Laying Of New 250/300Mm Dia Swg Lines In Place Of Damaged 250/300Mm Dia Swg Lines From Lig 660 To Lig 639 And Lig 657, Lig 767 To 741 Lig 40 To 19 And Lig 798 To 792 In Lig Colony Under Rc Puram Section, Sub Division I, O And M Division Xvii