Common use of Mandatory Sinking Fund Redemption Clause in Contracts

Mandatory Sinking Fund Redemption. The Bonds are subject to --------------------------------- mandatory sinking fund redemption commencing April 1, 1997 and on each April 1 thereafter and the November 1 prior to maturity in the principal amounts set forth below. All such redemptions shall be at a redemption price of 100% of the principal amount thereof, without premium, plus accrued interest to the redemption date. APRIL 1 AMOUNT APRIL 1 AMOUNT 1997 $115,000 2003 $220,000 1998 $125,000 2004 $315,000 1999 $190,000 2005 $315,000 2000 $190,000 2006 $315,000 2001 $190,000 2007 $315,000 2002 $190,000 NOVEMBER 1, $185,000 2007

Mandatory Sinking Fund Redemption. The Bonds are subject to --------------------------------- mandatory sinking fund redemption commencing April 1, 1997 and on each April 1 thereafter and the November 1 prior to maturity Interest Payment Date occurring in the principal amounts month of May in each of the years set forth below. All such redemptions shall be below commencing on the Interest Payment Date occurring in May of 2003 (each, a "Mandatory Sinking Account Payment Date"), at a redemption price of equal to 100% of the principal amount thereof, without premium, thereof plus accrued interest to the redemption date. APRIL 1 AMOUNT APRIL 1 AMOUNT 1997 as follows: Year Account Payments ---- ---------------- 2003 $535,000 2004 $810,000 2005 $655,000 2006 $690,000 2007 $105,000 2008 $110,000 2009 $115,000 2003 $220,000 1998 2010 $125,000 2004 2011 $315,000 1999 130,000 2012 $190,000 2005 135,000 2013 $315,000 2000 140,000 2014* $190,000 2006 $315,000 2001 $190,000 2007 $315,000 2002 $190,000 NOVEMBER 1, $185,000 2007150,000 *maturity

Mandatory Sinking Fund Redemption. The Bonds are subject to --------------------------------- mandatory sinking fund redemption commencing April 1, 1997 and on each April 1 thereafter and the November 1 prior to maturity Interest Payment Date occurring in the principal amounts month of May in each of the years set forth below. All such redemptions shall be below commencing on the Interest Payment Date occurring on June 3 of 1998 (each, a "Mandatory Sinking Account Payment Date"), at a redemption price of equal to 100% of the principal amount thereof, without premium, thereof plus accrued interest to the redemption date. APRIL 1 AMOUNT APRIL 1 AMOUNT 1997 as follows: BONDS Mandatory Sinking Year Account Payments 1999 $115,000 125,000.00 2000 $120,000.00 2001 $125,000.00 2002 $130,000.00 2003 $220,000 1998 $125,000 140,000.00 2004 $315,000 1999 $190,000 150,000.00 2005 $315,000 2000 $190,000 155,000.00 2006 $315,000 2001 $190,000 165,000.00 2007 $315,000 2002 175,000.00 2008 $190,000 NOVEMBER 1, 185,000.00 2009 $185,000 2007195,000.00 2010 $205,000.00 2011 $220,000.00 2012 $230,000.00 *2013 $245,000.00 *Final maturity

Mandatory Sinking Fund Redemption. The Bonds are subject to --------------------------------- mandatory sinking fund redemption commencing April 1, 1997 and on each April 1 thereafter and the November 1 prior to maturity Interest Payment Date occurring in the principal amounts month of January in each of the years set forth below. All such redemptions shall be below commencing on the Interest Payment Date occurring in January of 2000 (each, a "Mandatory Sinking Fund Payment Date"), at a redemption price of equal to 100% of the principal amount thereof, without premium, thereof plus accrued interest to the redemption date. APRIL 1 AMOUNT APRIL 1 AMOUNT 1997 as follows: Mandatory Sinking Year Fund Payments ---- ----------------- 2000 $115,000 560,000 2001 $560,000 2002 $560,000 2003 $220,000 1998 $125,000 560,000 2004 $315,000 1999 $190,000 560,000 2005 $315,000 2000 $190,000 560,000 2006 $315,000 2001 $190,000 560,000 2007 $315,000 2002 560,000 2008 $190,000 NOVEMBER 560,000 2009 $575,000 2010 $580,000 2011 $580,000 2012 $580,000 2013 $145,000* *Final maturity of the Bonds is January 1, $185,000 20072013