US CONCRETE INC
10-Q, 1999-08-16
CONCRETE PRODUCTS, EXCEPT BLOCK & BRICK
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<PAGE>   1



                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                    FORM 10-Q

(MARK ONE)

[X] Quarterly report pursuant to section 13 or 15(d) of the Securities Exchange
    Act of 1934

    for the quarterly period ended June 30, 1999 or
                                   -------------

[ ] Transition report pursuant to Section 13 or 15(d) of the Securities
    Exchange Act of 1934.

    for the transition period from                      to
                                    -------------------    --------------------

Commission file number                        1-12977
                        -------------------------------------------------------


                               U.S. CONCRETE, INC.
- -------------------------------------------------------------------------------
             (exact name of Registrant as specified in its charter)

                  Delaware                                     76-0586680
- -------------------------------------------------------------------------------
      (State or other jurisdiction of                      (I.R.S. Employer
       incorporation or organization)                       Identification No.)

1360 Post Oak Blvd., Suite 800, Houston, Texas                   77056
- -------------------------------------------------------------------------------
  (Address of principal executive offices)                    (Zip code)

   Registrant's telephone number, including area code:     (713) 350-6040

   The number of shares of Common Stock of the Registrant, par value $.001 per
share, outstanding at August 13, 1999 was 16,208,543.




<PAGE>   2





                                     PART I
ITEM 1. FINANCIAL STATEMENTS

                    PRO FORMA COMBINED FINANCIAL INFORMATION


ORGANIZATION AND BASIS OF PRESENTATION

U.S. Concrete, Inc., a Delaware corporation, was founded in July 1997 to create
a leading provider of ready-mixed concrete and related products and services to
the construction industry in major markets in the United States. It did not
conduct any operations prior to May 1999. On May 28, 1999, it completed an
initial public offering of its common stock and concurrently acquired six
operating businesses (the "Acquired Businesses"). U.S. Concrete intends to
acquire additional companies to expand its operations.

For financial statement presentation purposes, (1) Central Concrete Supply Co.,
Inc., one of the Acquired Businesses, is presented as the acquirer of the other
Acquired Businesses and U.S. Concrete, (2) these acquisitions are accounted for
in accordance with the purchase method of accounting and (3) the effective date
of the acquisitions is May 31, 1999. As used herein, the term "Company" means
(1) Central prior to June 1, 1999 and (2) U.S. Concrete and its consolidated
subsidiaries on that date and thereafter.

The accompanying unaudited pro forma combined statements of operations for the
six months ended June 30, 1999 and 1998, respectively, assume that U.S. Concrete
completed the following transactions on January 1 in each period presented:

     o   its issuance and sale in the IPO of 4.4 million shares of its common
         stock (including shares it sold on the exercise of its underwriters'
         over-allotment option) at $8.00 per share;

     o   its application of its net proceeds from the IPO;

     o   its acquisition of the six Acquired Businesses and its payment of the
         purchase prices for those businesses; and

     o   its refinancing with borrowings under its credit facility of the
         indebtedness it assumed as a result of the acquisitions.

These statements also reflect pro form adjustments for:

     o   certain contractual reductions in salaries, bonuses and benefits to
         former owners of the Acquired Businesses;

     o   elimination of legal, accounting and other professional fees incurred
         in connection with the acquisitions of the Acquired Businesses;

     o   amortization of goodwill resulting from the acquisitions of the
         Acquired Businesses;

     o   reduction in interest expense, net of interest expense on borrowings to
         fund S corporation distributions by certain of the Acquired Businesses;
         and

     o   adjustments to the federal and state income tax provision based on pro
         forma operating results.

You should read the accompanying unaudited pro forma combined statements of
operations together with the Company's historical unaudited financial statements
and notes thereto this report includes. The pro forma adjustments are based on
estimates, available information and certain assumptions which may be revised as
additional information becomes available. The pro forma financial information
does not purport to represent what the Company's combined financial position or
results of operations would actually have been if such transactions had in fact
occurred when assumed and are not necessarily representative of the Company's
financial position or results of operations for any future period. Since U.S.
Concrete and the Acquired Businesses were not under common control or management
for all or a portion of the periods presented, historical combined results may
not be comparable to, or indicative of, future performance.



                                       2
<PAGE>   3


                      U.S. CONCRETE, INC. AND SUBSIDIARIES
                   PRO FORMA COMBINED STATEMENTS OF OPERATIONS
               (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS; UNAUDITED)


<TABLE>
<CAPTION>

                                                                                          SIX MONTHS ENDED
                                                                                               JUNE 30,
                                                                                    ------------------------------

                                                                                    ------------------------------
                                                                                       1999                1998
                                                                                    ----------          ----------
<S>                                                                                 <C>                 <C>
Sales                                                                               $   88,505          $   82,709
Cost of goods sold                                                                      71,801              68,317
                                                                                    ----------          ----------
     Gross profit                                                                       16,704              14,392
Selling, general and administrative expenses                                             7,085               4,400
Stock compensation charge                                                                2,880                  --
Depreciation and amortization                                                            2,256               2,256
                                                                                    ----------          ----------
     Income from operations                                                              4,483               7,736
Interest expense, net                                                                     (361)               (361)
Other income, net                                                                          877                 233
                                                                                    ----------          ----------
     Income before provision for income taxes                                            4,999               7,608
Provision for income taxes                                                               2,138               3,133
                                                                                    ----------          ----------
    Net income                                                                      $    2,861          $    4,475
                                                                                    ==========          ==========

Net income per share:
     Basic                                                                          $     0.18          $     0.28
                                                                                    ==========          ==========
     Diluted                                                                        $     0.18          $     0.28
                                                                                    ==========          ==========

Number of shares used in calculating net income per share:
     Basic                                                                              16,209              16,209
                                                                                    ==========          ==========
     Diluted                                                                            16,273              16,209
                                                                                    ==========          ==========

</TABLE>



              The accompanying notes are an integral part of these
                    pro forma combined financial statements.



                                       3
<PAGE>   4




                      U.S. CONCRETE, INC. AND SUBSIDIARIES
              NOTES TO PRO FORMA COMBINED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)



1. SHARES USED IN COMPUTING PRO FORMA NET INCOME PER SHARE

The following table summarizes the number of shares (in thousands) of common
stock used in calculating pro forma net income per share:
<TABLE>
<CAPTION>

                                                                                        SIX MONTHS ENDED
                                                                                             JUNE 30,
                                                                                    ---------------------------
                                                                                     1999                 1998
                                                                                    ------               ------
<S>                                                                                 <C>                  <C>
Shares issued to the owners of the Acquired Businesses                               8,985                8,985
Shares issued to the initial stockholders and certain management personnel
     of U.S. Concrete                                                                2,854                2,854
Shares issued in the IPO                                                             4,370                4,370
                                                                                    ------               ------
         Number of shares used in calculating basic net income per share            16,209               16,209
Effect of shares issuable under stock options and warrants based on the
     treasury stock method                                                              64                   --
                                                                                    ------               ------
         Number of shares used in calculating diluted net income per share          16,273               16,209
                                                                                    ======               ======

</TABLE>


                                       4
<PAGE>   5




                      U.S. CONCRETE, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)


<TABLE>
<CAPTION>
                                                                                          JUNE 30,        DECEMBER 31,
                                                                                            1999              1998
                                                                                         -----------       ----------
                                                                                         (UNAUDITED)
                                      ASSETS
<S>                                                                                      <C>               <C>
Current assets:
         Cash and cash equivalents                                                         $   9,122        $   4,213
         Trade accounts receivable, net                                                       27,576            7,641
         Receivables from related parties                                                      4,367            2,712
         Inventories                                                                           1,786              792
         Prepaid expenses                                                                      1,549              833
         Deferred tax asset                                                                      276               --
         Other current assets                                                                    294              156
                                                                                         -----------       ----------
                  Total current assets                                                        44,970           16,347
                                                                                         -----------       ----------
Property, plant and equipment, net                                                            44,493            9,138
Goodwill, net                                                                                 56,277               --
Cash surrender value of life insurance                                                            --            1,155
Other assets                                                                                     884               --
                                                                                         -----------       ----------
                  Total assets                                                           $   146,624       $   26,640
                                                                                         ===========       ==========

                                  LIABILITIES AND
                               STOCKHOLDERS' EQUITY
Current liabilities:
         Current maturities of long-term debt                                                $   137        $   1,006
         Accounts payable and accrued liabilities                                             33,281            7,910
                                                                                         -----------       ----------
                  Total current liabilities                                                   33,418            8,916
                                                                                         -----------       ----------

Long-term debt, net of current maturities                                                     18,912            2,524
Deferred income taxes                                                                          2,991               46
                                                                                         -----------       ----------
                  Total liabilities                                                           55,321           11,486
                                                                                         -----------       ----------

Stockholders' equity
         Common stock                                                                                 16               70
         Additional paid-in capital                                                           92,314              554
         Retained earnings (deficit)                                                          (1,027)          14,530
                                                                                         -----------       ----------
                  Total stockholders' equity                                                  91,303           15,154
                                                                                         -----------       ----------
                  Total liabilities and stockholders' equity                             $   146,624       $   26,640
                                                                                         ===========       ==========
</TABLE>


         The accompanying notes are an integral part of these condensed
                       consolidated financial statements.



                                       5
<PAGE>   6



                      U.S. CONCRETE, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF OPERATIONS
               (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS; UNAUDITED)


<TABLE>
<CAPTION>
                                                       THREE MONTHS                 SIX MONTHS
                                                       ENDED JUNE 30,              ENDED JUNE 30,
                                                   ----------------------      ----------------------
                                                     1999          1998          1999          1998
                                                   --------      --------      --------      --------

<S>                                                <C>           <C>           <C>           <C>
Sales                                              $ 27,648      $ 15,775      $ 40,604      $ 25,693
Cost of goods sold                                   22,150        12,793        32,775        21,330
                                                   --------      --------      --------      --------
     Gross profit                                     5,498         2,982         7,829         4,363
Selling, general and administrative expenses          2,134         1,056         3,457         1,656
Stock compensation charge                             2,880            --         2,880            --
Depreciation and amortization                           666           272           959           460
                                                   --------      --------      --------      --------
     Income (loss) from operations                     (182)        1,654           533         2,247
Interest income (expense), net                         (317)          (20)         (279)           23
Other income (expense), net                             145           (25)          334            28
                                                   --------      --------      --------      --------
     Income (loss) before income tax provision         (354)        1,609           588         2,298
Income tax provision (benefit)                          (97)          852           263         1,114
                                                   --------      --------      --------      --------
     Net income (loss)                             $   (257)     $    757      $    325      $  1,184
                                                   ========      ========      ========      ========

Net income (loss) per share:
     Basic                                         $  (0.03)     $   0.24      $   0.05      $   0.38
                                                   ========      ========      ========      ========
     Diluted                                       $  (0.03)     $   0.24      $   0.05      $   0.38
                                                   ========      ========      ========      ========

 Number of shares used in calculating net
 income (loss) per share:
      Basic                                           8,576         3,120         6,037         3,120
                                                   ========      ========      ========      ========
      Diluted                                         8,576         3,120         6,102         3,120
                                                   ========      ========      ========      ========

</TABLE>


         The accompanying notes are an integral part of these condensed
                       consolidated financial statements.


                                       6
<PAGE>   7






                      U.S. CONCRETE, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                            (IN THOUSANDS; UNAUDITED)

<TABLE>
<CAPTION>
                                                                                                  SIX MONTHS
                                                                                                ENDED JUNE 30,
                                                                                           ----------------------
                                                                                             1999           1998
                                                                                           --------      --------
<S>                                                                                        <C>           <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
     Net income                                                                            $    325      $  1,184
     Adjustments to reconcile net income to net cash provided by operating activities:
         Depreciation and amortization                                                          959           460
         Net gain on sale of property, plant and equipment                                     (215)           --
         Change in allowance for doubtful accounts                                              217             2
         Stock compensation charge                                                            2,880            --
     Changes in assets and liabilities, excluding effects of acquisitions:
         Trade accounts receivable                                                           (4,361)         (270)
         Prepaid expenses and other current assets                                              (60)          302
         Accounts payable and accrued liabilities                                             3,027         1,409
                                                                                           --------      --------
                  Net cash provided operating activities                                      2,772         3,087
                                                                                           --------      --------

CASH FLOWS FROM INVESTING ACTIVITIES:
     Purchases of property, plant and equipment                                              (2,240)       (1,112)
     Payments for acquisitions accounted for as purchases, net of cash received of
        $9,154                                                                              (37,051)           --
     Proceeds from disposals of property, plant and equipment                                   959            --
     Increase in cash surrender value of life insurance                                          --           (91)
     Other                                                                                      691            --
                                                                                           --------      --------
                  Net cash used in investing activities                                     (37,641)       (1,203)
                                                                                           --------      --------

CASH FLOWS FROM FINANCING ACTIVITIES:
     Proceeds from borrowings                                                                18,700         1,487
     Repayments of borrowings                                                                (3,480)         (423)
     Proceeds from issuances of common stock                                                 32,512            --
     Cash paid related to common stock issuance costs                                        (3,002)           --
     Distributions to stockholders                                                           (4,952)       (1,495)
                                                                                           --------      --------
                  Net cash provided by (used in) financing activities                        39,778          (431)
                                                                                           --------      --------

NET INCREASE IN CASH AND CASH EQUIVALENTS                                                     4,909         1,453

CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                                              4,213         1,945

                                                                                           --------      --------
CASH AND CASH EQUIVALENTS AT END OF PERIOD                                                 $  9,122      $  3,398
                                                                                           ========      ========
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
     Cash paid during the period for interest                                              $    262      $    131
     Cash paid during the period for income taxes                                          $    137      $     --

NONCASH FINANCING ACTIVITY:
     Distribution of cash surrender value of life insurance to stockholder                 $  1,155      $     --


</TABLE>


         The accompanying notes are an integral part of these condensed
                       consolidated financial statements.


                                       7
<PAGE>   8


                      U.S. CONCRETE, INC. AND SUBSIDIARIES
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)



1. ORGANIZATION AND BASIS OF PRESENTATION

U.S. Concrete was founded to create a leading provider of ready-mixed concrete
and related products and services to the construction industry in major markets
in the United States. U.S. Concrete conducted no operations of its own prior to
the closing on May 28, 1999 of (1) its initial public offering of its common
stock and (2) its acquisition for shares of its common stock and cash of six
operating businesses (the "Acquired Businesses").

For financial statement presentation purposes, (1) Central Concrete Supply Co.,
Inc., one of the Acquired Businesses, is presented as the acquirer of the other
Acquired Businesses and U.S. Concrete, (2) these acquisitions are accounted for
in accordance with the purchase method of accounting and (3) the effective date
of the acquisitions is May 31, 1999. As used herein, the term "Company" means
(1) Central prior to June 1, 1999 and (2) U.S. Concrete and its consolidated
subsidiaries on that date and thereafter.

Under applicable regulations of the SEC, the historical financial statements in
this report are unaudited and omit information and footnote disclosures that
financial statements prepared in accordance with generally accepted accounting
principles normally would include. In the opinion of management, (1) the
disclosures herein are adequate to make the information presented not misleading
and (2) the financial statements reflect all elimination entries and normal
adjustments that are necessary for a fair presentation of the results for the
interim periods presented.

Operating results for interim periods are not necessarily indicative of the
results for full years. You should read these condensed consolidated financial
statements together with the audited financial statements and the notes thereto
of U.S. Concrete and the Acquired Businesses which U.S. Concrete's registration
statement for its IPO includes.

2. SIGNIFICANT ACCOUNTING POLICIES

The Company has not added to or changed its accounting policies significantly
since December 31, 1998. For a description of these policies, see Note 2 of
Notes to Financial Statements of Central in U.S. Concrete's IPO registration
statement.

3. SHARES USED IN COMPUTING NET INCOME (LOSS) PER SHARE

The following table summarizes the number of shares (in thousands) of common
stock we have used on a weighted average basis in calculating net income or loss
per share:


<TABLE>
<CAPTION>
                                                          THREE MONTHS         SIX MONTHS
                                                         ENDED JUNE 30,       ENDED JUNE 30,
                                                        ---------------     ---------------
                                                        1999       1998      1999     1998
                                                        -----     -----     -----     -----
<S>                                                     <C>       <C>       <C>       <C>
Shares issued to Central's owners                       3,120     3,120     3,120     3,120
Shares issued to owners of Acquired Businesses
     other than Central                                 2,127        --     1,069        --
Shares issued to the initial stockholders and
     certain management personnel of U.S. Concrete      1,832        --     1,095        --
Shares issued in the IPO                                1,497        --       753        --
                                                        -----     -----     -----     -----
         Number of shares used in calculating basic
         net income (loss) per share                    8,576     3,120     6,037     3,120
Effect of shares issuable under stock options and
     warrants based on the treasury stock method           --        --        65        --
                                                        -----     -----     -----     -----
         Number of shares used in calculating
         diluted net income (loss) per share            8,576     3,120     6,102     3,120
                                                        =====     =====     =====     =====
</TABLE>



                                       8
<PAGE>   9





                               U.S. CONCRETE, INC.
       NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS - (CONTINUED)
                                   (UNAUDITED)


4. LONG-TERM DEBT

A summary of long-term debt is as follows (dollars in thousands):

<TABLE>
<CAPTION>
                                                                        JUNE 30,   DECEMBER 31,
                                                                         1999         1998
                                                                      ---------    ------------
<S>                                                                   <C>
Secured revolving credit facility                                     $ 18,700      $     --
Notes payable to various financial institutions, secured by mixer
     trucks, maturing in varying amounts through May 2003, with
     interest ranging from 7.0% to 9.7%                                     --         2,860
Notes payable to various financial institutions, secured by
     various equipment and guaranteed by stockholders, maturing
     in varying amounts through September 2003, with interest
     ranging from 4.7% to 8.8%                                              --           670
Other                                                                      349            --
                                                                      --------      --------
                                                                        19,049         3,530
     Less:  current maturities                                            (137)       (1,006)
                                                                      --------      --------
Long-term debt, net of current maturities                             $ 18,912      $  2,524
                                                                      ========      ========
</TABLE>




On May 28, 1999, U.S. Concrete entered into a three-year $75 million revolving
credit facility with a group of banks. The Company may use this facility for
working capital, to finance acquisitions and for other general corporate
purposes. Availability under the facility is tied to the Company's cash flow and
liquidity. Advances bear interest, at the Company's option, at a prime rate or
LIBOR, in each case plus a margin keyed to the ratio of the Company's
indebtedness to cash flow. Commitment fees are due on any unused borrowing
capacity. The facility requires the Company to maintain financial covenants
regarding net worth, coverage ratios and additional indebtedness and prohibits
dividends by U.S. Concrete. Subsidiary guarantees and pledges of substantially
all the Company's fixed assets secure the payment of all obligations owing under
the facility.

5. INCOME TAXES

Prior to May 28, 1999, Central and two other Acquired Businesses were S
corporations and were not subject to federal income taxes. Effective with their
acquisition they became C corporations subject to those taxes, and we have
recorded an estimated deferred tax liability to provide for the Company's
estimated future income tax liability as a result of the difference between the
book and tax bases of the net assets of these corporations. For purposes of
these consolidated financial statements, federal and previously inapplicable
state income taxes have been provided for the post-acquisition periods.

6. SEGMENT REPORTING

SFAS No. 131 "Disclosures about Segments of an Enterprise and Related
Information" requires that companies report separately information about each
significant operating segment reviewed by the chief operating decision maker.
All segments that meet a threshold of 10% of revenues, reported profit or loss,
or combined assets are defined as significant segments. The Company currently
operates under one segment and all operations and long-lived assets are in the
United States.



                                       9
<PAGE>   10



ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

You should read the following discussion together with (1) the pro forma and
historical financial statements and related notes this report contains and (2)
the pro forma and historical financial statements and related notes and
managements' discussion and analysis U.S. Concrete's IPO registration statement
contains. This discussion contains "forward-looking statements" within the
meaning of Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934. These statements are based on our current plans
and expectations and involve risks and uncertainties that could cause actual
future activities and results of operations to be materially different from
those set forth in the forward-looking statements. Important factors that could
cause actual results to differ include, among others, (1) the extent to which we
are able to grow through acquisitions, reduce costs and achieve revenue
enhancements in our operations, (2) the rate at which we will write off the
significant goodwill on our balance sheet, (3) changes in government
regulations, (4) competition, (5) Year 2000 issues and (6) other risk factors
discussed in U.S. Concrete's IPO registration statement.

We expect to derive substantially all our revenues from the sale of ready-mixed
concrete, other concrete products and related construction materials to the
construction industry in the United States. We will serve all segments of the
construction industry, and our customers will include contractors for
commercial, industrial, residential and public works and infrastructure
construction. We typically will sell ready-mixed concrete pursuant to daily
purchase orders that require us to formulate, prepare and deliver ready-mixed
concrete to the job sites of our customers. We generally will recognize our
sales from these orders when we deliver the ordered products.

Our cost of goods sold consist principally of the costs we incur in obtaining
the cement, aggregates and admixtures we combine to produce ready-mixed concrete
and other concrete products in various formulations. We obtain all these
materials from third parties and generally have only one day's supply at each of
our concrete plants. Our cost of goods sold also includes labor costs and the
operating, maintenance and rental expenses we incur in operating our concrete
plants and mixer trucks and other vehicles.

Our selling expenses include the salary and incentive compensation we pay our
sales force, the salaries and incentive compensation of our sales managers and
travel, entertainment and other promotional expenses. Our general and
administrative expenses include the salaries and benefits we pay to our
executive officers, the senior managers of our local and regional operations,
plant managers and administrative staff, as well as office rent and utilities,
communications expenses and professional fees.

Our pro forma combined statements of operations include pro forma adjustments to
our selling, general and administrative expenses to reflect the reductions in
salaries, bonuses and benefits to which owners of the businesses we have
acquired agreed would take effect when we acquired them and the elimination of
nonrecurring legal, accounting and other professional fees attributable to the
acquisitions. Our pro forma combined statements of operations also reflect the
substantial increase in income tax expense which will result from the conversion
of three of those businesses from S corporations into C corporations.

We expect that our integration of the businesses we have acquired will present
opportunities to realize cost savings through the elimination of duplicative
functions and the development of economies of scale. We believe that we should
be able to:

             o    obtain greater discounts from suppliers;

             o    borrow at lower interest rates;

             o    consolidate insurance programs; and

             o    generate savings in other general and administrative areas.

We cannot currently quantify these savings and expect that various incremental
costs will partially offset them. These incremental costs include those
associated with:

             o    our corporate management;

             o    our being a public company; and

             o    our systems integration, upgrading and replacement.

Our pro forma combined statements of operations reflect neither the cost savings
nor the incremental costs we expect, but cannot quantify.

The pro forma combined financial information this report contains covers periods
during which the businesses we have acquired had different tax structures and
operated independently of each other as private, owner-operated companies. This


                                       10
<PAGE>   11



information reflects the purchase method of accounting to account for these
acquisitions and presents Central as the "accounting acquirer."

RESULTS OF OPERATIONS - PRO FORMA COMBINED

The following table sets forth for us on a pro forma combined basis selected
statement of operations information and that information as a percentage of
sales for the periods indicated.


<TABLE>
<CAPTION>
                                                          SIX MONTHS ENDED JUNE 30,
                                                 -------------------------------------------
                                                         1999                    1998
                                                 ---------------------  --------------------
                                                              (dollars in thousands)
<S>                                              <C>           <C>      <C>           <C>
Sales                                            $88,505       100.0%   $82,709       100.0%
Cost of goods sold                                71,801        81.1     68,317        82.6
                                                 -------       -----    -------       -----
     Gross profit                                 16,704        18.9     14,392        17.4
Selling, general and administrative expenses       7,085         8.0      4,400         5.3
Stock compensation charge                          2,880         3.3         --         0.0
Depreciation and amortization                      2,256         2.5      2,256         2.7
                                                 -------       -----    -------       -----
     Income from operations                      $ 4,483         5.1%   $ 7,736         9.4%
                                                 =======       =====    =======       =====
</TABLE>

Sales

Sales increased $5.8 million, or 7.0%, from $82.7 million in the 1998 period to
$88.5 million in the 1999 period primarily as a result of higher average sales
prices for ready-mixed concrete in the San Francisco Bay area and increased
sales of pre-cast products and building materials.

Gross Profit

Gross profit increased $2.3 million, or 16.0%, from $14.4 million in the 1998
period to $16.7 million in the 1999 period. Gross margins increased from 17.4%
in the 1998 period to 18.9% in the 1999 period primarily because of higher
average sales prices and the strong marginal contribution from those increased
prices attributable to the portion of our business that is of a fixed-cost
nature.

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased $2.7 million, or 61.0%,
from $4.4 million in the 1998 period to $7.1 million in the 1999 period
primarily because of: (1) additions to the administrative infrastructure of
several of the businesses; (2) higher average compensation levels for operations
personnel; (3) 1999 costs associated with the establishment of U.S. Concrete's
executive management and administrative infrastructure; and (4) 1999
professional fees, travel expenses and other costs attributable to the IPO. As a
percentage of sales, these expenses increased from 5.3% in the 1998 period to
8.0% in the 1999 period.

Stock Compensation Charge

The 1999 stock compensation charge represents a noncash charge related to
400,000 shares of common stock U.S. Concrete issued in December 1998 and March
1999 to management and nonemployee directors at a nominal cost. The amount of
this charge reflected a fair value of $7.20 per share, which represented a 10%
discount from the initial offering price to the public of $8.00 per share in the
IPO.


                                       11
<PAGE>   12


RESULTS OF OPERATIONS - HISTORICAL

The following table sets forth for us selected historical statement of
operations information and that information as a percentage of sales for the
periods indicated. For periods prior to June 1, 1999, the information relates to
Central on a stand-alone basis. For the period beginning June 1, 1999, the
information relates to U.S. Concrete and its subsidiaries on a consolidated
basis and presents Central as the accounting acquirer. Except as we note below,
the consolidation of operating results beginning on June 1, 1999 principally
accounts for the changes in the 1999 periods from the 1998 periods.


<TABLE>
<CAPTION>
                                                     THREE MONTHS ENDED JUNE 30,                   SIX MONTHS ENDED JUNE 30,
                                        -----------------------------------------------   ----------------------------------------
                                                   1999                   1998                    1999                    1998
                                        ----------------------  ---------------------  ----------------------  -------------------
                                                                           (dollars in thousands)
<S>                                     <C>           <C>       <C>            <C>      <C>            <C>      <C>          <C>
Sales                                   $ 27,648      100.0%    $ 15,775       100.0%   $ 40,604       100.0%   $ 25,693     100.0%
Cost of goods sold                        22,150       80.1       12,793        81.1      32,775        80.7      21,330      83.0
                                        --------      -----     --------       -----    --------       -----    --------     -----
     Gross profit                          5,498       19.9        2,982        18.9       7,829        19.3       4,363      17.0
Selling, general and administrative
   expenses                                2,134        7.7        1,056         6.7       3,457         8.5       1,656       6.4
Stock compensation charge                  2,880       10.4           --         0.0       2,880         7.1          --       0.0
Depreciation and amortization                666        2.4          272         1.7         959         2.4         460       1.8
                                        --------      -----     --------       -----    --------       -----    --------     -----
     Income (loss) from operations      $   (182)      (0.6)%   $  1,654        10.5%   $    533         1.3%   $  2,247       8.8%
                                        ========      =====     ========       =====    ========       =====    ========     =====

</TABLE>

Sales

Sales increased $11.9 million, or 75.3%, and $14.9 million, or 58.0%, for the
three- and six-month periods ended June 30, 1999, as compared with the same
periods in 1998.

Gross Profit

Gross profit increased $2.5 million, or 84.4%, and $3.5 million, or 79.4%, for
the three- and six-month periods ended June 30, 1999, as compared with the same
periods in 1998. Gross margins increased from 18.9% in the three months ended
June 30, 1998 to 19.9% in the three months ended June 30, 1999 and increased
from 17.0% in the six months ended June 30, 1998 to 19.3% in the six months
ended June 30, 1999.

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased $1.1 million, or 102.1%,
and $1.8 million, or 108.8%, for the three- and six-month periods ended June 30,
1999, as compared with the same periods in 1998.

Stock Compensation Charge

The 1999 stock compensation charge represents a noncash charge related to
400,000 shares of common stock U.S. Concrete issued in December 1998 and March
1999 to management and nonemployee directors at a nominal cost. The amount of
this charge reflected a fair value of $7.20 per share, which represented a 10%
discount from the initial offering price to the public of $8.00 per share in the
IPO.

LIQUIDITY AND CAPITAL RESOURCES

On May 28, 1999, U.S. Concrete completed its initial public offering, in which
it issued and sold 3.8 million shares of its common stock. Its net proceeds from
the IPO (after underwriting discounts, commissions and offering expenses) were
approximately $24.0 million. Concurrently, U.S. Concrete acquired six operating
businesses in separate transactions for consideration of $22.3 million in cash
and 9.0 million shares of common stock. On June 11, 1999, its underwriters
exercised their over-allotment option to acquire an additional 570,000 shares of
common stock at the offering price of $8.00 per share, providing U.S. Concrete
with $4.3 million (net of underwriting discounts and commissions) of additional
proceeds from the IPO.

On May 28, 1999, U.S. Concrete entered into a $75 million secured revolving
credit facility with a group of banks and borrowed approximately $22.7 million,
principally to refinance outstanding indebtedness of the Acquired Businesses. At
June 30, 1999, $18.7 million was outstanding under the facility.



                                       12
<PAGE>   13

The credit facility is a three-year revolving credit facility of up to $75.0
million, with a $5.0 million sublimit for letters of credit issued on our
behalf, we may use for the following purposes:

             o    finance acquisitions;

             o    working capital; and

             o    for general corporate purposes.

Our subsidiaries have guaranteed the repayment of all amounts due under the
facility, and we secured the facility with the capital stock and assets of our
subsidiaries. The facility will:

             o    require the consent of the lenders for acquisitions;

             o    prohibit the payment of cash dividends by U.S. Concrete;

             o    restrict our ability to incur additional indebtedness; and

             o    require us to comply with stringent financial covenants.

The failure to comply with these covenants and restrictions would constitute an
event of default under the facility. Our borrowing capacity under the facility
will vary from time to time depending on our satisfaction of several financial
tests.

We anticipate that our consolidated cash flow from our operations will exceed
our normal working capital needs, debt service requirements and the amount of
our planned capital expenditures, excluding acquisitions, for at least the next
12 months.

Our growth strategy will require substantial capital. We currently intend to
finance future acquisitions through issuances of our common stock or debt
securities, including convertible debt securities, and borrowings under our
credit facility. Using debt to complete acquisitions could substantially limit
our operational and financial flexibility. The extent to which we will be able
or willing to use our common stock to make acquisitions will depend on its
market value from time to time and the willingness of potential sellers to
accept it as full or partial payment. Using our common stock for this purpose
may result in significant dilution to our then existing stockholders. To the
extent we are unable to use our common stock to make future acquisitions, our
ability to grow will be limited by the extent to which we are able to raise
capital for this purpose, as well as to expand existing operations, through debt
or additional equity financings. If we are unable to obtain additional capital
on acceptable terms, we may be required to reduce the scope of our presently
anticipated expansion, which could materially adversely affect our business and
the value of our common stock.

We cannot accurately predict the timing, size and success of our acquisition
efforts or our associated potential capital commitments.

Changes in working capital accounts and property, plant and equipment between
December 31, 1998 and June 30, 1999 are driven primarily by the acquisitions of
the Acquired Businesses.

YEAR 2000 COMPLIANCE

Many software applications, computer hardware and related equipment and systems
that use embedded technology, such as microprocessors, rely on two digits rather
than four to represent years in performing computations and decision-making
functions. These programs, hardware items and systems may fail on January 1,
2000 or earlier because they misinterpret "00" as the year 1900 rather than
2000. These failures could have an adverse effect on us because of our direct
dependence on our own applications, equipment and systems and our indirect
dependence on those of third parties.

Our year 2000 program consists of the following phases:

             o    identifying all items that may be affected by the year 2000;

             o    investigating those items for year 2000 compliance;

             o    assessing the potential impact of year 2000 noncompliance;

             o    designing solutions for noncompliant items;

             o    repairing and replacing any noncompliant items and testing
                  those improvements; and

             o    contingency planning.

Each business we have acquired has assigned one or more individuals in its
organization year 2000 responsibility. We have also assigned an individual
overall year 2000 responsibility to track and coordinate the efforts of the
individual companies. Although we are following the general steps we outlined
above, we do not consider preparation and



                                       13
<PAGE>   14



maintenance of formal inventories and risk rankings, detailed test plans and
documentation of results necessary because of the small number of information
technology systems each company uses.

Each business we have acquired has completed identification of its
mission-critical information technology hardware and software, including
business applications, operations software, service providers and product
suppliers that may be affected by the year 2000. We are in the process of
identifying the potential impact of embedded technologies on the companies. We
estimate that we have completed 90% of this process and expect to complete it by
September 30, 1999.

We are also contacting various third parties to obtain representations and
assurances that their hardware, embedded technology systems and software which
we use or will impact us are, or will be modified on a timely basis to be, year
2000 compliant. We identified approximately 50 third parties to be contacted,
based on our identification of those persons as being either significant service
providers or materials suppliers to our business. These third parties include
banks, cement and aggregates suppliers, gas, electricity and water suppliers and
telephone companies. All the third parties that have responded have stated that
they are or expect to be year 2000 compliant by the end of 1999. We expect to
have this part of our program completed by September 30, 1999. To date, our
costs associated with assessing and monitoring the progress of third parties in
resolving their year 2000 issues have not been significant, and we do not expect
to incur any material costs in the future relating to this aspect of our year
2000 program.

Most of the businesses we have acquired are in the solution design phase of
their efforts to determine whether noncompliant information hardware and
software systems can be repaired or replaced. We estimate that we have completed
approximately 75% of this phase and expect to complete it by September 30, 1999.

As part of our consolidation of our initial businesses, we are replacing some of
their financial and other systems in order to obtain internal consistency. Some
systems we are replacing happen not to be year 2000 compliant, but we would
replace them in all events this year and are not including the cost of their
replacements as a part of our year 2000 program.

We have decided not to develop formal budgets or perform detailed analysis of
the costs associated with this effort. We based this decision on the low number
of systems that comprise our technical environment and the fact that our year
2000 efforts are being addressed during the normal course of business. We
estimate our external costs of our year 2000 program total approximately $50,000
to date and expect that any additional costs of this program will be nominal. We
expect to pay these costs with the cash flow from our consolidated operations.
We have incurred substantially all these costs in investigating systems for year
2000 compliance and have not incurred any material costs to replace or repair
noncompliant systems. We have not deferred other information technology projects
because of our year 2000 efforts.

We have not yet begun a formal analysis of various failure scenarios or their
potential impact or possible contingency plans. If we identify significant risks
related to year 2000 compliance or our progress deviates from our anticipated
program, we will develop contingency plans as necessary. We expect that we will
develop any necessary contingency plans in the fourth quarter of 1999 and that
these will primarily consist of replacing noncompliant third-party suppliers or
making arrangements with compliant third-party suppliers to back up any delivery
failures and developing backup procedures to handle the failure of any of our
internal systems.

We do not anticipate any material adverse effect from year 2000 failures, but
you have no guarantee that we will achieve total compliance. Factors that give
rise to this uncertainty include our possible failure to identify all
susceptible systems, noncompliance by third parties whose systems and operations
impact us and a possible loss of technical resources to perform the work.

While we do not expect our worst-case year 2000 noncompliance scenarios to
occur, possible effects of such scenarios include:

             o    loss of gas, electricity, water or phone service;

             o    failures or delays in the daily delivery of raw materials;

             o    equipment failures;

             o    an interruption in our ability to collect amounts due from
                  customers; and

             o    loss of accurate accounting records.

Depending on the length of any noncompliance or system failure, any of these
situations could have a material adverse impact on our ability to serve our
customers in a timely manner and result in lost business and revenues or
increased costs.


                                       14
<PAGE>   15



This disclosure is subject to protection under the Year 2000 Information and
Readiness Disclosure Act of 1998, 15 U.S.C. I (1999), as a "Year 2000 Statement"
and "Year 2000 Readiness Disclosure" as that Act defines those terms.

SEASONALITY; FLUCTUATIONS OF QUARTERLY RESULTS

Reflecting the levels of construction activity, the demand for ready-mixed
concrete is highly seasonal. We believe that this demand may be as much as three
times greater in a prime summer month than in a slow winter month and that the
six-month period of May through October is the peak demand period. Consequently,
we expect that our sales generally will be lower in the first and fourth
calendar quarters. Because we incur fixed costs, such as wages, rent and other
expenses throughout the year, we expect our gross profit margins will be
disproportionately lower than our sales in these quarters. Even during
traditional peak periods, sustained periods of inclement weather and other
extreme weather conditions can slow or delay construction and thus slow or delay
our sales. Quarterly results may also be materially affected by the timing of
acquisitions, variations in sales prices, the timing and magnitude of
acquisition assimilation costs and regional economic conditions. Additionally,
the industry can be highly cyclical, and the general condition of the economy
and a variety of other factors beyond our control can affect its level of
activity. Our volume of business may be adversely affected by declines in
construction activity.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

We have not purchased any futures contracts nor have we purchased or held any
derivative financial instruments for trading purposes during the six months
ended June 30, 1999.

Our borrowings under our credit facility are subject to the risk that interest
rates may increase. For example, a 10 percent increase in LIBOR (a benchmark
pursuant to which interest rates applicable to borrowings under the credit
facility may be set) would have increased our pro forma consolidated interest by
$18,000 for the quarter ended June 30, 1999 and $36,000 for the six months ended
June 30, 1999. We have not entered into any interest rate swaps or other hedging
arrangements with respect to the interest obligations under the credit facility.



                                       15
<PAGE>   16




                                     PART II

ITEM 1. LEGAL PROCEEDINGS

We have been from time to time, and currently are, subject to claims and
litigation brought by employees, customers and third parties for personal
injuries, property damages, product defects and delay damages, that have, or
allegedly have, resulted from the conduct of our operations. Currently, we do
not have pending any litigation that, separately or in the aggregate, if
adversely determined, we believe would have a material adverse effect on our
business, financial condition or results of operations. We expect that in the
future we will from time to time be a party to litigation or administrative
proceedings which arise in the normal course of our business.

ITEM 2. CHANGE IN SECURITIES AND USE OF PROCEEDS

(b)      Issuance or Modification of Securities.

Our credit facility prohibits us from (1) redeeming, retiring or otherwise
acquiring, directly or indirectly, any shares of our common stock and (2) making
any dividends or distributions of cash or property to any of our stockholders
without the prior written consent of the lenders.

(c)      Unregistered Sales of Securities.

Set forth below is certain information concerning all sales of securities by
U.S. Concrete during the three-month period ended June 30, 1999 that were not
registered under the Securities Act.

On May 28, 1999, we issued 8,985,288 shares of common stock to the stockholders
of the Acquired Businesses as part of the consideration for the acquisitions of
the Acquired Businesses. These shares of common stock were issued without
registration under the Securities Act in reliance on the exemption provided by
Section 4(2) of the Securities Act.

Also on May 28, 1999, we issued 1,602,255 shares of our common stock on
conversion of the one share of our Class A common stock that was outstanding on
that date. Those shares of common stock were issued without registration under
the Securities Act in reliance on the exemption provided by Section 3(a)(9) of
the Securities Act.

Also on May 28, 1999, we issued warrants to purchase an aggregate of 200,000
shares of our common stock to Scott & Stringfellow, Inc. and Sanders Morris
Mundy Inc., the representatives of the underwriters for the IPO. The warrants
were issued as part of the underwriting consideration in connection with the
IPO. The warrants are exercisable at a purchase price of $8.00 per share of
common stock (which is equivalent to the initial per share offering price to the
public in the IPO). The warrants will expire on May 28, 2002. The warrants were
issued without registration under the Securities Act in reliance on the
exemption provided by Section 4(2) of the Securities Act.

(d)      Use of Proceeds.

The shares of common stock issued and sold in the IPO were registered under the
Securities Act pursuant to a registration statement on Form S-1 (Reg. No.
333-74855), which the SEC declared effective on May 25, 1999. That registration
statement initially registered an indeterminate number of shares of common stock
having a maximum aggregate offering price of $41,515,000. Subsequently, we
determined to offer 3,800,000 shares of common stock in the IPO and granted the
underwriters a 30-day option to purchase up to 570,000 additional shares, solely
to cover over-allotments. The IPO was completed through a syndicate of
underwriters for which Scott & Stringfellow, Inc. and Sanders Morris Mundy Inc.
acted as representatives.

In the IPO, we issued and sold 3,800,000 shares of common stock on May 28, 1999
at an initial public offering price of $8.00 per share, resulting in gross
proceeds of $30,400,000. On June 8, 1999, we issued and sold an additional
570,000 shares of common stock on the exercise in full of the underwriters'
over-allotment option granted in connection with the IPO, resulting in
additional gross proceeds of $4,560,000. Following the closing of the sale of
those shares, the IPO terminated.

From May 25, 1999 through June 30, 1999, we incurred the following expenses for
our own account in connection with the issuance and distribution of the shares
of common stock registered pursuant to our IPO registration statement, none of
which constituted direct or indirect payments to any of our officers, directors
or any of their associates, any person


                                       16
<PAGE>   17


owning 10% or more of U.S. Concrete or any of its affiliates (other expenses
represent a reasonable estimate of actual costs incurred):

Underwriting discounts and commissions     $2,447,200
Finders' fees                                       0
Expenses paid to or for Underwriters                0
Other expenses                             $4,200,000
                                           ----------
         Total expenses                    $6,647,200

The net proceeds we received from the IPO (including the issuance and sale of
the shares of common stock pursuant to the over-allotment option), after
deducting the expenses detailed above, were $28,312,800.

From May 25, 1999 through June 30, 1999, we have applied the following amounts
of our net proceeds from the IPO:



<TABLE>
<CAPTION>

                                                                                  Payment to Officers, Directors
         Use of Proceeds                                      Payment to Others        and 10% Stockholders
         ---------------                                      -----------------   ------------------------------
<S>                                                           <C>                      <C>
         Construction of plant,
           building and  facilities                                 --                        --
         Purchase and installation
           of machinery and
           equipment                                                --                        --
         Purchase of real estate                                    --                        --
         Acquisition of other
           businesses                                           $8,919,533                $13,392,467
         Repayment of indebtedness                              $6,000,800                    --
         Working capital                                            --                        --
         Temporary investments
           (specified below)                                        --                        --


</TABLE>


              Temporary investments consist of money market accounts available
              on a daily basis.


ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

Pursuant to a unanimous written consent signed by each of our stockholders as of
April 19, 1999, our stockholders approved an amendment to our restated
certificate of incorporation to (1) increase the number of authorized shares of
capital stock of U.S. Concrete to 70,000,001 shares, (2) amend the conversion
ratio of the one share of our Class A common stock that was then issued and
outstanding (and which has since been converted into 1,602,255 shares of our
common stock), (3) increase the minimum number of directors who will constitute
our whole Board of Directors to not less than three and to specifically provide
for the election, term and removal of directors, (4) effective after the first
date as of which we had a class or series of capital stock registered under the
Securities Exchange Act of 1934, prohibit action by written consent of our
stockholders and to require that stockholder action may only be taken at an
annual or special meeting of our stockholders, (5) limit the personal liability
of our directors to us or our stockholders, (6) expressly authorize our Board of
Directors to adopt, amend or repeal our Bylaws without any action on the part of
our stockholders, except as applicable law or our Bylaws provide otherwise and
(7) provide for certain procedures when a compromise or arrangement is proposed
between us and our creditors or any class of them and/or between us and our
stockholders or any class of them.

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

(a)      Exhibits.

Exhibit
Number                                      Description

2.1*     --         Agreement and Plan of Reorganization dated as of March 22,
                    1999 by and among U.S. Concrete, OCC Acquisition Inc.,
                    Opportunity Concrete Corporation and the stockholders named
                    therein (Form S-1 (Reg. No. 333-74855), Exhibit 2.1).


                                       17
<PAGE>   18

2.2*     --         Agreement and Plan of Reorganization dated as of March 22,
                    1999 by and among U.S. Concrete, Walker's Acquisition Inc.,
                    Walker's Concrete, Inc. and the stockholders named therein
                    (Form S-1 (Reg. No. 333-74855), Exhibit 2.2).

2.3*     --         Agreement and Plan of Reorganization dated as of March 22,
                    1999 by and among U.S. Concrete, Central Concrete
                    Acquisition Inc., Central Concrete Supply Co., Inc. and the
                    stockholders named therein (Form S-1 (Reg. No. 333-74855),
                    Exhibit 2.3).

2.4*     --         Agreement and Plan of Reorganization dated as of March 22,
                    1999 by and among U.S. Concrete, Bay Cities Acquisition
                    Inc., Bay Cities Building Materials Co., Inc. and the
                    stockholders named therein (Form S-1 (Reg. No. 333-74855),
                    Exhibit 2.4).

2.5*     --         Agreement and Plan of Reorganization dated as of March 22,
                    1999 by and among U.S. Concrete, Baer Acquisition Inc., Baer
                    Concrete, Incorporated and the stockholders named therein
                    (Form S-1 (Reg. No. 333-74855), Exhibit 2.5).

2.6*     --         Agreement and Plan of Reorganization dated as of March 22,
                    1999 by and among U.S. Concrete, Santa Rosa Acquisition,
                    Inc., R.G. Evans/Associates (d/b/a Santa Rosa Cast Products
                    Co.) and the stockholders named therein (Form S-1 (Reg. No.
                    333-74855), Exhibit 2.6).

2.7*    --          Uniform Provisions for the Acquisitions (incorporated into
                    the agreements filed as Exhibits 2.1 through 2.6 hereto)
                    (Form S-1 (Reg. No. 333-74855), Exhibit 2.7).

3.1*    --          Restated Certificate of Incorporation of U.S. Concrete (Form
                    S-1 (Reg. No. 333-74855), Exhibit 3.1).

3.2*     --         Bylaws of U.S. Concrete (Form S-1 (Reg. No. 333-74855),
                    Exhibit 3.2).

4.1*     --         Form of Certificate representing common stock (Form S-1
                    (Reg. No. 333-74855), Exhibit 4.1).

4.2*     --         Form of Registration Rights Agreement by and among U.S.
                    Concrete and the stockholders listed on the signature pages
                    thereto (Form S-1 (Reg. No. 333-74855), Exhibit 4.2).

4.3*     --         Funding Agreement dated as of September 10, 1999 by and
                    between U.S. Concrete and Main Street Merchant Partners II,
                    L.P. (Form S-1 (Reg. No. 333-74855), Exhibit 4.3).

4.4*     --         Rights Agreement by and between U.S. Concrete and American
                    Stock Transfer & Trust Company, including form of Rights
                    Certificate attached as Exhibit B thereto (Form S-1 (Reg.
                    No. 333-74855), Exhibit 4.4).

4.5*     --         Form of Warrant Agreement among U.S. Concrete, Scott &
                    Stringfellow, Inc. and Sanders Morris Mundy, Inc. (Form S-1
                    (Reg. No. 333-74855), Exhibit 1.2).

4.6      --         Credit Agreement, dated as of May 28, 1999, among U.S.
                    Concrete, Inc., as Borrower, the Guarantors named therein
                    and Chase Bank of Texas, National Association, NationsBank,
                    N.A. (D/B/A Bank of America, N.A.), Bank One, Texas, NA,
                    Credit Lyonaiss New York Branch and the other Lenders named
                    therein.

4.7      --         First Amendment to Credit Agreement, dated as of June 30,
                    1999, among U.S. Concrete, Inc., as Borrower, the Guarantors
                    named therein and Chase Bank of Texas, National Association,
                    NationsBank, N.A. (D/B/A Bank of America, N.A.), Bank One,
                    Texas, NA, Credit Lyonaiss New York Branch and the other
                    Lenders named therein.,

                    U.S. Concrete and some of its subsidiaries are parties to
                    debt instruments under which the total amount of securities
                    authorized does not exceed 10% of the total assets of U.S.
                    Concrete and its subsidiaries on a consolidated basis.
                    Pursuant to paragraph 4(iii)(A) of Item 601(b) of Regulation
                    S-K, U.S. Concrete agrees to furnish a copy of those
                    instruments to the SEC on request.

10.1*   --          1999 Incentive Plan of U.S. Concrete (Form S-1 (Reg. No.
                    333-74855), Exhibit 10.1).

10.2*   --          Employment Agreement between U.S. Concrete and William T.
                    Albanese (Form S-1 (Reg. No. 333-74855), Exhibit 10.2).


                                       18
<PAGE>   19



10.3*   --          Form of Employment Agreement between U.S. Concrete and
                    Michael W. Harlan (Form S-1 (Reg. No. 333-74855), Exhibit
                    10.3).

10.4*   --          Form of Employment Agreement between U.S. Concrete and
                    Eugene P. Martineau (Form S-1 (Reg. No. 333-74855), Exhibit
                    10.4).

10.5*   --          Employment Agreement between U.S. Concrete and Michael D.
                    Mitschele (Form S-1 (Reg. No. 333-74855), Exhibit 10.5).

10.6*   --          Employment Agreement between U.S. Concrete and Charles W.
                    Sommer (Form S-1 (Reg. No. 333-74855), Exhibit 10.6).

10.7*   --          Employment Agreement between U.S. Concrete and Neil J.
                    Vannucci (Form S-1 (Reg. No. 333-74855), Exhibit 10.7).

10.8*   --          Employment Agreement between U.S. Concrete and Robert S.
                    Walker (Form S-1 (Reg. No. 333-74855), Exhibit 10.8).

10.9*   --          Form of Indemnification Agreement between U.S. Concrete and
                    each of its directors and officers (Form S-1 (Reg. No.
                    333-74855), Exhibit 10.9).

10.10*  --          Form of Employment Agreement between U.S. Concrete and Terry
                    Green (Form S-1 (Reg. No. 333-74855), Exhibit 10.10).

27.1    --          Financial Data Schedule.

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

* Incorporated by reference to the filing indicated.




(b)      Reports on Form 8-K.

         None.


                                       19
<PAGE>   20




                                    SIGNATURE

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

                                 U.S. CONCRETE, INC.




Dated:  August 13, 1999          /s/ MICHAEL W. HARLAN
                                 ----------------------------------------------
                                 By: Michael W. Harlan
                                     Senior Vice President --
                                     Chief Financial Officer



                                       20
<PAGE>   21


                               INDEX TO EXHIBITS

<TABLE>

<S>                 <C>
4.6      --         Credit Agreement, dated as of May 28, 1999, among U.S.
                    Concrete, Inc., as Borrower, the Guarantors named therein
                    and Chase Bank of Texas, National Association, NationsBank,
                    N.A. (D/B/A Bank of America, N.A.), Bank One, Texas, NA,
                    Credit Lyonaiss New York Branch and the other Lenders named
                    therein.

4.7      --         First Amendment to Credit Agreement, dated as of June 30,
                    1999, among U.S. Concrete, Inc., as Borrower, the Guarantors
                    named therein and Chase Bank of Texas, National Association,
                    NationsBank, N.A. (D/B/A Bank of America, N.A.), Bank One,
                    Texas, NA, Credit Lyonaiss New York Branch and the other
                    Lenders named therein.,

                    U.S. Concrete and some of its subsidiaries are parties to
                    debt instruments under which the total amount of securities
                    authorized does not exceed 10% of the total assets of U.S.
                    Concrete and its subsidiaries on a consolidated basis.
                    Pursuant to paragraph 4(iii)(A) of Item 601(b) of Regulation
                    S-K, U.S. Concrete agrees to furnish a copy of those
                    instruments to the SEC on request.

27.1     --         Financial Data Schedule.


</TABLE>


<PAGE>   1


                                                                     EXHIBIT 4.6

                                CREDIT AGREEMENT

                                      among

                               U.S. CONCRETE, INC.
                                as the Borrower,

                                 THE GUARANTORS,
                                  party hereto,

                                  THE LENDERS,
                                  party hereto


                                       and


                   CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,
                             as Administrative Agent

                                       and
                 NATIONSBANK, N.A. (D/B/A BANK OF AMERICA, N.A.)
                              as Syndication Agent

                                       and
                               BANK ONE, TEXAS, NA
                                   as co-agent

                                       and
                         CREDIT LYONNAIS NEW YORK BRANCH
                                   as co-agent

                                       and

                             CHASE SECURITIES INC.,
                     as Sole Book Manager and Lead Arranger


                                  MAY 28, 1999


                                                          ANDREWS & KURTH L.L.P.
                                             COUNSEL TO THE ADMINISTRATIVE AGENT
<PAGE>   2




                                TABLE OF CONTENTS

<TABLE>
<CAPTION>

                                                                                                               PAGE

<S>                                                                                                            <C>
ARTICLE I - Definitions...........................................................................................1
         SECTION 1.01.  Defined Terms.............................................................................1
         SECTION 1.02.  Classification of Loans and Borrowings...................................................17
         SECTION 1.03.  Terms Generally..........................................................................17
         SECTION 1.04.  Accounting Terms; GAAP...................................................................18

ARTICLE II - The Credits.........................................................................................18
         SECTION 2.01.  Commitments..............................................................................18
         SECTION 2.02.  Loans and Borrowings.....................................................................18
         SECTION 2.03.  Requests for Revolving Borrowings........................................................19
         SECTION 2.04.  Letters of Credit........................................................................20
         SECTION 2.05.  Funding of Borrowings....................................................................24
         SECTION 2.06.  Interest Elections.......................................................................24
         SECTION 2.07.  Termination and Reduction of Commitments.................................................26
         SECTION 2.08.  Repayment of Loans; Evidence of Debt.....................................................26
         SECTION 2.09.  Prepayment of Loans......................................................................27
         SECTION 2.10.  Fees.....................................................................................27
         SECTION 2.11.  Interest.................................................................................28
         SECTION 2.12.  Alternate Rate of Interest...............................................................29
         SECTION 2.13.  Increased Costs..........................................................................30
         SECTION 2.14.  Break Funding Payments...................................................................31
         SECTION 2.15.  Taxes....................................................................................31
         SECTION 2.16.  Payments Generally; Pro Rata Treatment; Sharing of Set-offs..............................32
         SECTION 2.17.  Mitigation Obligations; Replacement of Lenders...........................................34
         SECTION 2.18.  Effect of Increased Costs................................................................35

ARTICLE III - Representations and Warranties.....................................................................35
         SECTION 3.01.  Organization; Powers.....................................................................35
         SECTION 3.02.  Authorization; Enforceability............................................................35
         SECTION 3.03.  Governmental Approvals; No Conflicts.....................................................35
         SECTION 3.04.  Financial Condition; No Material Adverse Change..........................................36
         SECTION 3.05.  Properties...............................................................................36
         SECTION 3.06.  Litigation and Environmental Matters.....................................................37
         SECTION 3.07.  Compliance with Laws and Agreements......................................................37
         SECTION 3.08.  Investment and Holding Company Status....................................................37
         SECTION 3.09.  Taxes....................................................................................38
         SECTION 3.10.  ERISA....................................................................................38
         SECTION 3.11.  Disclosure...............................................................................38
         SECTION 3.12.  Year 2000................................................................................38
</TABLE>

                                       -i-

<PAGE>   3



<TABLE>

<S>                                                                                                             <C>
         SECTION 3.13   Solvency.................................................................................38
         SECTION 3.14   Insurance................................................................................39
         SECTION 3.15.  Registration Statement...................................................................39
         SECTION 3.16.  Subsidiaries.............................................................................39

ARTICLE IV - Conditions..........................................................................................39
         SECTION 4.01.  Effective Date...........................................................................39
         SECTION 4.02.  Each Credit Event........................................................................43

ARTICLE V - Affirmative Covenants................................................................................44
         SECTION 5.01.  Financial Statements; and Other Information..............................................44
         SECTION 5.02.  Notices of Material Events...............................................................46
         SECTION 5.03.  Existence; Conduct of Business; Location.................................................46
         SECTION 5.04.  Payment of Obligations...................................................................46
         SECTION 5.05.  Maintenance of Properties; Insurance.....................................................47
         SECTION 5.06.  Books and Records; Inspection Rights; Audits.............................................47
         SECTION 5.07.  Compliance with Laws.....................................................................48
         SECTION 5.08.  Use of Proceeds and Letters of Credit....................................................48
         SECTION 5.09.  Subsidiaries.............................................................................48
         SECTION 5.10.  Collateral...............................................................................48
         SECTION 5.11.  Employee Agreements......................................................................49
         SECTION 5.12.  Compliance With Leases...................................................................49

ARTICLE VI - Negative Covenants..................................................................................50
         SECTION 6.01.  Indebtedness.............................................................................50
         SECTION 6.02.  Liens....................................................................................50
         SECTION 6.03.  Fundamental Changes......................................................................51
         SECTION 6.04.  Investments, Loans, Advances, Guarantees and Acquisitions................................52
         SECTION 6.05.  Restricted Payments......................................................................52
         SECTION 6.06.  Transactions with Affiliates.............................................................52
         SECTION 6.07.  Restrictive Agreements...................................................................52
         SECTION 6.08.  Financial Ratios.........................................................................53
         SECTION 6.09.  Net Worth................................................................................54
         SECTION 6.10.  Capital Expenditures.....................................................................54
         SECTION 6.11.  Limitation of Acquisitions...............................................................54
         SECTION 6.12.  Hedging Agreement........................................................................56
         SECTION 6.13   Additional Borrowings Under Union Bank Indebtedness......................................56

ARTICLE VII - Events of Default and Remedies.....................................................................56
         SECTION 7.01.  Events of Default........................................................................56
         SECTION 7.02.  Remedies.................................................................................58

ARTICLE VIII - The Administrative Agent..........................................................................59
</TABLE>

                                      -ii-

<PAGE>   4



<TABLE>

<S>                                                                                                             <C>
ARTICLE IX - Miscellaneous.......................................................................................61
         SECTION 9.01.  Notices..................................................................................61
         SECTION 9.02.  Waivers; Amendments......................................................................62
         SECTION 9.03.  Expenses; Indemnity; Damage Waiver.......................................................63
         SECTION 9.04.  Successors and Assigns...................................................................64
         SECTION 9.05.  Survival.................................................................................66
         SECTION 9.06.  Counterparts; Integration; Effectiveness.................................................67
         SECTION 9.07.  Severability.............................................................................67
         SECTION 9.08.  Right of Setoff..........................................................................67
         SECTION 9.09.  Governing Law; Jurisdiction; Consent to Service of Process...............................67
         SECTION 9.10.  WAIVER OF JURY TRIAL.....................................................................68
         SECTION 9.11.  Headings.................................................................................69
         SECTION 9.12.  Confidentiality..........................................................................69
         SECTION 9.13.  Interest Rate Limitation.................................................................69
         SECTION 9.14.  FINAL AGREEMENT OF THE PARTIES...........................................................70
         SECTION 9.15.  Limited Liability........................................................................70

ARTICLE X - Guaranty.............................................................................................71
         SECTION 10.01.  Guaranty................................................................................71
         SECTION 10.02.  Continuing Guaranty.....................................................................71
         SECTION 10.03.  Effect of Debtor Relief Laws............................................................72
         SECTION 10.04.  Partial Waiver of Subrogation...........................................................73
         SECTION 10.05.  Subordination...........................................................................73
         SECTION 10.06.  Waiver..................................................................................74
         SECTION 10.07.  Full Force and Effect...................................................................74
         SECTION 10.08.  Termination of Guaranty.................................................................75
</TABLE>

SCHEDULES:

Schedule 2.01 -- Commitments
Schedule 3.05(b) -- Leases
Schedule 3.05(d) -- Location of Business/Chief Executive Office
Schedule 3.06 -- Disclosed Matters
Schedule 3.16 -- Subsidiaries
Schedule 6.01 -- Existing Indebtedness
Schedule 6.04 -- Existing Investments
Schedule 6.07 -- Existing Restrictions

EXHIBITS:

Exhibit A -- Form of Assignment and Acceptance
Exhibit 6.11 -- Form of Availability Information

                                      -iii-

<PAGE>   5




         THIS AGREEMENT dated as of May 28, 1999, among the Borrower, the
Guarantors, the Lenders, NationsBank, N.A. (D/B/A Bank of America, N.A.) as
syndication agent, Bank One, Texas, NA, as co-agent, Credit Lyonnais New York
Branch, as co-agent and the Administrative Agent(1).

                  The Borrower desires to acquire the Founding Companies, the
acquisition of which is to be financed through an initial public offering. The
Borrower has requested that the Lenders provide the Borrower with a credit
facility pursuant to which the Lenders will commit to make revolving credit
loans of up to $75,000,000, the proceeds of which shall be used (a) to finance
certain of the acquisition costs associated with acquiring the Founding
Companies, (b) to refinance certain existing indebtedness of the Borrower and
the Founding Companies, post acquisition, (c) to finance the acquisition of any
Qualified Company in accordance with the terms hereof and (d) for other general
corporate purposes.

                  In connection therewith, the Administrative Agent has agreed
to serve as the Administrative Agent for the Lenders.

                  NOW THEREFORE, in consideration of the foregoing and the
mutual covenants set forth herein, the Borrower, the Administrative Agent and
the Lenders agree as follows:


                                    ARTICLE I

                                   Definitions

                  SECTION 1.01. Defined Terms. As used in this Agreement, the
following terms have the meanings specified below:

                  "ABR", when used in reference to any Loan or Borrowing, refers
to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Alternate Base Rate.

                  "Acquisition" means any transaction, or any series of related
transactions, consummated on or after the Effective Date, by which the Borrower
or any of its Subsidiaries (a) acquires all or substantially all of the assets
of any Qualified Company, or division thereof, whether through purchase of
assets, merger or otherwise or (b) directly or indirectly acquires all of the
securities of or outstanding ownership interests or control of any Qualified
Company.

                  "Acquisition Documents" means each Agreement and Plan of
Reorganization executed by the Founding Companies, each dated March 22, 1999 and
in each case among the Borrower, the applicable Founding Company and the
stockholders of such Founding Company and all other written agreements,
documents, instruments and certificates now or hereafter executed and

- --------
    (1)   The capitalized terms used in this introductory paragraph are defined
          in Article I, Definitions.

<PAGE>   6



delivered by any Person required to be delivered to consummate any Acquisition
and any and all amendments, supplements, and other modifications thereof.

                  "Add-Back Adjustments" means the pro forma adjustments of the
types referred to in 17 CFR 210.11-02(b)(6).

                  "Adjusted LIBO Rate" means, with respect to any Eurodollar
Borrowing for any Interest Period, an interest rate per annum (rounded upwards,
if necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such
Interest Period multiplied by (b) the Statutory Reserve Rate.

                  "Administrative Agent" means Chase Bank of Texas, National
Association, a national banking association, in its capacity as administrative
agent for the Lenders hereunder.

                  "Administrative Questionnaire" means an Administrative
Questionnaire in a form supplied by the Administrative Agent.

                  "Affiliate" means, with respect to a specified Person, another
Person that directly, or indirectly through one or more intermediaries, Controls
or is Controlled by or is under common Control with the Person specified.

                  "Agreement" means this agreement, as the same may be amended,
amended and restated, modified or supplemented from time to time.

                  "Alternate Base Rate" means, for any day, a rate per annum
equal to the greater of (a) the Prime Rate in effect on such day, and (b) the
Federal Funds Effective Rate in effect on such day plus 1/2 of 1%. Any change in
the Alternate Base Rate due to a change in the Prime Rate or the Federal Funds
Effective Rate shall be effective from and including the effective date of such
change in the Prime Rate or the Federal Funds Effective Rate, respectively.

                  "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment. If
the Commitments have terminated or expired, the Applicable Percentages shall be
determined based upon the Commitments most recently in effect, giving effect to
any assignments.

                  "Applicable Margin" means, for any day during any period
between two successive Financial Statement Delivery Dates commencing on the
first Financial Statement Delivery Date in such period and ending on the day
before the following Financial Statement Delivery Date, with respect to any ABR
Loan, Eurodollar Revolving Loan, or with respect to the commitment fees payable
hereunder, as the case may be, the applicable margin per annum set forth in the
appropriate column below under the caption "ABR Spread", "Eurodollar Spread" or
"Commitment Fee Rate", as the case may be, for the ratio of Funded Debt to
EBITDA for the fiscal period for which such financial statements were delivered
as of the Financial Statement Delivery Date:


                                       -2-

<PAGE>   7





<TABLE>
<CAPTION>

Ratio of Funded Debt to EBITDA              ABR       Eurodollar    Commitment
- ------------------------------             Spread       Spread       Fee Rate
                                           ------     ----------    ----------
<S>                                        <C>        <C>           <C>
> 2.0 to 1.0 < 2.25                         1.25%        2.25%         .50%
- -

> 1.5 to 1.0 < 2.0                          1.00%        2.00%         .50%
- -

> 1.0 to 1.0 < 1.5                           .75%        1.75%        .375%
- -

> 0.5 to 1.0 < 1.0                           .50%        1.50%        .375%
- -

< .05 to 1.0                                 .25%        1.25%         .25%
</TABLE>


                  As of the date hereof and until delivery of the Financial
Statements for the period ending December 31, 1999 required under Section 5.01,
the Applicable Margin for Eurodollar Loans shall be 1.75% per annum, for ABR
Loans, .75% per annum, and the Commitment Fee Rate shall be .375% per annum;
provided, that if the ratio of Funded Debt to EBITDA for the preceding period is
equal to or greater than 1.5 to 1.0, the Applicable Margin for such period shall
be as set forth in the appropriate column above.

                  For purposes of the foregoing, (i) if sufficient information
does not exist to calculate the Applicable Margin, Eurodollar Loans shall not be
available to the Borrower and the Applicable Margin for ABR Loans shall be 1.25%
per annum and for the commitment fee shall be .500%; and (ii) if the Ratio of
Funded Debt to EBITDA shall change upon delivery of any financial statement
required under Section 5.01, such change shall be effective as of the date on
which any such financial statement is delivered, IRRESPECTIVE OF WHETHER IT IS
IN THE MIDDLE OF AN INTEREST PERIOD OR WHEN NOTICE OF SUCH CHANGE SHALL HAVE
BEEN FURNISHED BY THE BORROWER TO THE AGENT AND THE LENDERS PURSUANT TO SECTION
5.01(c) HEREOF OR OTHERWISE. Each change in the Applicable Margin shall apply
during the period commencing on the effective date of such change and ending on
the date immediately preceding the effective date of the next such change.

                  "Assignment and Acceptance" means an assignment and acceptance
entered into by a Lender and an assignee (with the consent of any party whose
consent is required by Section 9.04), and accepted by the Administrative Agent,
in the form of Exhibit A or any other form approved by the Administrative Agent.

                  "Availability Period" means the period from and including the
Effective Date to but excluding the earlier of the Maturity Date and the date of
termination of the Commitments.

                  "Board" means the Board of Governors of the Federal Reserve
System of the United States of America.

                  "Borrower" means U.S. Concrete, Inc., a Delaware corporation.


                                       -3-

<PAGE>   8




                  "Borrowing" means Revolving Loans of the same Type, made,
converted or continued on the same date and, in the case of Eurodollar Loans, as
to which a single Interest Period is in effect.

                  "Borrowing Request" means a request by the Borrower for a
Revolving Borrowing in accordance with Section 2.03.

                  "Business Day" means any day that is not a Saturday, Sunday or
other day on which commercial banks in Houston, Texas are authorized or required
by law to remain closed; provided that, when used in connection with a
Eurodollar Loan, the term "Business Day" shall also exclude any day on which
banks are not open for dealings in dollar deposits in the London interbank
market.

                  "Capital Expenditures" of any Person means the expenditures
for any purchase or other acquisition of any asset (other than for any
Acquisition) which are required to be classified and accounted for as a capital
asset on a consolidated balance sheet of such Person under GAAP and the amount
of such expenditures shall be the capitalized amount thereof determined in
accordance with GAAP.

                  "Capital Lease Obligations" of any Person means the
obligations of such Person to pay rent or other amounts under any lease of (or
other arrangement conveying the right to use) real or personal property, or a
combination thereof, which obligations are required to be classified and
accounted for as capital leases on a balance sheet of such Person under GAAP,
and the amount of such obligations shall be the capitalized amount thereof
determined in accordance with GAAP.

                  "Certificate of Title" means any written instrument which may
be issued solely by and under the authority of any jurisdiction for any vehicle
which is required by such jurisdiction to be licensed or registered.

                  "Change in Control" means (a) the failure of Vincent Foster to
be Chairman of the Board of Directors of the Borrower; (b) occupation of a
majority of the seats (other than vacant seats) on the board of directors of the
Borrower by Persons who were neither (i) nominated by the board of directors of
the Borrower nor (ii) appointed by directors so nominated; or (c) the
acquisition of direct or indirect Control of the Borrower by any Person or group
other than the shareholders of the Borrower beneficially as shown on page 60 of
the Registration Statement.

                  "Change in Law" means (a) the adoption of any law, rule or
regulation after the date of this Agreement, (b) any change in any law, rule or
regulation or in the interpretation or application thereof having the effect of
law by any Governmental Authority after the date of this Agreement or (c)
compliance by any Lender or the Issuing Bank (or, for purposes of Section
2.13(b), by any lending office of such Lender or by such Lender's or the Issuing
Bank's holding company, if any) with any request, guideline or directive (having
the force of law) of any Governmental Authority made or issued after the date of
this Agreement.


                                       -4-

<PAGE>   9




                  "Class", when used in reference to any Loan or Borrowing,
refers to whether such Loan, or the Loans comprising such Borrowing, are
Revolving Loans.

                  "Code" means the Internal Revenue Code of 1986, as amended
from time to time.

                  "Collateral" means all of the material assets of the Borrower
and its Subsidiaries, including, all accounts, inventory, vehicles, equipment
(including rolling stock), furniture, fixtures, general intangibles, capital
stock of subsidiaries and all real property and leasehold estates (including
improvements thereon) held by such Person.

                  "Commitment" means, with respect to each Lender, the
commitment of such Lender to make Revolving Loans and to acquire participations
in Letters of Credit hereunder, expressed as an amount representing the maximum
aggregate amount of such Lender's Revolving Credit Exposure hereunder, as such
commitment may be (a) reduced from time to time pursuant to Section 2.07 and (b)
reduced or increased from time to time pursuant to assignments by or to such
Lender pursuant to Section 9.04. The initial amount of each Lender's Commitment
is set forth on Schedule 2.01, or in the Assignment and Acceptance pursuant to
which such Lender shall have assumed its Commitment, as applicable. The initial
aggregate amount of the Lenders' Commitments is $75,000,000.00.

                  "Control" means the possession, directly or indirectly, of the
power to direct or cause the direction of the management or policies of a
Person, whether through the ability to exercise voting power, by contract or
otherwise. "Controlling" and "Controlled" have meanings correlative thereto.

                  "Default" means any event or condition which constitutes an
Event of Default or which upon notice, lapse of time or both would, unless cured
or waived, become an Event of Default.

                  "Default Rate" has the meaning specified in Section 2.11(c).

                  "Disclosed Matters" means the actions, suits and proceedings
and the environmental matters disclosed in Schedule 3.06.

                  "dollars" or "$" refers to lawful money of the United States
of America.

                  EBITDA means, determined for the most recently ended period of
four full fiscal quarters of the Borrower, the sum of:

                  (a) consolidated operating income of the Borrower before any
deduction for federal, state and local income and franchise taxes, excluding any
extraordinary gains or losses, plus (to the extent deducted in determining
income for such period) the aggregate amount which was deducted for such period
in determining such income for interest expense, depreciation expense and
amortization expense, plus, for each such period that includes the fiscal
quarter ended


                                       -5-

<PAGE>   10



December 31, 1998 of the Borrower, the noncash, nonrecurring stock compensation
charge of the Borrower in the year ended December 31, 1998, as reflected in the
Registration Statement, plus, for each such period that includes the fiscal
quarter ended March 31, 1999 of the Borrower, the noncash, nonrecurring stock
compensation charge of the Borrower in that fiscal quarter as reflected in the
Registration Statement, plus, for each such period that includes the Effective
Date, the Add-Back Adjustments of the Founding Companies from the beginning of
such period to the Effective Date; provided, that for any such period that
includes the Effective Date, EBITDA under this subparagraph (a) will be
determined as if the Borrower and the Founding Companies had been a consolidated
entity from the beginning of such period; and

                  (b) for each Qualified Company whose Acquisition by the
Borrower occurs during the four quarters preceding the date as of which EBITDA
is calculated and with respect to the period beginning four quarters prior to
the calculation of EBITDA through the date of such Acquisition, the sum of the
consolidated operating income of such Qualified Company before any deduction for
federal, state and local income and franchise taxes, excluding any extraordinary
gains or losses, plus the aggregate amount which was deducted for such period in
determining such income for interest expense, depreciation expense and
amortization expense, and plus Add-Back Adjustments of such Qualified Company;
provided, said pre-acquisition EBITDA of any Qualified Company shall be included
in EBITDA only to the extent any such amount (i) is not included in subparagraph
(a) above, (ii) if the statement of operations of such Qualified Company for its
most recently ended fiscal year prior to its Acquisition (or, if that fiscal
year is not a calendar year, for the most recently ended calendar year, at the
option of the Borrower) has been audited by independent public accountants of
recognized standing, is derived from that audited statement and from such
Qualified Company's interim unaudited statement of operations prepared on the
same basis as that audited statement for the period since the year covered in
that audited statement and (iii) if not included in clause (ii) of this proviso,
is (A) approved for inclusion in such calculation by the Required Lenders or (B)
not in excess of $1,000,000 in the aggregate for all such Acquisitions during
any rolling 12-month period.

                  "Effective Date" means the date on which the conditions
specified in Section 4.01 are satisfied (or waived in accordance with Section
9.02).

                  "Environmental Laws" means all final laws, rules, regulations,
codes, ordinances, orders, decrees, judgments, injunctions, notices or binding
agreements issued, promulgated or entered into by any Governmental Authority,
relating in any way to the environment, preservation or reclamation of natural
resources, the management, release or threatened release of any Hazardous
Material or to health and safety matters to the extent binding on the Borrower
and its Subsidiaries and their properties.

                  "Environmental Liability" means any liability, contingent or
otherwise (including any liability for damages, costs of environmental
remediation, fines, penalties or indemnities), of the Borrower or any Subsidiary
directly or indirectly resulting from or based upon (a) violation of any
Environmental Law, (b) the generation, use, handling, transportation, storage,
treatment or disposal

                                       -6-

<PAGE>   11


of any Hazardous Materials in a manner that results in damage to the
environment, (c) exposure to any Hazardous Materials, (d) the release or
threatened release of any Hazardous Materials into the environment or (e) any
contract, agreement or other consensual arrangement pursuant to which liability
is assumed or imposed with respect to any of the foregoing.

                  "ERISA" means the Employee Retirement Income Security Act of
1974, as amended from time to time.

                  "ERISA Affiliate" means any trade or business (whether or not
incorporated) that, together with the Borrower, is treated as a single employer
under Section 414(b) or (c) of the Code or, solely for purposes of Section 302
of ERISA and Section 412 of the Code, is treated as a single employer under
Section 414 of the Code.

                  "ERISA Event" means (a) any "reportable event", as defined in
Section 4043 of ERISA or the regulations issued thereunder with respect to a
Plan (other than an event for which the 30-day notice period is waived); (b) the
existence with respect to any Plan of an "accumulated funding deficiency" (as
defined in Section 412 of the Code or Section 302 of ERISA), whether or not
waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d)
of ERISA of an application for a waiver of the minimum funding standard with
respect to any Plan; (d) the incurrence by the Borrower or any of its ERISA
Affiliates of any liability under Title IV of ERISA with respect to the
termination of any Plan; (e) the receipt by the Borrower or any ERISA Affiliate
from the PBGC or a plan administrator of any notice relating to an intention to
terminate any Plan or Plans or to appoint a trustee to administer any Plan; (f)
the incurrence by the Borrower or any of its ERISA Affiliates of any liability
with respect to the withdrawal or partial withdrawal from any Plan or
Multiemployer Plan; or (g) the receipt by the Borrower or any ERISA Affiliate of
any notice, or the receipt by any Multiemployer Plan from the Borrower or any
ERISA Affiliate of any notice, concerning the imposition of Withdrawal Liability
or a determination that a Multiemployer Plan is, or is expected to be, insolvent
or in reorganization, within the meaning of Title IV of ERISA.

                  "Eurodollar", when used in reference to any Loan or Borrowing,
refers to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Adjusted LIBO Rate.

                  "Event of Default" has the meaning assigned to such term in
Article VII.

                  "Excluded Taxes" means, with respect to the Administrative
Agent, any Lender, the Issuing Bank or any other recipient of any payment to be
made by or on account of any obligation of the Borrower hereunder, (a) income or
franchise taxes imposed on (or measured by) its net income by the United States
of America, or by the jurisdiction under the laws of which such recipient is
organized or in which its principal office is located or, in the case of any
Lender, in which its applicable lending office is located, (b) any branch
profits taxes imposed by the United States of America or any similar tax imposed
by any other jurisdiction in which the Borrower is located and (c) in the case
of a Foreign Lender (other than an assignee pursuant to a request by the
Borrower

                                       -7-

<PAGE>   12

under Section 2.17(b)), any withholding tax that is imposed on amounts payable
to such Foreign Lender at the time such Foreign Lender becomes a party to this
Agreement (or designates a new lending office) or is attributable to such
Foreign Lender's failure to comply with Section 2.15(e), except to the extent
that such Foreign Lender (or its assignor, if any) was entitled, at the time of
designation of a new lending office (or assignment), to receive additional
amounts from the Borrower with respect to such withholding tax pursuant to
Section 2.15(a).

                  "Federal Funds Effective Rate" means, for any day, the
weighted average (rounded upwards, if necessary, to the next 1/100 of 1%) of the
rates on overnight Federal funds transactions with members of the Federal
Reserve System arranged by Federal funds brokers, as published on the next
succeeding Business Day by the Federal Reserve Bank of New York, or, if such
rate is not so published for any day that is a Business Day, the average
(rounded upwards, if necessary, to the next 1/100 of 1%) of the quotations for
such day for such transactions received by the Administrative Agent from three
Federal funds brokers of recognized standing selected by it.

                  "Financial Officer" means the chief executive officer or the
chief financial officer of the Borrower.

                  "Financial Statement Delivery Date" means the earlier of the
date on which the financial statements of the Borrower are delivered or are
required to be delivered to the Administrative Agent and the Lenders pursuant to
Section 5.01(a) or 5.01(b), as the case may be.

                  "Founding Companies" means Central Concrete Supply Co., Inc.,
a California corporation; Walker's Concrete, Inc., a California corporation; Bay
Cities Building Materials Co., Inc., a California corporation; Opportunity
Concrete Corporation, a District of Columbia corporation; Baer Concrete,
Incorporated, a New Jersey corporation; and R.G. Evans/Associates d/b/a/ Santa
Rosa Cast Products Co., a California corporation.

                  "Foreign Lender" means any Lender that is organized under the
laws of a jurisdiction other than that in which the Borrower is located. For
purposes of this definition, the United States of America, each State thereof
and the District of Columbia shall be deemed to constitute a single
jurisdiction.

                  "Funded Debt" means, as to any Person on a consolidated basis,
all Indebtedness for borrowed money evidenced by a note, agreement, debenture,
bond or similar writing and requiring periodic payments of interest and/or
principal, Capitalized Lease Obligations, the aggregate LC Exposure and
Indebtedness evidenced by any Guaranty of Indebtedness other than the Guaranty
of the Indebtedness hereunder.

                  "GAAP" means generally accepted accounting principles in the
United States of America.


                                       -8-

<PAGE>   13


                  "Governmental Authority" means the government of the United
States of America, any other nation or any political subdivision thereof,
whether state or local, and any agency, authority, instrumentality, regulatory
body, court, central bank or other entity exercising executive, legislative,
judicial, taxing, regulatory or administrative powers or functions of or
pertaining to government.

                  "Guaranty" of or by any Person (the "guarantor") means any
obligation, contingent or otherwise, of the guarantor guaranteeing or having the
economic effect of guaranteeing any Indebtedness or other obligation of any
other Person (the "primary obligor") in any manner, whether directly or
indirectly, and including any obligation of the guarantor, direct or indirect,
(a) to purchase or pay (or advance or supply funds for the purchase or payment
of) such Indebtedness or other obligation or to purchase (or to advance or
supply funds for the purchase of) any security for the payment thereof, (b) to
purchase or lease property, securities or services for the purpose of assuring
the owner of such Indebtedness or other obligation of the payment thereof, (c)
to maintain working capital, equity capital or any other financial statement
condition or liquidity of the primary obligor so as to enable the primary
obligor to pay such Indebtedness or other obligation or (d) as an account party
in respect of any letter of credit or letter of guaranty issued to support such
Indebtedness or obligation; provided, that the term Guarantee shall not include
endorsements for collection or deposit in the ordinary course of business.

                  "Guarantors" means the Persons on the signature pages hereto
under the caption "Guarantors" and any other Person that shall become a
Guarantor hereunder pursuant to Section 5.09.

                  "Guaranteed Obligations" has the meaning specified in Section
10.01 hereof.

                  "Hazardous Materials" means all explosive or radioactive
substances or wastes and all hazardous or toxic substances, wastes or other
pollutants, including petroleum or petroleum distillates, asbestos or asbestos
containing materials, polychlorinated biphenyls, radon gas, infectious or
medical wastes and all other substances or wastes of any nature regulated
pursuant to any Environmental Law.

                  "Hedging Agreement" means any foreign currency exchange
agreement, commodity price protection agreement or other currency exchange rate
or commodity price hedging arrangement.

                  "Highest Lawful Rate" means as to any Lender, the maximum
nonusurious rate of interest that, under applicable law, may be contracted for,
taken, reserved, charged or received by such Lender on the Loans or under the
Loan Documents at any time or from time to time. If the maximum rate of interest
which, under applicable law, any of the Lenders is permitted to charge the
Borrower on its Loans shall change after the date hereof, to the extent
permitted by applicable law, the Highest Lawful Rate applicable to such Loans
shall be automatically increased or decreased, as

                                       -9-

<PAGE>   14


the case may be, as of the effective time of such change without notice to the
Borrower or any other Person.

                  "Indebtedness" of any Person means, without duplication, (a)
all obligations of such Person for borrowed money, (b) all obligations of such
Person evidenced by bonds, debentures, notes or similar instruments, (c) all
obligations of such Person upon which interest charges are customarily paid, (d)
all obligations of such Person under conditional sale or other title retention
agreements relating to property acquired by such Person (excluding accounts
payable and accrued liabilities incurred in the ordinary course of business),
(e) all obligations of such Person in respect of the deferred purchase price of
property or services (excluding accounts payable and accrued liabilities
incurred in the ordinary course of business), (f) all Indebtedness of others
secured by any Lien on property owned or acquired by such Person, whether or not
the Indebtedness secured thereby has been assumed, (g) all Guaranties by such
Person of Indebtedness of others, (h) all Capital Lease Obligations of such
Person, (i) all obligations, contingent or otherwise, of such Person as an
account party in respect of Letters of Credit, any other letters of credit,
letters of guaranty supporting Indebtedness and the net amount under any
Interest Rate Risk Indebtedness, any and (j) all obligations, contingent or
otherwise, of such Person in respect of bankers' acceptances. The Indebtedness
of any Person shall include the Indebtedness of any other entity (including any
partnership in which such Person is a general partner) to the extent such Person
is liable therefor as a result of such Person's ownership interest in or other
relationship with such entity, except to the extent the terms of such
Indebtedness provide that such Person is not liable therefor.

                  "Indemnified Taxes" means Taxes other than Excluded Taxes.

                  "Information Memorandum" means the Confidential Information
Memorandum dated April 1999 relating to the Borrower and the Transactions.

                  "Interest Election Request" means a request by the Borrower to
convert or continue a Revolving Borrowing in accordance with Section 2.06.

                  "Interest Payment Date" means (a) with respect to any ABR
Loan, the last day of each March, June, September and December and (b) with
respect to any Eurodollar Loan, the last day of the Interest Period applicable
to the Borrowing of which such Loan is a part and, in the case of a Eurodollar
Borrowing with an Interest Period of more than three months' duration, each day
prior to the last day of such Interest Period that occurs at intervals of three
months' duration after the first day of such Interest Period.

                  "Interest Period" means with respect to any Eurodollar
Borrowing, the period commencing on the date of such Borrowing and ending on the
numerically corresponding day in the calendar month that is one, two, three or
six months thereafter; provided, that (i) if any Interest Period would end on a
day other than a Business Day, such Interest Period shall be extended to the
next succeeding Business Day unless, in the case of a Eurodollar Borrowing only,
such next succeeding Business Day would fall in the next calendar month, in
which case such Interest Period

                                      -10-

<PAGE>   15



shall end on the next preceding Business Day and (ii) any Interest Period
pertaining to a Eurodollar Borrowing that commences on the last Business Day of
a calendar month (or on a day for which there is no numerically corresponding
day in the last calendar month of such Interest Period) shall end on the last
Business Day of the last calendar month of such Interest Period. For purposes
hereof, the date of a Borrowing initially shall be the date on which such
Borrowing is made and, in the case of a Revolving Borrowing, thereafter shall be
the effective date of the most recent conversion or continuation of such
Borrowing.

                  "Interest Rate Risk Agreement" means the program, and all
documents related thereto, for the hedging of interest rate risk provided for in
any interest rate swap agreement, interest rate cap agreement, interest rate
collar agreement or similar arrangement entered into by the Borrower with any
Lender for the purpose of reducing its exposure to interest rate fluctuations in
connection with this Agreement and not for speculative purposes.

                  "Interest Rate Risk Indebtedness" means all obligations and
Indebtedness of the Borrower to one or more of the Lenders with respect to the
program for the hedging of interest rate risk provided for in any Interest Rate
Risk Agreement.

                  "Issuing Bank" means Chase Bank of Texas, National
Association, in its capacity as the issuer of Letters of Credit hereunder, and
its successors in such capacity as provided in Section 2.04(i). The Issuing Bank
may, in its discretion, arrange for one or more Letters of Credit to be issued
by Affiliates of the Issuing Bank, in which case the term "Issuing Bank" shall
include any such Affiliate with respect to Letters of Credit issued by such
Affiliate.

                  "LC Disbursement" means a payment made by the Issuing Bank
pursuant to a Letter of Credit.

                  "LC Exposure" means, at any time, the sum of (a) the aggregate
undrawn amount of all outstanding Letters of Credit at such time plus (b) the
aggregate amount of all LC Disbursements that have not yet been reimbursed by or
on behalf of the Borrower at such time. The LC Exposure of any Lender at any
time shall be its Applicable Percentage of the total LC Exposure at such time.

                  "Leases" means those certain lease agreements executed by any
Person, as lessor, and the Borrower or any Subsidiary, as lessee (or any lease
agreement, sublease or other similar arrangement entered into by the Borrower or
any Subsidiary after the Effective Date) under the terms of which the Borrower
or any Subsidiary occupies or uses real property and any improvements located
thereon in the ordinary course of its business.

                  "Lenders" means the Persons listed on Schedule 2.01 and any
other Person that shall have become a party hereto pursuant to an Assignment and
Acceptance, other than any such Person that ceases to be a party hereto pursuant
to an Assignment and Acceptance.

                  "Letter of Credit" means any letter of credit issued pursuant
to this Agreement.



                                      -11-

<PAGE>   16



                  "LIBO Rate" means, with respect to any Eurodollar Borrowing
for any Interest Period, the rate appearing on Page 3750 of the Dow Jones Market
Service (or on any successor or substitute page of such Service, or any
successor to or substitute for such Service, providing rate quotations
comparable to those currently provided on such page of such Service, as
determined by the Administrative Agent from time to time for purposes of
providing quotations of interest rates applicable to dollar deposits in the
London interbank market) at approximately 11:00 a.m., London time, two Business
Days prior to the commencement of such Interest Period, as the rate for dollar
deposits with a maturity comparable to such Interest Period. In the event that
such rate is not available at such time for any reason, then the "LIBO Rate"
with respect to such Eurodollar Borrowing for such Interest Period shall be the
rate at which dollar deposits of $5,000,000 and for a maturity comparable to
such Interest Period are offered by the principal London office of the
Administrative Agent in immediately available funds in the London interbank
market at approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period.

                  "Lien" means, with respect to any asset, (a) any mortgage,
deed of trust, lien, pledge, hypothecation, encumbrance, charge or security
interest in, on or of such asset, (b) the interest of a vendor or a lessor under
any conditional sale agreement, capital lease or title retention agreement
relating to such asset and (c) in the case of securities, any purchase option,
call or similar right of a third party with respect to such securities.

                  "Loan Documents" means this Agreement, the Notes, the Security
Documents, any Interest Rate Risk Agreement with any of the Lenders, any
applications or requests for Letters of Credit hereunder and all documents
related thereto.

                  "Loans" means the loans made by the Lenders to the Borrower
pursuant to this Agreement.

                  "Maintenance Capital Expenditure" of any Person means the
actual depreciation expense required to be classified and accounted for as
depreciation expense on a consolidated income statement of such Person under
GAAP.

                  "Material Adverse Effect" means a material adverse effect on
(a) the business, assets, operations, or condition, financial or otherwise, of
the Borrower and its Subsidiaries taken as a whole, (b) the ability of the
Borrower and its Subsidiaries taken as a whole, to perform any of its
obligations under this Agreement or (c) the material rights of or benefits
available to the Lenders under this Agreement to enforce collection of the
Obligations.

                  "Material Indebtedness" means Indebtedness (other than the
Loans and Letters of Credit), or obligations in respect of one or more Hedging
Agreements or Interest Rate Risk Agreements, of any one or more of the Borrower
and its Subsidiaries in an aggregate principal amount exceeding $500,000
outstanding. For purposes of determining Material Indebtedness, the "principal
amount" of the obligations of the Borrower or any Subsidiary in respect of any
Hedging


                                      -12-

<PAGE>   17


Agreement at any time shall be the maximum aggregate amount (giving effect to
any netting agreements) that the Borrower or such Subsidiary would be required
to pay if such Hedging Agreement were terminated at such time.

                  "Maturity Date" means three (3) years from the date of
execution hereof.

                  "Maximum Guaranteed Amount" means the maximum amount which any
Subsidiary could pay or agree to pay under its Guaranty of the Obligations
contained in Article X hereof without having such agreement or payment set aside
as a fraudulent transfer or similar action under the Bankruptcy Code Title II
(United States Code) or applicable state or foreign law.

                  "Multiemployer Plan" means a multiemployer plan as defined in
Section 4001(a)(3) of ERISA.

                  "Note" means the promissory note executed by the Borrower
payable to each Lender in the amount of such Lender's Commitment.

                  "Obligations" means all obligations of the Borrower and each
of its Subsidiaries hereunder and under each of the other Loan Documents for the
payment of money the performance of any action or any other type of obligation.

                  "Other Taxes" means any and all present or future stamp or
documentary taxes or any other excise or property taxes, charges or similar
levies arising from any payment made hereunder or from the execution, delivery
or enforcement of, or otherwise with respect to, this Agreement.

                  "PBGC" means the Pension Benefit Guaranty Corporation referred
to and defined in ERISA and any successor entity performing similar functions.

                  "Permitted Encumbrances" means:

                  (a) Liens imposed by law for taxes that are not yet due or are
         being contested or otherwise exist in compliance with Section 5.04;

                  (b) carriers', warehousemen's, mechanics', materialmen's,
         repairmen's and other like Liens imposed by law, arising in the
         ordinary course of business or are being contested or otherwise exist
         in compliance with Section 5.04;

                  (c) pledges and deposits made in the ordinary course of
         business in compliance with workers' compensation, unemployment
         insurance and other social security laws or regulations;



                                      -13-

<PAGE>   18


                  (d) deposits to secure the performance of bids, trade
         contracts, leases, statutory obligations, surety and appeal bonds,
         performance bonds and other obligations of a like nature, in each case
         in the ordinary course of business;

                  (e) judgment liens in respect of judgments that do not
         constitute an Event of Default under clause (k) of Section 7.01; and

                  (f) easements, zoning restrictions, rights-of-way and similar
         encumbrances on real property imposed by law or arising in the ordinary
         course of business that do not secure any Indebtedness and do not
         materially detract from the value of the affected property or interfere
         with the ordinary conduct of business of the Borrower and its
         Subsidiaries, taken as a whole, including all of such as disclosures in
         the preliminary title reports prepared by Chicago Title Insurance
         Company in connection with the Security Documents executed and
         delivered pursuant to Section 4.01(c)(iv);

provided that the term "Permitted Encumbrances" shall not include any Lien
securing Indebtedness.

                  "Permitted Investments" means:

                  (a) direct obligations of, or obligations the principal of and
         interest on which are unconditionally guaranteed by, the United States
         of America (or by any agency thereof to the extent such obligations are
         backed by the full faith and credit of the United States of America),
         in each case maturing within one year from the date of acquisition
         thereof;

                  (b) investments in commercial paper maturing within 270 days
         from the date of acquisition thereof and having, at such date of
         acquisition, the highest credit rating obtainable from S&P or from
         Moody's; and

                  (c) investments in certificates of deposit, banker's
         acceptances and time deposits maturing within 180 days from the date of
         acquisition thereof issued or guaranteed by or placed with, and money
         market deposit accounts issued or offered by, any domestic office of
         any commercial bank organized under the laws of the United States of
         America or any State thereof which has a combined capital and surplus
         and undivided profits of not less than $500,000,000.

                  (d) accounts receivable and payroll advances in the ordinary
         course of business;

                  (e) other advances and loans to officers and employees of the
         Borrower or any Subsidiary, so long as the aggregate principal amount
         of such advances and loans does not exceed $250,000 at any one time
         outstanding;

                  (f) Interest Rate Risk Indebtedness with respect to any
         Indebtedness that is permitted by the terms of this Agreement to be
         outstanding; and

                                      -14-

<PAGE>   19



                  (g) Investments in prepaid expenses, negotiable instruments
         held for collection and lease, utility, worker's compensation and
         performance and other similar deposits in the ordinary course of
         business.

                  "Permitted Liens" means, collectively, Permitted Encumbrances
and Liens permitted under Section 6.02 of this Agreement.

                  "Person" means any natural person, corporation, limited
liability company, trust, joint venture, association, company, partnership,
Governmental Authority or other entity.

                  "Plan" means any employee pension benefit plan (other than a
Multiemployer Plan) subject to the provisions of Title IV of ERISA or Section
412 of the Code or Section 302 of ERISA, and in respect of which the Borrower or
any ERISA Affiliate is (or, if such plan were terminated, would under Section
4069 of ERISA be deemed to be) an "employer" as defined in Section 3(5) of
ERISA.

                  "Pledge Agreements" means (a) that certain Pledge Agreement
dated May 28, 1999 executed by the Borrower to the Administrative Agent for the
benefit of itself and the Lenders pledging the shares of stock of each of its
Subsidiaries as security for its Obligations and (b) that certain Pledge
Agreement dated May 28, 1999 executed by Bay Cities Building Materials Co., Inc.
to the Administrative Agent for the benefit of itself and the Lenders pledging
the shares of stock of its subsidiary as security for its guaranty contained in
Article X of this Agreement.

                  "Prime Rate" means the rate of interest per annum publicly
announced from time to time by Chase Bank of Texas, National Association as its
prime rate in effect at its principal office in Houston, Texas; each change in
the Prime Rate shall be effective from and including the date such change is
publicly announced as being effective.

                  "Qualified Company" means any provider of ready-mixed
concrete, concrete products or related products and services to the construction
industry in major markets in the United States.

                  "Register" has the meaning set forth in Section 9.04.

                  "Registration Statement" means that certain Registration
Statement of the Borrower on Form S-1 filed with the SEC on March 23, 1999, as
amended prior to the Effective Date.

                  "Related Parties" means, with respect to any specified Person,
such Person's Affiliates and the respective directors, officers, employees,
agents and advisors of such Person and such Person's Affiliates.

                  "Required Lenders" means, at any time, Lenders having
Revolving Credit Exposures and unused Commitments representing at least 662/3%
of the sum of the total Revolving Credit Exposures and unused Commitments at
such time.


                                      -15-

<PAGE>   20



                  "Restricted Payment" means any dividend or other distribution
(whether in cash, securities or other property, except distributions payable in
capital stock) with respect to any shares of any class of capital stock of the
Borrower or any Subsidiary (other than distributions to the Borrower or any
Subsidiary), or any payment (whether in cash, securities or other property),
including any sinking fund or similar deposit, on account of the purchase,
redemption, retirement, acquisition, cancellation or termination of any such
shares of capital stock of the Borrower, any option, warrant or other right to
acquire any such shares of capital stock of the Borrower or any debt of the
Borrower subordinated to the Obligations.

                  "Revolving Credit Exposure" means, with respect to any Lender
at any time, the sum of the outstanding principal amount of such Lender's
Revolving Loans and its LC Exposure at such time.

                  "Revolving Loan" means a Loan made pursuant to Section 2.03.

                  "Santa Rosa" means R.G. Evans/Associates dba Santa Rosa Cast
Products Co., a California corporation.

                  "Security Agreement" means that certain Security Agreement
dated May 28, 1999 executed by each of the Borrower and its direct and indirect
subsidiaries to the Administrative Agent for the benefit of itself and the
Lenders.

                  "Security Documents" means the guaranty of each of the
Founding Companies contained in Article X hereof, together with any guaranty
delivered pursuant to Section 5.09 hereof, the Pledge Agreement, the Security
Agreement and all those certain security agreements, pledge agreements,
mortgages, deeds of trust, guaranty agreements, landlord's consents, estoppels,
assignments, UCC financing statements and all similar documents executed by any
Person in connection herewith including those listed in Section 4.01(c) hereof,
together with any agreements delivered pursuant to Section 5.09 or Section 5.10
hereof, granting to the Administrative Agent for the benefit of the Lenders a
first Lien and security interest in substantially all of the Collateral of the
Borrower and its Subsidiaries as security for the Obligations, subject to
Permitted Liens.

                  "Statutory Reserve Rate" means a fraction (expressed as a
decimal), the numerator of which is the number one and the denominator of which
is the number one minus the aggregate of the maximum reserve percentages
(including any marginal, special, emergency or supplemental reserves) for
eurocurrency funding (currently referred to as "Eurocurrency Liabilities" in
Regulation D of the Board). Such reserve percentages shall include those imposed
pursuant to such Regulation D. Eurodollar Loans shall be deemed to constitute
eurocurrency funding and to be subject to such reserve requirements without
benefit of or credit for proration, exemptions or offsets that may be available
from time to time to any Lender under such Regulation D or any comparable
regulation. The Statutory Reserve Rate shall be adjusted automatically on and as
of the effective date of any change in any reserve percentage.


                                      -16-

<PAGE>   21



                  "subsidiary" means, with respect to any Person (the "parent")
at any date, any corporation, limited liability company, partnership,
association or other entity the accounts of which would be consolidated with
those of the parent in the parent's consolidated financial statements if such
financial statements were prepared in accordance with GAAP as of such date, as
well as any other corporation, limited liability company, partnership,
association or other entity of which securities or other ownership interests
representing more than 50% of the equity or more than 50% of the ordinary voting
power or, in the case of a partnership, more than 50% of the general partnership
interests are, as of such date, owned, controlled or held.

                  "Subsidiary" means any direct or indirect subsidiary of the
Borrower.

                  "Taxes" means any and all present or future taxes, levies,
imposts, duties, deductions, charges or withholdings imposed by any Governmental
Authority.

                  "Transactions" means the execution, delivery and performance
by the Borrower of this Agreement, the borrowing of Loans, the use of the
proceeds thereof and the issuance of Letters of Credit hereunder.

                  "Type", when used in reference to any Loan or Borrowing,
refers to whether the rate of interest on such Loan, or on the Loans comprising
such Borrowing, is determined by reference to the Adjusted LIBO Rate or the
Alternate Base Rate.

                  "Withdrawal Liability" means liability to a Multiemployer Plan
as a result of a complete or partial withdrawal from such Multiemployer Plan, as
such terms are defined in Part I of Subtitle E of Title IV of ERISA.

                  SECTION 1.02. Classification of Loans and Borrowings. For
purposes of this Agreement, Loans may be classified and referred to by Class
(e.g., a "Revolving Loan") or by Type (e.g., a "Eurodollar Loan") or by Class
and Type (e.g., a "Eurodollar Revolving Loan"). Borrowings also may be
classified and referred to by Class (e.g., a "Revolving Borrowing") or by Type
(e.g., a "Eurodollar Borrowing") or by Class and Type (e.g., a "Eurodollar
Revolving Borrowing").

                  SECTION 1.03. Terms Generally. The definitions of terms herein
shall apply equally to the singular and plural forms of the terms defined.
Whenever the context may require, any pronoun shall include the corresponding
masculine, feminine and neuter forms. The words "include", "includes" and
"including" shall be deemed to be followed by the phrase "without limitation".
The word "will" shall be construed to have the same meaning and effect as the
word "shall". Unless the context requires otherwise (a) any definition of or
reference to any agreement, instrument or other document herein shall be
construed as referring to such agreement, instrument or other document as from
time to time amended, supplemented or otherwise modified (subject to any
restrictions on such amendments, supplements or modifications set forth herein),
(b) any reference herein to any Person shall be construed to include such
Person's successors and assigns, (c) the words "herein", "hereof" and
"hereunder", and words of similar import, shall be construed



                                      -17-

<PAGE>   22

to refer to this Agreement in its entirety and not to any particular provision
hereof, (d) all references herein to Articles, Sections, Exhibits and Schedules
shall be construed to refer to Articles and Sections of, and Exhibits and
Schedules to, this Agreement and (e) the words "asset" and "property" shall be
construed to have the same meaning and effect and to refer to any and all
tangible and intangible assets and properties, including cash, securities,
accounts and contract rights.

                  SECTION 1.04. Accounting Terms; GAAP. Except as otherwise
expressly provided herein, all terms of an accounting or financial nature shall
be construed in accordance with GAAP, as in effect from time to time; provided
that, if the Borrower notifies the Administrative Agent that the Borrower
requests an amendment to any provision hereof to eliminate the effect of any
change occurring after the date hereof in GAAP or in the application thereof on
the operation of such provision (or if the Administrative Agent notifies the
Borrower that the Required Lenders request an amendment to any provision hereof
for such purpose), regardless of whether any such notice is given before or
after such change in GAAP or in the application thereof, then such provision
shall be interpreted on the basis of GAAP as in effect and applied immediately
before such change shall have become effective until such notice shall have been
withdrawn or such provision amended in accordance herewith.


                                   ARTICLE II

                                   The Credits

                  SECTION 2.01. Commitments. Subject to the terms and conditions
set forth herein, each Lender agrees to make Revolving Loans to the Borrower
from time to time during the Availability Period in an aggregate principal
amount that will not result in (a) such Lender's Revolving Credit Exposure
exceeding such Lender's Commitment or (b) the sum of the total Revolving Credit
Exposures exceeding the total Commitments. Within the foregoing limits and
subject to the terms and conditions set forth herein, the Borrower may borrow,
prepay and reborrow Revolving Loans.

                  SECTION 2.02. Loans and Borrowings. (a) Each Revolving Loan
shall be made as part of a Borrowing consisting of Revolving Loans made by the
Lenders ratably in accordance with their respective Commitments. The failure of
any Lender to make any Loan required to be made by it shall not relieve any
other Lender of its obligations hereunder; provided that the Commitments of the
Lenders are several and no Lender shall be responsible for any other Lender's
failure to make Loans as required.

                  (b) Subject to Section 2.12, each Revolving Borrowing shall be
comprised entirely of ABR Loans or Eurodollar Loans as the Borrower may request
in accordance herewith. Each Lender at its option may make any Eurodollar Loan
by causing any domestic or foreign branch or Affiliate of such Lender to make
such Loan; provided that any exercise of such option shall not affect the
obligation of the Borrower to repay such Loan in accordance with the terms of
this Agreement.

                                      -18-

<PAGE>   23



                  (c) At the commencement of each Interest Period for any
Eurodollar Revolving Borrowing, such Borrowing shall be in an aggregate amount
that is an integral multiple of $500,000 and not less than $1,000,000, unless
such Borrowing represents a Borrowing of all of the unused Commitment. At the
time that each ABR Revolving Borrowing is made, such Borrowing shall be in an
aggregate amount that is an integral multiple of $500,000 and not less than
$1,000,000; provided that an ABR Revolving Borrowing may be in an aggregate
amount that is equal to the entire unused balance of the total Commitments or
that is required to finance the reimbursement of an LC Disbursement as
contemplated by Section 2.04(e). Borrowings of more than one Type and Class may
be outstanding at the same time; provided that there shall not at any time be
more than a total of 7 Eurodollar Revolving Borrowings outstanding.

                  (d) Notwithstanding any other provision of this Agreement, the
Borrower shall not be entitled to request, or to elect to convert or continue,
any Borrowing if the Interest Period requested with respect thereto would end
after the Maturity Date.

                  SECTION 2.03. Requests for Revolving Borrowings. To request a
Revolving Borrowing, the Borrower shall notify the Administrative Agent of such
request by telephone (a) in the case of a Eurodollar Borrowing, not later than
11:00 a.m., Houston, Texas time, three Business Days before the date of the
proposed Borrowing or (b) in the case of an ABR Borrowing, not later than 10:00
a.m., Houston, Texas time, on the date of the proposed Borrowing; provided that
any such notice of an ABR Revolving Borrowing to finance the reimbursement of an
LC Disbursement as contemplated by Section 2.04(e) may be given not later than
10:00 a.m., Houston, Texas time, on the date of the proposed Borrowing. Each
such telephonic Borrowing Request shall be irrevocable and shall be confirmed
promptly by hand delivery or telecopy to the Administrative Agent of a written
Borrowing Request in a form approved by the Administrative Agent and signed by
the Borrower. Each such telephonic and written Borrowing Request shall specify
the following information in compliance with Section 2.02:

                  (i)   the aggregate amount of the requested Borrowing;

                  (ii)  the date of such Borrowing, which shall be a Business
         Day;

                  (iii) whether such Borrowing is to be an ABR Borrowing or a
         Eurodollar Borrowing;

                  (iv)  in the case of a Eurodollar Borrowing, the initial
         Interest Period to be applicable thereto, which shall be a period
         contemplated by the definition of the term "Interest Period"; and

                  (v)   the location and number of the account to which funds
         are to be disbursed, which shall comply with the requirements of
         Section 2.05.


                                      -19-

<PAGE>   24


If no election as to the Type of Revolving Borrowing is specified, then the
requested Revolving Borrowing shall be an ABR Borrowing. If no Interest Period
is specified with respect to any requested Eurodollar Revolving Borrowing, then
the Borrower shall be deemed to have selected an Interest Period of one month's
duration. Promptly following receipt of a Borrowing Request in accordance with
this Section, the Administrative Agent shall advise each Lender of the details
thereof and of the amount of such Lender's Loan to be made as part of the
requested Borrowing.

                  SECTION 2.04. Letters of Credit. (a) General. Subject to the
terms and conditions set forth herein, the Borrower may request the issuance of
Letters of Credit for its own account, in a form reasonably acceptable to the
Administrative Agent and the Issuing Bank, at any time and from time to time
during the Availability Period. In the event of any inconsistency between the
terms and conditions of this Agreement and the terms and conditions of any form
of letter of credit application or other agreement submitted by the Borrower to,
or entered into by the Borrower with, the Issuing Bank relating to any Letter of
Credit, the terms and conditions of this Agreement shall control.

                  (b) Notice of Issuance, Amendment, Renewal, Extension; Certain
Conditions. To request the issuance of a Letter of Credit (or the amendment,
renewal or extension of an outstanding Letter of Credit), the Borrower shall
hand deliver or telecopy (or transmit by electronic communication, if
arrangements for doing so have been approved by the Issuing Bank) to the Issuing
Bank and the Administrative Agent (reasonably in advance of the requested date
of issuance, amendment, renewal or extension) a notice requesting the issuance
of a Letter of Credit, or identifying the Letter of Credit to be amended,
renewed or extended, and specifying the date of issuance, amendment, renewal or
extension (which shall be a Business Day), the date on which such Letter of
Credit is to expire (which shall comply with paragraph (c) of this Section), the
amount of such Letter of Credit, the name and address of the beneficiary thereof
and such other information as shall be necessary to prepare, amend, renew or
extend such Letter of Credit. If requested by the Issuing Bank, the Borrower
also shall submit a letter of credit application on the Issuing Bank's standard
form in connection with any request for a Letter of Credit. A Letter of Credit
shall be issued, amended, renewed or extended only if (and upon issuance,
amendment, renewal or extension of each Letter of Credit the Borrower shall be
deemed to represent and warrant that), after giving effect to such issuance,
amendment, renewal or extension (and any substantially contemporaneous
amendment, reduction or release of any LC Exposure) (i) the LC Exposure shall
not exceed $5,000,000.00 and (ii) the sum of the total Revolving Credit
Exposures shall not exceed the total Commitments.

                  (c) Expiration Date. Each Letter of Credit shall expire at or
prior to the close of business on the earlier of (i) the date one year after the
date of the issuance of such Letter of Credit (or, in the case of any renewal or
extension thereof, one year after such renewal or extension) and (ii) the date
that is five Business Days prior to the Maturity Date.

                  (d) Participations. By the issuance of a Letter of Credit (or
an amendment to a Letter of Credit increasing the amount thereof) and without
any further action on the part of the

                                      -20-

<PAGE>   25


Issuing Bank or the Lenders, the Issuing Bank hereby grants to each Lender, and
each Lender hereby acquires from the Issuing Bank, a participation in such
Letter of Credit equal to such Lender's Applicable Percentage of the aggregate
amount available to be drawn under such Letter of Credit. In consideration and
in furtherance of the foregoing, each Lender hereby absolutely and
unconditionally agrees to pay to the Administrative Agent, for the account of
the Issuing Bank, such Lender's Applicable Percentage of each LC Disbursement
made by the Issuing Bank and not reimbursed by the Borrower on the date due as
provided in paragraph (e) of this Section, or of any reimbursement payment
required to be refunded to the Borrower for any reason. Each Lender acknowledges
and agrees that its obligation to acquire participations pursuant to this
paragraph in respect of Letters of Credit is absolute and unconditional and
shall not be affected by any circumstance whatsoever, including any amendment,
renewal or extension of any Letter of Credit or the occurrence and continuance
of a Default or reduction or termination of the Commitments, and that each such
payment shall be made without any offset, abatement, withholding or reduction
whatsoever.

                  (e) Reimbursement. If the Issuing Bank shall make any LC
Disbursement in respect of a Letter of Credit, the Borrower shall reimburse such
LC Disbursement by paying to the Administrative Agent an amount equal to such LC
Disbursement not later than 12:00 noon, Houston, Texas time, on the date that
such LC Disbursement is made, if the Borrower shall have received notice of such
LC Disbursement prior to 10:00 a.m., Houston, Texas time, on such date, or, if
such notice has not been received by the Borrower prior to such time on such
date, then not later than 12:00 noon, Houston, Texas time, on (i) the Business
Day that the Borrower receives such notice, if such notice is received prior to
10:00 a.m., Houston, Texas time, on the day of receipt, or (ii) the Business Day
immediately following the day that the Borrower receives such notice, if such
notice is not received prior to such time on the day of receipt. If the Borrower
fails to make such payment when due, the Administrative Agent shall notify each
Lender of the applicable LC Disbursement, the payment then due from the Borrower
in respect thereof and such Lender's Applicable Percentage thereof. Promptly
following receipt of such notice, each Lender shall pay to the Administrative
Agent its Applicable Percentage of the payment then due from the Borrower, in
the same manner as provided in Section 2.05 with respect to Loans made by such
Lender (and Section 2.05 shall apply, mutatis mutandis, to the payment
obligations of the Lenders), and the Administrative Agent shall promptly pay to
the Issuing Bank the amounts so received by it from the Lenders. Promptly
following receipt by the Administrative Agent of any payment from the Borrower
pursuant to this paragraph, the Administrative Agent shall distribute such
payment to the Issuing Bank or, to the extent that Lenders have made payments
pursuant to this paragraph to reimburse the Issuing Bank, then to such Lenders
and the Issuing Bank as their interests may appear. Any payment made by a Lender
pursuant to this paragraph to reimburse the Issuing Bank for any LC Disbursement
shall not constitute a Loan and shall not relieve the Borrower of its obligation
to reimburse such LC Disbursement.

                  (f) Obligations Absolute. The Borrower's obligation to
reimburse LC Disbursements as provided in paragraph (e) of this Section shall be
absolute, unconditional and irrevocable, and shall be performed strictly in
accordance with the terms of this Agreement under

                                      -21-

<PAGE>   26



any and all circumstances whatsoever and irrespective of (i) any lack of
validity or enforceability of any Letter of Credit or this Agreement, or any
term or provision therein, (ii) any draft or other document presented under a
Letter of Credit proving to be forged, fraudulent or invalid in any respect or
any statement therein being untrue or inaccurate in any respect, (iii) payment
by the Issuing Bank under a Letter of Credit against presentation of a draft or
other document that does not comply with the terms of such Letter of Credit, or
(iv) any other event or circumstance whatsoever, whether or not similar to any
of the foregoing, that might, but for the provisions of this Section, constitute
a legal or equitable discharge of, or provide a right of setoff against, the
Borrower's obligations hereunder other than any matter arising out of the gross
negligence or willful misconduct of the Issuing Bank, the Administrative Agent
or any of their employees, officers, agents, successors and assigns. Neither the
Administrative Agent, the Lenders nor the Issuing Bank, nor any of their Related
Parties, shall have any liability or responsibility by reason of or in
connection with the issuance or transfer of any Letter of Credit or any payment
or failure to make any payment thereunder (irrespective of any of the
circumstances referred to in the preceding sentence), or any error, omission,
interruption, loss or delay in transmission or delivery of any draft, notice or
other communication under or relating to any Letter of Credit (including any
document required to make a drawing thereunder), any error in interpretation of
technical terms or any consequence arising from causes beyond the control of the
Issuing Bank; provided that the foregoing shall not be construed to excuse the
Issuing Bank from liability to the Borrower to the extent of any direct damages
(as opposed to consequential damages, claims in respect of which are hereby
waived by the Borrower to the extent permitted by applicable law) suffered by
the Borrower that are caused by the Issuing Bank's failure to exercise care when
determining whether drafts and other documents presented under a Letter of
Credit comply with the terms thereof. The parties hereto expressly agree that,
in the absence of gross negligence or wilful misconduct on the part of the
Issuing Bank, the Issuing Bank shall be deemed to have exercised care in each
such determination. In furtherance of the foregoing and without limiting the
generality thereof, the parties agree that, with respect to documents presented
which appear on their face to be in substantial compliance with the terms of a
Letter of Credit, the Issuing Bank may, acting in good faith, either accept and
make payment upon such documents without responsibility for further
investigation, regardless of any notice or information to the contrary, or
refuse to accept and make payment upon such documents if such documents are not
in strict compliance with the terms of such Letter of Credit. Any standby Letter
of Credit issued hereunder shall be subject to the International Standby
Practices (ISP 98) (as used in this Section, the "ISP"), all documentary Letters
of Credit issued hereunder shall be subject to the Uniform Customs and Practice
for Documentary Credits (1993 Revision), International Chamber of Commerce,
Publication No. 500 (as used in this Section, the "UCP") and, all Letters of
Credit to the extent not inconsistent therewith, shall be subject to the Uniform
Commercial Code of the State of Texas. The Borrower agrees that any action taken
or omitted by the Issuing Bank under or in connection with any Letter of Credit
or the related drafts or documents, if done in accordance with the standards of
care specified in the ISP or the UCP, as applicable, shall not result in any
liability of the Issuing Bank to the Borrower.

                  (g) Disbursement Procedures. The Issuing Bank shall, promptly
following its receipt thereof, examine all documents purporting to represent a
demand for payment under a Letter

                                      -22-

<PAGE>   27


of Credit. The Issuing Bank shall promptly notify the Administrative Agent and
the Borrower by telephone (confirmed by telecopy) of such demand for payment and
whether the Issuing Bank has made or will make an LC Disbursement thereunder;
provided that any failure to give or delay in giving such notice shall not
relieve the Borrower of its obligation to reimburse the Issuing Bank and the
Lenders with respect to any such LC Disbursement.

                  (h) Interim Interest. If the Issuing Bank shall make any LC
Disbursement, then, unless the Borrower shall reimburse such LC Disbursement in
full on the date such LC Disbursement is made, the unpaid amount thereof shall
bear interest, for each day from and including the date such LC Disbursement is
made to but excluding the date that the Borrower reimburses such LC
Disbursement, at the rate per annum then applicable to ABR Revolving Loans;
provided that, if the Borrower fails to reimburse such LC Disbursement when due
pursuant to paragraph (e) of this Section, then Section 2.11(c) shall apply.
Interest accrued pursuant to this paragraph shall be for the account of the
Issuing Bank, except that interest accrued on and after the date of payment by
any Lender pursuant to paragraph (c) of this Section to reimburse the Issuing
Bank shall be for the account of such Lender to the extent of such payment.

                  (i) Replacement of the Issuing Bank. The Issuing Bank may be
replaced at any time by written agreement among the Borrower, the Administrative
Agent, the replaced Issuing Bank and the successor Issuing Bank. The
Administrative Agent shall notify the Lenders of any such replacement of the
Issuing Bank. At the time any such replacement shall become effective, the
Borrower shall pay all unpaid fees accrued for the account of the replaced
Issuing Bank pursuant to Section 2.10(b). From and after the effective date of
any such replacement, (i) the successor Issuing Bank shall have all the rights
and obligations of the Issuing Bank under this Agreement with respect to Letters
of Credit to be issued thereafter and (ii) references herein to the term
"Issuing Bank" shall be deemed to refer to such successor or to any previous
Issuing Bank, or to such successor and all previous Issuing Banks, as the
context shall require. After the replacement of an Issuing Bank hereunder, the
replaced Issuing Bank shall remain a party hereto and shall continue to have all
the rights and obligations of an Issuing Bank under this Agreement with respect
to Letters of Credit issued by it prior to such replacement, but shall not be
required to issue additional Letters of Credit.

                  (j) Cash Collateralization. If any Event of Default shall
occur and be continuing, on the Business Day that the Borrower receives written
notice from the Administrative Agent or the Required Lenders demanding the
deposit of cash collateral pursuant to this paragraph, the Borrower shall
deposit in an account with the Administrative Agent, in the name of the
Administrative Agent and for the benefit of the Lenders, an amount in cash equal
to the LC Exposure as of such date plus any accrued and unpaid interest thereon;
provided that the obligation to deposit such cash collateral shall become
effective immediately, and such deposit shall become immediately due and
payable, without demand or other notice of any kind, upon the occurrence of any
Event of Default with respect to the Borrower described in clause (h) or (i) of
Section 7.01. Such deposit shall be held by the Administrative Agent as
collateral for the payment and performance of the obligations of the Borrower
under this Agreement. The Administrative Agent shall have exclusive dominion and
control, including the exclusive right of withdrawal, over such account. Other
than any interest

                                      -23-

<PAGE>   28



earned on the investment of such deposits, which investments shall be made at
the option and sole discretion of the Administrative Agent and at the Borrower's
risk and expense, such deposits shall not bear interest. Interest or profits, if
any, on such investments shall accumulate in such account. Moneys in such
account shall be applied by the Administrative Agent to reimburse the Issuing
Bank for LC Disbursements for which it has not been reimbursed and, to the
extent not so applied, shall be held for the satisfaction of the reimbursement
obligations of the Borrower for the LC Exposure at such time or, if the maturity
of the Loans has been accelerated, be applied to satisfy other obligations of
the Borrower under this Agreement. If the Borrower is required to provide an
amount of cash collateral hereunder as a result of the occurrence and
continuance of an Event of Default, (i) such amount (to the extent not applied
as aforesaid) shall be returned to the Borrower within three Business Days after
all Events of Default have been cured or waived or (ii) any amount of such cash
collateral in excess of the unpaid Obligations shall be returned to the Borrower
upon the Borrower's written request.

                  SECTION 2.05. Funding of Borrowings. (a) Each Lender shall
make each Loan to be made by it hereunder on the proposed date thereof by wire
transfer of immediately available funds by 1:30 p.m., Houston, Texas time, to
the account of the Administrative Agent most recently designated by it for such
purpose by notice to the Lenders. The Administrative Agent will make such Loans
available to the Borrower by promptly crediting the amounts so received, in like
funds, to an account of the Borrower maintained with the Administrative Agent in
Houston, Texas or other location as designated by the Borrower in the applicable
Borrowing Request.

                  (b) Unless the Administrative Agent shall have received notice
from a Lender prior to the proposed date of any Borrowing that such Lender will
not make available to the Administrative Agent such Lender's share of such
Borrowing, the Administrative Agent may assume that such Lender has made such
share available on such date in accordance with paragraph (a) of this Section
and may, in reliance upon such assumption, make available to the Borrower a
corresponding amount. In such event, if a Lender has not in fact made its share
of the applicable Borrowing available to the Administrative Agent, then the
applicable Lender and the Borrower severally agree to pay to the Administrative
Agent forthwith on demand such corresponding amount with interest thereon, for
each day from and including the date such amount is made available to the
Borrower to but excluding the date of payment to the Administrative Agent, at
(i) in the case of such Lender, the greater of the Federal Funds Effective Rate
and a rate determined by the Administrative Agent in accordance with banking
industry rules on interbank compensation or (ii) in the case of the Borrower,
the interest rate requested by the Borrower to be applicable to such Borrowing.
If such Lender pays such amount to the Administrative Agent, then such amount
shall constitute such Lender's Loan included in such Borrowing.

                  SECTION 2.06. Interest Elections. (a) Each Revolving Borrowing
initially shall be of the Type specified in the applicable Borrowing Request
and, in the case of a Eurodollar Revolving Borrowing, shall have an initial
Interest Period as specified in such Borrowing Request. Thereafter, the Borrower
may elect to convert such Borrowing to a different Type or to continue such
Borrowing and, in the case of a Eurodollar Revolving Borrowing, may elect
Interest Periods

                                      -24-

<PAGE>   29


therefor, all as provided in this Section. The Borrower may elect different
options with respect to different portions of the affected Borrowing, in which
case each such portion shall be allocated ratably among the Lenders holding the
Loans comprising such Borrowing, and the Loans comprising each such portion
shall be considered a separate Borrowing.

                  (b) To make an election pursuant to this Section, the Borrower
shall notify the Administrative Agent of such election by telephone by the time
that a Borrowing Request would be required under Section 2.03 if the Borrower
were requesting a Revolving Borrowing of the Type resulting from such election
to be made on the effective date of such election. Each such telephonic Interest
Election Request shall be irrevocable and shall be confirmed promptly by hand
delivery or telecopy to the Administrative Agent of a written Interest Election
Request in a form approved by the Administrative Agent and signed by the
Borrower.

                  (c) Each telephonic and written Interest Election Request
shall specify the following information in compliance with Section 2.02:

                  (i)   the Borrowing to which such Interest Election Request
         applies and, if different options are being elected with respect to
         different portions thereof, the portions thereof to be allocated to
         each resulting Borrowing (in which case the information to be specified
         pursuant to clauses (iii) and (iv) below shall be specified for each
         resulting Borrowing);

                  (ii)  the effective date of the election made pursuant to
         such Interest Election Request, which shall be a Business Day;

                  (iii) whether the resulting Borrowing is to be an ABR
         Borrowing or a Eurodollar Borrowing; and

                  (iv)  if the resulting Borrowing is a Eurodollar Borrowing,
         the Interest Period to be applicable thereto after giving effect to
         such election, which shall be a period contemplated by the definition
         of the term "Interest Period".

If any such Interest Election Request requests a Eurodollar Borrowing but does
not specify an Interest Period, then the Borrower shall be deemed to have
selected an Interest Period of one month's duration.

                  (d) Promptly following receipt of an Interest Election
Request, the Administrative Agent shall advise each Lender of the details
thereof and of such Lender's portion of each resulting Borrowing.

                  (e) If the Borrower fails to deliver a timely Interest
Election Request with respect to a Eurodollar Revolving Borrowing prior to the
end of the Interest Period applicable thereto, then, unless such Borrowing is
repaid as provided herein, at the end of such Interest Period such


                                      -25-

<PAGE>   30


Borrowing shall be converted to an ABR Borrowing. Notwithstanding any contrary
provision hereof, if a Default has occurred and is continuing, then, so long as
a Default is continuing (i) no outstanding Revolving Borrowing may be converted
to or continued as a Eurodollar Borrowing and (ii) unless repaid, each
Eurodollar Revolving Borrowing shall be converted to an ABR Borrowing at the end
of the Interest Period applicable thereto.

                  SECTION 2.07. Termination and Reduction of Commitments. (a)
Unless previously terminated, the Commitments shall terminate on the Maturity
Date.

                  (b) The Borrower may at any time terminate, or from time to
time reduce, the Commitments; provided that (i) each reduction of the
Commitments shall be in an amount that is an integral multiple of $1,000,000 and
not less than $5,000,000 and (ii) the Borrower shall not terminate or reduce the
Commitments if, after giving effect to any concurrent prepayment of the Loans in
accordance with Section 2.09, the sum of the LC Exposure plus the aggregate
principal amount of outstanding Loans would exceed the total Commitments.

                  (c) The Borrower shall notify the Administrative Agent of any
election to terminate or reduce the Commitments under paragraph (b) of this
Section at least three Business Days prior to the effective date of such
termination or reduction, specifying such election and the effective date
thereof. Promptly following receipt of any notice, the Administrative Agent
shall advise the Lenders of the contents thereof. Each notice delivered by the
Borrower pursuant to this Section shall be irrevocable; provided that a notice
of termination of the Commitments delivered by the Borrower may state that such
notice is conditioned upon the effectiveness of other credit facilities, in
which case such notice may be revoked by the Borrower (by notice to the
Administrative Agent on or prior to the specified effective date) if such
condition is not satisfied. In the event of any termination, the Administrative
Agent and the Lenders agree to use their best efforts to execute releases or
assignments of Liens, and take other reasonable actions as may be reasonably
requested by the Borrower at the expense of the Borrower. Any termination or
reduction of the Commitments shall be permanent. Each reduction of the
Commitments shall be made ratably among the Lenders in accordance with their
respective Commitments.

                  SECTION 2.08. Repayment of Loans; Evidence of Debt. (a) The
Borrower hereby unconditionally promises to pay to the Administrative Agent for
the account of each Lender the then unpaid principal amount of each Revolving
Loan on the Maturity Date.

                  (b) Each Lender shall maintain in accordance with its usual
practice an account or accounts evidencing the indebtedness of the Borrower to
such Lender resulting from each Loan made by such Lender, including the amounts
of principal and interest payable and paid to such Lender from time to time
hereunder.

                  (c) The Administrative Agent shall maintain accounts in which
it shall record (i) the amount of each Loan made hereunder, the Class and Type
thereof and the Interest Period applicable thereto, (ii) the amount of any
principal or interest due and payable or to become due and


                                      -26-

<PAGE>   31


payable from the Borrower to each Lender hereunder and (iii) the amount of any
sum received by the Administrative Agent hereunder for the account of the
Lenders and each Lender's share thereof.

                  (d) The entries made in the accounts maintained pursuant to
paragraph (b) or (c) of this Section shall be prima facie evidence of the
existence and amounts of the obligations recorded therein; provided that the
failure of any Lender or the Administrative Agent to maintain such accounts or
any error therein shall not in any manner affect the obligation of the Borrower
to repay the Loans in accordance with the terms of this Agreement.

                  (e) The Loans made by each Lender shall be evidenced by a Note
payable to said Lender.

                  SECTION 2.09. Prepayment of Loans. (a) The Borrower shall have
the right at any time and from time to time to prepay any Borrowing in whole or
in part, subject to prior notice in accordance with paragraph (b) of this
Section.

                  (b) The Borrower shall notify the Administrative Agent by
telephone (confirmed by telecopy) of any prepayment hereunder (i) in the case of
prepayment of a Eurodollar Revolving Borrowing, not later than 11:00 a.m.,
Houston, Texas time, three Business Days before the date of prepayment, or (ii)
in the case of prepayment of an ABR Revolving Borrowing, not later than 11:00
a.m., Houston, Texas time, one Business Day before the date of prepayment. Each
such notice shall be irrevocable and shall specify the prepayment date and the
principal amount of each Borrowing or portion thereof to be prepaid; provided
that, if a notice of prepayment is given in connection with a conditional notice
of termination of the Commitments as contemplated by Section 2.07, then such
notice of prepayment may be revoked if such notice of termination is revoked in
accordance with Section 2.07. Promptly following receipt of any such notice
relating to a Revolving Borrowing, the Administrative Agent shall advise the
Lenders of the contents thereof. Each partial prepayment of any Revolving
Borrowing shall be in an amount that would be permitted in the case of an
advance of a Revolving Borrowing of the same Type as provided in Section 2.02.
Each prepayment of a Revolving Borrowing shall be applied ratably to the Loans
included in the prepaid Borrowing. Prepayments shall be accompanied by accrued
interest to the extent required by Section 2.11.

                  SECTION 2.10. Fees. (a) The Borrower agrees to pay to the
Administrative Agent for the account of each Lender a commitment fee, which
shall accrue as shown in the column for Commitment Fee Rate in the definitions
of Applicable Margin on the daily average Commitment of each Lender less the
Revolving Credit Exposure for such Lender during the period from and including
the date of this Agreement to but excluding the date on which such Commitment
terminates. Accrued and unpaid commitment fees shall be payable in arrears on
the last day of March, June, September and December of each year and on the date
on which the Commitments terminate, commencing on the first such date to occur
after the date hereof; provided that any unpaid commitment fees accruing after
the date on which the Commitments terminate shall be payable on demand. All
facility fees shall be computed on the basis of a year of 360 days and shall be
payable for the actual number of days elapsed (including the first day but
excluding the last day).


                                      -27-

<PAGE>   32


                  (b) The Borrower agrees to pay (i) to the Administrative Agent
for the account of each Lender a participation fee with respect to each Letter
of Credit issued hereunder equal to the greater of (A) the then Applicable
Margin as interest on Eurodollar Revolving Loans multiplied by the face amount
of each Letter of Credit or (B) $500, and (ii) to the Issuing Bank a fronting
fee, equal to .25% per annum multiplied times the face amount of such Letter of
Credit, as well as the Issuing Bank's standard fees with respect to the
issuance, amendment, renewal or extension of any Letter of Credit or processing
of drawings thereunder. Participation fees and fronting fees shall be payable in
arrears on the last day of March, June, September and December of each year;
provided that all such fees shall be payable on the date on which the
Commitments terminate and any such fees accruing after the date on which the
Commitments terminate shall be payable on demand. Any other fees payable to the
Issuing Bank pursuant to this paragraph shall be payable within 10 days after
demand. All participation fees and fronting fees shall be computed on the basis
of a year of 360 days and shall be payable for the actual number of days elapsed
(including the first day but excluding the last day).

                  (c) The Borrower agrees to pay to the Administrative Agent,
for its own account, fees payable in the amounts and at the times separately
agreed upon between the Borrower and the Administrative Agent.

                  (d) All fees payable hereunder shall be paid on the dates due,
in immediately available funds, to the Administrative Agent (or to the Issuing
Bank, in the case of letter of credit related fees payable to it) for
distribution, in the case of commitment fees and participation fees, to the
Lenders. Fees paid shall not be refundable under any circumstances.

                  SECTION 2.11. Interest. (a) The Loans comprising each ABR
Borrowing shall bear interest at a rate per annum equal to the lesser of: (i)
the Alternate Base Rate plus the Applicable Margin and (ii) the Highest Lawful
Rate.

                  (b) The Loans comprising each Eurodollar Borrowing shall bear
interest at a rate per annum equal to the lesser of: (i) the Adjusted LIBO Rate
for the Interest Period in effect for such Borrowing plus the Applicable Margin
and (ii) the Highest Lawful Rate.

                  (c) Notwithstanding the foregoing, if any principal of or
interest on any Loan or any fee or other amount payable by the Borrower
hereunder is not paid when due, whether at stated maturity, upon acceleration or
otherwise, such overdue amount shall bear interest, after as well as before
judgment, at a rate per annum equal to the lesser of: (i)(x) in the case of
overdue principal of any Loan, 2% per annum plus the rate otherwise applicable
to such Loan as provided in the preceding paragraphs of this Section or (y) in
the case of any other amount, 2% per annum plus the rate applicable to ABR Loans
as provided in paragraph (a) of this Section (such increased rate per annum in
(x) or (y) being, the "Default Rate") and (ii) the Highest Lawful Rate.

                  (d) Accrued and unpaid interest on each Loan shall be payable
in arrears on each Interest Payment Date for such Loan and, in the case of
Revolving Loans, upon termination of the

                                      -28-

<PAGE>   33



Commitments; provided that (i) in the event of any repayment or prepayment of
any Loan (other than a prepayment of an ABR Revolving Loan prior to the end of
the Availability Period), accrued interest on the principal amount repaid or
prepaid shall be payable on the date of such repayment or prepayment and (ii) in
the event of any conversion of any Eurodollar Revolving Loan prior to the end of
the current Interest Period therefor, accrued and unpaid interest on such Loan
shall be payable on the effective date of such conversion.

                  (e) All interest hereunder shall be computed on the basis of a
year of 360 days, except that interest computed by reference to the Alternate
Base Rate at times when the Alternate Base Rate is based on the Prime Rate shall
be computed on the basis of a year of 365 days (or 366 days in a leap year), and
in each case shall be payable for the actual number of days elapsed (including
the first day but excluding the last day). The applicable Alternate Base Rate,
Adjusted LIBO Rate or LIBO Rate shall be determined by the Administrative Agent,
and such determination shall be prima facie evidence of the correctness thereof.

                  SECTION 2.12. Alternate Rate of Interest. If prior to the
commencement of any Interest Period for a Eurodollar Borrowing:

                  (a) the Administrative Agent reasonably determines (which
determination shall be prima facie evidence of the correctness thereof) that
adequate and reasonable means do not exist for ascertaining the Adjusted LIBO
Rate or the LIBO Rate, as applicable, for such Interest Period; or

                  (b) the Administrative Agent is advised by the Required
Lenders that they have reasonably determined in good faith that the Adjusted
LIBO Rate or the LIBO Rate, as applicable, for such Interest Period will not
adequately and fairly reflect the cost to such Lenders (or Lender) of making or
maintaining their Loans (or its Loan) included in such Borrowing for such
Interest Period; or

                  (c) any Lender advises the Administrative Agent of any Change
in Law or that the interpretation thereof by any Governmental Authority shall
make it unlawful for such Lender to make or maintain any Eurodollar Borrowing or
Eurodollar Loan or to give effect to its obligations as contemplated hereby.

then the Administrative Agent shall give notice thereof to the Borrower and the
Lenders by telephone or telecopy as promptly as practicable thereafter and,
until the Administrative Agent notifies the Borrower and the Lenders that the
circumstances giving rise to such notice no longer exist (which notice the
Administrative Agent agrees to give promptly after a reasonable basis therefor
exists), (i) any Interest Election Request that requests the conversion of any
Revolving Borrowing to, or continuation of any Revolving Borrowing as, a
Eurodollar Borrowing shall be ineffective; (ii) if any Borrowing Request
requests a Eurodollar Revolving Borrowing, such Borrowing shall be made as an
ABR Borrowing and (iii) with respect to clause (c) above, require that all
outstanding Eurodollar Loans made by such Lender be converted to ABR Loans, in
which


                                      -29-

<PAGE>   34


event all such Eurodollar Loans of such Lender shall be automatically converted
to ABR Loans as of the effective date of such notice.

                  SECTION 2.13. Increased Costs. (a) If any Change in Law shall:

                  (i)   impose, modify or deem applicable any reserve, special
         deposit or similar requirement against assets of, deposits with or for
         the account of, or credit extended by, any Lender (except any such
         reserve requirement reflected in the Adjusted LIBO Rate) or the Issuing
         Bank; or

                  (ii)  impose on any Lender or the Issuing Bank or the London
         interbank market any other condition affecting this Agreement or
         Eurodollar Loans made by such Lender or any Letter of Credit or
         participation therein;

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Eurodollar Loan (or of maintaining its
obligation to make any such Loan) or to increase the cost to such Lender or the
Issuing Bank of participating in, issuing or maintaining any Letter of Credit or
to reduce the amount of any sum received or receivable by such Lender or the
Issuing Bank hereunder (whether of principal, interest or otherwise), then the
Borrower will pay to such Lender or the Issuing Bank, as the case may be, such
additional amount or amounts as, in the reasonable judgment of the affected
Lender, will compensate such Lender or the Issuing Bank, as the case may be, for
such additional costs incurred or reduction suffered.

                  (b) If any Lender or the Issuing Bank determines that any
Change in Law regarding capital requirements has or would have the effect of
reducing the rate of return on such Lender's or the Issuing Bank's capital or on
the capital of such Lender's or the Issuing Bank's holding company, if any, as a
consequence of this Agreement or the Loans made by, or participations in Letters
of Credit held by, such Lender, or the Letters of Credit issued by the Issuing
Bank, to a level below that which such Lender or the Issuing Bank or such
Lender's or the Issuing Bank's holding company could have achieved but for such
Change in Law (taking into consideration such Lender's or the Issuing Bank's
policies and the policies of such Lender's or the Issuing Bank's holding company
with respect to capital adequacy), then from time to time the Borrower will pay
to such Lender or the Issuing Bank, as the case may be, such additional amount
or amounts reasonably determined by such Lender as will compensate such Lender
or the Issuing Bank or such Lender's or the Issuing Bank's holding company for
any such reduction suffered.

                  (c) A certificate of a Lender or the Issuing Bank setting
forth the amount or amounts necessary to compensate such Lender or the Issuing
Bank or its holding company, as the case may be, as specified in paragraph (a)
or (b) of this Section shall be delivered to the Borrower and shall be prima
facie evidence of the correctness thereof. The Borrower shall pay such Lender or
the Issuing Bank, as the case may be, the amount shown as due on any such
certificate within fifteen (15) days after receipt thereof.


                                      -30-

<PAGE>   35


                  (d) Failure or delay on the part of any Lender or the Issuing
Bank to demand compensation pursuant to this Section shall not constitute a
waiver of such Lender's or the Issuing Bank's right to demand such compensation;
provided that the Borrower shall not be required to compensate a Lender or the
Issuing Bank pursuant to this Section for any increased costs or reductions
incurred more than 180 days prior to the date that such Lender or the Issuing
Bank, as the case may be, notifies the Borrower of the Change in Law giving rise
to such increased costs or reductions and of such Lender's or the Issuing Bank's
intention to claim compensation therefor; provided further that, if the Change
in Law giving rise to such increased costs or reductions is retroactive, then
the 180-day period referred to above shall be extended to include the period of
retroactive effect thereof.

                  SECTION 2.14. Break Funding Payments. In the event of (a) the
payment of any principal of any Eurodollar Loan other than on the last day of an
Interest Period applicable thereto (including as a result of an Event of
Default), (b) the conversion of any Eurodollar Loan other than on the last day
of the Interest Period applicable thereto, (c) the failure to borrow, convert,
continue or prepay any Revolving Loan on the date specified in any notice
delivered pursuant hereto (regardless of whether such notice may be revoked
under Section 2.09(b) and is revoked in accordance therewith), or (d) the
assignment of any Eurodollar Loan other than on the last day of the Interest
Period applicable thereto as a result of a request by the Borrower pursuant to
Section 2.17, then, in any such event, the Borrower shall compensate each Lender
for the loss, cost and expense attributable to such event. In the case of a
Eurodollar Loan, such loss, cost or expense to any Lender shall be deemed to
include an amount reasonably determined by such Lender to be the excess, if any,
of (i) the amount of interest which would have accrued on the principal amount
of such Loan had such event not occurred, at the Adjusted LIBO Rate that would
have been applicable to such Loan, for the period from the date of such event to
the last day of the then current Interest Period therefor (or, in the case of a
failure to borrow, convert or continue, for the period that would have been the
Interest Period for such Loan), over (ii) the amount of interest which would
accrue on such principal amount for such period at the interest rate which such
Lender would bid were it to bid, at the commencement of such period, for dollar
deposits of a comparable amount and period from other banks in the eurodollar
market. A certificate of any Lender setting forth any amount or amounts that
such Lender is entitled to receive pursuant to this Section shall be delivered
to the Borrower and shall be prima facie evidence of the correctness thereof.
The Borrower shall pay such Lender the amount shown as due on any such
certificate within ten (10) days after receipt thereof.

                  SECTION 2.15. Taxes. (a) Any and all payments by or on account
of any obligation of the Borrower hereunder shall be made free and clear of and
without deduction for any Indemnified Taxes or Other Taxes; provided that if the
Borrower shall be required to deduct any Indemnified Taxes or Other Taxes from
such payments, then (i) the sum payable shall be increased as necessary so that
after making all required deductions (including deductions applicable to
additional sums payable under this Section) the Administrative Agent, Lender or
Issuing Bank (as the case may be) receives an amount equal to the sum it would
have received had no such deductions been made,

                                      -31-

<PAGE>   36



(ii) the Borrower shall make such deductions and (iii) the Borrower shall pay
the full amount deducted to the relevant Governmental Authority in accordance
with applicable law.

                  (b) In addition, the Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

                  (c) The Borrower shall indemnify the Administrative Agent,
each Lender and the Issuing Bank, within fifteen (15) days after written demand
therefor, for the full amount of any Indemnified Taxes or Other Taxes paid by
the Administrative Agent, such Lender or the Issuing Bank, as the case may be,
on or with respect to any payment by or on account of any obligation of the
Borrower hereunder (including Indemnified Taxes or Other Taxes imposed or
asserted on or attributable to amounts payable under this Section) and any
penalties, interest and reasonable expenses arising therefrom or with respect
thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or
legally imposed or asserted by the relevant Governmental Authority. A
certificate as to the amount of such payment or liability delivered to the
Borrower by a Lender or the Issuing Bank, or by the Administrative Agent on its
own behalf or on behalf of a Lender or the Issuing Bank, prima facie evidence of
the correctness thereof.

                  (d) As soon as practicable after any payment of Indemnified
Taxes or Other Taxes by the Borrower to a Governmental Authority, the Borrower
shall deliver to the Administrative Agent the original or a certified copy of a
receipt issued by such Governmental Authority evidencing such payment, a copy of
the return reporting such payment or other evidence of such payment reasonably
satisfactory to the Administrative Agent.

                  (e) Any Foreign Lender that is entitled to an exemption from
or reduction of withholding tax under the law of the jurisdiction in which the
Borrower is located, or any treaty to which such jurisdiction is a party, with
respect to payments under this Agreement shall deliver to the Borrower (with a
copy to the Administrative Agent), at the time or times prescribed by applicable
law, such properly completed and executed documentation prescribed by applicable
law or reasonably requested by the Borrower as will permit such payments to be
made without withholding or at a reduced rate.

                  SECTION 2.16. Payments Generally; Pro Rata Treatment; Sharing
of Set-offs. (a) The Borrower shall make each payment required to be made by it
hereunder (whether of principal, interest, fees or reimbursement of LC
Disbursements, or of amounts payable under Section 2.13, 2.14 or 2.15, or
otherwise) prior to 12:00 noon, Houston, Texas time, on the date when due, in
immediately available funds, without set-off or counterclaim. Any amounts
received after such time on any date may, in the discretion of the
Administrative Agent, be deemed to have been received on the next succeeding
Business Day for purposes of calculating interest thereon. All such payments
shall be made to the Administrative Agent at its offices at 712 Main St.,
Houston, Texas 77002 and except that payments pursuant to Sections 2.13, 2.14,
2.15 and 9.03 shall be made directly to the Persons entitled thereto. The
Administrative Agent shall distribute any such payments received by it for the
account of any other Person to the appropriate recipient promptly following
receipt thereof.

                                      -32-

<PAGE>   37


If any payment hereunder shall be due on a day that is not a Business Day, the
date for payment shall be extended to the next succeeding Business Day, and, in
the case of any payment accruing interest, interest thereon shall be payable for
the period of such extension. All payments hereunder shall be made in dollars.

                  (b) If at any time insufficient funds are received by and
available to the Administrative Agent to pay fully all amounts of principal,
unreimbursed LC Disbursements, interest and fees then due hereunder, such funds
shall be applied (i) first, towards payment of interest and fees then due
hereunder, ratably among the parties entitled thereto in accordance with the
amounts of interest and fees then due to such parties, and (ii) second, towards
payment of principal and unreimbursed LC Disbursements then due hereunder,
ratably among the parties entitled thereto in accordance with the amounts of
principal and unreimbursed LC Disbursements then due to such parties.

                  (c) If any Lender shall, by exercising any right of set-off or
counterclaim or otherwise, obtain payment in respect of any principal of or
interest on any of its Revolving Loans or participations in LC Disbursements
resulting in such Lender receiving payment of a greater proportion of the
aggregate amount of its Revolving Loans and participations in LC Disbursements
and accrued interest thereon than the proportion received by any other Lender,
then the Lender receiving such greater proportion shall purchase (for cash at
face value) participations in the Revolving Loans and participations in LC
Disbursements of other Lenders to the extent necessary so that the benefit of
all such payments shall be shared by the Lenders ratably in accordance with the
aggregate amount of principal of and accrued interest on their respective
Revolving Loans and participations in LC Disbursements; provided that (i) if any
such participations are purchased and all or any portion of the payment giving
rise thereto is recovered, such participations shall be rescinded and the
purchase price restored to the extent of such recovery, without interest, and
(ii) the provisions of this paragraph shall not be construed to apply to any
payment made by the Borrower pursuant to and in accordance with the express
terms of this Agreement or any payment obtained by a Lender as consideration for
the assignment of or sale of a participation in any of its Loans or
participations in LC Disbursements to any assignee or participant, other than to
the Borrower or any Subsidiary or Affiliate thereof (as to which the provisions
of this paragraph shall apply). The Borrower consents to the foregoing and
agrees, to the extent it may effectively do so under applicable law, that any
Lender acquiring a participation pursuant to the foregoing arrangements may
exercise, after the occurrence and during the continuance of an Event of
Default, against the Borrower rights of set-off and counterclaim with respect to
such participation as fully as if such Lender were a direct creditor of the
Borrower in the amount of such participation.

                  (d) Unless the Administrative Agent shall have received notice
from the Borrower prior to the date on which any payment is due to the
Administrative Agent for the account of the Lenders or the Issuing Bank
hereunder that the Borrower will not make such payment, the Administrative Agent
may assume that the Borrower has made such payment on such date in accordance
herewith and may, in reliance upon such assumption, distribute to the Lenders or
the Issuing Bank, as the case may be, the amount due. In such event, if the
Borrower has not in fact


                                      -33-

<PAGE>   38


made such payment, then each of the Lenders or the Issuing Bank, as the case may
be, severally agrees to repay to the Administrative Agent forthwith on demand
the amount so distributed to such Lender or Issuing Bank with interest thereon,
for each day from and including the date such amount is distributed to it to but
excluding the date of payment to the Administrative Agent, at the greater of the
Federal Funds Effective Rate and a rate determined by the Administrative Agent
in accordance with banking industry rules on interbank compensation.

                  (e) If any Lender shall fail to make any payment required to
be made by it pursuant to Section 2.04(d) or (e), 2.05(b) or 2.16(d), then the
Administrative Agent may, in its discretion (notwithstanding any contrary
provision hereof), apply any amounts thereafter received by the Administrative
Agent for the account of such Lender to satisfy such Lender's obligations under
such Sections until all such unsatisfied obligations are fully paid.

                  SECTION 2.17. Mitigation Obligations; Replacement of Lenders.
(a) If any Lender requests compensation under Section 2.13, or if the Borrower
is required to pay any additional amount to any Lender or any Governmental
Authority for the account of any Lender pursuant to Section 2.15, then such
Lender shall, following a request by Borrower, use reasonable efforts to
designate a different lending office for funding or booking its Loans hereunder
or to assign its rights and obligations hereunder to another of its offices,
branches or affiliates, if, in the judgment of such Lender, such designation or
assignment (i) would eliminate or reduce amounts payable pursuant to Section
2.13 or 2.15, as the case may be, in the future and (ii) would not subject such
Lender to any unreimbursed cost or expense and would not otherwise be
disadvantageous to such Lender. The Borrower hereby agrees to pay all reasonable
costs and expenses incurred by any Lender in connection with any such
designation or assignment.

                  (b) If any Lender requests compensation under Section 2.13, or
if the Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.15,
or if any Lender defaults in its obligation to fund Loans hereunder, then the
Borrower may, at its sole expense and effort, upon notice to such Lender and the
Administrative Agent, require such Lender to assign and delegate, without
recourse (in accordance with and subject to the restrictions contained in
Section 9.04), all its interests, rights and obligations under this Agreement to
an assignee that shall assume such obligations (which assignee may be another
Lender, if a Lender accepts such assignment); provided that (i) the Borrower
shall have received the prior written consent of the Administrative Agent (and,
if a Commitment is being assigned, the Issuing Bank), which consent shall not
unreasonably be withheld, (ii) such Lender shall have received payment of an
amount equal to the outstanding principal of its Loans and participations in LC
Disbursements, accrued interest thereon, accrued fees and all other amounts
payable to it hereunder, from the assignee (to the extent of such outstanding
principal and accrued interest and fees) or the Borrower (in the case of all
other amounts) and (iii) in the case of any such assignment resulting from a
claim for compensation under Section 2.13 or payments required to be made
pursuant to Section 2.15, such assignment will result in a reduction in such
compensation or payments. A Lender shall not be required to make any such
assignment and delegation if, prior


                                      -34-

<PAGE>   39


thereto, as a result of a waiver by such Lender or otherwise, the circumstances
entitling the Borrower to require such assignment and delegation cease to apply.

                  SECTION 2.18. Effect of Increased Costs. The provisions of
Sections 2.04, 2.13, 2.14, 2.15, 2.16 and 2.17 shall be interpreted in the
broadest possible terms to include any increased costs, payments or reduced
income for any reason, including but specifically not by way of limitation, due
to taxes, capital adequacy provisions, reserve requirements, withholding
obligations, costs due to the payment of any sums on a date other than the
regularly scheduled date or for any other reason. The Borrower does hereby
indemnify and hold harmless the Administrative Agent and each Lender for all
such costs and does hereby agree to pay same or cover the Administrative Agent's
or any Lender's expenses or losses in regard to same. The Borrower shall pay
such sums to the Administrative Agent or to any Lender as are necessary to
mitigate all such items. This obligation is in addition to all other Obligations
of the Borrower hereunder.

                                   ARTICLE III

                         Representations and Warranties

                  The Borrower for itself and each of its Subsidiaries, and each
Subsidiary as to itself, represents and warrants to the Lenders that:

                  SECTION 3.01. Organization; Powers. Each of the Borrower and
its Subsidiaries is duly organized, validly existing and in good standing under
the laws of the jurisdiction of its organization, has all requisite power and
authority to carry on its business as now conducted and is qualified to do
business in, and is in good standing in, every jurisdiction where such
qualification is required except, in each case, where the failure to do so,
individually or in the aggregate, could not reasonably be expected to result in
a Material Adverse Effect.

                  SECTION 3.02. Authorization; Enforceability. Each of the
Borrower and its Subsidiaries has the corporate power and authority to execute,
deliver and perform its obligations hereunder and under the Loan Documents to
which it is a party and all such action has been duly authorized by all
necessary corporate and, if required, stockholder action. The Loan Documents to
which each such Person is a party have been duly executed and delivered by such
Person and constitute a legal, valid and binding obligation of such Person,
enforceable in accordance with the respective terms thereof, subject to
applicable bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium or other laws affecting creditors' rights generally and subject to
general principles of equity, regardless of whether considered in a proceeding
in equity or at law.

                  SECTION 3.03. Governmental Approvals; No Conflicts. The
Transactions (a) do not require any consent or approval of, registration or
filing with, or any other action by, any Governmental Authority, except such as
have been obtained or made and are in full force and effect, (b) will not
violate any applicable law or regulation including, without limitations, ERISA
or the

                                      -35-

<PAGE>   40



charter, by-laws or other organizational documents of the Borrower or any of its
Subsidiaries or any order of any Governmental Authority, (c) will not violate or
result in a default under any indenture, agreement or other instrument binding
upon the Borrower or any of its Subsidiaries or its assets, except under
agreements evidencing certain Indebtedness owing by Walker's Concrete, Inc. to
Union Bank of California or give rise to a right thereunder to require any
payment to be made by the Borrower or any of its Subsidiaries, and (d) will not
result in the creation or imposition of any Lien on any asset of the Borrower or
any of its Subsidiaries other than Permitted Encumbrances and Liens granted
pursuant to the Loan Documents.

                  SECTION 3.04. Financial Condition; No Material Adverse Change.
(a) The Borrower has heretofore furnished to the Lenders (i) the audited balance
sheets and statements of operations, stockholder's equity and cash flows of each
of the Founding Companies (except for Santa Rosa) as of and for the fiscal year
ended December 31, 1998, reported on by Arthur Andersen LLP, (ii) the Borrower's
unaudited pro forma combined statement of operations for the fiscal year ended
December 31, 1998 and (iii) the Borrower's unaudited pro forma combined balance
sheets and statement of operations as of and for the period ending March 31,
1999. Such audited financial statements present fairly, in all material
respects, the financial position and results of operations and cash flows of the
applicable Founding Company and its consolidated subsidiaries as of such dates
and for such periods in accordance with GAAP. Such pro forma financial
statements fairly present the financial position and results of operations and
cash flows of the Borrower and its consolidated Subsidiaries as of such dates
and for such period in accordance with GAAP, subject to the assumptions and
qualifications set forth in the Registration Statement.

                  (b) Since March 31, 1999, there has been no material adverse
change in the business, assets, operations or condition, financial or otherwise,
of the Borrower and its Subsidiaries, taken as a whole.

                  SECTION 3.05. Properties. (a) Each of the Borrower and its
Subsidiaries has good title to, or valid leasehold interests in, all its real
and personal property material to its business, subject to no Liens except those
in favor of the Administrative Agent and other Permitted Liens, and except for
minor defects in title that do not interfere with its ability to conduct its
business as currently conducted or to utilize such properties for their intended
purposes.

                  (b) Schedule 3.05(b) describes all of the Leases in effect as
of the Effective Date (copies of each of which have been provided to the
Administrative Agent), each of which (i) has been duly executed and delivered by
and constitutes the legal, valid and binding obligation of, the Borrower or the
Subsidiary, as the case may be, party thereto in accordance with its terms,
except for creditors' rights and equitable principles, (ii) to the knowledge of
the Borrower and the Subsidiary that is a party thereto, is in full force and
effect and there is no default thereunder and (iii) has not been amended or
modified, nor any provisions thereof waived, except for matters affecting the
enforceability, effectiveness, breaches or amendments and modifications which in
the aggregate are not reasonably likely to result in a Material Adverse Effect.


                                      -36-

<PAGE>   41

                  (c) Each of the Borrower and its Subsidiaries owns, or is
licensed to use, all trademarks, trade names, copyrights, patents and other
intellectual property material to its business, and the use thereof by the
Borrower and its Subsidiaries does not infringe upon the rights of any other
Person, except for any such infringements that, individually or in the
aggregate, could not reasonably be expected to result in a Material Adverse
Effect.

                  (d) The place of business or chief executive office of each of
the Borrower and each Subsidiary is at the location shown on Schedule 3.05(d) or
at such other locations as disclosed to the Administrative Agent in writing
after the date hereof. The federal employee identification number for each of
the Borrower and its Subsidiaries is set forth on Schedule 3.05(d).

                  SECTION 3.06. Litigation and Environmental Matters. (a) There
are no actions, suits, arbitrations or proceedings by or before any arbitrator
or Governmental Authority pending against or, to the knowledge of the Borrower
or any Subsidiary, threatened against or affecting the Borrower or any of its
Subsidiaries (i) as to which there is a reasonable possibility of an adverse
determination and that could reasonably be expected, individually or in the
aggregate, to result in a Material Adverse Effect (other than the Disclosed
Matters) or (ii) that involve this Agreement or the Transactions.

                  (b) Except for the Disclosed Matters and except with respect
to any other matters that, individually or in the aggregate, could not
reasonably be expected to result in a Material Adverse Effect, neither the
Borrower nor any of its Subsidiaries (i) has failed to comply with any
Environmental Law or to obtain, maintain or comply with any permit, license or
other approval required under any Environmental Law, (ii) has become subject to
any Environmental Liability, (iii) has received notice of any claim with respect
to any Environmental Liability or (iv) knows of any reasonable basis for any
Environmental Liability.

                  (c) Since the date of this Agreement, there has been no change
in the status of the Disclosed Matters that, individually or in the aggregate,
has resulted in a Material Adverse Effect.

                  SECTION 3.07. Compliance with Laws and Agreements. Each of the
Borrower and its Subsidiaries is in compliance with all laws, regulations and
orders of any Governmental Authority applicable to it or its property and all
indentures, agreements and other instruments binding upon it or its property, in
each case, except where the failure to do so, individually or in the aggregate,
could not reasonably be expected to result in a Material Adverse Effect. No
default has occurred and is continuing hereunder or under any such other
document.

                  SECTION 3.08. Investment and Holding Company Status. Neither
the Borrower nor any of its Subsidiaries is (a) an "investment company" as
defined in, or subject to regulation under, the Investment Company Act of 1940
or (b) a "holding company" as defined in, or subject to regulation under, the
Public Utility Holding Company Act of 1935.



                                      -37-

<PAGE>   42



                  SECTION 3.09. Taxes. Each of the Borrower and its Subsidiaries
has timely filed or caused to be filed all Tax returns and reports required to
have been filed and has paid or caused to be paid all Taxes required to have
been paid by it, except (a) Taxes that are being contested in good faith by
appropriate proceedings and for which the Borrower or such Subsidiary, as
applicable, has set aside on its books adequate reserves or (b) to the extent
that the failure to do so could not reasonably be expected to result in a
Material Adverse Effect.

                  SECTION 3.10. ERISA. No ERISA Event has occurred or is
reasonably expected to occur that, when taken together with all other such ERISA
Events for which liability is reasonably expected to occur, could reasonably be
expected to result in a Material Adverse Effect.

                  SECTION 3.11. Disclosure. Each of the Borrower and its
Subsidiaries has disclosed to the Lenders all material agreements, instruments
and corporate or other restrictions to which it or any of its Subsidiaries is
subject, and all other matters known to it, that, individually or in the
aggregate, could reasonably be expected to result in a Material Adverse Effect.
Neither the Information Memorandum nor any of the other written reports,
financial statements, certificates or other information furnished by or on
behalf of the Borrower to the Administrative Agent or any Lender in connection
with the negotiation of this Agreement or delivered hereunder (as modified or
supplemented by other information so furnished) contains any material
misstatement of fact or omits to state any material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading; provided that, with respect to projected financial
information, the Borrower represents only that such information was prepared in
good faith based upon assumptions believed to be reasonable at the time and the
Administrative Agent and the Lenders acknowledge that such projections are not
facts and that actual results will differ.

                  SECTION 3.12. Year 2000. Any reprogramming required to permit
the proper functioning, in and following the year 2000, of (i) the Borrower's
computer systems and (ii) equipment containing embedded microchips (including
systems and equipment supplied by others or with which Borrower's systems
interface) and the testing of all such systems and equipment, as so
reprogrammed, will be completed by September 30, 1999. The cost to the Borrower
of such reprogramming and testing and of the reasonably foreseeable consequences
of year 2000 to the Borrower (including, without limitation, reprogramming
errors and the failure of others' systems or equipment) is not reasonably
expected to result in a Default or a Material Adverse Effect. Except for such of
the reprogramming referred to in the preceding sentence as may be necessary, the
computer and management information systems of the Borrower and its Subsidiaries
are and, with ordinary course upgrading and maintenance, will continue for the
term of this Agreement to be, sufficient to permit the Borrower to conduct its
business without Material Adverse Effect.

                  SECTION 3.13 Solvency. After giving effect to the Loans and
the terms of this Agreement, the Borrower and each of its Subsidiaries, taken as
a whole, have assets that exceed their liabilities, are able to pay their debts
as they accrue and has reasonable capital to carry on their business.



                                      -38-

<PAGE>   43


                  SECTION 3.14 Insurance. Each of the Borrower and its
Subsidiaries maintains insurance of such types as is usually carried by
corporations of established reputation engaged in the same or similar businesses
and similarly situated with financially sound, responsible and reputable
insurance companies or associations (or, as to workers' compensation or similar
insurance, with an insurance fund or by self-insurance authorized by the
jurisdiction in which its operations are carried on) and in such amounts (and
with co-insurance and deductibles) as such insurance is usually carried by
corporations of established reputation and engaged in the same or similar
businesses and similarly situated, or self insurance programs, but in any event,
with respect to improvements to real property and tangible personal property
insuring the full replacement cost of such improvement and such tangible
personal property, subject to standard and customary deductibles.

                  SECTION 3.15. Registration Statement. The Registration
Statement contains no material misstatement of fact or omitted any material fact
or any fact necessary to make the statement contained therein not materially
misleading in the light of the circumstances in which made and with respect to
the Borrower and the Founding Companies taken as a whole.

                  SECTION 3.16. Subsidiaries. Schedule 3.16 contains an accurate
list of all of the Subsidiaries of the Borrower as of the Effective Date setting
forth their respective jurisdictions of organization and the percentage of their
respective capital stock owned by the Borrower or any Subsidiary. All of the
issued and outstanding shares of capital stock of such Subsidiaries have been
duly authorized and issued and are fully paid and non-assessable.

                                   ARTICLE IV

                                   Conditions

                  SECTION 4.01. Effective Date. The obligations of the Lenders
to make Loans and of the Issuing Bank to issue Letters of Credit hereunder shall
not become effective until the date on which the Administrative Agent shall have
received the following (or such shall have been waived in accordance with
Section 9.02), each in form and substance reasonably satisfactory to the
Administrative Agent unless otherwise required:

                  (a) this Agreement executed by the Borrower;

                  (b) one Note for each Lender, each executed by the Borrower
and payable to the order of said Lender in the amount of its Commitment;

                  (c) the following Security Documents executed by the parties
thereto granting to the Administrative Agent and the Lenders a first and prior
Lien on the collateral described therein (subject only to Permitted Liens) as
security for the Obligations;

                           (i) the Pledge Agreements;



                                      -39-

<PAGE>   44


                           (ii)  the Security Agreement;

                           (iii) a Guaranty from each Founding Company included
         in Article X hereof;

                           (iv)  The following mortgages, deeds of trust,
         assignments and related documents in regard to the real property owned
         by the following Subsidiaries in the jurisdictions listed:

                  (A)      Baer Concrete, Incorporated:

                           (1)   leasehold interest in Roseland, Essex County,
                                 New Jersey; and

                           (2)   leasehold interest in Bernardsville, Somerset
                                 County, New Jersey.

                  (B)      Bay Cities Building Materials Co., Inc.:

                           (1)   fee interest (150 South Linden Ave., So. San
                                 Francisco) San Francisco County, California;

                           (2)   fee interest (1305 San Mateo Ave., So. San
                                 Francisco) San Francisco County, California;

                           (3)   fee interest (11911 Brentwood, Byron) Contra
                                 Costa County, California;

                           (4)   fee interest (830 W. Elkhorn, Rio Linda)
                                 Sacramento County, California;

                           (5)   fee interest (3527 Durock Road, Cameron
                                 Park) El Dorado County, California;

                           (6)   fee interest (7228 Survey Road, Elk Grove)
                                 Sacramento County, California; and

                           (7)   leasehold interest (201 South Linden, So.
                                 San Francisco) San Francisco County,
                                 California.

                  (C)      Central Concrete Supply Co., Inc.:

                           (1)    fee interest (790, 858, 866, 870 and 889
                                  Stockton Ave. and 661 and 681 University
                                  Ave., San Jose) Santa Clara County,
                                  California; and


                                      -40-

<PAGE>   45


                           (2)   leasehold interests (610 McKendrie St. and
                                 755 Stockton Ave., San Jose) Santa Clara
                                 County, California.

                  (D)      Walker's Concrete, Inc.:

                           (1)   fee interest (1844 West Winton, Hayward)
                                 Alameda County, California; and

                           (2)   fee interest (457 Queens Lane, San Jose)
                                 Santa Clara County, California.

                           (v)   Landlord's Consent, Acknowledgment and Estoppel
         Certificates executed on behalf of any landlord under any leasehold
         estate covered by any deed of trust/mortgage delivered under clause
         (iv) above if requested by the Administrative Agent; and

                           (vi)  UCC-1 Financing Statements as reasonably
                  requested by the Administrative Agent;

                  (d) a Borrowing Request with respect to the initial Borrowing
meeting the requirements of Section 2.03;

                  (e) a certificate of an officer and of the secretary or an
assistant secretary of the Borrower and each Subsidiary certifying, inter alia,
(i) true and complete copies of each of the articles or certificate of
incorporation, as amended and in effect, of such Person, the bylaws, as amended
and in effect, of such Person and the resolutions adopted by the Board of
Directors of such Person (A) authorizing the execution, delivery and performance
by such Person of the Loan Documents to which it is or will be a party and, as
to the Borrower, the Loans to be made hereunder, (B) approving the forms of the
Loan Documents to which it is or will be a party and which will be delivered at
or prior to the date of the initial Borrowing and (C) authorizing officers of
such Person to execute and deliver the Loan Documents to which it is or will be
a party and any related documents, including, any agreement contemplated by this
Agreement and (ii) the incumbency and specimen signatures of the officers of
such Person executing any documents on its behalf;

                  (f) a signed enforceability opinion addressed to the
Administrative Agent and the Lenders from Baker & Botts, L.L.P., counsel to the
Borrower and its Subsidiaries, in form and substance satisfactory to the
Administrative Agent and the Lenders and their counsel;

                  (g) evidence that the Borrower has completed an initial public
offering pursuant to the Registration Statement and has received gross cash
proceeds of not less than $23,000,000 from the initial public offering of common
stock of the Borrower;




                                      -41-

<PAGE>   46


                  (h) evidence of completion of the Borrower's Acquisition of
each of the Founding Companies as contemplated by the Registration Statement
prior to the initial Loan, including certified copies of the Acquisition
Documents for each of the Founding Companies, the terms and conditions of which
shall be in full force and effect and shall not have been amended, modified or
waived in any material respect except with the Administrative Agent's express
prior written consent;

                  (i) a certificate of a Financial Officer of the Borrower
certifying that immediately following Acquisition of the Founding Companies,
Funded Debt of the Borrower and its Subsidiaries does not exceed $22,200,000,
net of cash required to be maintained by any Founding Company pursuant to its
Acquisition Documents but including Indebtedness permitted under Section
6.01(e);

                  (j) evidence that employment agreements have been entered into
with certain key employees of the Borrower and with the senior management of the
Founding Companies as contemplated by the Registration Statement;

                  (k) reliance letters addressed to the Administrative Agent and
the Lenders in respect of each opinion of counsel delivered in connection with
the Acquisition Documents signed in connection with the Acquisition of the
Founding Companies;

                  (l) a copy, certified by a Financial Officer of the Borrower,
of the (i) the audited balance sheets and statements of operations,
stockholders' equity and cash flows of each of the Founding Companies (except
for Santa Rosa) as of and for the fiscal year ended December 31, 1998, reported
on by Arthur Andersen LLP, (ii) the Borrower's unaudited pro forma combined
statement of operations for the fiscal year ended December 31, 1998 and (iii)
the Borrower's unaudited pro forma combined balance sheet and statement of
operations as of and for the period ending March 31, 1999;

                  (m) a summary review by the Administrative Agent of the audit
work performed by Arthur Anderson LLP on behalf of the Borrower and each
Founding Company reasonably satisfactory to the Required Lenders;

                  (n) the payment to the Administrative Agent and the Lenders,
as applicable, of all fees and expenses (other than the fees and disbursements
of Andrews & Kurth L.L.P. pursuant to Section 9.03 which will be paid within 30
days of the Closing) which payments may be made with proceeds of the initial
Advance;

                  (o) certificates of appropriate public officials as to the
existence, good standing and qualification to do business as a foreign
corporation, as applicable, of the Borrower and each Subsidiary each
jurisdiction in which the ownership of its properties or the conduct of its
business requires such qualifications and where the failure to so qualify would
have a Material Adverse Effect;


                                      -42-

<PAGE>   47


                  (p) environmental site assessments reasonably satisfactory to
the Administrative Agent on all real property owned or leased by the Borrower
and the Founding Companies;

                  (q) a preliminary title report issued by Chicago Title
Insurance Company in favor of the Administrative Agent for the benefit of the
Lenders for each of the properties such to a deed of trust/mortgage to be
delivered pursuant to Section 4.01(c)(iii);

                  (r) certificates of insurance showing the Administrative Agent
as loss payee or additional insured, as appropriate, and a schedule of existing
insurance, in each case reasonably satisfactory to the Administrative Agent
evidencing the existence of all insurance required to be maintained pursuant to
Section 5.05;

                  (s) determination that no material part of the property
covered by the mortgages to be delivered pursuant to Section 4.01(c)(iii) lies
in a Special Flood Hazard Area or other hazard or flood plain area however
designated, as determined in accordance with the criteria established by the
Federal Insurance Administration or any other governmental authority having
jurisdiction over the subject property;

                  (t) if prepared, a copy of any management letter and report by
Arthur Andersen LLP prepared in connection with its due diligence and asset
valuation of the Borrower and the Founding Companies;

                  (u) lien searches on the Borrower and its Subsidiaries in the
jurisdictions requested by the Administrative Agent, together with waivers from
the holders of any Liens (other than Permitted Liens) as reasonably requested by
the Administrative Agent; and

                  (v) such other consents, approvals, opinions or documents as
the Administrative Agent or the Lenders may reasonably request.

The Administrative Agent shall notify the Borrower and the Lenders of the
Effective Date, and such notice shall be conclusive and binding. Notwithstanding
the foregoing, the obligations of the Lenders to make Loans and of the Issuing
Bank to issue Letters of Credit hereunder shall not become effective unless each
of the foregoing conditions is satisfied (or waived pursuant to Section 9.02) or
prior to 2:00 p.m., Houston, Texas time, on May 28, 1999 (and, in the event such
conditions are not so satisfied or waived, the Commitments shall terminate at
such time).

                  SECTION 4.02. Each Credit Event. The effectiveness of this
Agreement and the obligation of each Lender to make a Loan on the occasion of
any Borrowing which increases the aggregate principal amount of the Obligations,
and of the Issuing Bank to issue, amend, renew or extend any Letter of Credit,
is subject to the satisfaction of the following conditions:

                  (a) The representations and warranties of the Borrower set
forth in this Agreement shall be true and correct on and as of the date of such
Borrowing or the date of issuance, amendment,


                                      -43-

<PAGE>   48


renewal or extension of such Letter of Credit, as applicable, except to the
extent such representations and warranties relate to a prior date or after prior
notice to the Administrative Agent are untrue or incorrect as a result of
transactions permitted by the Loan Documents.

                  (b) At the time of and immediately after giving effect to such
Borrowing or the issuance, amendment, renewal or extension of such Letter of
Credit, as applicable, no Default shall have occurred and be continuing.

Each Borrowing and each issuance, amendment, renewal or extension of a Letter of
Credit shall be deemed to constitute a representation and warranty by the
Borrower on the date thereof as to the matters specified in paragraphs (a) and
(b) of this Section.


                                    ARTICLE V

                              Affirmative Covenants

                  Until the Commitments have expired or been terminated and the
principal of and interest on each Loan and all fees and other amounts payable
hereunder shall have been paid in full and all Letters of Credit shall have
expired or terminated and all LC Disbursements shall have been reimbursed, the
Borrower for itself and each of its Subsidiaries and each Subsidiary, for
itself, covenants and agrees with the Lenders that:

                  SECTION 5.01. Financial Statements; and Other Information. The
Borrower will furnish to the Administrative Agent and each Lender:

                  (a) within 90 days after the end of each fiscal year of the
Borrower, its audited consolidated balance sheet and related consolidated
statements of operations, stockholders' equity and cash flows as of the end of
and for such year, setting forth in each case (commencing with the financial
statements for the 2000 fiscal year) in comparative form the figures for the
previous fiscal year, all reported on by Arthur Andersen LLP or other
independent public accountants of recognized national standing (without a "going
concern" or like qualification or exception and without any qualification or
exception as to the scope of such audit) to the effect that such consolidated
financial statements present fairly in all material respects the consolidated
financial position and consolidated results of operations of the Borrower and
its consolidated Subsidiaries in conformity with GAAP, and all to be prepared in
accordance with GAAP consistently applied, except to the extent the Borrower's
independent auditors concur with any such inconsistency;

                  (b) within 45 days after the end of each fiscal quarter
(excluding any quarter containing the Borrower's fiscal year end) of the
Borrower, beginning with the quarters ended June 30, 1999, its consolidated
balance sheet and related statements of operations, stockholders' equity and
cash flows as of the end of and for such fiscal quarter and the then elapsed
portion of the fiscal year, setting forth in each case (commencing with
financial statements for periods ending after


                                      -44-

<PAGE>   49


the first anniversary of the Effective Date) in comparative form the figures for
the corresponding period or periods of (or, in the case of the balance sheet, as
of the end of) the previous fiscal year, all certified by one of its Financial
Officers as presenting fairly in all material respects the consolidated
financial condition and consolidated results of operations of the Borrower and
its consolidated Subsidiaries on a consolidated basis in accordance with GAAP
consistently applied, except for such changes with which the Borrower's
independent auditors concur, subject to normal year-end audit adjustments and
the absence of footnotes;

                  (c) concurrently with any delivery of financial statements
under clause (a) or (b) above, a certificate of a Financial Officer of the
Borrower (i) certifying as to whether a Default has occurred and, if a Default
has occurred, specifying the details thereof and any action taken or proposed to
be taken with respect thereto, (ii) setting forth reasonably detailed
calculations demonstrating compliance with Sections 6.08, 6.09, 6.10 and 6.11
and (iii) stating whether any change in GAAP or in the application thereof has
occurred since the date of the audited financial statements referred to in
Section 3.04 and, if any such change has occurred, specifying the effect of such
change on the financial statements accompanying such certificate;

                  (d) concurrently with any delivery of financial statements
under clause (a) above, a certificate of the accounting firm that reported on
such financial statements stating whether they obtained knowledge during the
course of their examination of such financial statements of any Default (which
certificate may be limited to the extent required by accounting rules or
guidelines);

                  (e) promptly upon receipt thereof, a copy of any management
letter or report submitted to the Borrower by its independent accountants in
connection with any regular or special audit;

                  (f) promptly after the same become publicly available, copies
of all periodic and other reports, proxy statements and other materials filed by
the Borrower or any Subsidiary with the Securities and Exchange Commission, or
any Governmental Authority succeeding to any or all of the functions of said
Commission, or with any national securities exchange, or distributed by the
Borrower to its shareholders generally;

                   (g) as soon as available and in any event within sixty (60)
days after the end of each fiscal year of the Borrower, the annual financial
projections and budgets of the Borrower and its Subsidiaries;

                  (h) concurrently with the delivery of financial statements
under (a) or (b) above, a summary of (i) all of the fee and leasehold properties
of the Borrower and its Subsidiaries including location and indicating whether
such property is subject to a Lien in favor of the Administrative Agent, and
(ii) all vehicles and rolling stock of the Borrower and its Subsidiaries,
including description and serial number; and



                                      -45-

<PAGE>   50


                  (i) promptly following any request therefor, such other
information regarding the operations, business affairs and financial condition
of the Borrower or any Subsidiary, or compliance with the terms of this
Agreement, as the Administrative Agent or any Lender may reasonably request.

                  SECTION 5.02. Notices of Material Events. The Borrower will
furnish to the Administrative Agent and each Lender prompt written notice of the
following:

                  (a) the occurrence of any Default;

                  (b) subject to the retention of the Borrower's attorney-client
privilege, the filing or commencement of any action, suit or proceeding by or
before any arbitrator or Governmental Authority against or affecting the
Borrower or any Affiliate thereof that, if adversely determined, could
reasonably be expected to result in a Material Adverse Effect;

                  (c) the occurrence of any ERISA Event that could reasonably be
expected to have a Material Adverse Effect; and

                  (d) any other development that results in, or could reasonably
be expected to result in, a Material Adverse Effect.

Each notice delivered under this Section shall be accompanied by a statement of
a Financial Officer or other executive officer of the Borrower setting forth the
details of the event or development requiring such notice and any action taken
or proposed to be taken with respect thereto.

                  SECTION 5.03. Existence; Conduct of Business; Location. (a)
The Borrower will, and will cause each of its Subsidiaries to, do or cause to be
done all things necessary to preserve, renew and keep in full force and effect
its legal existence and the rights, licenses, permits, privileges and franchises
material to the conduct of its business, unless the failure to so maintain would
not reasonably be expected to have a Material Adverse Effect.

                  (b) The Borrower will promptly notify the Administrative Agent
of any change of the Borrower's or any Subsidiary's name, corporate structure,
federal employer identification number, address of its principal place of
business or chief executive office where such Person maintains its books and
records.

                  SECTION 5.04. Payment of Obligations. The Borrower will, and
will cause each of its Subsidiaries to, pay its obligations, including Tax
liabilities, that, if not paid, could result in a Material Adverse Effect before
the same shall become delinquent or in default, except where (a) the validity or
amount thereof is being contested in good faith by appropriate proceedings, (b)
the Borrower or such Subsidiary has set aside on its books adequate reserves
with respect thereto in accordance with GAAP and (c) the failure to make payment
pending such contest could not reasonably be expected to result in a Material
Adverse Effect.



                                      -46-

<PAGE>   51


                  SECTION 5.05. Maintenance of Properties; Insurance. (a) The
Borrower will, and will cause each of its Subsidiaries to, keep and maintain all
property material to the conduct of its business in good working order and
condition, force majeure and ordinary wear and tear excepted.

                  (b) The Borrower will, and will cause each of its Subsidiaries
to, maintain (i) "all risk" insurance (at replacement cost) against loss or
damage to all property of the Borrower and its Subsidiaries, (ii) commercial
general liability insurance (including contractual liability, independent
contractors, products liability and completed operations coverage, (iii)
professional liability insurance (errors and omissions), (iv) directors and
officers liability insurance (v) workers compensation/employers liability
insurance (in amounts not less than minimum applicable statutory requirements),
(vi) automobile liability insurance, (vii) surety bond program and (viii) such
other insurance of such types as is usually carried by corporations of
established reputation engaged in the same or similar businesses and similarly
situated, and in each case with financially sound, responsible and reputable
insurance companies or associations (or, as to workers' compensation or similar
insurance, with an insurance fund or by self-insurance authorized by the
jurisdiction in which its operations are carried on) and in such amounts (and
with co-insurance and deductibles) as such insurance is usually carried by
corporations of established reputation and engaged in the same or similar
businesses and similarly situated, or self insurance programs reasonably
satisfactory to the Administrative Agent in respect of employee health insurance
programs only, but in any event, with respect to improvements to real property
and tangible personal property insuring the full replacement cost of such
improvements and the tangible personal property, subject to standard and
customary deductibles.

                  SECTION 5.06. Books and Records; Inspection Rights; Audits.
(a) The Borrower will, and will cause each of its Subsidiaries to, keep proper
books of record and account in which full, true and correct entries are made of
all dealings and transactions in relation to its business and activities which
shall, to the maximum extent possible, be kept in accordance with GAAP. The
Borrower will, and will cause each of its Subsidiaries to, permit any
representatives designated by the Administrative Agent or any Lender, upon
reasonable prior notice, to visit and inspect its properties, to examine and
make extracts from its books and records, and to discuss its affairs, finances
and condition with its officers and independent accountants, all at such
reasonable times and as often as reasonably requested so long as the Borrower
has an opportunity to have a representative participate or be present.

                  (b) The Borrower will, and will cause each of its Subsidiaries
to, permit representatives designated by the Administrative Agent to conduct a
review of the assets and perform an audit of the computer systems and equipment
of the Borrower and its Subsidiaries prior to December 31, 1999, the results of
which shall be reasonably satisfactory to the Required Lenders; and, to the
extent any changes, revisions, upgrades or equipment are necessary to remedy
such results, the Borrower will, and will cause each of its Subsidiaries to,
complete installation or implementation of such within 90 days of the completion
of the review and audit.



                                      -47-

<PAGE>   52



                  SECTION 5.07. Compliance with Laws. The Borrower will, and
will cause each of its Subsidiaries to, comply with all laws, rules, regulations
and orders of any Governmental Authority applicable to it or its property
including, without limitation, ERISA and all Environmental Laws, except where
the failure to do so, individually or in the aggregate, could not reasonably be
expected to result in a Material Adverse Effect.

                  SECTION 5.08. Use of Proceeds and Letters of Credit. The
proceeds of the Loans will be used only for (a) subject to Section 4.01(i), for
Acquisition of the Founding Companies, (b) refinancing Indebtedness existing on
the Effective Date, (c) subject to Section 6.11, making acquisitions of the
stock or assets of any Qualified Company and (d) for other general corporate
purposes. No part of the proceeds of any Loan will be used, whether directly or
indirectly, for any purpose that entails a violation of any of the regulations
of the Board, including Regulations U and X. Letters of Credit will be issued
only to support activities in connection with the uses permitted hereunder.

                  SECTION 5.09. Subsidiaries. Promptly upon any Person becoming
a Subsidiary of the Borrower, the Borrower will (a) cause such Person to
execute, in form and substance satisfactory to the Administrative Agent, (i) a
security agreement, deed of trust, mortgage, leasehold mortgage
and/or other security agreement granting a first priority perfected security
interest in all its material assets as collateral for the Loans, subject only to
Permitted Liens; provided that the Administrative Agent may waive, without the
consent of any Lender, the requirement that security interests be granted on any
leasehold interest if the underlying lease by its terms expressly prohibits such
assignment, (ii) UCC-1 financing statements to be filed in connection with such
security interest, (ii) a guaranty sufficient to obligate such Subsidiary for
repayment of all or a portion of the Loans and such other documents as the
Administrative Agent may request, all in form and substance reasonably
satisfactory to the Administrative Agent, and (b) execute, and cause any
Subsidiary to execute, as applicable, a pledge agreement in form and substance
reasonably satisfactory to the Administrative Agent pledging the shares of stock
of such Subsidiary and deliver the certificates evidencing such shares to the
Administrative Agent.

                  SECTION 5.10. Collateral. (a) The Borrower will, and will
cause each of its Subsidiaries to, (i) within 60 days of the Effective Date
provide to the Administrative Agent all Certificates of Title for each vehicle
with a gross vehicle weight in excess of 40,000 pounds, including all mixer
trucks and aggregate delivery trucks, owned by the Borrower or any Subsidiary
for the purpose of having the Administrative Agent for the benefit of the
Lenders recorded as lienholder on each of such Certificates of Title, (ii) have
recorded on each Certificate of Title for any vehicle weighing in excess of
40,000 pounds acquired after the Effective Date, the Administrative Agent as
lienholder for the benefit of the Lenders; provided, that in either case and so
long as there is no Default or Event of Default, any Certificate of Title which
evidences the Administrative Agent as lienholder for the benefit of the Lenders
shall be returned to the Borrower, and (iii) use reasonably commercial efforts
to provide to the Administrative Agent within 30 days of the Effective Date
landlord's consents to the assignment of leasehold estates not pledged pursuant
to Section 4.01(c)(iv)

                                      -48-

<PAGE>   53



and to execute leasehold deeds of trust or mortgages, subject only to Permitted
Liens, granting a first priority perfected security interest in such leasehold
interests.

                  (b) Upon acquisition of any interest in real property, the
Borrower will, and will cause each of its Subsidiaries to, execute in form and
substance reasonably satisfactory to the Administrative Agent, a deed of trust,
mortgage or leasehold mortgage, as applicable, granting a first priority
perfected Lien on such property as collateral for the Loans, subject only to
Permitted Liens.

                  (c) The Borrower will, and will cause each of its Subsidiaries
to, use reasonably commercial efforts in negotiating any material new lease or
the renewal or extension of any existing lease covering real property to provide
in such lease that the interest of the lessee may be hypothecated without any
further approval of the landlord.

                  (d) The Borrower shall provide to the Administrative Agent
certified copies of Requests for Information or Copies (Form UCC-11) or
equivalent commercially obtained reports, dated within 30 days of the Effective
Date listing all effective financing statements which name any of the Borrower
or any Founding Company or any of their Subsidiaries (under any of their present
names and any previous names) as debtor and which are filed in all jurisdictions
in which the Borrower or any of its Subsidiaries owns property or conducts
business, together with copies of such financing statements.

                  (e) The Borrower shall provide to the Administrative Agent,
upon request, a bring down or date down certificate to any preliminary title
reports provided pursuant to Section 4.01(q), as evidence to the Administrative
Agent of satisfactory release of any financing or tax lien encumbering any
property subject to the Security Documents delivered pursuant to Section
4.01(c)(iv).

                  SECTION 5.11. Employee Agreements. Upon request of the
Administrative Agent, the Borrower and its Subsidiaries shall provide to the
Administrative Agent copies of all material agreements relating to the employees
of the Borrower and its Subsidiaries, including all collective bargaining
agreements, employment contracts, non-compete agreements, employee savings,
employee retirement and employee benefit plans. Upon request of the
Administrative Agent, the Borrower will provide a list of (a) each employment
agreement between the Borrower and each of its officers, (b) each employment
agreement between any Subsidiary and the key employees of such Subsidiary (or
its predecessor), (c) each union with which any Subsidiary of the Borrower has
entered into a collective bargaining agreement, and (iv) each employee pension
benefit plan (as defined in ERISA) sponsored by the Borrower or any Subsidiary.

                  SECTION 5.12. Compliance With Leases. The Borrower shall, and
shall cause each of its Subsidiaries to, perform and observe all covenants,
agreements, terms, conditions and limitations applicable to such Person
contained in any Lease and shall do all things necessary to keep unimpaired all
of its rights thereunder and to prevent any default thereunder or any forfeiture
or

                                      -49-

<PAGE>   54


impairment thereof, except as to any nonperformance, nonobservance, default or
forfeiture which would not reasonably be expected to result in a Material
Adverse Effect.


                                   ARTICLE VI

                               Negative Covenants

                  Until the Commitments have expired or terminated and the
principal of and interest on each Loan and all fees and other amounts payable
hereunder have been paid in full and all Letters of Credit have expired or
terminated and all LC Disbursements shall have been reimbursed, the Borrower
covenants and agrees with the Lenders that:

                  SECTION 6.01. Indebtedness. The Borrower will not, and will
not permit any Subsidiary to, create, incur, assume or permit to exist any
Indebtedness, except:

                  (a) Indebtedness created hereunder;

                  (b) Indebtedness existing on the date hereof and set forth in
Schedule 6.01 and extensions, renewals and replacements of any such Indebtedness
that do not increase the outstanding principal amount thereof;

                  (c) Indebtedness of the Borrower to any wholly-owned
Subsidiary and of any Subsidiary to the Borrower or any other Subsidiary;

                  (d) Indebtedness of the Borrower or any Subsidiary incurred to
finance, or assumed in connection with, any Acquisition or the acquisition of
other assets, including Capital Lease Obligations and extensions, renewals and
replacements of any such Indebtedness that do not increase the outstanding
principal amount thereof; provided that (i) such Indebtedness is incurred prior
to or within 90 days after such Acquisition or acquisition, (ii) such
Indebtedness was not incurred by such Person in contemplation of such
Acquisition and (iii) the aggregate principal amount of Indebtedness permitted
by clause (b) above and this clause (d) shall not exceed 5% of the consolidated
tangible net worth of the Borrower at any time outstanding;

                  (e) Indebtedness in the amount of $9,000,000 to the
shareholders of certain of the Founding Companies as described in the
Registration Statement, which Indebtedness will be due and owing within 90 days
after the Effective Date; and

                  (f)      Interest Rate Risk Indebtedness.

                  SECTION 6.02. Liens. The Borrower will not, and will not
permit any Subsidiary to, create, incur, assume or permit to exist any Lien on
any property or asset now owned or hereafter


                                      -50-

<PAGE>   55


acquired by it, or assign or sell any income or revenues (including accounts
receivable) or rights in respect of any thereof, except:

                  (a) Permitted Encumbrances;

                  (b) Any Lien on any property or asset of the Borrower or any
Subsidiary securing Indebtedness permitted in Section 6.01(b) or 6.01(d);
provided that (i) such Lien shall not apply to any other property or asset other
than accessions, improvements, upgrades and the proceeds thereof of the Borrower
or any Subsidiary and (ii) such Lien shall secure only those obligations which
it secures on the date hereof and extensions, renewals and replacements thereof
that do not increase the outstanding principal amount thereof;

                  (c) Liens in favor of the Administrative Agent securing the
Obligations; and

                  (d) Liens securing potential prepayment obligations of
Walker's Concrete, Inc. to Union Bank of California encumbering assets of
Walker's Concrete, Inc., provided, (i) no further Indebtedness is owing by the
Company or any Subsidiary to said bank, and (ii) said Liens are fully
extinguished and released prior to June 30, 1999; and

                  (e) Renewals and extensions of the above on similar terms and
conditions.

                  SECTION 6.03. Fundamental Changes. (a) The Borrower will not,
and will not permit any Subsidiary to, merge into or consolidate with any other
Person, or permit any other Person to merge into or consolidate with it, or
sell, transfer, lease or otherwise dispose of (in one transaction or in a series
of transactions) all or any substantial part of its assets, or all or
substantially all of the stock of any of its Subsidiaries (in each case, whether
now owned or hereafter acquired), or liquidate or dissolve, except that, if at
the time thereof and immediately after giving effect thereto no Default shall
have occurred and be continuing, (i) any Subsidiary may merge into the Borrower
in a transaction in which the Borrower is the surviving Person, (ii) any
Subsidiary may merge into any Subsidiary in a transaction in which the surviving
entity is a Subsidiary, (iii) the Borrower or any Subsidiary may sell, transfer,
lease or otherwise dispose of its assets to the Borrower or to another
Subsidiary and (iv) any Subsidiary may liquidate or dissolve if the Borrower
determines in good faith that such liquidation or dissolution is in the best
interests of the Borrower and is not materially disadvantageous to the Lenders;
provided that any such merger involving a Person that is not a wholly owned
Subsidiary immediately prior to such merger shall not be permitted unless also
permitted by Section 6.04.

                  (b) The Borrower will not, and will not permit any of its
Subsidiaries to, engage to any material extent in any business other than
businesses of the type conducted by the Borrower and its Subsidiaries on the
date of execution of this Agreement and businesses reasonably related thereto.



                                      -51-

<PAGE>   56

                  SECTION 6.04. Investments, Loans, Advances, Guarantees and
Acquisitions. The Borrower will not, and will not permit any of its Subsidiaries
to, purchase, hold or acquire (including pursuant to any merger with any Person
that was not a wholly owned Subsidiary prior to such merger) any capital stock,
evidences of indebtedness or other securities (including any option, warrant or
other right to acquire any of the foregoing) of, make or permit to exist any
loans or advances to, Guarantee any obligations of, or make or permit to exist
any investment or any other interest in, any other Person, or purchase or
otherwise acquire (in one transaction or a series of transactions) any assets of
any other Person constituting a business unit, except:

                  (a) Permitted Investments;

                  (b) investments by the Borrower existing on the date hereof as
set forth on Schedule 6.04, including investments in its direct and indirect
Subsidiaries;

                  (c) equity investments by the Company or any Subsidiary in any
Subsidiary and loans or advances made by the Borrower to any wholly-owned
Subsidiary and made by any wholly-owned Subsidiary to the Borrower or any other
Subsidiary; and

                  (d) subject to the limitations contained in Section 6.11,
investments in the stock, warrants, stock appreciation rights, other securities
and/or other assets of Qualified Companies.

                  SECTION 6.05. Restricted Payments. The Borrower will not, and
will not permit any of its Subsidiaries to, declare or make, or agree to pay or
make, directly or indirectly, any Restricted Payment, except Subsidiaries may
declare and pay dividends to the Borrower and the Borrower may redeem capital
stock in an aggregate amount not to exceed $500,000.

                  SECTION 6.06. Transactions with Affiliates. The Borrower will
not, and will not permit any of its Subsidiaries to, sell, lease or otherwise
transfer any property or assets to, or purchase, lease or otherwise acquire any
property or assets from, or otherwise engage in any other transactions with, any
of its Affiliates, except (a) in the ordinary course of business at prices and
on terms and conditions not less favorable to the Borrower or such Subsidiary
than could be obtained on an arm's-length basis from unrelated third parties,
(b) transactions between or among the Borrower and its wholly owned Subsidiaries
not involving any other Affiliate, (c) any Restricted Payment permitted by
Section 6.05, (d) compensation and other benefits paid to officers, directors
and employees, (e) transactions contemplated by the Acquisition of the Founding
Companies and (f) other arrangements in effect on the date hereof and disclosed
in the Registration Statement.

                  SECTION 6.07. Restrictive Agreements. The Borrower will not,
and will not permit any of its Subsidiaries to, directly or indirectly, enter
into, incur or permit to exist any agreement or other arrangement that
prohibits, restricts or imposes any condition upon (a) the ability of the
Borrower or any Subsidiary to create, incur or permit to exist any Lien upon any
of its property or assets, or (b) the ability of any Subsidiary to pay dividends
or other distributions with respect to any shares of its capital stock or to
make or repay loans or advances to the Borrower or any other

                                      -52-

<PAGE>   57


Subsidiary or to guarantee Indebtedness of the Borrower or any other Subsidiary;
provided that (i) the foregoing shall not apply to restrictions and conditions
imposed by law or by this Agreement or the Loan Documents, (ii) the foregoing
shall not apply to customary restrictions and conditions contained in agreements
relating to the sale of a Subsidiary pending such sale, provided such
restrictions and conditions apply only to the Subsidiary that is to be sold and
such sale is permitted hereunder, (iii) clause (a) of the foregoing shall not
apply to customary provisions in leases and other contracts restricting the
assignment thereof and (iv) and the foregoing shall not apply to restrictions

                  (A) existing on the Effective Date;

                  (B) relating to any Indebtedness of any Subsidiary existing at
         the date on which such Subsidiary was acquired by the Company or any
         Subsidiary (other than Indebtedness incurred in anticipation of such
         Acquisition);

                  (C) effecting a refinancing of Indebtedness incurred pursuant
         to an agreement referred to in the foregoing clauses (a) and (b), so
         long as the encumbrances and restrictions contained in any such
         refinancing agreement are no more restrictive than the encumbrances and
         restrictions contained in such agreements;

                  (D) constituting restrictions on the sale or other disposition
         of any Property securing Indebtedness as a result of a Permitted
         Encumbrance on such property; and

                  (E) constituting provisions contained in agreements or
         instruments relating to Indebtedness which prohibit the transfer of all
         or substantially all of the assets of the obligor thereunder unless the
         transferee shall assume the obligations of the obligor under such
         agreement or instrument.

                  SECTION 6.08. Financial Ratios. The following financial ratios
will be calculated as of each Financial Statement Delivery Date for the
immediately preceding period of four quarters to which the financial statements
relate after giving pro forma effect to the Acquisition of the Founding
Companies.

                  (a) Fixed Charge Coverage Ratio. The Borrower will not at any
time permit the ratio of (i) EBITDA (excluding any EBITDA computed pursuant to
clause (b) of the definition of EBITDA) minus cash federal, state and local
income and franchise taxes actually paid during such period (or, for any period
prior to the Acquisition of the Founding Companies, 40.8% of pro forma
consolidated pre-tax net income of the Borrower and its Subsidiaries for such
included period), to (ii) cash interest expense, actually paid during such
period (including the interest expense portion of any payments on Capitalized
Lease Obligations but net of cash interest income actually received during such
period) plus Maintenance Capital Expenditures for said period, to be less than
2.25 to 1.0 at any time during the term hereof. For purposes of determining
interest expense during the first four quarters of this Agreement, actual cash
interest expense for any period from the Effective Date

                                      -53-

<PAGE>   58


through the end of the period being calculated shall be annualized and interest
expense prior to the Effective Date shall be disregarded.

                  (b) Asset Coverage Ratio. The Borrower will not at any time
permit the ratio of: (a) (i) accounts receivable plus (ii) inventory plus (iii)
the net book value of all property, plant and equipment in each case as
reflected on the financial statements delivered pursuant to Section 5.01, to (b)
Funded Debt, to be less than 1.5 to 1.0.

                  (c) Leverage Ratio. The Borrower will not at any time permit
the ratio of (i) Funded Debt to (ii) EBITDA, to be greater than 2.25 to 1.00.

                  SECTION 6.09. Net Worth. The Borrower will not permit at any
time during the term hereof consolidated net worth to be less than eighty-five
percent (85%) of the proforma, consolidated net worth as shown in the
Registration Statement, plus fifty percent (50%) of after tax net income (if
positive) of the Borrower and its Subsidiaries since the date hereof for each
theretofore completed fiscal year during the term hereof, plus one hundred
percent (100%) of the net cash proceeds theretofore received subsequent to the
Effective Date from the issuance of any capital stock by the Borrower or any
Subsidiary (other than from the Borrower or another Subsidiary) subsequent to
the date hereof.

                  SECTION 6.10. Capital Expenditures. The Borrower will not, and
will not permit its Subsidiaries to, make any Capital Expenditure (including any
Capitalized Lease Obligations) if, after giving effect thereto, the aggregate of
all such expenditures would exceed $10,000,000 during any fiscal year.

                  SECTION 6.11. Limitation of Acquisitions. The Borrower will
not, and will not permit any Subsidiary to, acquire any stock or assets of any
Qualified Company (other than the Founding Companies) without the prior written
consent of the Required Lenders if (a) the consideration (defined as total net
cash to be paid plus Indebtedness to be assumed) for any such proposed
acquisition exceeds 7.50% of the consolidated net worth of the Borrower and its
Subsidiaries (pre-acquisition) as reflected in the most recent consolidated
balance sheet delivered pursuant to Section 5.01 hereof or (b) the total
consideration (defined as total net cash to be paid plus Indebtedness to be
assumed plus the value of any stock of the Borrower or any Subsidiary given as
consideration, as reflected on the Borrower's consolidated balance sheet, plus
related Acquisition costs) exceeds 15.0% of the consolidated net worth of the
Borrower and its Subsidiaries (pre-acquisition) as reflected on the most recent
consolidated balance sheet delivered pursuant to Section 5.01 hereof; and
provided the Borrower is in compliance with all of the following:

                           (i) no Default or Event of Default is in existence at
         the time of the consummation of such proposed Acquisition or would
         exist after giving effect thereto, all representations and warrants
         contained herein and in the other Loan Documents shall be true and
         correct in all material respects with the same effect as though such
         representations and warranties were made on and as of the date of such
         proposed Acquisition (both before and

                                      -54-

<PAGE>   59

         after giving effect thereto), and no other agreement, contract or
         instrument to which the Borrower is a party restricts such proposed
         Acquisition;

                           (ii)  the Borrower shall have given the
         Administrative Agent and the Lenders at least ten (10) Business Days
         prior written notice of any such proposed Acquisition (each of such
         notices, a "Permitted Acquisition Notice"), which notice must be timely
         provided and must be accompanied by all of the information required in
         this Section 6.11 and shall (A) contain the estimated date such
         proposed Acquisition is scheduled to be consummated, (B) attach a true
         and correct copy of the draft purchase agreement (if available), letter
         of intent, description of material terms or similar agreements executed
         by the parties thereto in connection with such proposed Acquisition,
         (C) contain the estimated aggregate purchase price of such proposed
         Acquisition and the estimated amount of related costs and expenses and
         the intended method of financing thereof, and (D) contain the estimated
         amount of Loans required to effect such proposed Acquisition;

                           (iii) concurrently with delivery of the Permitted
         Acquisition Notice, the Borrower shall have provided the Administrative
         Agent and the Lenders with all information related to the proposed
         Acquisition as is reasonably required in the form of Acquisition
         Information worksheet attached hereto as Exhibit 6.11, and, promptly
         upon request, such additional information as the Administrative Agent
         shall reasonably request, including, delivery of the expert reports (if
         any) prepared by accounting, environmental, and/or other experts which
         the Borrower has obtained and the Administrative Agent shall reasonably
         request;

                           (iv)  (A) as soon as available but not less than the
         earlier of three (3) days after the execution thereof, a copy of the
         executed principal Acquisition Documents with respect to such proposed
         Acquisition and (B) at the time of delivery of the Acquisition
         Documents, certification from the Borrower as to the purchase price for
         the Acquisition (or a formula therefor) and the estimated amount of all
         related costs, fees and expenses and that, except as described, there
         are no other amounts which will be payable in connection with such
         proposed Acquisition;

                           (v)   recalculations of the calculations set forth in
         the certificate most recently delivered pursuant to Section 5.01(c) are
         made by the Borrower of compliance with the covenants contained in
         Section 6.08 through 6.11, inclusive, and such recalculations shall
         show that during the period of four fiscal quarters covered by that
         certificate, on a pro forma basis, the Borrower would have been in
         compliance therewith;

                           (vi)  the Borrower shall have delivered updated
         schedules to any Acquisition Agreement related to such proposed
         Acquisition to the Administrative Agent; and


                                      -55-

<PAGE>   60


                           (vii) prior to the consummation of the proposed
         Acquisition, the Borrower shall furnish the Administrative Agent and
         the Lenders an officer's certificate executed by a Financial Officer of
         the Borrower, certifying as to compliance with the requirements of the
         applicable preceding clauses (i) through (vi), containing the
         calculations required in this Section 6.11. The consummation of each
         Acquisition shall be deemed to be a representation and warranty by the
         Borrower that all conditions thereto have been satisfied and that same
         is permitted in accordance with the terms of this Agreement, which
         representation and warranty shall be deemed to be a representation and
         warranty for all purposes hereunder; and

further provided, that for any Acquisition, regardless of the consideration
paid, the Borrower must be in compliance with clauses (i) and (iii) above.

                  SECTION 6.12. Hedging Agreement. The Borrower will not, and
will not permit any Subsidiary to, enter into any Hedging Agreement.

                  SECTION 6.13 Additional Borrowings Under Union Bank
Indebtedness. The Company will not, and will not permit any Subsidiary,
including, without limitation, Walker's Concrete, Inc., to borrow, accept any
advances under, or in any manner increase its liability in respect of, the
documents evidencing certain Indebtedness and obligations of said Subsidiary to
Union Bank of California, N.A.

                                   ARTICLE VII

                         Events of Default and Remedies

                  SECTION 7.01. Events of Default.

                  The following events ("Events of Default") shall constitute
Events of Default hereunder:

                  (a) the Borrower shall fail to pay any principal of any Loan
or any reimbursement obligation in respect of any LC Disbursement when and as
the same shall become due and payable, whether at the due date thereof or at a
date fixed for prepayment thereof or otherwise;

                  (b) the Borrower shall fail to pay any interest on any Loan or
any fee or any other amount (other than an amount referred to in clause (a) of
this Section 7.01) payable under this Agreement, when and as the same shall
become due and payable;

                  (c) any representation or warranty made or deemed made by or
on behalf of the Borrower or any Subsidiary in or in connection with this
Agreement or any other Loan Document or any amendment or modification hereof or
thereof or waiver hereunder or thereunder, or in any report, certificate,
financial statement or other document furnished pursuant to or in connection
with

                                      -56-

<PAGE>   61


this Agreement or any amendment or modification hereof or waiver hereunder,
shall prove to have been incorrect in any material respect when made or deemed
made;

                  (d) the Borrower shall fail to observe or perform any
covenant, condition or agreement contained in Section 5.02(a), 5.03 (with
respect to the Borrower's existence) or 5.08 or in Article VI;

                  (e) the Borrower shall fail to observe or perform any
covenant, condition or agreement contained in this Agreement (other than those
specified in clause (a), (b) or (d) of this Section 7.01), and such failure
shall continue unremedied for a period of fifteen (15) days after notice thereof
from the Administrative Agent to the Borrower (which notice will be given at the
request of any Lender);

                  (f) the Borrower or any Subsidiary shall fail to make any
payment (whether of principal or interest and regardless of amount) in respect
of any Material Indebtedness, when and as the same shall become due and payable;

                  (g) any event or condition occurs that results in the holder
of any Material Indebtedness becoming due prior to its scheduled maturity or
that enables or permits (with or without the giving of notice, the lapse of time
or both) the holder or holders of any Material Indebtedness or any trustee or
agent on its or their behalf to cause any Material Indebtedness to become due,
or to require the prepayment, repurchase, redemption or defeasance thereof,
prior to its scheduled maturity;

                  (h) an involuntary proceeding shall be commenced or an
involuntary petition shall be filed seeking (i) liquidation, reorganization or
other relief in respect of the Borrower or any Subsidiary or its debts, or of a
substantial part of its assets, under any Federal, state or foreign bankruptcy,
insolvency, receivership or similar law now or hereafter in effect or (ii) the
appointment of a receiver, trustee, custodian, sequestrator, conservator or
similar official for the Borrower or any Subsidiary or for a substantial part of
its assets, and, in any such case, such proceeding or petition shall continue
undismissed for 60 days or an order or decree approving or ordering any of the
foregoing shall be entered;

                  (i) the Borrower or any Subsidiary shall (i) voluntarily
commence any proceeding or file any petition seeking liquidation, reorganization
or other relief under any Federal, state or foreign bankruptcy, insolvency,
receivership or similar law now or hereafter in effect, (ii) consent to the
institution of, or fail to contest in a timely and appropriate manner, any
proceeding or petition described in clause (h) of this Section 7.01, (iii) apply
for or consent to the appointment of a receiver, trustee, custodian,
sequestrator, conservator or similar official for the Borrower or any Subsidiary
or for a substantial part of its assets, (iv) file an answer admitting the
material allegations of a petition filed against it in any such proceeding, (v)
make a general assignment for the benefit of creditors or (vi) take any action
for the purpose of effecting any of the foregoing;



                                      -57-

<PAGE>   62



                  (j) the Borrower or any Subsidiary shall become unable, admit
in writing its inability or fail generally to pay its debts as they become due;

                  (k) one or more judgments for the payment of money in an
aggregate amount in excess of $500,000 (not covered by insurance subject to
customary deductible) shall be rendered against the Borrower, any Subsidiary or
any combination thereof and the same shall remain undischarged for a period of
30 consecutive days during which execution shall not be effectively stayed, or
any action shall be legally taken by a judgment creditor to attach or levy upon
any assets of the Borrower or any Subsidiary to enforce any such judgment;

                  (l) an ERISA Event shall have occurred that, in the opinion of
the Required Lenders, when taken together with all other ERISA Events that have
occurred, could reasonably be expected to result in liability of the Borrower
and its Subsidiaries in an aggregate amount exceeding (i) $500,000 in any year
or (ii) $500,000 for all periods;

                  (m) a Change in Control shall occur; or

                  (n) any material Loan Document shall be determined by the
Administrative Agent, in its good faith judgment to be unenforceable in any
material respect or Borrower or any Subsidiary shall claim such to be the case
other than in accordance with its terms or the terms of the other Loan
Documents.

                  SECTION 7.02. Remedies. On the occurrence of any event
described in Section 7.01 (other than an event with respect to the Borrower
described in clause (h) or (i) thereof), and at any time thereafter during the
continuance of such event, the Administrative Agent may, and at the request of
the Required Lenders shall, by notice to the Borrower, take either or both of
the following actions, at the same or different times: (i) terminate the
Commitments, and thereupon the Commitments shall terminate immediately, (ii)
declare the Loans then outstanding to be due and payable in whole (or in part,
in which case any principal not so declared to be due and payable may thereafter
be declared to be due and payable), and thereupon the principal of the Loans so
declared to be due and payable, together with accrued and unpaid interest
thereon and all fees and other obligations of the Borrower accrued hereunder,
shall become due and payable immediately, without notice, presentment, demand,
protest or other notice of any kind, all of which are hereby waived by the
Borrower; and in case of any event with respect to the Borrower described in
clause (h) or (i) of Section 7.01 of this Article, the Commitments shall
automatically terminate and the principal of the Loans then outstanding,
together with accrued interest thereon and all fees and other obligations of the
Borrower accrued hereunder, shall automatically become due and payable, without
presentment, demand, protest or other notice of any kind, all of which are
hereby waived by the Borrower, (iii) set off any amounts of the Borrower or any
Subsidiary held by it, (d) exercise any other rights or remedies described in
the other Loan Documents, including, without limitation, each of the Security
Documents, and (iv) exercise such other rights as are available to lenders and
secured parties at law or in equity.




                                      -58-

<PAGE>   63



                                  ARTICLE VIII

                            The Administrative Agent

                  Each of the Lenders and the Issuing Bank hereby irrevocably
appoints the Administrative Agent as its agent and authorizes the Administrative
Agent to take such actions on its behalf and to exercise such powers as are
delegated to the Administrative Agent by the terms hereof, together with such
actions and powers as are reasonably incidental thereto.

                  The bank serving as the Administrative Agent hereunder shall
have the same rights and powers in its capacity as a Lender as any other Lender
and may exercise the same as though it were not the Administrative Agent, and
such bank and its Affiliates may accept deposits from, lend money to and
generally engage in any kind of business with the Borrower or any Subsidiary or
other Affiliate thereof as if it were not the Administrative Agent hereunder.

                  The Administrative Agent shall not have any duties or
obligations except those expressly set forth herein. Without limiting the
generality of the foregoing, (a) the Administrative Agent shall not be subject
to any fiduciary or other implied duties, regardless of whether a Default has
occurred and is continuing, (b) the Administrative Agent shall not have any duty
to take any discretionary action or exercise any discretionary powers, except
discretionary rights and powers expressly contemplated hereby that the
Administrative Agent is required to exercise in writing by the Required Lenders
(or such other number or percentage of the Lenders as shall be necessary under
the circumstances as provided in Section 9.02), and (c) except as expressly set
forth herein, the Administrative Agent shall not have any duty to disclose, and
shall not be liable for the failure to disclose, any information relating to the
Borrower or any of its Subsidiaries or Affiliates that is communicated to or
obtained by the bank serving as Administrative Agent or any of its Affiliates in
any capacity. The Administrative Agent shall not be liable for any action taken
or not taken by it with the consent or at the request of the Required Lenders
(or such other number or percentage of the Lenders as shall be necessary under
the circumstances as provided in Section 9.02) or in the absence of its own
gross negligence or wilful misconduct. The Administrative Agent shall be deemed
not to have knowledge of any Default unless and until written notice thereof is
given to the Administrative Agent by the Borrower or a Lender, and the
Administrative Agent shall not be responsible for or have any duty to ascertain
or inquire into (i) any statement, warranty or representation made in or in
connection with this Agreement, (ii) the contents of any certificate, report or
other document delivered hereunder or in connection herewith, (iii) the
performance or observance of any of the covenants, agreements or other terms or
conditions set forth herein, (iv) the validity, enforceability, effectiveness or
genuineness of this Agreement or any other agreement, instrument or document, or
(v) the satisfaction of any condition set forth in Article IV or elsewhere
herein, other than to confirm receipt of items expressly required to be
delivered to the Administrative Agent.

                  The Administrative Agent shall be entitled to rely upon, and
shall not incur any liability for relying upon, any notice, request,
certificate, consent, statement, instrument, document or other writing believed
by it to be genuine and to have been signed or sent by the proper Person.

                                      -59-

<PAGE>   64



The Administrative Agent also may rely upon any statement made to it orally or
by telephone and believed by it to be made by the proper Person, and shall not
incur any liability for relying thereon. The Administrative Agent may consult
with legal counsel (who may be counsel for the Borrower), independent
accountants and other experts selected by it, and shall not be liable for any
action taken or not taken by it in accordance with the advice of any such
counsel, accountants or experts.

                  The Administrative Agent may perform any and all its duties
and exercise its rights and powers by or through any one or more sub-agents
appointed by the Administrative Agent. The Administrative Agent and any such
sub-agent may perform any and all its duties and exercise its rights and powers
through their respective Related Parties. The exculpatory provisions of the
preceding paragraphs shall apply to any such sub-agent and to the Related
Parties of the Administrative Agent and any such sub-agent, and shall apply to
their respective activities in connection with the syndication of the credit
facilities provided for herein as well as activities as Administrative Agent.

                  Subject to the appointment and acceptance of a successor
Administrative Agent as provided in this paragraph, the Administrative Agent may
resign at any time by notifying the Lenders, the Issuing Bank and the Borrower.
Upon any such resignation, the Required Lenders shall have the right, in
consultation with the Borrower, to appoint a successor. If no successor shall
have been so appointed by the Required Lenders and shall have accepted such
appointment within 30 days after the retiring Administrative Agent gives notice
of its resignation, then the retiring Administrative Agent may, on behalf of the
Lenders and the Issuing Bank, appoint a successor Administrative Agent which
shall be a bank with an office in Houston, Texas, or an Affiliate of any such
bank. Upon the acceptance of its appointment as Administrative Agent hereunder
by a successor, such successor shall succeed to and become vested with all the
rights, powers, privileges and duties of the retiring Administrative Agent, and
the retiring Administrative Agent shall be discharged from its duties and
obligations hereunder. The fees payable by the Borrower to a successor
Administrative Agent shall be the same as those payable to its predecessor
unless otherwise agreed between the Borrower and such successor. After the
Administrative Agent's resignation hereunder, the provisions of this Article and
Section 9.03 shall continue in effect for the benefit of such retiring
Administrative Agent, its subagents and their respective Related Parties in
respect of any actions taken or omitted to be taken by any of them while it was
acting as Administrative Agent.

                  Each Lender acknowledges that it has, independently and
without reliance upon the Administrative Agent or any other Lender and based on
such documents and information as it has deemed appropriate, made its own credit
analysis and decision to enter into this Agreement. Each Lender also
acknowledges that it will, independently and without reliance upon the
Administrative Agent or any other Lender and based on such documents and
information as it shall from time to time deem appropriate, continue to make its
own decisions in taking or not taking action under or based upon this Agreement,
any related agreement or any document furnished hereunder or thereunder.


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<PAGE>   65


                                   ARTICLE IX

                                  Miscellaneous

                  SECTION 9.01. Notices. Except in the case of notices and other
communications expressly permitted to be given by telephone, all notices and
other communications provided for herein shall be in writing and shall be
delivered by hand or overnight courier service, mailed by certified or
registered mail or sent by telecopy, as follows:

                  (a)      if to the Borrower or to any Guarantor,

                           U.S. Concrete
                           1360 Post Oak Blvd., Suite 800
                           Houston, Texas 77056
                           Attention:  Michael Harlan
                           Telephone No.:  (713) 350-6017
                           Telecopy No.:  (713) 350-6001

                  (b)      if to the Administrative Agent,

                           Chase Bank of Texas, National Association
                           712 Main Street, 5th Floor East
                           Houston, Texas 77002
                           Attention: Michael Ondruch
                           Telephone No.:  (713) 216-5324
                           Telecopy No.: (713) 216-6004

                           with copies to

                           The Chase Manhattan Bank
                           Agency Services
                           One Chase Manhattan Plaza, 8th Floor
                           New York, New York 10081
                           Attention: Muniram Appanna
                           Telecopy No.:  (212) 552-7940
                           Telephone No.: (212) 552-7943

                  (c)      if to the Issuing Bank,

                           Chase Bank of Texas, National Association
                           712 Main Street, 5th Floor East
                           Houston, Texas 77002
                           Attention: Michael Ondruch
                           Telecopy No.:  (713) 216-6004
                           Telephone No.: (713) 216-5324


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<PAGE>   66


                  (d) if to any other Lender, to it at its address (or telecopy
number) set forth in its Administrative Questionnaire.

Any party hereto may change its address or telecopy number for notices and other
communications hereunder by notice to the other parties hereto. All notices and
other communications given to any party hereto in accordance with the provisions
of this Agreement shall be deemed to have been given on the date of receipt.

                  SECTION 9.02. Waivers; Amendments. (a) To the extent permitted
by law, no failure or delay by the Administrative Agent, the Issuing Bank or any
Lender in exercising any right or power hereunder shall operate as a waiver
thereof, nor shall any single or partial exercise of any such right or power, or
any abandonment or discontinuance of steps to enforce such a right or power,
preclude any other or further exercise thereof or the exercise of any other
right or power. To the extent permitted by law, the rights and remedies of the
Administrative Agent, the Issuing Bank and the Lenders hereunder are cumulative
and are not exclusive of any rights or remedies that they would otherwise have.
To the extent permitted by law, no waiver of any provision of this Agreement or
consent to any departure by the Borrower therefrom shall in any event be
effective unless the same shall be permitted by paragraph (b) of this Section,
and then such waiver or consent shall be effective only in the specific instance
and for the purpose for which given. Without limiting the generality of the
foregoing, the making of a Loan or issuance of a Letter of Credit shall not be
construed as a waiver of any Default, regardless of whether the Administrative
Agent, any Lender or the Issuing Bank may have had notice or knowledge of such
Default at the time.

                  (b) Neither this Agreement nor any provision hereof may be
waived, amended or modified except pursuant to an agreement or agreements in
writing entered into by the Borrower and the Required Lenders or by the Borrower
and the Administrative Agent with the consent of the Required Lenders; provided
that no such agreement shall (i) increase the Commitment of any Lender without
the written consent of such Lender, (ii) reduce the principal amount of any Loan
or LC Disbursement or reduce the rate of interest thereon, or reduce any fees or
other amounts payable hereunder, without the written consent of each Lender
affected thereby, (iii) postpone the scheduled date of payment of the principal
amount of any Loan or LC Disbursement, or any interest thereon, or any fees or
other amounts payable hereunder, or reduce the amount of, waive or excuse any
such payment, or postpone the scheduled date of expiration of any Commitment,
without the written consent of each Lender affected thereby, (iv) change Section
2.16(b) or (c) in a manner that would alter the pro rata sharing of payments
required thereby, without the written consent of each Lender, (v) release any
Collateral securing the Obligations, without the written consent of each Lender,
provided that the Administrative Agent may release any collateral sold or
transferred as permitted under this Agreement by the Borrower or any Subsidiary
in the ordinary course of business, (vi) release any Guarantor or any other
Person liable for the repayment of the Obligations, without the written consent
of each Lender or (vii) change any of the provisions of this Section or the
definition

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<PAGE>   67



of "Required Lenders" or any other provision hereof specifying the number or
percentage of Lenders required to waive, amend or modify any rights hereunder or
make any determination or grant any consent hereunder, without the written
consent of each Lender; provided further that no such agreement shall amend,
modify or otherwise affect the rights or duties of the Administrative Agent or
the Issuing Bank hereunder without the prior written consent of the
Administrative Agent and the Issuing Bank, as the case may be.

                  SECTION 9.03. Expenses; Indemnity; Damage Waiver. (a) The
Borrower shall pay (i) all reasonable out-of-pocket expenses incurred by the
Administrative Agent and its Affiliates, including the reasonable fees, charges
and disbursements of counsel for the Administrative Agent, in connection with
the syndication of the credit facilities provided for herein, the preparation,
execution and delivery of this Agreement or any amendments, modifications or
waivers of the provisions hereof (whether or not the transactions contemplated
hereby or thereby shall be consummated), (ii) all reasonable out-of-pocket
expenses incurred by the Issuing Bank in connection with the issuance,
amendment, renewal or extension of any Letter of Credit or any demand for
payment thereunder and (iii) all reasonable out-of-pocket expenses incurred by
the Administrative Agent, the Issuing Bank or any Lender, including the
reasonable fees, charges and disbursements of any counsel for the Administrative
Agent, the Issuing Bank or any Lender, in connection with the enforcement or
protection of its rights in connection with this Agreement, the Security
Documents and the other Loan Documents, including its rights under this Section,
or in connection with the Loans made or Letters of Credit issued hereunder,
including all such reasonable out-of-pocket expenses incurred during any workout
or restructuring of such Loans or Letters of Credit.

                  (b) The Borrower shall and hereby does indemnify the
Administrative Agent, the Issuing Bank and each Lender, and each Related Party
of any of the foregoing Persons (each such Person being called an "Indemnitee")
against, and hold each Indemnitee harmless from, any and all losses, claims,
damages, liabilities and related reasonable expenses, including the fees,
charges and disbursements of any counsel for any Indemnitee, incurred by or
asserted against any Indemnitee arising out of, in connection with, or as a
result of (i) the execution or delivery of this Agreement, the Security
Documents and the other Loan Documents or any agreement or instrument
contemplated hereby, the performance by the parties hereto of their respective
obligations hereunder or the consummation of the Transactions or any other
transactions contemplated hereby, (ii) any Loan or Letter of Credit or the use
of the proceeds therefrom (including any refusal by the Issuing Bank to honor a
demand for payment under a Letter of Credit if the documents presented in
connection with such demand do not strictly comply with the terms of such Letter
of Credit), (iii) any actual or alleged presence or release of Hazardous
Materials on or from any property owned or operated by the Borrower or any of
its Subsidiaries, or any Environmental Liability related in any way to the
Borrower or any of its Subsidiaries, or (iv) any actual or prospective claim,
litigation, investigation or proceeding relating to any of the foregoing,
whether based on contract, tort or any other theory and regardless of whether
any Indemnitee is a party thereto; PROVIDED THAT IT IS THE EXPRESS INTENTION OF
THE PARTIES HERETO THAT SUCH INDEMNITY SHALL BE APPLICABLE REGARDLESS OF WHETHER
ANY LOSS OR LIABILITY WAS CAUSED BY ANY INDEMNITEE'S OWN NEGLIGENCE OR ARISES
FROM ANY

                                      -63-

<PAGE>   68



THEORY OF STRICT LIABILITY BUT SHALL NOT, AS TO ANY INDEMNITEE, BE AVAILABLE TO
THE EXTENT THAT SUCH LOSSES, CLAIMS, DAMAGES, LIABILITIES OR RELATED EXPENSES
ARE DETERMINED TO HAVE RESULTED FROM THE GROSS NEGLIGENCE OR WILFUL MISCONDUCT
OF SUCH INDEMNITEE.

                  (c) To the extent that the Borrower fails to pay any amount
required to be paid by it to the Administrative Agent, the Issuing Bank under
paragraph (a) or (b) of this Section, each Lender severally agrees to pay to the
Administrative Agent or the Issuing Bank, as the case may be, such Lender's
Applicable Percentage (determined as of the time that the applicable
unreimbursed expense or indemnity payment is sought) of such unpaid amount;
provided that the unreimbursed expense or indemnified loss, claim, damage,
liability or related expense, as the case may be, was incurred by or asserted
against the Administrative Agent or the Issuing Bank in its capacity as such.

                  (d) To the extent permitted by applicable law, the Borrower
shall not assert, and hereby waives, any claim against any Indemnitee, on any
theory of liability, for special, indirect, consequential or punitive damages
(as opposed to direct or actual damages) arising out of, in connection with, or
as a result of, this Agreement or any agreement or instrument contemplated
hereby, the Transactions, any Loan or Letter of Credit or the use of the
proceeds thereof.

                  (e) All amounts due under this Section shall be payable not
later than fifteen (15) days after written demand therefor.

                  SECTION 9.04. Successors and Assigns. (a) The provisions of
this Agreement shall be binding upon and inure to the benefit of the parties
hereto and their respective successors and assigns permitted hereby (including
any Affiliate of the Issuing Bank that issues any Letter of Credit), except that
the Borrower may not assign or otherwise transfer any of its rights or
obligations hereunder without the prior written consent of each Lender (and any
attempted assignment or transfer by the Borrower without such consent shall be
null and void). Nothing in this Agreement, expressed or implied, shall be
construed to confer upon any Person (other than the parties hereto, their
respective successors and assigns permitted hereby (including any Affiliate of
the Issuing Bank that issues any Letter of Credit) and, to the extent expressly
contemplated hereby, the Related Parties of each of the Administrative Agent,
the Issuing Bank and the Lenders) any legal or equitable right, remedy or claim
under or by reason of this Agreement.

                  (b) Any Lender may assign to one or more assignees all or a
portion of its rights and obligations under this Agreement (including all or a
portion of its Commitment and the Loans at the time owing to it); provided that
(i) except in the case of an assignment to a Lender or an Affiliate of a Lender,
each of the Borrower and the Administrative Agent (and, in the case of an
assignment of all or a portion of a Commitment or any Lender's obligations in
respect of its LC Exposure, the Issuing Bank) must give their prior written
consent to such assignment (which consent shall not be unreasonably withheld),
(ii) except in the case of an assignment to a Lender or an Affiliate of a Lender
or an assignment of the entire remaining amount of the assigning Lender's


                                      -64-

<PAGE>   69



Commitment, the amount of the Commitment of the assigning Lender subject to each
such assignment (determined as of the date the Assignment and Acceptance with
respect to such assignment is delivered to the Administrative Agent) shall not
be less than $5,000,000 unless each of the Borrower and the Administrative Agent
otherwise consent, (iii) each partial assignment shall be made as an assignment
of a proportionate part of all the assigning Lender's rights and obligations
under this Agreement, (iv) the parties to each assignment shall execute and
deliver to the Administrative Agent an Assignment and Acceptance, together with
a processing and recordation fee of $3,500, and (v) the assignee, if it shall
not be a Lender, shall deliver to the Administrative Agent an Administrative
Questionnaire; and provided further that any consent of the Borrower otherwise
required under this paragraph shall not be required if an Event of Default under
clause (h) or (i) of Article VII has occurred and is continuing. Subject to
acceptance and recording thereof pursuant to paragraph (d) of this Section, from
and after the effective date specified in each Assignment and Acceptance the
assignee thereunder shall be a party hereto and, to the extent of the interest
assigned by such Assignment and Acceptance, have the rights and obligations of a
Lender under this Agreement, and the assigning Lender thereunder shall, to the
extent of the interest assigned by such Assignment and Acceptance, be released
from its obligations under this Agreement (and, in the case of an Assignment and
Acceptance covering all of the assigning Lender's rights and obligations under
this Agreement, such Lender shall cease to be a party hereto but shall continue
to be entitled to the benefits of Sections 2.13, 2.14, 2.15 and 9.03).

                  (c) The Administrative Agent, acting for this purpose as an
agent of the Borrower, shall maintain at one of its offices in Houston, Texas a
copy of each Assignment and Acceptance delivered to it and a register for the
recordation of the names and addresses of the Lenders, and the Commitment of,
and principal amount of the Loans and LC Disbursements owing to, each Lender
pursuant to the terms hereof from time to time (the "Register"). The entries in
the Register shall be prima facie evidence of the correctness thereof, and the
Borrower, the Administrative Agent, the Issuing Bank and the Lenders may treat
each Person whose name is recorded in the Register pursuant to the terms hereof
as a Lender hereunder for all purposes of this Agreement, notwithstanding notice
to the contrary. The Register shall be available for inspection by the Borrower,
the Issuing Bank and any Lender, at any reasonable time and from time to time
upon reasonable prior notice.

                  (d) Upon its receipt of a duly completed Assignment and
Acceptance executed by an assigning Lender and an assignee, the assignee's
completed Administrative Questionnaire (unless the assignee shall already be a
Lender hereunder), the processing and recordation fee referred to in paragraph
(b) of this Section and any written consent to such assignment required by
paragraph (b) of this Section, the Administrative Agent shall accept such
Assignment and Acceptance and record the information contained therein in the
Register. No assignment shall be effective for purposes of this Agreement unless
it has been recorded in the Register as provided in this paragraph.

                  (e) Any Lender may, without the consent of the Borrower, the
Administrative Agent, the Issuing Bank, sell participations to one or more banks
or other entities (a "Participant") in all or a portion of such Lender's rights
and obligations under this Agreement (including all or a

                                      -65-

<PAGE>   70



portion of its Commitment and the Loans owing to it); provided that (i) such
Lender's obligations under this Agreement shall remain unchanged, (ii) such
Lender shall remain solely responsible to the other parties hereto for the
performance of such obligations and (iii) the Borrower, the Administrative
Agent, the Issuing Bank and the other Lenders shall continue to deal solely and
directly with such Lender in connection with such Lender's rights and
obligations under this Agreement. Any agreement or instrument pursuant to which
a Lender sells such a participation shall provide that such Lender shall retain
the sole right to enforce this Agreement and to approve any amendment,
modification or waiver of any provision of this Agreement; provided that such
agreement or instrument may provide that such Lender will not, without the
consent of the Participant, agree to any amendment, modification or waiver
described in the first proviso to Section 9.02(b) that affects such Participant.
Subject to paragraph (f) of this Section, the Borrower agrees that each
Participant shall be entitled to the benefits of Sections 2.13, 2.14 and 2.15 to
the same extent as if it were a Lender and had acquired its interest by
assignment pursuant to paragraph (b) of this Section. To the extent permitted by
law, each Participant also shall be entitled to the benefits of Section 9.08 as
though it were a Lender, provided such Participant agrees to be subject to
Section 2.16(c) as though it were a Lender.

                  (f) A Participant shall not be entitled to receive any greater
payment under Section 2.13, 2.14 or 2.15 than the applicable Lender would have
been entitled to receive with respect to the participation sold to such
Participant, unless the sale of the participation to such Participant is made
with the Borrower's prior written consent. A Participant that would be a Foreign
Lender if it were a Lender shall not be entitled to the benefits of Section 2.15
unless the Borrower is notified of the participation sold to such Participant
and such Participant agrees, for the benefit of the Borrower, to comply with
Section 2.15(e) as though it were a Lender.

                  (g) Any Lender may at any time pledge or assign a security
interest in all or any portion of its rights under this Agreement to secure
obligations of such Lender, including any pledge or assignment to secure
obligations to a Federal Reserve Bank, and this Section shall not apply to any
such pledge or assignment of a security interest; provided that no such pledge
or assignment of a security interest shall release a Lender from any of its
obligations hereunder or substitute any such pledgee or assignee for such Lender
as a party hereto.

                  SECTION 9.05. Survival. All covenants, agreements,
representations and warranties made by the Borrower herein and in the
certificates or other instruments delivered in connection with or pursuant to
this Agreement shall be considered to have been relied upon by the other parties
hereto and shall survive the execution and delivery of this Agreement and the
making of any Loans and issuance of any Letters of Credit, regardless of any
investigation made by any such other party or on its behalf and notwithstanding
that the Administrative Agent, the Issuing Bank or any Lender may have had
notice or knowledge of any Default or incorrect representation or warranty at
the time any credit is extended hereunder, and shall continue in full force and
effect as long as the principal of or any accrued interest on any Loan or any
fee or any other amount payable under this Agreement is outstanding and unpaid
or any Letter of Credit is outstanding and so long as the Commitments have not
expired or terminated. The provisions of Sections 2.13, 2.14, 2.15 and 9.03 and


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<PAGE>   71



Article VIII shall survive and remain in full force and effect regardless of the
consummation of the transactions contemplated hereby, the repayment of the
Loans, the expiration or termination of the Letters of Credit and the
Commitments or the termination of this Agreement or any provision hereof.

                  SECTION 9.06. Counterparts; Integration; Effectiveness. This
Agreement may be executed in counterparts (and by different parties hereto on
different counterparts), each of which shall constitute an original, but all of
which when taken together shall constitute a single contract. This Agreement and
any separate letter agreements with respect to fees payable to the
Administrative Agent constitute the entire contract among the parties relating
to the subject matter hereof and supersede any and all previous agreements and
understandings, oral or written, relating to the subject matter hereof. Except
as provided in Section 4.01, this Agreement shall become effective when it shall
have been executed by the Administrative Agent and when the Administrative Agent
shall have received counterparts hereof which, when taken together, bear the
signatures of each of the other parties hereto, and thereafter shall be binding
upon and inure to the benefit of the parties hereto and their respective
successors and assigns. Delivery of an executed counterpart of a signature page
of this Agreement by telecopy shall be effective as delivery of a manually
executed counterpart of this Agreement.

                  SECTION 9.07. Severability. Any provision of this Agreement
held to be invalid, illegal or unenforceable in any jurisdiction shall, as to
such jurisdiction, be ineffective to the extent of such invalidity, illegality
or unenforceability without affecting the validity, legality and enforceability
of the remaining provisions hereof; and the invalidity of a particular provision
in a particular jurisdiction shall not invalidate such provision in any other
jurisdiction.

                  SECTION 9.08. Right of Setoff. Without limiting the remedies
provided for in Article VIII hereof, if an Event of Default shall have occurred
and be continuing and after acceleration of the Obligations, each Lender is
hereby authorized at any time and from time to time, to the fullest extent
permitted by law, to set off and apply any and all deposits (general or special,
time or demand, provisional or final) at any time held and other obligations at
any time owing by such Lender to or for the credit or the account of the
Borrower or any Guarantor against any of and all the obligations of the Borrower
now or hereafter existing under this Agreement held by such Lender, irrespective
of whether or not such Lender shall have made any demand under this Agreement,
its Notes or the Obligations and although Obligations may be unmatured. The
rights of each Lender under this Section are in addition to other rights and
remedies (including other rights of setoff) which such Lender may have.

                  SECTION 9.09. Governing Law; Jurisdiction; Consent to Service
of Process. (a) THIS AGREEMENT, ALL NOTES, THE OTHER LOAN DOCUMENTS AND ALL
OTHER DOCUMENTS EXECUTED IN CONNECTION HEREWITH SHALL BE DEEMED TO BE CONTRACTS
AND AGREEMENTS UNDER THE LAWS OF THE STATE OF TEXAS AND OF THE UNITED STATES OF
AMERICA AND FOR ALL PURPOSES SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED
BY, THE LAWS OF TEXAS AND OF THE UNITED STATES. Without limitation of the
foregoing, nothing in this Agreement, or in the Notes or in any other Loan
Document shall be deemed to constitute a waiver of any rights which any Lender
may have under

                                      -67-

<PAGE>   72



applicable federal legislation relating to the amount of interest which such
Lender may contract for, take, receive or charge in respect of the Loan and the
Loan Documents, including any right to take, receive, reserve and charge
interest at the rate allowed by the law of the state where any Lender is
located. The Administrative Agent, each Lender and the Borrower further agree
that insofar as the provisions of the Texas Finance Code, Chapter 303, as
amended, are applicable to the determination of the Highest Lawful Rate with
respect to the Notes and the Obligations hereunder and under the other Loan
Documents, the indicated rate ceiling of such Code shall be applicable;
provided, however, that to the extent permitted by such Code, the Administrative
Agent may from time to time by notice to the Borrower revise the election of
such interest rate ceiling as such ceiling affects the then current or future
balances of the Loans. The provisions of the Texas Finance Code, Chapter 346, do
not apply to this Agreement, any Note issued hereunder or the other Loan
Documents.

                  (b) THE BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY
SUBMITS, FOR ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE JURISDICTION OF THE
DISTRICT COURTS OF HARRIS COUNTY, TEXAS AND OF THE UNITED STATES DISTRICT COURT
OF THE SOUTHERN DISTRICT OF TEXAS, SITTING IN HOUSTON, TEXAS AND ANY APPELLATE
COURT FROM ANY THEREOF, IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING
TO THIS AGREEMENT, OR FOR RECOGNITION OR ENFORCEMENT OF ANY JUDGMENT, AND EACH
OF THE PARTIES HERETO HEREBY IRREVOCABLY AND UNCONDITIONALLY AGREES THAT ALL
CLAIMS IN RESPECT OF ANY SUCH ACTION OR PROCEEDING MAY BE HEARD AND DETERMINED
IN SUCH STATE OR, TO THE EXTENT PERMITTED BY LAW, IN SUCH FEDERAL COURT. EACH OF
THE PARTIES HERETO AGREES THAT A FINAL JUDGMENT IN ANY SUCH ACTION OR PROCEEDING
SHALL BE CONCLUSIVE AND MAY BE ENFORCED IN OTHER JURISDICTIONS BY SUIT ON THE
JUDGMENT OR IN ANY OTHER MANNER PROVIDED BY LAW. NOTHING IN THIS AGREEMENT SHALL
AFFECT ANY RIGHT THAT THE ADMINISTRATIVE AGENT, THE ISSUING BANK OR ANY LENDER
MAY OTHERWISE HAVE TO BRING ANY ACTION OR PROCEEDING RELATING TO THIS AGREEMENT
AGAINST THE BORROWER OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION.

                  (c) THE BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY
WAIVES, TO THE FULLEST EXTENT IT MAY LEGALLY AND EFFECTIVELY DO SO, ANY
OBJECTION WHICH IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUIT,
ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT IN ANY COURT
REFERRED TO IN PARAGRAPH (b) OF THIS SECTION. EACH OF THE PARTIES HERETO HEREBY
IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, THE DEFENSE OF AN
INCONVENIENT FORUM TO THE MAINTENANCE OF SUCH ACTION OR PROCEEDING IN ANY SUCH
COURT.

                  (d) EACH PARTY TO THIS AGREEMENT IRREVOCABLY CONSENTS TO
SERVICE OF PROCESS IN THE MANNER PROVIDED FOR NOTICES IN SECTION 9.01. NOTHING
IN THIS AGREEMENT WILL AFFECT THE RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE
PROCESS IN ANY OTHER MANNER PERMITTED BY LAW.

                  SECTION 9.10. WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE
TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF
OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER
BASED ON CONTRACT, TORT

                                      -68-

<PAGE>   73



OR ANY OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE,
AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE,
THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE
FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE
BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL
WAIVERS AND CERTIFICATIONS IN THIS SECTION.

                  SECTION 9.11. Headings. Article and Section headings and the
Table of Contents used herein are for convenience of reference only, are not
part of this Agreement and shall not affect the construction of, or be taken
into consideration in interpreting, this Agreement.

                  SECTION 9.12. Confidentiality. Each of the Administrative
Agent, the Issuing Bank and the Lenders agrees to maintain the confidentiality
of the Information (as defined below), except that Information may be disclosed
(a) to its and its Affiliates' directors, officers, employees and agents,
including accountants, legal counsel and other advisors (it being understood
that the Persons to whom such disclosure is made will be informed of the
confidential nature of such Information and instructed to keep such Information
confidential) to be used solely in connection with the administration of the
Loan Documents, (b) to the extent requested by any regulatory authority, (c) to
the extent required by applicable laws or regulations or by any subpoena or
similar legal process, (d) to any other party to this Agreement, (e) in
connection with the exercise of any remedies hereunder or any suit, action or
proceeding relating to this Agreement or the enforcement of rights hereunder,
(f) subject to an agreement containing provisions substantially the same as
those of this Section, to any assignee of or Participant in, or any prospective
assignee of or Participant in, any of its rights or obligations under this
Agreement, (g) with the consent of the Borrower or (h) to the extent such
Information (i) becomes publicly available other than as a result of a breach of
this Section or (ii) becomes available to the Administrative Agent, the Issuing
Bank or any Lender on a nonconfidential basis from a source other than the
Borrower. For the purposes of this Section, "Information" means all information
received from the Borrower relating to the Borrower or its business, other than
any such information that is available to the Administrative Agent, the Issuing
Bank or any Lender on a nonconfidential basis prior to disclosure by the
Borrower; provided that, in the case of information received from the Borrower
after the date hereof, such information is clearly identified at the time of
delivery as confidential. Any Person required to maintain the confidentiality of
Information as provided in this Section shall be considered to have complied
with its obligation to do so if such Person has exercised the same degree of
care to maintain the confidentiality of such Information as such Person would
accord to its own confidential information.

                  SECTION 9.13. Interest Rate Limitation. Each provision in this
Agreement and each other Loan Document is expressly limited so that in no event
whatsoever shall the amount paid, or otherwise agreed to be paid, to the
Administrative Agent or any Lender, or charged, contracted for, reserved, taken
or received by the Administrative Agent or any Lender, for the use, forbearance
or detention of the money to be loaned under this Agreement or any Loan Document
or otherwise (including any sums paid as required by any covenant or obligation
contained herein or in any other

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<PAGE>   74



Loan Document which is for the use, forbearance or detention of such money),
exceed that amount of money which would cause the effective rate of interest to
exceed the Highest Lawful Rate, and all amounts owed under this Agreement and
each other Loan Document shall be held to be subject to reduction to the effect
that such amounts so paid or agreed to be paid, charged, contracted for,
reserved, taken or received which are for the use, forbearance or detention of
money under this Agreement or such Loan Document shall in no event exceed that
amount of money which would cause the effective rate of interest to exceed the
Highest Lawful Rate. Anything in any Note or any other Loan Document to the
contrary notwithstanding, the Borrower shall not be required to pay unearned
interest on any Note and the Borrower shall not be required to pay interest on
the Obligations at a rate in excess of the Highest Lawful Rate, and if the
effective rate of interest which would otherwise be payable under such Note and
such Loan Documents would exceed the Highest Lawful Rate, or if the holder of
such Note shall receive any unearned interest or shall receive monies that are
deemed to constitute interest which would increase the effective rate of
interest payable by the Borrower under such Note and the other Loan Documents to
a rate in excess of the Highest Lawful Rate, then (a) the amount of interest
which would otherwise be payable by the Borrower shall be reduced to the amount
allowed under applicable law and (b) any unearned interest paid by the Borrower
or any interest paid by the Borrower in excess of the Highest Lawful Rate shall
in the first instance be credited on the principal of the Obligations of the
Borrower (or if all such Obligations shall have been paid in full, refunded to
the Borrower). It is further agreed that, without limitation of the foregoing,
all calculations of the rate of interest contracted for, reserved, taken,
charged or received by any Lender under the Notes and the Obligations and under
the other Loan Documents are made for the purpose of determining whether such
rate exceeds the Highest Lawful Rate, and shall be made, to the extent permitted
by usury laws applicable to such Lender, by amortizing, prorating and spreading
in equal parts during the period of the full stated term of the Notes and this
Agreement and all interest at any time contracted for, charged or received by
such Lender in connection therewith.

                  SECTION 9.14. FINAL AGREEMENT OF THE PARTIES. THIS AGREEMENT
(INCLUDING THE SCHEDULES AND EXHIBITS HERETO), THE NOTES, THE GUARANTY IN
ARTICLE X HEREOF, AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT
BETWEEN THE PARTIES RELATING TO THE SUBJECT MATTER HEREOF AND THEREOF AND MAY
NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE
PARTIES.

                  SECTION 9.15. Limited Liability. No director, officer,
employee, incorporator or stockholder of the Borrower or any Subsidiary, as
such, shall have any liability for any obligations of the Borrower under the
Notes, the Guarantors under the Guaranty or the Loan Documents or for any claim
based on, in respect of, or by reason of, such obligations or their creation.
Each Lender waives and releases all such liability. The waiver and release are
part of the consideration for Transactions.



                                      -70-

<PAGE>   75


                                    ARTICLE X

                                    Guaranty

                  SECTION 10.01. Guaranty. In consideration of, and in order to
induce the Lenders to make the Loans hereunder, each Guarantor hereby
absolutely, unconditionally and irrevocably, jointly and severally guarantees
the punctual payment and performance when due, whether at stated maturity, by
acceleration or otherwise, of the Obligations, and all other obligations and
covenants of the Borrower now or hereafter existing under this Agreement, the
Notes and the other Loan Documents whether for principal, interest (including
interest accruing or becoming owing both prior to and subsequent to the
commencement of any proceeding against or with respect to the Borrower under any
chapter of the Bankruptcy Code), Fees, commissions, expenses (including
reasonable attorneys' fees and expenses) or otherwise, and all reasonable costs
and expenses, if any, incurred by the Administrative Agent or any Lender in
connection with enforcing any rights under this Guaranty (all such obligations
being the "Guaranteed Obligations"), and agrees to pay any and all reasonable
expenses incurred by each Lender and the Administrative Agent in enforcing this
Guaranty; provided that notwithstanding anything contained herein or in any of
the Loan Documents to the contrary, the maximum liability of each Guarantor
hereunder and under the other Loan Documents shall in no event exceed such
Guarantor's Maximum Guaranteed Amount, and provided further, each Guarantor
shall be unconditionally required to pay all amounts demanded of it hereunder
prior to any determination of such Maximum Guaranteed Amount and the recipient
of such payment, if so required by a final non-appealable order of a court of
competent jurisdiction, shall then be liable for the refund of any excess
amounts. If any such rebate or refund is ever required, all other Guarantors
(and the Borrower) shall be fully liable for the repayment thereof to the
maximum extent allowed by applicable law. This Guaranty is an absolute,
unconditional, present and continuing guaranty of payment and not of
collectibility and is in no way conditioned upon any attempt to collect from the
Borrower or any other action, occurrence or circumstance whatsoever. Each
Guarantor agrees that the Guaranteed Obligations may at any time and from time
to time exceed the Maximum Guaranteed Amount of such Guarantor without impairing
this Guaranty or affecting the rights and remedies of the Lenders hereunder.

                  SECTION 10.02. Continuing Guaranty. Each Guarantor guarantees
that the Guaranteed Obligations will be paid strictly in accordance with the
terms of this Agreement, the Notes and the other Loan Documents. Each Guarantor
agrees that the Guaranteed Obligations and Loan Documents may be extended or
renewed, and Loans repaid and reborrowed in whole or in part, without notice to
or assent by such Guarantor, and that it will remain bound upon this Guaranty
notwithstanding any extension, renewal or other alteration of any Guaranteed
Obligations or Loan Documents, or any repayment and reborrowing of Loans. To the
maximum extent permitted by applicable law, the obligations of each Guarantor
under this Guaranty shall be absolute, unconditional and irrevocable, and shall
be performed strictly in accordance with the terms hereof under any
circumstances whatsoever, including:


                                      -71-

<PAGE>   76



                  (a) any extension, renewal, modification, settlement,
compromise, waiver or release in respect of any Guaranteed Obligations;

                  (b) any extension, renewal, amendment, modification,
rescission, waiver or release in respect of any Loan Documents;

                  (c) any release, exchange, substitution, non-perfection or
invalidity of, or failure to exercise rights or remedies with respect to, any
direct or indirect security for any Guaranteed Obligations, including the
release of any Guarantor or other Person liable on any Guaranteed Obligations;

                  (d) any change in the corporate existence, structure or
ownership of the Borrower, any Guarantor, or any insolvency, bankruptcy,
reorganization or other similar proceeding affecting the Borrower, such
Guarantor, any other Guarantor or any of their respective assets;

                  (e) the existence of any claim, defense, set-off or other
rights or remedies which such Guarantor at any time may have against the
Borrower, or the Borrower or such Guarantor may have at any time against the
Administrative Agent, any Lender, any other Guarantor or any other Person,
whether in connection with this Guaranty, the Loan Documents, the transactions
contemplated thereby or any other transaction other than by the payment in full
by the Borrower of the Guaranteed Obligations after the termination of the
Commitments of the Lenders;

                  (f) any invalidity or unenforceability for any reason of this
Agreement or other Loan Documents, or any provision of law purporting to
prohibit the payment or performance by the Borrower, such Guarantor or any other
Guarantor of the Guaranteed Obligations or Loan Documents, or of any other
obligation to the Administrative Agent or any Lender; or

                  (g) any other circumstances or happening whatsoever, whether
or not similar to any of the foregoing.

                  SECTION 10.03. Effect of Debtor Relief Laws. If after receipt
of any payment of, or proceeds of any security applied (or intended to be
applied) to the payment of all or any part of the Guaranteed Obligations, the
Administrative Agent or any Lender is for any reason compelled to surrender or
voluntarily surrenders (under circumstances in which it believes it could
reasonably be expected to be so compelled if it did not voluntarily surrender),
such payment or proceeds to any Person (a) because such payment or application
of proceeds is or may be avoided, invalidated, declared fraudulent, set aside,
determined to be void or voidable as a preference, fraudulent conveyance,
fraudulent transfer, impermissible set-off or a diversion of trust funds or (b)
for any other similar reason, including (i) any judgment, decree or order of any
court or administrative body having jurisdiction over the Administrative Agent,
any Lender or any of their respective properties or (ii) any settlement or
compromise of any such claim effected by the Administrative Agent or any Lender
with any such claimant (including the Borrower), then the Guaranteed Obligations
or part thereof intended to be satisfied shall be reinstated and continue, and
this Guaranty shall continue in

                                      -72-

<PAGE>   77

full force as if such payment or proceeds have not been received,
notwithstanding any revocation thereof or the cancellation of any Note or any
other instrument evidencing any Guaranteed Obligations or otherwise; and the
Guarantors, jointly and severally, shall be liable to pay the Administrative
Agent and the Lenders, and hereby do indemnify the Administrative Agent and the
Lenders and hold them harmless for the amount of such payment or proceeds so
surrendered and all expenses (including reasonable attorneys' fees, court costs
and expenses attributable thereto) incurred by the Administrative Agent or any
Lender in the defense of any claim made against it that any payment or proceeds
received by the Administrative Agent or any Lender in respect of all or part of
the Guaranteed Obligations must be surrendered. The provisions of this paragraph
shall survive the termination of this Guaranty, and any satisfaction and
discharge of the Borrower by virtue of any payment, court order or any federal
or state law.

                  SECTION 10.04. Partial Waiver of Subrogation. Notwithstanding
any payment or payments made by any Guarantor hereunder, or any set-off or
application by the Administrative Agent or any Lender of any security or of any
credits or claims, no Guarantor will assert or exercise any rights of the
Administrative Agent or any Lender or of such Guarantor against the Borrower to
recover the amount of any payment made by such Guarantor to the Administrative
Agent or any Lender hereunder by way of any claim, remedy or subrogation,
reimbursement, exoneration, contribution, indemnity, participation or otherwise
arising by contract, by statute, under common law or otherwise, and such
Guarantor shall not have any right to exercise any right of recourse to or any
claim against assets or property of the Borrower, in each case unless and until
the Obligations of the Borrower guaranteed hereby have been fully and finally
satisfied. Until such time (but not thereafter), each Guarantor hereby expressly
waives any right to exercise any claim, right or remedy which such Guarantor may
now have or hereafter acquire against the Borrower that arises under this
Agreement or any other Loan Document or from the performance by any Guarantor of
the Guaranty hereunder including any claim, remedy or right of subrogation,
reimbursement, exoneration, contribution, indemnification or participation in
any claim, right or remedy of the Administrative Agent or any Lender against the
Borrower or any Guarantor, or any security that the Administrative Agent or any
Lender now has or hereafter acquires, whether or not such claim, right or remedy
arises in equity, under contract, by statute, under common law or otherwise. If
any amount shall be paid to a Guarantor by the Borrower or another Guarantor
after payment in full of the Obligations, and the Obligations shall thereafter
be reinstated in whole or in part and the Administrative Agent or any Lender
forced to repay any sums received by any of them in payment of the Obligations,
this Guaranty shall be automatically reinstated and such amount shall be held in
trust for the benefit of the Administrative Agent and the Lenders and shall
forthwith be paid to the Administrative Agent to be credited and applied to the
Guaranteed Obligations, whether matured or unmatured. The provisions of this
paragraph shall survive the termination of this Guaranty, and any satisfaction
and discharge of the Borrower by virtue of any payment, court order or any
federal or state law.

                  SECTION 10.05. Subordination. If any Guarantor becomes the
holder of any indebtedness payable by the Borrower or another Guarantor, each
Guarantor hereby subordinates all indebtedness owing to it from the Borrower or
such other Guarantor to all indebtedness of the Borrower to the Administrative
Agent and the Lenders, and agrees that during the continuance of

                                      -73-

<PAGE>   78



any Event of Default it shall not accept any payment on the same until payment
in full of the Obligations of the Borrower under this Agreement and the other
Loan Documents after the termination of the Commitments of the Lenders and shall
in no circumstance whatsoever attempt to set-off or reduce any obligations
hereunder because of such indebtedness. If any amount shall nevertheless be paid
in violation of the foregoing to a Guarantor by the Borrower or another
Guarantor prior to payment in full of the Guaranteed Obligations, such amount
shall be held in trust for the benefit of the Administrative Agent and the
Lenders and shall forthwith be paid to the Administrative Agent to be credited
and applied to the Guaranteed Obligations, whether matured or unmatured.

                  SECTION 10.06. Waiver. To the extent permitted by applicable
law, each Guarantor hereby waives promptness, diligence, notice of acceptance
and any other notice with respect to any of the Guaranteed Obligations and this
Guaranty and waives presentment, demand of payment, notice of intent to
accelerate, notice of dishonor or nonpayment and any requirement that the
Administrative Agent or any Lender institute suit, collection proceedings or
take any other action to collect the Guaranteed Obligations, including any
requirement that the Administrative Agent or any Lender protect, secure, perfect
or insure any Lien against any property subject thereto or exhaust any right or
take any action against the Borrower or any other Person or any collateral (it
being the intention of the Administrative Agent, the Lenders and each Guarantor
that this Guaranty is to be a guaranty of payment and not of collection). It
shall not be necessary for the Administrative Agent or any Lender, in order to
enforce any payment by any Guarantor hereunder, to institute suit or exhaust its
rights and remedies against the Borrower, any other Guarantor or any other
Person, including others liable to pay any Guaranteed Obligations, or to enforce
its rights against any security ever given to secure payment thereof. Each
Guarantor hereby expressly waives to the maximum extent permitted by applicable
law each and every right to which it may be entitled by virtue of the suretyship
laws of the State of Texas, including any and all rights it may have pursuant to
Rule 31, Texas Rules of Civil Procedure, Section 17.001 of the Texas Civil
Practice and Remedies Code and Chapter 34 of the Texas Business and Commerce
Code. Each Guarantor hereby waives marshaling of assets and liabilities, notice
by the Administrative Agent or any Lender of any indebtedness or liability to
which such Lender applies or may apply any amounts received by such Lender, and
of the creation, advancement, increase, existence, extension, renewal,
rearrangement or modification of the Guaranteed Obligations. Each Guarantor
expressly waives, to the extent permitted by applicable law, the benefit of any
and all laws providing for exemption of property from execution or for valuation
and appraisal upon foreclosure.

                  SECTION 10.07. Full Force and Effect. This Guaranty is a
continuing guaranty and shall remain in full force and effect until all of the
Obligations of the Borrower under this Agreement and the other Loan Documents
and all other amounts payable under this Guaranty have been paid in full (after
the termination of the Commitments of the Lenders). All rights, remedies and
powers provided in this Guaranty may be exercised, and all waivers contained in
this Guaranty may be enforced, only to the extent that the exercise or
enforcement thereof does not violate any provisions of applicable law which may
not be waived.






                                      -74-

<PAGE>   79

                  SECTION 10.08. Termination of Guaranty. Upon the sale or other
disposition (by merger or otherwise) of a Guarantor (or all or substantially all
of its property and assets) to a Person other than the Borrower or another
Guarantor and pursuant to a transaction that is otherwise in compliance with
this Agreement, such Guarantor (unless it otherwise remains a Subsidiary) shall
be deemed released from its Guaranty and the related Obligations set forth in
this Agreement; provided no Default or Event of Default shall have occurred and
be continuing and provided further that any such termination shall occur only to
the extent that all Obligations of such Guarantor under all of its guarantees of
and under all of its pledges of assets or other security interests which secure,
other Indebtedness of the Company shall also terminate or be released upon such
sale or other disposition.

                                      -75-
<PAGE>   80


                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed by their respective authorized officers as of the
day and year first above written.


                                         BORROWER:

                                         U.S. CONCRETE, INC., a Delaware
                                         corporation


                                         By
                                           -------------------------------------
                                         Name:  Michael W. Harlan
                                         Title: Senior Vice President



                                         GUARANTORS:

                                         Baer Concrete, Incorporated , a New
                                             Jersey corporation
                                         Bay Cities Building Materials Co.,
                                             Inc., a California corporation
                                         B.C.B.M. Transport, Inc., a California
                                             corporation
                                         Central Concrete Supply Co., Inc., a
                                             California corporation
                                         Opportunity Concrete Corporation , a
                                             District of Columbia corporation
                                         R.G. Evans/Associates
                                             d/b/a/ Santa Rosa Cast Products
                                             Co., a California corporation
                                         Walker's Concrete, Inc., a California
                                             corporation


                                         By
                                           -------------------------------------
                                         Name:  Eugene P. Martineau
                                         Title: Senior Vice President



<PAGE>   81


<TABLE>

<S>                                          <C>
                                         ADMINISTRATIVE AGENT/LENDER:

                                             CHASE BANK OF TEXAS,
                                             NATIONAL ASSOCIATION


                                             By:
                                                --------------------------------
                                             Name: Michael E. Ondruch
                                             Title: Vice President


                                         ADDRESS FOR NOTICE:

                                             Chase Bank of Texas, National Association
                                             712 Main Street
                                             5 CCB East-MS 78
                                             Houston, Texas 77008

                                             Telephone: (713) 216-5324
                                             Telecopy: (713) 216-6004

                                             Attn.: Michael Ondruch
</TABLE>



<PAGE>   82




                                         SYNDICATION AGENT/LENDER:

                                             NATIONSBANK, N.A.
                                             (D/B/A BANK OF AMERICA, N.A.)



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


                                         ADDRESS FOR NOTICE:

                                             NATIONSBANK, N.A.
                                             (D/B/A BANK OF AMERICA, N.A.)
                                             700 Louisiana, 7th Floor
                                             Houston, Texas 77002

                                             Telephone: (713) 247-7756
                                             Telecopy: (713) 247-7748

                                             Attn: William Borus




<PAGE>   83




                                         CO-AGENT/LENDER:

                                             BANK ONE TEXAS, NA



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


                                         ADDRESS FOR NOTICE:

                                             BANK ONE, TEXAS, NA
                                             910 Travis Street, 7th Floor
                                             Houston, Texas   77002

                                             Telephone: (713) 751-3806
                                             Telecopy: (713) 751-6199

                                             Attn: John Elam



<PAGE>   84




                                         CO-AGENT/LENDER:

                                             CREDIT LYONNAIS
                                             NEW YORK BRANCH


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



                                         ADDRESS FOR NOTICE:

                                             CREDIT LYONNAIS
                                             NEW YORK BRANCH
                                             2200 Ross Avenue, Suite 4400W
                                             Dallas, Texas 75201

                                             Telephone: (214) 220-2303
                                             Telecopy: (214) 220-2323

                                             Attn: Blake Wright



<PAGE>   85




                                         LENDER:

                                             THE BANK OF NOVA SCOTIA


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

                                             ADDRESS FOR NOTICE:

                                             THE BANK OF NOVA SCOTIA
                                             1100 Louisiana, Suite 3000
                                             Houston, Texas 77002


                                             Telephone: (713) 759-3448
                                             Telecopy: (713) 752-2425

                                             Attn.: Tracy Nguyen


<PAGE>   86




                                         LENDER:

                                             BRANCH BANKING & TRUST COMPANY



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


                                             ADDRESS FOR NOTICE:

                                             BRANCH BANKING & TRUST COMPANY
                                             110 South Stratford Rd., Suite 301
                                             Winston Salem, NC 27104

                                             Telephone: (336) 733-3259
                                             Telecopy:  (336) 733-3254

                                             Attn: Cory Boyte


<PAGE>   87




                                         LENDER:

                                             COMERICA BANK



                                             By:
                                                --------------------------------
                                                 Mark B. Grover
                                                 Vice President


                                             ADDRESS FOR NOTICE:

                                             COMERICA BANK
                                             4100 Spring Valley, Suite 900
                                             Dallas, Texas  75244

                                             Telephone: (972) 361-2545
                                             Telecopy:  (972) 361-2550

                                             Attn: Mark B. Grover




<PAGE>   88








                                                                       EXHIBIT A










                                    [FORM OF]

                            ASSIGNMENT AND ACCEPTANCE


                  Reference is made to the Credit Agreement dated as of [      ]
(as amended and in effect on the date hereof, the "Credit Agreement"), among
[              ], the Lenders named therein and Chase Bank of Texas, N.A., as
Administrative Agent for the Lenders. Terms defined in the Credit Agreement are
used herein with the same meanings.

                  The Assignor named on the reverse hereof hereby sells and
assigns, without recourse, to the Assignee named on the reverse hereof, and the
Assignee hereby purchases and assumes, without recourse, from the Assignor,
effective as of the Assignment Date set forth on the reverse hereof, the
interests set forth on the reverse hereof (the "Assigned Interest") in the
Assignor's rights and obligations under the Credit Agreement, including, without
limitation, the interests set forth on the reverse hereof in the Commitment of
the Assignor on the Assignment Date and Revolving Loans owing to the Assignor
which are outstanding on the Assignment Date, together with the participations
in Letters of Credit, LC Disbursements held by the Assignor on the Assignment
Date, but excluding accrued interest and fees to and excluding the Assignment
Date. The Assignee hereby acknowledges receipt of a copy of the Credit
Agreement. From and after the Assignment Date (i) the Assignee shall be a party
to and be bound by the provisions of the Credit Agreement and, to the extent of
the Assigned Interest, have the rights and obligations of a Lender thereunder
and (ii) the Assignor shall, to the extent of the Assigned Interest, relinquish
its rights and be released from its obligations under the Credit Agreement.

                  This Assignment and Acceptance is being delivered to the
Administrative Agent together with (i) if the Assignee is a Foreign Lender, any
documentation required to be delivered by the Assignee pursuant to Section
2.15(e) of the Credit Agreement, duly completed and executed by the Assignee,
and (ii) if the Assignee is not already a Lender under the Credit Agreement, an
Administrative Questionnaire in the form supplied by the Administrative Agent,
duly completed by the Assignee. The [Assignee/Assignor] shall pay the fee
payable to the Administrative Agent pursuant to Section 9.04(b) of the Credit
Agreement.

                  This Assignment and Acceptance shall be governed by and
construed in accordance with the laws of the State of New York.

Date of Assignment:

Legal Name of Assignor:



<PAGE>   89

Legal Name of Assignee:

Assignee's Address for Notices:

Effective Date of Assignment
("Assignment Date"):

<TABLE>
<CAPTION>
                                                  Percentage Assigned of
                                                    Facility/Commitment
                                                     (set forth, to at
                            Principal Amount      least 8 decimals, as a
                             Assigned (and           percentage of the
                              identifying            Facility and the
                              information          aggregate Commitments
                            as to individual          of all Lenders
                                 Loans)                thereunder)
Facility
- --------
<S>                         <C>                   <C>

Commitment Assigned:        $                                         %
Revolving Loans:
Loans:

</TABLE>


The terms set forth above and on the reverse side hereof are hereby agreed to:

                                            [Name of Assignor], as Assignor


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


                                            [Name of Assignee], as Assignee


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


<PAGE>   90










The undersigned hereby consent to the within assignment: 8/
                                                         -

[Name of Borrower],                       Chase Bank of Texas, N.A.,
                                          as Administrative Agent,


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



                                   Chase Bank of Texas, N.A.,
                                   as Issuing Bank


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

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

         /        Consents to be included to the extent required by Section
        -         9.04(b) of the Credit Agreement.


<PAGE>   91








                                  SCHEDULE 2.01


<TABLE>
<CAPTION>

             LENDERS                                      COMMITMENT
- --------------------------------                          -----------
<S>                                                       <C>
Chase Bank of Texas, National                             $12,000,000
Association

NationsBank, N.A. (D/B/A Bank of                          $11,000,000
America, N.A.)

Bank One, Texas, NA                                       $11,000,000

Credit Lyonnais New York Branch                           $11,000,000

Branch Banking & Trust Company                            $11,000,000

The Bank of Nova Scotia                                   $ 9,500,000

Comerica Bank                                             $ 9,500,000
</TABLE>



<PAGE>   92
                                                                    EXHIBIT 6.11



<TABLE>
<CAPTION>

- -------------------------------------------------------------------------------------------------------------------
                                      ACQUISITION INFORMATION WORKSHEET
- -------------------------------------------------------------------------------------------------------------------
 Proposed     Property   Location of   Environmental  Total Assets   Business Mix   Closing     Purchase Price
Acquisition    Owned/      plants        Performed      A/R Inv.     Residential     Date    ----------------------
               Leased    # of trucks                     PP&E         Commercial              Cash   Stock   Total
              Location                                               Public Works
- ------------ ---------- ------------- -------------- -------------- -------------- --------- ------ ------- -------
<S>          <C>        <C>           <C>            <C>            <C>            <C>       <C>    <C>     <C>

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

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

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

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

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

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

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

<CAPTION>

- ---------------------------------
ACQUISITION INFORMATION WORKSHEET
- ---------------------------------
    LTM        Pro     EBITDA
  Revenues    Forma    Margin
               LTM
             EBITDA
- ----------- --------- ---------
<S>         <C>       <C>

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

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

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

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

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

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

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

</TABLE>

<PAGE>   1

                                                                     EXHIBIT 4.7

                               FIRST AMENDMENT TO
                                CREDIT AGREEMENT

        This FIRST AMENDMENT TO CREDIT AGREEMENT (this "Amendment"), effective
as of June 30, 1999, is entered into by and among U.S. CONCRETE, INC., a
Delaware corporation, (the "Company"), the Guarantors party thereto, the Lenders
signatory hereto under the caption "Lenders" (together with each other Person
who becomes a Lender, collectively, the "Lenders") and CHASE BANK OF TEXAS,
NATIONAL ASSOCIATION, a national banking association, individually as a Lender,
and as administrative agent for the other Lenders (in such capacity, together
with any other Person who becomes the administrative agent, the "Administrative
Agent"), NationsBank, N.A. (D/B/A Bank of America, N.A.), as Syndication Agent,
and Bank One, Texas, NA and Credit Lyonnais New York Branch, as Co-Agents for
the Lenders.

                              PRELIMINARY STATEMENT

                  WHEREAS, the Company, the Guarantors, the Lenders, the
Administrative Agent, the syndication agent and the co-agents have entered into
that certain Credit Agreement dated as of May 28, 1999 (said Credit Agreement,
as amended and as may be amended, extended, supplemented or amended and restated
from time to time, the "Credit Agreement"); and

                  WHEREAS, the Company has requested the Lenders and the
Administrative Agent to amend and modify certain terms of the Credit Agreement;
and

                  WHEREAS, the Lenders and the Administrative Agent have agreed
to do so to the extent reflected in this Amendment, provided that each of the
Company and the Guarantors ratifies and confirms all of its respective
obligations under the Credit Agreement and the Loan Documents and agrees to make
certain other amendments as set forth here.

         NOW, THEREFORE, in consideration of the premises and for other good and
valuable consideration and the mutual benefits, covenants and agreements herein
expresses, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto hereby agree as follows:

         1. Defined Terms and Overall Changes. All capitalized terms used in
this Amendment and not otherwise defined herein shall have the meanings ascribed
to such terms in the Credit Agreement.

         2. Amendment to Section 5.10. Section 5.10 of the Credit Agreement is
hereby restated in its entirety to read as follows:



<PAGE>   2




                  "SECTION 5.10. Collateral . (a) The Borrower will, and will
         cause each of its Subsidiaries to, (i) within 60 days of the Effective
         Date provide evidence satisfactory to the Administrative Agent that
         substantially all Certificates of Title for each vehicle with a gross
         vehicle weight in excess of 40,000 pounds, including all mixer trucks
         and aggregate delivery trucks, owned by the Borrower or any Subsidiary
         have been submitted to the appropriate state department of motor
         vehicles or other regulatory authority as appropriate for the
         jurisdiction of location of such vehicle for the purpose of having the
         Administrative Agent for the benefit of the Lenders recorded as
         lienholder on each of such Certificates of Title, (ii) within 30 days
         of the acquisition after the Effective Date of any vehicle weighing in
         excess of 40,000 pounds, provide evidence satisfactory to the
         Administrative Agent that the Certificate of Title for such newly
         acquired vehicle shall have been submitted to the appropriate state
         department of motor vehicles or other regulatory authority as
         appropriate for the jurisdiction of location of such vehicle for the
         purpose of having the Administrative Agent for the benefit of the
         Lenders recorded as lienholder on each such Certificate of Title;
         provided, that in either case of (i) or (ii) above and so long as there
         is no Default or Event of Default, any Certificate of Title which
         evidences the Administrative Agent for the benefit of the Lenders as
         lienholder shall be returned to the Borrower, (iii) promptly upon
         receipt, provide to the Administrative Agent a copy of each Certificate
         of Title submitted pursuant to clause (i) and (ii) above showing the
         Administrative Agent as lienholder and (iv) use reasonably commercial
         efforts to provide to the Administrative Agent within 60 days of the
         Effective Date landlord's consents to the assignment of leasehold
         estates not pledged pursuant to Section 4.01(c)(iv) and to execute
         leasehold deeds of trust or mortgages, subject only to Permitted Liens,
         granting a first priority perfected security interest in such leasehold
         interests.

                           (b) Upon acquisition of any (i) fee interest in any
         real property or (ii) material leasehold interest in any real property
         used in the operation (as opposed to administration) of the business of
         the Borrower or any Subsidiary, the Borrower will, and will cause each
         of its Subsidiaries to, (y) execute in form and substance reasonably
         satisfactory to the Administrative Agent, a deed of trust or mortgage,
         as applicable, in respect of such fee interest and (z) use reasonably
         commercial efforts to execute in form and substance reasonably
         satisfactory to the Administrative Agent, a leasehold deed of trust or
         mortgage, as applicable, in each case granting a first priority
         perfected Lien on such property as collateral for the Loans, subject
         only to Permitted Liens.

                           (c) The Borrower will, and will cause each of its
         Subsidiaries to, use reasonably commercial efforts in negotiating any
         material new lease or the


<PAGE>   3




         renewal or extension of any existing lease covering real property to
         provide in such lease that the interest of the lessee may be
         hypothecated without any further approval of the landlord.

                            (d) The Borrower shall provide to the Administrative
         Agent certified copies of Requests for Information or Copies (Form
         UCC-11) or equivalent commercially obtained reports, dated within 90
         days of the Effective Date listing all effective financing statements
         which name any of the Borrower or any Founding Company or any of their
         Subsidiaries (under any of their present names and any previous names)
         as debtor and which are filed in all jurisdictions in which the
         Borrower or any of its Subsidiaries owns property or conducts business,
         together with copies of such financing statements.

                           (e) The Borrower shall provide to the Administrative
         Agent, upon request, a bring down or date down certificate to any
         preliminary title reports provided pursuant to Section 4.01(q), as
         evidence to the Administrative Agent of satisfactory release of any
         financing or tax lien encumbering any property subject to the Security
         Documents delivered pursuant to Section 4.01(c)(iv)."

                  3. Amendment to Section 6.02(d). Section 6.02(d) of the Credit
Agreement is restated in its entirety to read as follows:

                           "(d) Liens securing potential prepayment obligations
         of Walker's Concrete, Inc. to Union Bank of California encumbering
         assets of Walker's Concrete, Inc.; provided (i) no further Indebtedness
         is owing by the Borrower or any Subsidiary to said bank and (ii) said
         Liens are fully extinguished and released prior to July 31, 1999; and"

                  4. Ratification. Each of the Company and each Guarantor hereby
ratifies all of its obligations under the Credit Agreement and each of the Loan
Documents to which it is a party, and agrees and acknowledges that the Credit
Agreement and each of the Loan Documents to which it is a party shall continue
in full force and effect as amended and modified by this Amendment. Nothing in
this Amendment extinguishes, novates or releases any right, claim, lien,
security interest or entitlement of any of the Lenders or the Administrative
Agent created by or contained in any of such documents nor is the Company or any
Guarantor released from any covenant, warranty or obligation created by or
contained herein.

                  5. Representations and Warranties. Each of the Company and
each Guarantor hereby represents and warrants to the Administrative Agent and
the Lenders that (a) this Amendment has been duly executed and delivered on
behalf of the Company and such Guarantor, as the case may be,


<PAGE>   4

subject to applicable bankruptcy, insolvency, fraudulent transfer,
reorganization, moratorium or other laws affecting creditors' rights generally
and subject to general principles of equity, regardless of whether considered in
a proceeding in equity or at law, (b) this Amendment constitutes a valid and
legally binding agreement enforceable against the Company or such Guarantor, as
the case may be, in accordance with its terms, (c) the representations and
warranties contained in the Credit Agreement and the Loan Documents are true and
correct on and as of the date hereof in all material respects as though made as
of the date hereof, except as heretofore otherwise disclosed in writing to the
Administrative Agent, (d) no Default exists under the Credit Agreement or under
any of Loan Document and (e) the execution, delivery and performance of this
Amendment has been duly authorized by the Company and each Guarantor.

                  6. Conditions to Effectiveness. This Amendment shall be
effective upon the execution and delivery hereof by all parties to the
Administrative Agent and receipt by the Administrative Agent of (a) this
Amendment and (b) a certificate of an officer of the Company certifying that all
conditions in Section 4.02 of the Credit Agreement shall be satisfied.

                  7. Counterparts. This Amendment may be signed in any number of
counterparts, which may be delivered in original or facsimile form each of which
shall be construed as an original, but all of which together shall constitute
one and the same instrument.

                  8. Governing Law. THIS AGREEMENT, ALL NOTES, THE OTHER LOAN
DOCUMENTS AND ALL OTHER DOCUMENTS EXECUTED IN CONNECTION HEREWITH SHALL BE
DEEMED TO BE CONTRACTS AND AGREEMENTS UNDER THE LAWS OF THE STATE OF TEXAS AND
OF THE UNITED STATES OF AMERICA AND FOR ALL PURPOSES SHALL BE CONSTRUED IN
ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF TEXAS AND OF THE UNITED STATES.

                  9. Final Agreement of the Parties. THIS AMENDMENT AND THE
CREDIT AGREEMENT AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT
BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.


                     [REMAINDER OF PAGE INTENTIONALLY BLANK]



<PAGE>   5





                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed by their respective officers thereunto duly authorized
as of the date first above written.

                            COMPANY:

                                     U.S. CONCRETE



                                     By:
                                              Michael W. Harlan
                                              Senior Vice President

                            GUARANTORS:

                                     Baer Concrete, Incorporated, a New Jersey
                                          corporation
                                     Bay Cities Building Materials Co., Inc., a
                                          California corporation
                                     B.C.B.M. Transport, Inc., a California
                                          corporation
                                     Central Concrete Supply Co., Inc. a
                                          California corporation
                                     Opportunity Concrete Corporation, a
                                          District of Columbia corporation
                                     R.G. Evans/Associates, d/b/a/ Santa Rosa
                                          Cast Products Co., a California
                                          corporation
                                     Walker's Concrete, Inc., a California
                                          corporation



                                     By:
                                              Michael W. Harlan
                                              Vice President



<PAGE>   6






                               ADMINISTRATIVE AGENT/LENDER:

                                         CHASE BANK OF TEXAS,
                                         NATIONAL ASSOCIATION



                                               By:
                                                      James R. Dolphin
                                                      Senior Vice President




<PAGE>   7






                               SYNDICATION AGENT/LENDER:

                                         NATIONSBANK, N.A.
                                         (D/B/A BANK OF AMERICA, N.A.)



                                         By:

                                         Name:

                                         Title:






<PAGE>   8





                               LENDER:

                                         THE BANK OF NOVA SCOTIA





                                         By:

                                         Name:
                                         Title:





<PAGE>   9




                              CO-AGENT/LENDER:

                                         BANK ONE, TEXAS, N.A.



                                         By:

                                         Name:
                                         Title:





<PAGE>   10




                              LENDER:

                                         BRANCH BANKING & TRUST COMPANY



                                         By:

                                         Name:
                                         Title:





<PAGE>   11




                              LENDER:

                                         COMERICA BANK



                                         By:

                                         Name:
                                         Title:






<PAGE>   12



                              CO-AGENT/LENDER:

                                         CREDIT LYONNAIS
                                         NEW YORK BRANCH



                                         By:

                                         Name:
                                         Title:




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<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
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<SECURITIES>                                         0
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                                0
                                          0
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<EXTRAORDINARY>                                      0
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<NET-INCOME>                                       325
<EPS-BASIC>                                        .05
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