capacity reservoir was awarded to an Italian contractor in the sum of $460 million. Mobilisation was completed and good progress was made on temporary site works, dredging for the main western dam and the associated coffer dam works. Progress on the contracts for the tunnel and intake complex and the access roads continued satisfactorily.
11.85 The consultants completed an economic appraisal of the development of indirect catchment areas located on the fringe of the catchments currently included for development under the High Island proposals.
Raising of Plover Cove Dam, Uprating and Extension of Sha Tin Treatment Works and Pumping Station and Tai Po Tau Pumping Station
11.86 Raising of the dams and associated works to increase the capacity of Plover Cove reservoir from 37,378 million gallons to 51,778 million gallons approached completion. Uncompleted work on the overflow syphons and on the wave walls of the main dam is expected to be finished by mid 1973.
11.87 At Sha Tin, work on the treatment works extensions to raise the capacity of the plant from 120 million gallons per day to 175 million gallons per day proceeded on programme. Installation of mechanical, electrical and chemical dosing plant started and work commenced on the erection of the three 36 million gallons per day pumpsets in the extension pumping station. The first of the three 30 million gallons per day capacity clarifiers was ready for acceptance tests.
11.88 At Tai Po Tau pumping station civil engineering works were completed on the new pump hall. Installation of three additional 25 million gallons per day pumpsets, to bring the installed capacity to 262 million gallons per day, was in progress. Erection of the band-screens and installation of the ancillary mechanical plant commenced. Three large isolation gates were installed on the main tunnel system linking the pumping station and Plover Cove reservoir.
River Training Works at Tai Po
11.89 The consultants completed their feasibility report and submitted outline proposals for training works along the lower reaches of the Lam Tsuen river at Tai Po.
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