Addendum No. 2019-018 (Addendum for Sewage-Septage Treatment Plant (SSTP) Posted on September 24, 2019 P.R. No. 19-0136 – Design, Build, Testing & Commissioning of the 4,000 cu.m. per day Sewage-Septage Treatment Plant (SSTP) Addendum No. 2019-018
