ENGR. ALEX C. PAGUIO, IN HIS CAPACITY AS GENERAL MANAGER, ANGELINE R. AGUILAR, ADMINISTRATIVE DIVISION MANAGER, EDITA B. ABARQUEZ, BOARD OF DIRECTORS (BOD) SECRETARY, MARIFEL B. PABILONIA, BOD CHAIRPERSON, NINA P. VELASCO, BOD VICE CHAIRPERSON, FRED V. CAPISTRANO, BOD CHAIRMAN, ANGELITO T. BOMBAY, BOD VICE CHAIRMAN, PETITIONERS, VS. COMMISSION ON AUDIT (COA), AND DIRECTOR CLEOTILDE M. TUAZON, COA REGIONAL DIRECTOR, REGION IV-A, RESPONDENTS