Exhibit 4.1

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



                            PENHALL ACQUISITION CORP.

                                       and

                     UNITED STATES TRUST COMPANY OF NEW YORK

                                   as Trustee

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

                                   INDENTURE


                            Dated as of August 1, 1998

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

                               up to $150,000,000

                       12% Senior Notes due 2006, Series A
                       12% Senior Notes due 2006, Series B


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








                              CROSS-REFERENCE TABLE



  TIA                                                                                Indenture
Section                                                                               Section
- -------                                                                               -------

                                                                                  
310(a)(1)............................................................................  7.10
      (a)(2).........................................................................  7.10
      (a)(3).........................................................................  N.A.
      (a)(4).........................................................................  N.A.
      (a)(5).........................................................................  7.10
      (b)............................................................................  7.08; 7.10;
                                                                                       11.02
      (c)............................................................................  N.A.
311(a)...............................................................................  7.11
      (b)............................................................................  7.11
      (c)............................................................................  N.A.
312(a)...............................................................................  2.05
      (b)............................................................................  11.03
      (c)............................................................................  11.03
313(a)...............................................................................  7.06
      (b)(1).........................................................................  N.A.
      (b)(2).........................................................................  7.06
      (c)............................................................................  7.06; 11.02
      (d)............................................................................  7.06
314(a)...............................................................................  4.06; 4.08;
                                                                                       11.02
      (b)............................................................................  N.A.
      (c)(1).........................................................................  11.04
      (c)(2).........................................................................  11.04
      (c)(3).........................................................................  N.A.
      (d)............................................................................  N.A.
      (e)............................................................................  11.05
      (f)............................................................................  N.A.
315(a)...............................................................................  7.01(b)
      (b)............................................................................  7.05; 11.02
      (c)............................................................................  7.01(a)
      (d)............................................................................  7.01(c)
      (e)............................................................................  6.11
316(a)(last sentence)................................................................  2.09
      (a)(1)(A)......................................................................  6.05
      (a)(1)(B)......................................................................  6.04
      (a)(2).........................................................................  N.A.
      (b)............................................................................  6.07
      (c)............................................................................  9.04
317(a)(1)............................................................................  6.08
      (a)(2).........................................................................  6.09
      (b)............................................................................  2.04
318(a)...............................................................................  11.01
      (c)............................................................................  11.01



N.A. means Not Applicable.

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




Note: This Cross-Reference Table shall not, for any purpose, be deemed to be
     part of the Indenture.


                                TABLE OF CONTENTS




                                                                                               Page
                                                                                               ----


                                                  ARTICLE ONE

                                  DEFINITIONS AND INCORPORATION BY REFERENCE

                                                                                            
SECTION 1.01.                Definitions............................................................1
SECTION 1.02.                Incorporation by Reference of TIA.....................................28
SECTION 1.03.                Rules of Construction.................................................29

                                                  ARTICLE TWO

                                                   THE NOTES

SECTION 2.01.                Form and Dating.......................................................29
SECTION 2.02.                Execution and Authentication;
                                Aggregate Principal Amount.  ......................................30
SECTION 2.03.                Registrar and Paying Agent............................................32
SECTION 2.04.                Paying Agent To Hold Assets in Trust..................................33
SECTION 2.05.                Holder Lists..........................................................33
SECTION 2.06.                Transfer and Exchange.................................................33
SECTION 2.07.                Replacement Notes.....................................................34
SECTION 2.08.                Outstanding Notes.....................................................35
SECTION 2.09.                Treasury Notes........................................................35
SECTION 2.10.                Temporary Notes.......................................................35
SECTION 2.11.                Cancellation..........................................................36
SECTION 2.12.                Defaulted Interest....................................................36
SECTION 2.13.                CUSIP Numbers.........................................................37
SECTION 2.14.                Deposit of Monies.....................................................37
SECTION 2.15.                Restrictive Legends...................................................38
SECTION 2.16.                Book-Entry Provisions
                                for Global Notes. .................................................40
SECTION 2.17.                Special Transfer Provisions...........................................41

                                                 ARTICLE THREE

                                                  REDEMPTION

SECTION 3.01.                Notices to Trustee....................................................44
SECTION 3.02.                Selection of Notes To Be Redeemed.....................................44
SECTION 3.03.                Optional Redemption...................................................45
SECTION 3.04.                Notice of Redemption..................................................46




- -----------------
N.A. means Not Applicable.


Note: This Cross-Reference Table shall not, for any purpose, be deemed to be
     part of the Indenture.






                                                                                                  Page
                                                                                                  ----
                                                                                            
SECTION 3.05.                Effect of Notice of Redemption........................................47
SECTION 3.06.                Deposit of Redemption Price...........................................47
SECTION 3.07.                Notes Redeemed in Part................................................48

                                                 ARTICLE FOUR

                                                   COVENANTS

SECTION 4.01.                Payment of Notes......................................................48
SECTION 4.02.                Maintenance of Office or Agency.......................................48
SECTION 4.03.                Corporate Existence...................................................49
SECTION 4.04.                Payment of Taxes and Other Claims.....................................49
SECTION 4.05.                Maintenance of Properties
                                and Insurance......................................................49
SECTION 4.06.                Compliance Certificate;
                                Notice of Default..................................................50
SECTION 4.07.                Compliance with Laws..................................................51
SECTION 4.08.                Reports to Holders....................................................51
SECTION 4.09.                Waiver of Stay, Extension
                                or Usury Laws......................................................52
SECTION 4.10.                Limitation on Restricted Payments.....................................52
SECTION 4.11.                Limitations on Transactions
                                with Affiliates....................................................55
SECTION 4.12.                Limitation on Incurrence
                                of Additional Indebtedness.........................................56
SECTION 4.13.                Limitation on Dividend and
                                Other Payment Restrictions
                                Affecting Subsidiaries.............................................57
SECTION 4.14.                Change of Control.....................................................58
SECTION 4.15.                Limitation on Asset Sales.............................................60
SECTION 4.16.                Limitation on Preferred
                                Stock of Restricted Subsidiaries...................................62
SECTION 4.17.                Limitation on Liens...................................................63
SECTION 4.18.                Additional Subsidiary Guarantees......................................64
SECTION 4.19.                Conduct of Business...................................................64
SECTION 4.20.                No Restrictions on Consummation of the Recapitalization...............64
SECTION 4.21.                Additional Equity Contributions.......................................64

                                                 ARTICLE FIVE

                                             SUCCESSOR CORPORATION

SECTION 5.01.                Merger, Consolidation
                                and Sale of Assets.................................................65
SECTION 5.02.                Successor Corporation Substituted.....................................66



                                       ii





                                   ARTICLE SIX

                                    REMEDIES

                                                                                                  Page
                                                                                                  ----
                                                                                            
SECTION 6.01.                Events of Default.....................................................67
SECTION 6.02.                Acceleration..........................................................69
SECTION 6.03.                Other Remedies........................................................70
SECTION 6.04.                Waiver of Past Defaults...............................................70
SECTION 6.05.                Control by Majority...................................................70
SECTION 6.06.                Limitation on Suits...................................................71
SECTION 6.07.                Right of Holders To Receive Payment...................................71
SECTION 6.08.                Collection Suit by Trustee............................................71
SECTION 6.09.                Trustee May File Proofs of Claim......................................72
SECTION 6.10.                Priorities............................................................72
SECTION 6.11.                Undertaking for Costs.................................................73

                                                 ARTICLE SEVEN

                                                    TRUSTEE

SECTION 7.01.                Duties of Trustee.....................................................73
SECTION 7.02.                Rights of Trustee.....................................................75
SECTION 7.03.                Individual Rights of Trustee..........................................76
SECTION 7.04.                Trustee's Disclaimer..................................................76
SECTION 7.05.                Notice of Default.....................................................76
SECTION 7.06.                Reports by Trustee to Holders.........................................77
SECTION 7.07.                Compensation and Indemnity............................................77
SECTION 7.08.                Replacement of Trustee................................................78
SECTION 7.09.                Successor Trustee by Merger, Etc......................................79
SECTION 7.10.                Eligibility; Disqualification.........................................80
SECTION 7.11.                Preferential Collection of
                                Claims Against Company.............................................80

                                                 ARTICLE EIGHT

                                      DISCHARGE OF INDENTURE; DEFEASANCE

SECTION 8.01.                Termination of Company's Obligations..................................80
SECTION 8.02.                Application of Trust Money............................................83
SECTION 8.03.                Repayment to the Company..............................................83
SECTION 8.04.                Reinstatement.........................................................84
SECTION 8.05.                Acknowledgment of Discharge
                                by Trustee.........................................................84



                                       iii







                                  ARTICLE NINE

                          MODIFICATION OF THE INDENTURE
                                                                                                  Page
                                                                                                  ----
                                                                                            
SECTION 9.01.                Without Consent of Holders............................................85
SECTION 9.02.                With Consent of Holders...............................................85
SECTION 9.03.                Compliance with TIA...................................................87
SECTION 9.04.                Revocation and Effect of Consents.....................................87
SECTION 9.05.                Notation on or Exchange of Notes......................................88
SECTION 9.06.                Trustee To Sign Amendments, Etc.......................................88

                                                  ARTICLE TEN

                                              GUARANTEE OF NOTES

SECTION 10.01.               Unconditional Guarantee...............................................88
SECTION 10.02.               Limitations on Guarantees.............................................90
SECTION 10.03.               Execution and Delivery of Guarantee...................................90
SECTION 10.04.               Release of Guarantors.................................................91
SECTION 10.05.               Waiver of Subrogation.................................................92
SECTION 10.06.               Immediate Payment.....................................................92
SECTION 10.07.               Obligations Continuing................................................93
SECTION 10.08.               Obligations Reinstated................................................93
SECTION 10.09.               Obligations Not Affected..............................................93
SECTION 10.10.               Waiver................................................................93
SECTION 10.11.               No Obligation To Take Action
                                Against the Company................................................94
SECTION 10.12.               Dealing with the Company and Others...................................94
SECTION 10.13.               Default and Enforcement...............................................94
SECTION 10.14.               Amendment, Etc........................................................95
SECTION 10.15.               Acknowledgment........................................................95
SECTION 10.16.               Costs and Expenses....................................................95
SECTION 10.17.               No Waiver; Cumulative
                                Remedies...........................................................95
SECTION 10.18.               Survival of Obligations...............................................95
SECTION 10.19.               Guarantee in Addition to Other
                                Obligations........................................................96
SECTION 10.20.               Severability..........................................................96
SECTION 10.21.               Successors and Assigns................................................96

                                                ARTICLE ELEVEN

                                                 MISCELLANEOUS

SECTION 11.01.               TIA Controls..........................................................96
SECTION 11.02.               Notices...............................................................97
SECTION 11.03.               Communications by Holders
                                with Other Holders.................................................98



                                       iv




                                                                                                  Page
                                                                                                  ----
                                                                                            
SECTION 11.04.               Certificate and Opinion as
                                to Conditions Precedent............................................98
SECTION 11.05.               Statements Required in
                                Certificate or Opinion.............................................98
SECTION 11.06.               Rules by Trustee, Paying
                                Agent, Registrar...................................................99
SECTION 11.07.               Legal Holidays........................................................99
SECTION 11.08.               Governing Law.........................................................99
SECTION 11.09.               No Adverse Interpretation
                                of Other Agreements................................................99
SECTION 11.10.               No Personal Liability................................................100
SECTION 11.11.               Successors...........................................................100
SECTION 11.12.               Duplicate Originals..................................................100
SECTION 11.13.               Severability.........................................................100
SECTION 11.14.               Independence of Covenants............................................100




                                                                                            
Exhibit A -         Form of Initial Note..........................................................A-1
Exhibit B -         Form of Exchange Note.........................................................B-1
Exhibit C -         Form of Certificate To Be Delivered in Connection with Transfers to
                        Non-QIB Accredited Investors..............................................C-1
Exhibit D -         Form of Certificate To Be Delivered in Connection with Transfers
                        Pursuant to Regulation S..................................................D-1
Exhibit E -         Form of Guarantee.............................................................E-1



Note:    This Table of Contents shall not, for any purpose, be deemed to be part
         of the Indenture


                                       v





                  INDENTURE, dated as of August 1, 1998, between PENHALL
ACQUISITION CORP., an Arizona corporation (the "Company"), and UNITED STATES
TRUST COMPANY OF NEW YORK, a New York banking corporation, as Trustee (the
"Trustee").

                  The Company has duly authorized the creation of an issue of
12% Senior Notes due 2006, Series A, and 12% Senior Notes due 2006, Series B, to
be issued in exchange for the 12% Senior Notes due 2006, Series A, pursuant to a
Registration Rights Agreement (as defined) and, to provide therefor, the Company
has duly authorized the execution and delivery of this Indenture. All things
necessary to make the Notes (as defined), when duly issued and executed by the
Company and authenticated and delivered hereunder, the valid and binding
obligations of the Company and to make this Indenture a valid and binding
agreement of the Company have been done.

                  Each party hereto agrees as follows for the benefit of the
other parties and for the equal and ratable benefit of the Holders of the
Company's 12% Senior Notes due 2006, Series A and Series B:


                                   ARTICLE ONE

                   DEFINITIONS AND INCORPORATION BY REFERENCE


                  SECTION 1.01. Definitions.

                  "Acquired Indebtedness" means Indebtedness of a Person or any
of its Subsidiaries existing at the time such Person becomes a Restricted
Subsidiary of the Company or at the time it merges or consolidates with the
Company or any of its Restricted Subsidiaries or assumed in connection with the
acquisition of assets from such Person and in each case not incurred by such
Person in connection with, or in anticipation or contemplation of, such Person
becoming a Restricted Subsidiary of the Company or such acquisition, merger or
consolidation.

                  "Affiliate" means, with respect to any specified Person, any
other Person who directly or indirectly through one or more intermediaries
controls, or is controlled by, or is under common control with, such specified
Person. The term "control" means the possession, directly or indirectly, of the
power to direct or cause the direction of the management and policies of a
Person, whether through the ownership of voting securities, by contract or
otherwise; and the terms "controlling" and "controlled" have meanings
correlative of the foregoing.




                  "Affiliate Transaction" has the meaning provided in Section
4.11.

                  "Agent" means any Registrar, Paying Agent or co-Registrar.

                  "Agent Members" has the meaning provided in Section 2.16.

                  "Asset Acquisition" means (a) an Investment by the Company or
any Restricted Subsidiary of the Company in any other Person pursuant to which
such Person shall become a Restricted Subsidiary of the Company or any
Restricted Subsidiary of the Company, or shall be merged with or into the
Company or any Restricted Subsidiary of the Company, or (b) the acquisition by
the Company or any Restricted Subsidiary of the Company of the assets of any
Person (other than a Restricted Subsidiary of the Company) which constitute all
or substantially all of the assets of such Person or comprise any division or
line of business of such Person or any other properties or assets of such Person
other than in the ordinary course of business.

                  "Asset Sale" means any direct or indirect sale, issuance,
conveyance, transfer, lease (other than operating leases entered into in the
ordinary course of business), assignment or other transfer for value by the
Company or any of its Restricted Subsidiaries (including any Sale and Leaseback
Transaction) to any Person other than the Company or a Restricted Subsidiary of
the Company of (a) any Capital Stock of any Restricted Subsidiary of the
Company; or (b) any other property or assets of the Company or any Restricted
Subsidiary of the Company other than in the ordinary course of business;
provided, however, that Asset Sales shall not include (i) a transaction or
series of related transactions for which the Company or its Restricted
Subsidiaries receive aggregate consideration of less than $1,000,000, (ii) the
sale, lease, conveyance, disposition or other transfer of all or substantially
all of the assets of the Company as permitted under Section 5.01, (iii)
disposals or replacements of obsolete or outdated equipment in the ordinary
course of business and (iv) a disposition consisting of a Permitted Investment
or Restricted Payment permitted under Section 4.10.

                  "Authenticating Agent" has the meaning provided in Section
2.02.

                  "Bank Credit Facility" means the New Credit Facility and any
other agreement or agreements between the Company and/or one or more of the
Guarantors and a financial institution or institutions, providing for the making
of loans, on a 

                                       2


term or revolving basis, the issuance of letters of credit and/or the creation
of bankers' acceptances.

                  "Bankruptcy Law" means Title 11, U.S. Code or any similar
Federal, state or foreign law for the relief of debtors.

                  "Board of Directors" means, as to any Person, the board of
directors of such Person or any duly authorized committee thereof.

                  "Board Resolution" means, with respect to any Person, a copy
of a resolution certified by the Secretary or an Assistant Secretary of such
Person to have been duly adopted by the Board of Directors of such Person and to
be in full force and effect on the date of such certification, and delivered to
the Trustee.

                  "Borrowing Base" means the sum of (i) 85% of the net book
value of the accounts receivable of the Company and the Restricted Subsidiaries
of the Company and (ii) 50% of the net book value of the inventory of the
Company and the Restricted Subsidiaries of the Company.

                  "BRS" means Bruckmann, Rosser, Sherril & Co., L.P.

                  "Business Day" means any day other than a Saturday, Sunday or
any other day on which commercial banking institutions in the City of New York
are required or authorized by law or other governmental action to be closed.

                  "Capital Stock" means (i) with respect to any Person that is a
corporation, any and all shares, interests, participations or other equivalents
(however designated and whether or not voting) of corporate stock, including
each class of Common Stock and Preferred Stock of such Person and including any
warrants, options or rights to acquire any of the foregoing and instruments
convertible into any of the foregoing, and (ii) with respect to any Person that
is not a corporation, any and all partnership or other equity interests of such
Person.

                  "Capitalized Lease Obligations" means, as to any Person, the
obligations of such Person under a lease that are required to be classified and
accounted for as capital lease obligations under GAAP and, for purposes of this
definition, the amount of such obligations at any date shall be the capitalized
amount of such obligations at such date, determined in accordance 
with GAAP.


                                       3



                  "Cash Equivalents" means (i) marketable direct obligations
issued by, or unconditionally guaranteed by, the United States Government or
issued by any agency thereof and backed by the full faith and credit of the
United States, in each case maturing within one year from the date of
acquisition thereof; (ii) marketable direct obligations issued by any state of
the United States of America or any political subdivision of any such state or
any public instrumentality thereof maturing within one year from the date of
acquisition thereof and, at the time of acquisition, having one of the two
highest ratings obtainable from either S&P or Moody's; (iii) commercial paper
maturing no more than one year from the date of creation thereof and, at the
time of acquisition, having a rating of at least A-1 from S&P or at least P-1
from Moody's; (iv) certificates of deposit or bankers' acceptances maturing
within one year from the date of acquisition thereof issued by any bank
organized under the laws of the United States of America or any state thereof or
the District of Columbia or any U.S. branch of a foreign bank having at the date
of acquisition thereof combined capital and surplus of not less than
$250,000,000; (v) repurchase obligations with a term of not more than seven days
for underlying securities of the types described in clause (i) above entered
into with any bank meeting the qualifications specified in clause (iv) above;
and (vi) investments in money market funds which invest substantially all their
assets in securities of the types described in clauses (i) through (v) above.

                  "Certificated Securities" means Notes in definitive registered
form.

                  "Change of Control" means the occurrence of one or more of the
following events: (i) any sale, lease, exchange or other transfer (in one
transaction or a series of related transactions) of all or substantially all of
the assets of the Company to any Person or group of related Persons for purposes
of Section 13(d) of the Exchange Act (a "Group"), together with any Affiliates
thereof (whether or not otherwise in compliance with the provisions of this
Indenture) (other than a Person or Group controlled by a Permitted Holder); (ii)
the approval by the holders of Capital Stock of the Company of any plan or
proposal for the liquidation or dissolution of the Company (whether or not
otherwise in compliance with the provisions of this Indenture); (iii) any Person
or Group (other than the Permitted Holders) shall become the owner, directly or
indirectly, beneficially or of record, of shares of Capital Stock of the Company
representing more than 50% of the aggregate ordinary voting power represented by
the issued and outstanding Capital Stock of the Company; (iv) Permitted Holders
cease to beneficially own shares of Capital Stock of the Company representing


                                       4


more than 35% of the aggregate ordinary voting power represented by the issued
and outstanding Capital Stock of the Company, and any Person or Group (other
than Permitted Holders), directly or indirectly, beneficially or of record, owns
shares of Capital Stock having more of the aggregate ordinary voting power of
the Capital Stock of the Company than the aggregate ordinary voting power
represented by shares of Capital Stock of the Company owned by Permitted
Holders; or (v) the replacement of a majority of the Board of Directors of the
Company over a two-year period from the directors who constituted the Board of
Directors of the Company at the beginning of such period, and such replacement
shall not have been approved by a vote of at least a majority of the Board of
Directors of the Company then still in office who either were members of such
Board of Directors at the beginning of such period or whose election as a member
of such Board of Directors was previously so approved.

                  "Change of Control Offer" has the meaning provided in Section
4.14.

                  "Change of Control Payment Date" has the meaning provided in
Section 4.14.

                  "Closing Fee" means the $2.0 million payment due from the
Company to Bruckmann, Rosser, Sherrill & Co., Inc. as of the Closing Date.

                  "Commission" means the U.S. Securities and Exchange
Commission.

                  "Common Stock" of any Person means any and all shares,
interests or other participations in, and other equivalents (however designated
and whether voting or non-voting) of, such Person's common stock, whether
outstanding on the Issue Date or issued after the Issue Date, and includes,
without limitation, all series and classes of such common stock.

                  "Company" means Penhall Acquisition Corp., an Arizona
corporation.

                  "Consolidated EBITDA" means, with respect to any Person, for
any period, the sum (without duplication) of (i) Consolidated Net Income and
(ii) to the extent Consolidated Net Income has been reduced thereby, (A) all
income taxes of such Person and its Restricted Subsidiaries paid or accrued in
accordance with GAAP for such period (other than income taxes attributable to
extraordinary, unusual or nonrecurring gains or losses or taxes attributable to
sales or dispositions outside the ordinary course of business), (B) Consolidated
Interest Expense and (C) Consolidated Non-cash Charges less any non-cash 



                                       5


items increasing Consolidated Net Income for such period, (D) fees and expenses
of the HSI Acquisition and the Transactions (as defined in the Offering
Memorandum), including but not limited to capitalization of costs and expenses
related thereto, and (E) nonrecurring severance and transaction costs incurred
in connection with any acquisition, all as determined on a consolidated basis in
accordance with GAAP for such Person and its Restricted Subsidiaries.

                  "Consolidated Fixed Charge Coverage Ratio" means, with respect
to any Person, the ratio of Consolidated EBITDA of such Person during the four
full fiscal quarters (the "Four Quarter Period") ending on or prior to the date
of the transaction giving rise to the need to calculate the Consolidated Fixed
Charge Coverage Ratio (the "Transaction Date") to Consolidated Fixed Charges of
such Person for such Four Quarter Period. In addition to and without limitation
of the foregoing, for purposes of this definition, "Consolidated EBITDA" and
"Consolidated Fixed Charges" shall be calculated after giving effect on a pro
forma basis (including any pro forma expense and cost reductions calculated on a
basis consistent with Regulation S-X under the Securities Act) for the period of
such calculation to (i) the incurrence or repayment of any Indebtedness of such
Person or any of its Restricted Subsidiaries (and the application of the
proceeds thereof) giving rise to the need to make such calculation and any
incurrence or repayment of other Indebtedness (and the application of the
proceeds thereof), other than the incurrence or repayment of Indebtedness in the
ordinary course of business for working capital purposes pursuant to working
capital facilities, occurring during the Four Quarter Period or at any time
subsequent to the last day of the Four Quarter Period and on or prior to the
Transaction Date, as if such incurrence or repayment, as the case may be (and
the application of the proceeds thereof), occurred on the first day of the Four
Quarter Period and (ii) any Asset Sales or Asset Acquisitions (including,
without limitation, any Asset Acquisition giving rise to the need to make such
calculation as a result of such Person or one of its Restricted Subsidiaries
(including any Person who becomes a Restricted Subsidiary as a result of the
Asset Acquisition) incurring, assuming or otherwise being liable for Acquired
Indebtedness and also including any Consolidated EBITDA attributable to the
assets which are the subject of the Asset Acquisition or Asset Sale during the
Four Quarter Period) occurring during the Four Quarter Period or at any time
subsequent to the last day of the Four Quarter Period and on or prior to the
Transaction Date, as if such Asset Sale or Asset Acquisition (including the
incurrence, assumption or liability for any such Acquired Indebtedness) occurred
on the first day of the Four Quarter Period. If such Person or any of its
Restricted Subsidiaries 


                                       6



directly or indirectly guarantees Indebtedness of a third Person, the preceding
sentence shall give effect to the incurrence of such guaranteed Indebtedness as
if such Person or any Restricted Subsidiary of such Person had directly incurred
or otherwise assumed such guaranteed Indebtedness; provided, however, that where
such Person and one or more of its Restricted Subsidiaries is, or two or more of
such Person's Restricted Subsidiaries, are, liable for the same Indebtedness,
whether as principal or guarantor, the above sentence shall be calculated to
avoid duplication. Furthermore, in calculating "Consolidated Fixed Charges" for
purposes of determining the denominator (but not the numerator) of this
"Consolidated Fixed Charge Coverage Ratio," (1) interest on outstanding
Indebtedness determined on a fluctuating basis as of the Transaction Date and
which will continue to be so determined thereafter shall be deemed to have
accrued at a fixed rate per annum equal to the rate of interest on such
Indebtedness in effect on the Transaction Date; (2) if interest on any
Indebtedness actually incurred on the Transaction Date may optionally be
determined at an interest rate based upon a factor of a prime or similar rate, a
eurocurrency interbank offered rate, or other rates, then the interest rate in
effect on the Transaction Date will be deemed to have been in effect during the
Four Quarter Period; and (3) notwithstanding clause (1) above, interest on
Indebtedness determined on a fluctuating basis, to the extent such interest is
covered by agreements relating to Interest Swap Obligations, shall be deemed to
accrue at the rate per annum resulting after giving effect to the operation of
such agreements.

                  "Consolidated Fixed Charges" means, with respect to any Person
for any period, the sum, without duplication, of (i) Consolidated Interest
Expense, plus (ii) to the extent not included in Consolidated Interest Expense,
the product of (x) the amount of all dividend payments actually paid in cash in
such period on any series of Preferred Stock of such Person or its Restricted
Subsidiaries (other than dividends paid by any Restricted Subsidiary to the
Company or any other Restricted Subsidiary) and (y) a fraction, the numerator of
which is one and the denominator of which is one minus the then current
effective consolidated federal, state and local tax rate of such Person,
expressed as a decimal.

                  "Consolidated Interest Expense" means, with respect to any
Person for any period, the sum of, without duplication: (i) the aggregate of the
interest expense of such Person and its Restricted Subsidiaries for such period
determined on a consolidated basis in accordance with GAAP (excluding any
accrued and unpaid interest on the Junior Subordinated Notes; provided, that
such interest is not payable in cash prior to 



                                       7


the maturity of the Notes), including without limitation, (a) any amortization
of debt discount and amortization or write-off of deferred financing costs, (b)
the net costs under Interest Swap Obligations, (c) all capitalized interest and
(d) the interest portion of any deferred payment obligation; and (ii) the
interest component of Capitalized Lease Obligations paid, accrued and/or
scheduled to be paid or accrued by such Person and its Restricted Subsidiaries
during such period as determined on a consolidated basis in accordance with
GAAP.

                  "Consolidated Net Income" means, with respect to any Person,
for any period, the aggregate net income (or loss) of such Person and its
Restricted Subsidiaries for such period on a consolidated basis, determined in
accordance with GAAP; provided, that aggregate net income (or loss) of such
Person and its Restricted Subsidiaries for such period shall be determined
before any reduction in respect of accrued and unpaid Preferred Stock dividends
and before any reduction for accrued and unpaid interest on the Junior
Subordinated Notes that is not payable in cash prior to the maturity of the
Notes; and provided, further, that there shall be excluded from aggregate net
income (or loss) of such Person and its Restricted Subsidiaries for such period
(a) after-tax gains or losses from Asset Sales (less fees and expenses related
thereto) or abandonments or reserves relating thereto, (b) after-tax items
classified as extraordinary or nonrecurring gains or losses, (c) for purposes of
Section 4.10 only, the net income (or loss) of any Person acquired in a "pooling
of interests" transaction accrued prior to the date it becomes a Restricted
Subsidiary of the referent Person or is merged or consolidated with the referent
Person or any Restricted Subsidiary of the referent Person, (d) the net income
(but not loss) of any Restricted Subsidiary of the referent Person to the extent
that the declaration of dividends or similar distributions by that Restricted
Subsidiary of that income is restricted by a contract, operation of law or
otherwise, except to the extent of cash dividends or distributions paid to the
referent Person or to a Restricted Subsidiary of the referent Person by such
Person, (e) the net income (or loss) of any Person, other than a Restricted
Subsidiary of the referent Person, except to the extent of cash dividends or
distributions paid to the referent Person or to a Restricted Subsidiary of the
referent Person by such Person, (f) any restoration to income of any contingency
reserve, except to the extent that provision for such reserve was made out of
Consolidated Net Income accrued at any time following the Issue Date, (g) income
or loss attributable to discontinued operations (including, without limitation,
operations disposed of during such period whether or not such operations were
classified as discontinued), and (h) for the purpose of Section 4.10 only, in
the case of a successor to the referent Person by consolidation 


                                       8



or merger or as a transferee of the referent Person's assets, any earnings (or
losses) of the successor corporation prior to such consolidation, merger or
transfer of assets.

                  "Consolidated Non-cash Charges" means, with respect to any
Person, for any period, the aggregate depreciation, amortization and other
non-cash charges or expenses of such Person and its Restricted Subsidiaries
reducing Consolidated Net Income of such Person and its Restricted Subsidiaries
for such period, determined on a consolidated basis in accordance with GAAP
(excluding any such charges constituting an extraordinary item or loss or any
such charge which requires an accrual of or a reserve for cash charges for any
future period).

                  "Corporate Trust Office" means the office of the Trustee at
which at any particular time its corporate trust business shall be principally
administered, which office at the date of execution of this Indenture is located
at 114 West 47th Street, New York, New York 10036, except that with respect to
presentation of Notes for payment or for registration of transfer or exchange,
such term shall mean any office or agency of the Trustee at which, at any
particular time, its corporate agency business shall be conducted.

                  "Covenant Defeasance" has the meaning set forth in Section
8.01.

                  "Currency Agreement" means any foreign exchange contract,
currency swap agreement or other similar agreement or arrangement designed to
protect the Company or any Restricted Subsidiary of the Company against
fluctuations in currency values.

                  "Custodian" means any receiver, trustee, assignee, liquidator,
sequestrator or similar official under any Bankruptcy Law.

                  "Default" means an event or condition the occurrence of which
is, or with the lapse of time or the giving of notice or both would be, an Event
of Default.

                  "Depository" means The Depository Trust Company, its nominees
and successors.

                  "Disqualified Capital Stock" means that portion of any Capital
Stock which, by its terms (or by the terms of any security into which it is
convertible or for which it is exchangeable), or upon the happening of any
event, matures or is mandatorily redeemable, pursuant to a sinking fund
obligation or otherwise, or is redeemable at the sole option of the holder


                                       9



thereof on or prior to the final maturity date of the Notes, other than Capital
Stock of the Company which certain management stockholders have the right to put
to the Company pursuant to the terms of the Stockholders' Agreement.

                  "Event of Default" has the meaning provided in Section 6.01.

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended, or any successor statute or statutes thereto.

                  "Exchange Notes" means the 12% Senior Notes due 2006, Series
B, to be issued in exchange for the Initial Notes pursuant to the Registration
Rights Agreement or, with respect to Initial Notes issued under this Indenture
subsequent to the Issue Date pursuant to Section 2.02, a registration rights
agreement substantially identical to the Registration Rights Agreement.

                  "Exchange Offer" has the meaning set forth in the Registration
Rights Agreement.

                  "Exchange Registration Statement" means the registration
statement filed by the Company pursuant to the Registration Rights Agreement.

                  "fair market value" means, with respect to any asset or
property, the price which could be negotiated in an arm's-length, free market
transaction, for cash, between a willing seller and a willing and able buyer,
neither of whom is under undue pressure or compulsion to complete the
transaction. Fair market value shall be determined by the Board of Directors of
the Company acting reasonably and in good faith and shall be evidenced by a
Board Resolution of the Board of Directors of the Company.

                  "Foreign Subsidiary" means any Subsidiary of the Company which
(i) is not organized under the laws of the United States, any state thereof or
the District of Columbia and (ii) conducts substantially all of its business
operations in a country other than the United States of America.

                  "GAAP" means generally accepted accounting principles set
forth in the opinions and pronouncements of the Accounting Principles Board of
the American Institute of Certified Public Accountants and statements and
pronouncements of the Financial Accounting Standards Board or in such other
statements by such other entity as may be approved by a significant segment of
the accounting profession of the United States, which are in effect as of the
Issue Date.


                                       10


                  "Global Note" has the meaning provided in Section 2.01.

                  "guarantee" means a guarantee (other than by endorsement of
negotiable instruments for collection in the ordinary course of business),
direct or indirect, in any manner (including, without limitation, letters of
credit and reimbursement agreements in respect thereof), of all or any part of
any Indebtedness.

                  "Guarantee" means the guarantee of the Notes by the
Guarantors.

                  "Guarantor" means (i) each of the Subsidiaries of the Company
on the Issue Date and (ii) each of the Company's Restricted Subsidiaries that in
the future executes a supplemental indenture in which such Restricted Subsidiary
agrees to be bound by the terms of this Indenture as a Guarantor; provided that
any Person constituting a Guarantor as described above shall cease to constitute
a Guarantor when its respective Guarantee is released in accordance with the
terms of this Indenture. Notwithstanding the above, no direct or indirect
Foreign Subsidiary of the Company will be considered a Guarantor.

                  "Holder" means the Person in whose name a Note is registered
on the Registrar's books.

                  "HSI Acquisition" means the acquisition by Penhall Company, a
California company, of substantially all of the assets of Highway Services Inc.
prior to the Issue Date.

                  "HSI Note" means the $3.7 million secured promissory note
incurred by Penhall Company in connection with the HSI Acquisition.

                  "incur" has the meaning set forth in Section 4.12.

                  "Indebtedness" means with respect to any Person, without
duplication, (i) all Obligations of such Person for borrowed money, (ii) all
Obligations of such Person evidenced by bonds, debentures, notes or other
similar instruments, (iii) all Capitalized Lease Obligations of such Person,
(iv) all Obligations of such Person issued or assumed as the deferred purchase
price of property, all conditional sale obligations and all Obligations under
any title retention agreement (but excluding trade accounts payable and other
accrued liabilities arising in the ordinary course of business that are not
overdue by 90 days or more or are being contested in good faith by appropriate
proceedings promptly instituted and diligently conducted), (v) all Obligations
for the reimbursement of 


                                       11


any obligor on any letter of credit, banker's acceptance or similar credit
transaction, (vi) guarantees and other contingent obligations in respect of
Indebtedness referred to in clauses (i) through (v) above and clause (viii)
below, (vii) all Obligations of any other Person of the type referred to in
clauses (i) through (vi) which are secured by any lien on any property or asset
of such Person, the amount of such Obligation being deemed to be the lesser of
the fair market value of such property or asset or the amount of the Obligation
so secured, (viii) all Obligations under currency agreements and interest swap
agreements of such Person, and (ix) all Disqualified Capital Stock issued by
such Person with the amount of Indebtedness represented by such Disqualified
Capital Stock being equal to the greater of its voluntary or involuntary
liquidation preference and its maximum fixed repurchase price, but excluding
accrued dividends, if any. For purposes hereof, the "maximum fixed repurchase
price" of any Disqualified Capital Stock which does not have a fixed repurchase
price shall be calculated in accordance with the terms of such Disqualified
Capital Stock as if such Disqualified Capital Stock were purchased on any date
on which Indebtedness shall be required to be determined pursuant to this
Indenture, and if such price is based upon, or measured by, the fair market
value of such Disqualified Capital Stock, such fair market value shall be
determined reasonably and in good faith by the Board of Directors of the issuer
of such Disqualified Capital Stock. The amount of Indebtedness of any Person at
any date shall be the outstanding balance on such date of all unconditional
Obligations as described above, and the maximum liability upon the occurrence of
the contingency giving rise to the Obligation, on any contingent Obligations at
such date; provided, however, that the amount outstanding at any time of any
Indebtedness incurred with original issue discount is the face amount of such
Indebtedness less the remaining unamortized portion of the original issue
discount of such Indebtedness at such time as determined in conformity with
GAAP.

                  "Indenture" means this Indenture, as amended or supplemented
from time to time in accordance with the terms hereof.

                  "Independent Financial Advisor" means a firm (i) which does
not, and whose directors, officers and employees or Affiliates do not, have a
direct or indirect financial interest in the Company and (ii) which, in the
judgment of the Board of Directors of the Company, is otherwise independent and
qualified to perform the task for which it is to be engaged.

                  "Initial Notes" means, collectively, (i) the 12% Senior Notes
due 2006, Series A, of the Company issued on the Issue 


                                       12


Date and (ii) one or more series of 12% Senior Notes due 2006 that are issued
under this Indenture subsequent to the Issue Date pursuant to Section 2.02, in
each case for so long as such securities constitute Restricted Securities.

                  "Initial Purchasers" means BT Alex. Brown Incorporated and
Credit Suisse First Boston Corporation.

                  "interest" when used with respect to any Note means the amount
of all interest accruing on such Note, including any applicable defaulted
interest pursuant to Section 2.12 and any Liquidated Damages pursuant to the
Registration Rights Agreement.

                  "Interest Payment Date" means the stated maturity of an
installment of interest on the Notes.

                  "Interest Swap Obligations" means the obligations of any
Person pursuant to any arrangement with any other Person, whereby, directly or
indirectly, such Person is entitled to receive from time to time periodic
payments calculated by applying either a floating or a fixed rate of interest on
a stated notional amount in exchange for periodic payments made by such other
Person calculated by applying a fixed or a floating rate of interest on the same
notional amount and shall include, without limitation, interest rate swaps,
caps, floors, collars and similar agreements.

                  "Internal Revenue Code" means the Internal Revenue Code of
1986, as amended to the date hereof and from time to time hereafter.

                  "Investment" means, with respect to any Person, any direct or
indirect loan or other extension of credit (including, without limitation, a
guarantee) or capital contribution to (by means of any transfer of cash or other
property to others or any payment for property or services for the account or
use of others), or any purchase or acquisition by such Person of any Capital
Stock, bonds, notes, debentures or other securities or evidences of Indebtedness
issued by, any Person. "Investment" shall exclude extensions of trade credit by
the Company and its Restricted Subsidiaries on commercially reasonable terms in
accordance with normal trade practices of the Company or such Restricted
Subsidiary, as the case may be. For the purposes of Section 4.10, (i)
"Investment" shall include and be valued at the fair market value of the net
assets of any Restricted Subsidiary at the time that such Restricted Subsidiary
is designated an Unrestricted Subsidiary and shall exclude the fair market value
of the net assets of any Unrestricted Subsidiary at the time that such
Unrestricted Subsidiary is designated 


                                       13



a Restricted Subsidiary and (ii) the amount of any Investment (other than as
specified in clause (i) above) shall be the original cost of such Investment
plus the cost of all additional Investments by the Company or any of its
Restricted Subsidiaries, without any adjustments for increases or decreases in
value, or write-ups, write-downs or write-offs with respect to such Investment,
reduced by the payment of dividends, distributions, interest payments, or
repayments of loans or advances in connection with such Investment or any other
amounts received in respect of such Investment; provided that no such payment of
dividends, distributions, interest payments, or repayments of loans or advances
or receipt of any such other amounts shall reduce the amount of any Investment
if such payment of dividends, distributions, interest payments, or repayments of
loans or advances or receipt of any such amounts would be included in
Consolidated Net Income. If the Company or any Restricted Subsidiary of the
Company sells or otherwise disposes of any Common Stock of any direct or
indirect Restricted Subsidiary of the Company such that, after giving effect to
any such sale or disposition, it ceases to be a Subsidiary of the Company, the
Company shall be deemed to have made an Investment on the date of any such sale
or disposition equal to the fair market value of the Common Stock of such
Restricted Subsidiary not sold or disposed of.

                  "Issue Date" means August 4, 1998.

                  "Junior Subordinated Notes" means the Company's 10.5% Junior
Subordinated Notes due 2007 which may be issued in exchange for Senior
Exchangeable Preferred Stock.

                  "Legal Defeasance" has the meaning set forth in Section 8.01.

                  "Legal Holiday" has the meaning provided in Section 11.07.

                  "Lien" means any lien, mortgage, deed of trust, pledge,
security interest, charge or encumbrance of any kind (including any conditional
sale or other title retention agreement, any lease in the nature thereof and any
agreement to give any security interest).

                  "Liquidated Damages" shall have the meaning set forth in the
Registration Rights Agreement.

                  "Management Agreement" means the Management Services Agreement
that becomes effective upon the consummation of the Recapitalization Merger
among Bruckmann, Rosser, Sherrill & Co., Inc. and the Company, as in effect on
the Issue Date.


                                       14


                  "Maturity Date" means August 1, 2006.

                  "Moody's" means Moody's Investors Service, Inc. and its
successors.

                  "Net Cash Proceeds" means, with respect to any Asset Sale, the
proceeds in the form of cash or Cash Equivalents including payments in respect
of deferred payment obligations when received in the form of cash or Cash
Equivalents (other than the portion of any such deferred payment constituting
interest) received by the Company or any of its Restricted Subsidiaries from
such Asset Sale net of (a) reasonable out-of-pocket expenses and fees relating
to such Asset Sale (including, without limitation, legal, accounting and
investment banking fees and sales commissions), (b) taxes paid or payable after
taking into account any reduction in consolidated tax liability due to available
tax credits or deductions and any tax sharing arrangements, (c) repayment of
Indebtedness that is required to be repaid in connection with such Asset Sale
and (d) appropriate amounts to be provided by the Company or any Restricted
Subsidiary, as the case may be, as a reserve, in accordance with GAAP, against
any liabilities associated with such Asset Sale and retained by the Company or
any Restricted Subsidiary, as the case may be, after such Asset Sale, including,
without limitation, pension and other post-employment benefit liabilities,
liabilities related to environmental matters and liabilities under any
indemnification obligations associated with such Asset Sale.

                  "Net Proceeds Offer" has the meaning set forth in Section
4.15.

                  "Net Proceeds Offer Amount" has the meaning set forth in
Section 4.15.

                  "Net Proceeds Offer Payment Date" has the meaning set forth in
Section 4.15.

                  "Net Proceeds Offer Trigger Date" has the meaning set forth in
Section 4.15.

                  "New Credit Facility" means the Credit Agreement dated as of
the Issue Date, between the Company, the lenders party thereto in their
capacities as lenders thereunder, Bankers Trust Company, as Administrative
Agent, and Credit Suisse First Boston, as Syndication Agent, together with the
related documents thereto (including, without limitation, any guarantee
agreements and security documents), in each case as such agreements may be
amended (including any amendment and restatement thereof), supplemented or
otherwise modified from time to time, 


                                       15


including any agreement extending the maturity of, refinancing, replacing or
otherwise restructuring (including increasing the amount of available borrowings
thereunder or adding or deleting Restricted Subsidiaries of the Company as
additional borrowers or guarantors thereunder) all or any portion of the
Indebtedness under such agreement or any successor or replacement agreement and
whether by the same or any other agent, lender or group of lenders.

                  "Notes" means, collectively, the Initial Notes, the Private
Exchange Notes, if any, and the Exchange Notes, treated as a single class of
securities, as amended or supplemented from time to time in accordance with the
terms of this Indenture, that are issued pursuant to this Indenture.

                  "Obligations" means all obligations for principal, premium,
interest, penalties, fees, indemnifications, reimbursements, damages and other
liabilities payable under the documentation governing any Indebtedness.

                  "Offering Memorandum" means the confidential Offering
Memorandum dated July 28, 1998 of the Company relating to the offering of the
Notes.

                  "Officer" means, with respect to any Person, the Chairman of
the Board of Directors, any Vice Chairman of the Board of Directors, the Chief
Executive Officer, the President, any Vice President, the Chief Financial
Officer, the Treasurer, the Controller, or the Secretary of such Person, or any
other officer designated by the Board of Directors serving in a similar
capacity.

                  "Officers' Certificate" means, with respect to any Person, a
certificate signed by the Chief Executive Officer, the President or any Vice
President and the Chief Financial Officer or any Treasurer of such Person that
shall comply with applicable provisions of this Indenture.

                  "Opinion of Counsel" means a written opinion from legal
counsel who is reasonably acceptable to the Trustee complying with the
requirements of Sections 11.04 and 11.05, as they relate to the giving of an
Opinion of Counsel, and delivered to the Trustee.

                  "Paying Agent" has the meaning provided in Section 2.03.

                  "Permitted Holders" means the Principals and their Related
Parties.


                                       16




                  "Permitted Indebtedness" means, without duplication, each of
the following:

         (i) Indebtedness under the Notes issued in the offering and the
         Guarantees thereof;

         (ii) Indebtedness incurred pursuant to any Bank Credit Facility in an
         aggregate principal amount at any time outstanding not to exceed an
         amount equal to (x) $20 million plus (y) the greater of $30 million,
         less the amount of any required permanent repayments of Bank Credit
         Facilities made in accordance with Section 4.15 (which are accompanied
         by a corresponding permanent commitment reduction) or (ii) the
         Borrowing Base;

         (iii) other Indebtedness of the Company and its Restricted Subsidiaries
         outstanding on the Issue Date;

         (iv) Interest Swap Obligations of the Company covering Indebtedness of
         the Company or any of its Restricted Subsidiaries and Interest Swap
         Obligations of any Restricted Subsidiary of the Company covering
         Indebtedness of such Restricted Subsidiary; provided, however, that
         such Interest Swap Obligations are entered into to protect the Company
         and its Restricted Subsidiaries from fluctuations in interest rates on
         Indebtedness incurred in accordance with this Indenture to the extent
         the notional principal amount of such Interest Swap Obligation does not
         exceed the principal amount of the Indebtedness to which such Interest
         Swap Obligation relates;

         (v) Indebtedness under Currency Agreements; provided that in the case
         of Currency Agreements which relate to Indebtedness, such Currency
         Agreements do not increase the Indebtedness of the Company and its
         Restricted Subsidiaries outstanding other than as a result of
         fluctuations in foreign currency exchange rates or by reason of fees,
         indemnities and compensation payable thereunder;

         (vi) Indebtedness of a Restricted Subsidiary of the Company to the
         Company or to a Restricted Subsidiary of the Company, in each case
         subject to no Lien (other than a Lien in connection with a Bank Credit
         Facility) held by a Person other than the Company or a Restricted
         Subsidiary of the Company for so long as such Indebtedness is held by
         the Company or a Restricted Subsidiary of the Company; provided that if
         as of any date any Person other than the Company or a Restricted
         Subsidiary of the Company owns or holds any such Indebtedness or holds
         a Lien in respect of such Indebtedness (other than a Lien in connection
         with a 


                                       17


         Bank Credit Facility), such date shall be deemed the incurrence of
         Indebtedness not constituting Permitted Indebtedness by the issuer of
         such Indebtedness;

         (vii) Indebtedness of the Company to a Restricted Subsidiary of the
         Company for so long as such Indebtedness is held by a Restricted
         Subsidiary of the Company, in each case subject to no Lien (other than
         a Lien in connection with a Bank Credit Facility); provided that (a)
         any Indebtedness of the Company to any Restricted Subsidiary of the
         Company is unsecured and subordinated in right of payment, pursuant to
         a written agreement, to the Company's obligations under this Indenture
         and the Notes and (b) if as of any date any Person other than a
         Restricted Subsidiary of the Company owns or holds any such
         Indebtedness or any Person holds a Lien in respect of such Indebtedness
         (other than a Lien in connection with a Bank Credit Facility), such
         date shall be deemed the incurrence of Indebtedness not constituting
         Permitted Indebtedness by the Company;

         (viii) Indebtedness arising from the honoring by a bank or other
         financial institution of a check, draft or similar instrument
         inadvertently drawn against insufficient funds in the ordinary course
         of business; provided, however, that such Indebtedness is extinguished
         within five business days of incurrence;

         (ix) Indebtedness of the Company or any of its Restricted Subsidiaries
         represented by letters of credit for the account of the Company or such
         Restricted Subsidiary, as the case may be, in order to provide security
         for workers' compensation claims, payment obligations in connection
         with self-insurance or similar requirements in the ordinary course of
         business;

         (x) Refinancing Indebtedness;

         (xi) additional Indebtedness of the Company and its Restricted
         Subsidiaries in an aggregate principal amount not to exceed $5,000,000
         at any one time outstanding (which may, but need not be incurred under
         a Bank Credit Facility);

         (xii) Obligations in respect of performance and surety bonds and
         completion guarantees provided by the Company or any Restricted
         Subsidiary of the Company in the ordinary course of business, in
         accordance with customary industry practice, in amounts and for
         purposes customary in the Company's industry;


                                       18



         (xiii) Indebtedness arising from agreements of the Company or a
         Restricted Subsidiary of the Company providing for adjustment of
         purchase price, earn out or similar obligations, in each case, incurred
         or assumed in connection with the disposition of any business, assets
         or a Restricted Subsidiary of the Company or any of its Restricted
         Subsidiaries, other than guarantees of Indebtedness incurred by any
         Person acquiring all or any portion of such business, assets or
         Restricted Subsidiary for the purpose of financing such acquisition;
         provided that the maximum assumable liability in respect of all such
         Indebtedness shall at no time exceed the gross proceeds actually
         received by the Company and the Restricted Subsidiaries in connection
         with such disposition;

         (xiv) Guarantees of Indebtedness permitted to be incurred under this
         Indenture and guarantees of third-party loans to employees or officers
         of the Company or its Restricted Subsidiaries permitted by clause (vii)
         of the definition of "Permitted Investments;"

         (xv) Capitalized Lease Obligations and Purchase Money Obligations of
         the Company or any of its Restricted Subsidiaries in an aggregate
         principal amount not to exceed $5,000,000 at any one time outstanding;

         (xvi) Indebtedness of the Company or any of its Restricted Subsidiaries
         that is subordinate to the Notes and is incurred in order to repurchase
         Capital Stock of the Company from employees, officers or directors of
         the Company or any of its Subsidiaries upon the death, disability or
         termination of employment of such employees, officers or directors or
         as otherwise required by existing employment agreements in an aggregate
         principal amount not to exceed $1,000,000 in any calendar year; and

         (xvii) Indebtedness incurred as a result of accrued and unpaid interest
         being added to the principal amount of the Junior Subordinated Notes in
         accordance with the terms of such Junior Subordinated Notes; provided
         that such interest is not payable in cash prior to the maturity of the
         Notes.

                  "Permitted Investments" means (i) Investments by the Company
or any Restricted Subsidiary of the Company in any Person that is or will become
immediately after such Investment a Restricted Subsidiary of the Company or that
will merge or consolidate into the Company or a Restricted Subsidiary of the
Company; (ii) Investments in the Company by any Restricted Subsidiary of the
Company; provided that any Indebtedness evidencing 


                                       19



such Investment is unsecured and subordinated, pursuant to a written agreement,
to the Company's obligations under the Notes and this Indenture; (iii)
investments in cash and Cash Equivalents; (iv) Currency Agreements and Interest
Swap Obligations entered into in the ordinary course of the Company's or its
Restricted Subsidiaries' businesses and otherwise in compliance with this
Indenture; (v) Investments in securities of trade creditors or customers
received pursuant to any plan of reorganization or similar arrangement upon the
bankruptcy or insolvency of such trade creditors or customers; (vi) Investments
made by the Company or its Restricted Subsidiaries as a result of consideration
received in connection with an Asset Sale made in compliance with Section 4.15;
(vii) loans and advances to, or guarantees of third-party loans to, employees
and officers of the Company and its Restricted Subsidiaries for relocation
expenses and purchasing Capital Stock of the Company not in excess of $2.0
million at any one time outstanding; (viii) Investments the payment for which
consists exclusively of Qualified Capital Stock of the Company; (ix) guarantees
of Indebtedness permitted to be incurred under this Indenture; and (x)
additional Investments not to exceed $2.5 million at any time outstanding.

                  "Permitted Liens" means the following types of Liens:

         (i) Liens for taxes, assessments or governmental charges or claims
         either (a) not delinquent or (b) contested in good faith by appropriate
         proceedings and as to which the Company or its Restricted Subsidiaries
         shall have set aside on its books such reserves as may be required
         pursuant to GAAP;

         (ii) statutory Liens of landlords or of mortgagees of landlords and
         Liens of carriers, warehousemen, mechanics, suppliers, materialmen,
         repairmen and other Liens imposed by law incurred in the ordinary
         course of business for sums not yet delinquent or being contested in
         good faith, if such reserve or other appropriate provision, if any, as
         shall be required by GAAP shall have been made in respect thereof;

         (iii) Liens incurred or deposits made in the ordinary course of
         business in connection with workers' compensation, unemployment
         insurance and other types of social security, including any Lien
         securing letters of credit issued in the ordinary course of business
         consistent with past practice in connection therewith, or to secure the
         performance of tenders, statutory obligations, surety and appeal bonds,
         bids, leases, government contracts, performance and return-of-money
         bonds and other similar obligations 


                                       20



         (exclusive of obligations for the payment of borrowed money);

         (iv) judgment Liens not giving rise to an Event of Default;

         (v) easements, rights-of-way, zoning restrictions and other similar
         charges or encumbrances in respect of real property not interfering in
         any material respect with the ordinary conduct of the business of the
         Company or any of its Restricted Subsidiaries;

         (vi) any interest or title of a lessor under any Capitalized Lease
         Obligation; provided that such Liens do not extend to any property or
         assets which is not leased property subject to such Capitalized Lease
         Obligation or other property subject to a Permitted Lien held by the
         lienholder of such Capitalized Lease Obligation;

         (vii) purchase money Liens to finance property or assets (including the
         cost of construction) of the Company or any Restricted Subsidiary of
         the Company acquired in the ordinary course of business; provided,
         however, that (A) the related purchase money Indebtedness shall not
         exceed the cost of such property or assets (including the cost of
         construction) and shall not be secured by any property or assets of the
         Company or any Restricted Subsidiary of the Company other than the
         property and assets so acquired or constructed and (B) the Lien
         securing such Indebtedness shall be created within 90 days of such
         acquisition or construction;

         (viii) Liens upon specific items of inventory or other goods and
         proceeds of any Person securing such Person's obligations in respect of
         bankers' acceptances issued or created for the account of such Person
         to facilitate the purchase, shipment or storage of such inventory or
         other goods or construction;

         (ix) Liens securing reimbursement obligations with respect to
         commercial letters of credit which encumber documents and other
         property relating to such letters of credit and products and proceeds
         thereof;

         (x) Liens encumbering deposits made to secure obligations arising from
         statutory, regulatory, contractual, or warranty requirements of the
         Company or any of its Restricted Subsidiaries, including rights of
         offset and set-off;


                                       21



         (xi) Liens securing Interest Swap Obligations which Interest Swap
         Obligations relate to Indebtedness that is otherwise permitted under
         this Indenture;

         (xii) Liens securing Indebtedness under Currency Agreements;

         (xiii) Liens securing Acquired Indebtedness incurred in accordance with
         Section 4.12; provided that (A) such Liens secured such Acquired
         Indebtedness at the time of and prior to the incurrence of such
         Acquired Indebtedness by the Company or a Restricted Subsidiary of the
         Company and were not granted in connection with, or in anticipation of,
         the incurrence of such Acquired Indebtedness by the Company or a
         Restricted Subsidiary of the Company and (B) such Liens do not extend
         to or cover any property or assets of the Company or of any of its
         Restricted Subsidiaries other than the property or assets that secured
         the Acquired Indebtedness prior to the time such Indebtedness became
         Acquired Indebtedness of the Company or a Restricted Subsidiary of the
         Company and are no more favorable to the lienholders than those
         securing the Acquired Indebtedness prior to the incurrence of such
         Acquired Indebtedness by the Company or a Restricted Subsidiary of the
         Company;

         (xiv) Liens securing Indebtedness under any Bank Credit Facility;

         (xv) Liens arising out of consignment or similar arrangements for the
         sale of goods in the ordinary course of business;

         (xvi) leases or subleases granted to others that do not materially
         interfere with the ordinary course of business of the Company and its
         Restricted Subsidiaries;

         (xvii) Liens arising from filing Uniform Commercial Code financing
         statements regarding leases;

         (xviii) Liens in favor of customs and revenue authorities arising as a
         matter of law to secure payment of custom duties in connection with the
         importation of goods;

         (xix) Liens securing Indebtedness under the HSI Note; and

         (xx) Liens incurred in the ordinary course of business of the Company
         or any Restricted Subsidiary of the 


                                       22



          Company with respect to obligations that do not exceed $2.5 million at
          any one time outstanding.

                  "Person" means an individual, partnership, corporation,
unincorporated organization, trust or joint venture, or a governmental agency or
political subdivision thereof.

                  "Physical Notes" has the meaning provided in Section 2.01.

                  "plan of liquidation" means, with respect to any Person, a
plan (including by operation of law) that provides for, contemplates or the
effectuation of which is preceded or accompanied by (whether or not
substantially contemporaneously) (a) the sale, lease, conveyance or other
disposition of all or substantially all of the assets of such Person otherwise
than as an entirety or substantially as an entirety and (b) the distribution of
all or substantially all of the proceeds of such sale, lease, conveyance or
other disposition and all or substantially all of the remaining assets of such
Person to holders of Capital Stock of such Person.

                  "Preferred Stock" of any Person means any Capital Stock of
such Person that has preferential rights to any other Capital Stock of such
Person with respect to dividends or redemptions or upon liquidation.

                  "principal" of any Indebtedness (including the Notes) means
the principal amount of such Indebtedness plus the premium, if any, on such
Indebtedness.

                  "Principal" means (i) Bruckmann, Rosser, Sherrill & Co., Inc.,
a Delaware corporation, and any of its Affiliates, and (ii) Messrs. Bruckmann,
Rosser, Sherrill and Edwards, each of whom is a principal on the Issue Date of
Bruckmann, Rosser, Sherrill & Co., Inc.

                  "Private Exchange Notes" has the meaning set forth in the 
Registration Rights Agreement.

                  "Private Placement Legend" means the legend initially set
forth on the Notes in the form set forth in Section 2.15.

                  "pro forma" means, with respect to any calculation made or
required to be made pursuant to the terms of this Indenture, a calculation in
accordance with Article 11 of Regulation S-X under the Securities Act, as
determined by the Board of Directors of the Company in consultation with its
independent public accountants.


                                       23



                  "Pro Forma Basis" has the meaning given to such term in the 
Offering Memorandum.

                  "Public Equity Offering" means an underwritten public offering
of Qualified Capital Stock of the Company pursuant to a registration statement
filed with the Commission in accordance with the Securities Act.

                  "Purchase Money Obligations" of any Person means any
obligations of such Person or any of its Subsidiaries to any seller or any other
person incurred or assumed in connection with the purchase, installation,
construction or improvement of real or personal property to be used in the
business of such Person or any of its Subsidiaries within 180 days of such
purchase, installation, construction or improvement.

                  "Qualified Capital Stock" means any Capital Stock that is not 
Disqualified Capital Stock.

                  "Qualified Institutional Buyer" or "QIB" shall have the
meaning specified in Rule 144A under the Securities Act.

                  "Recapitalization" means the recapitalization of Penhall
International, Inc., a California corporation, as contemplated by the Offering
Memorandum.

                  "Recapitalization Merger" means the merger of the Company with
and into Phoenix Concrete Cutting, Inc., an Arizona corporation, with Phoenix
Concrete Cutting, Inc. continuing as the surviving corporation.

                  "Record Date" means the Record Date specified in the Notes.

                  "Redemption Date," when used with respect to any Note to be
redeemed, means the date fixed for such redemption pursuant to this Indenture
and the Notes.

                  "redemption price," when used with respect to any Note to be
redeemed, means the price fixed for such redemption, including principal and
premium, if any, pursuant to this Indenture and the Notes.

                  "Reference Date" has the meaning set forth in Section 4.10.

                  "Refinance" means, in respect of any security or Indebtedness,
to refinance, extend, renew, refund, repay, prepay, redeem, defease or retire,
or to issue a security or Indebtedness in exchange or replacement for, such
security or Indebtedness 


                                       24



in whole or in part. "Refinanced" and "Refinancing" shall have correlative
meanings.

                  "Refinancing Indebtedness" means any Refinancing by the
Company or any Restricted Subsidiary of the Company of Indebtedness incurred in
accordance with Section 4.12 (other than pursuant to clause (ii), (iv), (v),
(vi), (vii), (viii), (ix), (xii), (xiii), (xiv) or (xvi) of the definition of
Permitted Indebtedness), in each case that does not (1) result in an increase in
the aggregate principal amount of Indebtedness of such Person as of the date of
such proposed Refinancing (plus the amount of any premium required to be paid
under the terms of the instrument governing such Indebtedness and plus the
amount of reasonable expenses incurred by the Company in connection with such
Refinancing) or (2) create Indebtedness with (A) a Weighted Average Life to
Maturity that is less than the Weighted Average Life to Maturity of the
Indebtedness being Refinanced or (B) a final maturity earlier than the final
maturity of the Indebtedness being Refinanced; provided that (x) if such
Indebtedness being Refinanced is Indebtedness solely of the Company, then such
Refinancing Indebtedness shall be Indebtedness solely of the Company and (y) if
such Indebtedness being Refinanced is subordinate or junior to the Notes, then
such Refinancing Indebtedness shall be subordinate to the Notes at least to the
same extent and in the same manner as the Indebtedness being Refinanced.

                  "Registrar" has the meaning provided in Section 2.03.

                  "Registration Rights Agreement" means the Registration Rights 
Agreement dated as of the Issue Date among the Company, the Guarantors and the
Initial Purchasers.

                  "Regulation S" means Regulation S under the Securities Act.

                  "Related Party" means, with respect to any Principal, (A) any
spouse or immediate family member (in the case of an individual) of such
Principal or (B) a trust, corporation, partnership or other entity, the
beneficiaries, stockholders, partners or Persons beneficially holding a 66 2/3%
or more controlling interest of which consist of such Principal and/or such
other Persons referred to in the immediately preceding clause (A).

                  "Replacement Assets" means assets of a kind used or usable in
the business of the Company and its Restricted Subsidiaries as conducted on the
date of the relevant Asset Sale.


                                       25



                  "Representative" means the indenture trustee or other trustee,
agent or representative in respect of any Designated Senior Debt; provided that
if, and for so long as, any Designated Senior Debt lacks such a representative,
then the Representative for such Designated Senior Debt shall at all times
constitute the holders of a majority in outstanding principal amount of such
Designated Senior Debt in respect of any Designated Senior Debt.

                  "Restricted Payment" shall have the meaning set forth in 
Section 4.10.

                  "Restricted Security" has the meaning assigned to such term in
Rule 144(a)(3) under the Securities Act; provided, however, that the Trustee
shall be entitled to request and conclusively rely on an Opinion of Counsel with
respect to whether any Note constitutes a Restricted Security.

                  "Restricted Subsidiary" of any Person means any Subsidiary of
such Person which at the time of determination is not an Unrestricted
Subsidiary.

                  "Revolving Credit Facility" means one or more revolving credit
facilities under a Bank Credit Facility.

                  "Rule 144A" means Rule 144A under the Securities Act.

                  "Sale and Leaseback Transaction" means any direct or indirect
arrangement with any Person or to which any such Person is a party, providing
for the leasing to the Company or a Restricted Subsidiary of any property,
whether owned by the Company or any Restricted Subsidiary at the Issue Date or
later acquired, which has been or is to be sold or transferred by the Company or
such Restricted Subsidiary to such Person or to any other Person from whom funds
have been or are to be advanced by such Person on the security of such Property.

                  "S&P" means Standard & Poor's Rating Services, a division of
The McGraw Hill Companies, Inc., and its successors.

                  "Securities Act" means the Securities Act of 1933, as amended,
and the rules and regulations of the Commission promulgated thereunder.

                  "Senior Exchangeable Preferred Stock" means the Company's 
10.5% Senior Exchangeable Preferred Stock, par value $.01 per share.


                                       26



                  "Significant Subsidiary" shall have the meaning set forth in
Rule 1.02(w) of Regulation S-X under the Securities Act.

                  "Stockholders' Agreement" means that Securities Holders
Agreement, dated the Issue Date, among the Company and the stockholders of the
Company.

                  "Subsidiary", with respect to any Person, means (i) any
corporation of which the outstanding Capital Stock having at least a majority of
the votes entitled to be cast in the election of directors under ordinary
circumstances shall at the time be owned, directly or indirectly, by such Person
or (ii) any other Person of which at least a majority of the voting interest
under ordinary circumstances is at the time, directly or indirectly, owned by
such Person.

                  "Surviving Entity" shall have the meaning set forth in Section
5.01.

                  "TIA" means the Trust Indenture Act of 1939 (15 U.S.C. ss.ss. 
77aaa-77bbbb), as amended, as in effect on the date of this Indenture, except as
otherwise provided in Section 9.03.

                  "Trust Officer" means any officer or assistant officer of the
Trustee assigned by the Trustee to administer this Indenture, or in the case of
a successor trustee, an officer assigned to the department, division or group
performing the corporate trust work of such successor and assigned to administer
this Indenture.

                  "Trustee" means the party named as such in this Indenture
until a successor replaces it in accordance with the provisions of this
Indenture and thereafter means such successor.

                  "Unrestricted Subsidiary" of any Person means (i) any
Subsidiary of such Person that at the time of determination shall be or continue
to be designated an Unrestricted Subsidiary by the Board of Directors of such
Person in the manner provided below and (ii) any Subsidiary of an Unrestricted
Subsidiary. The Board of Directors may designate any Subsidiary (including any
newly acquired or newly formed Subsidiary) to be an Unrestricted Subsidiary
unless such Subsidiary owns any Capital Stock of, or owns or holds any Lien on
any property of, the Company or any Restricted Subsidiary of the Company;
provided that (x) the Company certifies to the Trustee that such designation
complies with Section 4.10 and (y) each Subsidiary to be so designated and each
of its Subsidiaries has not at the time


                                       27



of designation, and does not thereafter, create, incur, issue, assume, guarantee
or otherwise become directly or indirectly liable with respect to any
Indebtedness pursuant to which the lender has recourse to any of the assets of
the Company or any of its Restricted Subsidiaries. The Board of Directors may
designate any Unrestricted Subsidiary to be a Restricted Subsidiary only if (x)
immediately after giving effect to such designation, the Company is able to
incur at least $1.00 of additional Indebtedness (other than Permitted
Indebtedness) in compliance with Section 4.12 and (y) immediately before and
immediately after giving effect to such designation, no Default or Event of
Default shall have occurred and be continuing. Any such designation by the Board
of Directors shall be evidenced to the Trustee by promptly filing with the
Trustee a copy of the Board Resolution giving effect to such designation and an
officers' certificate certifying that such designation complied with the
foregoing provisions.

                  "U.S. Government Obligations" mean direct obligations of, and 
obligations guaranteed by, the United States of America for the payment of which
the full faith and credit of the United States of America is pledged.

                  "U.S. Legal Tender" means such coin or currency of the United 
States of America as at the time of payment shall be legal tender for the
payment of public and private debts.

                  "Weighted Average Life to Maturity" means, when applied to any
Indebtedness at any date, the number of years obtained by dividing (a) the then
outstanding aggregate principal amount of such Indebtedness into (b) the sum of
the total of the products obtained by multiplying (i) the amount of each then
remaining installment, sinking fund, serial maturity or other required payment
of principal, including payment at final maturity, in respect thereof, by (ii)
the number of years (calculated to the nearest one-twelfth) which will elapse
between such date and the making of such payment.

                  "Wholly Owned Restricted Subsidiary" of any Person means any
Restricted Subsidiary of such Person of which all the outstanding voting
securities (other than in the case of a foreign Restricted Subsidiary,
directors' qualifying shares or an immaterial amount of shares required to be
owned by other Persons pursuant to applicable law) are owned by such Person or
any Wholly Owned Restricted Subsidiary of such Person.

                  SECTION 1.02. Incorporation by Reference of TIA.

                  Whenever this Indenture refers to a provision of the TIA, such
provision is incorporated by reference in, and made a 


                                       28



part of, this Indenture. The following TIA terms used in this Indenture have the
following meanings:

                  "indenture securities" means the Notes.

                  "indenture security holder" means a Holder.

                  "indenture to be qualified" means this Indenture.

                  "indenture trustee" or "institutional trustee" means the 
Trustee.

                  "obligor" on the Indenture securities means the Company or any
other obligor on the Notes.

                  All other TIA terms used in this Indenture that are defined by
the TIA, defined by TIA reference to another statute or defined by Commission
rule and not otherwise defined herein have the meanings assigned to them
therein.

                  SECTION 1.03. Rules of Construction.

                  Unless the context otherwise requires:

                  (1) a term has the meaning assigned to it;

                  (2) an accounting term not otherwise defined has the meaning
         assigned to it in accordance with GAAP of any date of determination;

                  (3) "or" is not exclusive;

                  (4) words in the singular include the plural, and words in the
         plural include the singular;

                  (5) "herein," "hereof" and other words of similar import refer
         to this Indenture as a whole and not to any particular Article, Section
         or other subdivision; and

                  (6) any reference to a statute, law or regulation means that
         statute, law or regulation as amended and in effect from time to time
         and includes any successor statute, law or regulation; provided,
         however, that any reference to the Bankruptcy Law shall mean the
         Bankruptcy Law as applicable to the relevant case.


                                       29



                                   ARTICLE TWO

                                    THE NOTES


                  SECTION 2.01. Form and Dating.

                  The Initial Notes and the Trustee's certificate of
authentication relating thereto shall be substantially in the form of Exhibit A.
The Exchange Notes and the Trustee's certificate of authentication relating
thereto shall be substantially in the form of Exhibit B. The Notes may have
notations, legends or endorsements required by law, stock exchange rule or
depository rule or usage. The Company and the Trustee shall approve the form of
the Notes and any notation, legend or endorsement on them. If required, the
Notes may bear the appropriate legend regarding any original issue discount for
federal income tax purposes. Each Note shall be dated the date of its issuance
and shall show the date of its authentication. Each Note shall have an executed
Guarantee from each of the Guarantors endorsed thereon substantially in the form
of Exhibit E hereto.

                  The terms and provisions contained in the Notes, annexed
hereto as Exhibits A and B, shall constitute, and are hereby expressly made, a
part of this Indenture and, to the extent applicable, the Company, the
Guarantors and the Trustee, by their execution and delivery of this Indenture,
expressly agree to such terms and provisions and to be bound thereby.

                  Notes offered and sold in reliance on Rule 144A and Notes
offered and sold in reliance on Regulation S shall be issued initially in the
form of one or more permanent global Notes in registered form, substantially in
the form set forth in Exhibit A (the "Global Note"), deposited with the Trustee,
as custodian for the Depository, duly executed by the Company (and having an
executed Guarantee from each of the Guarantors endorsed thereon) and
authenticated by the Trustee as hereinafter provided and shall bear all the
legends set forth in Section 2.15. The aggregate principal amount of the Global
Note may from time to time be increased or decreased by adjustments made on the
records of the Trustee, as custodian for the Depository, as hereinafter
provided.

                  Notes issued in exchange for interests in a Global Note
pursuant to Section 2.16 may be issued in the form of permanent certificated
Notes in registered form in substantially the form set forth in Exhibit A (the
"Physical Notes") and shall bear the first legend set forth in Section 2.15. All
Notes offered and sold in reliance on Regulation S shall remain 


                                       30



in the form of a Global Note until the consummation of the Exchange Offer
pursuant to the Registration Rights Agreement; provided, however, that all of
the time periods specified in the Registration Rights Agreement to be complied
with by the Company have been so complied with.

                  SECTION 2.02. Execution and Authentication;
                                Aggregate Principal Amount.

                  Two Officers, or an Officer and an Assistant Secretary, shall
sign, or one Officer or an Assistant Secretary (each of whom shall, in each
case, have been duly authorized by all requisite corporate actions) shall attest
to, the Notes for the Company, and the Guarantees for the Guarantors, by manual
or facsimile signature.

                  If an Officer or Assistant Secretary whose signature is on a
Note or a Guarantee, as the case may be, was an Officer or Assistant Secretary
at the time of such execution but no longer holds that office or position at the
time the Trustee authenticates the Note, the Note shall nevertheless be valid.

                  A Note shall not be valid until an authorized signatory of the
Trustee manually signs the certificate of authentication on the Note. The
signature shall be conclusive evidence that the Note has been authenticated
under this Indenture.

                  The Trustee shall authenticate (i) Initial Notes for original
issue in the aggregate principal amount not to exceed $150,000,000 in one or
more series, provided that the aggregate principal amount of Initial Notes on
the Issue Date shall not exceed $100,000,000, and further provided that the
Company complies with Section 4.12 of this Indenture, (ii) Private Exchange
Notes from time to time only in exchange for a like principal amount of Initial
Notes and (iii) Exchange Notes from time to time only in exchange for (A) a like
principal amount of Initial Notes or (B) a like principal amount of Private
Exchange Notes, in each case upon a written order of the Company in the form of
an Officers' Certificate of the Company. Each such written order shall specify
the amount of Notes to be authenticated and the date on which the Notes are to
be authenticated, whether the Notes are to be Initial Notes, Private Exchange
Notes or Exchange Notes and whether (subject to Section 2.01) the Notes are to
be issued as Physical Notes or Global Notes or such other information as the
Trustee may reasonably request. In addition, with respect to authentication
pursuant to clause (iii) of the first sentence of this paragraph, the first such
written order from the Company shall be accompanied by an Opinion of Counsel of
the Company in a form reasonably satisfactory to the Trustee stating that the
issuance 


                                       31



of the Exchange Notes does not give rise to an Event of Default, complies with
this Indenture and has been duly authorized by the Company. The aggregate
principal amount of Notes outstanding at any time may not exceed $150,000,000,
except as provided in Sections 2.07 and 2.08.

                  In the event that the Company shall issue and the Trustee
shall authenticate any Notes issued under this Indenture subsequent to the Issue
Date pursuant to clauses (i) and (iii) of the first sentence of the immediately
preceding paragraph, the Company shall use its reasonable efforts to obtain the
same "CUSIP" number for such Notes as is printed on the Notes outstanding at
such time; provided, however, that if any series of Notes issued under this
Indenture subsequent to the Issue Date is determined, pursuant to an Opinion of
Counsel of the Company in a form satisfactory to the Trustee to be a different
class of security than the Notes outstanding at such time for federal income tax
purposes, the Company may obtain a "CUSIP" number for such Notes that is
different than the "CUSIP" number printed on the Notes then outstanding.

                  Notwithstanding the foregoing, all Notes issued under this
Indenture shall vote and consent together on all matters (as to which any of
such Notes may vote or consent) as one class and no series of Notes will have
the right to vote or consent as a separate class on any matter.

                  The Trustee may appoint an authenticating agent (the
"Authenticating Agent") reasonably acceptable to the Company to authenticate
Notes. Unless otherwise provided in the appointment, an Authenticating Agent may
authenticate Notes whenever the Trustee may do so. Each reference in this
Indenture to authentication by the Trustee includes authentication by such
Authenticating Agent. An Authenticating Agent has the same rights as an Agent to
deal with the Company or with any Affiliate of the Company.

                  The Notes shall be issuable in fully registered form only,
without coupons, in denominations of $1,000 and any integral multiple thereof.

                  SECTION 2.03. Registrar and Paying Agent.

                  The Company shall maintain an office or agency (which shall be
located in the Borough of Manhattan in the City of New York, State of New York)
where (a) Notes may be presented or surrendered for registration of transfer or
for exchange ("Registrar"), (b) Notes may be presented or surrendered for
payment ("Paying Agent") and (c) notices and demands to or upon the Company in
respect of the Notes and this Indenture may be 


                                       32



served. The office or agency in respect of clauses (a) and (b) shall be the
Trustee, 114 West 47th Street, New York, New York 10036, Attn: Corporate Trust
Administration, and the office or agency in respect of clause (c) shall be the
Trustee, 114 West 47th Street, New York, New York 10036, Attn: Corporate Trust
Administration, unless in either case the Company shall designate and maintain
some other office or agency for one or more of such purposes. The Registrar
shall keep a register of the Notes and of their transfer and exchange. The
Company, upon prior written notice to the Trustee, may have one or more
co-Registrars and one or more additional paying agents acceptable to the
Trustee. The term "Paying Agent" includes any additional Paying Agent. The
Company may act as its own Paying Agent, except that for the purposes of
payments on the Notes pursuant to Sections 4.14 and 4.15, neither the Company
nor any Affiliate of the Company may act as Paying Agent.

                  The Company shall enter into an appropriate agency agreement
with any Agent not a party to this Indenture, which agreement shall incorporate
the provisions of the TIA and implement the provisions of this Indenture that
relate to such Agent. The Company shall notify the Trustee, in advance, of the
name and address of any such Agent. If the Company fails to maintain a Registrar
or Paying Agent, or fails to give the foregoing notice, the Trustee shall act as
such and shall be entitled to appropriate compensation in accordance with
Section 7.07.

                  The Company initially appoints the Trustee as Registrar,
Paying Agent and agent for service of demands and notices in connection with the
Notes, until such time as the Trustee has resigned or a successor has been
appointed. Any of the Registrar, the Paying Agent or any other agent may resign
upon 30 days' notice to the Company.

                 SECTION 2.04. Paying Agent To Hold Assets in Trust.

                  The Company shall require each Paying Agent other than the
Trustee to agree in writing that such Paying Agent shall hold in trust for the
benefit of the Holders or the Trustee all assets held by the Paying Agent for
the payment of principal of, premium, if any, or interest on, the Notes (whether
such assets have been distributed to it by the Company or any other obligor on
the Notes), and the Company and the Paying Agent shall notify the Trustee of any
Default by the Company (or any other obligor on the Notes) in making any such
payment. The Company at any time may require a Paying Agent to distribute all
assets held by it to the Trustee and account for any assets disbursed and the
Trustee may at any time during the continuance of any payment Default, upon
written request to a 


                                       33



Paying Agent, require such Paying Agent to distribute all assets held by it to
the Trustee and to account for any assets distributed. Upon distribution to the
Trustee of all assets that shall have been delivered by the Company to the
Paying Agent, the Paying Agent shall have no further liability for such assets.

                  SECTION 2.05. Holder Lists.

                  The Trustee shall preserve in as current a form as is
reasonably practicable the most recent list available to it of the names and
addresses of the Holders. If the Trustee is not the Registrar, the Company shall
furnish or cause the Registrar to furnish to the Trustee five (5) Business Days
before each Interest Payment Date and at such other times as the Trustee may
request in writing a list as of such date and in such form as the Trustee may
require of the names and addresses of the Holders, which list may be
conclusively relied upon by the Trustee.

                  SECTION 2.06. Transfer and Exchange.

                  When Notes are presented to the Registrar or a co-Registrar
with a request to register the transfer of such Notes or to exchange such Notes
for an equal principal amount of Notes or other authorized denominations, the
Registrar or co-Registrar shall register the transfer or make the exchange as
requested if its requirements for such transaction are met; provided, however,
that the Notes presented or surrendered for registration of transfer or exchange
shall be duly endorsed or accompanied by a written instrument of transfer in
form satisfactory to the Company, the Trustee and the Registrar or co-Registrar,
duly executed by the Holder thereof or his attorney duly authorized in writing.
To permit registration of transfers and exchanges, the Company shall execute and
the Trustee shall authenticate Notes (and each of the Guarantors shall execute a
Guarantee thereon). No service charge shall be made for any registration of
transfer or exchange, but the Company may require payment of a sum sufficient to
cover any transfer tax, fee or similar governmental charge payable in connection
therewith (other than any such transfer taxes or similar governmental charge
payable upon exchanges or transfers pursuant to Sections 2.10, 3.04, 4.14, 4.15
or 9.05, in which event the Company shall be responsible for the payment of such
taxes).

                  The Registrar or co-Registrar shall not be required to
register the transfer of or exchange of any Note (i) during a period beginning
at the opening of business 15 days before the mailing of a notice of redemption
of Notes and ending at the close of business on the day of such mailing,(ii)
selected 


                                       34



for redemption in whole or in part pursuant to Article Three, except the
unredeemed portion of any Note being redeemed in part or (iii) between a Record
Date and the next succeeding Interest Payment Date.

                  Any Holder of a beneficial interest in a Global Note shall, by
acceptance of such Global Note, agree that transfers of beneficial interests in
such Global Notes may be effected only through a book entry system maintained by
the Holder of such Global Note (or its agent), and that ownership of a
beneficial interest in the Note shall be required to be reflected in a book
entry system.

                  SECTION 2.07. Replacement Notes.

                  If a mutilated Note is surrendered to the Trustee or if the
Holder of a Note claims that the Note has been lost, destroyed or wrongfully
taken, the Company shall issue and the Trustee shall authenticate a replacement
Note and each of the Guarantors shall execute a Guarantee thereon if the
Trustee's requirements are met. If required by the Trustee or the Company, such
Holder must provide satisfactory evidence of such loss, destruction or taking,
and an indemnity bond or other indemnity of reasonable tenor, sufficient in the
reasonable judgment of the Company, the Guarantors and the Trustee, to protect
the Company, the Guarantors, the Trustee or any Agent from any loss which any of
them may suffer if a Note is replaced. Every replacement Note shall constitute
an obligation of the Company and the Guarantors. The Company and the Trustee
each may charge such Holder for its expenses in replacing such Note.

                  SECTION 2.08. Outstanding Notes.

                  Notes outstanding at any time are all the Notes that have been
authenticated by the Trustee except those canceled by it, those delivered to it
for cancellation and those described in this Section as not outstanding. Subject
to the provisions of Section 2.09, a Note does not cease to be outstanding
because the Company or any of its Affiliates holds the Note.

                  If a Note is replaced pursuant to Section 2.07 (other than a
mutilated Note surrendered for replacement), it ceases to be outstanding unless
the Trustee receives proof satisfactory to it that the replaced Note is held by
a bona fide purchaser. A mutilated Note ceases to be outstanding upon surrender
of such Note and replacement thereof pursuant to Section 2.07.

                  If on a Redemption Date or the Maturity Date the Paying Agent
holds U.S. Legal Tender or U.S. Government Obligations 


                                       35



sufficient to pay all of the principal, premium, if any, and interest due on the
Notes payable on that date and is not prohibited from paying such money to the
Holders thereof pursuant to the terms of this Indenture, then on and after that
date such Notes shall be deemed not to be outstanding and interest on them shall
cease to accrue.

                  SECTION 2.09. Treasury Notes.

                  In determining whether the Holders of the required principal
amount of Notes have concurred in any direction, waiver, consent or notice,
Notes owned by the Company or an Affiliate of the Company shall be considered as
though they are not outstanding, except that for the purposes of determining
whether the Trustee shall be protected in relying on any such direction, waiver
or consent, only Notes which a Trust Officer of the Trustee actually knows are
so owned shall be so considered. The Company shall notify the Trustee, in
writing, when it or, to its knowledge, any of its Affiliates repurchases or
otherwise acquires Notes, of the aggregate principal amount of such Notes so
repurchased or otherwise acquired and such other information as the Trustee may
request and the Trustee shall be entitled to rely thereon.

                  SECTION 2.10. Temporary Notes.

                  Until definitive Notes are ready for delivery, the Company may
prepare and the Trustee shall authenticate temporary Notes and the Guarantors
shall prepare temporary Guarantees thereon upon receipt of a written order of
the Company in the form of an Officers' Certificate. The Officers' Certificate
shall specify the amount of temporary Notes to be authenticated and the date on
which the temporary Notes are to be authenticated. Temporary Notes shall be
substantially in the form of definitive Notes but may have variations that the
Company considers appropriate for temporary Notes and so indicate in the
Officers' Certificate. Without unreasonable delay, the Company shall prepare and
execute, the Trustee shall authenticate, and the Guarantors shall execute
Guarantees on, upon receipt of a written order of the Company pursuant to
Section 2.02, definitive Notes in exchange for temporary Notes.

                  SECTION 2.11. Cancellation.

                  The Company at any time may deliver Notes to the Trustee for
cancellation. The Registrar and the Paying Agent shall forward to the Trustee
any Notes surrendered to them for transfer, exchange or payment. The Trustee, or
at the direction of the Trustee, the Registrar or the Paying Agent, and no one
else, shall cancel and, at the written direction of the 


                                       36



Company, shall dispose, in its customary manner, of all Notes surrendered for
transfer, exchange, payment or cancellation. Subject to Section 2.07, the
Company may not issue new Notes to replace Notes that it has paid or delivered
to the Trustee for cancellation. If the Company shall acquire any of the Notes,
such acquisition shall not operate as a redemption or satisfaction of the
Indebtedness represented by such Notes unless and until the same are surrendered
to the Trustee for cancellation pursuant to this Section 2.11.

                  SECTION 2.12. Defaulted Interest.

                  The Company will pay interest on overdue principal from time
to time on demand at the rate of interest then borne by the Notes. The Company
shall, to the extent lawful, pay interest on overdue installments of interest
(without regard to any applicable grace periods) from time to time on demand at
the rate of interest then borne by the Notes. Interest will be computed on the
basis of a 360-day year comprised of twelve 30-day months, and, in the case of a
partial month, the actual number of days elapsed.

                  If the Company defaults in a payment of interest on the Notes,
it shall pay the defaulted interest, plus (to the extent lawful) any interest
payable on the defaulted interest, to the Persons who are Holders on a
subsequent special record date, which special record date shall be the fifteenth
day next preceding the date fixed by the Company for the payment of defaulted
interest or the next succeeding Business Day if such date is not a Business Day.
The Company shall notify the Trustee in writing of the amount of defaulted
interest proposed to be paid on each Note and the date of the proposed payment
(a "Default Interest Payment Date"), and at the same time the Company shall
deposit with the Trustee an amount of money equal to the aggregate amount
proposed to be paid in respect of such defaulted interest or shall make
arrangements satisfactory to the Trustee for such deposit on or prior to the
date of the proposed payment, such money when deposited to be held in trust for
the benefit of the Persons entitled to such defaulted interest as provided in
this Section; provided, however, that in no event shall the Company deposit
monies proposed to be paid in respect of defaulted interest later than 11:00
a.m. New York City time of the proposed Default Interest Payment Date. At least
15 days before the subsequent special record date, the Company shall mail (or
cause to be mailed) to each Holder, as of a recent date selected by the Company,
with a copy to the Trustee, a notice that states the subsequent special record
date, the payment date and the amount of defaulted interest, and interest
payable on such defaulted interest, if any, to be paid. Notwithstanding the
foregoing, any interest which is 


                                       37



paid prior to the expiration of the 30-day period set forth in Section 6.01(a)
shall be paid to Holders as of the regular record date for the Interest Payment
Date for which interest has not been paid. Notwithstanding the foregoing, the
Company may make payment of any defaulted interest in any other lawful manner
not inconsistent with the requirements of any securities exchange on which the
Notes may be listed, and upon such notice as may be required by such exchange.

                  SECTION 2.13. CUSIP Numbers.

                  The Company in issuing the Notes may use one or more "CUSIP"
numbers, and, if so, the Trustee shall use the CUSIP numbers in notices of
redemption or exchange as a convenience to Holders; provided, however, that no
representation is hereby deemed to be made by the Trustee as to the correctness
or accuracy of the CUSIP number printed in the notice or on the Notes, and that
reliance may be placed only on the other identification numbers printed on the
Notes. The Company shall promptly notify the Trustee of any change in the CUSIP
numbers.

                  SECTION 2.14. Deposit of Monies.

                  Prior to 11:00 a.m. New York City time on each Interest
Payment Date, Maturity Date, Redemption Date, Change of Control Payment Date and
Net Proceeds Offer Payment Date, the Company shall have deposited with the
Paying Agent in immediately available funds money sufficient to make cash
payments, if any, due on such Interest Payment Date, Maturity Date, Redemption
Date, Change of Control Payment Date and Net Proceeds Offer Payment Date, as the
case may be, in a timely manner which permits the Paying Agent to remit payment
to the Holders on such Interest Payment Date, Maturity Date, Redemption Date,
Change of Control Payment Date and Net Proceeds Offer Payment Date, as the case
may be.

                  SECTION 2.15. Restrictive Legends.

                  Each Global Note and Physical Note that constitutes a
Restricted Security or is sold in compliance with Regulation S shall bear the
following legend (the "Private Placement Legend") on the face thereof until
after the second anniversary of the later of the Issue Date and the last date on
which the Company or any Affiliate of the Company was the owner of such Note (or
any predecessor security) (or such shorter period of time as permitted by Rule
144(k) under the Securities Act or any successor provision thereunder) (or such
longer period of time as may be required under the Securities Act or applicable
state securities laws in the opinion of counsel for the Company, unless
otherwise agreed by the Company and the Holder thereof):


                                       38



                  THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE U.S.
         SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND,
         ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO,
         OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH
         BELOW. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT (A) IT
         IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE
         SECURITIES ACT) OR (B) IT IS NOT A U.S. PERSON AND IS ACQUIRING THIS
         SECURITY IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER
         THE SECURITIES ACT, (2) AGREES THAT IT WILL NOT WITHIN TWO YEARS AFTER
         THE ORIGINAL ISSUANCE OF THIS SECURITY RESELL OR OTHERWISE TRANSFER
         THIS SECURITY EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B)
         INSIDE THE UNITED STATES TO A QUALIFIED INSTITUTIONAL BUYER IN
         COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) INSIDE THE
         UNITED STATES TO AN "ACCREDITED INVESTOR" (AS DEFINED IN RULE
         501(a)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT) (AN "ACCREDITED
         INVESTOR") THAT, PRIOR TO SUCH TRANSFER, FURNISHES (OR HAS FURNISHED ON
         ITS BEHALF BY A U.S. BROKER-DEALER) TO THE TRUSTEE A SIGNED LETTER
         CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE
         RESTRICTIONS ON TRANSFER OF THIS SECURITY (THE FORM OF WHICH LETTER CAN
         BE OBTAINED FROM THE TRUSTEE FOR THIS SECURITY), (D) OUTSIDE THE UNITED
         STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE
         SECURITIES ACT, (E) PURSUANT TO THE EXEMPTION FROM REGISTRATION
         PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), OR (F)
         PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
         ACT AND (3) AGREES THAT IT WILL GIVE TO EACH PERSON TO WHOM THIS
         SECURITY IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS
         LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS SECURITY WITHIN TWO
         YEARS AFTER THE ORIGINAL ISSUANCE OF THIS SECURITY, IF THE PROPOSED
         TRANSFEREE IS AN ACCREDITED INVESTOR, THE HOLDER MUST, PRIOR TO SUCH
         TRANSFER, FURNISH TO THE TRUSTEE AND THE COMPANY SUCH CERTIFICATIONS,
         LEGAL OPINIONS OR OTHER INFORMATION AS EITHER OF THEM MAY REASONABLY
         REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN
         EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
         REQUIREMENTS OF THE SECURITIES ACT. AS USED HEREIN, THE TERMS "OFFSHORE
         TRANSACTION," "UNITED STATES" AND "U.S. PERSON" HAVE THE MEANING GIVEN
         TO THEM BY REGULATION S UNDER THE SECURITIES ACT.


                                       39 




                  Each Global Note shall also bear the following legend on the
face thereof:

                  UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR
         SECURITIES IN DEFINITIVE FORM, THIS SECURITY MAY NOT BE TRANSFERRED
         EXCEPT AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY, OR
         BY ANY SUCH NOMINEE OF THE DEPOSITORY, OR BY THE DEPOSITORY OR NOMINEE
         OF SUCH SUCCESSOR DEPOSITORY OR ANY SUCH NOMINEE TO A SUCCESSOR
         DEPOSITORY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITORY. UNLESS THIS
         CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
         DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE
         COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT,
         AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR
         SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC
         (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY
         AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER,
         PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
         IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
         INTEREST HEREIN.

                  TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO
         TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF CEDE & CO. OR TO A
         SUCCESSOR THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS
         OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN
         ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN SECTION 2.17 OF THE
         INDENTURE GOVERNING THIS NOTE.

                  SECTION 2.16. Book-Entry Provisions
                                for Global Notes.

                  (a) The Global Notes initially shall (i) be registered in the
name of the Depository or the nominee of such Depository, (ii) be delivered to
the Trustee as custodian for such Depository and (iii) bear legends as set forth
in Section 2.15.

                  Members of, or participants in, the Depository ("Agent
Members") shall have no rights under this Indenture with respect to any Global
Note held on their behalf by the Depository, or the Trustee as its custodian, or
under the Global Notes, and the Depository may be treated by the Company, the
Trustee and any Agent of the Company or the Trustee as the absolute owner of
such Global Note for all purposes whatsoever.


                                       40




Notwithstanding the foregoing, nothing herein shall prevent the Company, the
Trustee or any Agent of the Company or the Trustee from giving effect to any
written certification, proxy or other authorization furnished by the Depository
or impair, as between the Depository and its Agent Members, the operation of
customary practices governing the exercise of the rights of a Holder of any
Note.

                  (b) Transfers of a Global Note shall be limited to transfers
in whole, but not in part, to the Depository, its successors or their respective
nominees. Interests of beneficial owners in a Global Note may be transferred or
exchanged for Physical Notes in accordance with the rules and procedures of the
Depository and the provisions of Section 2.17. In addition, Physical Notes shall
be transferred to all beneficial owners in exchange for their beneficial
interests in a Global Note if (i) the Depository notifies the Company that it is
unwilling or unable to continue as Depository for the Global Notes and a
successor depositary is not appointed by the Company within 90 days of such
notice or (ii) an Event of Default has occurred and is continuing and the
Registrar has received a written request from the Depository to issue Physical
Notes.

                  (c) In connection with any transfer or exchange of a portion
of the beneficial interest in a Global Note to beneficial owners pursuant to
paragraph (b), the Registrar shall (if one or more Physical Notes are to be
issued) reflect on its books and records the date and a decrease in the
principal amount of such Global Note in an amount equal to the principal amount
of the beneficial interest in the Global Note to be transferred, and the Company
shall execute and the Trustee shall authenticate and deliver, one or more
Physical Notes of like tenor and amount.

                  (d) In connection with the transfer of an entire Global Note
to beneficial owners pursuant to paragraph (b), such Global Note shall be deemed
to be surrendered to the Trustee for cancellation, and the Company shall
execute, the Guarantors shall execute Guarantees on and the Trustee shall
authenticate and deliver, to each beneficial owner identified by the Depository
in exchange for its beneficial interest in the Global Note, an equal aggregate
principal amount of Physical Notes of authorized denominations.

                  (e) Any Physical Note constituting a Restricted Security
delivered in exchange for an interest in a Global Note pursuant to paragraph (b)
or (c) shall, except as otherwise provided by paragraphs (a)(i)(x) and (c) of
Section 2.17, bear the Private Placement Legend applicable to the Physical Notes
set forth in Section 2.15.


                                       41





                  (f) The Holder of a Global Note may grant proxies and
otherwise authorize any Person, including Agent Members and Persons that may
hold interests through Agent Members, to take any action which a Holder is
entitled to take under this Indenture or the Notes.

                  SECTION 2.17. Special Transfer Provisions.

                  (a) Transfers to Non-QIB Institutional Accredited Investors
and Non-U.S. Persons. The following provisions shall apply with respect to the
registration of any proposed transfer of a Note constituting a Restricted
Security to any Institutional Accredited Investor which is not a QIB or to any
Non-U.S. Person:

                     (i) the Registrar shall register the transfer of any Note
         constituting a Restricted Security, whether or not such Note bears the
         Private Placement Legend, if (x) the requested transfer is after the
         second anniversary of the Issue Date (provided, however, that neither
         the Company nor any Affiliate of the Company has held any beneficial
         interest in such Note, or portion thereof, at any time on or prior to
         the second anniversary of the Issue Date) or (y) (1) in the case of a
         transfer to an Institutional Accredited Investor which is not a QIB
         (excluding Non-U.S. Persons), the proposed transferee has delivered to
         the Registrar a certificate substantially in the form of Exhibit C and
         any legal opinions and certifications required thereby or (2) in the
         case of a transfer to a Non-U.S. Person, the proposed transferor has
         delivered to the Registrar a certificate substantially in the form of
         Exhibit D; and

                    (ii) if the proposed transferor is an Agent Member holding a
         beneficial interest in the Global Note, upon receipt by the Registrar
         of (x) the certificate, if any, required by paragraph (i) above and (y)
         written instructions given in accordance with the Depository's and the
         Registrar's procedures,

whereupon (a) the Registrar shall reflect on its books and records the date and
(if the transfer does not involve a transfer of outstanding Physical Notes) a
decrease in the principal amount of such Global Note in an amount equal to the
principal amount of the beneficial interest in the Global Note to be
transferred, and (b) the Company shall execute and the Trustee shall
authenticate and deliver one or more Physical Notes of like tenor and amount.


                                       42




                  (b) Transfers to QIBs. The following provisions shall apply
with respect to the registration of any proposed transfer of a Note constituting
a Restricted Security to a QIB (excluding transfers to Non-U.S. Persons):

                     (i) the Registrar shall register the transfer of any
         Restricted Note, whether or not such Note bears the Private Placement
         Legend, if (x) the requested transfer is after the second anniversary
         of the Issue Date; provided, however, that neither the Company nor any
         Affiliate of the Company has held any beneficial interest in such Note,
         or portion thereof, at any time on or prior to the second anniversary
         of the Issue Date or (y) if such transfer is being made by a proposed
         transferor who has checked the box provided for on the form of Note
         stating, or has otherwise advised the Company and the Registrar in
         writing, that the sale has been made in compliance with the provisions
         of Rule 144A to a transferee who has signed the certification provided
         for on the form of Note stating, or has otherwise advised the Company
         and the Registrar in writing, that it is purchasing the Note for its
         own account or an account with respect to which it exercises sole
         investment discretion and that it and any such account is a QIB within
         the meaning of Rule 144A, and is aware that the sale to it is being
         made in reliance on Rule 144A and acknowledges that it has received
         such information regarding the Company as it has requested pursuant to
         Rule 144A or has determined not to request such information and that it
         is aware that the transferor is relying upon its foregoing
         representations in order to claim the exemption from registration
         provided by Rule 144A; and

                    (ii) if the proposed transferee is an Agent Member, and the
         Notes to be transferred consist of Physical Notes which after transfer
         are to be evidenced by an interest in a Global Note, upon receipt by
         the Registrar of written instructions given in accordance with the
         Depository's and the Registrar's procedures, the Registrar shall
         reflect on its books and records the date and an increase in the
         principal amount of such Global Note in an amount equal to the
         principal amount of the Physical Notes to be transferred, and the
         Trustee shall cancel the Physical Notes so transferred.

                  (c) Private Placement Legend. Upon the transfer, exchange or
replacement of Notes not bearing the Private Placement Legend, the Registrar
shall deliver Notes that do not bear the Private Placement Legend. Upon the
transfer, exchange or replacement of Notes bearing the Private Place-


                                       43 



ment Legend, the Registrar shall deliver only Notes that bear the Private
Placement Legend unless (i) the requested transfer is after the second
anniversary of the Issue Date (provided, however, that neither the Company nor
any Affiliate of the Company has held any beneficial interest in such Note, or
portion thereof, prior to or on the second anniversary of the Issue Date), or
(ii) there is delivered to the Registrar an Opinion of Counsel reasonably
satisfactory to the Company and the Trustee to the effect that neither such
legend nor the related restrictions on transfer are required in order to
maintain compliance with the provisions of the Securities Act.

                  (d) General. By its acceptance of any Note bearing the Private
Placement Legend, each Holder of such a Note acknowledges the restrictions on
transfer of such Note set forth in this Indenture and in the Private Placement
Legend and agrees that it will transfer such Note only as provided in this
Indenture.

                  The Registrar shall retain copies of all letters, notices and
other written communications received pursuant to Section 2.16 or this Section
2.17. The Company shall have the right to inspect and make copies of all such
letters, notices or other written communications at any reasonable time during
the Registrar's normal business hours upon the giving of reasonable written
notice to the Registrar.

                  (e) Transfers of Notes Held by Affiliates. Any certificate (i)
evidencing a Note that has been transferred to an Affiliate of the Company
within two years after the Issue Date, as evidenced by a notation on the
Assignment Form for such transfer or in the representation letter delivered in
respect thereof or (ii) evidencing a Note that has been acquired from an
Affiliate (other than by an Affiliate) in a transaction or a chain of
transactions not involving any public offering, shall, until two years after the
last date on which either the Company or any Affiliate of the Company was an
owner of such Note, in each case, bear a legend in substantially the form set
forth in Section 2.15, unless otherwise agreed by the Company (with written
notice thereof to the Trustee).


                                  ARTICLE THREE

                                   REDEMPTION


                  SECTION 3.01. Notices to Trustee.

                  If the Company elects to redeem Notes pursuant to Paragraph 5
of the Notes and Section 3.03, it shall notify the


                                       44




Trustee and the Paying Agent in writing of the Redemption Date and the principal
amount of the Notes to be redeemed.

                  The Company shall give each notice provided for in this
Section 3.01 at least 45 but not more than 90 days before the Redemption Date
(unless a shorter notice period shall be satisfactory to the Trustee, as
evidenced in a writing signed on behalf of the Trustee), together with an
Officers' Certificate stating that such redemption shall comply with the
conditions contained herein and in the Notes, the Redemption Date, the
redemption price and the principal amount of the Notes to be redeemed.

                  If the Company is required to make an offer to redeem Notes
pursuant to the provisions of Section 4.14 or 4.15 hereof, it shall furnish to
the Trustee at least 45 days but not more than 90 days before a Redemption Date
(or such shorter period as may be agreed to by the Trustee in writing), an
Officers' Certificate setting forth (i) the Section of this Indenture pursuant
to which the redemption shall occur, (ii) the Redemption Date, (iii) the
principal amount of Notes to be redeemed, (iv) the redemption price and (v) a
statement to the effect that (a) the Company or one of its Subsidiaries has
effected an Asset Sale and the conditions set forth in Section 4.15 have been
satisfied or (b) a Change of Control has occurred and the conditions set forth
in Section 4.14 have been satisfied, as applicable.

                  SECTION 3.02. Selection of Notes To Be Redeemed.

                  In the event that less than all of the Notes are to be
redeemed at any time, selection of such Notes for redemption will be made by the
Trustee in compliance with the requirements of the principal national securities
exchange, if any, on which such Notes are listed or, if such Notes are not then
listed on a national securities exchange, on a pro rata basis or by lot or by
such other method as the Trustee shall deem fair and appropriate; provided,
however, that no Notes of a principal amount of U.S. $1,000 or less shall be
redeemed in part; provided, further, that if a partial redemption is made with
the proceeds of a Public Equity Offering, selection of the Notes or portions
thereof for redemption shall be made by the Trustee only on a pro rata basis or
on as nearly a pro rata basis as is practicable (subject to DTC procedures or
the procedures of any other depository), unless such method is otherwise
prohibited. Notice of redemption shall be mailed by first-class mail at least 30
but not more than 60 days before the redemption date to each Holder of Notes to
be redeemed at its registered address. If any Note is to be redeemed in part
only, the notice of redemption that relates to such Note shall state the portion



                                       45



of the principal amount thereof to be redeemed. A new Note in a principal amount
equal to the unredeemed portion thereof will be issued in the name of the Holder
thereof upon cancellation of the original Note. On and after the redemption
date, interest will cease to accrue on Notes or portions thereof called for
redemption as long as the Company has deposited with the Paying Agent funds in
satisfaction of the applicable redemption price pursuant to this Indenture.

                  SECTION 3.03. Optional Redemption.

                  (a) The Notes will be redeemable, at the Company's option, in
whole at any time or in part from time to time, on and after August 1, 2003,
upon not less than 30 nor more than 60 days' notice, at the following redemption
prices (expressed as percentages of the principal amount thereof) if redeemed
during the twelve-month period commencing on August 1 of the years set forth
below, plus, in each case, accrued and unpaid interest thereon, if any, to the
date of redemption:




      Year                                                       Percentage
                                                             
      2003........................................................ 106.000%
      2004........................................................ 104.000%
      2005........................................................ 102.000%



                  (b) At any time, or from time to time, on or prior to August
1, 2001, the Company may, at its option, use the net cash proceeds of one or
more Public Equity Offerings to redeem up to 30% of the sum of (i) the initial
aggregate principal amount of Notes issued in the offering on the Issue Date and
(ii) the respective initial aggregate principal amounts of the Notes issued
under this Indenture after the Issue Date, at a redemption price equal to 112.0%
of the principal amount thereof plus accrued and unpaid interest thereon, if
any, to the date of redemption; provided that at least 70% of the sum of (i) the
initial aggregate principal amount of the Notes issued in the offering on the
Issue Date and (ii) the respective initial aggregate principal amounts of the
Notes issued under this Indenture after the Issue Date remains outstanding
immediately after any such redemption. In order to effect the foregoing
redemption with the proceeds of any Public Equity Offering, the Company shall
make such redemption not more than 120 days after the consummation of any such
Public Equity Offering.

                  SECTION 3.04. Notice of Redemption.

                  At least 30 days but not more than 60 days before the
Redemption Date, the Company shall mail or cause to be mailed a notice of
redemption by first class mail to each Holder 



                                       46



of Notes to be redeemed at its registered address, with a copy to the Trustee
and any Paying Agent. At the Company's request, the Trustee shall give the
notice of redemption in the Company's name and at the Company's expense. The
Company shall provide such notices of redemption to the Trustee at least five
days before the intended mailing date. In any case, failure to give such notice
or any defect in the notice to the holder of any Note shall not affect the
validity of the proceeding for the redemption of any other Note.

                  Each notice of redemption shall identify (including the CUSIP
number) the Notes to be redeemed and shall state:

                  (1) the Redemption Date;

                  (2) the redemption price and the amount of accrued interest, 
         if any, to be paid;

                  (3) the name and address of the Paying Agent;

                  (4) the subparagraph of the Notes pursuant to which such
         redemption is being made;

                  (5) that Notes called for redemption must be surrendered to
         the Paying Agent to collect the redemption price plus accrued interest,
         if any;

                  (6) that, unless the Company defaults in making the redemption
         payment, interest on Notes or applicable portions thereof called for
         redemption ceases to accrue on and after the Redemption Date, and the
         only remaining right of the Holders of such Notes is to receive payment
         of the redemption price plus accrued interest as of the Redemption
         Date, if any, upon surrender to the Paying Agent of the Notes redeemed;

                  (7) if any Note is being redeemed in part, the portion of the
         principal amount of such Note to be redeemed and that, after the
         Redemption Date, and upon surrender of such Note, a new Note or Notes
         in the aggregate principal amount equal to the unredeemed portion
         thereof will be issued; and

                  (8) if fewer than all the Notes are to be redeemed, the
         identification of the particular Notes (or portion thereof) to be
         redeemed, as well as the aggregate principal amount of Notes to be
         redeemed and the aggregate principal amount of Notes to be outstanding
         after such partial redemption.



                                       47



                  No representation is made as to the accuracy of the CUSIP
numbers listed in such notice or printed on the Notes.

                  The Company will comply with the requirements of Rule 14e-1
under the Exchange Act and any other securities laws and regulations thereunder
to the extent such laws and regulations are applicable in connection with the
purchase of Notes.

                  SECTION 3.05. Effect of Notice of Redemption.

                  Once notice of redemption is mailed in accordance with Section
3.04, such notice of redemption shall be irrevocable and Notes called for
redemption become due and payable on the Redemption Date and at the redemption
price plus accrued interest as of such date, if any. Upon surrender to the
Trustee or Paying Agent, such Notes called for redemption shall be paid at the
redemption price plus accrued interest thereon to the Redemption Date, but
installments of interest, the maturity of which is on or prior to the Redemption
Date, shall be payable to Holders of record at the close of business on the
relevant record dates referred to in the Notes. Interest shall accrue on or
after the Redemption Date and shall be payable only if the Company defaults in
payment of the redemption price.

                  SECTION 3.06. Deposit of Redemption Price.

                  On or before 11:00 a.m. New York City time on the Redemption
Date and in accordance with Section 2.14, the Company shall deposit with the
Paying Agent U.S. Legal Tender sufficient to pay the redemption price plus
accrued interest, if any, of all Notes to be redeemed on that date. The Paying
Agent shall promptly return to the Company any U.S. Legal Tender so deposited
which is not required for that purpose, except with respect to monies owed as
obligations to the Trustee pursuant to Article Seven.

                  Unless the Company fails to comply with the preceding
paragraph and defaults in the payment of such redemption price plus accrued
interest, if any, interest on the Notes to be redeemed will cease to accrue on
and after the applicable Redemption Date, whether or not such Notes are
presented for payment.

                  SECTION 3.07. Notes Redeemed in Part.

                  Upon surrender of a Note that is to be redeemed in part, the
Trustee shall authenticate for the Holder a new Note or Notes equal in principal
amount to the unredeemed portion of the Note surrendered.



                                       48 



                                  ARTICLE FOUR

                                    COVENANTS


                  SECTION 4.01. Payment of Notes.

                  (a) The Company shall pay the principal of, premium, if any,
and interest on the Notes on the dates and in the manner provided in the Notes
and in this Indenture.

                  (b) An installment of principal of or interest on the Notes
shall be considered paid on the date it is due if the Trustee or Paying Agent
(other than the Company or any of its Affiliates) holds, prior to 11:00 a.m. New
York City time on that date, U.S. Legal Tender designated for and sufficient to
pay the installment in full and is not prohibited from paying such money to the
Holders pursuant to the terms of this Indenture or the Notes.

                  (c) Notwithstanding anything to the contrary contained in this
Indenture, the Company may, to the extent it is required to do so by law, deduct
or withhold income or other similar taxes imposed by the United States of
America from principal or interest payments hereunder.

                  SECTION 4.02. Maintenance of Office or Agency.

                  The Company shall maintain the office or agency required under
Section 2.03. The Company shall give prior written notice to the Trustee of the
location, and any change in the location, of such office or agency. If at any
time the Company shall fail to maintain any such required office or agency or
shall fail to furnish the Trustee with the address thereof, such presentations,
surrenders, notices and demands may be made or served at the address of the
Trustee set forth in Section 11.02.

                  SECTION 4.03. Corporate Existence.

                  Except as provided in Article Five, the Company shall do or
shall cause to be done all things necessary to preserve and keep in full force
and effect its corporate existence and the corporate, partnership or other
existence of each of its Restricted Subsidiaries in accordance with the
respective organizational documents of the Company and each such Restricted
Subsidiary and the rights (charter and statutory) and material franchises of the
Company and its Restricted Subsidiaries.



                                       49



                  SECTION 4.04. Payment of Taxes and Other Claims.

                  The Company shall pay or discharge or cause to be paid or
discharged, before the same shall become delinquent, (i) all material taxes,
assessments and governmental charges (including withholding taxes and any
penalties, interest and additions to taxes) levied or imposed upon the Company
or any of the Subsidiaries or properties of the Company or any of the
Subsidiaries and (ii) all material lawful claims for labor, materials and
supplies that, if unpaid, might by law become a Lien upon the property of the
Company or any of the Subsidiaries; provided, however, that the Company shall
not be required to pay or discharge or cause to be paid or discharged any such
tax, assessment, charge or claim whose amount, applicability or validity is
being contested in good faith by appropriate negotiations or proceedings
properly instituted and diligently conducted for which adequate reserves, to the
extent required under GAAP, have been taken.

                  SECTION 4.05. Maintenance of Properties 
                                and Insurance.

                  (a) The Company and each of its Subsidiaries shall cause all
material properties owned by or leased to it and used or useful in the conduct
of its business to be maintained and kept in normal condition, repair and
working order and supplied with all necessary equipment and shall cause to be
made all necessary repairs, renewals, replacements, betterments and improvements
thereof, all as in the judgment of the Company or such Subsidiary may be
necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company or any of its Subsidiaries
from discontinuing the use, operation or maintenance of any of such properties,
or disposing of any of them, if such discontinuance or disposal is, in the
judgment of the Board of Directors of the Company or of the Board of Directors
of the Subsidiary concerned, or of an officer (or other agent employed by the
Company or any of its Subsidiaries) of the Company or such Subsidiary having
managerial responsibility for any such property, desirable in the conduct of the
business of the Company or any of its Subsidiaries.

                  (b) The Company and the Subsidiaries shall cause to be
provided insurance (including appropriate self-insurance) against loss or damage
of the kinds that, in the good faith judgment of the respective Boards of
Directors or other governing body or Officer or other agent of the Company or
such Subsidiaries, as the case may be, are adequate and appropriate for the
conduct of the business of the Company or such Subsidiar-



                                       50



ies, as the case may be, with reputable insurers or with the government of the
United States of America or an agency or instrumentality thereof, in such
amounts, with such deductibles, and by such methods as shall be customary, in
the good faith judgment of the respective Boards of Directors or other governing
body or Officer or other agent of the Company or such Subsidiary, as the case
may be, for companies similarly situated in the industry.

                  SECTION 4.06. Compliance Certificate;
                                Notice of Default.

                  (a) The Company shall deliver to the Trustee, within 90 days
after the end of each of the Company's fiscal years, an Officers' Certificate
(signed by the principal executive officer, principal financial Officer and/or
principal accounting Officer) stating that a review of its activities and the
activities of its Restricted Subsidiaries during the preceding fiscal year has
been made under the supervision of the signing Officers with a view to
determining whether it has kept, observed, performed and fulfilled its
obligations under this Indenture and further stating, as to each such Officer
signing such certificate, that to the best of such Officers' knowledge the
Company during such preceding fiscal year has kept, observed, performed and
fulfilled each and every such obligation and no Default or Event of Default
occurred during such year and at the date of such certificate there is no
Default or Event of Default that has occurred and is continuing or, if such
signers do know of such Default or Event of Default, the certificate shall
describe the Default or Event of Default and its status with particularity. The
Officers' Certificate shall also notify the Trustee should the Company elect to
change the manner in which it fixes its fiscal year end.

                  (b) The annual financial statements delivered pursuant to
Section 4.08 shall be accompanied by a written report of the Company's
independent certified public accountants (who shall be a firm of established
national reputation) stating (A) that their audit examination has included a
review of the terms of this Indenture and the form of the Notes as they relate
to accounting matters, and (B) whether, in connection with their audit
examination, any Default or Event of Default has come to their attention and if
such a Default or Event of Default has come to their attention, specifying the
nature and period of existence thereof; provided, however, that, without any
restriction as to the scope of the audit examination, such independent certified
public accountants shall not be liable by reason of any failure to obtain
knowledge of any such Default or Event of Default that would not be disclosed in
the course



                                       51



of an audit examination conducted in accordance with generally accepted auditing
standards.

                  (c) So long as any of the Notes are outstanding (i) if any
Default or Event of Default has occurred and is continuing or (ii) if any Holder
seeks to exercise any remedy hereunder with respect to a claimed Default under
this Indenture or the Notes, the Company shall promptly deliver to the Trustee
by registered or certified mail or by telegram, telex or facsimile transmission
followed by hard copy by registered or certified mail an Officers' Certificate
specifying such event, notice or other action promptly of its becoming aware of
such occurrence.

                  SECTION 4.07. Compliance with Laws.

                  The Company shall comply, and shall cause each of its
Subsidiaries to comply, with all applicable statutes, rules, regulations, orders
and restrictions of the United States of America, all states and municipalities
thereof and of any governmental department, commission, board, regulatory
authority, bureau, agency and instrumentality of the foregoing, in respect of
the conduct of their respective businesses and the ownership of their respective
properties, except for such noncompliances as could not singly or in the
aggregate reasonably be expected to have a material adverse effect on the
financial condition, business or results of operations of the Company and its
Subsidiaries taken as a whole.

                  SECTION 4.08. Reports to Holders.

                  The Company shall deliver to the Trustee within 15 days after
the filing of the same with the Commission, copies of the quarterly and annual
reports and of the information, documents and other reports, if any, which the
Company is required to file with the Commission pursuant to Section 13 or 15(d)
of the Exchange Act. Notwithstanding that the Company may not be subject to the
reporting requirements of Section 13 or 15(d) of the Exchange Act, the Company
will, beginning on the earlier of the date the Exchange Registration Statement
becomes effective and 180 days after the Issue Date, file with the Commission,
to the extent permitted, and provide the Trustee and Holders with such annual
reports and such information, documents and other reports specified in Sections
13 and 15(d) of the Exchange Act. The Company shall also comply with the other
provisions of TIA Section 314(a).



                                       52



                  SECTION 4.09. Waiver of Stay, Extension
                                or Usury Laws.

                  The Company covenants (to the extent that it may lawfully do
so) that it shall not at any time insist upon, plead, or in any manner
whatsoever claim or take the benefit or advantage of, any stay or extension law
or any usury law or other law that would prohibit or forgive the Company from
paying all or any portion of the principal of or interest on the Notes as
contemplated herein, wherever enacted, now or at any time hereafter in force, or
which may affect the covenants or the performance of this Indenture; and (to the
extent that it may lawfully do so) the Company hereby expressly waives all
benefit or advantage of any such law, and covenants that it shall not hinder,
delay or impede the execution of any power herein granted to the Trustee, but
shall suffer and permit the execution of every such power as though no such law
had been enacted.

                  SECTION 4.10. Limitation on Restricted 
                                Payments.

                  The Company shall not, and shall not cause or permit any of
its Restricted Subsidiaries to, directly or indirectly, (a) declare or pay any
dividend or make any distribution (other than dividends or distributions payable
in Qualified Capital Stock of the Company) on or in respect of shares of the
Company's Capital Stock to holders of such Capital Stock, (b) purchase, redeem
or otherwise acquire or retire for value any Capital Stock of the Company or any
warrants, rights or options to purchase or acquire shares of any class of such
Capital Stock (other than purchases, redemptions, acquisitions or retirements of
Capital Stock of the Company otherwise allowed pursuant to the definition of
Permitted Investments), (c) make any principal payment on, purchase, defease,
redeem, prepay, decrease or otherwise acquire or retire for value, prior to any
scheduled final maturity, scheduled repayment or scheduled sinking fund payment,
any Indebtedness of the Company or a Guarantor that is subordinate or junior in
right of payment to the Notes or a Guarantee, as the case may be, or (d) make
any Investment (other than Permitted Investments) (each of the foregoing actions
set forth in clauses (a), (b), (c) and (d) being referred to as a "Restricted
Payment"), if at the time of such Restricted Payment or immediately after giving
effect thereto, (i) a Default or an Event of Default shall have occurred and be
continuing or (ii) the Company is not able to incur at least $1.00 of additional
Indebtedness (other than Permitted Indebtedness) in compliance with Section 4.12
or (iii) the aggregate amount of Restricted Payments (including such proposed
Restricted Payment) made subsequent to the Issue Date (the amount expended for
such purposes, if other than in 



                                       53



cash, being the fair market value of such property as determined reasonably and
in good faith by the Board of Directors of the Company) shall exceed the sum of
the following amounts (without duplication): (1) 50% of the cumulative
Consolidated Net Income (or if cumulative Consolidated Net Income shall be a
loss, minus 100% of such loss) of the Company accrued on a cumulative basis
during the period beginning on the first day of the fiscal quarter immediately
following the Issue Date and ending on the last day of the last fiscal quarter
preceding the date the Restricted Payment occurs (the "Reference Date")
(treating such period as a single accounting period); plus (2) 100% of the
aggregate net cash proceeds received by the Company from any Person (other than
a Subsidiary of the Company) from the issuance and sale subsequent to the Issue
Date and on or prior to the Reference Date of Qualified Capital Stock of the
Company or any options, warrants or other rights to acquire Qualified Capital
Stock of the Company; plus (3) 100% of the aggregate net cash proceeds received
subsequent to the Issue Date by the Company from any Person (other than a
Subsidiary of the Company) from the issuance or sale of debt securities or
shares of Disqualified Capital Stock that have been converted into or exchanged
for Qualified Capital Stock, together with the aggregate cash received by the
Company at the time of such conversion or exchange; plus (4) 100% of the
aggregate net cash proceeds of any equity contribution received by the Company
from a holder of the Company's Qualified Capital Stock subsequent to the Issue
Date; plus (5) an amount equal to the net reduction in Investments in any Person
resulting from payments of interest on Indebtedness, dividends, repayments of
loans or advances, or other transfers of assets, in each case to the Company or
any Restricted Subsidiary (except to the extent any such payment is otherwise
included in the calculation of Consolidated Net Income), or from redesignations
of Unrestricted Subsidiaries as Restricted Subsidiaries, valued in each case as
provided in the definition of "Investments," not to exceed, in the case of an
Unrestricted Subsidiary, the amount of Investments previously made by the
Company or any Restricted Subsidiary in such Unrestricted Subsidiary.

                  Notwithstanding the foregoing, the provisions set forth in the
immediately preceding paragraph do not prohibit: (1) the payment of any dividend
within 60 days after the date of declaration of such dividend if the dividend
would have been permitted on the date of declaration; (2) if no Default or Event
of Default shall have occurred and be continuing, the acquisition, redemption,
repurchase or retirement of any shares of Capital Stock of the Company, either
(i) solely in exchange for shares of Qualified Capital Stock of the Company or
(ii) through the application of net proceeds of a substantially concurrent sale
for cash (other than to a Restricted Subsidiary of 



                                       54



the Company) of shares of Qualified Capital Stock of the Company; (3) if no
Default or Event of Default shall have occurred and be continuing, the
acquisition of any Indebtedness of the Company or a Guarantor that is
subordinate or junior in right of payment to the Notes or the Guarantees, as
applicable, either (i) solely in exchange for shares of Qualified Capital Stock
of the Company, or (ii) through the application of net proceeds of a
substantially concurrent sale for cash (other than to a Restricted Subsidiary of
the Company) of (A) shares of Qualified Capital Stock of the Company or (B)
Refinancing Indebtedness; (4) repurchases by the Company of Capital Stock of the
Company from employees, Officers or directors of the Company or any of its
Subsidiaries or their authorized representatives upon the death, disability or
termination of employment of such employees, Officers or directors, or as
otherwise required by existing employment agreements, in an aggregate amount not
to exceed $1,000,000 in any calendar year (including any cash payments made
during such calendar year pursuant to Indebtedness incurred in order to
repurchase Capital Stock of the Company from employees, Officers or directors of
the Company) and $5,000,000 in the aggregate in each case plus (i) the aggregate
cash proceeds actually received from any reissuance during such calendar year of
Capital Stock by the Company to employees, Officers or directors of the Company
and its Subsidiaries and (ii) the aggregate cash proceeds actually received in
such calendar year from any payments on life insurance policies in which the
Company or any of its Subsidiaries is the beneficiary with respect to any
employees, officers or directors of the Company and its Subsidiaries which
proceeds are used to purchase the Capital Stock of the Company held by any such
employees, Officers or directors; provided, however, that the Company shall not
be permitted to repurchase Capital Stock pursuant to this clause (4), if (x) any
Default or Event of Default shall have occurred and be continuing or (y) on the
date of any such repurchase the Company could not incur at least $1.00 of
Indebtedness (other than Permitted Indebtedness) in compliance with Section
4.12; (5) repurchases of Capital Stock deemed to occur upon the exercise of
stock options if such Capital Stock represents a portion of the exercise price
thereof; and (6) the exchange of Senior Exchangeable Preferred Stock for Junior
Subordinated Notes; provided, that after giving effect to the exchange thereof,
the Consolidated Fixed Charge Coverage Ratio of the Company is greater than 2.75
to 1.0. In determining the aggregate amount of Restricted Payments made
subsequent to the Issue Date in accordance with clause (iii) of the immediately
preceding paragraph, amounts expended pursuant to clauses (1), (2)(ii),
(3)(ii)(A) and (4) of this paragraph shall be included in such calculation.



                                       55



                  SECTION 4.11. Limitations on Transactions
                                with Affiliates.

                  (a) The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, directly or indirectly, enter into or permit to
exist any transaction or series of related transactions (including, without
limitation, the purchase, sale, lease or exchange of any property or the
rendering of any service) with, or for the benefit of, any of its Affiliates
(each an "Affiliate Transaction"), other than (x) Affiliate Transactions
permitted under paragraph (b) below and (y) Affiliate Transactions on terms that
are no less favorable than those that might reasonably have been obtained in a
comparable transaction at such time on an arm's-length basis from a Person that
is not an Affiliate of the Company or such Restricted Subsidiary. All Affiliate
Transactions (and each series of related Affiliate Transactions which are
similar or part of a common plan) involving aggregate payments or other property
with a fair market value in excess of $2,500,000 shall be approved by a majority
of non-interested directors of the Board of Directors of the Company or such
Restricted Subsidiary, as the case may be, such approval to be evidenced by a
Board Resolution stating that such majority of non-interested directors of the
Board of Directors has determined that such transaction complies with the
foregoing provisions. If the Company or any Restricted Subsidiary of the Company
enters into an Affiliate Transaction (or a series of related Affiliate
Transactions related to a common plan) that involves an aggregate fair market
value of more than $5,000,000, the Company or such Restricted Subsidiary, as the
case may be, shall, prior to the consummation thereof, obtain an opinion that
such transaction or series of related transactions are fair to the Company or
the relevant Restricted Subsidiary, as the case may be, from a financial point
of view, from an Independent Financial Advisor and file the same with the
Trustee.

                  (b) The restrictions set forth in clause (a) shall not apply
to (i) reasonable fees and compensation paid to and indemnity provided on behalf
of, officers, directors, employees, agents or consultants of the Company or any
Restricted Subsidiary of the Company as determined in good faith by the
Company's Board of Directors or senior management; (ii) transactions exclusively
between or among the Company and any of its Restricted Subsidiaries or
exclusively between or among such Restricted Subsidiaries, provided such
transactions are not otherwise prohibited by this Indenture; (iii) any agreement
(including the Management Agreement and the payment of all fees and expenses
contemplated thereunder; provided that no payment of management fees or expenses
(other than the Closing Fee) contemplated under the Management Agreement shall
be made un-



                                       56



less (i) the Consolidated Fixed Charge Coverage Ratio during the four full
fiscal quarters ending on or prior to the date of any such payment is greater
than or equal to 1.75 to 1.0 and (ii) the Consolidated Fixed Charge Coverage
Ratio calculated solely for the one full fiscal quarter ending on or prior to
the date of any such payment is greater than or equal to 1.75 to 1.0) as in
effect as of the Issue Date or any amendment thereto or any transaction
contemplated thereby (including pursuant to any amendment thereto) in any
replacement agreement thereto so long as any such amendment or replacement
agreement is not more disadvantageous to the Company or its Restricted
Subsidiaries, as the case may be, in any material respect than the original
agreement as in effect on the Issue Date; (iv) Restricted Payments permitted by
this Indenture; (v) any issuance of securities or other payments, awards or
grants in cash, securities or otherwise pursuant to, or the funding of,
employment arrangements, stock options and stock ownership plans of the Company
entered into in the ordinary course of business and approved by the Board of
Directors; (vi) loans and advances, or guarantees of loans of third parties, to
employees and officers of the Company and its Restricted Subsidiaries in the
ordinary course of business not in excess of $2.0 million at any one time
outstanding; and (vii) indemnification agreements provided for the benefit of
the Company or any Restricted Subsidiary of the Company from officers, directors
or employees of the Company or any Restricted Subsidiary.

                  SECTION 4.12. Limitation on Incurrence
                                of Additional Indebtedness.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, directly or indirectly, create, incur, assume,
guarantee, acquire, become liable, contingently or otherwise, with respect to,
or otherwise become responsible for payment of (collectively, "incur") any
Indebtedness (other than Permitted Indebtedness); provided, however, that if no
Default or Event of Default shall have occurred and be continuing at the time of
or as a consequence of the incurrence of any such Indebtedness, the Company or
any of its Restricted Subsidiaries may incur Indebtedness (including, without
limitation, Acquired Indebtedness) if on the date of the incurrence of such
Indebtedness, after giving effect to the incurrence thereof, the Consolidated
Fixed Charge Coverage Ratio of the Company is greater than (i) 2.0 to 1.0, if
the Indebtedness is to be incurred prior to August 1, 2000, (ii) 2.25 to 1.0, if
the Indebtedness is to be incurred on or after August 1, 2000 and prior to
August 1, 2002, or (iii) 2.50 to 1.0, if the Indebtedness is to be incurred on
or after August 1, 2002; provided, further, however, that the Company shall not
be permitted to exchange any of its Senior Exchangeable Preferred Stock 



                                       57




for Junior Subordinated Notes or any other instrument of Indebtedness unless,
after giving effect to the exchange thereof, the Consolidated Fixed Charge
Coverage Ratio of the Company is greater than 2.75 to 1.0.

                  For purposes of determining compliance with this Section 4.12,
(i) in the event that an item of Indebtedness meets the criteria of more than
one of the types of Indebtedness permitted by this covenant, the Company in its
sole discretion will classify such item of Indebtedness and will only be
required to include the amount and type of each class of Indebtedness in the
test specified in the first paragraph of this covenant or in one of the clauses
of the definition of the term Permitted Indebtedness, (ii) the amount of
Indebtedness issued at a price which is less than the principal amount thereof
shall be equal to the amount of liability in respect thereof determined in
accordance with GAAP, (iii) Indebtedness incurred in connection with, or in
contemplation of, any transaction described in the definition of the term
Acquired Indebtedness shall be deemed to have been incurred by the Company or
one of its Restricted Subsidiaries, as the case may be, at the time an acquired
Person becomes such a Restricted Subsidiary (or is merged into the Company or
such a Restricted Subsidiary) or at the time of the acquisition of assets, as
the case may be, and (iv) guarantees or Liens supporting Indebtedness permitted
to be incurred under this Section 4.12 may be issued or granted if otherwise
issued or granted in accordance with the terms of this Indenture.

                  SECTION 4.13. Limitation on Dividend and
                                Other Payment Restrictions
                                Affecting Subsidiaries.

                  The Company will not, and will not cause or permit any of its
Restricted Subsidiaries to, directly or indirectly, create or otherwise cause or
permit to exist or become effective any encumbrance or restriction on the
ability of any Restricted Subsidiary of the Company to (a) pay dividends or make
any other distributions on or in respect of its Capital Stock; (b) make loans or
advances or to pay any Indebtedness or other obligation owed to the Company or
any other Restricted Subsidiary of the Company; or (c) transfer any of its
property or assets to the Company or any other Restricted Subsidiary of the
Company, except for such encumbrances or restrictions existing under or by
reason of: (1) applicable law; (2) this Indenture, the Notes and the Guarantees;
(3) customary non-assignment provisions of any contract or any lease governing a
leasehold interest of any Restricted Subsidiary of the Company; (4) any
instrument governing Acquired Indebtedness, which encumbrance or restriction is
not applicable to any Person, or the properties or assets of any Person, other
than the Person or the properties 



                                       58



or assets of the Person so acquired (and such Person's direct and indirect
Subsidiaries); (5) agreements existing on the Issue Date to the extent and in
the manner such agreements are in effect on the Issue Date; (6) a Bank Credit
Facility; (7) an agreement governing Indebtedness incurred to Refinance the
Indebtedness issued, assumed or incurred pursuant to an agreement referred to in
clause (2), (4), (5) or (6) above; provided, however, that the provisions
relating to such encumbrance or restriction contained in any such Indebtedness
are no less favorable to the Company or the relevant Restricted Subsidiary of
the Company in any material respect as determined by the Board of Directors of
the Company in their reasonable and good faith judgment than the provisions
relating to such encumbrance or restriction contained in agreements referred to
in such clause (2), (4), (5) or (6); (8) any restriction or encumbrance
contained in contracts for sale of assets permitted by this Indenture in respect
of the assets being sold pursuant to such contracts pending the close of such
sale, which encumbrance or restriction is not applicable to any asset other than
the assets being sold pursuant to such contracts; (9) Purchase Money Obligations
incurred in accordance with the terms of this Indenture for property acquired in
the ordinary course of business that impose restrictions of the nature described
in clause (c) above on the property so acquired; or (10) restrictions of the
nature described in clause (c) above on the transfer of assets subject to any
Lien permitted under this Indenture imposed by the holder of such Lien.

                  SECTION 4.14. Change of Control.

                  (a) Upon the occurrence of a Change of Control, each Holder
shall have the right to require that the Company purchase all or a portion of
such Holder's Notes pursuant to the offer described below (the "Change of
Control Offer"), at a purchase price equal to 101% of the principal amount
thereof plus accrued and unpaid interest, if any, thereon to the date of
purchase.

                  (b) Within 30 days following the date upon which the Change of
Control occurred, the Company shall send, by first class mail, a notice to each
Holder at such Holder's last registered address, with a copy to the Trustee,
which notice shall govern the terms of the Change of Control Offer. The notice
to the Holders shall contain all instructions and materials necessary to enable
such Holders to tender Notes pursuant to the Change of Control Offer. Such
notice shall state:



                                       59



                     (i) that the Change of Control Offer is being made pursuant
         to this Section 4.14 and that all Notes tendered and not withdrawn
         shall be accepted for payment;

                    (ii) the purchase price (including the amount of accrued
         interest) and the purchase date (which shall be no earlier than 30 days
         nor later than 60 days from the date such notice is mailed, other than
         as may be required by law) (the "Change of Control Payment Date");

                   (iii) that any Note not tendered shall continue to accrue
         interest;

                    (iv) that, unless the Company defaults in making payment
         therefor, any Note accepted for payment pursuant to the Change of
         Control Offer shall cease to accrue interest after the Change of
         Control Payment Date;

                     (v) that Holders electing to have a Note purchased pursuant
         to a Change of Control Offer shall be required to surrender the Note,
         with the form entitled "Option of Holder to Elect Purchase" on the
         reverse of the Note completed, to the Paying Agent at the address
         specified in the notice prior to the close of business on the third
         business day prior to the Change of Control Payment Date;

                    (vi) that Holders shall be entitled to withdraw their
         election if the Paying Agent receives, not later than the second
         business day prior to the Change of Control Payment Date, a telegram,
         telex, facsimile transmission or letter setting forth the name of the
         Holder, the principal amount of the Notes the Holder delivered for
         purchase and a statement that such Holder is withdrawing his election
         to have such Notes purchased;

                   (vii) that Holders whose Notes are purchased only in part
         shall be issued new Notes in a principal amount equal to the
         unpurchased portion of the Notes surrendered; provided, however, that
         each Note purchased and each new Note issued shall be in an original
         principal amount of $1,000 or integral multiples thereof; and

                  (viii) the circumstances and relevant facts regarding such
         Change of Control.

                  On the Change of Control Payment Date, the Company shall, to
the extent permitted by law, (i) accept for payment all Notes or portions
thereof properly tendered pursuant to the Change of Control Offer, (ii) deposit
with the Paying Agent an amount equal to the aggregate Change of Control Payment
in re-



                                       60



spect of all Notes or portions thereof so tendered and (iii) deliver, or cause
to be delivered, to the Trustee for cancellation the Notes so accepted together
with an Officers' Certificate stating that such Notes or portions thereof have
been tendered to and purchased by the Company. The Paying Agent shall promptly
either (x) pay to the Holder against presentation and surrender (or, in the case
of partial payment, endorsement) of the Global Notes or (y) in the case of
Certificated Securities, mail to each Holder of Notes the Change of Control
Payment for such Notes, and the Trustee shall promptly authenticate and deliver
to the Holder of the Global Notes a new Global Note or Notes or, in the case of
Physical Notes, mail to each Holder new Certificated Securities, as applicable,
equal in principal amount to any unpurchased portion of the Notes surrendered,
if any, provided that each new Certificated Security shall be in a principal
amount of $1,000 or an integral multiple thereof. The Company shall notify the
Trustee and the Holders of the results of the Change of Control Offer on or as
soon as practicable after the Change of Control Payment Date.

                  Neither the Board of Directors of the Company nor the Trustee
may waive the provisions of this Section 4.14 relating to the Company's
obligation to make a Change of Control Offer or a Holder's right to redemption
upon a Change of Control.

                  The Company shall comply with the requirements of Rule 14e-1
under the Exchange Act and any other securities laws and regulations thereunder
to the extent such laws and regulations are applicable in connection with the
repurchase of Notes pursuant to a Change of Control Offer. To the extent that
the provisions of any securities laws or any applicable exchange regulations
conflict with the provisions of this Section 4.14, the Company shall comply with
the applicable securities laws and regulations and exchange regulations and
shall not be deemed to have breached its obligations under the provisions of
this Section 4.14 by virtue thereof.

                  SECTION 4.15. Limitation on Asset Sales.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, consummate an Asset Sale unless (i) the Company or
the applicable Restricted Subsidiary, as the case may be, receives consideration
at the time of such Asset Sale at least equal to the fair market value of the
assets sold or otherwise disposed of (as determined in good faith by the
Company's Board of Directors), (ii) at least 75% of the consideration received
by the Company or the Restricted Subsidiary, as the case may be, from such Asset
Sale shall be in the form of cash or Cash Equivalents and is received at the
time of such 



                                       61



disposition; provided, however, that the amount of (A) any liabilities (as shown
on the Company's or such Restricted Subsidiary's most recent balance sheet or
the notes thereto) of the Company or any Restricted Subsidiary that are assumed
by the transferee in such Asset Sale and from which the Company or such
Restricted Subsidiary is released and (B) any notes or other obligations
received by the Company or any such Restricted Subsidiary from such transferee
that are immediately converted by the Company or such Restricted Subsidiary into
cash or Cash Equivalents (to the extent of the cash or Cash Equivalents
received) shall be deemed to be cash for the purposes of this Section 4.15; and
(iii) upon the consummation of an Asset Sale, the Company shall apply, or cause
such Restricted Subsidiary to apply, the Net Cash Proceeds relating to such
Asset Sale within 360 days of receipt thereof either (A) to repay any
Indebtedness ranking at least pari passu with the Notes (including amounts under
Bank Credit Facilities), (B) to make an investment in properties and assets that
replace the properties and assets that were the subject of such Asset Sale or in
properties and assets that shall be used in the business of the Company and its
Restricted Subsidiaries as existing on the Issue Date or in businesses
reasonably related thereto ("Replacement Assets"), or (C) a combination of
prepayment and investment permitted by the foregoing clauses (iii)(A) and
(iii)(B). On the 361st day after an Asset Sale or such earlier date, if any, as
the Board of Directors of the Company or of such Restricted Subsidiary
determines not to apply the Net Cash Proceeds relating to such Asset Sale as set
forth in clauses (iii)(A), (iii)(B) and (iii)(C) of the next preceding sentence
(each, a "Net Proceeds Offer Trigger Date"), an amount equal to such aggregate
amount of Net Cash Proceeds which have not been applied on or before such Net
Proceeds Offer Trigger Date as permitted in clauses (iii)(A), (iii)(B) and
(iii)(C) of the next preceding sentence (each a "Net Proceeds Offer Amount")
shall be applied by the Company or such Restricted Subsidiary to make an offer
to purchase (the "Net Proceeds Offer") on a date (the "Net Proceeds Offer
Payment Date") not less than 45 nor more than 60 days following the applicable
Net Proceeds Offer Trigger Date, from all Holders on a pro rata basis, that
amount of Notes equal to the Net Proceeds Offer Amount at a price equal to 100%
of the principal amount of the Notes to be purchased, plus accrued and unpaid
interest thereon, if any, to the date of purchase; provided, however, that if at
any time any consideration other than cash or Cash Equivalents received by the
Company or any Restricted Subsidiary of the Company, as the case may be, in
connection with any Asset Sale is converted into or sold or otherwise disposed
of for cash (other than interest received with respect to any such non-cash
consideration), then such conversion or disposition shall be deemed to
constitute an Asset Sale hereunder and the 



                                       62



Net Cash Proceeds thereof shall be applied in accordance with this covenant. A
transfer of assets by the Company to a Wholly Owned Restricted Subsidiary or by
a Restricted Subsidiary to the Company or to a Wholly Owned Restricted
Subsidiary will not be deemed to be an Asset Sale. A transaction that is subject
to and made in compliance with Section 5.01 shall not be subject to the
application of this Section 4.15. The Company may defer the Net Proceeds Offer
until there is an aggregate unutilized Net Proceeds Offer Amount equal to or in
excess of $5,000,000 resulting from one or more Asset Sales (at which time, the
entire unutilized Net Proceeds Offer Amount, and not just the amount in excess
of $5,000,000, shall be applied as required pursuant to this paragraph).

                  Notwithstanding the immediately preceding paragraph, the
Company and its Restricted Subsidiaries shall be permitted to consummate an
Asset Sale without complying with such paragraph to the extent (i) at least 75%
of the consideration for such Asset Sale constitutes Replacement Assets and (ii)
such Asset Sale is for fair market value; provided that any consideration not
constituting Replacement Assets received by the Company or any of its Restricted
Subsidiaries in connection with any Asset Sale permitted to be consummated under
this paragraph shall constitute Net Cash Proceeds subject to the provisions of
the two preceding paragraphs.

                  Each Net Proceeds Offer shall be mailed to the record Holders
as shown on the register of Holders within 30 days following the Net Proceeds
Offer Trigger Date, with a copy to the Trustee, and shall comply with the
procedures set forth in this Indenture. Upon receiving notice of the Net
Proceeds Offer, Holders may elect to tender their Notes in whole or in part in
integral multiples of $1,000 in exchange for cash. To the extent Holders
properly tender Notes in an amount exceeding the Net Proceeds Offer Amount,
Notes of tendering Holders shall be purchased on a pro rata basis (based on
amounts tendered) unless otherwise required by law or any applicable exchange
regulations. A Net Proceeds Offer shall remain open for a period of 20 business
days or such longer period as may be required by law.

                  The Company shall comply with the requirements of Rule 14e-1
under the Exchange Act and any other securities laws and regulations thereunder
to the extent such laws and regulations are applicable in connection with the
repurchase of Notes pursuant to a Net Proceeds Offer. To the extent that the
provisions of any securities laws or regulations or any applicable exchange
regulations conflict with this Section 4.15, the Company shall comply with the
applicable securities laws and regulations and exchange regulations and shall
not be deemed to 



                                       63



have breached its obligations under this Section 4.15 by virtue
thereof.

                  SECTION 4.16. Limitation on Preferred
                                Stock of Restricted Subsidiaries.

                  The Company shall not permit any of its Restricted
Subsidiaries to issue any Preferred Stock (other than to the Company or to a
Wholly Owned Restricted Subsidiary of the Company) or permit any Person (other
than the Company or a Wholly Owned Restricted Subsidiary of the Company) to own
any Preferred Stock of any Restricted Subsidiary of the Company unless at the
time of such issuance such Restricted Subsidiary would be entitled to create,
incur or assume Indebtedness pursuant to Section 4.12 in the aggregate amount
equal to the aggregate liquidation value, plus any accrued and unpaid dividends,
of the Preferred Stock to be issued. Notwithstanding the foregoing, nothing
contained in this Section 4.16 will prohibit the ownership of Preferred Stock
issued by a Person prior to the time (a) such Person becomes a Restricted
Subsidiary of the Company, (b) such Person merges with or into a Restricted
Subsidiary of the Company or (c) a Restricted Subsidiary of the Company merges
with or into such Person; provided that such Preferred Stock was not issued by
such Person in anticipation of a transaction contemplated by any of clauses (a),
(b) or (c) above.

                  SECTION 4.17. Limitation on Liens.

                  The Company shall not, and shall not cause or permit any of
its Restricted Subsidiaries to, directly or indirectly, create, incur, assume or
permit or suffer to exist any Liens of any kind against or upon any property or
assets of the Company or any of its Restricted Subsidiaries whether owned on the
Issue Date or acquired after the Issue Date, or any proceeds therefrom, or
assign or otherwise convey any right to receive income or profits therefrom
unless (i) in the case of Liens securing Indebtedness that is expressly
subordinate or junior in right of payment to the Notes or any Guarantee, the
Notes and such Guarantee, as the case may be, are secured by a Lien on such
property, assets or proceeds that is senior in priority to such Liens and (ii)
in all other cases, the Notes and the Guarantees are equally and ratably
secured, except for (A) Liens existing as of the Issue Date to the extent and in
the manner such Liens are in effect on the Issue Date; (B) Liens securing
Indebtedness incurred pursuant to Bank Credit Facilities; (C) Liens securing the
Notes and the Guarantees; (D) Liens in favor of the Company or a Restricted
Subsidiary of the Company on assets of any Subsidiary of the Company; (E) Liens
securing Refinancing Indebtedness which is incurred to Refinance any
In-



                                       64



debtedness which has been secured by a Lien permitted under this Indenture and
which has been incurred in accordance with the provisions of this Indenture;
provided, however, that such Liens (a) are no less favorable to the Holders and
are not more favorable to the lienholders with respect to such Liens than the
Liens in respect of the Indebtedness being Refinanced and (b) do not extend to
or cover any property or assets of the Company or any of its Restricted
Subsidiaries not securing the Indebtedness so Refinanced; and (F) Permitted
Liens.

                  SECTION 4.18. Additional Subsidiary Guarantees.

                  If the Company or any of its Restricted Subsidiaries transfers
or causes to be transferred, in one transaction or a series of related
transactions, any property to any Restricted Subsidiary (other than a Foreign
Subsidiary) that is not a Guarantor, or if the Company or any of its Restricted
Subsidiaries shall organize, acquire or otherwise invest in another Restricted
Subsidiary (other than a Foreign Subsidiary) having total assets with a book
value in excess of $500,000, then such transferee or acquired or other
Restricted Subsidiary (other than a Foreign Subsidiary) shall (i) execute and
deliver to the Trustee a supplemental indenture in form reasonably satisfactory
to the Trustee pursuant to which such Restricted Subsidiary shall
unconditionally guarantee all of the Company's obligations under the Notes and
this Indenture on the terms set forth in this Indenture and (ii) deliver to the
Trustee an Opinion of Counsel that such supplemental indenture has been duly
authorized, executed and delivered by such Restricted Subsidiary and constitutes
a legal, valid, binding and enforceable obligation of such Restricted
Subsidiary; provided that such opinion may contain exceptions that are customary
in opinions of that type. Thereafter, such Restricted Subsidiary shall be a
Guarantor for all purposes of this Indenture.

                  SECTION 4.19. Conduct of Business.

                  The Company and its Restricted Subsidiaries shall not engage
in any businesses which are not the same, similar or related to the businesses
in which the Company and its Restricted Subsidiaries are engaged on the Issue
Date.

                  SECTION 4.20. No Restrictions on Consummation 
                                of the Recapitalization.

                  Notwithstanding any provision contained in this Indenture to
the contrary, the consummation of the Recapitalization will not be prohibited.



                                       65



                  SECTION 4.21. Additional Equity Contributions.

                  If the Company's Consolidated EBITDA for the quarter ended
June 30, 1998 is less than $5.6 million on a Pro Forma Basis, BRS or any other
Principal will purchase, with cash or Cash Equivalents, Qualified Capital Stock
of the Company in an amount equal to the difference between (x) $5.6 million and
(y) the amount of the Company's Consolidated EBITDA for the quarter ended June
30, 1998. Any purchase of Qualified Capital Stock required pursuant to this
Section 4.21 shall occur on or prior to September 30, 1998 and no other
provision of this Indenture will prohibit the issuance of such Qualified Capital
Stock.


                                  ARTICLE FIVE

                              SUCCESSOR CORPORATION


                  SECTION 5.01. Merger, Consolidation
                                and Sale of Assets.

                  (a) The Company shall not, in a single transaction or series
of related transactions, consolidate or merge with or into any Person, or sell,
assign, transfer, lease, convey or otherwise dispose of (or cause or permit any
Restricted Subsidiary of the Company to sell, assign, transfer, lease, convey or
otherwise dispose of) all or substantially all of the Company's assets
(determined on a consolidated basis for the Company and the Company's Restricted
Subsidiaries) whether as an entirety or substantially as an entirety to any
Person unless: (i) either (1) the Company shall be the surviving or continuing
corporation or (2) the Person (if other than the Company) formed by such
consolidation or into which the Company is merged or the Person which acquires
by sale, assignment, transfer, lease, conveyance or other disposition the
properties and assets of the Company and of the Company's Restricted
Subsidiaries substantially as an entirety (the "Surviving Entity") (x) shall be
a corporation organized and validly existing under the laws of the United States
or any State thereof or the District of Columbia and (y) shall expressly assume,
by supplemental indenture (in form and substance satisfactory to the Trustee),
executed and delivered to the Trustee, the due and punctual payment of the
principal of, and premium, if any, and interest on all of the Notes and the
performance of every covenant of the Notes, this Indenture and the Registration
Rights Agreement on the part of the Company to be performed or observed; (ii)
immediately after giving effect to such transaction and the assumption
contemplated by clause (i)(2)(y) above (including giving effect to any
Indebtedness and Acquired In-



                                       66



debtedness incurred or anticipated to be incurred in connection with or in
respect of such transaction), the Company or such Surviving Entity, as the case
may be, shall be able to incur at least $1.00 of additional Indebtedness (other
than Permitted Indebtedness) pursuant to Section 4.12; (iii) immediately before
and immediately after giving effect to such transaction and the assumption
contemplated by clause (i)(2)(y) above (including, without limitation, giving
effect to any Indebtedness and Acquired Indebtedness incurred or anticipated to
be incurred and any Lien granted in connection with or in respect of the
transaction), no Default or Event of Default shall have occurred or be
continuing; and (iv) the Company or the Surviving Entity shall have delivered to
the Trustee an Officers' Certificate and an Opinion of Counsel, each stating
that such consolidation, merger, sale, assignment, transfer, lease, conveyance
or other disposition and, if a supplemental indenture is required in connection
with such transaction, such supplemental indenture comply with the applicable
provisions of this Indenture and that all conditions precedent in this Indenture
relating to such transaction have been satisfied.

                  (b) For purposes of this Section 5.01, the transfer (by lease,
assignment, sale or otherwise, in a single transaction or series of
transactions) of all or substantially all of the properties or assets of one or
more Restricted Subsidiaries of the Company the Capital Stock of which
constitutes all or substantially all of the properties and assets of the
Company, shall be deemed to be the transfer of all or substantially all of the
properties and assets of the Company.

                  (c) Each Guarantor (other than any Guarantor whose Guarantee
is to be released in accordance with the terms of the Guarantee and this
Indenture in connection with any transaction complying with the provisions of
Section 4.15) shall not, and the Company shall not cause or permit any Guarantor
to, consolidate with or merge with or into any Person other than the Company or
any other Guarantor unless: (i) the entity formed by or surviving any such
consolidation or merger (if other than the Guarantor) or to which such sale,
lease, conveyance or other disposition shall have been made is a corporation
organized and existing under the laws of the United States or any State thereof
or the District of Columbia; (ii) such entity assumes by supplemental indenture
all of the obligations of the Guarantor on the Guarantee; and (iii) immediately
after giving effect to such transaction, no Default or Event of Default shall
have occurred and be continuing. Any merger or consolidation of a Restricted
Subsidiary with and into the Company (with the Company being the surviving
entity) or Guarantor need only comply with clause (iv) of the first paragraph of
Section 5.01(a).



                                       67



                  SECTION 5.02. Successor Corporation 
                                Substituted.

                  Upon any consolidation, combination or merger or any transfer
of all or substantially all of the assets of the Company in accordance with
Section 5.01, in which the Company is not the continuing corporation, the
Surviving Entity formed by such consolidation or into which the Company is
merged or to which such conveyance, lease or transfer is made shall succeed to,
and be substituted for, and may exercise every right and power of, the Company
under and the Company shall be discharged from its Obligations under this
Indenture, the Notes, and the Registration Rights Agreement with the same effect
as if such surviving entity had been named as such.


                                   ARTICLE SIX

                                    REMEDIES


                  SECTION 6.01. Events of Default.

                  An "Event of Default" means any of the following events:

                  (a) the failure to pay interest on any Notes when the same
         becomes due and payable and the default continues for a period of 30
         days;

                  (b) the failure to pay the principal on any Notes, when such
         principal becomes due and payable, at maturity, upon redemption or
         otherwise (including the failure to make a payment to purchase Notes
         tendered pursuant to a Change of Control Offer or a Net Proceeds
         Offer);

                  (c) a Default in the observance or performance of any other
         covenant or agreement contained in this Indenture which Default
         continues for a period of 30 days after the Company receives written
         notice specifying the default (and demanding that such default be
         remedied) from the Trustee or the Holders of at least 25% of the
         outstanding principal amount of the Notes (except in the case of a
         default with respect to Section 5.01, which shall constitute an Event
         of Default with such notice requirement but without such passage of
         time requirement);

                  (d) the failure to pay at final maturity (giving effect to any
         applicable grace periods and any extensions thereof) the principal
         amount of any Indebtedness of the 



                                       68



         Company or any Restricted Subsidiary of the Company, which failure
         continues for a period of 20 days or more, or the acceleration of the
         final stated maturity of any such Indebtedness (which acceleration is
         not rescinded, annulled or otherwise canceled within 20 days of
         receipt by the Company or such Restricted Subsidiary of notice of any
         such acceleration) if the aggregate principal amount of such
         Indebtedness, together with the principal amount of any other such
         Indebtedness in default for failure to pay principal at final maturity
         or which has been accelerated, in each case with respect to which the
         20-day period described above has passed, aggregates $5,000,000 or
         more at any time;

                  (e) one or more judgments in an aggregate amount in excess of
         $5,000,000 (excluding judgments to the extent covered by insurance by
         one or more reputable insurers and as to which such insurers have
         acknowledged coverage for) shall have been rendered against the Company
         or any of its Restricted Subsidiaries and such judgments remain
         undischarged, unpaid or unstayed for a period of 60 days after such
         judgment or judgments become final and non-appealable;

                  (f) the Company or any of its Significant Subsidiaries
         pursuant to or under or within the meaning of any Bankruptcy Law:

                             (i) commences a voluntary case or proceeding;

                            (ii) consents to the entry of an order for relief
                  against it in an involuntary case or proceeding;

                           (iii) consents to the appointment of a Custodian of
                  it or for all or substantially all of its property;

                            (iv) makes a general assignment for the benefit of
                  its creditors; or

                             (v) shall generally not pay its debts when such
                  debts become due or shall admit in writing its inability to
                  pay its debts generally;

                  (g) a court of competent jurisdiction enters an order or
         decree under any Bankruptcy Law that:

                             (i) is for relief against the Company or any of its
                  Significant Subsidiaries in an involuntary case or proceeding,



                                       69



                            (ii) appoints a Custodian of the Company or any of
                  its Significant Subsidiaries for all or substantially all of
                  their properties taken as a whole, or

                           (iii) orders the liquidation of the Company, the
                  Company or any of their Significant Subsidiaries,

         and in each case the order or decree remains unstayed and in effect for
         60 days; or

                  (h) any Guarantee of a Significant Subsidiary ceases to be in
         full force and effect or any Guarantee of a Significant Subsidiary is
         declared to be null and void and unenforceable or any Guarantee of a
         Significant Subsidiary is found to be invalid or any Guarantor that is
         a Significant Subsidiary denies its liability under its Guarantee
         (other than by reason of release of a Guarantor in accordance with this
         Indenture); provided, however, that an Event of Default will also be
         deemed to occur with respect to Subsidiaries that are not Significant
         Subsidiaries ("Insignificant Subsidiaries") if the Guarantees of such
         Insignificant Subsidiaries cease to be in full force and effect or are
         declared null and void and unenforceable or such Insignificant
         Subsidiaries deny their liability under their Guarantees, if when
         aggregated and taken as a whole, the Insignificant Subsidiaries subject
         to this clause (h) would meet the definition of a Significant
         Subsidiary.

                  SECTION 6.02. Acceleration.

                  If an Event of Default (other than an Event of Default
specified in Section 6.01 (f) or (g) relating to the Company) shall occur and be
continuing, the Trustee or the Holders of at least 25% in principal amount of
outstanding Notes may declare the principal of and accrued interest on all the
Notes to be due and payable by notice in writing to the Company and the Trustee
specifying the respective Event of Default and that it is a declaration of
acceleration, and the same shall become immediately due and payable. If an Event
of Default specified in Section 6.01 (f) or (g) relating to the Company occurs
and is continuing, then all unpaid principal of, and premium, if any, and
accrued and unpaid interest on all of the outstanding Notes shall ipso facto
become and be immediately due and payable without any declaration or other act
on the part of the Trustee or any Holder.

                  At any time after a declaration of acceleration with respect
to the Notes as described in the preceding paragraph, the Holders of a majority
in principal amount of the Notes may rescind and cancel such declaration and its
consequences (a) if 



                                       70



the rescission would not conflict with any judgment or decree, (b) if all
existing Events of Default have been cured or waived except nonpayment of
principal or interest that has become due solely because of the acceleration,
(c) to the extent the payment of such interest is lawful, interest on overdue
installments of interest and overdue principal, which has become due otherwise
than by such declaration of acceleration, has been paid, (d) if the Company has
paid the Trustee its reasonable compensation and reimbursed the Trustee for its
expenses, disbursements and advances and (e) in the event of the cure or waiver
of an Event of Default of the type described in Section 6.01(f) or (g), the
Trustee shall have received an Officers' Certificate and an Opinion of Counsel
that such Event of Default has been cured or waived. No such rescission shall
affect any subsequent Default or impair any right consequent thereto.

                  SECTION 6.03. Other Remedies.

                  (a) If an Event of Default occurs and is continuing, the
Trustee may pursue any available remedy by proceeding at law or in equity to
collect the payment of the principal of, premium, if any, or interest on the
Notes or to enforce the performance of any provision of the Notes or this
Indenture.

                  (b) All rights of action and claims under this Indenture or
the Notes may be enforced by the Trustee even if it does not possess any of the
Notes or does not produce any of them in the proceeding. A delay or omission by
the Trustee or any Holder in exercising any right or remedy accruing upon an
Event of Default shall not impair the right or remedy or constitute a waiver of
or acquiescence in the Event of Default. No remedy is exclusive of any other
remedy. All available remedies are cumulative to the extent permitted by law.

                  SECTION 6.04. Waiver of Past Defaults.

                  Prior to the acceleration of the Notes, the Holders of a
majority in aggregate principal amount of the Notes then outstanding by notice
to the Trustee may, on behalf of the Holders of all the Notes, waive any
existing Default or Event of Default and its consequences under this Indenture,
except a Default or Event of Default specified in Section 6.01(a) or (b) or in
respect of any provision hereof which cannot be modified or amended without the
consent of the Holder so affected pursuant to Section 9.02 or the TIA. When a
Default or Event of Default is so waived, it shall be deemed cured and shall
cease to exist. This Section 6.04 shall be in lieu of ss. 316(a)(1)(B) of the
TIA and such ss. 316(a)(1)(B) of the TIA is hereby expressly 



                                       71



excluded from this Indenture and the Notes, as permitted by the TIA.

                  SECTION 6.05. Control by Majority.

                  Holders of the Notes may not enforce this Indenture or the
Notes except as provided in this Article Six and under the TIA. The Holders of a
majority in aggregate principal amount of the then outstanding Notes have the
right to direct the time, method and place of conducting any proceeding for any
remedy available to the Trustee or exercising any trust or power conferred on
the Trustee, provided, however, that the Trustee may refuse to follow any
direction (a) that conflicts with any rule of law or this Indenture, (b) that
the Trustee, in its sole discretion, determines may be unduly prejudicial to the
rights of another Holder (it being understood that the Trustee shall have no
duty to ascertain whether or not such actions or forebearances are unduly
prejudicial to such Holders), or (c) that may expose the Trustee to personal
liability for which adequate indemnity provided to the Trustee against such
liability is not reasonably assured to it; provided, further, however, that the
Trustee may take any other action deemed proper by the Trustee that is not
inconsistent with such direction or this Indenture. This Section 6.05 shall be
in lieu of ss. 316(a)(1)(A) of the TIA, and such ss. 316(a)(1)(A) of the TIA is
hereby expressly excluded from this Indenture and the Notes, as permitted by the
TIA.

                  SECTION 6.06. Limitation on Suits.

                  No Holder of any Notes shall have any right to institute any
proceeding with respect to this Indenture or the Notes or any remedy hereunder,
unless the Holders of at least 25% in aggregate principal amount of the
outstanding Notes have made written request, and offered reasonable indemnity,
to the Trustee to institute such proceeding as Trustee under the Notes and this
Indenture, the Trustee has failed to institute such proceeding within 30 days
after receipt of such notice, request and offer of indemnity and the Trustee,
within such 30-day period, has not received directions inconsistent with such
written request by Holders of a majority in aggregate principal amount of the
outstanding Notes.

                  The foregoing limitations shall not apply to a suit instituted
by a Holder of a Note for the enforcement of the payment of the principal of,
premium, if any, or interest on, such Note on or after the respective due dates
expressed or provided for in such Note.



                                       72



                  A Holder may not use this Indenture to prejudice the rights of
any other Holders or to obtain priority or preference over such other Holders.

                  SECTION 6.07. Right of Holders To Receive Payment.

                  Notwithstanding any other provision in this Indenture, the
right of any Holder of a Note to receive payment of the principal of, premium,
if any, and interest on such Note, on or after the respective due dates
expressed or provided for in such Note, or to bring suit for the enforcement of
any such payment on or after the respective due dates, is absolute and
unconditional and shall not be impaired or affected without the consent of the
Holder.

                  SECTION 6.08. Collection Suit by Trustee.

                  If an Event of Default specified in clause (a) or (b) of
Section 6.01 occurs and is continuing, the Trustee may recover judgment in its
own name and as trustee of an express trust against the Company, or any other
obligor on the Notes for the whole amount of the principal of, premium, if any,
and accrued interest remaining unpaid, together with interest on overdue
principal and, to the extent that payment of such interest is lawful, interest
on overdue installments of interest, in each case at the rate per annum provided
for by the Notes and such further amount as shall be sufficient to cover the
costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel and
any other amounts due the Trustee pursuant to the provisions of Section 7.07.

                  SECTION 6.09. Trustee May File Proofs of Claim.

                  The Trustee may file such proofs of claim and other papers or
documents as may be necessary or advisable in order to have the claims of the
Trustee (including any claim for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents, counsel, accountants and
experts) and the Holders allowed in any judicial proceedings relative to the
Company (or any other obligor upon the Notes), its creditors or its property and
shall be entitled and empowered to collect and receive any monies or other
property payable or deliverable on any such claims and to distribute the same,
and any Custodian in any such judicial proceedings is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay to
the Trustee any amount due to it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agent and coun-



                                       73



sel, and any other amounts due the Trustee under Section 7.07. Nothing herein
contained shall be deemed to authorize the Trustee to authorize or consent to or
accept or adopt on behalf of any Holder any plan of reorganization, arrangement,
adjustment or composition affecting the Notes or the rights of any Holder
thereof, or to authorize the Trustee to vote in respect of the claim of any
Holder in any such proceeding.

                  SECTION 6.10. Priorities.

                  If the Trustee collects any money pursuant to this Article Six
it shall pay out such money in the following order:

                  First: to the Trustee, its agents and attorneys for amounts
         due under Section 7.07, including payment of all compensation, expense
         and liabilities incurred, and all advances made, by the Trustee and the
         cost and expenses of collection;

                  Second: to Holders for interest accrued on the Notes, ratably,
         without preference or priority of any kind, according to the amounts
         due and payable on the Notes for interest;

                  Third: to Holders for the principal amounts (including any
         premium) owing under the Notes, ratably, without preference or priority
         of any kind, according to the amounts due and payable on the Notes for
         the principal (including any premium); and

                  Fourth:  the balance, if any, to the Company.

                  The Trustee, upon prior written notice to the Company, may fix
a record date and payment date for any payment to Holders pursuant to this
Section 6.10.

                  SECTION 6.11. Undertaking for Costs.

                  In any suit for the enforcement of any right or remedy under
this Indenture or in any suit against the Trustee for any action taken or
omitted by it as Trustee, a court may in its discretion require the filing by
any party litigant in the suit of an undertaking to pay the costs of the suit,
and the court in its discretion may assess reasonable costs, including
reasonable attorneys' fees, against any party litigant in the suit, having due
regard to the merits and good faith of the claims or defenses made by the party
litigant. This Section 6.11 does not apply to any suit by the Trustee, any suit
by a Holder pursuant to Section 6.07, or a suit by a Holder or Hold-



                                       74



ers of more than 10% in aggregate principal amount of the outstanding Notes.


                                  ARTICLE SEVEN

                                     TRUSTEE


                  SECTION 7.01. Duties of Trustee.

                  (a) If an Event of Default has occurred and is continuing, the
Trustee shall exercise such of the rights and powers vested in it by this
Indenture and use the same degree of care and skill in its exercise thereof as a
prudent person would exercise or use under the circumstances in the conduct of
his own affairs.

                  (b) Except during the continuance of an Event of Default:

                  (1) The Trustee need perform only those duties as are
         specifically set forth in this Indenture and no covenants or
         obligations shall be implied in this Indenture that are adverse to the
         Trustee.

                  (2) The Trustee may conclusively rely, as to the truth of the
         statements and the correctness of the opinions expressed therein, upon
         certificates or opinions furnished to the Trustee and conforming to the
         requirements of this Indenture. However, in the case of any such
         certificates or opinions that by any provision hereof are specifically
         required to be furnished to the Trustee, the Trustee shall examine the
         certificates and opinions to determine whether or not they conform to
         the requirements of this Indenture.

                  (c) Notwithstanding anything to the contrary herein contained,
the Trustee may not be relieved from liability for its own negligent action, its
own negligent failure to act, or its own willful misconduct, except that:

                  (1) This paragraph does not limit the effect of paragraph (b)
         of this Section 7.01.

                  (2) The Trustee shall not be liable for any error of judgment
         made in good faith by a Trust Officer, unless it is proved that the
         Trustee was negligent in ascertaining the pertinent facts.



                                       75



                  (3) The Trustee shall not be liable with respect to any action
         it takes or omits to take in good faith in accordance with a direction
         received by it pursuant to Section 6.02, 6.04 or 6.05.

                  (d) No provision of this Indenture shall require the Trustee
to expend or risk its own funds or otherwise incur any financial liability in
the performance of any of its duties hereunder or in the exercise of any of its
rights or powers if it shall have reasonable grounds for believing that
repayment of such funds or adequate indemnity against such risk or liability is
not reasonably assured to it.

                  (e) Every provision of this Indenture that in any way relates
to the Trustee is subject to paragraphs (a), (b), (c) and (d) of this Section
7.01 and Section 7.02.

                  (f) The Trustee shall not be liable for interest on any money
or assets received by it except as the Trustee may agree in writing with the
Company. Assets held in trust by the Trustee need not be segregated from other
assets except to the extent required by law.

                  SECTION 7.02. Rights of Trustee.

                  Subject to Section 7.01:

                  (a) The Trustee may rely and shall be fully protected in
         acting or refraining from acting upon any document believed by it to be
         genuine and to have been signed or presented by the proper Person. The
         Trustee need not investigate any fact or matter stated in the document.

                  (b) Before the Trustee acts or refrains from acting, it may
         consult with counsel of its selection and may require an Officers'
         Certificate or an Opinion of Counsel, which shall conform to Sections
         11.04 and 11.05. The Trustee shall not be liable for any action it
         takes or omits to take in good faith in reliance on such Officers'
         Certificate or Opinion of Counsel. The Trustee may consult with counsel
         and the written advice of such counsel or any Opinion of Counsel shall
         be full and complete authorization and protection from liability in
         respect to any action taken, suffered or omitted by it hereunder in
         good faith and in reliance thereon.

                  (c) The Trustee may act through its attorneys and agents and
         shall not be responsible for the misconduct or negligence of any agent
         appointed with due care.



                                       76



                  (d) The Trustee shall not be liable for any action that it
         takes or omits to take in good faith which it reasonably believes to be
         authorized or within its rights or powers.

                  (e) The Trustee shall not be bound to make any investigation
         into the facts or matters stated in any resolution, certificate,
         statement, instrument, opinion, notice, request, direction, consent,
         order, bond, debenture, or other paper or document, but the Trustee, in
         its discretion, may make such further inquiry or investigation into
         such facts or matters as it may see fit, and, if the Trustee shall
         determine to make such further inquiry or investigation, it shall be
         entitled, upon reasonable notice to the Company, to examine the books,
         records, and premises of the Company, personally or by agent or
         attorney and to consult with the officers and representatives of the
         Company, including the Company's accountants and attorneys.

                  (f) The Trustee shall be under no obligation to exercise any
         of its rights or powers vested in it by this Indenture at the request,
         order or direction of any of the Holders pursuant to the provisions of
         this Indenture, unless such Holders have offered to the Trustee
         reasonable indemnity satisfactory to the Trustee against the costs,
         expenses and liabilities which may be incurred by it in compliance with
         such request, order or direction.

                  (g) The Trustee shall not be required to give any bond or
         surety in respect of the performance of its powers and duties
         hereunder.

                  (h) Delivery of reports, information and documents to the
         Trustee under Section 4.08 is for informational purposes only and the
         Trustee's receipt of the foregoing shall not constitute constructive
         notice of any information contained therein or determinable from
         information contained therein, including the Company's compliance with
         any of their covenants hereunder (as to which the Trustee is entitled
         to rely exclusively on Officers' Certificates).

                  SECTION 7.03. Individual Rights of Trustee.

                  The Trustee in its individual or any other capacity may become
the owner or pledgee of Notes and may otherwise deal with the Company, the
Company, or any of the Subsidiaries, or their respective Affiliates with the
same rights it would have if it were not Trustee. Any Agent may do the same with
like 



                                       77



rights. However, the Trustee must comply with Sections 7.10 and 7.11.

                  SECTION 7.04. Trustee's Disclaimer.

                  The Trustee makes no representation as to the validity or
adequacy of this Indenture or the Notes, and it shall not be accountable for the
Company's use of the proceeds from the Notes, it shall not be responsible for
the use or application of any money received by any Paying Agent other than the
Trustee, and it shall not be responsible for any statement of the Company in
this Indenture or the Notes other than the Trustee's certificate of
authentication.

                  SECTION 7.05. Notice of Default.

                  If a Default or an Event of Default occurs and is continuing
and if it is known to a Trust Officer, the Trustee shall mail to each Holder
notice of the uncured Default or Event of Default within 90 days after obtaining
knowledge thereof. Except in the case of a Default or an Event of Default in
payment of principal of, or interest on, any Note, including an accelerated
payment, a Default in payment on the Change of Control Payment Date pursuant to
a Change of Control Offer or on the Net Proceeds Offer Payment Date pursuant to
a Net Proceeds Offer and a Default in compliance with Article Five hereof, the
Trustee may withhold the notice if and so long as its Board of Directors, the
executive committee of its Board of Directors or a committee of its directors
and/or Trust Officers in good faith determines that withholding the notice is in
the interest of the Holders. The foregoing sentence of this Section 7.05 shall
be in lieu of the proviso to Section 315(b) of the TIA and such proviso to 
Section 315(b) of the TIA is hereby expressly excluded from this Indenture and 
the Notes, as permitted by the TIA.

                  SECTION 7.06. Reports by Trustee to Holders.

                  Within 60 days after May 15 of each year beginning with 
1999, the Trustee shall, to the extent that any of the events described in 
TIA Section 313(a) occurred within the previous twelve months, but not 
otherwise, mail to each Holder a brief report dated as of such date that 
complies with TIA Section 313(a). The Trustee also shall comply with TIA 
Sections 313(b), (c) and (d).

                  A copy of each report at the time of its mailing to Holders
shall be mailed to the Company and filed with the Commission and each stock
exchange, if any, on which the Notes are listed.



                                       78



                  The Company shall promptly notify the Trustee if the Notes
become listed on any stock exchange and the Trustee shall comply with TIA 
Section 313(d).

                  SECTION 7.07. Compensation and Indemnity.

                  The Company shall pay to the Trustee from time to time such
compensation for its services as has been agreed to in writing signed by the
Company and the Trustee. The Trustee's compensation shall not be limited by any
law on compensation of a trustee of an express trust. The Company shall
reimburse the Trustee upon request for all reasonable out-of-pocket expenses
incurred or made by it in connection with the performance of its duties under
this Indenture. Such expenses shall include the reasonable fees and expenses of
the Trustee's agents, counsel, accountants and experts.

                  The Company shall indemnify each of the Trustee (or any
predecessor Trustee) and its agents, employees, stockholders, Affiliates and
directors and officers for, and hold them each harmless against, any and all
loss, liability, damage, claim or expense (including reasonable fees and
expenses of counsel), including taxes (other than taxes based on the income of
the Trustee) incurred by them except for such actions to the extent caused by
any negligence or willful misconduct on their part, arising out of or in
connection with the acceptance or administration of this trust including the
reasonable costs and expenses of defending themselves against any claim or
liability in connection with the exercise or performance of any of their rights,
powers or duties hereunder. The Trustee shall notify the Company promptly of any
claim asserted against the Trustee for which it may seek indemnity. Failure by
the Trustee to so notify the Company shall not relieve the Company of its
Obligations hereunder except to the extent such failure shall have prejudiced
the Company. At the Trustee's sole discretion, the Company shall defend the
claim and the Trustee shall cooperate and may participate in the defense;
provided, however, that any settlement of a claim shall be approved in writing
by the Trustee if such settlement would result in an admission of liability by
the Trustee or if such settlement would not be accompanied by a full release of
the Trustee for all liability arising out of the events giving rise to such
claim. Alternatively, the Trustee may at its option have separate counsel of its
own choosing and the Company shall pay the reasonable fees and expenses of such
counsel.

                  To secure the Company's payment obligations in this Section
7.07, the Trustee shall have a lien prior to the Notes on all assets or money
held or collected by the Trustee, in its capacity as Trustee, except assets or
money held in trust to 



                                       79



pay principal of or premium, if any, or interest on particular Notes.

                  When the Trustee incurs expenses or renders services after an
Event of Default specified in Section 6.01(f) occurs, such expenses and the
compensation for such services are intended to constitute expenses of
administration under any Bankruptcy Law.

                  The provisions of this Section 7.07 shall survive the
termination of this Indenture.

                  SECTION 7.08. Replacement of Trustee.

                  The Trustee may resign at any time by so notifying the
Company. The Holders of a majority in principal amount of the outstanding Notes
may remove the Trustee and appoint a successor Trustee with the Company's
consent, by so notifying the Company and the Trustee. The Company may remove the
Trustee if:

                  (1) the Trustee fails to comply with Section 7.10;

                  (2) the Trustee is adjudged bankrupt or insolvent;

                  (3) a receiver or other public officer takes charge of 
        the Trustee or its property; or

                  (4) the Trustee becomes incapable of acting.

                  If the Trustee resigns or is removed or if a vacancy exists in
the office of Trustee for any reason, the Company shall notify each Holder of
such event and shall promptly appoint a successor Trustee. Within one year after
the successor Trustee takes office, the Holders of a majority in aggregate
principal amount of the outstanding Notes may appoint a successor Trustee to
replace the successor Trustee appointed by the Company.

                  A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Immediately after that,
the retiring Trustee shall transfer all property held by it as Trustee to the
successor Trustee, subject to the lien provided in Section 7.07, the resignation
or removal of the retiring Trustee shall become effective, and the successor
Trustee shall have all the rights, powers and duties of the Trustee under this
Indenture. The Company shall mail notice of such successor Trustee's appointment
to each Holder.



                                       80



                  If a successor Trustee does not take office within 30 days
after the retiring Trustee resigns or is removed, the retiring Trustee, the
Company or the Holders of at least 10% in aggregate principal amount of the
outstanding Notes may petition any court of competent jurisdiction for the
appointment of a successor Trustee.

                  If the Trustee fails to comply with Section 7.10, any Holder
may petition any court of competent jurisdiction for the removal of the Trustee
and the appointment of a successor Trustee.

                  Notwithstanding any resignation or replacement of the Trustee
pursuant to this Section 7.08, the Company's obligations under Section 7.07
shall continue for the benefit of the retiring Trustee.

                  SECTION 7.09. Successor Trustee by Merger, Etc.

                  If the Trustee consolidates with, merges or converts into, or
transfers all or substantially all of its corporate trust business to, another
corporation, the resulting, surviving or transferee corporation without any
further act shall, if such resulting, surviving or transferee corporation is
otherwise eligible hereunder, be the successor Trustee; provided, however, that
such corporation shall be otherwise qualified and eligible under this Article
Seven.

                  SECTION 7.10. Eligibility; Disqualification.

                  This Indenture shall always have a Trustee who satisfies 
the requirement of TIA Sections 310(a)(1), (2) and (5). The Trustee (or, in 
the case of a Trustee that is a subsidiary of another bank or a corporation 
included in a bank holding company system, the related bank or bank holding 
company) shall have a combined capital and surplus of at least $100,000,000 
million as set forth in its most recent published annual report of condition, 
and have a corporate trust office in the City of New York. In addition, if 
the Trustee is a subsidiary of another bank or a corporation included in a 
bank holding company system, the Trustee, independently of such bank or bank 
holding company, shall meet the capital requirements of TIA Section 
310(a)(2). The Trustee shall comply with TIA Section 310(b); provided, 
however, that there shall be excluded from the operation of TIA Section 
310(b)(1) any indenture or indentures under which other securities, or 
certificates of interest or participation in other securities, of the Company 
are outstanding, if the requirements for such exclusion set forth in TIA 
Section 310(b)(1) are met. The provisions of TIA Section 310 shall apply to 
the Company, as obligor of the Notes.


                                       81



                  SECTION 7.11. Preferential Collection of
                                Claims Against Company.

                  The Trustee shall comply with TIA Section 311(a), excluding 
any creditor relationship listed in TIA Section 311(b). A Trustee who has 
resigned or been removed shall be subject to TIA Section 311(a) to the extent 
indicated therein.

                                  ARTICLE EIGHT

                       DISCHARGE OF INDENTURE; DEFEASANCE


                  SECTION 8.01. Termination of Company's Obligations.

                  This Indenture shall be discharged and shall cease to be of
further effect (except as to surviving rights or registration of transfer or
exchange of the Notes, as expressly provided for in this Indenture) as to all
outstanding Notes when (a) either (i) all Notes, theretofore authenticated and
delivered (except lost, stolen or destroyed Notes which have been replaced or
paid and Notes for whose payment money has theretofore been deposited in trust
or segregated and held in trust by the Company and thereafter repaid to the
Company or discharged from such trust) have been delivered to the Trustee for
cancellation or (ii) all Notes not theretofore delivered to the Trustee for
cancellation have become due and payable and the Company has irrevocably
deposited or caused to be deposited with the Trustee funds in an amount
sufficient to pay and discharge the entire Indebtedness on the Notes not
theretofore delivered to the Trustee for cancellation, for principal of,
premium, if any, and interest on the Notes to the date of deposit together with
irrevocable instructions from the Company directing the Trustee to apply such
funds to the payment thereof at maturity or redemption, as the case may be; (b)
the Company has paid all other sums payable under this Indenture by the Company;
and (c) the Company has delivered to the Trustee an Officers' Certificate and an
Opinion of Counsel stating that all conditions precedent under this Indenture
relating to the satisfaction and discharge of this Indenture have been complied
with.

                  The Company may, at its option and at any time, elect to have
its obligations and the obligations of the Guarantors discharged with respect to
the outstanding Notes ("Legal Defeasance"). Such Legal Defeasance means that the
Company shall be deemed to have paid and discharged the entire indebtedness
represented by the outstanding Notes, except for (a) the rights of Holders to
receive payments in respect of the principal of, premium, if any, and interest
on the Notes when such payments 



                                       82



are due, (b) the Company's obligations with respect to the Notes concerning
issuing temporary Notes, registration of Notes, mutilated, destroyed, lost or
stolen Notes and the maintenance of an office or agency for payments, (c) the
rights, powers, trust, duties and immunities of the Trustee and the Company's
obligations in connection therewith and (d) the Legal Defeasance provisions of
this Section 8.01. In addition, the Company may, at its option and at any time,
elect to have the obligations of the Company released with respect to covenants
contained in Sections 4.04, 4.05, 4.08 and 4.10 through 4.19 and Article Five
("Covenant Defeasance") and thereafter any omission to comply with such
obligations shall not constitute a Default or Event of Default with respect to
the Notes. In the event of Covenant Defeasance, those events described under
Section 6.01 (except those events described in Section 6.01(a), (b), (f) and
(g)) shall no longer constitute an Event of Default with respect to the Notes.

                  In order to exercise either Legal Defeasance or Covenant
Defeasance:

                  (a) the Company must irrevocably deposit with the Trustee, in
         trust, for the benefit of the Holders cash in United States dollars,
         non-callable U.S. Government Obligations, or a combination thereof, in
         such amounts as shall be sufficient, in the opinion of a nationally
         recognized firm of independent public accountants, to pay the principal
         of, premium, if any, and interest on the Notes on the stated date for
         payment thereof or on the applicable Redemption Date, as the case may
         be;

                  (b) in the case of Legal Defeasance, the Company shall have
         delivered to the Trustee an Opinion of Counsel in the United States
         reasonably acceptable to the Trustee confirming that (i) the Company
         has received from, or there has been published by, the Internal Revenue
         Service a ruling or (ii) since the date of this Indenture, there has
         been a change in the applicable federal income tax law, in either case
         to the effect that, and based thereon such opinion of counsel shall
         confirm that, the Holders shall not recognize income, gain or loss for
         federal income tax purposes as a result of such Legal Defeasance and in
         either case, and (iii) the Holders shall be subject to U.S. federal
         income tax on the same amounts, in the same manner and at the same
         times as would have been the case if such Legal Defeasance had not
         occurred;

                  (c) in the case of Covenant Defeasance, the Company shall have
         delivered to the Trustee an Opinion of Counsel in the United States
         reasonably acceptable to the Trustee 



                                       83



         confirming that the Holders shall not recognize income, gain or loss
         for federal income tax purposes as a result of such Covenant
         Defeasance and shall be subject to federal income tax on the same
         amounts, in the same manner and at the same times as would have been
         the case if such Covenant Defeasance had not occurred;

                  (d) no Default or Event of Default shall have occurred and be
         continuing on the date of such deposit or insofar as Events of Default
         under Section 6.01(f) or (g) are concerned, at any time in the period
         ending on the 91st day after the date of deposit;

                  (e) such Legal Defeasance or Covenant Defeasance shall not
         result in a breach or violation of, or constitute a default under this
         Indenture or any other material agreement or instrument to which the
         Company or any of its Subsidiaries is a party or by which the Company
         or any of its Subsidiaries is bound;

                  (f) the Company shall have delivered to the Trustee an
         Officers' Certificate stating that the deposit was not made by the
         Company with the intent of preferring the Holders over any other
         creditors of the Company or with the intent of defeating, hindering,
         delaying or defrauding any other creditors of the Company or others;

                  (g) the Company shall have delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that all
         conditions precedent provided for or relating to the Legal Defeasance
         or the Covenant Defeasance, as the case may be, have been complied
         with; and

                  (h) the Company shall have delivered to the Trustee an Opinion
         of Counsel to the effect that after the 91st day following the deposit,
         the trust funds shall not be subject to the effect of any applicable
         bankruptcy, insolvency, reorganization or similar laws affecting
         creditors' rights generally.

                  Notwithstanding the foregoing, the Opinion of Counsel required
by clause (b) with respect to Legal Defeasance or Covenant Defeasance need not
be delivered if all the Notes not theretofore delivered to the Trustee for
cancellation (i) have become due and payable or (ii) shall become due and
payable on the maturity date within one year under arrangements satisfactory to
the Trustee for the giving of notice of redemption by such Trustee in the name,
and at the expense, of the Company.



                                       84



                  SECTION 8.02. Application of Trust Money.

                  The Trustee or Paying Agent shall hold in trust U.S. Legal
Tender or U.S. Government Obligations deposited with it pursuant to Section
8.01, and shall apply the deposited U.S. Legal Tender and the money from U.S.
Government Obligations in accordance with this Indenture to the payment of the
principal of and interest on the Notes. The Trustee shall be under no obligation
to invest said U.S. Legal Tender or U.S. Government Obligations.

                  The Company shall pay and indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the Legal Tender or U.S.
Government Obligations deposited pursuant to Section 8.01 or the principal and
interest received in respect thereof other than any such tax, fee or other
charge which by law is for the account of the Holders of outstanding Notes.

                  SECTION 8.03. Repayment to the Company.

                  Subject to Sections 7.07 and 8.01, the Trustee and the Paying
Agent shall promptly pay to the Company upon request any excess U.S. Legal
Tender or U.S. Government Obligations held by them at any time and thereupon
shall be relieved from all liability with respect to such money. The Trustee and
the Paying Agent shall pay to the Company upon request any money held by them
for the payment of principal or interest that remains unclaimed for one year
after the due date for payment of such principal or interest; provided, however,
that the Company shall, if requested by the Trustee or Paying Agent, give to the
Trustee or Paying Agent, indemnification reasonably satisfactory to it against
any and all liability which may be incurred by it by reason of such paying;
provided, further, that the Trustee or such Paying Agent, before being required
to make any payment, may at the expense of the Company cause to be published
once in a newspaper of general circulation in the City of New York or mail to
each Holder entitled to such money notice that such money remains unclaimed and
that after a date specified therein which shall be at least 30 days from the
date of such publication or mailing any unclaimed balance of such money then
remaining shall be repaid to the Company. After payment to the Company, Holders
entitled to such money must look to the Company for payment as general creditors
unless an applicable law designates another Person, and all liability of the
Trustee and such Paying Agent with respect to such money shall cease.



                                       85



                  SECTION 8.04. Reinstatement.

                  If the Trustee or Paying Agent is unable to apply any U.S.
Legal Tender or U.S. Government Obligations in accordance with Section 8.01 by
reason of any legal proceeding or by reason of any order or judgment of any
court or governmental authority enjoining, restraining or otherwise prohibiting
such application, the Company's obligations under this Indenture and the Notes
shall be revived and reinstated as though no deposit had occurred pursuant to
Section 8.01 until such time as the Trustee or Paying Agent is permitted to
apply all such U.S. Legal Tender or U.S. Government Obligations in accordance
with Section 8.01; provided, however, that if the Company has made any payment
of interest on or principal of any Notes because of the reinstatement of its
obligations, the Company shall be subrogated to the rights of the Holders of
such Notes to receive such payment from the U.S. Legal Tender or U.S. Government
Obligations held by the Trustee or Paying Agent.

                  SECTION 8.05. Acknowledgment of Discharge
                                by Trustee.

                  After (i) the conditions of Section 8.01 have been satisfied,
(ii) the Company has paid or caused to be paid all other sums payable hereunder
by the Company and (iii) the Company has delivered to the Trustee an Officers'
Certificate and an Opinion of Counsel, each stating that all conditions
precedent referred to in clause (i) above relating to the satisfaction and
discharge of this Indenture have been complied with, the Trustee upon request
shall acknowledge in writing the discharge of the Company's obligations under
this Indenture except for those surviving obligations specified in Section 8.01,
provided the legal counsel delivering such Opinion of Counsel may rely as to
matters of fact on one or more Officers' Certificates of the Company.


                                  ARTICLE NINE

                          MODIFICATION OF THE INDENTURE


                  SECTION 9.01. Without Consent of Holders.

                  Subject to the provisions of Section 9.02, the Company, the
Guarantors and the Trustee may amend, waive or supplement this Indenture without
notice to or consent of any Holder: (a) to cure any ambiguity, defect or
inconsistency; (b) to comply with Section 5.01 of this Indenture; (c) to provide
for uncertificated Notes in addition to certificated 


                                       86



Notes; (d) to comply with any requirements of the Commission in order to effect
or maintain the qualification of this Indenture under the TIA; or (e) to make
any change that would provide any additional benefit or rights to the Holders or
that does not adversely affect the rights of any Holder in any material respect.
Notwithstanding the foregoing, the Trustee, the Guarantors and the Company may
not make any change pursuant to this Section 9.01 that adversely affects the
rights of any Holder in any material respect under this Indenture without the
consent of such Holder. In formulating its determination on such matters, the
Trustee shall be entitled to rely on such evidence as it deems appropriate,
including, without limitation, solely on an Opinion of Counsel, and may not be
held liable therefor.

                  Upon the request of the Company and the Guarantors accompanied
by a Board Resolution authorizing the execution of any such amended or
supplemental Indenture, and upon receipt by the Trustee of the documents
described in Section 9.06, the Trustee shall join with the Company and the
Guarantors in the execution of any amended or supplemental Indenture authorized
or permitted by the terms of this Indenture and to make any further appropriate
agreements and stipulations which may be therein contained, but the Trustee may
but shall not be obligated to enter into such amended or supplemental Indenture
which affects its own rights, duties or immunities under this Indenture or
otherwise.

                  SECTION 9.02. With Consent of Holders.

                  The Company, the Guarantors and the Trustee may amend or
supplement this Indenture or the Notes or any amended or supplemental Indenture
with the written consent of the Holders of Notes of not less than a majority in
aggregate principal amount of the Notes then outstanding (including consents
obtained in connection with a tender offer or exchange offer for the Notes).

                  Upon the request of the Company and the Guarantors accompanied
by a Board Resolution authorizing the execution of any such amended or
supplemental Indenture, and upon the filing with the Trustee of evidence
satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid,
and upon receipt by the Trustee of the documents described in Section 9.06, the
Trustee shall join with the Company and the Guarantors in the execution of such
amended or supplemental Indenture unless such amended or supplemental Indenture
affects the Trustee's own rights, duties or immunities under this Indenture or
otherwise, in which case the Trustee may in its sole discretion, but shall not
be obligated to, enter into such amended or supplemental Indenture.


                                       87



                  It shall not be necessary for the consent of the Holders of
Notes under this Section 9.02 to approve the particular form of any proposed
amendment or waiver, but it shall be sufficient if such consent approves the
substance thereof.

                  After an amendment, supplement or waiver under this Section
becomes effective, the Company shall mail to the Holders of Notes affected
thereby a notice describing the amendment, supplement or waiver. Any failure of
the Company to mail such notice, or any defect therein, shall not, however, in
any way impair or affect the validity of any such amended or supplemental
Indenture or waiver. Subject to Sections 6.04 and 6.07, the Holders of a
majority in aggregate principal amount of the Notes then outstanding may waive
compliance in a particular instance by the Company with any provision of this
Indenture or the Notes. However, without the consent of each Holder of the Notes
affected thereby, an amendment or waiver may not, directly or indirectly: (i)
reduce the amount of Notes whose Holders must consent to an amendment; (ii)
reduce the rate of or change or have the effect of changing the time for payment
of premium, if any, and interest, including defaulted interest, on any Notes;
(iii) reduce the principal of or change or have the effect of changing the fixed
maturity of any Notes, or change the date on which any Notes may be subject to
redemption or repurchase, or reduce the redemption or repurchase price therefor;
(iv) make any Notes payable in money other than that stated in the Notes; (v)
make any change in provisions of this Indenture protecting the right of each
Holder to receive payment of premium, if any, principal of and interest on such
Note on or after the due date thereof or to bring suit to enforce such payment,
or permitting Holders of a majority in principal amount of the Notes to waive
Defaults or Events of Default; (vi) after the Company's obligation to purchase
Notes arises thereunder, amend, change or modify in any material respect the
obligation of the Company to make and consummate a Change of Control Offer in
the event of a Change of Control or make and consummate a Net Proceeds Offer
with respect to any Asset Sale that has been consummated or modify any of the
provisions or definitions with respect thereto; (vii) modify or change any
provision of this Indenture or the related definitions affecting the ranking of
the Notes or any Guarantee in a manner which adversely affects the Holders; or
(viii) release any Guarantor from any of its obligations under its Guarantee or
this Indenture otherwise than in accordance with the terms of this Indenture.

                  SECTION 9.03. Compliance with TIA.

                  Every amendment, waiver or supplement of this Indenture or the
Notes shall comply with the TIA as then in effect; 


                                       88



provided, however, that this Section 9.03 shall not of itself require that this
Indenture or the Trustee be qualified under the TIA or constitute any admission
or acknowledgment by any party hereto that any such qualification is required
prior to the time this Indenture and the Trustee are required by the TIA to be
so qualified.

                  SECTION 9.04. Revocation and Effect of Consents.

                  Until an amendment, waiver or supplement becomes effective, a
consent to it by a Holder is a continuing consent by the Holder and every
subsequent Holder of a Note or portion of a Note that evidences the same debt as
the consenting Holder's Note, even if notation of the consent is not made on any
Note. Subject to the following paragraph, any such Holder or subsequent Holder
may revoke the consent as to such Holder's Note or portion of such Note by
notice to the Trustee or the Company received before the date on which the
Trustee receives an Officers' Certificate certifying that the Holders of the
requisite principal amount of Notes have consented (and not theretofore revoked
such consent) to the amendment, supplement or waiver. An amendment, supplement
or waiver becomes effective upon receipt by the Trustee of such Officers'
Certificate and evidence of consent by the Holders of the requisite percentage
in principal amount of outstanding Notes.

                  The Company may, but shall not be obligated to, fix a Record
Date for the purpose of determining the Holders entitled to consent to any
amendment, supplement or waiver. If a Record Date is fixed, then notwithstanding
the second sentence of the immediately preceding paragraph, those Persons who
were Holders at such Record Date (or their duly designated proxies), and only
those Persons, shall be entitled to revoke any consent previously given, whether
or not such Persons continue to be Holders after such Record Date. No such
consent shall be valid or effective for more than 90 days after such Record Date
unless consents from Holders of the requisite percentage in principal amount of
outstanding Notes required hereunder for the effectiveness of such consents
shall have also been given and not revoked within such 90 day period.

                  SECTION 9.05. Notation on or Exchange of Notes.

                  If an amendment, supplement or waiver changes the terms of a
Note, the Trustee may require the Holder of such Note to deliver it to the
Trustee. The Trustee may place an appropriate notation on the Note about the
changed terms and return it to the Holder. Alternatively, if the Company or the
Trustee so determine, the Company in exchange for the Note 


                                       89



shall issue and the Trustee shall authenticate a new Note that reflects the
changed terms.

                  SECTION 9.06. Trustee To Sign Amendments, Etc.

                  The Trustee shall execute any amendment, supplement or waiver
authorized pursuant to this Article Nine; provided, however, that the Trustee
may, but shall not be obligated to, execute any such amendment, supplement or
waiver which affects the Trustee's own rights, duties or immunities under this
Indenture. In executing such amendment, supplement or waiver the Trustee shall
be entitled to receive indemnity reasonably satisfactory to it, and shall be
fully protected in relying upon an Opinion of Counsel and an Officers'
Certificate of the Company, stating that no Event of Default shall occur as a
result of such amendment, supplement or waiver and that the execution of such
amendment, supplement or waiver is authorized or permitted by this Indenture;
provided, however, that the legal counsel delivering such Opinion of Counsel may
rely as to matters of fact on one or more Officers' Certificates of the Company.
Such Opinion of Counsel shall not be an expense of the Trustee.


                                   ARTICLE TEN

                               GUARANTEE OF NOTES


                  SECTION 10.01. Unconditional Guarantee.

                  Subject to the provisions of this Article Ten, each Guarantor
hereby, jointly and severally, unconditionally and irrevocably guarantees, on a
senior basis (such guarantee to be referred to herein as a "Guarantee") to each
Holder of a Note authenticated and delivered by the Trustee and to the Trustee
and its successors and assigns, irrespective of the validity and enforceability
of this Indenture, the Notes or the obligations of the Company or any other
Guarantor to the Holders or the Trustee hereunder or thereunder, that: (a) the
principal of, premium, if any, and interest on the Notes (and any Liquidated
Damages payable thereon) shall be duly and punctually paid in full when due,
whether at maturity, upon redemption at the option of Holders pursuant to the
provisions of the Notes relating thereto, by acceleration or otherwise, and
interest on the overdue principal and (to the extent permitted by law) interest,
if any, on the Notes and all other obligations of the Company or the Guarantors
to the Holders or the Trustee hereunder or thereunder (including amounts due the
Trustee under Section 7.07) and all other obligations shall be promptly 


                                       90



paid in full or performed, all in accordance with the terms hereof and thereof;
and (b) in case of any extension of time of payment or renewal of any Notes or
any of such other obligations, the same shall be promptly paid in full when due
or performed in accordance with the terms of the extension or renewal, whether
at maturity, by acceleration or otherwise. Failing payment when due of any
amount so guaranteed, or failing performance of any other obligation of the
Company to the Holders under this Indenture or under the Notes, for whatever
reason, each Guarantor shall be obligated to pay, or to perform or cause the
performance of, the same immediately. An Event of Default under this Indenture
or the Notes shall constitute an event of default under this Guarantee, and
shall entitle the Holders of Notes to accelerate the obligations of the
Guarantors hereunder in the same manner and to the same extent as the
obligations of the Company.

                  Each of the Guarantors hereby agrees that its obligations
hereunder shall be unconditional, irrespective of the validity, regularity or
enforceability of the Notes or this Indenture, the absence of any action to
enforce the same, any waiver or consent by any Holder of the Notes with respect
to any provisions hereof or thereof, any release of any other Guarantor, the
recovery of any judgment against the Company, any action to enforce the same,
whether or not a Guarantee is affixed to any particular Note, or any other
circumstance which might otherwise constitute a legal or equitable discharge or
defense of a Guarantor. Each of the Guarantors hereby waives the benefit of
diligence, presentment, demand of payment, filing of claims with a court in the
event of insolvency or bankruptcy of the Company, any right to require a
proceeding first against the Company, protest, notice and all demands whatsoever
and covenants that its Guarantee shall not be discharged except by complete
performance of the obligations contained in the Notes, this Indenture and this
Guarantee. This Guarantee is a guarantee of payment and not of collection. If
any Holder or the Trustee is required by any court or otherwise to return to the
Company or to any Guarantor, or any custodian, trustee, liquidator or other
similar official acting in relation to the Company or such Guarantor, any amount
paid by the Company or such Guarantor to the Trustee or such Holder, this
Guarantee, to the extent theretofore discharged, shall be reinstated in full
force and effect. Each Guarantor further agrees that, as between it, on the one
hand, and the Holders of Notes and the Trustee, on the other hand, (a) subject
to this Article Ten, the maturity of the obligations guaranteed hereby may be
accelerated as provided in Article Six for the purposes of this Guarantee,
notwithstanding any stay, injunction or other prohibition preventing such
acceleration in respect of the obligations guaranteed hereby, and (b) in the
event of any acceleration 


                                       91



of such obligations as provided in Article Six, such obligations (whether or not
due and payable) shall forthwith become due and payable by the Guarantors for
the purpose of this Guarantee.

                  No stockholder, officer, director, employee or incorporator,
past, present or future, or any Guarantor , as such, shall have any personal
liability under this Guarantee by reason of his, her or its status as such
stockholder, officer, director, employee or incorporator.

                  Each Guarantor that makes a payment or distribution under its
Guarantee shall be entitled to a contribution from each other Guarantor, in an
amount pro rata, based on the net assets of each Guarantor determined in
accordance with GAAP.

                  SECTION 10.02. Limitations on Guarantees.

                  The obligations of any Guarantor under its Guarantee are
limited to the maximum amount which, after giving effect to all other contingent
and fixed liabilities of the Guarantor and payments made by or on behalf of any
other Guarantor in respect of the obligations of such Guarantor under its
Guarantee or pursuant to its contribution obligations under this Indenture, will
result in the obligations of the Guarantor under the Guarantee not constituting
a fraudulent conveyance or fraudulent transfer under any laws of the United
States, any state of the United States or the District of Columbia.

                  SECTION 10.03. Execution and Delivery of Guarantee.

                  To further evidence the Guarantee set forth in Section 10.01,
each Guarantor hereby agrees that a notation of such Guarantee, substantially in
the form of Exhibit E, shall be endorsed on each Note authenticated and
delivered by the Trustee. Such Guarantee shall be executed on behalf of each
Guarantor by either manual or facsimile signature of two Officers of the
Guarantor, each of whom, in each case, shall have been duly authorized to so
execute by all requisite corporate action. The validity and enforceability of
any Guarantee shall not be affected by the fact that it is not affixed to any
particular Note. Each of the Guarantors hereby agrees that its Guarantee set
forth in Section 10.01 shall remain in full force and effect notwithstanding any
failure to endorse on each Note a notation of such Guarantee.

                  If an Officer of a Guarantor whose signature is on this
Indenture or a Guarantee no longer holds that office at the time the Trustee
authenticates the Note on which such Guarantee 


                                       92



is endorsed or at any time thereafter, such Guarantor's Guarantee of such Note
shall be valid nevertheless.

                  The delivery of any Note by the Trustee, after the
authentication thereof hereunder, shall constitute due delivery of any Guarantee
set forth in this Indenture on behalf of each Guarantor.

                  SECTION 10.04. Release of Guarantors.

                  (a) If no Default exists or would exist under this Indenture,
upon (i) the sale or other disposition of all of the Capital Stock of any
Guarantor by the Company, or (ii) the sale or disposition of all or
substantially all of the assets of any Guarantor in compliance with all of the
terms of this Indenture, such Guarantor's Guarantee shall be released, and such
Guarantor shall be deemed released from all obligations under this Article Ten
without any further action required on the part of the Trustee or any Holder for
so long as it remains an Unrestricted Subsidiary. If such Guarantor is not so
released such Guarantor or the entity surviving such Guarantor, as applicable,
shall remain or be liable under its Guarantee as provided in this Article Ten.

                  (b) The Trustee shall deliver an appropriate instrument
evidencing the release of the Guarantor upon receipt of a request by the Company
or the Guarantor accompanied by an Officers' Certificate and an Opinion of
Counsel certifying as to the compliance with this Section 10.04, provided the
legal counsel delivering such Opinion of Counsel may rely as to matters of fact
on one or more Officers Certificates of the Company.

                  The Trustee shall execute any documents reasonably requested
by the Company or the Guarantor in order to evidence the release of the
Guarantor from its obligations under its Guarantee endorsed on the Notes and
under this Article Ten.

                  Except as set forth in Articles Four and Five and this Section
10.04, nothing contained in this Indenture or in any of the Notes shall prevent
any consolidation or merger of the Guarantor with or into the Company or shall
prevent any sale or conveyance of the property of the Guarantor as an entirety
or substantially as an entirety to the Company.

                  SECTION 10.05. Waiver of Subrogation.

                  Until this Indenture is discharged and all of the Notes are
discharged and paid in full, each Guarantor hereby irrevocably waives and agrees
not to exercise any claim or 


                                       93



other rights which it may now or hereafter acquire against the Company that
arise from the existence, payment, performance or enforcement of the Company's
obligations under the Notes or this Indenture and such Guarantor's obligations
under this Guarantee and this Indenture, in any such instance including, without
limitation, any right of subrogation, reimbursement, exoneration, contribution,
indemnification, and any right to participate in any claim or remedy of the
Holders against the Company, whether or not such claim, remedy or right arises
in equity, or under contract, statute or common law, including, without
limitation, the right to take or receive from the Company, directly or
indirectly, in cash or other property or by set-off or in any other manner,
payment or security on account of such claim or other rights. If any amount
shall be paid to any Guarantor in violation of the preceding sentence and any
amounts owing to the Trustee or the Holders of Notes under the Notes, this
Indenture, or any other document or instrument delivered under or in connection
with such agreements or instruments, shall not have been paid in full, such
amount shall have been deemed to have been paid to such Guarantor for the
benefit of, and held in trust for the benefit of, the Trustee or the Holders and
shall forthwith be paid to the Trustee for the benefit of itself or such Holders
to be credited and applied to the obligations in favor of the Trustee or the
Holders, as the case may be, whether matured or unmatured, in accordance with
the terms of this Indenture. Each Guarantor acknowledges that it will receive
direct and indirect benefits from the financing arrangements contemplated by
this Indenture and that the waiver set forth in this Section 10.05 is knowingly
made in contemplation of such benefits.

                  SECTION 10.06. Immediate Payment.

                  Each Guarantor agrees to make immediate payment to the Trustee
on behalf of the Holders of all Obligations owing or payable to the respective
Holders upon receipt of a demand for payment therefor by the Trustee to such
Guarantor in writing.

                  SECTION 10.07. Obligations Continuing.

                  The obligations of each Guarantor hereunder shall be
continuing and shall remain in full force and effect until all the obligations
have been paid and satisfied in full. Each Guarantor agrees with the Trustee
that it will from time to time deliver to the Trustee suitable acknowledgments
of this continued liability hereunder.


                                       94



                  SECTION 10.08. Obligations Reinstated.

                  The obligations of each Guarantor hereunder shall continue to
be effective or shall be reinstated, as the case may be, if at any time any
payment which would otherwise have reduced the obligations of any Guarantor
hereunder (whether such payment shall have been made by or on behalf of the
Company or by or on behalf of a Guarantor) is rescinded or reclaimed from any of
the Holders upon the insolvency, bankruptcy, liquidation or reorganization of
the Company or any Guarantor or otherwise, all as though such payment had not
been made. If demand for, or acceleration of the time for, payment by the
Company is stayed upon the insolvency, bankruptcy, liquidation or reorganization
of the Company, all such Indebtedness otherwise subject to demand for payment or
acceleration shall nonetheless be payable by each Guarantor as provided herein.

                  SECTION 10.09. Obligations Not Affected.

                  The obligations of each Guarantor hereunder shall not be
affected, impaired or diminished in any way by any act, omission, matter or
thing whatsoever, occurring before, upon or after any demand for payment
hereunder (and whether or not known or consented to by any Guarantor or any of
the Holders) which, but for this provision, might constitute a whole or partial
defense to a claim against any Guarantor hereunder or might operate to release
or otherwise exonerate any Guarantor from any of its obligations hereunder or
otherwise affect such obligations, whether occasioned by default of any of the
Holders or otherwise.

                  SECTION 10.10. Waiver.

                  Without in any way limiting the provisions of Section 10.01
hereof, each Guarantor hereby waives notice or proof of reliance by the Holders
upon the obligations of any Guarantor hereunder, and diligence, presentment,
demand for payment on the Company, protest or notice of dishonor of any of the
Obligations, or other notice or formalities to the Company of any kind
whatsoever.

                  SECTION 10.11. No Obligation To Take Action
                                 Against the Company.

                  Neither the Trustee nor any other Person shall have any
obligation to enforce or exhaust any rights or remedies or to take any other
steps under any security for the Obligations or against the Company or any other
Person or any property of the Company or any other Person before the Trustee is
entitled 


                                       95



to demand payment and performance by any or all Guarantors of their liabilities
and obligations under their Guarantees or under this Indenture.

                  SECTION 10.12. Dealing with the Company and Others.

                  The Holders, without releasing, discharging, limiting or
otherwise affecting in whole or in part the obligations and liabilities of any
Guarantor hereunder and without the consent of or notice to any Guarantor, may

                  (a) grant time, renewals, extensions, compromises,
         concessions, waivers, releases, discharges and other indulgences to the
         Company or any other Person;

                  (b) take or abstain from taking security or collateral from
         the Company or from perfecting security or collateral of the Company;

                  (c) release, discharge, compromise, realize, enforce or
         otherwise deal with or do any act or thing in respect of (with or
         without consideration) any and all collateral, mortgages or other
         security given by the Company or any third party with respect to the
         obligations or matters contemplated by this Indenture or the Notes;

                  (d)  accept compromises or arrangements from the Company;

                  (e) apply all monies at any time received from the Company or
         from any security upon such part of the Obligations as the Holders may
         see fit or change any such application in whole or in part from time to
         time as the Holders may see fit; and

                  (f) otherwise deal with, or waive or modify their right to
         deal with, the Company and all other Persons and any security as the
         Holders or the Trustee may see fit.

                  SECTION 10.13. Default and Enforcement.

                  If any Guarantor fails to pay in accordance with Section
10.06, the Trustee may proceed in its name as trustee hereunder in the
enforcement of the Guarantee of any such Guarantor and such Guarantor 's
obligations thereunder and hereunder by any remedy provided by law, whether by
legal proceedings or otherwise, and to recover from such Guarantor the
obligations.


                                       96



                  SECTION 10.14. Amendment, Etc.

                  No amendment, modification or waiver of any provision of this
Indenture relating to any Guarantor or consent to any departure by any Guarantor
or any other Person from any such provision will in any event be effective
unless it is signed by such Guarantor and the Trustee.

                  SECTION 10.15. Acknowledgment.

                  Each Guarantor hereby acknowledges communication of the terms
of this Indenture and the Notes and consents to and approves of the same.

                  SECTION 10.16. Costs and Expenses.

                  Each Guarantor shall pay on demand by the Trustee any and all
costs, fees and expenses (including, without limitation, legal fees on a
solicitor and client basis) incurred by the Trustee, its agents, advisors and
counsel or any of the Holders in enforcing any of their rights under any
Guarantee.

                  SECTION 10.17. No Waiver; Cumulative
                                 Remedies.

                  No failure to exercise and no delay in exercising, on the part
of the Trustee or the Holders, any right, remedy, power or privilege hereunder
or under this Indenture or the Notes, shall operate as a waiver thereof; nor
shall any single or partial exercise of any right, remedy, power or privilege
hereunder or under this Indenture or the Notes preclude any other or further
exercise thereof or the exercise of any other right, remedy, power or privilege.
The rights, remedies, powers and privileges in the Guarantee and under this
Indenture, the Notes and any other document or instrument between a Guarantor
and/or the Company and the Trustee are cumulative and not exclusive of any
rights, remedies, powers and privilege provided by law.

                  SECTION 10.18. Survival of Obligations.

                  Without prejudice to the survival of any of the other
obligations of each Guarantor hereunder, the obligations of each Guarantor under
Section 10.01 and shall be enforceable against such Guarantor without regard to
and without giving effect to any right of offset or counterclaim available to or
which may be asserted by the Company or any Guarantor.


                                       97



                  SECTION 10.19. Guarantee in Addition to Other
                                 Obligations.

                  The obligations of each Guarantor under its Guarantee and this
Indenture are in addition to and not in substitution for any other obligations
to the Trustee or to any of the Holders in relation to this Indenture or the
Notes (including the purchase agreement by and between the Company, the
Guarantors and the Initial Purchasers dated July 28, 1998 and the Registration
Rights Agreement).

                  SECTION 10.20. Severability.

                  Any provision of this Article Ten which is prohibited or
unenforceable in any jurisdiction shall not invalidate the remaining provisions
and any such prohibition or unenforceability in any jurisdiction shall not
invalidate or render unenforceable such provision in any other jurisdiction
unless its removal would substantially defeat the basic intent, spirit and
purpose of this Indenture and this Article Ten.

                  SECTION 10.21. Successors and Assigns.

                  Each Guarantee shall be binding upon and inure to the benefit
of each Guarantor and the Trustee and the other Holders and their respective
successors and permitted assigns, except that no Guarantor may assign any of its
obligations hereunder or thereunder.


                                 ARTICLE ELEVEN

                                  MISCELLANEOUS


                  SECTION 11.01. TIA Controls.

                  If any provision of this Indenture limits, qualifies, or
conflicts with another provision which is required to be included in this
Indenture by the TIA, the required provision shall control; provided, however,
that this Section 11.01 shall not of itself require that this Indenture or the
Trustee be qualified under the TIA or constitute any admission or acknowledgment
by any party hereto that any such qualification is required prior to the time
this Indenture and the Trustee are required by the TIA to be so qualified.


                                       98



                  SECTION 11.02. Notices.

                  Any notices or other communications required or permitted
hereunder shall be in writing, and shall be sufficiently given if made by hand
delivery, by telex, by telecopier or registered or certified mail, postage
prepaid, return receipt requested, addressed as follows:

                  if to the Company or the Guarantors:

                  Penhall Acquisition Corp.
                  1801 Penhall Way, P.O. Box 4609
                  Anaheim, California  92803
                  Facsimile No. 714-778-8437

                  Attention:  Martin Houge

                  with a copy to:

                  Dechert Price & Rhoads
                  30 Rockefeller Plaza
                  New York, New York  10112
                  Facsimile No. 212-698-3599

                  Attention:  Bruce B. Wood, Esq.

                  if to the Trustee:

                  United States Trust Company of New York
                  114 West 47th Street
                  New York, New York  10036
                  Facsimile No.

                  Attention:  Corporate Trust Administration

                  The Company, the Guarantors and the Trustee by written notice
to the other may designate additional or different addresses for notices to such
Person. Any notice or communication to the Company, the Guarantors or the
Trustee shall be deemed to have been given or made as of the date so delivered
if hand delivered; when answered back, if telexed; when receipt is acknowledged,
if faxed; one (1) Business Day after mailing by reputable overnight courier and
five (5) calendar days after mailing if sent by registered or certified mail,
postage prepaid (except that a notice of change of address shall not be deemed
to have been given until actually received by the addressee).

                  Any notice or communication mailed to a Holder shall be mailed
to him by first class mail or other equivalent means 


                                       99



at his address as it appears on the registration books of the Registrar ten (10)
days prior to such mailing and shall be sufficiently given to him if so mailed
within the time prescribed.

                  Failure to mail a notice or communication to a Holder or any
defect in it shall not affect its sufficiency with respect to other Holders. If
a notice or communication is mailed in the manner provided above, it is duly
given, whether or not the addressee receives it.

                  SECTION 11.03. Communications by Holders
                                 with Other Holders.

                  Holders may communicate pursuant to TIA Section 312(b) with 
other Holders with respect to their rights under this Indenture or the Notes. 
The Company, the Trustee, the Registrar and any other Person shall have the
protection of TIA Section 312(c).

                  SECTION 11.04. Certificate and Opinion as
                                 to Conditions Precedent.

                  Upon any request or application by the Company or the
Guarantors to the Trustee to take any action under this Indenture, the Company
shall furnish to the Trustee:

                  (1) an Officers' Certificate, in form and substance
         satisfactory to the Trustee, stating that, in the opinion of the
         signers, all conditions precedent to be performed by the Company, if
         any, provided for in this Indenture relating to the proposed action
         have been complied with; and

                  (2) an Opinion of Counsel stating that, in the opinion of such
         counsel, all such conditions precedent to be performed by the Company,
         if any, provided for in this Indenture relating to the proposed action
         have been complied with (which counsel, as to factual matters, may rely
         on an Officers' Certificate).

                  SECTION 11.05. Statements Required in
                                 Certificate or Opinion.

                  Each certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture, other than the Officers'
Certificate required by Section 4.06, shall include:

                  (1) a statement that the Person making such certificate or 
opinion has read such covenant or condition;


                                      100



                  (2) a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                  (3) a statement that, in the opinion of such Person, he has
         made such examination or investigation as is reasonably necessary to
         enable him to express an informed opinion as to whether or not such
         covenant or condition has been complied with; and

                  (4) a statement as to whether or not, in the opinion of each
         such Person, such condition or covenant has been complied with.

                  SECTION 11.06. Rules by Trustee, Paying
                                 Agent, Registrar.

                  The Trustee may make reasonable rules in accordance with the
Trustee's customary practices for action by or at a meeting of Holders. The
Paying Agent or Registrar may make reasonable rules for its functions.

                  SECTION 11.07. Legal Holidays.

                  A "Legal Holiday" used with respect to a particular place of
payment is a Saturday, a Sunday or a day on which banking institutions in New
York, New York or at such place of payment are not required to be open. If a
payment date is a Legal Holiday at such place, payment may be made at such place
on the next succeeding day that is not a Legal Holiday, and no interest shall
accrue for the intervening period.

                  SECTION 11.08. Governing Law.

                  THIS INDENTURE, THE NOTES AND THE GUARANTEES SHALL BE GOVERNED
BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK BUT
WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW. Each of the
parties hereto agrees to submit to the jurisdiction of the courts of the State
of New York in any action or proceeding arising out of or relating to this

                  Indenture, the Notes or the Guarantees.

                  SECTION 11.09. No Adverse Interpretation
                                 of Other Agreements.

                  This Indenture may not be used to interpret another indenture,
loan or debt agreement of the Company or any of its 


                                      101



Subsidiaries. Any such indenture, loan or debt agreement may not be used to
interpret this Indenture.

                  SECTION 11.10. No Personal Liability.

                  No director, officer, partner, member, employee or direct or
indirect stockholder, as such, past, present or future of the Company or any
Guarantor or any other successor entity, as such, shall have any personal
liability for any obligations of the Company or any Guarantor under the Notes,
the Guarantees, this Indenture or the Registration Rights Agreement or for any
claim based on, in respect of, or by reason of, such obligations or their
creation. Each Holder of Notes by accepting a Note waives and releases all such
liability and acknowledges and consents to the Transactions for purposes of
Section 506 of the California General Corporation Law and Section 10-640 of the
Arizona Business Corporation Act. The waiver and release are part of the
consideration for the issuance of the Notes. Such waiver may not be effective to
waive liabilities under the federal securities laws and it is the view of the
Commission that such a waiver is against public policy.

                  SECTION 11.11. Successors.

                  All agreements of the Company in this Indenture and the Notes
shall bind its successors. All agreements of the Trustee in this Indenture shall
bind its successors.

                  SECTION 11.12. Duplicate Originals.

                  All parties may sign any number of copies of this Indenture.
Each signed copy shall be an original, but all of them together shall represent
the same agreement.

                  SECTION 11.13. Severability.

                  In case any one or more of the provisions in this Indenture or
in the Notes shall be held invalid, illegal or unenforceable, in any respect for
any reason, the validity, legality and enforceability of any such provision in
every other respect and of the remaining provisions shall not in any way be
affected or impaired thereby, it being intended that all of the provisions
hereof shall be enforceable to the full extent permitted by law.

                  SECTION 11.14. Independence of Covenants.

                  All covenants and agreements in this Indenture and the Notes
shall be given independent effect so that if any particular 


                                      102



action or condition is not permitted by any of such covenants, the fact that it
would be permitted by an exception to, or otherwise be within the limitations
of, another covenant shall not avoid the occurrence of a Default or an Event of
Default if such action is taken or condition exists.


                                      103



                                   SIGNATURES

                  IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed, all as of the date first written above.


                                           PENHALL ACQUISITION CORP.,
                                           as Issuer


                                           By:  /s/  Paul D. Kaminski
                                              ----------------------------------
                                              Name:  Paul D. Kaminski
                                              Title: Vice President


                                           UNITED STATES TRUST COMPANY OF 
                                           NEW YORK, as Trustee


                                           By:  /s/  Christine C. Collins
                                              ----------------------------------
                                              Name:  Christine C. Collins
                                              Title: Assistant Vice President


                                       104



                                                                       EXHIBIT A


                                                                      CUSIP No.:


                            PENHALL ACQUISITION CORP.

                       12% SENIOR NOTE DUE 2006, SERIES A


No. [   ]                                                           $

                  PENHALL ACQUISITION CORP., an Arizona corporation (the
"Company"), for value received promises to pay to Cede & Co. or registered
assigns the principal sum of [ ] Dollars on August 1, 2006.

                  Interest Payment Dates:  February 1 and August 1, commencing 
February 1, 1999

                  Record Dates:  January 15 and July 15

                  Reference is made to the further provisions of this Note
contained herein, which will for all purposes have the same effect as if set
forth at this place.

                  IN WITNESS WHEREOF, the Company has caused this Note to be
signed manually or by facsimile by its duly authorized officers.



                                           PENHALL ACQUISITION CORP.


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



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


Dated:  August 4, 1998


                                      A-1



Certificate of Authentication

                  This is one of the 12% Senior Notes due 2006 referred to in
the within-mentioned Indenture.


                                           UNITED STATES TRUST COMPANY OF
                                           NEW YORK, as Trustee


                                           By:
                                              ------------------------------
                                                   Authorized Signatory

Date of Authentication:  August 4, 1998


                              (REVERSE OF SECURITY)

                       12% Senior Note due 2006, Series A


                  1. Interest. PENHALL ACQUISITION CORP., an Arizona corporation
(the "Company"), promises to pay interest on the principal amount of this Note
at the rate per annum shown above. Interest on the Notes will accrue from the
most recent date on which interest has been paid or, if no interest has been
paid, from August 4, 1998. The Company will pay interest semi-annually in
arrears on each Interest Payment Date, commencing February 1, 1999. Interest
will be computed on the basis of a 360-day year of twelve 30-day months and, in
the case of a partial month, the actual number of days elapsed.

                  The Company shall pay interest on overdue principal and on
overdue installments of interest from time to time on demand at the rate borne
by the Notes and on overdue installments of interest (without regard to any
applicable grace periods) to the extent lawful.

                  2. Method of Payment. The Company shall pay interest on the
Notes (except defaulted interest) to the Persons who are the registered Holders
at the close of business on the Record Date immediately preceding the Interest
Payment Date even if the Notes are cancelled on registration of transfer or
registration of exchange (including pursuant to an Exchange Offer (as defined in
the Registration Rights Agreement)) after such Record Date. Holders must
surrender Notes to a Paying Agent to collect principal payments. The Company
shall pay principal and interest in money of the United States that at the time
of payment is legal tender for payment of public and private debts ("U.S. Legal
Tender"). However, the Company may pay principal and interest by its check
payable in such U.S. Legal Tender. The Company may deliver any such interest
payment to the Paying Agent or to a Holder at the Holder's registered address.

                  3. Paying Agent and Registrar. Initially, United States Trust
Company of New York (the "Trustee") will act as Paying Agent and Registrar. The
Company may change any Paying Agent, Registrar or co-Registrar without notice to
the Holders.

                  4. Indenture. The Company issued the Notes under an Indenture,
dated as of August 1, 1998 (the "Indenture"), among the Company, each of the
Guarantors named therein and the Trustee. This Note is one of a duly authorized
issue of Initial Notes of the Company designated as its 12% Senior Notes due
2006, Series A (the "Initial Notes"). The Notes are limited 






                                      A-3



          (except as otherwise provided in the Indenture) in aggregate principal
          amount to $150,000,000, which may be issued under the Indenture;
          provided the principal amount of Initial Notes issued on the Issue
          Date will not exceed $100,000,000. The Notes include the Initial
          Notes, Private Exchange Notes and the Exchange Notes (as defined in
          the Indenture) issued in exchange for the Initial Notes pursuant to
          the Registration Rights Agreement. The Initial Notes and the Exchange
          Notes are treated as a single class of securities under the Indenture.
          Capitalized terms herein are used as defined in the Indenture unless
          otherwise defined herein. The terms of the Notes include those stated
          in the Indenture and those made part of the Indenture by reference to
          the Trust Indenture Act of 1939 (15 U.S. Code ss.ss. 77aaa-77bbbb)
          (the "TIA"), as in effect on the date of the Indenture.
          Notwithstanding anything to the contrary herein, the Notes are subject
          to all such terms, and Holders of Notes are referred to the Indenture
          and said Act for a statement of them. The Notes are general unsecured
          obligations of the Company.

                  Each Holder, by accepting a Note, agrees to be bound by all of
the terms and provisions of the Indenture, as the same may be amended from time
to time in accordance with its terms.

                  5. Redemption. The Notes will be redeemable, at the Company's
option, in whole at any time or in part from time to time, on and after August
1, 2003, upon not less than 30 nor more than 60 days' notice, at the following
redemption prices (expressed as percentages of the principal amount thereof) if
redeemed during the twelve-month period commencing on August 1 of the year set
forth below, plus, in each case, accrued and unpaid interest thereon, if any, to
the date of redemption:




       Year                                                     Percentage
       ----                                                     ----------
                                                             
       2003..................................................... 106.000%
       2004..................................................... 104.000%
       2005..................................................... 102.000%



                  At any time, or from time to time, on or prior to August 1,
2001, the Company may, at its option, use the net cash proceeds of one or more
Public Equity Offerings to redeem up to 30% of the sum of (i) the initial
aggregate principal amount of the Notes issued in the offering on the Issue Date
and (ii) the respective initial aggregate principal amount of the Notes issued
under the Indenture after the Issue Date, at a redemption price equal to 112.0%
of the principal amount thereof plus accrued and unpaid interest thereon, if
any, to the date of redemption; provided that at least 70% of the sum 



                                      A-4



of (i) the initial aggregate principal amount of the Notes issued in the
offering on the Issue Date and (ii) the respective initial aggregate principal
amounts of the Notes issued under the Indenture after the Issue Date remains
outstanding immediately after any such redemption. In order to effect the
foregoing redemption with the proceeds of any Public Equity Offering, the
Company shall make such redemption not more than 120 days after the consummation
of any such Public Equity Offering.

                  6. Notice of Redemption. Notice of redemption will be mailed
at least 30 days but not more than 60 days before the Redemption Date to each
Holder of Notes to be redeemed at such Holder's registered address. Notes in
denominations larger than $1,000 may be redeemed in part.

                  Except as set forth in the Indenture, if monies for the
redemption of the Notes called for redemption shall have been deposited with the
Paying Agent for redemption on such Redemption Date, then, unless the Company
defaults in the payment of such redemption price plus accrued interest, if any,
the Notes called for redemption will cease to bear interest from and after such
Redemption Date and the only right of the Holders of such Notes will be to
receive payment of the redemption price plus accrued interest, if any.

                  7. Offers to Purchase. Sections 4.14 and 4.15 of the Indenture
provide that, after certain Asset Sales (as defined in the Indenture) and upon
the occurrence of a Change of Control (as defined in the Indenture), and subject
to further limitations contained therein, the Company will make an offer to
purchase certain amounts of the Notes in accordance with the procedures set
forth in the Indenture.

                  8. Registration Rights. Pursuant to a registration rights
agreement among the Company, the Guarantors and the Initial Purchasers, the
Company and the Guarantors will be obligated to consummate an exchange offer
pursuant to which the Holder of this Note shall have the right to exchange this
Note for Exchange Notes (as defined in the Indenture), which have been
registered under the Securities Act, in like principal amount and having terms
identical in all material respects as the Initial Notes. The Holders of the
Initial Notes shall be entitled to receive certain additional interest payments
in the event such exchange offer is not consummated and upon certain other
conditions, all pursuant to and in accordance with the terms of the registration
rights agreement.

                  9. Denominations; Transfer; Exchange. The Notes are in
registered form, without coupons, and in denominations of $1,000 and integral
multiples of $1,000. A Holder shall regis-



                                      A-5



ter the transfer of or exchange Notes in accordance with the Indenture. The
Registrar may require a Holder, among other things, to furnish appropriate
endorsements and transfer documents and to pay certain transfer taxes or similar
governmental charges payable in connection therewith as permitted by the
Indenture. The Registrar need not register the transfer of or exchange of any
Notes or portions thereof selected for redemption.

                  10. Persons Deemed Owners. The registered Holder of a Note
shall be treated as the owner of it for all purposes.

                  11. Unclaimed Money. If money for the payment of principal or
interest remains unclaimed for one year, the Trustee and the Paying Agent will
pay the money back to the Company. After that, all liability of the Trustee and
such Paying Agent with respect to such money shall cease.

                  12. Discharge Prior to Redemption or Maturity. If the Company
at any time deposits with the Trustee U.S. Legal Tender or U.S. Government
Obligations sufficient to pay the principal of and interest on the Notes to
redemption or maturity and complies with the other provisions of the Indenture
relating thereto, the Company will be discharged from certain provisions of the
Indenture and the Notes (including certain covenants, but including, under
certain circumstances, its obligation to pay the principal of and interest on
the Notes but without affecting the rights of the Holders to receive such
amounts from such deposits).

                  13. Amendment; Supplement; Waiver. Subject to certain
exceptions set forth in the Indenture, the Indenture or the Notes may be amended
or supplemented with the written consent of the Holders of a majority in
aggregate principal amount of the Notes then outstanding, and any past Default
or Event of Default or noncompliance with any provision may be waived with the
written consent of the Holders of a majority in aggregate principal amount of
the Notes then outstanding. Without notice to or consent of any Holder, the
parties thereto may amend or supplement the Indenture or the Notes to, among
other things, cure any ambiguity, defect or inconsistency, provide for
uncertificated Notes in addition to or in place of certificated Notes, comply
with any requirements of the Commission in order to effect or maintain the
qualification of the Indenture under the TIA or comply with Article Five of the
Indenture or make any other change that does not adversely affect the rights of
any Holder of a Note.

                  14. Restrictive Covenants. The Indenture imposes certain
limitations on the ability of the Company and its Sub-



                                      A-6



sidiaries to, among other things, incur additional Indebtedness, pay dividends
or make certain other Restricted Payments, consummate certain Asset Sales, enter
into certain transactions with Affiliates, incur liens, impose restrictions on
the ability of a Subsidiary to pay dividends or make certain payments to the
Company and its Subsidiaries, merge or consolidate with any other Person or
sell, assign, transfer, lease, convey or otherwise dispose of all or
substantially all of the assets of the Company. Such limitations are subject to
a number of important qualifications and exceptions. Pursuant to Section 4.06 of
the Indenture, the Company must annually report to the Trustee on compliance
with such limitations.

                  15. Successors. When a successor assumes, in accordance with
the Indenture, all the obligations of its predecessor under the Notes and the
Indenture, the predecessor, subject to certain exceptions, will be released from
those obligations.

                  16. Defaults and Remedies. If an Event of Default occurs and
is continuing, the Trustee or the Holders of not less than 25% in aggregate
principal amount of Notes then outstanding may declare all the Notes to be due
and payable in the manner, at the time and with the effect provided in the
Indenture. Holders of Notes may not enforce the Indenture or the Notes except as
provided in the Indenture. The Trustee is not obligated to enforce the Indenture
or the Notes unless it has received indemnity reasonably satisfactory to it. The
Indenture permits, subject to certain limitations therein provided, Holders of a
majority in aggregate principal amount of the Notes then outstanding to direct
the Trustee in its exercise of any trust or power. The Trustee may withhold from
Holders of Notes notice of any continuing Default or Event of Default (except a
Default in payment of principal or interest when due, for any reason or a
Default in compliance with Article Five of the Indenture) if it determines that
withholding notice is in their interest.

                  17. Trustee Dealings with the Company and Its Subsidiaries.
The Trustee under the Indenture, in its individual or any other capacity, may
become the owner or pledgee of Notes and may otherwise deal with the Company,
its Subsidiaries or their respective Affiliates as if it were not the Trustee.

                  18. No Personal Liability. No director, officer, partner,
member, employee or direct or indirect stockholder, as such, past, present or
future of the Company or any Guarantor or any other successor entity, as such,
shall have any personal liability for any obligations of the Company or any
Guarantor under the Notes, the Guarantees, this Indenture or the Registration
Rights Agreement or for any claim based on, in respect 



                                      A-7



of, or by reason of, such obligations or their creation. Each Holder of Notes by
accepting a Note waives and releases all such liability and acknowledges and
consents to the Transactions for purposes of Section 506 of the California
General Corporation Law and Section 10-640 of the Arizona Business Corporation
Act. The waiver and release are part of the consideration for the issuance of
the Notes. Such waiver may not be effective to waive liabilities under the
federal securities laws and it is the view of the Commission that such a waiver
is against public policy.

                  19. Guarantees. This Note will be entitled to the benefits of
certain Guarantees, if any, made for the benefit of the Holders. Reference is
hereby made to the Indenture for a statement of the respective rights,
limitations of rights, duties and obligations thereunder of the Guarantors, the
Trustee and the Holders.

                  20. Authentication. This Note shall not be valid until the
Trustee or Authenticating Agent manually signs the certificate of authentication
on this Note.

                  21. Governing Law. This Note and the Indenture shall be
governed by and construed in accordance with the laws of the State of New York,
as applied to contracts made and performed within the State of New York, without
regard to principles of conflict of laws. Each of the parties hereto agrees to
submit to the jurisdiction of the courts of the State of New York in any action
or proceeding arising out of or relating to this Note.

                  22. Abbreviations and Defined Terms. Customary abbreviations
may be used in the name of a Holder of a Note or an assignee, such as: TEN COM
(= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint
tenants with right of survivorship and not as tenants in common), CUST (=
Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

                  23. CUSIP Numbers. Pursuant to a recommendation promulgated by
the Committee on Uniform Security Identification Procedures, the Company has
caused CUSIP numbers to be printed on the Notes as a convenience to the Holders
of the Notes. No representation is made as to the accuracy of such numbers as
printed on the Notes and reliance may be placed only on the other identification
numbers printed hereon.

                  The Company will furnish to any Holder of a Note upon written
request and without charge a copy of the Indenture, which has the text of this
Note. Requests may be made to: 



                                      A-8



Penhall Acquisition Corp., 1801 Penhall Way, P.O. Box 4609,
Anaheim, California 92803, Attention: Martin Houge.



                                      A-9




                                ASSIGNMENT FORM


                  If you the Holder want to assign this Note, fill in the form
below and have your signature guaranteed:

                  I or we assign and transfer this Note to:

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

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

- --------------------------------------------------------------------------------
(Print or type name, address and zip code and social security
or tax ID number of assignee)

and irrevocably appoint ___________________________, agent to transfer this Note
on the books of the Company. The agent may substitute another to act for him.


Dated:                Signed:
      -------------          -------------------------------
                             (Sign exactly as your name
                             appears on the other side of
                             this Note)


Signature Guarantee:
                    ------------------------------------------------------------

                  In connection with any transfer of this Note occurring prior
to the date which is the earlier of (i) the date of the declaration by the
Commission of the effectiveness of a registration statement under the Securities
Act of 1933, as amended (the "Securities Act") covering resales of this Note
(which effectiveness shall not have been suspended or terminated at the date of
the transfer) and (ii) the undersigned confirms that it has not utilized any
general solicitation or general advertising in connection with the transfer:

                                                  [Check One]

(1)  __           to the Company or a subsidiary thereof; or

(2)  __           pursuant to and in compliance with Rule 144A under the
                  Securities Act of 1933, as amended; or



                                      A-10



(3)  __           to an institutional "accredited investor" (as defined in
                  Rule 501(a)(1), (2), (3) or (7) under the Securities Act of
                  1933, as amended) that has furnished to the Trustee a signed
                  letter containing certain representations and agreements
                  (the form of which letter can be obtained from the Trustee);
                  or

(4)  __           outside the United states to a "foreign person" in
                  compliance with Rule 904 of Regulation S under the
                  Securities Act of 1933, as amended; or

(5)  __           pursuant to the exemption from registration provided by Rule
                  144 under the Securities Act of 1933, as amended; or

(6)  __           pursuant to an effective registration statement under the
                  Securities Act of 1933, as amended; or

(7)  __           pursuant to another available exemption from the
                  registration requirements of the Securities Act of 1933, as
                  amended.

and unless the box below is checked, the undersigned confirms that such Note is
not being transferred to an "affiliate" of the Company as defined in Rule 144
under the Securities Act of 1933, as amended (an "Affiliate"):

                           / /  The transferee is an Affiliate of the Company.

                  Unless one of the items is checked, the Trustee will refuse to
register any of the Notes evidenced by this certificate in the name of any
person other than the registered Holder thereof; provided, however, that if item
(3), (4), (5) or (7) is checked, the Company or the Trustee may require, prior
to registering any such transfer of the Notes, in their sole discretion, such
written legal opinions, certifications (including an investment letter in the
case of box (3) or (4)) and other information as the Trustee or the Company has
reasonably requested to confirm that such transfer is being made pursuant to an
exemption from, or in a transaction not subject to, the registration
requirements of the Securities Act of 1933, as amended.




                                      A-11




                  If none of the foregoing items are checked, the Trustee or
Registrar shall not be obligated to register this Note in the name of any person
other than the Holder hereof unless and until the conditions to any such
transfer of registration set forth herein and in Section 2.17 of the Indenture
shall have been satisfied.

Dated:                     Signed:
      -------------------         ----------------------------------------------
                                  (Sign exactly as name appears on the other
                                  side of this Note)

Signature Guarantee: 
                    ------------------------------------------------------------



                                      A-12




TO BE COMPLETED BY PURCHASER IF (2) ABOVE IS CHECKED

                  The undersigned represents and warrants that it is purchasing
this Note for its own account or an account with respect to which it exercises
sole investment discretion and that it and any such account is a "qualified
institutional buyer" within the meaning of Rule 144A under the Securities Act of
1933, as amended and is aware that the sale to it is being made in reliance on
Rule 144A and acknowledges that it has received such information regarding the
Company as the undersigned has requested pursuant to Rule 144A or has determined
not to request such information and that it is aware that the transferor is
relying upon the undersigned's foregoing representations in order to claim the
exemption from registration provided by Rule 144A.

Dated:
      ---------------------              ---------------------------------------
                                         NOTICE:  To be executed by an executive
                                                  officer



                                      A-13




                      [OPTION OF HOLDER TO ELECT PURCHASE]


                  If you want to elect to have this Note purchased by the
Company pursuant to Section 4.14 or Section 4.15 of the Indenture, check the
appropriate box:

                  Section 4.14 [     ]

                  Section 4.15 [     ]

                  If you want to elect to have only part of this Note purchased
by the Company pursuant to Section 4.14 or Section 4.15 of the Indenture, state
the amount you elect to have purchased:

$
 --------------------
Dated: 
      ----------------------            ----------------------------------------
                                            NOTICE: The signature on this
                                            assignment must correspond with the
                                            name as it appears upon the face of
                                            the within Note in every particular
                                            without alteration or enlargement
                                            or any change whatsoever and be
                                            guaranteed.


Signature Guarantee:  
                      ----------------------------------------------------------




                                      A-14





                                                                       EXHIBIT B


                                                                      CUSIP No.:

                            PENHALL ACQUISITION CORP.
                       12% SENIOR NOTE DUE 2006, SERIES B

No. [   ]                                                         $

                  PENHALL ACQUISITION CORP., an Arizona corporation (the
"Company"), for value received, promises to pay to Cede & Co. or registered
assigns the principal sum of [ ] Dollars on August 1, 2006.

                  Interest Payment Dates: February 1 and August 1, commencing
February 1, 1999

                  Record Dates:  January 15 and July 15

                  Reference is made to the further provisions of this Note
contained herein, which will for all purposes have the same effect as if set
forth at this place.

                  IN WITNESS WHEREOF, the Company has caused this Note to be
signed manually or by facsimile by its duly authorized officers.

                                        PENHALL ACQUISITION CORP.



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


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


Dated:  August 4, 1998




                                       B-1




Certificate of Authentication

                  This is one of the 12% Senior Notes due 2006, Series B
referred to in the within-mentioned Indenture.

                                         UNITED STATES TRUST COMPANY OF 
                                         NEW YORK, as Trustee


                                         By:
                                            ----------------------------
                                            Authorized Signatory

Date of Authentication:  August 4, 1998



                                       B-2



                              (REVERSE OF SECURITY)

                       12% Senior Note due 2006, Series B

                  1. Interest. PENHALL ACQUISITION CORP., an Arizona corporation
(the "Company"), promises to pay interest on the principal amount of this Note
at the rate per annum shown above. Interest on the Notes will accrue from the
most recent date on which interest has been paid or, if no interest has been
paid, from August 4, 1998. The Company will pay interest semi-annually in
arrears on each Interest Payment Date, commencing February 1, 1999. Interest
will be computed on the basis of a 360-day year of twelve 30-day months and, in
the case of a partial month, the actual number of days elapsed.

                  The Company shall pay interest on overdue principal and on
overdue installments of interest from time to time on demand at the rate borne
by the Notes and on overdue installments of interest (without regard to any
applicable grace periods) to the extent lawful.

                  2. Method of Payment. The Company shall pay interest on the
Notes (except defaulted interest) to the Persons who are the registered Holders
at the close of business on the Record Date immediately preceding the Interest
Payment Date even if the Notes are canceled on registration of transfer or
registration of exchange after such Record Date. Holders must surrender Notes to
a Paying Agent to collect principal payments. The Company shall pay principal
and interest in money of the United States that at the time of payment is legal
tender for payment of public and private debts ("U.S. Legal Tender"). However,
the Company may pay principal and interest by its check payable in such U.S.
Legal Tender. The Company may deliver any such interest payment to the Paying
Agent or to a Holder at the Holder's registered address.

                  3. Paying Agent and Registrar. Initially, United States Trust
Company of New York (the "Trustee") will act as Paying Agent and Registrar. The
Company may change any Paying Agent, Registrar or co-Registrar without notice to
the Holders.

                  4. Indenture. The Company issued the Notes under an Indenture,
dated as of August 1, 1998 (the "Indenture"), among the Company, each of the
Guarantors named therein and the Trustee. This Note is one of a duly authorized
issue of Exchange Notes of the Company designated as its 12% Senior Notes due
2006, Series B (the "Exchange Notes"). The Notes include the 12% Senior Notes
due 2006, Series A (the "Initial Notes") and the Exchange Notes, issued in
exchange for the Initial Notes pursuant to a registration rights agreement. The
Notes 



                                      B-3



are limited (except as otherwise provided in the Indenture) in aggregate
principal amount to $150,000,000, which may be issued under the Indenture;
provided the principal amount of Initial Notes issued on the Issue Date will not
exceed $100,000,000. The Initial Notes and the Exchange Notes are treated as a
single class of securities under the Indenture. Capitalized terms herein are
used as defined in the Indenture unless otherwise defined herein. The terms of
the Notes include those stated in the Indenture and those made part of the
Indenture by reference to the Trust Indenture Act of 1939 (15 U.S. Code 
Sections 77aaa-77bbbb) (the "TIA"), as in effect on the date of the Indenture.
Notwithstanding anything to the contrary herein, the Notes are subject to all
such terms, and Holders of Notes are referred to the Indenture and said Act for
a statement of them. The Notes are general unsecured obligations of the Company.

                  Each Holder, by accepting a Note, agrees to be bound by all of
the terms and provisions of the Indenture, as the same may be amended from time
to time in accordance with its terms.

                  5. Redemption. The Notes will be redeemable, at the Company's
option, in whole at any time or in part from time to time, on and after August
1, 2003, upon not less than 30 nor more than 60 days' notice, at the following
redemption prices (expressed as percentages of the principal amount thereof) if
redeemed during the twelve-month period commencing on August 1 of the years set
forth below, plus, in each case, accrued and unpaid interest, if any, thereon to
the date of redemption:




       Year                                                     Percentage
       ----                                                     ----------
                                                            
       2003..................................................... 106.000%
       2004..................................................... 104.000%
       2005 .................................................... 102.000%




                  At any time, or from time to time, on or prior to August 1,
2001, the Company may, at its option, use the net cash proceeds of one or more
Public Equity Offerings to redeem up to 30% of the sum of (i) the initial
aggregate principal amount of the Notes issued in the offering on the Issue Date
and (ii) the respective initial aggregate principal amounts of the Notes issued
under the Indenture after the Issue Date at a redemption price equal to 112.0%
of the principal amount thereof plus accrued and unpaid interest thereon, if
any, to the date of redemption; provided that at least 70% of the sum of (i) the
initial aggregate principal amount of the Notes issued in the offering on the
Issue Date and (ii) the respective initial aggregate principal amounts of the
Notes issued under the Indenture after the Issue Date remains outstanding
immedi-



                                      B-4



ately after any such redemption. In order to effect the foregoing redemption
with the proceeds of any Public Equity Offering, the Company shall make such
redemption not more than 120 days after the consummation of any such Public
Equity Offering.

                  6. Notice of Redemption. Notice of redemption will be mailed
at least 30 days but not more than 60 days before the Redemption Date to each
Holder of Notes to be redeemed at such Holder's registered address. Notes in
denominations larger than $1,000 may be redeemed in part.

                  Except as set forth in the Indenture, if monies for the
redemption of the Notes called for redemption shall have been deposited with the
Paying Agent for redemption on such Redemption Date, then, unless the Company
defaults in the payment of such redemption price plus accrued interest, if any,
the Notes called for redemption will cease to bear interest from and after such
Redemption Date and the only right of the Holders of such Notes will be to
receive payment of the redemption price plus accrued interest, if any.

                  7. Offers to Purchase. Sections 4.14 and 4.15 of the Indenture
provide that, after certain Asset Sales (as defined in the Indenture) and upon
the occurrence of a Change of Control (as defined in the Indenture), and subject
to further limitations contained therein, the Company will make an offer to
purchase certain amounts of the Notes in accordance with the procedures set
forth in the Indenture.

                  8. Denominations; Transfer; Exchange. The Notes are in
registered form, without coupons, and in denominations of $1,000 and integral
multiples of $1,000. A Holder shall register the transfer of or exchange Notes
in accordance with the Indenture. The Registrar may require a Holder, among
other things, to furnish appropriate endorsements and transfer documents and to
pay certain transfer taxes or similar governmental charges payable in connection
therewith as permitted by the Indenture. The Registrar need not register the
transfer of or exchange of any Notes or portions thereof selected for
redemption.

                  9. Persons Deemed Owners. The registered Holder of a Note
shall be treated as the owner of it for all purposes.

                  10. Unclaimed Money. If money for the payment of principal or
interest remains unclaimed for one year, the Trustee and the Paying Agent will
pay the money back to the Company. After that, all liability of the Trustee and
such Paying Agent with respect to such money shall cease.



                                      B-5



                  11. Discharge Prior to Redemption or Maturity. If the Company
at any time deposits with the Trustee U.S. Legal Tender or U.S. Government
Obligations sufficient to pay the principal of and interest on the Notes to
redemption and complies with the other provisions of the Indenture relating
thereto, the Company will be discharged from certain provisions of the Indenture
and the Notes (including certain covenants, including, under certain
circumstances, its obligation to pay the principal of and interest on the Notes
but without affecting the rights of the Holders to receive such amounts from
such deposit).

                  12. Amendment; Supplement; Waiver. Subject to certain
exceptions set forth in the Indenture, the Indenture or the Notes may be amended
or supplemented with the written consent of the Holders of a majority in
aggregate principal amount of the Notes then outstanding, and any past Default
or Event of Default or noncompliance with any provision may be waived with the
written consent of the Holders of a majority in aggregate principal amount of
the Notes then outstanding. Without notice to or consent of any Holder, the
parties thereto may amend or supplement the Indenture or the Notes to, among
other things, cure any ambiguity, defect or inconsistency, provide for
uncertificated Notes in addition to or in place of certificated Notes, comply
with any requirements of the Commission in order to effect or maintain the
qualification of the Indenture under the TIA or comply with Article Five of the
Indenture or make any other change that does not adversely affect the rights of
any Holder of a Note.

                  13. Restrictive Covenants. The Indenture imposes certain
limitations on the ability of the Company and its Subsidiaries to, among other
things, incur additional Indebtedness, pay dividends or make certain other
Restricted Payments, consummate certain Asset Sales, enter into certain
transactions with Affiliates, incur liens, impose restrictions on the ability of
a Subsidiary to pay dividends or make certain payments to the Company and its
Subsidiaries, merge or consolidate with any other Person or sell, assign,
transfer, lease, convey or otherwise dispose of all or substantially all of the
assets of the Company. Such limitations are subject to a number of important
qualifications and exceptions. Pursuant to Section 4.06 of the Indenture, the
Company must annually report to the Trustee on compliance with such limitations.

                  14. Successors. When a successor assumes, in accordance with
the Indenture, all the obligations of its predecessor under the Notes and the
Indenture, the predecessor, subject to certain exceptions, will be released from
those obligations.



                                      B-6



                  15. Defaults and Remedies. If an Event of Default occurs and
is continuing, the Trustee or the Holders of not less than 25% in aggregate
principal amount of Notes then outstanding may declare all the Notes to be due
and payable in the manner, at the time and with the effect provided in the
Indenture. Holders of Notes may not enforce the Indenture or the Notes except as
provided in the Indenture. The Trustee is not obligated to enforce the Indenture
or the Notes unless it has received indemnity reasonably satisfactory to it. The
Indenture permits, subject to certain limitations therein provided, Holders of a
majority in aggregate principal amount of the Notes then outstanding to direct
the Trustee in its exercise of any trust or power. The Trustee may withhold from
Holders of Notes notice of any continuing Default or Event of Default (except a
Default in payment of principal or interest when due, for any reason or a
Default in compliance with Article Five of the Indenture) if it determines that
withholding notice is in their interest.

                  16. Trustee Dealings with the Company and Its Subsidiaries.
The Trustee under the Indenture, in its individual or any other capacity, may
become the owner or pledgee of Notes and may otherwise deal with the Company,
its Subsidiaries or their respective Affiliates as if it were not the Trustee.

                  17. No Personal Liability. No director, officer, partner,
member, employee or direct or indirect stockholder, as such, past, present or
future of the Company or any Guarantor or any other successor entity, as such,
shall have any personal liability for any obligations of the Company or any
Guarantor under the Notes, the Guarantees, this Indenture or the Registration
Rights Agreement or for any claim based on, in respect of, or by reason of, such
obligations or their creation. Each Holder of Notes by accepting a Note waives
and releases all such liability and acknowledges and consents to the
Transactions for purposes of Section 506 of the California General Corporation
Law and Section 10-640 of the Arizona Business Corporation Act. The waiver and
release are part of the consideration for the issuance of the Notes. Such waiver
may not be effective to waive liabilities under the federal securities laws and
it is the view of the Commission that such a waiver is against public policy.

                  18. Guarantees. This Note will be entitled to the benefits of
certain Guarantees, if any, made for the benefit of the Holders. Reference is
hereby made to the Indenture for a statement of the respective rights,
limitations of rights, duties and obligations thereunder of the Guarantors, the
Trustee and the Holders.



                                      B-7



                  19. Authentication. This Note shall not be valid until the
Trustee or Authenticating Agent manually signs the certificate of authentication
on this Note.

                  20. Governing Law. This Note and the Indenture shall be
governed by and construed in accordance with the laws of the State of New York,
as applied to contracts made and performed within the State of New York, without
regard to principles of conflict of laws. Each of the parties hereto agrees to
submit to the jurisdiction of the courts of the State of New York in any action
or proceeding arising out of or relating to this Note.

                  21. Abbreviations and Defined Terms. Customary abbreviations
may be used in the name of a Holder of a Note or an assignee, such as: TEN COM
(= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint
tenants with right of survivorship and not as tenants in common), CUST (=
Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

                  22. CUSIP Numbers. Pursuant to a recommendation promulgated by
the Committee on Uniform Security Identification Procedures, the Company has
caused CUSIP numbers to be printed on the Notes as a convenience to the Holders
of the Notes. No representation is made as to the accuracy of such numbers as
printed on the Notes and reliance may be placed only on the other identification
numbers printed hereon.

                  The Company will furnish to any Holder of a Note upon written
request and without charge a copy of the Indenture, which has the text of this
Note. Requests may be made to: Penhall Acquisition Corp., 1801 Penhall Way, P.O.
Box 4609, Anaheim, California 92803, Attention: Martin Houge.



                                      B-8





                                 ASSIGNMENT FORM


                  If you the Holder want to assign this Note, fill in the form
below and have your signature guaranteed:

                  I or we assign and transfer this Note to:

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

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

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

(Print or type name, address and zip code and social security or tax ID number 
of assignee)


and irrevocably appoint _____________________________________________________,
agent to transfer this Note on the books of the Company. The agent may
substitute another to act for him.


Dated:                                 Signed:
      -------------------------               ----------------------------
                                       (Sign exactly as name appears 
                                       on the other side of this Note)

Signature Guarantee:




                                      B-9



                      [OPTION OF HOLDER TO ELECT PURCHASE]


                  If you want to elect to have this Note purchased by the
Company pursuant to Section 4.14 or Section 4.15 of the Indenture, check the
appropriate box:

                           Section 4.14 [     ]

                           Section 4.15 [     ]

                  If you want to elect to have only part of this Note purchased
by the Company pursuant to Section 4.14 or Section 4.15 of the Indenture, state
the amount you elect to have purchased:

$
 -------------------

Dated: _______________                         _________________________________
                                               NOTICE: The signature on this 
                                               assignment must correspond with 
                                               the name as it appears upon the 
                                               face of the within Note in every
                                               particular without alteration or 
                                               enlargement or any change whatso-
                                               ever and be guaranteed.


Signature Guarantee:_________________________



                                      B-10





                                                                       EXHIBIT C


                            Form of Certificate To Be
                          Delivered in Connection with
                    Transfers to Non-QIB Accredited Investors

                                                                        [ ], [ ]


[                           ]
[                           ]
[                           ]


Ladies and Gentlemen:

                  In connection with our proposed purchase of 12% Senior Notes
due 2006 (the "Notes") of Penhall Acquisition Corp., an Arizona corporation (the
"Company"), we confirm that:

                  1. We have received a copy of the Offering Memorandum (the
         "Offering Memorandum"), dated July 28, 1998, relating to the Notes and
         such other information as we deem necessary in order to make our
         investment decision. We acknowledge that we have read and agreed to the
         matters stated in the section entitled "Transfer Restrictions" of such
         Offering Memorandum.

                  2. We understand that any subsequent transfer of the Notes is
         subject to certain restrictions and conditions set forth in the
         Indenture relating to the Notes (the "Indenture") as described in the
         Offering Memorandum and the undersigned agrees to be bound by, and not
         to resell, pledge or otherwise transfer the Notes except in compliance
         with, such restrictions and conditions and the Securities Act of 1933,
         as amended (the "Securities Act"), and all applicable State securities
         laws.

                  3. We understand that the offer and sale of the Notes have not
         been registered under the Securities Act, and that the Notes may not be
         offered or sold within the United States or to, or for the account or
         benefit of, U.S. persons except as permitted in the following sentence.
         We agree, on our own behalf and on behalf of any accounts for which we
         are acting as hereinafter stated, that if we should sell any Notes, we
         will do so only (i) to the Company or any subsidiary thereof, (ii)
         inside the United States in accordance with Rule 144A under the
         Securities Act to a "qualified institutional buyer" (as defined in Rule
         144A promulgated under the Securities Act), 



                                      C-1



         (iii) inside the United States to an institutional "accredited
         investor" (as defined below) that, prior to such transfer, furnishes
         (or has furnished on its behalf by a U.S. broker-dealer) to the
         Trustee (as defined in the Indenture) a signed letter containing
         certain representations and agreements relating to the restrictions on
         transfer of the Notes (the form of which letter can be obtained from
         the Trustee), (iv) outside the United States in accordance with Rule
         904 of Regulation S promulgated under the Securities Act to non-U.S.
         persons, (v) pursuant to the exemption from registration provided by
         Rule 144 under the Securities Act (if available), or (vi) pursuant to
         an effective registration statement under the Securities Act, and we
         further agree to provide to any person purchasing any of the Notes
         from us a notice advising such purchaser that resales of the Notes are
         restricted as stated herein.

                  4. We understand that, on any proposed resale of any Notes, we
         will be required to furnish to the Trustee and the Company such
         certification, legal opinions and other information as the Trustee and
         the Company may reasonably require to confirm that the proposed sale
         complies with the foregoing restrictions. We further understand that
         the Notes purchased by us will bear a legend to the foregoing effect.

                  5. We are an institutional "accredited investor" (as defined
         in Rule 501(a)(1), (2), (3) or (7) of Regulation D under the Securities
         Act) and have such knowledge and experience in financial and business
         matters as to be capable of evaluating the merits and risks of our
         investment in the Notes, and we and any accounts for which we are
         acting are each able to bear the economic risk of our or their
         investment, as the case may be.

                  6. We are acquiring the Notes purchased by us for our account
         or for one or more accounts (each of which is an institutional
         "accredited investor") as to each of which we exercise sole investment
         discretion.




                                      C-2




                  You, the Company, the Trustee and others are entitled to rely
upon this letter and are irrevocably authorized to produce this letter or a copy
hereof to any interested party in any administrative or legal proceeding or
official inquiry with respect to the matters covered hereby.

                                              Very truly yours,

                                              [Name of Transferee]



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



                                      C-3




                                                                       EXHIBIT D

                       Form of Certificate To Be Delivered
                          in Connection with Transfers
                            Pursuant to Regulation S

                                                                        [ ], [ ]


[                        ]
[                        ]
[                        ]

                  Re: Penhall Acquisition Corp. (the "Company")
                      12% Senior Notes due 2006 (the "Notes")

Ladies and Gentlemen:

                  In connection with our proposed sale of aggregate principal
amount of the Notes, we confirm that such sale has been effected pursuant to and
in accordance with Regulation S under the U.S. Securities Act of 1933, as
amended (the "Securities Act"), and, accordingly, we represent that:

                  (1) the offer of the Notes was not made to a person in the 
         United States;

                  (2) either (a) at the time the buy offer was originated, the
         transferee was outside the United States or we and any person acting on
         our behalf reasonably believed that the transferee was outside the
         United States, or (b) the transaction was executed in, on or through
         the facilities of a designated off-shore securities market and neither
         we nor any person acting on our behalf knows that the transaction has
         been pre-arranged with a buyer in the United States;

                  (3) no directed selling efforts have been made in the United
         States in contravention of the requirements of Rule 903(b) or Rule
         904(b) of Regulation S, as applicable;

                  (4) the transaction is not part of a plan or scheme to evade
         the registration requirements of the Securities Act; and

                  (5) we have advised the transferee of the transfer
         restrictions applicable to the Notes.

                  You, the Company and counsel for the Company are entitled to
rely upon this letter and are irrevocably authorized 



                                      D-1



to produce this letter or a copy hereof to any interested party in any
administrative or legal proceedings or official inquiry with respect to the
matters covered hereby. Terms used in this certificate have the meanings set
forth in Regulation S.

                                            Very truly yours,

                                            [Name of Transferor]



                                            By:
                                               ------------------------
                                               Authorized Signature



                                      D-2





                                                                       EXHIBIT E

                                FORM OF GUARANTEE


                  For value received, the undersigned hereby unconditionally
guarantees, as principal obligor and not only as a surety, to the Holder of this
Note the cash payments in United States dollars of principal of, premium, if
any, and interest on this Note (and including Liquidated Damages payable
thereon) in the amounts and at the times when due and interest on the overdue
principal, premium, if any, and interest, if any, of this Note, if lawful, and
the payment or performance of all other obligations of the Company under the
Indenture (as defined below) or the Notes, to the Holder of this Note and the
Trustee, all in accordance with and subject to the terms and limitations of this
Note, Article Ten of the Indenture and this Guarantee. This Guarantee will
become effective in accordance with Article Ten of the Indenture and its terms
shall be evidenced therein. The validity and enforceability of any Guarantee
shall not be affected by the fact that it is not affixed to any particular Note.
Capitalized terms used but not defined herein shall have the meanings ascribed
to them in the Indenture dated as of August 1, 1998, among Penhall Acquisition
Corp., an Arizona corporation, as Company (the "Company") and United States
Trust Company of New York, as Trustee (the "Trustee"), as amended or
supplemented (the "Indenture").

                  The obligations of the undersigned to the Holders of Notes and
to the Trustee pursuant to this Guarantee and the Indenture are expressly set
forth in Article Ten of the Indenture and reference is hereby made to the
Indenture for the precise terms of the Guarantee and all of the other provisions
of the Indenture to which this Guarantee relates.

                  THIS GUARANTEE SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK WITHOUT GIVING EFFECT TO
PRINCIPLES OF CONFLICTS OF LAW. Each Guarantor hereby agrees to submit to the
jurisdiction of the courts of the State of New York in any action or proceeding
arising out of or relating to this Guarantee.

                  This Guarantee is subject to release upon the terms set forth
in the Indenture.




                                      E-1





                  IN WITNESS WHEREOF, each Guarantor has caused its Guarantee to
be duly executed.


Date:______________


[                   ], as
  Guarantor


By:________________
   Name:
   Title:


By:________________
   Name:
   Title:




                                       E-2