The work will involve laying and maintaining of the sanitary drainage pipeline using micro-tunneling method from the UN roundabout to the Kazema camp crossroads on the Jahra road. The main elements of the project will consists of constructing new sanitary main line with total length of (28 kms) with diameters ranging (from 200 mm up to 2200 mms) and depths ranging (from 6 ms up to 35 ms below ground level) using microtunnelling method (Slurry System) for pipelines construction with maximum single drive length of 450 meters. manhole on pipeline (322 No.), CCTV Survey and Demolition of 2 Pump Stations and other miscellaneous works.