providing & laying of sewer lines of various diameters at various locations in western suburb (h & k ward)’ 1) providing and laying 400 mm dia (od) hdpe class sewer line (pn6 class pe: 80 grade is: 14333) to correct grade & alignment from weh service road junction to regency hotel on both side of carriageway along n s phadke road at andheri (e) by partly hdd & partly by pipe jacking method in k/e ward.2) providing and laying 350 mm dia rcnp3 class sewer line from16th road junction to 19th road along midc road no 20 by open cut & partly by pipe jacking method, marol, andheri (e) in k/e ward.3) providing and laying 600 mm dia & 300 mm dia rcnp3 sewer line missing link work along military road by pipe jacking method, marol andheri (east) in k/east ward.