Common use of Total Debt to Annualized EBITDA Clause in Contracts

Total Debt to Annualized EBITDA. The Borrower will not permit the ratio of (i) Total Debt outstanding on any day from and including (A) the last day of any fiscal quarter set forth below through (B) the day immediately preceding the last day of the immediately following fiscal quarter to (ii) Annualized EBITDA for the period ending on the date referred to in clause (i)(A) above to exceed the ratio set forth opposite such date: ----------------------------------------------- Fiscal Quarter Ending On Ratio --------- ----- ----------------------------------------------- September 30, 2003 25.0 to 1.00 ----------------------------------------------- December 31, 2003 20.0 to 1.00 ----------------------------------------------- March 31, 2004 16.0 to 1.00 ----------------------------------------------- June 30, 2004 13.0 to 1.00 ----------------------------------------------- September 30, 2004 10.0 to 1.00 ----------------------------------------------- December 31, 2004 8.5 to 1.00 ----------------------------------------------- March 31, 2005 7.5 to 1.00 ----------------------------------------------- June 30, 2005 6.5 to 1.00 ----------------------------------------------- September 30, 2005 5.5 to 1.00 ----------------------------------------------- December 31, 2005 and thereafter 4.5 to 1.00 -----------------------------------------------

Total Debt to Annualized EBITDA. The Borrower and NCH will not permit the ratio of (iA) Total Debt of NCI and its Consolidated Subsidiaries outstanding on any day from and including (A) the last day as of any fiscal quarter set forth below through date of determination to (B) Annualized EBITDA of the day Borrower and its Consolidated Subsidiaries for the fiscal quarter ending on or immediately preceding such date, during the last day of the immediately following fiscal quarter to (ii) Annualized EBITDA for the period ending on the date referred to in clause (i)(A) above periods set forth below, to exceed the correlative ratio set forth opposite such dateindicated: ----------------------------------------------- Fiscal Quarter Ending ======================================================================================================= MAXIMUM TOTAL DEBT TO PERIOD ANNUALIZED EBITDA ------ ----------------- ------------------------------------------------------------------------------------------------------- On Ratio --------- ----- ----------------------------------------------- September June 30, 2003 25.0 to 1.00 ----------------------------------------------- 6.50:1.00 ------------------------------------------------------------------------------------------------------- July 1, 2003 through and including December 31, 2003 20.0 to 1.00 ----------------------------------------------- March 315.25:1.00 ------------------------------------------------------------------------------------------------------- January 1, 2004 16.0 to 1.00 ----------------------------------------------- June 30, 2004 13.0 to 1.00 ----------------------------------------------- September 30, 2004 10.0 to 1.00 ----------------------------------------------- through and including December 31, 2004 8.5 to 1.00 ----------------------------------------------- March 31, 2005 7.5 to 1.00 ----------------------------------------------- June 30, 2005 6.5 to 1.00 ----------------------------------------------- September 30, 2005 5.5 to 1.00 ----------------------------------------------- December 314.00:1.00 ------------------------------------------------------------------------------------------------------- January 1, 2005 and thereafter 4.5 to 1.00 -----------------------------------------------3.00:1.00 =======================================================================================================

Total Debt to Annualized EBITDA. The Borrower and NCH will not permit the ratio of (i) Total Debt of NCI and its Consolidated Subsidiaries outstanding on any day from and including (A) as of the last day of any fiscal quarter (which last day occurs in any period set forth below through (Bbelow) the day immediately preceding the last day of the immediately following fiscal quarter to (ii) Annualized EBITDA of the Borrower and its Consolidated Subsidiaries for the period fiscal quarter ending on such date, beginning with the date referred to in clause (i)(A) above fiscal quarter ending December 31, 2002, to exceed the correlative ratio set forth opposite such dateindicated: ----------------------------------------------- Fiscal Quarter Ending On Ratio --------- ----- ----------------------------------------------- September 30, 2003 25.0 to 1.00 ----------------------------------------------- December 31, 2003 20.0 to 1.00 ----------------------------------------------- March 31, 2004 16.0 to 1.00 ----------------------------------------------- June 30, 2004 13.0 to 1.00 ----------------------------------------------- September 30, 2004 10.0 to 1.00 ----------------------------------------------- December 31, 2004 8.5 to 1.00 ----------------------------------------------- March 31, 2005 7.5 to 1.00 ----------------------------------------------- June 30, 2005 6.5 to 1.00 ----------------------------------------------- September 30, 2005 5.5 to 1.00 ----------------------------------------------- December 31, 2005 ================================================ MAXIMUM TOTAL DEBT TO PERIOD ANNUALIZED EBITDA ------------------------------------------------ 12/31/02 10.50:1.00 ------------------------------------------------ 01/01/03 - 03/31/03 7.00:1.00 ------------------------------------------------ 04/01/03 - 06/30/03 6.00:1.00 ------------------------------------------------ 07/01/03 - 12/31/03 5.00:1.00 ------------------------------------------------ 01/01/04 - 12/31/04 4.00:1.00 ------------------------------------------------ 01/01/05 and thereafter 4.5 to 1.00 -----------------------------------------------Thereafter 3.00:1.00 ================================================