| The amount of revenue obligation securities issued to refund |
| securities previously issued may not be taken into account in |
| determining the principal amount of securities outstanding, |
| provided that proceeds of the refunding securities are applied as |
| promptly as possible to the refunding of the previously issued |
| securities. In computing the total amount of revenue obligation |
| securities of the authority that may at any time be outstanding |
| for any purpose, the amounts of the outstanding revenue |
| obligation securities that have been issued as capital |
| appreciation bonds or as similar instruments are valued as of any |
| date of calculation at their then current accreted value rather |
| than their face value. |