termination pursuant to Section 110 of the CGCL.


                         [Signatures on following page]

                                       -8-
<PAGE>
     IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as of
the date first above written.

                                    U.S. CONCRETE, INC.


                                    By:________________________________________
                                         Eugene P. Martineau
                                         President and Chief Executive Officer

                                    BAY CITIES ACQUISITION INC.


                                    By:________________________________________
                                         Eugene P. Martineau
                                         President

                                    BAY CITIES BUILDING MATERIALS CO., INC.


                                    By:________________________________________
                                         Neil J. Vannucci
                                         President


                                  Stockholders:


                                    --------------------------------------------
                                    Neil J. Vannucci


                                    --------------------------------------------
                                    Gloria Satterfield


                                    --------------------------------------------
                                    Nino Campagna


                                    --------------------------------------------
                                    William Monlux

                                     -9-
<PAGE>
     THE UNDERSIGNED,  being the spouse of Neil J. Vannucci, hereby joins in the
execution  of this  Agreement  to reflect the  undersigned's  understanding  and
agreement  to the terms herein  contained,  and to consent to the Merger and the
conversion of the entire  interest of that  Stockholder in the shares of Company
Capital Stock  (including  any community  interest the  undersigned  may have in
those  shares)  into  that  Stockholder's  Pro  Rata  Share  of the  Acquisition
Consideration on the terms and for the consideration herein expressed.


                                    --------------------------------------------
                                       Margaret Ann Vannucci


     THE UNDERSIGNED, being the spouse of Gloria L. Satterfield, hereby joins in
the execution of this Agreement to reflect the  undersigned's  understanding and
agreement  to the terms herein  contained,  and to consent to the Merger and the
conversion of the entire  interest of that  Stockholder in the shares of Company
Capital Stock  (including  any community  interest the  undersigned  may have in
those  shares)  into  that  Stockholder's  Pro  Rata  Share  of the  Acquisition
Consideration on the terms and for the consideration herein expressed.


                                    --------------------------------------------
                                       Curtis H. Satterfield


     THE  UNDERSIGNED,  being the spouse of Nino  Campagna,  hereby joins in the
execution  of this  Agreement  to reflect the  undersigned's  understanding  and
agreement  to the terms herein  contained,  and to consent to the Merger and the
conversion of the entire  interest of that  Stockholder in the shares of Company
Capital Stock  (including  any community  interest the  undersigned  may have in
those  shares)  into  that  Stockholder's  Pro  Rata  Share  of the  Acquisition
Consideration on the terms and for the consideration herein expressed.


                                    --------------------------------------------
                                       Millie Campagna

                                     -10-
<PAGE>
                                   ADDENDUM 1

                                     to the

                      Agreement and Plan of Reorganization
                                    to which
                               U.S. Concrete, Inc.
                                       and
                     BAY CITIES BUILDING MATERIALS CO., INC
                                   are parties

     A.   Capitalized  terms this Addendum uses,  but does not define,  have the
          meanings the captioned Agreement specifies.

     B.   The Founding Companies are:

          Baer Concrete, Incorporated
          Bay Cities Building Materials Co., Inc.
          Central Concrete Supply Co., Inc.
          Opportunity Concrete Corporation
          R.G. Evans/Associates d/b/a Santa Rosa Cast Products Co.
          Walker's Concrete, Inc.
<PAGE>
                                  SCHEDULE 2(C)

                                     to the

                      Agreement and Plan of Reorganization
                                    to which
                               U.S. Concrete, Inc.
                                       and
                     BAY CITIES BUILDING MATERIALS CO., INC

                                   are parties


     A.  Capitalized  terms this Schedule  uses,  but does not define,  have the
meanings the captioned Agreement specifies.

     B. The directors of the Surviving  Corporation and BCBM  immediately  after
the Effective Time are as follows: Eugene P. Martineau and Michael W. Harlan.

     C. The officers of the Surviving Corporation and BCBM immediately after the
Effective Time are as follows:


President.................................. Neil J. Vannucci
Senior Vice President...................... Eugene P. Martineau
Vice President, Treasurer and Secretary.... Michael W. Harlan


                                 End of Schedule
<PAGE>
                                  SCHEDULE 2(D)

                                     to the

                      Agreement and Plan of Reorganization
                                    to which
                               U.S. Concrete, Inc.
                                       and
                     BAY CITIES BUILDING MATERIALS CO., INC
                                   are parties


     A.  Capitalized  terms this Schedule  uses,  but does not define,  have the
meanings the captioned Agreement specifies.

     B.  Subject to increase by the amount of the Positive  Net  Adjustment,  if
any, and to decrease by the amount of the Negative Net  Adjustment,  if any, the
aggregate Acquisition Consideration will be comprised of (1) $8,602,046 in cash,
(2)  1,871,310   shares  of  USC  Common  Stock  and  (3)  the  Additional  Cash
Consideration.

     C. Each  Stockholder  will be entitled to receive his Pro Rata Share of the
Acquisition  Consideration pursuant to Paragraph 2(D), subject to the provisions
of Paragraphs 2(E) and 2(F).


<PAGE>

                                                                         ANNEX 1



                               U.S. CONCRETE, INC.


                               UNIFORM PROVISIONS

                                       FOR

                      THE ACQUISITION OF FOUNDING COMPANIES

<PAGE>
                                TABLE OF CONTENTS
                                                                            Page

ARTICLE I     REPRESENTATIONS AND WARRANTIES OF EACH
STOCKHOLDER...............1
 Section 1.01 Ownership and Status of Company Capital Stock....................1
 Section 1.02 Power of the Stockholder; Approval of the Acquisition............1
 Section 1.03 No Conflicts or Litigation.......................................2
 Section 1.04 No Brokers.......................................................2
 Section 1.05 Preemptive and Other Rights; Waiver; No Commitments..............2
 Section 1.06 Control of Related Businesses....................................2
 Section 1.07 Accredited Investor Status; Sophistication; Review of Private
               Placement Memorandum............................................3

ARTICLE II    REPRESENTATIONS AND WARRANTIES OF THE COMPANY AND THE
               STOCKHOLDERS....................................................3
 Section 2.01 Organization.....................................................3
 Section 2.02 Qualification....................................................4
 Section 2.03 Authorization; Enforceability; Absence of Conflicts;
               Required Consents...............................................4
 Section 2.04 Charter Documents and Records; No Violation......................5
 Section 2.05 No Defaults......................................................5
 Section 2.06 Company Subsidiaries.............................................5
 Section 2.07 Controlling Affiliates...........................................6
 Section 2.08 Capital Stock of the Company and the Company Subsidiaries........6
 Section 2.09 Transactions in Capital Stock....................................6
 Section 2.10 No Bonus Shares..................................................6
 Section 2.11 Predecessor Status; etc..........................................6
 Section 2.12 Related Party Agreements.........................................6
 Section 2.13 Litigation.......................................................7
 Section 2.14 Financial Statements; Disclosure.................................7
 Section 2.15 Compliance With Laws.............................................8
 Section 2.16 Certain Environmental Matters....................................9
 Section 2.17 Liabilities and Obligations......................................9
 Section 2.18 Receivables.....................................................10
 Section 2.19 Real Properties.................................................10
 Section 2.20 Other Tangible Assets...........................................11
 Section 2.21 Proprietary Rights..............................................11
 Section 2.22 Relations With Governments, etc.................................11
 Section 2.23 Commitments.....................................................12
 Section 2.24 Capital Expenditures............................................13
 Section 2.25 Inventories.....................................................13
 Section 2.26 Insurance.......................................................13
 Section 2.27 Employee Matters................................................14

                                       -i-
<PAGE>
 Section 2.28 Compliance With ERISA...........................................17
 Section 2.29 Taxes...........................................................19
 Section 2.30 Government Contracts............................................20
 Section 2.31 Absence of Changes..............................................20
 Section 2.32 Bank Relations; Powers of Attorney..............................22

ARTICLE III   REPRESENTATIONS AND WARRANTIES OF USC...........................23
 Section 3.01 Organization; Power.............................................23
 Section 3.02 Authorization; Enforceability; Absence of Conflicts;
               Required Consents..............................................23
 Section 3.03 Charter Documents...............................................24
 Section 3.04 Capital Stock of USC and USC Sub................................24
 Section 3.05 Subsidiaries....................................................25
 Section 3.06 Compliance With Laws; No Litigation.............................25
 Section 3.07 Conduct of Operations to Date; Absence of Undisclosed
               Liabilities....................................................25
 Section 3.08 Capitalization of USC...........................................25
 Section 3.09 No Brokers......................................................25
 Section 3.10 Private Placement Memorandum....................................26

ARTICLE IV    COVENANTS EXTENDING TO THE EFFECTIVE TIME.......................26
 Section 4.01 Access and Cooperation; Due Diligence...........................26
 Section 4.02 Conduct of Business Pending the Effective Time..................27
 Section 4.03 Prohibited Activities...........................................28
 Section 4.04 No Shop.........................................................29
 Section 4.05 Notice to Bargaining Agents.....................................30
 Section 4.06 Notification of Certain Matters.................................30
 Section 4.07 Supplemental Information........................................30
 Section 4.08 Cooperation in Connection With the IPO..........................31
 Section 4.09 Additional Financial Statements.................................31
 Section 4.10 Termination of Plans............................................32
 Section 4.11 Disposition of Unwanted Assets..................................32
 Section 4.12 HSR Act Matters.................................................32

ARTICLE V     THE CLOSING AND CONDITIONS TO CLOSING AND
CONSUMMATION..........32
 Section 5.01 Conditions to the Obligations of Each Party.....................32
 Section 5.02 Conditions to the Obligations of the Company and the
               Stockholders.......34
 Section 5.03 Conditions to the Obligations of USC and USC Sub................35

ARTICLE VI    COVENANTS FOLLOWING THE EFFECTIVE TIME..........................36
 Section 6.01 Disclosure......................................................36
 Section 6.02 Preparation and Filing of Tax Returns...........................37
 Section 6.03 Directors.......................................................37
 Section 6.04 Removal of Guaranties...........................................37

                                             -ii-
<PAGE>
        Section 6.05 Survival of Representations and Warranties...............37
        Section 6.06 Limitations on Damage Claims.............................38
        Section 6.07 Working Capital Adjustment...............................39

ARTICLE VII          INDEMNIFICATION..........................................41
        Section 7.01 In Respect of Representations and Warranties.............41
        Section 7.02 Indemnification of USC Indemnified Parties...............41
        Section 7.03 Indemnification of Stockholder Indemnified Parties.......42
        Section 7.04 Conditions of Indemnification............................42
        Section 7.05 Remedies Not Exclusive...................................45
        Section 7.06 Limitations on Indemnification...........................45

ARTICLE VIII         LIMITATIONS ON COMPETITION...............................46
        Section 8.01 Prohibited Activities....................................46
        Section 8.02 Damages..................................................47
        Section 8.03 Reasonable Restraint.....................................47
        Section 8.04 Severability; Reformation................................47
        Section 8.05 Independent Covenant.....................................48
        Section 8.06 Materiality..............................................48

ARTICLE IX           ADDITIONAL DEFINITIONS AND DEFINITIONAL
PROVISIONS.......48
        Section 9.01 Defined Terms............................................48
        Section 9.02 Other Defined Terms......................................63
        Section 9.03 Other Definitional Provisions............................63
        Section 9.04 Captions.................................................63

ARTICLE X            GENERAL PROVISIONS.......................................64
        Section 10.01 Treatment of Confidential Information...................64
        Section 10.02 Brokers and Agents......................................65
        Section 10.03 Assignment; No Third Party Beneficiaries................65
        Section 10.04 Entire Agreement; Amendment; Waivers....................65
        Section 10.05 Expenses................................................66
        Section 10.06 Notices.................................................66
        Section 10.07 Governing Law...........................................67
        Section 10.08 Exercise of Rights and Remedies.........................67
        Section 10.09 Time....................................................67
        Section 10.10 Reformation and Severability............................67
        Section 10.11 Remedies Cumulative.....................................67
        Section 10.12 Release.................................................67
        Section 10.13 Respecting the IPO......................................68
        Section 10.14 Restrictions on Transfer of USC Common Stock............69

                                            -iii-
<PAGE>
ARTICLE XI            TERMINATION.............................................70
        Section 11.01 Termination of This Agreement...........................70
        Section 11.02 Liabilities in the Event of Termination.................71

                                            -iv-
<PAGE>
                                    ARTICLE I

               REPRESENTATIONS AND WARRANTIES OF EACH STOCKHOLDER

     Each of the  Stockholders  represents  and warrants to USC that, as applied
solely to himself,  all the  following  representations  and  warranties in this
Article  I are as of the date of this  Agreement,  and will be,  as  amended  or
supplemented pursuant to Section 4.07, on the Closing Date and immediately prior
to the Effective Time, true and correct:

     Section 1.01 OWNERSHIP AND STATUS OF COMPANY CAPITAL STOCK. The Stockholder
is the record and  beneficial  owner (or, if the  Stockholder  is a trust or the
estate of a deceased natural person, the legal owner) of the number of shares of
Company Capital Stock Schedule 1.01 sets forth opposite the Stockholder's  name,
by each class, and by each series in each class,  thereof, free and clear of all
Liens,  except  for the Liens that  Schedule  sets  forth,  all of which will be
released on or before the Closing Date.

     Section 1.02 POWER OF THE STOCKHOLDER; APPROVAL OF THE

ACQUISITION.  (a) The  Stockholder  has  the  full  power,  legal  capacity  and
authority  to execute  and deliver  this  Agreement  and each other  Transaction
Document to which the  Stockholder  is a party and to perform the  Stockholder's
obligations  in this Agreement and in all other  Transaction  Documents to which
the  Stockholder  is a party.  This Agreement  constitutes,  and each such other
Transaction Document, when executed in the Stockholder's individual capacity and
delivered by the  Stockholder,  will  constitute,  the legal,  valid and binding
obligation of the Stockholder, enforceable against the Stockholder in accordance
with  its  terms,  except  as  that  enforceability  may be (i)  limited  by any
applicable   bankruptcy,   insolvency,   fraudulent  transfer,   reorganization,
moratorium  or similar laws  affecting  the  enforcement  of  creditors'  rights
generally or any applicable law that limits rights to  indemnification  and (ii)
subject  to  general   principles   of  equity   (regardless   of  whether  that
enforceability  is  considered  in a  proceeding  in equity  or at law).  If the
Stockholder is an Entity,  the Stockholder has obtained,  in accordance with all
applicable  Governmental  Requirements and its Charter Documents,  all approvals
and the  taking  of all  actions  necessary  for the  authorization,  execution,
delivery and  performance  by the  Stockholder  of this  Agreement and the other
Transaction Documents to which the Stockholder is a party. If the Stockholder is
acting  otherwise than in his individual  capacity  (whether as an executor or a
guardian or in any other fiduciary or representative  capacity),  all actions on
the  part of the  Stockholder  and  all  other  Persons  (including  any  court)
necessary for the  authorization,  execution,  delivery and  performance  by the
Stockholder of this Agreement and the other  Transaction  Documents to which the
Stockholder is a party have been duly taken.

          (b) The Stockholder,  acting in each capacity in which he is entitled,
     by  reason  of  the  Company's   Charter   Documents  or  the  Governmental
     Requirements of the Company's  Organization  State or for any other reason,
     to vote to approve or disapprove the consummation of the  Acquisition,  has
     voted all the shares of Company  Capital Stock owned by him and entitled to
     a vote  or  votes  on  that  matter,  in any  one or  more  of the  manners
     prescribed or permitted by the

                                       -1-
<PAGE>
Company's  Charter  Documents or the Governmental  Requirements of the Company's
Organization State, whichever are controlling, to approve this Agreement and the
consummation of the Acquisition and the other transactions contemplated hereby.

     Section 1.03 NO  CONFLICTS  OR  LITIGATION.  The  Stockholder's  execution,
delivery and  performance  in  accordance  with their  respective  terms of this
Agreement  and the other  Transaction  Documents to which the  Stockholder  is a
party  do not and  will  not (i)  violate  or  conflict  with  any  Governmental
Requirement,  (ii)  breach or  constitute  a  default  under  any  agreement  or
instrument to which the  Stockholder  is a party or by which the  Stockholder or
any shares of Company Capital Stock the Stockholder owns is bound,  (iii) result
in the creation or imposition of, or afford any Person the right to obtain,  any
Lien upon any shares of Company Capital Stock the Stockholder  owns (or upon any
revenues,  income  or  profits  of the  Stockholder  therefrom)  or  (iv) if the
Stockholder  is an Entity,  violate  the  Stockholder's  Charter  Documents.  No
Litigation  is pending or, to the  knowledge of the  Stockholder,  threatened to
which the  Stockholder  is or may become a party which (i) questions or involves
the validity or enforceability of any of the Stockholder's obligations under any
Transaction  Document or (ii) seeks (or  reasonably may be expected to seek) (A)
to prevent or delay the consummation by the Stockholder of the transactions this
Agreement  contemplates  the  Stockholder  will  consummate  or (B)  damages  in
connection with any such consummation.

     Section  1.04  NO  BROKERS.   Except  as  Schedule  1.04  sets  forth,  the
Stockholder has not,  directly or indirectly,  in connection with this Agreement
or the transactions contemplated hereby (i) employed any broker, finder or agent
or (ii) agreed to pay or incurred any obligation to pay any broker's or finder's
fee, any sales commission or any similar form of compensation.

     Section 1.05 PREEMPTIVE AND OTHER RIGHTS;  WAIVER;  NO COMMITMENTS.  Except
for the right of the  Stockholder  to receive  shares of USC  Common  Stock as a
result of the Acquisition,  the Stockholder either (i) does not own or otherwise
have  any  statutory  or  contractual  preemptive  or  other  right  of any kind
(including any right of first offer or refusal) to acquire any shares of Company
Capital Stock or USC Common Stock or (ii) hereby  irrevocably  waives each right
of that type the Stockholder does own or otherwise has. The Stockholder does not
have any binding  commitment to sell,  exchange or otherwise  dispose of the USC
Common  Stock  the   Stockholder   will  receive  as  part  of  the  Acquisition
Consideration,  and the  representation and warranty in this sentence is for the
benefit of each other Stockholder and each owner of each Other Founding Company.

     Section 1.06 CONTROL OF RELATED  BUSINESSES.  Except as Schedule  1.06 sets
forth,  the  Stockholder is not,  alone or with one or more other  Persons,  the
controlling Affiliate of any Entity,  business or trade (other than the Acquired
Business or any Entity the Acquired Business includes,  if the Stockholder is an
Affiliate of any thereof)  that (i) is engaged in any line of business  which is
the same as or similar to any line of business in which the Acquired Business or
any Entity the Acquired  Business  includes is engaged or (ii) is, or has within
the  three-year  period  ending on the date of this  Agreement,  engaged  in any
transaction  with  any  Entity  the  Acquired  Business  includes,   except  for
transactions in the ordinary course of business of that Entity.

                                       -2-
<PAGE>
     Section 1.07 ACCREDITED INVESTOR STATUS; SOPHISTICATION;  REVIEW OF PRIVATE
PLACEMENT  MEMORANDUM.  The  Stockholder (i) will be acquiring the shares of USC
Common Stock to be issued to him pursuant to Paragraph 2 solely for his account,
for  investment  purposes  only  and  with  no  current  intention  or  plan  to
distribute,  sell or otherwise dispose of any of those shares in connection with
any distribution  and (ii) is not a party to any agreement or other  arrangement
for the  disposition of any shares of USC Common Stock other than this Agreement
and the  Registration  Rights  Agreement.  Schedule  1.07  correctly  states (i)
whether he is, or is not, an "accredited  investor" as defined in Securities Act
Rule 501(a) and, if he is not such an investor, (ii) the name and address of his
"purchaser  representative"  (as defined in  Securities  Act Rule  501(h)).  The
Stockholder  (i) is able to bear the economic  risk of an  investment in the USC
Common Stock acquired  pursuant to this Agreement,  (ii) can afford to sustain a
total  loss of that  investment,  (iii) has such  knowledge  and  experience  in
financial and business  matters that he is capable of evaluating  the merits and
risks of the proposed  investment  in the USC Common  Stock,  (iv) his purchaser
representative,  if  any,  has  received  and  reviewed  a copy  of the  Private
Placement  Memorandum  and had an  adequate  opportunity  to ask  questions  and
receive answers from the officers of USC concerning any and all matters relating
to the transactions  contemplated  hereby and thereby,  including the background
and  experience  of the current and proposed  officers and directors of USC, the
plans for the  business and  operations  of USC, the  business,  operations  and
financial  condition of the Other  Founding  Companies  and any plans of USC for
additional acquisitions,  and (v) or his purchaser  representative,  if any, has
asked all  questions of the nature  described  in preceding  clause (iv) and all
those questions have been answered to his  satisfaction  and the satisfaction of
his purchaser representative, if any.

                                   ARTICLE II

                         REPRESENTATIONS AND WARRANTIES
                                       OF
                        THE COMPANY AND THE STOCKHOLDERS

     The  Company  and each  Stockholder  jointly and  severally  represent  and
warrant  to, and agree  with,  USC that all the  following  representations  and
warranties in this Article II are as of the date of this Agreement, and will be,
as amended or  supplemented  pursuant to Section  4.07,  on the Closing Date and
immediately prior to the Effective Time, true and correct:

     Section 2.01 ORGANIZATION.  Schedule 2.01 sets forth the Organization State
of each of the Company and the Company Subsidiaries. Each of the Company and the
Company  Subsidiaries (i) is a corporation duly organized,  validly existing and
in  good  standing  under  the  laws of its  Organization  State,  (ii)  has all
requisite  corporate  power  and  authority  under  those  laws and its  Charter
Documents  to own or lease and to  operate  its  properties  and to carry on its
business as now conducted and (iii) is duly  qualified and in good standing as a
foreign  corporation in all jurisdictions in which it owns or leases property or
in which the  carrying on of its business as now  conducted so requires,  except
where the failure to be so qualified, singly or in the aggregate, would not have
a Material Adverse Effect.

                                       -3-
<PAGE>
     Section 2.02  QUALIFICATION.  Schedule 2.02 lists all the  jurisdictions in
which  each of the  Company  and  the  Company  Subsidiaries  is  authorized  or
qualified  to own or lease  and to  operate  its  properties  or to carry on its
business as now  conducted,  and neither the Company nor any Company  Subsidiary
owns,  leases or operates any  properties,  or carries on any business,  that is
Material to the Acquired  Business in any  jurisdiction  that  Schedule does not
list.

     Section 2.03 AUTHORIZATION;  ENFORCEABILITY; ABSENCE OF CONFLICTS; REQUIRED
CONSENTS.  (a) The  execution,  delivery and  performance by the Company of this
Agreement and each other  Transaction  Document to which it is a party,  and the
effectuation of the Acquisition and the other transactions  contemplated  hereby
and thereby, are within its corporate or other power under its Charter Documents
and the applicable Governmental  Requirements of its Organization State and have
been duly authorized by all proceedings, including actions permitted to be taken
in  lieu  of  proceedings,  required  under  its  Charter  Documents  and  those
Governmental Requirements.

          (b)  This  Agreement  has  been,  and  each of the  other  Transaction
     Documents to which the Company is a party,  when  executed and delivered by
     the parties  thereto will have been,  duly  executed  and  delivered by the
     Company and is, or when so executed and delivered will be, the legal, valid
     and binding obligation of the Company,  enforceable  against the Company in
     accordance with its terms, except as that enforceability may be (i) limited
     by   any   applicable   bankruptcy,    insolvency,   fraudulent   transfer,
     reorganization,  moratorium or similar laws  affecting the  enforcement  of
     creditors'  rights  generally or any  applicable  law that limits rights to
     indemnification   and  (ii)  subject  to  general   principles   of  equity
     (regardless of whether that enforceability is considered in a proceeding in
     equity or at law).

          (c) The execution,  delivery and  performance in accordance with their
     respective terms by the Company of the Transaction Documents to which it is
     a party have not and will not (i) violate,  breach or  constitute a default
     under (A) the  Charter  Documents  of any of the  Company  and the  Company
     Subsidiaries,  (B) any  Governmental  Requirement  applicable to any of the
     Company and the Company  Subsidiaries or (C) any Material  Agreement of the
     Company  (except  as  Schedule  2.03  sets  forth),   (ii)  result  in  the
     acceleration or mandatory  prepayment of any Indebtedness,  or any Guaranty
     not  constituting  Indebtedness,  of any of the  Company  and  the  Company
     Subsidiaries  or  afford  any  holder of any of that  Indebtedness,  or any
     beneficiary  of any of those  Guaranties,  the right to require  any of the
     Company  and the Company  Subsidiaries  to redeem,  purchase  or  otherwise
     acquire, reacquire or repay any of that Indebtedness,  or to perform any of
     those  Guaranties  (except as  Schedule  2.03 sets  forth),  (iii) cause or
     result in the imposition of, or afford any Person the right to obtain,  any
     Lien upon any  property  or assets of any of the  Company  and the  Company
     Subsidiaries (or upon any revenues, income or profits of any of the Company
     and the Company  Subsidiaries  therefrom)  or (iv) except as Schedule  2.03
     sets forth, result in the revocation, cancellation,  suspension or material
     modification,  in any single case or in the aggregate,  of any Governmental
     Approval  possessed by any of the Company and the Company  Subsidiaries  at
     the date hereof and  necessary  for the ownership or lease or the operation
     of its  properties  or the  carrying on of its  business as now  conducted,
     including  any  necessary   Governmental  Approval  under  each  applicable
     Environmental Law and Industry Law.

                                       -4-
<PAGE>
          (d) Except for (i) the filing of the  Certificates of Merger,  if any,
     with  the  applicable  Governmental  Authorities  ,  (ii)  filings  of  the
     Registration Statement under the Securities Act and the SEC order declaring
     the Registration  Statement effective under the Securities Act and (iii) as
     may be required by the HSR Act or the applicable  state  securities or blue
     sky laws, no  Governmental  Approvals  are required to be obtained,  and no
     reports  or  notices  to or filings  with any  Governmental  Authority  are
     required to be made, by any of the Company and the Company Subsidiaries for
     the execution,  delivery or  performance by the Company of the  Transaction
     Documents to which it is a party,  the  enforcement  against the Company of
     its obligations  thereunder or the  effectuation of the Acquisition and the
     other transactions contemplated thereby.

     Section  2.04  CHARTER  DOCUMENTS  AND  RECORDS;  NO  VIOLATION.  Except as
Schedule  2.04 sets forth,  the Company has caused  true,  complete  and correct
copies of the Charter  Documents,  each as in effect on the date hereof, and the
minute  books and  similar  corporate  or other  Entity  records  of each of the
Company  and the  Company  Subsidiaries  to be  delivered  to USC.  No breach or
violation  of  any  Charter  Document  of any of the  Company  and  the  Company
Subsidiaries has occurred and is continuing.

     Section 2.05 NO DEFAULTS.  Except as Schedule 2.05 sets forth, no condition
or state of facts exists,  or, with the giving of notice or the lapse of time or
both,   would  exist,   which  (i)  entitles  any  holder  of  any   outstanding
Indebtedness,  or any  Guaranty  not  constituting  Indebtedness,  of any of the
Company and the Company  Subsidiaries,  or a representative  of that holder,  to
accelerate the maturity, or require a mandatory prepayment, of that Indebtedness
or Guaranty, or affords that holder or its representative, or any beneficiary of
that  Guaranty,  the  right  to  require  any of the  Company  and  the  Company
Subsidiaries to redeem, purchase or otherwise acquire, reacquire or repay any of
that  Indebtedness,  or to  perform  that  Guaranty  in whole  or in part,  (ii)
entitles  any Person to obtain any Lien  (other  than a  Permitted  Lien) on any
properties or assets constituting any part of the Acquired Business (or upon any
revenues,  income or profits of any of the Company and the Company  Subsidiaries
therefrom) or (iii)  constitutes  a violation or breach of, or a default  under,
any Material  Agreement of the Company  (including this Agreement) by any of the
Company and the Company Subsidiaries.

     Section 2.06 COMPANY SUBSIDIARIES.  Schedule 2.01 either (i) sets forth the
form of organization,  legal name, each assumed name and  Organization  State of
each  Company  Subsidiary  or (ii)  correctly  states  no  Entity  is a  Company
Subsidiary.  Except as Schedule  2.06 sets forth,  each Company  Subsidiary is a
Wholly Owned  Subsidiary.  In the case of any Company  Subsidiary  that is not a
Wholly Owned Subsidiary, Schedule 2.06 sets forth, by each class and each series
within each class,  (i) the number of  outstanding  shares (or other  percentage
ownership  interests)  of  Capital  Stock of the  Company  Subsidiary,  (ii) the
Company's aggregate direct and indirect ownership of those shares (or interests)
and (iii) the name and  address  of record  and  percentage  ownership  of those
shares (or interests) of each holder of record thereof other than the Company or
a  Company  Subsidiary.  No Lien  exists  upon any  outstanding  share (or other
percentage ownership interests) of Capital Stock of any Company Subsidiary which
the  Company  directly  or  indirectly  owns other  than (i) the Liens,  if any,
Schedule  2.06  describes,  all of  which  will be  released  at or  before  the
Effective

                                       -5-
<PAGE>
Time, and (ii) Permitted Liens.  Except as Schedule 2.06 sets forth, the Company
does not own,  of record or  beneficially,  directly or  indirectly  through any
Person,  and does not  control,  directly  or  indirectly  through any Person or
otherwise, any Capital Stock or Derivative Securities of any Entity other than a
Company Subsidiary.

     Section 2.07 CONTROLLING  AFFILIATES.  Schedule 2.07 sets forth the name of
each Person who at the time the Acquisition was submitted for vote or consent to
the  Stockholders,  is, was or will be an  Affiliate of the Company by reason of
that Person's control of the Company.

     Section  2.08  CAPITAL  STOCK OF THE COMPANY AND THE COMPANY  SUBSIDIARIES.
Schedule  2.08 sets forth,  by each class and by each series  within each class,
the total number of shares of  authorized  Company  Capital  Stock and the total
number of such shares that have been issued and are now  outstanding.  Except as
Schedule 2.08 sets forth: (i) no shares of Company Capital Stock are held by the
Company or any Company  Subsidiary as treasury  shares;  and (ii) no outstanding
options,  warrants  or rights to  acquire  Capital  Stock of the  Company or any
Company Subsidiary exist. All the issued and outstanding shares of Capital Stock
of  each  of the  Company  and the  Company  Subsidiaries  (i)  have  been  duly
authorized  and validly issued in accordance  with the  applicable  Governmental
Requirements of their issuer's Organization State and Charter Documents and (ii)
are fully paid and nonassessable. Neither the Company nor any Company Subsidiary
has  issued or sold any  shares of its  outstanding  Capital  Stock in breach or
violation of (i) any applicable  statutory or contractual  preemptive rights, or
any other rights of any kind  (including  any rights of first offer or refusal),
of any Person or (ii) the terms of any of its Derivative  Securities  which then
were  outstanding.  No  Person  has,  otherwise  than  solely  by reason of that
Person's  right,  if any, to vote shares of the Capital  Stock of the Company or
any Company  Subsidiary  it holds (to the extent those shares  afford the holder
thereof  any voting  rights) any right to vote on any matter with the holders of
Capital Stock of the Company or any Company Subsidiary.

     Section 2.09  TRANSACTIONS  IN CAPITAL STOCK.  Except as Schedule 2.09 sets
forth: (i) the Company has no obligation  (contingent or otherwise) to purchase,
redeem or otherwise  acquire or reacquire  any of its equity  securities  or any
interests  therein or to pay any  dividend or make any  distribution  in respect
thereof;  and  (ii)  no  transaction  has  been  effected,   and  no  action  in
contemplation  of the  transactions  described in this Agreement has been taken,
respecting the equity ownership of either the Company or any Company Subsidiary.

     Section  2.10 NO BONUS  SHARES.  Except as  Schedule  2.10 sets  forth,  no
outstanding  share of Capital  Stock of the Company was issued for less than the
fair market value  thereof at the time of issuance or was issued in exchange for
any consideration other than cash.

     Section 2.11 PREDECESSOR  STATUS;  ETC. Except as Schedule 2.11 sets forth,
the Company has not been a Subsidiary  or division of another  Entity during the
past five years.

     Section 2.12 RELATED PARTY AGREEMENTS. Schedule 2.12 sets forth all Related
Party  Agreements  in effect on the date hereof.  Except for those Related Party
Agreements that Schedule

                                       -6-
<PAGE>
specifically  refers to as "Retained  Related Party  Agreements"  (the "Retained
Related Party  Agreements"),  each Related Party Agreement in effect on the date
hereof will have been  terminated,  and all  Indebtedness of each Related Person
and its Affiliates owed to any of the Company and the Company  Subsidiaries will
have  been paid in full,  prior to the  Effective  Time,  and no  Related  Party
Agreement  then will exist.  The terms and  conditions  of each of the  Retained
Related Party  Agreements  are no less favorable to the Company than the Company
reasonably  could have expected to obtain in an arm's-length  transaction with a
Person other than an Affiliate of the Company,  the rentals  provided for in the
Retained  Related  Party  Agreements  constituting  leases  of  property  to the
Acquired Business (other than the leases, if any, that this Agreement defines as
a Facilities Lease Agreement,  as to which no representation is made pursuant to
this  Section  2.12) do not and will  not  exceed  fair  market  rentals  of the
properties  being rented or leased under those Retained Related Party Agreements
and the payments provided to be made by the Company or any Company Subsidiary in
the Retained Related Party Agreements do not exceed the fair market value of the
goods or other property  provided to or the services  performed for the Acquired
Business.

     Section 2.13 LITIGATION.  Except as Schedule 2.13 sets forth, no Litigation
is pending or, to the knowledge of the Company or any Stockholder, threatened to
which the Company or any Company Subsidiary is or may become a party.

     Section 2.14 FINANCIAL  STATEMENTS;  DISCLOSURE.  (a) FINANCIAL STATEMENTS.
(i) The Financial  Statements  (including in each case the related schedules and
notes) delivered to USC present fairly, in all material respects,  the financial
position of the Acquired  Business at the respective dates of the balance sheets
included therein and the results of operations,  cash flows and stockholders' or
other owners'  equity of the Acquired  Business for the  respective  periods set
forth  therein and have been  prepared in  accordance  with GAAP,  except,  with
respect to any financial  statements of the Acquired  Business  delivered to USC
pursuant to the  provisions  of Section  4.09,  for the  provision of applicable
footnotes and  adjustments  customarily  made at year end. As of the date of any
balance sheet included in those  Financial  Statements,  neither the Company nor
any Company  Subsidiary then had any  outstanding  Indebtedness to any Person or
any liabilities of any kind (including contingent  obligations,  tax assessments
or unusual forward or long-term  commitments),  or any unrealized or anticipated
loss,  which in the aggregate  then were  Material to the Acquired  Business and
required to be reflected in those  Financial  Statements or in the notes related
thereto in accordance with GAAP which were not so reflected.

          (ii) Since the Current  Balance  Sheet Date, no change has occurred in
     the  business,  operations,  properties or assets,  liabilities,  condition
     (financial or other) or results of operations of the Acquired Business that
     could reasonably be expected,  either alone or together with all other such
     changes, to have a Material Adverse Effect.

          (b) DISCLOSURE.  (i) As of the date hereof,  all Information  that has
     been made available to USC by or on behalf of the Company prior to the date
     of this Agreement in connection with the transactions  contemplated  hereby
     (other than financial budgets and projections) is, taken together, true and
     correct in all material  respects and does not contain any untrue statement
     of a

                                       -7-
<PAGE>
     material fact or omit to state a material  fact  necessary in order to make
     the statements contained therein not materially  misleading in light of the
     circumstances under which those statements were made.

          (ii) All  Information  that is  furnished to USC after the date hereof
     from  time to time  prior  to the  Effective  Time by or on  behalf  of the
     Company  in  connection  with or  pursuant  to this  Agreement,  any  other
     Transaction  Document or the  transactions  contemplated  hereby or thereby
     (other than financial budgets and projections) will be, when made available
     and taken together,  true and correct in all material respects and will not
     contain any untrue statement of a material fact or omit to state a material
     fact  necessary  in order  to make the  statements  contained  therein  not
     materially  misleading  in light of the  circumstances  under  which  those
     statements are made.

          (iii)  Schedule  2.14  sets  forth a  complete  list of all  financial
     budgets and  projections  respecting the Acquired  Business that, as of the
     date of this Agreement,  the Company,  or any of its  Representatives  have
     made available to USC in connection with this Agreement or the transactions
     contemplated  hereby.  All those financial  budgets and projections and any
     other  financial  budgets or projections  respecting the Acquired  Business
     that the Company or any of its Representatives  hereafter provide to USC in
     writing prior to the Effective Time pursuant to or in connection  with this
     Agreement, any other Transaction Document or the transactions  contemplated
     hereby or thereby  have been and will be prepared  and  furnished to USC in
     good  faith  and were and will be based on facts and  assumptions  that are
     believed by the  management of the Company to be reasonable in light of the
     then current and  foreseeable  business  conditions  of the Company and the
     Company  Subsidiaries and represented and will represent that  management's
     good faith estimate of the consolidated  projected financial performance of
     the Company and the Company Subsidiaries based on the information available
     to the Responsible Officer at the time so furnished.

     Section 2.15  COMPLIANCE WITH LAWS. (a) Except as Schedule 2.15 sets forth:
(i) each of the Company and the Company Subsidiaries possesses,  or, if required
by the applicable Environmental Laws and Industry Laws (including those relating
to hazardous  air  pollutants  or Solid  Wastes,  Hazardous  Wastes or Hazardous
Substances),  one or more of its  employees  as required by those  Environmental
Laws and Industry Laws possesses,  all necessary certifications and licenses and
similar  Governmental  Approvals  required for the conduct of its business;  and
(ii) each of the Company and the  Company  Subsidiaries  and such one or more of
its  employees  are in  compliance  in all material  respects with the terms and
conditions of all  Governmental  Approvals  necessary for the ownership or lease
and the operation of its  properties  (including all the facilities and sites it
owns or holds  under any  lease)  and the  carrying  on of its  business  as now
conducted.  The Company has provided USC with a complete written list of all the
Governmental  Approvals so possessed.  All the Governmental  Approvals so listed
are valid and in full force and effect, and, except as Schedule 2.15 sets forth,
neither  the  Company  nor  any  Company  Subsidiary  has  received,  nor to the
knowledge of any  Stockholder  has any employee of either  received,  any notice
from any  Governmental  Authority of its  intention to cancel,  terminate or not
renew any of those Governmental Approvals.

                                       -8-
<PAGE>
          (b) Except as Schedule  2.15 sets  forth,  each of the Company and the
     Company Subsidiaries: (i) has been and continues to be in compliance in all
     material  respects with all Governmental  Requirements  applicable to it or
     any of its presently or previously owned or operated properties  (including
     all the  facilities  and sites now or previously  owned or held by it under
     any lease), businesses or operations, including all applicable Governmental
     Requirements under ERISA, Environmental Laws and Industry Laws; and (ii)(A)
     neither the Company nor any Company  Subsidiary  has  received,  nor to the
     knowledge  of the Company has any employee of either  received,  any notice
     from any Governmental Authority which asserts, or raises the possibility of
     assertion of, any noncompliance with any of those Governmental Requirements
     and, to the knowledge of each of the Company,  the Company Subsidiaries and
     the  Stockholders,  (B) no  condition  or state of facts exists which would
     provide a valid basis for any such assertion.

     Section 2.16 CERTAIN  ENVIRONMENTAL  MATTERS.  Except as Schedule 2.16 sets
forth: (i) the Company and each Company Subsidiary have complied,  and remain in
compliance,  with the provisions of all Environmental  Laws applicable to any of
them or any of their respective presently owned or operated facilities, sites or
other properties, businesses and operations and which relate to the reporting by
the Company and each Company Subsidiary of all sites presently owned or operated
by any of them where Solid Wastes, Hazardous Wastes or Hazardous Substances have
been  treated,  stored,  disposed of or otherwise  handled;  (ii) no release (as
defined  in those  Environmental  Laws)  at,  from,  in or on any site  owned or
operated by the Company or any Company  Subsidiary  has occurred  which,  if all
relevant facts were known to the relevant Governmental  Authorities,  reasonably
could  be  expected  to  require  remediation  to  avoid  deed  record  notices,
restrictions,  liabilities or other consequences that would not be applicable if
that  release  had not  occurred;  (iii)  neither  the  Company  nor any Company
Subsidiary  (or any agent or contractor of either) has  transported  or arranged
for the  transportation  of any Solid  Wastes,  Hazardous  Wastes  or  Hazardous
Substances to, or disposed or arranged for the  disposition of any Solid Wastes,
Hazardous  Wastes or Hazardous  Substances at, any off-site  location that could
lead to any claim  against the  Company,  any Company  Subsidiary,  the Acquired
Business,  any Other  Founding  Company or any of its  Subsidiaries,  USC or any
Subsidiary of USC, as a  potentially  responsible  party or  otherwise,  for any
clean-up costs,  remedial work, damage to natural resources,  personal injury or
property  damage,  including any claim under  CERCLA;  and (iv) no storage tanks
exist on or under any of the properties  owned or operated by the Company or any
Company  Subsidiary from which any Solid Wastes,  Hazardous  Wastes or Hazardous
Substances have been released into the surrounding environment.  The Company has
provided USC with copies (or, if not available,  accurate written  summaries) of
all environmental  investigations,  studies,  audits, reviews and other analyses
conducted by or on behalf,  or which  otherwise  are in the  possession,  of the
Company  or any  Company  Subsidiary  respecting  any  facility,  site or  other
property the Company or any Company Subsidiary presently owns or operates.

     Section 2.17 LIABILITIES AND OBLIGATIONS.  Schedule 2.17 lists or describes
all present  liabilities,  of every kind,  character and description and whether
accrued,  absolute,  fixed,  contingent or otherwise, of each of the Company and
the Company  Subsidiaries  which (i) exceed or  reasonably  could be expected to
exceed $10,000 and (ii) (A) had been incurred prior to the Current Balance

                                       -9-
<PAGE>
Sheet Date,  but are not  reflected on the Current  Balance  Sheet,  or (B) were
incurred  after the Current  Balance Sheet Date  otherwise  than in the ordinary
course of business,  and consistent with the past practice, of that Entity. That
Schedule  also lists and  describes,  for each of the  Company  and the  Company
Subsidiaries:  (i) each of its outstanding secured and unsecured  Guaranties not
constituting its  Indebtedness  and, for each of those  Guaranties,  whether any
Stockholder or Related Person or Affiliate of any  Stockholder is a Person whose
obligation is covered by that  Guaranty,  and (ii ) for each of the items listed
under clause (i) of this  sentence,  (A) if that item is secured by any property
or asset of the Company or any Company Subsidiary,  the nature of that security,
and (B) if  that  item is  covered  in  whole  or in part by a  Guaranty  of any
Stockholder or any Related Person or Affiliate of any  Stockholder,  the name of
the guarantor.

     Section  2.18  RECEIVABLES.  Except as Schedule  2.18 sets  forth,  all the
accounts and notes or other  advances  receivable of the Company and the Company
Subsidiaries reflected on the Current Balance Sheet were collected, or are valid
and  enforceable  claims arising in the ordinary  course of business and, in the
good faith belief of the  Company's  management,  collectible,  in the aggregate
respective amounts so reflected,  net of the reserves,  if any, reflected in the
Current Balance Sheet.

     Section  2.19 REAL  PROPERTIES.  (a)  Schedule  2.19  lists  and  correctly
describes in all material respects:  (i) all real properties owned by any of the
Company and the Company  Subsidiaries  and,  for each of those  properties,  the
address  thereof,  the type and  approximate  square  footage of each  structure
located  thereon  and the use  thereof in the  business  of the  Company and the
Company  Subsidiaries;  (ii) all real properties of which any of the Company and
the Company  Subsidiaries is the lessee and, for each of those  properties,  the
address  thereof,  the type and  approximate  square  footage of each  structure
located  thereon  the  Company  or a  Company  Subsidiary  is  leasing  and  the
expiration  date of its lease and the use thereof in the business of the Company
and the Company Subsidiaries; and (iii) in the case of each real property listed
as being owned,  whether it was previously  owned,  and in the case of each real
property  listed  as  being  leased,  whether  it is  presently  owned,  by  any
Stockholder or any of his Related Persons or Affiliates  (other than the Company
and  the  Company  Subsidiaries,  any  other  Entity  included  in the  Acquired
Business,  if the Stockholder is an Affiliate of the Company or any other Entity
included in the Acquired Business).

          (b) The  Company  has  provided  USC with true,  complete  and correct
     copies of all title  reports  and  insurance  policies  the  Company or its
     Stockholders  possess relating to any of the real properties  Schedule 2.19
     lists as being owned or leased.  Except as that  Schedule  sets forth,  and
     except for Permitted  Liens,  the Company or a Company  Subsidiary  owns in
     fee,  and has good,  valid and  marketable  title to, free and clear of all
     Liens, each property that Schedule lists as being owned.

          (c) The  Company has  provided  USC with true,  correct  and  complete
     copies of all leases  under  which the Company or a Company  Subsidiary  is
     leasing  each of the  properties  Schedule  2.19 lists as being leased and,
     except as that  Schedule  sets forth,  (i) each of those  leases is, to the
     knowledge of the Company, valid and binding on the lessor party thereto and
     (ii) the lessee

                                      -10-
<PAGE>
     party  thereto has not sublet any of the leased  space to any Person  other
     than the Company,  a Company Subsidiary or any other Entity included in the
     Acquired Business.

          (d)  The  fixed  assets  of  each  of  the  Company  and  the  Company
     Subsidiaries  are  affixed  only  to one or  more  of the  real  properties
     Schedule 2.19 lists and, except as that Schedule sets forth, are maintained
     in  accordance  with  ordinary  industry  practices  and  adequate  for the
     purposes for which they presently are being used or held for use,  ordinary
     wear and tear excepted.

     Section 2.20 OTHER TANGIBLE ASSETS. (a) Schedule 2.20 discloses all leases,
including  capital  leases,  that are  Material to the  Company  under which the
Company or a Company Subsidiary is leasing its property, plant and equipment and
other tangible assets other than real  properties.  Except as that Schedule sets
forth,  (i) each of those leases is, to the knowledge of the Company,  valid and
binding on the lessor party  thereto and (ii) the lessee  party  thereto has not
sublet  any of the leased  property  to any Person  other  than the  Company,  a
Company Subsidiary or any other Entity included in the Acquired Business.

          (b) Except as Schedule 2.20 sets forth,  all the  property,  plant and
     equipment of the Company and the Company  Subsidiaries  are in satisfactory
     condition and in a commercially  satisfactory state of repair given the use
     to which they are put,  ordinary wear and tear  excepted,  and adequate for
     the purposes for which they presently are being used or held for use.

          (c) In each case,  free and clear of all Liens  except  for  Permitted
     Liens and as Schedule 2.20 sets forth,  the Acquired  Business has good and
     valid  title to, or holds  under a lease  valid and  binding  on the lessor
     party  thereto,  all its  tangible  personal  properties  and  assets  that
     individually or in the aggregate are Material to the Acquired Business.

     Section 2.21 PROPRIETARY  RIGHTS.  Except as Schedule 2.21 sets forth, each
of the Company and the Company  Subsidiaries  owns,  free and clear of all Liens
other than  Permitted  Liens,  or has the legal  right to use,  all  Proprietary
Rights that are  necessary to the conduct of its business as now  conducted,  in
each  case free of any  claims  or  infringements  known to the  Company  or any
Stockholder. Schedule 2.21 (i) lists those Proprietary Rights and (ii) indicates
those owned by the Company or any Company  Subsidiary  and, for those not listed
as so owned,  the  agreement  or other  arrangement  pursuant  to which they are
possessed. Except as that Schedule sets forth, (i) no consent of any Person will
be  required  for  the  use of any of  these  Proprietary  Rights  by USC or any
Subsidiary  of USC  following  the  Effective  Time  and  (ii)  no  governmental
registration  of any of these  Proprietary  Rights has lapsed or expired or been
canceled, abandoned, opposed or the subject of any reexamination request.

     Section 2.22 RELATIONS WITH  GOVERNMENTS,  ETC. Neither the Company nor any
Company Subsidiary has made, offered or agreed to offer anything of value to any
governmental official,  political party or candidate for government office which
would cause the  Company or any Company  Subsidiary  to be in  violation  of the
Foreign  Corrupt  Practices  Act of 1977 or any  Governmental  Requirement  to a
similar effect.

                                      -11-
<PAGE>
     Section 2.23  COMMITMENTS.  (a) Schedule 2.23 sets forth a complete list of
each of the following (each a "Company  Commitment") to which any of the Company
and the Company  Subsidiaries  is a party or by which any of its  properties  is
bound and which presently remains executory in whole or in any part:

          (i)  each partnership, joint venture or cost sharing agreement;

          (ii) each  guaranty or  suretyship,  indemnification  or  contribution
               agreement or performance bond;

          (iii)each  instrument,  agreement or other  obligation  evidencing  or
               relating  to  Indebtedness  of any of the Company and the Company
               Subsidiaries involving more than $10,000;

          (iv) each contract to purchase or sell real property;

          (v)  each agreement with sales or commission agents,  public relations
               or advertising agencies,  accountants or attorneys (other than in
               connection with this Agreement and the transactions  contemplated
               hereby)  involving  total payments  within any 12-month period in
               excess of $10,000 and which is not terminable without penalty and
               on no more than 30 days' prior notice;

          (vi) each  agreement  for the  acquisition  or  provision of services,
               supplies,  equipment,   inventory,  fixtures  or  other  property
               involving more than $25,000 in the aggregate;

          (vii)each Related Party Agreement  involving total payments within any
               12-month  period in excess of $10,000 and which is not terminable
               without penalty on no more than 30 days' prior notice;

          (viii) each contract containing any noncompetition agreement, covenant
               or undertaking;

          (ix) each agreement  providing for the purchase from a supplier of all
               or  substantially  all the  requirements  of the  Company  or any
               Company Subsidiary of a particular product or service; or

          (x)  each  other  agreement  or  commitment  not made in the  ordinary
               course of business which is Material to the Acquired Business.

True, correct and complete copies of all written Company Commitments,  and true,
correct and complete written descriptions of all oral Company Commitments,  have
heretofore  been delivered to USC Except as Schedule 2.23 sets forth:  (i) there
are no existing or asserted defaults, events of

                                      -12-
<PAGE>
default or  events,  occurrences,  acts or  omissions  that,  with the giving of
notice or lapse of time or both, would constitute  defaults or events of default
under any Company  Commitment  Material to the  Acquired  Business by any of the
Company and the Company  Subsidiaries  or, to the knowledge of the Company,  any
other  party  thereto;  and  (ii)  no  penalties  have  been  incurred,  nor are
amendments  pending,  with  respect to the Company  Commitments  Material to the
Acquired Business.  The Company Commitments are in full force and effect and are
valid and  enforceable  obligations  of the Company or the Company  Subsidiaries
parties thereto and, to the knowledge of the Company,  the other parties thereto
in accordance with their respective terms,  except as that enforceability may be
(i) limited by any applicable bankruptcy, insolvency, reorganization, moratorium
or similar laws  affecting the  enforcement of creditors'  rights  generally and
(ii)  subject to  general  principles  of equity  (regardless  of  whether  that
enforceability  is  considered  in a  proceeding  in equity  or at law),  and no
defenses,  off-sets or counterclaims  have been asserted or, to the knowledge of
the Company,  may be made by any party  thereto  (other than by the Company or a
Company  Subsidiary),  nor has the Company or a Company Subsidiary,  as the case
may be, waived any rights thereunder, except as Schedule 2.23 sets forth.

          (b) Except as Schedule 2.23 sets forth or as contemplated hereby or by
     any  other  Transaction  Document  to  which  the  Company  or any  Company
     Subsidiary or Stockholder  is a party,  neither the Company nor any Company
     Subsidiary  or  Stockholder  has  knowledge of any plan or intention of any
     other party to any  Company  Commitment  that is  Material to the  Acquired
     Business  to  exercise  any  right to  cancel  or  terminate  that  Company
     Commitment,  and neither the Company  nor that  Company  Subsidiary  or any
     Stockholder  has  knowledge of any  condition or state of facts which would
     justify the exercise of such a right.

     Section  2.24  CAPITAL  EXPENDITURES.  Schedule  2.24 sets  forth the total
amount of capital expenditures currently budgeted to be incurred by the Acquired
Business  in excess of  $25,000  in the  aggregate  during  the  balance  of the
Company's current fiscal year.

     Section  2.25  INVENTORIES.  Except as Schedule  2.25 sets  forth:  (i) all
inventories, net of reserves determined in accordance with GAAP, of the Acquired
Business which are  classified as such on the Current  Balance Sheet are, to the
knowledge  of the  Company,  merchantable  and salable or usable in the ordinary
course of business of the Acquired Business; and (ii) the Acquired Business does
not depend on any single vendor for its inventories the loss of which could have
a  Material  Adverse  Effect or  during  the past five  years  has  sustained  a
difficulty Material to the Acquired Business in obtaining its inventories.

     Section 2.26 INSURANCE. Except as Schedule 2.26 sets forth: (i) the Company
has provided USC with:  (A) a list as of the Current  Balance  Sheet Date of all
insurance  policies  then  carried  by  each  of the  Company  and  the  Company
Subsidiaries;  (B) a list of all insurance  loss runs and worker's  compensation
claims  received for the most recently  ended three policy years;  and (C) true,
complete and correct  copies of all  insurance  policies  carried by each of the
Company and the Company  Subsidiaries which are in effect, all of which (1) have
been issued by insurers of recognized  responsibility and (2) currently are, and
will remain without interruption through the

                                      -13-
<PAGE>
Closing Date, in full force and effect; (ii) no insurance carried by the Company
or any Company  Subsidiary has been canceled by the insurer during the past five
years,  and neither the Company nor any Company  Subsidiary has ever been denied
coverage;   and  (iii)  neither  the  Company  nor  any  Company  Subsidiary  or
Stockholder  has received any notice or other  communication  from any issuer of
any such insurance policy of any material increase in any deductibles,  retained
amounts or the premiums payable thereunder, and, to the knowledge of the Company
or any Stockholder,  no such increase in deductibles,  retainages or premiums is
threatened.

     Section  2.27  EMPLOYEE  MATTERS.  (a) CASH  COMPENSATION.  The Company has
provided  USC with a complete  written  list of the  names,  titles and rates of
annual Cash  Compensation,  at the Current  Balance Sheet Date (and the portions
thereof attributable to salary or the equivalent,  fixed bonuses,  discretionary
bonuses  and  other  Cash  Compensation,  respectively)  of  the  key  employees
(including all employees who are officers or directors),  nonemployee  officers,
nonemployee directors and key consultants and independent contractors of each of
the Company and the Company Subsidiaries.

          (b)  EMPLOYMENT   AGREEMENTS.   Schedule  2.27  lists  all  Employment
     Agreements  remaining executory in whole or in part on the date hereof, and
     the Company has provided USC with true,  complete and correct copies of all
     those Employment Agreements. Neither the Company nor any Company Subsidiary
     is a party to any oral  Employment  Agreement,  other than with  respect to
     employment at-will arrangements that are terminable by either party thereto
     without  liability on the part of either party  thereto  (except for earned
     but unpaid salaries or wages).

          (c)  OTHER   COMPENSATION   PLANS.   Schedule  2.27  lists  all  Other
     Compensation  Plans  either  remaining  executory  at the date hereof or to
     become effective after the date hereof. The Company has provided USC with a
     true,  correct and complete copy of each of those Other  Compensation Plans
     that is in writing and an  accurate  written  description  of each of those
     Other Compensation Plans that is not written.  Except as Schedule 2.27 sets
     forth,  each of the  Other  Compensation  Plans,  including  each that is a
     Welfare Plan, may be  unilaterally  amended or terminated by the Company or
     any  Company  Subsidiary  without  liability  to any of them,  except as to
     benefits accrued thereunder prior to that amendment or termination.

          (d) ERISA  BENEFIT  PLANS.  Schedule  2.27 (i)  lists  (A) each  ERISA
     Pension  Benefit Plan (1) the funding  requirements of which (under Section
     301 of ERISA or  Section  412 of the Code) are,  or at any time  during the
     six-year  period ending on the date hereof were,  in whole or in part,  the
     responsibility  of the Company or any Company  Subsidiary or (2) respecting
     which the Company or any Company  Subsidiary is, or at any time during that
     period  was,  a  "contributing  sponsor"  or an  "employer"  as  defined in
     Sections 4001(a)(13) and 3(5), respectively,  of ERISA (each plan described
     in this clause (A) being a "Company  ERISA Pension  Plan"),  (B) each other
     ERISA Pension  Benefit Plan  respecting  which an ERISA Affiliate is, or at
     any  time  during  that  period  was,  such  a  "contributing  sponsor"  or
     "employer"  (each  plan  described  in this  clause  (B)  being  an  "ERISA
     Affiliate  Pension  Plan") and (C) each other ERISA  Employee  Benefit Plan
     that is being, or at any time during that period was, sponsored, maintained
     or contributed to by the Company or

                                      -14-
<PAGE>
     any Company  Subsidiary  (each plan  described  in this clause (C) and each
     Company ERISA  Pension Plan being a "Company  ERISA  Benefit  Plan"),  (ii)
     states the  termination  date of each Company  ERISA Benefit Plan and ERISA
     Affiliate  Pension Plan that has been  terminated and (iii)  identifies for
     each ERISA  Affiliate  Pension  Plan the  relevant  ERISA  Affiliates.  The
     Company has provided USC with true, complete and correct copies of (i) each
     Company ERISA  Benefit Plan and ERISA  Affiliate  Pension  Plan,  (ii) each
     trust agreement  related thereto (if any) and (iii) all amendments to those
     plans and trust agreements. Except as Schedule 2.27 sets forth, (i) neither
     the  Company  nor any  Company  Subsidiary  is, or at any time  during  the
     six-year  period  ended on the date hereof was, a member of any ERISA Group
     that  currently  includes,  or  included  when  the  Company  or a  Company
     Subsidiary  was a member,  among its  members  any  Person  other  than the
     Company  and the  Company  Subsidiaries  and  (ii) no  Person  is an  ERISA
     Affiliate of the Company or any Company  Subsidiary (other than the Company
     or any Company  Subsidiary in the case of any other  Company  Subsidiary or
     any Company  Subsidiary in the case of the Company,  if the Company and the
     Company Subsidiaries comprise an ERISA Group).

          (e) EMPLOYEE POLICIES AND PROCEDURES. Schedule 2.27 lists all Employee
     Policies  and  Procedures.  The Company has provided USC with a copy of all
     written Employee  Policies and Procedures and a written  description of all
     unwritten  Employee  Policies  and  Procedures  that in the  aggregate  are
     Material to the Company.

          (f)  UNWRITTEN  AMENDMENTS.  Except as Schedule  2.27 sets  forth,  no
     unwritten amendments have been made, whether by oral communication, pattern
     of conduct or otherwise,  with respect to any of the Employment Agreements,
     Other  Compensation  Plans or Employee Policies and Procedures which in the
     aggregate are Material to the Company.

          (g) LABOR COMPLIANCE.  Except as Schedule 2.27 sets forth, each of the
     Company and the Company  Subsidiaries  has been and is in compliance in all
     material respects with all applicable Governmental  Requirements respecting
     employment  and employment  practices,  terms and conditions of employment,
     wages  and  hours and  workplace  health  and  safety  in  concrete  mixing
     facilities  and other work  areas,  and neither the Company nor any Company
     Subsidiary  is liable for any arrears of wages or penalties  for failure to
     comply  with any of the  foregoing.  Neither  the  Company  nor any Company
     Subsidiary has engaged in any unfair labor practice or discriminated on the
     basis of race, color,  religion,  sex, national origin,  age, disability or
     handicap in its employment conditions or practices. Except as Schedule 2.27
     sets forth, there are no (i) unfair labor practice charges or complaints or
     racial, color, religious, sex, national origin, age, disability or handicap
     discrimination  charges or  complaints  pending or, to the knowledge of the
     Company,  threatened against the Company or any of the Company Subsidiaries
     before any  Governmental  Authority  (nor, to the knowledge of the Company,
     does any valid basis therefor  exist) or (ii) existing or, to the knowledge
     of  the  Company,   threatened  labor  strikes,  disputes,   grievances  or
     controversies  affecting  the  Company or any of the  Company  Subsidiaries
     (nor,  to the  knowledge  of the  Company,  does any valid  basis  therefor
     exist). Each of the Company and the Company Subsidiaries has complied,  and
     remains in compliance in all material  respects with, all federal and state
     Governmental

                                      -15-
<PAGE>
     Requirements   mandating   the  provision  of  programs   offering   hazard
     recognition training to its employees and employees of its customers.

          (h)  UNIONS.  Except as  Schedule  2.27 sets  forth,  (i)  neither the
     Company nor any Company Subsidiary or ERISA Affiliate has ever been a party
     to  any  agreement  with  any  union,   labor  organization  or  collective
     bargaining  unit,  (ii)  no  employees  of  the  Company  and  the  Company
     Subsidiaries are represented by any union, labor organization or collective
     bargaining  unit and (iii) to the  knowledge  of the  Company,  none of the
     employees of the Company and the Company  Subsidiaries  has  threatened  to
     organize or join a union, labor organization or collective  bargaining unit
     with respect to their employment by the Company or any Company Subsidiary.

          (i) ALIENS.  Except as Schedule 2.27 sets forth, all employees of each
     of the Company and the Company  Subsidiaries  are, to the  knowledge of the
     Company (including any constructive knowledge the IRCA may deem the Company
     to have),  (i)  citizens of the United  States or (ii) not  citizens of the
     United  States,  but,  in  accordance  with the IRCA and  other  applicable
     federal Governmental Requirements,  are either (A) immigrants authorized to
     work in the United  States or (B)  nonimmigrants  authorized to work in the
     United  States for the Company or a Company  Subsidiary  in their  specific
     jobs.  Except as  Schedule  2.27 sets  forth:  neither  the Company nor any
     Company  Subsidiary  has since  November 6, 1986 (i) hired (or by reason of
     any contract,  subcontract  or exchange is  considered  for purposes of the
     IRCA to have  hired)  an alien in the  United  States to  perform  labor or
     services with  knowledge (as  determined in accordance  with the IRCA) that
     the alien is an unauthorized alien with respect to performing that labor or
     those  services,  (ii) continued the employment of any employee hired after
     November 6, 1986 with knowledge (as determined in accordance with the IRCA)
     that the  employee is or has become an  unauthorized  alien with respect to
     that  employment  or (iii)  directly or indirectly in violation of the IRCA
     required any  individual it has hired to post a bond or security or provide
     any other financial  assurance to it against any potential  liability under
     the IRCA as a result of that hire.  The  Company  has  provided  USC with a
     true,  complete list of all current alien  employees of the Company who (i)
     are  authorized  to work in the United  States as  immigrants  or (ii) hold
     H-1B, H-2B or other  nonimmigrant  visas. The Company has provided USC with
     respect to each current  employee of the Company or any Company  Subsidiary
     who has an H-1B or H-2B visa,  true,  complete  copies of the Department of
     Labor File and Public Access File the Company or a Company  Subsidiary  has
     maintained with respect to that employee. The Company also has provided USC
     with true,  complete  copies of all Forms I-9 the  Company  and the Company
     Subsidiaries  possess  with  respect to their (i) current  employees,  (ii)
     former  employees whose  employment was terminated  within 12 months of the
     date hereof and who were  employed for more than 36 months and (iii) former
     employees  whose  employment  was  terminated  within 36 months of the date
     hereof and who were employed for less than 36 months.  The Company also has
     provided  USC with a list of all people  employed by the Company or Company
     Subsidiaries within the last 36 months and their hire dates and termination
     dates (if any). Except as Schedule 2.27 sets forth, each of the Company and
     the Company  Subsidiaries has obtained,  completed and maintained Form I-9s
     in  accordance  with,  and has otherwise  complied with the  record-keeping
     requirements of, the IRCA.

                                      -16-
<PAGE>
          (j) CHANGE OF CONTROL  BENEFITS.  Except as Schedule  2.27 sets forth,
     neither the Company nor any of the Company  Subsidiaries  is a party to any
     agreement,  or has  established  any plan,  policy,  practice  or  program,
     requiring it to make a payment or provide any other form of compensation or
     benefit or vesting rights to any person performing services for the Company
     or any of the Company  Subsidiaries  which would not be payable or provided
     in the absence of this Agreement or the  consummation  of the  transactions
     this Agreement contemplates,  including any parachute payment under Section
     280G of the Code.

          (k) RETIREES.  Except as Schedule 2.27 sets forth, neither the Company
     nor any of the Company  Subsidiaries  has any  obligation  or commitment to
     provide medical,  dental or life insurance  benefits to or on behalf of any
     of its  employees  who may retire or any of its former  employees  who have
     retired except as the continuation of coverage  provisions of Section 4980B
     of the Code and the applicable parallel provisions of ERISA may require.

     Section 2.28  COMPLIANCE WITH ERISA.  (a)  COMPLIANCE.  Each of the Company
ERISA  Benefit  Plans and Other  Compensation  Plans (each,  a "Plan") (i) is in
substantial  compliance with all applicable provisions of ERISA, as well as with
all other applicable Governmental Requirements,  and (ii) has been administered,
operated and managed in accordance with its governing documents.

          (b)  QUALIFICATION.  All Plans  that are  intended  to  qualify  under
     Section  401(a) of the Code (the  "Qualified  Plans") are so qualified  and
     have been  determined  by the IRS to be so qualified  (or  application  for
     determination  letters have been timely  submitted to the IRS). The Company
     has provided USC with true, complete and correct copies of the current plan
     determination  letters,  most recent actuarial  valuation reports,  if any,
     most recent Form 5500, or, as applicable, Form 5500-C/R, filed with respect
     to each such Qualified Plan and most recent trustee or custodian report. To
     the extent that any  Qualified  Plans have not been  amended to comply with
     applicable  Governmental   Requirements,   the  remedial  amendment  period
     permitting  retroactive  amendment of these Qualified Plans has not expired
     and will not expire within 120 days after the Effective  Time.  All reports
     and other documents  required to be filed with any  governmental  agency or
     distributed  to  plan  participants  or  beneficiaries   (including  annual
     reports, summary annual reports, actuarial reports, PBGC-1 Forms, audits or
     Returns) have been timely filed or distributed,  except for any failures to
     timely file or  distribute  such reports and other  documents as would not,
     singly or in the aggregate, result in a material liability for any Tax.

          (c) NO PROHIBITED TRANSACTIONS.  None of the Stockholders, any Plan or
     the  Company  or any  Company  Subsidiary  has  engaged  in any  Prohibited
     Transaction.  No Plan has incurred an accumulated  funding  deficiency,  as
     defined in Section 412(a) of the Code and Section  302(a) of ERISA,  and no
     circumstances  exist  as a result  of  which  the  Company  or any  Company
     Subsidiary could have any direct or indirect material liability  whatsoever
     (including  being  subject to any statutory  Lien to secure  payment of any
     such liability),  to the PBGC under Title IV of ERISA or to the IRS for any
     excise tax or penalty with respect to any Plan now or hereafter  maintained
     or contributed to by the Company or any of its ERISA Affiliates. Further:

                                      -17-
<PAGE>
               (i) there  have been no  terminations,  partial  terminations  or
          discontinuances  of  contributions  to any  Qualified  Plan  without a
          determination  by the IRS that such action does not  adversely  affect
          the tax-qualified status of that plan;

               (ii) no Termination Event has occurred;

               (iii)no  Reportable  Event has occurred  with respect to any Plan
          which was not properly reported;

               (iv) the  valuation of assets of any  Qualified  Plan,  as of the
          Effective  Time,  will equal or exceed the actuarial  present value of
          all "benefit  liabilities"  (within the meaning of Section 4001(a)(16)
          of ERISA)  under  that plan in  accordance  with the  assumptions  the
          regulations  of the PBGC  governing the funding of terminated  defined
          benefit plans contain;

               (v) with  respect to Plans  qualifying  as "group  health  plans"
          under  Section  4980B of the Code or  Section  607(l)  or 609 of ERISA
          (relating  to the benefit  continuation  rights  imposed by "COBRA" or
          qualified  medical child support  orders),  the Company,  each Company
          Subsidiary  and each  Stockholder  have complied (and at the Effective
          Time will have complied) in all material  respects with all reporting,
          disclosure,  notice,  election  and  other  benefit  continuation  and
          coverage  requirements  imposed  thereunder as and when  applicable to
          those plans,  and neither the Company nor any Company  Subsidiary  has
          incurred  (or will incur) any direct or indirect  liability  or is (or
          will be) subject to any loss, assessment,  excise tax penalty, loss of
          federal income tax deduction or other sanction,  arising on account of
          or in respect of any direct or indirect  failure by the  Company,  any
          Company  Subsidiary  or any  Stockholder,  at any  time  prior  to the
          Effective  Time,  to comply  with any such  federal  or state  benefit
          continuation  or  coverage  requirement,  which  is  capable  of being
          assessed or asserted  before or after the  Effective  Time directly or
          indirectly   against  the  Company,   any  Company   Subsidiary,   any
          Stockholder, USC or any Subsidiary of USC with respect to any of those
          group health plans;

               (vi) the  Financial  Statements  as of the Current  Balance Sheet
          Date reflect the approximate total pension,  medical and other benefit
          liability  for  all  Plans,   and  no  material   funding  changes  or
          irregularities are reflected therein which would cause those Financial
          Statements to be not representative of prior periods; and

               (vii)neither the Company nor any Company  Subsidiary has incurred
          liability under Section 4062 of ERISA.

          (d) MULTIEMPLOYER  PLANS. Except as Schedule 2.28 sets forth,  neither
     the Company nor any Company  Subsidiary,  and no ERISA  Affiliate of any of
     them,  is, or at any time  during  the  six-year  period  ended on the date
     hereof was,  obligated to contribute to a Multiemployer  Plan.  Neither the
     Company nor any Company Subsidiary,  and no ERISA Affiliate of any of them,
     has made a complete or partial  withdrawal from a Multiemployer  Plan so as
     to incur withdrawal

                                      -18-
<PAGE>
     liability  as defined in Section  4201 of ERISA.  Schedule  2.28 states for
     each Multiemployer Plan it lists or should list the Company's best estimate
     of the amount of withdrawal liability that would be incurred if the Company
     and each of the its ERISA  Affiliates  were to make a  complete  withdrawal
     from  that  Multiemployer  Plan  as of the  Closing  Date.  Except  as that
     Schedule sets forth, the aggregate  amount of that withdrawal  liability if
     the  Company  and  each of its  ERISA  Affiliates  were to make a  complete
     withdrawal from each such Multiemployer Plan would not exceed $25,000.

          (e) CLAIMS AND  LITIGATION.  Except as Schedule  2.28 sets  forth,  no
     Litigation or claims  (other than routine  claims for benefits) are pending
     or, to the knowledge of the Company,  threatened  against,  or with respect
     to,  any of the  Plans or with  respect  to any  fiduciary,  administrator,
     party-in-interest or sponsor thereof (in their capacities as such).

          (f)  EXCISE  TAXES,  DAMAGES  AND  PENALTIES.   No  act,  omission  or
     transaction  has  occurred  which  would  result in the  imposition  on the
     Company  or any  Company  Subsidiary  with  respect  to any  Plan  of (i) a
     material  breach of fiduciary duty  liability  damages under Section 409 of
     ERISA,  (ii) a material civil penalty assessed  pursuant to subsection (c),
     (i) or (l) of Section 502 of ERISA or (iii) any  material  excise tax under
     applicable provisions of the Code.

          (g) WELFARE TRUSTS.  Any trust funding a Plan, which is intended to be
     exempt from federal income  taxation  pursuant to Section  501(c)(9) of the
     Code,  satisfies  the  requirements  of that  Section  and has  received  a
     favorable  determination  letter from the IRS regarding  that exempt status
     and has not,  since  receipt  of the most  recent  favorable  determination
     letter,  been amended or operated in a way that would adversely affect that
     exempt status.

     Section  2.29  TAXES.  (a)  Each  of  the  following   representations  and
warranties  in this Section 2.29 is qualified to the extent  Schedule  2.29 sets
forth.

          (b) All Returns required to be filed with respect to any Tax for which
     any of the Company and the  Company  Subsidiaries  is liable have been duly
     and timely filed with the appropriate Taxing Authority, each such Return is
     true,  correct  and  complete  in all  respects  Material  to the  Acquired
     Business (and, in the case of a Return filed by a Company  Subsidiary,  the
     Company  Subsidiary),  each Tax shown to be payable on each such Return has
     been paid,  each Tax  payable by the  Company  or a Company  Subsidiary  by
     assessment  has  been  timely  paid in the  amount  assessed  and  adequate
     reserves have been  established on the  consolidated  books of the Acquired
     Business  for all  Taxes  for  which  any of the  Company  and the  Company
     Subsidiaries  is liable,  but the payment of which is not yet due.  Neither
     the Company nor any Company Subsidiary is, or ever has been, liable for any
     Tax payable by reason of the income or property of a Person  other than the
     Company  or a  Company  Subsidiary.  Each of the  Company  and the  Company
     Subsidiaries  has timely filed true,  correct and complete  declarations of
     estimated  Tax in each  jurisdiction  in  which  any  such  declaration  is
     required to be filed by it. No Liens for Taxes exist upon the assets of the
     Company or any Company  Subsidiary except Liens for Taxes which are not yet
     due.  Neither the Company nor any Company  Subsidiary is, or ever has been,
     subject to Tax in any jurisdiction outside of the United

                                      -19-
<PAGE>
     States.  No Litigation with respect to any Tax for which the Company or any
     Company Subsidiary is asserted to be liable is pending or, to the knowledge
     of the  Company  or any  Stockholder,  threatened  and no basis  which  the
     Company or any  Stockholder  believes to be valid exists on which any claim
     for any  such  Tax can be  asserted  against  the  Company  or any  Company
     Subsidiary.  No requests  for rulings or  determinations  in respect of any
     Taxes are pending  between the  Company or any Company  Subsidiary  and any
     Taxing  Authority.  No extension of any period  during which any Tax may be
     assessed or collected  and for which the Company or any Company  Subsidiary
     is or may be liable has been granted to any Taxing  Authority.  Neither the
     Company  nor any  Company  Subsidiary  is or has  been a  party  to any tax
     allocation or sharing agreement. All amounts required to be withheld by any
     of the  Company  and the  Company  Subsidiaries  and  paid to  governmental
     agencies  for  income,  social  security,  unemployment  insurance,  sales,
     excise, use and other Taxes have been collected or withheld and paid to the
     proper Taxing Authority.  The Company and each Company Subsidiary have made
     all  deposits  required  by law  to be  made  with  respect  to  employees'
     withholding and other employment taxes.

          (c) None of the Company,  any Company Subsidiary or any Stockholder is
     a "foreign person," as Section 1445(f)(3) of the Code refers to that term.

          (d) The Company has not filed a consent  pursuant to Section 341(f) of
     the Code or any  comparable  provision of any other tax statute and has not
     agreed  to  the  application  of  Section  341(f)(2)  of  the  Code  or any
     comparable  provision  of any other tax  statute to any  disposition  of an
     asset.  The Company  has not made,  is not  obligated  to make and is not a
     party to any  agreement  that could  require it to make any payment that is
     not  deductible  under  Section 280G of the Code.  No asset of the Acquired
     Business is subject to any provision of applicable law which  eliminates or
     reduces the allowance for  depreciation  or amortization in respect of that
     asset below the allowance  generally  available to an asset of its type. No
     accounting method changes of the Acquired Business exist or are proposed or
     threatened  which could give rise to an adjustment under Section 481 of the
     Code. If the Company or any  predecessor  corporation at any time has filed
     an  election  to  be  an S  corporation,  within  the  meaning  of  Section
     1361(a)(1)  of  the  Code  or  any  predecessor   provision  or  comparable
     provisions of state laws, the Company and any such predecessor  corporation
     have at all times met all requirements for that election, and that election
     has at all times been and is presently valid and in full force and effect.

     Section  2.30  GOVERNMENT  CONTRACTS.  Except as Schedule  2.30 sets forth,
neither the Company nor any Company  Subsidiary  is a party to any  governmental
contract subject to price redetermination or renegotiation.

     Section  2.31  ABSENCE OF CHANGES.  Since the Current  Balance  Sheet Date,
except as Schedule  2.31 sets forth,  none of the  following  has occurred  with
respect to the Company or any Company Subsidiary:

                                      -20-
<PAGE>
               (i) any circumstance,  condition, event or state of facts (either
          singly or in the aggregate), other than conditions generally affecting
          the  Industry,  which has caused,  is causing or will cause a Material
          Adverse Effect;

               (ii) any change in its authorized  Capital Stock or in any of its
          outstanding Capital Stock or Derivative Securities;

               (iii)any Restricted Payment, except any declaration or payment of
          dividends  by any  Company  Subsidiary  solely to the  Company and any
          Restricted Payment that Section 4.03 permits;

               (iv) any increase in, or any  commitment  or promise to increase,
          the rates of Cash  Compensation as of the date hereof,  or the amounts
          or other benefits paid or payable under any Company ERISA Pension Plan
          or Other  Compensation Plan, except for ordinary and customary bonuses
          and salary  increases for employees  (other than the  Stockholders  or
          their  Immediate  Family  Members)  at the  times  and in the  amounts
          consistent with its past practice;

               (v) any work interruptions,  labor grievances or claims filed, or
          any similar  event or  condition  of any  character,  that will have a
          Material Adverse Effect following the Effective Time;

               (vi)  any  distribution,  sale or  transfer  of,  or any  Company
          Commitment  to  distribute,  sell or  transfer,  any of its  assets or
          properties  of  any  kind  which  singly  is or in the  aggregate  are
          Material to the Acquired Business, other than distributions,  sales or
          transfers in the ordinary  course of its business and consistent  with
          its past  practices to Persons other than the  Stockholders  and their
          Immediate Family Members and Affiliates;

               (vii)any cancellation,  or agreement to cancel, any Indebtedness,
          obligation or other liability owing to it, including any Indebtedness,
          obligation or other liability of any Stockholder or any Related Person
          or Affiliate thereof,  provided that it may negotiate and adjust bills
          in the  course  of good  faith  disputes  with  customers  in a manner
          consistent with past practice,  if all those  adjustments are included
          in the Supplemental Information provided USC pursuant to Section 4.07;

               (viii)  any  plan,   agreement   or   arrangement   granting  any
          preferential  rights to purchase or acquire any interest in any of its
          assets,  property or rights or requiring  consent of any Person to the
          transfer and assignment of any such assets, property or rights;

               (ix) any  purchase  or  acquisition  of,  or  agreement,  plan or
          arrangement  to purchase or acquire,  any  property,  rights or assets
          outside of the  ordinary  course of its business  consistent  with its
          past practices;

                                      -21-
<PAGE>
               (x) any waiver of any of its rights or claims  that  singly is or
          in the aggregate are Material to the Acquired Business;

               (xi) any  transaction  by it outside the  ordinary  course of its
          business or not consistent with its past practices;

               (xii)any  incurrence  by  it  of  any  Indebtedness  (other  than
          Indebtedness,  if  any,  that  Section  4.03  permits  to be  paid  as
          Restricted   Payments)   or  any   Guaranty   not   constituting   its
          Indebtedness,  or any Company  Commitment to incur any Indebtedness or
          any such Guaranty;

               (xiii) any investment in the Capital Stock, Derivative Securities
          or Indebtedness of any Person other than a Permitted Investment;

               (xiv)except   in  accordance   with  the   consolidated   capital
          expenditure  budget of the Acquired Business for the Company's current
          fiscal  year,  any capital  expenditure  or series of related  capital
          expenditures  by the  Acquired  Business  in  excess  of  $25,000,  or
          commitments  by the  Acquired  Business to make  capital  expenditures
          totaling in excess of $25,000;

               (xv) any  prepayment  of any  Indebtedness,  obligation  or other
          liability owing by it to any Person which this Agreement  contemplates
          the Stockholders, or any one or more of them, will assume prior to the
          Effective Time;

               (xvi)any  change in the terms of payment by its customers for any
          services  it  performs  or products it sells the effect of which is to
          enable the Acquired Business to recognize revenues in its statement of
          operations  for any  period  ending on or before the date of the Final
          Balance Sheet which, but for that change,  the Acquired Business would
          not so recognize before a period beginning after the date of the Final
          Balance Sheet; or

               (xvii) any cancellation or termination of a Material Agreement of
          the Acquired Business.

     Section 2.32 BANK RELATIONS; POWERS OF ATTORNEY. Schedule 2.32 sets forth:

               (i) the name of each  financial  institution  in which any Entity
          the   Acquired   Business   includes  has   borrowing  or   investment
          arrangements, deposit or checking accounts or safe deposit boxes;

               (ii) the types of those arrangements and accounts,  including, as
          applicable,  names in which accounts or boxes are held, the account or
          box numbers and the name of each Person  authorized to draw thereon or
          have access thereto; and


                                      -22-
<PAGE>
               (iii)the  name of each Person  holding a general or special power
          of  attorney  from any Entity the  Acquired  Business  includes  and a
          description of the terms of each such power.

                                   ARTICLE III

                      REPRESENTATIONS AND WARRANTIES OF USC

     USC  represents  and  warrants  to, and agrees  with,  the Company and each
Stockholder  that  all the  following  representations  and  warranties  in this
Article  III are as of the date of this  Agreement,  and will be on the  Closing
Date and immediately prior to the Effective Time, true and correct:

     Section 3.01 ORGANIZATION;  POWER. Each of USC and USC Sub is a corporation
duly  organized,  validly  existing and in good  standing  under the laws of the
State of Delaware, and each of USC and USC Sub has all requisite corporate power
and authority under the laws of the State of Delaware and its Charter  Documents
to own or lease and to  operate  its  properties  presently  and  following  the
Effective  Time and to carry on its business as now conducted and as proposed to
be conducted following the Effective Time.

     Section 3.02 AUTHORIZATION;  ENFORCEABILITY; ABSENCE OF CONFLICTS; REQUIRED
CONSENTS. (a) The execution, delivery and performance by each of USC and USC Sub
of this  Agreement and each other  Transaction  Document to which it is a party,
and the effectuation of the Acquisition and the other transactions  contemplated
hereby and thereby,  are within its corporate power under its Charter  Documents
and the applicable  Governmental  Requirements of the State of Delaware and have
been duly authorized by all proceedings, including actions permitted to be taken
in lieu of proceedings,  required under its Charter Documents and the applicable
Governmental Requirements of the State of Delaware.

          (b)  This  Agreement  has  been,  and  each of the  other  Transaction
     Documents to which either of USC or USC Sub is a party,  when  executed and
     delivered  by the  parties  thereto,  will have  been,  duly  executed  and
     delivered  by it and is, or when so  executed  and  delivered  will be, its
     legal, valid and binding  obligation,  enforceable against it in accordance
     with its terms,  except as that  enforceability  may be (i)  limited by any
     applicable  bankruptcy,  insolvency,  fraudulent transfer,  reorganization,
     moratorium or similar laws affecting the  enforcement of creditors'  rights
     generally or any applicable law that limits rights to  indemnification  and
     (ii) subject to general  principles of equity  (regardless  of whether that
     enforceability is considered in a proceeding in equity or at law).

          (c) The execution,  delivery and  performance in accordance with their
     respective terms by each of USC and USC Sub of the Transaction Documents to
     which it is a party have not and will not (i) violate, breach or constitute
     a  default  under  (A) the  Charter  Documents  of USC or USC Sub,  (B) any
     Governmental  Requirement  applicable to USC or USC Sub or (C) any Material
     Agreement of USC or USC Sub, (ii) result in the  acceleration  or mandatory
     prepayment  of  any   Indebtedness,   or  any  Guaranty  not   constituting
     Indebtedness, of USC or USC Sub or afford any

                                      -23-
<PAGE>
     holder  of any of that  Indebtedness,  or any  beneficiary  of any of those
     Guaranties,  the right to  require  USC or USC Sub to redeem,  purchase  or
     otherwise  acquire,  reacquire  or repay  any of that  Indebtedness,  or to
     perform any of those  Guaranties,  (iii) cause or result in the  imposition
     of, or afford any Person the right to obtain, any Lien upon any property or
     assets of USC or USC Sub (or upon any revenues, income or profits of either
     USC  or  USC  Sub  therefrom),   other  than  (A)  Liens  that  may  secure
     Indebtedness  of USC to its  commercial  lenders  and (B)  negative  pledge
     covenants of USC respecting its assets,  or (iv) result in the  revocation,
     cancellation, suspension or material modification, in any single case or in
     the aggregate,  of any Governmental Approval possessed by USC or USC Sub at
     the date hereof and  necessary for the ownership or lease and the operation
     of its  properties  or the  carrying on of its  business as now  conducted,
     including  any  necessary   Governmental  Approval  under  each  applicable
     Environmental Law and Industry Law.

          (d) Except for (i) the filing of the  Certificates of Merger,  if any,
     with  the  applicable  Governmental  Authorities  ,  (ii)  filings  of  the
     Registration Statement under the Securities Act and the SEC order declaring
     the Registration  Statement effective under the Securities Act and (iii) as
     may be required by the HSR Act or the applicable  state  securities or blue
     sky laws, no  Governmental  Approvals  are required to be obtained,  and no
     reports  or  notices  to or filings  with any  Governmental  Authority  are
     required  to be  made,  by USC or USC Sub for the  execution,  delivery  or
     performance by USC or USC Sub of the Transaction Documents to which it is a
     party,  the enforcement  against USC or USC Sub, as the case may be, of its
     obligations thereunder or the effectuation of the Acquisition and the other
     transactions contemplated thereby.

     Section  3.03 CHARTER  DOCUMENTS.  USC has  delivered to the Company  true,
complete  and  correct  copies  of the  Charter  Documents  of USC No  breach or
violation of any Charter Document of USC has occurred and is continuing.

     Section 3.04 CAPITAL STOCK OF USC AND USC SUB. (a) Immediately prior to the
Effective Time, (i) the authorized Capital Stock of USC will be comprised of (A)
40,000,000 shares of USC Common Stock, (B) one share of class A stock, par value
$.001 per share,  and (C) 5,000,000  shares of preferred  stock, par value $.001
per  share,  (ii)  before  giving  effect to the  Merger and the merger or other
acquisition  transactions  the Other Agreements  contemplate,  (A) the number of
shares of USC Common Stock then issued and  outstanding  will be as set forth in
the Registration  Statement when it becomes  effective under the Securities Act,
(B) no shares of the USC preferred  stock then will be issued or outstanding and
(C) USC will have reserved for issuance  pursuant to  compensation  plans or the
exercise of Derivative  Securities  the number of shares of USC Common Stock set
forth  in the  Registration  Statement  when  it  becomes  effective  under  the
Securities Act.

          (b) The  authorized  Capital  Stock of USC Sub is  comprised  of 1,000
     shares of USC Sub Common Stock, all of which shares are issued, outstanding
     and owned, of record and beneficially,  by USC free and clear of all Liens,
     except for any liens USC may grant in favor of its  lenders  in  connection
     with its financing arrangements. No Derivative Securities of USC Sub exist.

                                      -24-
<PAGE>
          (c)  All  shares  of  USC  Common  Stock  and  USC  Sub  Common  Stock
     outstanding  immediately prior to the Effective Time, and all shares of USC
     Common Stock to be issued  pursuant to  Paragraph 2, when issued,  (i) will
     have been duly authorized and validly issued in accordance with the general
     corporation  laws  of the  State  of  Delaware  and  the  issuer's  Charter
     Documents and (ii) will be fully paid and nonassessable. None of the shares
     of USC Common Stock to be issued pursuant to Paragraph 2 will, when issued,
     have been issued in breach or violation of (i) any applicable  statutory or
     contractual  preemptive  rights, or any other rights of any kind (including
     any rights of first offer or  refusal),  of any Person or (ii) the terms of
     any of its Derivative Securities then outstanding.

     Section 3.05  SUBSIDIARIES.  Immediately prior to the Closing Date, (i) USC
will have no  Subsidiaries  other  than  those  Exhibit  21 to the  Registration
Statement  lists,  (ii) USC Sub will have no Subsidiaries  and (iii) neither USC
nor USC Sub will own, of record or beneficially,  directly or indirectly through
any Person or otherwise (except pursuant hereto or to the Other Agreements), any
Capital  Stock or  Derivative  Securities  of any Entity not  described  in this
Section 3.05 as a  Subsidiary  of USC (in the case of USC) or any Entity (in the
case of USC Sub).

     Section 3.06 COMPLIANCE  WITH LAWS; NO LITIGATION.  Each of USC and USC Sub
is in  compliance  with all  Governmental  Requirements  applicable to it,and no
Litigation  is pending or, to the  knowledge of USC,  threatened to which USC or
USC Sub is or may become a party which (i) questions or involves the validity or
enforceability  of  any  obligation  of USC or USC  Sub  under  any  Transaction
Document,  (ii) seeks (or  reasonably may be expected to seek) (A) to prevent or
delay  consummation by USC or USC Sub of the  transactions  contemplated by this
Agreement  to be  consummated  by USC or USC Sub,  as the  case  may be,  or (B)
damages from USC or USC Sub in connection with any such consummation.

     Section  3.07  CONDUCT  OF  OPERATIONS  TO  DATE;  ABSENCE  OF  UNDISCLOSED
LIABILITIES.   Except  for  its  activities  in  connection  with  the  proposed
acquisitions of the Founding Companies and other acquisition  candidates and the
IPO, USC has  conducted  no  significant  operations  during the period from its
inception  to the  date of this  Agreement,  and,  except  for  expenses  it has
incurred in connection with those  activities,  as of the date of this Agreement
USC has no material  liabilities that the Private Placement  Memorandum does not
disclose.

     Section 3.08  CAPITALIZATION OF USC. The authorized and outstanding Capital
Stock of USC as of the date of this  Agreement  is as set  forth in the  Private
Placement  Memorandum.  Except as the Private  Placement  Memorandum  discloses,
there will be no outstanding  Capital Stock of USC, and no options,  warrants or
other rights to acquire Capital Stock of USC,  outstanding as of the IPO Closing
Date.

     Section 3.09 NO BROKERS.  Except as the Private  Placement  Memorandum sets
forth, USC has not, directly or indirectly, in connection with this Agreement or
the transactions contemplated hereby (i) employed any broker, finder or agent or
(ii) agreed to pay or incurred any

                                      -25-
<PAGE>
obligation to pay any broker's or finder's fee, any sales commission or any
similar form of compensation.

     Section 3.10 PRIVATE PLACEMENT  MEMORANDUM.  At the date hereof the Private
Placement  Memorandum  (other than the historical  financial  statements and the
notes  thereto  of the  Company  and  the  historical  information  it  contains
respecting  the Acquired  Business and the  Stockholders,  to which this Section
3.10 does not apply) does not contain any untrue statement of a material fact or
omit to state a material fact  necessary in order to make the statements it does
contain not materially  misleading in the light of the circumstances under which
those statements were made.

                                   ARTICLE IV
                    COVENANTS EXTENDING TO THE EFFECTIVE TIME

     Section  4.01  ACCESS AND  COOPERATION;  DUE  DILIGENCE.  (a) From the date
hereof  and  until  the  Effective  Time,  the  Company  will (i)  afford to the
Representatives of USC and each Other Founding Company reasonable access, during
normal  business  hours  and  with  reasonable  prior  notice,  to all  the  key
employees,  sites, properties,  books and records of each of the Company and the
Company Subsidiaries,  provided that such access does not unreasonably interfere
with  the  Company's  business  and  operations,  (ii)  provide  USC  with  such
additional  financial and operating data and other  information  relating to the
business and properties of each of the Company and the Company  Subsidiaries  as
USC or any Other Founding  Company may from time to time reasonably  request and
(iii)  cooperate with USC and each Other Founding  Company and their  respective
Representatives  in the  preparation of any documents or other material that may
be  required  in  connection  with  any  Transaction   Documents  or  any  Other
Transaction  Documents.  Each  Stockholder and the Company will treat,  and will
cause the  Company's  Representatives  to treat,  all  Confidential  Information
obtained by them in connection  with the  negotiation  and  performance  of this
Agreement or the due  diligence  investigations  conducted  with respect to each
Other  Founding  Company as  confidential  in accordance  with the provisions of
Section  10.01.  USC will  cause  each  Other  Founding  Company to enter into a
provision  substantially identical to this Section 4.01 in order to require each
Other Founding Company and its owners and  Representatives  to keep confidential
any  Confidential  Information  respecting  any of the  Company  and the Company
Subsidiaries that Other Founding Company or any of its Representatives  obtains.
Prior to the Effective  Time, USC and the Other  Founding  Companies may provide
Confidential  Information respecting the Company and the Company Subsidiaries to
(i) the Other Founding  Companies and prospective  Other Founding  Companies and
their respective  Representatives,  (ii) USC's actual and prospective  financing
sources and their  respective  Representatives,  (iii) the  Underwriter  and its
Representatives,  (iv) prospective  investors in the IPO, (v) USC's  prospective
insurance brokers and software or other information  technology vendors and (vi)
USC's  Representatives,  but otherwise will keep that  Confidential  Information
confidential in accordance with the provisions of Section 10.01.

          (b) Each of the Company and the Stockholders will use its commercially
     reasonable  best efforts to secure,  as soon as practicable  after the date
     hereof, all approvals or

                                      -26-
<PAGE>
     consents of third  Persons as may be necessary to enable them to consummate
     the  transactions  contemplated  hereby.  USC will use its best  efforts to
     secure,  as soon as  practicable  after the date hereof,  all  approvals or
     consents of third  Persons as may be necessary to enable USC and USC Sub to
     consummate the transactions contemplated hereby.

          (c) From the date hereof and until the  Effective  Time,  USC will (i)
     afford to the Representatives of the Company and the Stockholders access to
     all sites,  properties,  books and records of USC and USC Sub, (ii) provide
     the Company with such  additional  financial and  operating  data and other
     information  relating to the business and  properties of USC and USC Sub as
     the Company or any Stockholder may from time to time reasonably request and
     (iii) cooperate with the Company and the  Stockholders and their respective
     Representatives in the preparation of any documents or other material which
     may be required in connection with any Transaction Documents.

          (d) If this  Agreement is terminated  pursuant to Section  11.01,  USC
     promptly  will (i)  return  all  written  Confidential  Information  of the
     Company  it  and  USC  Sub  then  possess  to  the  Company  and  (ii)  use
     commercially  reasonable efforts to facilitate the return to the Company of
     all  Confidential  Information  of  the  Company  that  USC  or  any of its
     Representatives has provided to any Other Founding Company.

     Section 4.02 CONDUCT OF BUSINESS  PENDING THE EFFECTIVE TIME. From the date
hereof and until the  Effective  Time,  the  Company  will,  and will cause each
Company  Subsidiary  to,  except as and only to the extent set forth in Schedule
4.02:

               (i) carry on its businesses in  substantially  the same manner as
          it has  heretofore  and not introduce  any new methods of  management,
          operation  or  accounting  that in the  aggregate  are Material to the
          Acquired Business;

               (ii) maintain its properties and facilities, including those held
          under  leases,  in as good working  order and condition as at present,
          ordinary wear and tear excepted;

               (iii) perform all its obligations under agreements relating to or
          affecting its assets, properties and other rights;

               (iv) keep in full force and effect without  interruption  all its
          present insurance policies or other comparable insurance coverage;

               (v)  use  reasonable  commercial  efforts  to  (A)  maintain  and
          preserve  its  business  organization  intact,  (B) retain its present
          employees and (C) maintain its relationships with suppliers, customers
          and others having business relations with it;

               (vi) comply with all applicable Governmental Requirements that in
          the aggregate are Material to the Acquired Business; and

                                      -27-
<PAGE>
               (vii) except as this  Agreement  requires or  expressly  permits,
          maintain the  instruments  and  agreements  governing its  outstanding
          Indebtedness  and leases on their present terms and not enter into new
          or amended  Indebtedness or lease instruments or agreements  involving
          amounts over $10,000 in any single case or $100,000 in the  aggregate,
          without the prior  written  consent of USC (which  consent will not be
          unreasonably withheld).

     Section  4.03  PROHIBITED  ACTIVITIES.  From the date  hereof and until the
Effective  Time,  without  the prior  written  consent  of USC or unless as this
Agreement  requires or  expressly  permits,  the Company  will not, and will not
permit any Company Subsidiary to, except as and only to the extent Schedule 4.03
sets forth:

               (i) make any change in its Charter Documents;

               (ii) issue any of its Capital Stock or issue or otherwise  create
          any of its Derivative Securities;

               (iii) make any Restricted Payment;

               (iv) make any investments  (other than Permitted  Investments) in
          the  Capital  Stock,  Derivative  Securities  or  Indebtedness  of any
          Person;

               (v) enter into any  contract or  commitment  or incur or agree to
          incur  any  liability  or make any  capital  expenditures  in a single
          transaction or a series of related transactions involving an aggregate
          amount of more than $10,000  otherwise than in the ordinary  course of
          its business and consistent with its past practice;

               (vi)   increase  or  commit  or  promise  to  increase  the  Cash
          Compensation  payable or to become  payable to any officer,  director,
          stockholder,  employee or agent,  consultant or independent contractor
          of any of the  Company  and  the  Company  Subsidiaries  or  make  any
          discretionary  bonus or  management  fee  payment to any such  Person,
          except  bonuses  or salary  increases  to  employees  (other  than the
          Stockholders  or their  Immediate  Family Members) at the times and in
          the amounts consistent with its past practice;

               (vii) create, assume or permit to be created or imposed any Liens
          (other than  Permitted  Liens)  upon any of its assets or  properties,
          whether now owned or hereafter  acquired,  except for  purchase  money
          Liens incurred in connection with the acquisition of equipment with an
          aggregate cost not in excess of $10,000 and necessary or desirable for
          the  conduct of the  business  of any of the  Company  and the Company
          Subsidiaries;

               (viii)  (A)  adopt,  establish,  amend  or  terminate  any  ERISA
          Employee  Benefit  Plan,  or any Other  Compensation  Plan or Employee
          Policies and Procedures or (B) take any discretionary  action, or omit
          to take any contractually required action, if that action or

                                      -28-
<PAGE>
          omission  could  either (1) deplete  the assets of any ERISA  Employee
          Benefit  Plan  or any  Other  Compensation  Plan or (2)  increase  the
          liabilities or obligations under any such plan;

               (ix) sell, assign,  lease or otherwise transfer or dispose of any
          of its owned or leased  property or  equipment  otherwise  than in the
          ordinary course of its business and consistent with its past practice;

               (x) negotiate for the acquisition of any business or the start-up
          of any new business;

               (xi) merge, consolidate or effect a share exchange with, or agree
          to merge,  consolidate  or  effect a share  exchange  with,  any other
          Entity;

               (xii) waive any of its rights or claims that in the aggregate are
          Material to the Acquired Business,  provided that it may negotiate and
          adjust bills in the course of good faith  disputes with customers in a
          manner consistent with past practice, but such adjustments will not be
          deemed  to be  included  in  Schedule  4.03  unless  the  Supplemental
          Information lists them;

               (xiii) commit  breaches that in the aggregate are Material to the
          Acquired Business or amend or terminate any Material  Agreement of the
          Acquired Business or any of its Governmental Approvals; or

               (xiv) enter into any other  transaction  (i) outside the ordinary
          course of its business and  consistent  with its past practice or (ii)
          prohibited hereby.

     Section 4.04 NO SHOP. Each of the Company and the Stockholders agrees that,
from the date hereof and until the first to occur of the  Effective  Time or the
termination of this Agreement in accordance with Article XI, neither the Company
nor any Stockholder,  nor any of their  respective  officers and directors will,
and the Company and each  Stockholder  will direct and use their reasonable best
efforts  to cause each of their  respective  Representatives  not to,  initiate,
solicit,  encourage or respond to, directly or indirectly,  any inquiries or the
making or  implementation  of any proposal or offer  (including  any proposal or
offer to the Stockholders) with respect to a merger, acquisition,  consolidation
or similar  transaction  involving,  or any  purchase of all or any  significant
portion  of the  assets or any  equity  securities  of,  the  Company  (any such
proposal or offer being an "Acquisition  Proposal") or engage in any activities,
discussions or negotiations concerning,  or provide any Confidential Information
respecting, the Acquired Business, any Other Founding Company or USC to, or have
any  discussions  with,  any  Person  relating  to an  Acquisition  Proposal  or
otherwise  facilitate  any effort or attempt to make or implement an Acquisition
Proposal. The Company and each Stockholder will: (i) immediately cease and cause
to be terminated any existing  activities,  discussions or negotiations with any
Persons conducted heretofore with respect to any of the foregoing, and each will
take the steps necessary to inform the Persons referred to in the first sentence
of this Section 4.04 of the  obligations  undertaken in this Section  4.04;  and
(ii) notify USC

                                      -29-
<PAGE>
immediately  if any such  inquiries  or  proposals  are  received  by,  any such
information is requested from or any such discussions or negotiations are sought
to be initiated or continued with the Company or any Stockholder.

     Section 4.05 NOTICE TO BARGAINING  AGENTS.  Prior to the Closing Date,  the
Company  will  (i)  satisfy  any  requirement  for  notice  of the  transactions
contemplated by this Agreement under applicable collective bargaining agreements
and (ii) provide USC with proof that any required notice has been sent.

     Section 4.06  NOTIFICATION OF CERTAIN  MATTERS.  The  Stockholders  and the
Company will give prompt  notice to USC of (i) the  existence or  occurrence  of
each  condition or state of facts of which any of them become aware that will or
reasonably  could be  expected  to cause any  representation  or warranty of the
Company or any  Stockholder  contained  herein to be untrue or  incorrect in any
material  respect at or prior to the Closing or on the IPO Closing Date and (ii)
any material failure of any Stockholder or the Company to comply with or satisfy
any  covenant,  condition or agreement to be complied  with or satisfied by that
Person  hereunder.  USC  will  give  prompt  notice  to the  Company  of (i) the
existence or occurrence of each condition or state of facts of which USC becomes
aware that will or reasonably could be expected to cause any  representation  or
warranty of USC or USC Sub  contained  herein to be untrue or  inaccurate  at or
prior to the Closing or on the IPO Closing Date and (ii) any material failure of
USC or USC Sub to comply with or satisfy any covenant, condition or agreement to
be  complied  with or  satisfied  by it  hereunder.  The  delivery of any notice
pursuant  to  this   Section   4.06  will  not  be  deemed  to  (i)  modify  the
representations or warranties herein of the party delivering that notice, or any
other party,  which modification may be made only pursuant to Section 4.07, (ii)
modify the  conditions  set forth or  referred to in Article V or (iii) limit or
otherwise  affect the remedies  available  hereunder to the party receiving that
notice.

               Section 4.07  SUPPLEMENTAL  INFORMATION.  Each of the Company and
the Stockholders agrees that, with respect to the representations and warranties
of that party contained in this  Agreement,  that party will have the continuing
obligation (except to the extent Section 4.03 or 4.06 otherwise  provides) until
the  Closing  to  provide  USC  promptly  with  such   additional   supplemental
Information (collectively,  the "Supplemental Information"),  in the form of (i)
amendments to then existing Schedules or (ii) additional Schedules,  as would be
necessary, in the light of the circumstances,  conditions,  events and states of
facts  then  known to the  Company  or any  Stockholder,  to make  each of those
representations and warranties true and correct as of the Closing and on the IPO
Closing Date.  For purposes only of  determining  whether the  conditions to the
obligations  of USC and USC Sub which are  specified  in Section  5.03 have been
satisfied,  the  Schedules  as of the  Closing  Date  will be  deemed  to be the
Schedules as of the date hereof as amended or supplemented  by the  Supplemental
Information  provided to USC prior to the Closing pursuant to this Section 4.07;
provided,  however,  that if the Supplemental  Information so provided discloses
the existence of circumstances,  conditions, events or states of facts which, in
any  combination  thereof,  (i) have had a Material  Adverse Effect that was not
reflected in the determination of the Ceiling Amount or, in the sole judgment of
USC (which will be conclusive for

                                      -30-
<PAGE>
purposes of this Section 4.07 and Article XI, but not for any purpose of Section
6.05 or Article VII),  (ii) are having or will have a Material  Adverse  Effect,
USC will be entitled to terminate this Agreement  pursuant to Section 11.01(iv);
and  provided,  further,  that if USC is entitled to  terminate  this  Agreement
pursuant to Section  11.01(iv),  but elects not to do so, it will be entitled to
treat as USC Indemnified  Losses or USC  Unindemnified  Losses (which  treatment
will not  prejudice the right of any  Stockholder  under Section 6.05 or Article
VII, as applicable, to contest Damage Claims made by USC in respect of those USC
Indemnified Losses or USC Unindemnified  Losses), as applicable,  all Damages to
the Acquired Business which are attributable to the  circumstances,  conditions,
events and states of facts first  disclosed  herein after the date hereof in the
Supplemental  Information.  USC will  provide  the  Company  with  copies of the
Registration Statement, including all pre-effective amendments thereto, promptly
after the filing thereof with the SEC under the Securities Act.

     Section 4.08  COOPERATION  IN CONNECTION  WITH THE IPO. The Company and the
Stockholders  will  (i)  provide  USC,  the  Underwriter  and  their  respective
Representatives  with all the  Information  concerning the Company or any of the
Stockholders  which is  reasonably  requested by USC, the  Underwriter  or their
respective  Representatives  from time to time in connection  with effecting the
IPO and  (ii)  cooperate  with  USC and the  Underwriter  and  their  respective
Representatives  in the preparation and amendment of the Registration  Statement
(including  the Financial  Statements)  and in responding to the comments of the
SEC staff, if any, with respect thereto.  The Company and each Stockholder agree
promptly  to (i) advise USC and their  legal  counsel if, at any time during the
period in which a  prospectus  relating to the IPO is  required to be  delivered
under  the  Securities  Act,  any  information  contained  in the  then  current
Registration  Statement  prospectus  concerning the Company or the  Stockholders
becomes incorrect or incomplete in any material respect and (ii) provide USC and
their legal  counsel  with the  information  needed to correct or complete  that
information.  Prior to the time the Registration Statement or any post-effective
amendment  thereto becomes  effective under the Securities Act, USC will provide
an  opportunity  to review and  comment  with  respect to that  document  to one
counsel  selected  by a  majority  in  number  of  the  Founding  Companies  and
reasonably satisfactory to USC.

     Section 4.09 ADDITIONAL FINANCIAL  STATEMENTS.  The Company will furnish to
USC:

               (i) as soon as  available  and in any event  within 30 days after
          the end of each of the Company's  fiscal  quarters which ends prior to
          the IPO Pricing  Date,  an  unaudited  balance  sheet of the  Acquired
          Business  as of  the  end of  that  fiscal  quarter  and  the  related
          statements of income or operations,  cash flows and  stockholders'  or
          other owners' equity for that fiscal quarter and for the period of the
          Acquired  Business' fiscal year ended with that quarter,  in each case
          (A)   setting   forth  in   comparative   form  the  figures  for  the
          corresponding  portion of the Acquired  Business' previous fiscal year
          and (B) prepared on the same combined,  consolidated or other basis on
          which the Initial  Financial  Statements  were  prepared in accordance
          with GAAP  applied on basis  consistent  (1)  throughout  the  periods
          indicated  (excepting  footnotes)  and (2) with the basis on which the
          Initial Financial  Statements including the Current Balance Sheet were
          prepared; and

                                      -31-
<PAGE>
               (ii) if requested by USC in connection  with any amendment of the
          Registration  Statement and promptly following any such request,  such
          summary  combined,  consolidated or other operating or other financial
          information of the Acquired Business as of the end of either the first
          or  second  fiscal  month  in  any of the  Acquired  Business'  fiscal
          quarters as USC may request.

     Section 4.10  TERMINATION OF PLANS.  If requested by USC, the Company will,
or will  cause  the  applicable  Company  Subsidiary  to,  if  permitted  by all
applicable Governmental Requirements to do so, terminate each Plan Schedule 2.27
identifies as a "Plan To Be Terminated" prior to the Effective Time.

     Section 4.11  DISPOSITION OF UNWANTED  ASSETS.  At or prior to the Closing,
the  Company  will  make all  arrangements  and take  all  such  actions  as are
necessary and  satisfactory  to USC to dispose,  prior to the Effective Time, of
those assets of it or of one or more of the Company  Subsidiaries which Schedule
4.11 lists as unwanted assets.

     Section 4.12 HSR ACT MATTERS.  If USC determines  that filings  pursuant to
and  under the HSR Act are  necessary  or  appropriate  in  connection  with the
effectuation  of  the  Acquisition  or  the  consummation  of  the  acquisitions
contemplated by the Other Agreements, and advises the Company in writing of that
determination,  the Company  promptly  will  compile and file (or will cause its
"ultimate  parent  entity" (as  determined for purposes of the HSR Act) to file)
under the HSR Act such  information  respecting it as the HSR Act requires of an
Entity to be acquired,  and the  expiration  or  termination  of the  applicable
waiting  period  and any  extension  thereof  under the HSR Act will be deemed a
condition  precedent  Section 5.01(b) sets forth. USC will assist the Company in
its preparation of that information, if any.

                                    ARTICLE V

             THE CLOSING AND CONDITIONS TO CLOSING AND CONSUMMATION

     Section  5.01  CONDITIONS  TO  THE  OBLIGATIONS  OF  EACH  PARTY.  (a)  The
obligation of each party hereto to take the actions  contemplated to be taken by
that  party at the  Closing  is  subject  to the  satisfaction  on or before the
Closing  Date,  or written  waiver  pursuant  to Section  10.04,  of each of the
following conditions:

               (i) NO LITIGATION.  No Litigation shall be pending on the Closing
          Date to restrain,  prohibit or otherwise  interfere with, or to obtain
          material  damages or other relief from USC, any Subsidiary of USC, the
          Company or any Company Subsidiary in connection with, the consummation
          of the Acquisition or the IPO;

               (ii) GOVERNMENTAL  APPROVALS.  All Governmental  Approvals (other
          than the acceptance for filing of the Certificates of Merger) required
          to be obtained by any of the

                                      -32-
<PAGE>
          Company,  USC and USC Sub in connection  with the  consummation of the
          Acquisition and the IPO shall have been obtained; and

               (iii) THE REGISTRATION STATEMENT. (A) The Registration Statement,
          as amended  to cover the  offering,  issuance  and sale by USC of such
          number of shares of USC Common  Stock at the IPO Price (which need not
          be set forth in the Registration  Statement when it becomes  effective
          under the  Securities  Act) as shall yield  aggregate cash proceeds to
          USC from that sale (net of the Underwriter's  discount or commissions)
          in at least the amount (the "Minimum Cash Amount") that is sufficient,
          when added to the funds, if any, available from other sources (if any,
          and as set  forth  in  the  Registration  Statement  when  it  becomes
          effective under the Securities Act) (the "Other Financing Sources") to
          enable USC to pay or otherwise deliver on the IPO Closing Date (1) the
          total  cash  portion  of  the  Acquisition  Consideration  then  to be
          delivered  pursuant to  Paragraph 2, (2) the total cash portion of the
          acquisition  consideration  then to be delivered pursuant to the Other
          Agreements  as  a  result  of  the  consummation  of  the  acquisition
          transactions   contemplated  thereby  and  (3)  the  total  amount  of
          Indebtedness of the Founding  Companies and USC which the Registration
          Statement  discloses  at the  time  it  becomes  effective  under  the
          Securities  Act will be repaid with proceeds  received by USC from the
          IPO  and  the  Other  Financing  Sources,  shall  have  been  declared
          effective  under  the  Securities  Act by the SEC;  (B) no stop  order
          suspending the effectiveness of the Registration  Statement shall have
          been  issued  by the SEC,  and the SEC  shall  not have  initiated  or
          threatened  to  initiate  Litigation  for  that  purpose;  and (C) the
          Underwriter   shall  have   agreed  in  writing   (the   "Underwriting
          Agreement," which term includes the related pricing agreement, if any)
          to  purchase  from USC on a firm  commitment  basis for  resale to the
          public initially at the IPO Price, subject to the conditions set forth
          in the  Underwriting  Agreement,  such  number of shares of USC Common
          Stock covered by the Registration Statement as, when multiplied by the
          price per share of USC Common Stock to be paid by the  Underwriter  to
          USC  pursuant  to the  Underwriting  Agreement,  equals  at least  the
          Minimum Cash Amount.

          (b) The obligation of each party hereto with respect to the actions to
     be taken on the IPO  Closing  Date is subject to the  satisfaction  on that
     date of each of the following conditions:

               (i) NO  LITIGATION.  No  Litigation  shall be  pending on the IPO
          Closing Date to restrain,  prohibit or otherwise interfere with, or to
          obtain material  damages or other relief from USC or any Subsidiary of
          USC in connection  with, the  consummation  of the  Acquisition or the
          IPO;

               (ii) GOVERNMENTAL APPROVALS.  All Governmental Approvals required
          to be obtained by the Company,  USC and USC Sub in connection with the
          consummation  of the Acquisition and the IPO shall have been obtained;
          and

               (iii)  CLOSING OF THE IPO.  USC shall have issued and sold shares
          of USC  Common  Stock  to  the  Underwriter  in  accordance  with  the
          Underwriting Agreement for initial resale

                                      -33-
<PAGE>
          at the IPO Price and received  payment  therefor in an amount at least
          equal to the amount by which (A) the Minimum  Cash Amount  exceeds (B)
          the  aggregate  amount of funds  actually  received on the IPO Closing
          Date, if any, from any one or more of the Other Financing Sources.

     Section  5.02  CONDITIONS  TO  THE  OBLIGATIONS  OF  THE  COMPANY  AND  THE
STOCKHOLDERS.  (a) The  obligations  of the  Company and each  Stockholder  with
respect to actions to be taken by them at or before the  Closing  are subject to
the  satisfaction  on or before the Closing Date,  or the written  waiver by the
Company on behalf of itself and each  Stockholder  pursuant to Section 10.04, of
(i) all the  conditions  Paragraph 5 and Section  5.01(a) set forth and (ii) all
the following conditions:

          (A)  REPRESENTATIONS  AND  WARRANTIES.  All  the  representations  and
     warranties  of USC in this  Agreement  shall be true and  correct as of the
     Closing as though made at that time;

          (B) PERFORMANCE OF COVENANTS. USC and USC Sub shall have complied with
     all their respective covenants in Article IV;

          (C) DELIVERY OF  DOCUMENTS.  USC shall have  delivered to the Company,
     with copies for each Stockholder:

               (1) a USC officer's  certificate  respecting the  representations
          and  warranties  of USC in this  Agreement  and  compliance  with  the
          covenants  of USC and USC Sub in  Article  IV and in the form  thereof
          attached as an exhibit to the Closing Memorandum;

               (2) an  opinion  dated  the  Closing  Date and  addressed  to the
          Company  and  the  Stockholders  from  Counsel  for  USC  and  USC Sub
          substantially  in the  form  thereof  attached  as an  exhibit  to the
          Closing Memorandum;

               (3) a certificate of the secretary or any assistant  secretary of
          USC in the form thereof (without  attachments  thereto) attached as an
          exhibit to the  Closing  Memorandum  and  respecting,  and to which is
          attached:  (a)  the  Charter  Documents  of  each  of USC  and USC Sub
          (certified  by the  Secretary of State of the State of Delaware in the
          case of its certificate of incorporation  included  therein);  (b) the
          resolutions  of the boards of directors of USC and USC Sub  respecting
          the Transaction  Documents and the transactions  contemplated thereby;
          (c) a certificate respecting the incumbency and true signatures of the
          USC and USC Sub  officers  who execute the  Transaction  Documents  on
          behalf  of  USC  and  USC  Sub,  respectively;   and  (d)  a  specimen
          certificate evidencing shares of USC Common Stock;

               (4) the Registration Rights Agreement duly executed and delivered
          by USC; and

                                      -34-
<PAGE>
               (5) for USC,  a  certificate,  dated as of a Current  Date,  duly
          issued by the  appropriate  Governmental  Authorities  in the State of
          Delaware showing it to be in existence or good standing and authorized
          to do business in that State; and

          (D)  INCENTIVE   PLAN.  The  Incentive  Plan  the  Private   Placement
     Memorandum describes shall be in full force and effect.

               (b) The  obligations  of the  Company and each  Stockholder  with
          respect to the actions to be taken on the IPO Closing Date are subject
          to the  satisfaction  on that date of (i) all the  conditions  Section
          5.01(b) sets forth,  (ii) the condition  that all the  representations
          and warranties of USC in this  Agreement  shall be true and correct as
          of the IPO  Closing  Date as  though  made on  that  date,  (iii)  the
          condition  that USC and USC Sub  shall  have  complied  with all their
          respective  covenants  in  Article  IV,  (iv)  the  condition  Section
          5.02(a)(ii)(D)  sets  forth,  (v) the  condition  that USC shall  have
          delivered to the Company and each Stockholder a copy of (A) an opinion
          from  Counsel  for USC and USC Sub  dated  the IPO  Closing  Date  and
          addressed to USC and  providing  the  Stockholders  may rely  thereon,
          respecting  Section  351 of the  Code  and  substantially  in the form
          thereof  attached as an exhibit to the Closing  Memorandum,  and (B) a
          certificate of USC in  substantially  the form thereof attached to the
          form of opinion to which  subclause  (A) of this clause (v) refers and
          (vi) all the conditions Paragraph 5 sets forth, if any.

     Section  5.03  CONDITIONS  TO THE  OBLIGATIONS  OF USC AND USC SUB. (a) The
obligations of USC and USC Sub with respect to actions to be taken by them at or
before the  Closing  are  subject to the  satisfaction  on or before the Closing
Date,  or the written  waiver by USC pursuant to Section  10.04,  of (i) all the
conditions  Paragraph 5 and Section 5.01(a) set forth and (ii) all the following
conditions:

               (A) REPRESENTATIONS  AND WARRANTIES.  All the representations and
          warranties of the Stockholders and the Company in this Agreement shall
          be true and correct as of the Closing as though made at that time;

               (B)  PERFORMANCE OF COVENANTS.  The Company and the  Stockholders
          shall have complied with all their respective covenants in Article IV;

               (C) DELIVERY OF DOCUMENTS. The Stockholders and the Company shall
          have delivered to USC:

                    (1) a Company officer's certificate, signed by a Responsible
               Officer,  respecting  the  representations  and warranties of the
               Stockholders  and the Company in this  Agreement  and  compliance
               with the covenants of the Stockholders and the Company in Article
               IV and in the form thereof  attached as an exhibit to the Closing
               Memorandum;

                                      -35-
<PAGE>
                    (2) an opinion  dated the Closing Date and  addressed to USC
               from Counsel for the Company and the  Stockholders  substantially
               in the  form  thereof  attached  as an  exhibit  to  the  Closing
               Memorandum;

                    (3)  a  certificate   of  the  secretary  or  any  assistant
               secretary of the Company in the form thereof (without attachments
               thereto)  attached  as an exhibit to the Closing  Memorandum  and
               respecting,  and to which is attached,  (a) the Charter Documents
               of the Company;  (b) the resolutions of the board of directors of
               the  Company   respecting  the  Transaction   Documents  and  the
               transactions   contemplated   thereby;   and  (c)  a  certificate
               respecting the incumbency and true  signatures of the Responsible
               Officers who execute the  Transaction  Documents on behalf of the
               Company;

                    (4) from each Stockholder,  a certificate to the effect that
               no  withholding is required under Section 1445 of the Code and in
               the  form   thereof   attached  as  an  exhibit  to  the  Closing
               Memorandum,  with the blanks appropriately  filled, duly executed
               and delivered by that Stockholder;

                    (5) From each  officer and  director of the Company and each
               Company  Subsidiary,  if any, a notice of resignation in the form
               thereof attached as an exhibit to the Closing Memorandum; and

                    (6) for each of the Company and the Company Subsidiaries,  a
               certificate,  dated as of a  Current  Date,  duly  issued  by the
               appropriate  Governmental  Authorities in its Organization  State
               and,  in each  other  jurisdiction  Schedule  2.02  lists for it,
               showing it to be in good  standing and  authorized to do business
               in its Organization State and those other  jurisdictions and that
               all state franchise and/or income tax returns and taxes due by it
               in its Organization  State and those other  jurisdictions for all
               periods prior to the Closing have been filed and paid.

          (b) The  obligations of USC and USC Sub with respect to the actions to
     be taken on the IPO Closing  Date are subject to the  satisfaction  on that
     date of (i)  all the  conditions  Section  5.01(b)  sets  forth,  (ii)  the
     condition that all the  representations  and warranties of the Stockholders
     and the Company in this  Agreement  shall be true and correct as of the IPO
     Closing  Date as though  made on that date,  (iii) the  condition  that the
     Company and the Stockholders  shall have complied with all their respective
     covenants in Article IV and (iv) the conditions  Paragraph 5 sets forth, if
     any.

                                   ARTICLE VI

                     COVENANTS FOLLOWING THE EFFECTIVE TIME

     Section 6.01 DISCLOSURE.  If,  subsequent to the IPO Pricing Date and prior
to the 25th day after the date of the Final Prospectus,  any Stockholder becomes
aware of any fact or

                                      -36-
<PAGE>
circumstance  which would change (or, if after the  Effective  Time,  would have
changed) in any material respect a representation  or warranty of the Company or
any  Stockholder  in this  Agreement  or would  affect  any  document  delivered
pursuant hereto in any material  respect,  that  Stockholder  will promptly give
notice of that fact or circumstance to USC.

     Section 6.02  PREPARATION  AND FILING OF TAX RETURNS.  After the  Effective
Time,  each party hereto will, and will cause its Affiliates to, provide to each
of the other parties  hereto such  cooperation  and  information  as any of them
reasonably may request in filing any Return, amended Return or claim for refund,
determining a liability for Taxes or a right to refund of Taxes or in conducting
any audit or other proceeding in respect of Taxes.  Subject to the last sentence
of this Section 6.02, this  cooperation will be at the expense of the requesting
party.  This cooperation and information  shall include  providing copies of all
relevant  portions of the  relevant  Returns,  together  with such  accompanying
schedules and work papers, documents relating to rulings or other determinations
by Taxing  Authorities  and records  concerning  the  ownership and Tax bases of
property  as are  relevant  which a party  possesses.  Each  party will make its
employees,  if any,  reasonably  available on a mutually convenient basis at its
cost to provide an  explanation  of any  documents or  information  so provided.
Subject to the preceding sentence,  each party required to file Returns pursuant
to this Agreement will bear all costs attributable to the preparation and filing
of those Returns.  USC will not,  directly or indirectly,  take any action after
the Effective Time that would disqualify the Merger as an exchange under Section
351 of the Code.

     Section 6.03  DIRECTORS.  Effective on the IPO Closing Date, USC will cause
such corporate proceedings as on its part will be necessary to cause each of the
persons who are named in the Private  Placement  Memorandum  as persons who will
become  members of the board of directors of USC following  the  Effective  Time
(other  than any such  person  who,  after  the  date of the  Private  Placement
Memorandum, declines to become a member of that board) to be initially appointed
to that board when the Private Placement Memorandum so provides.

     Section 6.04 REMOVAL OF GUARANTIES.  USC will use its reasonable efforts to
ensure that, within 90 days after the Effective Time, either (i) the Stockholder
Guaranties,  if any, Schedule 6.04 lists are terminated or (ii) the Indebtedness
to which those Guaranties relate is retired;  provided,  however, that if USC is
unable to effect the termination of any of those Guaranties or the retirement of
any of that Indebtedness,  USC will indemnify and hold harmless each Stockholder
from and against any liabilities,  claims,  demands,  judgments,  losses, costs,
damages or  expenses  whatsoever  (including  reasonable  attorneys'  fees) that
Stockholder  may  sustain,  suffer or incur and  result  from or arise out of or
relate to that Guaranty or that Indebtedness, as the case may be.

     Section   6.05   SURVIVAL   OF   REPRESENTATIONS   AND   WARRANTIES.    (a)
Notwithstanding  any investigation at any time made by or on behalf of any party
hereto, the  representations  and warranties set forth in Articles I, II and III
and in any certificate  delivered in connection  herewith with respect to any of
those  representations and warranties will survive the closing and the Effective
Time until the day that is two years from the  Effective  Time,  whereupon  they
will  terminate  and expire,  except as  follows:  (i) the  representations  and
warranties of the Stockholders which relate expressly or by

                                      -37-
<PAGE>
necessary implication to Taxes, ERISA or the Governmental  Requirements referred
to in clause (iii) of Section  7.02(a) will survive until the  expiration of the
applicable  statutes of  limitations  (including  all periods of  extension  and
tolling);  (ii) the  representations  and warranties of the  Stockholders  which
relate expressly or by necessary implication to the environment or Environmental
Laws will survive for a period of four years from the Effective  Time; and (iii)
the  representations  and warranties of the Company will terminate and expire at
the Effective Time.

          (b) After a  representation  and  warranty  has  expired,  as  Section
     6.05(a) provides,  no Damage Claim constituting a USC Indemnified Loss will
     or may be made or prosecuted  through Litigation or otherwise by any Person
     who would have been entitled to Damages on the basis of that representation
     and warranty prior to its termination  and  expiration,  provided that: (i)
     the amount of that claim,  if against any  Stockholder,  will be taken into
     account in determining  whether the aggregate  amount of all claims against
     that  Stockholder  has exceeded  that  Stockholder's  Pro Rata Share of the
     Threshold Amount for purposes of Section 6.06; and (ii) in the case of each
     representation  and warranty that will terminate and expire as this Section
     6.05  provides,  no Damage  Claim  presented  in writing for Damages to the
     Person or Persons from which or whom those  damages are sought on the basis
     of that representation and warranty prior to its termination and expiration
     will be affected in any way by that termination and expiration.

     Section  6.06  LIMITATIONS  ON DAMAGE  CLAIMS.  (a) If USC should  have any
Damage Claim  hereunder  following  the Effective  Time against any  Stockholder
which  does not  involve a USC  Indemnified  Loss (each  such  Damage  Claim not
involving  a USC  Indemnified  Loss  being an "USC  Unindemnified  Loss"),  that
Stockholder will not be liable to USC on account of that USC Unindemnified  Loss
unless the liability of that  Stockholder  in respect of that USC  Unindemnified
Loss, when  aggregated with the liability of all  Stockholders in respect of the
sum of (i) all USC  Unindemnified  Losses  and (ii) all USC  Indemnified  Losses
under Section 7.02(a),  exceeds,  and only to the extent the aggregate amount of
all those USC Unindemnified  Losses and USC Indemnified  Losses does exceed, the
Threshold Amount. In no event will (i) the aggregate joint and several liability
of the Stockholders under this Agreement,  including Section 7.02(a), exceed the
Ceiling Amount or (ii) the aggregate  liability of each  Stockholder  under this
Agreement, including Sections 7.02(a) and 7.02(b), exceed that Stockholder's Pro
Rata Share of the Ceiling Amount.  For purposes of determining the amount of USC
Unindemnified  Losses and USC Indemnified Losses, no effect will be given to any
resulting Tax benefit to USC or any other USC Indemnified Party.

          (b)  If  any  Stockholder  should  have  any  Damage  Claim  hereunder
     following  the  Effective  Time  against  USC  which  does  not  involve  a
     Stockholder  Indemnified  Loss  (each such  Damage  Claim not  involving  a
     Stockholder Indemnified Loss being a "Stockholder Unindemnified Loss"), USC
     will not be liable  to that  Stockholder  on  account  of that  Stockholder
     Unindemnified  Loss  unless  the  liability  of  USC  on  account  of  that
     Stockholder  Unindemnified  Loss, when aggregated with the liability of USC
     in respect of the sum of (i) all Stockholder Unindemnified Losses for which
     it has become liable and (ii) all Stockholder  Indemnified Losses for which
     it has become liable,  exceeds, and only to the extent the aggregate amount
     of all those Stockholder  Unindemnified Losses and Stockholder  Indemnified
     Losses does exceed, the Threshold Amount.

                                      -38-
<PAGE>
     In no event will USC be liable  under  this  Agreement,  including  Section
     7.03,  for any amount in excess of the  Ceiling  Amount.  For  purposes  of
     determining the amount of Stockholder  Unindemnified Losses and Stockholder
     Indemnified Losses, no effect will be given to any resulting Tax benefit to
     any Stockholder Indemnified Party.

          (c)  Neither   any  USC   Unindemnified   Loss  nor  any   Stockholder
     Unindemnified Loss will include any consequential,  exemplary,  punitive or
     treble damage  (including any loss of earnings or profits),  and USC hereby
     releases each  Stockholder,  and each  Stockholder  hereby releases USC, in
     each case to the fullest extent applicable law permits,  from liability for
     any such excluded Damage.

     Section 6.07  WORKING  CAPITAL  ADJUSTMENT.  (a) This Section 6.07 uses the
following terms with the meanings it assigns to them below:

               "Adjustment  Determination  Date"  means the date that is 30 days
          following  delivery  by  USC  of  the  Post-closing  Statement  to the
          Stockholders,   unless  the  Independent   Accountants  determine  any
          Computed  Amount  pursuant  to  Section  6.07(b),  in which  event the
          Adjustment  Determination Date is the date the Independent Accountants
          deliver each determination in writing to USC.

               "Current  Balance Sheet Date Adjusted  Working Capital" means the
          amount by which (i) the Current  Balance  Sheet Date  Working  Capital
          exceeds (ii) the sum of (A) the Current  Balance Sheet Excess Cash and
          (B) the 1998 Restricted Payment Amount.

               "Current Balance Sheet Excess Cash" means, as determined from the
          Current  Balance Sheet,  the amount by which (i) the total amount that
          is included and classified as current assets comprised of unrestricted
          cash and cash  equivalents  on that  balance  sheet  exceeds  (ii) the
          Minimum Cash Balance.

               "Computed  Amount"  means  any of the  following:  (i)  the  Cash
          Balance; (ii) the Final Cash Balance; (iii) the Final Working Capital;
          (iv) the 1999 Permitted  Restricted  Payment Amount;  (v) the Negative
          Net Adjustment; and (vi) the Positive Net Adjustment.

               "Final  Balance  Sheet"  means a  balance  sheet of the  Acquired
          Business as of the effective  date USC uses to record the  Acquisition
          in accordance  with GAAP and which is prepared in accordance with GAAP
          on the same basis on which the Current Balance Sheet was prepared.

               "Final Cash Balance"  means, as determined from the Final Balance
          Sheet,  the total  amount that is included and  classified  as current
          assets  comprised of  unrestricted  cash and cash  equivalents on that
          balance sheet.

                                      -39-
<PAGE>
               "Final  Excess Cash" means the lesser of (i) the Current  Balance
          Sheet Excess Cash or (ii) the amount,  if any, by which the Final Cash
          Balance exceeds the Minimum Cash Balance.

               "Final  Working  Capital"  means,  as  determined  from the Final
          Balance Sheet, the amount by which (i) the sum, without duplication of
          amounts,  of all amounts that are included and  classified  as current
          assets on that balance sheet exceeds, or is exceeded by, (ii) the sum,
          without  duplication of amounts,  of all amounts that are included and
          classified as liabilities or as mandatorily  redeemable  Capital Stock
          on that balance sheet; provided,  that if the Independent  Accountants
          make the  determination  of any  Computed  Amount  pursuant to Section
          6.07(b),  the amount equal to 50% of their fees and expenses which are
          attributable  to their  audit of the  Final  Balance  Sheet  and their
          making  of  that  determination  will be  deemed  a  liability  of the
          Acquired  Business for the purpose of  determining  its Final  Working
          Capital;  and  provided,  further,  that if at any time those  current
          assets are exceeded by those liabilities and that Capital Stock, Final
          Working Capital will be expressed as a negative amount

               "Negative Net Adjustment" means: (i) if the Current Balance Sheet
          Date Adjusted  Working Capital is a positive  amount,  the amount,  if
          any, by which the Current Balance Sheet Date Adjusted  Working Capital
          exceeds the Final  Working  Capital;  and (ii) if the Current  Balance
          Sheet Date Adjusted Working Capital is a negative amount,  the amount,
          if any, by which the Final  Working  Capital is more negative than the
          Current Balance Sheet Date Adjusted Working Capital.

               "1999 Restricted Payment Amount" means, if the Company is subject
          to  Subchapter  S of the Code,  the  amount  equal to the  amount  the
          Company records as income for the period  beginning on January 1, 1999
          and  ending  on  the  day  preceding  the  IPO  Closing  Date  in  its
          accumulated  adjustments  account in  accordance  with the  applicable
          provisions of the Code.

               "Positive Net  Adjustment"  means,  if the Current  Balance Sheet
          Date Adjusted  Working  Capital is (i) a positive amount and the Final
          Working Capital is the same as or greater than that positive amount or
          (ii) a negative amount and the Final Working Capital is the same as or
          less  negative than that  negative  amount,  the lesser of the Current
          Balance Sheet Excess Cash or the Final Excess Cash.

          (b) As soon as  practicable  and in any event within 75 days after the
     Effective  Date,  USC will cause to be prepared in writing and delivered to
     the  Stockholders  (i) the Final  Balance  Sheet and (ii) a statement  (the
     "Post-closing  Statement")  setting forth each Computed  Amount.  The Final
     Balance Sheet and the  Post-closing  Statement will be final and binding on
     USC and the Stockholders  unless,  within 30 days following the delivery of
     the Post-closing  Statement,  any Stockholder  notifies USC in writing that
     that  Stockholder  does not accept as correct  one or more of the  Computed
     Amounts the  Post-closing  Statement sets forth. If any Stockholder  timely
     delivers

                                      -40-
<PAGE>
     that  notice  respecting  the  Post-closing   Statement,   the  Independent
     Accountants  will audit the Final Balance Sheet and determine each Computed
     Amount from that audited balance sheet within 30 days after the delivery to
     USC of that notice, and these  determinations  will be final and binding on
     USC and each  Stockholder.  If a Negative Net Adjustment is determined with
     finality pursuant to this Section 6.07(b),  each Stockholder will, no later
     than 10  Houston,  Texas  business  days after USC makes a written  request
     therefor,  pay in cash that  Stockholder's  Pro Rata Share of that Negative
     Net  Adjustment,  and if a  Positive  Net  Adjustment  is  determined  with
     finality  pursuant  to this  Section  6.07(b),  USC will,  no later than 10
     Houston, Texas business days after that determination,  pay in cash to each
     Stockholder  that  Stockholder's  Pro  Rata  Share  of  that  Positive  Net
     Adjustment, together, in the case of any amount payable by the Stockholders
     or USC pursuant to this Section  6.07(b),  with  interest on that sum at 8%
     per annum from (and  including) the Effective  Date to (but  excluding) the
     Adjustment Determination Date.


                                   ARTICLE VII

                                 INDEMNIFICATION

     Section  7.01  IN  RESPECT  OF  REPRESENTATIONS  AND  WARRANTIES.  After  a
representation and warranty has terminated and expired as Section 6.05 provides,
no  indemnification  will or may be sought  pursuant to this  Article VII on the
basis of that  representation  and  warranty  by any  Person who would have been
entitled  pursuant to this Article VII to  indemnification  on the basis of that
representation  and warranty prior to its termination  and expiration,  provided
that, in the case of each  representation  and warranty that will  terminate and
expire  as  Section   6.05   provides,   no  claim   presented  in  writing  for
indemnification pursuant to this Article VII on the basis of that representation
and warranty prior to its termination and expiration will be affected in any way
by that termination and expiration.

     Section 7.02 INDEMNIFICATION OF USC INDEMNIFIED PARTIES. (a) Subject to the
applicable  provisions of Sections 7.01 and 7.06, the Stockholders  covenant and
agree that they,  jointly and severally,  will  indemnify  each USC  Indemnified
Party against,  and hold each USC Indemnified Party harmless from and in respect
of, all Third Party Claims that arise from,  are based on or relate or otherwise
are attributable to (i) any breach of the  representations and warranties of the
Stockholders  or the  Company set forth  herein  (other than in Article I) or in
certificates  delivered  in  connection  herewith  (other  than  in  respect  of
certificates  relating only to the representations and warranties in Article I),
(ii)  any  nonfulfillment  of any  covenant  or  agreement  on the  part  of the
Stockholders  or the Company under this  Agreement or (iii) any liability  under
the  Securities  Act,  the  Exchange  Act  or  other   applicable   Governmental
Requirement  which  arises  out of or is based on (A) any  untrue  statement  or
alleged  untrue  statement  of a material  fact  relating to the Company and the
Company  Subsidiaries,  or any of them, which is both (1) provided to USC or its
counsel by the Company or the  Stockholders  in writing and (2) contained in any
preliminary  prospectus  relating to the IPO, the Registration  Statement or any
prospectus  forming a part  thereof,  or any  amendment  thereof  or  supplement
thereto,  or (B) any  omission or alleged  omission to state  therein a material
fact  relating  to the Company  and the  Company  Subsidiaries,  or any of them,
required to be stated therein

                                      -41-
<PAGE>
or necessary to make the statements therein not misleading,  and not provided to
USC or its  counsel by the  Company or the  Stockholders  in writing  (each such
Third Party Claim and each Third Party Claim Section 7.02(b)  describes being an
"USC Indemnified Loss").

          (b) Each Stockholder, severally and not jointly with any other Person,
     covenants  and agrees that he will  indemnify  each USC  Indemnified  Party
     against,  and hold each USC Indemnified  Party harmless from and in respect
     of,  all Third  Party  Claims  that arise  from,  are based on or relate or
     otherwise are  attributable  to (i) any breach of the  representations  and
     warranties of that  Stockholder  solely as to that Stockholder set forth in
     Article I or in certificates  delivered by that Stockholder and relating to
     those  representations  and  warranties,  (ii)  any  nonfulfillment  of any
     several,  and  not  joint  and  several,  agreement  on the  part  of  that
     Stockholder   under  this  Agreement  or  (iii)  any  liability  under  the
     Securities  Act,  the  Exchange  Act  or  other   applicable   Governmental
     Requirement  which arises out of or is based on (A) any untrue statement or
     alleged  untrue  statement  of a  material  fact  relating  solely  to that
     Stockholder  which  is both  (1)  provided  to USC or its  counsel  by that
     Stockholder  in writing and (2)  contained  in any  preliminary  prospectus
     relating to the IPO, the Registration Statement or any prospectus forming a
     part thereof,  or any amendment thereof or supplement  thereto,  or (B) any
     omission or alleged  omission  to state  therein a material  fact  relating
     solely to that  Stockholder  required to be stated  therein or necessary to
     make the statements therein not misleading,  and not provided to USC or its
     counsel by that Stockholder in writing.

     Section  7.03  INDEMNIFICATION  OF  STOCKHOLDER  INDEMNIFIED  PARTIES.  USC
covenants and agrees that it will indemnify each Stockholder  Indemnified  Party
against,  and hold  each  Stockholder  Indemnified  Party  harmless  from and in
respect  of, all Third Party  Claims that arise from,  are based on or relate or
otherwise are attributable to (i) any breach by USC of its  representations  and
warranties set forth herein or in its  certificates  delivered to the Company or
the Stockholders in connection herewith, (ii) any nonfulfillment of any covenant
or  agreement  on the part of USC or USC Sub under this  Agreement  or (iii) any
liability  under  the  Securities  Act,  the  Exchange  Act or other  applicable
Governmental  Requirement  which  arises  out of or is based  on (A) any  untrue
statement or alleged untrue  statement of a material fact relating to USC or any
Subsidiary of USC contained in any preliminary  prospectus  relating to the IPO,
the  Registration  Statement or any  prospectus  forming a part thereof,  or any
amendment thereof or supplement thereto, or (B) any omission or alleged omission
to state  therein a  material  fact  relating  to USC or any  Subsidiary  of USC
required to be stated  therein or necessary to make the  statements  therein not
misleading  in the light of the  circumstances  under which they were made (each
such Third Party Claim being a "Stockholder Indemnified Loss").

     Section   7.04   CONDITIONS   OF   INDEMNIFICATION.   (a)  All  claims  for
indemnification  under this  Agreement  shall be asserted  and  resolved as this
Section 7.04 provides.

          (b)  A  party  claiming   indemnification  under  this  Agreement  (an
     "Indemnified  Party")  shall  promptly  (i)  notify  the  party  from  whom
     indemnification  is sought  (the  "Indemnifying  Party") of any Third Party
     Claim  asserted  against the  Indemnified  Party which could give rise to a
     right of  indemnification  under this  Agreement  and (ii)  transmit to the
     Indemnifying Party a written

                                      -42-
<PAGE>
     notice (a "Claim Notice") describing in reasonable detail the nature of the
     Third Party Claim,  a copy of all papers  served with respect to that claim
     (if any), an estimate of the amount of damages  attributable  to that claim
     to the extent  feasible (which estimate will not be conclusive of the final
     amount of that claim) and the basis for the Indemnified Party's request for
     indemnification  under this  Agreement.  Except as Section 7.01 sets forth,
     the  failure  to  promptly  deliver a Claim  Notice  will not  relieve  the
     Indemnifying Party of its obligations to the Indemnified Party with respect
     to the related  Third Party Claim  except to the extent that the  resulting
     delay is  materially  prejudicial  to the defense of that claim.  Within 30
     days  after  receipt  of any Claim  Notice  (the  "Election  Period"),  the
     Indemnifying  Party  must  notify the  Indemnified  Party (i)  whether  the
     Indemnifying  Party  disputes its  potential  liability to the  Indemnified
     Party  under this  Article  VII with  respect to that Third Party Claim and
     (ii) if the Indemnifying Party does not dispute its potential  liability to
     the Indemnified  Party with respect to that Third Party Claim,  whether the
     Indemnifying   Party  desires,   at  the  sole  cost  and  expense  of  the
     Indemnifying  Party,  to defend the  Indemnified  Party  against that Third
     Party Claim.

          (c) If the Indemnifying Party does not dispute its potential liability
     to the  Indemnified  Party and  notifies the  Indemnified  Party within the
     Election Period that the Indemnifying Party elects to assume the defense of
     the Third Party Claim,  then the Indemnifying  Party will have the right to
     defend,  at its sole  cost  and  expense,  that  Third  Party  Claim by all
     appropriate  proceedings,  which  proceedings the  Indemnifying  Party must
     prosecute  diligently to a final  conclusion or settle at its discretion in
     accordance  with this  Section  7.04(c),  and the  Indemnified  Party  will
     furnish the Indemnifying  Party with all information in its possession with
     respect  to that  Third  Party  Claim  and  otherwise  cooperate  with  the
     Indemnifying  Party in the  defense of that Third  Party  Claim;  provided,
     however,  that the  Indemnifying  Party will not enter into any  settlement
     with respect to any Third Party Claim that purports to limit the activities
     of,  or  otherwise  restrict  in any  way,  any  Indemnified  Party  or any
     Affiliate  of any  Indemnified  Party  without  the prior  consent  of that
     Indemnified  Party  (which  consent  may  be  withheld  in  the  reasonable
     discretion of that  Indemnified  Party).  The  Indemnified  Party is hereby
     authorized,  at the sole cost and  expense of the  Indemnifying  Party,  to
     file,  during the Election  Period,  any motion,  answer or other pleadings
     that the  Indemnified  Party deems  necessary or appropriate to protect its
     interests or those of the  Indemnifying  Party.  The Indemnified  Party may
     participate  in, but not control,  any defense or  settlement  of any Third
     Party  Claim the  Indemnifying  Party  controls  pursuant  to this  Section
     7.04(c)  and will bear its own  costs and  expenses  with  respect  to that
     participation;  provided,  however,  that if the named  parties to any such
     action  (including  any impleaded  parties)  include both the  Indemnifying
     Party and the Indemnified Party, and the Indemnified Party has been advised
     by counsel  that there may be one or more legal  defenses  available  to it
     which  are  different  from  or  additional  to  those   available  to  the
     Indemnifying  Party, then the Indemnified Party may employ separate counsel
     at the expense of the Indemnifying Party, and, on its written  notification
     of that  employment,  the  Indemnifying  Party  will not have the  right to
     assume or continue the defense of that action on behalf of the  Indemnified
     Party.

          (d) If the  Indemnifying  Party (i)  within  the  Election  Period (A)
     disputes  its  potential  liability  to the  Indemnified  Party  under this
     Article VII, (B) elects not to defend the

                                      -43-
<PAGE>
          Indemnified  Party pursuant to Section  7.04(c) or (C) fails to notify
     the  Indemnified  Party that the  Indemnifying  Party  elects to defend the
     Indemnified  Party pursuant to Section 7.04(c) or (ii) elects to defend the
     Indemnified  Party pursuant to Section  7.04(c),  but fails  diligently and
     promptly to prosecute or settle the Third Party Claim, then the Indemnified
     Party  will have the right to defend,  at the sole cost and  expense of the
     Indemnifying Party (if the Indemnified Party is entitled to indemnification
     hereunder),  the Third Party Claim by all  appropriate  proceedings,  which
     proceedings the Indemnified Party must promptly and vigorously prosecute to
     a final conclusion or settlement,  provided that the Indemnified Party will
     not  enter  into any such  settlement  without  the  prior  consent  of the
     Indemnifying  Party  (which  consent  may  not  be  unreasonably  withheld)
     (provided that the Indemnifying  Party shall be deemed to have consented to
     that  settlement  if the  Indemnifying  Party has not objected  within five
     Houston,  Texas business days after the Indemnified  Party has provided the
     Indemnifying  Party with a written  notice setting forth the proposed terms
     of the settlement in reasonable  detail).  The Indemnified  Party will have
     full  control  of  such  defense  and  proceedings.   Notwithstanding   the
     foregoing,  if the Indemnifying Party has delivered a written notice to the
     Indemnified  Party to the effect that the  Indemnifying  Party disputes its
     potential  liability to the Indemnified Party under this Article VII and if
     that  dispute  is  resolved  in  favor  of  the  Indemnifying   Party,  the
     Indemnifying  Party will not be required to bear the costs and  expenses of
     the  Indemnified  Party's  defense  pursuant to this Section 7.04 or of the
     Indemnifying  Party's  participation  therein  at the  Indemnified  Party's
     request, and the Indemnified Party will reimburse the Indemnifying Party in
     full  for  all  reasonable  costs  and  expenses  of that  litigation.  The
     Indemnifying  Party may  participate  in, but not  control,  any defense or
     settlement the Indemnified Party controls pursuant to this Section 7.04(d),
     and the  Indemnifying  Party  will  bear its own costs  and  expenses  with
     respect to that participation.

          (e) Payments of all amounts owing by an Indemnifying Party pursuant to
     this  Article  VII  relating  to a Third Party Claim will be made within 30
     days after the latest of (i) the settlement of that Third Party Claim, (ii)
     the  expiration  of the period for appeal of a final  adjudication  of that
     Third  Party  Claim or (iii) the  expiration  of the period for appeal of a
     final adjudication of the Indemnifying Party's liability to the Indemnified
     Party under this Agreement in respect of that Third Party Claim.

          (f) If any Stockholder has any indemnification  obligation to USC that
     becomes  payable under Section 7.04(e) during the Restricted  Period,  that
     Stockholder  may,  with the  written  consent  of USC  (which  shall not be
     unreasonably  withheld)  and  within the  payment  period  Section  7.04(e)
     prescribes,  satisfy that  obligation by transferring to USC such number of
     shares of USC Common Stock owned by that  Stockholder  as have an aggregate
     fair market value that most nearly  approximates,  but does not exceed, the
     amount of that obligation,  provided that each of the following  conditions
     is satisfied:

               (i) USC shall receive good, valid and marketable title to all the
          shares so transferred free of all Liens;

                                      -44-
<PAGE>
               (ii) that Stockholder  shall have made such  representations  and
          warranties  as to the  title  to the  shares  so  transferred  and the
          absence of Liens thereon as USC shall have reasonably requested;

               (iii) the  certificate or  certificates  representing  USC Common
          Stock delivered by that  Stockholder in satisfaction of his obligation
          shall be duly  endorsed  in blank,  or shall be  accompanied  by stock
          powers in blank duly executed,  by that Stockholder and shall have all
          necessary  transfer  tax and other  revenue  stamps,  acquired at that
          Stockholder's expense, affixed and cancelled; and

               (iv) the other terms and conditions of that  transfer,  including
          any  accounting,  legal  or  tax  consequences,  shall  be  reasonably
          satisfactory to USC.

For  purposes of this Section  7.04(f),  the fair market value of a share of USC
Common Stock will be the IPO Price (as adjusted, as appropriate,  to give effect
to each of the following effected after the IPO Closing Date: any subdivision or
combination of outstanding  shares of USC Common Stock,  declaration by USC of a
dividend  payable in shares of USC Common  Stock or  capital  reorganization  or
reclassification or other transaction  involving an increase or reduction in the
number of outstanding shares of USC Common Stock).

     Section 7.05 REMEDIES NOT EXCLUSIVE.  The remedies this Agreement  provides
will not be  exclusive  of any other  rights or remedies  available to one party
against any other party, either at law or in equity.

     Section  7.06  LIMITATIONS  ON  INDEMNIFICATION.  (a)  Notwithstanding  the
provisions of Section  7.02(a),  no Stockholder will be required to indemnify or
hold  harmless  any of  the  USC  Indemnified  Parties  on  account  of any  USC
Indemnified  Loss under Section  7.02(a) unless the liability of the Company and
the  Stockholders in respect of that USC Indemnified  Loss, when aggregated with
the  liability  of all  Stockholders  in  respect  of the  sum  of (i)  all  USC
Unindemnified  Losses and (ii) all USC Indemnified Losses under Section 7.02(a),
exceeds,  and  only  to  the  extent  the  aggregate  amount  of all  those  USC
Unindemnified  Losses and USC  Indemnified  Losses does  exceed,  the  Threshold
Amount.  In no event will (i) the aggregate  joint and several  liability of the
Stockholders under this Agreement, including Section 7.02(a), exceed the Ceiling
Amount or (ii) the aggregate liability of each Stockholder under this Agreement,
including  Sections 7.02(a) and 7.02(b),  at any time exceed the amount by which
(A) that  Stockholder's  Pro Rata Share of the Ceiling  Amount  exceeds (B) that
Stockholder's Accrued Tax Liability at that time. "Accrued Tax Liability" means,
with  respect  to any  Stockholder  at any time,  the total  federal  income tax
liability of that  Stockholder  which is attributable to the capital gain income
that  Stockholder  previously has  recognized,  or will recognize in the taxable
period  including that time, in respect of the  Acquisition  Consideration  that
Stockholder  has received  pursuant to Paragraph 2 and Section  6.07;  provided,
that the capital gain  attributable  to any taxable  disposition of any share of
USC  Common  Stock  which  that  Acquisition   Consideration  includes  will  be
determined for purposes of this definition as if that  Stockholder had sold that
share at the IPO Price (as adjusted, as appropriate, to give effect to each

                                      -45-
<PAGE>
of the  following  effected  after the IPO  Closing  Date:  any  subdivision  or
combination of outstanding  shares of USC Common Stock,  declaration by USC of a
dividend  payable in shares of USC Common  Stock or  capital  reorganization  or
reclassification  of outstanding  shares of USC Common  Stock).  For purposes of
determining the amount any USC  Indemnified  Loss, the gross amount thereof will
be reduced by (i) any  correlative  Tax benefit the applicable  USC  Indemnified
Party actually realizes in the Tax year in which that  determination is made, as
reflected  in any Return that USC  Indemnified  Party files with respect to that
year, and (ii) any correlative insurance proceeds the applicable USC Indemnified
Party  actually  receives,   net  of  any  insurance  premium  (or  increase  in
premium)that becomes due as a result of the claim that results in the payment of
those proceeds.

          (b)  Notwithstanding  the  provisions of Section 7.03, USC will not be
     required to indemnify or hold harmless any of the  Stockholder  Indemnified
     Parties on account of any Stockholder Indemnified Loss unless the liability
     of USC in respect of that  Stockholder  Indemnified  Loss,  when aggregated
     with the  liability  of USC in  respect  of the sum of (i) all  Stockholder
     Unindemnified Losses and (ii) all Stockholder  Indemnified Losses, exceeds,
     and only to the  extent  the  aggregate  amount  of all  those  Stockholder
     Unindemnified  Losses and Stockholder  Indemnified  Losses does exceed, the
     Threshold  Amount.  In no event will USC be liable  under  this  Agreement,
     including Section 7.03, for any amount in excess of the Ceiling Amount. For
     purposes of determining  the amount any Stockholder  Indemnified  Loss, the
     gross amount thereof will be reduced by (i) any correlative Tax benefit the
     applicable Stockholder  Indemnified Party actually realizes in the Tax year
     in which that  determination  is made,  as  reflected  in any  Return  that
     Stockholder Indemnified Party files with respect to that year, and (ii) any
     correlative insurance proceeds the applicable Stockholder Indemnified Party
     actually  receives,  net of any insurance  premium (or increase in premium)
     that  becomes  due as a result of the claim that  results in the payment of
     those proceeds.

                                  ARTICLE VIII

                           LIMITATIONS ON COMPETITION

     Section 8.01 PROHIBITED ACTIVITIES.  Each Stockholder agrees, severally and
not jointly with any other Person, that he will not, during the period beginning
on the date hereof and ending on the fifth  anniversary of the IPO Closing Date,
directly or indirectly,  for any reason,  for his own account or on behalf of or
together with any other Person:

               (i) engage as an  officer,  director  or in any other  managerial
          capacity or as an owner,  co-owner or other investor of or in, whether
          as an employee, independent contractor, consultant or advisor, or as a
          sales  representative,  dealer  or  distributor  of any  kind,  in any
          business selling any products or providing any services in competition
          with the Acquired  Business,  USC or any  Subsidiary of USC (all these
          entities  collectively  being "USC" for purposes of this Article VIII)
          within any Territory surrounding any plant or other operating facility
          in which the  Acquired  Business  was  engaged in business on the date
          hereof or  immediately  prior to the  Effective  Date (for purposes of
          this Article VIII, the "Territory"

                                      -46-

<PAGE>
          surrounding  any plant or other  operating  facility  will be: (A) the
          city, town or village in which that plant or facility is located,  (B)
          the county or parish in which that plant or facility  is located,  (C)
          the counties or parishes  contiguous  to the county or parish in which
          that plant or  facility  is located,  (D) the area  located  within 50
          miles of that plant or facility, (E) the area located within 100 miles
          of that  plant or  facility  and (F) the area in which  that  plant or
          facility  regularly  provides products or services at the locations of
          its customers);

               (ii) call on or  otherwise  solicit any natural  person who is at
          that time employed by USC in any managerial  capacity with the purpose
          or intent of attracting that person from the employ of USC;

               (iii) call on, solicit or perform  services for,  either directly
          or indirectly,  any Person that at that time is, or at any time within
          two  years  prior to that time  was,  a  customer  of USC  within  any
          Territory, (A) for the purpose of soliciting or selling any product or
          service in competition with USC within that Territory and (B) with the
          knowledge of that customer relationship; or

               (iv) call on or otherwise solicit any USC Acquisition  Candidate,
          with  the  knowledge  of that  Entity's  status  as a USC  Acquisition
          Candidate,  for the purpose of acquiring  that Entity or arranging the
          acquisition of that Entity by any Person other than USC.

Notwithstanding  the foregoing,  any  Stockholder  may own and hold as a passive
investment up to 5% of the  outstanding  capital stock of a competing  Entity if
that class of capital stock is listed on a national  stock  exchange or included
in the Nasdaq National Market.

     Section 8.02 DAMAGES.  Because of (i) the difficulty of measuring  economic
losses to USC as a result of any breach by a  Stockholder  of his  covenants  in
Section 8.01 and (ii) the immediate and irreparable  damage that could be caused
to USC for which it would have no other adequate remedy, each Stockholder agrees
that  USC  may  enforce  the  provisions  of  Section  8.01 by  injunctions  and
restraining  orders  against  that  Stockholder  if he  breaches  any  of  those
provisions.

     Section  8.03  REASONABLE  RESTRAINT.  The  parties  hereto each agree that
Sections  8.01 and 8.02 impose a  reasonable  restraint on the  Stockholders  in
light of the  activities  and  business of USC on the date  hereof,  the current
business plans of USC and the investment by each  Stockholder in USC as a result
of the Acquisition.

     Section 8.04 SEVERABILITY;  REFORMATION. The covenants in this Article VIII
are severable and separate, and the unenforceability of any specific covenant in
this Article  VIII is not intended by any party hereto to, and will not,  affect
the  provisions  of any other  covenant in this  Article  VIII.  If any court of
competent   jurisdiction   determines  that  the  scope,   time  or  territorial
restrictions  Section  8.01  sets  forth  are  unreasonable  as  applied  to any
Stockholder,  the parties hereto, including that Stockholder,  acknowledge their
mutual intention and agreement that those restrictions

                                      -47-
<PAGE>
be enforced to the fullest extent the court deems  reasonable,  and thereby will
be  reformed  to that  extent  as  applied  to that  Stockholder  and any  other
Stockholder similarly situated.

     Section 8.05 INDEPENDENT  COVENANT.  All the covenants in this Article VIII
are  intended by each party  hereto to, and will,  be  construed as an agreement
independent of any other provision in this  Agreement,  and the existence of any
claim or cause of action of any Stockholder  against USC, whether  predicated on
this Agreement or otherwise, will not constitute a defense to the enforcement by
USC of any covenant in this Article  VIII.  It is  specifically  agreed that the
time  period  Section  8.01  specifies  will  be  computed  in the  case of each
Stockholder  by  excluding  from that  computation  any time  during  which that
Stockholder is in violation of any provision of Section 8.01. The covenants this
Article VIII contains will not be affected by any breach of any other  provision
hereof by any party hereto.

     Section 8.06 MATERIALITY.  The Company and each Stockholder,  severally and
not jointly  with any other  Person,  hereby  agree that this  Article VIII is a
material and substantial part of the transactions this Agreement contemplates.

                                   ARTICLE IX

               ADDITIONAL DEFINITIONS AND DEFINITIONAL PROVISIONS

     Section 9.01 DEFINED  TERMS.  The following  terms this Agreement uses have
the meanings this Section 9.01 assigns to them.

          "AA Account  Balance"  means as of any date, if the Company is subject
          to the pass-through tax provisions of subchapter S of the Code for any
          period ending on or  immediately  prior to that date,  the amount then
          recorded  in the  accumulated  adjustments  account of the  Company in
          accordance with the applicable provisions of the Code.

          "Acquired Business" has the meaning Paragraph 1 specifies.

          "Acquisition" has the meaning Paragraph 1 specifies.

          "Acquisition Consideration" has the meaning Paragraph 2 specifies.

          "Acquisition Proposal" has the meaning Section 4.04 specifies.

          "Adjustment   Determination   Date"  has  the  meaning   Section  6.07
          specifies.

          "Affiliate"  means, as to any specified Person, any other Person that,
          directly  or  indirectly   through  one  or  more   intermediaries  or
          otherwise,  controls, is controlled by or is under common control with
          the specified Person. As used in this definition,  "control" means the
          possession,  directly or  indirectly,  of the power to direct or cause
          the direction of the

                                      -48-
<PAGE>
          management  or  policies of a Person  (whether  through  ownership  of
          Capital Stock of that Person, by contract or otherwise).

          "Agreement"  means this Agreement,  including all attached  Schedules,
          Annexes,  Addenda  and  Exhibits,  as each of the same may be amended,
          modified or supplemented  from time to time pursuant to the provisions
          hereof or thereof.

          "Capital  Stock"  means,  with  respect to: (i) any  corporation,  any
          share, or any depositary receipt or other certificate representing any
          share, of an equity ownership  interest in that corporation;  and (ii)
          any other Entity, any share,  membership or other percentage interest,
          unit of participation or other equivalent  (however  designated) of an
          equity interest in that Entity.

          "Cash  Compensation"  means,  as applied to any employee,  nonemployee
          director or officer of, or any natural person who performs  consulting
          or other  independent  contractor  services  for,  the  Company or any
          Company Subsidiary,  the wages,  salaries,  bonuses (discretionary and
          formula),  fees and other  cash  compensation  paid or  payable by the
          Company and each Company  Subsidiary to that employee or other natural
          person.

          "Ceiling Amount" has the meaning Paragraph 1 specifies.

          "Certificate of Merger" means, if USC effects the Acquisition by means
          of a Merger, (i) the articles or certificate of merger respecting that
          Merger  which  contains  the  information  required  by  the  laws  of
          Surviving Corporation's  Organization State to effect that Merger and,
          if the  Organization  State of any Entity  merged  into the  Surviving
          Corporation  in that  Merger  is not  the  Organization  State  of the
          Surviving  Corporation,  (ii) the  articles or  certificate  of merger
          respecting that Merger which contains the information  required by the
          laws of that merged Entity's Organization State to effect that Merger.

          "CERCLA" means the Comprehensive Environmental Response, Conservation,
          and Liability Act of 1980.

          "Charter  Documents" means, with respect to any Entity at any time, in
          each case as amended,  modified and supplemented at that time, (i) the
          articles or certificate of formation,  incorporation  or  organization
          (or the equivalent  organizational documents) of that Entity, (ii) the
          bylaws or limited  liability  company agreement or regulations (or the
          equivalent governing documents) of that Entity and (iii) each document
          setting forth the designation, amount and relative rights, limitations
          and preferences of any class or series of that Entity's  Capital Stock
          or of any rights in respect of that Entity's Capital Stock.

          "Claim Notice" has the meaning Section 7.04 specifies.

          "Closing" has the meaning Paragraph 3 specifies.

                                      -49-
<PAGE>
          "Closing Date" has the meaning Paragraph 1 specifies.

          "Closing  Memorandum"  means the  closing  memorandum  attached  as an
          Exhibit to this Agreement.

          "Code" means the Internal Revenue Code of 1986.

          "Company" has the meaning Paragraph 1 specifies.

          "Company Capital Stock" has the meaning Paragraph 1 specifies.

          "Combined Companies" has the meaning Paragraph 1 specifies.

          "Company Commitment" has the meaning Section 2.23 specifies.

          "Company ERISA Benefit Plan" has the meaning Section 2.27 specifies.

          "Company ERISA Pension Plan" has the meaning Section 2.27 specifies.

          "Company Subsidiary" means at any time any Entity that is a Subsidiary
          of the Company at that time.

          "Confidential  Information"  means,  with  respect to any Person,  all
          trade secrets and other  confidential,  nonpublic  and/or  proprietary
          information  of  that  Person,   including  information  derived  from
          reports, investigations,  research, work in progress, codes, marketing
          and sales  programs,  capital  expenditure  projects,  cost summaries,
          pricing   formulae,   contract   analyses,    financial   information,
          projections,  confidential filings with any Governmental Authority and
          all other confidential, nonpublic concepts, methods of doing business,
          ideas,  materials or  information  prepared or performed for, by or on
          behalf of that Person.

          "Current Balance Sheet" has the meaning Paragraph 1 specifies.

          "Current Balance Sheet Date" has the meaning Paragraph 1 specifies.

          "Current Balance Sheet Date Working Capital" has the meaning Paragraph
          1 specifies.

          "Current  Date" means any day during the 20-day  period  ending on the
          Closing Date.

          "Damage" to any  specified  Person  means,  except as Section  6.06(c)
          otherwise  provides,  any cost, damage  (including any  consequential,
          exemplary, punitive or treble damage) or expense (including reasonable
          fees and actual disbursements by attorneys,

                                      -50-
<PAGE>
          consultants,  experts or other  Representatives  and Litigation costs)
          to,  any fine of or  penalty on or any  liability  (including  loss of
          earnings or profits) of any other nature of that Person.

          "Damage  Claim" means,  as asserted (i) against any specified  Person,
          any claim,  demand or Litigation made or pending against the specified
          Person  for  Damages  to any other  Person,  or (ii) by the  specified
          Person,  any claim or demand of the specified Person against any other
          Person for Damages to the specified Person.

          "DGCL" means the General Corporation Law of the State of Delaware.

          "Derivative Securities" of a specified Entity means any Capital Stock,
          debt security or other  Indebtedness  of the  specified  Entity or any
          other Person which is  convertible  into or  exchangeable  for, or any
          option,  warrant or other right to acquire,  (i) any unissued  Capital
          Stock  of the  specified  Entity  or (ii)  any  Capital  Stock  of the
          specified Entity which has been issued and is being held by the Entity
          directly or indirectly as treasury Capital Stock.

          "Effective Time" has the meaning Paragraph 2 specifies.

          "Election Period" has the meaning Section 7.04 specifies.

          "Employee  Policies  and  Procedures"  means at any time all  employee
          manuals and all material  policies,  procedures and work-related rules
          that  apply at that  time to any  employee,  nonemployee  director  or
          officer of, or any other natural person performing consulting or other
          independent  contractor  services  for,  the  Company  or any  Company
          Subsidiary.

          "Employment  Agreement"  means at any time any (i)  agreement to which
          the Company or any Company Subsidiary is a party which then relates to
          the direct or indirect  employment or  engagement,  or arises from the
          past employment or engagement, of any natural person by the Company or
          any Company Subsidiary,  whether as an employee, a nonemployee officer
          or director,  a consultant or other  independent  contractor,  a sales
          representative  or a distributor  of any kind,  including any employee
          leasing or service  agreement and any  noncompetition  agreement,  and
          (ii) agreement  between the Company or any Company  Subsidiary and any
          Person  which arises from the sale of a business by that Person to the
          Company or any Company Subsidiary and limits that Person's competition
          with the Company or any Company Subsidiary.

          "Entity" means any sole  proprietorship,  corporation,  partnership of
          any kind having a separate legal status,  limited  liability  company,
          business trust,  unincorporated  organization  or association,  mutual
          company, joint stock company or joint venture.

          "Environmental  Laws"  means  any  and all  Governmental  Requirements
          relating  to the  environment  or public or worker  health or  safety,
          including ambient air, surface water

                                      -51-
<PAGE>
          (including  water  management and runoff),  land surface or subsurface
          strata, or to emissions,  discharges,  releases or threatened releases
          of  pollutants,   contaminants,  chemicals  or  industrial,  toxic  or
          hazardous  substances or wastes  (including  Solid  Wastes,  Hazardous
          Wastes or  Hazardous  Substances)  or  noxious  noise or odor into the
          environment,  or otherwise  relating to the  manufacture,  processing,
          distribution,  use, treatment,  storage, disposal, recycling, removal,
          transport  or  handling  of  pollutants,  contaminants,  chemicals  or
          industrial,   toxic  or  hazardous  substances  or  wastes  (including
          petroleum,  petroleum  distillates,  asbestos  or  asbestos-containing
          material,  volatile organic compounds,  pesticides and polychlorinated
          biphenyls).

          "ERISA" means the Employee Retirement Income Security Act of 1974.

          "ERISA  Affiliate"  means, with respect to any specified Person at any
          time,  any other  Person,  including  an  Affiliate  of the  specified
          Person,  that is, or at any time  within six years of that time was, a
          member of any ERISA  Group of which the  specified  Person is or was a
          member at the same time.

          "ERISA Affiliate Pension Plan" has the meaning Section 2.27 specifies.

          "ERISA  Employee  Benefit Plan" means any  "employee  benefit plan" as
          defined  in  Section  3(3) of ERISA and  includes  any  ERISA  Pension
          Benefit Plan.

          "ERISA Group" means any "group of organizations" within the meaning of
          Section 414(b),  (c), (m) or (o) of the Code or any "controlled group"
          as defined in Section 4001(a)(14) of ERISA.

          "ERISA  Pension  Benefit  Plan" means any  "employee  pension  benefit
          plan," as defined in Section 3(2) of ERISA, including any plan that is
          covered  by  Title  IV of  ERISA or  subject  to the  minimum  funding
          standards under Section 412 of the Code  (excluding any  Multiemployer
          Plan).

          "Exchange Act" means the Securities Exchange Act of 1934.

          "Final Balance Sheet" has the meaning Section 6.07 specifies.

          "Final  Prospectus"  means the prospectus  USC first  furnishes to the
          Underwriter  after the Registration  Statement becomes effective under
          the Securities Act (whether or not Securities Act Rule 424(b) requires
          USC to file that prospectus with the SEC).

          "Final Working Capital" has the meaning Section 6.07 specifies.

                                      -52-
<PAGE>
          "Financial  Statements" means the Initial Financial Statements and the
          other financial statements of the Acquired Business, if any, delivered
          to USC pursuant to Section 4.09 prior to the Effective Time.

          "Founding   Company"  has  the  meaning  the   Preliminary   Statement
          specifies.

          "GAAP" means, as applied to any of the Financial Statements, generally
          accepted  accounting  principles and practices in the United States as
          in effect  from time to time which (i) have been  concurred  in by the
          Independent  Accountants  and (ii) have been or are applied on a basis
          consistent  (except  for  changes  concurred  in  by  the  Independent
          Accountants)  with  the  most  recent  audited  Financial   Statements
          delivered to USC prior to the Effective Time.

          "Governmental Approval" means at any time any authorization,  consent,
          approval, permit, franchise,  certificate, license, implementing order
          or exemption  of, or  registration  or filing with,  any  Governmental
          Authority,  including  any  certification  or  licensing  of a natural
          person to  engage in a  profession  or trade or a  specific  regulated
          activity, at that time.

          "Governmental  Authority"  means  (i)  any  national,  state,  county,
          municipal  or other  government,  domestic or foreign,  or any agency,
          board, bureau, commission,  court, department or other instrumentality
          of any such government,  or (ii) any Person having the authority under
          any  applicable  Governmental  Requirement to assess and collect Taxes
          for its own account.

          "Governmental  Requirement"  means at any  time (i) any law,  statute,
          code,   ordinance,   order,  rule,   regulation,   judgment,   decree,
          injunction,  writ, edict, award, authorization or other requirement of
          any  Governmental  Authority  in  effect  at that  time  or  (ii)  any
          obligation  included  in any  certificate,  certification,  franchise,
          permit or license  issued by any  Governmental  Authority or resulting
          from binding arbitration,  including any requirement under common law,
          at that time.

          "Guaranty" means, for any specified Person,  without duplication,  any
          liability,  contingent or otherwise,  of that Person  guaranteeing  or
          otherwise  becoming liable for any obligation of any other Person (the
          "primary obligor") in any manner, whether directly or indirectly,  and
          including any liability of the specified  Person,  direct or indirect,
          (i) to purchase or pay (or advance or supply funds for the purchase or
          payment of) that  obligation  or to purchase  (or to advance or supply
          funds  for the  purchase  of) any  security  for the  payment  of that
          obligation, (ii) to purchase property,  securities or services for the
          purpose of  assuring  the owner of that  obligation  of its payment or
          (iii) to maintain working  capital,  equity capital or other financial
          statement  condition  or  liquidity  of the  primary  obligor so as to
          enable the primary obligor to pay that obligation;  provided, that the
          term  "Guaranty"  does not  include  endorsements  for  collection  or
          deposit in the ordinary course of the endorser's business.

                                      -53-
<PAGE>
          "HSR Act" means the  Hart-Scott-Rodino  Antitrust  Improvements Act of
          1976.

          "Immediate  Family Member" of a Stockholder  means at any time: (i) if
          that  Stockholder  is a natural  person,  any child or grandchild  (by
          blood or legal  adoption) or spouse of that  Stockholder at that time,
          or any child of that spouse; and (ii) if that Stockholder is an Entity
          whose  ultimate  beneficial  owner is a natural  person,  or a natural
          person  and his  spouse,  any child or  grandchild  (by blood or legal
          adoption)  or spouse at that time (if not then an ultimate  beneficial
          owner of that  Entity),  or any child of that spouse,  of the ultimate
          beneficial owner or owners.

          "Indebtedness"  of any  Person  means,  without  duplication,  (i) any
          liability of that Person (A) for borrowed  money or arising out of any
          extension  of credit to or for the account of that  Person  (including
          reimbursement  or payment  obligations  with respect to surety  bonds,
          letters of credit, bankers' acceptances and similar instruments),  for
          the deferred  purchase  price of property or services or arising under
          conditional sale or other title retention agreements, other than trade
          payables arising in the ordinary course of business,  (B) evidenced by
          notes,  bonds,  debentures or similar  instruments,  (C) in respect of
          leases (or other agreements conveying the right to use) property which
          GAAP  as in  effect  on the  date  of this  Agreement  requires  to be
          classified  and accounted  for as capital  leases or (D) in respect of
          interest rate swap, cap or collar  agreements or similar  arrangements
          providing  for the  mitigation  of that  Person's  interest rate risks
          either generally or under specific  contingencies  between that Person
          and any other Person,  (ii) any liability secured by any Lien upon any
          property  or assets of that  Person (or upon any  revenues,  income or
          profits of that  Person  therefrom),  whether  or not that  Person has
          assumed  that  liability or  otherwise  become  liable for the payment
          thereof,  (iii) any  liability of others of the type  described in the
          preceding  clause  (i) or (ii) in  respect  of which  that  Person has
          incurred, assumed or acquired a liability by means of a Guaranty.

          "Indemnified Party" has the meaning Section 7.04 specifies.

          "Indemnifying Party" has the meaning Section 7.04 specifies.

          "Indemnity Notice" has the meaning Section 7.04 specifies.

          "Independent Accountants" means Arthur Andersen LLP.

          "Industry"  means the industry  involving the  production  and sale of
          ready-mixed concrete (including truck-mixed concrete) and other cement
          mixtures and pre-cast  concrete  products and any logical extension of
          or business activity reasonably related to any of the foregoing.

          "Industry Laws" means any and all Governmental  Requirements  relating
          to the licensing or other regulation of the Industry,  including:  the
          Clean Air Act, 42 USC ss.ss.

                                      -54-
<PAGE>
          401-7671q;  the Clean Water Act, 33 USC ss.ss. 1251- 1387; regulations
          of   the   Environmental   Protection   Agency,   40   C.F.R.   ss.ss.
          82.150-82.166;  and state statutes  governing  licensure of facilities
          that operate in the Industry.

          "Information"   means   written   information,   including  (i)  data,
          certificates,  reports and statements (excluding Financial Statements)
          and (ii) summaries of unwritten agreements,  arrangements,  contracts,
          plans,  policies,  programs or practices or of unwritten amendments or
          modifications of, supplements to or waivers under any of the foregoing
          documents.

          "IPO"  means the first  time a  registration  statement  USC has filed
          under  the  Securities  Act  and  respecting  a  primary  underwritten
          offering  by USC to the public of shares of USC Common  Stock  becomes
          effective under the Securities Act and USC issues and sells any of the
          shares registered by that registration statement to the Underwriter.

          "IPO Closing Date" means the date on which USC first receives  payment
          for the shares of USC Common Stock it sells to the  Underwriter in the
          IPO.

          "IPO  Price"  means the price per share of USC Common  Stock which the
          cover  page of the  Final  Prospectus  sets  forth  as the  "price  to
          public."

          "IPO  Pricing  Date"  means  the  date,  if any,  on which USC and the
          Underwriter agree in the Underwriting Agreement to the price per share
          of USC Common Stock at which the Underwriter, subject to the terms and
          conditions of the Underwriting  Agreement,  will purchase newly issued
          shares of USC Common Stock from USC on the IPO Closing Date.

          "IRCA" means the Immigration Reform and Control Act of 1986.

          "IRS" means the Internal Revenue Service.

          "Lien" means,  with respect to any property or asset of any Person (or
          any  revenues,  income or profits of that Person  therefrom)  (in each
          case  whether the same is  consensual  or  nonconsensual  or arises by
          contract,  operation  of law,  legal  process or  otherwise),  (i) any
          mortgage, lien, security interest, pledge,  attachment,  levy or other
          charge or encumbrance  of any kind thereupon or in respect  thereof or
          (ii) any  other  arrangement  under  which  the  same is  transferred,
          sequestered or otherwise  identified  with the intention of subjecting
          the same to,  or  making  the  same  available  for,  the  payment  or
          performance  of  any  liability  in  priority  to the  payment  of the
          ordinary,  unsecured creditors of that Person,  including any "adverse
          claim" (as Section 8-302(b) of each applicable Uniform Commercial Code
          defines that term) in the case of any Capital  Stock.  For purposes of
          this  Agreement,  a Person will be deemed to own subject to a Lien any
          asset  that it has  acquired  or holds  subject to the  interest  of a
          vendor or lessor under any conditional  sale agreement,  capital lease
          or other title retention agreement relating to that asset.

                                      -55-
<PAGE>
          "Litigation" means any action,  case,  proceeding,  claim,  grievance,
          suit or  investigation  or other  proceeding  conducted  by or pending
          before any Governmental Authority or any arbitration proceeding.

          "Material"  means, as applied to any Entity or the Acquired  Business,
          material to the business, operations, property or assets, liabilities,
          financial  condition or results of  operations  of that Entity and its
          Subsidiaries  considered as a whole or the Acquired  Business,  as the
          case may be.

          "Material  Adverse Effect" means,  with respect to the consequences of
          any fact or circumstance  (including the occurrence or  non-occurrence
          of any event) to the Acquired Business, that such fact or circumstance
          has  caused,  is  causing  or  will  cause,  directly,  indirectly  or
          consequentially,  singly  or in the  aggregate  with  other  facts and
          circumstances, any Damages in excess of the Threshold Amount; provided
          that the foregoing  shall not include the  consequences of any fact or
          circumstance  attributable  to  (i)  factors  affecting  the  Industry
          generally,  (ii)  general  national,  regional  or local  economic  or
          financial  conditions or (iii) changes in  governmental or legislative
          laws, rules or regulation.

          "Material Agreement" of any Entity means any contract or agreement (i)
          to which  that  Entity or any of its  Subsidiaries  is a party,  or by
          which that Entity or any of its  Subsidiaries is bound or to which any
          property  or  assets  of that  Entity  or any of its  Subsidiaries  is
          subject and (ii) which is Material to that Entity.

          "Merger" has the meaning the Preliminary Statement specifies.

          "Minimum Cash Amount" has the meaning Section 5.01 specifies .

          "Minimum Cash Balance" has the meaning Paragraph 1 specifies.

          "Moody's" means Moody's Investors Service, Inc.

          "Multiemployer  Plan"  means a  "multiemployer  plan"  as  defined  in
          Section 4001(a)(3) of ERISA,  Section 414 of the Code or Section 3(37)
          of ERISA.

          "Negative Net Adjustment" has the meaning Section 6.07 specifies.

          "Organization  State" means,  as applied to (i) any  corporation,  its
          state  or  other  jurisdiction  of  incorporation,  (ii)  any  limited
          liability  company  or  limited   partnership,   the  state  or  other
          jurisdiction under whose laws it is formed,  organized and existing in
          that  legal  form,  and  (iii) any  other  Entity,  the state or other
          jurisdiction whose laws govern that Entity's internal affairs.

          "Other   Agreements"  has  the  meaning  the   Preliminary   Statement
          specifies.

                                      -56-
<PAGE>
          "Other  Compensation Plan" means any compensation  arrangement,  plan,
          policy,  practice or program  established,  maintained or sponsored by
          the Company or any Company Subsidiary,  or to which the Company or any
          Company  Subsidiary  contributes,  on behalf of any of its  employees,
          nonemployee  directors or officers or other natural persons performing
          consulting or other independent contractor services for the Company or
          any Company  Subsidiary,  (i) including all such arrangements,  plans,
          policies,  practices or programs providing for severance pay, deferred
          compensation,  incentive, bonus or performance awards or the actual or
          phantom ownership of any Capital Stock or Derivative Securities of the
          Company or any  Company  Subsidiary,  but (ii)  excluding  all Company
          ERISA Pension Plans and Employment Agreements.

          "Other Financing Sources" has the meaning Section 5.01 specifies.

          "Other  Founding  Company" has the meaning the  Preliminary  Statement
          specifies.

          "Other Transaction Documents" means the Other Agreements and the other
          written  agreements,  documents,  instruments and  certificates at any
          time executed  pursuant to or in connection with the Other  Agreements
          (other than the Transaction Documents and the Underwriting Agreement),
          all as amended, modified or supplemented from time to time.

          "PBGC" means the Pension Benefit Guaranty Corporation.

          "Permitted  Investments"  means:  (i) at the time of purchase or other
          acquisition by the Company or any Company Subsidiary,  (A) obligations
          issued or  guaranteed by the United States of America with a remaining
          maturity not exceeding one year, (B) commercial  paper with maturities
          of not more than 270 days and a published  rating of not less than A-1
          by S&P or P-1 by Moody's and (C)  certificates of deposit and bankers'
          acceptances  having  maturities  of not  more  than  one  year  of any
          commercial bank or trust company if (1) that bank or trust company has
          a combined  capital and surplus of at least  $500,000,000  and (2) its
          unsecured long-term debt obligations, or those of a holding company of
          which it is a  subsidiary,  are rated not less than A- by S&P or A3 by
          Moody's;  and (ii) other  extensions  of credit made by the Company or
          any Company  Subsidiary to its retail customers in the ordinary course
          of its business and consistent with its past practices.

          "Permitted  Liens" means,  as applied to the property or assets of any
          Person (or any revenues,  income or profits of that Person therefrom):
          (i)  Liens  for  Taxes  if  the  same  are  not at the  time  due  and
          delinquent; (ii) Liens of carriers, warehousemen,  mechanics, laborers
          and  materialmen  for sums not yet due;  (iii)  Liens  incurred in the
          ordinary course of that Person's  business in connection with worker's
          compensation,   unemployment   insurance  and  other  social  security
          legislation  (other than  pursuant  to ERISA or Section  412(n) of the
          Code);  (iv) Liens  incurred in the ordinary  course of that  Person's
          business  in  connection  with  deposit  accounts  or  to  secure  the
          performance of bids, tenders, trade contracts,  statutory obligations,
          surety and appeal bonds,  performance  and  return-of-money  bonds and
          other obligations of

                                      -57-
<PAGE>
          like nature; (v) easements, rights-of-way,  reservations, restrictions
          and other similar encumbrances incurred in the ordinary course of that
          Person's   business  or  existing  on  property  and  not   materially
          interfering with the ordinary conduct of that Person's business or the
          use of that property;  (vi) defects or irregularities in that Person's
          title to its real properties  which do not materially (A) diminish the
          value of the surface estate or (B) interfere with the ordinary conduct
          of that Person's business or the use of any of such properties;  (vii)
          any  interest  or title of a lessor of assets  that  Person is leasing
          pursuant to any capital  lease  Schedule 2.18 lists or any lease that,
          pursuant to GAAP,  would be accounted for as an operating  lease;  and
          (viii) Liens  securing  purchase money  Indebtedness  Schedule 2.17 or
          2.18 lists,  so long as those  Liens do not attach to any  property or
          assets other than the properties or assets purchased with the proceeds
          of that Indebtedness.

          "Person" means any natural person,  Entity,  estate,  trust,  union or
          employee organization or Governmental Authority or, for the purpose of
          the definition of "ERISA Affiliate," any trade or business.

          "Plan" has the meaning Section 2.28 specifies.

          "Pre-Acquisition Claims" has the meaning Section 10.12 specifies.

          "Positive Net Adjustment" has the meaning Section 6.07 specifies.

          "Pre-Acquisition Matters" has the meaning Section 10.12 specifies.

          "Private Placement  Memorandum" means the Private Placement Memorandum
          of USC dated  March 20,  1999 and  relating to the offer of USC Common
          Stock in connection with the Acquisition.

          "Prohibited  Transaction" means any transaction either Section 4975 of
          the Code or Section 406 of ERISA prohibits and neither Section 4975 of
          the Code nor Section 408 of ERISA exempts.

          "Proprietary  Rights" means (i) patents,  applications for patents and
          patent rights, (ii) in each case, whether registered,  unregistered or
          under pending registration,  trademark rights, trade names, trade name
          rights,  corporate  names,  business  names,  trade  styles  or dress,
          service marks and logos and other trade  designations  and  copyrights
          and, in the case of the Company or any Company  Subsidiary,  (iii) all
          agreements  relating to the technology,  know-how or processes used in
          any business of the Company or any Company Subsidiary.

          "Pro Rata Share" has the meaning Paragraph 1 specifies.

          "Qualified Plans" has the meaning Section 2.28 specifies.

                                      -58-
<PAGE>
          "RCRA" means the Resource Conservation and Recovery Act of 1976.

          "Registration   Rights   Agreement"  means  the  registration   rights
          agreement to be executed  and  delivered at the Closing by USC and the
          Stockholders  electing  to be  parties  thereto  in the  form  thereof
          attached as Exhibit 9.01, with the blanks appropriately filled.

          "Registration  Statement" means the registration statement,  including
          (i) each preliminary prospectus it contains prior to the date on which
          it  becomes   effective   under  the  Securities  Act  (including  any
          prospectus  USC files with the SEC  pursuant  to  Securities  Act Rule
          424(b)),  (ii) the Final  Prospectus and (iii) any amendments  thereof
          and all  supplements and exhibits  thereto,  USC files with the SEC to
          register  shares of USC  Common  Stock  under the  Securities  Act for
          public offering and sale in the IPO.

          "Related  Party  Agreement"  means any  contract  or other  agreement,
          written or oral, (i) to which the Company or any Company Subsidiary is
          a party or is bound or by which any  property  of the  Company  or any
          Company  Subsidiary  is bound or may be subject  and (ii) (A) to which
          any  Stockholder  or any of  that  Stockholder's  Related  Persons  or
          Affiliates  (other  than any other  Entity  included  in the  Acquired
          Business) also is a party, (B) of which any Stockholder or any of that
          Stockholder's  Related  Persons or  Affiliates  (other  than any other
          Entity  included in the Acquired  Business) is a beneficiary or (C) as
          to  which  any  transaction  contemplated  thereby  properly  would be
          characterized  (without  regard to the amount  involved)  as a related
          party transaction for purposes of applying the disclosure requirements
          of GAAP or the  SEC  applicable  to the  financial  statements  of the
          Acquired Business which the Registration Statement includes.

          "Related Person" of a Stockholder  means: (i) if that Stockholder is a
          natural person,  (A) any Immediate Family Member of that  Stockholder,
          (B) any Estate of that  Stockholder or any Immediate  Family Member of
          that  Stockholder,  (C) the trustee of any inter vivos or testamentary
          trust of which  all the  beneficiaries  are  Related  Persons  of that
          Stockholder  and (D) any Entity the entire equity interest in which is
          owned by any one or more of that  Stockholder  and Related  Persons of
          that Stockholder; and (ii) if that Stockholder is an Entity, Estate or
          trust,  (A) any Person who owns an equity interest in that Stockholder
          on the date hereof, (B) any Person who would be a Related Person under
          clause (i) of this  definition of a natural  person who is an ultimate
          beneficial  owner of that  Stockholder  or (C) any  other  Entity  the
          entire  equity  interest  in which is owned by any one or more of that
          Stockholder  and  Related  Persons  of  that   Stockholder.   In  this
          definition,  "Estate"  means, as to any natural person who has died or
          been  adjudicated   mentally  incompetent  by  a  court  of  competent
          jurisdiction,  (i) that  person's  estate  or (ii) the  administrator,
          conservator, executor, guardian or representative of that estate.

          "Reportable  Event"  means,  with respect to any Company ERISA Pension
          Plan,  (i) the  occurrence  of any of the  events set forth in Section
          4043(b)  or (c)  (other  than  a  Reportable  Event  as to  which  the
          provision of 30 days' notice to the PBGC is waived under

                                      -59-
<PAGE>
          applicable  regulations),  4062(e) or 4063(a) of ERISA with respect to
          that plan, (ii) any event requiring the Company or any ERISA Affiliate
          to provide security to that plan under Section  401(a)(29) of the Code
          or (iii)  any  failure  to make a payment  Section  412(m) of the Code
          requires with respect to that plan.

          "Representatives"  means,  with respect to any Person,  the directors,
          officers,  employees,  Affiliates,  accountants (including independent
          certified public  accountants),  advisors,  attorneys,  consultants or
          other  agents of that  Person,  or any other  representatives  of that
          Person or of any of those directors, officers, employees,  Affiliates,
          accountants  (including  independent  certified  public  accountants),
          advisors, attorneys, consultants or other agents.

          "Restricted  Payment"  means,  with respect to any Entity at any time,
          any of the  following  that Entity  effects:  (i) any  declaration  or
          payment of any dividend or other distribution,  direct or indirect, on
          account of any Capital  Stock of that Entity or any  Affiliate of that
          Entity; (ii) any direct or indirect redemption,  retirement,  purchase
          or other acquisition for value of, or any direct or indirect purchase,
          payment  or  sinking  fund or  similar  deposit  for  the  redemption,
          retirement,  purchase or other  acquisition for value of, or to obtain
          the surrender of, any then outstanding Capital Stock of that Entity or
          any Affiliate of that Entity or any then outstanding warrants, options
          or other  rights to acquire or subscribe  for or purchase  unissued or
          treasury Capital Stock of that Entity or any Affiliate of that Entity;
          or (iii) any payment or  distribution  of, or any commitment to pay or
          distribute,  any cash or other  property if, for purposes of the Code,
          that payment or  distribution  would (or reasonably  could be expected
          to) constitute a constructive dividend to any Stockholder.

          "Restricted Period" has the meaning Section 10.14 specifies.

          "Returns"  of a  Person  means  the  returns,  reports  or  statements
          (including  any  information  returns)  any  Governmental  Requirement
          requires that Person to file for purposes of any Tax.

          "SEC" means the Securities and Exchange Commission.

          "Securities Act" means the Securities Act of 1933.

          "Solid  Wastes,  Hazardous  Wastes or Hazardous  Substances"  have the
          meanings  ascribed  to  those  terms  in  CERCLA,  RCRA  or any  other
          Environmental  Law  applicable  to the business or  operations  of the
          Company or any Company  Subsidiary  which imparts a broader meaning to
          any of those terms than does CERCLA or RCRA.

          "S&P" means Standard and Poor's Rating Services.

                                             -60-
<PAGE>
          "Stockholder Indemnified Party" means (i) each Stockholder and each of
          that  Stockholder's  Affiliates  (other than the  Company,  any of the
          other  Combined  Companies,  if any, or any  Subsidiary  of any of the
          Combined  Companies,  if any, or,  following the Effective  Time,  the
          Surviving  Corporation  or USC or  any  of  its  Subsidiaries,  if the
          Stockholder is an Affiliate of USC), agents and counsel and (ii) prior
          to  the  Effective  Time,  the  Company  and  each  of  its  officers,
          directors,  employees,  agents  and  counsel  who are not  Stockholder
          Indemnified   Parties  within  the  meaning  of  clause  (i)  of  this
          definition.

          "Stockholder Indemnified Loss" has the meaning Section 7.03 specifies.

          "Stockholder   Unindemnified   Loss"  has  the  meaning  Section  6.06
          specifies.

          "Subsidiary" of any specified  Person at any time,  means any Entity a
          majority  of the  Capital  Stock  of which  is at that  time  owned or
          controlled, directly or indirectly, by the specified Person.

          "Supplemental Information" has the meaning Section 4.07 specifies.

          "Tax" or "Taxes" means all net or gross income,  gross  receipts,  net
          proceeds, sales, use, ad valorem, value added, franchise, bank shares,
          withholding,  payroll,  employment,  excise,  property,  deed,  stamp,
          alternative  or  add-on   minimum,   environmental   or  other  taxes,
          assessments,  duties,  fees, levies or other  governmental  charges or
          assessments  of  any  nature  whatever  imposed  by  any  Governmental
          Requirement,  whether  disputed or not,  together  with any  interest,
          penalties,  additions  to  tax  or  additional  amounts  with  respect
          thereto.

          "Taxing   Authority"  means  any  Governmental   Authority  having  or
          purporting to exercise jurisdiction with respect to any Tax.

          "Termination Date" has the meaning Paragraph 1 specifies.

          "Termination  Event" means,  with respect to any Company ERISA Pension
          Plan,  (i) any  Reportable  Event  with  respect to that plan which is
          likely to result in the termination of that plan, (ii) the termination
          of, or the filing of a notice of intent to terminate, that plan or the
          treatment of any amendment to that plan as a termination under Section
          4041(c) of ERISA or (iii) the institution of proceedings to terminate,
          or the appointment of a trustee to administer, that plan under Section
          4042 of ERISA.

          "Third Party Claim" means any claim asserted by any Person that or who
          is not a party to this Agreement against any Indemnified Party.

          "Threshold Amount" means 1% of the Ceiling Amount.


                                      -61-
<PAGE>
          "Transaction  Document"  means this  Agreement,  the  Certificates  of
          Merger,  the  Registration  Rights  Agreement  and the  other  written
          agreements,  documents, instruments and certificates executed pursuant
          to  or in  connection  with  this  Agreement  (other  than  the  Other
          Transaction Documents and the Underwriting Agreement), including those
          Article V specifies are to be delivered at or before the Closing,  all
          as amended, modified or supplemented from time to time.

          "Transfer Taxes" has the meaning Section 10.05 specifies.

          "Underwriter" means collectively (i) the investment banking firms that
          prospectively may enter into the Underwriting  Agreement and (ii) from
          and after the IPO Pricing Date, the  investment  banking firms parties
          to the Underwriting Agreement.

          "Underwriting   Agreement"  has  the  meaning   Section   5.01(a)(iii)
          specifies.

          "USC  Acquisition  Candidate"  means any Entity (i) which the Acquired
          Business  or any  Entity the  Acquired  Business  includes  or USC has
          called on in connection  with the possible  acquisition by any of them
          of that  Entity or (ii) of which  any of them has made an  acquisition
          analysis,  in any case where  such  Entity is engaged in any aspect of
          the Industry.

          "USC Common Stock" means the common stock,  par value $.001 per share,
          of USC.

          "USC Indemnified Loss" has the meaning Section 7.02 specifies.

          "USC Indemnified Party" means USC and its Affiliates and each of their
          respective  officers,   directors,   employees,  agents  and  counsel;
          provided,  however,  that no Person who  indemnifies  USC  Indemnified
          Parties in this  Agreement in his capacity as a Stockholder  will be a
          USC Indemnified Party for purposes of this Agreement,  notwithstanding
          that the Person is a USC Indemnified Party for purposes of one or more
          of the Other Agreements.

          "USC Sub Common Stock" has the meaning Paragraph 1 specifies.

          "USC Unindemnified Loss" has the meaning Section 6.06 specifies.

          "Welfare Plan" means an "employee  welfare benefit plan" as defined in
          Section 3(1) of ERISA.

          "Wholly Owned Subsidiary" means any corporation or other Entity all of
          whose  outstanding  Capital Stock on a fully diluted basis the Company
          owns and controls, directly or indirectly through another Wholly Owned
          Subsidiary.

          "Working Capital Adjustment" has the meaning Section 6.07 specifies.

                                      -62-
<PAGE>
     Section 9.02 OTHER DEFINED TERMs.  Words and terms these Uniform Provisions
use which are defined  elsewhere  in this  Agreement  are used herein as therein
defined.

     Section 9.03 OTHER  DEFINITIONAL  PROVISIONS.  (a) Except as this Agreement
otherwise  specifies,  all  references  herein to any  Governmental  Requirement
defined or referred to herein,  including the Code, CERCLA,  ERISA, the Exchange
Act,  RCRA  and  the  Securities  Act,  are  references  to  that   Governmental
Requirement or any successor Governmental Requirement, as the same may have been
amended  or  supplemented  from  time to  time,  and any  rules  or  regulations
promulgated thereunder.

          (b) This Agreement uses the words  "herein,"  "hereof" and "hereunder"
     and words of similar  import to refer to this  Agreement as a whole and not
     to any provision of this Agreement,  and the words "Article,"  "Paragraph,"
     "Section,"  "Preliminary  Statement," "Annex,"  "Addendum,"  "Schedule" and
     "Exhibit"  refer to Articles,  Paragraphs and Sections of, the  Preliminary
     Statement  in, and  Annexes,  Addenda,  Schedules  and  Exhibits  to,  this
     Agreement unless it otherwise specifies.

          (c) Whenever the context so requires, the singular number includes the
     plural and vice versa,  and a reference  to one gender  includes  the other
     gender and the neuter.

          (d) The word  "including"  (and, with  correlative  meaning,  the word
     "include")  means  including,   without  limiting  the  generality  of  any
     description  preceding such word, and the words "shall" and "will" are used
     interchangeably and have the same meaning.

          (e) The phrase  "to the  knowledge  of the  Company"  or phrases  with
     similar wording,  when used in this Agreement to qualify any representation
     or warranty  Article II contains,  means the  collective  knowledge,  after
     reasonable  investigation,  of each  Stockholder  and each other Person who
     holds a  management  position  with  the  Company  as of the  date  hereof;
     provided,  however, that if any Governmental Requirement referred to in any
     such  representation  or warranty  specifies  a different  meaning for that
     phrase, the meaning that Governmental  Requirement specifies will apply for
     purposes of that representation and warranty.

     Section  9.04  CAPTIONS.  This  Agreement  includes  captions to  Articles,
Paragraphs,  Sections and  subsections of, and Annexes,  Addenda,  Schedules and
Exhibits to, this Agreement or any other Transaction Document for convenience of
reference only, and these captions do not constitute a part of this Agreement or
any other  Transaction  Document for any other  purpose or in any way affect the
meaning  or  construction  of any  provision  of  this  Agreement  or any  other
Transaction Document.

                                      -63-
<PAGE>
                                    ARTICLE X

                               GENERAL PROVISIONS

     Section  10.01  TREATMENT  OF  CONFIDENTIAL  INFORMATION.  (a)  Each of the
Company and the  Stockholders,  severally and not jointly with any other Person,
acknowledges  that it has or may have had in the past,  currently has and in the
future  may have  access to  Confidential  Information  of the  Company  and the
Company  Subsidiaries,  the Other Founding  Companies and their Subsidiaries and
USC and its Subsidiaries.  Each of the Company and the  Stockholders,  severally
and not jointly with any other Person, agrees that it will keep confidential all
that  Confidential  Information  furnished  to it and,  except with the specific
prior written consent of USC, will not disclose that Confidential Information to
any Person except (i)  Representatives of USC and (ii) its own  Representatives,
provided  that  these   Representatives   (other  than  counsel)  agree  to  the
confidentiality  provisions of this Section 10.01; provided,  however, that, for
purpose of this Section 10.01(a), Confidential Information does not include such
information as (i) becomes known to the public generally through no fault of any
Stockholder,  (ii)  is  required  to be  disclosed  by law or the  order  of any
Governmental  Authority under color of law,  provided,  that prior to disclosing
any information  pursuant to this clause (ii), each  Stockholder will give prior
written  notice  thereof to USC and provide USC with the  opportunity to contest
that disclosure,  or (iii) the disclosing party reasonably  believes is required
to be  disclosed  in  connection  with the  defense  of a  lawsuit  against  the
disclosing  party.  In  the  event  of a  breach  or  threatened  breach  by any
Stockholder  of the  provisions  of  this  Section  10.01  with  respect  to any
Confidential Information, USC will be entitled to an injunction restraining that
Stockholder from disclosing, in whole or in part, that Confidential Information.
Nothing  herein shall be construed as  prohibiting  USC from  pursuing any other
available remedy for such breach or threatened breach, including the recovery of
damages.

          (b) Because of (i) the  difficulty of measuring  economic  losses as a
     result of the breach of the  foregoing  covenants  in Section  10.01(a) and
     (ii) the immediate and  irreparable  damage that would be caused to USC for
     which it would have no other adequate  remedy,  each of the Company and the
     Stockholders agrees that USC may enforce the provisions of Section 10.01(a)
     by injunctions and restraining orders against each of them who breaches any
     of those provisions.

          (c)  USC  acknowledges  that  it  has  or may  have  had in the  past,
     currently has and in the future may have access to Confidential Information
     of the Company and the Company  Subsidiaries.  USC agrees  that,  until the
     Effective Time, it will keep confidential all that Confidential Information
     furnished to it and,  except with the specific prior written consent of the
     Company,  will not disclose  that  Confidential  Information  to any Person
     prior  to the  Effective  Time  except  as  Section  4.01(a)  contemplates;
     provided,   however,   that,   for  purposes  of  this  Section   10.01(c),
     Confidential  Information  does not include such information as (i) becomes
     known to the public generally  through no fault of USC, (ii) is required to
     be disclosed by law or the order of any Governmental  Authority under color
     of law, provided, that prior to disclosing any information pursuant to this
     clause (ii),  USC will, if possible,  give prior written  notice thereof to
     the Company and provide the Company  with the  opportunity  to contest that
     disclosure, or (iii) USC reasonably

                                      -64-
<PAGE>
     believes is required to be  disclosed in  connection  with the defense of a
     lawsuit against it. In the event of a breach or threatened breach by USC of
     the  provisions  of this  Section  10.01 with  respect to any  Confidential
     Information,  the Company will be entitled to an injunction restraining USC
     from  disclosing,  in  whole  or in part,  that  Confidential  Information.
     Nothing herein shall be construed as prohibiting  the Company from pursuing
     any other available remedy for such breach or threatened breach,  including
     the recovery of damages.

          (d) Because of (i) the  difficulty of measuring  economic  losses as a
     result of the breach of the  foregoing  covenants  in Section  10.01(c) and
     (ii) the  immediate  and  irreparable  damage  that  would be caused to the
     Company for which it would have no other adequate  remedy,  USC agrees that
     the Company may enforce the  provisions of Section  10.01(c) by injunctions
     and restraining orders against it.

          (e) The  obligations  of the  parties  under this  Section  10.01 will
     survive the termination of this Agreement.

     Section 10.02 BROKERS AND AGENTS.  Except as Schedule 1.04 sets forth,  the
Stockholders jointly and severally represent and warrant to USC that the Company
has not directly or indirectly employed or become obligated to pay any broker or
similar agent in connection with the transactions contemplated hereby and agree,
without regard to the Threshold  Amount  limitations  Article VII sets forth, to
indemnify  USC against all Damage  Claims  arising out of claims for any and all
fees and commissions of brokers or similar agents  employed or promised  payment
by the Company.

     Section 10.03 ASSIGNMENT; NO THIRD PARTY BENEFICIARIES.  This Agreement and
the rights of the parties  hereunder may not be assigned (except by operation of
law) and will be binding on and inure to the benefit of the parties hereto,  the
successors of USC and the heirs and legal  representatives  of the  Stockholders
(and, in the case of any trust, the successor  trustees of that trust).  Neither
this  Agreement  nor any other  Transaction  Document is  intended,  or shall be
construed,  deemed or interpreted, to confer on any Person not a party hereto or
thereto  any rights or remedies  hereunder  or  thereunder,  except as the final
sentence of Section 1.05,  Article VII and Section 10.12 provide or as otherwise
provided expressly herein or therein.

     Section 10.04 ENTIRE AGREEMENT;  AMENDMENT; WAIVERS. This Agreement and the
documents   delivered  pursuant  hereto  constitute  the  entire  agreement  and
understanding among the Stockholders, the Company, USC Sub and USC and supersede
all prior agreements and understandings,  both written and oral, relating to the
subject matter of this  Agreement.  This  Agreement may be amended,  modified or
supplemented,  and any right  hereunder  may be waived,  if,  but only if,  that
amendment,  modification,  supplement  or waiver is in writing and signed by the
Stockholders  entitled  to  receive  at  least  80%  of  the  total  Acquisition
Consideration,  the Company and USC; provided,  however, that no such amendment,
modification, supplement or waiver will be effective unless it is signed by each
Stockholder  affected  thereby to the extent  that it (i)  changes  the  several
nature of that Stockholder's  representations and warranties (to the extent they
are not already

                                      -65-
<PAGE>
joint and several as Article II and Section  10.02  provide),  (ii)  reduces the
amount,  or  changes  the  components,  of the  Acquisition  Consideration  that
Stockholder  is entitled to receive  pursuant to  Paragraph 2 or (iii) amends or
waives this sentence. The waiver of any of the terms and conditions hereof shall
not be construed or interpreted  as, or deemed to be, a waiver of any other term
or condition hereof.

     Section 10.05 EXPENSES. Whether or not the transactions contemplated hereby
are consummated,  (i) USC will pay the fees,  expenses and  disbursements of USC
and its  Subsidiaries and their  Representatives  in connection with the subject
matter of this  Agreement and any  amendments  thereto,  including all costs and
expenses incurred in the performance of and compliance with all conditions to be
performed  by USC and USC Sub under this  Agreement,  and (ii) the  Stockholders
will pay, from personal funds,  and not from funds of the Company or any Company
Subsidiary,  all sales,  use,  transfer and other similar  taxes  (collectively,
"Transfer  Taxes")  and  fees  incurred  in  connection  with  the  transactions
contemplated hereby,  including the fees, expenses and disbursements counsel for
the Company and the Stockholders  incur in connection with the subject matter of
this Agreement;  provided,  however, that the Stockholders may cause the Company
to pay the reasonable and customary fees,  expenses and disbursements of counsel
for the Company and the  Stockholders  incurred in  connection  with the subject
matter of this  Agreement  on or before the IPO Closing Date to the extent those
fees,  expenses and disbursements  have been paid on or prior to the IPO Closing
Date or are recorded as liabilities on the Final Balance Sheet. The Stockholders
will file all necessary  documentation  and Returns with respect to all Transfer
Taxes. In addition,  each Stockholder  acknowledges that he, and not the Company
or USC or the  Surviving  Corporation,  will pay all Taxes due on receipt of the
consideration  payable to that  Stockholder  pursuant to the  transactions  this
Agreement contemplates.

     Section 10.06 NOTICES.  All notices required or permitted hereunder must be
in writing and will be deemed to be delivered  and  received  (i) if  personally
delivered or if delivered by telex, telegram, facsimile or courier service, when
actually  received by the party to whom notice is sent or (ii) if  delivered  by
mail (whether  actually  received or not), at the close of business on the third
Houston,  Texas  business  day next  following  the day when placed in the mail,
postage prepaid, certified or registered,  addressed to the appropriate party or
parties,  at the  address of such party or parties  set forth  below (or at such
other address as such party may designate by written notice to all other parties
in accordance herewith):

     (i)  if to USC or USC Sub, addressed to it at:

          U.S. Concrete, Inc.
          1360 Post Oak Boulevard, Suite 800
          Houston, Texas 77056
          Attn.: Chief Executive Officer
          Facsimile: 713-350-6001


                                      -66-
<PAGE>
          with copies  (which will not  constitute  notice for  purposes of this
          Agreement) to:

          Baker & Botts, L.L.P.
          One Shell Plaza
          Houston, Texas  77002-4995
          Attn: Ted W. Paris, Esq.
          Facsimile: 713-229-1522

     (ii) if to the Company or any of the Stockholders, addressed to that Person
          as Paragraph 7 sets forth.

     SECTION 10.07  GOVERNING LAW. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS
OF THE  PARTIES  HERETO  SHALL BE  GOVERNED  BY AND  CONSTRUED  AND  ENFORCED IN
ACCORDANCE WITH THE SUBSTANTIVE  LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO
THE CONFLICTS OF LAW PROVISIONS THEREOF.

     Section 10.08 EXERCISE OF RIGHTS AND REMEDIES. Except as otherwise provided
herein,  no delay or  omission  in the  exercise  of any right,  power or remedy
accruing to any party  hereto as a result of any breach or default  hereunder by
any other party hereto will impair any such right,  power or remedy, nor will it
be construed,  deemed or interpreted as a waiver of or  acquiescence in any such
breach or default, or of any similar breach or default occurring later; nor will
any waiver of any single breach or default be construed,  deemed or  interpreted
as a waiver of any other breach or default  hereunder  occurring before or after
that waiver.

     Section  10.09  TIME.  Time is of the  essence in the  performance  of this
Agreement in all respects.

     Section  10.10  REFORMATION  AND  SEVERABILITY.  If any  provision  of this
Agreement is invalid,  illegal or  unenforceable,  that  provision  will, to the
extent  possible,  be  modified  in  such  manner  as to  be  valid,  legal  and
enforceable  but so as to most nearly retain the intent of the parties hereto as
expressed  herein,  and if such a modification  is not possible,  that provision
will be severed from this Agreement,  and in either case the validity,  legality
and enforceability of the remaining provisions of this Agreement will not in any
way be affected or impaired thereby.

     Section 10.11 REMEDIES CUMULATIVE. No right, remedy or election any term of
this Agreement gives will be deemed exclusive,  but each will be cumulative with
all other rights, remedies and elections available at law or in equity.

     Section  10.12  RELEASE.   Notwithstanding  any  other  provision  of  this
Agreement and subject to the limitations the last sentence of this Section 10.12
sets forth, each Stockholder hereby unconditionally and irrevocably releases and
forever discharges, effective as of and forever after the Effective Time, to the
fullest  extent  permitted by applicable  law, all past,  present and future USC
Indemnified  Parties  (including,  after the Effective Time, each of the Company
and the Company

                                      -67-
<PAGE>
     Subsidiaries  which is a Subsidiary of USC immediately  after the Effective
Time)   (collectively,   the  "Released   Parties")  from  any  and  all  debts,
liabilities,  obligations,  claims, demands, actions or causes of action, suits,
judgments   or   controversies    of   any   kind   whatsoever    (collectively,
"Pre-Acquisition  Claims") against the Company and the Company Subsidiaries,  if
any,  or any  of  them  that  arises  out of or is  based  on any  agreement  or
understanding or act or failure to act (INCLUDING ANY ACT OR FAILURE TO ACT THAT
CONSTITUTES  ORDINARY  OR  GROSS  NEGLIGENCE  OR  RECKLESS  OR  WILLFUL,  WANTON
MISCONDUCT),  misrepresentation,  omission,  transaction,  fact,  event or other
matter  occurring prior to the Effective Time (whether based on any Governmental
Requirement  or right of action,  at law or in equity or otherwise,  foreseen or
unforeseen,  matured or  unmatured,  known or unknown,  accrued or not  accrued)
(collectively,  "Pre-Acquisition  Matters"),  including without limitation:  (i)
claims by the  Stockholder  with respect to  repayment of loans or  indebtedness
(except  for  promissory  notes  taken by the  Stockholder  with  respect to the
payment of the 1998  Restricted  Payment Amount or the 1999  Restricted  Payment
Amount);  (ii) any rights,  titles and interests in, to or under any agreements,
arrangements or  understandings  to which the Stockholder is a party;  and (iii)
claims by the  Stockholder  with respect to  dividends,  violation of preemptive
rights,  or payment of salaries or other  compensation or in any way arising out
of or in connection  with the  Stockholder's  employment with the Company or any
Company Subsidiary,  the cessation of that employment,  the Stockholder's status
as an  officer,  director  or  stockholder  of the  Company  or  otherwise  (but
excluding any and all claims in respect of (A) accrued and unpaid  amounts owing
to the Stockholder  pursuant to each Employment Agreement Schedule 2.27 lists to
which the Stockholder is a party, (B) accrued and unpaid Cash Compensation owing
to the Stockholder at the rates or in the amounts, as the case may be, set forth
in the list Section 2.27  describes,  (C)  benefits  accrued  under each Company
ERISA Benefit Plan or Other  Compensation  Plan, the existence of which Schedule
2.27 discloses and (D) amounts or other  obligations  owing to the  Stockholder,
directly or indirectly,  pursuant to each Related Party Agreement, if any, which
Schedule 2.12 discloses and to which the Stockholder, directly or indirectly, is
a party).  The  Stockholder  further  agrees not to file or bring any Litigation
before  any   Governmental   Authority  on  the  basis  of  or  respecting   any
Pre-Acquisition Claim concerning any Pre-Acquisition Matter against any Released
Party.  Each Stockholder (i) acknowledges  that he or she fully  comprehends and
understands all the terms of this Section 10.12 and their legal effects and (ii)
expressly  represents and warrants that (A) he or she is competent to effect the
release  made in this  Section  10.12  knowingly  and  voluntarily  and  without
reliance  on any  statement  or  representation  of any  Released  Party  or its
Representatives  and  (B) he or she  had  the  opportunity  to  consult  with an
attorney of his or her choice  regarding this Section 10.12.  This Section 10.12
will not affect the rights of the Stockholders under this Agreement or any other
Transaction Document.

     Section 10.13  RESPECTING THE IPO. Each of the Company and the Stockholders
acknowledges  and agrees  that:  (i) no firm  commitment,  binding  agreement or
promise or other  assurance  of any kind,  whether  express or implied,  oral or
written,  exists at the date hereof that the Registration  Statement will become
effective  or that  the IPO  will  occur  at a  particular  price  or  within  a
particular  range of  prices  or occur at all;  (ii)  neither  USC or any of its
Representatives  nor any  prospective  underwriters  in the IPO  will  have  any
liability to the Company, the Stockholders or any of their respective Affiliates
or associates for any failure of (A) the Registration Statement to become

                                      -68-
<PAGE>
effective (provided,  however,  that USC will use its reasonable best efforts to
cause the  Registration  Statement to become  effective prior to the Termination
Date) or (B) the IPO to occur at a particular price or within a particular range
of prices or to occur at all;  and (iii) the decision of  Stockholders  to enter
into this Agreement,  or to vote in favor of or consent to the Merger,  has been
or will be made  independent  of,  and  without  reliance  on,  any  statements,
opinions or other  communications of, or due diligence  investigations that have
been or will be made or performed by, any  prospective  underwriter  relative to
USC or the IPO. The  Underwriter  will have no  obligation to any of the Company
and  the  Stockholders   with  respect  to  any  disclosure   contained  in  the
Registration  Statement.  Each Stockholder further agrees to execute and deliver
to the investment  banking firm acting as the lead managing  underwriter for the
IPO (if requested by that firm) a customary lockup  agreement  pursuant to which
that  Stockholder will agree not to sell,  transfer or otherwise  dispose of any
shares of USC  Common  Stock  during a period of time,  not to exceed  180 days,
following the date of the Final Prospectus.

     Section 10.14  RESTRICTIONS ON TRANSFER OF USC COMMON STOCK. (a) During the
one-year  period  ending  on the  first  anniversary  of the  Closing  Date (the
"Restricted  Period"),  no  Stockholder  voluntarily  will:  (i)  sell,  assign,
exchange, transfer,  encumber, pledge, distribute,  appoint or otherwise dispose
of (A) any shares of USC Common Stock received by any  Stockholder in the Merger
or (B) any interest in (including any option to buy or sell) any of those shares
of USC Common Stock,  in whole or in part,  and USC will have no obligation  to,
and will not, treat any such attempted transfer as effective for any purpose; or
(ii) engage in any transaction, whether or not with respect to any shares of USC
Common Stock or any interest therein, the intent or effect of which is to reduce
the risk of owning the shares of USC Common Stock acquired pursuant to Paragraph
2 (including, for example engaging in put, call, short-sale, straddle or similar
market  transactions);  provided,  however,  that this  Section  10.14  will not
restrict any transfer of USC Common Stock acquired by a Stockholder  pursuant to
Paragraph 2 to any of that Stockholder's Related Persons who agree in writing to
be bound  by the  provisions  of  Section  10.01  and this  Section  10.14.  The
certificates  evidencing  the USC Common  Stock  delivered  to each  Stockholder
pursuant to Paragraph 2 will bear a legend  substantially  in the form set forth
below  and  containing  such  other  information  as USC may deem  necessary  or
appropriate:

     EXCEPT  PURSUANT TO THE TERMS OF THE AGREEMENT  AND PLAN OF  REORGANIZATION
AMONG THE ISSUER,  THE HOLDER OF THIS CERTIFICATE AND THE OTHER PARTIES THERETO,
THE  SHARES  REPRESENTED  BY  THIS  CERTIFICATE  MAY  NOT BE  VOLUNTARILY  SOLD,
ASSIGNED, EXCHANGED, TRANSFERRED, ENCUMBERED, PLEDGED, DISTRIBUTED, APPOINTED OR
OTHERWISE DISPOSED OF, AND THE ISSUER WILL NOT BE REQUIRED TO GIVE EFFECT TO ANY
ATTEMPTED VOLUNTARY SALE, ASSIGNMENT,  EXCHANGE, TRANSFER, ENCUMBRANCE,  PLEDGE,
DISTRIBUTION,  APPOINTMENT OR OTHER  DISPOSITION OF ANY OF THOSE SHARES,  DURING
THE  ONE-YEAR  PERIOD  ENDING  ON  ____________,  2000  [DATE  THAT IS THE FIRST
ANNIVERSARY  OF THE IPO CLOSING DATE].  ON THE WRITTEN  REQUEST OF THE HOLDER OF
THIS CERTIFICATE,  THE ISSUER AGREES TO REMOVE THIS RESTRICTIVE  LEGEND (AND ANY
STOP ORDER PLACED WITH THE TRANSFER  AGENT) AFTER THE  EXPIRATION OF THE PERIODS
SPECIFIED ABOVE.

                                      -69-
<PAGE>
          (b) Each Stockholder, severally and not jointly with any other Person,
     (i)  acknowledges  that the shares of USC Common  Stock to be  delivered to
     that  Stockholder  pursuant to  Paragraph  2 (A) have not been and,  except
     pursuant to the Registration Rights Agreement,  if applicable,  will not be
     registered under the Securities Act and therefore may not be resold by that
     Stockholder  without  compliance with the Securities Act and (B) will, as a
     result of the  restrictions on their  transferability  which this Agreement
     imposes during the Restricted  Period,  have a value materially less on the
     IPO Closing Date than would be the value of freely  tradable  shares of USC
     Common Stock and (ii) covenants that none of the shares of USC Common Stock
     issued to that Stockholder  pursuant to Paragraph 2 will be offered,  sold,
     assigned,  pledged,  hypothecated,  transferred  or  otherwise  disposed of
     except after full  compliance  with all the  applicable  provisions  of the
     Securities  Act and the rules  and  regulations  of the SEC and  applicable
     state securities laws and regulations.  All certificates  evidencing shares
     of USC Common Stock issued  pursuant to Paragraph 2 will bear the following
     legend in addition to the legend Section 10.14(a) prescribes:

               THE SHARES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
          SECURITIES  ACT OF 1933 AND MAY ONLY BE SOLD OR OTHERWISE  TRANSFERRED
          IF THE  HOLDER  HEREOF  COMPLIES  WITH THAT LAW AND  OTHER  APPLICABLE
          SECURITIES LAWS.

In addition,  certificates evidencing shares of USC Common Stock issued pursuant
to  Paragraph  2 to each  Stockholder  will  bear  any  legend  required  by the
securities or blue sky laws of the state in which that Stockholder resides.

     Section 10.15 SUBDIVISIONS AND RECOMBINATIONS OF USC COMMON STOCK. Upon the
occurrence of an event prior to the IPO Closing Date by which (i) the USC Common
Stock is  subdivided  into a greater  number of shares or (ii)  combined  into a
smaller number of shares prior to the IPO Closing Date, the number of shares set
forth in Schedule 2(D) shall be adjusted by either (a)  increasing the number of
shares set forth on Schedule 2(D) in proportion to the subdivision of the shares
or (b)  decreasing the number of shares set forth on Schedule 2(D) in proportion
to any combination of such shares.

                                   ARTICLE XI

                                   TERMINATION

     Section 11.01  TERMINATION  OF THIS  AGREEMENT.  (a) This  Agreement may be
terminated at any time prior to the Closing solely:

               (i) by the mutual written consent of USC and the Company;

               (ii) by the  Stockholders or the Company,  on the one hand, or by
          USC,  on the other  hand,  if the  transactions  contemplated  by this
          Agreement to take place at the Closing shall not have been consummated
          by the Termination Date, unless the failure of such transactions to be
          consummated  results from the willful  failure of the party (or in the
          case

                                      -70-
<PAGE>
          of the Stockholders and the Company, any of them) seeking to terminate
          this Agreement to perform or adhere to any agreement  required  hereby
          to be  performed  or  adhered  to by it prior to or at the  Closing or
          thereafter on the IPO Closing Date;

               (iii) by the Stockholders or the Company,  on the one hand, or by
          USC, on the other hand, if a material breach or default is made by the
          other party (or in the case of the Stockholders  and the Company,  any
          of them) in the observance or in the due and timely performance of any
          of the covenants, agreements or conditions contained herein;

               (iv) by USC if Section 4.07 entitles it to do so; or

               (v) by the  Stockholders  or the  Company if any Other  Agreement
          with an Other  Founding  Company  whose  revenues  for the year  ended
          December 31, 1998 exceeded 20% of the pro forma  combined  revenues of
          all the Founding  Companies  for the year ended  December 31, 1998, in
          each  case as the  Private  Placement  Memorandum  reflects,  has been
          terminated pursuant to its terms.

          (b) This Agreement may be terminated after the Closing solely:

               (i) by  USC or the  Company  if  the  Underwriting  Agreement  is
          terminated  pursuant  to its terms  after the Closing and prior to the
          consummation  of the IPO (in the  event of any such  termination,  USC
          will  provide  the  Company and the  Stockholders  with prompt  notice
          thereof); or

               (ii)  automatically  and without  action on the part of any party
          hereto if the IPO is not consummated  within 15 New York City business
          days after the Closing Date.

     Section 11.02 LIABILITIES IN THE EVENT OF TERMINATION. If this Agreement is
terminated  pursuant to Section 11.01, there shall be no liability or obligation
on the part of any party hereto except (i) as Section 10.05 provides and (ii) to
the extent  that such  liability  is based on the breach by that party of any of
its representations, warranties or covenants set forth in this Agreement.




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