Description of the procurement
The Galway City Water Conservation Stage 3 watermain rehabilitation works Phase 1 will involve the following:
— Contractor design and construction of approximately 20 km of new watermains to replace existing cast iron, asbestos cement, PVC, mdpe and lead watermains including all ancillary works;
— the watermains will range in diameter from 110 mm OD (100 mm DN) to 280 mm OD (250 mm DN),
— the transfer of approximately 2 400 No existing connections to the new main,
— approximately 750 No of the existing connections are backyard services to be transferred to the new watermains to the front of the properties,
— works will take place across and in close proximity to protected structures at several locations,
— works will take place in close proximity to 2 No Special Areas of Conservation,
— contaminated land may be encountered during the works,
— very heavy traffic conditions are expected at several of the proposed works locations,
— it is expected that the use of trenchless techniques such as pipe bursting and horizontal directional drilling may be viable in certain areas, as well as open cut techniques in areas where trenchless techniques are not viable.
Further details of the scope of works and phasing of the works are included in the Pre-Qualification Questionnaire.