SECTION 9. The GRANTEE shall have the right and authority to adjust any existing toll being charged the users of the Expressways under the following guidelines:
a) Adjustments may be made not more than once a year.
b) Adjustments shall be made solely on the basis of the following formula, which is subject to amendment, modification or repeal as may from time to time be agreed upon between the GRANTEE and the Toll Regulatory Board:
[Formula 1]
R = Adjusted Toll Rate
Ro = Current Toll Rate
I
L = Prevailing Manila Reference Rate Plus Bankers’ Association of the Philippines (BAP) Intermediation Index plus the going spread as quoted by the major Commercial banks, or any other index rate which may be more reflective of the prevailing conditions in the local financial markets.
I
Lo = Prevailing local interest rate (averaged as above) when current toll rate is approved.
I
F = Prevailing foreign interest rate at time of adjustment which shall be the average of LIBOR and US prime rate.
I
Fo = Prevailing foreign interest rate (averaged as above) when current toll rate is approved.
a = Ratio of local debt to total debt.
a’ = Ratio of foreign debt to total debt.
E = CB foreign exchange ($ to P) rate (selling rate at time of adjustment).
Eo = CB foreign exchange ($ to P) rate (selling rate when current toll rate is approved).
L = Consumer price index for Metro Manila at time of adjustment.
Lo = Consumer price index for Metro Manila when current toll rate is approved.
C = Construction Materials Price Index at the time of adjustment computed as the sum of the unit prices of cement, asphalt concrete, reinforcing bars and diesel as authorized by government price control authority and if not controlled, as quoted in the open market.
Co = Construction Material Price Index when last toll rate was approved computed as the sum of the unit prices of cement, asphalt concrete, reinforcing bars and diesel as authorized by government price control authority and if not controlled, as quoted in the open market.
The procedure to be followed for any adjustment is as follows:
(a) On or before the 30th day of September of each year, the GRANTEE shall submit to the Toll Regulatory Board a written report/statement on the then current application of the formula.
(b) Any adjustment in the then current toll rate(s) resulting from the application of the formula and indicated in the aforesaid written statement shall (i) be published once by the GRANTEE in a newspaper of general circulation not later than November 30 of each year and (ii) be enforceable and collected by the GRANTEE effective on the first day of January of the immediately succeeding year.
(c) Any interested Expressways user shall have the right to file, within a period of ninety (90) days after the date of publication of the adjusted toll rate(s), a petition with the Toll Regulatory Board for a review of the adjusted toll rate(s); provided, however, that, notwithstanding the filing of such petition and the pendency of the resolution thereof, the adjusted toll shall be enforceable and collectible by the GRANTEE effective on the first day of January in accordance with the immediately preceding paragraph.
d) The Toll Regulatory Board, at a public hearing called for the purpose after due notice, shall then conduct a review of the adjusted toll to determine the propriety thereof based on the authorized formula provided in Section 9 (b) hereof. The Toll Regulatory Board shall render and promulgate its decision not later than 120 days from date of receipt of the petition.
e) Decisions of the Toll Regulatory Board on petitions for review of adjusted toll shall be appealable to the Office of the President within ten (10) days from the promulgation thereof.
f) The GRANTEE may be required to post a bond in such amount and from such surety or sureties and under such terms and conditions as the Toll Regulatory Board shall fix in case of any petition for review of, or appeal from, decisions of the Toll Regulatory Board.
g) In case it is finally determined, after a review by the Toll Regulatory Board or appeal therefrom, that the GRANTEE is not entitled, in whole or in part, to the adjustment, the GRANTEE shall deposit in an escrow account the excess amount collected under the adjustment and such amount shall be refunded to Expressways users who had paid the toll adjustment in accordance with the procedure as may be prescribed or promulgated by the Toll Regulatory Board.