Document:

<PAGE>

                                                                   EXHIBIT 10.18

                                                          Amendment to Documents

                   AMENDMENT NO. 1 TO BUSINESS LOAN AGREEMENT

     This Amendment No. 1 (the "Amendment") dated as of September 28, 2001, is
between Bank of America, N.A. (the "Bank") and U.S, Laboratories Inc. (the
"Borrower").

                                    RECITALS
                                    --------

     A.  The Bank and the Borrower entered into a certain Business Loan
Agreement dated as of March 29, 2001 (the "Agreement").

     B.  The Bank and the Borrower desire to amend the Agreement.

                                    AGREEMENT
                                    ---------

     1.  Definitions. Capitalized terms used but not defined in this Amendment
         -----------
shall have the meaning given to them in the Agreement.

     2.  Amendments.  The Agreement is hereby amended as follows:
         ----------

          2.1      In Paragraph 2.2 of the Agreement, the date "May 31, 2003" is
                   substituted for the date "May 31, 2002".

          2.2      Paragraph 8.5 of the Agreement is deleted in its entirety.

          2.3      Paragraph 9.11 of the Agreement is amended to read in its
                   entirety as follows:

                   "9.11 Tax Matters.  The Borrower has no knowledge of any
                   pending assessments or adjustments of its income tax for any
                   year and all taxes due have been paid."

     3.  Representations; and Warranties. When the Borrower signs this
         -------------------------------
Amendment, the Borrower represents and warrants to the Bank that: (a) there is
no event which is, or with notice or lapse of time or both would be, a default
under the Agreement except those events, if any, that have been disclosed in
writing to the Bank or waived in writing by the Bank, (b) the representations
and warranties in the Agreement are true as of the date of this Amendment as if
made on the date of this Amendment, (e) this Amendment is within the Borrower's
powers, has been duly authorized, and does not conflict with any of the
Borrower's organizational papers, and (d) this Amendment does not conflict with
any law, agreement, or obligation by which the Borrower is bound.

     4.  Conditions. This Amendment will be effective when the Bank receives the
         ----------
following items, in form and content acceptable to the Bank.

                                      -1-

<PAGE>

         4.1  Certificate of good standing for the Borrower from its state of
              formation.

     5.  Effect of Amendment. Except as provided in this Amendment, all of the
         -------------------
terms and conditions of the Agreement shall remain in full force and effect.

This Amendment is executed as of the date stated at the beginning of this
Amendment.

BANK OF AMERICA, N.A.                       U.S. LABORATORIES, INC.

X    /s/                                    X     /s/ Dickerson Wright
 --------------------------                   ----------------------------------
By:                                         By:  Dickerson Wright, Chairman/
                                                 Chief Executive Officer

                                      -2-Prepared by R.R. Donnelley Financial -- Key Employees Stock Option Plan

 EXHIBIT 10.2.1 
  
  
 CHART INDUSTRIES, INC. 
 AMENDMENT NO. 1 TO 
 KEY EMPLOYEES
STOCK OPTION PLAN 
  
  
 Chart Industries, Inc. (“Chart”) hereby adopts
Amendment No. 1 to the Chart Industries, Inc. Key Employees Stock Option Plan (the “Plan”) subject to the terms and provisions set forth below. Capitalized terms used but not defined herein shall have the meanings as set forth in the Plan.

  
 1.  Section 6 of the Plan is deleted in its entirety and replaced as follows: 
  
 “6.  Shares Subject to the Plan.    Subject to the provisions of Section 9 concerning payment for stock
appreciation rights in shares of Common Stock and subject to the provisions of the next succeeding paragraph of this Section 6, the aggregate number of shares of Common Stock for which options may be granted under the Plan shall be Five Hundred
Fifteen Thousand (515,000) shares of Common Stock. Either treasury or authorized and unissued shares of Common Stock, or both, in such amounts, within the maximum limits of the Plan, as the Committee shall from time to time determine, may be so
issued. All shares of Common Stock which are the subject of any lapsed, expired or terminated options may be made available for reoffering under the Plan to any Key Employee. If an option granted under this Plan is exercised pursuant to the terms
and conditions determined by the Committee under Subsection 7(d), and a stock appreciation right is not granted in conjunction with the option pursuant to Section 9, any shares of Common Stock which are the subject thereof shall not thereafter be
available for reoffering under the Plan to any Key Employee. If a stock appreciation right is granted in conjunction with an option pursuant to Section 9, and if the option agreement with the Optionee provides that exercise of the stock appreciation
right shall be in lieu of exercise of the options, and the stock appreciation right is thereafter exercised in whole or in part, then the option or the portion thereof with respect to which the stock appreciation right was exercised shall be deemed
to have been canceled and the shares of Common Stock which otherwise would have been issued upon exercise of such option, to the extent not used in payment for the stock appreciation rights, may be made available for reoffering under the Plan to any
Key Employee. 
  
 In the event that subsequent to the date of adoption of the Plan by the Board, the outstanding shares of Common
Stock are, as a result of a stock split, stock dividend, combination or exchange of shares, exchange for other securities, reclassification, reorganization, redesignation, merger, consolidation, recapitalization or other such change, including
without limitation any transaction described in Section 424(a) of the Code, increased or decreased or changed into or exchanged for a different number or kind of shares of stock or other securities of the Company, then (i) there shall automatically
be substituted for each share of Common Stock subject to an unexercised option granted under the Plan and each share of Common Stock available for additional grants of options under the Plan the number and kind of shares of stock or other

  
 securities into which each outstanding share of Common Stock shall be exchanged, (ii) the
option price per share of Common Stock or unit of securities shall be increased or decreased proportionately so that the aggregate purchase price for the securities subject to the option shall remain the same as immediately prior to such event, and
(iii) the Committee shall make such other adjustments to the securities subject to options, the provisions of the Plan, and option agreements as may be appropriate, equitable and in compliance with the provisions of Section 424(a) of the Code to the
extent applicable and any such adjustment shall be final, binding and conclusive as to each Optionee. Any such adjustment shall provide for the elimination of fractional shares.” 
  
 IN WITNESS WHEREOF, CHART INDUSTRIES, INC., by its appropriate officers duly authorized, has executed this instrument this 2nd day of May, 1995. 
  
  
 
	 CHART INDUSTRIES, INC.
 
	 
	 By:
 	 	 

	  	 	 Arthur S. Holmes,
 Chairman and Chief
 Executive Officer
 

 
  
  
 
	 
	 And:
 	 	 

	  	 	 Don A. Baines,
 Chief Financial Officer
 and TreasurerPrepared by R.R. Donnelley Financial -- Key Employees Stock Option Plan

 EXHIBIT 10.2.2 
  
 CHART
INDUSTRIES, INC. 
 AMENDMENT NO. 2 TO 
 KEY EMPLOYEES STOCK OPTION PLAN 

 
 Chart Industries, Inc. (“Chart”) hereby adopts Amendment No. 2 to the Chart Industries, Inc. Key Employees Stock Option Plan (the
“Plan”) subject to the terms and provisions set forth below. Capitalized terms used but not defined herein shall have the meanings as set forth in the Plan. 
  
 1.  Section 6 of the Plan is deleted in its entirety and replaced as follows: 
  
 “6.  Shares Subject to the Plan.    Subject to the provisions of Section 9 concerning payment for stock appreciation rights in shares of Common Stock and subject to the
provisions of the next succeeding paragraph of this Section 6, the aggregate number of shares of Common Stock for which options may be granted under the Plan shall be Six Hundred Fifteen Thousand (615,000) shares of Common Stock. Either treasury or
authorized and unissued shares of Common Stock, or both, in such amounts, within the maximum limits of the Plan, as the Committee shall from time to time determine, may be so issued. All shares of Common Stock which are the subject of any lapsed,
expired or terminated options may be made available for reoffering under the plan to any Key Employee. If an option granted under this Plan is exercised pursuant to the terms and conditions determined by the Committee under Subsection 7(d), and a
stock appreciation right is not granted in conjunction with the option pursuant to Section 9, any shares of Common Stock which are the subject thereof shall not thereafter be available for reoffering under the Plan to any Key Employee. If a stock
appreciation right is granted in conjunction with an option pursuant to Section 9, and if the option agreement with the Optionee provides that exercise of the stock appreciation right shall be in lieu of exercise of the options, and the stock
appreciation right is thereafter exercised in whole or in part, then the option or the portion thereof with respect to which the stock appreciation right was exercised shall be deemed to have been canceled and the shares of Common Stock which
otherwise would have been issued upon exercise of such option, to the extent not used in payment for the stock appreciation rights, may be made available for reoffering under the Plan to any Key Employee. 
  
 In the event that subsequent to the date of adoption of the Plan by the Board, the outstanding shares of Common Stock are, as a result of a stock split,
stock dividend, combination or exchange of shares, exchange for other securities, reclassification, reorganization, redesignation, merger, consolidation, recapitalization or other such change, including without limitation any transaction described
in Section 424(a) of the Code, increased or decreased or changed into or exchanged for a different number or kind of shares of stock or other securities of the Company, then (i) there shall automatically be substituted for each share of Common Stock
subject to an unexercised option granted under the Plan and each share of Common Stock available for additional grants of options under the Plan the number and kind of shares of stock or other 

  
 securities into which each outstanding share of Common Stock shall be exchanged, (ii) the
option price per share of Common Stock or unit of securities shall be increased or decreased proportionately so that the aggregate purchase price for the securities subject to the option shall remain the same as immediately prior to such event, and
(iii) the Committee shall make such other adjustments to the securities subject to options, the provisions of the Plan, and option agreements as may be appropriate, equitable and in compliance with the provisions of Section 424(a) of the Code to the
extent applicable and any such adjustment shall be final, binding and conclusive as to each Optionee. Any such adjustment shall provide for the elimination of fractional shares.” 
  
 2.  A new Section 17 is added to the Plan as follows: 
  
 “17.  Grants to Any One Individual.    The maximum number of shares subject to options which may be granted to any one Key Employee during the term of the Plan is three hundred thousand (300,000) of
the shares available under the Plan.”

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00037-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00037-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00037-of-00352.parquet"}]]