Surat Lignite Power Plant – 4 x 125 MW, Unit # 1 to 4: Biennial Service Contract for (A) Cleaning of areas underneath and surrounding Fly Ash And Bed Ash Silos, (B) Disposal of Ash at predesignated locations of Mines pit, and (C) Disposal of Fly Ash and Bed Ash in Mangrol Mines, at GIPCL-SLPP: 4 x 125 MW Power Plant for Two (2) Years: 2017-19.