N.i.t. No. 052025-26 Eecdr-vi Providing, Laying 300 Mm To 900 Mm Nominal Dia Internal And Peripheral Sewer Line For Tajpur Pahadi Excluding O-zone In Badarpur Ac And Construction Of 18.5 Mgd Sewage Treatment Plant Stp At Tajpur Pahadi Along With Associated / Allied Appurtenan