Detail of Atty. MA. CHONA M. DIMAYUGA, Executive Director, Toll Regulatory Board, with the DPWH. Category: Department OrderSub Category: areas-responsibilities-authority-designationSeries: 1998No: 85File: DO_085_S1998.pdfDate: Friday, June 26, 1998Tags: Designation Detail MA. CHONA DIMAYUGA Executive Director Toll Regulatory Board 085 Read more about Detail of Atty. MA. CHONA M. DIMAYUGA, Executive Director, Toll Regulatory Board, with the DPWH.